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Note: This page contains sample records for the topic "amine absorbent cxs" 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.


1

Treat LPGs with amines  

Science Conference Proceedings (OSTI)

In recent years, there has been increasing interest in sweetening liquefied petroleum gases (LPGs) with amines. However, limited data and design information are available in the literature. This article reviews the fundamental aspects of LPG amine treaters and includes guidelines, design considerations and alternatives for static mixers, jet eductor mixers and columns with structured packing, random packing and sieve trays. All of these current design methods are compared based on plant operating data. Guidelines are given for sweetening LPGs with amines including amine type, concentration, filtration, temperature, loading, circulation rate and water-wash systems. Also covered is the contacting method used in the absorber. Any of the commonly available amines such as monoethanolamine (MEA), diethanolamine (DEA), diglycolamine (DGA), methyl diethanolamine (MDEA) and MDEA-based solvents usually perform satisfactorily. Design criteria for distributors and LPG disperser plates, amine filtration and LPG settlers and coalescers are important. The contacting method is also important and includes jet eductor mixers, static mixers, and columns with sieve trays, random packing and structured packing.

Nielsen, R.B. [Fluor Daniel, Inc., Irvine, CA (United States); Rogers, J. [Koch Engineering, Inc., Wichita, KS (United States); Bullin, J.A.; Duewall, K.J. [Bryan Research and Engineering, Inc., Bryan, TX (United States)

1997-09-01T23:59:59.000Z

2

Amine salts of nitroazoles  

DOE Patents (OSTI)

Compositions of matter, a method of providing chemical energy by burning said compositions, and methods of making said compositions. These compositions are amine salts of nitroazoles.

Lee, Kien-yin (Los Alamos, NM); Stinecipher, Mary M. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

3

Amine salts of nitroazoles  

DOE Patents (OSTI)

Compositions of matter, a method of providing chemical energy by burning said compositions, and methods of making said compositions are described. These compositions are amine salts of nitroazoles. 1 figure.

Kienyin Lee; Stinecipher, M.M.

1993-10-26T23:59:59.000Z

4

High capacity immobilized amine sorbents  

DOE Patents (OSTI)

A method is provided for making low-cost CO.sub.2 sorbents that can be used in large-scale gas-solid processes. The improved method entails treating an amine to increase the number of secondary amine groups and impregnating the amine in a porous solid support. The method increases the CO.sub.2 capture capacity and decreases the cost of utilizing an amine-enriched solid sorbent in CO.sub.2 capture systems.

Gray, McMahan L. (Pittsburgh, PA); Champagne, Kenneth J. (Fredericktown, PA); Soong, Yee (Monroeville, PA); Filburn, Thomas (Granby, CT)

2007-10-30T23:59:59.000Z

5

High Capacity Immobilized Amine Sorbents  

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

Capacity Immobilized Amine Sorbents Capacity Immobilized Amine Sorbents Opportunity The Department of Energy's National Energy Technology Laboratory is seeking licensing partners interested in implementing United States Patent Number 7,288,136 entitled "High Capacity Immobilized Amine Sorbents." Disclosed in this patent is the invention of a method that facilitates the production of low-cost carbon dioxide (CO 2 ) sorbents for use in large-scale gas-solid processes. This method treats an amine to increase the number of secondary amine groups and impregnates the amine in a porous solid support. As a result of this improvement, the method increases CO 2 capture capacity and decreases the cost of using an amine-enriched solid sorbent in CO 2 capture systems. Overview The U.S. Department of Energy has placed a high priority on the separation

6

Energy Absorbing Material  

To overcome limitations with cellular silicone foams, LLNL innovators have developed a new 3D energy absorbing material with tailored/engineered bulk-scale properties. The energy absorbing material has 3D patterned architectures specially designed for ...

7

Feature -Amine wins 2010 ECS Battery Division Technology Award  

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

Argonne Home > Transportation Technology R & D Center > Khalil Amine wins 2010 ECS Battery Division Technology Award Khalil Amine Khalil Amine Argonne researcher Khalil Amine...

8

Composition for absorbing hydrogen  

DOE Patents (OSTI)

A hydrogen absorbing composition is described. The composition comprises a porous glass matrix, made by a sol-gel process, having a hydrogen-absorbing material dispersed throughout the matrix. A sol, made from tetraethyl orthosilicate, is mixed with a hydrogen-absorbing material and solidified to form a porous glass matrix with the hydrogen-absorbing material dispersed uniformly throughout the matrix. The glass matrix has pores large enough to allow gases having hydrogen to pass through the matrix, yet small enough to hold the particles dispersed within the matrix so that the hydrogen-absorbing particles are not released during repeated hydrogen absorption/desorption cycles.

Heung, L.K.; Wicks, G.G.; Enz, G.L.

1995-05-02T23:59:59.000Z

9

Composition for absorbing hydrogen  

DOE Patents (OSTI)

A hydrogen absorbing composition. The composition comprises a porous glass matrix, made by a sol-gel process, having a hydrogen-absorbing material dispersed throughout the matrix. A sol, made from tetraethyl orthosilicate, is mixed with a hydrogen-absorbing material and solidified to form a porous glass matrix with the hydrogen-absorbing material dispersed uniformly throughout the matrix. The glass matrix has pores large enough to allow gases having hydrogen to pass through the matrix, yet small enough to hold the particles dispersed within the matrix so that the hydrogen-absorbing particles are not released during repeated hydrogen absorption/desorption cycles.

Heung, Leung K. (Aiken, SC); Wicks, George G. (Aiken, SC); Enz, Glenn L. (N. Augusta, SC)

1995-01-01T23:59:59.000Z

10

Amine plant troubleshooting and optimization  

Science Conference Proceedings (OSTI)

A systematic method for troubleshooting and optimization of amine plants, if properly used, will result in fewer plant upsets, quick and correct responses to changing conditions and long-term profitable operations of any amine unit. It is important for amine plants to maintain safe, continuous and optimized operations for short- and long-term success. Effective and fast resolution of maine unit upsets plays a large part in this success. These considerations are as important in plants using generic amines such as monoethanolamine (MEA), diethanolamine (DEA), methyldiethanolamine (MDEA) and specialty amines based on MDEA. The key to troubleshooting and optimization is a systematic approach. Developing and using control charts can also be used to monitor amine plant operations. By using these techniques collectively, a formal method for troubleshooting and optimization can be established. This will ultimately result in a more trouble-free, continuous operation.

Abry, R.G.F. [Dow Chemical Co., Ft. Saskatchewan, Alberta (Canada); DuPart, M.S. [Dow Chemical Co., Freeport, TX (United States)

1995-04-01T23:59:59.000Z

11

Liquid Cryogen Absorber for MICE  

E-Print Network (OSTI)

the absorber body, its heat exchanger, the hydrogen system,the absorber. The heat exchanger pipes (used for absorberextended surface. The heat exchanger built into the absorber

2005-01-01T23:59:59.000Z

12

Liquid Hydrogen Absorber for MICE  

E-Print Network (OSTI)

REFERENCES Figure 5: Liquid hydrogen absorber and test6: Cooling time of liquid hydrogen absorber. Eight CernoxLIQUID HYDROGEN ABSORBER FOR MICE S. Ishimoto, S. Suzuki, M.

Ishimoto, S.

2010-01-01T23:59:59.000Z

13

Methods for absorbing neutrons  

DOE Patents (OSTI)

A conduction cooled neutron absorber may include a metal matrix composite that comprises a metal having a thermal neutron cross-section of at least about 50 barns and a metal having a thermal conductivity of at least about 1 W/cmK. Apparatus for providing a neutron flux having a high fast-to-thermal neutron ratio may include a source of neutrons that produces fast neutrons and thermal neutrons. A neutron absorber positioned adjacent the neutron source absorbs at least some of the thermal neutrons so that a region adjacent the neutron absorber has a fast-to-thermal neutron ratio of at least about 15. A coolant in thermal contact with the neutron absorber removes heat from the neutron absorber.

Guillen, Donna P. (Idaho Falls, ID); Longhurst, Glen R. (Idaho Falls, ID); Porter, Douglas L. (Idaho Falls, ID); Parry, James R. (Idaho Falls, ID)

2012-07-24T23:59:59.000Z

14

Externally tuned vibration absorber  

DOE Patents (OSTI)

A vibration absorber unit or units are mounted on the exterior housing of a hydraulic drive system of the type that is powered from a pressure wave generated, e.g., by a Stirling engine. The hydraulic drive system employs a piston which is hydraulically driven to oscillate in a direction perpendicular to the axis of the hydraulic drive system. The vibration absorbers each include a spring or other resilient member having one side affixed to the housing and another side to which an absorber mass is affixed. In a preferred embodiment, a pair of vibration absorbers is employed, each absorber being formed of a pair of leaf spring assemblies, between which the absorber mass is suspended.

Vincent, Ronald J. (Latham, NY)

1987-09-22T23:59:59.000Z

15

Liquid Cryogen Absorber for MICE  

E-Print Network (OSTI)

through a gravity feed heat pipe that insures that thethe absorber. The heat exchanger pipes (used for absorber

2005-01-01T23:59:59.000Z

16

Energy Absorbing Material  

To overcome limitations with cellular silicone foams, LLNL innovators have developed a new 3D energy absorbing material with tailored/engineered ...

17

Advanced neutron absorber materials  

DOE Patents (OSTI)

A neutron absorbing material and method utilizing rare earth elements such as gadolinium, europium and samarium to form metallic glasses and/or noble base nano/microcrystalline materials, the neutron absorbing material having a combination of superior neutron capture cross sections coupled with enhanced resistance to corrosion, oxidation and leaching.

Branagan, Daniel J. (Idaho Falls, ID); Smolik, Galen R. (Idaho Falls, ID)

2000-01-01T23:59:59.000Z

18

Internal absorber solar collector  

DOE Patents (OSTI)

Thin solar collecting panels are described made from arrays of small rod collectors consisting of a refracting dielectric rod lens with an absorber imbedded within it and a reflecting mirror coated on the back side of the dielectric rod. Non-tracking collector panels on vertical walls or roof tops receive approximately 90% of solar radiation within an acceptance zone 60.degree. in elevation angle by 120.degree. or more in the azimuth sectors with a collector concentration ratio of approximately 3.0. Miniaturized construction of the circular dielectric rods with internal absorbers reduces the weight per area of glass, plastic and metal used in the collector panels. No external parts or insulation are needed as heat losses are low due to partial vacuum or low conductivity gas surrounding heated portions of the collector. The miniature internal absorbers are generally made of solid copper with black selective surface and the collected solar heat is extracted at the collector ends by thermal conductivity along the absorber rods. Heat is removed from end fittings by use of liquid circulants. Several alternate constructions are provided for simplifying collector panel fabrication and for preventing the thermal expansion and contraction of the heated absorber or circulant tubes from damaging vacuum seals. In a modified version of the internal absorber collector, oil with temperature dependent viscosity is pumped through a segmented absorber which is now composed of closely spaced insulated metal tubes. In this way the circulant is automatically diverted through heated portions of the absorber giving higher collector concentration ratios than theoretically possible for an unsegmented absorber.

Sletten, Carlyle J. (106 Nagog Hill Rd., Acton, MA 01720); Herskovitz, Sheldon B. (88 Hammond St., Acton, MA 01720); Holt, F. S. (46 Emerson Rd., Winchester, MA 01890); Sletten, E. J. (Chestnut Hill Rd. R.F.D. Rte. #4, Amherst, NH 03031)

1981-01-01T23:59:59.000Z

19

Neutron Absorbing Alloys  

SciTech Connect

The present invention is drawn to new classes of advanced neutron absorbing structural materials for use in spent nuclear fuel applications requiring structural strength, weldability, and long term corrosion resistance. Particularly, an austenitic stainless steel alloy containing gadolinium and less than 5% of a ferrite content is disclosed. Additionally, a nickel-based alloy containing gadolinium and greater than 50% nickel is also disclosed.

Mizia, Ronald E. (Idaho Falls, ID); Shaber, Eric L. (Idaho Falls, ID); DuPont, John N. (Whitehall, PA); Robino, Charles V. (Albuquerque, NM); Williams, David B. (Bethlehem, PA)

2004-05-04T23:59:59.000Z

20

Shock absorbing battery housing  

SciTech Connect

A portable battery device is provided which dampens shock incident upon the battery device such that an electrical energizable apparatus connected to the battery device is subject to reduced shock whenever the battery device receives an impact. The battery device includes a battery housing of resilient shock absorbing material injection molded around an interconnecting structure which mechanically and electrically interconnects the battery housing to an electrically energizable apparatus.

McCartney, W.J.; Jacobs, J.D.; Keil, M.J.

1984-09-04T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Corrosion resistant neutron absorbing coatings  

SciTech Connect

A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

Choi, Jor-Shan (El Cerrito, CA); Farmer, Joseph C. (Tracy, CA); Lee, Chuck K. (Hayward, CA); Walker, Jeffrey (Gaithersburg, MD); Russell, Paige (Las Vegas, NV); Kirkwood, Jon (Saint Leonard, MD); Yang, Nancy (Lafayette, CA); Champagne, Victor (Oxford, PA)

2012-05-29T23:59:59.000Z

22

Solar radiation absorbing material  

DOE Patents (OSTI)

Solar energy absorbing means in solar collectors are provided by a solar selective carbon surface. A solar selective carbon surface is a microporous carbon surface having pores within the range of 0.2 to 2 micrometers. Such a surface is provided in a microporous carbon article by controlling the pore size. A thermally conductive substrate is provided with a solar selective surface by adhering an array of carbon particles in a suitable binder to the substrate, a majority of said particles having diameters within the range of about 0.2-10 microns.

Googin, John M. (Oak Ridge, TN); Schmitt, Charles R. (Oak Ridge, TN); Schreyer, James M. (Oak Ridge, TN); Whitehead, Harlan D. (Clinton, TN)

1977-01-01T23:59:59.000Z

23

Evidence of acid-base interactions between amines and model indoor surfaces  

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

Evidence of acid-base interactions between amines and model indoor surfaces Evidence of acid-base interactions between amines and model indoor surfaces by ATR-FTIR spectroscopy Title Evidence of acid-base interactions between amines and model indoor surfaces by ATR-FTIR spectroscopy Publication Type Journal Article LBNL Report Number LBNL-63480 Year of Publication 2007 Authors Destaillats, Hugo, Brett C. Singer, and Lara A. Gundel Journal Atmospheric Environment Volume 41 Start Page Chapter Pagination 3177-3181 ISBN Number 1352-2310 Keywords acid-base, cellulose, gypsum, nicotine, pyridine, sorption, surface materials Abstract Molecular associations of pyridine with cellulose and gypsum, surrogates for common indoor surface materials, were studied using an attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectrophotometric method. The purpose of this study was to gain insight into the molecular interactions of amines with well-characterized materials that affect their partitioning between indoor air and surfaces. The experimental results suggest the presence of at least two sorptive states for volatile and semivolatile amines, attributed to the chemisorbed species and to a more labile surface state (i.e., physisorbed pyridine). Both exhibited spectroscopic signatures corresponding to aromatic C-H stretching modes (2950-3100 cm-1) in the studied spectral region. Chemisorbed pyridine could be identified by the presence of additional IR signals in the N-H and O-H stretching region of the spectrum (2900-3600 cm-1). During desorption under a stream of N2, surface enrichment in the chemisorbed species was evidenced by a slower reduction of the absorbance of the broad band at 2900-3600 cm-1 in relation to the total pyridine absorbance change. This spectroscopic evidence for acid-base interactions between amines and surfaces is consistent with the desorption behavior observed in previous work for nicotine from model surfaces.

24

Amine inhibitor copes with corrosion  

SciTech Connect

This article describes Mitchell Energy Corp.'s Bridgeport, Texas CO2 recovery plant, and in particular the amine inhibitor system that reduces corrosion. The combination of monoethanolamine (MEA) with CO2 in the absence of hydrogen sulfide is probably one of the most corrosive gas-treating situations possible. This plant has run considerably smoother since starting the corrosion-inhibitor system. However, the system is not a substitute for prudent amine plant operations, but rather a safety net. The most dramatic results described were observed at the reclaimer, reboilers, and both rich and lean amine lines to and from the rich/lean exchanger. Maintaining a still bottoms temperature hot enough to adequately strip the CO2 from the MEA but not too hot to promote corrosion, is very important. Equally important with an inhibitor system is ensuring that all surfaces to be protected are kept wetted with the inhibitor. A good inhibitor system can provide protection by greatly reducing the extent of corrosion during an upset condition and drive the rate completely to zero when the plant is operated properly.

Hopson, S.

1985-07-01T23:59:59.000Z

25

Liquid Cryogen Absorber for MICE  

DOE Green Energy (OSTI)

The Muon Ionization Cooling Experiment (MICE) will test ionization cooling of muons. In order to have effective ionization cooling, one must use an absorber that is made from a low-z material. The most effective low z materials for ionization cooling are hydrogen, helium, lithium hydride, lithium and beryllium, in that order. In order to measure the effect of material on cooling, several absorber materials must be used. This report describes a liquid-hydrogen absorber that is within a pair of superconducting focusing solenoids. The absorber must also be suitable for use with liquid helium. The following absorber components are discussed in this report; the absorber body, its heat exchanger, the hydrogen system, and the hydrogen safety. Absorber cooling and the thin windows are not discussed here.

Baynham, D.E.; Bish, P.; Bradshaw, T.W.; Cummings, M.A.; Green,M.A.; Ishimoto, S.; Ivaniouchenkov, I.; Lau, W.; Yang, S.Q.; Zisman, M.S.

2005-08-20T23:59:59.000Z

26

Argonne Transportation - Amine 2003 Scientific American 50  

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

Amine leads a team of scientists and engineers in the development of advanced lithium battery materials and cell chemistries for emerging applications. One important...

27

AMINE BIOGENE IN PRODOTTI TRADIZIONALI TOSCANI.  

E-Print Network (OSTI)

??Biogenic amines (BAs) can be naturally present in several foods. They are mainly produced in large amounts by the activity of microorganisms’ amino acid decarboxylases.… (more)

FORZALE, FABIO

2010-01-01T23:59:59.000Z

28

Thermal Decomposition Chemistry of Amine Borane (U)  

DOE Green Energy (OSTI)

The conclusions of this presentation are: (1) Amine boranes potentially can be used as a vehicular hydrogen storage material. (2) Purity of the hydrogen stream is critical for use with a fuel cell. Pure H{sub 2} can be provided by carefully conditioning the fuel (encapsulation, drying, heating rate, impurities). (3) Thermodynamics and kinetics can be controlled by conditioning as well. (4) Regeneration of the spent amine borane fuel is still the greatest challenge to its potential use. (5) Addition of hydrocarbon-substituted amine boranes alter the chemistry dramatically. (6) Decomposition of the substituted amine borane mixed system favors reaction products that are more potentially easier to regenerate the hydrogenated fuel. (7) t-butylamine borane is not the best substituted amine borane to use since it releases isobutane; however, formation of CNBH{sub x} products does occur.

Stowe, A. C.; Feigerle, J.; Smyrl, N. R.; Morrell, J. S.

2010-01-29T23:59:59.000Z

29

Bulk Gold-Catalyzed Reactions of Isocyanides, Amines, and Amine N-Oxides  

Science Conference Proceedings (OSTI)

Bulk gold powder (5–50 ?m particles) catalyzes the reactions of isocyanides with amines and amine N-oxides to produce ureas. The reaction of n-butyl isocyanide (nBu–N?C) with di-n-propylamine and N-methylmorpholine N-oxide in acetonitrile, which was studied in the greatest detail, produced 3-butyl-1,1-dipropylurea (O?C(NHnBu)(NnPr2)) in 99% yield at 60 °C within 2 h. Sterically and electronically different isocyanides, amines, and amine N-oxides react successfully under these conditions. Detailed studies support a two-step mechanism that involves a gold-catalyzed reaction of adsorbed isocyanide with the amine N-oxide to form an isocyanate (RN?C?O), which rapidly reacts with the amine to give the urea product. These investigations show that bulk gold, despite its reputation for poor catalytic activity, is capable of catalyzing these reactions.

Klobukowski, Erik; Angelici, Robert; Woo, Keith L.

2012-01-26T23:59:59.000Z

30

Countercurrent flow absorber and desorber  

DOE Patents (OSTI)

Countercurrent flow absorber and desorber devices are provided for use in absorption cycle refrigeration systems and thermal boosting systems. The devices have increased residence time and surface area resulting in improved heat and mass transfer characteristics. The apparatuses may be incorporated into open cycle thermal boosting systems in which steam serves both as the refrigerant vapor which is supplied to the absorber section and as the supply of heat to drive the desorber section of the system. 9 figs.

Wilkinson, W.H.

1984-10-16T23:59:59.000Z

31

Method for Regeneration of Immobilized Amine Sorbents  

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

Regeneration of Immobilized Amine Sorbents Regeneration of Immobilized Amine Sorbents for Use in CO 2 Capture Opportunity Research is currently active on the patent-pending technology "Regenerable Sorbent Technique for Capturing CO 2 Using Immobilized Amine Sorbents." The technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview Carbon sequestration entails a multi-step process in which anthropogenic CO 2 emissions are captured from CO 2 -laden process gas streams and perma- nently stored. Carbon capture is a critical step in the process and accounts for a considerable portion of the overall cost. Newly developed, high-capacity amine-based sorbents offer many advantages over existing technology

32

Thermal Degradation of Amines in Supercritical Water  

Science Conference Proceedings (OSTI)

The purity and chemical control of water and steam are essential for ensuring fossil plant availability and reliability. An assessment of amines to address specific corrosion control issues (Electric Power Research Institute [EPRI] report 1017475) identified eight amines as alternatives to ammonia for pH control. Previous research has limited the thermal degradation of the pH control agents to temperatures less than 300176C. This report presents an understanding of the high-temperature degradation of the...

2010-08-11T23:59:59.000Z

33

Removal of mercury from gas streams using hydrogen sulfide and amines  

SciTech Connect

Phillips Petroleum Co. has developed an integrated process for treating a natural-gas stream with a precipitating agent to remove mercury and introducing an absorption agent to control the amount of precipitating agent left in the gas stream. In the process, a gas (particularly a sulfur-free natural gas) that contains mercury is contacted with an amount of hydrogen sulfide in excess of the stoichiometric amount of hydrogen sulfide necessary to precipitate sulfides of mercury, with further contact with an amine that is an absorption agent for hydrogen sulfide. The hydrogen sulfide precipitates sulfides of mercury from the gas stream while the amine absorbs the excess hydrogen sulfide to produce a gas stream of minimal sulfur content with a reduced mercury content that can be below the range of detection.

Miller, A.J.; Tuckett, W.F.

1977-08-23T23:59:59.000Z

34

Damage tolerant light absorbing material  

DOE Patents (OSTI)

A light absorbing article comprised of a composite of carbon-bonded carbon fibers, is prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000 C to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm[sup 3]. 9 figures.

Lauf, R.J.; Hamby, C. Jr.; Akerman, M.A.; Seals, R.D.

1993-09-07T23:59:59.000Z

35

Damage tolerant light absorbing material  

DOE Patents (OSTI)

A light absorbing article comprised of a composite of carbon-bonded carbon fibers, prepared by: blending carbon fibers with a carbonizable organic powder to form a mixture; dispersing the mixture into an aqueous slurry; vacuum molding the aqueous slurry to form a green article; drying and curing the green article to form a cured article; and, carbonizing the cured article at a temperature of at least about 1000.degree. C. to form a carbon-bonded carbon fiber light absorbing composite article having a bulk density less than 1 g/cm.sup.3.

Lauf, Robert J. (Oak Ridge, TN); Hamby, Jr., Clyde (Harriman, TN); Akerman, M. Alfred (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN)

1993-01-01T23:59:59.000Z

36

Acid-catalyzed dehydrogenation of amine-boranes  

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

Acid-catalyzed dehydrogenation of amine-boranes Acid-catalyzed dehydrogenation of amine-boranes Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. June 25, 2013 Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. Available for thumbnail of Feynman Center (505) 665-9090 Email Acid-catalyzed dehydrogenation of amine-boranes A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric product. The method of dehydrogenating amine-boranes may be used to generate hydrogen for power generation sources such as fuel cells. U.S. Patent No.: 7,645,902 (DOE S-104,909) Patent Application Filing Date: June 22, 2006

37

CX-003442: Categorical Exclusion Determination | Department of...  

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

Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: B3.6 Date: 08162010...

38

CX-003443: Categorical Exclusion Determination | Department of...  

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

Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: A9, A11, A14 Date: 08162010...

39

Categorical Exclusion Determinations: National Energy Technology...  

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

Amine Absorbent CX(s) Applied: A9, A11, A14 Date: 08162010 Location(s): San Francisco, California Office(s): Fossil Energy, National Energy Technology Laboratory...

40

Novel CO2 - Philic Absorbents  

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

Novel Co Novel Co 2 - PhiliC AbsorbeNts Summary The ability to separate a high pressure mixture of CO 2 and H 2 such that a high pressure stream of CO 2 for sequestration and a high pressure stream of H 2 for energy are produced remains an elusive goal. This research has identified a class of compounds that melt in the presence of high pressure CO 2 , forming a liquid phase composed of roughly 50wt% CO 2 and 50wt% of the compound. Unlike conventional solvents that require substantial depressurization during regeneration to release a low pressure CO 2 stream, these novel compounds completely release the CO 2 at many hundreds of psia as the compound solidifies. This work will reveal whether one of more of these compounds can selectively remove CO 2 from a mixture

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Porcelain enamel neutron absorbing material  

DOE Patents (OSTI)

A porcelain enamel composition as a neutron absorbing material can be prepared of a major proportion by weight of a cadmium compound and a minor proportion of compound of boron, lithium and silicon. These compounds in the form of a porcelain enamel coating or layer on several alloys has been found to be particularly effective in enhancing the nuclear safety of equipment for use in the processing and storage of fissile material. The composition of the porcelain enamel coating can be tailored to match the coefficient of thermal expansion of the equipment to be coated and excellent coating adhesion can be achieved. 2 figs.

Iverson, D.C.

1987-11-20T23:59:59.000Z

42

Assessment of Amines for Fossil Plant Applications  

Science Conference Proceedings (OSTI)

The purity and proper chemical treatment of water and steam are central to ensuring fossil and heat recovery steam generator (HRSG) plant component availability and reliability, which are critical to the overall economic performance and profitability of plant unit operations. This report provides a technical assessment of neutralizing amines for application in plant cycles to improve the pH conditions in the low pressure (LP) evaporators and economizers of HRSGs, the phase transition zone (PTZ) of the LP...

2010-03-31T23:59:59.000Z

43

Absorbents for Mineral Oil Spill Cleanup  

Science Conference Proceedings (OSTI)

Residual mineral oil on the ground surface following electrical equipment spills is often removed using a surface application of an absorbent material. Traditional absorbent products include clays, sawdust-like products, silica-based products, and various organic industry byproduct materials. After the material has had time to absorb the mineral oil on the ground surface, it is removed and normally sent to a landfill with a liner and leachate collection system designed to Subtitle D standards for municip...

2011-08-23T23:59:59.000Z

44

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

E-Print Network (OSTI)

of the University of California, nor any of their employees,of the University of California. The views and opinions ofof the University of California. SELECTIVE ABSORBER COATED

Lampert, Carl M.

2013-01-01T23:59:59.000Z

45

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

over the southwest summer monsoon region, Meteorol. Atmos.Absorbing aerosols and summer monsoon evolution over SouthK. M. Kim (2006), Asian summer monsoon anomalies induced by

Zhu, Aihua

2010-01-01T23:59:59.000Z

46

Efficient Energy Absorbing Element for Crashworthiness ...  

Science Conference Proceedings (OSTI)

Tubes of high strength steel and composites can be utilized to absorb the impact energy. In this work, circular tubes of annealed, dual phase (DP) steel and ...

47

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

P.M. Forster (2004), The semi-direct aerosol effect: Impactof absorbing aerosols on marine stratocumulus. Q. J .2005), Global anthropogenic aerosol direct forcing derived

Zhu, Aihua

2010-01-01T23:59:59.000Z

48

A Process for the Conversion of Cyclic Amines Into Lactams ...  

Ames Laboratory researchers have developed a process for the conversion of cyclic amines into lactams, which may have utility for the production of nylons and other ...

49

Amin Maalouf : a literatura como mediação entre Oriente e Ocidente.  

E-Print Network (OSTI)

??Preocupado com as fricções do mundo contemporâneo que, motivadas por essencialismos segregacionistas, esfacelam comunidades e fazem perigar a paz e o equilíbrio mundiais, Amin Maalouf,… (more)

Dias, Maria José Carneiro

2009-01-01T23:59:59.000Z

50

Amine Enriched Solid Sorbents for Carbon Dioxide Capture Opportunity  

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

Laboratory is seeking licensing partners interested in implementing United States Patent Number 6,547,854 entitled "Amine Enriched Solid Sorbents for Carbon Dioxide Capture."...

51

Device for absorbing mechanical shock  

DOE Patents (OSTI)

This invention is a comparatively inexpensive but efficient shock-absorbing device having special application to the protection of shipping and storage cylinders. In a typical application, two of the devices are strapped to a cylinder to serve as saddle-type supports for the cylinder during storage and to protect the cylinder in the event it is dropped during lifting or lowering operations. In its preferred form, the invention includes a hardwood plank whose grain runs in the longitudinal direction. The basal portion of the plank is of solid cross-section, whereas the upper face of the plank is cut away to form a concave surface fittable against the sidewall of a storage cylinder. The concave surface is divided into a series of segments by transversely extending, throughgoing relief slots. A layer of elastomeric material is positioned on the concave face, the elastomer being extrudable into slots when pressed against the segments by a preselected pressure characteristic of a high-energy impact. The compressive, tensile, and shear properties of the hardwood and the elastomer are utilized in combination to provide a surprisingly high energy-absorption capability.

Newlon, Charles E. (Knoxville, TN)

1980-01-01T23:59:59.000Z

52

Device for absorbing mechanical shock  

DOE Patents (OSTI)

This invention is a comparatively inexpensive but efficient shock-absorbing device having special application to the protection of shipping and storage cylinders. In a typical application, two of the devices are strapped to a cylinder to serve as saddle-type supports for the cylinder during storage and to protect the cylinder in the event it is dropped during lifting or lowering operations. In its preferred form, the invention includes a hardwood plank whose grain runs in the longitudinal direction. The basal portion of the plank is of solid cross-section, whereas the upper face of the plank is cut away to form a concave surface fittable against the sidewall of a storage cylinder. The concave surface is divided into a series of segments by transversely extending, throughgoing relief slots. A layer of elastomeric material is positioned on the concave face, the elastomer being extrudable into slots when pressed against the segments by a preselected pressure characteristic of a high-energy impact. The compressive, tensile, and shear properties of the hardwood and the elastomer are utilized in combination to provide a surprisingly high energy-absorption capability.

Newlon, C.E.

1979-08-29T23:59:59.000Z

53

Definition: Point Absorber | Open Energy Information  

Open Energy Info (EERE)

Point Absorber Point Absorber Jump to: navigation, search Dictionary.png Point Absorber Wave energy capture device, with principal dimension relatively small compared to the wavelength, and is able to capture energy from a wave front greater than the physical dimension of the device. There are floating and submerged models.[1] Related Terms Wave power; PowerBouy References ↑ http://en.wikipedia.org/wiki/Wave_power Poi LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ntabsorber.jpg Example of a Point Absorber A submerged pressure differential wave energy capturing device, which can be considered a fully submerged point absorber. A pressure differential is induced within the device as the wave passes, driving a fluid pump to create mechanical energy. Retrieved from

54

Acid-catalyzed dehydrogenation of amine-boranes  

DOE Patents (OSTI)

A method of dehydrogenating an amine-borane using an acid-catalyzed reaction. The method generates hydrogen and produces a solid polymeric [R.sup.1R.sup.2B--NR.sup.3R.sup.4].sub.n product. The method of dehydrogenating amine-boranes may be used to generate H.sub.2 for portable power sources.

Stephens, Frances Helen (Santa Fe, NM); Baker, Ralph Thomas (Los Alamos, NM)

2010-01-12T23:59:59.000Z

55

Thin film absorber for a solar collector  

SciTech Connect

This invention pertains to energy absorbers for solar collectors, and more particularly to high performance thin film absorbers. The solar collectors comprising the absorber of this invention overcome several problems seen in current systems, such as excessive hardware, high cost and unreliability. In the preferred form, the apparatus features a substantially rigid planar frame with a thin film window bonded to one planar side of the frame. An absorber in accordance with the present invention is comprised of two thin film layers that are sealed perimetrically. In a preferred embodiment, thin film layers are formed from a metal/plastic laminate. The layers define a fluid-tight planar envelope of large surface area to volume through which a heat transfer fluid flows. The absorber is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

Wilhelm, William G. (Cutchogue, NY)

1985-01-01T23:59:59.000Z

56

Neutron absorbing coating for nuclear criticality control  

DOE Patents (OSTI)

A neutron absorbing coating for use on a substrate, and which provides nuclear criticality control is described and which includes a nickel, chromium, molybdenum, and gadolinium alloy having less than about 5% boron, by weight.

Mizia, Ronald E. (Idaho Falls, ID); Wright, Richard N. (Idaho Falls, ID); Swank, William D. (Idaho Falls, ID); Lister, Tedd E. (Idaho Falls, ID); Pinhero, Patrick J. (Idaho Falls, ID)

2007-10-23T23:59:59.000Z

57

Durability of Polymeric Glazing and Absorber Materials  

DOE Green Energy (OSTI)

The Solar Heating and Lighting Program has set the goal of reducing the cost of solar water heating systems by at least 50%. An attractive approach to such large cost reduction is to replace glass and metal parts with less-expensive, lighter-weight, more-integrated polymeric components. The key challenge with polymers is to maintain performance and assure requisite durability for extended lifetimes. The objective of this task is to quantify lifetimes through measurement of the optical and mechanical stability of candidate polymeric glazing and absorber materials. Polycarbonate sheet glazings, as proposed by two industry partners, have been tested for resistance to UV radiation with three complementary methods. Incorporation of a specific 2-mil thick UV-absorbing screening layer results in glazing lifetimes of at least 15 years; improved screens promise even longer lifetimes. Proposed absorber materials were tested for creep and embrittlement under high temperature, and appear adequate for planned ICS absorbers.

Jorgensen, G.; Terwilliger, K.; Bingham, C.; Milbourne, M.

2005-01-01T23:59:59.000Z

58

NETL: Carbon Absorber Retrofit Equipment (CARE)  

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

Emissions Control Carbon Absorber Retrofit Equipment (CARE) Project No.: DE-FE0007528 Spray Jet Array for Neustream-C Nozzle Technology Spray Jet Array for Neustream-C Nozzle...

59

Porous absorber for solar air heaters  

DOE Green Energy (OSTI)

A general discussion of the factors affecting solar collector performance is presented. Bench scale tests done to try to determine the heat transfer characteristics of various screen materials are explained. The design, performance, and evaluation of a crude collector with a simple screen stack absorber is treated. The more sophisticated absorber concept, and its first experimental approximation is examined. A short summary of future plans for the collector concept is included. (MHR)

Finch, J.A.

1980-09-10T23:59:59.000Z

60

The Cooling of a Liquid Absorber using a Small Cooler  

E-Print Network (OSTI)

liquid absorber with its condenser and surge volume and theMICE liquid absorber, the condenser, and the absorber 4 Ka liquid surge tank (with condenser). The heat leak estimate

Baynham, D.E.; Bradshaw, T.W.; Green, M.A.; Ishimoto, S.; Liggins, N.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Acid-Catalyzed Dehydrogenation of Amine-Boranes  

method generates hydrogen and produces a solid polymeric product. The method of dehydrogenating amine-boranes may be used to generate hydrogen for power generation sources such as fuel cells.

62

Two Dimensional Polyamides Prepared From Unsaturated Carboxylic Acids And Amines.  

DOE Patents (OSTI)

A polyamide and a process for preparing the polyamide are disclosed. The process comprises reacting in a reaction mixture a monomer selected from unsaturated carboxylic acids, esters of unsaturated carboxylic acids, anhydrides of unsaturated carboxylic acids, and mixtures thereof, and a first amine to form an intermediate reaction product in the reaction mixture, wherein the first amine is selected from RR.sub.1 NH, RNH.sub.2, RR.sub.1 NH.sub.2.sup.+, RNH.sub.3.sup.+ and mixtures thereof, wherein R and R.sub.1 can be the same or different and each contain between about 1 and 50 carbon atoms and are optionally substituted with heteroatoms oxygen, nitrogen, sulfur, and phosphorus and combinations thereof, and reacting the intermediate reaction product and a second amine to form a polyamide, wherein the second amine is selected from R.sub.2 R.sub.3 NH, R.sub.2 NH.sub.2, R.sub.2 R.sub.3 NH.sub.2.sup.+, R.sub.2 NH.sub.3.sup.+ and mixtures thereof wherein R.sub.2 and R.sub.3 can be the same or different and each contain between about 1 and 50 carbon atoms and are optionally substituted with heteroatoms oxygen, nitrogen, sulfur, and phosphorus and combinations thereof, wherein multiple of the R, R.sub.1, R.sub.2, and R.sub.3 are in vertically aligned spaced relationship along a backbone formed by the polyamide. In one version of the invention, the monomer is selected from maleic anhydride, maleic acid esters, and mixtures thereof. In another version of the invention, the first amine is an alkylamine, such as tetradecylamine, and the second amine is a polyalkylene polyamine, such as pentaethylenehexamine. In yet another version of the invention, the first amine and the second amine are olefinic or acetylenic amines, such as the reaction products of an alkyldiamine and an acetylenic carboxylic acid. The first amine and the second amine may be the same or different depending on the desired polyamide polymer structure.

McDonald, William F. (Utica, OH); Huang, Zhi Heng (East Lansing, MI); Wright, Stacy C. (Lansing, MI); Danzig, Morris (Northbrook, IL); Taylor, Andrew C. (Ann Arbor, MI)

2002-07-17T23:59:59.000Z

63

Metal Monolithic Amine-Grafted Zeolites for CO2 Capture  

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

Metal Monolithic Amine-Grafted Metal Monolithic Amine-Grafted Zeolites for CO 2 Capture Background The mission of the U.S. Department of Energy's (DOE) Existing Plants, Emissions & Capture (EPEC) Research and Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while allowing the current fleet of coal-fired power plants to comply with existing and emerging environmental regulations. The EPEC R&D Program portfolio

64

Absorber Materials at Room and Cryogenic Temperatures  

Science Conference Proceedings (OSTI)

We recently reported on investigations of RF absorber materials at cryogenic temperatures conducted at Jefferson Laboratory (JLab). The work was initiated to find a replacement material for the 2 Kelvin low power waveguide Higher Order Mode (HOM) absorbers employed within the original cavity cryomodules of the Continuous Electron Beam Accelerator Facility (CEBAF). This effort eventually led to suitable candidates as reported in this paper. Furthermore, though constrained by small funds for labor and resources, we have analyzed a variety of lossy ceramic materials, several of which could be usable as HOM absorbers for both normal conducting and superconducting RF structures, e.g. as loads in cavity waveguides and beam tubes either at room or cryogenic temperatures and, depending on cooling measures, low to high operational power levels.

F. Marhauser, T.S. Elliott, A.T. Wu, E.P. Chojnacki, E. Savrun

2011-09-01T23:59:59.000Z

65

Ferrite HOM Absorber for the RHIC ERL  

Science Conference Proceedings (OSTI)

A superconducting Energy Recovery Linac is under construction at Brookhaven National Laboratory to serve as test bed for RHIC upgrades. The damping of higher-order modes in the superconducting five-cell cavity for the Energy-Recovery linac at RHIC is performed exclusively by two ferrite absorbers. The ferrite properties have been measured in ferrite-loaded pill box cavities resulting in the permeability values given by a first-order Debye model for the tiled absorber structure and an equivalent permeability value for computer simulations with solid ring dampers. Measured and simulated results for the higher-order modes in the prototype copper cavity are discussed. First room-temperature measurements of the finished niobium cavity are presented which confirm the effective damping of higher-order modes in the ERL. by the ferrite absorbers.

Hahn,H.; Choi, E.M.; Hammons, L.

2008-10-01T23:59:59.000Z

66

Durability of Polymeric Glazing and Absorber Materials  

DOE Green Energy (OSTI)

The Solar Heating and Lighting Program has set the goal of reducing the cost of solar water heating systems by at least 50%. An attractive approach to such large cost reduction is to replace glass and metal parts with less-expensive, lighter-weight, more-integrated polymeric components. The key challenge with polymers is to maintain performance and assure requisite durability for extended lifetimes. We have begun evaluation of several new UV-screened polycarbonate sheet glazing constructions. This has involved interactions with several major polymer industry companies to obtain improved candidate samples. Proposed absorber materials were tested for UV resistance, and appear adequate for unglazed ICS absorbers.

Jorgensen, G.; Terwilliger, K.; Bingham, C.; Lindquist, C.; Milbourne, M.

2005-11-01T23:59:59.000Z

67

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

DOE Green Energy (OSTI)

Solar absorber metal foils are discussed in terms of materials and basic processing science. Also included is the use of finished heavy sheet stock for direct fabrication of solar collector panels. Both the adhesives and bonding methods for foils and sheet are surveyed. Developmental and representative commercial foils are used as illustrative examples. As a result it was found that foils can compete economically with batch plating but are limited by adhesive temperature stability. Also absorber foils are very versatile and direct collector fabrication from heavy foils appears very promising.

Lampert, Carl M.

1980-04-01T23:59:59.000Z

68

Moving core beam energy absorber and converter  

SciTech Connect

A method and apparatus for the prevention of overheating of laser or particle beam impact zones through the use of a moving-in-the-coolant-flow arrangement for the energy absorbing core of the device. Moving of the core spreads the energy deposition in it in 1, 2, or 3 dimensions, thus increasing the effective cooling area of the device.

Degtiarenko, Pavel V.

2012-12-18T23:59:59.000Z

69

Composition for absorbing hydrogen from gas mixtures  

DOE Patents (OSTI)

A hydrogen storage composition is provided which defines a physical sol-gel matrix having an average pore size of less than 3.5 angstroms which effectively excludes gaseous metal hydride poisons while permitting hydrogen gas to enter. The composition is useful for separating hydrogen gas from diverse gas streams which may have contaminants that would otherwise render the hydrogen absorbing material inactive.

Heung, Leung K. (Aiken, SC); Wicks, George G. (Aiken, SC); Lee, Myung W. (Aiken, SC)

1999-01-01T23:59:59.000Z

70

Shock wave absorber having apertured plate  

DOE Patents (OSTI)

The shock or energy absorber disclosed herein utilizes an apertured plate maintained under the normal level of liquid flowing in a piping system and disposed between the normal liquid flow path and a cavity pressurized with a compressible gas. The degree of openness (or porosity) of the plate is between 0.01 and 0.60. The energy level of a shock wave travelling down the piping system thus is dissipated by some of the liquid being jetted through the apertured plate toward the cavity. The cavity is large compared to the quantity of liquid jetted through the apertured plate, so there is little change in its volume. The porosity of the apertured plate influences the percentage of energy absorbed.

Shin, Y.W.; Wiedermann, A.H.; Ockert, C.E.

1983-08-26T23:59:59.000Z

71

Shock wave absorber having apertured plate  

DOE Patents (OSTI)

The shock or energy absorber disclosed herein utilizes an apertured plate maintained under the normal level of liquid flowing in a piping system and disposed between the normal liquid flow path and a cavity pressurized with a compressible gas. The degree of openness (or porosity) of the plate is between 0.01 and 0.60. The energy level of a shock wave travelling down the piping system thus is dissipated by some of the liquid being jetted through the apertured plate toward the cavity. The cavity is large compared to the quantity of liquid jetted through the apertured plate, so there is little change in its volume. The porosity of the apertured plate influences the percentage of energy absorbed.

Shin, Yong W. (Western Springs, IL); Wiedermann, Arne H. (Chicago Heights, IL); Ockert, Carl E. (Vienna, VA)

1985-01-01T23:59:59.000Z

72

Shock wave absorber having a deformable liner  

DOE Patents (OSTI)

This invention discloses a shock wave absorber for a piping system carrying liquid. The absorber has a plastically deformable liner defining the normal flow boundary for an axial segment of the piping system, and a nondeformable housing is spaced outwardly from the liner so as to define a gas-tight space therebetween. The flow capacity of the liner generally corresponds to the flow capacity of the piping system line, but the liner has a noncircular cross section and extends axially of the piping system line a distance between one and twenty times the diameter thereof. Gas pressurizes the gas-tight space equal to the normal liquid pressure in the piping system. The liner has sufficient structural capacity to withstand between one and one-half and two times this normal liquid pressures; but at greater pressures it begins to plastically deform initially with respect to shape to a more circular cross section, and then with respect to material extension by circumferentially stretching the wall of the liner. A high energy shock wave passing through the liner thus plastically deforms the liner radially into the gas space and progressively also as needed in the axial direction of the shock wave to minimize transmission of the shock wave beyond the absorber.

Youngdahl, C.K.; Wiedermann, A.H.; Shin, Y.W.; Kot, C.A.; Ockert, C.E.

1983-08-26T23:59:59.000Z

73

Interim Guidance - Amine Treatments in Fossil Power Plants  

Science Conference Proceedings (OSTI)

The use of neutralizing amines has been the subject of an evaluation focused on the improvement of the pH conditions in the low-pressure (LP) evaporators and economizers of heat recovery steam generators (HRSGs), the phase transition zone (PTZ) of the LP steam turbine, the condensing steam in air-cooled condensers (ACCs), and the pH conditions at two-phase flow-accelerated corrosion (FAC) locations such as in feedwater heater drains. This report examines actual field use of amine treatments and the therm...

2010-12-23T23:59:59.000Z

74

Absorbents for Mineral Oil Spill Cleanup, Phase 3: Field Performance  

Science Conference Proceedings (OSTI)

Residual mineral oil on the ground surface following electrical equipment spills is often removed using a surface application of an absorbent material. Traditional absorbent products include clays, sawdust-like products, silica-based products, and various organic industry byproduct materials. This project was performed in three phases. Phase 1 included testing to measure overall mineral oil absorption efficiency of 24 absorbents. In Phase 2, absorbents studied in Phase 1 were further ...

2012-12-10T23:59:59.000Z

75

Novel amine-based presursor compounds and composite membranes thereof  

DOE Patents (OSTI)

Novel amine-based precursor compounds comprising the condensation products of dialkylenetriamine and alpha, beta-unsaturated acid halides are disclosed, as well as composite membranes containing such compounds, the membranes being useful in RO-type processes for desalination and the removal of low molecular weight organic compounds such as phenols and carboxylic acids.

Lee, Eric K. L. (Wilmington, DE); Tuttle, Mark E. (Bend, OR)

1989-01-01T23:59:59.000Z

76

Stable, concentrated solutions of polyaniline using amines as gel inhibitors  

DOE Patents (OSTI)

Stable, concentrated solutions of high-molecular weight polyaniline using amines as gel inhibitors. Certain amine compounds (gel inhibitors) are used to form highly concentrated, stable solutions of the emeraldine base form of polyaniline in numerous organic solvents from which coatings, films and fibers are readily prepared without problems associated with rapid gelation which occurs when concentrated solutions are attempted without the use of the gel inhibitors of the present invention. Tertiary amines are used to solubilize low-molecular weight fractions (M.sub.w <120,000, M.sub.n <30,000) of the pernigraniline, emeraldine, and leucoemeraldine oxidation states of polyaniline as concentrated (>20 wt. %) polyaniline solutions, while primary and secondary amines are used to produce solutions having 15-40 wt % of high-molecular weight polyaniline [M.sub.w.gtoreq.120,000, M.sub.n.gtoreq.30,000]. Concentrated solutions of polyaniline co-polymers or ring and/or nitrogen-substituted polyanilines may also be prepared.

Wang, Hsing-Lin (Los Alamos, NM); Mattes, Benjamin R. (Tesuque, NM)

2002-01-01T23:59:59.000Z

77

Absorber Alignment Measurement Tool for Solar Parabolic Trough Collectors: Preprint  

DOE Green Energy (OSTI)

As we pursue efforts to lower the capital and installation costs of parabolic trough solar collectors, it is essential to maintain high optical performance. While there are many optical tools available to measure the reflector slope errors of parabolic trough solar collectors, there are few tools to measure the absorber alignment. A new method is presented here to measure the absorber alignment in two dimensions to within 0.5 cm. The absorber alignment is measured using a digital camera and four photogrammetric targets. Physical contact with the receiver absorber or glass is not necessary. The alignment of the absorber is measured along its full length so that sagging of the absorber can be quantified with this technique. The resulting absorber alignment measurement provides critical information required to accurately determine the intercept factor of a collector.

Stynes, J. K.; Ihas, B.

2012-04-01T23:59:59.000Z

78

Container and method for absorbing and reducing hydrogen concentration  

DOE Patents (OSTI)

A method for absorbing hydrogen from an enclosed environment comprising providing a vessel; providing a hydrogen storage composition in communication with a vessel, the hydrogen storage composition further comprising a matrix defining a pore size which permits the passage of hydrogen gas while blocking the passage of gaseous poisons; placing a material within the vessel, the material evolving hydrogen gas; sealing the vessel; and absorbing the hydrogen gas released into the vessel by the hydrogen storage composition. A container for absorbing evolved hydrogen gas comprising: a vessel having an interior and adapted for receiving materials which release hydrogen gas; a hydrogen absorbing composition in communication with the interior, the composition defining a matrix surrounding a hydrogen absorber, the matrix permitting the passage of hydrogen gas while excluding gaseous poisons; wherein, when the vessel is sealed, hydrogen gas, which is released into the vessel interior, is absorbed by the hydrogen absorbing composition.

Wicks, George G. (Aiken, SC); Lee, Myung W. (North Augusta, SC); Heung, Leung K. (Aiken, SC)

2001-01-01T23:59:59.000Z

79

Method of absorbing UF.sub.6 from gaseous mixtures in alkamine absorbents  

DOE Patents (OSTI)

A method of recovering uranium hexafluoride from gaseous mixtures employing as an absorbent a liquid composition at least one of the components of which is chosen from the group consisting of ethanolamine, diethanolamine, and 3-methyl-3-amino-propane-diol-1,2.

Lafferty, Robert H. (Oak Ridge, TN); Smiley, Seymour H. (Oak Ridge, TN); Radimer, Kenneth J. (Little Falls, NJ)

1976-04-06T23:59:59.000Z

80

Electromagnetic radiation absorbers and modulators comprising polyaniline  

DOE Patents (OSTI)

A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero, and R.sup.1 and R.sup.2 are independently selected from the group containing of H, --OCH.sub.3, --CH.sub.3, --F, --Cl, --Br, --I, NR.sup.3 .sub.2, --NHCOR.sup.3, --OH, --O.sup.-, SR.sup.3, --OCOR.sup.3, --NO.sub.2, --COOH, --COOR.sup.3, --COR.sup.3, --CHO, and --CN, where R.sup.3 is a C.sub.1 to C.sub.8 alkyl, aryl or aralkyl group.

Epstein, Arthur J. (Bexley, OH); Ginder, John M. (Columbus, OH); Roe, Mitchell G. (Columbus, OH); Hajiseyedjavadi, Hamid (Columbus, OH)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Screening test of solid amine sorbents for CO2 capture  

Science Conference Proceedings (OSTI)

The atmospheric levels of many greenhouse gases are increasing, especially that of carbon dioxide, which has increased by 30% over the last 200 years. A wide variety of processes have been developed for the removal of acid gases such as carbon dioxide and hydrogen sulfide from gas streams including physical/chemical absorption, adsorption, membrane process, and oxygen recovery from O2/CO2 recycle combustion. The most common option for separating CO2 from flue gases or other gas streams is scrubbing the gas stream using various amine sorbents. The objective of this research is to study the total absorption/desorption capacity, cyclic capacity, absorption/desorption rate, and effect of blending amine on CO2 capture for several chemical solid sorbents.

Lee, Seungmoon (U. of Hartford, West Hartford, CT); Filburn, T.P. (U. of Hartford, West Hartford, CT); Gray, M.L.; Park, J-W. (Yonsei University, Seoul, Korea); Song, H-J. (Yonsei University, Seoul, Korea)

2008-10-01T23:59:59.000Z

82

Process for reducing organic compounds with calcium, amine, and alcohol  

DOE Patents (OSTI)

Olefins are produced by contacting an organic compound having at least one benzene ring with calcium metal, ethylenediamine, a low molecular weight aliphatic alcohol, and optionally a low molecular weight aliphatic primary amine, and/or an inert, abrasive particulate substance. The reduction is conducted at temperatures ranging from about -10.degree. C. to about 30.degree. C. or somewhat higher. Substantially all of the organic compounds are converted to corresponding cyclic olefins, primarily diolefins.

Benkeser, Robert A. (West Lafayette, IN); Laugal, James A. (Lostant, IL); Rappa, Angela (Baltimore, MD)

1985-01-01T23:59:59.000Z

83

Process for reducing organic compounds with calcium, amine, and alcohol  

DOE Patents (OSTI)

Olefins are produced by contacting an organic compound having at least one benzene ring with calcium metal, ethylenediamine, a low molecular weight aliphatic alcohol, and optionally a low molecular weight aliphatic primary amine, and/or an inert, abrasive particulate substance. The reduction is conducted at temperatures ranging from about [minus]10 C to about 30 C or somewhat higher. Substantially all of the organic compounds are converted to corresponding cyclic olefins, primarily diolefins.

Benkeser, R.A.; Laugal, J.A.; Rappa, A.

1985-08-06T23:59:59.000Z

84

Amine enriched solid sorbents for carbon dioxide capture  

DOE Patents (OSTI)

A new method for making low-cost CO.sub.2 sorbents that can be used in large-scale gas-solid processes. The new method entails treating a solid substrate with acid or base and simultaneous or subsequent treatment with a substituted amine salt. The method eliminates the need for organic solvents and polymeric materials for the preparation of CO.sub.2 capture systems.

Gray, McMahan L. (Pittsburgh, PA); Soong, Yee (Monroeville, PA); Champagne, Kenneth J. (Fredericktown, PA)

2003-04-15T23:59:59.000Z

85

Identification and Testing of Amines for Steam Generator Chemistry and Deposit Control: Part 3: Qualifications of Dodecylamine as an Amine Additive for Steam Generator Fouling Mitigation  

Science Conference Proceedings (OSTI)

This report summarizes an investigation to qualify an amine additive for a pressurized water reactor (PWR) field trial to reduce steam generator (SG) fouling. While the results to date continue to support a field trial, the apparent incompatibility of the amine additive with ion exchange cation resins will be a significant problem for some stations.

2004-12-01T23:59:59.000Z

86

Progress on the MICE Liquid Absorber Cooling and Cryogenic Distribution System  

E-Print Network (OSTI)

cold head with a gravity heat pipe. MICE ABSORBER OPERATIONthe heat leak into the absorber must be pipes into

2005-01-01T23:59:59.000Z

87

Understanding How Semiconductors Absorb Light | U.S. DOE Office...  

Office of Science (SC) Website

Understanding How Semiconductors Absorb Light Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy...

88

Energy-absorbent material and method of making - Energy Innovation ...  

This invention relates to materials which absorb and dissipate energy and/or selectively allow energy to be transmitted, methods of making same, and articles ...

89

Photon Absorbed-Dose-to-Water Primary Standards  

Science Conference Proceedings (OSTI)

Photon Absorbed-Dose-to-Water Primary Standards. ... and scattering/perturbation for the water calorimeter in both Co-60 and high-energy x-ray ...

2013-03-08T23:59:59.000Z

90

Impact of Film-Forming Amines on Condensate Polishing Ion-Exchange Resins  

Science Conference Proceedings (OSTI)

 A proprietary film-forming amine, also referred to as a filming amine, was tested in laboratory experimentation to evaluate potential impacts on condensate polisher ion-exchange resins—(Dowex MS 650C (H) and 550A (OH)—and a commercially available resin used for the measurement of online cation conductivity. The properties of filming amines to coat surfaces within the steam cycle of a power plant can also block ionic mass transport or have chemical interactions with ...

2013-04-30T23:59:59.000Z

91

Self-Assembly of Gold Nanoparticles at the Surface of Amine ...  

The chemical functionalization of the surface of the BNNTs was achieved following ammonia plasma irradiation in order to generate amine functional ...

92

Conversion of Cyclic Amines into Lactams for Synthesis of Nylons and Other Polymers  

Ames Laboratory researchers have developed a process for the conversion of cyclic amines into lactams, which may have utility for the production of nylons and other industrial polymers.

93

CdSe/ZnS Nanoparticle Composites with Amine-Functionalized Polyfluoren...  

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

CdSeZnS Nanoparticle Composites with Amine-Functionalized Polyfluorene Derivatives for Polymeric Light-Emitting Diodes: Synthesis, Photophysical Properties, and the...

94

Secondary Organic Aerosol Formation from Primary Aliphatic Amines with Nitrate Radical  

E-Print Network (OSTI)

back- ground atmospheric aerosol in the UK determined inof secondary organic aerosols, Atmos. Environ. , 31, 3921–et al. : Secondary organic aerosol formation from amines

Malloy, Q G J; Qi, L; Warren, B; Cocker III, D R; Erupe, M E; Silva, P J

2009-01-01T23:59:59.000Z

95

Validation of high performance pneumo-hydraulic shock absorbers  

Science Conference Proceedings (OSTI)

The paper discusses a theoretical and experimental approach to the validation of high performance shock absorbers, based on a flexible and innovative procedure. This type of components needs specific and unconventional tests, in order to detect the actual ... Keywords: oil-hydraulics, shock absorbers, validation, virtual instrumentation

Enrico Ravina

2006-02-01T23:59:59.000Z

96

The Cooling of a Liquid Absorber using a Small Cooler  

E-Print Network (OSTI)

helium gas at 14 K to a heat exchanger on the absorber tank.S Fill Neck 304 S S H2 Heat Exchanger T5 H T4 H2 Fill ValveTube Seal Cool Down Heat Exchanger Absorber Heater H T2

Baynham, D.E.; Bradshaw, T.W.; Green, M.A.; Ishimoto, S.; Liggins, N.

2005-01-01T23:59:59.000Z

97

ABSORBING WIPP BRINES: A TRU WASTE DISPOSAL STRATEGY  

SciTech Connect

Los Alamos National Laboratory (LANL) has completed experiments involving 15 each, 250- liter experimental test containers of transuranic (TRU) heterogeneous waste immersed in two types of brine similar to those found in the underground portion of the Waste Isolation Pilot Plant (WIPP). To dispose of the waste without removing the brine from the test containers, LANL added commercially available cross-linked polyacrylate granules to absorb the 190 liters of brine in each container, making the waste compliant for shipping to the WIPP in a Standard Waste Box (SWB). Prior to performing the absorption, LANL and the manufacturer of the absorbent conducted laboratory and field tests to determine the ratio of absorbent to brine that would fully absorb the liquid. Bench scale tests indicated a ratio of 10 parts Castile brine to one part absorbent and 6.25 parts Brine A to one part absorbent. The minimum ratio of absorbent to brine was sought because headspace in the containers was limited. However, full scale testing revealed that the ratio should be adjusted to be about 15% richer in absorbent. Additional testing showed that the absorbent would not apply more than 13.8 kPa pressure on the walls of the vessel and that the absorbent would still function normally at that pressure and would not degrade in the approximately 5e-4 Sv/hr radioactive field produced by the waste. Heat generation from the absorption was minimal. The in situ absorption created a single waste stream of 8 SWBs whereas the least complicated alternate method of disposal would have yielded at least an additional 2600 liters of mixed low level liquid waste plus about two cubic meters of mixed low level solid waste, and would have resulted in higher risk of radiation exposure to workers. The in situ absorption saved $311k in a combination of waste treatment, disposal, material and personnel costs compared to the least expensive alternative and $984k compared to the original plan.

Yeamans, D. R.; Wrights, R. S.

2002-02-25T23:59:59.000Z

98

Absorbing WIPP brines : a TRU waste disposal strategy.  

SciTech Connect

Los Alamos National Laboratory (LANL) has completed experiments involving 15 each, 250-liter experimental test containers of transuranic (TRU) heterogeneous waste immersed in two types of brine similar to those found in the underground portion of the Waste Isolation Pilot Plant (WIPP). To dispose of the waste without removing the brine from the test containers, LANL added commercially available cross-linked polyacrylate granules to absorb the 190 liters of brine in each container, making the waste compliant for shipping to the WlPP in a Standard Waste Box (SWB). Prior to performing the absorption, LANL and the manufacturer of the absorbent conducted laboratory and field tests to determine the ratio of absorbent to brine that would fully absorb the liquid. Bench scale tests indicated a ratio of 10 parts Castile brine to one part absorbent and 6.25 parts Brine A to one part absorbent. The minimum ratio of absorbent to brine was sought because headspace in the containers was limited. However, full scale testing revealed that the ratio should be adjusted to be about 15% richer in absorbent. Additional testing showed that the absorbent would not apply more than 13.8 kPa pressure on the walls of the vessel and that the absorbent would still function normally at that pressure and would not degrade in the approximately 5e-4 Sv/hr radioactive field produced by the waste. Heat generation from the absorption was minimal. The in situ absorption created a single waste stream of 8 SWBs whereas the least complicated alternate method of disposal would have yielded at least an additional 2600 liters of mixed low level liquid waste plus about two cubic meters of mixed low level solid waste, and would have resulted in higher risk of radiation exposure to workers. The in situ absorption saved $3 1 lk in a combination of waste treatment, disposal, material and personnel costs compared to the least expensive alternative and $984k compared to the original plan.

Yeamans, D. R. (David R.); Wright, R. (Robert)

2002-01-01T23:59:59.000Z

99

Approaches for regeneration of amine-carboxylic acid extracts  

Science Conference Proceedings (OSTI)

Extraction processes based on reversible chemical complexation can be useful for separation of polar organics from dilute solution. Tertiary amines are effective extractants for the recovery of carboxylic acids from aqueous solution. The regeneration of aminecarboxylic acid extracts is an important step which strongly influences the economic viability of the separation process. Several regeneration methods are critically reviewed, and the factors that affect swing regeneration processes, including temperature-swing, diluent composition-swing and pH-swing with a volatile base are discussed. Interest in this area comes from interest in treatment of waste streams, particularly in petrochemical and fermentation manufacture.

Dai, Y.; King, C.J.

1995-07-01T23:59:59.000Z

100

Thin-film absorber for a solar collector  

DOE Green Energy (OSTI)

This invention pertains to energy absorbers for solar collectors, and more particularly to high performance thin film absorbers. The solar collectors comprising the absorber of this invention overcome several problems seen in current systems, such as excessive hardware, high cost and unreliability. In the preferred form, the apparatus features a substantially rigid planar frame with a thin film window bonded to one planar side of the frame. An absorber in accordance with the present invention is comprised of two thin film layers that are sealed perimetrically. In a preferred embodiment, thin film layers are formed from a metal/plastic laminate. The layers define a fluid-tight planar envelope of large surface area to volume through which a heat transfer fluid flows. The absorber is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

Wilhelm, W.G.

1982-02-09T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Lithium Ion Solvation: Amine and Unsaturated Hydrocarbon Solvates of Lithium Hexamethyldisilazide (LiHMDS)  

E-Print Network (OSTI)

Lithium Ion Solvation: Amine and Unsaturated Hydrocarbon Solvates of Lithium Hexamethyldisilazide, and 13C NMR spectroscopic studies of 6Li-15N labeled lithium hexamethyldisilazide ([6Li,15N]- Li ligand structure and lithium amide aggregation state is a complex and sensitive function of amine alkyl

Collum, David B.

102

Electron and hydrogen atom transfer mechanisms for the photoreduction of o-quinones. Visible light induced photoreactions of. beta. -lapachone with amines, alcohols, and amino alcohols  

DOE Green Energy (OSTI)

{beta}-Lapachone (1), a substituted o-naphthoquinone absorbing into the visible ({lambda}{sub max} = 424 nm in benzene), is cleanly and efficiently reduced to the corresponding semiquinone radical upon photolysis in degassed solutions with alcohols, amines, and {beta}-amino alcohols. The course and products of these photoreactions have been followed by NMR, ESR, fluorescence, and absorption spectroscopy. For all three types of reductant the overall reaction involves 2e{sup {minus}} oxidation of the donor, and the quantum efficiencies show a dependence upon quinone concentration indicative of the role of a second dark reduction of 1 by products of the primary photolysis. For amines and amino alcohols the reaction is initiated by single electron transfer quenching of triplet 1. For triethylamine the mechanism is indicated to be a sequence of two electron transfer-proton transfer steps culminating in two semiquinone radicals and the enamine Et{sub 2}NCH{double bond}CH{sub 2}. For amino alcohols a C-C cleavage concurrent with deprotonation of the alcohol (oxidative photofragmentation) occurs, in competition with reverse electron transfer, following the quenching step. For both amines and amino alcohols, limiting efficiencies of reaction approach 2 (for QH{sup {sm bullet}} formation). In contrast, both 2-propanol and benzyl alcohol are oxidized by excited states of 1 with much lower efficiency. The probable mechanism for photooxidation of the alcohols involves a H atom abstraction quenching of the excited state followed by an electron transfer-proton transfer sequence in which a ground-state 1 is reduced. Lower limiting efficiencies for photoreduction of 1 by the alcohols are attributed to inefficiencies of net H-atom transfer in the quenching step. 54 refs., 3 figs., 9 tabs.

Xiaohong Ci; Whitten, D.G. (Univ. of Rochester, NY (USA)); Silveira da Silva, R.; Nicodem, D. (Universidade Federal do Rio de Janeiro (Brazil))

1989-02-15T23:59:59.000Z

103

Study of segmented absorbers of thermal solar compound parabolic collectors  

SciTech Connect

One of the most promising means of improving the performance of solar thermal collectors is by reducing the energy lost by the host absorber. One way to do this, not currently part of the technology, is by recognizing that the absorber is usually not irradiated uniformly. Therefore, it is possible to construct an absorber of thermally isolated segments, circulate the fluid in sequence from low to high irradiance segments, and reduce loss by improving effective concentration. This procedure works even for ideal concentrators, without violating Winston's theorem.

Keita, M.

1988-01-01T23:59:59.000Z

104

Working Group Review of Sampling and Analytical Methods for Amines and Amine Degradation Products in Post-Combustion Carbon Capture Technologies  

Science Conference Proceedings (OSTI)

The use of amine solvents in post-combustion carbon capture (PCCC) facilities has increased over the last several years, and subsequently, a clear understanding of the potential human and environmental impacts of those solvents has become increasingly more important. A critical need identified by many researchers in the PCCC and environmental chemistry communities is to standardize stack sampling and analytical methods for amines and their degradation products. This led to the Electric Power ...

2012-12-31T23:59:59.000Z

105

Design of Cruzain Inhibitors for the Treatment of Chagas Disease AND Development and Application of Methods for the Asymmetric Synthesis of ?-Branched Amines  

E-Print Network (OSTI)

quinolin-6-ylmethyl)hex-1-yn-3-amine (2.8c). Procedure B was3-Acetylphenyl)hex-2-enyl)-2-methylpropanesulfinyl amine (

Brak, Katrien

2010-01-01T23:59:59.000Z

106

MHK Technologies/Floating absorber | Open Energy Information  

Open Energy Info (EERE)

absorber absorber < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Floating absorber.jpg Technology Profile Primary Organization Euro Wave Energy Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The main module consists of Two drive wheels on each side of the vertical running rod which always move in the opposite direction A unique connection of two camclutches which operate such that at all time the correct rotating direction in one of the drive wheels run the generator Generator and buoyancy elements Technology Dimensions Device Testing Date Submitted 27:29.6

107

MHK Technologies/Trondheim Point Absorber | Open Energy Information  

Open Energy Info (EERE)

Trondheim Point Absorber Trondheim Point Absorber < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Trondheim Point Absorber.jpg Technology Profile Primary Organization Norwegian University of Science and Technology CONWEC AS Technology Resource Click here Wave Technology Type Click here Point Absorber - Floating Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The floating buoy can oscillate along a strut that at its lower end is connected to a universal joint on an anchor on the sea bed The water depth which depends on the tide is in the range of 4 to 7 m On the top of the hull the latching mechanism and one of the guiding roller units are visible As the bottom of the hull is open sea water is flowing into and out from an inner chamber where the water surface acts as the piston of an air pump

108

Overcoming the far-field diffraction limit via absorbance modulation  

E-Print Network (OSTI)

Diffraction limits the resolution of far-field lithography and imaging to about half of the wavelength, which greatly limits the capability of optical techniques. The proposed technique with absorbance modulation aims to ...

Tsai, Hsin-Yu Sidney

2011-01-01T23:59:59.000Z

109

Tropical Tropospheric-Only Responses to Absorbing Aerosols  

Science Conference Proceedings (OSTI)

Absorbing aerosols affect the earth’s climate through direct radiative heating of the troposphere. This study analyzes the tropical tropospheric-only response to a globally uniform increase in black carbon, simulated with an atmospheric general ...

Geeta G. Persad; Yi Ming; V. Ramaswamy

2012-04-01T23:59:59.000Z

110

An Upper Gravity-Wave Absorbing Layer for NWP Applications  

Science Conference Proceedings (OSTI)

Although the use of a damping layer near the top of a computational model domain has proven effective in absorbing upward-propagating gravity-wave energy in idealized simulations, this technique has been less successful in real atmospheric ...

J. B. Klemp; J. Dudhia; A. D. Hassiotis

2008-10-01T23:59:59.000Z

111

Liquid absorbent solutions for separating nitrogen from natural gas  

DOE Patents (OSTI)

Nitrogen-absorbing and -desorbing compositions, novel ligands and transition metal complexes, and methods of using the same, which are useful for the selective separation of nitrogen from other gases, especially natural gas.

Friesen, Dwayne T. (Bend, OR); Babcock, Walter C. (Bend, OR); Edlund, David J. (Redmond, OR); Lyon, David K. (Bend, OR); Miller, Warren K. (Bend, OR)

2000-01-01T23:59:59.000Z

112

Scientists Identify New Family of Iron-Based Absorber Materials...  

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

Use of Earth-abundant materials in solar absorber films is critical for expanding the reach of photovoltaic (PV) technologies. The use of Earth-abundant and inexpensive Fe in PV...

113

Energy-absorbent Material and Method of Making  

This invention relates to materials that absorb and dissipate energy and/or selectively allow energy to be transmitted – in particular, polymeric materials that include polyol(s) such as polyethers, polyesters, polyether/esters, acrylics, plus other ...

114

The Cooling of a Liquid Absorber using a Small Cooler  

E-Print Network (OSTI)

absorber is to use a gravity heat pipe. Liquid hydrogen (orcirculates the liquid. A heat pipe can have a very low DT (heat pipe. A copper strap shown is

Baynham, D.E.; Bradshaw, T.W.; Green, M.A.; Ishimoto, S.; Liggins, N.

2005-01-01T23:59:59.000Z

115

Handbook on Neutron Absorber Materials for Spent Nuclear Fuel Applications  

Science Conference Proceedings (OSTI)

This handbook is intended to become a single source of information regarding technical characteristics of neutron absorber materials that have been used for storage and transportation of spent nuclear fuel as well as to provide a summary of users' experience.

2005-12-08T23:59:59.000Z

116

National program plan for absorber surfaces R and D  

DOE Green Energy (OSTI)

The optical properties - solar absorptance (..cap alpha../sub s/) and thermal emittance (epsilon/sub t/) - of the receiver surface are important in a wide range of solar energy conversion devices from passive solar buildings to sophisticated two axis tracking concentrators. This report describes a National Plan for Absorber Surfaces R and D and includes the background information (available absorber materials and characteristics, applications, and probable benefits) used to derive the plan.

Call, P. J.

1979-01-01T23:59:59.000Z

117

Instrumentation for the absorbers in the low Beta* Insertions of the LHC  

E-Print Network (OSTI)

ll~ A ccr cu ~:~ 'if' Instrumentation for the Absorbers inLBNL-42180 CBP Note-251 Instrumentation for the Absorbers inPaper CBP Note 251 Instrumentation for the Absorbers in the

Turner, W.C.

2011-01-01T23:59:59.000Z

118

Amine templated zinc phosphates phases for membrane separations  

Science Conference Proceedings (OSTI)

This research is focused on developing inorganic molecular sieve membranes for light gas separations such as hydrogen recovery and natural gas purification, and organic molecular separations, such as chiral enantiomers. The authors focus on zinc phosphates because of the ease in crystallization of new phases and the wide range of pore sizes and shapes obtained. With hybrid systems of zinc phosphate crystalline phases templated by amine molecules, the authors are interested in better understanding the association of the template molecules to the inorganic phase, and how the organic transfers its size, shape, and (in some cases) chirality to the bulk. Furthermore, the new porous phases can also be synthesized as thin films on metal oxide substrates. These films allow one to make membranes from organic/inorganic hybrid systems, suitable for diffusion experiments. Characterization techniques for both the bulk phases and the thin films include powder X-ray diffraction, TGA, Scanning Electron Micrograph (SEM) and Electron Dispersive Spectrometry (EDS).

Nenoff, T.M.; Chavez, A.V.; Thoma, S.G.; Provencio, P. [Sandia National Labs., Albuquerque, NM (United States); Harrison, W.T.A. [Univ. of Western Australia, Nedlands (Australia); Phillips, M.L.F. [Gemfire Corp., Palo Alto, CA (United States)

1998-08-01T23:59:59.000Z

119

Amine Scrubbing for CO{sub 2} Capture  

Science Conference Proceedings (OSTI)

Amine scrubbing has been used to separate carbon dioxide (CO{sub 2}) from natural gas and hydrogen since 1930. It is a robust technology and is ready to be tested and used on a larger scale for CO{sub 2} capture from coal-fired power plants. The minimum work requirement to separate CO{sub 2} from coal-fired flue gas and compress CO{sub 2} to 150 bar is 0.11 megawatt-hours per metric ton of CO{sub 2}. Process and solvent improvements should reduce the energy consumption to 0.2 megawatt-hour per ton of CO{sub 2}. Other advanced technologies will not provide energy-efficient or timely solutions to CO{sub 2} emission from conventional coal-fired power plants.

Rochelle, G.T. [University of Texas at Austin, Austin, TX (United States). Dept. of Chemical Engineering

2009-09-15T23:59:59.000Z

120

Screening of cosurfactant-free slugs: Project BE4A, milestone 12, FY87: Topical report. [Amine oxides  

SciTech Connect

This report describes our initial work with amine oxides as surfactants for chemical flooding. Our work on carboxymethylated ethoxylates was previously reported in NIPER-228. Amine oxides have high salinity range, yield low interfacial tensions, have high solubilization parameters, and, at the same time, increase the viscosity of the surfactant slug without the addition of polymer, and thus avoiding problems caused by surfactant - polymer interactions. The oil displacement results reported incorporate alcohol as a cosurfactant in the amine oxide formulations, however, compounds that attempt to incorporate the cosolvent moiety into the amine oxide molecule (ethoxylated or propoxylated amine oxides) are being studied at NIPER. 60 refs., 4 tabs.

Olsen, D.K.

1988-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Heat and Mass transfer in an absorption process with mixed absorbent solution.  

E-Print Network (OSTI)

??Falling film absorption process is studied for the simulation of the absorber of the absorption solar cooling system. In this study, we use different absorbents… (more)

Chi, Ten-yen

2011-01-01T23:59:59.000Z

122

Concentrating aqueous volatile fatty acid salt solutions using a tertiary amine mixture  

E-Print Network (OSTI)

Lee (1993) has shown that tertiary amines are able to hics. extract water from low-concentration calcium acetate and sodium acetate solutions. This thesis extends the previous work to include calcium propionate and butyrate. Amine extraction may be used to selectively remove water from a fermentation broth thus concentrating calcium acetate, propionate, and butyrate. Compared to competing technologies that extract undissociated acids from a volatile fatty acid fermentation broth, extracting water with tertiary amines allows for higher pH levels in the broth resulting in greater productivity. Specifically, triethylamine and N,N-diethyl-methylamine in a 1:2 volumetric mixture are superior to any other examined mixture or single amine for extracting water at 40[]C, the proposed fermentation temperature (Lee, 1993; Davison et al., 1966, 1967). Once the acid salts have been concentrated, a variety of techniques are available to convert the concentrated salts into other products such as ketones, alcohols, and acids. At low temperatures, the low-molecular-weight amine mixture has a high affinity for water. By raising the temperature 20 to 25[]C, the water separates from the amine allowing for convenient solvent regeneration of the amine. The distribution coefficients, [] , measure the selectivity of concentrating calcium salts in the aqueous phase. The distribution coefficients generally vary as follows: [] thus, there is less selectivity as the aliphatic group increases in size. The amine mixture was used to extract water from actual fermentation broth to determine whether possible surfactants in the broth interfere with the extraction. Prior to extraction, the fermentation broth was adjusted to pH 11.5 by adding a small amount of lime. The high pH precipitate protein which can be recycled to the fermentor or collected for animal feed. Through 15 extraction runs, no degradation of the amine was observed.

Gaskin, David J

1997-01-01T23:59:59.000Z

123

Categorical Exclusion Determinations: Fossil Energy | Department of Energy  

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

August 16, 2010 August 16, 2010 CX-003443: Categorical Exclusion Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: A9, A11, A14 Date: 08/16/2010 Location(s): San Francisco, California Office(s): Fossil Energy, National Energy Technology Laboratory August 16, 2010 CX-003442: Categorical Exclusion Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: B3.6 Date: 08/16/2010 Location(s): Lexington, Kentucky Office(s): Fossil Energy, National Energy Technology Laboratory August 11, 2010 CX-003396: Categorical Exclusion Determination Environmental Mechanical Testing Laboratory Construction CX(s) Applied: B3.6

124

MHK Technologies/WEGA wave energy gravitational absorber | Open Energy  

Open Energy Info (EERE)

WEGA wave energy gravitational absorber WEGA wave energy gravitational absorber < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage WEGA wave energy gravitational absorber.jpg Technology Profile Primary Organization Sea for Life Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description The WEGA device is an articulated suspended body semi submerged attached to a mount structure that oscillates in an elliptical orbit with the passage of the waves The movement of the body drives an hydraulic cylinder which pushes high pressure fluid through an accumulator and an hydraulic motor driving the generator that produces energy The articulated body attaches to the mount structure through a rotary head which allows it to adapt to the direction wave propagation Multiple devices can be placed on a single mount structure according to the size and place of the structure

125

Experimental investigation and model verification for a GAX absorber  

SciTech Connect

In the ammonia-water generator-absorber heat exchange (GAX) absorption heat pump, the heat and mass transfer processes which occur between the generator and absorber are the most crucial in assuring that the heat pump will achieve COPs competitive with those of current technologies. In this study, a model is developed for the heat and mass transfer processes that occur in a counter-current vertical fluted tube absorber (VFTA) with inserts. Correlations for heat and mass transfer in annuli are used to model the processes in the VTA. Experimental data is used to validate the model for three different insert geometries. Comparison of model results with experimental data provides insight into model corrections necessary to bring the model into agreement with the physical phenomena observed in the laboratory.

Palmer, S.C. [Naval Academy, Annapolis, MD (United States). Mechanical Engineering Dept.; Christensen, R.N. [Ohio State Univ., Columbus, OH (United States). Mechanical Engineering Dept.

1996-12-31T23:59:59.000Z

126

Identification and Testing of Amines for Steam Generator Chemistry and Deposit Control  

Science Conference Proceedings (OSTI)

This report summarizes an investigation on optimization of water chemistry to reduce steam generator (SG) fouling. Researchers sought to identify amine additives that can minimize fouling in pressurized water reactor (PWR) steam generators.

2002-12-09T23:59:59.000Z

127

Transition metal-catalyzed process for addition of amines to carbon-carbon double bonds  

DOE Patents (OSTI)

The present invention is directed to a process for addition of amines to carbon-carbon double bonds in a substrate, comprising: reacting an amine with a compound containing at least one carbon-carbon double bond in the presence a transition metal catalyst under reaction conditions effective to form a product having a covalent bond between the amine and a carbon atom of the former carbon-carbon double bond. The transition metal catalyst comprises a Group 8 metal and a ligand containing one or more 2-electron donor atoms. The present invention is also directed to enantioselective reactions of amine compounds with compounds containing carbon-carbon double bonds, and a calorimetric assay to evaluate potential catalysts in these reactions.

Hartwig, John F. (Durham, CT); Kawatsura, Motoi (Chatham, NJ); Loeber, Oliver (New Haven, CT)

2002-01-01T23:59:59.000Z

128

Slipstream Pilot Scale Demonstration of a Novel Amine-Based Post...  

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

Amine-Based Post-Combustion Process Technology for CO 2 Capture from Coal-Fired Power Plant Flue Gas Background The mission of the U.S. Department of EnergyNational Energy...

129

Energy absorber for sodium-heated heat exchanger  

DOE Patents (OSTI)

A heat exchanger is described in which water-carrying tubes are heated by liquid sodium and in which the results of accidental contact between the water and the sodium caused by failure of one or more of the water tubes is minimized. An energy absorbing chamber contains a compressible gas and is connected to the body of flowing sodium by a channel so that, in the event of a sodium-water reaction, products of the reaction will partially fill the energy absorbing chamber to attenuate the rise in pressure within the heat exchanger.

Essebaggers, J.

1975-12-01T23:59:59.000Z

130

Sealed absorbed electrolyte battery with bulge compensating end cells  

Science Conference Proceedings (OSTI)

A sealed absorbed electrolyte battery is described comprising, in combination: a sealed container divided into working cells by internal partition walls; each working cell containing an electrode stack comprising positive and negative plates and substantially porous separators intimately contacting and separating the positive and negative plates; an electrolyte substantially completely absorbed in the plates and separators; the working cells being dimensioned to hold the plates and separators within the working cell in contact with each other; and bulge compensating auxiliary cells for accommodating gas pressure changes within the battery without substantially deforming the working cells.

Oswald, T.L.

1988-03-08T23:59:59.000Z

131

Integrity of neutron-absorbing components of LWR fuel systems  

Science Conference Proceedings (OSTI)

A study of the integrity and behavior of neutron-absorbing components of light-water (LWR) fuel systems was performed by Pacific Northwest Laboratory (PNL) and sponsored by the US Department of Energy (DOE). The components studies include control blades (cruciforms) for boiling-water reactors (BWRs) and rod cluster control assemblies for pressurized-water reactors (PWRs). The results of this study can be useful for understanding the degradation of neutron-absorbing components and for waste management planning and repository design. The report includes examples of the types of degradation, damage, or failures that have been encountered. Conclusions and recommendations are listed. 84 refs.

Bailey, W.J.; Berting, F.M.

1991-03-01T23:59:59.000Z

132

NETL: SO2-Resistent Immobilized Amine Sorbents for CO2 Capture  

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

Post-Combustion CO2 Emissions Control Post-Combustion CO2 Emissions Control SO2-Resistent Immobilized Amine Sorbents for CO2 Capture Project No.: DE-FE0001780 DOE is partnering with the University of Akron (Akron) to conduct research and training to develop an effective solid amine sorbent for large scale post-combustion CO2 capture from power plant flue gas. Sorbent materials developed by Akron consist of immobilized carbon and hydrogen structures (paraffin) distributed inside of the amine pores and aromatic amines located on the external surface and the pore mouth of the sorbent. The immobilized paraffinic amines have been shown to display excellent CO2 capture capacity by adsorbing CO2 at temperatures below 55 °C and releasing it at temperatures between 80-120 °C. This effort will focus on increasing scientific understanding of the chemical and physical principles affecting amines deposited on a series of porous solids that generally have large pore space, high surface area, and/or high thermal conductivity.

133

Performance characteristics and modeling of carbon dioxide absorption by amines in a packed column  

Science Conference Proceedings (OSTI)

Carbon dioxide (CO[sub 2]) is widely recognized as a major greenhouse gas contributing to global warming. To mitigate the global warming problem, removal of CO[sub 2] from the industrial flue gases is necessary. Absorption of carbon dioxide by amines in a packed column was experimentally investigated. The amines employed in the present study were the primary mono-ethanolamine (MEA) and tertiary N-methyldiethanolamine (MDEA), two very popular amines widely used in the industries for gas purification. The CO[sub 2] absorption characteristics by these two amines were experimentally examined under various operating conditions. A theoretical model was developed for describing the CO[sub 2] absorption behavior. Test data have revealed that the model predictions and the observed CO[sub 2] absorption breakthrough curves agree very well, validating the proposed model. Preliminary regeneration tests of exhausted amine solution were also conducted. The results indicated that the tertiary amine is easier to regenerate with less loss of absorption capacity than the primary one.

Lin, S.H.; Shyu, C.T. (Yuan Ze Univ., Taoyuan (Taiwan, Province of China). Dept. of Chemical Engineering)

1999-01-01T23:59:59.000Z

134

Effects of amines on formation of sub-3 nm particles and their subsequent growth  

SciTech Connect

Field observations and quantum chemical calculations suggest that amines can be important for formation of nanometer size particles. Amines and ammonia often have common atmospheric emission sources and the similar chemical and physical properties. While the effects of ammonia on aerosol nucleation have been previously investigated, laboratory studies of homogeneous nucleation involving amines are lacking. We have made kinetics studies of multicomponent nucleation (MCN) with sulfuric acid, water, ammonia and amines under conditions relevant to the atmosphere. Low concentrations of aerosol precursors were measured with chemical ionization mass spectrometers (CIMS) to provide constrained precursor concentrations needed for nucleation. Particle sizes larger than {approx}2 nm were measured with a nano-differential mobility analyzer (nano-DMA), and number concentrations of particles larger than {approx}1 nm were measured with a particle size magnifier (PSM). Our observations provide the laboratory evidence that amines indeed can participate in aerosol nucleation and growth at the molecular cluster level. The enhancement of particle number concentrations due to several atmospherically relevant amine compounds and ammonia were related to the basicity of these compounds, indicating that acid-base reactions may contribute to the formation of sub-3 nm particles.

Yu H.; McGraw R.; Lee S.-H.

2012-01-28T23:59:59.000Z

135

Use of amine oxide surfactants for chemical flooding EOR (enhanced oil recovery)  

Science Conference Proceedings (OSTI)

The use of amine oxides with and without alcohols as cosolvents, and in combination with other surfactants as mixed micellar formulations for enhanced oil recovery by surfactant flooding was investigated. Amine oxides are a salt-tolerant class of surfactants that produce low interfacial tension and can develop viscosity without the addition of polymers. These salt-tolerant formulations generate three-phase regions with hydrocarbons over a broad salinity range, develop moderate solubilization, and produce low interfacial tensions, however oil recovery from amine oxide-alcohol phase behavior optimized formulations was directly dependent upon the quantity of surfactant injected. The large pore volume and high concentration of surfactant required prohibits their economic use as the primary surfactant in chemical flooding EOR. Dimethylalkylamine oxides are useful as cosurfactants and viscosifiers in formulations with other surfactants for chemical flooding EOR but the use of ethoxylated and propoxylated amine oxides should be avoided due to the decomposition of these amine oxides under reservoir conditions. Phase behavior, phase inversion temperatures, and viscosity scans have been correlated with surfactant structures to provide a guide for amine oxide applications in chemical flooding. 36 refs., 5 figs., 6 tabs.

Olsen, D.K.

1989-11-01T23:59:59.000Z

136

Compatibility of PWR gasket and packing materials and resins with organic amines  

SciTech Connect

The objectives of this testing program were two-fold: (1) to examine the compatibility of morpholine and five other amines with several synthetic polymeric materials useful for gaskets and seals in pressurized water reactor (PWR) secondary cycles and (2) to examine the potential chemical degradation of ion exchange (IX) resins by morpholine and ethanolamine. The screening of the polymeric materials in the amines was performed by heating small samples of the materials in the amines for one week to one month. Interaction of the amines with the materials was accelerated by testing at elevated temperatures and at high amine concentrations. Two materials (Kalrez and EPDM) that are potentially useful in high-temperature and high-pressure steam systems were tested in morpholine solutions in sealed bombs at 260{degrees}C (500{degrees}). After heating in the aqueous amine solutions, changes in weight were measured and the samples were visually examined for physical changes, such as swelling or cracking. Selected materials underwent testing for hardness, elongation, and tensile strength after heating in morpholine for one month. This document provides the results of this testing program.

Keneshea, F.J.; Hobart, S.A. (Adams and Hobart Consulting Engineers, Fremont, CA (United States)); Camenzind, M.J. (Balazs Analytical Lab., Mountain View, CA (United States))

1992-07-01T23:59:59.000Z

137

Methods for applying microchannels to separate methane using liquid absorbents, especially ionic liquid absorbents from a mixture comprising methane and nitrogen  

SciTech Connect

Methods of using microchannel separation systems including absorbents to improve thermal efficiency and reduce parasitic power loss. Energy is typically added to desorb methane and then energy or heat is removed to absorb methane using a working solution. The working solution or absorbent may comprise an ionic liquid, or other fluids that demonstrate a difference in affinity between methane and nitrogen in a solution.

Tonkovich, Anna Lee Y. (Dublin, OH); Litt, Robert D. (Westerville, OH); Dongming, Qiu (Dublin, OH); Silva, Laura J. (Plain City, OH); Lamont, Micheal Jay (Plain City, OH); Fanelli, Maddalena (Plain City, OH); Simmons, Wayne W. (Plain city, OH); Perry, Steven (Galloway, OH)

2011-10-04T23:59:59.000Z

138

Gas compressor with side branch absorber for pulsation control  

SciTech Connect

A method and system for reducing pulsation in lateral piping associated with a gas compressor system. A tunable side branch absorber (TSBA) is installed on the lateral piping. A pulsation sensor is placed in the lateral piping, to measure pulsation within the piping. The sensor output signals are delivered to a controller, which controls actuators that change the acoustic dimensions of the SBA.

Harris, Ralph E. (San Antonio, TX); Scrivner, Christine M. (San Antonio, TX); Broerman, III, Eugene L. (San Antonio, TX)

2011-05-24T23:59:59.000Z

139

Measurement of Absorption in Rooms with Sound Absorbing Ceilings  

Science Conference Proceedings (OSTI)

Serious difficulties have been encountered in attempts to measure the absorption coefficients of sound absorbing ceilings in large offices. An analysis of the sound field is made and it is concluded (1) that the reverberation time formula is usually invalid if the absorption is concentrated on one surface of the room

J. R. Power

1938-01-01T23:59:59.000Z

140

Progress in Absorber R&D 2: Windows  

E-Print Network (OSTI)

A program is underway to develop liquid-hydrogen energy absorbers for ionization cooling of muon-beam transverse emittance. Minimization of multiple-scattering-induced beam heating requires thin windows. The first window prototype has been destructively tested, validating the finite-element-analysis model and the design approach.

D. M. Kaplan; E. L. Black; K. W. Cassel; S. Geer; M. Popovic; S. Ishimoto; K. Yoshimura; L. Bandura; M. A. Cummings; A. Dyshkant; D. Kubik; D. Hedin; C. Darve; Y. Kuno; D. Errede; M. Haney; S. Majewski; M. Reep; D. Summers

2001-08-17T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Progress in Absorber R&D for Muon Cooling  

E-Print Network (OSTI)

A stored-muon-beam neutrino factory may require transverse ionization cooling of the muon beam. We describe recent progress in research and development on energy absorbers for muon-beam cooling carried out by a collaboration of university and laboratory groups.

D. M. Kaplan; E. L. Black; M. Boghosian; K. W. Cassel; R. P. Johnson; S. Geer; C. J. Johnstone; M. Popovic; S. Ishimoto; K. Yoshimura; L. Bandura; M. A. Cummings; A. Dyshkant; D. Hedin; D. Kubik; C. Darve; Y. Kuno; D. Errede; M. Haney; S. Majewski; M. Reep; D. Summers

2001-08-15T23:59:59.000Z

142

Flue Gas Desulfurization Scrubber Maintenance Guide: Absorber Area  

Science Conference Proceedings (OSTI)

The Flue Gas Desulfurization Scrubber Maintenance Guide: Absorber Area provides fossil plant maintenance personnel with current maintenance information on this system and will help to improve the reliability of and reduce the maintenance costs for this area of their scrubber system.

2008-12-18T23:59:59.000Z

143

On experiments taken by the active shock absorber test stand  

Science Conference Proceedings (OSTI)

Suspension system influences both the comfort and safety of the passengers. In the paper, energy recuperation and management in automotive suspension systems with linear electric motors that are controlled by a designed H8 controller to generate a variable ... Keywords: active vehicle shock absorber, energy control, energy recuperation, linear electric motor, robust control

Katerina Hyniova; Ladislava Smitkova-Janku; Jaroslav Honcu; Antonin Stribrsky

2012-01-01T23:59:59.000Z

144

Controlling Nanoparticle Aggregation in Colloidal Microwave Absorbers via Interface Chemistry  

E-Print Network (OSTI)

paints, and particle laden polymeric layers, are passive in nature. There is some work with active demonstrated where the number of single-stranded DNA per particle determines the ultimate size bias across the absorbing layer is an effective tuning mechanism for modulation of the reflected

Stowell, Michael

145

Metal Monolithic Amine-grafted Zeolite for CO{sub 2} Capture  

SciTech Connect

The solid amine sorbent for CO{sub 2} capture process has advantages of simplicity and low operating cost compared to the MEA (monoethanolamine) process. Solid amine sorbents reported so far suffered from either low CO{sub 2} capture capacity or low stability. The solid amine sorbent developed in this project exhibited more than 3.2 mmol/g and degraded less than 10% even after 500 cycles of heating and cooling in absence of steam. The presence of steam further enhanced CO{sub 2} capture capacity. The cost of the sorbent is estimated to be less than $7.00/lb. This sorbent was developed using the results of in situ infrared spectroscopic study. Infrared results showed that CO{sub 2} adsorbs on TEPA (tetraethylenepentamine)/PEG (polyethylene glycol) as carbamates and bicarbonates. The CO{sub 2} adsorption capacity and oxidation resistance of the amine sorbent can be enhanced by the interactions between NH{sub 2} of TEPA molecules with the OH group of PEG molecules. PEG was also found to be effectively disperse and immobilize the aromatic amines for SO{sub 2} adsorption. The infrared study also showed that SiO{sub 2} is a significantly better support than zeolites due to its proper hydrophobicity. The results of this study led to the development of a high performance solid amine sorbent under simulated gas flow condition in a fixed bed, a fluidized bed, and a metal monolith unit. This study showed heat transfer could become a major technical issue in scaling up a fixed bed adsorber. The use of the fluidized bed and metal monoliths can alleviate the heat transfer issue. The metal monolith could be suitable for small scale applications due to the high cost of manufacturing; the fluidized bed mode would be most suitable for large scale applications. Preliminary economic analysis suggested that the Akron solid amine process would cost 45% less than that of MEA process.

Chuang, Steven

2011-03-31T23:59:59.000Z

146

Review of Test Methods for Stack Emissions of Amines and Degradation Products from Post-Combustion Carbon Capture Processes  

Science Conference Proceedings (OSTI)

Amine-based solvents have emerged as one technology for removing CO2 from post-combustion process streams. However, concern remains regarding the effects of emissions of the amine solvents and their degradation products on the environment and human health. This concern may eventually lead to emission regulations if amine-based post-combustion carbon capture (PCCC) is implemented on a large scale. While amine-based solvents are being considered for CO2 control, measurement methods that are capable of accu...

2012-06-21T23:59:59.000Z

147

Source Attribution of Light Absorbing Aerosol in Arctic Snow  

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

Source Attribution of Light Absorbing Source Attribution of Light Absorbing Aerosol in Arctic Snow (Preliminary analysis of 2008-2009 data) Outline * Receptor modeling overview * Results from 2007 data set * New goals arising from analysis of 2007 data * New data for 2008 * New data for 2009 * Tentative conclusions * Future analysis i Factor profiles from 2007 analysis Source attribution of Black Carbon from 2007 analysis Goals/Issues suggested by the analysis of the 2007 data set * Are there seasonal differences in the source strengths? * Are there other LAA chemical components besides black carbon. What are their sources? * Can the various data sets available (e.g., 2007, 2008, 2009) be combined in a single large PMF analysis 2008 Data Set For Receptor Analysis * 42 samples from Eastern Siberia including 4 depth profiles

148

A conceptual design of the 2+ MW LBNE beam absorber  

SciTech Connect

The Long Baseline Neutrino Experiment (LBNE) will utilize a neutrino beamline facility located at Fermilab. The facility will aim a beam of neutrinos, produced by 60-120 GeV protons from the Fermilab Main Injector, toward a detector placed at the Deep Underground Science and Engineering Laboratory (DUSEL) in South Dakota. Secondary particles that do not decay into muons and neutrinos as well as any residual proton beam must be stopped at the end of the decay region to reduce noise/damage in the downstream muon monitors and reduce activation in the surrounding rock. This goal is achieved by placing an absorber structure at the end of the decay region. The requirements and conceptual design of such an absorber, capable of operating at 2+ MW primary proton beam power, is described.

Velev, G.; Childress, S.; Hurh, P.; Hylen, J.; Makarov, A.; Mohkhov, N.; Moore, C.D.; Novitski, I.; /Fermilab

2011-03-01T23:59:59.000Z

149

Comparison of heat transfer in solar collectors with heat pipe versus flow through absorbers  

DOE Green Energy (OSTI)

Analysis of heat transfer in solar collectors with heat pipe absorbers is compared to that for collectors with flow through absorbers. Both pumped and thermosiphon systems that produce hot water or other heated fluids are discussed. In these applications the heat pipe absorber suffers a heat transfer penalty compared with the flow through absorber, but in many cases the penalty can be minimized by proper design at the heat pipe condenser and system manifold. When the solar collector is used to drive an absorption chiller, the heat pipe absorber has better heat transfer characteristics than the flow through absorber.

Hull, J.R.

1985-01-01T23:59:59.000Z

150

MHK Technologies/Oxygen Releasing and Carbon Absorbing Ocean Based  

Open Energy Info (EERE)

Releasing and Carbon Absorbing Ocean Based Releasing and Carbon Absorbing Ocean Based Renewable Energy System < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Oxygen Releasing and Carbon Absorbing Ocean Based Renewable Energy System.jpg Technology Profile Technology Description The benefits of the system developed and patented by AEEA are 1 exploitation of the greater wave energy density in the more remote off shore locations 2 usage of existing industrial fuel storage and distribution infrastructure 3 provision for a gradual transition to widespread electric vehicle use 4 avoidance of environmental destruction and visual impairment with minimal impact on commercial fishing and recreation uses 5 fostering the development of a new maritime and energy industry 6 avoidance of the high capital investment in mooring and anchoring seabed electrical cable installation and seabed restoration 7 development of flexibility by deployment of fleets of these vessels to supply widely separated market locations using coastal and national waterways and 8 provision for the addition of fleets without depletion of primary feed stocks as in nuclear energy systems 2 Fig 1 In summary the system converts wave energy from the nearly unlimited world wide

151

Absorbed dose measurements during routine equine radiographic procedures  

E-Print Network (OSTI)

This study was performed in order to determine absorbed doses from scattered radiation to personnel during routine equine radiographic procedures and to determine if the protective apparel adequately reduced exposure from scattered radiation. Absorbed doses were measured for one month at the Texas A&M University Veterinary Teaching Hospital using Li:Mg,Cu,P thermoluminescent dosimeters (TLDs). All personnel present in the x-ray examination room during eqine radiography were monitored using TLDs placed at: (1) the finger level; (2) the waist level; (3) the eye level; and (4) the forearm level. Absorbed doses ranged from 0.693 ligy to 31.3 tigy per study. The greatest doses were associated with the individual handling the cassette holder, although the individual making the exposures received similar doses due to improper techniques. The individual holding the horse's halter consistently received the lowest dose. Although all doses observed were within acceptable limits for occupational workers, results demonstrated the need for protective apparel to effectively reduce exposures.

Salinas, Leticia Lamar

1996-01-01T23:59:59.000Z

152

CO2 Capture with Liquid-to-Solid Absorbents: CO2 Capture Process Using Phase-Changing Absorbents  

SciTech Connect

IMPACCT Project: GE and the University of Pittsburgh are developing a unique CO2 capture process in which a liquid absorbent, upon contact with CO2, changes into a solid phase. Once in solid form, the material can be separated and the CO2 can be released for storage by heating. Upon heating, the absorbent returns to its liquid form, where it can be reused to capture more CO2. The approach is more efficient than other solventbased processes because it avoids the heating of extraneous solvents such as water. This ultimately leads to a lower cost of CO2 capture and will lower the additional cost to produce electricity for coal-fired power plants that retrofit their facilities to include this technology.

None

2010-10-01T23:59:59.000Z

153

Another Look at the Influence of Absorbing Aerosols in Drops on Cloud Absorption: Large Aerosols  

Science Conference Proceedings (OSTI)

Since as early as 1969, solar absorbing aerosols inside of cloud drops have been suggested to influence cloud radiative properties. The absorbing aerosols were invoked to help explain two “anomalies”: 1) the maximum visible albedo of thick ...

Carynelisa Erlick; Dana Schlesinger

2008-02-01T23:59:59.000Z

154

Unglazed transpired solar collector having a low thermal-conductance absorber  

DOE Patents (OSTI)

An unglazed transpired solar collector using solar radiation to heat incoming air for distribution, comprises an unglazed absorber formed of low thermal-conductance material having a front surface for receiving the solar radiation and openings in the unglazed absorber for passage of the incoming air such that the incoming air is heated as it passes towards the front surface of the absorber and the heated air passes through the openings in the absorber for distribution. 3 figs.

Christensen, C.B.; Kutscher, C.F.; Gawlik, K.M.

1997-12-02T23:59:59.000Z

155

Unglazed transpired solar collector having a low thermal-conductance absorber  

DOE Patents (OSTI)

An unglazed transpired solar collector using solar radiation to heat incoming air for distribution, comprising an unglazed absorber formed of low thermal-conductance material having a front surface for receiving the solar radiation and openings in the unglazed absorber for passage of the incoming air such that the incoming air is heated as it passes towards the front surface of the absorber and the heated air passes through the openings in the absorber for distribution.

Christensen, Craig B. (Boulder, CO); Kutscher, Charles F. (Golden, CO); Gawlik, Keith M. (Boulder, CO)

1997-01-01T23:59:59.000Z

156

Progress on the MICE Liquid Absorber Cooling and CryogenicDistribution System  

DOE Green Energy (OSTI)

This report describes the progress made on the design of the cryogenic cooling system for the liquid absorber for the international Muon Ionization Cooling Experiment (MICE). The absorber consists of a 20.7-liter vessel that contains liquid hydrogen (1.48 kg at 20.3 K) or liquid helium (2.59 kg at 4.2 K). The liquid cryogen vessel is located within the warm bore of the focusing magnet for the MICE. The purpose of the magnet is to provide a low beam beta region within the absorber. For safety reasons, the vacuum vessel for the hydrogen absorber is separated from the vacuum vessel for the superconducting magnet and the vacuum that surrounds the RF cavities or the detector. The absorber thin windows separate the liquid in the absorber from the absorber vacuum. The absorber vacuum vessel also has thin windows that separate the absorber vacuum space from adjacent vacuum spaces. Because the muon beam in MICE is of low intensity, there is no beam heating in the absorber. The absorber can use a single 4 K cooler to cool either liquid helium or liquid hydrogen within the absorber.

Green, M.A.; Baynham, E.; Bradshaw, T.; Drumm, P.; Ivanyushenkov,Y.; Ishimoto, S.; Cummings, M.A.C.; Lau, W.W.; Yang, S.Q.

2005-05-13T23:59:59.000Z

157

Thin Film Absorbers Based on Plasmonic Phase Resonances  

E-Print Network (OSTI)

We demonstrate an efficient double-layer light absorber by exciting plasmonic phase resonances. We show that the addition of grooves can cause mode splitting of the plasmonic waveguide cavity modes and all the new resonant modes exhibit large absorptivity greater than 90%. Some of the generated absorption peaks have wide-angle characteristics. Furthermore, we find that the proposed structure is fairly insensitive to the alignment error between different layers. The proposed plasmonic nano-structure designs may have exciting potential applications in thin film solar cells, thermal emitters, novel infrared detectors, and highly sensitive bio-sensors.

Cui, Yanxia; Xu, Jun; He, Sailing; Fang, Nicholas X

2010-01-01T23:59:59.000Z

158

Design Issues for the Superconducting Magnet that Goes Around the Liquid Hydrogen Absorber for the Muon Ionization Cooling Experiment (MICE)  

E-Print Network (OSTI)

the absorber body and pipes and the heat conduction down theheat transfer into the absorber to about 19 kW. The absorber vent pipeheat transfer into the liquid hydrogen to about 54 kW. The vent pipes

2004-01-01T23:59:59.000Z

159

30 IEEE power & energy magazine july/august 2004 by Massoud Amin  

E-Print Network (OSTI)

and societal progress depends on a reliable and efficient energy infrastructure; for instance, banking30 IEEE power & energy magazine july/august 2004 by Massoud Amin Balancing MarketPriorities with/august 2004 IEEE power & energy magazine 31 O OUR NATIONAL SECURITY AND DIGITAL ECONOMY PLACE INCREASED DEMAND

Amin, S. Massoud

160

Identification and Testing of Amines for Steam Generator Chemistry and Deposit Control, Part 2  

Science Conference Proceedings (OSTI)

This report summarizes a multi-year laboratory investigative program on optimization of water chemistry to reduce steam generator (SG) fouling. This work has demonstrated that surface chemistry significantly affects SG fouling. Furthermore, the investigation identified and demonstrated an amine additive that is a significant SG fouling inhibitor.

2003-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Design of a Transpired Air Heating Solar Collector with an Inverted Perforated Absorber and Asymmetric Compound Parabolic Concentrator.  

E-Print Network (OSTI)

?? absorber and an asymmetric compound parabolic concentrator was applied to increase the intensity of solar radiation incident on the perforated absorber. A 2D ray… (more)

Shams, Nasif

2013-01-01T23:59:59.000Z

162

Structure, Function, and Evolution of Biogenic Amine-binding Proteins in Soft Ticks  

Science Conference Proceedings (OSTI)

Two highly abundant lipocalins, monomine and monotonin, have been isolated from the salivary gland of the soft tick Argas monolakensis and shown to bind histamine and 5-hydroxytryptamine (5-HT), respectively. The crystal structures of monomine and a paralog of monotonin were determined in the presence of ligands to compare the determinants of ligand binding. Both the structures and binding measurements indicate that the proteins have a single binding site rather than the two sites previously described for the female-specific histamine-binding protein (FS-HBP), the histamine-binding lipocalin of the tick Rhipicephalus appendiculatus. The binding sites of monomine and monotonin are similar to the lower, low affinity site of FS-HBP. The interaction of the protein with the aliphatic amine group of the ligand is very similar for the all of the proteins, whereas specificity is determined by interactions with the aromatic portion of the ligand. Interestingly, protein interaction with the imidazole ring of histamine differs significantly between the low affinity binding site of FS-HBP and monomine, suggesting that histamine binding has evolved independently in the two lineages. From the conserved features of these proteins, a tick lipocalin biogenic amine-binding motif could be derived that was used to predict biogenic amine-binding function in other tick lipocalins. Heterologous expression of genes from salivary gland libraries led to the discovery of biogenic amine-binding proteins in soft (Ornithodoros) and hard (Ixodes) tick genera. The data generated were used to reconstruct the most probable evolutionary pathway for the evolution of biogenic amine-binding in tick lipocalins.

Mans, Ben J.; Ribeiro, Jose M.C.; Andersen, John F. (NIH)

2008-08-19T23:59:59.000Z

163

Design and Evaluation of Ionic Liquids as Novel Absorbents  

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

Design anD evaluation of ionic liquiDs Design anD evaluation of ionic liquiDs as novel absorbents Background There is growing concern among climate scientists that the buildup of greenhouse gases (GHG), particularly carbon dioxide (CO 2 ), in the atmosphere is affecting the global climate in ways that could have serious consequences. One approach to reducing GHG emissions is to scrub CO 2 from the flue gas of power plants and sequester it in geologic formations. Although it is technically feasible to remove CO 2 from flue gas, current processes are too expensive. New, less expensive processes are needed. This project is investigating the feasibility of using a novel class of compounds - ionic liquids - for the capture of CO 2 from the flue gas from coal and natural gas-fired power plants. The success of ionic liquids technology

164

Analysis of heat-pipe absorbers in evacuated-tube solar collectors  

SciTech Connect

Heat transfer in evacuated-tube solar collectors with heat-pipe absorbers is compared with that for similar collectors with flow-through absorbers. In systems that produce hot water or other heated fluids, the heat-pipe absorber suffers a heat transfer penalty compared with the flow-through absorber, but in many cases the penalty can be minimized by proper design at the heat-pipe condenser and system manifold. The heat transfer penalty decreases with decreasing collector heat loss coefficient, suggesting that evacuated tubes with optical concentration are more appropriate for use with heat pipes than evacuated or nonevacuated flat-plate collectors. When the solar collector is used to drive an absorption chiller, the heat-pipe absorber has better heat transfer characteristics than the flow-through absorbers.

Hull, J.R.; Schertz, W.W.; Allen, J.W.

1986-02-01T23:59:59.000Z

165

Report on the evaluation of the tritium producing burnable absorber rod lead test assembly. Revision 1  

Science Conference Proceedings (OSTI)

This report describes the design and fabrication requirements for a tritium-producing burnable absorber rod lead test assembly and evaluates the safety issues associated with tritium-producing burnable absorber rod irradiation on the operation of a commercial light water reactor. The report provides an evaluation of the tritium-producing burnable absorber rod design and concludes that irradiation can be performed within U.S. Nuclear Regulatory Commission regulations applicable to a commercial pressurized light water reactor.

NONE

1997-03-01T23:59:59.000Z

166

CuCoMnOx as a Functional Coating for Solar Absorbers Using Sol ...  

Science Conference Proceedings (OSTI)

Solar thermal heaters are used widely in domestic and industrial applications for heating water or generating electrical power through the use of solar absorber ...

167

Inhibition of Pitting and Crevice Corrosion by Filming Amines and Vapor Phase Corrosion Inhibitors  

Science Conference Proceedings (OSTI)

The increase of fossil units that are being removed from service for indeterminate periods due to economic dispatch, seasonal conditions of excess generating capacity, or temporary decommissioning of generating assets necessitates alternative protective measures to prevent and reduce deterioration of the system components during these periods of idle operation. Preservation methods and techniques using vapor phase corrosion inhibitors and film-forming hydrophobic amines may provide an effective alternati...

2012-01-17T23:59:59.000Z

168

The chemical mechanisms of flavin-dependent amine oxidases and the plasticity of the two-his one-carboxylate facial triad in tyrosine hydroxylase  

E-Print Network (OSTI)

Despite a number of kinetic and spectroscopic studies, the chemical mechanisms of amine oxidation by flavoenzymes remain widely debated. The mechanisms of by Nmethyltryptophan oxidase (MTOX) and tryptophan 2-monooxygenase (TMO) were probed using a combination of pH and primary deuterium, solvent, and 15N kinetic isotope effects. Slow substrates were chosen for these studies; MTOX was characterized with N-methylglycine and TMO was characterized with L-alanine. Primary deuterium kinetic isotope effects of 7.2 and 5.3 were observed for sarcosine oxidation by MTOX and for alanine oxidation by TMO, respectively, independent of the substrate concentration and pH. Monitoring the reduction of flavin spectroscopically revealed no intermediate flavin species with both enzyme-substrate systems. Furthermore, the magnitudes of the 15N kinetic isotope effects observed with both systems suggest that nitrogen rehybridization and C-H bond cleavage are concerted. These results are consistent with both enzymes utilizing a hydride transfer mechanism for amine oxidation. The role of the iron ligands of tyrosine hydroxylase (TyrH) was also investigated. TyrH contains one iron per monomer, which is held by three conserved amino acid residues, two histidines and a glutamate. As a probe of the plasticity of the metal binding site, each of the metal ligands in TyrH was substituted with glutamine, glutamate, or histidine. The resulting proteins were characterized for metal content, catalytic activity, and dopamine binding. The H336E and H336Q enzymes retain substantial catalytic activity. In contrast, the E376Q enzyme retains about 0.4% of the wild-type catalytic activity, and the E376H enzyme has no significant activity. The H331E enzyme oxidizes tetrahydropterin in a tyrosine-independent manner. The position of the charge-transfer absorbance band for the H336E and H336Q enzyme-inhibitor complexes is shifted relative to that of the wild-type enzyme, consistent with the change in the metal ligand. In contrast, the E376H and E376Q enzymes catalyze dopamine oxidation. These results provide a reference point for further structural studies of TyrH and the other aromatic amino acid hydroxylases, and for similar studies of other enzymes containing this ironbinding motif.

Ralph, Erik C.

2006-12-01T23:59:59.000Z

169

NETL - Slipstream Pilot-Scale Demonstration of a Novel Amine-Based  

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

Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Process Technology for CO2 Capture from Coal-Fired Power Plant Flue Gas Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Process Technology for CO2 Capture from Coal-Fired Power Plant Flue Gas Project No.: DE-FE0007453 Continuous mini test plant used for selecting the best performer of 70 different solvents. Continuous mini test plant used for selecting the best performer of 70 different solvents. Linde LLC is designing, constructing, and testing a pilot-scale (1 MWe), post-combustion carbon dioxide (CO2) capture plant using a novel amine-based solvent. Today, solvent based technologies are the leading option for post-combustion CO2 capture from large coal-fired power plants, as they have been applied in other applications on a large scale. However, a number of challenges exist in the use of traditionally available

170

Levelized cost of coating (LCOC) for selective absorber materials.  

SciTech Connect

A new metric has been developed to evaluate and compare selective absorber coatings for concentrating solar power applications. Previous metrics have typically considered the performance of the selective coating (i.e., solar absorptance and thermal emittance), but cost and durability were not considered. This report describes the development of the levelized cost of coating (LCOC), which is similar to the levelized cost of energy (LCOE) commonly used to evaluate alternative energy technologies. The LCOC is defined as the ratio of the annualized cost of the coating (and associated costs such as labor and number of heliostats required) to the average annual thermal energy produced by the receiver. The baseline LCOC using Pyromark 2500 paint was found to be %240.055/MWht, and the distribution of LCOC values relative to this baseline were determined in a probabilistic analysis to range from -%241.6/MWht to %247.3/MWht, accounting for the cost of additional (or fewer) heliostats required to yield the same baseline average annual thermal energy produced by the receiver. A stepwise multiple rank regression analysis showed that the initial solar absorptance was the most significant parameter impacting the LCOC, followed by thermal emittance, degradation rate, reapplication interval, and downtime during reapplication.

Ho, Clifford Kuofei; Pacheco, James Edward

2013-09-01T23:59:59.000Z

171

Properties of warm absorbers in active galaxies: a systematic stability curve analysis  

E-Print Network (OSTI)

Signatures of warm absorbers are seen in soft X-ray spectra of about half of all Seyfert1 galaxies observed and in some quasars and blazars. We use the thermal equilibrium curve to study the influence of the shape of the ionizing continuum, density and the chemical composition of the absorbing gas on the existence and nature of the warm absorbers. We describe circumstances in which a stable warm absorber can exist as a multiphase medium or one with continuous variation in pressure. In particular we find the following results: i) the warm absorber exists only if the spectral index of the X-ray power-law ionizing continuum $\\alpha > 0.2$ and has a multiphase nature if $\\alpha \\sim 0.8$, which interestingly is the spectral index for most of the observed Seyfert 1 galaxies; ii) thermal and ionization states of highly dense warm absorbers are sensitive to their density if the ionizing continuum is sufficiently soft, i.e. dominated by the ultraviolet iii) absorbing gas with super-Solar metallicity is more likely to have a multiphase nature; iv) the nature of the warm absorber is significantly influenced by the absence of iron and associated elements which are produced in the later stages of star formation history in supernovae of type Ia.

Susmita Chakravorty; Ajit K. Kembhavi; Martin Elvis; Gary Ferland

2008-11-14T23:59:59.000Z

172

O3/UV synergistic aging of polyester polyurethane film modified by composite UV absorber  

Science Conference Proceedings (OSTI)

The pure polyester polyurethane (TPU) film and the modified TPU (M-TPU) film containing 2.0 wt.% inorganic UV absorbers mixture (nano-ZnO/CeO2 with weight ratio of 3 : 2) and 0.5 wt.% organic UV absorbers mixture (UV-531/UV-327 with weight ...

Yanzhi Wang, Haiyan Wang, Xuesong Li, Dongxu Liu, Yifan Jiang, Zonghui Sun

2013-01-01T23:59:59.000Z

173

Absorbing Aerosols and Summer Monsoon Evolution over South Asia: An Observational Portrayal  

Science Conference Proceedings (OSTI)

The South Asian haze builds up from December to May, is mostly of anthropogenic origin, and absorbs part of the solar radiation. The influence of interannual variations of absorbing aerosols over the Indo-Gangetic Plain in May on the Indian ...

Massimo Bollasina; Sumant Nigam; K-M. Lau

2008-07-01T23:59:59.000Z

174

A Study of Heat Transfer in a Composite Wall Collector System with Porous Absorber  

E-Print Network (OSTI)

In this paper, heat transfer and flow in a composite solar wall with porous absorber has been studied. The unsteady numerical simulation is employed to analyze the performance of the flow and temperature field in the composite solar wall. The excess heat is stored in the porous absorber and wall by the incident solar radiation and there is a temperature gradient in the porous layer. Therefore, the porous absorber works as thermal insulator in a degree when no solar shining is available. The influence of the porosity within the porous absorber on the air flow in the porous absorber is significant. The results show that all these factors should be taken into account for a better design of a heating system.

Chen, W.

2006-01-01T23:59:59.000Z

175

On the parallelization of the acoustic wave equation with absorbing boundary conditions  

SciTech Connect

Many practical problems involve wave propagation through atmosphere, oceans, or terrestrial crust. Modeling and analysis of these problems is usually done in (semi)infinite domains, but numerical calculations obviously impose restriction to finite domains. To mimic the actual behavior in the (semi)infinite medium, artificial absorbing boundary conditions are imposed at the boundaries, whereby waves can only exit, but not enter the finite computational domain. Efficient absorbing boundary conditions are difficult to analyze and costly to run. In particular, it is of interest to assess whether the wave equation with (approximate or exact) absorbing boundary conditions admits a suitable diagonalization. This would open the possibility for parallelizing many important numerical codes used in applications. In this paper the authors propose a set of stable, local, absorbing boundary conditions for the discrete acoustic wave equation. They show that the acoustic wave equation with absorbing boundary conditions cannot be exactly diagonalized.

White, C.T. [California Inst. of Tech., Pasadena, CA (United States). Dept. of Mathematics; Protopopescu, V.A.; Barhen, J. [Oak Ridge National Lab., TN (United States). Center for Engineering Systems Advanced Research

1998-07-01T23:59:59.000Z

176

21-PWR WASTE PACKAGE WITH ABSORBER PLATES LOADING CURVE EVALUATION  

Science Conference Proceedings (OSTI)

The objective of this calculation is to evaluate the required minimum burnup as a function of initial pressurized water reactor (PWR) assembly enrichment that would permit loading of spent nuclear fuel into the 21 PWR waste package with absorber plates design as provided in Attachment IV. This calculation is an example of the application of the methodology presented in the ''Disposal Criticality Analysis Methodology Topical Report'' (YMP 2003). The scope of this calculation covers a range of enrichments from 0 through 5.0 weight percent U-235, and a burnup range of 0 through 45 GWd/MTU. Higher burnups were not necessary because 45 GWd/MTU was high enough for the loading curve determination. This activity supports the validation of the use of burnup credit for commercial spent nuclear fuel applications. The intended use of these results will be in establishing PWR waste package configuration loading specifications. Limitations of this evaluation are as follows: (1) The results are based on burnup credit for actinides and selected fission products as proposed in YMP (2003, Table 3-1) and referred to as the ''Principal Isotopes''. Any change to the isotope listing will have a direct impact on the results of this report. (2) The results are based on 1.5 wt% Gd in the Ni-Gd Alloy material and having no tuff inside the waste package. If the Gd loading is reduced or a process to introduce tuff inside the waste package is defined, then this report would need to be reevaluated based on the alternative materials. This calculation is subject to the ''Quality Assurance Requirements and Description'' (QARD) (DOE 2004) because it concerns engineered barriers that are included in the ''Q-List'' (BSC 2004k, Appendix A) as items important to safety and waste isolation.

J.M. Scaglione

2004-12-17T23:59:59.000Z

177

The Role of Pendant Amines in the Breaking and Forming of Molecular Hydrogen Catalyzed by Nickel Complexes  

Science Conference Proceedings (OSTI)

We present the results of a comprehensive theoretical investigation of the role of pendant amine ligands in the oxidation of H2 and formation of H2 by [Ni(P2RN2R’)2]2+ electrocatalysts (where P2RN2R’ is the 1,5-R’-3,7-R derivative of 1,5-diaza-3,7-diphosphacyclooctane with R and R’ are aryl or alkyl groups). We focus our analysis on the thermolchemical part of the catalytic cycle, as it is known to be rate determining for both H2 oxidation and production. We find that the presence of pendant amine functional groups greatly facilitates the heterolytic H2 bond cleavage resulting in a protonated amine functional group and a Ni hydride. Only one single well-positioned pendant amine is required to serve this function. The pendant amine can also effectively shuttle protons to the active site making the redistribution of protons and the H2 evolution a very facile processes. An important requirement for the overall catalytic process is the positioning of at least one amine in close proximity to the metal center. Indeed, only protonation of the pendant amines on the metal center side (endo position) leads to catalytically active intermediates, whereas protonation on the opposite side of the metal center (exo position) leads to a variety of isomers, which are detrimental to catalysis. This material is based upon work supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under FWP56073.

Raugei, Simone; Chen, Shentan; Ho, Ming-Hsun; Ginovska-Pangovska, Bojana; Rousseau, Roger J.; Dupuis, Michel; DuBois, Daniel L.; Bullock, R. Morris

2012-05-15T23:59:59.000Z

178

Parasitic oscillation suppression in solid state lasers using absorbing thin films  

DOE Patents (OSTI)

A thin absorbing film is bonded onto at least certain surfaces of a solid state laser gain medium. An absorbing metal-dielectric multilayer film is optimized for a broad range of incidence angles, and is resistant to the corrosive/erosive effects of a coolant such as water, used in the forced convection cooling of the film. Parasitic oscillations hamper the operation of solid state lasers by causing the decay of stored energy to amplified rays trapped within the gain medium by total and partial internal reflections off the gain medium facets. Zigzag lasers intended for high average power operation require the ASE absorber. 16 figs.

Zapata, L.E.

1994-08-02T23:59:59.000Z

179

Reducing heat loss from the energy absorber of a solar collector  

DOE Patents (OSTI)

A device is provided for reducing convective heat loss in a cylindrical radiant energy collector. It includes a curved reflective wall in the shape of the arc of a circle positioned on the opposite side of the exit aperture from the reflective side walls of the collector. Radiant energy exiting the exit aperture is directed by the curved wall onto an energy absorber such that the portion of the absorber upon which the energy is directed faces downward to reduce convective heat loss from the absorber.

Chao, Bei Tse (Urbana, IL); Rabl, Ari (Downers Grove, IL)

1976-01-01T23:59:59.000Z

180

Amine Lambarqui  

Science Conference Proceedings (OSTI)

Academic Institution: University of District of Columbia Major: chemistry Academic Standing as ... and, in the process, energy in the form of heat is lost ...

2010-10-05T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Plasma Semicarbazide-Sensitive Amine Oxidase Activity in Type I and II Alcoholics  

E-Print Network (OSTI)

Semicarbazide-sensitive amine oxidase (SSAO) which catalysis the deamination of primary amines is involved in vascular endothelial or tissue damage through the formation of reactive aldehydes, hydrogen peroxide and ammonia from endogenous substrates. In the present study, plasma SSAO activity, plasma and erythrocyte lipid peroxidation status, glutathione levels and the correlation between the plasma SSAO activity and lipid peroxidation were determined to clarify the mechanism of liver injury related to the oxidative stress in early- and late-onset (Type I and II) alcoholic subtypes. Plasma SSAO activity and, plasma and erythrocyte malondialdehyde (MDA) levels as the indicators of lipid peroxidation status of alcoholics were found to be significantly higher than those of the control group. Increased plasma SSAO activity was strongly correlated with the elevated plasma and erythrocyte MDA levels and decreased reduced/oxidized glutathione (GSH/GSSG) ratio in alcoholics suggesting that enhanced plasma SSAO activity might contribute to the production of reactive oxygen species (ROS) detected in the liver of the alcoholics.

Gülberk Uçar; Ba?aran Demir; Yaz??ma Adresi

2003-01-01T23:59:59.000Z

182

Influence of Absorbing Aerosols on the Inference of Solar Surface Radiation Budget and Cloud Absorption  

Science Conference Proceedings (OSTI)

This study addresses the impact of absorbing aerosols on the retrieval of the solar surface radiation budget (SSRB) and on the inference of cloud absorption using multiple global datasets. The data pertain to the radiation budgets at the top of ...

Zhanqing Li

1998-01-01T23:59:59.000Z

183

A New Parameterization for the Determination of Solar Flux Absorbed at the Surface from Satellite Measurements  

Science Conference Proceedings (OSTI)

An earlier parameterization that relates the outgoing solar flux at the top of the atmosphere to the flux absorbed at the surface is modified and extended to allow for variations in atmospheric properties that were not considered in the original ...

Kazuhiko Masuda; H. G. Leighton; Zhanqing Li

1995-06-01T23:59:59.000Z

184

Study on the Humidity Susceptibility of Thin-Film CIGS Absorber  

SciTech Connect

The report summarizes the research on the susceptibility of a thermally co-evaporated CuInGaSe2 (CIGS) thin-film absorber to humidity and its consequence on composition, morphology, electrical and electronic properties, and device efficiency.

Pern, F. J.; Egaas, B.; To, B.; Jiang, C. S.; Li, J. V.; Glynn, S.; DeHart, C.

2010-01-01T23:59:59.000Z

185

Progress on the MICE Liquid Absorber Cooling and Cryogenic Distribution System  

E-Print Network (OSTI)

The condenser in the surge tank must not be covered byK determines the surge volume of the condenser-surge tank.the buffer volume and condenser, the absorber vacuum, the

2005-01-01T23:59:59.000Z

186

Equations for Estimating the Similarity Parameter from Radiation Measurements within Weakly Absorbing Optically Thick Clouds  

Science Conference Proceedings (OSTI)

Series expansions are derived for estimating the similarity parameter, which is a combination of the single-scattering albedo and asymmetry factor, from radiance measurement deep in the interior of a weary absorbing cloud. One expansion requires ...

T. Duracz; N. J. McCormick

1986-03-01T23:59:59.000Z

187

Handbook of Neutron Absorber Materials for Spent Nuclear Fuel Transportation and Storage Applications  

Science Conference Proceedings (OSTI)

This handbook is intended to become a single source of information regarding technical characteristics of neutron absorber materials that have been used for storage and transportation of spent nuclear fuel as well as to provide a summary of users' experience. The second edition of this handbook was published in 2006. This third edition, the 2009 Edition, updates materials covered in the 2006 Edition, presents new products introduced since 2006, and reflects recent realignments of neutron absorber suppliers.

2009-11-25T23:59:59.000Z

188

Evaluation of the absorption capacity of various absorbers by reversed-phase chromatography  

Science Conference Proceedings (OSTI)

An investigation of the separation of alkanes, alkenes, and cycloalkanes from benzene in coke oven gas was presented. The absorption index was determined for benzene and n-octane as a function of temperature in methylnaphthalene, coal oil, solar oil, polyalkylbenzenes, tetraline, and 1,7-dimethylnaphthalene by gas chromatography. It was concluded that the best absorbers for the recovery of benzene were tetraline and coal oil. The most efficient absorber present in wash oil was methylnaphthalene. (JMT)

Mariich, L.I.; Ambrozevich, F.N.; Platonova, L.L.

1982-01-01T23:59:59.000Z

189

Dielectric compound parabolic concentrating solar collector with a frustrated total internal reflection absorber  

SciTech Connect

Coupling a dielectric compound parabolic concentrator (DCPC) to an absorber across a vacuum gap by means of frustrated total internal reflection (FTIR) can theoretically approach the maximum concentration permitted by physical laws, thus allowing higher radiative fluxes in thermal applications. The calculated optical performance of 2-D DCPCs with FTIR absorbers indicates that the ratio of gap thickness to optical wavelength must be /0.22 before the optical performance of the DCPC is superior to that of the nondielectric CPC.

Hull, J.R.

1989-01-01T23:59:59.000Z

190

Six-dimensional muon beam cooling in a continuous, homogeneous, gaseous hydrogen absorber  

DOE Green Energy (OSTI)

The fast reduction of the six-dimensional phase space of muon beams is required for muon colliders and is also of great importance for neutrino factories based on accelerated muon beams. Ionization cooling, where all momentum components are degraded by an energy absorbing material and only the longitudinal momentum is restored by RF cavities, provides a means to quickly reduce transverse beam sizes. However, the beam momentum spread cannot be reduced by this method unless the longitudinal emittance can be transformed or exchanged into the transverse emittance. The best emittance exchange plans up to now have been accomplished by using magnets to disperse the beam along the face of a wedge-shaped absorber such that higher momentum particles pass through thicker parts of the absorber and thus suffer larger ionization energy loss. In the scheme advocated in this paper, it is noted that one can generate a magnetic channel filled with absorber where higher momentum corresponds to a longer path length and therefore larger ionization energy loss. Thus a homogeneous absorber, without any special edge shaping, can provide the desired emittance exchange. An attractive example of a cooling channel based on this principle involves the use of RF cavities filled with a continuous gaseous hydrogen absorber in a magnetic channel composed of a solenoidal field with superimposed helical transverse dipole, quadrupole, and octupole fields. The theory of this helical channel is described to support the analytical prediction of a million-fold reduction in phase space volume in a channel 150 m long.

Yaroslav Derbenev; Rolland P. Johnson

2004-10-01T23:59:59.000Z

191

The intergration of liquid and solid muon absorbers into afocusing magnet of a muon cooling channel  

DOE Green Energy (OSTI)

This report describes how one can integrate the muonabsorber with the focusing coils of a SFOFO muon cooling channel [1]. Theabsorber material must be a low Z material that reduces the muon momentumwith minimum scattering. The best materials to use for muon ionizationcooling absorbers are hydrogen, helium, lithium hydride, lithium, andberyllium. Hydrogen or helium in an absorber would normally be in theliquid state. Lithium hydride, lithium, and beryllium would normally bein the solid state. This report limits the absorber materials discussedto hydrogen, helium, lithium, and beryllium. In order to achieve the samelevel of ionization cooling with a solid absorber as a liquid hydrogenabsorber, the beta of the muon beam must be reduced more than a factor oftwo. This affects both the designs of the absorber and the magnet aroundit. Reducing the beam beta reduces the momentum acceptance of thechannel. Integration of a liquid hydrogen absorber and solid absorberswith a superconducting focusing solenoid is discussed. The choice ofabsorber material affects the design of the superconducting focusingmagnet and the superconductor that is used to generate the magneticfield.

Green, M.A.; Black, E.L.; Cummings, M.A.; Kaplan, D.M.; Ishimoto,S.; Cobb, J.H.; Lau, W.; Yang, S.; Palmer, R.B.

2003-05-01T23:59:59.000Z

192

RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber: Preprint  

DOE Green Energy (OSTI)

A preliminary study on a two-body floating wave absorbers is presented in this paper. A Reynolds-Averaged Navier-Stokes computational method is applied for analyzing the hydrodynamic heave response of the absorber in operational wave conditions. The two-body floating wave absorber contains a float section and a submerged reaction section. For validation purposes, our model is first assumed to be locked. The two sections are forced to move together with each other. The locked single body model is used in a heave decay test, where the RANS result is validated with the experimental measurement. For the two-body floating point absorber simulation, the two sections are connected through a mass-spring-damper system, which is applied to simulate the power take-off mechanism under design wave conditions. Overall, the details of the flow around the absorber and its nonlinear interaction with waves are investigated, and the power absorption efficiency of the two-body floating wave absorber in waves with a constant value spring-damper system is examined.

Yu, Y.; Li, Y.

2011-03-01T23:59:59.000Z

193

Distributions of 12 elements on 64 absorbers from simulated Hanford Neutralized Current Acid Waste (NCAW)  

SciTech Connect

As part of the Hanford Tank Waste Remediation System program at Los Alamos, we evaluated 64 commercially available or experimental absorber materials for their ability to remove hazardous components from high-level waste. These absorbers included cation and anion exchange resins, inorganic exchangers, composite absorbers, and a series of liquid extractants sorbed on porous support-beads. We tested these absorbers with a solution that simulates Hanford neutralized current acid waste (NCAW) (pH 14.2). To this simulant solution we added the appropriate radionuclides and used gamma spectrometry to measure fission products (Cs, Sr, Tc, and Y) and matrix elements (Cr, Co, Fe, Mn, Ni, V, Zn, and Zr). For each of 768 element/absorber combinations, we measured distribution coefficients for dynamic contact periods of 30 min, 2 h, and 6 h to obtain information about sorption kinetics. On the basis of these 2304 measured distribution coefficients, we determined that many of the tested absorbers may be suitable for processing NCAW solutions.

Svitra, Z.V.; Bowen, S.M. [Los Alamos National Lab., NM (United States); Marsh, S.F. [Sandia National Labs., Albuquerque, NM (United States)

1994-12-01T23:59:59.000Z

194

Distributions of 15 elements on 58 absorbers from simulated Hanford Double-Shell Slurry Feed (DSSF)  

SciTech Connect

As part of the Hanford Tank Waste Remediation System program at Los Alamos, we evaluated 58 commercially available or experimental absorber materials for their ability to remove hazardous components from high-level waste. These absorbers included cation and anion exchange resins, inorganic exchangers, composite absorbers, pillared layered materials, and a series of liquid extractants sorbed on porous support-beads. We tested these absorbers with a solution that simulates Hanford double-shell slurry feed (DSSF) (pH 14.0). To this simulant solution we added the appropriate radionuclides and used gamma spectrometry to measure fission products (Ce, Cs, Sr, Tc, and Y), actinides (U and Am), and matrix elements (Cr, Co, Fe, Mn, Ni, V, Zn, and Zr). For each of 870 element/absorber combinations, we measured distribution coefficients for dynamic contact periods of 30 min, 2 h, and 6 h to obtain information about sorption kinetics. On the basis of these 2610 measured distribution coefficients, we determined that many of the tested absorbers may be suitable for processing DSSF solutions.

Marsh, S.F. [Sandia National Labs., Albuquerque, NM (United States); Svitra, Z.V.; Bowen, S.M. [Los Alamos National Lab., NM (United States)

1994-11-01T23:59:59.000Z

195

Does One Know the Properties of a MICE Solid or Liquid Absorber toBetter than 0.3 Percent?  

DOE Green Energy (OSTI)

This report discusses the report discusses whether the MICE absorbers can be characterized to {+-}0.3 percent, so that one predict absorber ionization cooling within the absorber. This report shows that most solid absorbers can be characterized to much better than {+-}0.3 percent. The two issues that dominate the characterization of the liquid cryogen absorbers are the dimensions of the liquid in the vessel and the density of the cryogenic liquid. The thickness of the window also plays a role. This report will show that a liquid hydrogen absorber can be characterized to better than {+-}0.3 percent, but a liquid helium absorber cannot be characterized to better and {+-}1 percent.

Green, Michael A.; Yang, Stephanie Q.

2006-02-20T23:59:59.000Z

196

3D Underwater Sensor Network Localization Amin Y. Teymorian, Student Member, IEEE, Wei Cheng, Student Member, IEEE,  

E-Print Network (OSTI)

3D Underwater Sensor Network Localization Amin Y. Teymorian, Student Member, IEEE, Wei Cheng, and Zexin Lu, Member, IEEE Abstract--We transform the 3D underwater sensor network (USN) localization termed as Underwater Sensor Positioning (USP). Through extensive simulations, we show that USP has

Cheng, Xiuzhen "Susan"

197

Extraction of Ce(III), Gd(III) and Yb(III) from citrate medium by high molecular weight amines  

SciTech Connect

High molecular weight amines have been used for the extraction of citrate complexes of Ce(III), Gd(III) and Yb(III). The effect of different variables on extraction has been studied. The citrate species extracted in the organic phase have been proposed as ((RNH/sub 3//sup +/)/sub 3/) (M(Cit)/sub 2/)/sup 3 -/.

Jain, A.; Singh, O.V.; Tandon, S.N.

1988-10-01T23:59:59.000Z

198

Molecular Electrocatalysts for the Oxidation of Hydrogen and the Production of Hydrogen - The Role of Pendant Amines as Proton Relays  

DOE Green Energy (OSTI)

Electrocatalysts for efficient conversion between electricity and chemical bonds will play a vital role in future systems for storage and delivery of energy. Our research on functional models of hydrogenase enzymes uses nickel and cobalt, abundant and inexpensive metals, in contrast to platinum, a precious metal used in fuel cells. A key feature of our research is a focus on the use of pendant amines incorporated into diphosphine ligands. These pendant amines function as proton relays, lowering the barrier to proton transfers to and from the catalytically active metal site. The hydride acceptor ability of metal cations, along with the basicity of pendant amines, are key thermochemical values that determine the thermodynamics of addition of H2 to a metal complex with a pendant amine incorporated into its ligand. Nickel catalysts for oxidation of H2 have turnover frequencies up to 50 s-1 (at 1 atm H2 and room temperature). Nickel and cobalt catalysts for production of H2 by reduction of protons are studied, one of which has a turnover frequency over 1000 s-1. This material is based upon work supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences.

DuBois, Daniel L.; Bullock, R. Morris

2011-03-15T23:59:59.000Z

199

Hydrogen Oxidation Catalysis by a Nickel Diphosphine Complex with Pendant tert-Butyl Amines  

DOE Green Energy (OSTI)

A bis-diphosphine nickel complex with t-butyl functionalized pendant amines [Ni(PCy2Nt-Bu2)2]2+ has been synthesized. It is a highly active electrocatalyst for the oxidation of hydrogen in the presence of base. The turn-over rate of 50 s 1 under 1.0 atm H2 at a potential of –0.77 V vs the ferrocene couple is 5 times faster than the rate reported heretofore for any other molecular H2 oxidation catalyst. This research was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy. Computational resources were provided by the Environmental Molecular Science Laboratory (EMSL) and the National Energy Research Scientific Computing Center (NERSC) at Lawrence Berkeley National Laboratory.

Yang, Jenny Y.; Chen, Shentan; Dougherty, William G.; Kassel, W. S.; Bullock, R. Morris; DuBois, Daniel L.; Raugei, Simone; Rousseau, Roger J.; Dupuis, Michel; Rakowski DuBois, Mary

2010-11-09T23:59:59.000Z

200

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

16, 2010 16, 2010 CX-003449: Categorical Exclusion Determination Energy Efficiency through Clean Combined Heat and Power (CHP) CX(s) Applied: A9, A11, B1.24, B2.2, B5.1 Date: 08/16/2010 Location(s): New Jersey Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory August 16, 2010 CX-003448: Categorical Exclusion Determination Curriculum for Commissioning Energy Efficient Buildings CX(s) Applied: A1, A11 Date: 08/16/2010 Location(s): Portland, Oregon Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory August 16, 2010 CX-003443: Categorical Exclusion Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: A9, A11, A14

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Categorical Exclusion Determinations: A11 | Department of Energy  

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

16, 2010 16, 2010 CX-003449: Categorical Exclusion Determination Energy Efficiency through Clean Combined Heat and Power (CHP) CX(s) Applied: A9, A11, B1.24, B2.2, B5.1 Date: 08/16/2010 Location(s): New Jersey Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory August 16, 2010 CX-003448: Categorical Exclusion Determination Curriculum for Commissioning Energy Efficient Buildings CX(s) Applied: A1, A11 Date: 08/16/2010 Location(s): Portland, Oregon Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory August 16, 2010 CX-003443: Categorical Exclusion Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: A9, A11, A14

202

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

December 5, 2011 December 5, 2011 CX-007500: Categorical Exclusion Determination Carbon Absorber Retrofit Equipment (CARE) CX(s) Applied: B3.6 Date: 12/05/2011 Location(s): Colorado Offices(s): National Energy Technology Laboratory October 19, 2011 CX-007063: Categorical Exclusion Determination Geothermal Incentive Program CX(s) Applied: A1, A9, B5.1 Date: 10/19/2011 Location(s): Windsor, Connecticut Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory October 18, 2011 CX-007065: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 10/18/2011 Location(s): Wilsonville, Alabama Office(s): Fossil Energy, National Energy Technology Laboratory

203

Categorical Exclusion Determinations: California | Department of Energy  

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

August 16, 2010 August 16, 2010 CX-003443: Categorical Exclusion Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: A9, A11, A14 Date: 08/16/2010 Location(s): San Francisco, California Office(s): Fossil Energy, National Energy Technology Laboratory August 14, 2010 CX-004959: Categorical Exclusion Determination Primus Power -Low Cost, High Performance, 50-Year Electrodes CX(s) Applied: B3.6 Date: 08/14/2010 Location(s): Alameda, California Office(s): Advanced Research Projects Agency - Energy August 14, 2010 CX-004941: Categorical Exclusion Determination Makani Power, Inc. - Advanced Wind Turbine CX(s) Applied: B3.6 Date: 08/14/2010 Location(s): Alameda, California Office(s): Advanced Research Projects Agency - Energy

204

Fast-regenerable sulfur dioxide absorbents for lean-burn diesel engine emission control  

SciTech Connect

It is known that sulfur oxides contribute significantly and deleteriously to the overall performance of lean-burn diesel engine aftertreatment systems, especially in the case of NOx traps. A Ag-based, fast regenerable SO2 absorbent has been developed and will be described. Over a temperature range of 300oC to 550oC, it absorbs almost all of the SO2 in the simulated exhaust gases during the lean cycles and can be fully regenerated by the short rich cycles at the same temperature. Its composition has been optimized as 1 wt% Pt-5wt%Ag-SiO2, and the preferred silica source for the supporting material has been identified as inert Cabosil fumed silica. The thermal instability of Ag2O under fuel-lean conditions at 230oC and above makes it possible to fast regenerate the sulfur-loaded absorbent during the following fuel-rich cycles. Pt catalyst helps reducing Ag2SO4 during rich cycles at low temperatures. And the chemically inert fumed SiO2 support gives the absorbent long term stability. This absorbent shows great potential to work under the same lean-rich cycling conditions as those imposed on the NOx traps, and thus, can protect the downstream particulate filter and the NOx trap from sulfur poisoning.

Li, Liyu; King, David L.

2010-01-23T23:59:59.000Z

205

The Development of 6061-Aluminum Windows for the MICE LiquidAbsorber  

SciTech Connect

The thin windows for the Muon Ionization Cooling Experiment (MICE) liquid Absorber will be fabricated from 6061-T6-aluminum. The absorber and vacuum vessel thin windows are 300-mm in diameter and are 180 mm thick at the center. The windows are designed for an internal burst pressure of 0.68 MPa (100 psig) when warm. The MICE experiment design calls for changeable windows on the absorber, so a bolted window design was adopted. Welded windows offer some potential advantages over bolted windows when they are on the absorber itself. This report describes the bolted window and its seal. This report also describes an alternate window that is welded directly to the absorber body. The welded window design presented permits the weld to be ground off and re-welded. This report presents a thermal FEA analysis of the window seal-weld, while the window is being welded. Finally, the results of a test of a welded-window are presented.

Lau, W.; Yang, S.Q.; Green, M.A.; Ishimoto, S.; Swanson, J.

2005-08-24T23:59:59.000Z

206

Understanding How Semiconductors Absorb Light | U.S. DOE Office of Science  

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

How Semiconductors Absorb Light How Semiconductors Absorb Light Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Science Highlights Benefits of ASCR Funding Opportunities Advanced Scientific Computing Advisory Committee (ASCAC) News & Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301) 903-4846 E: sc.ascr@science.doe.gov More Information » March 2013 Understanding How Semiconductors Absorb Light Advances in how we calculate optical properties of semiconductors shorten the path to improved solar cells and other optoelectronic devices. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo

207

Double absorber plate. Final technical report, October 1, 1977-November 15, 1978  

DOE Green Energy (OSTI)

An air collector is described that avoids the high air side pressure drops and the use of inlet and outlet header ducts to connect collectors in parallel. The precontract collector design is shown. The major novelty of the collector rests in having two absorber plates which heat a relatively broad air passage. The current collector utilizes a 4 mil fiberglass reinforced plastic sheet (Kalwall) outer glazing, a 1 mil fluorocarbon (Teflon) inner anticonvection layer/inner glazing, a partially blackened (50%) absorbing 4 mil fiberglass reinforced plastic sheet (Kalwall) and a flat black aluminum inner absorber backed by a 1 1/2 inch thickness of fiberglass insulation. Performance testing of the collector is reported. (MHR)

Berman, E.

1978-11-01T23:59:59.000Z

208

Synthesis of Numerical Methods for Modeling Wave Energy Converter-Point Absorbers: Preprint  

DOE Green Energy (OSTI)

During the past few decades, wave energy has received significant attention among all ocean energy formats. Industry has proposed hundreds of prototypes such as an oscillating water column, a point absorber, an overtopping system, and a bottom-hinged system. In particular, many researchers have focused on modeling the floating-point absorber as the technology to extract wave energy. Several modeling methods have been used such as the analytical method, the boundary-integral equation method, the Navier-Stokes equations method, and the empirical method. However, no standardized method has been decided. To assist the development of wave energy conversion technologies, this report reviews the methods for modeling the floating-point absorber.

Li, Y.; Yu, Y. H.

2012-05-01T23:59:59.000Z

209

Photocurable acrylic composition, and U.V. curing with development of U.V. absorber  

DOE Patents (OSTI)

In-situ development of an ultraviolet absorber is provided by a compound such as a hydroxy-phenyl-triazole containing a group which protects the absorber during actinically activated polymerization by light at first frequency. After polymerization the protective group is removed by actinic reaction at a second frequency lower than the first frequency. The protective group is formed by replacing the hydrogen of the hydroxyl group with an acyl group containing 1 to 3 carbon atoms or an acryloxy group of the formula: ##STR1## where R.sup.1 is either an alkyl containing 1 to 6 carbon atoms or --CH.dbd.CH.sub.2.

McKoy, Vincent B. (Flintridge, CA); Gupta, Amitava (Pasadena, CA)

1992-01-01T23:59:59.000Z

210

Preliminary Results of a RANS Simulation for a Floating Point Absorber Wave Energy System Under Extreme Wave Conditions  

SciTech Connect

This paper presents the results of a preliminary study on the hydrodynamics of a moored floating-point absorber (FPA) wave energy system under extreme wave conditions.

Yu, Y.; Li, Y.

2011-10-01T23:59:59.000Z

211

Use of Spray Dryer Absorber Product in Agriculture – Sulfite Oxidation Kinetics  

Science Conference Proceedings (OSTI)

A laboratory study evaluated the rate of sulfite oxidation and the chemical quality of water extracts when spray dryer absorber (SDA) material was added to soil at rates of 0, 100, 1000, 5000, and 10,000 lb acre-1.* Water was then added to the soil on 10 occasions beginning at day 0 and ending at day 98 after the addition of ...

2013-08-29T23:59:59.000Z

212

Carbon dioxide absorber and regeneration assemblies useful for power plant flue gas  

DOE Patents (OSTI)

Disclosed are apparatus and method to treat large amounts of flue gas from a pulverized coal combustion power plant. The flue gas is contacted with solid sorbents to selectively absorb CO.sub.2, which is then released as a nearly pure CO.sub.2 gas stream upon regeneration at higher temperature. The method is capable of handling the necessary sorbent circulation rates of tens of millions of lbs/hr to separate CO.sub.2 from a power plant's flue gas stream. Because pressurizing large amounts of flue gas is cost prohibitive, the method of this invention minimizes the overall pressure drop in the absorption section to less than 25 inches of water column. The internal circulation of sorbent within the absorber assembly in the proposed method not only minimizes temperature increases in the absorber to less than 25.degree. F., but also increases the CO.sub.2 concentration in the sorbent to near saturation levels. Saturating the sorbent with CO.sub.2 in the absorber section minimizes the heat energy needed for sorbent regeneration. The commercial embodiments of the proposed method can be optimized for sorbents with slower or faster absorption kinetics, low or high heat release rates, low or high saturation capacities and slower or faster regeneration kinetics.

Vimalchand, Pannalal; Liu, Guohai; Peng, Wan Wang

2012-11-06T23:59:59.000Z

213

Roof Integrated Solar Absorbers: The Measured Performance of ''Invisible'' Solar Collectors: Preprint  

DOE Green Energy (OSTI)

The Florida Solar Energy Center (FSEC), with the support of the National Renewable Energy Laboratory, has investigated the thermal performance of solar absorbers that are an integral, yet indistinguishable, part of a building's roof. The first roof-integrated solar absorber (RISA) system was retrofitted into FSEC's Flexible Roof Facility in Cocoa, Florida, in September 1998. This ''proof-of-concept'' system uses the asphalt shingle roof surface and the plywood decking under the shingles as an unglazed solar absorber. Data was gathered for a one-year period on the system performance. In Phase 2, two more RISA prototypes were constructed and submitted for testing. The first used the asphalt shingles on the roof surface with the tubing mounted on the underside of the plywood decking. The second prototype used metal roofing panels over a plywood substrate and placed the polymer tubing between the plywood decking and the metal roofing. This paper takes a first look at the thermal performance results for the ''invisible'' solar absorbers that use the actual roof surface of a building for solar heat collection.

Colon, C. J. (Florida Solar Energy Center); Merrigan, T. (National Renewable Energy Laboratory)

2001-10-19T23:59:59.000Z

214

Absorber and emitter for solar thermo-photovoltaic systems to achieve efficiency  

E-Print Network (OSTI)

Pbs photovoltaic cells," Int. J. Energy Res. 16(6), 481­487 (1992). 7. V. Badescu, "ThermodynamicAbsorber and emitter for solar thermo- photovoltaic systems to achieve efficiency exceeding, provides a sharp emissivity peak at the solar cell band-gap while suppressing emission at lower frequencies

Fan, Shanhui

215

Experimental study of a fiber absorber-suppressor modified Trombe wall  

DOE Green Energy (OSTI)

An experimental study has been conducted to ascertain the effects of introducing fiber bed absorbers on Trombe wall passive solar collectors. Two identical, Trombe wall passive solar units were constructed that incorporate the basic components of masonry collector-storage walls: glazings, masonry and thermal insulation. Both units were extensively instrumented with thermocouples and heat flux transducers. Ambient temperature, relative humidity, wind speed and insolation are also measured. In the first part of the study the two Trombe wall units were tested with a single glass cover. The thermal performance of both units was found to be virtually identical. In the second part of the study a single cover Trombe wall unit was compared with a double cover unit and the latter was found to have higher air gap and masonry wall temperatures and heat fluxes. In the final phase of the experiment, an absorbing, scattering and emitting fiberglass-like material was placed in the air gap of the single gazed wall. Tests were conducted to compare the solar-thermal performance, heat loss and gain characteristics between the units with and without the fiber absorber-suppressor. This experiment showed that the fiber bed served to decouple the wall at night from its exterior environment and to reduce the heat losses. The modified Trombe wall with the fiber absorber-suppressor out-performed the double glazed Trombe wall system by approximately ten percent gain in useable thermal energy. Also, the fiber bed eliminates one glazing thereby reducing system cost as well.

Choudhury, D; Birkebak, R C

1982-12-01T23:59:59.000Z

216

Experiment study on single-pass photovoltaic-thermal (PV/T) air collector with absorber  

Science Conference Proceedings (OSTI)

Problem statement: Solar cell received heat from solar irradiance as well and this will reduce the efficiency of the solar cell. The heat trap at the solar photovoltaic panel becomes waste energy. Approach: The solution for this was by adding a cooling ... Keywords: air collector, photovoltaic thermal, rectangle tunnel absorber, thermal efficiency

Goh Li Jin; Hafidz Ruslan; Sohif Mat; Mohd. Yusof Othman; Azami Zaharim; Kamaruzzaman Sopian

2010-10-01T23:59:59.000Z

217

Generator-Absorber heat exchange transfer apparatus and method using an intermediate liquor  

DOE Patents (OSTI)

Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use the working solution of the absorption system for the heat transfer medium where the working solution has an intermediate liquor concentration.

Phillips, Benjamin A. (Benton Harbor, MI); Zawacki, Thomas S. (St. Joseph, MI)

1996-11-05T23:59:59.000Z

218

Tungsten black absorber for solar light with wide angular operation range Eden Rephaeli1,a  

E-Print Network (OSTI)

, a material with a high melting point, since many solar thermal applications, especially solar thermal photovolatics,6,7 require absorbers that can withstand high temperatures. While there is significant amount-difference time-domain method.15 To describe the effect of material dispersion and absorption in the time

Fan, Shanhui

219

Identification and localization of absorbers of variable strength in nuclear reactors  

E-Print Network (OSTI)

noise In order to get some physical insight about the space-dependence of the neutron noise induced`re a,*, G. Andhill b a Department of Reactor Physics, Chalmers University of Technology, SE-412 96 Go of the type ``absorber of variable strength'' (or reactor oscillator) from as few as five neutron detectors

Demazière, Christophe

220

Kinetic and Structural Analysis of Substrate Specificity in Two Copper Amine Oxidases from Hansenula polymorpha  

SciTech Connect

The structural underpinnings of enzyme substrate specificity are investigated in a pair of copper amine oxidases (CAOs) from Hansenula polymorpha (HPAO-1 and HPAO-2). The X-ray crystal structure (to 2.0 {angstrom} resolution) and steady state kinetic data of the second copper amine oxidase (HPAO-2) are presented for comparison to those of HPAO-1. Despite 34% sequence identity and superimposable active site residues implicated in catalysis, the enzymes vary considerably in their substrate entry channel. The previously studied CAO, HPAO-1, has a narrow substrate channel. In contrast, HPAO-2 has a wide funnel-shaped substrate channel, which also contains a side chamber. In addition, there are a number of amino acid changes within the channels of HPAO-2 and HPAO-1 that may sterically impact the ability of substrates to form covalent Schiff base catalytic intermediates and to initiate chemistry. These differences can partially explain the greatly different substrate specificities as characterized by k{sub cat}/K{sub m} value differences. In HPAO-1, the k{sub cat}/K{sub m} for methylamine is 330-fold greater than for benzylamine, whereas in HPAO-2, it is benzylamine that is the better substrate by 750-fold. In HPAO-2, an inflated {sup D}k{sub cat}/K{sub m}(methylamine) in relation to {sup D}k{sub cat}/K{sub m}(benzylamine) indicates that proton abstraction has been impeded more than substrate release. In HPAO-1, {sup D}k{sub cat}/K{sub m}(S) changes little with the slow substrate and indicates a similar increase in the energy barriers that control both substrate binding and subsequent catalysis. In neither case is k{sub cat}/K{sub m} for the second substrate, O{sub 2}, significantly altered. These results reinforce the modular nature of the active sites of CAOs and show that multiple factors contribute to substrate specificity and catalytic efficiency. In HPAO-1, the enzyme with the smaller substrate binding pocket, both initial substrate binding and proton loss are affected by an increase in substrate size, while in HPAO-2, the enzyme with the larger substrate binding pocket, the rate of proton loss is differentially affected when a phenyl substituent in the substrate is reduced to the size of a methyl group.

Chang, Cindy M.; Klema, Valerie J.; Johnson, Bryan J.; Mure, Minae; Klinman, Judith P.; Wilmot, Carrie M. (UCB); (Kansas); (UMM)

2010-04-26T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Structure and dynamics of a complex of cellulose with EDA: insights into the action of amines on cellulose  

SciTech Connect

The neutron structure of a complex of EDA with cellulose has been determined to reveal the location of hydrogen atoms involved in hydrogen bonding. EDA disrupts the hydrogen bonding pattern of naturally occurring cellulose by accepting a strong hydrogen bond from the O6 hydroxymethyl group as the conformation of this group is rotated from tg to gt. The O3-H O5 intrachain hydrogen bond commonly found in cellulose allomorphs is observed to be disordered in the neutron structure, and quantum chemistry and molecular dynamics calculations show that O3 prefers to donate to EDA. The hydrogen bonding arrangement is highly dynamic with bonds continually being formed and broken thus explaining the difficulty in locating all of the hydrogen atoms in the neutron scattering density maps. Comparison with other polysaccharide-amine complexes supports a common underlying mechanism for amine disruption of cellulose.

Sawada, Daisuke [ORNL; Nishiyama, Yoshiharu [Centre de Recherches sur les Macromolecules Vegetales (CERMAV-CNRS); Petridis, Loukas [ORNL; Parthasarathi, R. [Los Alamos National Laboratory (LANL); Gnanakaran, S [Los Alamos National Laboratory (LANL); Forsyth, V. T. [Institut Laue Langevin and Keele University; Wada, Masahisa [University of Tokyo, Japan; Langan, Paul [ORNL

2013-01-01T23:59:59.000Z

222

Revised estimates of electron absorbed fractions and radionuclide S-values in trabecular bone  

E-Print Network (OSTI)

The field of nuclear medicine has reached advanced stages in the use of radiopharmaceuticals for the treatment and diagnosis of innumerable maladies. However, along with the use of nuclear medicine come responsibilities inherently associated with the use of radioactive material. It is necessary to be able to calculate doses in the trabecular bone region accurately and consistently. The accurate assessment of patient dose will allow physicians to better predict the amounts of radioactivity needed for specific diagnostic and therapeutic applications. Additionally, improved calculational techniques for bone dosimetry will decrease the likelihood of overadministrations and will allow for reliable predictions of side-effects to patients. The dosimetry of this region is therefore a very important, and unfortunately complicated, area associated with the field of nuclear medicine. A new dosimetric trabecular bone model has been developed and incorporated into a Monte Carlo radiation transport code to determine electron absorbed fractions in red bone marrow and the endosteal tissue which is contained in trabecular bone. The model is based on measured omnidirectional chord length distributions through trabeculae and marrow cavities in nine skeletal locations. Absorbed fractions were calculated for the two target regions, and then estimated from these results for all other skeletal regions thought to contain red marrow. These absorbed fractions were then used to calculate S-values for a variety of beta-emitting radionuclides at each of 15 skeletal locations thought to contain red bone marrow. Absorbed fractions and S-values were calculated for sources in the marrow, on the bone surface, and in the bone volume. Comparisons were made between the new absorbed fractions and those published in ICRP Publication 30, as well as between the new S-values and those determined from the MIRDOSE2 software.

Parry, Robert Alan

1995-01-01T23:59:59.000Z

223

Final Report for the DOE-BES Program Mechanistic Studies of Activated Hydrogen Release from Amine-Boranes  

DOE Green Energy (OSTI)

Effective storage of hydrogen presents one of the most significant technical gaps to successful implementation of the hydrogen economy, particularly for transportation applications. Amine boranes, such as ammonia borane H3NBH3 and ammonia triborane H3NB3H7, have been identified as promising, high-capacity chemical hydrogen storage media containing potentially readily released protic (N-H) and hydridic (B-H) hydrogens. At the outset of our studies, dehydrogenation of ammonia borane had been studied primarily in the solid state, but our DOE sponsored work clearly demonstrated that ionic liquids, base-initiators and/or metal-catalysts can each significantly increase both the rate and extent of hydrogen release from amine boranes under moderate conditions. Our studies also showed that depending upon the activation method, hydrogen release from amine boranes can occur by very different mechanistic steps and yield different types of spent-fuel materials. The fundamental understanding that was developed during this grant of the pathways and controlling factors for each of these hydrogen-release mechanisms is now enabling continuing discovery and optimization of new chemical-hydride based hydrogen storage systems.

Larry G. Sneddon; R. Thomas Baker

2013-01-13T23:59:59.000Z

224

TABLES OF RADIATION ABSORBED DOSE TO THE EMBRYO/FETUS FROM RADIOPHARMACEUTICALS  

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

TABLES OF RADIATION ABSORBED DOSE TO THE EMBRYO/FETUS TABLES OF RADIATION ABSORBED DOSE TO THE EMBRYO/FETUS FROM RADIOPHARMACEUTICALS LATEST REVISION DATE: 1/21/98 The material in this document is taken from the Master's thesis of Ms. Joy Russell (University of Tennessee, Master's Degree conferred August 1995). The data below, and the methods and assumptions used to derive them, are published in two documents in the Health Physics Journal (73(5):747-755, 1997 and 73(5):756-769, 1997) and also in the Proceedings of the Sixth International Radiopharmaceutical Dosimetry Symposium. Please contact the center with any questions or comments about the data. Richard E. Toohey, 423-576-3448 phone, 423-576-8673 fax, tooheyr@orau.gov e-mail Audrey T. Stelson, 423-576-3450 phone, 423-576-8673 fax, stelsona@orau.gov e-mail

225

A Preliminary Study of Energy Recovery in Vehicles by Using Regenerative Magnetic Shock Absorbers  

DOE Green Energy (OSTI)

Road vehicles can expend a significant amount of energy in undesirable vertical motions that are induced by road bumps, and much of that is dissipated in conventional shock absorbers as they dampen the vertical motions. Presented in this paper are some of the results of a study aimed at determining the effectiveness of efficiently transforming that energy into electrical power by using optimally designed regenerative electromagnetic shock absorbers. In turn, the electrical power can be used to recharge batteries or other efficient energy storage devices (e.g., flywheels) rather than be dissipated. The results of the study are encouraging - they suggest that a significant amount of the vertical motion energy can be recovered and stored.

R. B. Goldner; P. Zerigian; J. R. Hull

2001-05-14T23:59:59.000Z

226

Absorbed XFEL Dose in the Components of the LCLS X-Ray Optics  

Science Conference Proceedings (OSTI)

There is great concern that the short, intense XFEL pulse of the LCLS will damage the optics that will be placed into the beam. We have analyzed the extent of the problem by considering the anticipated materials and position of the optical components in the beam path, calculated the absorbed dose as a function of photon energy, and compared these doses with the expected doses required (i) to observe rapid degradation due to thermal fatigue, (ii) to reach the melting temperature, or (iii) to actually melt the material. We list the materials that are anticipated to be placed into the Linac Coherent Light Source (LCLS) x-ray free electron laser (XFEL) beam line, their positions, and the absorbed dose, and compare this dose with anticipated damage thresholds.

Hau-Riege, Stefan

2010-12-03T23:59:59.000Z

227

Heat and mass transfer in a falling film absorber of ammonia-water absorption systems  

SciTech Connect

For ammonia-water generator-absorber heat exchanger (GAX) systems to work at high coefficient of performance, the heat and mass transfer components have to operate at optimum performance within a narrow range of conditions for the recovery of internal energy. In the present work, an analysis is performed to study the absorption process of an ammonia-water vapor mixture by an aqueous solution of ammonia in a falling film absorber. The combined heat and mass transfer processes involved are analyzed through an integral formulation of the continuity, momentum, energy, and diffusion equations. The effects of vapor flow direction relative to the solution, cooling ability, ammonia concentration of solution and vapor, and interfacial momentum and heat transfer rate on absorption processes are investigated. The characteristics of the absorption process are found to be governed by the relative significance of the mass transfer resistance and the driving forces between the solution film and the vapor mixture.

Kim, B. [Hongik Univ., Seoul (Korea, Republic of). Dept. of Mechanical Engineering

1998-07-01T23:59:59.000Z

228

A Survey of Analogs to Weak MgII Absorbers in the Present  

E-Print Network (OSTI)

We present the results of a survey of the analogs of weak MgII absorbers (rest frame equivalent width W(2796) 0.02 A, with 30% completeness for the weakest lines. We find the number of weak MgII absorber analogs with 0.02 < W(2796) < 0.3 to be dN/dz = 1.00 +/- 0.20 for 0 < z < 0.3. This value is consistent with cosmological evolution of the population. We consider the expected effect on observability of weak MgII absorbers of the decreasing intensity of the extragalactic background radiation eld from z~1 to z~0. Assuming that all the objects that produce absorption at z~1 are stable on a cosmological timescale, and that no new objects are created, we would expect dN/dz of 2-3 at z~0. About 30-50% of this z~0 population would be decendants of the parsec-scale structures that produce single-cloud, weak MgII absorbers at z~1. The other 50-70% would be lower density, kiloparsec-scale structures that produce CIV absorption, but not detectable low ionization absorption, at z~1. We conclude that at least one, and perhaps some fraction of both, of these populations has evolved away since z~1, in order to match the z~0 dN/dz measured in our survey. This would follow naturally for a population of transient structures whose generation is related to star-forming processes, whose rate has decreased since z~1.

Anand Narayanan; Jane C. Charlton; Joe R. Masiero; Ryan Lynch

2005-09-16T23:59:59.000Z

229

Cyanine dyes with high-absorbance cross section as donor chromophores in energy transfer labels  

DOE Patents (OSTI)

Cyanine dyes are used as the donor fluorophore in energy transfer labels in which light energy is absorbed by a donor fluorophore and transferred to an acceptor fluorophore which responds to the transfer by emitting fluorescent light for detection. The cyanine dyes impart an unusually high sensitivity to the labels thereby improving their usefulness in a wide variety of biochemical procedures, particularly nucleic acid sequencing, nucleic acid fragment sizing, and related procedures.

Glazer, Alexander N. (Orinda, CA); Mathies, Richard A. (Moraga, CA); Hung, Su-Chun (Richmond, CA); Ju, Jingyue (Redwood City, CA)

1998-01-01T23:59:59.000Z

230

Aging behavior of polymeric solar absorber materials: Aging on the component level  

SciTech Connect

Within this study, the aging behavior of a PPE + PS absorber material was investigated on the absorber component level. To indicate aging, characteristic mechanical values were determined by indentation tests of specimens taken from components and exposed to laboratory aging (140 C in air, 80 C in water) and service near outdoor aging conditions (stagnation in northern climate). In addition to the mechanical tests, the unaged and aged specimens were also characterized thermo-analytically via differential scanning calorimetry (DSC). The results indicate that reductions in both characteristic mechanical values of the indentation tests, i.e., load of the first transition and ultimate indentation, reflect at least some physical aging although chemical aging may also be of importance based on previous analytical investigations of laboratory aged polymer films. While laboratory aging in air at 140 C and service exposure at a test facility in Oslo (N) under stagnation conditions led to a significant reduction in the mechanical indentation resistance, no influence of laboratory aging in water at 80 C on the mechanical behavior of the absorber sheet was found. Depending on the ultimate failure criterion applied (reduction of characteristic mechanical values to 80% and 50%, respectively), the technical service life found for hot air laboratory and stagnation service conditions was found to be less than 51 and 159 h, respectively. As these durations are significantly below the estimated stagnation conditions accumulated in the desired operation lifetime for such a collector, the PPE + PS type investigated does not seem to be a proper material candidate for solar thermal absorbers. Finally, based on the results obtained, a relation between laboratory aging time in air at 140 C and cumulated irradiation energy during exposure on the test facility in Oslo was established. (author)

Kahlen, S. [Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, A-8700 Leoben (Austria); Wallner, G.M.; Lang, R.W. [Institute for Polymeric Materials and Testing, University of Linz, Altenbergerstrasse 69, A-4040 Linz (Austria); Meir, M.; Rekstad, J. [Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo (Norway)

2010-03-15T23:59:59.000Z

231

Program on Technology Innovation: Technical Assessment of Grid Shock Absorber Concept  

Science Conference Proceedings (OSTI)

Grid Shock Absorber is a concept developed by EPRI aiming at increasing robustness and integrity of transmission grids. The report document the results of an initial phase of the concept. The proof study consists of segmenting the Eastern US grid into asynchronous sectors interconnected by voltage source converter-based DC links and back-to-back ties.The reliability benefits of the Concept have been demonstrated by simulation of contingencies that would likely lead to cascading and blackouts. The Grid Sh...

2006-11-06T23:59:59.000Z

232

A Review of Literature Related to the Use of Spray Dryer Absorber Material  

Science Conference Proceedings (OSTI)

Coal-fired power plants account for the majority of sulfur dioxide (SO2) emissions in the United States. Legislative actions in the United States and elsewhere have been responsible for most industrial SO2 controls, resulting in the installation of flue gas desulfurization (FGD) systems. In the United States, approximately 85% of FGD systems are wet, 12% are spray dryer absorber (SDA) systems, and 3% are dry injection systems. This report is a compilation of an extensive literature review on SDA systems ...

2007-09-20T23:59:59.000Z

233

Cyanine dyes with high-absorbance cross section as donor chromophores in energy transfer labels  

DOE Patents (OSTI)

Cyanine dyes are used as the donor fluorophore in energy transfer labels in which light energy is absorbed by a donor fluorophore and transferred to an acceptor fluorophore which responds to the transfer by emitting fluorescent light for detection. The cyanine dyes impart an unusually high sensitivity to the labels thereby improving their usefulness in a wide variety of biochemical procedures, particularly nucleic acid sequencing, nucleic acid fragment sizing, and related procedures. 22 figs.

Glazer, A.N.; Mathies, R.A.; Hung, S.C.; Ju, J.

1998-12-29T23:59:59.000Z

234

Reaction of Tris(cyclopentadienyl)uranium compounds with amines, azides, and related ligands  

Science Conference Proceedings (OSTI)

The trivalent uranium compound, (MeC{sub 5}H{sub 4}){sub 3}U(thf), serves as a one- or two-electron reducing agent towards azides, RN{sub 3}. These reactions produce either the uranium(IV) azide, (MeC{sub 5}H{sub 4}){sub 3}UN{sub 3}, or uranium(V) imides, (MeC{sub 5}H{sub 4}){sub 3}UNR. The role of steric and electronic effects upon this reaction has been investigated using several series of azides. For Me{sub 3}XN{sub 3}, the imides are produced when X = C or Si, both products are formed when X = Ge, and the azide is produced when X = Sn. For Ph{sub 3}XN{sub 3}, the azide is produced when X = C or Sn. For Ph{sub 3-x}CH{sub 3}N{sub 3}, the imide is produced when x = 2 and both compounds are produced when x = 1. For substituted phenylazides, RC{sub 6}H{sub 4}N{sub 3}, only the imides are produced. The magnetic properties of uranium diimides, ((MeC{sub 5}H{sub 4}){sub 3}U){sub 2}({mu}-NRN), were investigated. Several uranium(III) amines, (MeC{sub 5}H{sub 4}){sub 3}U(NH{sub 2}R), were produced from (MeC{sub 5}H{sub 4}){sub 3}U(thf) and RNH{sub 2}, and NH{sub 3} was found to be a better ligand towards (MeC{sub 5}H{sub 4}){sub 3}U than is PMe{sub 3}.

Rosen, R.K.

1989-12-01T23:59:59.000Z

235

Isotopic and stereochemical probes of the mechanism of bovine plasma amine oxidase  

SciTech Connect

Isotopic and stereochemical probes have been employed to investigate the mechanisms of bovine plasma amine oxidase (BPAO). The pH dependence of isotope effects on steady-state parameters for benzylamine oxidation indicate that the C-H bond breaking step is fully rate-limiting on k/sub cat//K/sub m/ over the experimental pH range. The rate of enzyme reoxidation appears to be partially rate-limiting on k/sub cat/ as values of /sup D/k/sub cat/ are reduced relative to /sup D/k/sub cat//K/sub m/ from pH 5.5 - 10.0. Two microscopic ionizations on k/sub cat//K/sub m/, pK/sub 1/ = 8.0 +/- 0.10 and pK/sub s/ = 9.0 +/- 0.16, are ascribed to an active site residue which must be unprotonated for catalysis, and to substrate binding in the unionized form to the enzyme, respectively. EF/sub 1/ undergoes a pK/sub a/ perturbation from 8.0 to 5.6 in the E x S complex as a result of charge from the protonated imine nitrogen of the enzyme substrate Schiff's base. A pK/sub a/ of 5.5 +/- 0.1 is observed in the pH profile for exchange of tritium from C-2 during oxidation of (2-/sup 3/H)-dopamine. These data support the conclusion that EB/sub 1/ catalyzes both imine exchange at C-2 of phenethylamine substrates as well as substrate oxidation at C-1.

Farnum, M.F.

1986-01-01T23:59:59.000Z

236

Advanced Amine Solvent Formulations and Process Integration for Near-Term CO2 Capture Success  

Science Conference Proceedings (OSTI)

This Phase I SBIR project investigated the economic and technical feasibility of advanced amine scrubbing systems for post-combustion CO2 capture at coal-fired power plants. Numerous combinations of advanced solvent formulations and process configurations were screened for energy requirements, and three cases were selected for detailed analysis: a monoethanolamine (MEA) base case and two “advanced” cases: an MEA/Piperazine (PZ) case, and a methyldiethanolamine (MDEA) / PZ case. The MEA/PZ and MDEA/PZ cases employed an advanced “double matrix” stripper configuration. The basis for calculations was a model plant with a gross capacity of 500 MWe. Results indicated that CO2 capture increased the base cost of electricity from 5 cents/kWh to 10.7 c/kWh for the MEA base case, 10.1 c/kWh for the MEA / PZ double matrix, and 9.7 c/kWh for the MDEA / PZ double matrix. The corresponding cost per metric tonne CO2 avoided was 67.20 $/tonne CO2, 60.19 $/tonne CO2, and 55.05 $/tonne CO2, respectively. Derated capacities, including base plant auxiliary load of 29 MWe, were 339 MWe for the base case, 356 MWe for the MEA/PZ double matrix, and 378 MWe for the MDEA / PZ double matrix. When compared to the base case, systems employing advanced solvent formulations and process configurations were estimated to reduce reboiler steam requirements by 20 to 44%, to reduce derating due to CO2 capture by 13 to 30%, and to reduce the cost of CO2 avoided by 10 to 18%. These results demonstrate the potential for significant improvements in the overall economics of CO2 capture via advanced solvent formulations and process configurations.

Fisher, Kevin S.; Searcy, Katherine; Rochelle, Gary T.; Ziaii, Sepideh; Schubert, Craig

2007-06-28T23:59:59.000Z

237

X-Ray Wind Tomography of the highly absorbed HMXB IGR J17252-3616  

E-Print Network (OSTI)

Our goal is to understand the specificities of highly absorbed sgHMXB and in particular of the companion stellar wind, thought to be responsible for the strong absorption. We have monitored IGR J17252-3616, a highly absorbed system featuring eclipses, with XMM-Newton to study the vari- ability of the column density and of the Fe K{\\alpha} emission line along the orbit and during the eclipses. We also built a 3D model of the structure of the stellar wind to reproduce the observed variability. We first derived a refined orbital solution built from INTEGRAL, RXTE and XMM data. The XMM monitoring campaign revealed significant variation of intrinsic absorbing column density along the orbit and of the Fe K{\\alpha} line equivalent width around the eclipses. The origin of the soft X-ray absorption is modeled with an dense and extended hydrodynamical tail, trailing the neutron star. This structure extends along most of the orbit, indicating that the stellar wind is strongly disrupted by the neutron star. The variabili...

Manousakis, A

2010-01-01T23:59:59.000Z

238

MHK Technologies/Multi Absorbing Wave Energy Converter MAWEC | Open Energy  

Open Energy Info (EERE)

Absorbing Wave Energy Converter MAWEC Absorbing Wave Energy Converter MAWEC < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Multi Absorbing Wave Energy Converter MAWEC.jpg Technology Profile Primary Organization Leancon Wave Energy Project(s) where this technology is utilized *MHK Projects/Leancon Real Sea Test Technology Resource Click here Wave Technology Type Click here Oscillating Wave Surge Converter Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description MAWEC is an OWC wave energy converter that works differently from other OWCs in that it concurrently utilizes pressure and suck. This gives the wanted effect that the vertical force on the WEC is zero when the WEC stretches over more than one wave length. The device is V-shaped and oriented perpendicular to wave direction. The device consists of a number of vertical air tubes, and when a wave passes, air is pushed into a pressure channel that sucks air out of the suck channel. During one wave period each tube (120 in total) goes through a sequence where air is first pushed into a pressure channel when the wave is rising and is later sucked from the pressure channel when the wave is falling. In this situation there is constant pressure in the pressure channel and the air flow through the turbines is constant.

239

Discovery of a Metal-Line Absorber Associated with a Local Dwarf Starburst Galaxy  

E-Print Network (OSTI)

We present optical and near-infrared images, H I 21 cm emission maps, optical spectroscopy, and Hubble Space Telescope/Space Telescope Imaging Spectrograph ultraviolet spectroscopy of the QSO/galaxy pair SBS 1122+594/IC 691. The QSO sight line lies at a position angle of 27 degrees from the minor axis of the nearby dwarf starburst galaxy IC 691 (cz_gal = 1204+-3 km/s, L_B ~ 0.09 L*, current star formation rate = 0.08-0.24 solar masses per year) and 33 kpc (6.6 arcmin) from its nucleus. We find that IC 691 has an H I mass of M_HI = (3.6+-0.1) x 10^8 solar masses and a dynamical mass of M_dyn = (3.1+-0.5) x 10^10 solar masses. The UV spectrum of SBS 1122+594 shows a metal-line (Ly-alpha + C IV) absorber near the redshift of IC 691 at cz_abs = 1110+-30 km/s. Since IC 691 is a dwarf starburst and the SBS 1122+594 sight line lies in the expected location for an outflowing wind, we propose that the best model for producing this metal-line absorber is a starburst wind from IC 691. We place consistent metallicity limits on IC 691 ([Z/Zsun] ~ -0.7) and the metal-line absorber ([Z/Zsun] energy to the surrounding intergalactic medium.

Brian A. Keeney; John T. Stocke; Jessica L. Rosenberg; Jason Tumlinson; Donald G. York

2006-08-15T23:59:59.000Z

240

Open-cycle absorption cooling using packed-bed absorbent reconcentration  

DOE Green Energy (OSTI)

The technical feasibility of a lithium chloride open-cycle absorption air conditioner using solar-heated air for reconcentration of the absorbent solution is examined. In contrast to a successfully operating Soviet design (in which absorbent reconcentration is accomplished by trickling the solution across a sloping black roof exposed to the sun), this study involves a packed-bed concentrator. Solar-heated air reconcentrates the solution by vaporizing water (the refrigerant) from the solution in the packed bed, enabling the system to be incorporated into a conventional solar air heating system and avoiding numerous problems associated with the roof concentrator. A thermodynamic analysis provides the criteria for the design of the packed bed. Heat and mass transfer processes occurring simultaneously in the bed are modeled using an iterative technique with the aid of a digital computer. The size of the packed-bed required to reconcentrate the absorbent solution at a rate corresponding to 10,550 W of cooling is determined, using flow rates, temperatures, and humidities typical of residential solar air-heating systems. Based on these results, the system air conditioning capability with solar energy input is predicted over the course of a clear summer day for Fort Collins, Colorado, and St. Louis, Missouri. Sufficient cooling capacity to meet a 10,550 W peak load using a 70 m/sup 2/ flatplate collector array is predicted by the model for both locations.

Leboeuf, C. M.; Loef, G. O.G.

1980-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Improved high temperature solar absorbers for use in Concentrating Solar Power central receiver applications.  

DOE Green Energy (OSTI)

Concentrating solar power (CSP) systems use solar absorbers to convert the heat from sunlight to electric power. Increased operating temperatures are necessary to lower the cost of solar-generated electricity by improving efficiencies and reducing thermal energy storage costs. Durable new materials are needed to cope with operating temperatures >600 C. The current coating technology (Pyromark High Temperature paint) has a solar absorptance in excess of 0.95 but a thermal emittance greater than 0.8, which results in large thermal losses at high temperatures. In addition, because solar receivers operate in air, these coatings have long term stability issues that add to the operating costs of CSP facilities. Ideal absorbers must have high solar absorptance (>0.95) and low thermal emittance (<0.05) in the IR region, be stable in air, and be low-cost and readily manufacturable. We propose to utilize solution-based synthesis techniques to prepare intrinsic absorbers for use in central receiver applications.

Stechel, Ellen Beth; Ambrosini, Andrea; Hall, Aaron Christopher; Lambert, Timothy L.; Staiger, Chad Lynn; Bencomo, Marlene

2010-09-01T23:59:59.000Z

242

IRRADIATION TESTING OF THE RERTR FUEL MINIPLATES WITH BURNABLE ABSORBERS IN THE ADVANCED TEST REACTOR  

SciTech Connect

Based on the results of the reactor physics assessment, conversion of the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL) can be potentially accomplished in two ways, by either using U-10Mo monolithic or U-7Mo dispersion type plates in the ATR fuel element. Both designs, however, would require incorporation of the burnable absorber in several plates of the fuel element to compensate for the excess reactivity and to flatten the radial power profile. Several different types of burnable absorbers were considered initially, but only borated compounds, such as B4C, ZrB2 and Al-B alloys, were selected for testing primarily due to the length of the ATR fuel cycle and fuel manufacturing constraints. To assess and compare irradiation performance of the U-Mo fuels with different burnable absorbers we have designed and manufactured 28 RERTR miniplates (20 fueled and 8 non-fueled) containing fore-mentioned borated compounds. These miniplates will be tested in the ATR as part of the RERTR-13 experiment, which is described in this paper. Detailed plate design, compositions and irradiations conditions are discussed.

I. Glagolenko; D. Wachs; N. Woolstenhulme; G. Chang; B. Rabin; C. Clark; T. Wiencek

2010-10-01T23:59:59.000Z

243

An overview of the development, testing, and application of composite absorbers  

Science Conference Proceedings (OSTI)

Although inorganic exchangers offer many advantages for removing selected elements from radioactive waste streams, few of these materials are suitable for use in packed-bed columns. We review various adaptations of inorganic exchangers for use in columns, which include granular forms of the intrinsic absorbers, absorber compounds supported on other materials, and composite absorbers that use organic or inorganic binders. An organic binding polymer of polyacrylonitrile (PAN), developed at the Czech Technical University, has been demonstrated to offer advantages. We describe general methods for preparing inorganic exchange materials, which then are incorporated into PAN-based composites. Such PAN composites have been used to remove selected radionuclides from a variety of liquid waste streams. Sixteen different PAN composites were prepared for testing at Los Alamos National Laboratory (LANL) as part of an evaluation of potential partitioning agents for remediating the liquid waste in underground storage tanks at the Hanford site near Richland, Washington. Our collaboration with LANL is expected to continue for another 2 years.

Sebesta, F. [Czech Technical Univ., Brehova (Czech Republic); John, J. [Los Alamos National Lab., NM (United States)

1995-02-01T23:59:59.000Z

244

Characterization and device performance of (AgCu)(InGa)Se2 absorber layers  

DOE Green Energy (OSTI)

The study of (AgCu)(InGa)Se2 absorber layers is of interest in that Ag-chalcopyrites exhibit both wider bandgaps and lower melting points than their Cu counterparts. (AgCu)(InGa)Se2 absorber layers were deposited over the composition range 0 < Ag/(Ag+Cu) < 1 and 0.3 < Ga/(In+Ga) < 1.0 using a variety of elemental co-evaporation processes. Films were found to be singlephase over the entire composition range, in contrast to prior studies. Devices with Ga content 0.3 < Ga/(In+Ga) <0.5 tolerated Ag incorporation up to Ag/(Ag+Cu) = 0.5 without appreciable performance loss. Ag-containing films with Ga/(In+Ga) = 0.8 showed improved device characteristics over Cu-only control samples, in particular a 30-40% increase in short-circuit current. An absorber layer with composition Ag/(Ag+Cu) = 0.75 and Ga/(In+Ga) = 0.8 yielded a device with VOC = 890 mV, JSC = 20.5mA/cm2, fill factor = 71.3%, and ? = 13.0%.

Hanket, Gregory; Boyle, Jonathan H.; Shafarman, William N.

2009-06-08T23:59:59.000Z

245

Development of a carbonaceous selective absorber for solar thermal energy collection and process for its formation: Final report  

Science Conference Proceedings (OSTI)

The main goal of the US Department of Energy supported part of this project is to develop information about controlling the complicated chemical processes involved in the formation of a carbonaceous selective absorber and learn what equipment will allow production of this absorber commercially. The work necessary to accomplish this goal is not yet complete. Formation of the carbonaceous selective absorber in the conveyor oven tried so far has been unsatisfactory, because the proper conditions for applying the carbonaceous coating in each conveyor oven fabricated, either have been difficult to obtain, or have been difficult to maintain over an extended period of time. A new conveyor oven is nearing completion which is expected to allow formation of the carbonaceous selective absorber on absorber tubes in a continuous operation over many days without the necessity of cleaning the conveyor oven or changing the thickness of the electroplated nickel catalyst to compensate for changes in the coating environment in the oven. Work under this project concerned with forming and sealing glass panels to test ideas on evacuated glass solar collector designs and production have been generally quite satisfactory. Delays in completion of the selective absorber work, has caused postponement of the fabrication of a small prototype evacuated glass solar collector panel. Preliminary cost estimates of the selective absorber and solar collector panel indicate that this collector system should be lower in cost than evacuated solar collectors now on the market. 4 figs.

Garrison, J.D.

1989-02-25T23:59:59.000Z

246

Expansion of Michigan EOR Operations Using Advanced Amine Technology at a 600 MW Project Wolverine Carbon Capture and Storage Project  

SciTech Connect

Wolverine Power Supply Cooperative Inc, a member owned cooperative utility based in Cadillac Michigan, proposes to demonstrate the capture, beneficial utilization and storage of CO{sub 2} in the expansion of existing Enhanced Oil Recovery operations. This project is being proposed in response to the US Department of Energy Solicitation DE-FOA-0000015 Section III D, 'Large Scale Industrial CCS projects from Industrial Sources' Technology Area 1. The project will remove 1,000 metric tons per day of CO{sub 2} from the Wolverine Clean Energy Venture 600 MW CFB power plant owned and operated by WPC. CO{sub 2} from the flue gas will be captured using Hitachi's CO{sub 2} capture system and advanced amine technology. The capture system with the advanced amine-based solvent supplied by Hitachi is expected to significantly reduce the cost and energy requirements of CO{sub 2} capture compared to current technologies. The captured CO{sub 2} will be compressed and transported for Enhanced Oil Recovery and CO{sub 2} storage purposes. Enhanced Oil Recovery is a proven concept, widely used to recover otherwise inaccessible petroleum reserves. While post-combustion CO{sub 2} capture technologies have been tested at the pilot scale on coal power plant flue gas, they have not yet been demonstrated at a commercial scale and integrated with EOR and storage operations. Amine-based CO{sub 2} capture is the leading technology expected to be available commercially within this decade to enable CCS for utility and industrial facilities firing coal and waste fuels such as petroleum coke. However, traditional CO{sub 2} capture process utilizing commercial amine solvents is very energy intensive for regeneration and is also susceptible to solvent degradation by oxygen as well as SOx and NO{sub 2} in the flue gas, resulting in large operating costs. The large volume of combustion flue gas with its low CO{sub 2} concentration requires large equipment sizes, which together with the highly corrosive nature of the typical amine-based separation process leads to high plant capital investment. According to recent DOE-NETL studies, MEA-based CCS will increase the cost of electricity of a new pulverized coal plant by 80-85% and reduce the net plant efficiency by about 30%. Non-power industrial facilities will incur similar production output and efficiency penalties when implementing conventional carbon capture systems. The proposed large scale demonstration project combining advanced amine CO{sub 2} capture integrated with commercial EOR operations significantly advances post-combustion technology development toward the DOE objectives of reducing the cost of energy production and improving the efficiency of CO{sub 2} Capture technologies. WPC has assembled a strong multidisciplinary team to meet the objectives of this project. WPC will provide the host site and Hitachi will provide the carbon capture technology and advanced solvent. Burns and Roe bring expertise in overall engineering integration and plant design to the team. Core Energy, an active EOR producer/operator in the State of Michigan, is committed to support the detailed design, construction and operation of the CO{sub 2} pipeline and storage component of the project. This team has developed a Front End Engineering Design and Cost Estimate as part of Phase 1 of DOE Award DE-FE0002477.

H Hoffman; Y kishinevsky; S. Wu; R. Pardini; E. Tripp; D. Barnes

2010-06-16T23:59:59.000Z

247

Method and apparatus for determining the content and distribution of a thermal neutron absorbing material in an object  

DOE Patents (OSTI)

The disclosure is directed to an apparatus and method for determining the content and distribution of a thermal neutron absorbing material within an object. Neutrons having an energy higher than thermal neutrons are generated and thermalized. The thermal neutrons are detected and counted. The object is placed between the neutron generator and the neutron detector. The reduction in the neutron flux corresponds to the amount of thermal neutron absorbing material in the object. The object is advanced past the neutron generator and neutron detector to obtain neutron flux data for each segment of the object. The object may comprise a space reactor heat pipe and the thermal neutron absorbing material may comprise lithium.

Crane, Thomas W. (Los Alamos, NM)

1986-01-01T23:59:59.000Z

248

Synthetic Studies Toward Selected Members of the Pyrrole-imidazole Alkaloids: Axinellamine, Konbu’acidin and Palau' amine  

E-Print Network (OSTI)

The pyrrole imidazole alkaloids (PIA) is an ever-growing family of structurally related natural products isolated from several species of sponges which now features more than one hundred memebrs. Their complex molecular architectures, and in some cases, significant biological activities, have made these alkaloids the synthetic targets of a number of research groups across the world. In our approach, following early biosynthetic proposal by Kinnel and Scheuer and Al-Mourabit and Potier, it was envisioned that several of these alkaloids, namely palau’amine, axinellamine, konbu’acidin, styloguanidine and massadine, could be derived from a common chlorocyclopentane precursor through different modes of intramolecular cyclization. Building on the work done previously in our research group by Dr. Anja Dilley, Dr. Paul Dransfield, and Dr. Shaohui Wang, my investigations led to the synthesis of the angular aza-triquinane core of axinellamine and the peculiar transazabicyclo[ 3.3.0]octane core of palau’amine. In my further studies mono- and bis-pyrrole advanced intermediates were synthesized that contain the complete carbon framework of the target natural products. However, attempts to induce the pivotal, potentially biomimetic cyclizations expected to deliver the cores of the target alkaloids proved to be rather challenging, resulting in inconsistent and irreproducible results and leading to the exploration of an alternative, “abiotic” approach. My efforts in this direction resulted in the synthesis of a pentacyclic enamine precursor to styloguanidine and a pentacyclic carbinolamine suitable for the synthesis of palau’amine. Final attempts to complete the target natural products were however unsuccessful.

Zancanella, Manuel

2010-08-01T23:59:59.000Z

249

Design Issues for the Superconducting Magnet that Goes Around the Liquid Hydrogen Absorber for the Muon Ionization Cooling Experiment (MICE)  

E-Print Network (OSTI)

3) the size of the heat exchanger around the liquid hydrogendo not require a large heat exchanger to get the heat out ofMICE hydrogen absorber heat exchanger was designed to remove

2004-01-01T23:59:59.000Z

250

Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump  

DOE Patents (OSTI)

Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use the working solution of the absorption system for the heat transfer medium.

Phillips, Benjamin A. (Benton Harbor, MI); Zawacki, Thomas S. (St. Joseph, MI); Marsala, Joseph (Glen Ellyn, IL)

1994-11-29T23:59:59.000Z

251

Nonlinear Effects of Coexisting Surface and Atmospheric Forcing of Anthropogenic Absorbing Aerosols: Impact on the South Asian Monsoon Onset  

Science Conference Proceedings (OSTI)

The direct radiative effect of absorbing aerosols consists of absorption-induced atmospheric heating together with scattering- and absorption-induced surface cooling. It is thus important to understand whether some of the reported climate impacts ...

Shao-Yi Lee; Ho-Jeong Shin; Chien Wang

2013-08-01T23:59:59.000Z

252

Canonical quantization of a dissipative system interacting with an anisotropic non-linear absorbing environment  

E-Print Network (OSTI)

A canonical quantization scheme is represented for a quantum system interacting with a nonlinear absorbing environment. The environment is taken anisotropic and the main system is coupled to its environment through some coupling tensors of various ranks. The nonlinear response equation of the environment against the motion of the main system is obtained. The nonlinear Langevin-schr\\"{o}dinger equation is concluded as the macroscopic equation of motion of the dissipative system. The effect of nonlinearity of the environment is investigated on the spontaneous emission of an initially excited two level-atom imbedded in such an environmrnt.

M. Amooshahi; E. Amooghorban

2009-11-09T23:59:59.000Z

253

The Fate of Mercury Absorbed in Flue Gas Desulfurization (FGD) Systems  

Science Conference Proceedings (OSTI)

Wet flue gas desulfurization (FGD) systems are known to remove a percentage of the mercury in coal flue gases. This raises several questions about the fate of mercury removed by wet FGD systems: Does the absorbed mercury stay in the FGD liquor or does it leave with the byproduct solids? What happens to mercury in the FGD liquor and solid byproducts when they leave the FGD system? To address such questions, this report describes results from an EPRI project that involves field sample collection and labora...

2005-03-24T23:59:59.000Z

254

Development of an optimal impact energy absorber for highway crash cushions  

E-Print Network (OSTI)

The objective of this research is to develop a new and efficient method of absorbing a vehicle??s kinetic energy for highway safety crash cushions. A vehicle that makes a direct impact with a rigid highway structure traveling at highway speeds can be fatal for its occupants. Crash cushions are implemented on roadways in front of these rigid structures with the intent to ??soften?? the impact. The cushion will bring a vehicle to a stop at safe rates before it impacts the rigid structure. The energy absorbing component of the crash cushion must meet four main requirements. The cushion must reduce the vehicles speed at a rate that does not allow the occupant to impact the vehicle interior at velocities greater than 12 m/s. The cushion must then bring the vehicle to a complete stop with deceleration rates below 20 g??s. A crash cushion must satisfy these requirements for an 820 kg vehicle and a 2000 kg vehicle traveling at 100 km/hr. Advanced design methodologies were applied to enable multiple, innovative design concepts. These concepts made use of the deformation of steel in structural pipe, structural angle, and structural plate to reduce the velocity of a vehicle at a safe rate. Critical design parameters were identified which allowed for efficient and effective numerical experiments to be conducted. The data collected from these experiments were then validated when compared to physical test data. After the data had been collected, each of the designs was compared to one another in order to decide upon the best design. The design selected was the deforming plate concept which makes use of steel plate mounted in a fashion that created two arms that acted similar to two cantilever beams. A wedge was forced beneath these arms deforming them upward. This design is effective because the deformation can be easily controlled by the thickness of the plate, the moment arm created by the wedge, and the geometry of the wedge. Steel plate is a readily available material that requires minimal manufacturing for installation preparation making it cost-effective, and easy to install. In the event of impact with the cushion, new parts will be inexpensive and readily available. Being reusable, easy to repair and low in cost, the energy absorbing concept presented herein is a cost effective alternative to existing energy absorbing technology. Due to replaceable parts being readily available, repair time and cost will be reduced compared to other designs that require new parts to be fabricated for replacement. This will make for a competitive design.

Michalec, Christopher Ryan

2005-08-01T23:59:59.000Z

255

Measured performances of curved inverted-vee, absorber compound parabolic concentrating solar-energy collectors  

SciTech Connect

The design and thermal performance of modified compound parabolic concentrating (CPC) solar-energy collectors are described. The designs incorporate a curved inverted-Vee absorber fin, which allows a reflector of simple geometry to be used. This CPC collector, has exhibited a superior performance to that of a conventional cusp-reflector CPC design, owing to the enhancement of the optical efficiency obtained by eliminating gap optical losses and an enhanced heat removal factor. The consequence upon the performance of a further design refinement, which inhibited the convective heat losses, is also reported.

Norton, B. (Univ. of Ulster at Jordanstown (Ireland)); Prapas, D.E. (Aristotle Univ. of Thessaloniki (Greece)); Eames, P.C.; Probert, S.D. (Cranfield Institute of Technology, Bedford (England))

1989-01-01T23:59:59.000Z

256

Encapsulation and Characterization of Proton-Bound Amine Homodimers in a Water Soluble, Self-Assembled Supramolecular Host  

DOE Green Energy (OSTI)

Cyclic amines can be encapsulated in a water-soluble self-assembled supramolecular host upon protonation. The hydrogen bonding ability of the cyclic amines, as well as the reduced degrees of rotational freedom, allows for the formation of proton-bound homodimers inside of the assembly which are otherwise not observable in aqueous solution. The generality of homodimer formation was explored with small N-alkyl aziridines, azetidines, pyrrolidines and piperidines. Proton-bound homodimer formation is observed for N-alkylaziridines (R = methyl, isopropyl, tert-butyl), N-alkylazetidines (R = isopropyl, tertbutyl), and N-methylpyrrolidine. At high concentration, formation of a proton-bound homotrimer is observed in the case of N-methylaziridine. The homodimers stay intact inside the assembly over a large concentration range, thereby suggesting cooperative encapsulation. Both G3(MP2)B3 and G3B3 calculations of the proton-bound homodimers were used to investigate the enthalpy of the hydrogen bond in the proton-bound homodimers and suggest that the enthalpic gain upon formation of the proton-bound homodimers may drive guest encapsulation.

Pluth, Michael; Fiedler, Dorothea; Mugridge, Jeffrey; Bergman, Robert; Raymond, Kenneth

2008-10-01T23:59:59.000Z

257

A TECHNICAL, ECONOMIC AND ENVIRONMENTAL ASSESSMENT OF AMINE-BASED CO2 CAPTURE TECHNOLOGY FOR POWER PLANT GREENHOUSE GAS CONTROL  

Science Conference Proceedings (OSTI)

Capture and sequestration of CO{sub 2} from fossil fuel power plants is gaining widespread interest as a potential method of controlling greenhouse gas emissions. Performance and cost models of an amine (MEA)-based CO{sub 2} absorption system for post-combustion flue gas applications have been developed, and integrated with an existing power plant modeling framework that includes multi-pollutant control technologies for other regulated emissions. The integrated model has been applied to study the feasibility and cost of carbon capture and sequestration at both new and existing coal-burning power plants. The cost of carbon avoidance was shown to depend strongly on assumptions about the reference plant design, details of the CO{sub 2} capture system design, interactions with other pollution control systems, and method of CO{sub 2} storage. The CO{sub 2} avoidance cost for retrofit systems was found to be generally higher than for new plants, mainly because of the higher energy penalty resulting from less efficient heat integration, as well as site-specific difficulties typically encountered in retrofit applications. For all cases, a small reduction in CO{sub 2} capture cost was afforded by the SO{sub 2} emission trading credits generated by amine-based capture systems. Efforts are underway to model a broader suite of carbon capture and sequestration technologies for more comprehensive assessments in the context of multi-pollutant environmental management.

Edward S. Rubin; Anand B. Rao

2002-10-01T23:59:59.000Z

258

Structural, Optical and Electrical Properties of PbSe Nanocrystal Solids Treated Thermally or with Simple Amines  

Science Conference Proceedings (OSTI)

We describe the structural, optical, and electrical properties of films of spin-cast, oleate-capped PbSe nanocrystals that are treated thermally or chemically in solutions of hydrazine, methylamine, or pyridine to produce electronically coupled nanocrystal solids. Postdeposition heat treatments trigger nanocrystal sintering at {approx}200 C, before a substantial fraction of the oleate capping group evaporates or pyrolyzes. The sintered nanocrystal films have a large hole density and are highly conductive. Most of the amine treatments preserve the size of the nanocrystals and remove much of the oleate, decreasing the separation between nanocrystals and yielding conductive films. X-ray scattering, X-ray photoelectron and optical spectroscopy, electron microscopy, and field-effect transistor electrical measurements are used to compare the impact of these chemical treatments. We find that the concentration of amines adsorbed to the NC films is very low in all cases. Treatments in hydrazine in acetonitrile remove only 2-7% of the oleate yet result in high-mobility n-type transistors. In contrast, ethanol-based hydrazine treatments remove 85-90% of the original oleate load. Treatments in pure ethanol strip 20% of the oleate and create conductive p-type transistors. Methylamine- and pyridine-treated films are also p-type. These chemically treated films oxidize rapidly in air to yield, after short air exposures, highly conductive p-type nanocrystal solids. Our results aid in the rational development of solar cells based on colloidal nanocrystal films.

Law, M.; Luther, J. M.; Song, Q.; Hughes, B. K.; Perkins, C. L.; Nozik, A. J.

2008-01-01T23:59:59.000Z

259

Review of Mid- to High-Temperature Solar Selective Absorber Materials  

DOE Green Energy (OSTI)

This report describes the concentrating solar power (CSP) systems using solar absorbers to convert concentrated sunlight to thermal electric power. It is possible to achieve solar absorber surfaces for efficient photothermal conversion having high solar absorptance (a) for solar radiation and a low thermal emittance (e) at the operational temperature. A low reflectance (?'' 0) at wavelengths (?) 3 mm and a high reflectance (?'' 1) at l 3 mm characterize spectrally selective surfaces. The operational temperature ranges of these materials for solar applications can be categorized as low temperature (T< 100 C), mid-temperature (100 C< T< 400 C), and high-temperature (T> 400 C). High- and mid-temperature applications are needed for CSP applications. For CSP applications, the ideal spectrally selective surface would be low-cost and easy to manufacture, chemically and thermally stable in air at elevated operating temperatures (T= 500 C), and have a solar absorptance= 0.98 and a thermal emittance= 0.05 at 500 C.

Kennedy, C. E.

2002-07-01T23:59:59.000Z

260

A solar test collector for evaluation of both selective and non-selective absorbers  

DOE Green Energy (OSTI)

A solar test collector was designed for the testing of thermally absorbing coatings under controlled conditions. The design consisted of a collector fed by a controlled temperature fluid within the range of 25 to 90/sup 0/C (77 to 194/sup 0/F). This temperature was maintained by a custom electronic controller. A small variable flow pump circulated water through three collector pipes at selected flow rates. Strip heaters coupled with a differential temperature controller compensated for edge losses associated with small collectors. Detailed design and operation data were presented and three black chrome and one non-selective absorber were analyzed in detail by test collector measurements. Results showed Efficiencies as high as 77% and 75% (..delta..T = 0) were obtained respectively for 1.0 ..mu..m black chrome on copper and nickel plated steel. The lowest loss coefficients were about 3.8 W/m/sup 2/ /sup 0/C for all black chrome/metal surfaces with the highest being 8.4 W/m/sup 2/ /sup 0/C for the black paint/metal sample.

Lampert, C.M.; Washburn, J.

1978-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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261

Thyroid absorbed dose for people at Rongelap, Utirik, and Sifo on March 1, 1954  

Science Conference Proceedings (OSTI)

A study was undertaken to reexamine thyroid absorbed dose estimates for people accidentally exposed to fallout at Rongelap, Sifo, and Utirik Islands from the Pacific weapon test known as Operation Castle BRAVO. The study included: (1) reevaluation of radiochemical analysis, to relate results from pooled urine to intake, retention, and excretion functions; (2) analysis of neutron-irradiation studies of archival soil samples, to estimate areal activities of the iodine isotopes; (3) analysis of source term, weather data, and meteorological functions used in predicting atmospheric diffusion and fallout deposition, to estimate airborne concentrations of the iodine isotopes; and (4) reevaluation of radioactive fallout, which contaminated a Japanese fishing vessel in the vicinity of Rongelap Island on March 1, 1954, to determine fallout components. The conclusions of the acute exposure study were that the population mean thyroid absorbed doses were 21 gray (2100 rad) at Rongelap, 6.7 gray (670 rad) at Sifo, and 2.8 gray (280 rad) at Utirik. The overall thyroid cancer risk we estimated was in agreement with results published on the Japanese exposed at Nagasaki and Hiroshima. We now postulate that the major route for intake of fallout was by direct ingestion of food prepared and consumed outdoors. 66 refs., 13 figs., 25 tabs.

Lessard, E.T.; Miltenberger, R.P.; Conrad, R.A.; Musoline, S.V.; Naidu, J.R.; Moorthy, A.; Schopfer, C.J.

1985-03-01T23:59:59.000Z

262

Proposed plans for the use of soluble nuclear absorbers at the Idaho Chemical Processing Plant  

SciTech Connect

Soluble neutron absorbers are proposed for criticality safety control in future processes at the Idaho Chemical Processing Plant. Solutions of neutron poisons have been used in the past for criticality control in processing various reactor fuels. No problems were encountered in the safe use of the neutron poisons although dissolution of different types of fuel occasionally required reevaluation of the poison concentrations. Proposed plans include the uses of soluble neutron poisons in the Rover fuel dissolver, the Fluorinel dissolver, and in increased concentrations in the electrolytic dissolver. These proposals are presented and the criticality safety aspects are discussed. The criticality safety of the Rover Fuels Processing Facility is assured by means of engineering design, soluble nuclear poison (boron), and administrative controls. Accumulation of a critical mass in the Fluorinel dissolver is prevented by positive identification of fuel units, administrative controls, procedures, and design of equipment to preclude double batching. The electrolytic dissolution facility is an existing facility at the ICPP for dissolution of stainless steel fuels. Gadolinium is used as a soluble neutron absorber in the nitric acid dissolving reagent and the cooling system. Stainless steel fuels planned for processing in the future will require reevaluation and adjustment of the gadolinium concentration to retain adequate criticality safety. Equipment design, administrative controls, sampling, and procedures are used to assure criticality safety.

Lee, J.L.

1978-01-01T23:59:59.000Z

263

The spatial distributions of cooling gas and intrinsic X-ray absorbing material in cooling flows  

E-Print Network (OSTI)

We present the results from a study of the spatial distributions of cooling gas and intrinsic X-ray absorbing material in a sample of nearby, X-ray bright cooling flow clusters observed with the Position Sensitive Proportional Counter (PSPC) on ROSAT. Our method of analysis employs X-ray colour profiles, formed from ratios of the surface brightness profiles of the clusters in selected energy bands, and an adapted version of the deprojection code of Fabian et al. (1981). We show that all of the cooling flow clusters in our sample exhibit significant central concentrations of cooling gas. At larger radii the clusters appear approximately isothermal. In detail, the spatial distributions and emissivity of the cooling material are shown to be in excellent agreement with the predictions from the deprojection code, and can be used to constrain the ages of the cooling flows. The X-ray colour profiles also indicate substantial levels of intrinsic X-ray absorption in the clusters. The intrinsic absorption increases with decreasing radius, and is confined to the regions occupied by the cooling flows. We explore a range of likely spatial distributions for the absorbing gas and discuss the complexities

unknown authors

2008-01-01T23:59:59.000Z

264

Monte Carlo Assessments of Absorbed Doses to the Hands of Radiopharmaceutical Workers Due to Photon Emitters  

SciTech Connect

This paper describes the characterization of radiation doses to the hands of nuclear medicine technicians resulting from the handling of radiopharmaceuticals. Radiation monitoring using ring dosimeters indicates that finger dosimeters that are used to show compliance with applicable regulations may overestimate or underestimate radiation doses to the skin depending on the nature of the particular procedure and the radionuclide being handled. To better understand the parameters governing the absorbed dose distributions, a detailed model of the hands was created and used in Monte Carlo simulations of selected nuclear medicine procedures. Simulations of realistic configurations typical for workers handling radiopharmaceuticals were performedfor a range of energies of the source photons. The lack of charged-particle equilibrium necessitated full photon-electron coupled transport calculations. The results show that the dose to different regions of the fingers can differ substantially from dosimeter readings when dosimeters are located at the base of the finger. We tried to identify consistent patterns that relate the actual dose to the dosimeter readings. These patterns depend on the specific work conditions and can be used to better assess the absorbed dose to different regions of the exposed skin.

Ilas, Dan [ORNL; Eckerman, Keith F [ORNL; Karagiannis, Harriet [ORNL

2009-01-01T23:59:59.000Z

265

ATR LEU Monolithic Foil-Type Fuel with Integral Cladding Burnable Absorber – Neutronics Performance Evaluation  

SciTech Connect

The Advanced Test Reactor (ATR), currently operating in the United States, is used for material testing at very high neutron fluxes. Powered with highly enriched uranium (HEU), the ATR has a maximum thermal power rating of 250 MWth. Because of the large test volumes located in high flux areas, the ATR is an ideal candidate for assessing the feasibility of converting HEU driven reactor cores to low-enriched uranium (LEU) cores. The burnable absorber - 10B, was added in the inner and outer plates to reduce the initial excess reactivity, and to improve the peak ratio of the inner/outer heat flux. The present work investigates the LEU Monolithic foil-type fuel with 10B Integral Cladding Burnable Absorber (ICBA) design and evaluates the subsequent neutronics operating effects of this proposed fuel designs. The proposed LEU fuel specification in this work is directly related to both the RERTR LEU Development Program and the Advanced Test Reactor (ATR) LEU Conversion Project at Idaho National Laboratory (INL).

Gray Chang

2012-03-01T23:59:59.000Z

266

Reduction of intensity variations on the absorbers of ideal flux concentrators  

SciTech Connect

Although ideal concentrators such as the compound parabolic concentrator have the property that concentrated flux is uniformly distributed on the absorber when the angular acceptance is filled by the incident flux, the instantaneous flux distribution may be very nonuniform when illuminated by a point source. These nonuniformities may be reduced by texturing the surface with small distortions. The necessary reduction of concentrator throughput is small enough to allow such texture concentrators to accommodate a wide range of tolerances in concentrator efficiency and uniformity of the flux distribution. In particular, the suitability of such concentrators for some space applications is discussed. Results of measurements on a test model are presented that demonstrate the effective reduction of flux nonuniformities by reflectors that have been textured by a simple process. Two-stage concentrators for attaining high concentration ratios are shown to distribute the concentrated flux fairly uniformly across the absorber when illuminated by point sources within the field of view. Again the remaining nonuniformities may be removed by texturing the reflecting surfaces (entailing some reduction in concentrator efficiency).

Greenman, P.

1980-08-15T23:59:59.000Z

267

Modeling the horizon-absorbed gravitational flux for equatorial-circular orbits in Kerr spacetime  

E-Print Network (OSTI)

We propose an improved analytical model for the horizon-absorbed gravitational-wave energy flux of a small body in circular orbit in the equatorial plane of a Kerr black hole. Post-Newtonian (PN) theory provides an analytical description of the multipolar components of the absorption flux through Taylor expansions in the orbital frequency. Building on previous work, we construct a mode-by-mode factorization of the absorbed flux whose Taylor expansion agrees with current PN results. This factorized form significantly improves the agreement with numerical results obtained with a frequency-domain Teukolsky code, which evolves through a sequence of circular orbits up to the photon orbit. We perform the comparison between model and numerical data for dimensionless Kerr spins $-0.99 \\leq q \\leq 0.99$ and for frequencies up to the light ring of the Kerr black hole. Our proposed model enforces the presence of a zero in the flux at an orbital frequency equal to the frequency of the horizon, as predicted by perturbation theory. It also reproduces the expected divergence of the flux close to the light ring. Neither of these features are captured by the Taylor-expanded PN flux. Our proposed absorption flux can also help improve models for the inspiral, merger, ringdown of small mass-ratio binary systems.

Andrea Taracchini; Alessandra Buonanno; Scott A. Hughes; Gaurav Khanna

2013-05-09T23:59:59.000Z

268

The Synergism Between Heat and Mass Transfer Additive and Advanced Surfaces in Aqueous LiBr Horizontal Tube Absorbers  

Science Conference Proceedings (OSTI)

Experiments were conducted in a laboratory to investigate the absorption of water vapor into a falling-film of aqueous lithium bromide (LiBr). A mini-absorber test stand was used to test smooth tubes and a variety of advanced tube surfaces placed horizontally in a single-row bundle. The bundle had six copper tubes; each tube had an outside diameter of 15.9-mm and a length of 0.32-m. A unique feature of the stand is its ability to operate continuously and support testing of LiBr brine at mass fractions {ge} 0.62. The test stand can also support testing to study the effect of the failing film mass flow rate, the coolant mass flow rate, the coolant temperature, the absorber pressure and the tube spacing. Manufacturers of absorption chillers add small quantities of a heat and mass transfer additive to improve the performance of the absorbers. The additive causes surface stirring which enhances the transport of absorbate into the bulk of the film. Absorption may also be enhanced with advanced tube surfaces that mechanically induce secondary flows in the falling film without increasing the thickness of the film. Several tube geometry's were identified and tested with the intent of mixing the film and renewing the interface with fresh solution from the tube wall. Testing was completed on a smooth tube and several different externally enhanced tube surfaces. Experiments were conducted over the operating conditions of 6.5 mm Hg absorber pressure, coolant temperatures ranging from 20 to 35 C and LiBr mass fractions ranging from 0.60 through 0.62. Initially the effect of tube spacing was investigated for the smooth tube surface, tested with no heat and mass transfer additive. Test results showed the absorber load and the mass absorbed increased as the tube spacing increased because of the improved wetting of the tube bundle. However, tube spacing was not a critical factor if heat and mass transfer additive was active in the mini-absorber. The additive dramatically affected the hydrodynamics of the falling film and a droplet flow regime was evident for testing at all tube spacings. The mechanical mixing of the advanced surfaces increased the mass transfer to about 75% of that observed on a smooth tube bundle, tested with heat and mass transfer additive. Testing with heat and mass transfer additive and advanced surfaces demonstrated a synergistic effect which doubled the mass absorbed from that observed with only the advanced surface. The overall film-side heat transfer coefficient for the advanced tube bundles doubled with the addition of 500-wppm of 2-ethyl-1- hexanol.

Miller, W.A.

1999-03-24T23:59:59.000Z

269

Comprehensive energy-management program. Hybrid photovoltaic/thermal absorber. Annual report, September 1, 1980-December 31, 1981  

DOE Green Energy (OSTI)

Research work was done during the reporting period on the two-part research program: (A) to improve energy conservation through increased unit and system efficiencies, energy management, and system optimization, and (B) to develop a novel, low-cost hybrid photovoltaic/thermal absorber. Performance tests were conducted on all the boilers and chillers on campus. Several corrective measures were indicated and implemented. A detailed survey of energy use by functions and consumption/demand study has been in progress. A preliminary computer simulation model of the entire campus has been developed and made operational. It has been demonstrated both analytically and experimentally that the reradiation losses from the absorber can be reduced significantly by utilizing a light-pipe absorber. Two paraboloidal dishes, one of 6 ft diameter and the other of 20 ft diameter have been utilized. Collector efficiencies have been measured at coolant outlet temperatures up to 282/sup 0/C with a square light-pipe absorber and with 6 ft diameter concentrator. Laser ray testing was conducted on both the 6 ft and 20 ft diameter concentrators. Design of the total energy absorber has been completed.

Kumar, G. N.; Sellers, J. P.; Dybczak, Z. W.

1981-12-01T23:59:59.000Z

270

Page not found | Department of Energy  

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

61 - 3170 of 31,917 results. 61 - 3170 of 31,917 results. Download CX-004118: Categorical Exclusion Determination Rhode Island Commercial and Industrial Energy Efficiency Initiative CX(s) Applied: A9, B5.1 Date: 09/30/2010 Location(s): Rhode Island Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-004118-categorical-exclusion-determination Download CX-003442: Categorical Exclusion Determination Post-Combustion Carbon Dioxide Capture for Existing Post-Combustion Boilers by Self-Concentrating Amine Absorbent CX(s) Applied: B3.6 Date: 08/16/2010 Location(s): Lexington, Kentucky Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-003442-categorical-exclusion-determination

271

RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber: Preprint  

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

RANS Simulation of the Heave RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber Preprint Y. Yu and Y. Li To be presented at ISOPE 2011 Maui, Hawaii June 19-24, 2011 Conference Paper NREL/CP-5000-50980 March 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty,

272

Advanced Reflector and Absorber Materials (Fact Sheet), Thermal Systems Group: CSP Capabilities (TSG)  

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

Ideally, we want reflector Ideally, we want reflector materials in a CSP plant to last 20 to 30 years and cost less than $2.50 per square foot (or $25 per square meter) to manufacture. Highly specular mirrors should have better than 95% reflectance into a 4-milliradian full-cone angle and should resist soiling in all outdoor conditions. NREL focuses on achieving these goals by creating and applying testing procedures that accurately predict the performance and lifetime of materials. Some testing is relatively brief, lasting several weeks, whereas other processes may take several months or even years. We evaluate the potential of reflector (mirror) and absorber (receiver) materials in the three areas described below, working with our industry partners to develop technologies that will

273

Method for absorbing hydrogen using an oxidation resisant organic hydrogen getter  

DOE Patents (OSTI)

A composition for removing hydrogen from an atmosphere, comprising a mixture of a polyphenyl ether and a hydrogenation catalyst, preferably a precious metal catalyst, and most preferably platinum, is disclosed. This composition is stable in the presence of oxygen, will not polymerize or degrade upon exposure to temperatures in excess of 200.degree. C., or prolonged exposure to temperatures in the range of 100-300.degree. C. Moreover, these novel hydrogen getter materials can be used to efficiently remove hydrogen from mixtures of hydrogen/inert gas (e.g., He, Ar, N.sub.2), hydrogen/ammonia atmospheres, such as may be encountered in heat exchangers, and hydrogen/carbon dioxide atmospheres. Water vapor and common atmospheric gases have no adverse effect on the ability of these getter materials to absorb hydrogen.

Shepodd, Timothy J. (Livermore, CA); Buffleben, George M. (Tracy, CA)

2009-02-03T23:59:59.000Z

274

Theory of ultrafast heterogeneous electron transfer: Contributions of direct charge transfer excitations to the absorbance  

Science Conference Proceedings (OSTI)

Absorption spectra related to heterogeneous electron transfer are analyzed with the focus on direct charge transfer transition from the surface attached molecule into the semiconductor band states. The computations are based on a model of reduced dimensionality with a single intramolecular vibrational coordinate but a complete account for the continuum of conduction band states. The applicability of this model to perylene on TiO{sub 2} has been demonstrated in a series of earlier papers. Here, based on a time-dependent formulation, the absorbance is calculated with the inclusion of charge transfer excitations. A broad parameter set inspired by the perylene TiO{sub 2} systems is considered. In particular, the description generalizes the Fano effect to heterogeneous electron transfer reactions. Preliminary simulations of measured spectra are presented for perylene-catechol attached to TiO{sub 2}.

Wang, Luxia; Willig, Frank; May, Volkhard [Department of Physics, University of Science and Technology Beijing, Xueyuan Road 30, Haidian District, 100083 Beijing (China); Fritz-Haber-Institut der MPG, Faradayweg 4-6, 14195 Berlin (Germany); Institut fuer Physik, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, D-12489 Berlin (Germany)

2007-04-07T23:59:59.000Z

275

Analysis of an improved solar-powered cooling system utilizing open-cycle absorbent regeneration  

DOE Green Energy (OSTI)

A solar-powered cooling system which promises high system C.O.P.'s and low collector costs is analyzed. It consists of a desiccant and an absorption cooling system operating in series to both dry and cool the air. A common solution of lithium chloride is used as the absorbant. The lithium chloride solution is regenerated by evaporating the excess water to the atmosphere in an ''open'' collector. This collector consists merely of a blackened flat surface. The weak solution of lithium chloride is introduced at the top of the collector and then flows by gravity over the entire collector surface where it is subsequently heated and dried. The daily performance of this combined system is compared by computer simulation to that of either an absorption or desiccant system alone using actual weather data for five typical U.S. cities. The performance improvement of the combined system ranged from 25% to 95%, the greatest improvement being for humid, windy conditions.

Collier, R.K.

1978-01-01T23:59:59.000Z

276

Unit spectra of K-theory from strongly self-absorbing C*-algebras.  

E-Print Network (OSTI)

We give an operator algebraic model for the first group of the unit spectrum $gl_1(KU)$ of complex topological K-theory, i.e. $[X, BGL_1(KU)]$, by bundles of stabilized infinite Cuntz C*-algebras $O_{\\infty} \\otimes \\K$. We develop similar models for the localizations of $KU$ at a prime $p$ and away from $p$. Our work is based on the $\\mathcal{I}$-monoid model for the units of $K$-theory by Sagave and Schlichtkrull and it was motivated by the goal of finding connections between the infinite loop space structure of the classifying space of the automorphism group of stabilized strongly self-absorbing C*-algebras that arose in our generalization of the Dixmier-Douady theory and classical spectra from algebraic topology.

Marius Dadarlat; Ulrich Pennig

277

Experimental Investigation of the Power Generation Performance of Floating-Point Absorber Wave Energy Systems: Preprint  

DOE Green Energy (OSTI)

The extraction of energy from ocean waves has gained interest in recent years. The floating-point absorber (FPA) is one of the most promising devices among a wide variety of wave energy conversion technologies. Early theoretical studies mainly focused on understanding the hydrodynamics of the system and on predicting the maximum power that could be extracted by a heaving body. These studies evolve from the investigation of floating-body interactions in offshore engineering and naval architecture disciplines. To our best knowledge, no systematic study has been reported about the investigation of the power generation performance of an FPA with a close-to-commercial design. A series of experimental tests was conducted to investigate the power extraction performance of an FPA system.

Li, Y.; Yu, Y.; Epler, J.; Previsic, M.

2012-04-01T23:59:59.000Z

278

An energy absorbing far-field boundary condition for the elastic wave equation  

SciTech Connect

The authors present an energy absorbing non-reflecting boundary condition of Clayton-Engquist type for the elastic wave equation together with a discretization which is stable for any ratio of compressional to shear wave speed. They prove stability for a second order accurate finite-difference discretization of the elastic wave equation in three space dimensions together with a discretization of the proposed non-reflecting boundary condition. The stability proof is based on a discrete energy estimate and is valid for heterogeneous materials. The proof includes all six boundaries of the computational domain where special discretizations are needed at the edges and corners. The stability proof holds also when a free surface boundary condition is imposed on some sides of the computational domain.

Petersson, N A; Sjogreen, B

2008-07-15T23:59:59.000Z

279

CO2 Capture Options for an Existing Coal Fired Power Plant: O2/CO2 Recycle Combustion vs. Amine Scrubbing  

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

OPTIONS FOR AN EXISTING COAL FIRED POWER PLANT: OPTIONS FOR AN EXISTING COAL FIRED POWER PLANT: O 2 /CO 2 RECYCLE COMBUSTION vs. AMINE SCRUBBING D. J. Singh (djsingh@uwaterloo.ca; +001-519-496-2064) E. Croiset 1 (ecroiset@uwaterloo.ca;+001-519-888-4567x6472) P.L. Douglas (pdouglas@uwaterloo.ca; +001-519-888-4567x2913) Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1 M.A. Douglas (madougla@nrcan.gc.ca; +001-613 996-2761) CANMET Energy Technology Centre, Natural Resources Canada, 1 Haanel Dr., Nepean, Ontario, Canada, K1A 1M1 Abstract The existing fleet of modern pulverized coal fired power plants represents an opportunity to achieve significant greenhouse gas (GHG) emissions in the coming years providing efficient and economical CO 2 capture technologies are available for retrofit.

280

Evaluation of a Primary Amine-Functionalized Ion-Exchange Resin for CO{sub 2} Capture  

SciTech Connect

A primary amine-functionalized polymeric ion-exchange resin (Lewatit VP OC 1065, Lanxess) was evaluated for use in CO{sub 2} capture applications. The polymeric resin was characterized by SEM, DRIFTS-IR, N{sub 2} adsorption isotherms, and packed bed sorption measurements to determine some of the characteristic properties of the resin. Capture capacities ranging from 1.85 to 1.15 mol CO{sub 2}/kg sorbent were obtained in a packed bed reactor exposed to 10 vol % CO{sub 2} in N{sub 2} at adsorption temperatures ranging from 30 to 70 °C. The capture capacity of the resin was stable over 18 adsorption/regeneration cycles. The resin was evaluated through thermogravimetric analysis to have a low moisture adsorption (1.5 mol H{sub 2}O/kg sorbent). It is possible to completely regenerate the resin under 1 atm of CO{sub 2} at 200 °C.

Alesi, W. Richard; Kitchin, John R.

2012-05-16T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Synthesis and reactivity of molybdenum and tungsten bis(dinitrogen) complexes supported by diphosphine chelates containing pendant amines  

SciTech Connect

In this study, we report the synthesis and characterization of molybdenum bis(dinitrogen) complexes supported by two PNP diphosphine ligands, Mo(N{sub 2}){sub 2}(PNP){sub 2}; PNP = [(R{sub 2}PCH{sub 2}){sub 2}N(R'), R = Et (ethyl), Ph (phenyl); R'= Me (methyl), Bn (benzyl)], and a series of tungsten bis(dinitrogen) complexes containing one or two PNP ligands, W(N{sub 2}){sub 2}(dppe)(PNP) and W(N{sub 2}){sub 2}(PNP){sub 2}, respectively, and the analogues complexes without pendant amines for comparison. These Mo- and W-N{sub 2} complexes were characterized by NMR, IR, spectroscopy, cyclic voltammetry and structurally characterized by X-ray crystallography. In addition, reactivity of the complexes with CO is described.

Weiss, Charles J.; Groves, Amy N.; Mock, Michael T.; Dougherty, William G.; Kassel, W. S.; Helm, Monte L.; DuBois, Daniel L.; Bullock, R. Morris

2012-04-30T23:59:59.000Z

282

Aging behavior of polymeric solar absorber materials - Part 2: Commodity plastics  

SciTech Connect

In this series of two papers, various polymeric materials are investigated as to their potential applicability as absorber materials for solar thermal collectors. While Part 1 of this paper series deals with the aging behavior of engineering plastics, including two amorphous polymers (PPE + PS) and (PC) and two semi-crystalline polymers (two types of PA12), the present Part 2 treats the aging behavior of semi-crystalline so-called ''commodity'' plastics (two types of crosslinked polyethylene (PE-X) and two types of polypropylene (PP)). As in Part 1, the focus of the investigation is to study the aging behavior of these materials under maximum operating conditions (80 C in water up to 16,000 h) and stagnation conditions (140 C in air up to 500 h) typical for northern climate. The materials supplied or produced as polymer films were first characterized in the unaged state and then for different states of aging by differential scanning calorimetry (DSC), by size exclusion chromatography (SEC) and by mechanical tensile tests. DSC was applied primarily to obtain information on physical aging phenomena, whereas SEC analysis was used to characterize chemical degradation of the materials. In addition, physical and chemical aging were both analyzed via the small and large strain mechanical behavior. Comparing the two aging conditions in hot air and hot water, a rather stable mechanical performance profile was found for both PP types over the investigated aging time, which was interpreted in terms of competing physical and chemical aging mechanisms. Analogously such competing mechanisms were also inferred for one of the PE-X materials, while the other exhibited substantial degradation in terms of strain-to-break values for both aging conditions. In principle, both PP and PE-X are promising candidates for black absorber applications in northern climates if proper measures against overheating are taken and when adequately modified. (author)

Kahlen, S. [Polymer Competence Center Leoben GmbH, Roseggerstrasse 12, Leoben 8700 (Austria); Wallner, G.M.; Lang, R.W. [Institute for Polymeric Materials and Testing, University of Linz, Altenbergerstrasse 69, Linz 4040 (Austria)

2010-09-15T23:59:59.000Z

283

Scientists Identify New Quaternary Materials for Solar Cell Absorbers (Fact Sheet), NREL Highlights, Science  

DOE Green Energy (OSTI)

Research provides insight for exploring use of earth-abundant quaternary semiconductors for large-scale solar cell applications. For large-scale solar electricity generation, it is critical to find new material that is Earth abundant and easily manufactured. Previous experimental studies suggest that Cu{sub 2}ZnSnS{sub 4} could be a strong candidate absorber materials for large-scale thin-film solar cells due to its optimal bandgap, high adsorption coefficient, and ease of synthesis. However, due to the complicated nature of the quaternary compound, it is unclear whether other quaternary compounds have physical properties suitable for solar cell application. Researchers at the National Renewable Energy Laboratory (NREL), Fudan University, and University College London have performed systematic searches of quaternary semiconductors using a sequential cation mutation method in which the material properties of the quaternary compounds can be derived and understood through the evolution from the binary, to ternary, and to quaternary compounds. The searches revealed that in addition to Cu{sub 2}ZnSnS{sub 4}, Cu{sub 2}ZnGeSe{sub 4} and Cu{sub 2}ZnSnSe{sub 4} are also suitable quaternary materials for solar cell absorbers. Through the extensive study of defect and alloy properties of these materials, the researchers propose that to maximize solar cell performance, growth of Cu{sub 2}ZnSnS{sub 4} under Cu-poor/Zn-rich conditions will be optimal and the formation of Cu{sub 2}ZnSn(S,Se){sub 4} alloy will be beneficial in improving solar cell performance.

Not Available

2011-10-01T23:59:59.000Z

284

Synthesis of UV-absorbing carrier ampholytes for characterization of isoelectric membranes  

E-Print Network (OSTI)

Isoelectric focusing is one of the most important techniques in protein separations. Preparative-scale isoelectric separations often use buffering membranes (isoelectric membranes), but there are no good known methods for the characterization of their pI values. Therefore, UV-absorbing carrier ampholyte mixtures (UVCAs) have been synthesized, analytically characterized, and utilized for the characterization of the pI value of a buffering membrane. To synthesize the UVCAs, addition of a UV-absorbing electrophile, 3-phenoxypropyl bromide (PhOPrBr), to a pentaethylenehexamine (PEHA) carrier ampholyte backbone, resulted in an intermediate that was subsequently reacted with increasing amounts of acrylic acid (up to 8 equiv) and itaconic acid (up to 2 equiv) via Michael�s addition. The intermediates and final products were characterized by 1H-NMR and full-column imaging capillary isoelectric focusing techniques. An optimal blended mixture of selected UVCAs was first desalted and purified by isoelectric trapping and its composition verified by full-column imaging isoelectric focusing. The mixture of UVCAs possessed a broad pI distribution from approximately pH 3 � 10. By isoelectric trapping, the mixture was separated into two subfractions with a polyacrylamide-based isoelectric membrane of known pI as the separation membrane and poly(vinyl) alcohol-based buffering membranes as the restriction membranes. The pI of the most basic UV-active carrier ampholyte in the anodic fraction was determined to be 4.4 and the pI of the most acidic UV-active carrier ampholyte in the cathodic fraction was determined to be 4.4, confirming that the pH of the polyacrylamide-based isoelectric membrane was pH 4.4.

Hwang, Ann

2005-08-01T23:59:59.000Z

285

Stability and Electronic Structures of CuxS Solar Cell Absorbers: Preprint  

DOE Green Energy (OSTI)

Cu{sub x}S is one of the most promising solar cell absorber materials that has the potential to replace the leading thin-film solar cell material Cu(In,Ga)Se{sub 2} for high efficiency and low cost. In the past, solar cells based on Cu{sub x}S have reached efficiency as high as 10%, but it also suffers serious stability issues. To further improve its efficiency and especially the stability, it is important to understand the stability and electronic structure of Cu{sub x}S. However, due to the complexity of their crystal structures, no systematic theoretical studies have been carried out to understand the stability and electronic structure of the Cu{sub x}S systems. In this work, using first-principles method, we have systematically studied the crystal and electronic band structures of Cu{sub x}S (1.25 < x {le} 2). For Cu{sub 2}S, we find that all the three chalcocite phases, i.e., the low-chalcocite, the high-chalcocite, and the cubic-chalcocite phases, have direct bandgaps around 1.3-1.5 eV, with the low-chalcocite being the most stable one. However, Cu vacancies can form spontaneously in these compounds, causing instability of Cu{sub 2}S. We find that under Cu-rich condition, the anilite Cu{sub 1.75}S is the most stable structure. It has a predicted bandgap of 1.4 eV and could be a promising solar cell absorber.

Wei, S. H.; Xu, Q.; Huang, B.; Zhao, Y.; Yan, Y.; Noufi, R.

2012-07-01T23:59:59.000Z

286

Mode-locking of solid-state lasers by single-walled carbon-nanotube based saturable absorbers  

Science Conference Proceedings (OSTI)

Universal use of single-walled carbon-nanotube based saturable absorber devices for mode-locking of bulk solid-state lasers between 0.8 and 2 {mu}m is discussed. The advantages in comparison to semiconductor saturable absorbers are emphasised. We briefly describe the manufacturing process and the essential optical properties, and review experimental results obtained with various types of femtosecond and picosecond solid-state lasers in the steady-state regime. We also demonstrate that a single hybrid saturable absorber used in transmission can be used to mode-lock four different types of lasers operating between 1 and 2 {mu}m. (control of laser radiation parameters)

Rotermund, F; Cho, W B; Choi, S Y; Baek, I H; Yim, J H; Lee, S; Schmidt, A; Steinmeyer, G; Griebner, U; Yeom, D I; Kim, K; Petrov, V

2012-08-31T23:59:59.000Z

287

Candidate chemical systems for air cooled solar powered, absorption air conditioner design. Part I. Organic absorbent systems  

DOE Green Energy (OSTI)

All the available experimental evidence suggests that the optimum ''organic'' absorbent/refrigerant combination would be a methane derivative with a single hydrogen atom with chlorine and fluorine atoms in the other sites, as refrigerant. This would be hydrogen bonded to an absorbent molecule containing the group =NC/sup -/O, with the substituent groups being such that no steric hindrance took place. Cycle analyses showed that the ratio of internal heat transfer to cooling would be large, probably impractically so in view of the high coefficient of performance needed for solar driven cooling and the additional handicap of heat rejection to the atmosphere. A more promising approach would be to reduce the internal heat transfer per unit of space cooling by selecting a refrigerant with a high latent heat of vaporization and selecting an absorbent with suitable properties.

Biermann, W.J.

289

Fuel Reliability Program: Post-Irradiation Examination and Testing of High-Fluence Control Rod Silver-Indium-Cadmium Absorber from t he Kernkraftwerk Obrigheim Reactor  

Science Conference Proceedings (OSTI)

Within a project sponsored by the Electric Power Research Institute (EPRI), one control rod absorber silver-indium-cadmium (AgInCd) specimen, KWO395, irradiated in Kernkraftwerk Obrigheim (KWO) and one control rod absorber specimen, R035/F9, irradiated in Ringhals 2 have been examined in the hot cell laboratory at Studsvik. The objective of the examinations was to characterize the absorber material and investigate its physical, chemical, and microstructural changes due to high neutron fluence/exposure us...

2011-09-16T23:59:59.000Z

290

Safeguards Verification Measurements using Laser Ablation, Absorbance Ratio Spectrometry in Gaseous Centrifuge Enrichment Plants  

Science Conference Proceedings (OSTI)

Laser Ablation Absorbance Ratio Spectrometry (LAARS) is a new verification measurement technology under development at the US Department of Energy’s (DOE) Pacific Northwest National Laboratory (PNNL). LAARS uses three lasers to ablate and then measure the relative isotopic abundance of uranium compounds. An ablation laser is tightly focused on uranium-bearing solids producing a small plume containing uranium atoms. Two collinear wavelength-tuned spectrometry lasers transit through the plume and the absorbance of U-235 and U-238 isotopes are measured to determine U-235 enrichment. The measurement has high relative precision and detection limits approaching the femtogram range for uranium. It is independent of chemical form and degree of dilution with nuisance dust and other materials. High speed sample scanning and pinpoint characterization allow measurements on millions of particles/hour to detect and analyze the enrichment of trace uranium in samples. The spectrometer is assembled using commercially available components at comparatively low cost, and features a compact and low power design. Future designs can be engineered for reliable, autonomous deployment within an industrial plant environment. Two specific applications of the spectrometer are under development: 1) automated unattended aerosol sampling and analysis and 2) on-site small sample destructive assay measurement. The two applications propose game-changing technological advances in gaseous centrifuge enrichment plant (GCEP) safeguards verification. The aerosol measurement instrument, LAARS-environmental sampling (ES), collects aerosol particles from the plant environment in a purpose-built rotating drum impactor and then uses LAARS-ES to quickly scan the surface of the impactor to measure the enrichments of the captured particles. The current approach to plant misuse detection involves swipe sampling and offsite analysis. Though this approach is very robust it generally requires several months to obtain results from a given sample collection. The destructive assay instrument, LAARS-destructive assay (DA), uses a simple purpose-built fixture with a sampling planchet to collect adsorbed UF6 gas from a cylinder valve or from a process line tap or pigtail. A portable LAARS-DA instrument scans the microgram quantity of uranium collected on the planchet and the assay of the uranium is measured to ~0.15% relative precision. Currently, destructive assay samples for bias defect measurements are collected in small sample cylinders for offsite mass spectrometry measurement.

Anheier, Norman C.; Cannon, Bret D.; Qiao, Hong (Amy); Phillips, Jon R.

2012-07-01T23:59:59.000Z

291

forth through the heat exchangers, thereby phasing the rates at which heat is absorbed and rejected from  

E-Print Network (OSTI)

#12;forth through the heat exchangers, thereby phasing the rates at which heat is absorbed balance as shown in Fig. 3 still indi- cated a greater heat loss to the engine coolant than predicted. This was caused by excessive heat leak- age from the hot to the cold working spaces, primarily by the flow leakage

Oak Ridge National Laboratory

292

Satellite observations of the seasonal cycles of absorbing aerosols in Africa related to the monsoon rainfall, 1995e2008  

E-Print Network (OSTI)

to the monsoon rainfall, 1995e2008 M. de Graaf a,*, L.G. Tilstra a , I. Aben b , P. Stammes a a Royal Netherlands: Absorbing aerosols Remote sensing African monsoon Precipitation a b s t r a c t The link between the African Monsoon systems and aerosol loading in Africa is studied using multi-year satellite observations of UV

Tilstra, Gijsbert

293

ON THE SIGNIFICANCE OF THE EXCESS NUMBER OF STRONG Mg II ABSORBERS OBSERVED TOWARD GAMMA-RAY BURSTS  

SciTech Connect

The number of strong (equivalent width >1 A) Mg II absorbers observed toward gamma-ray bursts (GRBs) has been found to be statistically larger than the number of strong absorbers toward quasi-stellar objects (QSOs). We formalize this 'Mg II problem' and present a detailed explanation of the statistical tools required to assess the significance of the discrepancy. We find that the problem exists at the 4{sigma} level for GRBs with high-resolution spectra. It has been suggested that the discrepancy can be resolved by the combination of a dust obscuration bias toward QSOs, and a strong gravitational lensing bias toward GRBs. We investigate one of the two most probable lensed GRBs that we presented in our previous work (GRB020405) and find that it is not strongly gravitationally lensed, constraining the percentage of lensed GRBs to be <35% (2{sigma}). Dust obscuration of QSOs has been estimated to be a significant effect with dusty Mg II systems removing {approx}20% of absorbed objects from flux-limited QSO samples. We find that if {approx}30% of the strong Mg II systems toward QSOs are missing from the observed samples, then GRBs and QSOs would have comparable numbers of absorbers per unit redshift. Thus, strong gravitational lensing bias is likely to make only a modest contribution to solving the Mg II problem. However, if the dust obscuration bias has been slightly underestimated, the Mg II problem would no longer persist.

Rapoport, Sharon; Onken, Christopher A.; Schmidt, Brian P. [Research School of Astronomy and Astrophysics, The Australian National University, Canberra 2611 (Australia)] [Research School of Astronomy and Astrophysics, The Australian National University, Canberra 2611 (Australia); Wyithe, J. Stuart B. [School of Physics, University of Melbourne, Parkville, Victoria 3010 (Australia)] [School of Physics, University of Melbourne, Parkville, Victoria 3010 (Australia); Thygesen, Anders O. [Zentrum fuer Astronomie der Universitaet Heidelberg, Landessternwarte, Koenigstuhl 12, D-69117 Heidelberg (Germany)] [Zentrum fuer Astronomie der Universitaet Heidelberg, Landessternwarte, Koenigstuhl 12, D-69117 Heidelberg (Germany)

2013-03-20T23:59:59.000Z

294

Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump  

DOE Patents (OSTI)

Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use, as the heat transfer medium, the working fluid of the absorption system taken from the generator at a location where the working fluid has a rich liquor concentration.

Phillips, Benjamin A. (Benton Harbor, MI); Zawacki, Thomas S. (St. Joseph, MI)

1998-07-21T23:59:59.000Z

295

Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump  

DOE Patents (OSTI)

Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use the working solution of the absorption system for the heat transfer medium. A combination of weak and rich liquor working solution is used as the heat transfer medium.

Phillips, Benjamin A. (Benton Harbor, MI); Zawacki, Thomas S. (St. Joseph, MI)

1996-12-03T23:59:59.000Z

296

Ultra High Efficiency Thermo-Photovoltaic Solar Cells Using Metallic Photonic Crystals As Intermediate Absorber and Emitter  

E-Print Network (OSTI)

, a material with a high melting point, since many solar thermal applications, especially solar thermal photovolatics,6,7 require absorbers that can withstand high temperatures. While there is significant amount-difference time-domain method.15 To describe the effect of material dispersion and absorption in the time

Nur, Amos

297

Studying trends in biomass burning aerosol using the Absorbing Aerosol Index derived from GOME, SCIAMACHY, and GOME-2  

E-Print Network (OSTI)

Studying trends in biomass burning aerosol using the Absorbing Aerosol Index derived from GOME burning events. It is found that the regional AAI data follow the regional tropospheric NO2 data well sensitive to desert dust aerosols (DDA) and biomass burning aerosols (BBA). See Figure 1. The AAI

Tilstra, Gijsbert

298

Results of the Workshop on Microwave-Absorbing Materials for Accelerators (MAMA): A Personal View  

SciTech Connect

The first workshop on the properties and uses of special materials for absorption of microwaves in particle accelerators was held at the Continuous Electron Beam Accelerator Facility (CEBAF) in Newport News, February 22-24, 1993. The meeting's purpose was to review the advances of ceramic and materials science and to describe the accelerator projects the success of which strongly depends on the existence and availability of microwave-absorbing materials with special characteristics. Scientists from various branches of physics, materials science, microwave engineering, accelerator physics and from national and international laboratories, from universities and industries participated in this gathering. This interdisciplinary meeting brought new people and new ideas together which in the future will bloom into better understanding of general materials and of physical processes and eventually to collaborative efforts to design and produce custom made materials. This paper describes the major topics covered in the workshop and is a personal elaboration of the author on the future possibilities opened by this interaction.

I.E. Campisi

1993-04-01T23:59:59.000Z

299

Calculation of the cumulative reaction probability via a discrete variable representation with absorbing boundary conditions  

SciTech Connect

A new method is suggested for the calculation of the microcanonical cumulative reaction probability {ital via} flux autocorrelation relations. The Hamiltonian and the flux operators are computed in a discrete variable representation (DVR) and a well-behaved representation for the Green's operator, {ital G}({ital E}{sup +}), is obtained by imposing absorbing boundary conditions (ABC). Applications to a one-dimensional-model problem and to the collinear H+H{sub 2} reaction show that the DVR-ABC scheme provides a very efficient method for the {ital direct} calculation of the microcanonical probability, circumventing the need to compute the state-to-state dynamics. Our results indicate that the cumulative reaction probability can be calculated to a high accuracy using a rather small number of DVR points, confined to the vicinity of the transition state. Only limited information regarding the potential-energy surface is therefore required, suggesting that this method would be applicable also to higher dimensionality problems, for which the complete potential surface is often unknown.

Seideman, T.; Miller, W.H. (Department of Chemistry, University of California, Berkeley, California 94720 (United States))

1992-03-15T23:59:59.000Z

300

Amine derivatives of thio-bis-lactone acids in combination with coadditive hydrocarbons are flow improvers for middle distillate fuel oils  

Science Conference Proceedings (OSTI)

Amine salts, amino acids, amino acid salts bis-amides and imides of oil-soluble thio-bis-(C12-50 alkyl lactone acid), e.g. a secondary hydrogenated tallow amide of dithio-bis-(C16-c24 alkyl lactone carboxylic acid), are useful in combination with a coadditive hydrocarbon such as an amorphous hydrocarbon or a hydrogenated polybutadiene in improving the cold flow properties of distillate hydrocarbon oils.

Brois, S.J.; Feldman, N.; Gutierrez, A.

1981-02-17T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

A SPECTROPOLARIMETRIC TEST OF THE STRUCTURE OF THE INTRINSIC ABSORBERS IN THE QUASAR HS 1603+3820  

SciTech Connect

We report the results of a spectropolarimetric observation of the C VI 'mini-broad' absorption line (mini-BAL) in the quasar HS 1603+3820 (z {sub em} = 2.542). The observations were carried out with the FOCAS instrument on the Subaru Telescope and yielded an extremely high polarization sensitivity of {delta}p{approx} 0.1%, at a resolving power of R {approx} 1500. HS 1603+3820 has been the target of a high-resolution spectroscopic monitoring campaign for more than four years, aimed at studying its highly variable C VI mini-BAL profile. Using the monitoring observations in an earlier paper, we were able to narrow down the causes of the variability to the following two scenarios: (1) scattering material of variable optical depth redirecting photons around the absorber and (2) a variable, highly ionized screen between the continuum source and the absorber which modulates the UV continuum incident on the absorber. The observations presented here provide a crucial test of the scattering scenario and lead us to disfavor it because (1) the polarization level is very small (p {approx} 0.6%) throughout the spectrum and (2) the polarization level does not increase across the mini-BAL trough. Thus, the variable screen scenario emerges as our favored explanation of the C VI mini-BAL variability. Our conclusion is bolstered by recent X-ray observations of nearby mini-BAL quasars, which show a rapidly variable soft X-ray continuum that appears to be the result of transmission through an ionized absorber of variable ionization parameter and optical depth.

Misawa, Toru [Cosmic Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Kawabata, Koji S. [Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Eracleous, Michael; Charlton, Jane C. [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Kashikawa, Nobunari, E-mail: misawatr@shinshu-u.ac.j, E-mail: mce@astro.psu.ed, E-mail: charlton@astro.psu.ed, E-mail: kawabtkj@hiroshima-u.ac.j, E-mail: kashik@zone.mtk.nao.ac.j [National Astronomical Observatory, Mitaka, Tokyo 181-8588 (Japan)

2010-08-20T23:59:59.000Z

302

THE PROPERTIES OF TWO LOW-REDSHIFT O VI ABSORBERS AND THEIR ASSOCIATED GALAXIES TOWARD 3C 263 ,  

SciTech Connect

Ultraviolet observations of the QSO 3C 263 (z{sub em} = 0.652) with Cosmic Origins Spectrograph and FUSE reveal O VI absorption systems at z = 0.06342 and 0.14072. WIYN multi-object spectrograph observations provide information about the galaxies associated with the absorbers. The multi-phase system at z = 0.06342 traces cool photoionized gas and warm collisionally ionized gas associated with an L {approx} 0.31 L* compact spiral emission line galaxy with an impact parameter of 63 kpc. The cool photoionized gas in the absorber is well modeled, with log U {approx} -2.6, log N(H) {approx} 17.8, log n(H) {approx} -3.3 and [Si/H] = -0.14 {+-} 0.23. The collisionally ionized gas containing C IV and O VI probably arises in cooling shock-heated transition temperature gas with log T {approx} 5.5. The absorber is likely tracing circumgalactic gas enriched by gas ejected from the spiral emission line galaxy. The simple system at z = 0.14072 only contains O VI and broad and narrow H I. The O VI with b = 33.4 {+-} 11.9 km s{sup -1} is likely associated with the broad H I {lambda}1215 absorption, with b = 86.7 {+-} 15.4 km s{sup -1}. The difference in Doppler parameters implies the detection of a very large column of warm gas with log T = 5.61(+0.16, -0.25), log N(H) = 19.54(+0.26, -0.44), and [O/H] = -1.48 (+0.46, -0.26). This absorber is possibly associated with a 1.6 L* absorption line galaxy with an impact parameter of 617 kpc, although an origin in warm filament gas or in the halo of a fainter galaxy is more likely.

Savage, B. D.; Kim, T.-S.; Wakker, B. P. [Department of Astronomy, University of Wisconsin, Madison, WI 53706 (United States); Keeney, B.; Stocke, J.; Syphers, D. [CASA, University of Colorado, Boulder, CO (United States); Narayanan, A. [Indian Institute of Space Science and Technology, Thiruvananthapuram 695547, Kerala (India)

2012-07-01T23:59:59.000Z

303

Microstructural Characterization of Burnable Absorber Materials Being Evaluated for Application in LEU U-Mo Fuel Plates  

SciTech Connect

The starting microstructure of a fuel plate will impact how it performs during irradiation. As a result, microstructural characterization has been performed on as-fabricated monolithic fuel plates to determine the changes in fuel plate microstructure that may result from changes in fabrication parameters. Particular focus has been given to the fuel plate U-10Mo/Zr and Zr/AA6061 cladding interfaces, since the integrity of these interfaces will play a big role in determining the overall performance of the fuel plate during irradiation. In addition, burnable absorber materials for potential incorporation into monolithic fuel plates have been characterized to identify their as-fabricated microstructures. This information will be important when trying to understand the PIE data from fuel plates with burnable absorbers that are irradiated in future irradiation experiments. This paper will focus on the microstructures observed using optical metallography, X-ray diffraction, and scanning and transmission electron microscopy for monolithic fuel plates exposed to different fabrication parameters and for as-fabricated burnable absorber materials.

J. F. Jue; B. Miller; B. Yao; E. Perez; Y. H. Sohn

2011-03-01T23:59:59.000Z

304

Incorporation of Integral Fuel Burnable Absorbers Boron and Gadolinium into Zirconium-Alloy Fuel Clad Material  

SciTech Connect

Long-lived fuels require the use of higher enrichments of 235U or other fissile materials. Such high levels of fissile material lead to excessive fuel activity at the beginning of life. To counteract this excessive activity, integral fuel burnable absorbers (IFBA) are added to some rods in the fuel assembly. The two commonly used IFBA elements are gadolinium, which is added as gadolinium-oxide to the UO2 powder, and boron, which is applied as a zirconium-diboride coating on the UO2 pellets using plasma spraying or chemical vapor deposition techniques. The incorporation of IFBA into the fuel has to be performed in a nuclear-regulated facility that is physically separated from the main plant. These operations tend to be very costly because of their small volume and can add from 20 to 30% to the manufacturing cost of the fuel. Other manufacturing issues that impact cost and performance are maintaining the correct levels of dosing, the reduction in fuel melting point due to gadolinium-oxide additions, and parasitic neutron absorption at fuel's end-of-life. The goal of the proposed research is to develop an alternative approach that involves incorporation of boron or gadolinium into the outer surface of the fuel cladding material rather than as an additive to the fuel pellets. This paradigm shift will allow for the introduction of the IFBA in a non-nuclear regulated environment and will obviate the necessity of additional handling and processing of the fuel pellets. This could represent significant cost savings and potentially lead to greater reproducibility and control of the burnable fuel in the early stages of the reactor operation. The surface alloying is being performed using the IBEST (Ion Beam Surface Treatment) process developed at Sandia National Laboratories. IBEST involves the delivery of energetic ion beam pulses onto the surface of a material, near-surface melting, and rapid solidification. The non-equilibrium nature of such processing allows for surface alloying well in excess of the thermodynamically dictated solubility limits, an effect that is particularly relevant to this research due to the negligible solubility of boron and gadolinium in zirconium. University of Wisconsin is performing the near surface materials characterization and analysis, aiding Sandia in process optimization, and promoting educational activities. Westinghouse is performing process manufacturability and scale-up analysis and is performing autoclave testing of the surface treated samples. The duration of this NERI project is 2 years, from 9/2002 to 9/2004.

Sridharan, K.; Renk, T.J.; Lahoda, E.J.; Corradini, M.L

2004-12-14T23:59:59.000Z

305

Morphology and water resistance of mixed silane films of bis[3-(triethoxysilyl) propyl]tetrasulfide and bis-[trimethoxysilylpropyl]amine  

Science Conference Proceedings (OSTI)

Functional organosilanes are powerful interface-active agents that find applications as adhesion promoters as well as optical, dielectric and protective coatings. Bis-silanes are of particular interest because they are highly crosslinked leading to very robust films. In almost all applications, the water resistance of the films is a critical performance measure. Here we use neutron reflectivity to address the effect of bridging group on the hydrothermal response of bis-silane films prepared using bis[3-(triethoxysilyl) propyl]tetrasulfide and bis-[trimethoxysilylpropyl]amine. Neat and mixed films are examined as-prepared, after exposure to water vapor and then in the re-dried state. The bridging group is the key factor that controls the morphology and water resistance of silane films. Although bis-sulfur silane is not as condensed as bis-amino silane, bis-sulfur swells less in water because of the hydrophobic nature of bridging group. The reflectivity of bis-sulfur silane film is reversible after room-temperature water conditioning but not at 80 C, indicating chemical alternation of the film at 80 C. The water resistance of mixed silane is roughly that of both components weighted by their volume fraction. But based on the enhanced shrinkage that occurs following water-vapor conditioning of the mixed film, condensation is accelerated in the mixed silane. Regarding the precursor solution, bis-amino silane may act as a catalyst in the hydrolysis of bis-sulfur silane leading to more silanols in the solution and further condensation in the film. Variation in the structure normal to the substrate is also examined by swelling the film with d-nitrobenzene, a non-reacting swelling agent.

Pan, Guirong; Schaefer, Dale W.; van Ooij, Wim J.; Kent, Michael S.; Majewski, Jaroslaw; Yim, Hyun (UCIN); (Sandia); (LANL)

2010-12-03T23:59:59.000Z

306

Optical-Fiber-Based, Time-Resolved Photoluminescence Spectrometer for Thin-Film Absorber Characterization and Analysis of TRPL Data for CdS/CdTe Interface: Preprint  

DOE Green Energy (OSTI)

We describe the design of a time resolved photoluminescence (TRPL) spectrometer for rapid semiconductor absorber characterization. Simplicity and flexibility is achieved by using single optical fiber to deliver laser pulses and to collect photoluminescence. We apply TRPL for characterization of CdS/CdTe absorbers after deposition, CdCl2 treatment, Cu doping, and back contact formation. Data suggest this method could be applied in various stages of PV device processing. Finally, we show how to analyze TRPL data for CdS/CdTe absorbers by considering laser light absorption depth and intermixing at CdS/CdTe interface.

Kuciauskas, D.; Duenow, J. N.; Kanevce, A.; Li, J. V.; Young, M. R.; Dippo, P.; Levi, D. H.

2012-06-01T23:59:59.000Z

307

ATR LEU Fuel and Burnable Absorber Neutronics Performance Optimization by Fuel Meat Thickness Variation  

SciTech Connect

The Advanced Test Reactor (ATR) is a high power density and high neutron flux research reactor operating in the United States. Powered with highly enriched uranium (HEU), the ATR has a maximum thermal power rating of 250 MWth. Because of the large test volumes located in high flux areas, the ATR is an ideal candidate for assessing the feasibility of converting an HEU driven reactor to a low-enriched core. The present work investigates the necessary modifications and evaluates the subsequent operating effects of this conversion. A detailed plate-by-plate MCNP ATR 1/8th core model was developed and validated for a fuel cycle burnup comparison analysis. Using the current HEU U 235 enrichment of 93.0 % as a baseline, an analysis can be performed to determine the low-enriched uranium (LEU) density and U-235 enrichment required in the fuel meat to yield an equivalent K-eff between the HEU core and the LEU core versus effective full power days (EFPD). The MCNP ATR 1/8th core model will be used to optimize the U-235 loading in the LEU core, such that the differences in K-eff and heat flux profile between the HEU and LEU core can be minimized. The depletion methodology MCWO was used to calculate K-eff versus EFPDs in this paper. The MCWO-calculated results for the LEU cases with foil (U-10Mo) types demonstrated adequate excess reactivity such that the K-eff versus EFPDs plot is similar to the reference ATR HEU case. Each HEU fuel element contains 19 fuel plates with a fuel meat thickness of 0.508 mm. In this work, the proposed LEU (U-10Mo) core conversion case with a nominal fuel meat thickness of 0.508 mm and the same U-235 enrichment (15.5 wt%) can be used to optimize the radial heat flux profile by varying the fuel plate thickness from 0.254 to 0.457 mm at the inner 4 fuel plates (1-4) and outer 4 fuel plates (16-19). In addition, a 0.7g of burnable absorber Boron-10 was added in the inner and outer plates to reduce the initial excess reactivity, and the inner/outer heat flux more effectively. The optimized LEU relative radial fission heat flux profile is bounded by the reference ATR HEU case. However, to demonstrate that the LEU core fuel cycle performance can meet the Updated Final Safety Analysis Report (UFSAR) safety requirements, additional studies will be necessary to evaluate and compare safety parameters such as void reactivity and Doppler coefficients, control components worth (outer shim control cylinders, safety rods and regulating rod), and shutdown margins between the HEU and LEU cores.

G. S. Chang

2007-09-01T23:59:59.000Z

308

Oil shale retorting: a correlation of selected infrared absorbance bands with process heating rates and oil yeild  

DOE Green Energy (OSTI)

The measured absorbance for specific infrared bands of Colorado shale oil is correlated with process oil yield and retorting rate. The results show excellent correlations using bands associated with olefinic groups (910, 990 and 1640 cm/sup -1/); analyses were carried out using both quantitative and qualitative infrared methods. No pretreatment of the crude shale oil is required. The results are encouraging enough that, with further development, the method may have potential use as an on-line monitoring technique for various retorting processes.

Evans, R.A.; Campbell, J.H.

1979-01-01T23:59:59.000Z

309

KHALIL AMINE, PH  

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

G. Graczyk G. Graczyk Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 200 Argonne, IL 60439-4837 phone: 630/252-3489, fax: 630/252-4489 e-mail: graczyk@anl.gov Professional Experience ï‚· 2006-Present. Chemist, Inorganic Analysis Technical Lead at Argonne National Laboratory. Application of chemical and analytical expertise to support client program's needs for analytical chemistry support, including interacting with staff analysts, contributing to proposals and work plans, and consulting with clients on specific problems. Lead responsibility for inorganic analytical chemistry methods and services involving elemental analysis, isotopic analysis, and wet-chemistry techniques. ï‚· 1988-2006. Senior Group Leader, Inorganic Analysis Group at Argonne

310

KHALIL AMINE, PH  

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

Nada Dimitrijevic Nada Dimitrijevic Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 200 Argonne, IL 60439 phone: 630/252-3590, fax: 630/972-9289 email: dimitrijevic@anl.gov Professional Experience ï‚· Present. Physical Chemist at Argonne National Laboratory, working jointly for the Chemical Sciences and Engineering Division and the Center for Nanoscale Materials. Education ï‚· Ph.D., Physical Chemistry, Belgrade University, Yugoslavia Research Interests ï‚· Synthesis and characterization of colloidal semiconductor nanoparticles ï‚· Focus on 1. semiconductor assisted photocatalysis and solar fuel production by reducing CO2 to methane, and 2. light-induced charge transfer across bio-inorganic interfaces.

311

KHALIL AMINE, PH  

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

K. Basco K. Basco Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 205 Argonne, IL 60439-4837 phone: 630/252-7627, fax: 630/972-4418 e-mail: jkbasco@anl.gov Professional Experience ï‚· 1990 to Present. Engineering Specialist Senior, Electrochemical Analysis and Diagnostics Laboratory in the Electrochemical Storage Group at Argonne National Laboratory. Test and analyze advanced battery and fuel cell systems. ï‚· 1988 to 1990. Design and Development Engineer at McDonald's Corporation, in the Engineering Research and Development Group. Main projects were voice recognition, touch screen technology and robotics. ï‚· 1986 to 1988. Engineering Consultant designing and developing data acquisition and control systems for Enerteq Sciences, Gas Research

312

KHALIL AMINE, PH  

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

Professional Experience  1993-Present. Chemical Engineer at Argonne National Laboratory o Applied a variety of electrochemical and chemical techniques to a wide range of lithium and lithium-ion battery chemistries for transportation applications o Acquired extensive hands-on experience in various equipment needed for a successful lithium battery research facility such as glove box systems, power supplies/cyclers, data acquisition hardware, analytical instruments, and experimental test fixtures o 2008-Present. Lithium-ion battery R&D for plug-in hybrid electric vehicles (PHEV) - Applied Battery Research for Transportation Program for the Department of Energy-Energy Efficiency and Renewable Energy (DOE-EERE)  Developed improved methods of making intermetallic electrodes for

313

KHALIL AMINE, PH  

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

absorption for determining the resonance absorption integral of thorium metal. 1954-1957. Research Chemist, Pittsburgh Plate Glass Research Laboratory in work primarily...

314

KHALIL AMINE, PH  

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

Javier Figueroa Javier Figueroa Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 205 Argonne, IL 60439-4837 phone: 630/252-4248, fax: 630/972-4485 e-mail: figueroa@anl.gov Professional Experience ï‚· April 2002 - Present. Engineering Specialist Sr. that works in research and development of advanced nuclear fuel cycles with an emphasis on pyroprocessing technologies. He has expertise in plant modeling and the integration of unit operations to form a cohesive recycle facility. His work involves developing models for process flowsheets and material balances, waste handling, equipment concepts and facility designs. Javier is also an experienced nuclear worker with an extensive knowledge of molten salt

315

KHALIL AMINE, PH  

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

Oleg Poluektov Oleg Poluektov Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 200 Argonne, IL 60439-4837 phone: 630/252-3546, fax: 630/252-9289 e-mail: Oleg@anl.gov Professional Experience ï‚· 2000-Present. Scientist of the Photosynthesis group at Argonne National Laboratory. ï‚· 1997-1998, 1999. Visiting scientist, Chemistry Division at Argonne National Laboratory. ï‚· 1991-1996. Visiting scientist, Department of Physics, Leiden University, The Netherlands. ï‚· 1983-1989. Scientist of the Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia. ï‚· 1989-2000. Senior Scientist of the Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia.

316

KHALIL AMINE, PH  

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

Branko Ruscic Branko Ruscic Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 200 Argonne, IL 60439-4837 phone: 630/252-4079, fax: 630/252-9292 e-mail: ruscic@anl.gov Professional Experience ï‚· 1988-present. Scientist/Senior Scientist, Chemical Sciences and Engineering Division, Argonne National Laboratory. ï‚· 1985-1987. Visiting Scientist (3 months per year), Chemistry (1987) and Physics (1985, 1986) Divisions, Argonne National Laboratory. ï‚· 1984-1988. Scientist, Department of Physical Chemistry, "Rugjer Boskovic" Institute, Zagreb. ï‚· 1981-1983. Postdoctoral Appointee, Physics Division, Argonne National Laboratory. ï‚· 1980-1981. Research Associate, Department of Physical Chemistry,

317

KHALIL AMINE, PH  

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

Delbert L. Bowers Delbert L. Bowers Argonne National Laboratory Chemical Sciences and Engineering Division 9700 South Cass Avenue, Building 205 Argonne, IL 60439-4837 phone: 630/252- 4354, fax: 630/252-4506 Email: bowersd@anl.gov Professional Experience 2004-Present. Chemist in the Analytical Chemistry Laboratory at Argonne National Laboratory. 1994-2004. Group leader in the Analytical Chemistry Laboratory at Argonne National Laboratory. 1993-1994. Acting Group Leader in the Analytical Chemistry Laboratory at Argonne National Laboratory. 1987-1993. Chemist in the Analytical Chemistry Laboratory at Argonne National Laboratory. 1982-1987. Scientific Associate in the Analytical Chemistry Laboratory at Argonne National Laboratory. 1978-1982. Scientific Assistant in the Analytical Chemistry Laboratory at

318

KHALIL AMINE, PH  

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

USA, leading R&D on advanced cathode and anode materials for high-power and high-energy lithium-ion battery applications, including battery systems for transportation, satellite,...

319

KHALIL AMINE, PH  

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

Reactive and Solvation Dynamics and their Critical Tests at American Chemical Society (ACS) 195th National Meeting, Boston (1990) Graduate Student Teaching Award (1987, 1989)...

320

KHALIL AMINE, PH  

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

Preston, Tiffany Correll, Deana Manley, Troy Soukup, Randy Jensen, Rashid Syed, George Moniz, Robert Larsen, Michael Martinelli, and Paul J. Reider, "A highly enantioselective...

Note: This page contains sample records for the topic "amine absorbent cxs" 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

KHALIL AMINE, PH  

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

of Photoexcited Molecular Structures in Disordered Media Using Pulsed X-rays," Angew. Chemie. Intl. Ed., (Invited Review) 43, 2886-2905 (2004). Lin X. Chen, George B. Shaw,...

322

KHALIL AMINE, PH  

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

E. Wilson, Peter C. Burns. The structure of a Pu-38 oxide nanocluster. Angewandte Chemie Int. Ed. 47 298-302, (2008). Richard E. Wilson, S. Skanthakumar, P. C. Burns, L....

323

KHALIL AMINE, PH  

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

Professional Experience March 2005 - Present: Assistant Chemical Engineer - Catalysis and Energy Conversion Research Theme, Chemical Sciences and Engineering. ...

324

KHALIL AMINE, PH  

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

University of Illinois in Urbana, Trace Elements in Municipal Solid Waste Incinerator Ash Education Ph.D., Nuclear EngineeringGeochemistry Minor, 1998. M.S., Nuclear...

325

KHALIL AMINE, PH  

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

systems (BES DOE) Chemistry of martian soils (MFRPNASA) Ionic liquids for technetium removal (AFCI NE DOE) Surface modified porous glass for sequestration of...

326

KHALIL AMINE, PH  

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

element separation. March 2006-November 2008. Postdoctoral Research Associate, Oak Ridge National Lab, Oak Ridge, TN. Using small angle neutron scattering to study the...

327

KHALIL AMINE, PH  

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

Laboratory, Illinois January 1981 - June 1986. Group Leader, Fuel Processing Group, Idaho National Engineering Laboratory, Idaho. June 1977 - January 1981. Research...

328

KHALIL AMINE, PH  

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

Senior Scientist at Greatbatch. Lithium battery research and development for implantable medical devices. 2004-2006. Research Associate at Argonne National Laboratory....

329

KHALIL AMINE, PH  

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

1980-1987. Research Associate, Physical Chemistry Branch, Atomic Energy of Canada Ltd., Chalk River, Ontario, Canada. 1978-1980. Visiting Assistant Professor,...

330

KHALIL AMINE, PH  

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

Illinois. Career Activities & Highlights Inorganic Analysis: ICP, ICP-MS, Hg, TCLP, LECO Carbon & Sulfur o Support to PNNL TTQP for ICP: cation impurities and high...

331

KHALIL AMINE, PH  

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

Designed remote control equipment for experimental use in shielded facilities. Manipulator operator and remote controlled Parr arm operator. Lead the decommissioning team for...

332

Epitaxial Crystal Silicon Absorber Layers and Solar Cells Grown at 1.8 Microns per Minute: Preprint  

DOE Green Energy (OSTI)

We have grown device-quality epitaxial silicon thin films at growth rates up to 1.8 ?m/min, using hot-wire chemical vapor deposition from silane at substrate temperatures below 750 degrees C. At these rates, which are more than 30 times faster than those used by the amorphous and nanocrystalline Si industry, capital costs for large-scale solar cell production would be dramatically reduced, even for cell absorber layers up to 10 ?m thick. We achieved high growth rates by optimizing the three key parameters: silane flow, depletion, and filament geometry, based on our model developed earlier. Hydrogen coverage of the filament surface likely limits silane decomposition and growth rate at high system pressures. No considerable deterioration in PV device performance is observed when grown at high rate, provided that the epitaxial growth is initiated at low rate. A simple mesa device structure (wafer/epi Si/a-Si(i)/a-Si:H(p)/ITO) with a 2.3 um epitaxial silicon absorber layer was grown at 700 nm/min. The finished device had an open-circuit voltage of 0.424 V without hydrogenation treatment.

Bobela, D. C.; Teplin, C. W.; Young, D. L.; Branz, H. M.; Stradins, P.

2011-07-01T23:59:59.000Z

333

Heat transfer analysis of an Owens Illinois absorber incorporated within a two-dimensional CPC Cusp concentrator  

SciTech Connect

A 2-dimensional Compound Parabolic Concentrator of the Cusp type (CPC-Cusp) was designed to function without the need of diurnal and seasonal orientation adjustments. These constraints required an acceptance half-angle of 60/sup 0/C for this concentrator (concentration ratio = 1.12). Troughs, 105.4 cm (41.5 inches) in length were fabricated using aluminized Mylar for the reflecting surface supported by a polystyrene foam structure. For the receiver, an Owens-Illinois absorber tube, provided with a selective surface and surrounded by evacuated glass jacket, was used. The design of this particular absorber forces the working fluid to flow countercurrently to itself, thus creating thermal short-circuiting typical of the bayonet type heat exchangers. For this mode of operation, a model was postulated to describe the temperature distribution within the annular space and the tube side of the receiver. Temperature-distribution measurements corroborated this model which postulates the existence of a maximum temperature at the end of the receiver, where reversal of flow occurs. This flow reversal causes an unavoidable thermal short circuiting which significantly increases the receiver temperature. Fortunately, because of the presence of the selective surface and the evacuated jacket surrounding the receiver, this temperature rise decreases the concentrator efficiency only but slightly.

Damrigan, N.

1985-01-01T23:59:59.000Z

334

Bulk gold catalyzed oxidation reactions of amines and isocyanides and iron porphyrin catalyzed N-H and O-H bond insertion/cyclization reactions of diamines and aminoalcohols  

Science Conference Proceedings (OSTI)

This work involves two projects. The first project entails the study of bulk gold as a catalyst in oxidation reactions of isocyanides and amines. The main goal of this project was to study the activation and reactions of molecules at metal surfaces in order to assess how organometallic principles for homogeneous processes apply to heterogeneous catalysis. Since previous work had used oxygen as an oxidant in bulk gold catalyzed reactions, the generality of gold catalysis with other oxidants was examined. Amine N-oxides were chosen for study, due to their properties and use in the oxidation of carbonyl ligands in organometallic complexes. When amine N-oxides were used as an oxidant in the reaction of isocyanides with amines, the system was able to produce ureas from a variety of isocyanides, amines, and amine N-oxides. In addition, the rate was found to generally increase as the amine N-oxide concentration increased, and decrease with increased concentrations of the amine. Mechanistic studies revealed that the reaction likely involves transfer of an oxygen atom from the amine N-oxide to the adsorbed isocyanide to generate an isocyanate intermediate. Subsequent nucleophilic attack by the amine yields the urea. This is in contrast to the bulk gold-catalyzed reaction mechanism of isocyanides with amines and oxygen. Formation of urea in this case was proposed to proceed through a diaminocarbene intermediate. Moreover, formation of the proposed isocyanate intermediate is consistent with the reactions of metal carbonyl ligands, which are isoelectronic to isocyanides. Nucleophilic attack at coordinated CO by amine N-oxides produces CO{sub 2} and is analogous to the production of an isocyanate in this gold system. When the bulk gold-catalyzed oxidative dehydrogenation of amines was examined with amine N-oxides, the same products were afforded as when O{sub 2} was used as the oxidant. When the two types of oxidants were directly compared using the same reaction system and conditions, it was found that the oxidative dehydrogenation of dibenzylamine to Nbenzylidenebenzylamine, with N-methylmorpholine N-oxide (NMMO), was nearly quantitative (96%) within 24 h. However, the reaction with oxygen was much slower, with only a 52% yield of imine product over the same time period. Moreover, the rate of reaction was found to be influenced by the nature of the amine N-oxide. For example, the use of the weakly basic pyridine N-oxide (PyNO) led to an imine yield of only 6% after 24 h. A comparison of amine N-oxide and O2 was also examined in the oxidation of PhCH{sub 2}OH to PhCHO catalyzed by bulk gold. In this reaction, a 52% yield of the aldehyde was achieved when NMMO was used, while only a 7% product yield was afforded when O{sub 2} was the oxidant after 48 h. The bulk gold-catalyzed oxidative dehydrogenation of cyclic amines generates amidines, which upon treatment with Aerosil and water were found to undergo hydrolysis to produce lactams. Moreover, 5-, 6-, and 7-membered lactams could be prepared through a one-pot reaction of cyclic amines by treatment with oxygen, water, bulk gold, and Aerosil. This method is much more atom economical than industrial processes, does not require corrosive acids, and does not generate undesired byproducts. Additionally, the gold and Aerosil catalysts can be readily separated from the reaction mixture. The second project involved studying iron(III) tetraphenylporphyrin chloride, Fe(TPP)Cl, as a homogeneous catalyst for the generation of carbenes from diazo reagents and their reaction with heteroatom compounds. Fe(TPP)Cl, efficiently catalyzed the insertion of carbenes derived from methyl 2-phenyldiazoacetates into O-H bonds of aliphatic and aromatic alcohols. Fe(TPP)Cl was also found to be an effective catalyst for tandem N-H and O-H insertion/cyclization reactions when 1,2-diamines and 1,2-alcoholamines were treated with diazo reagents. This approach provides a one-pot process for synthesizing piperazinones and morpholinones and related analogues such as quinoxalinones and benzoxazin-2-ones.

Klobukowski, Erik

2011-12-29T23:59:59.000Z

335

INSIGHTS INTO SURFACE HYDROGENATION IN THE INTERSTELLAR MEDIUM: OBSERVATIONS OF METHANIMINE AND METHYL AMINE IN Sgr B2(N)  

SciTech Connect

Multiple observations of methanimine (CH{sub 2}NH) and methyl amine (CH{sub 3}NH{sub 2}) have been performed toward Sgr B2(N) at 1, 2, and 3 mm using the Submillimeter Telescope and the 12 m antenna of the Arizona Radio Observatory. In the frequency range 68-280 GHz, 23 transitions of CH{sub 2}NH and 170 lines of CH{sub 3}NH{sub 2} have been observed as individual, distinguishable features, although some are partially blended with other lines. For CH{sub 2}NH, the line profiles indicate V{sub LSR} = 64.2 {+-} 1.4 km s{sup -1} and {Delta}V{sub 1/2} = 13.8 {+-} 2.8 km s{sup -1}, while V{sub LSR} = 63.7 {+-} 1.6 km s{sup -1} and {Delta}V{sub 1/2} = 15.1 {+-} 3.0 km s{sup -1} for CH{sub 3}NH{sub 2}, parameters that are very similar to those of other organic species in Sgr B2(N). From these data, rotational diagrams were constructed for both species. In the case of CH{sub 2}NH, a rotational temperature of T{sub rot} = 44 {+-} 13 K and a column density of N{sub tot} = (9.1 {+-} 4.4) Multiplication-Sign 10{sup 14} cm{sup -2} were determined from the analysis. For CH{sub 3}NH{sub 2}, T{sub rot} = 159 {+-} 30 K and N{sub tot} = (5.0 {+-} 0.9) Multiplication-Sign 10{sup 15} cm{sup -2}, indicating that this species is present in much warmer gas than CH{sub 2}NH. The fractional abundances for CH{sub 2}NH and CH{sub 3}NH{sub 2} were established to be f (H{sub 2}) Almost-Equal-To 3.0 Multiplication-Sign 10{sup -10} and f (H{sub 2}) Almost-Equal-To 1.7 Multiplication-Sign 10{sup -9}, respectively. It has been proposed that CH{sub 2}NH is formed on grains via hydrogenation of HCN; further hydrogenation of CH{sub 2}NH on surfaces leads to CH{sub 3}NH{sub 2}. However, given the dissimilarity between the rotational temperatures and distributions of CH{sub 2}NH and CH{sub 3}NH{sub 2} in Sgr B2, it is improbable that these species are closely related synthetically, at least in this source. Both CH{sub 2}NH and CH{sub 3}NH{sub 2} are more likely created by neutral-neutral processes in the gas phase.

Halfen, D. T.; Ziurys, L. M. [Departments of Chemistry and Astronomy, Arizona Radio Observatory and Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States)] [Departments of Chemistry and Astronomy, Arizona Radio Observatory and Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Ilyushin, V. V., E-mail: halfendt@as.arizona.edu, E-mail: lziurys@as.arizona.edu [Institute of Radio Astronomy of the National Academy of Sciences Ukraine, Chervonopraporna 4, 61002 Kharkov (Ukraine)

2013-04-10T23:59:59.000Z

336

Preliminary Results of a RANS Simulation for a Floating Point Absorber Wave Energy System Under Extreme Wave Conditions  

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

Preliminary Results of a RANS Preliminary Results of a RANS Simulation for a Floating Point Absorber Wave Energy System Under Extreme Wave Conditions Y. Yu and Y. Li Presented at the 30 th International Conference on Ocean, Offshore, and Arctic Engineering Rotterdam, The Netherlands June 19 - 24, 2011 Conference Paper NREL/CP-5000-50967 October 2011 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (Alliance), a contractor of the US Government under Contract No. DE-AC36-08GO28308. Accordingly, the US Government and Alliance retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government.

337

High concentration two-stage optics for parabolic trough solar collectors with tubular absorber and large rim angle  

SciTech Connect

A new two-stage optical design is proposed for parabolic trough solar collectors with tubular absorbers. It can boost the concentration ratio by a factor of 2.5 relative to the conventional design, while maintaining the large rim angles (i.e., low nominal f-numbers) that are desirable for practical and economical reasons. The second state involves asymmetric nonimaging concentrators of the CPC type, facing segments of the parabolic first stage. The second stage can be accommodated inside an evacuated receiver, allowing the use of first-surface silvered reflectors. The low heat loss of this design opens the possibility of producing steam at temperatures and pressures of conventional power plants, using only one-axis tracking. The improvement in conversion efficiency would be substantial.

Collares-Pereira, M. (Centro para a Conservacao de Energia, Amadora (Portugal)); Gordon, J.M. (Ben Gurion Univ. of the Negev, Beersheva (Israel)); Rabl, A. (Centre d'Energetique, Paris (France)); Winston, R. (Univ. of Chicago, IL (United States))

1991-01-01T23:59:59.000Z

338

Design Considerations for an MEBT Chopper Absorber of 2.1 MeV H- at the Project X Injector Experiment at Fermilab  

SciTech Connect

The Project X Injector Experiment (PIXIE) will be a prototype of the Project X front end that will be used to validate the design concept and decrease technical risks. One of the most challenging components of PIXIE is the wide-band chopping system of the Medium Energy Beam Transport (MEBT) section, which will form an arbitrary bunch pattern from the initially CW 162.5 MHz 5mA beam. The present scenario assumes diverting 80% of the beam to an absorber to provide a beam with the average current of 1mA to SRF linac. This absorber must withstand a high level of energy deposition and high ion fluence, while being positioned in proximity of the superconductive cavities. This paper discusses design considerations for the absorber. Thermal and mechanical analyses of a conceptual design are presented, and future plans for the fabrication and testing of a prototype are described.

Baffes, C.; Awida, M.; Chen, A.; Eidelman, Y.; Lebedev, V.; Prost, L.; Shemyakin, A.; Solyak, N.; Yakovlev, V.; /Fermilab

2012-05-14T23:59:59.000Z

339

Scientists Identify New Family of Iron-Based Absorber Materials for Solar Cells (Fact Sheet), NREL Highlights, Science  

DOE Green Energy (OSTI)

Use of Earth-abundant materials in solar absorber films is critical for expanding the reach of photovoltaic (PV) technologies. The use of Earth-abundant and inexpensive Fe in PV was proposed more than 25 years ago in the form of FeS{sub 2} pyrite - fool's gold. Unfortunately, the material has been plagued by performance problems that to this day are both persistent and not well understood. Researchers from the National Renewable Energy Laboratory (NREL) and Oregon State University, working collaboratively in the Center for Inverse Design, an Energy Frontier Research Center, have uncovered several new insights into the problems of FeS{sub 2}. They have used these advances to propose and implement design rules that can be used to identify new Fe-containing materials that can circumvent the limitations of FeS{sub 2} pyrite. The team has identified that it is the unavoidable metallic secondary phases and surface defects coexisting near the FeS{sub 2} thin-film surfaces and grain boundaries that limit its open-circuit voltage, rather than the S vacancies in the bulk, which has long been commonly assumed. The materials Fe{sub 2}SiS{sub 4} and Fe{sub 2}GeS{sub 4} hold considerable promise as PV absorbers. The ternary Si compound is especially attractive, as it contains three of the more abundant low-cost elements available today. The band gap (E{sub g} = 1.5 eV) from both theory and experiment is higher than those of c-Si and FeS{sub 2}, offering better absorption of the solar spectrum and potentially higher solar cell efficiencies. More importantly, these materials do not have metallic secondary phase problems as seen in FeS{sub 2}. High calculated formation energies of donor-type defects are consistent with p-type carriers in thin films and are prospects for high open-circuit voltages in cells.

Not Available

2011-10-01T23:59:59.000Z

340

A FOURTH H I 21 cm ABSORPTION SYSTEM IN THE SIGHT LINE OF MG J0414+0534: A RECORD FOR INTERVENING ABSORBERS  

SciTech Connect

We report the detection of a strong H I 21 cm absorption system at z = 0.5344, as well as a candidate system at z = 0.3389, in the sight line toward the z = 2.64 quasar MG J0414+0534. This, in addition to the absorption at the host redshift and the other two intervening absorbers, takes the total to four (possibly five). The previous maximum number of 21 cm absorbers detected along a single sight line is two and so we suspect that this number of gas-rich absorbers is in some way related to the very red color of the background source. Despite this, no molecular gas (through OH absorption) has yet been detected at any of the 21 cm redshifts, although, from the population of 21 cm absorbers as a whole, there is evidence for a weak correlation between the atomic line strength and the optical-near-infrared color. In either case, the fact that so many gas-rich galaxies (likely to be damped Ly{alpha} absorption systems) have been found along a single sight line toward a highly obscured source may have far-reaching implications for the population of faint galaxies not detected in optical surveys, a possibility which could be addressed through future wide-field absorption line surveys with the Square Kilometer Array.

Tanna, A.; Webb, J. K. [School of Physics, University of New South Wales, Sydney, NSW 2052 (Australia); Curran, S. J. [Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006 (Australia); Whiting, M. T. [CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia); Bignell, C., E-mail: sjc@physics.usyd.edu.au [National Radio Astronomy Observatory, P.O. Box 2, Rt. 28/92 Green Bank, WV 24944-0002 (United States)

2013-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Production of crystalline refractory metal oxides containing colloidal metal precipitates and useful as solar-effective absorbers  

DOE Patents (OSTI)

This invention is a new process for producing refractory crystalline oxides having improved or unusual properties. The process comprises the steps of forming a doped-metal crystal of the oxide; exposing the doped crystal in a bomb to a reducing atmosphere at superatmospheric pressure and a temperature effecting precipitation of the dopant metal in the crystal lattice of the oxide but insufficient to effect net diffusion of the metal out of the lattice; and then cooling the crystal. Preferably, the cooling step is effected by quenching. The process forms colloidal precipitates of the metal in the oxide lattice. The process may be used, for example, to produce thermally stable black MgO crystalline bodies containing magnetic colloidal precipitates consisting of about 99% Ni. The Ni-containing bodies are solar-selective absorbers, having a room-temperature absorptivity of about 0.96 over virtually all of the solar-energy spectrum and exhibiting an absorption edge in the region of 2 .mu.m. The process parameters can be varied to control the average size of the precipitates. The process can produce a black MgO crystalline body containing colloidal Ni precipitates, some of which have the face-centered-cubic structure and others of which have the body-centered cubic structure. The products of the process are metal-precipitate-containing refractory crystalline oxides which have improved or unique optical, mechanical, magnetic, and/or electronic properties.

Narayan, Jagdish (Knoxville, TN); Chen, Yok (Oak Ridge, TN)

1983-01-01T23:59:59.000Z

342

Alabama | Department of Energy  

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

Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 10182011...

343

CX-000445: Categorical Exclusion Determination | Department of...  

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

Exclusion Determination Sulfur Dioxide resistant Immobilized Amine Sorbents for Carbon Dioxide Capture CX(s) Applied: A9, A11, B3.1 Date: 11232009 Location(s): Akron,...

344

CX-007065: Categorical Exclusion Determination | Department of...  

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

Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 10182011...

345

CX-008923: Categorical Exclusion Determination | Department of...  

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

Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 08242012...

346

CX-007099: Categorical Exclusion Determination | Department of...  

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

Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: A9, A11 Date: 10132011...

347

Relative Importance of Hip and Sacral Pain Among Long-Term Gynecological Cancer Survivors Treated With Pelvic Radiotherapy and Their Relationships to Mean Absorbed Doses  

Science Conference Proceedings (OSTI)

Purpose: To investigate the relative importance of patient-reported hip and sacral pain after pelvic radiotherapy (RT) for gynecological cancer and its relationship to the absorbed doses in these organs. Methods and Materials: We used data from a population-based study that included 650 long-term gynecological cancer survivors treated with pelvic RT in the Gothenburg and Stockholm areas in Sweden with a median follow-up of 6 years (range, 2-15) and 344 population controls. Symptoms were assessed through a study-specific postal questionnaire. We also analyzed the hip and sacral dose-volume histogram data for 358 of the survivors. Results: Of the survivors, one in three reported having or having had hip pain after completing RT. Daily pain when walking was four times as common among the survivors compared to controls. Symptoms increased in frequency with a mean absorbed dose >37.5 Gy. Also, two in five survivors reported pain in the sacrum. Sacral pain also affected their walking ability and tended to increase with a mean absorbed dose >42.5 Gy. Conclusions: Long-term survivors of gynecological cancer treated with pelvic RT experience hip and sacral pain when walking. The mean absorbed dose was significantly related to hip pain and was borderline significantly related to sacral pain. Keeping the total mean absorbed hip dose below 37.5 Gy during treatment might lower the occurrence of long-lasting pain. In relation to the controls, the survivors had a lower occurrence of pain and pain-related symptoms from the hips and sacrum compared with what has previously been reported for the pubic bone.

Waldenstroem, Ann-Charlotte, E-mail: ann-charlotte.waldenstrom@oncology.gu.se [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden) [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden); Department of Oncology, Sahlgrenska University Hospital, Gothenburg (Sweden); Olsson, Caroline [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden) [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden); Department of Radiation Physics, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden); Wilderaeng, Ulrica [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden)] [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden); Dunberger, Gail; Lind, Helena; Alevronta, Eleftheria [Division of Clinical Cancer Epidemiology, Department of Oncology-Pathology, Karolinska Institute, Stockholm (Sweden)] [Division of Clinical Cancer Epidemiology, Department of Oncology-Pathology, Karolinska Institute, Stockholm (Sweden); Al-Abany, Massoud [Division of Clinical Cancer Epidemiology, Department of Oncology-Pathology, Karolinska Institute, Stockholm (Sweden) [Division of Clinical Cancer Epidemiology, Department of Oncology-Pathology, Karolinska Institute, Stockholm (Sweden); Department of Hospital Physics, Karolinska University Hospital, Stockholm (Sweden); Tucker, Susan [Department of Bioinformatics and Computational Biology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States)] [Department of Bioinformatics and Computational Biology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Avall-Lundqvist, Elisabeth [Department of Gynecologic Oncology, Karolinska University Hospital, Stockholm (Sweden)] [Department of Gynecologic Oncology, Karolinska University Hospital, Stockholm (Sweden); Johansson, Karl-Axel [Department of Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg (Sweden)] [Department of Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg (Sweden); Steineck, Gunnar [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden) [Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at University of Gothenburg, Gothenburg (Sweden); Division of Clinical Cancer Epidemiology, Department of Oncology-Pathology, Karolinska Institute, Stockholm (Sweden)

2012-10-01T23:59:59.000Z

348

Ultraviolet absorbing copolymers  

DOE Patents (OSTI)

Photostable and weather stable absorping copolymers have been prepared from acrylic esters such as methyl methacrylate containing 0.1 to 5% of an 2-hydroxy-allyl benzophenone, preferably the 4,4' dimethoxy derivative thereof. The pendant benzophenone chromophores protect the acrylic backbone and when photoexcited do not degrade the ester side chain, nor abstract hydrogen from the backbone.

Gupta, Amitava (Pasadena, CA); Yavrouian, Andre H. (La Crescenta, CA)

1982-01-01T23:59:59.000Z

349

Electron Photon Absorbed Dose  

Science Conference Proceedings (OSTI)

... is in progress, with preliminary results obtained for both high-energy electrons (at the ... of Clinac 12 MeV, 16 MeV and 20 MeV electron beams at ...

2013-03-13T23:59:59.000Z

350

Absorbing devaluation: Pemex penalized  

SciTech Connect

Shock from Mexico`s international finance debacle has created a ripple across the global pond, affecting trading markets from Buenos Aires to Hong Kong. Mexican consumers must cope with a currency that can purchase 40% fewer imported goods than it could seven weeks ago. The Mexican government has taken austerity measures controlling prices on staple consumer items designed to prevent rampant inflation. State oil company Petroleos Mexicanos is left exposed to some of the costs of the peso devaluation to supply Mexican gasoline markets with imported supply. However, Mexico`s flexible tax structure allows Pemex to divert the cost throughout its operations.

NONE

1995-01-30T23:59:59.000Z

351

Neutron Absorbing Alloys  

DOE Patents (OSTI)

A process for making homogeneous copolymers of vinylpyrrolidone (VP) and vinyl acetate (VA) which form clear aqueous solutions and have high cloud points. The process involves precharging VP and VA monomers in a predetermined ratio, and then feeding VP and VA at a predetermined rate, the ratio of the components in the initial charge and the feeding rates for the monomer being selected in accordance with the reactivity rates of the monomers towards copolymerization as opposed to homopolymerization.

Zhong, Yuanzhen (Wayne, NJ), Parikh, Hemant (Harriman, NY); Smith, Terry E. (Murray, KY)

2002-05-28T23:59:59.000Z

352

Metamaterial-based integrated plasmonic absorber/emitter for solar thermo-photovoltaic This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network (OSTI)

coupled to a photovoltaic (PV) cell for power generation. By employing a low reflectivity refractory metal using photovoltaic (PV) cells, light trapping and enhanced absorbance by surface plasmons have beenMetamaterial-based integrated plasmonic absorber/emitter for solar thermo-photovoltaic systems

Shvets, Gennady

353

Physical features of accumulation and distribution processes of small disperse coal dust precipitations and absorbed radioactive chemical elements in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of absorption process of radioactive chemical elements and their isotopes in the iodine air filters of the type of AU-1500 at the nuclear power plants are researched. It is shown that the non-homogenous spatial distribution of absorbed radioactive chemical elements and their isotopes in the iodine air filter, probed by the gamma-activation analysis method, is well correlated with the spatial distribution of small disperse coal dust precipitations in the iodine air filter. This circumstance points out to an important role by the small disperse coal dust fractions of absorber in the absorption process of radioactive chemical elements and their isotopes in the iodine air filter. The physical origins of characteristic interaction between the radioactive chemical elements and the accumulated small disperse coal dust precipitations in an iodine air filter are considered. The analysis of influence by the researched physical processes on the technical characteristics and functionality of iodine ...

Ledenyov, Oleg P; Poltinin, P Ya; Fedorova, L I

2012-01-01T23:59:59.000Z

354

BADGER, a Probe for Nondestructive Testing of Residual Boron-10 Absorber Density in Spent-Fuel Storage Racks: Development and Demons tration  

Science Conference Proceedings (OSTI)

The in-service degradation of Boraflex -- a neutron absorber material used in spent-fuel racks for criticality control -- is a problem at some 50 U.S. nuclear plants. EPRI has developed the BADGER probe to nondestructively measure the residual boron-10 areal density in Boraflex. The probe has been demonstrated in BWR and PWR spent-fuel pools. BADGER measurements can be used to monitor the loss of boron-10 and confirm the integrity of the remaining Boraflex.

1997-12-09T23:59:59.000Z

355

Theoretical Analysis of Effects of Deep Level, Back Contact, and Absorber Thickness on Capacitance-Voltage Profiling of CdTe Thin-Film Solar Cells  

Science Conference Proceedings (OSTI)

The apparent carrier density profile measured by the capacitance-voltage technique in CdTe thin-film solar cells frequently displays a distinctive U-shape. We show that, even assuming a uniform carrier density, such a U-shape may arise from deep levels, a non-ohmic back-contact, and a thin absorber, which are commonly present in practical CdTe thin-film solar cells. A thin CdTe absorber contributes to the right branch of the U-shape due to a punch-through effect at reverse or zero biases, when the CdTe absorber is nearly fully depleted. A rectifying back-contact contributes to both branches of the U-shape due to voltage sharing with the front junction under a forward bias and early punch-through under a reverse bias. Deep levels contribute to the right branch, but also raise the bottom of the U-shape, leading to an overestimate of carrier density.

Li, J. V.; Halverson, A. F.; Sulima, O. V.; Bansal, S.; Burst, J. M.; Barnes, T. M.; Gessert, T. A.; Levi, D. H.

2012-05-01T23:59:59.000Z

356

Post-Combustion CO2 Capture for Existing PC Boilers by Self-Concentrat...  

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

Amine Absorbent Background The mission of the U.S. Department of EnergyNational Energy Technology Laboratory (DOENETL) Existing Plants, Emissions & Capture (EPEC)...

357

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.

Oleg P. Ledenyov; Ivan M. Neklyudov

2013-06-14T23:59:59.000Z

358

DESCRIPTION OF THE TRITIUM-PRODUCING BURNABLE ABSORBER ROD FOR THE COMMERCIAL LIGHT WATER REACTOR TTQP-1-015 Rev 19  

Science Conference Proceedings (OSTI)

Tritium-producing burnable absorber rods (TPBARs) used in the U.S. Department of Energy’s Tritium Readiness Program are designed to produce tritium when placed in a Westinghouse or Framatome 17x17 fuel assembly and irradiated in a pressurized water reactor (PWR). This document provides an unclassified description of the current design baseline for the TPBARs. This design baseline is currently valid only for Watts Bar reactor production cores. A description of the Lead Use TPBARs will not be covered in the text of the document, but the applicable drawings, specifications and test plan will be included in the appropriate appendices.

Burns, Kimberly A.; Love, Edward F.; Thornhill, Cheryl K.

2012-02-01T23:59:59.000Z

359

Author manuscript, published in "2nd Biot Conference on Poromechanics, Grenoble: France (2002)" On measurement of mechanical properties of sound absorbing materials  

E-Print Network (OSTI)

ABSTRACT: This paper is an overview of quasistatic measurement technique used to determine mechanical properties of sound absorbing materials. Experimental context and behaviour of polymer foam and rock wool are summarized. Concerning parameters are: static and dynamic strains, dynamic effects such as skeleton resonance and coupling with saturating fluid. Material anisotropy and frequency dependance of characteristics are also addressed. It is shown that this technique is well suited for usual material up to 100 Hz. Restrictions occurs for thin samples of very high air flow resistivity and for fibrous material that do not exhibit a linear behaviour with static strain.

N. Dauchez; M. Etchessahar; S. Sahraoui

2008-01-01T23:59:59.000Z

360

Simulation and performance analysis of an ammonia-water absorption heat pump based on the generator-absorber heat exchange (GAX) cycle  

Science Conference Proceedings (OSTI)

A computer simulation has been conducted to investigate the performance of an absorption heat pump, based on the Generator-Absorber Heat Exchange (GAX) cycle employing ammonia-water as the working fluid pair. The particular feature of this cycle is the ability to recover heat from the absorber and employ it to partially heat the generator, thus improving the COP. In the present study, a detailed simulation has been conducted of one of the preferred configurations for the cycle. A modular computer code for flexible simulation of absorption systems (ABSIM) was employed. Performance parameters, including COP and capacity, were investigated as functions of different operating parameters over a wide range of conditions in both the cooling and heating mode. The effect of the ambient temperature, the rectifier performance, the flowrate in the GAX heat transfer loop and the refrigerant flow control were investigated. COP`s on the order of 1.0 for cooling and 2.0 for heating have been calculated.

Grossman, G. [Israel Institute of Technology, Haifa (Israel); DeVault, R.C.; Creswick, F.A. [Oak Ridge National Lab., TN (United States)

1995-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

A Bibliography on Amin's Uganda  

E-Print Network (OSTI)

April 1973), pp. 34-41. Tandon, Yash. "The expulsions fromAfrica Program, 1973, 58 pp. Tandon, Yash. Pl'd:J lema of a

Askgaard, Preben

1974-01-01T23:59:59.000Z

362

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network (OSTI)

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antin...

Ledenyov, Oleg P

2013-01-01T23:59:59.000Z

363

SUZAKU VIEW OF X-RAY SPECTRAL VARIABILITY OF THE RADIO GALAXY CENTAURUS A: PARTIAL COVERING ABSORBER, REFLECTOR, AND POSSIBLE JET COMPONENT  

SciTech Connect

We observed a nearby radio galaxy, Centaurus A (Cen A), three times with Suzaku in 2009 and measured the wide-band X-ray spectral variability more accurately than previous measurements. The Cen A was in an active phase in 2009, and the flux became higher by a factor of 1.5-2.0 and the spectrum became harder than that in 2005. The Fe-K line intensity increased by 20%-30% from 2005 to 2009. The correlation of the count rate between the XIS 3-8 keV and PIN 15-40 keV band showed a complex behavior with a deviation from a linear relation. The wide-band X-ray continuum in 2-200 keV can be fitted with an absorbed power-law model plus a reflection component, or a power law with a partial covering Compton-thick absorption. The difference spectra between high and low flux periods in each observation were reproduced by a power law with a partial covering Compton-thick absorption. Such a Compton-thick partial covering absorber was observed for the first time in Cen A. The power-law photon index of the difference spectra in 2009 is almost the same as that of the time-averaged spectra in 2005, but steeper by {approx}0.2 than that of the time-averaged spectra in 2009. This suggests an additional hard power-law component with a photon index of <1.6 in 2009. This hard component could be a lower part of the inverse-Compton-scattered component from the jet, whose gamma-ray emission has recently been detected with the Fermi Large Area Telescope.

Fukazawa, Yasushi; Hiragi, Kazuyoshi; Yamazaki, Syoko; Mizuno, Motohiro; Hayashi, Kazuma; Hayashi, Katsuhiro; Nishino, Sho; Takahashi, Hiromitsu; Ohno, Masanori, E-mail: fukazawa@hep01.hepl.hiroshima-u.ac.jp [Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan)

2011-12-20T23:59:59.000Z

364

Implications of a non-universal IMF from C, N, and O abundances in very metal-poor Galactic stars and damped Lyman-alpha absorbers  

E-Print Network (OSTI)

Recently revealed C, N, and O abundances in the most metal-poor damped Lyman-alpha (DLA) absorbers are compared with those of extremely metal-poor stars in the Galactic halo, as well as extragalactic H II regions, to decipher nucleosynthesis and chemical enrichment in the early Universe. These comparisons surprisingly identify a relatively high C/O ratio and a low N/O ratio in DLA systems, which is hard to explain theoretically. We propose that if these features are confirmed by future studies, this effect occurs because the initial mass function in metal-poor DLA systems has a cut-off at the upper mass end at around 20-25 Msun, thus lacks the massive stars that provide the nucleosynthesis products leading to the low C/O and high N/O ratios. This finding is a reasonable explanation of the nature of DLA systems in which a sufficient amount of cold H I gas remains intact because of the suppression of ionization by massive stars. In addition, our claim strongly supports a high production rate of N in very massiv...

Tsujimoto, T

2011-01-01T23:59:59.000Z

365

Liquid Cryogen Absorber for MICE  

E-Print Network (OSTI)

connected to the cooler and condenser through a liquid feedmixed with liquid) to a condenser attached to the coolervacuum failure. Tube to Condenser Magnet Coil Magnet Mandrel

2005-01-01T23:59:59.000Z

366

Liquid Hydrogen Absorber for MICE  

E-Print Network (OSTI)

from the bottom of a condenser attached to the second stagereturned to the top of the condenser. Hydrogen is explosivetank, and condensed in a condenser attached to the Sumitomo

Ishimoto, S.

2010-01-01T23:59:59.000Z

367

North Dakota | Department of Energy  

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

January 13, 2011 CX-004983: Categorical Exclusion Determination Evaluation of a Spray Dryer Absorber for Multipollutant Control CX(s) Applied: A9, B3.6 Date: 01132011...

368

Finding of No Significant Impact for the Storage of Tritium-Producing Burnable Absorber Rods in K-Area Transfer Bay at the Savannah River Site (DOE/EA-1528) (06/01/05)  

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

the the Storage of Tritium-Producing Burnable Absorber Rods in K-Area Transfer Bay at the Savannah River Site Agency: U.S. Department of Energy (DOE) Action: Finding of No Significant Impact Summary: The DOE Savannah River Operations Office (SR) and the National Nuclear Security Administration (NNSA) Savannah River Site Office (SRSO) have prepared an environmental assessment (EA), DOE/EA-1528, to evaluate the potential environmental impacts of the temporary dry storage of a cask containing Tritium- Producing Burnable Absorber Rods (TPBARs) in the Transfer Bay in K Area at the Savannah River Site (SRS). Based on the analyses in the EA, DOE has determined that the proposed action is not a major Federal action significantly affecting the quality of the

369

DOE/EA-1528: Environmental Assessment for the Storage of Tritium-Producing Burnable Absorber RODs in K-Area Transfer Bay at the Savannah River Site (6/2/05)  

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

28 28 JUNE 2005 U. S. DEPARTMENT OF ENERGY SAVANNAH RIVER OPERATIONS OFFICE SAVANNAH RIVER SITE ENVIRONMENTAL ASSESSMENT FOR THE STORAGE OF TRITIUM-PRODUCING BURNABLE ABSORBER RODS IN K-AREA TRANSFER BAY AT THE SAVANNAH RIVER SITE DOE/EA-1528 ENVIRONMENTAL ASSESSMENT FOR THE STORAGE OF TRITIUM-PRODUCING BURNABLE ABSORBER RODS IN K-AREA TRANSFER BAY AT THE SAVANNAH RIVER SITE June 2005 U. S. DEPARTMENT OF ENERGY SAVANNAH RIVER OPERATIONS OFFICE SAVANNAH RIVER SITE This page is intentionally left blank ii TABLE OF CONTENTS Page 1.0 INTRODUCTION 1 1.1 Background 1 1.2 Purpose and Need for Action 2 2.0 PROPOSED ACTION AND ALTERNATIVES 2 2.1 Proposed Action 2 2.2 Alternatives to the Proposed Action 3

370

Roles of double salt formation and NaNO{sub 3} in Na{sub 2}CO{sub 3}-promoted MgO absorbent for intermediate temperature CO{sub 2} removal  

Science Conference Proceedings (OSTI)

Absorption and desorption of carbon dioxide on Na{sub 2}CO{sub 3}-promoted MgO have been studied at temperatures compatible with warm gas cleanup (300–470 ?C) from a pre-combustion syngas. The absorbents are synthesized through the formation and activation of the precipitate resulting from the addition of sodium carbonate to an aqueous solution of magnesium nitrate. The absorbent, which comprises MgO, Na{sub 2CO{sub 3} and residual NaNO{sub 3} after activation, forms the double salt Na{sub 2}Mg(CO{sub 3}){sub 2} on exposure to CO{sub 2}. The thermodynamic properties of the double salt, obtained through computational calculation, predict that the preferred temperature range for absorption of CO{sub 2} with the double salt is significantly higher compared with MgO. Faster CO{sub 2} uptake can be achieved as a result of this higher temperature absorption window. Absorption tests indicate that the double salt absorbent as prepared has a capacity toward CO{sub 2} of 15 wt.% (3.4 mmol CO{sub 2}/g absorbent) and can be easily regenerated through both pressure swing and temperature swing absorption in multiple-cycle tests. Thermodynamic calculations also predict an important effect of CO{sub 2} partial pressure on the absorption capacity in the warm temperature range. The impurity phase, NaNO{sub 3}, is identified as a key component in facilitating CO{sub 2} absorption by these materials. The reason for reported difficulties in reproducing the performance of these materials can be traced to specific details of the synthesis method, which are reviewed in some detail.

Keling Zhanga,b, Xiaohong S. Li c, Yuhua Duand, David L. Kingc,?, Prabhakar Singha,b, Liyu Li

2012-11-12T23:59:59.000Z

371

Small non-polar complexes exhibiting significant piezoelectric properties: Solvothermal synthesis and crystal structures of MO{sub 5}V(tren){center_dot}H{sub 2}O (M=Mo and W; tren=tris(2-aminoethyl)amine)  

SciTech Connect

The two isostructural complexes MO{sub 5}V(tren){center_dot}H{sub 2}O (M=Mo (1) and W (2)) were synthesized under solvothermal conditions at pH Almost-Equal-To 12 crystallizing in the non-centrosymmetric space group P2{sub 1}2{sub 1}2{sub 1}. The structures are constructed by a distorted tetrahedral [MO{sub 4}]{sup 2-} anion bound via one shared oxygen atom to a severely distorted [V{sup IV}N{sub 4}O]{sup 2+} complex completing the octahedral coordination around the V centre. The two O atoms in the VN{sub 4}O{sub 2} octahedron are in cis position. The two compounds represent rare examples where the [MO{sub 4}]{sup 2-} anion is acting as a ligand. Both compounds exhibit a piezoelectric effect which is more pronounced for M=Mo. The samples are further characterized with IR and UV/Vis spectroscopy and thermal analysis. - Graphical abstract: The complexes [(V(tren)O)(MO4)]{center_dot}H2O (M = Mo, W; tren = tris(2-aminoethyl)amine)) composed of vertex-linked [MO4]{sup 2-} tetrahedron and [VN4O6]{sup 2+}octahedron. Highlights: Black-Right-Pointing-Pointer [MO{sub 4}]{sup 2-} tetrahedron (M=Mo, W) acting as ligand. Black-Right-Pointing-Pointer Jahn-Teller and steric distortion of the [VN{sub 4}O{sub 2}]{sup 2+} octahedron. Black-Right-Pointing-Pointer Non-centrosymmetric complexes exhibiting pronounced piezoelectric effect.

Rasmussen, M.; Naether, C. [Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany)] [Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany); Bismayer, U. [Mineralogisch-Petrographisches Institut, Universitaet Hamburg, Grindelallee 48 20146 Hamburg (Germany)] [Mineralogisch-Petrographisches Institut, Universitaet Hamburg, Grindelallee 48 20146 Hamburg (Germany); Bensch, W., E-mail: wbensch@ac.uni-kiel.de [Institut fuer Anorganische Chemie, Christian-Albrechts-Universitaet Kiel, Max-Eyth-Str. 2, D-24118 Kiel (Germany)

2012-11-15T23:59:59.000Z

372

Curriculum!Vitae! S.!Massoud!Amin!  

E-Print Network (OSTI)

by natural disasters, purposeful attack, or unusually high demand). When failures occur at various locations and thermal energy storage; n microgrids, ac and dc, including both self-contained, cellu- lar, and universal

Amin, S. Massoud

373

Amine-functionalized boron nitride nanotubes  

or posting on open internet sites, your personal or institution’s website or repository, are prohibited. For exceptions, permission

374

Amine-functionalized boron nitride nanotubes  

bDepartment of Physics, University of California, Berkeley, CA 94720, USA cDepartment of Chemistry, University of California, Berkeley, CA 94720, USA

375

Furanic Modified Amine-based Curatives  

Aromatic diamines are currently used as curatives in an array of applications such as polyurea and epoxies. When used as curatives, aromatic diamines have relatively short pot lives (gel times) due to their high reactivity, especially in reactions ...

376

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

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

to Sept 30, 2013 Lexington, KY 40506-0286 Post-Combustion CO2 Capture for Existing PC Boilers by Self-Concentrating Amine Absorbent The primary objective of this project is to...

377

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

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

101 Second Street, San Francisco,CA 94105 Post-Combustion CO2 Capture for Existing PC Boilers by Self-Concentrating Amine Absorbent System analysis, preliminary design, techno...

378

Optical properties of a solar-absorbing molten salt heat transfer fluid. [Eutectic mixture of KNO3, NaNO2, and NaNO3 with particle suspensions of cobalt oxides or copper oxides  

DOE Green Energy (OSTI)

The optical absorption properties of a high temperature molten salt heat transfer fluid were measured from 0.35 ..mu..m to 2.5 ..mu..m using both hemispherical transmission and reflection techniques. This fluid has application as a direct-absorbing working fluid in a high temperature central receiver solar energy facility. The absorption spectrum of the pure molten fluid--a eutectic mixture of KNO/sub 3/, NaNO/sub 2/, and NaNO/sub 3/, known as Hitec (Du Pont trade name)--displays a fundamental absorption edge near 410 nm, which was found to shift to longer wavelength linearly with temperature. Throughout the remainder of the visible spectrum, the fluid is transparent. To enhance its solar absorption, particulate metallic oxides of Co or Cu were introduced into the fluid. Absorption spectra of these oxide particle suspensions in the molten salt were determined as a function of dopant concentration ranging from 0 to 0.1 wt% metal nitrate added to the Hitec. These measurements were carried out at 200/sup 0/C under flow conditions to cause a homogeneous suspension of particles. Special transmission and reflection flow cells were designed and constructed to handle 200/sup 0/C fluids. The suspended particles cause an additional optical absorption throughout the visible spectrum which is characteristic of the particular metallic oxide and closely follows a Beer-Lambert concentration dependence. The solar averaged absorption in a fixed layer thickness was calculated for various concentrations of the fluid-oxide mixtures. The fluid without oxide particles absorbs approximately 8% of the solar spectrum per cm of path length. Addition of 0.1 wt% of Co(NO/sub 3/)/sub 2/.6H/sub 2/O increases this absorption to approximately 90% per cm. Of the oxides studied, Co/sub 3/O/sub 4/ particle suspensions offer better solar absorption characteristics than CuO. Effects of particulate scattering on the measurements are discussed.

Drotning, W.D.

1977-06-01T23:59:59.000Z

379

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

E-Print Network (OSTI)

797-932') Fig. 1 BERRY- SOLARSTRI P Cis= 0.96 I ta~=:' 0.1spectral reflectance for SolarStrip® and Maxorb® selectivesurfaces. SolarStrip® finish resembles the typical

Lampert, Carl M.

2013-01-01T23:59:59.000Z

380

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

Enhancement of Atmospheric Solar Heating from Forest FiresScale dependence of solar heating rates in convective cloudScale Dependence of Solar Heating Rates in Convective Cloud

Zhu, Aihua

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Coincident count rates in absorbing dielectric media  

E-Print Network (OSTI)

A study of the effects of absorption on the nonlinear process of parametric down conversion is presented. Absorption within the nonlinear medium is accounted for by employing the framework of macroscopic QED and the Green tensor quantization of the electromagnetic field. An effective interaction Hamiltonian, which describes the nonlinear interaction of the electric field and the linear noise polarization field, is used to derive the quantum state of the light leaving a nonlinear crystal. The signal and idler modes of this quantum state are found to be a superpositions of the electric and noise polarization fields. Using this state, the expression for the coincident count rates for both Type I and Type II conversion are found. The nonlinear interaction with the noise polarization field were shown to cause an increase in the rate on the order of 10^{-12} for absorption of 10% per cm. This astonishingly small effect is found to be negligible compared to the decay caused by linear absorption of the propagating modes. From the expressions for the biphoton amplitude it can be seen the maximally entangled states can still be produced even in the presence of strong absorption.

J. A. Crosse; Stefan Scheel

2010-12-03T23:59:59.000Z

382

Coincident count rates in absorbing dielectric media  

E-Print Network (OSTI)

A study of the effects of absorption on the nonlinear process of parametric down conversion is presented. Absorption within the nonlinear medium is accounted for by employing the framework of macroscopic QED and the Green tensor quantization of the electromagnetic field. An effective interaction Hamiltonian, which describes the nonlinear interaction of the electric field and the linear noise polarization field, is used to derive the quantum state of the light leaving a nonlinear crystal. The signal and idler modes of this quantum state are found to be a superpositions of the electric and noise polarization fields. Using this state, the expression for the coincident count rates for both Type I and Type II conversion are found. The nonlinear interaction with the noise polarization field were shown to cause an increase in the rate on the order of 10^{-12} for absorption of 10% per cm. This astonishingly small effect is found to be negligible compared to the decay caused by linear absorption of the propagating mo...

Crosse, J A

2010-01-01T23:59:59.000Z

383

Separators for absorbed electrolyte recombinant batteries  

SciTech Connect

Starved electrolyte gas recombinant batteries are a fast growing segment of the lead-acid market. There is a great deal of development being carried out using the recombinant technology. New batteries of this design have been commercialized this year and more will probably be introduced next year. All of these batteries are sealed so that they can operate above atmospheric pressure, and all of them contain a highly porous, and partially saturated glass microfiber separator. The separator is white, pliable, and ribless. The separator is the key element of these batteries since it permits gas recombination to take place. The recombination of gas within the battery makes it possible to seal the battery. The operation of these batteries is discussed.

Wandzy, K.J.; Taylor, G.W.

1986-07-01T23:59:59.000Z

384

Solar-absorber-selective paint research  

DOE Green Energy (OSTI)

Research and development on thickness-sensitive and thickness-insensitive solar paints are discussed. The thickness-sensitive paints include reverse roll coated, gravure printed, and spray coated paints. The coating methods and optical properties of the thickness-sensitive paints are discussed. The thickness-insensitive solar paints include a low emittance flake such as aluminium-flake, and pigment. Durability tests are discussed, including accelerated weathering and humidity durability tests, for the thickness-sensitive coatings. (LEW)

Moore, S.W.

1982-01-01T23:59:59.000Z

385

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

strong northwesterly offshore wind [Pease et al. , 1998],dusty air moves offshore blown by the easterly winds, it is

Zhu, Aihua

2010-01-01T23:59:59.000Z

386

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

fuel, biofuel and biomass combustion, organic carbon hasefficient combustion processes such as biomass burning haveincomplete combustion of fossil fuel and biomass burning. BC

Zhu, Aihua

2010-01-01T23:59:59.000Z

387

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

wind carries warm marine air mass from the Southern Hemisphere northward and brings moisture and precipitation over India

Zhu, Aihua

2010-01-01T23:59:59.000Z

388

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

resolved Radiative Transfer Model: MODTRAN……….131 APMEXModerate Imaging Spectroradiometer MODTRAN MODerate spectralprovide by MODTRAN…………………………………………………………………………133 Table 4.2

Zhu, Aihua

2010-01-01T23:59:59.000Z

389

Electrochemical Corrosion Testing of Neutron Absorber Materials  

Science Conference Proceedings (OSTI)

This report summarizes the results of crevice-corrosion tests for six alloys in solutions representative of ionic compositions inside the Yucca Mountain waste package should a breech occur. The alloys in these tests are Neutronit A978a (ingot metallurgy, hot rolled), Neutrosorb Plus 304B4 Grade Ab (powder metallurgy, hot rolled), Neutrosorb Plus 304B5 Grade Ab (powder metallurgy, hot rolled), Neutrosorb Plus 304B6 Grade Ab (powder metallurgy, hot rolled), Ni-Cr-Mo-Gd alloy2 (ingot metallurgy, hot rolled), and Alloy 22 (ingot metallurgy, hot rolled).

Tedd Lister; Ron Mizia; Arnold Erickson; Tammy Trowbridge

2007-05-01T23:59:59.000Z

390

New Gadolinium and Boron Containing Radiation Absorbing ...  

Science Conference Proceedings (OSTI)

At the capture of neutron in wide energy spectrum, the (n, ?) reaction takes place ... and Welding Conditions of Monopile and Transition for Offshore Wind Plant.

391

Study: Cells Selectively Absorb Short Nanotubes  

Science Conference Proceedings (OSTI)

... cells, while shorter lengths are able to penetrate the cell interior (dark ... Eyed for uses ranging from electronic displays to fuel cells to water filtration ...

2012-10-02T23:59:59.000Z

392

Radiative and climate impacts of absorbing aerosols  

E-Print Network (OSTI)

during SHADE: 1. Solar spectrum, J. Geophys. Res . , 108(sensed data in the solar spectrum, J. Geophys. Res , 106 (a scattering aerosol in the solar spectrum with a SSA=1 and

Zhu, Aihua

2010-01-01T23:59:59.000Z

393

Microstructural Characterization of Candidate Burnable Absorber ...  

Science Conference Proceedings (OSTI)

CASL: The Consortium for Advanced Simulation of Light Water Reactors: A U.S. ... Strategies for Studying High Dose Irradiation Effects in Reactor Components.

394

Page not found | Department of Energy  

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

601 - 9610 of 29,416 results. 601 - 9610 of 29,416 results. Download CX-008921: Categorical Exclusion Determination West Virginia Super Circuit CX(s) Applied: A9 Date: 08/24/2012 Location(s): North Carolina Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-008921-categorical-exclusion-determination Download CX-008923: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 08/24/2012 Location(s): Alabama Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-008923-categorical-exclusion-determination Download CX-008924: Categorical Exclusion Determination Building 28-33 External Electrical Upgrades CX(s) Applied: B1.23, B2.5, B4.6, B4.13

395

FE Categorical Exclusions | Department of Energy  

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

3, 2009 3, 2009 CX-000390: Categorical Exclusion Determination Transportation Route Survey in California CX(s) Applied: A1, A9, B3.1 Date: 11/13/2009 Location(s): Contra Costa County, CA Office(s): Fossil Energy, National Energy Technology Laboratory November 13, 2009 CX-000405: Categorical Exclusion Determination Carbon Dioxide Capture Using Novel Amine Technology and Sequestration by Injection into the Mount Simon Sandstone CX(s) Applied: A1, A9, B3.1 Date: 11/13/2009 Location(s): Decatur, Illinois Office(s): Fossil Energy, National Energy Technology Laboratory November 13, 2009 CX-000404: Categorical Exclusion Determination Aspen Environmental Group CX(s) Applied: A1, A9 Date: 11/13/2009 Location(s): San Francisco, California Office(s): Fossil Energy, National Energy Technology Laboratory

396

Categorical Exclusion (CX) Determinations By Date | Department of Energy  

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

3, 2009 3, 2009 CX-000207: Categorical Exclusion Determination NaSi (Sodium Silicide) and Na-SG (Sodium Silica Gell) Powder Hydrogen Fuel Cells CX(s) Applied: B3.6 Date: 11/23/2009 Location(s): New York Office(s): Energy Efficiency and Renewable Energy, Golden Field Office November 23, 2009 CX-000445: Categorical Exclusion Determination Sulfur Dioxide resistant Immobilized Amine Sorbents for Carbon Dioxide Capture CX(s) Applied: A9, A11, B3.1 Date: 11/23/2009 Location(s): Akron, Ohio Office(s): Fossil Energy, National Energy Technology Laboratory November 23, 2009 CX-000206: Categorical Exclusion Determination Michigan Biogas Center of Excellence CX(s) Applied: A9, B3.6 Date: 11/23/2009 Location(s): Flint, Michigan Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

397

Page not found | Department of Energy  

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

21 - 5830 of 29,416 results. 21 - 5830 of 29,416 results. Download CX-006278: Categorical Exclusion Determination Ultra Super Critical Autoclave CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Albany, Oregon Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-006278-categorical-exclusion-determination Download CX-006279: Categorical Exclusion Determination Novel Solid Amine Sorbent Dioxide Capture System CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Pittsburgh, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-006279-categorical-exclusion-determination Download CX-006281: Categorical Exclusion Determination Carolina Blue Skies Initiative CX(s) Applied: A1, B5.1 Date: 08/01/2011

398

FE Categorical Exclusions | Department of Energy  

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

, 2011 , 2011 CX-006286: Categorical Exclusion Determination Development of Advanced Systems for Preprocessing and Characterizing Coal-Biomass Mixtures CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Lexington, Kentucky Office(s): Fossil Energy, National Energy Technology Laboratory August 1, 2011 CX-006285: Categorical Exclusion Determination Development of Advanced Systems for Preprocessing and Characterizing Coal-Biomass Mixtures CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Blacksburg, Virginia Office(s): Fossil Energy, National Energy Technology Laboratory August 1, 2011 CX-006279: Categorical Exclusion Determination Novel Solid Amine Sorbent Dioxide Capture System CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Pittsburgh, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory

399

Page not found | Department of Energy  

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

91 - 7300 of 28,905 results. 91 - 7300 of 28,905 results. Download CX-006278: Categorical Exclusion Determination Ultra Super Critical Autoclave CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Albany, Oregon Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-006278-categorical-exclusion-determination Download CX-006279: Categorical Exclusion Determination Novel Solid Amine Sorbent Dioxide Capture System CX(s) Applied: B3.6 Date: 08/01/2011 Location(s): Pittsburgh, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-006279-categorical-exclusion-determination Download CX-006281: Categorical Exclusion Determination Carolina Blue Skies Initiative CX(s) Applied: A1, B5.1 Date: 08/01/2011

400

S. Massoud Amin, November 2010 1 Curriculum Vitae  

E-Print Network (OSTI)

mitigate outages during the harshest weather, terrorist attacks, or natural disasters. This system into IIT Main Campus's current infrastructure. The initiative's approach is to implement local microgrids

Moon, Jaekyun "Jae"

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Improvements in Mechanical Properties and Fatigue Life of Amine ...  

Science Conference Proceedings (OSTI)

Microstructural Investigation of Nano-Calcium Phosphates Doped with Fluoride Ions · Microstructure and Magnetoelectric Properties of Microwave Sintered ...

402

Corrosion in Amine Gas Treating: Findings of Laboratory ...  

Science Conference Proceedings (OSTI)

Alloy Development for Measurement While Drilling Tools ... Resistance of Type 2507 Duplex Stainless Steel in Synthetic Seawater and Hydraulic Fluids.

403

Future of the Grid Massoud Amin*, D.Sc.  

E-Print Network (OSTI)

..................................................................................................... 16 4.2.1. Non-Outage States .................................................................................................. 17 4.2.2. Outage States............................................................................. 19 5.1. Outage Restoration

Amin, S. Massoud

404

Designing Amine-Based CO2 Sorbents - A Computational and ...  

Science Conference Proceedings (OSTI)

Addressing Materials Processing Issues for USC Steam Turbines: Cast Versions of ... Co-Production of Pure Hydrogen and Electricity from Coal Syngas via the ...

405

Student Name Advisor Abdellah-El-Hadj, Amine Feng Liu  

E-Print Network (OSTI)

mkrstic@ucsd.edu Hernandez Jason Allan Abedania Juan Lasheras jlasheras@ucsd.edu Hernandez Mary Azucena Raymond De Callafon callafon@ucsd.edu Hernandez-Ibarra David Robert Bitmead rbitmead@ucsd.edu Hinden Name Mentor Mentor Email Malcolm Dustin Lee Hidenori Murakami hmurakami@ucsd.edu Malta Ramon Keiko

Mease, Kenneth D.

406

Novel Amine Enriched Solid Sorbents for Carbon Dioxide Capture  

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

include chemical absorption, physical and chemical adsorption, low-temperature distillation, gas-separation membranes, mineralizationbiomineralization, and vegetation. 1,2...

407

Page not found | Department of Energy  

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

91 - 4000 of 9,640 results. 91 - 4000 of 9,640 results. Download CX-007498: Categorical Exclusion Determination Subtask 6.1 - Strategic Studies CX(s) Applied: A9 Date: 12/06/2011 Location(s): North Dakota Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007498-categorical-exclusion-determination Download CX-007499: Categorical Exclusion Determination City of Las Vegas Electric Vehicle Program CX(s) Applied: A1 Date: 12/06/2011 Location(s): Nevada Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007499-categorical-exclusion-determination Download CX-007500: Categorical Exclusion Determination Carbon Absorber Retrofit Equipment (CARE) CX(s) Applied: B3.6 Date: 12/05/2011 Location(s): Colorado Offices(s): National Energy Technology Laboratory

408

Categorical Exclusion Determinations: A9 | Department of Energy  

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

13, 2011 13, 2011 CX-004983: Categorical Exclusion Determination Evaluation of a Spray Dryer Absorber for Multipollutant Control CX(s) Applied: A9, B3.6 Date: 01/13/2011 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory January 12, 2011 CX-005018: Categorical Exclusion Determination Facility Heating, Air Conditioning, and Ventilation System Conversion to Ground Source Heat Pump (Phase 2) CX(s) Applied: A9, B5.1, B5.3 Date: 01/12/2011 Location(s): Montana Office(s): Energy Efficiency and Renewable Energy, Golden Field Office January 12, 2011 CX-005014: Categorical Exclusion Determination Creating Green Talent in the Southwest CX(s) Applied: A9, B5.1 Date: 01/12/2011 Location(s): New Mexico Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

409

Categorical Exclusion (CX) Determinations By Date | Department of Energy  

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

5, 2011 5, 2011 CX-007789: Categorical Exclusion Determination Associated Electric Cooperative, Inc. Substation Improvements CX(s) Applied: B4.6 Date: 12/05/2011 Location(s): Missouri Offices(s): Southwestern Power Administration December 5, 2011 CX-007390: Categorical Exclusion Determination Hot Carrier Collection in Thin Film Silicon with Tailored Nanocrystalline/Amorphous Structure CX(s) Applied: B3.15, A9, B3.6 Date: 12/05/2011 Location(s): Colorado Offices(s): Golden Field Office December 5, 2011 CX-007500: Categorical Exclusion Determination Carbon Absorber Retrofit Equipment (CARE) CX(s) Applied: B3.6 Date: 12/05/2011 Location(s): Colorado Offices(s): National Energy Technology Laboratory December 3, 2011 CX-008674: Categorical Exclusion Determination ATK - A High Efficiency Inertial Carbon Dioxide Extraction System

410

Design and Evaluation of Ionic Liquids as Novel Absorbents  

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

- ionic liquids - for the capture of CO 2 from the flue gas from coal and natural gas-fired power plants. The success of ionic liquids technology will be based on...

411

Routes for Rapid Synthesis of Photovoltaic Absorber Materials ...  

Science Conference Proceedings (OSTI)

... Kyoung Kim, Tim Anderson (UF), Andrew Payzant (ORNL), Carelyn Campbell, Ursala Kattner (NIST), and Jianyun Shen ... Cd-free; dry, eliminate ...

2012-12-03T23:59:59.000Z

412

Routes for Rapid Synthesis of Photovoltaic Absorber Materials ...  

Science Conference Proceedings (OSTI)

... Krishnan, Gabriel Tong, Chris Muzzillo, Woo Kyoung Kim, Tim Anderson (UF), Andrew Payzant (ORNL), Carelyn Campbell ... Cd-free; dry, eliminate. ...

2012-10-04T23:59:59.000Z

413

Microstructure of Aluminum Matrix in Composite Absorber Block ...  

Science Conference Proceedings (OSTI)

Author(s), Donna Post Guillen, Jatuporn Burns. On-Site Speaker (Planned), Donna Post Guillen. Abstract Scope, Microstructure of a new metal matrix composite ...

414

Fiber optic moisture sensor with moisture-absorbing reflective target  

DOE Patents (OSTI)

A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

Kirkham, Randy R. (Richland, WA)

1987-01-01T23:59:59.000Z

415

BACKSCATTER GUAGE DESCRIPTION FOR INSPECTION OF NEUTRON ABSORBER AND UNIFORMITY  

SciTech Connect

This paper describes design, calibration, and testing of a dual He-3 detector neutron backscatter gauge for use in the Savannah River Site Mixed Oxide Fuel project. The gauge is demonstrated to measure boron content and uniformity in concrete slabs used in the facility construction.

Dewberry, R.; Gibbs, K.; Couture, A.

2012-05-23T23:59:59.000Z

416

On the Incidence and Kinematics of Strong Mg II Absorbers  

E-Print Network (OSTI)

We present the results of two investigations into the nature of strong (rest equivalent width > 1.0 Ang) Mg II absorption systems at high redshift. The first line of questioning examines the complete SDSS- DR3 set of quasar spectra to determine the evolution of the incidence of strong Mg II absorption. The redshift evolution of the comoving line-of-sight number density, l(x), is characterized by a roughly constant value at z > 0.8, indicating that the product of the number density and gas cross-section of halos hosting strong Mg II is unevolving at these redshifts. At z gas cross-section to strong Mg II absorption and therefore a decline in the physical processes relevant to such absorption. This evolution roughly tracks the global evolution of the SFR density. The decrease of l(x) is more pronounced for larger equivalent width systems. We also present the results of a search for strong Mg II absorption in 91 high resolution quasar spectra, which allow us to investigate the kinematics of such systems. These systems are characterized by the presence of numerous components spread over a ~200 km/s velocity width and the presence of more highly ionized species, which display kinematic profiles similar to the corresponding Mg II absorption. We consider these results in light of two competing theories to explain strong Mg II absorption: post-starburst, SN-driven galactic winds and accreting gas in the halos of massive galaxies. The later model is disfavored by the absence of evolution in l(x) at z > 1. We argue that the strong Mg II phenomenon primarily arises from feedback processes in relatively low mass galactic halos related to star formation.

Gabriel E. Prochter; Jason X. Prochaska; Scott Burles

2004-11-29T23:59:59.000Z

417

An Absorbed-Dose/Dose-Rate Dependence for the Alanine ...  

Science Conference Proceedings (OSTI)

... Natl. Inst. Stand. Technol. 99, 121-141 (1994). [3] JC Humphreys, JM Puhl, SM Seltzer, WL McLaughlin, MF Desrosiers, DL Bensen, and ML Walker ...

2008-05-06T23:59:59.000Z

418

MHK Technologies/Oxygen Releasing and Carbon Absorbing Ocean...  

Open Energy Info (EERE)

and distribution infrastructure 3 provision for a gradual transition to widespread electric vehicle use 4 avoidance of environmental destruction and visual impairment with...

419

Scientists Identify New Quaternary Materials for Solar Cell Absorbers...  

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

insight for exploring use of Earth- abundant quaternary semiconductors for large-scale solar cell applications. For large-scale solar electricity generation, it is critical to...

420

A Sensitivity Study for a MICE Liquid Hydrogen Absorber  

E-Print Network (OSTI)

The International Muon Ionization Cooling Experiment (MICE) is devoted to a study of a muon cooling channel capable of giving the desired performance for a Neutrino Factory. One of the goals is achieving an absolute accuracy of measurements of emittance reduction as high as ±0.1%. The paper describes results of a Monte Carlo study on allowed density variations of liquid hydrogen corresponding to the desired accuracy of the measurements. 1

D. Errede; I. Rakhno

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Radar absorption properties of radar absorbing structures composite ...  

Science Conference Proceedings (OSTI)

Geometry Dependence of the Strain-driven Self-rolling of Semiconductor Nanotubes · Gold Nano-Engineered Mercury Sensor for Alumina Refineries.

422

Hydrogen and moisture getter and absorber for sealed devices  

DOE Patents (OSTI)

The present invention is a hydrogen getter and method for formulating and using the getter. This getter effectively removes hydrogen gas typically present in many hermetically-sealed electronic applications where the presence of such gas would otherwise be harmful to the electronics. The getter is a non-organic composition, usable in a wide range of temperatures as compared to organic getters. Moreover, the getter is formulated to be used without the need for the presence of oxygen. The getter is comprised of effective amounts of an oxide of a platinum group metal, a desiccant, and a gas permeable binder which preferably is cured after composition in an oxygen-bearing environment at about 150 to about 205 degrees centigrade.

Smith, Henry M. (Overland Park, KS); Schicker, James R. (Lee' s Summit, MO)

1999-03-30T23:59:59.000Z

423

MICROSTRUCTURE ON A BLACK CHROME SOLAR SELECTIVE ABSORBER  

E-Print Network (OSTI)

Meeting of International Solar Energy Society, AmericanPhoto-Thermal Conversion of Solar Energy," NSF'/RANN/SE/GI-a Solar Selective Coating," Solar Energy, VoL 17, p.ll9. 2.

Lampert, Carl M.

2011-01-01T23:59:59.000Z

424

Neutron Detection Using an Embedded Sol-Gel Neutron Absorber  

on sol-gel chemistry, uses metallic oxides embedded in a glass film that fission when bombarded with neutrons, producing a signature event in the ...

425

A Sensitivity study for a MICE liquid hydrogen absorber  

DOE Green Energy (OSTI)

The International Muon Ionization Cooling Experiment (MICE) is devoted to a study of a muon cooling channel capable of giving the desired performance for a Neutrino Factory. One of the goals is achieving an absolute accuracy of measurements of emittance reduction as high as {+-} 0.1%. The paper describes results of a Monte Carlo study on allowed density variations of liquid hydrogen corresponding to the desired accuracy of the measurements.

Errede, D.; /Illinois U., Urbana; Rakhno, I.; /Illinois U., Urbana /Fermilab

2004-11-01T23:59:59.000Z

426

Neutron detector using sol-gel absorber - Energy Innovation Portal  

An neutron detector composed of fissionable material having ions of lithium, uranium, thorium, plutonium, or neptunium, contained within a glass film fabricated using ...

427

Compound parabolic concentrator with cavity for tubular absorbers  

DOE Patents (OSTI)

A compond parabolic concentrator with a V-shaped cavity is provided in which an optical receiver is emplaced. The cavity redirects all energy entering between the receiver and the cavity structure onto the receiver, if the optical receiver is emplaced a distance from the cavity not greater than 0.27 r (where r is the radius of the receiver).

Winston, Roland (5217C S. University Ave., Chicago, IL 60615)

1983-01-01T23:59:59.000Z

428

Development of Neutron Absorbers to Support Disposal of DOE SNF  

SciTech Connect

The National Spent Nuclear Fuel Program, located at the Idaho National Engineering and Environmental Laboratory, coordinates and integrates national efforts in management and disposal of U.S. Department of Energy (DOE)- owned . These management functions include using the DOE standardized canister for packaging, storage, treatment, transport, and long-term disposal. Nuclear criticality control measures are needed in these canisters because of the enrichment and total quantity of fissile material in some types of the DOE spent nuclear fuel. This paper will report the test results of one alloy heat from a metallurgical development program that is developing nickelchromium- molybdenum-gadolinium alloys for nuclear criticality control in the DOE standardized canister. Gadolinium has been chosen as the neutron absorption alloying element due to its high thermal neutron absorption cross section. The microstructure, mechanical properties, and corrosion resistance of various alloys will be presented. These corrosion resistant, structural alloys can be used to fabricate components of spent nuclear fuel storage racks, storage canisters and internal structural baskets, and transportation cask internals. The focus of this work is to qualify these materials for American Society of Mechanical Engineers code qualification and acceptance in the Yucca Mountain Repository.

Hurt, William Lon; Mizia, Ronald Eugene; T. E. Lister; P. J. Pinhero; Robino, C. V.; J. N. Dupont

2003-03-01T23:59:59.000Z

429

Development of a Weldable Neutron Absorbing Structural Material  

Science Conference Proceedings (OSTI)

The National Spent Nuclear Fuel Program, located at the Idaho National Laboratory, coordinates and integrates national efforts in management and disposal of U.S. Department of Energy (DOE)-owned spent nuclear fuel. These management functions include development of standardized systems for packaging, storage, treatment, transport, and long-term disposal in the proposed Yucca Mountain Repository. Nuclear criticality control measures are needed in these systems to avoid restrictive fissile loading limits because of the enrichment and total quantity of fissile material in some types of the DOE spent nuclear fuel. This paper will outline the results to date of a metallurgical development program that is investigating the alloying of gadolinium into a nickel-chromium-molybdenum alloy matrix. Gadolinium has been chosen as the neutron absorption alloying element due to its high thermal neutron absorption cross section and low solubility in the expected repository environment. The nickel-chromium-molybdenum alloy family was chosen for its known corrosion performance, mechanical properties, and weldability. The workflow of this program includes chemical composition definition, primary melting and secondary refining studies, ingot conversion process evaluations, mechanical/physical properties and corrosion testing, welding studies, and national consensus codes, and standards work.

R. E. Mizia; W. L. Hurt; C. V. Robino; J. N. DuPont

2006-04-01T23:59:59.000Z

430

LHC Accelerator Design Studies on the Example of Passive Absorbers  

Science Conference Proceedings (OSTI)

Accelerators / Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (PART 3) / Radiation Protection

M. Brugger; F. Cerutti; A. Ferrari; L. Lari; M. Mauri; S. Roesler; L. Sarchiapone; V. Vlachoudis

431

MICROSTRUCTURE ON A BLACK CHROME SOLAR SELECTIVE ABSORBER  

E-Print Network (OSTI)

absorp- tance in the solar spectrum while exhibiting thereflectance, the solar spectrum and blackbody spectrum ( 100the air mass 1 solar terrestrial spectrum ) and l00°C, 300°C

Lampert, Carl M.

2011-01-01T23:59:59.000Z

432

Carbon dioxide absorbent and method of using the same  

DOE Patents (OSTI)

In accordance with one aspect, the present invention provides an amino-siloxane composition comprising at least one of structures I, II, III, IV or V said compositions being useful for the capture of carbon dioxide from gas streams such as power plant flue gases. In addition, the present invention provides methods of preparing the amino-siloxane compositions are provided. Also provided are methods for reducing the amount of carbon dioxide in a process stream employing the amino-siloxane compositions of the invention as species which react with carbon dioxide to form an adduct with carbon dioxide. The reaction of the amino-siloxane compositions provided by the present invention with carbon dioxide is reversible and thus, the method provides for multicycle use of said compositions.

Perry, Robert James (Niskayuna, NY); Lewis, Larry Neil (Scotia, NY); O' Brien, Michael Joseph (Clifton Park, NY); Soloveichik, Grigorii Lev (Latham, NY); Kniajanski, Sergei (Clifton Park, NY); Lam, Tunchiao Hubert (Clifton Park, NY); Lee, Julia Lam (Niskayuna, NY); Rubinsztajn, Malgorzata Iwona (Ballston Spa, NY)

2011-10-04T23:59:59.000Z

433

Neutron Detection Using an Embedded Sol-Gel Neutron Absorber ...  

Using ultraviolet light, fission products of the metallic oxides and electron emissions can be quickly detected. Skip to Content. Skip to Content.

434

Neutron Detection Using an Embedded Sol-Gel Neutron Absorber  

ultraviolet light, fission products of the metallic oxides and electron emissions can ... • An adaptable fission signature that can be read in several ways

435

Second annual conference on absorber surfaces for solar receivers  

DOE Green Energy (OSTI)

Sixteen papers are included. Three were previously abstracted for EDB. Separate abstracts were prepared for thirteen. (MHR)

Call, P. J. [ed.

1979-01-01T23:59:59.000Z

436

Characterization of 19.9% Efficient CIGS Absorbers: Preprint  

DOE Green Energy (OSTI)

This paper documents the properties of the world-record-efficiency CIGS solar cell by a variety of characterization techniques, with an emphasis on identifying near-surface properties associated with the modified processing.

Repins, I.; Contreras, M.; Romero, M.; Yan, Y.; Metzger, W.; Li, J.; Johnston, S.; Egass, B.; DeHart, C.; Scharf, J.; McCandless, B. E.; Noufi, R.

2008-05-01T23:59:59.000Z

437

Disposable Absorbent Material for the Removal of Arsenic from Water  

Science Conference Proceedings (OSTI)

Soils and groundwater at many substation sites are contaminated with arsenic-containing compounds. Cost effective water treatment technologies are needed to remove arsenic and other trace metals from underlying aquifers, especially now that drinking water standard for arsenic has been lowered to 10 g/L from the previous value of 50 g/L. The current project tested a disposable ferric oxide adsorbent material, Bayoxide E33, which has been reported to have a high capacity for arsenic removal.

2008-09-10T23:59:59.000Z

438

MICROSTRUCTURE ON A BLACK CHROME SOLAR SELECTIVE ABSORBER  

E-Print Network (OSTI)

Engineering College of Engineering; University of CaliforniaBerkeley, California 94720 The structure of Harshaw

Lampert, Carl M.

2011-01-01T23:59:59.000Z

439

Chapter 6: Simulation of ... absorbers: the behaviour of methanol and non-equilibrium stage modeling. Simulation of industrial formaldehyde absorbers  

E-Print Network (OSTI)

jobshavebeenwrittenonourVB6UHR EWF lithography tool during the past year. Working with industry Working through the James

Groningen, Rijksuniversiteit

440

Page not found | Department of Energy  

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

91 - 1400 of 28,905 results. 91 - 1400 of 28,905 results. Download CX-007099: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: A9, A11 Date: 10/13/2011 Location(s): Germany, Other Location, California, New Jersey, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007099-categorical-exclusion-determination Download CX-001312: Categorical Exclusion Determination State Facilities Retrofit Program: Commissioning/Re-Commissioning and Metering Projects CX(s) Applied: A9, A11, B5.1 Date: 03/18/2010 Location(s): Georgia Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-001312-categorical-exclusion-determination

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Page not found | Department of Energy  

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

71 - 4280 of 9,640 results. 71 - 4280 of 9,640 results. Download CX-008922: Categorical Exclusion Determination Design and Construction of the Site Preparation and Foundation Work for the NCCC CX(s) Applied: B3.6 Date: 08/24/2012 Location(s): Alabama Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-008922-categorical-exclusion-determination Download CX-008923: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 08/24/2012 Location(s): Alabama Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-008923-categorical-exclusion-determination Download CX-008924: Categorical Exclusion Determination Building 28-33 External Electrical Upgrades

442

Page not found | Department of Energy  

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

51 - 15160 of 26,764 results. 51 - 15160 of 26,764 results. Download CX-007065: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 10/18/2011 Location(s): Wilsonville, Alabama Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007065-categorical-exclusion-determination Download CX-007067: Categorical Exclusion Determination Alabama State Energy Program - Energy Revolving Loan Program CX(s) Applied: A1, B5.1 Date: 10/14/2011 Location(s): Vinemont, Alabama Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007067-categorical-exclusion-determination

443

Categorical Exclusion Determinations: Alabama | Department of Energy  

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

October 18, 2011 October 18, 2011 CX-007065: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 10/18/2011 Location(s): Wilsonville, Alabama Office(s): Fossil Energy, National Energy Technology Laboratory October 18, 2011 CX-007066: Categorical Exclusion Determination Interstate Electrification Improvement CX(s) Applied: B5.1 Date: 10/18/2011 Location(s): Alabama, Arizona, California, Florida, Iowa, Kansas, Massachusetts, Michigan, Missouri, Montana, New Mexico, New York, North Carolina, Texas, Utah, Virginia, Washington, Wyoming Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory October 14, 2011 CX-007067: Categorical Exclusion Determination

444

Page not found | Department of Energy  

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

31 - 15040 of 26,764 results. 31 - 15040 of 26,764 results. Download CX-007099: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: A9, A11 Date: 10/13/2011 Location(s): Germany, Other Location, California, New Jersey, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007099-categorical-exclusion-determination Download CX-006934: Categorical Exclusion Determination Alternative High-Performance Motors with Non-Rare Earth Materials CX(s) Applied: B3.6 Date: 09/28/2011 Location(s): Colorado, Iowa, New York, North Carolina, Ohio, Tennessee, Wisconsin Office(s): Energy Efficiency and Renewable Energy http://energy.gov/nepa/downloads/cx-006934-categorical-exclusion-determination

445

FE Categorical Exclusions | Department of Energy  

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

Categorical Exclusions Categorical Exclusions FE Categorical Exclusions RSS October 13, 2011 CX-007099: Categorical Exclusion Determination Slipstream Pilot-Scale Demonstration of a Novel Amine-Based Post-Combustion Technology for Carbon Dioxide Capture CX(s) Applied: A9, A11 Date: 10/13/2011 Location(s): Germany, Other Location, California, New Jersey, Pennsylvania Office(s): Fossil Energy, National Energy Technology Laboratory October 12, 2011 CX-007108: Categorical Exclusion Determination Energy-Saving Opportunities in Water Treatment and Distribution CX(s) Applied: B3.6 Date: 10/12/2011 Location(s): Grand Forks, Grand Forks County, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory October 12, 2011 CX-007107: Categorical Exclusion Determination Development of Novel Carbon Sorbents for Carbon Dioxide Capture

446

Page not found | Department of Energy  

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

21 - 5130 of 28,905 results. 21 - 5130 of 28,905 results. Download CX-000405: Categorical Exclusion Determination Carbon Dioxide Capture Using Novel Amine Technology and Sequestration by Injection into the Mount Simon Sandstone CX(s) Applied: A1, A9, B3.1 Date: 11/13/2009 Location(s): Decatur, Illinois Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-000405-categorical-exclusion-determination Download CX-000394: Categorical Exclusion Determination Carbon Capture and Sequestration (by Enhance Oil Recovery) Project Phase 1 CX(s) Applied: A1, A9, B3.1 Date: 11/12/2009 Location(s): Texas City, Texas Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-000394-categorical-exclusion-determination

447

NETL: IEP - Post-Combustion CO2 Emissions Control - Post-Combustion CO2  

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

Post-Combustion CO2 Capture for Existing PC Boilers by Self-concentrating Amine Absorbent Post-Combustion CO2 Capture for Existing PC Boilers by Self-concentrating Amine Absorbent Project No.: DE-FE0004274 3H Company will evaluate the feasibility of its "Self-Concentrating Absorbent CO2 Capture Process." The process is based on amines in a non-aqueous solvent which, upon reaction with CO2, separate into two distinct phases: a CO2-rich liquid phase and a dilute lean phase. The proposed process offers several potential advantages. Preliminary experimental data show that the process has the potential of reducing the total regeneration energy by as much as 70 percent. The solvent has high working capacity, thus required solvent volume would be lower than that required in a currently available amine system. This results in lower pumping requirements, lower auxiliary power demands, and reduced equipment size. In addition, since the solvent is non-aqueous, corrosion issues would be reduced. During the three-year project, an engineering design supported by laboratory data and economic justification will be developed to construct and operate a slipstream demonstration facility at an E-ON power plant in the United States as a next stage of commercialization development.

448

NETL: Gasification  

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

Sulfur Recovery and Tail Gas Treating Sulfur Recovery and Tail Gas Treating SCOT Tail Gas Treating Figure 1 shows a simplified SCOT tail gas treating unit (TGTU). Tail gas from the Claus SRU is heated in an in-line burner before entering the hydrogenation reactor, where all sulfur species are converted to H2S. Hydrogenation reactor effluent is then cooled by generating low pressure (LP) steam, followed by additional cooling by cooling water exchange. Residual H2S in the cooled tail gas is removed with amine in a counter-current packed absorber. The treated tail gas from the absorber top is incinerated before being vented to the atmosphere. The rich solvent from the amine absorber is pumped to the regenerator after heat exchange against the hot lean solvent from the regenerator. Acid gases are stripped from the solvent in the trayed regenerator via a steam reboiler. The hot lean solvent from the regenerator bottom is pumped back to the absorber after being heat exchanged with rich solvent and cooling water to lower its temperature. Acid gas from TGTU amine regenerator overhead is recycled back to the Claus plant for sulfur recovery.

449

Palladium/kieselguhr composition and method  

DOE Patents (OSTI)

Disclosed is a hydrogen-absorbing composition and method for making such a composition. The composition comprises a metal hydride, preferably palladium, deposited onto a porous substrate such as kieselguhr, for use in hydrogen-absorbing processes. The composition is made by immersing a substrate in a concentrated solution containing palladium, such as tetra-amine palladium nitrate. Palladium from the solution is deposited onto the porous substrate, which is preferably in the form of kieselguhr particles. The substrate is then removed from the solution, calcined, and heat treated. This process is repeated until the desired amount of palladium has been deposited onto the substrate.

Mosley, W.C. Jr.

1992-12-31T23:59:59.000Z

450

Palladium/kieselguhr composition and method  

DOE Patents (OSTI)

A hydrogen-absorbing composition and method for making such a composition are described. The composition comprises a metal hydride, preferably palladium, deposited onto a porous substrate such as kieselguhr, for use in hydrogen-absorbing processes. The composition is made by immersing a substrate in a concentrated solution containing palladium, such as tetra-amine palladium nitrate. Palladium from the solution is deposited onto the porous substrate, which is preferably in the form of kieselguhr particles. The substrate is then removed from the solution, calcined, and heat treated. This process is repeated until the desired amount of palladium has been deposited onto the substrate.

Mosley, W.C. Jr.

1993-09-28T23:59:59.000Z

451

Page not found | Department of Energy  

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

61 - 12170 of 28,560 results. 61 - 12170 of 28,560 results. Download CX-005037: Categorical Exclusion Determination Field Test of Carbon Dioxide-Methane Method for Production of Gas Hydrate CX(s) Applied: B3.7 Date: 01/14/2011 Location(s): North Slope Borough, Alaska Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-005037-categorical-exclusion-determination Download CX-004983: Categorical Exclusion Determination Evaluation of a Spray Dryer Absorber for Multipollutant Control CX(s) Applied: A9, B3.6 Date: 01/13/2011 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-004983-categorical-exclusion-determination Download CX-004985: Categorical Exclusion Determination

452

Page not found | Department of Energy  

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

71 - 21880 of 31,917 results. 71 - 21880 of 31,917 results. Download CX-007500: Categorical Exclusion Determination Carbon Absorber Retrofit Equipment (CARE) CX(s) Applied: B3.6 Date: 12/05/2011 Location(s): Colorado Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007500-categorical-exclusion-determination Download CX-007584: Categorical Exclusion Determination Demonstration of Gas-Powered Drilling Operations for Economically Challenged Wellhead Gas and Evaluation of Complementary Platforms CX(s) Applied: A1, A9, B3.6, B5.1 Date: 12/29/2011 Location(s): North Dakota Offices(s): National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-007584-categorical-exclusion-determination Download CX-007585: Categorical Exclusion Determination Minnesota E85 Fueling Network Expansion Project

453

Research Challenges for the Security of Control Systems Alvaro A. Cardenas Saurabh Amin  

E-Print Network (OSTI)

analysis attacks. · Modbus security issues: A SCADA protocol of note- worthy concern is the Modbus protocol

Sastry, S. Shankar

454

30 IEEE power & energy magazine july/august 2004 by Massoud Amin  

E-Print Network (OSTI)

of customers every few weeks or months, while larger outages occur every two to nine years and affect mil for reliable and disturbance-free electricity. The massive power outages in the United States, Canada, United-scale conglomerate. Over the last decade and during the next few years, the electric enter- prise will undergo

Amin, S. Massoud

455

Regenerable Sorbent Technique for Capturing CO2 Using Immobilized Amine Sorbents  

This technology allows for optimal CO2 removal capacity for a given absorption and regeneration reactor size. Management of water loading in this ...

456

Requirement for vasoactive amines for production of delayed-type hypersensitivity skin reactions  

E-Print Network (OSTI)

Injection of antigen into the dermis of the flank of an appropriately immunized rat, guinea pig, monkey, or man results, 24-48 h later, in the formation of an erythematous, indurated lesion. Similar skin testing of immunized mice generally fails to produce such lesions (1-3). The explanation for this particular difference between mice and men is unknown but there is reason to believe that it may not stem from differences in immunologically competent cells. Two observations support this view. (a) Appropriately immunized mice exhibit antigen-specific delayed-type hypersensitivity (DTH) ' reactions when the site of elicitation is the foot pad (4) or the ear (5). (b) Mice exhibit most other manifestations of cell-mediated immunity, in a normal fashion, despite their failure to produce DTH reactions in the flank skin. Thus, mice must have appropriately reactive T cells but there may be some difficulty in delivering the cells required for the production of DTH reactions to the flank skin. In support of this notion, it has been shown that ifperitoneal exudate cells are added to the eliciting dose of antigen placed in the flank skin the lesions that result are morphologically

K. Gershon; Philip W. Askenase; Michael; D. Gershon

1975-01-01T23:59:59.000Z

457

Advanced High Energy and High Power Battery Systems for Automotive Applications Khalil Amine  

E-Print Network (OSTI)

materials for lithium ion battery Prof. Hua Kun Liu, Dr. Zaiping Guo Mrs. Nurul Idris Nanomaterials for lithium rechargeable batteries Prof. Hua Kun Liu, Dr. Jiazhao Wang Mr. Mohammad Ismail Hydrogen storage. Rong Zeng Mr. Hao Liu Nanostructured materials for lithium ion batteries Dr. Guoxiu Wang, Prof. Chao

Levi, Anthony F. J.

458

Program on Technology Innovation: Evaluation of Amine-Based, Post-Combustion CO2 Capture Plants  

Science Conference Proceedings (OSTI)

In response to concerns over global warming, technologies need to be developed that capture and store the CO2 released by fossil- fueled power plants. A study carried out in 2000 by Parsons and co-funded by the US-DOE and EPRI investigated the thermal and economic performance of supercritical pulverized coal (PC) combustion, E-Gas integrated gasification combined cycle (IGCC), and natural gas combined cycle power plants with and without CO2 removal. The general conclusion was that for power plants with C...

2005-11-21T23:59:59.000Z

459

Stereoconvergent Amine-Directed Alkyl–Alkyl Suzuki Reactions of Unactivated Secondary Alkyl Chlorides  

E-Print Network (OSTI)

A new family of stereoconvergent cross-couplings of unactivated secondary alkyl electrophiles has been developed, specifically, arylamine-directed alkyl–alkyl Suzuki reactions. This represents the first such investigation ...

Lu, Zhe

460

Asymmetric synthesis of amines by the catalytic enantioselective additions of hydrazoic acid to ketenes  

E-Print Network (OSTI)

The development of a planar-chiral catalyst for the enantioselective additions of HN3 to hindered ketenes was investigated. It was demonstrated that a new planar-chiral catalyst (1.5) is an excellent catalyst for the ...

Nakai, Takashi, S.M. Massachusetts Institute of Technology

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" 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

Competition between Covalent and Noncovalent Bond Cleavages in Dissociation of Phosphopeptide-Amine Complexes  

DOE Green Energy (OSTI)

Interactions between quaternary amino or guanidino groups with anions are ubiquitous in nature. Here, we present a first study focused on quantifying such interactions using complexes of phosphorylated A3pXA3-NH2 (X=S, T, Y) peptides with decamethonium (DCM) or diaguanidinodecane (DGD) ligands as model systems. Time- and collision energy-resolved surface-induced dissociation (SID) of the singly charged complexes was examined using a specially configured Fourier transform ion cyclotron resonance mass spectrometer (FTICR-MS). Dissociation thresholds and activation energies were obtained from RRKM modeling of the experimental data that has been described and carefully characterized in our previous studies. We demonstrate that covalent bond cleavages resulting in phosphate abstraction by the cationic ligand are characterized by low dissociation thresholds and relatively tight transition states. In contrast, high dissociation barriers and large positive activation entropies were obtained for cleavages of non-covalent bonds. Dissociation parameters obtained from the modeling of the experimental data are in excellent agreement with the results of density functional theory (DFT) calculations. Comparison between the experimental data and theoretical calculations indicate that phosphate abstraction by the ligand is rather localized and mainly affected by the identity of the phosphorylated side chain. The hydrogen bonding in the peptide and ligand properties play a minor role in determining the energetics and dynamics of the phosphate abstraction channel

Laskin, Julia; Yang, Zhibo; Woods, Amina S.

2011-04-21T23:59:59.000Z

462

Self-Assembly of Gold Nanoparticles at the Surface of Amine- and ...  

showed that there was negligible assembly of the gold nano-particles at the surface of the BNNTs (Figure 10). Both control experiments demonstrate a significant lack of

463

Maturation of the angiotensin II cardiovascular response in the embryonic White Leghorn chicken (Gallus gallus)  

E-Print Network (OSTI)

for this peptide to cause catechol- amine release fromchanges in plasma catechol- amine concentrations during

Crossley, Dane A.; Jonker, Sonnet S.; Hicks, James W.; Thornburg, Kent L.

2010-01-01T23:59:59.000Z

464

Evaluation of neutron absorbers for the melt-dilute treatment of aluminum-based spent fuel  

SciTech Connect

Aluminum-based spent nuclear fuel (Al-SNF) from foreign and domestic research reactors is being consolidated at the Savannah River Site (SRS) for ultimate disposal in the Mined Geologic Disposal System (MGDS). Most of the aluminum-based fuel material contains highly enriched uranium (HEU) (greater than 20 percent {sup 235}U), which poses a proliferation risk and challenges the preclusion of criticality events for disposal periods exceeding 10,000 years.

Vinson, D.W.

2000-03-31T23:59:59.000Z

465

Design, experiment, and analysis of a photovoltaic absorbing medium with intermediate levels .  

E-Print Network (OSTI)

??The absorption of the sun's radiation and its efficient conversion to useful work by a photovoltaic solar cell is of interest to the community at… (more)

Levy, Michael Yehuda

2008-01-01T23:59:59.000Z

466

Nuclear safety of critical assemblies with a neutron absorber in a cavity  

Science Conference Proceedings (OSTI)

Full-scale direct calculations were made of the energy release in various highly ..... the latent autocatalysis effect manifests itself with particular intensity in critical  ...

467

Accelerated Testing of Neutron-Absorbing Alloys for Nuclear Criticality Control  

Science Conference Proceedings (OSTI)

Special Issue Technical Paper / Second Seminar on Accelerated Testing of Materials in Spent Nuclear Fuel and High-Level Waste Storage Systems / Materials for Nuclear Systems

R. E. Mizia; T. E. Lister

468

Absorbing More of the Rainbow with Polymer-Based Organic Photovoltaics...  

Office of Science (SC) Website

Energy Nanoscience where a novel class of polymers was recently introduced into organic solar cells to improve and extend their light harvesting ability and to attain new highs in...

469

Surface Modification of Fuel Cladding Materials with Integral Fuel BUrnable Absorber Boron  

Science Conference Proceedings (OSTI)

Integral fuel burnable absorgers (IFBA) are added to some rods in the fuel assembly to counteract excessive reactivity. These IFBA elements (usually boron or gadolinium) are presently incorporated in the U)2 pellets either by mixing in the pellets or as coatings on the pellet surface. In either case, the incorporation of ifba into the fuel has to be performed in a nuclear-regulated facility that is physically separated from the main plant. These operations tend to be costly and can add from 20 to 30% to the manufacturing cost of the fuel. The goal of this NEER research project was to develop an alternative approach that involves incorporation of IFBA element boron at the surface of the fuel cladding material.

Dr. Kumar Sridharan; Dr. Todd Allen; Jesse Gudmundson; Benjamin Maier

2008-11-03T23:59:59.000Z

470

Behavior of Tritium in the Mouse Body After Oral Intake and Estimation of the Absorbed Dose  

Science Conference Proceedings (OSTI)

Biology / Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001

Masahiro Saito

471

Portable capillary electrophoresis system with LED-absorbance photometric and LED-induced fluorescence detection.  

E-Print Network (OSTI)

?? Capillary electrophoresis (CE) has a wide range of applications in the field of analytical chemistry. In general the most expensive part in a CE… (more)

Stjernlöf, Anna

2008-01-01T23:59:59.000Z

472

Study on Water Absorbing Behavior of Fine Ore for Sintering Process  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , TMS2014 General Poster Session. Presentation Title, Study on Water ...

473

The absorbent's solution flow process, non-parametric identification into an absorption chiller for air conditioning  

Science Conference Proceedings (OSTI)

The lithium bromide chillers supplied from solar collectors are used to provide proper environmental conditions into industrial and civil buildings. To maintain the appropriate values for the temperature into the chiller's boiler, a control unit is introduced ... Keywords: absorption chiller, flow process, system identification

Adrian Danila

2011-04-01T23:59:59.000Z

474

Casimir force for absorbing media in an open quantum system framework: Scalar model  

SciTech Connect

In this article we compute the Casimir force between two finite-width mirrors at finite temperature, working in a simplified model in 1+1 dimensions. The mirrors, considered as dissipative media, are modeled by a continuous set of harmonic oscillators which in turn are coupled to an external environment at thermal equilibrium. The calculation of the Casimir force is performed in the framework of the theory of open quantum systems. It is shown that the Casimir interaction has two different contributions: the usual radiation pressure from the vacuum, which is obtained for ideal mirrors without dissipation or losses, and a Langevin force associated with the noise induced by the interaction between dielectric atoms in the slabs and the thermal bath. Both contributions to the Casimir force are needed in order to reproduce the analogous Lifshitz formula in 1+1 dimensions. We also discuss the relationship between the electromagnetic properties of the mirrors and the spectral density of the environment.

Lombardo, Fernando C.; Rubio Lopez, Adrian E. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA and IFIBA CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Mazzitelli, Francisco D. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA and IFIBA CONICET, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Centro Atomico Bariloche Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina)

2011-11-15T23:59:59.000Z

475

Demonstration Test of Iron Addition to a Flue Gas Desulfurization (FGD) Absorber to Enhance Mercury Removal  

Science Conference Proceedings (OSTI)

This report documents the findings from a full-scale demonstration test of the effects on trace elements of adding iron to a forced oxidation flue gas desulfurization (FGD) scrubber. Three specific effects were evaluated: lowering mercury emissions to the atmosphere; lowering the concentration of soluble or sub-micron-sized mercury particles in FGD purge water, which could improve removal of mercury in FGD purge water treatment; and lowering the concentration of selenate in FGD purge water, which could i...

2009-12-31T23:59:59.000Z

476

Optical and quantum efficiency analysis of (Ag,Cu)(In,Ga)Se2 absorber layers  

DOE Green Energy (OSTI)

(Ag,Cu)(In,Ga)Se2 thin films have been deposited by elemental co-evaporation over a wide range of compositions and their optical properties characterized by transmission and reflection measurements and by relative shift analysis of quantum efficiency device measurements. The optical bandgaps were determined by performing linear fits of (?h?)2 vs. h?, and the quantum efficiency bandgaps were determined by relative shift analysis of device curves with fixed Ga/(In+Ga) composition, but varying Ag/(Cu+Ag) composition. The determined experimental optical bandgap ranges of the Ga/(In+Ga) = 0.31, 0.52, and 0.82 groups, with Ag/(Cu+Ag) ranging from 0 to 1, were 1.19-1.45 eV, 1.32-1.56 eV, and 1.52-1.76 eV, respectively. The optical bowing parameter of the different Ga/(In+Ga) groups was also determined.

Boyle, Jonathan; Hanket, Gregory; Shafarman, William

2009-06-09T23:59:59.000Z

477

Routes for Rapid Synthesis of CuIn Ga Se Absorbers  

Science Conference Proceedings (OSTI)

... Power for Satellites Concentrator PV Space PV IR-Detector Flexible Substrate Mobile Power Classification of Solar Cells Page 5. Substrate ...

2012-10-04T23:59:59.000Z

478

WA_1994_021_ATLANTA_GAS_LIGHT_AND_ABSORBENT_RESEARCH_Waiver_...  

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

4021ATLANTAGASLIGHTANDABSORBENTRESEARCHWaiver.pdf WA1994021ATLANTAGASLIGHTANDABSORBENTRESEARCHWaiver.pdf WA1994021ATLANTAGASLIGHTANDABSORBENTRESEARCHWai...

479

Synthesis, characterization, and microwave-absorbing properties of polypyrrole/MnFe2O4 nanocomposite  

Science Conference Proceedings (OSTI)

Conductive polypyrrole (PPy)-manganese ferrite (MnFe2O4) nanocomposites with core-shell structure were synthesized by in situ polymerization in the presence of dodecyl benzene sulfonic acid (DBSA) as the surfactant and dopant and ...

Seyed Hossein Hosseini; Ahmad Asadnia

2012-01-01T23:59:59.000Z

480

An Optical Characterization Technique for Parabolic Trough Solar Collectors Using Images of the Absorber Reection.  

E-Print Network (OSTI)

?? As the concentrating solar power industry competes to develop a less-expensive parabolic trough collector, assurance is needed that new parabolic trough collectors maintain accurate… (more)

Owkes, Jeanmarie Kathleen

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "amine absorbent cxs" from the National Library of EnergyBeta (NLEBeta).
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481

Plutonium and americium separation using organophosphorus extractant absorbed onto ferromagnetic particles  

SciTech Connect

A process for the separation of radioactive constituents from radioactive wastes utilizing CMPO and TBP, in addition to magnetic separation, is described.

Nunez, L.; Vandegrift, G.F.

1994-05-01T23:59:59.000Z

482

Possible demonstration of ionization cooling using absorbers in a solenoidal field  

SciTech Connect

Ionization cooling may play an important role in reducing the phase space volume of muons for a future muon-muon collider. We describe a possible experiment to demonstrate transverse emittance cooling using a muon beam at the AGS at Brookhaven National Laboratory. The experiment uses device dimensions and parameters and beam conditions similar to what is expected in an actual muon-muon collider.

Fernow, R.C.; Gallardo, J.C.; Kirk, H.G. [and others

1995-12-01T23:59:59.000Z

483

NIST: Comparison of Co60 Absorbed Dose for High-Dose ...  

Science Conference Proceedings (OSTI)

... at the dose levels used in radiation processing were ... 1 to 2 parts in 10 2 . The dose-rate effect ... doses for the laboratories that used low-rate gamma ...

2013-03-13T23:59:59.000Z

484