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Note: This page contains sample records for the topic "brown powder obtained" 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
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1

Electrochemical study of Aluminum-Fly Ash composites obtained by powder metallurgy  

Science Conference Proceedings (OSTI)

In this paper, two different ASTM C 618 Class C fly ashes (FA) were used for the production of aluminum metal matrix composites (MMCs) using powder metallurgy (PM) technology. Calcareous FAs were sampled from the electrostatic precipitators of two different lignite-fired power stations: from Megalopolis, Southern Greece (MFA) and from Kardia, Northen Greece (KFA), under maximum electricity load. FAs were milled in order to reduce the mean particle diameter and Aluminum-FA composites containing 10% and 20% of FA were then prepared and compacted. The green products were sintered for 2 h at 600 Degree-Sign C. Sintered Al-FA MMCs showed increased hardness and wear resistance suggesting their possible use in industrial applications for example in covers, casings, brake rotors or engine blocks. As most possible industrial applications of MMCs not only require wear resistance, but also corrosion resistance in different mild aggressive medias, this paper aims to study the electrochemical behavior of FA MMCs in order to evaluate their corrosion resistance. The morphology and chemical composition of the phases in the Aluminum-FA composite samples were investigated using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDXS). Moreover, topographic and Volta potential maps were acquired by Scanning Kelvin Probe Force Microscopy (SKP-FM). Volta potential maps provide information about the electrochemical behavior of the different phases in absence of electrolyte. The electrochemical behavior was investigated by Open Circuit Potential measurements and potentiodynamic polarization, while the corrosion mechanisms were studied by SEM observations after different times of immersion in a mild corrosive medium. In all cases it could be stated that the addition of the FA particles into the Al matrix might cause an increase of the hardness and mechanical properties of the pure aluminum but deteriorates the corrosion resistance. The degradation phenomena occurring on the FA containing samples might be related to the following mechanisms: 1) Partial detachment or dissolution of the FA soluble phases, in particular based on Si, Fe and Ca; 2) dissolution of the Al matrix surrounding the FA particles due to crevice corrosion; 3) Al localized dissolution due to galvanic coupling between the Fe-rich intermetallics and the matrix. - Highlights: Black-Right-Pointing-Pointer Aluminum metal matrix composites containing two types of fly ashes have been characterized. Black-Right-Pointing-Pointer The microstructure and the electrochemical behavior have been studied using different techniques. Black-Right-Pointing-Pointer The addition of FA deteriorates the corrosion resistance of the aluminum. Black-Right-Pointing-Pointer Degradation mechanisms: galvanic coupling, crevice corrosion, detachment of FA particles.

Marin, E. [Department of Chemistry, Physics and Environment, University of Udine, Via Cotonificio 108, 33100, Udine (Italy); Lekka, M., E-mail: maria.lekka@uniud.it [Department of Chemistry, Physics and Environment, University of Udine, Via Cotonificio 108, 33100, Udine (Italy); Andreatta, F.; Fedrizzi, L. [Department of Chemistry, Physics and Environment, University of Udine, Via Cotonificio 108, 33100, Udine (Italy); Itskos, G. [School of Chemical Engineering, National Technical University of Athens, Iroon Polytechneiou 9, Zografou 15780, Athens (Greece); Centre for Research and Technology Hellas/Institute for Solid Fuels Technology and Applications, Mesogeion Avenue 357-359, Halandri 15231, Athens (Greece); Moutsatsou, A. [School of Chemical Engineering, National Technical University of Athens, Iroon Polytechneiou 9, Zografou 15780, Athens (Greece); Koukouzas, N. [Centre for Research and Technology Hellas/Institute for Solid Fuels Technology and Applications, Mesogeion Avenue 357-359, Halandri 15231, Athens (Greece); Kouloumbi, N. [School of Chemical Engineering, National Technical University of Athens, Iroon Polytechneiou 9, Zografou 15780, Athens (Greece)

2012-07-15T23:59:59.000Z

2

Nancy Brown  

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

Brown, Nancy J., Lucas A. J. Bastien, and Phillip N. Price. "Transport Properties for Combustion Modeling." Progress in Energy and Combustion Science 37 (2011): 565-582. 2010...

3

NREL: Energy Analysis - Austin Brown  

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

Austin Brown Photo of Austin Brown Austin Brown is a member of the Washington D.C. Office in the Strategic Energy Analysis Center. Senior Analyst (Strategic Planning) On staff...

4

Ceramic oxide powders and the formation thereof  

DOE Patents (OSTI)

Ceramic oxide powders and a method for their preparation. Ceramic oxide powders are obtained using a flame process whereby two or more precursors of ceramic oxides are introduced into a counterflow diffusion flame burner wherein said precursors are converted into ceramic oxide powders. The morphology, particle size, and crystalline form of the ceramic oxide powders are determined by process conditions. 14 figures.

Katz, J.L.; Chenghung Hung.

1993-12-07T23:59:59.000Z

5

Ceramic oxide powders and the formation thereof  

DOE Patents (OSTI)

Ceramic oxide powders and a method for their preparation. Ceramic oxide powders are obtained using a flame process whereby two or more precursors of ceramic oxides are introduced into a counterflow diffusion flame burner wherein said precursors are converted into ceramic oxide powders. The morphology, particle size, and crystalline form of the ceramic oxide powders are determined by process conditions.

Katz, Joseph L. (Baltimore, MD); Hung, Cheng-Hung (Baltimore, MD)

1993-01-01T23:59:59.000Z

6

Mathematical modelling of brown seaweed drying curves  

Science Conference Proceedings (OSTI)

Simple solution on one-term exponential models is used in the analysis of raw data obtained from the drying experiment. The values of the parameters a, n and the constant k for the models are determined using a plot of curve drying models. Three different ... Keywords: brown seaweed, drying curves, mathematical models

Ahmad Fudholi; Mohd Hafidz Ruslan; Lim Chin Haw; Sohif Mat; Mohd Yusof Othman; Azami Zaharim; Kamaruzzaman Sopian

2012-01-01T23:59:59.000Z

7

brown-98.pdf  

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

High Resolution Validation in the Shortwave: High Resolution Validation in the Shortwave: ASTI/LBLRTM QME P. D. Brown, S. A. Clough, and E. J. Mlawer Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts T. R. Shippert Pacific Northwest National Laboratory Richland, Washington F. J. Murcray Denver University Denver, Colorado Introduction To assess our modeling capability in the shortwave and to resolve issues including those described by Cess et al. (1995) and others (Li and Moreau 1996; Arking 1996), a Quality Measurement Experiment (QME) has been initiated that extends the approach of the longwave AERI/LBLRTM (atmospheric emitted radiance interferometer/line by line radiative transfer model) QME (Brown et al. 1998) to shorter wavelengths. This shortwave QME for the clear sky focuses upon three components: 1) the ability to accurately

8

Powder Diffraction  

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

Powder Diffraction Powder Diffraction Ashfia Huq Spallation Neutron Source Oak Ridge National Laboratory 2 Managed by UT-Battelle for the U.S. Department of Energy Bragg's law W.H. Bragg (1862-1942) W.L. Bragg (1890-1971) *Zinc Blend (fcc not sc) *NaCl (not molecular) *Diamond (two overlapping fcc lattice) Shared 1915 Nobel Prize 3 Managed by UT-Battelle for the U.S. Department of Energy Where are the atoms? X-ray: (l : 10 -9 m - 10 -11 m) l[Å] = 12.398/E ph [keV] Source: * Lab diffractometers * Synchrotron Sources Neutron: (thermal l : 1-4Å) E n [meV] =81.89/ l 2 [Å] Source: * Reactors (fission) * Spallation Source We need wavelength (l) ~ Object size (for condensed matter that is Å) 4 Managed by UT-Battelle for the U.S. Department of Energy

9

Energetic powder  

DOE Patents (OSTI)

Fluoroalkylsilane-coated metal particles. The particles have a central metal core, a buffer layer surrounding the core, and a fluoroalkylsilane layer attached to the buffer layer. The particles may be prepared by combining a chemically reactive fluoroalkylsilane compound with an oxide coated metal particle having a hydroxylated surface. The resulting fluoroalkylsilane layer that coats the particles provides them with excellent resistance to aging. The particles can be blended with oxidant particles to form energetic powder that releases chemical energy when the buffer layer is physically disrupted so that the reductant metal core can react with the oxidant.

Jorgensen, Betty S. (Jemez Springs, NM); Danen, Wayne C. (Los Alamos, NM)

2003-12-23T23:59:59.000Z

10

PDF PRIMER: Powder Metallurgy and Superalloys - TMS  

Science Conference Proceedings (OSTI)

Feb 15, 2007 ... The very highly alloyed superalloys cannot be produced by conventional means. Powder metallurgy methods are needed to obtain...

11

Alabama Nuclear Profile - Browns Ferry  

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

Browns Ferry" "Unit","Summer capacity (mw)","Net generation (thousand mwh)","Summer capacity factor (percent)","Type","Commercial operation date","License expiration date"...

12

Fermilab Today | Brown University Profile  

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

Cho and Gena Kukartsev. Front row from left: David Khatidze, Selda Esen Koylu, Duong Nguyen, Shabnam Jabeen, Saptaparna Bhattacharya and John Paul Chou. Brown group at CERN from...

13

brown-99.PDF  

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

NCAR/ARM Multiple Antenna Profiler NCAR/ARM Multiple Antenna Profiler W.O.J. Brown, S. A. Cohn, M. E. Susedik, C. L. Martin, G. Maclean, and D. B. Parsons National Center for Atmospheric Research Atmospheric Technology Division Boulder, Colorado Introduction National Center for Atmospheric Research/Atmospheric Technology Division (NCAR/ATD), with the support of the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Program, is developing an advanced wind profiler radar known as Multiple Antenna Profiler Radar (MAPR) (Cohn et al. 1997, 1998). The radar is a highly modified 915-MHz profiler (Radian LAP-3000) and is designed to measure wind and turbulence at a rate considerably faster than traditional wind profilers. The radar has four vertically pointing closely spaced receiving antenna and uses spaced

14

Powder treatment process  

SciTech Connect

(1) A process comprising spray drying a powder-containing slurry, the slurry containing a powder constituent susceptible of oxidizing under the temperature conditions of the spray drying, while reducing the tendency for oxidation of the constituent by including as a liquid constituent of the slurry an organic liquid; (2) a process comprising spray drying a powder-containing slurry, the powder having been pretreated to reduce content of a powder constituent susceptible of oxidizing under the temperature conditions of the spray drying, the pretreating comprising heating the powder to react the constituent; and (3) a process comprising reacting ceramic powder, grinding the reacted powder, slurrying the ground powder, spray drying the slurried powder, and blending the dried powder with metal powder.

Weyand, John D. (Greensburg, PA)

1988-01-01T23:59:59.000Z

15

Powder treatment process  

DOE Patents (OSTI)

Disclosed are: (1) a process comprising spray drying a powder-containing slurry, the slurry containing a powder constituent susceptible of oxidizing under the temperature conditions of the spray drying, while reducing the tendency for oxidation of the constituent by including as a liquid constituent of the slurry an organic liquid; (2) a process comprising spray drying a powder-containing slurry, the powder having been pretreated to reduce content of a powder constituent susceptible of oxidizing under the temperature conditions of the spray drying, the pretreating comprising heating the powder to react the constituent; and (3) a process comprising reacting ceramic powder, grinding the reacted powder, slurrying the ground powder, spray drying the slurried powder, and blending the dried powder with metal powder. 2 figs.

Weyand, J.D.

1988-02-09T23:59:59.000Z

16

Powder dispersion system  

SciTech Connect

A powder dispersion method and apparatus comprising an air eductor and a powder dispensing syringe inserted into a suction connection of the air eductor.

Gorenz, Heather M. (Albuquerque, NM); Brockmann, John E. (Albuquerque, NM); Lucero, Daniel A. (Albuquerque, NM)

2011-09-20T23:59:59.000Z

17

PLUTONIUM-HYDROGEN REACTION PRODUCT, METHOD OF PREPARING SAME AND PLUTONIUM POWDER THEREFROM  

DOE Patents (OSTI)

A process is described for forming plutonlum hydride powder by reacting hydrogen with massive plutonium metal at room temperature and the product obtained. The plutonium hydride powder can be converted to plutonium powder by heating to above 200 deg C.

Fried, S.; Baumbach, H.L.

1959-12-01T23:59:59.000Z

18

Precision powder feeder  

DOE Patents (OSTI)

A new class of precision powder feeders is disclosed. These feeders provide a precision flow of a wide range of powdered materials, while remaining robust against jamming or damage. These feeders can be precisely controlled by feedback mechanisms.

Schlienger, M. Eric (Albuquerque, NM); Schmale, David T. (Albuquerque, NM); Oliver, Michael S. (Sandia Park, NM)

2001-07-10T23:59:59.000Z

19

Powder Materials Committee  

Science Conference Proceedings (OSTI)

Powder Materials for Energy Efficiency in Transportation; January 2011: Organized By: Fernand Marquis Nanomaterials for Renewable Energy...

20

17 Years of Lithium Brown Dwarfs 10/21/12Ringberg Brown Dwarfs 1  

E-Print Network (OSTI)

17 Years of Lithium Brown Dwarfs 10/21/12Ringberg Brown Dwarfs 1 #12;The Keck Search for Lithium 10/21/12Ringberg Brown Dwarfs 2 Lithium was not seen in objects which should have been comfortably into the brown "lithium dating". This adjustment in age meant that the inferred mass of PPl 15 rose to near the substellar

Joergens, Viki

Note: This page contains sample records for the topic "brown powder obtained" 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

Development and Characterization of Milled Silver Powder Addition ...  

Science Conference Proceedings (OSTI)

In order to add the milled Ag powders to granular PP feedstock two different .... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

22

Multiple feed powder splitter  

DOE Patents (OSTI)

A device for providing uniform powder flow to the nozzles when creating solid structures using a solid fabrication system such as the directed light fabrication (DLF) process. In the DLF process, gas entrained powders are passed through the focal point of a moving high-power laser light which fuses the particles in the powder to a surface being built up in layers. The invention is a device providing uniform flow of gas entrained powders to the nozzles of the DLF system. The device comprises a series of modular splitters which are slidably interconnected and contain an integral flow control mechanism. The device can take the gas entrained powder from between one to four hoppers and split the flow into eight tubular lines which feed the powder delivery nozzles of the DLF system.

Lewis, Gary K. (Los Alamos, NM); Less, Richard M. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

23

Multiple feed powder splitter  

DOE Patents (OSTI)

A device for providing uniform powder flow to the nozzles when creating solid structures using a solid fabrication system such as the directed light fabrication (DLF) process. In the DLF process, gas entrained powders are passed through the focal point of a moving high-power laser light which fuses the particles in the powder to a surface being built up in layers. The invention is a device providing uniform flow of gas entrained powders to the nozzles of the DLF system. The device comprises a series of modular splitters which are slidably interconnected and contain an integral flow control mechanism. The device can take the gas entrained powder from between one to four hoppers and split the flow into eight tubular lines which feed the powder delivery nozzles of the DLF system.

Lewis, Gary K. (Los Alamos, NM); Less, Richard M. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

24

Powder Metallurgy Bearing Failure  

Science Conference Proceedings (OSTI)

The bearings were oil impregnated, porous, powder metallurgy bushings. Even after the fire, lubricant ... Failure Analysis of Four Graphite Pump Seal Faces.

25

Fred L. Brown | Department of Energy  

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

Fred L. Brown Fred L. Brown About Us Fred L. Brown - Deputy Director of Office of Hearings & Appeals Fred L. Brown Fred Brown is the Deputy Director of the Office of Hearings and Appeals (OHA) of the U.S. Department of Energy (DOE). OHA is the quasi-judicial arm of DOE that conducts hearings and issues initial Departmental decisions with respect to any adjudicative proceedings which the Secretary may delegate. OHA's jurisdiction includes: deciding Freedom of Information and Privacy Act appeals; conducting administrative hearings and issuing Departmental decisions regarding personnel security clearance eligibility; conducting contractor employee "whistleblower" hearings and investigations; deciding applications for exception from DOE rules and regulations; and performing mediation services for the agency. Mr. Brown

26

Women @ Energy: Nancy Brown | Department of Energy  

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

Women @ Energy: Nancy Brown Women @ Energy: Nancy Brown Women @ Energy: Nancy Brown March 15, 2013 - 11:00am Addthis Dr. Nancy Jeanne Brown is a Senior Scientist at the Lawrence Berkeley National Laboratory. Dr. Nancy Jeanne Brown is a Senior Scientist at the Lawrence Berkeley National Laboratory. Check out other profiles in the Women @ Energy series and share your favorites on Pinterest. Dr. Nancy Jeanne Brown is a Senior Scientist at the Lawrence Berkeley National Laboratory. Her research interests are atmospheric science, chemical kinetics, air quality and climate modeling, high performance computing, and combustion modeling. She received a B.S. in Chemistry at Virginia Polytechnic Institute, an M.S. in Molecular Physics and Ph.D. in Chemical Physics/Physical chemistry at the University of Maryland. Dr.

27

Counterflow diffusion flame synthesis of ceramic oxide powders  

DOE Patents (OSTI)

Ceramic oxide powders and methods for their preparation are revealed. Ceramic oxide powders are obtained using a flame process whereby one or more precursors of ceramic oxides are introduced into a counterflow diffusion flame burner wherein the precursors are converted into ceramic oxide powders. The nature of the ceramic oxide powder produced is determined by process conditions. The morphology, particle size, and crystalline form of the ceramic oxide powders may be varied by the temperature of the flame, the precursor concentration ratio, the gas stream and the gas velocity.

Katz, Joseph L. (Baltimore, MD); Miquel, Philippe F. (Towson, MD)

1997-01-01T23:59:59.000Z

28

Counterflow diffusion flame synthesis of ceramic oxide powders  

DOE Patents (OSTI)

Ceramic oxide powders and methods for their preparation are revealed. Ceramic oxide powders are obtained using a flame process whereby one or more precursors of ceramic oxides are introduced into a counterflow diffusion flame burner wherein the precursors are converted into ceramic oxide powders. The nature of the ceramic oxide powder produced is determined by process conditions. The morphology, particle size, and crystalline form of the ceramic oxide powders may be varied by the temperature of the flame, the precursor concentration ratio, the gas stream and the gas velocity. 24 figs.

Katz, J.L.; Miquel, P.F.

1997-07-22T23:59:59.000Z

29

PNNL Nanoscale Research Safety Program Brown Bag  

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

PNNL's Nanoscale Research Safety Program Brown Bag Carbon nanotube research is a critical research capability at Pacifi c North- west National Laboratory (Digisource) Do you work...

30

Coating Surfaces with Superhydrophobic Powder  

powder spraying process, dry resin powder is sprayed on to a given substrate. The ... Other fluid dynamic and heat transfer applications Patent

31

Study on Drying Characteristics of Australian Brown Coal Using ...  

Science Conference Proceedings (OSTI)

Victorian brown coal in Australia has over 60wt% moisture content and, when dried, it becomes highly reactive. Due to the difficulty in transporting it, brown coal

32

brown-pd99.PDF  

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

High-Resolution Model/Measurement Validations High-Resolution Model/Measurement Validations of Solar Direct-Beam Flux P. D. Brown, E. J. Mlawer, and S. A. Clough Atmospheric and Environmental Research, Inc. Cambridge, Massachusetts T. R. Shippert Pacific Northwest National Laboratory Richland, Washington F. J. Murcray and A. W. Dybdahl University of Denver Denver, Colorado L. C. Harrison, P. W. Kiedron, and J. J. Michalsky State University of New York at Albany Albany, New York Introduction A balance between thermal and solar radiation at the top of the atmosphere is necessary for the stability of the earth's climate. To evaluate the behavior of the climate system resulting from a radiative perturbation of this balance, as in a "global warming" scenario, accurate knowledge is needed of the radiative properties of the atmosphere both in the thermal- and solar-dominated spectral regions. A

33

Electron Beam Powder Bed Processes  

Science Conference Proceedings (OSTI)

Advanced Materials, Processes and Applications for Additive Manufacturing : Electron Beam Powder Bed Processes Program Organizers: Andrzej...

34

PREPARATION OF METAL POWDER COMPACTS PRIOR TO PRESSING  

DOE Patents (OSTI)

A method of fabricating uranium by a powder metallurgical technique is described. It consists in introducing powdered uranium hydride into a receptacle shaped to coincide with the coatour of the die cavity and heating the hydride so that it decomposes to uranium metal. The metal particles cohere in the shapw of the receptacle and thereafter the prefurmed metal powder is pressed and sintered to obtain a dense compact.

Mansfield, H.

1958-08-26T23:59:59.000Z

35

The Structure of Brown Dwarf Circumstellar Disks  

E-Print Network (OSTI)

We present synthetic spectra for circumstellar disks that are heated by radiation from a central brown dwarf. Under the assumption of vertical hydrostatic equilibrium, our models yield scaleheights for brown dwarf disks in excess of three times those derived for classical T Tauri (CTTS) disks. If the near-IR excess emission observed from brown dwarfs is indeed due to circumstellar disks, then the large scaleheights we find could have a significant impact on the optical and near-IR detectability of such systems. Our radiation transfer calculations show that such highly flared disks around brown dwarfs will result in a large fraction of obscured sources due to extinction of direct starlight by the disk over a wide range of sightlines. The obscured fraction for a 'typical' CTTS is less than 20%. We show that the obscured fraction for brown dwarfs may be double that for CTTS, but this depends on stellar and disk mass. We also comment on possible confusion in identifying brown dwarfs via color-magnitude diagrams: edge-on CTTS display similar colors and magnitudes as a face-on brown dwarf plus disk systems.

Christina Walker; Kenneth Wood; C. J. Lada; Thomas Robitaille; J. E. Bjorkman; Barbara Whitney

2004-03-11T23:59:59.000Z

36

Ultrafine hydrogen storage powders  

DOE Patents (OSTI)

A method of making hydrogen storage powder resistant to fracture in service involves forming a melt having the appropriate composition for the hydrogen storage material, such, for example, LaNi.sub.5 and other AB.sub.5 type materials and AB.sub.5+x materials, where x is from about -2.5 to about +2.5, including x=0, and the melt is gas atomized under conditions of melt temperature and atomizing gas pressure to form generally spherical powder particles. The hydrogen storage powder exhibits improved chemcial homogeneity as a result of rapid solidfication from the melt and small particle size that is more resistant to microcracking during hydrogen absorption/desorption cycling. A hydrogen storage component, such as an electrode for a battery or electrochemical fuel cell, made from the gas atomized hydrogen storage material is resistant to hydrogen degradation upon hydrogen absorption/desorption that occurs for example, during charging/discharging of a battery. Such hydrogen storage components can be made by consolidating and optionally sintering the gas atomized hydrogen storage powder or alternately by shaping the gas atomized powder and a suitable binder to a desired configuration in a mold or die.

Anderson, Iver E. (Ames, IA); Ellis, Timothy W. (Doylestown, PA); Pecharsky, Vitalij K. (Ames, IA); Ting, Jason (Ames, IA); Terpstra, Robert (Ames, IA); Bowman, Robert C. (La Mesa, CA); Witham, Charles K. (Pasadena, CA); Fultz, Brent T. (Pasadena, CA); Bugga, Ratnakumar V. (Arcadia, CA)

2000-06-13T23:59:59.000Z

37

Study on the Microstructure Evolution of Fe-6.5wt.%Si Powders ...  

Science Conference Proceedings (OSTI)

Si Powders Fabricated by High Pressure Gas Atomization ... Characterization of Milled Silver Powder Addition to Polypropylene Feedstock for Injection Molding ... Membranes Obtained from PA6/HDPE Blends Via Precipitation by Immersion.

38

FIA-12-0044 - In the Matter of Cynthia Brown  

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

Cynthia Brown filed an Appeal regarding a request filed under the Freedom of Information Act. In March 2012, Ms. Brown filed a request for records regarding her late mother. In a July 2012 determination, the DOEs Office of Health, Safety and Security (HSS) issued a determination in response to Ms. Browns request.

39

Powder Metallurgy and Additive Manufacturing of Titanium Powders  

Science Conference Proceedings (OSTI)

Composition Design of Multi-Component ?-Ti Alloys Based on a Cluster Model Consolidation of Blended Titanium/Magnesium Powders by Microwave Processing ... Rheological Properties of Feedstock Composed of Titanium Alloy Powder...

40

POWDER: The Neutron Powder Diffractometer at HFIR | ORNL Neutron...  

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

powder diffraction include (but are not limited to) catalysts, ionic conductors, superconductors, alloys, intermetallic compounds, ceramics, cements, colossal magnetoresistance...

Note: This page contains sample records for the topic "brown powder obtained" 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

ATOMIZATION METHOD OF MAKING URANIUM POWDER  

SciTech Connect

Atomized U powder was produced by forming an electric arc between two U electrodes in an inert atmosphere and sending a high velocity stream of inert gas through the arc. Uranium particles obtained by this method were of spherical shape; smaller particles contained mostly small grains, and larger particles wore characterizcd by larger grains. The particles were ductile and could be hotpressed to a compact of high density. The temporary equipment used for those preliminary tests on atomization was not adequate to control particle size. Suggestions for the production of atomized U powder of controllable quality are included. (arth)

Hausner, H.H.; Mansfield, H.

1950-08-01T23:59:59.000Z

42

Method to blend separator powders  

DOE Patents (OSTI)

A method for making a blended powder mixture, whereby two or more powders are mixed in a container with a liquid selected from nitrogen or short-chain alcohols, where at least one of the powders has an angle of repose greater than approximately 50 degrees. The method is useful in preparing blended powders of Li halides and MgO for use in the preparation of thermal battery separators.

Guidotti, Ronald A. (Albuquerque, NM); Andazola, Arthur H. (Albuquerque, NM); Reinhardt, Frederick W. (Albuquerque, NM)

2007-12-04T23:59:59.000Z

43

Powder Metallurgy Processing and Products  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, Materials Science & Technology 2012. Symposium, Powder Metallurgy Processing and Products. Sponsorship. Organizer(s)...

44

POWDER: The Neutron Powder Diffractometer at HFIR | ORNL Neutron Sciences  

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

Neutron Powder Diffractometer Neutron Powder Diffractometer Neutron Powder Diffractometer. Neutron Powder Diffractometer. The HB-2A diffractometer is a workhorse instrument used to conduct crystal structural and magnetic structural studies of powdered and ceramic samples, particularly as a function of intensive conditions (T, P, H, etc.). Powder diffraction data collected on this instrument are ideally suited for the Rietveld method. A full range of ancillary sample environments can be used, including cryofurnaces (4-800 K), furnaces (to 1800 K), cryostats (to 0.3 K), and cryomagnets (to 7 T). The Powder Diffractometer has a Debye-Scherrer geometry. The detector bank has 44 3He tubes, each with 6' Soller collimators. A germanium wafer-stack monochromator is vertically focusing and provides one of three principal

45

Preparation of superconductor precursor powders  

DOE Patents (OSTI)

A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic and/or reduced particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of all metals in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity. Superconductors which can be formed from the precursor powder include pellet and powder-in-tube products.

Bhattacharya, Raghunath (Littleton, CO)

1998-01-01T23:59:59.000Z

46

Brown County Wind | Open Energy Information  

Open Energy Info (EERE)

Brown County Wind Brown County Wind Facility Brown County Wind Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Adams Electric Cooperative Developer Adams Electric Cooperative Energy Purchaser Adams Electric Cooperative Location Mt. Sterling IL Coordinates 39.97340387°, -90.69939137° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.97340387,"lon":-90.69939137,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

47

Browns Ferry Corrosion Failure Data Assessment  

Science Conference Proceedings (OSTI)

This report provides a summary of the poolside inspection results from an inspection performed in 2011 of GE6 8x8 fuel that operated in Browns Ferry-3 and failed as a result of a corrosion-related mechanism in cycle 8 in 1998. It also provides an assessment of these results relative to prior crud-induced localized corrosion (CILC-) type failures in the early 1980s and subsequent corrosion-related failures from 2002 to 2004 in the same unit and its sister unit Browns Ferry-2. In particular, ...

2012-09-27T23:59:59.000Z

48

FIA-12-0044 - In the Matter of Cynthia Brown  

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

Cynthia Brown filed an Appeal regarding a request filed under the Freedom of Information Act. In March 2012, Ms. Brown filed a request for records regarding her late mother.

49

David Brown Ethnicized Violence in Indonesia  

E-Print Network (OSTI)

David Brown and Ian Wilson Ethnicized Violence in Indonesia: The Betawi Brotherhood Forum which operates in Jakarta, Indonesia, indicates how both dimensions of violence coexist and interweave fighting which has intensified in Indonesia since the fall of Suharto in 1998. Such violence has become

50

Edmund G. Brown Jr. LIGHTING CALIFORNIA'S FUTURE  

E-Print Network (OSTI)

Edmund G. Brown Jr. Governor LIGHTING CALIFORNIA'S FUTURE: SMART LIGHT-EMITTING DIODE LIGHTING's Future: Smart LightEmitting Diode Lighting in Residential Fans. California Energy Commission, PIER. For the Smart Light emitting Diode Lighting in Residential Fans Project, the California Lighting Technology

51

Recent Developments in Powder Metallurgy  

SciTech Connect

Brief notes from a meeting between NAA and S. B. Roboff, Sylvania Electric Products, regarding the important developments in powder metallurgy fuels and reactor materials.

Hayward, B.R.

1953-06-30T23:59:59.000Z

52

Powder Consolidation and Properties II  

Science Conference Proceedings (OSTI)

Feb 16, 2010... energy efficient due to the possibility of direct microwave heating of the titanium powder augmented by hybrid heating in a ceramic casket.

53

Powder Consolidation and Properties I  

Science Conference Proceedings (OSTI)

Feb 16, 2010 ... Making Titanium Powder Metallurgy a Viable Alternative to Wrought for Manufacturing: James Sears1; 1South Dakota School of Mines &...

54

Yang Keller and Brown MM 2012.pdf  

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

Genomics Genomics on Pretreatment Inhibitor Tolerance of Zymomonas mobilis Shihui Yang, Martin Keller, and Steven D. Brown Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 2 Genome Annotation of ZM4 Using Systems Biology Studies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 3 Identification of Genes Tolerant to Acetate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 3.1 nhaA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 3.2 hfq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169 3.3 nhaA and hfq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 3.4 himA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 4 Heterologous

55

The Grizzly and the Big Brown Bears  

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

Grizzly and the Big Brown Bears Grizzly and the Big Brown Bears Nature Bulletin No. 655-A November 12, 1977 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation THE GRIZZLY AND THE BIG BROWN BEARS In the early days, more tall tales were told about "Old Ephraim, " the grizzly bear, than any other animal. It had the reputation of being a bloodthirsty enemy of man and was given the scientific name Ursus horribilis by a taxonomist who had never seen a live one but had heard and read some of those yarns about its terrible ferocity and prodigious strength. The Grizzly is very intelligent and shrewd but, actually, has a rather phlegmatic disposition. It avoids people and will not attack unless provoked. Then, a female with cubs is unpredictable, and big game hunters say that a wounded grizzly is the most dangerous animal on earth. But ordinarily, as Earnest Thompson Seton observed, Ephraim is a peaceful giant who is perfectly satisfied to let you alone if you leave him alone.

56

Preparation of superconductor precursor powders  

DOE Patents (OSTI)

A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals, such as nitrate salts of thallium, barium, calcium, and copper, which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of thallium in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity. Superconductors which can be formed from the precursor powder include pellet and powder-in-tube products.

Bhattacharya, Raghunath (Littleton, CO); Blaugher, Richard D. (Evergreen, CO)

1995-01-01T23:59:59.000Z

57

Preparation of superconductor precursor powders  

DOE Patents (OSTI)

A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic and/or reduced particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of all metals in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity. Superconductors which can be formed from the precursor powder include pellet and powder-in-tube products. 7 figs.

Bhattacharya, R.

1998-08-04T23:59:59.000Z

58

Effect of Powder Cleanliness on the Fatigue Behavior of Powder ...  

Science Conference Proceedings (OSTI)

quantitative fractography, and heavy liquid separation, were evaluated and .... The size distribution of natural inclusions recovered from the same unseeded powder ..... the United Engineering Foundation Conference on Gas Turbine. Engines...

59

Ultrafine Hydrogen Storage Powders - Energy Innovation Portal  

Patent 6,074,453: Ultrafine hydrogen storage powders A method of making hydrogen storage powder resistant to fracture in service involves forming a melt having the ...

60

Particle and feeding characteristics of biomass powders.  

E-Print Network (OSTI)

?? Milling of biomass is a necessary key step in suspension gasification or powder combustion. Milled biomass powders are often cohesive, have low bulk density (more)

Falk, Joel

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Rotary powder feed through apparatus  

DOE Patents (OSTI)

A device for increasing the uniformity of solids within a solids fabrication system, such as a direct light fabrication (DLF) system in which gas entrained powders are passed through the focal point of a moving high-power light which fuses the particles in the powder to a surface being built up in layers. The invention provides a feed through interface wherein gas entrained powders input from stationary input lines are coupled to a rotating head of the fabrication system. The invention eliminates the need to provide additional slack in the feed lines to accommodate head rotation, and therefore reduces feed line bending movements which induce non-uniform feeding of gas entrained powder to a rotating head.

Lewis, Gary K. (Los Alamos, NM); Less, Richard M. (Los Alamos, NM)

2001-01-01T23:59:59.000Z

62

Comparison of Powder Processing Methods  

Science Conference Proceedings (OSTI)

Table 5   Application of powder processing methods...wrought Greater than wrought Equal to wrought Price per pound $0.50??5.00 $1??10 >$100 $1??5...

63

Neutron detectors comprising boron powder  

DOE Patents (OSTI)

High-efficiency neutron detector substrate assemblies comprising a first conductive substrate, wherein a first side of the substrate is in direct contact with a first layer of a powder material comprising .sup.10boron, .sup.10boron carbide or combinations thereof, and wherein a conductive material is in proximity to the first layer of powder material; and processes of making said neutron detector substrate assemblies.

Wang, Zhehui; Morris, Christopher; Bacon, Jeffrey Darnell; Makela, Mark F; Spaulding, Randy Jay

2013-05-21T23:59:59.000Z

64

Browning: Email in Response to Smart Grid Request for Information  

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

Email from Stephen Browning explaing the two attachments submitted in response to the Smart Grid Request for Information on Addressing Policy and Logistical Challenges.

65

A Brown Bag Lunch with EETD Communications Support Resource:...  

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

technical writing and editing, and support for large projects such as guidebooks, manuals, and multi-party proposal development. At this informal brown bag lunch,...

66

Impact dynamics of porous powder. Final report  

SciTech Connect

The shock adiabats have been built experimentally in the range of moderate pressures for three porous materials: Al{sub 2}O{sub 3} wheat flour, and their mixture. The model, which describes the behavior of porous powder materials under large-amplitude dynamic loading, has been constructed. The model applicability to describing the shock wave processes is confirmed by good agreement of the calculated shock adiabats and the data obtained in the experiments. The compressive strength of compacted samples has been determined. The possible trend of further researches is presented in conclusion. 15 refs., 19 figs., 6 tabs.

Titov, V.M.

1995-12-31T23:59:59.000Z

67

Light brown apple moths arrival in California worries commodity groups  

E-Print Network (OSTI)

DG. 1991. Integrated control of light brown apple moth, Epi-and Ag- riculture. 2007a. Light brown apple moth host list.6 p. CDFA. 2007b. Light brown apple moth project:

Varela, Lucia G.; Johnson, Marshall W; Strand, Larry; Wilen, Cheryl A; Pickel, Carolyn

2008-01-01T23:59:59.000Z

68

Boiler Gold Rush Prof. Johnny Brown (MATH 700)  

E-Print Network (OSTI)

Boiler Gold Rush Prof. Johnny Brown (MATH 700) jeb@math.purdue.edu #12;#12;#12;David McCullough, Jr help Always be prepared #12;Boiler Gold Rush Prof. Johnny Brown (MATH 700) jeb@math.purdue.edu #12;

Brown, Johnny E.

69

PROCESS OF FORMING POWDERED MATERIAL  

DOE Patents (OSTI)

A process of forming high-density compacts of a powdered ceramic material is described by agglomerating the powdered ceramic material with a heat- decompossble binder, adding a heat-decompossble lubricant to the agglomerated material, placing a quantity of the material into a die cavity, pressing the material to form a compact, pretreating the compacts in a nonoxidizing atmosphere to remove the binder and lubricant, and sintering the compacts. When this process is used for making nuclear reactor fuel elements, the ceramic material is an oxide powder of a fissionsble material and after forming, the compacts are placed in a cladding tube which is closed at its ends by vapor tight end caps, so that the sintered compacts are held in close contact with each other and with the interior wall of the cladding tube.

Glatter, J.; Schaner, B.E.

1961-07-14T23:59:59.000Z

70

Preparing PLA Powders for Powder-Based Processing Using a ...  

Science Conference Proceedings (OSTI)

Of late, an important fabrication technique for producing complex shapes has emerged: ... The mechanism of powder formation can be explained by the relative solubility of ... Application of Polymer-Based Microfluidic Devices for the Selection and ... Biologically Inspired Origami (BIO) Paper for Tissue Engineering Scaffolds.

71

Brown-J Bacteriol -12.pdf  

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

12):3290. DOI: 10.1128/JB.00473-12. 12):3290. DOI: 10.1128/JB.00473-12. J. Bacteriol. Keller and Edward A. Bayer Zamin Yang, Miriam L. Land, Sagar M. Utturkar, Martin Yuval Shoham, Dawn M. Klingeman, Courtney M. Johnson, Steven D. Brown, Raphael Lamed, Ely Morag, Ilya Borovok, Mutant Strain AD2 Derived Cellulose Adhesion-Defective thermocellum Wild-Type Strain YS and Draft Genome Sequences for Clostridium http://jb.asm.org/content/194/12/3290 Updated information and services can be found at: These include: REFERENCES http://jb.asm.org/content/194/12/3290#ref-list-1 at: This article cites 39 articles, 21 of which can be accessed free CONTENT ALERTS more» articles cite this article), Receive: RSS Feeds, eTOCs, free email alerts (when new http://journals.asm.org/site/misc/reprints.xhtml Information about commercial reprint orders:

72

L. A. Brown, M. C. Higuera  

Office of Scientific and Technical Information (OSTI)

L. L. A. Brown, M. C. Higuera Prepared by Sandia National Laboratories Albuquerque, New Mexico 87185 and L b SANDlA REPORT SAND974017 0 UC-700 Unlimited Release Printed February i 998 Weapon Container Catalog Volumes 1 & 2 -_ Issued by Sandia National Laboratories, operated for the United States Department of Energy by Sandia Corporation. NOTICE: This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Govern- ment nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, prod-

73

IEEE NANOSCIENCE and TECHNOLOGY BROWN BAG  

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

PLEASE PLEASE JOIN US! NANOSCIENCE and TECHNOLOGY BROWN BAG Friday, 7 November 2008 Noon - 1 pm Columbia River Room (public access available) PNNL, ETB Building (Q Avenue, Richland, WA) speaker Dr. Meyya Meyyappan Chief Scientist for Exploration Technology, NASA Ames Research Center & IEEE Electron Devices Society Distinguished Lecturer presenting Nanotechnology in Chemical and Bio Sensor Systems Abstract: There are strong research programs in nanotechnology related to chemical sensors, electromechanical devices, actuators, biosensors, and other nanodevices in leading laboratories across the world which use nanomaterials and other molecularly-engineered approaches. In many cases, practical systems demand seamless integration of the nanodevice with higher order structures, for example, MEMS. Examples of this using carbon nanotube based chemical and biosensors

74

Brown Grease to Biodiesel Demonstration Project Report  

Science Conference Proceedings (OSTI)

Municipal wastewater treatment facilities have typically been limited to the role of accepting wastewater, treating it to required levels, and disposing of its treatment residuals. However, a new view is emerging which includes wastewater treatment facilities as regional resource recovery centers. This view is a direct result of increasingly stringent regulations, concerns over energy use, carbon footprint, and worldwide depletion of fossil fuel resources. Resources in wastewater include chemical and thermal energy, as well as nutrients, and water. A waste stream such as residual grease, which concentrates in the drainage from restaurants (referred to as Trap Waste), is a good example of a resource with an energy content that can be recovered for beneficial reuse. If left in wastewater, grease accumulates inside of the wastewater collection system and can lead to increased corrosion and pipe blockages that can cause wastewater overflows. Also, grease in wastewater that arrives at the treatment facility can impair the operation of preliminary treatment equipment and is only partly removed in the primary treatment process. In addition, residual grease increases the demand in treatment materials such as oxygen in the secondary treatment process. When disposed of in landfills, grease is likely to undergo anaerobic decay prior to landfill capping, resulting in the atmospheric release of methane, a greenhouse gas (GHG). This research project was therefore conceptualized and implemented by the San Francisco Public Utilities Commission (SFPUC) to test the feasibility of energy recovery from Trap Waste in the form of Biodiesel or Methane gas. The research goals are given below: ?¢???¢ To validate technology performance; ?¢???¢ To determine the costs and benefits [including economic, socioeconomic, and GHG emissions reduction] associated with co-locating this type of operation at a municipal wastewater treatment plant (WWTP); ?¢???¢ To develop a business case or model for replication of the program by other municipal agencies (as applicable). In order to accomplish the goals of the project, the following steps were performed: 1. Operation of a demonstration facility designed to receive 10,000 to 12,000 gallons of raw Trap Waste each day from private Trap Waste hauling companies. The demonstration facility was designed and built by Pacific Biodiesel Technologies (PBTech). The demonstration facility would also recover 300 gallons of Brown Grease per day from the raw Trap Waste. The recovered Brown Grease was expected to contain no more than 2% Moisture, Insolubles, and Unsaponifiables (MIU) combined. 2. Co-digestion of the side streams (generated during the recovery of 300 gallons of Brown Grease from the raw Trap Waste) with wastewater sludge in the WWTP?¢????s anaerobic digesters. The effects of the side streams on anaerobic digestion were quantified by comparison with baseline data. 3. Production of 240 gallons per day of ASTM D6751-S15 grade Biodiesel fuel via a Biodiesel conversion demonstration facility, with the use of recovered Brown Grease as a feedstock. The demonstration facility was designed and built by Blackgold Biofuels (BGB). Side streams from this process were also co-digested with wastewater sludge. Bench-scale anaerobic digestion testing was conducted on side streams from both demonstration facilities to determine potential toxicity and/or changes in biogas production in the WWTP anaerobic digester. While there is a lot of theoretical data available on the lab-scale production of Biodiesel from grease Trap Waste, this full-scale demonstration project was one of the first of its kind in the United States. The project?¢????s environmental impacts were expected to include: ?¢???¢ Reduction of greenhouse gas emissions by prevention of the release of methane at landfills. Although the combustion product of Biod

San Francisco Public Utilities Commission; URS Corporation; Biofuels, Blackgold; Carollo Engineers

2013-01-30T23:59:59.000Z

75

Polymer quenched prealloyed metal powder  

DOE Patents (OSTI)

A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as .ltoreq.1% Cr, .gtoreq.0.05% Zr .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Ni, .ltoreq.0.75% C, .ltoreq.0.1% B, .ltoreq.1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, and/or .ltoreq.3 % Cu. The process includes forming a non-densified metal sheet by consolidating a powder having an intermetallic alloy composition such as by roll compaction, tape casting or plasma spraying, forming a cold rolled sheet by cold rolling the non-densified metal sheet so as to increase the density and reduce the thickness thereof and annealing the cold rolled sheet. The powder can be a water, polymer or gas atomized powder which is subjecting to sieving and/or blending with a binder prior to the consolidation step. After the consolidation step, the sheet can be partially sintered. The cold rolling and/or annealing steps can be repeated to achieve the desired sheet thickness and properties. The annealing can be carried out in a vacuum furnace with a vacuum or inert atmosphere. During final annealing, the cold rolled sheet recrystallizes to an average grain size of about 10 to 30 .mu.m. Final stress relief annealing can be carried out in the B2 phase temperature range.

Hajaligol, Mohammad R. (Midlothian, VA); Fleischhauer, Grier (Midlothian, VA); German, Randall M. (State College, PA)

2001-01-01T23:59:59.000Z

76

Iowa Powder Atomization Technologies, Inc. | Department of Energy  

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

Iowa Powder Atomization Technologies, Inc. America's Next Top Energy Innovator Challenge 6067 likes Iowa Powder Atomization Technologies, Inc. Ames Laboratory Iowa Powder...

77

Intradermal needle-free powdered drug injection  

E-Print Network (OSTI)

This thesis presents a new method for needle-free powdered drug injection. The design, construction, and testing of a bench-top helium-powered device capable of delivering powder to controllable depths within the dermis ...

Liu, John (John Hsiao-Yung)

2012-01-01T23:59:59.000Z

78

SHAPING AND FORMING OF HIGH PERFORMANCE POWDER ...  

Science Conference Proceedings (OSTI)

A DENSIFICATION CONSTITUTIVE MODEL FOR POWDER BASED ALUMINUM MATRIX COMPOSITES MATERIALS: Erik J. Jilinsk, John J. Lewandowski,...

79

Advanced Titanium Powder Processing - Additive Layer ...  

Science Conference Proceedings (OSTI)

Symposium, Cost Affordable Titanium IV. Presentation Title, Advanced Titanium Powder Processing - Additive Layer Manufacturing (ALM) and Metal Injection...

80

Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter  

SciTech Connect

A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25-3 grams of an iron or nickel salt in water per gram of ash and drying a resulting slurry; (b) crushing and sizing a resulting solid; and (c) heating the thus-sized solid powder in hydrogen.

Liu, Kindtoken H. D. (Newark, DE); Hamrin, Jr., Charles E. (Lexington, KY)

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Molecular insights into the niche of harmful brown tides  

E-Print Network (OSTI)

Recurrent brown tide blooms caused by the harmful alga Alureococcus anophagefferens have decimated coastal ecosystems and shellfisheries along the Eastern U.S and South Africa. The exact mechanisms controlling bloom ...

Wurch, Louie L. (Louie Lorne)

2011-01-01T23:59:59.000Z

82

Study shows that 'brown carbon' contributes more to climate change...  

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

Study shows that 'brown carbon' contributes more to climate change than previously believed By Jared Sagoff * February 18, 2013 Tweet EmailPrint Much of the current effort toward...

83

HOT METHANE LINE LISTS FOR EXOPLANET AND BROWN DWARF ATMOSPHERES  

SciTech Connect

We present comprehensive experimental line lists of methane (CH{sub 4}) at high temperatures obtained by recording Fourier transform infrared emission spectra. Calibrated line lists are presented for the temperatures 300-1400 Degree-Sign C at twelve 100 Degree-Sign C intervals spanning the 960-5000 cm{sup -1} (2.0-10.4 {mu}m) region of the infrared. This range encompasses the dyad, pentad, and octad regions, i.e., all fundamental vibrational modes along with a number of combination, overtone and hot bands. Using our CH{sub 4} spectra, we have estimated empirical lower state energies (E{sub low} in cm{sup -1}) and our values have been incorporated into the line lists along with line positions ({nu}-bar in cm{sup -1}) and calibrated line intensities (S' in cm molecule{sup -1}). We expect our hot CH{sub 4} line lists to find direct application in the modeling of planetary atmospheres and brown dwarfs.

Hargreaves, Robert J.; Bernath, Peter F. [Department of Chemistry, University of York, Heslington, York YO10 5DD (United Kingdom); Beale, Christopher A.; Michaux, Laurent; Irfan, Melis, E-mail: rjh135@york.ac.uk, E-mail: cbeale@odu.edu, E-mail: lm595@york.ac.uk, E-mail: melis.irfan@postgrad.manchester.ac.uk, E-mail: pbernath@odu.edu [Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)

2012-09-20T23:59:59.000Z

84

Assessment of Browns Ferry 2 Cycle 12 Fuel Corrosion Failures  

Science Conference Proceedings (OSTI)

Boiling water reactor (BWR) fuel rods from 63 bundles of the Reload 10 GE13 (9x9) design developed leaks during Cycle 12 at Browns Ferry 2 (BF-2). Corrosion failures also occurred in Browns Ferry 3 (BF-3) and Vermont Yankee (VY) in a similar time frame. These fuel failures were investigated in the spent fuel pool and in two separate hot cell examination campaigns. This report compiles and assesses the significant findings of the root cause investigation.

2011-11-30T23:59:59.000Z

85

Laminated composite of magnetic alloy powder and ceramic ...  

Laminated composite of magnetic alloy powder and ceramic powder and process for making same United States Patent

86

Compaction and Sintering of Mo Powders  

SciTech Connect

To support the development of Mo-99 production by NorthStar Medical Technologies, LLC, Mo metal powders were evaluated for compaction and sintering characteristics as they relate to Mo-100 accelerator target disk fabrication. Powders having a natural isotope distribution and enriched Mo-100 powder were examined. Various powder characteristics are shown to have an effect on both the compaction and sintering behavior. Natural Mo powders could be cold pressed directly to >90% density. All of the powders, including the Mo-100 samples, could be sintered after cold pressing to >90% density. As an example, a compacted Mo-100 disk reached 89.7% density (9.52 g/cm3) after sintering at 1000 C for 1 hr. in flowing Ar/4%H2. Higher sintering temperatures were required for other powder samples. The relationships between processing conditions and the resulting densities of consolidated Mo disks will be presented.

Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Bryan, Chris [ORNL

2013-01-01T23:59:59.000Z

87

Thixoforming of Stellite Powder Compacts  

SciTech Connect

Thixoforming involves processing metallic alloys in the semi-solid state. The process requires the microstructure to be spheroidal when part-solid and part-liquid i.e. to consist of solid spheroids surrounded by liquid. The aim of this work was to investigate whether powder compacts can be used as feedstock for thixoforming and whether the consolidating pressure in the thixoformer can be used to remove porosity from the compact. The powder compacts were made from stellite 6 and stellite 21 alloys, cobalt-based alloys widely used for e.g. manufacturing prostheses. Isothermal heat treatments of small samples in the consolidated state showed the optimum thixoforming temperature to be in the range 1340 deg. C-1350 deg. C for both materials. The alloys were thixoformed into graphite dies and flowed easily to fill the die. Porosity in the thixoformed components was lower than in the starting material. Hardness values at various positions along the radius of the thixoformed demonstrator component were above the specification for both alloys.

Hogg, S. C. [Institute of PolymerTechnology and Materials Engineering, Loughborough University, Loughborough, LE11 3TU (United Kingdom); Atkinson, H. V. [Department of Engineering, University of Leicester, University Rd., Leicester LE1 7RH (United Kingdom); Kapranos, P. [Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

2007-04-07T23:59:59.000Z

88

Process for the synthesis of iron powder  

DOE Patents (OSTI)

A process for preparing iron powder suitable for use in preparing the iron-potassium perchlorate heat-powder fuel mixture used in thermal batteries, comprises preparing a homogeneous, dense iron oxide hydroxide precipitate by homogeneous precipitation from an aqueous mixture of a ferric salt, formic or sulfuric acid, ammonium hydroxide and urea as precipitating agent; and then reducing the dense iron oxide hydroxide by treatment with hydrogen to prepare the iron powder. 2 figs.

Welbon, W.W.

1983-11-08T23:59:59.000Z

89

Process for the synthesis of iron powder  

DOE Patents (OSTI)

A process for preparing iron powder suitable for use in preparing the iron-potassium perchlorate heat-powder fuel mixture used in thermal batteries, comprises preparing a homogeneous, dense iron oxide hydroxide precipitate by homogeneous precipitation from an aqueous mixture of a ferric salt, formic or sulfuric acid, ammonium hydroxide and urea as precipitating agent; and then reducing the dense iron oxide hydroxide by treatment with hydrogen to prepare the iron powder.

Not Available

1982-03-06T23:59:59.000Z

90

Process for the synthesis of iron powder  

DOE Patents (OSTI)

A process for preparing iron powder suitable for use in preparing the iron-potassium perchlorate heat-powder fuel mixture used in thermal batteries, comprises preparing a homogeneous, dense iron oxide hydroxide precipitate by homogeneous precipitation from an aqueous mixture of a ferric salt, formic or sulfuric acid, ammonium hydroxide and urea as precipitating agent; and then reducing the dense iron oxide hydroxide by treatment with hydrogen to prepare the iron powder.

Welbon, William W. (Belleair, FL)

1983-01-01T23:59:59.000Z

91

POWDERED AEROSOLS PERFORHANCE IN VARIOUS FIRE ...  

Science Conference Proceedings (OSTI)

... introduced into the car-parking tower without the ... In order to design an effective powdered ... rate of combustion), atmospheric (wind airflow) conditions ...

2011-11-01T23:59:59.000Z

92

Ultrafine hydrogen storage powders - Energy Innovation Portal  

A method of making hydrogen storage powder resistant to fracture in service involves forming a melt having the appropriate composition for the hydrogen storage ...

93

The Production and Processing of Titanium Powder  

Science Conference Proceedings (OSTI)

Mar 6, 2013 ... Cost Affordable Titanium IV: The Production and Processing of Titanium Powder Sponsored by: TMS Structural Materials Division, TMS:...

94

Laboratory Evaluation of Bicarbonate Powders as Fire ...  

Science Conference Proceedings (OSTI)

... For the high strain case, the amount of powder required to extinguish the !lame was so small that the particle delivery was difficult to accurately ...

2012-10-21T23:59:59.000Z

95

Process for synthesizing compounds from elemental powders  

DOE Patents (OSTI)

A process for synthesizing intermetallic compounds from elemental powders. The elemental powders are initially combined in ratio a which approximates the stoichiometric composition of the intermetallic compound. The mixed powders are then formed into a compact which is heat treated at a controlled rate of heating such that an exothermic reaction between the elements is initiated. The heat treatment may be performed under controlled conditions ranging from a vacuum (pressureless sintering) to compression (hot pressing) to produce a desired densification of the intermetallic compound. In a preferred form of the invention, elemental powders of Fe and Al are combined to form aluminide compounds of Fe{sub 3}Al and FeAl.

Rabin, B.H.; Wright, R.N.

1990-01-01T23:59:59.000Z

96

COURSE NOTES: Powder Metallurgy: Materials, Processes ... - TMS  

Science Conference Proceedings (OSTI)

Feb 10, 2007 ... A complete course on powder metallurgy is offered for sale on CD-ROM. This course is targeted at students and engineers and includes...

97

Powder Injection Molding - Available Technologies - PNNL  

Summary. Presented here is a novel and innovative means of powder injection molding (PIM) of reactive refractory metals, such as titanium and its ...

98

Powder Panels for Dry Bay Fire Protection  

Science Conference Proceedings (OSTI)

... powder panel by a rotor blade resulted in ... by one of the vehicle manufacturers for the ... specific requirement is proprietary to the manufacturer, but will ...

2011-10-20T23:59:59.000Z

99

Neutron Powder Diffraction Workshop (NPD2011)  

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

Workshop Contact Information Instructors Application Form Sample Description HB2A at HFIR POWGEN at SNS filler About the Workshop Neutron powder diffraction is a widely used...

100

(ns) Al-2024 Alloy Obtained via Cryogenic Milling  

Science Conference Proceedings (OSTI)

Milling Al-2024 powder of big particle size (>100 microns) in cryogenic regime resulted in nanostructured powder of 46 nm grain size after 18h. Furthermore...

Note: This page contains sample records for the topic "brown powder obtained" 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

Brown-Atchison E C A Inc | Open Energy Information  

Open Energy Info (EERE)

Brown-Atchison E C A Inc Brown-Atchison E C A Inc Jump to: navigation, search Name Brown-Atchison E C A Inc Place Kansas Utility Id 2354 Utility Location Yes Ownership C NERC Location SPP NERC SPP Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Area Lighting Metered (AL-M) Lighting Area Lighting Unmetered (AL-U) Lighting General Service Large (GSL) Commercial General Service Small (Single Phase GSS-10) Commercial General Service Small (Three Phase GSS-30) Commercial Public Building Service- Single Phase (PB-10) Commercial Public Building Service- Three Phase (PB-30) Commercial

102

DOE - Office of Legacy Management -- Brown University - Metcalf Research  

Office of Legacy Management (LM)

Brown University - Metcalf Research Brown University - Metcalf Research Lab - RI 01 FUSRAP Considered Sites Site: Brown University (Metcalf Research Lab.) (RI.01 ) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: Providence , Rhode Island RI.01-1 Evaluation Year: 1987 RI.01-1 Site Operations: Research/Development on the preparation of pure halides of heavy metals, Bench Scale Process, and Sample & Analysis. RI.01-1 Site Disposition: Eliminated - Potential for residual radioactive contamination from small quantities of radioactive material is considered remote RI.01-1 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium, Thorium RI.01-1 Radiological Survey(s): None Indicated

103

The Harold Brown view: LLNL then and now  

Science Conference Proceedings (OSTI)

Harold Brown was the Laboratory's third Director, serving from 1960 to 1961. He joined the Livermore laboratory in 1952. At Livermore, Brown worked on the Polaris warhead and on Project Plowshare, program designed to apply nuclear explosives to peaceful uses (such as excavating harbors). Brown succeeded Edward Teller as Director of the Livermore Laboratory in July 1960. His tenure as Director was particularly challenging as these were the years of the moratorium on nuclear testing. He was the driving force in expanding the Laboratory's capabilities for simulating nuclear explosions with computers. As part of LLNL's 40th anniversary observances, Brown was invited to lecture on his views of the changing world and the role of the Laboratory. He reminisced about events that occurred in the Laboratory's early years, with an eye to finding lessons for the future. In particular, he cited Project Plowshare and the MX ICBM as examples of projects that were technologically and economically feasible but unacceptable in terms of public perception. Brown also discussed the international security environment and the Laboratory's role in support of the national security goals of the United States. He defined U.S. security as protecting America against external threats to its physical survival, to its democratic form of government, or to the well-being of the people of the United States. By this definition, issues of international trade and market access have a strong bearing on national security. Thus the Laboratory can find much important and interesting work to do under the heading of national security and economic competitiveness. Brown also pointed out, however, that working effectively with the private sector will take a change in culture since the private-sector market is very different from and more competitive than the nuclear weapons world or the government's nondefense market.

Brown, H. (Center for Strategic and International Studies, Washington, DC (United States))

1993-08-01T23:59:59.000Z

104

Powdered coal air dispersion nozzle  

SciTech Connect

An improved coal/air dispersion nozzle introduces fuel into the combustion chamber of a gas turbine engine as a finely atomized, dispersed spray for a uniform combustion. The nozzle has an inlet that receives finely powdered coal from a coal transport or coal/air fluidizer system and a scroll swirl generator is included within the nozzle to swirl a fluidized coal/air mixture supplied to the inlet of the nozzle. The scroll is in the form of a thin, flat metal sheet insert, twisted along its length, and configured to prevent build-up of coal particles within the nozzle prior to ejection from its outlet. Airblast air jets are included along the length of the nozzle body to assist in the discharge of the fluidized coal from the nozzle outlet and an angular pintle tip overlies the outlet to redirect coal/air mixture through a desired fluidized coal spray angle.

Kosek, T.P.; Steinhilper, E.A.

1981-10-27T23:59:59.000Z

105

Intern experience at Brown & Root, Inc.: an internship report  

E-Print Network (OSTI)

To document that the objectives of the internship were met, the report examines the organizational approach at Brown & Root and then describes seven major job assignments that were completed by the author during the internship. The internship report outlines the process by which Brown & Root carries out the design and construction of offshore oil and gas production facilities ... A supplementary presentation of the author's previous experience at an oil company permits a comparison of the viewpoints of engineering and construction contractors and oil companies.

Kibbee, Stephen Edward, 1951-

1979-05-01T23:59:59.000Z

106

Continuous Process for Low-Cost, High-Quality YSZ Powder  

DOE Green Energy (OSTI)

This report describes results obtained by NexTech Materials, Ltd. in a project funded by DOE under the auspices of the Solid-State Energy Conversion Alliance (SECA). The project focused on development of YSZ electrolyte powder synthesis technology that could be ''tailored'' to the process-specific needs of different solid oxide fuel cell (SOFC) designs being developed by SECA's industry teams. The work in the project involved bench-scale processing work aimed at establishing a homogeneous precipitation process for producing YSZ electrolyte powder, scaleup of the process to 20-kilogram batch sizes, and evaluation of the YSZ powder products produced by the process. The developed process involved the steps of: (a) preparation of an aqueous hydrous oxide slurry via coprecipitation; (b) washing of residual salts from the precipitated hydroxide slurry followed by drying; (c) calcination of the dried powder to crystallize the YSZ powder and achieve desired surface area; and (d) milling of the calcined powder to targeted particle size. YSZ powders thus prepared were subjected to a comprehensive set of characterization and performance tests, including particle size distribution and surface area analyses, sintering performance studies, and ionic conductivity measurements. A number of different YSZ powder formulations were established, all of which had desirable performance attributes relative to commercially available YSZ powders. Powder characterization and performance metrics that were established at the onset of the project were met or exceeded. A manufacturing cost analysis was performed, and a manufactured cost of $27/kg was estimated based on this analysis. The analysis also allowed an identification of process refinements that would lead to even lower cost.

Scott L. Swartz; Michael Beachy; Matthew M. Seabaugh

2006-03-31T23:59:59.000Z

107

Powder River 0 20 40 KILOMETERS  

E-Print Network (OSTI)

1 Monitoring Coal Bed Methane Production: A Case Study from the Powder River Basin, Wyoming, United The growing significance of the Powder River Basin's Coal Bed Methane (CBM) to United States domestic energy% of gas mostly methane, hence the name Coal Bed Methane (CBM). The types of coal, in increasing order

108

Wet powder seal for gas containment  

DOE Patents (OSTI)

A gas seal is formed by a compact layer of an insoluble powder and liquid filling the fine interstices of that layer. The smaller the particle size of the selected powder, such as sand or talc, the finer will be the interstices or capillary spaces in the layer and the greater will be the resulting sealing capacity, i.e., the gas pressure differential which the wet powder layer can withstand. Such wet powder seal is useful in constructing underground gas reservoirs or storage cavities for nuclear wastes as well as stopping leaks in gas mains buried under ground or situated under water. The sealing capacity of the wet powder seal can be augmented by the hydrostatic head of a liquid body established over the seal.

Stang, L.G.

1979-08-29T23:59:59.000Z

109

Wet powder seal for gas containment  

DOE Patents (OSTI)

A gas seal is formed by a compact layer of an insoluble powder and liquid filling the fine interstices of that layer. The smaller the particle size of the selected powder, such as sand or talc, the finer will be the interstices or capillary spaces in the layer and the greater will be the resulting sealing capacity, i.e., the gas pressure differential which the wet powder layer can withstand. Such wet powder seal is useful in constructing underground gas reservoirs or storage cavities for nuclear wastes as well as stopping leaks in gas mains buried under ground or situated under water. The sealing capacity of the wet powder seal can be augmented by the hydrostatic head of a liquid body established over the seal.

Stang, Louis G. (Sayville, NY)

1982-01-01T23:59:59.000Z

110

Flowing with the Tide:Epiphytic Host-Specificity and Phenotypic Plasticity of the Brown Alga Padina boryana  

E-Print Network (OSTI)

PLASTICITY OF THE BROWN ALGA PADINA BORYANA SIERRA M. FLYNN94720 USA Abstract. Epiphytic algae form complex communitiesmacroalgae hosts. The brown alga Padina boryana acts as a

Flynn, Sierra Michelle

2011-01-01T23:59:59.000Z

111

Photon Sciences | Beamlines | XPD: X-ray Powder Diffraction  

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

XPD: X-ray Powder Diffraction XPD: X-ray Powder Diffraction Poster | Fact Sheet | Preliminary Design Report Scientific Scope XPD is a tunable facility with the ability to collect diffraction data at high x-ray energies (40keV-80keV), offering rapid acquisition (millisecond) and high angular resolution capabilities on the same instrument. XPD addresses future scientific challenges in, for example, hydrogen storage, CO2 sequestration, advanced structural ceramics, catalysis, and materials processing. Such materials of high technological value often are complex, nanostructured and heterogeneous. The scientific grand challenge is to obtain robust and quantitative (micro)structural information, not only in the ground state at ambient conditions, but also in situ or in operando with varying temperature, pressure, magnetic/electric/stress

112

Edmund G. Brown, Jr. TEST METHOD FOR CALCULATING  

E-Print Network (OSTI)

-VOLTAGE EXTERNAL AC-DC POWER SUPPLIES PIERFINALREPORT Prepared For: California Energy Commission Public InterestEdmund G. Brown, Jr. Governor TEST METHOD FOR CALCULATING THE ENERGY EFFICIENCY OF SINGLE Energy Research Program Prepared By: Ecos Power Electronics Application Center July 2011 CEC-500

113

Habitable Planets Eclipsing Brown Dwarfs: Strategies for Detection and Characterization  

E-Print Network (OSTI)

Given the very close proximity of their habitable zones, brown dwarfs represent high-value targets in the search for nearby transiting habitable planets that may be suitable for follow-up occultation spectroscopy. In this paper we develop search strategies to find habitable planets transiting brown dwarfs depending on their maximum habitable orbital period (PHZ out). Habitable planets with PHZ out shorter than the useful duration of a night (e.g. 8-10 hrs) can be screened with 100 percent completeness from a single location and in a single night (near-IR). More luminous brown dwarfs require continuous monitoring for longer duration, e.g. from space or from a longitude-distributed network (one test scheduling achieved - 3 telescopes, 13.5 contiguous hours). Using a simulated survey of the 21 closest known brown dwarfs (within 7 pc) we find that the probability of detecting at least one transiting habitable planet is between 4.5 +5.6-1.4 and 56 +31-13 percent, depending on our assumptions. We calculate that bro...

Belu, Adrian R; Raymond, Sean N; Pall, Enric; Street, Rachel; Sahu, D K; Von Braun, Kaspar; Bolmont, Emeline; Figueira, Pedro; Anupama, G C; Ribas, Ignasi

2013-01-01T23:59:59.000Z

114

Software Reuse in High Performance Computing Shirley Browne  

E-Print Network (OSTI)

Software Reuse in High Performance Computing Shirley Browne University of Tennessee 107 Ayres Hall high performance computing architectures in the form of distributed memorymul- tiprocessors have become of programming applications to run on these machines. Economical use of high performance computing and subsequent

Dongarra, Jack

115

Software Reuse in High Performance Computing Shirley Browne  

E-Print Network (OSTI)

Software Reuse in High Performance Computing Shirley Browne University of Tennessee 107 Ayres Hall high performance computing architectures in the form of distributed memory mul­ tiprocessors have and cost of programming applications to run on these machines. Economical use of high performance computing

Dongarra, Jack

116

Chemical Engineering The George R. Brown School of Engineering  

E-Print Network (OSTI)

110 Chemical Engineering The George R. Brown School of Engineering Chair Kyriacos Zygourakis of study leading to the nonthesis Master of Chemical Engineering (M.Ch.E.) degree. A joint M, and biomedical engineering. #12;Chemical Engineering 111 Degree Requirements for B.S. in Chemical Engineering

Richards-Kortum, Rebecca

117

Chemical Engineering The George R. Brown School of Engineering  

E-Print Network (OSTI)

117 Chemical Engineering The George R. Brown School of Engineering Chair Kyriacos Zygourakis,studentsmayapplyforafifthyearofstudyleadingtothenonthesis Master of Chemical Engineering (M.Ch.E.) degree. A joint M.B.A./M.Ch.E. degree is also available, and biomedical engineering. #12;Chemical Engineering 119118 DEPARTMENTS / Chemical Engineering For CENG 301 Math

Richards-Kortum, Rebecca

118

Chemical Engineering The George R. Brown School of Engineering  

E-Print Network (OSTI)

120 Chemical Engineering The George R. Brown School of Engineering Chair Kyriacos Zygourakis,studentsmayapplyforafifthyearofstudyleadingtothenonthesis Master of Chemical Engineering (M.Ch.E.) degree. A joint M.B.A./M.Ch.E. degree is also available, and biomedical engineering. #12;Chemical Engineering 121 Degree Requirements for B.S. in Chemical Engineering

Richards-Kortum, Rebecca

119

BrownMap: enforcing power budget in shared data centers  

Science Conference Proceedings (OSTI)

In this work, we investigate mechanisms to ensure that a shared data center can operate within a power budget, while optimizing a global objective function(e.g., maximize the overall revenue earned by the provider). We present the BrownMap methodology ...

Akshat Verma; Pradipta De; Vijay Mann; Tapan Nayak; Amit Purohit; Gargi Dasgupta; Ravi Kothari

2010-11-01T23:59:59.000Z

120

Edmund G. Brown, Jr. PLUG-IN HYBRID ELECTRIC VEHICLE  

E-Print Network (OSTI)

Edmund G. Brown, Jr. Governor PLUG-IN HYBRID ELECTRIC VEHICLE RESEARCH ROADMAP Davis Plug-In Hybrid Electric Vehicle Research Center June 2011 CEC-500-2010-039 #12; #12; Prepared By: UC Davis Plug-In Hybrid Electric Vehicle Research Center Dr. Thomas Turrentine, University

Note: This page contains sample records for the topic "brown powder obtained" 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

Dynamic Response Calibration of the Nell Brown Conductivity Cell  

Science Conference Proceedings (OSTI)

Dynamic response calibrations and flow visualization studies have been made for the standard, 3 cm long conductivity cell produced by Neil Brown Instrument Systems. This probe is used on wire-lowered CTD's as well as on vehicles that move freely ...

Michael C. Gregg; John C. Schedvin; William C. Hess; Thomas B. Meagher

1982-07-01T23:59:59.000Z

122

Structural Evolution in Mechanically Alloyed Al-Fe Powder Mixtures  

Science Conference Proceedings (OSTI)

[4,5] Mechanical alloying is a solid-state powder processing technique which involves repeated welding, fracturing and rewelding of powder particles in a dry, ...

123

Simulation of Powder Compact Forging Process for Producing a ...  

Science Conference Proceedings (OSTI)

Presentation Title, Simulation of Powder Compact Forging Process for Producing a ... Powder compact forging is a recently developed manufacturing process to...

124

Investigation of Powder Metallurgy Titanium Matrix Composites by ...  

Science Conference Proceedings (OSTI)

Presentation Title, Investigation of Powder Metallurgy Titanium Matrix Composites by Planetary Ball-milling of Ti Powder Dispersed with Vapour Grown Carbon...

125

Fabrication of Nanostructural Aluminum Alloy Powder with Ball ...  

Science Conference Proceedings (OSTI)

The aim of this paper is to fabricate aluminum alloy powder with nanostructure using ball milling method. The commercial Al-Mg-Cu alloy powder was milled...

126

New Atomization Technology for Fine Amorphous Alloy Powder ...  

Science Conference Proceedings (OSTI)

However, the present conventional powder-making processes (gas and water atomization) seem difficult to reduce the price of amorphous alloy powders.

127

POWGEN - The Powder Diffractometer at SNS - ORNL Neutron Sciences  

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

Powder Diffractometer at SNS POWGEN news: Research makes the cover of Inorganic Chemistry POWGEN detector array POWGEN detector array. POWGEN is a general-purpose powder...

128

Modelling and Simulation of Tensile Fracture in High Velocity Compacted Metal Powder  

Science Conference Proceedings (OSTI)

In cold uniaxial powder compaction, powder is formed into a desired shape with rigid tools and a die. After pressing, but before sintering, the compacted powder is called green body. A critical property in the metal powder pressing process is the mechanical properties of the green body. Beyond a green body free from defects, desired properties are high strength and uniform density. High velocity compaction (HVC) using a hydraulic operated hammer is a production method to form powder utilizing a shock wave. Pre-alloyed water atomised iron powder has been HVC-formed into circular discs with high densities. The diametral compression test also called the Brazilian disc test is an established method to measure tensile strength in low strength material like e.g. rock, concrete, polymers and ceramics. During the test a thin disc is compressed across the diameter to failure. The compression induces a tensile stress perpendicular to the compressed diameter. In this study the test have been used to study crack initiation and the tensile fracture process of HVC-formed metal powder discs with a relative density of 99%. A fictitious crack model controlled by a stress versus crack-width relationship is utilized to model green body cracking. Tensile strength is used as a failure condition and limits the stress in the fracture interface. The softening rate of the model is obtained from the corresponding rate of the dissipated energy. The deformation of the powder material is modelled with an elastic-plastic Cap model. The characteristics of the tensile fracture development of the central crack in a diametrically loaded specimen is numerically studied with a three dimensional finite element simulation. Results from the finite element simulation of the diametral compression test shows that it is possible to simulate fracturing of HVC-formed powder. Results from the simulation agree reasonably with experiments.

Jonsen, P.; Haeggblad, H.-A. [Division of Solid Mechanics, Department of Applied Physics and Mechanical Engineering, Luleaa University of Technology, 971 87 Luleaa (Sweden)

2007-05-17T23:59:59.000Z

129

Infrared Searches for Dark Matter in the Form of Brown Dwarfs  

E-Print Network (OSTI)

Brown dwarfs, stars with insufficient mass to burn hydrogen, could contribute to the dark matter in the Galactic disk, galactic halos or even a background critical density. We consider the detectability of such brown dwarfs in various scenarios, extending previous work by allowing for the possibility that they may have an extended mass spectrum or be clumped into dark clusters. We investigate the constraints placed on such scenarios by the \\iras survey. Whilst an extrapolation of the mass function of visible disk stars makes it unlikely that brown dwarfs comprise all of the proposed disk dark matter, \\iras does not exclude brown dwarfs providing the dark matter in our own halo or a cosmological background. Neither does it improve on existing dynamical constraints on the mass and radius of brown dwarf clusters in our halo. Future satellites such as \\iso and \\sirtf will either detect brown dwarfs or brown dwarf clusters or else severely constrain their contribution to the dark matter.

E. J. Kerins; B. J. Carr

1993-09-02T23:59:59.000Z

130

Continuous blending of dry pharmaceutical powders  

E-Print Network (OSTI)

Conventional batch blending of pharmaceutical powders coupled with long quality analysis times increases the production cycle time leading to strained cash flows. Also, scale-up issues faced in process development causes ...

Pernenkil, Lakshman

2008-01-01T23:59:59.000Z

131

Biaxially textured articles formed by powder metallurgy  

DOE Patents (OSTI)

A biaxially textured alloy article comprises Ni powder and at least one powder selected from the group consisting of Cr, W, V, Mo, Cu, Al, Ce, YSZ, Y, Rare Earths, (RE), MgO, CeO.sub.2, and Y.sub.2 O.sub.3 ; compacted and heat treated, then rapidly recrystallized to produce a biaxial texture on the article. In some embodiments the alloy article further comprises electromagnetic or electro-optical devices and possesses superconducting properties.

Goyal, Amit (Knoxville, TN); Williams, Robert K. (Knoxville, TN)

2001-01-01T23:59:59.000Z

132

Understanding Brown Carbon Aerosols and Their Role in Climate Change  

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

Brown Carbon Aerosols Brown Carbon Aerosols Tiny aerosol particles in the atmosphere are a possible cause of climate change. Among the many contributors to climate change are aerosols in the atmosphere. These tiny particles suspended in the air come from many sources, some natural and some man-made. Some aerosols are organic (containing carbon), while others are inorganic (such as sea salt and sulfates). Most aerosols reflect sunlight, and some also absorb it. Many of these nanoparticles have severe health effects in addition to climate effects. Human activities that produce aerosols include transportation, industry, and agriculture. Black carbon particles (a component of soot) originating from combustion processes have been known for some time to absorb sunlight and warm the

133

Slip casting nano-particle powders for making transparent ceramics  

DOE Patents (OSTI)

A method of making a transparent ceramic including the steps of providing nano-ceramic powders in a processed or unprocessed form, mixing the powders with de-ionized water, the step of mixing the powders with de-ionized water producing a slurry, sonifing the slurry to completely wet the powder and suspend the powder in the de-ionized water, separating very fine particles from the slurry, molding the slurry, and curing the slurry to produce the transparent ceramic.

Kuntz, Joshua D. (Livermore, CA); Soules, Thomas F. (Livermore, CA); Landingham, Richard Lee (Livermore, CA); Hollingsworth, Joel P. (Oakland, CA)

2011-04-12T23:59:59.000Z

134

Dynamic compaction of tungsten carbide powder.  

Science Conference Proceedings (OSTI)

The shock compaction behavior of a tungsten carbide powder was investigated using a new experimental design for gas-gun experiments. This design allows the Hugoniot properties to be measured with reasonably good accuracy despite the inherent difficulties involved with distended powders. The experiments also provide the first reshock state for the compacted powder. Experiments were conducted at impact velocities of 245, 500, and 711 m/s. A steady shock wave was observed for some of the sample thicknesses, but the remainder were attenuated due to release from the back of the impactor or the edge of the sample. The shock velocity for the powder was found to be quite low, and the propagating shock waves were seen to be very dispersive. The Hugoniot density for the 711 m/s experiment was close to ambient crystal density for tungsten carbide, indicating nearly complete compaction. When compared with quasi-static compaction results for the same material, the dynamic compaction data is seen to be significantly stiffer for the regime over which they overlap. Based on these initial results, recommendations are made for improving the experimental technique and for future work to improve our understanding of powder compaction.

Gluth, Jeffrey Weston; Hall, Clint Allen; Vogler, Tracy John; Grady, Dennis Edward

2005-04-01T23:59:59.000Z

135

Die-target for dynamic powder consolidation  

DOE Patents (OSTI)

A die/target is disclosed for consolidation of a powder, especially an atomized rapidly solidified metal powder, to produce monoliths by the dynamic action of a shock wave, especially a shock wave produced by the detonation of an explosive charge. The die/target comprises a rectangular metal block having a square primary surface with four rectangular mold cavities formed therein to receive the powder. The cavities are located away from the geometrical center of the primary surface and are distributed around such center while also being located away from the geometrical diagonals of the primary surface to reduce the action of reflected waves so as to avoid tensile cracking of the monoliths. The primary surface is covered by a powder retention plate which is engaged by a flyer plate to transmit the shock wave to the primary surface and the powder. Spawl plates are adhesively mounted on other surfaces of the block to act as momentum traps so as to reduce reflected waves in the block. 4 figs.

Flinn, J.E.; Korth, G.E.

1985-06-27T23:59:59.000Z

136

Field Testing of Activated Carbon Injection Options for Mercury Control at TXU's Big Brown Station  

Science Conference Proceedings (OSTI)

The primary objective of the project was to evaluate the long-term feasibility of using activated carbon injection (ACI) options to effectively reduce mercury emissions from Texas electric generation plants in which a blend of lignite and subbituminous coal is fired. Field testing of ACI options was performed on one-quarter of Unit 2 at TXU's Big Brown Steam Electric Station. Unit 2 has a design output of 600 MW and burns a blend of 70% Texas Gulf Coast lignite and 30% subbituminous Powder River Basin coal. Big Brown employs a COHPAC configuration, i.e., high air-to-cloth baghouses following cold-side electrostatic precipitators (ESPs), for particulate control. When sorbent injection is added between the ESP and the baghouse, the combined technology is referred to as TOXECON{trademark} and is patented by the Electric Power Research Institute in the United States. Key benefits of the TOXECON configuration include better mass transfer characteristics of a fabric filter compared to an ESP for mercury capture and contamination of only a small percentage of the fly ash with AC. The field testing consisted of a baseline sampling period, a parametric screening of three sorbent injection options, and a month long test with a single mercury control technology. During the baseline sampling, native mercury removal was observed to be less than 10%. Parametric testing was conducted for three sorbent injection options: injection of standard AC alone; injection of an EERC sorbent enhancement additive, SEA4, with ACI; and injection of an EERC enhanced AC. Injection rates were determined for all of the options to achieve the minimum target of 55% mercury removal as well as for higher removals approaching 90%. Some of the higher injection rates were not sustainable because of increased differential pressure across the test baghouse module. After completion of the parametric testing, a month long test was conducted using the enhanced AC at a nominal rate of 1.5 lb/Macf. During the time that enhanced AC was injected, the average mercury removal for the month long test was approximately 74% across the test baghouse module. ACI was interrupted frequently during the month long test because the test baghouse module was bypassed frequently to relieve differential pressure. The high air-to-cloth ratio of operations at this unit results in significant differential pressure, and thus there was little operating margin before encountering differential pressure limits, especially at high loads. This limited the use of sorbent injection as the added material contributes to the overall differential pressure. This finding limits sustainable injection of AC without appropriate modifications to the plant or its operations. Handling and storage issues were observed for the TOXECON ash-AC mixture. Malfunctioning equipment led to baghouse dust hopper plugging, and storage of the stagnant material at flue gas temperatures resulted in self-heating and ignition of the AC in the ash. In the hoppers that worked properly, no such problems were reported. Economics of mercury control at Big Brown were estimated for as-tested scenarios and scenarios incorporating changes to allow sustainable operation. This project was funded under the U.S. Department of Energy National Energy Technology Laboratory project entitled 'Large-Scale Mercury Control Technology Field Testing Program--Phase II'.

John Pavlish; Jeffrey Thompson; Christopher Martin; Mark Musich; Lucinda Hamre

2009-01-07T23:59:59.000Z

137

Atomization methods for forming magnet powders  

SciTech Connect

The invention encompasses methods of utilizing atomization, methods for forming magnet powders, methods for forming magnets, and methods for forming bonded magnets. The invention further encompasses methods for simulating atomization conditions. In one aspect, the invention includes an atomization method for forming a magnet powder comprising: a) forming a melt comprising R.sub.2.1 Q.sub.13.9 B.sub.1, Z and X, wherein R is a rare earth element; X is an element selected from the group consisting of carbon, nitrogen, oxygen and mixtures thereof; Q is an element selected from the group consisting of Fe, Co and mixtures thereof; and Z is an element selected from the group consisting of Ti, Zr, Hf and mixtures thereof; b) atomizing the melt to form generally spherical alloy powder granules having an internal structure comprising at least one of a substantially amorphous phase or a substantially nanocrystalline phase; and c) heat treating the alloy powder to increase an energy product of the alloy powder; after the heat treatment, the alloy powder comprising an energy product of at least 10 MGOe. In another aspect, the invention includes a magnet comprising R, Q, B, Z and X, wherein R is a rare earth element; X is an element selected from the group consisting of carbon, nitrogen, oxygen and mixtures thereof; Q is an element selected from the group consisting of Fe, Co and mixtures thereof; and Z is an element selected from the group consisting of Ti, Zr, Hf and mixtures thereof; the magnet comprising an internal structure comprising R.sub.2.1 Q.sub.13.9 B.sub.1.

Sellers, Charles H. (Idaho Falls, ID); Branagan, Daniel J. (Idaho Falls, ID); Hyde, Timothy A. (Idaho Falls, ID)

2000-01-01T23:59:59.000Z

138

Dry powder mixes comprising phase change materials  

DOE Green Energy (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft. 3 figs.

Salyer, I.O.

1995-12-26T23:59:59.000Z

139

Synthesis of ultrafine powders by microwave heating  

DOE Patents (OSTI)

A method of synthesizing ultrafine powders using microwaves is described. A water soluble material is dissolved in water and the resulting aqueous solution is exposed to microwaves until the water has dissolved. The resulting material is an ultrafine powder. This method can be used to make Al/sub 2/O/sub 3/, NiO /plus/ Al/sub 2/O/sub 3/ and NiO as well as a number of other materials including GaBa/sub 2/Cu/sub 3/O/sub x/. 1 tab.

Meek, T.T.; Sheinberg, H.; Blake, R.D.

1987-04-24T23:59:59.000Z

140

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft. 3 figures.

Salyer, I.O.

1994-12-06T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft.

Salyer, Ival O. (Dayton, OH)

1994-01-01T23:59:59.000Z

142

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and particularly in applications for heat protection for heat sensitive items, such as aircraft flight recorders, and for preventing brake fade in automobiles, buses, trucks and aircraft.

Salyer, Ival O. (Dayton, OH)

1995-01-01T23:59:59.000Z

143

Process for preparing active oxide powders  

DOE Patents (OSTI)

An improved process for preparing active oxide powders in which cation hydroxide gels, prepared in the conventional manner are chemically dried by alternately washing the gels with a liquid organic compound having polar characteristics and a liquid organic compound having nonpolar characteristics until the mechanical water is removed from the gel. The water-free cation hydroxide is then contacted with a final liquid organic wash to remove the previous organic wash and speed drying. The dried hydroxide treated in the conventional manner will form a highly sinterable active oxide powder.

Berard, Michael F. (Ames, IA); Hunter, Jr., Orville (Ames, IA); Shiers, Loren E. (Ames, IA); Dole, Stephen L. (Burnt Hills, NY); Scheidecker, Ralph W. (Ames, IA)

1979-02-20T23:59:59.000Z

144

Biosorption of heavy metal ions to brown algae, Macrocystis pyrifera, Kjellmaniella crassiforia, and Undaria pinnatifida  

SciTech Connect

A fundamental study of the application of brown algae to the aqueous-phase separation of toxic heavy metals was carried out. The biosorption characteristics of cadmium and lead ions were determined with brown algae, Macrocystis pyrifera, Kjellmaniella crassiforia, and Undaria pinnatifida. A metal binding model proposed by the authors was used for the description of metal binding data. The results showed that the biosorption of bivalent metal ions to brown algae was due to bivalent binding to carboxylic groups on alginic acid in brown algae.

Seki, Hideshi; Suzuki, Akira [Hokkaido Univ., Hakodate (Japan)

1998-10-01T23:59:59.000Z

145

Front Row (left to right): Bryan Reed, Wayne King, Nigel Browning ...  

DTEM Team Members: Front Row (left to right): Bryan Reed, Wayne King, Nigel Browning, Judy Kim, Michael Armstrong Back Row (left to right): Thomas LaGrange ...

146

Hydroliquefaction of Big Brown lignite in supercritical fluids  

E-Print Network (OSTI)

Big Brown lignite was liquefied in a fixed bed tube reactor. Three solvents were used in the liquefaction studies, toluene, cyclohexane and methanol. Two co-solvents, tetralin and water were used with toluene. The effects of the solvents and co-solvents were investigated. Supercritical fluid is the fluid at the temperature and pressure above its critical values. Toluene was the main supercritical fluid used in this study. Tetralin and water as co-solvents can contribute hydrogen to stabilize the free radicals produced during liquefaction reaction. The total conversion of Big Brown lignite and yield of liquid were increased. Water is not as good as tetralin in producing hydrogen, but it can increase the polarity of the solvent, which increases the solvency of supercritical fluids. The liquid product was found to consist primarily of saturated hydrocarbons. It illustrated that the free radicals were saturated by hydrogen during liquefaction. Alkylated aromatics and furans are also common chemical species present in the liquid products. The aromatic species were predominantly alkylated phenols, benzenes, indenes, pyridines and naphthalenes. At the supercritical conditions of this study, temperature and flowrate of the solvent were not important to the conversion of Big Brown lignite and yield of liquid, since supercritical fluids have gas-like viscosities with very high solubilities. To get more liquid products, the main point is to produce more free radicals from coal, inhibit the recombination of these radicals, and prevent the decomposition of these radicals to gas. Tetralin and water are good co-solvents for coal hydroliquefaction. Further research on the mechanism of water as a co-solvent in coal hydroliquefaction was recommended.

Chen, Hui

1996-01-01T23:59:59.000Z

147

Intern experience at Brown & Root, Incorporated: an internship report  

E-Print Network (OSTI)

This internship report describes the major activities and accomplishments during the author's one-year intership at Brown & Root in Houston, Texas. The report discusses his engineering assignments, and the necessary functions of a project engineer. The author's assignments covered essentially the technical nature and procedures of his work in several areas of fixed offshore platform design. The author presents and discusses the managerial functions of a project engineer whom he observed working in an offshore engineering company. At the end of this report, the author's accomplishments are summarized, and recommendations concerning the internship are presented.

Roengnarong Ratanaprichavej, 1949-

1979-05-01T23:59:59.000Z

148

Engineering internship at Brown & Root, Incorporated: a report  

E-Print Network (OSTI)

An engineering intership at Brown & Root, Incorporated was completed over a period slightly in excess of one year. During his internship, the industrial engineer was assigned tasks related to the organization of a manufacturing department and the pursuit and completion of its projects. Many of his contributions were system-related and involved sales, engineering proposals, engineering economy, contract negotiations, employee merit evaluation, design, and general groundwork. He was also assigned to two engineering projects concerning the design and construction of manufacturing facilities. One of the project assignments required international travel to England and Nigeria, and almost all of the assignments involved some aspect of engineering management.

Gannaway, Randall Joe, 1952-

1977-12-01T23:59:59.000Z

149

The Influence of Alloy Chemistry and Powder Production Methods ...  

Science Conference Proceedings (OSTI)

Advanced nickel-base superalloys for use in gas turbine engines are produced .... Powder was separated from the exiting gas flow via a cyclone. Once cooled, the powder was removed from the system. (exposing .... The full data are given in ...

150

Low Cost Titanium Powder Development for Additive Manufacturing ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2013 TMS Annual Meeting & Exhibition. Symposium , Cost Affordable Titanium IV. Presentation Title, Low Cost Titanium Powder...

151

Development of a Simplified Powder Processing Method for ...  

Science Conference Proceedings (OSTI)

... dispersion strengthened ferritic stainless steel microstructure. Precursor ferritic stainless steel powders were oxidized in situ using a newly developed gas...

152

Powder Removal from Complex Structures Produced Using Electron ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2011. Symposium, Additive Manufacturing of Metals. Presentation Title, Powder Removal from...

153

and Submicron Oxide Powders for Optoelectronic and Renewable ...  

Science Conference Proceedings (OSTI)

Among various materials processes, Umicore develops technologies and manufactures various oxide powders for optoelectronic and renewable energy...

154

Powder-based Processes and Products for Advanced Applications  

Science Conference Proceedings (OSTI)

James W Sears, South Dakota School of Mines & Technology. Scope, Numerous powder materials technologies have been developed for metals, ceramics,...

155

Anaerobic Co-digestion of Brown Water and Food Waste for Energy Recovery  

E-Print Network (OSTI)

LIM J.W. Anaerobic Co-digestion of Brown Water and Food Waste for Energy Recovery Jun Wei LIM, Singapore 639798 (E-mail: jwlim3@e.ntu.edu.sg) Abstract The anaerobic digestion of brown water (BW), food in a decentralized reactor via anaerobic digestion. The bio-methane potential of these substrates at different feed

Paris-Sud XI, Université de

156

Preparation of oxygen-containing organic products from bed-oxidized brown coal by ozonation  

Science Conference Proceedings (OSTI)

The possibility of modifying the functional composition of humic acids by gas-phase ozonation of bed-oxidized brown coal was examined. About 90% of the organic matter of brown coal was converted to low-molecular weight soluble oxygen-containing products by stepwise liquid-phase ozonation (in chloroform and acetic acid).

Semenova, S.A.; Patrakov, Y.F.; Batina, M.V. [National Academy of Science Belarus, Minsk (Byelarus)

2009-01-15T23:59:59.000Z

157

Dr. Benjamin L. Brown | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Benjamin L. Brown Benjamin L. Brown Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: sc.science@science.doe.gov U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: sc.science@science.doe.gov Staff Dr. Benjamin L. Brown Print Text Size: A A A RSS Feeds FeedbackShare Page Dr. Benjamin L. Brown Dr. Benjamin L. Brown Senior Science and Technology Advisor Office of the Deputy Director for Science Programs

158

Fabricating solid carbon porous electrodes from powders  

DOE Patents (OSTI)

Fabrication of conductive solid porous carbon electrodes for use in batteries, double layer capacitors, fuel cells, capacitive dionization, and waste treatment. Electrodes fabricated from low surface area (<50 m.sup.2 /gm) graphite and cokes exhibit excellent reversible lithium intercalation characteristics, making them ideal for use as anodes in high voltage lithium insertion (lithium-ion) batteries. Electrodes having a higher surface area, fabricated from powdered carbon blacks, such as carbon aerogel powder, carbon aerogel microspheres, activated carbons, etc. yield high conductivity carbon compositives with excellent double layer capacity, and can be used in double layer capacitors, or for capacitive deionization and/or waste treatment of liquid streams. By adding metallic catalysts to be high surface area carbons, fuel cell electrodes can be produced.

Kaschmitter, James L. (Pleasanton, CA); Tran, Tri D. (Livermore, CA); Feikert, John H. (Livermore, CA); Mayer, Steven T. (San Leandro, CA)

1997-01-01T23:59:59.000Z

159

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

A free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7 [times] 10[sup [minus]3] to about 7 [times] 10[sup [minus]2] microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub. 9 figs.

Salyer, I.O.

1992-04-21T23:59:59.000Z

160

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7[times]10[sup [minus]3] to about 7[times]10[sup [minus]2] microns and the p.c.m. must be added to the silica in an amount of 80 wt. % or less p.c.m. per combined weight of silica and p.c.m. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a p.c.m. material. The silica-p.c.m. mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, I.O.

1993-05-18T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1993-01-01T23:59:59.000Z

162

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1992-01-01T23:59:59.000Z

163

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (p.c.m.) is disclosed. The silica particles have a critical size of about 7.times.10.sup.-3 to about 7.times.10.sup.-2 microns and the pcm must be added to the silica in an amount of 80 wt. % or less pcm per combined weight of silica and pcm. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garmets, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a pcm material. The silica-pcm mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1993-01-01T23:59:59.000Z

164

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a PCM material. The silica-PCM mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub.

Salyer, Ival O. (Dayton, OH)

1994-01-01T23:59:59.000Z

165

Dry powder mixes comprising phase change materials  

DOE Patents (OSTI)

Free flowing, conformable powder-like mix of silica particles and a phase change material (PCM) is provided. The silica particles have a critical size of about 0.005 to about 0.025 microns and the PCM must be added to the silica in an amount of 75% or less PCM per combined weight of silica and PCM. The powder-like mix can be used in tableware items, medical wraps, tree wraps, garments, quilts and blankets, and in cementitious compositions of the type in which it is beneficial to use a PCM material. The silica-PCM mix can also be admixed with soil to provide a soil warming effect and placed about a tree, flower, or shrub. 2 figures.

Salyer, I.O.

1994-02-01T23:59:59.000Z

166

Powder River Energy Corporation | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search Name Powder River Energy Corporation Place Sundance, Wyoming Website precorp.coop/ Utility Id 19156 Utility Location Yes Ownership C NERC Location WECC Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] SGIC[2] Energy Information Administration Form 826[3] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Powder River Energy Corporation Smart Grid Project was awarded $2,554,807 Recovery Act Funding with a total project value of $5,109,614. Utility Rate Schedules Grid-background.png General Service (GS)-Single Phase Commercial General Service (GS)-Three phase Commercial General Service-Coal Bed Methane (GS-CBM)-Single Phase Commercial

167

Fabricating solid carbon porous electrodes from powders  

DOE Patents (OSTI)

Fabrication is described for conductive solid porous carbon electrodes for use in batteries, double layer capacitors, fuel cells, capacitive deionization, and waste treatment. Electrodes fabricated from low surface area (<50 m{sup 2}/gm) graphite and cokes exhibit excellent reversible lithium intercalation characteristics, making them ideal for use as anodes in high voltage lithium insertion (lithium-ion) batteries. Electrodes having a higher surface area, fabricated from powdered carbon blacks, such as carbon aerogel powder, carbon aerogel microspheres, activated carbons, etc. yield high conductivity carbon composites with excellent double layer capacity, and can be used in double layer capacitors, or for capacitive deionization and/or waste treatment of liquid streams. By adding metallic catalysts to high surface area carbons, fuel cell electrodes can be produced. 1 fig.

Kaschmitter, J.L.; Tran, T.D.; Feikert, J.H.; Mayer, S.T.

1997-06-10T23:59:59.000Z

168

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

Science Conference Proceedings (OSTI)

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

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

2009-07-01T23:59:59.000Z

169

Sintering of sponge and hydride-dehydride titanium powders  

Science Conference Proceedings (OSTI)

The sintering behavior of compacts produced from sponge and hydride-dehydride (HDH) Ti powders was examined. Compacts were vacuum sintered at 1200 or 1300 deg C for 30, 60, 120, 240, 480 or 960 minutes. The porosity decreased with sintering time and/or temperature in compacts produced from the HDH powders. Compacts produced from these powders could be sintered to essentially full density. However, the sintering condition did not influence the amount of porosity present in compacts produced from the sponge powders. These samples could only be sintered to a density of 97% theoretical. The sintering behavior was attributed to the chemical impurities in the powders.

Alman, David E.; Gerdemann, Stephen J.

2004-04-01T23:59:59.000Z

170

MEMORANDUM FROM: THOMAS E. BROWN, DIRECTOR OFFICE OF CONTRACT MANAGEMENT  

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

,2008 ,2008 MEMORANDUM FROM: THOMAS E. BROWN, DIRECTOR OFFICE OF CONTRACT MANAGEMENT OFFICE OF PROCUREMENT AND ASSISTANCE MANAGEMENT SUBJECT: Contract Change Order Administration of Department of Energy Prime Contracts The purpose of this memorandum is to highlight the need for good contract administration of Department of Energy (DOE) contracts (non management and operating contracts) including those covered by DOE Order 413.3A, Program and Project Management for the Acquisition of Capital Assets. One of the focus areas of the DOE's efforts to improve contract and project management is the recopition that effectrve contract change order administration is critical to ensuring that contract and project requirements are met. Fundamentally, the award of an appropriate contract type that best

171

Pascal Baron, CEA - France Christine Brown, BNFL - U.K.  

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

- November 2004 - November 2004 Final Report - November 2004 An Evaluation of the Proliferation Resistant Characteristics of Light Water Reactor Fuel with the Potential for Recycle in the United States Pascal Baron, CEA - France Christine Brown, BNFL - U.K. Bruce Kaiser, WGI - U.S.A. Bruce Matthews, LANL - U.S.A. Takehiko Mukaiyama, JAIF- Japan Ronald Omberg, PNNL, U.S.A. Lee Peddicord, Texas A&M - U.S.A., Massimo Salvatores, CEA - France, Alan Waltar, PNNL - U.S.A., Chair Compiled by Alan E. Waltar and Ronald P. Omberg Pacific Northwest National Laboratory Final Report - November 2004 Final Report - November 2004 1 Table of Contents Executive Summary 2 I. Introduction 5 II. Background 5 III. Historical Perspective 7

172

Project title: EMF Remodel Requested By: Scotty Brown  

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

EMF Remodel EMF Remodel Requested By: Scotty Brown Date Submitted: 811112011 Dcscl"iption of the Pl'Ojcct: Purpose and Need Mail Code: N5540 Phone: 916-353-4539 Date Required: 8116/2011 The Elverta Maintenance Facility (EMF), as currently designed and built, has run out of adequate space to accommodate Western's parking needs for maintenance vehicles and overall workshop space for materials and required equipment. An expanded, renovated and remodeled facility, with a larger parking garage and workshop area(s), will enable Western to maintain its vehicle fleet to the required standards and provide additional workshop space to accommodate the equipment, tools, and materials necessary to construct and maintain Western's electrical transmission system and related facilities.

173

Brown County Rural Elec Assn | Open Energy Information  

Open Energy Info (EERE)

Rural Elec Assn Rural Elec Assn Jump to: navigation, search Name Brown County Rural Elec Assn Place Minnesota Utility Id 2316 Utility Location Yes Ownership C NERC Location MRO NERC MRO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Single Phase Service-Controlled electric Heat Commercial General Single Phase Service Commercial General Single Phase Service(Load Management) Commercial General Three Phase Service Commercial General Three Phase Service(Load Management) Commercial General Three Phase Service- Controlled Electric Heat Commercial

174

Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter. [Patent application  

DOE Patents (OSTI)

A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25 to 3 grams of an iron or nickel salt in water per gram of ash and drying a resulting slurry; (b) crushing and sizing a resulting solid; and (c) heating the thus-sized solid powder in hydrogen.

Hwai-der Liu, K.; Hamrin, C.E. Jr.

1981-03-26T23:59:59.000Z

175

Integrated model shows that atmospheric brown clouds and greenhouse gases have reduced rice harvests in India  

SciTech Connect

Previous studies have found that atmospheric brown clouds partially offset the warming effects of greenhouse gases. This finding suggests a tradeoff between the impacts of reducing emissions of aerosols and greenhouse gases. Results from a statistical model of historical rice harvests in India, coupled with regional climate scenarios from a parallel climate model, indicate that joint reductions in brown clouds and greenhouse gases would in fact have complementary, positive impacts on harvests. The results also imply that adverse climate change due to brown clouds and greenhouse gases contributed to the slowdown in harvest growth that occurred during the past two decades.

Auffhammer, M. [Univ. of California, Berkeley, CA (United States). Dept. of Agricultural and Resource Economics; Ramanathan, V. [Scripps Institution of Oceanography, San Diego, CA (United States); Vincent, J.R. [Univ. of California, San Diego, CA (United States). Graduate School of International Relations and Pacific Studies

2007-12-26T23:59:59.000Z

176

MARVELS-1b: A Short-Period, Brown Dwarf Desert Candidate from the SDSS-III MARVELS Planet Search  

E-Print Network (OSTI)

We present a new short-period brown dwarf candidate around the star TYC 1240-00945-1. This candidate was discovered in the first year of the Multi-object APO Radial Velocity Exoplanets Large-area Survey (MARVELS), which is part of the third phase of the Sloan Digital Sky Survey (SDSS-III), and we designate the brown dwarf as MARVELS-1b. MARVELS uses the technique of dispersed fixed-delay interferometery to simultaneously obtain radial velocity measurements for 60 objects per field using a single, custom-built instrument that is fiber fed from the SDSS 2.5-m telescope. From our 20 radial velocity measurements spread over a ~370 d time baseline, we derive a Keplerian orbital fit with semi-amplitude K=2.533+/-0.025 km/s, period P=5.8953+/-0.0004 d, and eccentricity consistent with circular. Independent follow-up radial velocity data confirm the orbit. Adopting a mass of 1.37+/-0.11 M_Sun for the slightly evolved F9 host star, we infer that the companion has a minimum mass of 28.0+/-1.5 M_Jup, a semimajor axis 0....

Lee, Brian L; Fleming, Scott W; Stassun, Keivan G; Gaudi, B Scott; Barnes, Rory; Mahadevan, Suvrath; Eastman, Jason D; Wright, Jason; Siverd, Robert J; Gary, Bruce; Ghezzi, Luan; Laws, Chris; Wisniewski, John P; de Mello, G F Porto; Ogando, Ricardo L C; Maia, Marcio A G; da Costa, Luiz Nicolaci; Sivarani, Thirupathi; Pepper, Joshua; Nguyen, Duy Cuong; Hebb, Leslie; De Lee, Nathan; Wang, Ji; Wan, Xiaoke; Zhao, Bo; Chang, Liang; Groot, John; Varosi, Frank; Hearty, Fred; Hanna, Kevin; van Eyken, J C; Kane, Stephen R; Agol, Eric; Bizyaev, Dmitry; Bochanski, John J; Brewington, Howard; Chen, Zhiping; Costello, Erin; Dou, Liming; Eisenstein, Daniel J; Fletcher, Adam; Ford, Eric B; Guo, Pengcheng; Holtzman, Jon A; Jiang, Peng; Leger, R French; Liu, Jian; Long, Daniel C; Malanushenko, Elena; Malanushenko, Viktor; Malik, Mohit; Oravetz, Daniel; Pan, Kaike; Rohan, Pais; Schneider, Donald P; Shelden, Alaina; Snedden, Stephanie A; Simmons, Audrey; Weaver, B A; Weinberg, David H; Xie, Ji-Wei

2010-01-01T23:59:59.000Z

177

Large Bore Powder Gun Qualification (U)  

Science Conference Proceedings (OSTI)

A Large Bore Powder Gun (LBPG) is being designed to enable experimentalists to characterize material behavior outside the capabilities of the NNSS JASPER and LANL TA-55 PF-4 guns. The combination of these three guns will create a capability to conduct impact experiments over a wide range of pressures and shock profiles. The Large Bore Powder Gun will be fielded at the Nevada National Security Site (NNSS) U1a Complex. The Complex is nearly 1000 ft below ground with dedicated drifts for testing, instrumentation, and post-shot entombment. To ensure the reliability, safety, and performance of the LBPG, a qualification plan has been established and documented here. Requirements for the LBPG have been established and documented in WE-14-TR-0065 U A, Large Bore Powder Gun Customer Requirements. The document includes the requirements for the physics experiments, the gun and confinement systems, and operations at NNSS. A detailed description of the requirements is established in that document and is referred to and quoted throughout this document. Two Gun and Confinement Systems will be fielded. The Prototype Gun will be used primarily to characterize the gun and confinement performance and be the primary platform for qualification actions. This gun will also be used to investigate and qualify target and diagnostic modifications through the life of the program (U1a.104 Drift). An identical gun, the Physics Gun, will be fielded for confirmatory and Pu experiments (U1a.102D Drift). Both guns will be qualified for operation. The Gun and Confinement System design will be qualified through analysis, inspection, and testing using the Prototype Gun for the majority of process. The Physics Gun will be qualified through inspection and a limited number of qualification tests to ensure performance and behavior equivalent to the Prototype gun. Figure 1.1 shows the partial configuration of U1a and the locations of the Prototype and Physics Gun/Confinement Systems.

Rabern, Donald A. [Los Alamos National Laboratory; Valdiviez, Robert [Los Alamos National Laboratory

2012-04-02T23:59:59.000Z

178

Laser production of articles from powders  

DOE Patents (OSTI)

Method and apparatus for forming articles from materials in particulate form in which the materials are melted by a laser beam and deposited at points along a tool path to form an article of the desired shape and dimensions. Preferably the tool path and other parameters of the deposition process are established using computer-aided design and manufacturing techniques. A controller comprised of a digital computer directs movement of a deposition zone along the tool path and provides control signals to adjust apparatus functions, such as the speed at which a deposition head which delivers the laser beam and powder to the deposition zone moves along the tool path. 20 figs.

Lewis, G.K.; Milewski, J.O.; Cremers, D.A.; Nemec, R.B.; Barbe, M.R.

1998-11-17T23:59:59.000Z

179

Laser production of articles from powders  

DOE Patents (OSTI)

Method and apparatus for forming articles from materials in particulate form in which the materials are melted by a laser beam and deposited at points along a tool path to form an article of the desired shape and dimensions. Preferably the tool path and other parameters of the deposition process are established using computer-aided design and manufacturing techniques. A controller comprised of a digital computer directs movement of a deposition zone along the tool path and provides control signals to adjust apparatus functions, such as the speed at which a deposition head which delivers the laser beam and powder to the deposition zone moves along the tool path.

Lewis, Gary K. (Los Alamos, NM); Milewski, John O. (Santa Fe, NM); Cremers, David A. (Los Alamos, NM); Nemec, Ronald B. (White Rock, NM); Barbe, Michael R. (White Rock, NM)

1998-01-01T23:59:59.000Z

180

PAUL SHORT --MENS BROWN file:///Users/bkatten/Desktop/R092812AF.html[9/28/12 4:04:11 PM  

E-Print Network (OSTI)

Sarah J. Girotti '93 ++ Bernard Gitlin '62 '89P '92P ++ John H. Glanville '77 ++ William A. Glaser, Jr Richard F. Boyer '68 ++ Richard R. Bradley '61 Charles J. Brand '74 `77G++ James A. Branegan, Jr. '35 ++ D A. Broscious '55 ++ David B. Brown `12P Harry K. Brown, Jr. `66 Judith S. Brown `12P Linda K. Brown

Royer, Dana

Note: This page contains sample records for the topic "brown powder obtained" 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
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181

The investigation of die-pressing and sintering behavior of ITP CP-Ti and Ti-6Al-4V powders  

SciTech Connect

This paper investigated the die-pressing and sintering behavior of the low-cost CP-Ti and Ti-6Al- 4V powders made by the Armstrong Process . The Armstrong powders have an irregular coral like, dendritic morphology, with a dendrite size of approximately 2-5 m. As-received as well as milled powders were uniaxially pressed at designated pressures up to 690 MPa to form disk samples with different aspect ratios. In the studied pressure range, an empirical powder compaction equation was applied to linearize the green density pressure relationship, and powder compaction parameters were obtained. The Armstrong Ti-64 powder exhibited a significantly higher sinterability than the CP-Ti powder. This was explained to be due to the higher diffusivity of V at the sintering temperature. The Ti-64 samples with a green density of 71.0% increased to 99.6% after sintering at 1300oC for 1 hour. An ex-situ technique was used to track the powder morphology change before and after sintering.

Chen, Wei [ORNL; Yamamoto, Yukinori [ORNL; Peter, William H [ORNL; Clark, Michael B [ORNL; Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Muth, Thomas R [ORNL; Blue, Craig A [ORNL; Williams, James C [Ohio State University; Fuller, Brian [International Titanium Powder; Akhtar, Kamal [International Titanium Powder

2012-01-01T23:59:59.000Z

182

Iowa Powder Atomization Technologies, Inc. | Department of Energy  

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

Iowa Powder Iowa Powder Atomization Technologies, Inc. America's Next Top Energy Innovator Challenge 6067 likes Iowa Powder Atomization Technologies, Inc. Ames Laboratory Iowa Powder Atomization Technologies, Inc. (IPAT) aims to become a leading domestic titanium powder producer allowing for a paradigm shift in the cost of titanium powders for metal injection molding (MIM) feedstock. Decreasing this cost will create vast opportunities for aerospace, military, biomedical, and consumer applications. Titanium and its fabrication by MIM can become one of the United States' most advanced processing technologies and help jump-start many corresponding manufacturing sectors, spurring job creation and economic growth throughout the United States. Titanium is viewed as one of the most strategic metals of our future. Its

183

Printed Circuit Board Metal Powder Filters for Low Electron Temperatures  

E-Print Network (OSTI)

We report the characterisation of printed circuit boards (PCB) metal powder filters and their influence on the effective electron temperature which is as low as 22 mK for a quantum dot in a silicon MOSFET structure in a dilution refrigerator. We investigate the attenuation behaviour (10 MHz- 20 GHz) of filter made of four metal powders with a grain size below 50 um. The room-temperature attenuation of a stainless steel powder filter is more than 80 dB at frequencies above 1.5 GHz. In all metal powder filters the attenuation increases with temperature. Compared to classical powder filters, the design presented here is much less laborious to fabricate and specifically the copper powder PCB-filters deliver an equal or even better performance than their classical counterparts.

Filipp Mueller; Raymond N. Schouten; Matthias Brauns; Tian Gang; Wee Han Lim; Nai Shyan Lai; Andrew S. Dzurak; Wilfred G. van der Wiel; Floris A. Zwanenburg

2013-04-11T23:59:59.000Z

184

Reclaiming residual space from elevated transport infrastructure : time, space, and activity under the Chicago Brown Line  

E-Print Network (OSTI)

This thesis studies the non-transport functions of the residual space generated by elevated transport infrastructure and its relationship with abutting neighborhoods The space under the Chicago Brown Line, among all other ...

Su, Jing, S.M. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

185

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY://opr.ca.gov. The website provides a link to general CEQA information. The best contact for CEQA is the local lead agency

186

NanoComposite Stainless Steel Powder Technologies  

SciTech Connect

Oak Ridge National Laboratory has been investigating a new class of Fe-based amorphous material stemming from a DARPA, Defense Advanced Research Projects Agency initiative in structural amorphous metals. Further engineering of the original SAM materials such as chemistry modifications and manufacturing processes, has led to the development of a class of Fe based amorphous materials that upon processing, devitrify into a nearly homogeneous distribution of nano sized complex metal carbides and borides. The powder material is produced through the gas atomization process and subsequently utilized by several methods; laser fusing as a coating to existing components or bulk consolidated into new components through various powder metallurgy techniques (vacuum hot pressing, Dynaforge, and hot isostatic pressing). The unique fine scale distribution of microstructural features yields a material with high hardness and wear resistance compared to material produced through conventional processing techniques such as casting while maintaining adequate fracture toughness. Several compositions have been examined including those specifically designed for high hardness and wear resistance and a composition specifically tailored to devitrify into an austenitic matrix (similar to a stainless steel) which poses improved corrosion behavior.

DeHoff, R.; Glasgow, C. (MesoCoat, Inc.)

2012-07-25T23:59:59.000Z

187

Investigation of Browns Ferry 2 Reactor, Cycle 12 Corrosion Failures: Volume 1: Poolside Examination Results  

Science Conference Proceedings (OSTI)

BWR fuel rods of the GE13 (9x9) design developed leaks during Cycle 12 of the Browns Ferry 2 reactor. This report presents the results of an examination of this fuel and similar, non-leaking assemblies in the storage pool at the Browns Ferry site. The objective was to define the extent of leakage and the conditions associated with the leaking rods.

2004-12-22T23:59:59.000Z

188

Hazards of black blasting powder in underground coal mining  

SciTech Connect

To help reduce explosion hazards in coal mines using dangerous black blasting powder, this circular outlines precautions designed to increase the safety factor in using this explosive.

Harrington, D.; Warncke, R.G.

1949-01-01T23:59:59.000Z

189

Modeling Metal Powder Compaction Using Combined Finite and ...  

Science Conference Proceedings (OSTI)

Presentation Title, Modeling Metal Powder Compaction Using Combined Finite ... Optimization of Thermal Cycle for Rails with Respect to the Wear Resistance.

190

Injection Molding of Tungsten Powder Treated by Jet Mill  

Science Conference Proceedings (OSTI)

Tungsten powder was firstly treated by jet mill, resulting in the improvement of ... and Welding Conditions of Monopile and Transition for Offshore Wind Plant.

191

REPORT: Direct Laser Powder Deposition State of the Art  

Science Conference Proceedings (OSTI)

Dec 11, 2007 ... This report describes the Direct Laser Powder Deposition (DLPD) process known by various names, including Directed Light Fabrication...

192

Vacuum Attachment for Collection of Lithium Powder ---- Inventor...  

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

Vacuum Attachment for Collection of Lithium Powder ---- Inventor(s) Hans Schneider and Stephan Jurczynski The Vacuum Attachment is part of an integrated system designed to collect...

193

Spark Plasma Sintering of Iron and Titanium Powders by ...  

Science Conference Proceedings (OSTI)

Mixtures of titanium and iron powders were activated in kerosene by high-voltage electrical discharges with different electrical discharge numbers.

194

Properties of Conventionally Alloyed and Powder Alloyed Nano ...  

Science Conference Proceedings (OSTI)

Presentation Title, Properties of Conventionally Alloyed and Powder Alloyed Nano-Crystalline Titanium Consolidated Via Spark Plasma Sintering. Author(s)...

195

Enhanced Control of Powder Yields from Close-Coupled Gas ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Advanced designs for discrete-jet close-coupled (DJ-CC) gas atomization nozzles and melt feed tubes have been developed to enable powder

196

Gas Atomization of Amorphous Aluminum Powder: Part II. Experimental Investigation  

E-Print Network (OSTI)

indicate that cooling rate increases with the increasingthat the cooling rate increases with decreasing powder size.part I, [1] the cooling rate increases with increasing melt

Zheng, Baolong; Lin, Yaojun; Zhou, Yizhang; Lavernia, Enrique J.

2009-01-01T23:59:59.000Z

197

Powder River Basin (WY, MT) Coal and Coalbed Methane: Evaluating...  

Open Energy Info (EERE)

Powder River Basin (WY, MT) Coal and Coalbed Methane: Evaluating and Revising 100 Years of Studies The USGS published a USGS Professional Paper in 2010 entitled

198

Powder River Basin (WY, MT) Coal and Coalbed Methane: Evaluating...  

Open Energy Info (EERE)

Search Share this page on Facebook icon Twitter icon Powder River Basin (WY, MT) Coal and Coalbed Methane: Evaluating and Revising 100 Years of Studies Dataset Summary...

199

Powder Metallurgy: A Route to Nanocomposites - Programmaster.org  

Science Conference Proceedings (OSTI)

The formation of coating during mechanical alloying was the results of repetitive cold welding and fracturing of powder particles with each other and with hard...

200

Powder Metallurgy Products for Advanced Gas Turbine Applications  

Science Conference Proceedings (OSTI)

ties for gas turbine a.pplications. At Avco Lycoming, powder metallurgy activity has focused upon a series of high strength nickel base superalloys. These alloys ...

Note: This page contains sample records for the topic "brown powder obtained" 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

Nano-structured Powders Prepared by Spray Drying and Heat ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Eeconomical method for making nano-sized powders such as silicon or colbalt oxides and electrochemical properties of nano-sized oxide...

202

Effect of Powder Compact Holding Time on the Microstructure and ...  

Science Conference Proceedings (OSTI)

The microstructure and mechanical properties of Ti-6Al-4V alloy and the effects of powder compact holding time on them were investigated. The results showed...

203

Spark Plasma Sintering of Annular Zirconium Carbide Powder ...  

Science Conference Proceedings (OSTI)

Presentation Title, Spark Plasma Sintering of Annular Zirconium Carbide Powder Pellets:Processing and Simulation. Author(s), Xialu Wei, Wei Li, Eugene A.

204

Properties of IN-100 Processed by Powder Metallurgy  

Science Conference Proceedings (OSTI)

PROPERTIES OF IN-100 PROCESSED. BY POWDER METALLURGY. L.N. Moskowitz,. R.M. Pelloux and N.J. Grant. Department of Metallurgy and Materials.

205

The Microstructure and Mechanical Properties of EP741NP Powder ...  

Science Conference Proceedings (OSTI)

properties of powder metallurgy superalloys have been studied as part of an on- going effort ... metallurgy and mechanical property capabilities of EP741NP and.

206

Powder Processing and Mechanical Properties - Programmaster.org  

Science Conference Proceedings (OSTI)

Oct 18, 2010 ... The ball milling of powders has become a powerful method to synthesize metastable structures. Mechanical milling - the ball milling of single...

207

In Situ Neutron Powder Diffraction on Hydrogen Storage Materials  

Science Conference Proceedings (OSTI)

Abstract Scope, In order to pursue hydrogen storage research on powder samples ... A Case Study in Future Energy Challenges: Towards In Situ Hard X-

208

POWDER DIFFRACTION BEAMLINE FOR IN SITU STUDIES OF STRUCTURAL...  

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

tunable x-ray energy from 5 to 25 keV. * Powder crystallography, including solving and refining crystal structures, quantitative analysis of phase fraction and sizestrain...

209

Additive Manufacturing and Novel Consolidation of Powder Materials  

Science Conference Proceedings (OSTI)

Mar 6, 2013 ... Novel Synthesis and Consolidation of Powder Materials : Additive ... HIP and CIP -Sinter techniques do not need lubricants that can react with...

210

Measuring Thermal Conductivity of Powder Insulation at Cryogenic Temperatures.  

E-Print Network (OSTI)

?? A device to measure bulk effective thermal conductivity of powder insulation at cryogenic temperatures has been designed and tested. The design consists of two (more)

Barrios, Matthew Nicklas

2006-01-01T23:59:59.000Z

211

Influence of Powder Particle Size Distribution and Pressure on the ...  

Science Conference Proceedings (OSTI)

during HIP were determined as a function of applied pressure, temperature and initial powder particle size distribution for the nickel base superalloy. RENE 95.

212

Process for synthesizing compounds from elemental powders and product  

DOE Patents (OSTI)

A process for synthesizing intermetallic compounds from elemental powders. The elemental powders are initially combined in a ratio which approximates the stoichiometric composition of the intermetallic compound. The mixed powders are then formed into a compact which is heat treated at a controlled rate of heating such that an exothermic reaction between the elements is initiated. The heat treatment may be performed under controlled conditions ranging from a vacuum (pressureless sintering) to compression (hot pressing) to produce a desired densification of the intermetallic compound. In a preferred form of the invention, elemental powders of Fe and Al are combined to form aluminide compounds of Fe.sub.3 Al and FeAl.

Rabin, Barry H. (Idaho Falls, ID); Wright, Richard N. (Idaho Falls, ID)

1993-01-01T23:59:59.000Z

213

Treatment of biomass to obtain ethanol  

DOE Patents (OSTI)

Ethanol was produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

Dunson, Jr., James B. (Newark, DE); Elander, Richard T. (Evergreen, CO); Tucker, III, Melvin P. (Lakewood, CO); Hennessey, Susan Marie (Avondale, PA)

2011-08-16T23:59:59.000Z

214

Apparatus for producing nanoscale ceramic powders  

DOE Patents (OSTI)

An apparatus provides high temperature and short residence time conditions for the production of nanoscale ceramic powders. The apparatus includes a confinement structure having a multiple inclined surfaces for confining flame located between the surfaces so as to define a flame zone. A burner system employs one or more burners to provide flame to the flame zone. Each burner is located in the flame zone in close proximity to at least one of the inclined surfaces. A delivery system disposed adjacent the flame zone delivers an aerosol, comprising an organic or carbonaceous carrier material and a ceramic precursor, to the flame zone to expose the aerosol to a temperature sufficient to induce combustion of the carrier material and vaporization and nucleation, or diffusion and oxidation, of the ceramic precursor to form pure, crystalline, narrow size distribution, nanophase ceramic particles.

Helble, Joseph J. (Andover, MA); Moniz, Gary A. (Windham, NH); Morse, Theodore F. (Little Compton, RI)

1995-09-05T23:59:59.000Z

215

Apparatus for producing nanoscale ceramic powders  

SciTech Connect

An apparatus provides high temperature and short residence time conditions for the production of nanoscale ceramic powders. The apparatus includes a confinement structure having a multiple inclined surfaces for confining flame located between the surfaces so as to define a flame zone. A burner system employs one or more burners to provide flame to the flame zone. Each burner is located in the flame zone in close proximity to at least one of the inclined surfaces. A delivery system disposed adjacent the flame zone delivers an aerosol, comprising an organic or carbonaceous carrier material and a ceramic precursor, to the flame zone to expose the aerosol to a temperature sufficient to induce combustion of the carrier material and vaporization and nucleation, or diffusion and oxidation, of the ceramic precursor to form pure, crystalline, narrow size distribution, nanophase ceramic particles. 5 figs.

Helble, J.J.; Moniz, G.A.; Morse, T.F.

1995-09-05T23:59:59.000Z

216

Apparatus for producing nanoscale ceramic powders  

DOE Patents (OSTI)

An apparatus provides high temperature and short residence time conditions for the production of nanoscale ceramic powders. The apparatus includes a confinement structure having a multiple inclined surfaces for confining flame located between the surfaces so as to define a flame zone. A burner system employs one or more burners to provide flame to the flame zone. Each burner is located in the flame zone in close proximity to at least one of the inclined surfaces. A delivery system disposed adjacent the flame zone delivers an aerosol, comprising an organic or carbonaceous carrier material and a ceramic precursor, to the flame zone to expose the aerosol to a temperature sufficient to induce combustion of the carrier material and vaporization and nucleation, or diffusion and oxidation, of the ceramic precursor to form pure, crystalline, narrow size distribution, nanophase ceramic particles.

Helble, Joseph J. (Andover, MA); Moniz, Gary A. (Windham, NH); Morse, Theodore F. (Little Compton, RI)

1997-02-04T23:59:59.000Z

217

Apparatus for producing nanoscale ceramic powders  

SciTech Connect

An apparatus provides high temperature and short residence time conditions for the production of nanoscale ceramic powders. The apparatus includes a confinement structure having a multiple inclined surfaces for confining flame located between the surfaces so as to define a flame zone. A burner system employs one or more burners to provide flame to the flame zone. Each burner is located in the flame zone in close proximity to at least one of the inclined surfaces. A delivery system disposed adjacent the flame zone delivers an aerosol, comprising an organic or carbonaceous carrier material and a ceramic precursor, to the flame zone to expose the aerosol to a temperature sufficient to induce combustion of the carrier material and vaporization and nucleation, or diffusion and oxidation, of the ceramic precursor to form pure, crystalline, narrow size distribution, nanophase ceramic particles. 5 figs.

Helble, J.J.; Moniz, G.A.; Morse, T.F.

1997-02-04T23:59:59.000Z

218

Synchrotron Mossbauer Spectroscopy of powder samples  

SciTech Connect

Synchrotron Mossbauer Spectroscopy, SMS, is an emerging technique that allows fast and accurate determination of hyperfine field parameters similar to conventional Mossbauer spectroscopy with radioactive sources. This new technique, however, is qualitatively different from Mossbauer spectroscopy in terms of equipment, methodology, and analysis to warrant a new name. In this paper, the authors report on isomer shift and quadrupole splitting measurements of Mohr`s salt, Fe(NH{sub 4}){sub 2}(SO{sub 4}){sub 2}{center_dot}6H{sub 2}O for demonstration purposes. Theoretical calculations were performed and compared to experiments both in energy and time domain to demonstrate the influence of thickness distribution and preferential alignment of powder samples. Such measurements may prove to be useful when the data collection times are reduced to few seconds in the third generation, undulator based synchrotron radiation sources.

Alp, E.E.; Sturhahn, W.; Toellner, T.

1994-08-01T23:59:59.000Z

219

Actual Scale MOX Powder Mixing Test for MOX Fuel Fabrication Plant in Japan  

Science Conference Proceedings (OSTI)

Japan Nuclear Fuel Ltd. (hereafter, JNFL) promotes a program of constructing a MOX fuel fabrication plant (hereafter, J-MOX) to fabricate MOX fuels to be loaded in domestic light water reactors. Since Japanese fiscal year (hereafter, JFY) 1999, JNFL, to establish the technology for a smooth start-up and the stable operation of J-MOX, has executed an evaluation test for technology to be adopted at J-MOX. JNFL, based on a consideration that J-MOX fuel fabrication comes commercial scale production, decided an introduction of MIMAS technology into J-MOX main process, from powder mixing through pellet sintering, well recognized as mostly important to achieve good quality product of MOX fuel, since it achieves good results in both fuel production and actual reactor irradiation in Europe, but there is one difference that JNFL is going to use Japanese typical plutonium and uranium mixed oxide powder converted with the micro-wave heating direct de-nitration technology (hereafter, MH-MOX) but normal PuO{sub 2} of European MOX fuel fabricators. Therefore, in order to evaluate the suitability of the MH-MOX powder for the MIMAS process, JNFL manufactured small scale test equipment, and implemented a powder mixing evaluation test up until JFY 2003. As a result, the suitability of the MH-MOX powder for the MIMAS process was positively evaluated and confirmed It was followed by a five-years test named an 'actual test' from JFY 2003 to JFY 2007, which aims at demonstrating good operation and maintenance of process equipment as well as obtaining good quality of MOX fuel pellets. (authors)

Osaka, Shuichi; Kurita, Ichiro; Deguchi, Morimoto [Japan Nuclear Fuel Ltd., 4-108, Aza okitsuke, oaza obuchi rokkasyo-mura, kamikita-gun, Aomori 039-3212 (Japan); Ito, Masanori [Japan Atomic Energy Agency, 4-33 Muramatu, Tokai-mura, Ibaraki 319-1194 (Japan); Goto, Masakazu [Nuclear Fuel Industries, Ltd., 14-10, Mita 3-chome, Minato-ku, Tokyo 108-0073 (Japan)

2007-07-01T23:59:59.000Z

220

Low temperature process for obtaining thin glass films  

DOE Patents (OSTI)

A method for coating a substrate with a glass-like film comprises, applying to the substrate an aqueous alcoholic solution containing a polymeric network of partially hydrolyzed metal alkoxide into which network there is incorporated finely powdered glass, whereby there is achieved on the substrate a coherent and adherent initial film; and heating said film to a temperature sufficient to melt said powdered glass component, thereby converting said initial film to a final densified film.

Brinker, C. Jeffrey (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Sinterable powders from laser driven reactions : final report  

E-Print Network (OSTI)

Extremely fine, uniform ceramic powders have been synthesized from Sil4 NH3 and C2H4 gas phase reactants that are heated by absorbing optical energy emitted from a C02 laser. Resulting Si, Si3N4 and SiC powders have been ...

Haggerty, John Scarseth

1981-01-01T23:59:59.000Z

222

THE PREPARATION AND PROPERTIES OF DISPERSION HARDENED URANIUM POWDER PRODUCTS. Quarterly Technical Report for the Perid Ending September 30, 1959  

SciTech Connect

Studies of the effect of UO/sub 2/ dispersions in uranium metal upon properties which exhibit resistance to radiation damage were continued. Procedures were developed for preparing uranium powders of particle size less than 5 mu by hydride decomposition, and methods were developed for controlled oxidation of the powders obtained. Equipment for vacuum hot pressing and/or extrusion of powders was designed and fabricated. Samples of dispersion-hardened uranium, containing 13 to 33 vol.% uranium oxide, were prepared by extrusion in the gamma uranium temperature range. These samples were subjected to thermal cycling tests through the alpha - beta transformation temperature using a total cycle time of 15 to 20 min. Dimensional stability was observed to be superior to thai of wrought, unalloyed uranium. Transverse bending tests revealed the hightemperature strength of the dispersion-hardened compositions to be substantially greater than that of wrought, unalloyed uranium. (For preceding period see NDA-21121.) (C.J.G.)

Arbiter, W.

1959-10-15T23:59:59.000Z

223

CoNiFe Alloy Powder Synthesis by High Energy Milling  

Science Conference Proceedings (OSTI)

CoNiFe alloy powder was synthesized by high energy milling of mixtures of Co, Ni and Fe powder as a bulk processing method for producing powder. A milling...

224

Homogeneous Precipitation of Nickel Hydroxide Powders  

SciTech Connect

Precipitation and characterization of nickel hydroxide powders were investigated. A comprehensive precipitation model incorporating the metal ion hydrolysis, complexation and precipitation reactions was developed for the production of the powders with urea precipitation method. Model predictions on Ni{sup 2+} precipitation rate were confirmed with precipitation experiments carried out at 90 C. Experimental data and model predictions were in remarkable agreement. Uncertainty in the solubility product data of nickel hydroxides was found to be the large contributor to the error. There were demonstrable compositional variations across the particle cross-sections and the growth mechanism was determined to be the aggregation of primary crystallites. This implied that there is a change in the intercalate chemistry of the primary crystallites with digestion time. Predicted changes in the concentrations of simple and complex ions in the solution support the proposed mechanism. The comprehensive set of hydrolysis reactions used in the model described above allows the investigation of other systems provided that accurate reaction constants are available. the fact that transition metal ions like Ni{sup 2+} form strong complexes with ammonia presents a challenge in the full recovery of the Ni{sup 2+}. On the other hand, presence of Al{sup 3+} facilitates the complete precipitation of Ni{sup 2+} in about 3 hours of digestion. A challenge in their predictive modeling studies had been the fact that simultaneous incorporation of more than one metal ion necessitates a different approach than just using the equilibrium constants of hydrolysis, complexation and precipitation reactions. Another limitation of using equilibrium constants is that the nucleation stage of digestion, which is controlled mainly by kinetics, is not fully justified. A new program released by IBM Almaden Research Center (Chemical Kinetics Simulator{trademark}, Version 1.01) lets the user change the order of kinetic components of a reaction which was set to stoichiometric constant with which the species appear in the reaction in KINSIM by default. For instance, in the case of LDH precipitation, the new program allows to change the order of species in the reactions associated with Al{sup 3+} and let the Ni{sup 2+} reactions take over. This could be carried on iteratively until a good fit between the experimental data and the predictions were observed. However for such studies availability of accurate equilibrium constants (especially for the solubility products for the solid phase) is a prerequisite.

Bora Mavis

2003-12-12T23:59:59.000Z

225

HOW TO OBTAIN EIA PRODUCTS AND SERVICES  

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

HOW TO OBTAIN EIA PRODUCTS AND SERVICES HOW TO OBTAIN EIA PRODUCTS AND SERVICES For further information on any or the following services, or for answers to energy information questions, please contact ElA's National Energy Information Outer National Energy Infomtaiion Center (NEIC) (202) 586-8800 Energy Information Administration (202) 586-0727 (fax) l-orrtslal Ituilding, Roam 1F-048 TTY: (202) 586-1ISI Washington. DC 20585 E-mail: infocir@eia.doc.gov Electronic Products and Services ElA's Internet Site Services offer nearly all E1A publications. Users can view and download selected pages or entire reports, search Tor information, download LIA tlaia and analysis applications, and find out about new KIA information products aitd sen-ices, World Wide Web: http://www.eia.doe.KOV Gopher: go ph« r ://go ph er .eia .d oe. gov

226

THE MICROPOROSITY OF BERYLLIUM OXIDE POWDER  

SciTech Connect

Beryllium oxide produced in the thermal decomposition of complex compounds is characterized by the low bulk weight and the inferior pressing properties. An investigation was made of the causes of the deterioration of the pressing properties of beryllium oxide. Beryllium oxide with a bulk weight of 0.107 g/cm/sup 3/ is pressed into briquets ai a pressure of 1 io 1.5 t/cm/sup 2/. It was found thai the amount of pressure applied does not change the properties of the pressed articles. The microporosity of the beryllium oxide sample was investigated as dependent on the sintering temperature. The main cause for the inferior pressing and the low bulk weight of beryllium oxide powder is the high microporosily of ihe sample. An increase of ihe densiiy of beryllium oxide does not only bring about a decrease of the microporosity bui also a change of the grain size. The properties of thue initial beryllium were investigated by means of a small-angle x-ray analysis. (TCO)

Astrakhantsev, S.M.; Umanskii, Ya.S.

1958-01-01T23:59:59.000Z

227

Sequence stratigraphy of the lower Pierre Shale in southern Powder River Basin, Wyoming, USA.  

E-Print Network (OSTI)

??Powder River Basin is one of the biggest interior sedimentary basins in the Rocky Mountain region. The Upper Cretaceous section of the southern Powder River (more)

Kaykun, Armagan

2013-01-01T23:59:59.000Z

228

Harold Brown, 1992 | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Harold Brown, 1992 Harold Brown, 1992 The Enrico Fermi Award Fermi Award Home Nomination & Selection Guidelines Award Laureates 2010's 2000's 1990's 1980's 1970's 1960's 1950's Ceremony The Life of Enrico Fermi Contact Information The Enrico Fermi Award U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-9395 E: fermi.award@science.doe.gov 1990's Harold Brown, 1992 Print Text Size: A A A RSS Feeds FeedbackShare Page Citation For his outstanding contributions to national security; in technical leadership in the development of nuclear weapons, in leadership of Lawrence Livermore National Laboratory in its formative years, in leadership in formulating nuclear deterrence policy during the difficult Cold War period; and for excellent service and continued counsel to the government

229

Governor Brown's Research Priorities in the areas of Clean Energy and  

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

Governor Brown's Research Priorities in the areas of Clean Energy and Governor Brown's Research Priorities in the areas of Clean Energy and Energy Efficiency Speaker(s): Clifford Rechtschaffen Edward Randolph Heather Sanders Laurie ten Hope Date: October 26, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Jodi Bellacicco Karen Salvini The Brown Administration has been pursuing numerous clean energy policies. These include developing 20,000 megawatts of renewable energy, including 12,000 megawatts of distributed renewable generation by 2020, aggressive building and appliance efficiency standards, including aggressive targets for zero net energy homes and businesses, new financing tools to incentivize widespread energy retrofits of existing buildings, development of energy storage to meet peak load demand and to provide

230

RECENT ADVANCES IN THE POWDER METALLURGY OF URANIUM CARBIDE  

SciTech Connect

uranium carbide, uranium metal is converted to uranium hydride powder and then carburized using propane gas. The carbide particles are irregular, of a relatively uniform size, and highly pyrophoric. Paraffin, camphor, cetyl alcohol, beeswax, and carbowax are used as lubricants and binders for compacting uranium carbide powder. Sintering studies were conducted for various times and temperatures, primarily in vacuum. An investigation is in progress to evaluate the effect of carbon content on the properties and irradiation stability of uranium carbide. It is shown that the powder metallurgy technique achieves a product wfth reasonably good density and apparentiy adequate properties for reactor utilization. (M.C.G.)

Kalish, H.S.

1962-10-31T23:59:59.000Z

231

Atomizing apparatus for making polymer and metal powders and whiskers  

DOE Patents (OSTI)

Method for making polymer particulates, such as spherical powder and whiskers, by melting a polymer material under conditions to avoid thermal degradation of the polymer material, atomizing the melt using gas jet means in a manner to form atomized droplets, and cooling the droplets to form polymer particulates, which are collected for further processing. Atomization parameters can be controlled to produce polymer particulates with controlled particle shape, particle size, and particle size distribution. For example, atomization parameters can be controlled to produce spherical polymer powders, polymer whiskers, and combinations of spherical powders and whiskers. Atomizing apparatus also is provided for atoomizing polymer and metallic materials.

Otaigbe, Joshua U. (Ames, IA); McAvoy, Jon M. (Moline, IL); Anderson, Iver E. (Ames, IA); Ting, Jason (Ames, IA); Mi, Jia (Pittsburgh, PA); Terpstra, Robert (Ames, IA)

2003-03-18T23:59:59.000Z

232

Enhanced Coal Bed Methane Recovery and CO2 Sequestration in the Powder River Basin  

Science Conference Proceedings (OSTI)

Unminable coal beds are potentially large storage reservoirs for the sequestration of anthropogenic CO2 and offer the benefit of enhanced methane production, which can offset some of the costs associated with CO2 sequestration. The objective of this report is to provide a final topical report on enhanced coal bed methane recovery and CO2 sequestration to the U.S. Department of Energy in fulfillment of a Big Sky Carbon Sequestration Partnership milestone. This report summarizes work done at Idaho National Laboratory in support of Phase II of the Big Sky Carbon Sequestration Partnership. Research that elucidates the interaction of CO2 and coal is discussed with work centering on the Powder River Basin of Wyoming and Montana. Sorption-induced strain, also referred to as coal swelling/shrinkage, was investigated. A new method of obtaining sorption-induced strain was developed that greatly decreases the time necessary for data collection and increases the reliability of the strain data. As coal permeability is a strong function of sorption-induced strain, common permeability models were used to fit measured permeability data, but were found inadequate. A new permeability model was developed that can be directly applied to coal permeability data obtained under laboratory stress conditions, which are different than field stress conditions. The coal permeability model can be used to obtain critical coal parameters that can be applied in field models. An economic feasibility study of CO2 sequestration in unminable coal seams in the Powder River Basin of Wyoming was done. Economic analyses of CO2 injection options are compared. Results show that injecting flue gas to recover methane from CBM fields is marginally economical; however, this method will not significantly contribute to the need to sequester large quantities of CO2. Separating CO2 from flue gas and injecting it into the unminable coal zones of the Powder River Basin seam is currently uneconomical, but can effectively sequester over 86,000 tons (78,200 Mg) of CO2 per acre while recovering methane to offset costs. The cost to separate CO2 from flue gas was identified as the major cost driver associated with CO2 sequestration in unminable coal seams. Improvements in separations technology alone are unlikely to drive costs low enough for CO2 sequestration in unminable coal seams in the Powder River Basin to become economically viable. Breakthroughs in separations technology could aid the economics, but in the Powder River Basin, they cannot achieve the necessary cost reductions for breakeven economics without incentives.

Eric P. Robertson

2010-06-01T23:59:59.000Z

233

Zro 2 Composite Powder from Zro 2 - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Carbothermal Production of Zrb2-Zro2 Composite Powder from ... Nut Shell Fiber and Electron-Beam Irradiation in Thermo-Mechanical Properties of HDPE ... Evaluation of Polypropylene/Saw Dust Composites Prepared with...

234

Process for synthesizing compounds from elemental powders and product  

DOE Patents (OSTI)

A process for synthesizing intermetallic compounds from elemental powders is described. The elemental powders are initially combined in a ratio which approximates the stoichiometric composition of the intermetallic compound. The mixed powders are then formed into a compact which is heat treated at a controlled rate of heating such that an exothermic reaction between the elements is initiated. The heat treatment may be performed under controlled conditions ranging from a vacuum (pressureless sintering) to compression (hot pressing) to produce a desired densification of the intermetallic compound. In a preferred form of the invention, elemental powders of Fe and Al are combined to form aluminide compounds of Fe[sub 3] Al and FeAl. 25 figures.

Rabin, B.H.; Wright, R.N.

1993-12-14T23:59:59.000Z

235

Usage Of Polyacetal Powders As Laser Ablation Propulsion Propellants  

Science Conference Proceedings (OSTI)

We examined impulse characteristics of polyoxymeythylene (POM) powders under irradiation by a TEA (Transversely-Excited at Atmospheric pressure)CO{sub 2} laser pulse. The impulse performance exhibited large scatter due to splashing particles. When the powder was hydraulically compacted to form a disk, the momentum coupling coefficient became comparable with that for bulk material, but the mass consumption was increased by several times.

Sasoh, Akihiro; Ogita, Naoya [Department of Aerospace Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Sinko, John E. [Micro-Nano Global Center of Excellence, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan)

2010-05-06T23:59:59.000Z

236

Manual Plasma Welding (PTAW) Evaluation with Powder Hardfacing Alloys  

Science Conference Proceedings (OSTI)

Repair practices for hardfacing alloys using gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW) have been evaluated in the past on hardfacing applied with various automated welding processes. Accessibility often limits the use of these welding processes in manual repair applications. Recent developments in plasma transfer arc welding (PTAW) powder welding systems have prompted evaluations of manual repair practices for hardfacing materials. The PTAW powder welding process feeds the fil...

2001-12-18T23:59:59.000Z

237

Supercritical fluid molecular spray thin films and fine powders  

DOE Patents (OSTI)

Solid films are deposited, or fine powders formed, by dissolving a solid material into a supercritical fluid solution at an elevated pressure and then rapidly expanding the solution through a short orifice into a region of relatively low pressure. This produces a molecular spray which is directed against a substrate to deposit a solid thin film thereon, or discharged into a collection chamber to collect a fine powder. The solvent is vaporized and pumped away. Solution pressure is varied to determine, together with flow rate, the rate of deposition and to control in part whether a film or powder is produced and the granularity of each. Solution temperature is varied in relation to formation of a two-phase system during expansion to control porosity of the film or powder. A wide variety of film textures and powder shapes are produced of both organic and inorganic compounds. Films are produced with regular textural feature dimensions of 1.0-2.0 .mu.m down to a range of 0.01 to 0.1 .mu.m. Powders are formed in very narrow size distributions, with average sizes in the range of 0.02 to 5 .mu.m.

Smith, Richard D. (Richland, WA)

1988-01-01T23:59:59.000Z

238

Stability of captopril in powder papers under three storage conditions  

Science Conference Proceedings (OSTI)

The stability of captopril in powder papers under three different storage conditions was determined. Captopril 12.5-mg tablets were triturated with lactose to a final concentration of 2 mg of captopril in 100 mg of powder. A total of 240 powder papers were prepared and stored in class A prescription vials (80 papers), 002G plastic zip-lock bags (80 papers), and Moisture Proof Barrier Bags (80 papers). Immediately after preparation and at 1, 2, 3, 4, 8, 12, and 24 weeks of storage at room temperature, powder papers under each storage condition were reweighed and the contents were assayed for captopril concentration by a stability-indicating high-performance liquid chromatographic method. More than 90% of the initial captopril concentration was retained under all storage conditions during the first 12 weeks of the study. Captopril disulfide, a degradation product, was detected in one sample stored in a plastic zip-lock bag at 24 weeks. Captopril was stable for the entire 24-week period in powder papers stored in either the class A prescription vial or the Moisture Proof Barrier Bag. Captopril in powder papers is stable for at least 12 weeks when stored at room temperature under all three storage conditions.

Taketomo, C.K.; Chu, S.A.; Cheng, M.H.; Corpuz, R.P. (Childrens Hospital, Los Angeles, CA (USA))

1990-08-01T23:59:59.000Z

239

Hot Dry Rock Geothermal Energy Development in the USA David Duchane and Donald Brown  

E-Print Network (OSTI)

utility options such as pumped storage or compressed air energy storage (CAES) is that the HDR power plant1 Hot Dry Rock Geothermal Energy Development in the USA by David Duchane and Donald Brown Los energy resources lies right beneath our feet in the form of hot dry rock (HDR), the common geologic

240

Thermal dissolution of brown and hard coals with the addition of natural and organosilicon compounds  

Science Conference Proceedings (OSTI)

The addition of activators (natural compounds and their mixtures with organo-silicates) was found to double the yield of liquid products from the thermal solvent extraction of Kansk-Achinsk brown coal, and increase by 20% the yield from Kuzbass bituminous coal. High concentrations of sulphur in the natural additives reduced the extractability of the coal.

Vol-Ehpshtein, A.B.; Gorlov, E.G.; Shataeva, T.A.; Shpil'berg, M.B.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov NOTICE OF POSTPONEMENT OF HEARING FOR CONSIDERATION AND POSSIBLE ADOPTION REVISIONS TO THE CALIFORNIA BUILDING ENERGY

242

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY Orr Springs Road, Ukiah, California ­ Off-site, at the County of Mendocino Department of Planning and Building Services, located at 501 Low Gap Road, Ukiah, California ­ Online, at [ http

243

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov Notice of major energy trends and issues facing California's electricity, natural gas, and transportation fuel

244

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY of Information to Third-Party Certifier for Submittal to the California Energy Commission California Appliance Efficiency Program California Code of Regulations, Title 20, Section 1606 This form is used twice in the data

245

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov Notice of California Natural Gas Stakeholders Working Group Meeting The Natural Gas Stakeholders Working Group

246

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 NINTH STREET SACRAMENTO, CA 95814-5512 www.energy.ca.gov California Appliance Efficiency of California Code of Regulations, federal law, and all other documents applicable to each category for which

247

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY, for the purpose of meeting continuing disclosure requirements, at least one of which must be a California State if they are not currently auditing a California State Agency governmental bond issue, but meet the requirement of auditing

248

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY to Third-Party Certifier for Submittal to the California Energy Commission California Appliance Efficiency Program California Code of Regulations, Title 20, Section 1606 This form is used twice in the data

249

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov Bright Schools All publicly funded California K-12 school districts are eligible for assistance from the Bright

250

The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)  

E-Print Network (OSTI)

We present ground-based spectroscopic verification of 6 Y dwarfs (see also Cushing et al.), 89 T dwarfs, 8 L dwarfs, and 1 M dwarf identified by the Wide-field Infrared Survey Explorer (WISE). Eighty of these are cold brown ...

Bochanski, John J.

251

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

Typical PerUnit Energy Savings and Incremental Cost Market Characteristics and Market Share InstalledSTATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 NINTH STREET SACRAMENTO, CA 95814-5512 www.energy.ca.gov March 25, 2013 INVITATION

252

Heterogeneous reactions in aircraft gas turbine engines R. C. Brown and R. C. Miake-Lye  

E-Print Network (OSTI)

Heterogeneous reactions in aircraft gas turbine engines R. C. Brown and R. C. Miake-Lye Aerodyne to estimate the maximum effect of heterogeneous reactions on trace species evolution in aircraft gas turbines species emissions from gas turbine engines are of interest because of environmental and human health

Waitz, Ian A.

253

STATE OF CALIFORNIA -NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

." .. I Proceeding History Since July 11, 2012 Adoption, On July 11,2012, the Energy Commission adoptedSTATE OF CALIFORNIA - NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov In the matter of

254

Shutdown Hideout Return Chemistry at Browns Ferry-2 and Hatch-2  

Science Conference Proceedings (OSTI)

This report describes and analyzes the results of augmented hideout return studies conducted at the Browns Ferry 2 and Hatch 2 boiling water reactors (BWRs) during shutdowns in the spring of 2003. The aim was to provide insights into differences in corrosion of similar fuel cladding materials at the two facilities.

2004-03-04T23:59:59.000Z

255

STATE OF CALIFORNIA NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

for Calculating the Energy Efficiency of Single- Voltage External AC-DC and AC-AC Power Supplies", August 11, 2004STATE OF CALIFORNIA ­ NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 NINTH STREET SACRAMENTO, CA 95814-5512 www.energy.ca.gov California Appliance Efficiency

256

Capping the Brown Energy Consumption of Internet Services at Low Cost  

E-Print Network (OSTI)

energy" (produced via carbon-intensive means) relative to renewable or "green" energy. This paper current efficiency trends, this gigantic amount of energy will have nearly doubled by 2011 for an overall-intensive energy as "brown" energy, in contrast with "green" or renewable energy.) We argue that placing caps

Martonosi, Margaret

257

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov Notice of Availability Overall Program Guidebook for the Renewable Energy Program, Fourth Edition Publication No. CEC-300

258

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov Notice of Availability Developing Renewable Generation on State Property Installing Renewable Energy on State Buildings

259

STATE OF CALIFORNIA --NATURAL RESOURCES AGENCY EDMUND G BROWN, JR., Governor CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

STATE OF CALIFORNIA -- NATURAL RESOURCES AGENCY EDMUND G BROWN, JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov Notice of Availability 2010 Integrated Energy Policy Report Update Publication No. CEC-100-2010-001-CMF Docket No. 10-IEP

260

Capabilities of the POWDER Instrument | ORNL Neutron Sciences  

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

Capabilities of the POWDER Instrument Capabilities of the POWDER Instrument The scientific areas that may benefit from using the HB-2A instrument are condensed matter physics, chemistry, geology, and material science. Due to its versatility, this instrument can be employed for a large variety of experiments, but it is particularly adapted for determining crystal structures with relatively large unit cells (dmax ≈ 28 Å), as well as complex magnetic structures. Furthermore, studies of phase transitions, thermal expansion, quantitative analysis, and ab-initio structure solution from powder data can be undertaken. A full range of ancillary sample environments can be used to provide a complete control of thermodynamic variables such as temperature, magnetic field, and pressure. The following examples highlight some of the basic features and

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


261

Microsoft Word - Powder River Basin 1_6_06.doc  

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

Economics of Powder River Basin Economics of Powder River Basin Coalbed Methane Development Prepared for: U.S. Department of Energy Prepared by: Gregory C. Bank Vello A. Kuuskraa vkuuskraa@adv-res.com Advanced Resources International, Inc. January 2006 Disclaimer This material was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States nor the United States Department of Energy, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. The Economics of Powder River Basin Coalbed Methane Development

262

Magnetic Structure Analysis from Neutron Powder Diffraction Data Using GSAS  

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

Magnetic Structure Analysis from Neutron Powder Diffraction Data Using GSAS Magnetic Structure Analysis from Neutron Powder Diffraction Data Using GSAS This set of web pages provides reference information from the Magnetic Structure Analysis from Neutron Powder Diffraction Data Using GSAS workshop presented at the 2006 American Conference on Neutron Scattering held in St. Charles, IL, June 18-22, 2006. Workshop Schedule: 9:00-9:05 am: Introduction (B.H. Toby) 9:05-9:50 am: History, Color symmetry & Shubnikov space groups (B. Chakoumous) Lecture notes: History and Color symmetry & Shubnikov space groups 9:50-10:20 am: Magnetic extinctions classes & common magnetic structure types (R.B. Von Dreele) Lecture Notes Break 10:50-11:45 am: Overview of representational analysis & FullProf implementation (L.C. Chapon) Lecture Notes and Accompanying files

263

URANIUM ALLOY POWDERS BY DIRECT REDUCTION OF OXIDES  

SciTech Connect

A process is outlined for the production of uranium alloy powders by co- reduction of mintures of uranium oxide and alloy element oxides. The reduction of mechanical mintures of the oxides of uranium and alloy element with calcium in a sealed reaction vessel is shown to produce powder wtth a variation in particle composition, although of consistert composition over various size fractions. The particular alloy systems which are considered are uranium--nickel, uranium-- chromium, uranium --molybdenum, and uranium--niobium. The uranium-molybdenum and uranium--niobium powders are single phase (metastable gamma), which is of consequence in the production of dimensionaHy stable nuclear fuels. Potential applications of some of these alloys are discussed. (auth)

Myers, R.H.; Robins, R.G.

1959-10-31T23:59:59.000Z

264

Nano powders, components and coatings by plasma technique  

DOE Patents (OSTI)

Ultra fine and nanometer powders and a method of producing same are provided, preferably refractory metal and ceramic nanopowders. When certain precursors are injected into the plasma flame in a reactor chamber, the materials are heated, melted and vaporized and the chemical reaction is induced in the vapor phase. The vapor phase is quenched rapidly to solid phase to yield the ultra pure, ultra fine and nano product. With this technique, powders have been made 20 nanometers in size in a system capable of a bulk production rate of more than 10 lbs/hr. The process is particularly applicable to tungsten, molybdenum, rhenium, tungsten carbide, molybdenum carbide and other related materials.

McKechnie, Timothy N. (Brownsboro, AL); Antony, Leo V. M. (Huntsville, AL); O' Dell, Scott (Arab, AL); Power, Chris (Guntersville, AL); Tabor, Terry (Huntsville, AL)

2009-11-10T23:59:59.000Z

265

Method for forming biaxially textured articles by powder metallurgy  

DOE Patents (OSTI)

A method of preparing a biaxially textured alloy article comprises the steps of preparing a mixture comprising Ni powder and at least one powder selected from the group consisting of Cr, W, V, Mo, Cu, Al, Ce, YSZ, Y, Rare Earths, (RE), MgO, CeO.sub.2, and Y.sub.2 O.sub.3 ; compacting the mixture, followed by heat treating and rapidly recrystallizing to produce a biaxial texture on the article. In some embodiments the alloy article further comprises electromagnetic or electro-optical devices and possesses superconducting properties.

Goyal, Amit (Knoxville, TN); Williams, Robert K. (Knoxville, TN); Kroeger, Donald M. (Knoxville, TN)

2002-01-01T23:59:59.000Z

266

Process for preparing fine grain titanium carbide powder  

DOE Patents (OSTI)

A method for preparing finely divided titanium carbide powder in which an organotitanate is reacted with a carbon precursor polymer to provide an admixture of the titanium and the polymer at a molecular level due to a crosslinking reaction between the organotitanate and the polymer. The resulting gel is dried, pyrolyzed to drive off volatile components and provide carbon. The resulting solids are then heated at an elevated temperature to convert the titanium and carbon to high-purity titanium carbide powder in a submicron size range.

Janney, M.A.

1985-03-12T23:59:59.000Z

267

Environmental Assessment for the Partial Funding of a Proposed Life Sciences Building at Brown University, Providence, Rhode Island  

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

Environmental Assessment for the Partial Funding of a Environmental Assessment for the Partial Funding of a Proposed Life Sciences Building at Brown University, Providence, Rhode Island FINAL July 2003 National Aeronautics and Space Administration Washington, D.C. 20546-0001 U.S. Department of Energy, Chicago Operations Office Argonne, Illinois 60439 Environmental Assessment for the Partial Funding of a Proposed Life Sciences Building at Brown University, Providence, Rhode Island Environmental Assessment for the Partial Funding of a Proposed Life Sciences Building at Brown University, Providence, Rhode Island FINAL Lead Agency: National Aeronautics and Space Administration Cooperating Agency: U.S. Department of Energy Proposed Action: Partial funding for a new Life Sciences Building at Brown

268

Microsoft PowerPoint - Brown_Idaho on Renewable Energy.ppt  

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

Policy Options for Policy Options for Renewable Energy Matthew H. Brown Energy Program Director National Conference of State Legislatures matthew.brown@ncsl.org September 2003 Organization The Idaho context Policies for Idaho to consider The Importance of This Committee In general, other bodies of government like the PUC will wait for direction from the legislature on what to do, especially with renewables. The legislature's decisions are critical. Idaho Power Generation Despite the fact that Idaho generation is overwhelmingly hydro, retail power rates have fluctuated considerably in the past five years. This has happened in large part because Idaho utilities have needed to purchase power from more volatile regional power markets. Natural gas prices drive many of these markets.

269

Revisiting the Hanbury Brown-Twiss Setup for Phase Fluctuating Bose Gases  

E-Print Network (OSTI)

The Hanbury Brown-Twiss experiment has proved to be an effective means of measuring two-point correlation function of identical particles. We analyze experimental observation of stripes formation of a phase fluctuating Bose-Einstein condensates in a highly elongated 3D traps [Dettmer {\\em et al.}, Phys. Rev. Lett. {\\bf 87}, 160406 (2001)] by means of axial two-point correlation functions. We also predict that the stripes are present in quasi-1D Bose gas in the mean-field as well as in the hard-core bosons regimes. These stripes can be realized by measuring the axial two-point correlation functions by using the Bragg interferometric method which is similar to the original Hanbury Brown and Twiss experimental setup.

Tarun Kanti Ghosh

2004-06-22T23:59:59.000Z

270

STATE OF CALIFORNIA - THE NATURAL RESOURCES AGENCY EDMUND G. BROWN, JR., Governor  

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

THE NATURAL RESOURCES AGENCY EDMUND G. BROWN, JR., Governor THE NATURAL RESOURCES AGENCY EDMUND G. BROWN, JR., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street, MS 14 Sacramento, California 95814 Main website: www.energy.ca.gov January 12, 2011 United States Department of Energy (DOE) Via e-mail: expartecommunications@hq.doe.gov RE: Ex parte communication of the California Energy Commission Docket No. EERE-2008-BT-STD-0005 To Whom It May Concern, On January 6, 2011, Mike Leaon, Harinder Singh, Ken Rider, and Dennis Beck of the California Energy Commission (CEC) had a telephone conversation with Victor Petrolati of DOE regarding the above referenced proceeding, concerning energy conservation standards for battery chargers and Class A external power supplies. The purpose of the meeting was for CEC and DOE staff to update each other on the

271

Application of lactic acid in combination with melanosis inhibitors to improve shelf life of Texas brown shrimp (Penaeus aztecus)  

E-Print Network (OSTI)

The shelf life of fresh shrimp stored on ice is limited by two factors: melanosis (blackspot) and microbial spoilage. In this study L-lactic acid was tested, alone and in combination with sodium bisulfite and 4-hexylresorcinol, to determine their effectiveness as both melanosis and microbial spoilage inhibitors. Brown shrimp (Penaeus aztecus) were obtained from the Gulf of Mexico on board a commercial fishing vessel. Immediately after harvest, the shrimp were separated from the rest of the catch. The shrimp were then headed, washed, and sorted into six groups that were treated by dipping for I min in the following solutions: (1) Control (sea water), (2) 1.0% L-lactic acid, (3) 1.25% sodium bisulfite, (4) 0.0025% 4-hexylresorcinol, (5) 1.25% sodium bisulfite with 1.0% L-lactic acid, or (6) 0.0025% 4- hexylresorcinol with 1.0% L-lactic acid. Each of the six groups of shrimp was split into 2 subgroups. One subgroup of shrimp was treated immediately after sorting and the other subgroup was treated after a 2-hr delay on deck at ambient temperature to simulate normal practices during peak harvesting times. Each subgroup of shrimp was placed in a nylon mesh bag, completely submerged in the appropriate dip solution for 1 min with moderate up and down agitation, and drained. Each treatment group was stored on ice for 16 days in separate ice chests, and examined over the storage period for aerobic plate count (APC), pH, and degree of melanosis. Overall, this study demonstrated that treatment with L-lactic acid, alone or in combination with 4-hexylresorcinol, had no detectable effect on the microbiological shelf life of brown shrimp (Penaeus aztecus). In addition, 4-hexylresorcinol performed exceptionally well as a melanosis inhibitor, whether alone or in combination with L-lactic acid. However, extensive bacterial growth was demonstrated in the 4-hexylresorcinol dip solution during normal storage on deck, creating the potential for a heavy bacterial inoculation of shrimp during a typical dipping process. Addition of L-lactic acid to the 4-hexylresorcinol dip solution prevented bacterial growth in the dip solution and did not interfere with melanosis inhibition.

Benner, Ronald Allen

1993-01-01T23:59:59.000Z

272

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process  

DOE Patents (OSTI)

This invention relates to an improved process of preparing Bi-Sr-Ca-Cu-O (BSCCO) powders, and more particularly, to a process for preparing BSCCO powders that utilize freeze-drying. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution; grinding the flakes to form a powder; freeze-drying the frozen powder; heating the powder to form dry green precursor powders; denitrating the powders; and heating the powders to form phase-clean Bi-2223 powders.

Balachandran, U.; Krishnaraj, P.; Eror, N.G.; Lelovic, M.

1994-12-31T23:59:59.000Z

273

Process Data Network Architecture Plan for the Browns Ferry Nuclear Plants  

Science Conference Proceedings (OSTI)

Computer networks are essential in efficiently managing the large volumes of data used in power plant operation. Nuclear plants, however, have been cautious in applying computer technology because of their unique safety, security, and regulatory requirements. This report describes a strategic plan developed to manage the evolution of the network that processes real-time operating data for Tennessee Valley Authority's Browns Ferry nuclear plants.

1994-01-01T23:59:59.000Z

274

Luminant's Big Brown Plant wins for continuous improvement and safety programs  

SciTech Connect

Staff from Luminant's Big Brown Plant accepted the PRB Coal Users' Group's top honour for innovative improvements to coal-handling systems and a sterling safety record. The numbers reveal their accomplishments: an average EFOR less than 4%, an availability factor averaging 90% for a plant that burns a lignite/PRB mix, and staff who worked more than 2.6 million man-hours since March 2000 without a lost-time injury. 13 photos., 1 tab.

Peltier, R.

2008-07-15T23:59:59.000Z

275

Investigation of Browns Ferry 2 Reactor Cycle 12 Fuel Corrosion Failures  

Science Conference Proceedings (OSTI)

BWR fuel rods from 63 bundles of the Reload 10 GE13 (9x9) design developed leaks during Cycle 12 of the Browns Ferry 2 reactor. Poolside examination subsequently revealed accelerated cladding corrosion as the apparent failure mechanism (EPRI report 1009729). The failure root cause could not be determined from site examinations alone and thus follow-on hot cell examinations were needed to provide additional information that might help to further understand the failure mechanism, the root cause, and linger...

2006-06-19T23:59:59.000Z

276

Investigation of Browns Ferry 2 Reactor Cycle 12 Fuel Corrosion Failures, Volume 3: Assessment of Results  

Science Conference Proceedings (OSTI)

Boiling water reactor (BWR) fuel rods from 63 bundles of the Reload 10 GE13 (9x9) design developed leaks during Cycle 12 of the Browns Ferry 2 reactor. Root cause evaluations, including poolside and hot cell examinations were performed. The details of the investigation are documented in a series of reports and presentations. This report compiles significant findings of the overall investigation and assesses these results with respect to the cause of failure. In addition, new laboratory data to support th...

2007-12-05T23:59:59.000Z

277

The Kellogg brown & Root Transport Reactor: PSDR Test Results and Economic Evaluation  

Science Conference Proceedings (OSTI)

To be competitive, new coal-based power plants must have low capital costs and use coal in a highly efficient, cost-effective, and environmentally superior manner. One of the most cost-competitive, coal-based power plant technologies is believed to be an air-blown, combined cycle incorporating a partial gasifier and a pressurized char combustor. This report presents preliminary results from the evaluation of one such technology, Kellogg Brown and Root's (KBR) gasification combined cycle (GCC). The report...

1999-12-08T23:59:59.000Z

278

Humic substances and nitrogen-containing compounds from low rank brown coals  

SciTech Connect

Coal is one of the sources of nitrogen-containing compounds (NCCs). Recovery of NCCs from brown coals in high yield was carried out from tars of stepwise semicoking of brown coals. Humic acids have been shown to contain many types of nitrogen compounds. Humic acids are thought to be complex aromatic macromolecules with amino acids, amino sugars, peptides, and aliphatic compounds that are involved in the linkages between the aromatic groups. Humic acids extracted from peats, brown coals, and lignites, are characterized using different techniques. Humic substances (HSs) have several known benefits to agriculture. The properties of humic substances vary from source to source, because they are heterogeneous mixtures of biochemical degradation products from plant and animal residues, and synthesis activities of microorganisms. HSs have been considered to be a significant floculant in surface water filtration plants for the production of drinking water as well as the processing of water. HSs are produced from chemical and biological degradation of plant and animal residues and from synthetic activities of microorganisms.

Demirbas, A.; Kar, Y.; Deveci, H. [Selcuk University, Konya (Turkey). Department of Chemical Engineering

2006-03-15T23:59:59.000Z

279

Beyond the T Dwarfs: Theoretical Spectra, Colors, and Detectability of the Coolest Brown Dwarfs  

E-Print Network (OSTI)

We explore the spectral and atmospheric properties of brown dwarfs cooler than the latest known T dwarfs. Our focus is on the yet-to-be-discovered free-floating brown dwarfs in the \\teff range from $\\sim$800 K to $\\sim$130 K and with masses from 25 to 1 \\mj. This study is in anticipation of the new characterization capabilities enabled by the launch of SIRTF and the eventual launch of JWST. We provide spectra from $\\sim$0.4 \\mic to 30 \\mic, highlight the evolution and mass dependence of the dominant H$_2$O, CH$_4$, and NH$_3$ molecular bands, consider the formation and effects of water-ice clouds, and compare our theoretical flux densities with the sensitivities of the instruments on board SIRTF and JWST. The latter can be used to determine the detection ranges from space of cool brown dwarfs. In the process, we determine the reversal point of the blueward trend in the near-infrared colors with decreasing \\teff, the \\teffs at which water and ammonia clouds appear, the strengths of gas-phase ammonia and methan...

Burrows, A; Lunine, J; Burrows, Adam; Sudarsky, David; Lunine, Jonathan

2003-01-01T23:59:59.000Z

280

Study of bound hydrogen in powders of diamond nanoparticles  

Science Conference Proceedings (OSTI)

In order to access feasibility of increasing albedo of very cold neutrons from powder of diamond nanoparticles, we studied hydrogen bound to surface of diamond nanoparticles, which causes unwanted losses of neutrons. We showed that one could decrease a fraction of hydrogen atoms from a ratio C{sub 7.4{+-}0.15}H to a ratio C{sub 12.4{+-}0.2}H by means of thermal treatment and outgasing of powder. Measurements of atomic excitation spectra of these samples, using a method of inelastic incoherent neutron scattering, indicate that residual hydrogen is chemically bound to carbon, while a removed fraction was composed of adsorbed water. The total cross section of scattering of neutrons with a wavelength of 4.4 Angstrom-Sign on residual hydrogen atoms equals 108 {+-} 2 b; it weakly changes with temperature. Thus preliminary cleaning of powder from hydrogen and its moderate cooling do not improve considerably neutron albedo from powder of nano-diamonds. An alternative approach is isotopic replacement of hydrogen by deuterium.

Krylov, A. R.; Lychagin, E. V.; Muzychka, A. Yu. [Joint Institute for Nuclear Research (Russian Federation); Nesvizhevsky, V. V., E-mail: nesvizhevsky@ill.eu [Institut Laue-Langevin (Russian Federation); Nekhaev, G. V.; Strelkov, A. V. [Joint Institute for Nuclear Research (Russian Federation); Ivanov, A. S. [Institut Laue-Langevin (Russian Federation)

2011-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

COAL QUALITY AND GEOCHEMISTRY, POWDER RIVER BASIN, WYOMING AND MONTANA  

E-Print Network (OSTI)

Chapter PQ COAL QUALITY AND GEOCHEMISTRY, POWDER RIVER BASIN, WYOMING AND MONTANA By G.D. Stricker Tertiary coal beds and zones in the Northern RockyMountains and Great Plains region, U.S. Geological Survey of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains region, U

282

A FEED SCREW POWDER SEAL FOR THE REACTOR TOWER  

SciTech Connect

The two-way sealing of a feed screw for a fine powder corveyer is accomplished with a split gland. One end is externally threaded to receive the gland nut and the other end is flanged for bolting to a feed-screw housing. The correct installation of the gland is discussed. (C.J.G.)

Collier, M.

1959-11-26T23:59:59.000Z

283

Combustion synthesis and quasi-isostatic densication of powder cermets  

E-Print Network (OSTI)

Combustion synthesis and quasi-isostatic densi®cation of powder cermets E.A. Olevskya,* , E-propagating High-temperature synthesis (also known as SHS or combustion synthesis) presents a bright potential equation parameters. The distortion undergone by the combustion synthesis products during QIP densi

Meyers, Marc A.

284

Explosively driven low-density foams and powders  

DOE Patents (OSTI)

Hollow RX-08HD cylindrical charges were loaded with boron and PTFE, in the form of low-bulk density powders or powders dispersed in a rigid foam matrix. Each charge was initiated by a Comp B booster at one end, producing a detonation wave propagating down the length of the cylinder, crushing the foam or bulk powder and collapsing the void spaces. The PdV work done in crushing the material heated it to high temperatures, expelling it in a high velocity fluid jet. In the case of boron particles supported in foam, framing camera photos, temperature measurements, and aluminum witness plates suggest that the boron was completely vaporized by the crush wave and that the boron vapor turbulently mixed with and burned in the surrounding air. In the case of PTFE powder, X-ray photoelectron spectroscopy of residues recovered from fragments of a granite target slab suggest that heating was sufficient to dissociate the PTFE to carbon vapor and molecular fluorine which reacted with the quartz and aluminum silicates in the granite to form aluminum oxide and mineral fluoride compounds.

Viecelli, James A. (Orinda, CA); Wood, Lowell L. (Simi Valley, CA); Ishikawa, Muriel Y. (Livermore, CA); Nuckolls, John H. (Danville, CA); Pagoria, Phillip F. (Livermore, CA)

2010-05-04T23:59:59.000Z

285

Oxide Dispersion Strengthened Iron Aluminide by CVD Coated Powders  

SciTech Connect

This I &I Category2 program developed chemical vapor deposition (CVD) of iron, aluminum and aluminum oxide coated iron powders and the availability of high temperature oxidation, corrosion and erosion resistant coating for future power generation equipment and can be used for retrofitting existing fossil-fired power plant equipment. This coating will provide enhanced life and performance of Coal-Fired Boilers components such as fire side corrosion on the outer diameter (OD) of the water wall and superheater tubing as well as on the inner diameter (ID) and OD of larger diameter headers. The program also developed a manufacturing route for readily available thermal spray powders for iron aluminide coating and fabrication of net shape component by powder metallurgy route using this CVD coated powders. This coating can also be applid on jet engine compressor blade and housing, industrial heat treating furnace fixtures, magnetic electronic parts, heating element, piping and tubing for fossil energy application and automotive application, chemical processing equipment , heat exchanger, and structural member of aircraft. The program also resulted in developing a new fabrication route of thermal spray coating and oxide dispersion strengthened (ODS) iron aluminide composites enabling more precise control over material microstructures.

Asit Biswas Andrew J. Sherman

2006-09-25T23:59:59.000Z

286

Geothermal resources of the Southern Powder River Basin, Wyoming  

DOE Green Energy (OSTI)

This report describes the geothermal resources of the Southern Powder River Basin. The report contains a discussion of the hydrology as it relates to the movement of heated water, a description and interpretation of the thermal regime, and four maps: a generalized geological map, a structure contour map, a thermal gradient contour map, and a ground water temperature map. 10 figs. (ACR)

Heasler, H.P.; Buelow, K.L.; Hinckley, B.S.

1985-06-13T23:59:59.000Z

287

Mg2B2O5 Material Production from Waste Magnesite Ore Powder ...  

Science Conference Proceedings (OSTI)

In this studies, the MgO powder produced from waste magnesite powder. The B2O3 ... Then, the products were mixed stekiometrik by weight. The mixture of...

288

JOURNAL OF MATERIALS SCIENCE LETTERS 17 (1998) 17231725 Computer simulation of powder compaction of spherical particles  

E-Print Network (OSTI)

in material industries. A good example is the compaction of ceramic or metallic powders to make green com- cles. However, as most metallic and ceramic powder systems used in industry are polydispersed and can

Ekere, Ndy

289

Electrically insulating phosphate coatings for iron powder based electromagnetic core applications  

E-Print Network (OSTI)

Powdered metals, such as iron, are a common building block for electromagnetic cores. An iron powder was reacted with phosphoric acid to create a layer of iron phosphate on each particle. This electrically insulating ...

Nolan, William Rane

2009-01-01T23:59:59.000Z

290

Nonaqueous solution synthesis process for preparing oxide powders of lead zirconate titanate and related materials  

DOE Patents (OSTI)

A process is disclosed for producing powders of perovskite-type compounds which comprises mixing a metal alkoxide solution with a lead acetate solution to form a homogeneous, clear metal solution, adding an oxalic acid/n-propanol solution to this metal solution to form an easily filterable, free-flowing precursor powder and then calcining this powder. This process provides fine perovskite-phase powders with ferroelectric properties which are particularly useful in a variety of electronic applications. 4 figs.

Voigt, J.A.; Sipola, D.L.; Tuttle, B.A.; Anderson, M.T.

1999-06-01T23:59:59.000Z

291

Multi-Seam Well Completion Technology: Implications for Powder River Basin Coalbed Methane Production  

Science Conference Proceedings (OSTI)

The purpose of this study is to evaluate the potential benefits of applying multiseam [well] completion (MSC) technology to the massive stack of low-rank coals in the Powder River Basin. As part of this, the study objectives are: Estimate how much additional CBM resource would become accessible and technically recoverable--compared to the current practice of drilling one well to drain a single coal seam; Determine whether there are economic benefits associated with MSC technology utilization (assuming its widespread, successful application) and if so, quantify the gains; Briefly examine why past attempts by Powder River Basin CBM operators to use MSC technology have been relatively unsuccessful; Provide the underpinnings to a decision whether a MSC technology development and/or demonstration effort is warranted by DOE. To a great extent, this assessment builds on the previously published study (DOE, 2002), which contains many of the key references that underlie this analysis. It is available on the U.S. Department of Energy, National Energy technology Laboratory, Strategic Center for Natural Gas website (www.netl.doe.gov/scng). It is suggested that readers obtain a copy of the original study to complement the current report.

Office of Fossil Energy; National Energy Technology Laboratory

2003-09-01T23:59:59.000Z

292

Production of NANO powder of aluminum nitride by pulsed power method  

Science Conference Proceedings (OSTI)

After revision of applications, physical and chemical properties and various methods for production of nano powder of AlN, Pulsed Electrical Exploded Wire Discharge (EEW) method for production of various kinds of these nano powders has been studied in ... Keywords: AlN, EEW, low inductance pulse capacitor, nano powder, pulsed power, spark gap

M. M. Daemi Attaran; A. Erfanian; P. Ghassemi Kian

2008-04-01T23:59:59.000Z

293

Model independent pre-processing of X-ray powder diffraction profiles  

Science Conference Proceedings (OSTI)

Precise knowledge of X-ray diffraction profile shape is crucial in the investigation of the properties of matter in crystals powder. Line-broadening analysis is the fourth pre-processing step in most of the full powder pattern fitting softwares. The ... Keywords: Hankel--Lanczos singular value decomposition (HLSVD), Morphological filtering, X-ray powder diffraction

M. Ladisa; A. Lamura; T. Laudadio; G. Nico

2007-01-01T23:59:59.000Z

294

An Improved Non-Conventional Method for Obtaining Nuclear Pure ...  

Science Conference Proceedings (OSTI)

Aug 1, 2000 ... Uranium oxide (U3O8) is obtained from this precipitate by calcination for ... The latter is reduced by stannous chloride to obtain uranium trioxide...

295

Density-permittivity relationships for powdered and granular materials  

SciTech Connect

Relationships between the permittivities of powdered or granular solid materials and their bulk densities (density of the air-particle mixture) are discussed. Linear relationships between functions of the permittivity and bulk density are identified that are useful in determining permittivity of solids from measurements of the permittivity of pulverized samples. The usefulness of several dielectric mixture equations for calculating solid material permittivity from measured permittivity of pulverized samples is also discussed. Results of testing linear extrapolation techniques and dielectric mixture equations on pulverized coal, limestone, plastics, and granular wheat and flour are presented. Recommendations are provided for reliable estimation of solid material permittivities or changes in permittivities of powdered and granular materials as a result of changes in their bulk densities.

Nelson, S.O. [USDA ARS, Athens, GA (United States). Russell Research Center

2005-10-01T23:59:59.000Z

296

Assessing the imprint of space, geography, land cover, and host species on the local abundance of a generalist nest parasite, the Brown-headed Cowbird.  

E-Print Network (OSTI)

??The Brown-headed Cowbird is an obligate nest parasite suspected of causing local population declines in several threatened and endangered passerine species. Much attention has been (more)

Cummings, Katherine Elizabeth Rainey 1982-

2013-01-01T23:59:59.000Z

297

Staging Effects on Catalyst Deactivation with Powder River Basin Coal  

Science Conference Proceedings (OSTI)

The objectives of the current study were to investigate cost benefits or disadvantages resulting from operating Powder River Basin (PRB-) fired boilers at different combustion staging levels. The study's inherent assumption is that increased staging levels increases catalyst deactivation, requiring less ammonia consumption at the selective catalytic reduction (SCR) unit but more catalyst replacement events. The program sought to evaluate the impacts of staging on total SCR operation and maintenance (OM) ...

2010-11-10T23:59:59.000Z

298

Report on Characterization and Processing of MDD Powder  

SciTech Connect

Uranium oxide powers most civilian nuclear reactors worldwide. A large infrastructure based on a well-established technology is in place to support this strategic component of the energy industry. Because uranium oxide fuels are used so ubiquitously, it is expected that ceramic fuel pellets will continue to be used. A better understanding of the properties of the starting materials, the processing methods used to fabricate fuel pellets and how the properties of pellets change in service, are important aspects being studied via experiments, models and simulations. A close integration of these approaches is essential if we are to find new ways to optimize both the fuel composition and structure for the purpose of improving performance, e.g., designed microstructures, reducing process losses, e.g. by net shape sintering, and enabling reprocessing of used fuel; e.g., incorporation of transuranics. Ceramic oxide fuel pellets are typically cold pressed and sintered from a powder feedstock. Consequently, a complete understanding of pellet fabrication requires a thorough knowledge of the process from powder synthesis through quality control and acceptance. In this study, uranium oxide powder synthesized by Modified Direct Denitration (MDD) is evaluated. Use of powders synthesized by novel, simplified approaches such as MDD are both a challenge and an opportunity. The MDD synthesis process offers an opportunity to simplify the fabrication process potentially reducing process losses. MDD also provides a simple path to incorporate transuranics from used fuel reprocessing with minimal handling. The challenge is to demonstrate and ultimately prove the reliability and reproducibility of simplified processing with the performance of fuel pellets experiencing in-pile service. This report summarizes a processing study of uranium oxide pellets made from MDD uranium oxide.

Luther, Erik Paul [Los Alamos National Laboratory

2012-08-21T23:59:59.000Z

299

Mesoporous-silica films, fibers, and powders by evaporation  

SciTech Connect

This invention pertains to surfactant-templated nanometer-scale porosity of a silica precursor solution and forming a mesoporous material by first forming the silica precursor solution into a preform having a high surface area to volume ratio, then rapid drying or evaporating a solvent from the silica precursor solution. The mesoporous material may be in any geometric form, but is preferably in the form of a film, fiber, powder or combinations thereof. The rapid drying or evaporation of solvent from the solution is accomplished by layer thinning, for example spin casting, liquid drawing, and liquid spraying respectively. Production of a film is by layer thinning, wherein a layer of the silica precursor solution is formed on a surface followed by removal of an amount of the silica precursor solution and leaving a geometrically thinner layer of the silica precursor solution from which the solvent quickly escapes via evaporation. Layer thinning may be by any method including but not limited to squeegeeing and/or spin casting. In powder formation by spray drying, the same conditions of fast drying exists as in spin-casting (as well as in fiber spinning) because of the high surface-area to volume ratio of the product. When a powder is produced by liquid spraying, the particles or micro-bubbles within the powder are hollow spheres with walls composed of mesoporous silica. Mesoporous fiber formation starts with a similar silica precursor solution but with an added pre-polymer making a pituitous mixture that is drawn into a thin strand from which solvent is evaporated leaving the mesoporous fiber(s).

Bruinsma, Paul J. (Kennewick, WA); Baskaran, Suresh (Kennewick, WA); Bontha, Jagannadha R. (Richland, WA); Liu, Jun (West Richland, WA)

1999-01-01T23:59:59.000Z

300

Low temperature fabrication from nano-size ceramic powders  

Science Conference Proceedings (OSTI)

The objective of the compaction process is to produce a dense green-state compact from a nanosize powder that subsequently can be sintered at high temperatures to form a dense ceramic piece. High density in the green-state after pressing is of primary importance for achieving high densities after sintering. Investigation of the compaction behavior of ceramic powders, therefore, is an important part of characterization of raw ceramic powders and evaluation of their compaction behavior, analysis of interaction between particles, and the study of microstructure of green body (unsintered) during pressure-forming processes. The compaction of nanosize ceramic particles into high density green bodies is very difficult. For the nanosize materials used in this study (amorphous Si{sub 3}N{sub 4} and {gamma} Al{sub 2}O{sub 3}), there is no evidence by TEM of partial sintering after synthesis. Nevertheless, strong aggregation forces, such as the van der Waals surface forces of attraction, exist and result in moderate precursor particle agglomeration. More importantly, these attractive surface forces, which increase in magnitude with decreasing particle size, inhibit interparticle sliding necessary for particle rearrangement to denser bodies during subsequent compaction. Attempts to produce high density green body compacts of nanosize particles, therefore, generally have been focused on overcoming these surface forces of attraction by using either dispersive fluids or high pressures with or without lubricating liquids. In the present work, the use of high pressure has been employed as a means of compacting nanosize powders to relatively high green densities.

Gonzalez, E.J.; Piermarini, G.J.; Hockey, B. [and others

1995-06-01T23:59:59.000Z

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


301

Developments in Powder Metallurgy and Hot Isostatic Processing  

Science Conference Proceedings (OSTI)

Over the past four years, the Electric Power Research Institute (EPRI) has worked with industry and the ASME Boiler and Pressure Vessel Code (BPVC) to introduce powder metallurgy and hot isostatic processing (PM-HIP) for pressure-retaining component applications. As of September 2013, two alloys, grade 91 (UNS K90901) steel and type 316L (UNS S31603) stainless steel, have been approved through ASME Code Cases for use in components such as valves, pump housings, elbows, sweepolets, and flanges. ...

2013-12-19T23:59:59.000Z

302

Glovebox characterization and barrier integrity testing using fluorescent powder  

SciTech Connect

This paper presents a method for characterizing the spread of contamination and testing the barrier integrity of a new glovebox during material transfer operations and glove change-outs using fluorescent powder. Argonne National Laboratory-West has performed this test on several new gloveboxes prior to putting them into service. The test is performed after the glovebox has been leak tested and all systems have been verified to be operational. The purpose of the test is to show that bag-in/bag-out operations and glove change-outs can be accomplished without spreading the actual contaminated material to non-contaminated areas. The characterization test also provides information as to where contamination might be expected to build-up during actual operations. The fluorescent powder is used because it is easily detectable using an ultra-violet light and disperses in a similar fashion to radioactive material. The characterization and barrier integrity test of a glovebox using fluorescent powder provides a visual method of determining areas of potential contamination accumulation and helps evaluate the ability to perform clean transfer operations and glove change-outs.

Wahlquist, D.R. [Argonne National Lab., Idaho Falls, ID (United States). Technology Development Div.

1996-07-01T23:59:59.000Z

303

Supercritical fluid molecular spray film deposition and powder formation  

DOE Patents (OSTI)

Solid films are deposited, or fine powders formed, by dissolving a solid material into a supercritical fluid solution at an elevated pressure and then rapidly expanding the solution through a short orifice into a region of relatively low pressure. This produces a molecular spray which is directed against a substrate to deposit a solid thin film thereon, or discharged into a collection chamber to collect a fine powder. Upon expansion and supersonic interaction with background gases in the low pressure region, any clusters of solvent are broken up and the solvent is vaporized and pumped away. Solute concentration in the solution is varied primarily by varying solution pressure to determine, together with flow rate, the rate of deposition and to control in part whether a film or powder is produced and the granularity of each. Solvent clustering and solute nucleation are controlled by manipulating the rate of expansion of the solution and the pressure of the lower pressure region. Solution and low pressure region temperatures are also controlled.

Smith, Richard D. (Richland, WA)

1986-01-01T23:59:59.000Z

304

THE SOLAR NEIGHBORHOOD. XXVIII. THE MULTIPLICITY FRACTION OF NEARBY STARS FROM 5 TO 70 AU AND THE BROWN DWARF DESERT AROUND M DWARFS  

Science Conference Proceedings (OSTI)

We report on our analysis of Hubble Space Telescope/NICMOS snapshot high-resolution images of 255 stars in 201 systems within {approx}10 pc of the Sun. Photometry was obtained through filters F110W, F180M, F207M, and F222M using NICMOS Camera 2. These filters were selected to permit clear identification of cool brown dwarfs through methane contrast imaging. With a plate scale of 76 mas pixel{sup -1}, NICMOS can easily resolve binaries with subarcsecond separations in the 19.''5 Multiplication-Sign 19.''5 field of view. We previously reported five companions to nearby M and L dwarfs from this search. No new companions were discovered during the second phase of data analysis presented here, confirming that stellar/substellar binaries are rare. We establish magnitude and separation limits for which companions can be ruled out for each star in the sample, and then perform a comprehensive sensitivity and completeness analysis for the subsample of 138 M dwarfs in 126 systems. We calculate a multiplicity fraction of 0.0{sup +3.5}{sub -0.0}% for L companions to M dwarfs in the separation range of 5-70 AU, and 2.3{sup +5.0}{sub -0.7}% for L and T companions to M dwarfs in the separation range of 10-70 AU. We also discuss trends in the color-magnitude diagrams using various color combinations and present astrometry for 19 multiple systems in our sample. Considering these results and results from several other studies, we argue that the so-called brown dwarf desert extends to binary systems with low-mass primaries and is largely independent of primary mass, mass ratio, and separations. While focusing on companion properties, we discuss how the qualitative agreement between observed companion mass functions and initial mass functions suggests that the paucity of brown dwarfs in either population may be due to a common cause and not due to binary formation mechanisms.

Dieterich, Sergio B.; Henry, Todd J. [Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302-4106 (United States); Golimowski, David A. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Krist, John E. [Jet Propulsion Laboratory, Pasadena, CA 91109 (United States); Tanner, Angelle M., E-mail: dieterich@chara.gsu.edu [Department of Physics and Astronomy, Mississippi State University, Starkville, MS 39762 (United States)

2012-08-15T23:59:59.000Z

305

Sol-spray preparation, particulate characteristics, and sintering of alumina powders  

SciTech Connect

Fine alumina powders of spherical morphology and narrow particle-size distribution have been synthesized by a technique that uses precipitation/peptization/spray drying of boehmite sol prepared from aluminum nitrate. The spray-dried powder was further washed with solvents of varying polarities, such as acetone, isopropanol, and tert-butanol. This post-spray-drying treatment changed the powder`s particle-size distribution, morphology, density, and compaction characteristics. Microstructure, dielectric properties, and effect of post-treatment on the boehmite-sol-derived alumina powders in reducing agglomeration are discussed.

Varma, H.K.; Mani, T.V.; Damodaran, A.D.; Warrier, K.G.K. [Regional Research Lab., Trivandrum (India); Balachandran, U. [Argonne National Lab., IL (United States)

1993-07-01T23:59:59.000Z

306

Fuel Reliability Program: Browns Ferry Fuel Corrosion Failures Root Cause Investigation  

Science Conference Proceedings (OSTI)

Sixty-three GE13 fuel bundles failed in Browns Ferry Unit 2 (BF2) during Cycle 12; three GE13 assemblies failed in BF Unit 3 (BF3) during Cycle 11. The affected fuel in BF2 was in its second cycle of operation and the fuel in BF3 in its third at the time of failure. Global Nuclear Fuel (GNF), General Electric-Hitachi (GEH), Tennessee Valley Authority (TVA), and the Electric Power Research Institute (EPRI) investigated the cause of the failures. The investigation included evaluations of materials and manu...

2010-09-30T23:59:59.000Z

307

"1. Browns Ferry","Nuclear","Tennessee Valley Authority",3309  

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

Alabama" Alabama" "1. Browns Ferry","Nuclear","Tennessee Valley Authority",3309 "2. James H Miller Jr","Coal","Alabama Power Co",2675 "3. Barry","Coal","Alabama Power Co",2575 "4. E C Gaston","Coal","Alabama Power Co",1878 "5. H Allen Franklin Combined Cycle","Gas","Southern Power Co",1815 "6. Joseph M Farley","Nuclear","Alabama Power Co",1734 "7. Widows Creek","Coal","Tennessee Valley Authority",1604 "8. Colbert","Coal","Tennessee Valley Authority",1574 "9. E B Harris Electric Generating Plant","Gas","Southern Power Co",1269

308

Room-Temperature Ferromagnetism in Chemically Synthesized Sn?-xCox O? Powders  

SciTech Connect

Room temperature ferromagnetism is observed in chemically synthesized powder samples of Sn??xCox O? with x = 0.005 and 0.01. Magnetic hysteresis loops are ovserved at 300K with coercivity Hc ~ 630 Oe, saturation magnetization Ms ~0.133?? and about 31% remenance. Analyses of the magnetization data of paramagnetic samples with x = 0.01 and 0.03, measured as a function of temperature (3-330K) and magnetic field (up to 50kOe), indicated the presence of Co? ions with spin S = 3/2. Magnetic data obtained from samples prepared at different temperatures indicate that the observed ferromagnetism for x ? 0.01 might have been triggered by changes in the oxygen stiochiometry.

Punnoose, Alex; Hays, Jason S.; Gopal, Vidyut; Shutthanandan, V.

2004-08-30T23:59:59.000Z

309

Rich Brown  

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

University. Links applicationpdf icon Resume Complete publications This publications database is an ongoing project, and not all Division publications are represented here...

310

Browne bio  

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

Peter Nanos Director Los Alamos National Laboratory Retired Vice Admiral G. Peter Nanos, named Interim Director of Los Alamos National Laboratory January 6, 2003, was confirmed by...

311

Wear Resistant Cu-Ag Alloys Obtained by Sliding-induced Chemical ...  

Science Conference Proceedings (OSTI)

Conditioning of Composite Lubricant Powder for Cold Spray Confirmation of Role of ... New Developments in High Velocity Air-fuel Spraying Ni- Al2O3 Based...

312

Process and apparatus for obtaining silicon from fluosilicic acid  

DOE Patents (OSTI)

Process for producing low cost, high purity solar grade Si wherein a reduction reaction, preferably the reduction of SiF.sub.4, by an alkali metal (liquid Na preferred) is carried out essentialy continuously by injecting of reactants in substantially stoichiometric proportions into a reaction chamber having a controlled temperature thereby to form a mist or dispersion of reactants. The reactants being supplied at such a rate and temperature that the reaction takes place far enough away from the entry region to avoid plugging of reactants at the entry region, the reaction is completed and whereby essentially all reaction product solidifies and forms a free flowing powder before reaction product hits a reaction chamber wall. Thus, the reaction product does not adhere to the reaction chamber wall or pick up impurities therefrom. Separation of reaction products is easily carried out by either a leach or melt separation process.

Sancier, Kenneth M. (Menlo Park, CA)

1985-07-16T23:59:59.000Z

313

Carbothermal reduction growth of ZnO nanostructures on sapphire-comparisons between graphite and activated charcoal powders  

Science Conference Proceedings (OSTI)

Zinc oxide (ZnO) nanostructures were grown by the vapour phase transport (VPT) method on a-plane sapphire substrates via carbothermal reduction of ZnO powders with various carbon powders. Specifically, graphite powder and activated charcoal powder (of ... Keywords: Growth, Nanostructures, ZnO

M. Biswas; E. McGlynn; M. O. Henry

2009-02-01T23:59:59.000Z

314

Early maturation processes in coal. Part 2: Reactive dynamics simulations using the ReaxFF reactive force field on Morwell Brown coal structures  

E-Print Network (OSTI)

Early maturation processes in coal. Part 2: Reactive dynamics simulations using the ReaxFF reactive force field on Morwell Brown coal structures Elodie Salmon a , Adri C.T. van Duin b , François Lorant Brown coal using the ReaxFF reactive force field. We find that these reactive MD simulations

Goddard III, William A.

315

Production of films and powders for semiconductor device applications  

DOE Patents (OSTI)

A process is described for chemical bath deposition of selenide and sulfide salts as films and powders employable as precursors for the fabrication of solar cell devices. The films and powders include (1) Cu{sub x}Se{sub n}, wherein x=1--2 and n=1--3; (2) Cu{sub x}Ga{sub y}Se{sub n}, wherein x=1--2, y=0--1 and n=1--3; (3) Cu{sub x}In{sub y}Se{sub n}, wherein x=1--2.27, y=0.72--2 and n=1--3; (4) Cu{sub x}(InGa){sub y}Se{sub n}, wherein x=1--2.17, y=0.96--2 and n=1--3; (5) In{sub y}Se{sub n}, wherein y=1--2.3 and n=1--3; (6) Cu{sub x}S{sub n}, wherein x=1--2 and n=1--3; and (7) Cu{sub x}(InGa){sub y}(SeS){sub n}, wherein x=1--2, y=0.07--2 and n=0.663--3. A reaction vessel containing therein a substrate upon which will form one or more layers of semiconductor material is provided, and relevant solution mixtures are introduced in a sufficient quantity for a sufficient time and under favorable conditions into the vessel to react with each other to produce the resultant salt being prepared and deposited as one or more layers on the substrate and as a powder on the floor of the vessel. Hydrazine is present during all reaction processes producing non-gallium containing products and optionally present during reaction processes producing gallium-containing products to function as a strong reducing agent and thereby enhance reaction processes. 4 figs.

Bhattacharya, R.N.; Noufi, R.; Li Wang

1998-03-24T23:59:59.000Z

316

New coal dewatering technology turns sludge to powder  

SciTech Connect

Virginian Tech's College of Engineering's Roe-Hoan Yoon and his group have developed a hyperbaric centrifuge that can dewater coal as fine as talcum powder. Such coal fines presently must be discarded by even the most advanced coal cleaning plants because of their high moisture content. The new technology can be used with the Microcel technology to remove ash, to re-mine the fine coal discarded to impoundments and to help minimize waste generation. Virginia Tech has received $1 million in funding from the US Department of State to also help the Indian coal industry produce a cleaner product. 1 photo.

NONE

2009-03-15T23:59:59.000Z

317

ECCENTRIC ROLLING OF POWDER AND BONDING AGENT INTO SPHERICAL PELLETS  

DOE Patents (OSTI)

A machine is described for pelletizing powder and bonding agent into spherical pellets of high density and uniform size. In this device, the material to be compacted is added to a flat circular pan which is moved in a circular orbit in a horizontal plane about an axis displaced from that of the pan's central axis without rotating the pan about its central axis. This movement causes the material contained therein to roll around the outside wall of the container and build up pellets of uniform shape, size, and density.

Patton, G. Jr.; Zirinsky, S.

1961-06-01T23:59:59.000Z

318

GRADIENT INDEX SPHERES BY THE SEQUENTIAL ACCRETION OF GLASS POWDERS  

Science Conference Proceedings (OSTI)

The Department of Energy is seeking a method for fabricating mm-scale spheres having a refractive index that varies smoothly and continuously from the center to its surface [1]. The fabrication procedure must allow the creation of a range of index profiles. The spheres are to be optically transparent and have a refractive index differential greater than 0.2. The sphere materials can be either organic or inorganic and the fabrication technique must be capable of scaling to low cost production. Mo-Sci Corporation proposed to develop optical quality gradient refractive index (GRIN) glass spheres of millimeter scale (1 to 2 mm diameter) by the sequential accretion and consolidation of glass powders. Other techniques were also tested to make GRIN spheres as the powder-accretion method produced non-concentric layers and poor optical quality glass spheres. Potential ways to make the GRIN spheres were (1) by "coating" glass spheres (1 to 2 mm diameter) with molten glass in a two step process; and (2) by coating glass spheres with polymer layers.

MARIANO VELEZ

2008-06-15T23:59:59.000Z

319

Method for removing oxide contamination from silicon carbide powders  

DOE Patents (OSTI)

The described invention is directed to a method for removing oxide contamination in the form of oxygen-containing compounds such as SiO/sub 2/ and B/sub 2/O/sub 3/ from a charge of finely divided silicon carbide. The silicon carbide charge is contacted with a stream of hydrogen fluoride mixed with an inert gas carrier such as argon at a temperature in the range of about 200/sup 0/ to 650/sup 0/C. The oxides in the charge react with the heated hydrogen fluoride to form volatile gaseous fluorides such as SiF/sub 4/ and BF/sub 3/ which pass through the charge along with unreacted hydrogen fluoride and the carrier gas. Any residual gaseous reaction products and hydrogen fluoride remaining in the charge are removed by contacting the charge with the stream of inert gas which also cools the powder to room temperature. The removal of the oxygen contamination by practicing the present method provides silicon carbide powders with desirable pressing and sintering characteristics. 1 tab.

Brynestad, J.; Bamberger, C.E.

1984-08-01T23:59:59.000Z

320

O [G] IS A FREE MODULE OVER O[G] KENNETH A. BROWN, IAIN GORDON, AND J. T. STAFFORD  

E-Print Network (OSTI)

O [G] IS A FREE MODULE OVER O[G] KENNETH A. BROWN, IAIN GORDON, AND J. T. STAFFORD Abstract. We GORDON, AND J. T. STAFFORD that UH = {x U : (x) = x 1} = O, that the natural map U O U U H given by x

Gordon, Iain

Note: This page contains sample records for the topic "brown powder obtained" 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

STATE OF CALIFORNIA --THE RESOURCES PROVIDER Edmund G. Brown Jr., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814  

E-Print Network (OSTI)

electronically, on paper, and orally at Energy Commission hearings. A. A Brief History of the Energy Commission1 STATE OF CALIFORNIA -- THE RESOURCES PROVIDER Edmund G. Brown Jr., Governor CALIFORNIA ENERGY COMMISSION 1516 Ninth Street Sacramento, California 95814 Main website: www.energy.ca.gov INITIAL STATEMENT

322

A Comparison of Cocrystal Structure Solutions from Powder and Single Crystal Techniques  

DOE Green Energy (OSTI)

We demonstrate the effectiveness and accuracy of high resolution powder diffraction for determination of cocrystal structures through a double-blind study. Structures of 10 cocrystals of varying complexity were determined independently using single crystal and powder techniques. The two methodologies give identical molecular packing and hydrogen bond topology, and an rms difference in covalent bond lengths of 0.035 {angstrom}. Powder techniques are clearly sufficient to establish a complete characterization of cocrystal geometry.

S Lapidus; P Stephens; K Arora; T Shattock; M Zaworotko

2011-12-31T23:59:59.000Z

323

Production and Characterization of Atomized U-Mo Powder by the Rotating Electrode Process  

SciTech Connect

In order to produce feedstock fuel powder for irradiation testing, the Idaho National Laboratory has produced a rotating electrode type atomizer to fabricate uranium-molybdenum alloy fuel. Operating with the appropriate parameters, this laboratory-scale atomizer produces fuel in the desired size range for the RERTR dispersion experiments. Analysis of the powder shows a homogenous, rapidly solidified microstructure with fine equiaxed grains. This powder has been used to produce irradiation experiments to further test adjusted matrix U-Mo dispersion fuel.

C.R. Clark; B.R. Muntifering; J.F. Jue

2007-09-01T23:59:59.000Z

324

Microsoft PowerPoint - Brown_CBP_Codes_and_CodeIntegration_kgb_final.ppt  

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

Partnership: Partnership: Demonstration of Coupling and Code Integration Kevin G. Brown, Ph.D. PA Community of Practice Technical Exchange Richland, WA 13-14 April 2010 Cementitious Barriers Partnership 13 April 2010 Linking Prototype Cases to Performance Models through System Abstraction and Validated by Laboratory and Field Testing Cementitious Barriers Partnership Sulfate Attack as a "Proof of Principle" for Coupling of Phenomena 13 April 2010 THAMES (NIST) Virtual "micro-probe" of microstructure * Constructs time-dependent 3-D virtual microstructures of a cementitious binder during hydration or degradation * Computes important engineering properties of a concrete made from a binder at prescribed times Planned model improvements * Embed geochemical modeling code (GEMS) into microstructure

325

Genome sequence of the brown Norway rat yields insights into mammalian evolution  

SciTech Connect

The laboratory rat (Rattus norvegicus) is an indispensable tool in experimental medicine and drug development, having made inestimable contributions to human health. We report here the genome sequence of the Brown Norway (BN) rat strain. The sequence represents a high-quality 'draft' covering over 90 percent of the genome. The BN rat sequence is the third complete mammalian genome to be deciphered, and three-way comparisons with the human and mouse genomes resolve details of mammalian evolution. This first comprehensive analysis includes genes and proteins and their relation to human disease, repeated sequences, comparative genome-wide studies of mammalian orthologous chromosomal regions and rearrangement breakpoints, reconstruction of ancestral karyotypes and the events leading to existing species, rates of variation, and lineage-specific and lineage-independent evolutionary events such as expansion of gene families, orthology relations and protein evolution.

Gibbs, Richard A.; Weinstock, George M.; Metzker, Michael L.; Muzny, Donna M.; Sodergren, Erica J.; Scherer, Steven; Scott, Graham; Steffen, David; Worley, Kim C.; Burch, Paula E.; Okwuonu, Geoffrey; Hines, Sandra; Lewis, Lora; DeRamo, Christine; Delgado, Oliver; Dugan-Rocha, Shannon; Miner, George; Morgan, Margaret; Hawes, Alicia; Gill, Rachel; Holt, Robert A.; Adams, Mark D.; Amanatides, Peter G.; Baden-Tillson, Holly; Barnstead, Mary; Chin, Soo; Evans, Cheryl A.; Ferriera, Steven; Fosler, Carl; Glodek, Anna; Gu, Zhiping; Jennings, Don; Kraft, Cheryl L.; Nguyen, Trixie; Pfannkoch, Cynthia M.; Sitter, Cynthia; Sutton, Granger G.; Venter, J. Craig; Woodage, Trevor; Smith, Douglas; Lee, Hong-Maei; Gustafson, Erik; Cahill, Patrick; Kana, Arnold; Doucette-Stamm, Lynn; Weinstock, Keith; Fechtel, Kim; Weiss, Robert B.; Dunn, Diane M.; Green, Eric D.; Blakesley, Robert W.; Bouffard, Gerard G.; de Jong, Pieter J.; Osoegawa, Kazutoyo; Zhu, Baoli; Marra, Marco; Schein, Jacqueline; Bosdet, Ian; Fjell, Chris; Jones, Steven; Krzywinski, Martin; Mathewson, Carrie; Siddiqui, Asim; Wye, Natasja; McPherson, John; Zhao, Shaying; Fraser, Claire M.; Shetty, Jyoti; Shatsman, Sofiya; Geer, Keita; Chen, Yixin; Abramzon, Sofyia; Nierman, William C.; Havlak, Paul H.; Chen, Rui; Durbin, K. James; Egan, Amy; Ren, Yanru; Song, Xing-Zhi; Li, Bingshan; Liu, Yue; Qin, Xiang; Cawley, Simon; Cooney, A.J.; D'Souza, Lisa M.; Martin, Kirt; Wu, Jia Qian; Gonzalez-Garay, Manuel L.; Jackson, Andrew R.; Kalafus, Kenneth J.; McLeod, Michael P.; Milosavljevic, Aleksandar; Virk, Davinder; Volkov, Andrei; Wheeler, David A.; Zhang, Zhengdong; Bailey, Jeffrey A.; Eichler, Evan E.; Tuzun, Eray; Birney, Ewan; Mongin, Emmanuel; Ureta-Vidal, Abel; Woodwark, Cara; Zdobnov, Evgeny; Bork, Peer; Suyama, Mikita; Torrents, David; Alexandersson, Marina; Trask, Barbara J.; Young, Janet M.; et al.

2004-02-02T23:59:59.000Z

326

Speakers: Adam Sieminski, Deutsche Bank Stephen P. A. Brown, Resources for the Future  

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

5: "Energy and the Economy" 5: "Energy and the Economy" Speakers: Adam Sieminski, Deutsche Bank Stephen P. A. Brown, Resources for the Future Donald L. Paul, University of Southern California Energy Institute David Sandalow, DOE Christof Rühl, Group Chief Economist, BP [Note: Recorders did not pick up introduction of panel (see biographies for details on the panelists) or introduction of session.] Adam: Microphone. So, we've lost a little bit of time because of all of the sessions running a bit over, but here is how we're going to make that up. I had about 12 minutes worth of slides that we're going to abandon. Isn't that great? We get to hear from the panelists rather than me. Now, my name is Adam Sieminski. I'm the Chief Energy Economist for Deutsche Bank. Don't let that intimidate you. I'm really a civil

327

STATE OF CALIFORNIA - NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor  

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

NATURAL RESOURCES AGENCY EDMUND G. BROWN JR., Governor CALIFORNIA ENERGY COMMISSION 1516 NINTH STREET SACRAMENTO, CA 95814-5512 WWIN.energy.ca.gov March 28, 2012 Lamont Jackson Office of Electricity Delivery and Energy Reliability Mail Code: OE-20 U.S. Department of Energy 1000 Independence Avenue SW Washington, DC 20585 Lamont.Jackson@hg.doe.gov Dear Mr. Jackson: The California Energy Commission staff thanks you for the opportunity to provide comments on DOE's Request for Information (RFI) on the Rapid Response Team for Transmission Docket No. RRTT-IR-001. The RFI focuses on learning how to make the development times for generation and transmission more commensurate with one another. In the RFI, the DOE highlighted three problems that may arise in the

328

Annual radiological environmental operating report: Browns Ferry Nuclear Plant, 1992. Operations Services/Technical Programs  

Science Conference Proceedings (OSTI)

This report describes the environmental radiological monitoring program conducted by TVA in the vicinity of Browns Ferry Nuclear Plant (BFN) in 1992. The program includes the collection of samples from the environment and the determination of the concentrations of radioactive materials in the samples. Samples are taken from stations in the general area of the plant and from areas not influenced by plant operations. Station locations are selected after careful consideration of the weather patterns and projected radiation doses to the various areas around the plant. Material sampled includes air, water, milk, foods, vegetation, soil, fish, sediment, and direct radiation levels. Results from stations near the plant are compared with concentrations from control stations and with preoperational measurements to determine potential impacts of plant operations. Small amounts of Co-60 and Cs-134 were found in sediment samples downstream from the plant. This activity in stream sediment would result in no measurable increase over background in the dose to the general public.

Not Available

1993-04-01T23:59:59.000Z

329

Field Testing of Activated Carbon Injection Options for Mercury Control at TXU's Big Brown Station  

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

Field TesTing oF AcTivATed cArbon Field TesTing oF AcTivATed cArbon injecTion opTions For Mercury conTrol AT TXu's big brown sTATion Background The 2005 Clean Air Mercury Rule will require significant reductions in mercury emissions from coal-fired power plants. Lignite coal is unique because of its highly variable ash content (rich in alkali and alkaline-earth elements), high moisture levels, low chlorine content, and high calcium content. Unique to Texas lignite coals are relatively high iron and selenium concentrations. When combusting Texas lignite coals, up to 80 percent of the mercury in the flue gas is present as elemental mercury, which is not readily captured by downstream pollution control devices. To better understand the factors that influence mercury control at units firing

330

Diffraction Analysis of Ball Milled Platinum Based Powders (Pt-ZrO2)  

Science Conference Proceedings (OSTI)

... series of powder samples with different amount of ZrO2 and ball milling time were examined by the synchrotron radiation at Brookhaven National Laboratory.

331

J-30: Preparation of AlNY2O3 Nano-composite Powder Using ...  

Science Conference Proceedings (OSTI)

Abstract Scope, AlNY2O3 nano-composite powder was synthesized by carbothermal reduction method by using a combustion synthesized precursor. Firstly...

332

Slurry calcination process for conversion of aqueous uranium and plutonium to a mixed oxide powder  

SciTech Connect

Pilot plant studies indicate that a slurry calcination process for conversion of uranium and plutonium solutions to a mixed oxide powder can be operated at a plant scale.

Jones, M K; Jenkins, W J

1980-01-01T23:59:59.000Z

333

Investigation of residual stresses in the laser melting of metal powders in additive layer manufacturing.  

E-Print Network (OSTI)

??Laser Melting (LM) is an Additive Layer Manufacturing (ALM) process used to produce three-dimensional parts from metal powders by fusing the material in a layerby- (more)

Roberts, Ibiye Aseibichin

2012-01-01T23:59:59.000Z

334

Energy efficiency opportunities within the powder coating industry - Energy audit and pinch analysis.  

E-Print Network (OSTI)

??The powder coating industries in Sweden use about 525 GWh of energy every year. The need to reduce the energy use is increasing due to (more)

Bergek, Charlotte

2011-01-01T23:59:59.000Z

335

Thermal Stability of HDDR-treated Nd-Fe-B-type Magnetic Powder  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B...

336

H20: Synthesis of Fe100-xNx Powders by Mechanical Alloying and ...  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B...

337

Metal oxide superconducting powder comprised of flake-like single crystal particles  

DOE Patents (OSTI)

Powder of a ceramic superconducting material is synthesized such that each particle of the powder is a single crystal having a flake-like, nonsymmetric morphology such that the c-axis is aligned parallel to the short dimension of the flake. Nonflake powder is synthesized by the normal methods and is pressed into pellets or other shapes and fired for excessive times to produce a coarse grained structure. The fired products are then crushed and ground producing the flake-like powder particles which exhibit superconducting characteristics when aligned with the crystal lattice. 3 figs.

Capone, D.W.; Dusek, J.

1994-10-18T23:59:59.000Z

338

Metal oxide superconducting powder comprised of flake-like single crystal particles  

DOE Patents (OSTI)

Powder of a ceramic superconducting material is synthesized such that each particle of the powder is a single crystal having a flake-like, nonsymmetric morphology such that the c-axis is aligned parallel to the short dimension of the flake. Nonflake powder is synthesized by the normal methods and is pressed into pellets or other shapes and fired for excessive times to produce a coarse grained structure. The fired products are then crushed and ground producing the flake-like powder particles which exhibit superconducting characteristics when aligned with the crystal lattice.

Capone, Donald W. (Bolingbrook, IL); Dusek, Joseph (Downers Grove, IL)

1994-01-01T23:59:59.000Z

339

Dispersion Strengthened FeCrAlY Alloys by Flake Powder Processing  

Science Conference Proceedings (OSTI)

selective reduction as a means of controlling the oxygen content of selected ... from the grinding balls, the attritor restarted and the powder added. This was done.

340

Finding benchmark brown dwarfs to probe the IMF as a function of time  

E-Print Network (OSTI)

Using a simulated disk brown dwarf (BD) population, we find that new large area infrared surveys are expected to identify enough BDs covering wide enough mass--age ranges to potentially measure the mass function down to ~0.03Mo, and the BD formation history out to 10 Gyr, at a level capable of establishing if BD formation follows star formation. We suggest these capabilities are best realised by spectroscopic calibration of BD properties (Teff, g and [M/H]) which, when combined with a measured luminosity and an evolutionary model can give BD mass and age relatively independent of BD atmosphere models. Such calibration requires an empirical understanding of how BD spectra are affected by variations in these properties, and thus the identification and study of "benchmark BDs" whose age and composition can be established independently. We identify the best sources of benchmark BDs as young open cluster members, moving group members, and wide (>1000AU) BD companions to both subgiant stars and high mass white dwarfs (WDs). We have used 2MASS to measure a wide L dwarf companion fraction of 2.7(+0.7/-0.5)%, which equates to a BD companion fraction of 34(+9/-6)% for an alpha~1 companion mass function. Using this value we simulate populations of wide BD binaries, and estimate that 80(+21/-14) subgiant--BD binaries, and 50(+13/-10) benchmark WD--BD binaries could be identified using current and new facilities. The WD--BD binaries should all be identifiable using the Large Area Survey component of UKIDSS combined with Sloan. Discovery of the subgiant--BD binaries will require a NIR imaging campaign around a large (~900) sample of Hipparcos subgiants. If identified, spectral studies of these benchmark brown dwarfs could reveal the spectral sensitivities across the Teff, g and [M/H] space probed by new surveys.

D. J. Pinfield; H. R. A. Jones; P. W. Lucas; T. R. Kendall; S. L. Folkes; A. C. Day-Jones; R. J. Chappelle; I. A. Steele

2006-03-13T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Productivity and Quality of Brown Midrib (bmr) Sorghum Varieties to Producers in Central America  

E-Print Network (OSTI)

The improved dry matter digestibility of the brown midrib (bmr) sorghum cultivars is attributed to constitutive deficiencies of the lignin biosynthesis pathways which results in lower lignin concentrations. The lower lignin concentrations are expressed only in a homozygous recessive genotypes and it is phenotypically identified by a brown to tan vascular coloration present in the mid-rib of the leaf blades. Utilizing this trait increases forage consumption and productivity of both dairy and beef production. There is a need to extend this trait into more forage production systems, including those in Central America where forages constitute a major portion of the ruminants diets. To achieve this goal, the bmr12 gene was incorporated via conventional breeding, into 16 lines derived from commonly used Central American sorghum varieties. These experimental lines were tested for agronomic performance during 2010 and 2011 in the Central American region. In addition, grain and biomass composition were estimated using near-infrared reflectance spectroscopy (NIRS) whereas the dry biomass digestibility was evaluated using an in vitro approach. The combined analysis indicated the bmr trait increased in vitro dry matter digestibility and reduced acid detergent lignin and acid detergent fiber levels. This combination results in improved sorghum forage quality. Furthermore, negative traits typically associated with bmr mutants such as plant height reduction, delayed flowering, and lodging problems were not observed and the bmr trait had no effect on grain composition. Additionally, post hoc tests identified CI0947bmr as the best experimental line for dry both biomass and grain yield across multiple environments. Stability analysis, identified CI0947bmr as the most stable genotype for both traits. Finally, the which-won-where biplot analysis graphically identified CI0947bmr as the best bmr inbred for Honduras, Guatemala and Nicaragua across several environments.

Portillo Rodriguez, Ostilio Rolando

2013-05-01T23:59:59.000Z

342

Determination of elastic properties of single aerogel powder particles with the AFM  

E-Print Network (OSTI)

Atomic force microscopy (AFM) allows direct measurement of local elastic sample properties by force spectroscopy. The AFM tip indents into a soft sample and the resulting relation between loading force and indentation is used to determine the elastic properties of the sample. In order to calculate the indentation an analytical expression for the sensor response vs. z-piezo displacement based on the Hertz model of mechanical contact is derived. This model is fitted to data obtained on a silica aerogel sample using a least-squares method. The aerogel powder particles were analysed individually for their surface structure and elastic behaviour. Prior to the indentation experiments, the aerogel surface was characterised by AFM in the tapping mode. The results were validated by the comparison of data obtained by using two types of cantilevers of very di#erent sti#nesses (spring constant k"0.2 and 54 N/m) and by assessing the reversibility of the indentation process. Tip indentations smaller than 200 nm were usually reversible, whereas indentations of 2000 nm caused irreversibilities. # 1998 Elsevier Science B.V. All rights reserved.

Robert W. Stark; Tanja Drobek; Marcus Weth; Jochen Fricke; Wolfgang M. Heckl

1998-01-01T23:59:59.000Z

343

Investigation of moisture in titanium metal powder by pulsed NMR  

SciTech Connect

A sample of titanium metal powder QC 1779 was subjected to five different treatments of dyring and moisture exposure to estimate the effectiveness of normal drying and handling procedures used in the pyrotechnics processing. The treatments were drying in air, drying in two different vacuum furnaces, exposure to normal humidity, and exposure to 100 percent humidity. Statistical evaluation of the NMR results indicates that there is a significant difference between the moisture content of each treatment. Although the combined effects of temperature, pressure, humidity, and treatment time were not studied in a designed manner to determine their significance on the effectiveness of the drying techniques and moisture uptake by sample QC 1779, the experimental evidence does indicate that all four variables do affect the results of the treatments. 2 figures, 6 tables.

Attalla, A.; Bowman, R.C. Jr.; Craft, B.D.; Love, C.M.; Yauger, R.L.

1977-05-13T23:59:59.000Z

344

Application of a Plasma Powder Welding to engine valves  

SciTech Connect

In hardfacing of automobile engine valves made of heat resisting steel such as 21-4N, conventional oxy-acetylene gase welding has been currently conducted manually by well trained operators because of using cast Stellite rods as the filler. In accordance with the strong demands of automatic welding, the authors newly developed an automatically controlled Plasma Powder Welding (PPW) system. This system is characterized by the application of a high thermal density plasma arc as heat source and by using power filler which melts more easily than bar cast rods. Moreover, this PPW system has been applied to the automotive engine valve production line and resulted in the great contribution to manpower saving.

Takeuchi, Y.; Nagata, M.

1985-01-01T23:59:59.000Z

345

Powder River Energy Corporation Smart Grid Project | Open Energy  

Open Energy Info (EERE)

Country United States Country United States Headquarters Location Sundance, Wyoming Recovery Act Funding $2,554,807.00 Total Project Value $5,109,614.00 Coverage Area Coverage Map: Powder River Energy Corporation Smart Grid Project Coordinates 44.4063746°, -104.3757816° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

346

Wood-Polymer composites obtained by gamma irradiation  

Science Conference Proceedings (OSTI)

In this work we impregnate three Peruvian woods (Calycophy spruceanum Be, Aniba amazonica Meiz and Hura crepitans L) with styrene-polyester resin and methyl methacrylate. The polymerization of the system was promoted by gamma radiation and the experimental optimal condition was obtained with styrene-polyester 1:1 and 15 kGy. The obtained composites show reduced water absorption and better mechanical properties compared to the original wood. The structure of the wood-polymer composites was studied by light microscopy. Water absorption and hardness were also obtained.

Gago, J. [Instituto Peruano de Energia Nuclear, Av. Canada 1470 Lima 41 (Peru); Lopez, A.; Rodriguez, J. [Instituto Peruano de Energia Nuclear, Av. Canada 1470 Lima 41 (Peru); Facultad de Ciencias, Universidad Nacional de Ingenieria, Av. Tupac Amaru 210, Lima 25 (Peru); Santiago, J. [Instituto Peruano de Energia Nuclear, Av. Canada 1470 Lima 41 (Peru); Facultad de Quimica e Ing. Quimica, Universidad Nacional Mayor de San Marcos, Lima 1 (Peru); Acevedo, M. [Facultad de Ciencias Forestales, Universidad Nacional Agraria la Molina, Lima 12 (Peru)

2007-10-26T23:59:59.000Z

347

Planar micro-direct methanol fuel cell prototyped by rapid powder blasting  

Science Conference Proceedings (OSTI)

We present a planar micro-direct methanol fuel cell (@m-DMFC) fabricated by rapid prototyping-powder blasting technology. Using an elastomeric mask, we pattern two parallel microfluidic channels in glass. The anode and cathode of the fuel cell are formed ... Keywords: Direct methanol fuel cell, Microchannel, Nafion, Powder blasting

M. Shen; S. Walter; L. Dovat; M. A. M. Gijs

2011-08-01T23:59:59.000Z

348

The improved technique of electric and magnetic parameters measurements of powdered materials  

Science Conference Proceedings (OSTI)

This paper presents the measurement technique that allows to determine the relative permittivity and permeability of powdered materials. Measurements are realized in a coaxial transmission line which guarantees the broad band frequency characterization. ... Keywords: Absorbing materials, Magnetic materials, Microwave measurements, Permittivity and permeability measurements, Powdered ferrite measurements, Scattering parameters

Roman Kubacki; Leszek Nowosielski; Rafa? Przesmycki

2011-11-01T23:59:59.000Z

349

ELSEVIER Physica B 239(1997)I-5 High temperature shock consolidation of hard ceramic powders  

E-Print Network (OSTI)

ELSEVIER Physica B 239(1997)I-5 High temperature shock consolidation of hard ceramic powders K conducted. Keywords: High pressure; High temperature; Shock waves; Shock consolidation of powders 1 of strong shock waves. The use of high temperature is expected to enhance plastic defor- mation and surface

Meyers, Marc A.

350

Sinterable ceramic powders from laser heated gas phase reactions and rapidly solidified ceramic materials : annual report.  

E-Print Network (OSTI)

CO[subscript 2] lasers have been employed to heat reactant gases to synthesize Si, Si[subscript 3] N[subscript 4] and SiC powders. The powders are small, uniform in size, nonagglomerated, highly pure and of controlled ...

Haggerty, John Scarseth

1984-01-01T23:59:59.000Z

351

Treatment of biomass to obtain a target chemical  

DOE Patents (OSTI)

Target chemicals were produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

Dunson, Jr., James B. (Newark, DE); Tucker, III, Melvin P. (Lakewood, CO); Elander, Richard T. (Evergreen, CO); Hennessey, Susan Marie (Avondale, PA)

2010-08-24T23:59:59.000Z

352

Obtaining and Using USDA Market and Production Reports  

E-Print Network (OSTI)

Producers who have superior information hold a distinct marketing advantage over those who do not. This publication lists various sources of marketing and production information and where to obtain them.

Bevers, Stan; Amosson, Stephen H.; Smith, Jackie; O'Brien, Daniel

2008-10-07T23:59:59.000Z

353

Causal Factors of Weld Porosity in Gas Tungsten Arc Welding of Powder Metallurgy Produced Titanium Alloys  

Science Conference Proceedings (OSTI)

ORNL undertook an investigation using gas tungsten arc (GTA) welding on consolidated powder metallurgy (PM) titanium (Ti) plate, to identify the causal factors behind observed porosity in fusion welding. Tramp element compounds of sodium and magnesium, residual from the metallothermic reduction of titanium chloride used to produce the titanium, were remnant in the starting powder and were identified as gas forming species. PM-titanium made from revert scrap where sodium and magnesium were absent, showed fusion weld porosity, although to a lesser degree. We show that porosity was attributable to hydrogen from adsorbed water on the surface of the powders prior to consolidation. The removal / minimization of both adsorbed water on the surface of titanium powder and the residues from the reduction process prior to consolidation of titanium powders, are critical to achieve equivalent fusion welding success similar to that seen in wrought titanium produced via the Kroll process.

Muth, Thomas R [ORNL; Yamamoto, Yukinori [ORNL; Frederick, David Alan [ORNL; Contescu, Cristian I [ORNL; Chen, Wei [ORNL; Lim, Yong Chae [ORNL; Peter, William H [ORNL; Feng, Zhili [ORNL

2013-01-01T23:59:59.000Z

354

Transparent yttrium aluminium garnet obtained by spark plasma sintering of lyophilized gels  

Science Conference Proceedings (OSTI)

Lyophilized YAG gel, synthesized by the coprecipitation technique, has been sintered to transparency by spark plasma sintering method at 1500C. Whereas conventionally dried gels show large agglomerates, over 1 m, powders from lyophilized ...

M. Surez; A. Fernndez; J. L. Menndez; R. Torrecillas

2009-01-01T23:59:59.000Z

355

Effect of prepartum protein restriction on brown adipose tissue thermogenic activity in newborn calves  

E-Print Network (OSTI)

Brown adipose tissue (BAT) thermogenesis was evaluated in Wagyu-sired calves from Angus heifers fed isocaloric diets with adequate (PA, 10%) or restricted (PR, 5.8%) dietary protein levels during the last 150 d of gestation. At 6 h of age, calves were placed in a warm-water indirect-calorimetry system to measure norepinephrine (NE) induced BAT thermogenisis. Calves were infused with NE (20 []g NE/kg BW/min for 10 min), and blood samples collected at birth, and at-5, 0, 20, 40, 60, 80, and 120 min after NE infusion for analysis of NEFA, glucose, urea nitrogen (BUN), cortisol, triiodothyronine (T3), and thyroxine (T4). Brown adipose tissue samples were collected at 12 h of age and analyzed for DNA, protein and lipid content. Protein-adequate heifers were 33% heavier (P < .001) and had higher (P < .001) body condition scores (5.9 vs 2.9) than PR heifers at calving. Protein-adequate heifers had higher (P < .05) BUN concentrations 1, 2, and 3 wks prepartum than PR heifers. Heifer cortisol concentrations were not affected by prepartum protein restriction; however, PR heifers had lower T3 concentrations three weeks prepartum and lower T4 concentrations at parturition than PA heifers. Prepartum protein restriction did not reduce calf birth weights (26.4 kg) or thermoneutral metabolic rates (TMR) which averaged 33.3 cal/kg/min. In support of these findings, visceral organ mass was similar for PA and PR calves. Peak metabolic rates (PMR), which averaged 66.2 cal/kg/min, as well as BAT weight and composition were not affected by prepartum protein restriction. Birth BUN levels were 1-fold higher (P <.01) in PA calves than PR calves. Plasma NEFA concentrations were 19% higher (P <.05) in PR calves 20 min after NE infusion. Average T3 concentrations at 6 h of age were 5 1 % higher (P < . 0 1) in PR compared to PA calves although T4 concentrations were similar. These results indicate that prepartum protein restriction did not affect thermoneutral or BAT thermogenesis in newborn calves. The relatively small birth weights of the calves used in this study may have accounted for the lack of a treatment affect on thermoneutral metabolism.

Taylor, Travis Lyn

1997-01-01T23:59:59.000Z

356

Nonnative Lizards Nile Monitor 4 to 6 ft. Brown/yellow body bands; forked black/blue tongue; long sharp claws  

E-Print Network (OSTI)

Constrictor 6 to 9 ft. Tan oval spots; reddish-brown tail Green Anaconda 13 to 15 ft. Green body; large, round, dark spots; eye stripes Yellow Anaconda 6 to 9 ft. Yellow body; large, dark spots; five dark stripes

Mazzotti, Frank

357

UKIDSS detections of cool brown dwarfs - proper motions of 14 known $>$T5 dwarfs and discovery of three new T5.5-T6 dwarfs  

E-Print Network (OSTI)

AIMS: We contribute to improving the census of cool brown dwarfs (late-T and Y dwarfs) in the immediate solar neighbourhood. METHODS: By combining near-infrared (NIR) data of UKIDSS with mid-infrared WISE and other available NIR (2MASS) and red optical (SDSS $z$-band) multi-epoch data we detect high proper motion (HPM) objects with colours typical of late spectral types ($>$T5). We use NIR low-resolution spectroscopy for the classification of new candidates. RESULTS: We determined new proper motions for 14 known T5.5-Y0 dwarfs, many of them being significantly ($>$2-10 times) more accurate than previous ones. We detected three new candidates, ULAS J0954+0623, ULAS J1152+0359, and ULAS J1204-0150, by their HPMs and colours. Using previously published and new UKIDSS positions of the known nearby T8 dwarf WISE J0254+0223 we improved its trigonometric parallax to 165$\\pm$20 mas. For the three new objects we obtained NIR spectroscopic follow-up with LBT/LUCIFER classifying them as T5.5 and T6 dwarfs. With their es...

Scholz, Ralf-Dieter; Schnurr, Olivier; Storm, Jesper

2012-01-01T23:59:59.000Z

358

Analysis of shipboard aerosol optical thickness measurements from multiple sunphotometers aboard the R/V Ronald H. Brown during the Aerosol Characterization Experiment - Asia  

SciTech Connect

Marine sunphotometer measurements collected aboard the R/V Ronald H. Brown during the Aerosol Characterization Experiment - Asia (ACE-Asia) are used to evaluate the ability of complementary instrumentation to obtain the best possible estimates of aerosol optical thickness and Angstrom exponent from ships at sea. A wide range of aerosol conditions, including clean maritime conditions and highly polluted coastal environments, were encountered during the ACE-Asia cruise. The results of this study suggest that shipboard hand-held sunphotometers and fast-rotating shadow-band radiometers (FRSRs) yield similar measurements and uncertainties if proper measurement protocols are used and if the instruments are properly calibrated. The automated FRSR has significantly better temporal resolution (2 min) than the hand-held sunphotometers when standard measurement protocols are used, so it more faithfully represents the variability of the local aerosol structure in polluted regions. Conversely, results suggest that the hand-held sunphotometers may perform better in clean, maritime air masses for unknown reasons. Results also show that the statistical distribution of the Angstrom exponent measurements is different when the distributions from hand-held sunphotometers are compared with those from the FRSR and that the differences may arise from a combination of factors.

Miller, Mark A.; Knobelspiesse, Kirk; Frouin, Robert; Bartholomew, Mary Jane; Reynolds, R. Michael; Pietras, Christophe; Fargion, Giulietta; Quinn, Patricia; Thieuleux, Francois

2005-06-20T23:59:59.000Z

359

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process  

DOE Patents (OSTI)

A process for the preparation of amorphous precursor powders for Pb-doped Bi{sub 2}Sr{sub 2} Ca{sub 2}Cu{sub 3}O{sub x} (2223) includes a freeze-drying process incorporating a splat-freezing step. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution without any phase separation; grinding the frozen flakes to form a powder; freeze-drying the frozen powder; heating the dried powder to form a dry green precursor powders; denitrating the green-powders; heating the denitrated powders to form phase-clean Bi-2223 powders. The grain boundaries of the 2223 grains appear to be clean, leading to good intergrain contact between 2223 grains. 11 figs.

Balachandran, U.

1996-06-04T23:59:59.000Z

360

Rapid formation of phase-clean 110 K (Bi-2223) powders derived via freeze-drying process  

DOE Patents (OSTI)

A process for the preparation of amorphous precursor powders for Pb-doped Bi.sub.2 Sr.sub.2 Ca.sub.2 Cu.sub.3 O.sub.x (2223) includes a freeze-drying process incorporating a splat-freezing step. The process generally includes splat freezing a nitrate solution of Bi, Pb, Sr, Ca, and Cu to form flakes of the solution without any phase separation; grinding the frozen flakes to form a powder; freeze-drying the frozen powder; heating the dried powder to form a dry green precursor powders; denitrating the green-powders; heating the denitrated powders to form phase-clean Bi-2223 powders. The grain boundaries of the 2223 grains appear to be clean, leading to good intergrain contact between 2223 grains.

Balachandran, Uthamalingam (Hinsdale, IL)

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment |  

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

Obtains Patent for Nuclear Reactor Sodium Cleanup Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment March 28, 2013 - 12:00pm Addthis CWI engineers Jeff Jones, David Tolman, right, and Kirk Dooley (seated) developed a treatment to safely dissolve a bicarbonate crust and treat and remove the sodium in the Experimental Breeder Reactor-II at the Idaho site. CWI engineers Jeff Jones, David Tolman, right, and Kirk Dooley (seated) developed a treatment to safely dissolve a bicarbonate crust and treat and remove the sodium in the Experimental Breeder Reactor-II at the Idaho site. Piping in the east boiler basement of the sodium processing building was color coded for easy identification. Orange indicates sodium and green identifies cooling water.

362

Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment |  

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

Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment Idaho Site Obtains Patent for Nuclear Reactor Sodium Cleanup Treatment March 28, 2013 - 12:00pm Addthis CWI engineers Jeff Jones, David Tolman, right, and Kirk Dooley (seated) developed a treatment to safely dissolve a bicarbonate crust and treat and remove the sodium in the Experimental Breeder Reactor-II at the Idaho site. CWI engineers Jeff Jones, David Tolman, right, and Kirk Dooley (seated) developed a treatment to safely dissolve a bicarbonate crust and treat and remove the sodium in the Experimental Breeder Reactor-II at the Idaho site. Piping in the east boiler basement of the sodium processing building was color coded for easy identification. Orange indicates sodium and green identifies cooling water.

363

Obtaining the Bidirectional Transfer Distribution Function of Isotropically  

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

Obtaining the Bidirectional Transfer Distribution Function of Isotropically Obtaining the Bidirectional Transfer Distribution Function of Isotropically Scattering Materials Using an Integrating Sphere Title Obtaining the Bidirectional Transfer Distribution Function of Isotropically Scattering Materials Using an Integrating Sphere Publication Type Journal Article LBNL Report Number LBNL-61826 Year of Publication 2007 Authors Jonsson, Jacob C., and Henrik Branden Journal Optics Communications Volume 277 Pagination 228-236 Call Number LBNL-61826 Abstract This paper demonstrates a method to determine the bidirectional transfer distribution function (BTDF) using an integrating sphere. Information about the sample's angle dependent scattering is obtained by making transmittance measurements with the sample at different distances from the integrating sphere. Knowledge about the illuminated area of the sample and the geometry of the sphere port in combination with the measured data combines to an system of equations that includes the angle dependent transmittance. The resulting system of equations is an ill-posed problem which rarely gives a physical solution. A solvable system is obtained by using Tikhonov regularization on the ill-posed problem. The solution to this system can then be used to obtain the BTDF. Four bulk-scattering samples were characterised using both two goniophotometers and the described method to verify the validity of the new method. The agreement shown is great for the more diffuse samples. The solution to the low-scattering samples contains unphysical oscillations, but still gives the correct shape of the solution. The origin of the oscillations and why they are more prominent in low-scattering samples are discussed.

364

BWRVIP-271NP: BWR Vessel and Internals Project, Testing and Evaluation of the Browns Ferry Unit 2 120 Capsule  

Science Conference Proceedings (OSTI)

In the late 1990s, a Boiling Water Reactor Vessel and Internals Project (BWRVIP) Integrated Surveillance Program (ISP) was developed to improve the surveillance of the U.S. BWR fleet. This report describes testing and evaluation of the Browns Ferry Unit 2 120 capsule. These results will be used to monitor embrittlement as part of the BWRVIP ISP.BackgroundThe BWRVIP ISP represents a major enhancement to the process of monitoring embrittlement for the U.S. ...

2013-04-03T23:59:59.000Z

365

Sintering Effects on Morphology, Thermal Stability and Surface Area of Sol-Gel Derived Nano-Hydroxyapatite Powder  

SciTech Connect

Hydroxyapatite (HAP) ceramics have been recognized as substitute materials for bone and teeth in orthopedic and dentistry field due to their chemical and biological similarity to human hard tissue. The nanosized and nanocrystalline forms of HAP have great potential to revolutionize the hard tissue-engineering field, starting from bone repair and augmentation to controlled drug delivery systems. This paper reports the synthesis of biomimetic nano-hydroxyapatite (HAP) by sol-gel method using calcium nitrate tetrahydrate (CNT) and potassium dihydrogen phosphate (KDP) as calcium and phosphorus precursors, respectively to obtain a desired Ca/P ratio of 1.67. Deionized water was used as a diluting media for HAP sol preparation and ammonia was used to adjust the pH to 11. After aging, the HAP gel was dried at 55 deg. C and sintered to different temperatures (200 deg. C, 400 deg. C, 600 deg. C, 800 deg. C, 1000 deg. C and 1200 deg. C). The dried and sintered powders were characterized for phase composition using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). The particle size and morphology was studied using transmission electron microscopy (TEM). The thermal behavior of the dried HAP nanopowder was studied in the temperature range of 55 deg. C to 1000 deg. C using thermal gravimetric analyser (TGA). The BET surface area of absorbance was determined by Nitrogen adsorption using Brunauer-Emmett-Teller (BET) method. The presence of characteristic peaks of the phosphate and OH groups in FTIR spectrums confirmed the formation of pure HAP in dried as well as sintered powders. XRD results also confirmed the formation of stoichiometric nano-HAP. Sintering revealed that with increase in temperature, both the crystallinity and crystallite size of nano-HAP particles increased. The synthesized nano-HAP powder was found to be stable upto 1000 deg. C without any additional phase other than HAP, whereas peak of {beta}-TCP (tricalcium phosphate) was observed at 1200 deg. C. Photomicrograph of TEM showed that the nanopowder sintered at 600 deg. C is composed of hydroxyapatite nanoparticles (26.0-45.6 nm), which is well in agreement with the crystallite size calculated using XRD data. TGA study showed the thermal stability of the synthesized nano-HAP powder. The BET surface area decreased with increase in sintering temperature.

Kapoor, Seema [University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh (India); Batra, Uma [Department of Materials and Metallurgical Engineering, PEC University of Technology, Chandigarh (India); Kohli, Suchita [University Institute of Chemical Engineering and Technology, Panjab University, Chd. (India)

2011-12-12T23:59:59.000Z

366

Standard Test Method for Particle Size Distribution of Alumina or Quartz Powders by Electrical Sensing Zone Technique  

E-Print Network (OSTI)

Standard Test Method for Particle Size Distribution of Alumina or Quartz Powders by Electrical Sensing Zone Technique

American Society for Testing and Materials. Philadelphia

1992-01-01T23:59:59.000Z

367

Evaluation of Marine Brown Algae and Sponges from Brazil as Anticoagulant and Antiplatelet Products  

E-Print Network (OSTI)

Abstract: The ischemic disorders, in which platelet aggregation and blood coagulation are involved, represent a major cause of disability and death worldwide. The antithrombotic therapy has unsatisfactory performance and may produce side effects. So, there is a need to seek molecules with antithrombotic properties. Marine organisms produce substances with different well defined ecological functions. Moreover, some of these molecules also exhibit pharmacological properties such as antiviral, anticancer, antiophidic and anticoagulant properties. The aim of this study was to evaluate, through in vitro tests, the effect of two extracts of brown algae and ten marine sponges from Brazil on platelet aggregation and blood coagulation. Our results revealed that most of the extracts were capable of inhibiting platelet aggregation and clotting measured by plasma recalcification tests, prothrombin time, activated partial thromboplastin time, and fibrinogenolytic activity. On the other hand, five of ten species of sponges induced platelet aggregation. Thus, the marine organisms studied here may have molecules with antithrombotic properties, presenting biotechnological potential to antithrombotic therapy. Further chemical investigation shouldMar. Drugs 2011, 9 1347

Laura De Andrade Moura; Fredy Ortiz-ramirez; Diana Negrao Cavalcanti; Suzi Meneses Ribeiro; Guilherme Muricy; Valeria Laneuville Teixeira; Andre Lopes Fuly

2011-01-01T23:59:59.000Z

368

Ionization in Atmospheres of Brown Dwarfs and Extrasolar Planets V: Alfv\\'{e}n Ionization  

E-Print Network (OSTI)

Observations of continuous radio and sporadic X-ray emission from low-mass objects suggest they harbour localized plasmas in their atmospheric environments. For low-mass objects, the degree of thermal ionization is insufficient to qualify the ionized component as a plasma, posing the question: what ionization processes can efficiently produce the required plasma that is the source of the radiation? We propose Alfv\\'{e}n ionization as a mechanism for producing localized pockets of ionized gas in the atmosphere, having sufficient degrees of ionization ($\\geq10^{-7}$) that they constitute plasmas. We outline the criteria required for Alfv\\'{e}n ionization and demonstrate it's applicability in the atmospheres of low-mass objects such as giant gas planets, brown dwarfs and M-dwarfs for both solar and sub-solar metallicities. We find that Alfv\\'{e}n ionization is most efficient at mid to low atmospheric pressures where a seed plasma is easier to magnetize and the pressure gradients needed to drive the required neut...

Stark, Craig R; Diver, Declan A; Rimmer, Paul B

2013-01-01T23:59:59.000Z

369

Small hydrocarbon molecules in cloud-forming Brown Dwarf and giant gas planet atmospheres  

E-Print Network (OSTI)

We study the abundances of complex carbon-bearing molecules in the oxygen-rich dust- forming atmospheres of Brown Dwarfs and giant gas planets. The inner atmospheric re- gions that form the inner boundary for thermochemical gas-phase models are investigated. Results from Drift-phoenix atmosphere simulations, which include the feedback of phase- non-equilibrium dust cloud formation on the atmospheric structure and the gas-phase abun- dances, are utilised. The resulting element depletion leads to a shift in the carbon-to-oxygen ratio such that several hydrocarbon molecules and cyanopolycyanopolyynene molecules can be present. An increase in surface gravity and/or a decrease in metallicity support the increase in the partial pressures of these species. CO, CO2, CH4, and HCN contain the largest fraction of carbon. In the upper atmosphere of low-metallicity objects, more carbon is contained in C4H than in CO, and also CH3 and C2H2 play an increasingly important role as carbon-sink. We determine chemical relaxation...

Bilger, Camille; Helling, Christiane

2013-01-01T23:59:59.000Z

370

The biological control of brown soft scale Coccus hesperidum L. (Homoptera: Coccidae) in interior plantscapes  

E-Print Network (OSTI)

Interior plantscape pests consist predominantly of a wide variety of species of Homoptera. Soft scale insects appear to account for one quarter to one third of all significant pest problems associated with interior plantscape environments. Brown soft scale, Coccus hesperidum L., is arguably the most common soft scale pest in these locations. The objective of this research project was to assess the potential for reducing C. hesperidum to non-pest status in interior plantscapes using the techniques of classical biological control. Improved methods for rearing C. hesperidum in the laboratory were developed using All Season" squash and Basalla alba, the Malabar spinach. More than a dozen species of encyrfid and aphelinid parasite species were reared from samples taken from naturally occurring California and Texas populations of C. hesperidum. Emerging parasites were screened for successful reproduction on Texas populations of C. hesperidum, and cultures of the most promising species were initiated. Metaphycus alberti (Howard) was chosen for further experimentation because it was found in low density populations in California, its eggs were not encapsulated by the Texas populations of C. hesperidum, it developed reliably, it was gregarious, it had a simple lifecycle, it had a short developmental time, and it was not present in Texas. Controlled comparison field trials using closed, open, and no sleeve treatments were conducted to measure the effect of release of M. alberti on the population dynamics of C.

Stauffer, Robert Stevens

1996-01-01T23:59:59.000Z

371

Analysis of superconducting magnetic energy storage applications at a proposed wind farm site near Browning, Montana  

DOE Green Energy (OSTI)

A computer program was developed to analyze the viability of integrating superconducting magnetic energy storage (SMES) with proposed wind farm scenarios at a site near Browning, Montana. The program simulated an hour-by-hour account of the charge/discharge history of a SMES unit for a representative wind-speed year. Effects of power output, storage capacity, and power conditioning capability on SMES performance characteristics were analyzed on a seasonal, diurnal, and hourly basis. The SMES unit was assumed to be charged during periods when power output of the wind resource exceeded its average value. Energy was discharged from the SMES unit into the grid during periods of low wind speed to compensate for below-average output of the wind resource. The option of using SMES to provide power continuity for a wind farm supplemented by combustion turbines was also investigated. Levelizing the annual output of large wind energy systems operating in the Blackfeet area of Montana was found to require a storage capacity too large to be economically viable. However, it appears that intermediate-sized SMES economically levelize the wind energy output on a seasonal basis.

Gaustad, K.L.; De Steese, J.G.

1993-07-01T23:59:59.000Z

372

New brown dwarfs in Upper Sco using UKIDSS Galactic Cluster Survey science verification data  

E-Print Network (OSTI)

We present first results from a deep (J = 18.7), wide-field (6.5 square degrees) infrared (ZYJHK) survey in the Upper Sco association conducted within the science verification phase of the UKIRT Infrared Deep Sky Survey Galactic Cluster Survey (GCS). Cluster members define a sequence well separated from field stars in the (Z-J,Z) colour-magnitude diagram. We have selected a total of 164 candidates with J = 10.5-18.7 mag from the (Z-J,Z) and (Y-J,Y) diagrams. We further investigated the location of those candidates in the other colour-magnitude and colour-colour diagrams to weed out contaminants. The cross-correlation of the GCS catalogue with the 2MASS database confirms the membership of 116 photometric candidates down to 20 Jupiter masses as they lie within a 2 sigma circle centred on the association mean motion. The final list of cluster members contains 129 sources with masses between 0.3 and 0.007 Msun. We extracted a dozen new low-mass brown dwarfs below 20 Mjup, the limit of previous surveys in the region. Finally, we have derived the mass function in Upper Sco over the 0.3-0.01 Msun mass range, best fit by a single segment with a slope of index alpha = 0.6+/-0.1, in agreement with previous determination in open clusters.

N. Lodieu; N. C. Hambly; R. F. Jameson; S. T. Hodgkin; G. Carraro; T. R. Kendall

2006-10-05T23:59:59.000Z

373

NEW BROWN DWARF COMPANIONS TO YOUNG STARS IN SCORPIUS-CENTAURUS  

Science Conference Proceedings (OSTI)

We present the discoveries of three faint companions to young stars in the Scorpius-Centaurus region, imaged with the NICI instrument on Gemini South. We have confirmed all three companions through common proper motion tests. Follow-up spectroscopy has confirmed two of them, HIP 65423 B and HIP 65517 B, to be brown dwarfs, while the third, HIP 72099 B, is more likely a very low mass star just above the hydrogen burning limit. The detection of wide companions in the mass range of {approx}40-100 M{sub jup} complements previous work in the same region, reporting detections of similarly wide companions with lower masses, in the range of {approx}10-30 M{sub jup}. Such low masses near the deuterium burning limit have raised the question of whether those objects formed like planets or stars. The existence of intermediate objects as reported here could represent a bridge between lower-mass companions and stellar companions, but in any case demonstrate that mass alone may not provide a clear-cut distinction for the formation of low-mass companions to stars.

Janson, Markus [Department of Astrophysical Sciences, Princeton University, Princeton, NJ (United States); Jayawardhana, Ray; Bonavita, Mariangela [Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON (Canada); Girard, Julien H. [European Southern Observatory, Santiago (Chile); Lafreniere, David [Department of Physics, University of Montreal, Montreal, QC (Canada); Gizis, John [Department of Physics and Astronomy, University of Delaware, Newark, DE (United States); Brandeker, Alexis, E-mail: janson@astro.princeton.edu [Department of Astronomy, Stockholm University, Stockholm (Sweden)

2012-10-10T23:59:59.000Z

374

Spitzer IRAC mid-infrared photometry of 500-750 brown dwarf  

SciTech Connect

Mid-infrared data, including Spitzer warm-IRAC [3.6] and [4.5] photometry, is critical for understanding the cold population of brown dwarfs now being found, objects which have more in common with planets than stars. As effective temperature (T{sub eff}) drops from 800K to 400K, the fraction of flux emitted beyond 3 {mu}m increases rapidly, from about 40% to > 75%. This rapid increase makes a color like H-[4.5] a very sensitive temperature indicator, and it can be combined with a gravity- and metallicity-sensitive color like H-K to constrain all three of these fundamental properties, which in turn gives us mass and age for these slowly cooling objects. Determination of mid-infrared color trends also allows better exploitation of the WISE mission by the community. We use new Spitzer Cycle 6 IRAC photometry, together with published data, to present trends of color with type for L0 to T10 dwarfs. We also use the atmospheric and evolutionary models of Saumon and Marley to investigate the masses and ages of 13 very late-type T dwarfs, which have H-[4.5] > 3.2 and T{sub eff} {approx} 500K to 750K.

Saumon, Didier [Los Alamos National Laboratory; Leggett, Sandy K [GEMINI OBSERVATORY; Albert, Loic [CFH TELESCOPE; Artigau, Etienne [U OF MONTREAL; Burningham, Ben [HERTFORDSHIRE U; Delfosse, Xavier [OBS. GRENOBLE; Delorme, Philippe [ST. ANDREWS U.; Forveille, Thierry [OBS. GRENOBLE; Lucas, Philip W [HERTFORDSHIRE U; Marley, Mark S [NASA AMES; Pinfield, David J [HERTFORDSHIRE U.; Reyle, Celine [OBS. BESANCON; Smart, Richard L [OSS. ASTRON, TORINO; Warren, Stephen J [IMPERIAL COLLEGE LONDON

2010-10-26T23:59:59.000Z

375

Low temperature fabrication from nano-size ceramic powders. Final report  

Science Conference Proceedings (OSTI)

Understanding of compaction and rheology of ceramic powders is needed for production of defect-free greenware. High pressure and lubricating media (liq. N{sub 2}, pentane) were used for increased green body density. High green densities could be achieved with nanosize Si nitride and {gamma} alumina. A pressure/temperature system was built which uses an Instron screw-driven press and a piston/cylinder die. Max random packing density of 57 {plus_minus} 2% theoretical was achieved for dry compaction of Si nitride at 2.5 GPa and RT; compaction under liq. N{sub 2} gave 64 {plus_minus} 2%. Dry compaction of alumina was 64% theoretical at 2.5 GPa. Pressureless sintering of Si nitride green compacts did not result in further densification. Hot pressing increased the hardness. In alumina, increased compaction pressure enhances the {gamma}-{alpha} transition and increases the densification upon heat treatment. It is difficult to obtain dense material without coarsened pore/grain microstructure. SANS showed alumina results similar to those found for materials made by inert-gas-condensation. Theoretical studies were also made to model the compaction process. Future studies are outlined.

Gonzalez, E.J.; Piermarini, G.J.; Hockey, B.; Malghan, S.G. [National Inst. of Standards and Technology (MSEL), Gaithersburg, MD (United States). Ceramics Div.; Danforth, S.C. [Rutgers Univ., Piscataway, NJ (United States); Pechenik, A. [AFOSR, Washington, DC (United States)

1995-04-28T23:59:59.000Z

376

Test report for cesium powder and pellets inner container decontamination method determination test  

SciTech Connect

This report documents the decontamination method determination testing that was performed on three cesium powder and pellets inner container test specimens The test specimens were provided by B and W Hanford Company (BVMC). The tests were conducted by the Numatec Hanford Company (NHC), in the 305 Building. Photographic evidence was also provided by NHC. The Test Plan and Test Report were provided by Waste Management Federal Services, Inc., Northwest Operations. Witnesses to testing included a test engineer, a BC project engineer, and a BC Quality Assurance (QA) representative. The Test Plan was modified with the mutual decision of the test engineer, the BWHC project engineer, and the BVMC QA representative. The results of this decision were written in red (permanent type) ink on the official copy of the test procedure, Due to the extent of the changes, a summary of the test results are provided in Section 3.0 of this Test Report. In addition, a copy of the official copy field documentation obtained during testing is included in Appendix A. The original Test Plan (HNF-2945) will be revised to indicate that extensive changes were required in the field during testing, however, the test documentation will stand as is (i.e., it will not be retyped, text shaded, etc.) due to the inclusion of the test parameters and results into this Test Report.

Kelly, D.L.

1998-08-17T23:59:59.000Z

377

Report on the development of the large-bore powder gun for the Nevada Test Site  

SciTech Connect

Experiments are needed to locate phase boundaries and to provide both Hugoniot data and off-Hugoniot data (such as principle isentrope, refreezing, dynamic strength, etc.) achieved through complex loading paths. The objective of the current work was to de- velop a large bore (3.5 inch or greater) powder gun capable of accelerating projectiles to moderately high velocities exceeding 2 km/s for impact experiments. A total of 24 ex- periments were performed to measure the projectile velocity, breech strain, and projectile tilt to demonstrate the performance of the gun up to the maximum breech capacity of 16 pounds of propellant. Physics experiments using a multislug method were performed to obtain sound speed and Hugoniot for shocked cerium metal and to demonstrate the ability of the large bore gun to conduct well-defined, plate-impact experiments. In addition, six experiments were performed on the prototype containment system to examine the ability of the launcher and containment system to withstand the impact event and contain the propellant gases and impact debris postshot. The data presented here were essential for qualification of the launcher for experiments to be conducted at the U1a complex of the Nevada Test Site.

B.J. Jensen

2009-03-01T23:59:59.000Z

378

METHOD FOR OBTAINING PLUTONIUM METAL FROM ITS TRICHLORIDE  

DOE Patents (OSTI)

A method was developed for obtaining plutonium metal by direct reduction of plutonium chloride, without the use of a booster, using calcium and lanthamum as a reductant, the said reduction being carried out at temperature in the range of 700 to 850 deg C and at about atmospheric pressure. (AEC)

Reavis, J.G.; Leary, J.A.; Maraman, W.J.

1962-08-14T23:59:59.000Z

379

Obtaining a bimodal grain size distribution via thermal means  

Science Conference Proceedings (OSTI)

Presentation Title, Obtaining a bimodal grain size distribution via thermal means ... manipulating thermal history, a family of bimodal grain size distributions may be formed. ... Mild Carbon Steel Quenche in Coconut Water, Fresh urine, Nigerian unadultrated up-wine, ... Multi-scale modeling of phase transformations in steels.

380

Method of making highly sinterable lanthanum chromite powder  

DOE Patents (OSTI)

A highly sinterable powder consisting essentially of LaCrO[sub 3], containing from 5 weight % to 20 weight % of a chromite of dopant Ca, Sr, Co, Ba, or Mg and a coating of a chromate of dopant Ca, Sr, Co, Ba, or Mg; is made by (1) forming a solution of La, Cr, and dopant; (2) heating their solutions; (3) forming a combined solution having a desired ratio of La, Cr, and dopant and heating to reduce solvent; (4) forming a foamed mass under vacuum; (5) burning off organic components and forming a charred material; (6) grinding the charred material; (7) heating the char at from 590 C to 950 C in inert gas containing up to 50,000 ppm O[sub 2] to provide high specific surface area particles; (8) adding that material to a mixture of a nitrate of Cr and dopant to form a slurry; (9) grinding the particles in the slurry; (10) freeze or spray drying the slurry to provide a coating of nitrates on the particles; and (11) heating the coated particles to convert the nitrate coating to a chromate coating and provide a highly sinterable material having a high specific surface area of over 7 m[sup 2]/g. 2 figs.

Richards, V.L.; Singhal, S.C.

1992-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Method of making highly sinterable lanthanum chromite powder  

DOE Patents (OSTI)

A highly sinterable powder consisting essentially of LaCrO.sub.3, containing from 5 weight % to 20 weight % of a chromite of dopant Ca, Sr, Co, Ba, or Mg and a coating of a chromate of dopant Ca, Sr, Co, Ba, or Mg; is made by (1) forming a solution of La, Cr, and dopant; (2) heating their solutions; (3) forming a combined solution having a desired ratio of La, Cr, and dopant and heating to reduce solvent; (4) forming a foamed mass under vacuum; (5) burning off organic components and forming a charred material; (6) grinding the charred material; (7) heating the char at from 590.degree. C. to 950 C. in inert gas containing up to 50,000 ppm O.sub.2 to provide high specific surface area particles; (8) adding that material to a mixture of a nitrate of Cr and dopant to form a slurry; (9) grinding the particles in the slurry; (10) freeze or spray drying the slurry to provide a coating of nitrates on the particles; and (11) heating the coated particles to convert the nitrate coating to a chromate coating and provide a highly sinterable material having a high specific surface area of over 7 m.sup.2 /g.

Richards, Von L. (Murrysville, PA); Singhal, Subhash C. (Murrysville, PA)

1992-01-01T23:59:59.000Z

382

Black/brown cooperation and conflict in the education policymaking process  

E-Print Network (OSTI)

The way race works to shape politics is changing as demographic patterns alter the traditional dynamic of race relations throughout the United States. One pattern is the increased tendency of African-Americans and Latinos to reside in the same locality. While popular opinion suggests that such contexts should result in the formation of â??rainbow coalitions,â? several scholars have found evidence that inter-minority relations are characterized by high levels of political competition. One of the policy areas in which competition has been observed most often is education. This dissertation examines the conditions under which African-American/Latino relations are likely to be characterized by cooperation or conflict within the education policymaking process. It utilizes a survey of 1800 school districts, containing 96% of all urban districts in the United States. The results produced by this study, therefore, are applicable to nearly the entire universe of urban educational systems. Another unique aspect of this project is that, rather than focusing on relations at one stage of the policy process, it attempts to trace this dynamic through each stage. Thus, the dissertation begins with a look at the circumstances under which Black/Brown electoral coalitions will form in school board elections. The findings suggest that coalition formation is contingent upon structural contexts, specifically the presence of partisan elections, and upon the citizenship status of the Latino population within a district. The dissertation goes on to trace the cooperative and competitive forces that affect the hiring of African- American and Latino administrators and teachers. Lastly, I use theories of bureaucratic politics and racial context to study the quality of education received by minority students. I find that, controlling for other factors, more diverse school districts have more equitable educational policies. I also find evidence to support the contention that more diverse teaching faculties tend to result in beneficial outcomes for both African- American and Latino students.

Rocha, Rene Rolando

2006-08-01T23:59:59.000Z

383

Supplemental Power for the town of Browning Waste-Water Treatment Facility  

Science Conference Proceedings (OSTI)

This final report is issued for the "Supplemental power for the Town of Browning waste-water treatment facility" under the Field Verification Program for Small Wind Turbines Grant. The grant application was submitted on April 16, 1999 wherein the full description of this project is outlined. The project was initially designed to test the Bergy small wind turbines, 10 kW, applicability to residential and commercial applications. The objectives of the project were the following: 1. To verify the performance of the BWC Excel-S/E model wind turbine in an operational application in the fierce winds and severe weather conditions of the Class V winds of the Blackfeet Indian Reservation of Northern Montana. 2. To open up the Blackfeet reservation and northern Montana, to government sponsored, regionally distributed wind generation programs. 3. To examine the natural partnership of wind/electric with water pumping and water purification applications whose requirements parallel the variably available nature of energy produced by wind. 4. To provide data and hands-on experience to citizens, scientists, political leaders, utility operators and Tribal planners with regard to the potential uses of small-capacity, distributed-array wind turbines on the Blackfeet Reservation and in other areas of northern Montana. This project has not been without a few, which were worked out and at the time of this report continue to be worked on with the installation of two new Trace Technologies invertors and a rebuilt one with new technology inside. For the most part when the system has worked it produced power that was used within the wastewater system as was the purpose of this project.

William Morris; Dennis Fitzpatrick

2005-12-20T23:59:59.000Z

384

Late Paleocene paleoenvironmental gradients in Wilcox Group strata, Big Brown Mine, Texas  

E-Print Network (OSTI)

The Wilcox Group in Texas has been recognized as an important oil and gas reservoir for much of this century, and for the last 30 years has been commercially mined for its extensive shallow lignitic coals. More recently, exploration for coalbed methane in the Gulf Coast has focused in this area. For this new play to become successful, more information on the stratigraphy and depositional environments of the Wilcox Group is needed. The Wilcox Group in the Gulf Coast has been interpreted as primarily fluvial-deltaic in origin; however, since the 1980s, much evidence for tidal control on the deposition of the upper Wilcox (Calvert Bluff Formation) has been compiled. New data from the examination of sediments and fossils contained in the upper Wilcox Calvert Bluff Formation in and near the Texas Utilities' Big Brown Mine confirm that significant marine influence was present at the time of deposition. Most fine-grained sediments contain flaser, rippled, and laminated bedding, and palynological assemblages from non-coal sediments commonly contain Paleocene-Eocene marine dinoflagellates as well as brackish-water indicator palynomorphs. Sand deposits also contain marine dinoflagellates and are in gradational contact with underlying fine-grained sediments. Channel-fill deposits present in the mine area are similar to known examples of tidal flat and estuarine channels. These features indicate that brackish to marine conditions existed during much of the deposition of the upper Wilcox Group in northeastern Texas. The presence of non-fluvial-deltaic deposition in the upper Wilcox Group has implications for the location and extent of the coals, which will aid in the location of coalbed methane reservoirs.

Klein, Jennifer Marie

2000-01-01T23:59:59.000Z

385

DOE - Office of Legacy Management -- Tyson Valley Powder Farm - MO 11  

Office of Legacy Management (LM)

Tyson Valley Powder Farm - MO 11 Tyson Valley Powder Farm - MO 11 FUSRAP Considered Sites Site: TYSON VALLEY POWDER FARM (MO.11) Eliminated from further consideration under FUSRAP Designated Name: Not Designated Alternate Name: None Location: St. Louis County , Missouri MO.11-1 Evaluation Year: 1987 MO.11-2 Site Operations: Storage of C-Special material (residue from production of uranium metal). MO.11-1 MO.11-2 MO.11-3 Site Disposition: Eliminated - Referred to Army Corps of Engineers MO.11-2 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Uranium MO.11-3 Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP Also see Documents Related to TYSON VALLEY POWDER FARM MO.11-1 - Letter; Dickenson to Duff; Subject: Granted continued use

386

Reactivity of Ti2AlC with SiC Fibers and Powders up to ...  

Science Conference Proceedings (OSTI)

Herein we investigated the reactivity of Ti2AlC [3ONE2] with SiC fibers [Avco Specialty Materials and Nippon Carbon Co.] and fine SiC powders [Superior...

387

Gas atomized precursor alloy powder for oxide dispersion strengthened ferritic stainless steel.  

E-Print Network (OSTI)

??Gas atomization reaction synthesis (GARS) was employed as a simplified method for producing precursor powders for oxide dispersion strengthened (ODS) ferritic stainless steels (e.g., Fe-Cr-Y-(Ti,Hf)-O), (more)

Rieken, Joel Rodney

2011-01-01T23:59:59.000Z

388

Study of Free-Fluoride Mold Powder Based on Titanium-Bearing ...  

Science Conference Proceedings (OSTI)

Sep 1, 2004 ... Study of Free-Fluoride Mold Powder Based on Titanium-Bearing Blast Furnace Slag by G.H. Wen, P. Tang, L. Zhang, Y. Liu, and S. Miao...

389

Test data for the calculation of powder paterns for intermetallic phases  

Science Conference Proceedings (OSTI)

Powder diffraction patterns are often calculated from structural parameters to assist in the identification of materials. To ensure that powder pattern calculations are correct, it is useful to have data to test the computer program doing the calculations. this paper contains test data for each of the crystallographic point groups and 63 of the 230 space groups. An important feature of the data is that many tests involve two high-symmetry structures (sodium and magnesium) that are set in successively lower-symmetry space groups. Thus, the calculated powder intensities for sodium, for example, are identical whatever the setting is. Though the data were chosen to be especially useful for the calculation of the powder patterns of metals and intermetallic compounds, the data have wider utility.

Calvert, L.D.; Mueller, M.H. [ (deceased); Wallace, P.L. [Los Alamos National Lab., NM (United States); Huang, J.A. [San Jose, CA (United States); Kaduk, J.A. [Amoco Research Center, Naperville, Il (United States); Dann, J.N. [Osram Sylvania, Inc., Towanda, PA (United States); Roberts, A.C [Geological Survey of Canada, Ottawa, Ontario (Canada)

1996-09-01T23:59:59.000Z

390

Underwater Explosive Shock Consolidation of Nanocomposite Pr2Fe14B/-Fe Magnetic Powders  

E-Print Network (OSTI)

PR O O FS Underwater Explosive Shock Consolidation of Nanocomposite Pr2Fe14B/-Fe Magnetic Powders; Accepted January 6, 2005) Keywords: explosive compaction, underwater shock wave, nanocomposites, magnetic

Liu, J. Ping

391

Combustion of Bulk 84% Fe/16% KCIO{sub 4} heat powder  

DOE Green Energy (OSTI)

Fe/KClO{sub 4} pyrotechnic mixtures are used in thermal batteries to provide the heat necessary to bring the battery stack to operating temperatures of 550 to 600 C. This heat source is normally used as discs pressed from bulk powder. To evaluate the consequences associated with unexpected ignition of large amounts of heat powder, combustion of 84% Fe/16% KClO{sub 4} heat powders was conducted for various scenarios under controlled conditions and the response documented. Increasing amounts of heat powder--up to 8 lbs--were ignited in both unconfined and confined (sealed) containers in a remote area. The containers were thermocoupled and the resulting burning filmed with a standard video camera, high-speed (1,000 frames/s) film and video cameras, and an infrared video camera. A 20- minute video of the burning under the various conditions is presented.

Nissen, M.; Guidotti, R.A.; Berry, B.

1996-05-01T23:59:59.000Z

392

Effect of Cryogenic Milling on the Properties of Fe-14Cr ODS Powder  

Science Conference Proceedings (OSTI)

Generally, ODS steel is produced by high energy ball milling process in order to ... The mixture of Fe and Y2O3 powder was ball milled for 10 hours at room...

393

The Phase Transformation of Al2O3/Mg Nanocomposite Powders ...  

Science Conference Proceedings (OSTI)

The nanocomposite powders are synthesized by high-energy ball milling in the argon gas. First, 70 vol.% Mg and 30 vol.% Al2O3 nanoparticles are mixed...

394

Copper-base alloy for liquid phase sintering of ferrous powders  

DOE Patents (OSTI)

A copper-base alloy composition consisting essentially of 85 - 89% copper, 2 - 4% manganese, and 8 - 11% silicon and use of same in liquid phase sintering of ferrous powders.

Wang, John L. (San Francisco, CA); Pickus, Milton R. (Oakland, CA); Chen, Meng-Hsiu (San Francisco, CA)

1978-01-01T23:59:59.000Z

395

Temperature and TimeResolved XRay Powder Diffraction X14A EERE sponsored PRT beamline  

E-Print Network (OSTI)

Temperature and TimeResolved XRay Powder Diffraction X14A EERE sponsored PRT beamline Objective, in ambience or with gas flow Capabilities: X14A, EERE-sponsored PRT beamline · High photon flux: typically 9x

Homes, Christopher C.

396

Posters Comparisons of Brightness Temperature Measurements and Calculations Obtained  

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

Posters Comparisons of Brightness Temperature Measurements and Calculations Obtained During the Spectral Radiance Experiment Y. Han, J. B. Snider, and E. R. Westwater National Oceanic and Atmospheric Administration Environmental Research Laboratories/Environmental Technology Laboratory Boulder, Colorado S. H. Melfi National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland R. A. Ferrare Hughes STX Corporation Lanham, Maryland Introduction In radiometric remote sensing of the atmosphere, the ability to calculate radiances from underlying state variables is fundamental. To infer temperature and water vapor profiles from satellite- or ground-based radiometers, one must determine cloud-free regions and then calculate clear-sky radiance emerging from the top of the earth's

397

Powder River Basin Coal Supply and Suitability: EPRI Report Series on Low-Sulfur Coal Supplies  

Science Conference Proceedings (OSTI)

Utility use of subbituminous coals from the Powder River Basin is expected to increase 100 million tons by the year 2000, with much of the growth coming from units designed for high-sulfur bituminous coal. This report addresses whether Powder River Basin coal suppliers will be able to command a premium for their product and documents the recent and rapid improvements utilities have made in using subbituminous coals.

1992-12-01T23:59:59.000Z

398

Thermal conductivity of $sup 238$PuO$sub 2$ powder, intermediates, and dense fuel forms  

SciTech Connect

The thermal conductivities of porous $sup 238$PuO$sub 2$ powder (calcined oxalate), milled powder, and high-density granules were calculated from direct measurements of steady-state temperature profiles resulting from self- heating. Thermal conductivities varied with density, temperature, and gas content of the pores. Errors caused by thermocouple heat conduction were less than 5 percent when the dimensions of the thermal conductivity cell and the thermocouple were properly selected. (auth)

Bickford, D.F.; Crain, B. Jr.

1975-10-01T23:59:59.000Z

399

Powder diffraction in materials science using the KENS cold-neutron source  

SciTech Connect

Since superconductivity fever spread around the world, neutron powder diffraction has become very popular and been widely used by crystallographers, physicists, chemists, mineralogists, and materials scientists. The purpose of present paper is to show, firstly, important characteristics of time-of-flight TOF powder diffraction using cold-neutron source in the study of materials science, and, secondly, recent studies on the structure and function of batteries at the Neutron Science Laboratory (KENS) in the High Energy Accelerator Research Organization (KEK).

Kamiyama, T.; Oikawa, K. [Univ. of Tsukuba (Japan). Inst. of Materials Science; Akiba, E. [National Inst. of Materials and Chemical Research, Tsukuba (Japan)] [and others

1997-12-01T23:59:59.000Z

400

Hybrid nuclear reactor grey rod to obtain required reactivity worth  

DOE Patents (OSTI)

Hybrid nuclear reactor grey rods are described, wherein geometric combinations of relatively weak neutron absorber materials such as stainless steel, zirconium or INCONEL, and relatively strong neutron absorber materials, such as hafnium, silver-indium cadmium and boron carbide, are used to obtain the reactivity worths required to reach zero boron change load follow. One embodiment includes a grey rod which has combinations of weak and strong neutron absorber pellets in a stainless steel cladding. The respective pellets can be of differing heights. A second embodiment includes a grey rod with a relatively thick stainless steel cladding receiving relatively strong neutron absorber pellets only. A third embodiment includes annular relatively weak netron absorber pellets with a smaller diameter pellet of relatively strong absorber material contained within the aperture of each relatively weak absorber pellet. The fourth embodiment includes pellets made of a homogeneous alloy of hafnium and a relatively weak absorber material, with the percentage of hafnium chosen to obtain the desired reactivity worth.

Miller, John V. (Munhall, PA); Carlson, William R. (Scott Township, Allegheny County, PA); Yarbrough, Michael B. (Hempfield Township, Westmoreland County, PA)

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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

Preparation of powders suitable for conversion to useful .beta.-aluminas  

DOE Patents (OSTI)

A process for forming a precursor powder which, when suitably pressed and sintered forms highly pure, densified .beta.- or .beta."-alumina, comprising the steps of: (1) forming a suspension (or slurry) of Bayer-derived Al(OH).sub.3 in a water-miscible solvent; (2) adding an aqueous solution of a Mg compound, a Li compound, a Na compound or mixtures thereof to the Bayer-derived Al(OH).sub.3 suspension while agitating the mixture formed thereby, to produce a gel; (3) drying the gel at a temperature above the normal boiling point of water to produce a powder material; (4) lightly ball milling and sieving said powder material; and (5) heating the ball-milled and sieved powder material at a temperature of between 350.degree. to 900.degree. C. to form the .beta.- or .beta."-alumina precursor powder. The precursor powder, thus formed, may be subsequently isopressed at a high pressure and sintered at an elevated temperature to produce .beta.- or .beta."-alumina. BACKGROUND OF THE INVENTION

Morgan, Peter E. D. (Thousand Oaks, CA)

1982-01-01T23:59:59.000Z

402

Fuel Reliability Program: Hot Cell Investigation and Assessment of GE14 Failures in Browns Ferry Unit 3  

Science Conference Proceedings (OSTI)

Browns Ferry 3 Cycle 12 began operation in April 2004, but on July 19, 2004, an off-gas radiation monitor increase and subsequent grab sample confirmed the presence of failures in two second-cycle GE14 (10 x 10) bundles. The failures coincided with power changes during a control rod sequence exchange; however, local rod power and the change in rod power levels were well below design limits and operating experience from another GE14 failure in Hatch Unit 1 (described in Electric Power Research Institute [...

2010-09-01T23:59:59.000Z

403

Fuel Reliability Program: Post-Irradiation Examination and Performance Assessment of ATRIUM-10 BWR Fuel from Browns Ferry-3 Reactor  

Science Conference Proceedings (OSTI)

ATRIUM-10 design (10x10 lattice) fuel was irradiated for one 24-month period during Cycle 12 to 25 MWd/kgU rod-average exposure at Tennessee Valley Authority's Browns Ferry Unit 3 reactor. The project goal was to characterize the behavior of modern boiling water reactor (BWR) fuel at low exposures to assess early-life performance in a well-documented reactor environment. This report includes results from hot cell post-irradiation examinations. In a future Electric Power Research Institute (EPRI) report, ...

2011-06-09T23:59:59.000Z

404

Thermal evolution behavior of carbides and {gamma} Prime precipitates in FGH96 superalloy powder  

SciTech Connect

The characteristics of rapidly solidified FGH96 superalloy powder and the thermal evolution behavior of carbides and {gamma} Prime precipitates within powder particles were investigated. It was observed that the reduction of powder size and the increase of cooling rate had transformed the solidification morphologies of atomized powder from dendrite in major to cellular structure. The secondary dendritic spacing was measured to be 1.02-2.55 {mu}m and the corresponding cooling rates were estimated to be in the range of 1.4 Multiplication-Sign 10{sup 4}-4.7 Multiplication-Sign 10{sup 5} K{center_dot}s{sup -1}. An increase in the annealing temperature had rendered the phase transformation of carbides evolving from non-equilibrium MC Prime carbides to intermediate transition stage of M{sub 23}C{sub 6} carbides, and finally to thermodynamically stable MC carbides. The superfine {gamma} Prime precipitates were formed at the dendritic boundaries of rapidly solidified superalloy powder. The coalescence, growth, and homogenization of {gamma}' precipitates occurred with increasing annealing temperature. With decreasing cooling rate from 650 Degree-Sign C{center_dot}K{sup -1} to 5 Degree-Sign C{center_dot}K{sup -1}, the morphological development of {gamma} Prime precipitates had been shown to proceed from spheroidal to cuboidal and finally to solid state dendrites. Meanwhile, a shift had been observed from dendritic morphology to recrystallized structure between 900 Degree-Sign C and 1050 Degree-Sign C. Moreover, accelerated evolution of carbides and {gamma}' precipitates had been facilitated by the formation of new grain boundaries which provide fast diffusion path for atomic elements. - Highlights: Black-Right-Pointing-Pointer Microstructural characteristic of FGH96 superalloy powder was investigated. Black-Right-Pointing-Pointer The relation between microstructure, particle size, and cooling rate was studied. Black-Right-Pointing-Pointer Thermal evolution behavior of {gamma} Prime and carbides in loose FGH96 powder was studied.

Zhang Lin, E-mail: zhanglincsu@163.com [State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing, 100083 (China); Liu Hengsan, E-mail: lhsj63@sohu.com [State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing, 100083 (China); He Xinbo, E-mail: xb_he@163.com [State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing, 100083 (China); Rafi-ud-din, E-mail: rafiuddi@gmail.com [State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing, 100083 (China); Qu Xuanhui, E-mail: quxh@ustb.edu.cn [State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing, 100083 (China); Qin Mingli, E-mail: mlqin75@hotmail.com [State Key Laboratory for Advanced Metals and Materials, Beijing Key Laboratory for Powder Metallurgy and Particulate Materials, University of Science and Technology Beijing, Beijing, 100083 (China); Li Zhou, E-mail: zhouli621@126.com [National Key Lab of High Temperature Structural Materials, Beijing Institute of Aeronautical Materials, Beijing, 100095 (China); Zhang Guoqing, E-mail: g.zhang@126.com [National Key Lab of High Temperature Structural Materials, Beijing Institute of Aeronautical Materials, Beijing, 100095 (China)

2012-05-15T23:59:59.000Z

405

Enery Efficient Press and Sinter of Titanium Powder for Low-Cost Components in Vehicle Applications  

SciTech Connect

This is the final technical report for the Department of Energy NETL project NT01931 Energy Efficient Press and Sinter of Titanium Powder for Low-Cost Components in Vehicle Applications. Titanium has been identified as one of the key materials with the required strength that can reduce the weight of automotive components and thereby reduce fuel consumption. Working with newly developed sources of titanium powder, Webster-Hoff will develop the processing technology to manufacture low cost vehicle components using the single press/single sinter techniques developed for iron based powder metallurgy today. Working with an automotive or truck manufacturer, Webster-Hoff will demonstrate the feasibility of manufacturing a press and sinter titanium component for a vehicle application. The project objective is two-fold, to develop the technology for manufacturing press and sinter titanium components, and to demonstrate the feasibility of producing a titanium component for a vehicle application. The lowest cost method for converting metal powder into a net shape part is the Powder Metallurgy Press and Sinter Process. The method involves compaction of the metal powder in a tool (usually a die and punches, upper and lower) at a high pressure (up to 60 TSI or 827 MPa) to form a green compact with the net shape of the final component. The powder in the green compact is held together by the compression bonds between the powder particles. The sinter process then converts the green compact to a metallurgically bonded net shape part through the process of solid state diffusion. The goal of this project is to expand the understanding and application of press and sinter technology to Titanium Powder applications, developing techniques to manufacture net shape Titanium components via the press and sinter process. In addition, working with a vehicle manufacturer, demonstrate the feasibility of producing a titanium component for a vehicle. This is not a research program, but rather a project to develop a process for press and sinter of net shape Titanium components. All of these project objectives have been successfully completed.

Thomas Zwitter; Phillip Nash; Xiaoyan Xu; Chadwick Johnson

2011-03-31T23:59:59.000Z

406

2MASS J035523.37+113343.7: A YOUNG, DUSTY, NEARBY, ISOLATED BROWN DWARF RESEMBLING A GIANT EXOPLANET  

SciTech Connect

We present parallax and proper motion measurements, near-infrared spectra, and Wide-field Infrared Survey Explorer photometry for the low surface gravity L5{gamma} dwarf 2MASS J035523.37+113343.7 (2M0355). We use these data to evaluate photometric, spectral, and kinematic signatures of youth as 2M0355 is the reddest isolated L dwarf yet classified. We confirm its low-gravity spectral morphology and find a strong resemblance to the sharp triangular shaped H-band spectrum of the {approx}10 Myr planetary-mass object 2M1207b. We find that 2M0355 is underluminous compared to a normal field L5 dwarf in the optical and Mauna Kea Observatory J, H, and K bands and transitions to being overluminous from 3 to 12 {mu}m, indicating that enhanced photospheric dust shifts flux to longer wavelengths for young, low-gravity objects, creating a red spectral energy distribution. Investigating the near-infrared color-magnitude diagram for brown dwarfs confirms that 2M0355 is redder and underluminous compared to the known brown dwarf population, similar to the peculiarities of directly imaged exoplanets 2M1207b and HR8799bcd. We calculate UVW space velocities and find that the motion of 2M0355 is consistent with young disk objects (<2-3 Gyr) and it shows a high likelihood of membership in the AB Doradus association.

Faherty, Jacqueline K. [Department of Astronomy, Universidad de Chile Cerro Calan, Las Condes (Chile); Rice, Emily L.; Cruz, Kelle L.; Nunez, Alejandro [Department of Astrophysics , American Museum of Natural History, Central Park West at 79th Street, New York, NY 10034 (United States); Mamajek, Eric E., E-mail: jfaherty17@gmail.com, E-mail: jfaherty@amnh.org [Cerro Tololo Inter-American Observatory, Casilla 603, La Serena (Chile)

2013-01-01T23:59:59.000Z

407

A Cautionary Tale: MARVELS Brown Dwarf Candidate Reveals Itself To Be A Very Long Period, Highly Eccentric Spectroscopic Stellar Binary  

E-Print Network (OSTI)

We report the discovery of a highly eccentric, double-lined spectroscopic binary star system (TYC 3010-1494-1), comprising two solar-type stars that we had initially identified as a single star with a brown dwarf companion. At the moderate resolving power of the MARVELS spectrograph and the spectrographs used for subsequent radial-velocity (RV) measurements (R ~ <30,000), this particular stellar binary mimics a single-lined binary with an RV signal that would be induced by a brown dwarf companion (Msin(i)~50 M_Jup) to a solar-type primary. At least three properties of this system allow it to masquerade as a single star with a very low-mass companion: its large eccentricity (e~0.8), its relatively long period (P~238 days), and the approximately perpendicular orientation of the semi-major axis with respect to the line of sight (omega~189 degrees). As a result of these properties, for ~95% of the orbit the two sets of stellar spectral lines are completely blended, and the RV measurements based on centroiding ...

Mack, Claude E; Deshpande, Rohit; Wisniewski, John P; Stassun, Keivan G; Gaudi, B Scott; Fleming, Scott W; Mahadevan, Suvrath; De Lee, Nathan; Eastman, Jason; Ghezzi, Luan; Hernandez, Jonay I Gonzalez; Femenia, Bruno; Ferreira, Leticia; de Mello, Gustavo Porto; Crepp, Justin R; Sanchez, Daniel Mata; Agol, Eric; Beatty, Thomas G; Bizyaev, Dmitry; Brewington, Howard; Cargile, Phillip A; da Costa, Luiz N; Esposito, Massimiliano; Ebelke, Garret; Hebb, Leslie; Jiang, Peng; Kane, Stephen R; Lee, Brian; Maia, Marcio A G; Malanushenko, Elena; Malanushenko, Victor; Oravetz, Daniel; Paegert, Martin; Pan, Kaike; Prieto, Carlos Allende; Peper, Joshua; Rebolo, Rafael; Roy, Arpita; Santiago, Basilio X; Schneider, Donald P; Simmons, Audrey; Siverd, Robert J; Snedden, Stephanie; Tofflemire, Benjamin M

2013-01-01T23:59:59.000Z

408

LASER Powder Deposition of AlMgB14-TiB2 Ultra-Hard Coatings on ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2012 TMS Annual Meeting & Exhibition. Symposium , Randall M. German Honorary Symposium on Sintering and Powder-Based...

409

Structural Studies of Al:ZnO Powders and Thin Films | Stanford Synchrotron  

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

Structural Studies of Al:ZnO Powders and Thin Films Structural Studies of Al:ZnO Powders and Thin Films Monday, June 18, 2012 - 2:00pm SSRL Main Conference Room 137-322 Dr. Bridget Ingham, Associate Investigator, MacDiarmid Institute for Advanced Materials & Nanotechnology Al-doped ZnO (Al:ZnO) is a promising transparent conducting oxide. We have used complementary synchrotron and laboratory techniques to study the incorporation of Al within the ZnO lattice, and measure its effect on the crystallinity of thin films prepared by sol-gel techniques, with an aim to understand how these properties affect the film conductivity. I will present recent results from Al:ZnO powders and thin films, prepared with varying Al concentrations and calcination temperatures. Solid state 27Al NMR and ex situ X-ray diffraction (XRD) were performed on Al:ZnO

410

MODELING POWDERED SORBENT INJECTION IN COMBINATION WITHE FABRIC FILTER FOR THE CONTROL OF MERCURY EMISSIONS  

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

POWDERED SORBENT INJECTION IN POWDERED SORBENT INJECTION IN COMBINATION WITH FABRIC FILTER FOR THE CONTROL OF MERCURY EMISSIONS Joseph R. V. Flora Department of Civil and Environmental Engineering University of South Carolina, Columbia, SC 29208 Richard A. Hargis, William J. O'Dowd, Henry W. Pennline National Energy Technology Laboratory, U.S. Department of Energy P.O. Box, 10940, Pittsburgh, PA 15236 Radisav D. Vidic * Department of Civil and Environmental Engineering University of Pittsburgh, Pittsburgh, PA 15261 ABSTRACT A two-stage mathematical model for mercury removal using powdered activated carbon injection upstream of a baghouse filter was developed, with the first stage accounting for removal in the ductwork and the second stage accounting for additional removal due to the

411

Characterization of the properties of thermoplastic elastomers containing waste rubber tire powder  

Science Conference Proceedings (OSTI)

The aim of this research was to recycle waste rubber tires by using powdering technology and treating the waste rubber tire powder with bitumen. It has been proven that the elongation at break, thermal stability and processing flowability of composites of polypropylene (PP), waste rubber tire powder (WRT) and bitumen composites are better than those of PP/WRT composite. A comparative study has been made to evaluate the influence of bitumen content and different compatibilizers on the properties of PP/WRT/bitumen composites, using a universal testing machine (UTM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and a capillary rheometer. The results suggested that the properties of PP/WRT/bitumen composites were dependent on the bitumen content and the kind of compatibilizer used.

Zhang Shuling [School of Nano and Advanced Materials Engineering, Gyeongsang National University, Gyeongnam, Jinju 660-701 (Korea, Republic of); Alan G. MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012 (China); Xin Zhenxiang [School of Nano and Advanced Materials Engineering, Gyeongsang National University, Gyeongnam, Jinju 660-701 (Korea, Republic of); Key Laboratory of Rubber-Plastics Qingdao University of Science and Technology and Ministry of Education, Qingdao 266042 (China); Zhang Zhenxiu [School of Nano and Advanced Materials Engineering, Gyeongsang National University, Gyeongnam, Jinju 660-701 (Korea, Republic of); Kim, Jin Kuk [School of Nano and Advanced Materials Engineering, Gyeongsang National University, Gyeongnam, Jinju 660-701 (Korea, Republic of)], E-mail: rubber@gsnu.ac.kr

2009-05-15T23:59:59.000Z

412

Plasma Treatment of Polyethylene Powder Particles in Hollow Cathode Glow Discharge  

Science Conference Proceedings (OSTI)

Polyethylen (PE) is widely used in the production of foils, insulators, packaging materials, plastic bottles etc. Untreated PE is hydrophobic due to its unpolar surface. Therefore, it is hard to print or glue PE and the surface has to be modified before converting.In the present experiments a hollow cathode glow discharge is used as plasma source which is mounted in a spiral conveyor in order to ensure a combines transport of PE powder particles. With this set-up a homogeneous surface treatment of the powder is possible while passing the glow discharge. The plasma treatment causes a remarkable enhancement of the hydrophilicity of the PE powder which can be verified by contact angle measurements and X-ray photoelectron spectroscopy.

Wolter, Matthias; Quitzau, Meike; Bornholdt, Sven; Kersten, Holger [IEAP, University Kiel, Kiel (Germany)

2008-09-07T23:59:59.000Z

413

Comparison of NDA and DA measurement techniques for excess plutonium powders at the Hanford Site: Statistical design and heterogeneity testing  

SciTech Connect

Quantitative physical measurements are a n component of the International Atomic Energy Agency (IAEA) nuclear material m&guards verification regime. In December 1994, LA.FA safeguards were initiated on an inventory of excess plutonium powder items at the Plutonium Finishing Plant, Vault 3, on the US Department of Energy`s Hanford Site. The material originl from the US nuclear weapons complex. The diversity of the chemical form and the heterogenous physical form of this inventory were anticipated to challenge the precision and accuracy of quantitative destructive analytical techniques. A sampling design was used to estimate the degree of heterogeneity of the plutonium content of a variety of inventory items. Plutonium concentration, the item net weight, and the {sup 240}Pu content were among the variables considered in the design. Samples were obtained from randomly selected location within each item. Each sample was divided into aliquots and analyzed chemically. Operator measurements by calorimetry and IAEA measurements by coincident neutron nondestructive analysis also were performed for the initial physical inventory verification materials and similar items not yet under IAEA safeguards. The heterogeneity testing has confirmed that part of the material is indeed significantly heterogeneous; this means that precautionary measures must be taken to obtain representative samples for destructive analysis. In addition, the sampling variability due to material heterogeneity was found to be comparable with, or greater than, the variability of the operator`s calorimetric measurements.

Welsh, T.L.; McRae, L.P.; Delegard, C.H. [Westinghouse Hanford Co., Richland, WA (United States); Liebetrau, A.M. [Pacific Northwest Lab., Richland, WA (United States); Johnson, W.C. [USDOE Richland Operations Office, WA (United States); Theis, W.; Lemaire, R.J. [International Atomic Energy Agency, Vienna (Austria); Xiao, J. [International Atomic Energy Agency, Toronto, Ontario (Canada)

1995-06-01T23:59:59.000Z

414

Commercial exploitation of nanophase powder formed with exploding wire technology. Final report  

SciTech Connect

In this report, the region of the energy density under the uniform heating conditions, of the lower pressures of the gas environment and of the smaller wire diameter have been studied. Here, the theoretical investigations of exploding wire and powder formation processes are presented, the results of experimental investigations are discussed. It is demonstrated that exploding wire technique is able to produce nanophase powders of aluminum and iron oxides with the mean surface size of 30 nm or less at commercial quantities per hour and the cost of no more than $1,000 per kilogram. Here too, decisions for theoretical and technical activity during future program are recommended.

NONE

1996-10-01T23:59:59.000Z

415

Mesoscale modeling of irreversible volume growth in powders of anisotropic crystals  

Science Conference Proceedings (OSTI)

Careful thermometric analysis (TMA) on powders of micron-sized triamino-trinitrobenzene (TATB) crystallites are shown to display irreversible growth in volume when subjected to repeated cycles of heating and cooling. Such behavior is counter-intuitive to typical materials response to simulated annealing cycles in atomic-scale molecular dynamics. However, through coarse-grained simulations using a mesoscale Hamiltonian we quantitatively reproduce irreversible growth behavior in such powdered material. We demonstrate that irreversible growth happens only in the presence of intrinsic crystalline anisotropy, and is mediated by particles much smaller than the average crystallite size.

Gee, R; Maiti, A; Fried, L

2006-05-05T23:59:59.000Z

416

Plasma Synthesis of Lithium Based Intercalation Powders for Solid Polymer Electrolyte Batteries  

DOE Patents (OSTI)

The invention relates to a process for preparing lithium intercalation compounds by plasma reaction comprising the steps of: forming a feed solution by mixing lithium nitrate or lithium hydroxide or lithium oxide and the required metal nitrate or metal hydroxide or metal oxide and between 10-50% alcohol by weight; mixing the feed solution with O2 gas wherein the O2 gas atomizes the feed solution into fine reactant droplets, inserting the atomized feed solution into a plasma reactor to form an intercalation powder; and if desired, heating the resulting powder to form a very pure single phase product.

Kong, Peter C.; Pink, Robert J.; Nelson, Lee O.

2005-01-04T23:59:59.000Z

417

Progressive Powder Coating: New Infrared Curing Oven at Metal Finishing Plant Increases Production by 50%  

SciTech Connect

Progressive Powder Coating in Mentor, Ohio, is a metal finishing plant that uses a convection oven in its manufacturing process. In an effort to save energy and improve production, the company installed an infrared oven in between the powder coating booth and the convection oven on its production line. This installation allowed the plant to increase its conveyor line speed and increase production by 50 percent. In addition, the plant reduced its natural gas consumption, yielding annual energy savings of approximately$54,000. With a total project cost of$136,000, the simple payback is 2.5 years.

Not Available

2003-05-01T23:59:59.000Z

418

Oil degradation during oil shale retorting. [Effects on oil yields from powdered shale  

DOE Green Energy (OSTI)

Recent experimental data demonstrating the effects of varied thermal histories on oil yield from powdered Colorado shale are reviewed. Losses in overall yield resulting from interruption of a rapid heating schedule with an isothermal holding period are directly related to the amounts of oil that are produced during the holding period. These amounts are also correlated with the inert gas flow rates required to raise the yields to the assay value. The results show that degradation of oil outside the shale particles is the major determinant of oil yield from powdered shale. Maximum thermal degradation rates are calculated from these data and compared with pyrolysis rates for petroleum fractions.

Raley, J.H.; Braun, R.L.

1976-05-24T23:59:59.000Z

419

Plasma synthesis of lithium based intercalation powders for solid polymer electrolyte batteries  

SciTech Connect

The invention relates to a process for preparing lithium intercalation compounds by plasma reaction comprising the steps of: forming a feed solution by mixing lithium nitrate or lithium hydroxide or lithium oxide and the required metal nitrate or metal hydroxide or metal oxide and between 10-50% alcohol by weight; mixing the feed solution with O.sub.2 gas wherein the O.sub.2 gas atomizes the feed solution into fine reactant droplets, inserting the atomized feed solution into a plasma reactor to form an intercalation powder; and if desired, heating the resulting powder to from a very pure single phase product.

Kong, Peter C. (Idaho Falls, ID); Pink, Robert J. (Pocatello, ID); Nelson, Lee O. (Idaho Falls, ID)

2005-01-04T23:59:59.000Z

420

Method for molding ceramic powders using a water-based gel casting  

DOE Patents (OSTI)

A method for molding ceramic powders comprises forming a slurry mixture including ceramic powder, a dispersant, and a monomer solution. The monomer solution includes at least one monofunctional monomer and at least one difunctional monomer, a free-radical initiator, and a aqueous solvent. The slurry mixture is transferred to a mold, and the mold containing the slurry mixture is heated to polymerize and crosslink the monomer and form a firm polymer-solvent gel matrix. The solid product any be removed from the mold and heated to first remove the solvent and subsequently remove the polymer, whereafter the product may be sintered.

Janney, Mark A. (Knoxville, TN); Omatete, Ogbemi O. (Lagos, NG)

1991-07-02T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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421

Method for molding ceramic powders using a water-based gel casting process  

DOE Patents (OSTI)

A method for molding ceramic powders comprises forming a slurry mixture including ceramic powder, a dispersant, and a monomer solution. The monomer solution includes at least one monofunctional monomer and at least one difunctional monomer, a free-radical initiator, and a aqueous solvent. The slurry mixture is transferred to a mold, and the mold containing the slurry mixture is heated to polymerize and crosslink the monomer and form a firm polymer-solvent gel matrix. The solid product may be removed from the mold and heated to first remove the solvent and subsequently remove the polymer, whereafter the product may be sintered.

Jenny, Mark A. (Knoxville, TN); Omalete, Ogbemi O. (Lagos, NG)

1992-09-08T23:59:59.000Z

422

Biomass-Derived Hydrogen from a Thermally Ballasted Gasifier Robert C. Brown, Glenn Norton, Andy Suby, Jerod Smeenk, Keith Cummer, and Josh Nunez  

E-Print Network (OSTI)

Biomass-Derived Hydrogen from a Thermally Ballasted Gasifier Robert C. Brown, Glenn Norton, Andy fuel cells. We have developed a thermally ballasted gasifier that uses a single reactor for both compared to conventional gasifiers. The carbon monoxide, along with steam used to fluidize the reactor, can

423

High Pressure Coolant Injection (HPCI) System Risk-Based Inspection Guide for Browns Ferry Nuclear Power Station  

Science Conference Proceedings (OSTI)

The High Pressure Coolant Injection (HPCI) system has been examined from a risk perspective. A System Risk-Based Inspection Guide (S-RIG) has been developed as an aid to HPCI system inspections at the Browns Ferry Nuclear Power Plant, Units 1, 2 and 3. The role of. the HPCI system in mitigating accidents is discussed in this S-RIG, along with insights on identified risk-based failure modes which could prevent proper operation of the system. The S-RIG provides a review of industry-wide operating experience, including plant-specific illustrative examples to augment the PRA and operational considerations in identifying a catalogue of basic PRA failure modes for the HPCI system. It is designed to be used as a reference for routine inspections, self-initiated safety system functional inspections (SSFIs), and the evaluation of risk significance of component failures at the nuclear power plant.

Wong, S.; DiBiasio, A.; Gunther, W. [Brookhaven National Lab., Upton, NY (United States)

1993-09-01T23:59:59.000Z

424

Monitoring Coal Bed Methane Production: A Case Study from the Powder River Basin, Wyoming, United States of America.  

E-Print Network (OSTI)

1 Monitoring Coal Bed Methane Production: A Case Study from the Powder River Basin, Wyoming, United The growing significance of the Powder River Basin's Coal Bed Methane (CBM) to United States domestic energy approximates 6% above the coal as well as inside the coal layer. This difference can be attributed primarily

Harris, Jerry M.

425

Sizing and burn time measurements of micron-sized metal powders  

SciTech Connect

Detailed ignition and combustion mechanisms are needed to develop optimized propellant and energetic formulations using micron-sized metal powders, such as aluminum. Combustion researchers have traditionally used relatively coarse metal particles to characterize the burn time dependence on particle size. However, measurements of burn times for particles below 10 {mu}m in diameter are still needed for aluminum powders and other metal fuels. The apparatus described here sizes the particles just before the ignition event, providing a direct correlation between individual particle size and its burn time. Two lasers were utilized: a 785 nm laser diode for sizing the particles and a 125 W CO{sub 2} laser for particle ignition. The particles crossed the 785 nm laser beam just before crossing the CO{sub 2} laser beam. The particle size was determined from the amplitude of the scattered 785 nm light pulse. The burn time was determined from the duration of the visible light emission produced from the ignited particle. The in situ measured particle size distributions compared well with the size distributions measured for the same powders by a commercial instrument using low angle laser light scattering. Our measurements with two nominally spherical aluminum powders, suggest that the burn times increase from 0.5 to {approx}2.5 ms as the particle diameters increase from 3 to 8 {mu}m.

Gill, Robert J.; Mohan, Salil; Dreizin, Edward L. [New Jersey Institute of Technology Newark, New Jersey 07102 (United States)

2009-06-15T23:59:59.000Z

426

Carbon nanotubes and other fullerenes produced from tire powder injected into an electric arc  

Science Conference Proceedings (OSTI)

A novel method of growing multiwall carbon nanotubes by injecting tire powder into an electric arc has been developed. The process is optimized using a DC electric arc in pressurized helium. The multiwall carbon nanotube product and the optimization process are characterized by transmission electron microscopy.

Murr, L.E. [Department of Metallurgical and Materials Engineering, University of Texas at El Paso, El Paso, TX 79968 (United States)]. E-mail: fekberg@utep.edu; Brown, D.K. [Department of Metallurgical and Materials Engineering, University of Texas at El Paso, El Paso, TX 79968 (United States); Esquivel, E.V. [Department of Metallurgical and Materials Engineering, University of Texas at El Paso, El Paso, TX 79968 (United States); Ponda, T.D. [Department of Metallurgical and Materials Engineering, University of Texas at El Paso, El Paso, TX 79968 (United States); Martinez, F. [Department of Metallurgical and Materials Engineering, University of Texas at El Paso, El Paso, TX 79968 (United States); Virgen, A. [Department of Metallurgical and Materials Engineering, University of Texas at El Paso, El Paso, TX 79968 (United States)

2005-11-15T23:59:59.000Z

427

COAL RESOURCES, POWDER RIVER BASIN By M.S. Ellis,1  

E-Print Network (OSTI)

Chapter PN COAL RESOURCES, POWDER RIVER BASIN By M.S. Ellis,1 G.L. Gunther,2 A.M. Ochs,2 S, Delaware 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky in the toolbar to return. 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky

428

DECKER COALFIELD, POWDER RIVER BASIN, MONTANA: GEOLOGY, COAL QUALITY, AND COAL  

E-Print Network (OSTI)

Chapter PD DECKER COALFIELD, POWDER RIVER BASIN, MONTANA: GEOLOGY, COAL QUALITY, AND COAL RESOURCES Tertiary coal beds and zones in the Northern RockyMountains and Great Plains region, U.S. Geological Survey of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great Plains region, U

429

ASHLAND COALFIELD, POWDER RIVER BASIN, MONTANA: GEOLOGY, COAL QUALITY, AND COAL  

E-Print Network (OSTI)

Chapter PA ASHLAND COALFIELD, POWDER RIVER BASIN, MONTANA: GEOLOGY, COAL QUALITY, AND COAL of selected Tertiary coal beds and zones in the Northern RockyMountains and Great Plains region, U Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great

430

SHERIDAN COALFIELD, POWDER RIVER BASIN: GEOLOGY, COAL QUALITY, AND COAL RESOURCES  

E-Print Network (OSTI)

Chapter PH SHERIDAN COALFIELD, POWDER RIVER BASIN: GEOLOGY, COAL QUALITY, AND COAL RESOURCES By M assessment of selected Tertiary coal beds and zones in the Northern RockyMountains and Great Plains region, U Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great

431

FORT UNION COAL IN THE POWDER RIVER BASIN, WYOMING AND MONTANA: A SYNTHESIS  

E-Print Network (OSTI)

Chapter PS FORT UNION COAL IN THE POWDER RIVER BASIN, WYOMING AND MONTANA: A SYNTHESIS By R of selected Tertiary coal beds and zones in the Northern RockyMountains and Great Plains region, U Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky Mountains and Great

432

Formulating Detergents and Personal Care ProductsChapter 3 Detergent Powders, Bars, Pastes, and Tablets  

Science Conference Proceedings (OSTI)

Formulating Detergents and Personal Care Products Chapter 3 Detergent Powders, Bars, Pastes, and Tablets Surfactants and Detergents eChapters Surfactants - Detergents AOCS Press 31AE8E3D42D3E14DDBA41DE5FCD66625 AOCS Press

433

Combustion synthesis of calcium phosphate bioceramic powders A. Cu neyt Tas *,1  

E-Print Network (OSTI)

Combustion synthesis of calcium phosphate bioceramic powders A. Cu? neyt Tas *,1 Department)2; Combustion synthesis; Hydroxyapatite 1. Introduction Calcium hydroxyapatite (HA: Ca10(PO4)6(OH)2), the major), instead of water, as the precipitation medium. Self-propagating combustion synthesis (SPCS

Tas, A. Cuneyt

434

Compression testing of a sintered Ti6Al4V powder compact for biomedical applications  

Science Conference Proceedings (OSTI)

In this study, the compression deformation behavior of a Ti6Al4V powder compact, prepared by the sintering of cold compacted atomized spherical particles (100-200 {mu}m) and containing 36-38% porosity, was investigated at quasi-static (1.6x10{sup -3}-1.6x10{sup -1} s{sup -1}) and high strain rates (300 and 900 s{sup -1}) using, respectively, conventional mechanical testing and Split Hopkinson Pressure Bar techniques. Microscopic studies of as-received powder and sintered powder compact showed that sintering at high temperature (1200 deg. C) and subsequent slow rate of cooling in the furnace changed the microstructure of powder from the acicular alpha ({alpha}) to the Widmanstaetten ({alpha}+{beta}) microstructure. In compression testing, at both quasi-static and high strain rates, the compact failed via shear bands formed along the diagonal axis, 45 deg. to the loading direction. Increasing the strain rate was found to increase both the flow stress and compressive strength of the compact but it did not affect the critical strain for shear localization. Microscopic analyses of failed samples and deformed but not failed samples of the compact further showed that fracture occurred in a ductile (dimpled) mode consisting of void initiation and growth in {alpha} phase and/or at the {alpha}/{beta} interface and macrocracking by void coalescence in the interparticle bond region.

Guden, M. [Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); Center for Materials Research, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); E-mail: mustafaguden@iyte.edu.tr; Celik, E. [Materials Science and Engineering Program, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); Akar, E. [Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); Cetiner, S. [Hipokrat A.S., 407/6 Sok., No:10, Pinarbasi, Izmir (Turkey)

2005-05-15T23:59:59.000Z

435

COLSTRIP COALFIELD, POWDER RIVER BASIN, MONTANA: GEOLOGY, COAL QUALITY, AND COAL  

E-Print Network (OSTI)

Chapter PC COLSTRIP COALFIELD, POWDER RIVER BASIN, MONTANA: GEOLOGY, COAL QUALITY, AND COAL 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky in the toolbar to return. 1999 Resource assessment of selected Tertiary coal beds and zones in the Northern Rocky

436

Identification of Compounds and Phases Using X-Ray Powder Diffraction  

Science Conference Proceedings (OSTI)

Table 1(a)   Identification of powder diffraction pattern from Al 2 O 3 using the Hanawalt search method...pattern from Al 2 O 3 using the Hanawalt search method The diffracting angles and intensities (area under each peak)

437

Characterization of MgO powders for use in thermal batteries  

SciTech Connect

Ten commercial MgO powders were evaluated for their suitability to act as a binder in the separator of thermal batteries to immobilize the electrolyte when it is molten. One brand in particular, Maglite S from Calgon, outperformed all the others. This report describes the results of a characterization study of this MgO as well as similar materials from other commercial vendors. The study objective was to define the critical properties of Maglite S MgO that are responsible for its superior performance in thermal-battery separators. Separator mixes were prepared with the various MgO powders and the resulting powders and pellets were characterized, to correlate key physical properties of these materials to select physical and chemical properties of the MgO powders used in their preparation. The MgO pore-size distribution was the only parameter that could be related to the deformation and electrolyte-leakage behavior of separator pellets. A potential replacement for the Maglite S is currently being qualified, since Maglite S MgO is no longer available.

Guidotti, R.A.; Reinhardt, W.

1996-09-01T23:59:59.000Z

438

Method of manufacturing iron aluminide by thermomechanical processing of elemental powders  

DOE Patents (OSTI)

A powder metallurgical process of preparing iron aluminide useful as electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 20 to 32% Al, and optional additions such as .ltoreq.1% Cr, .gtoreq.05% Zr or ZrO.sub.2 stringers extending perpendicular to an exposed surface of the heating element, .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Zr, .ltoreq.1% C, .ltoreq.0.1% B, .ltoreq.30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1 % rare earth metal, .ltoreq.1% oxygen, and/or .ltoreq.3% Cu. The process includes forming a mixture of aluminum powder and iron powder, shaping the mixture into an article such as by cold rolling the mixture into a sheet, and sintering the article at a temperature sufficient to react the iron and aluminum powders and form iron aluminide. The sintering can be followed by hot or cold rolling to reduce porosity created during the sintering step and optional annealing steps in a vacuum or inert atmosphere.

Deevi, Seetharama C. (Midlothian, VA); Lilly, Jr., A. Clifton (Chesterfield, VA); Sikka, Vinod K. (Oak Ridge, TN); Hajaligol, Mohammed R. (Richmond, VA)

2000-01-01T23:59:59.000Z

439

Determination of the adsorptive capacity and adsorption isotherm of vapor-phase mercury chloride on powdered activated carbon using thermogravimetric analysis  

Science Conference Proceedings (OSTI)

This study investigated the use of thermogravimetric analysis (TGA) to determine the adsorptive capacity and adsorption isotherm of vapor-phase mercury chloride on powdered activated carbon (PAC). The technique is commonly applied to remove mercury-containing air pollutants from gas streams emitted from municipal solid waste incinerators. An alternative form of powdered activated carbon derived from a pyrolyzed tire char was prepared for use herein. The capacity of waste tire-derived PAC to adsorb vapor-phase HgCl{sub 2} was successfully measured using a self-designed TGA adsorption system. Experimental results showed that the maximum adsorptive capacities of HgCl{sub 2} were 1.75, 0.688, and 0.230 mg of HgCl{sub 2} per gram of powdered activated carbon derived from carbon black at 30, 70, and 150{sup o} for 500 {mu}g/m{sup 3} of HgCl{sub 2}, respectively. Four adsorption isotherms obtained using the Langmuir, Freundlich, Redlich-Peterson, and Brunauer-Emmett-eller (BET) models were used to simulate the adsorption of HgCl{sub 2}. The comparison of experimental data associated with the four adsorption isotherms indicated that BET fit the experimental results better than did the other isotherms at 30{sup o}, whereas the Freundlich isotherm fit the experimental results better at 70 and 150{sup o}. Furthermore, the calculations of the parameters associated with Langmuir and Freundlich isotherms revealed that the adsorption of HgCl{sub 2} by PAC-derived carbon black favored adsorption at various HgCl{sub 2} concentrations and temperatures. 35 refs., 7 figs., 3 tabs.

Hsun-Yu Lin; Chung-Shin Yuan; Wei-Ching Chen; Chung-Hsuang Hung [National Sun Yat-Sen University, Taiwan (China). Institute of Environmental Engineering

2006-11-15T23:59:59.000Z

440

Fabrication of metal matrix composite by semi-solid powder processing  

SciTech Connect

Various metal matrix composites (MMCs) are widely used in the automotive, aerospace and electrical industries due to their capability and flexibility in improving the mechanical, thermal and electrical properties of a component. However, current manufacturing technologies may suffer from insufficient process stability and reliability and inadequate economic efficiency and may not be able to satisfy the increasing demands placed on MMCs. Semi-solid powder processing (SPP), a technology that combines traditional powder metallurgy and semi-solid forming methods, has potential to produce MMCs with low cost and high efficiency. In this work, the analytical study and experimental investigation of SPP on the fabrication of MMCs were explored. An analytical model was developed to understand the deformation mechanism of the powder compact in the semi-solid state. The densification behavior of the Al6061 and SiC powder mixtures was investigated with different liquid fractions and SiC volume fractions. The limits of SPP were analyzed in terms of reinforcement phase loading and its impact on the composite microstructure. To explore adoption of new materials, carbon nanotube (CNT) was investigated as a reinforcing material in aluminum matrix using SPP. The process was successfully modeled for the mono-phase powder (Al6061) compaction and the density and density distribution were predicted. The deformation mechanism at low and high liquid fractions was discussed. In addition, the compaction behavior of the ceramic-metal powder mixture was understood, and the SiC loading limit was identified by parametric study. For the fabrication of CNT reinforced Al6061 composite, the mechanical alloying of Al6061-CNT powders was first investigated. A mathematical model was developed to predict the CNT length change during the mechanical alloying process. The effects of mechanical alloying time and processing temperature during SPP were studied on the mechanical, microstructural and compositional properties of the Al6061-CNT composites. A shear lag model was applied to predict the mechanical property (hardness) of the composite. This work demonstrated the promising potential of SPP in the fabrication of particle/fiber (nanotube) reinforced MMCs.

Wu, Yufeng [Ames Laboratory

2012-11-28T23:59:59.000Z

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441

Method of manufacturing aluminide sheet by thermomechanical processing of aluminide powders  

DOE Patents (OSTI)

A powder metallurgical process of preparing a sheet from a powder having an intermetallic alloy composition such as an iron, nickel or titanium aluminide. The sheet can be manufactured into electrical resistance heating elements having improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The iron aluminide has an entirely ferritic microstructure which is free of austenite and can include, in weight %, 4 to 32% Al, and optional additions such as .ltoreq.1% Cr, .gtoreq.0.05% Zr.ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Ni, .ltoreq.0.75% C, .ltoreq.0.1% B, .ltoreq.1% submicron oxide particles and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, and/or .ltoreq.3% Cu. The process includes forming a non-densified metal sheet by consolidating a powder having an intermetallic alloy composition such as by roll compaction, tape casting or plasma spraying, forming a cold rolled sheet by cold rolling the non-densified metal sheet so as to increase the density and reduce the thickness thereof and annealing the cold rolled sheet. The powder can be a water, polymer or gas atomized powder which is subjecting to sieving and/or blending with a binder prior to the consolidation step. After the consolidation step, the sheet can be partially sintered. The cold rolling and/or annealing steps can be repeated to achieve the desired sheet thickness and properties. The annealing can be carried out in a vacuum furnace with a vacuum or inert atmosphere. During final annealing, the cold rolled sheet recrystallizes to an average grain size of about 10 to 30 .mu.m. Final stress relief annealing can be carried out in the B2 phase temperature range.

Hajaligol, Mohammad R. (Midlothian, VA); Scorey, Clive (Cheshire, CT); Sikka, Vinod K. (Oak Ridge, TN); Deevi, Seetharama C. (Midlothian, VA); Fleischhauer, Grier (Midlothian, VA); Lilly, Jr., A. Clifton (Chesterfield, VA); German, Randall M. (State College, PA)

2000-01-01T23:59:59.000Z

442

Inferring orientation distributions in anisotropic powders of nano-layered crystallites from a single two-dimensional WAXS image  

E-Print Network (OSTI)

The wide-angle scattering of X-rays by anisotropic powders of nano-layered crystallites (nano-stacks) is addressed. Assuming that the orientation distribution probability function f of the nano-stacks only depends on the deviation of the crystallites' orientation from a fixed reference direction, we derive a relation providing f from the dependence of a given diffraction peak's amplitude on the azimuthal angle. The method is applied to two systems of Na-fluorohectorite (NaFH) clay particles, using synchrotron radiation and a WAXS setup with a two-dimensional detector. In the first system, which consists of dry-pressed NaFH samples, the orientation distribution probability function corresponds to a classical uniaxial nematic order. The second system is observed in bundles of polarized NaFH particles in silicon oil; in this case, the nanostacks have their directors on average in a plane normal to the reference direction, and f is a function of the angle between a nano-stack's director and that plane. In both cases, a suitable Maier-Saupe function is obtained for the distributions, and the reference direction is determined with respect to the laboratory frame. The method only requires one scattering image. Besides, consistency can be checked by determining the orientation distribution from several diffraction peaks independently.

Yves Meheust; Kenneth Dahl Knudsen; Jon Otto Fossum

2006-02-01T23:59:59.000Z

443

Near-Net Shape Fabrication Using Low-Cost Titanium Alloy Powders  

SciTech Connect

The use of titanium in commercial aircraft production has risen steadily over the last half century. The aerospace industry currently accounts for 58% of the domestic titanium market. The Kroll process, which has been used for over 50 years to produce titanium metal from its mineral form, consumes large quantities of energy. And, methods used to convert the titanium sponge output of the Kroll process into useful mill products also require significant energy resources. These traditional approaches result in product forms that are very expensive, have long lead times of up to a year or more, and require costly operations to fabricate finished parts. Given the increasing role of titanium in commercial aircraft, new titanium technologies are needed to create a more sustainable manufacturing strategy that consumes less energy, requires less material, and significantly reduces material and fabrication costs. A number of emerging processes are under development which could lead to a breakthrough in extraction technology. Several of these processes produce titanium alloy powder as a product. The availability of low-cost titanium powders may in turn enable a more efficient approach to the manufacture of titanium components using powder metallurgical processing. The objective of this project was to define energy-efficient strategies for manufacturing large-scale titanium structures using these low-cost powders as the starting material. Strategies include approaches to powder consolidation to achieve fully dense mill products, and joining technologies such as friction and laser welding to combine those mill products into near net shape (NNS) preforms for machining. The near net shape approach reduces material and machining requirements providing for improved affordability of titanium structures. Energy and cost modeling was used to define those approaches that offer the largest energy savings together with the economic benefits needed to drive implementation. Technical feasibility studies were performed to identify the most viable approaches to NNS preform fabrication using basic powder metallurgy mill product forms as the building blocks and advanced joining techniques including fusion and solid state joining to assemble these building blocks into efficient machining performs.

Dr. David M. Bowden; Dr. William H. Peter

2012-03-31T23:59:59.000Z

444

Facies architecture of the upper Calvert Bluff Formation exposed in the highwall of Big Brown Mine, Fairfield, Texas  

E-Print Network (OSTI)

The facies architecture and geometry of stratigraphic surfaces within a lignite bearing interval of the Paleocene upper Calvert Bluff Formation is mapped on a photomosaic of the 150 ft (50 m) high and 12,000 ft (4km) long â??Câ? area highwall of Big Brown Mine, near Fairfield, Texas. Observed bedding and facies architecture are interpreted in terms of temporal changes, depositional environments and sequence stratigraphic setting. A three dimensional grid of 89 subsurface logs is correlated to this photomosaic to characterize log response patterns of facies. Six facies are observed: 1) lignite, 2) interdistributary bay mud, 3) prograding delta, 4) delta top mud, 5) distributary channels, and 6) incised valley fill. The six facies were defined by a combination of mapped photomosaic observations and subsurface log correlations. The lignite deposit formed in a low depositional energy, low sediment input, high-organic productivity interchannel basin. Overlying mud records overbank flooding followed by avulsion and progradation of delta deposits. Tidal-flat deposits overlying prograding delta deposits record fluctuating energy conditions on the emerging delta top. Channel deposits cutting into the delta top record lateral channel migration across delta top floodplains. These regressive delta deposits are capped by a local incised sequence boundary overlain by fluvial channel deposits inferred to have allowed sediment to bypass further basinward during lowstand. A sheet of channel deposits capping this highwall exposure records more recent erosion, followed by development of modern soil horizons. The Big Brown Mine highwall exposes a relatively complete high-frequency Paleocene stratigraphic sequence developed in an area landward of the shoreline position during maximum transgression, that progresses upsection from: 1) highstand alluvial flood basin coals, 2) a thin condensed maximum flooding interdistributary shale, 3) a thick succession of regressive deltaic strata, and 4) a high-relief, sequence-bounding erosion surface overlain by a lowstand to transgressive fill of channel deposits. Correlations with regional Wilcox Group stratigraphic studies spanning coeval shoreline and shelf strata indicate that this high-frequency sequence is within the transgressive systems tract of a 3rd order stratigraphic sequence. It appears that high-frequency sequences of sub-regional extent control the complex distribution of coal seams within central Texas.

Sturdy, Michael Dale

2006-08-01T23:59:59.000Z

445

Multi-Seam Well Completion Technology: Implications for Powder River Basin Coalbed Methane Production  

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

Seam Well Completion Seam Well Completion Technology: Implications for Powder River Basin Coalbed Methane Production U.S. Department of Energy Office of Fossil Energy and National Energy Technology Laboratory Strategic Center for Natural Gas September 2003 DOE/NETL-2003/1193 Multi-Seam Well Completion Technology: Implications for Powder River Basin Coalbed Methane Production U.S. Department of Energy National Energy Technology Laboratory (NETL) (Strategic Center for Natural Gas) DOE/NETL-2003/1193 September 2003 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal

446

Microstructure and mechanical behavior of 6061Al reinforced with silicon nitride particles, processed by powder metallurgy  

SciTech Connect

A critical step in the processing of Metal Matrix Composites (MMCs) reinforced with ceramic particles is the insertion of these particles into the metal matrix alloy. This greatly influences the strength of the composite since it is controlled by the metal-particle interfacial bond strength. Because of the difficulty in wetting ceramic particles with molten metal, the Powder Metallurgy or PM route was developed. Powder Extrusion consolidates the composite to over 98% dense, and can be carried out below the Solidus Temperature of the alloy. The most important aspect of the microstructure is the distribution of the reinforcing particles, and this depends on the processing and fabrication routes involved, as well as the relative size of the matrix and reinforcing particles. Extrusion can homogenize the structure to some extent, but minimizing reinforcement inhomogeneity during initial processing is important to achieve optimum properties.

Amigo, V.; Ortiz, J.L.; Salvador, M.D.

2000-01-31T23:59:59.000Z

447

Mercury reduction studies to facilitate the thermal decontamination of phosphor powder residues from spent fluorescent lamps  

SciTech Connect

This work investigates the thermal release of mercury from phosphor powder of spent fluorescent lamps. The treatment conditions and the ability of various reducing agents (primarily sodium borohydride) to lower the overall heating temperature required to improve the release of Hg have been evaluated. Hg species in samples were monitored in a thermal desorption atomic absorption spectrometer system, and total mercury was analyzed in a cold vapor atomic absorption spectrometer. Sodium borohydride was the best reducing agent among the ones studied. However, citric acid presented a high capacity to weaken mercury bonds with the matrix. When the sample was crushed with sodium borohydride for 40 min in a mass ratio of 10:1 (sample:reducing agent) and submitted to thermal treatment at 300 deg. C for 2 h, the concentration of mercury in a phosphor powder sample with 103 mg kg{sup -1} of mercury reached 6.6 mg kg{sup -1}.

Alves Durao, Walter [Chemistry Department, Federal University of Minas Gerais (UFMG), Cidade Universitaria 30.123-970 Belo Horizonte, MG (Brazil); Andreva de Castro, Camila [Chemistry Engineering Department, Federal University of Minas Gerais (UFMG) (Brazil); Carvalhinho Windmoeller, Claudia [Chemistry Department, Federal University of Minas Gerais (UFMG), Cidade Universitaria 30.123-970 Belo Horizonte, MG (Brazil)], E-mail: claucw@netuno.lcc.ufmg.br

2008-11-15T23:59:59.000Z

448

Apparatus for and method of producing monodisperse submicron polymer powders from solution  

DOE Patents (OSTI)

This invention describes a method of producing polymer powders from solution in a compatible solvent using a new device referred to as a microdroplets on demand generator (MODG). The embodiment of this invention is the MODG apparatus and its relevance as a method to extensive application in materials science and technology. Proof of concept is demonstrated using poly(ethylene) glycol polymer microparticles generated with the MODG and captured in a microparticle levitation device.

Noid, Donald W. (Knoxville, TN); Otaigbe, Joshua U. (Ames, IA); Barnes, Michael D. (Oak Ridge, TN); Sumpter, Bobby G. (Knoxville, TN); Kung, Chung-Yi (Tuscon, AZ)

2002-01-01T23:59:59.000Z

449

Impact of Powder River Basin Coal on Power and Fuel Markets  

Science Conference Proceedings (OSTI)

Powder River Basin coal is becoming everybody's business. Its use has skyrocketed, increasing beyond expectations in every time period since development took off in the 1970s. The trend shows no signs of slowing down and may even accelerate. This report explores how much further growth is possible by 2005, how power prices may be affected in different regions, and what this means for other coal supply regions.

1998-08-27T23:59:59.000Z

450

Manual Plasma Welding (PTAW) Evaluation with Powder Hardfacing Alloys: Revision 1 to 1003164  

Science Conference Proceedings (OSTI)

Repair practices for hardfacing alloys using gas tungsten arc welding (GTAW) and shielded metal arc welding (SMAW) have been evaluated in the past on hardfacing applied with various automated welding processes. Accessibility often limits the use of these welding processes in typical manual repair applications. Recent developments in PTAW powder welding systems by Deloro-Stellite have prompted evaluations of an alternative repair technique for hardfacing materials. This document reports on the tests and f...

2002-12-13T23:59:59.000Z

451

Gas Atomization Precursor Powder Approach for Simplified Large-Scale Production of Oxide Dispersion  

SciTech Connect

Oxide dispersion strengthened (ODS) Ni-based alloys show promise for future energy applications that require high-temperature and oxidation resistant properties. Gas atomization reaction synthesis (GARS), with a mixed (Ar/O{sub 2}) atomization gas, is being developed as a simplified route for producing ODS precursor powders. Internal oxidation studies determined Ni-Cr-Y-(Hf or Ti) containing systems are suitable for production of ODS alloys via hot consolidation, which is used to encourage oxygen exchange between the less stable surface oxide phase and reactive alloying elements, resulting in highly stable nano-metric dispersoid formation. Size control of powders is key to optimizing microstructural and strengthening features. Aspiration and, previously, water modeling experiments were used to develop atomization process parameters that encourage controlled powder production while maintaining reduced operating costs when implemented on an industrial scale. For an increase in pour tube extension: aspiration base pressure at any given operating pressure was found to decrease while wake closure pressure was found to increase. Aspiration hysteresis was observed as recorded previously in the literature. Light emission was observed above wake closure pressures.

Meyer, John; Anderson, Iver; Rieken, Joel; Byrd, David

2011-04-01T23:59:59.000Z

452

How to Obtain Authorization to Import and/or Export Natural Gas...  

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

How to Obtain Authorization to Import andor Export Natural Gas and LNG How to Obtain Authorization to Import andor Export Natural Gas and LNG Petroleum Reserves International...

453

How to Obtain Authorization to Import and/or Export Natural Gas...  

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

Services Natural Gas Regulation How to Obtain Authorization to Import andor Export Natural Gas and LNG How to Obtain Authorization to Import andor Export Natural Gas...

454

Lithium cobalt(II) pyrophosphate, Li[subscript 1.86]CoP[subscript 2]O[subscript 7], from synchrotron X-ray powder data  

SciTech Connect

Structure refinement of high-resolution X-ray powder diffraction data of the title compound gave the composition Li{sub 1.865}CoP{sub 2}O{sub 7}, which is also verified by the ICP measurement. Two Co sites exist in the structure: one is a CoO{sub 5} square pyramid and the other is a CoO{sub 6} octahedron. They share edges and are further interconnected through P{sub 2}O{sub 7} groups, forming a three-dimensional framework, which exhibits different kinds of intersecting tunnels containing Li cations and could be of great interest in Li ion battery chemistry. The structure also exhibits cation disorder with 13.5% Co residing at the lithium (Li1) site. Co seems to have an average oxidation state of 2.135, as obtained from the strutural stochiometry that closely supports the magnetic susceptibility findings.

Zhou, Hui; Upreti, Shailesh; Chernova, Natasha A.; Whittingham, M.Stanley (SUNY-Binghamton)

2011-11-17T23:59:59.000Z

455

OGLE-2008-BLG-510: first automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?  

E-Print Network (OSTI)

The microlensing event OGLE-2008-BLG-510 is characterised by an evident asymmetric shape of the peak, promptly detected by the ARTEMiS system in real time. The skewness of the light curve appears to be compatible both with binary-lens and binary-source models, including the possibility that the lens system consists of an M dwarf orbited by a brown dwarf. The detection of this microlensing anomaly and our analysis demonstrates that: 1) automated real-time detection of weak microlensing anomalies with immediate feedback is feasible, efficient, and sensitive, 2) rather common weak features intrinsically come with ambiguities that are not easily resolved from photometric light curves, 3) a modelling approach that finds all features of parameter space rather than just the `favourite model' is required, and 4) the data quality is most crucial, where systematics can be confused with real features, in particular small higher-order effects such as orbital motion signatures. It moreover becomes apparent that events wit...

Bozza, V; Rattenbury, N J; Joergensen, U G; Tsapras, Y; Bramich, D M; Udalski, A; Bond, I A; Liebig, C; Cassan, A; Fouque, P; Fukui, A; Hundertmark, M; Shin, I -G; Lee, S H; Choi, J -Y; Park, S -Y; Gould, A; Allan, A; Mao, S; Wyrzykowski, L; Street, R A; Buckley, D; Nagayama, T; Mathiasen, M; Hinse, T C; Novati, S Calchi; Harpsoee, K; Mancini, L; Scarpetta, G; Anguita, T; Burgdorf, M J; Horne, K; Hornstrup, A; Kains, N; Kerins, E; Kjaergaard, P; Masi, G; Rahvar, S; Ricci, D; Snodgrass, C; Southworth, J; Steele, I A; Surdej, J; Thoene, C C; Wambsganss, J; Zub, M; Albrow, M D; Batista, V; Beaulieu, J -P; Bennett, D P; Caldwell, J A R; Cole, A; Cook, K H; Coutures, C; Dieters, S; Prester, D Dominis; Donatowicz, J; Greenhill, J; Kane, S R; Kubas, D; Marquette, J -B; Martin, R; Menzies, J; Pollard, K R; Sahu, K C; Williams, A; Szymanski, M K; Kubiak, M; Pietrzynski, G; Soszynski, I; Poleski, R; Ulaczyk, K; DePoy, D L; Dong, S; Han, C; Janczak, J; Lee, C -U; Pogge, R W; Abe, F; Furusawa, K; Hearnshaw, J B; Itow, Y; Kilmartin, P M; Korpela, A V; Lin, W; Ling, C H; Masuda, K; Matsubara, Y; Miyake, N; Muraki, Y; Ohnishi, K; Perrott, Y C; Saito, To; Skuljan, L; Sullivan, D J; Sumi, T; Suzuki, D; Sweatman, W L; Tristram, P J; Wada, K; Yock, P C M; Gulbis, A; Hashimoto, Y; Kniazev, A; Vaisanen, P

2012-01-01T23:59:59.000Z

456

The influence of non-isotropic scattering of thermal radiation on spectra of brown dwarfs and hot exoplanets  

E-Print Network (OSTI)

(abridged) We calculate near-infrared thermal emission spectra using a doubling-adding radiative transfer code, which includes scattering by clouds and haze. Initial temperature profiles and cloud optical depths are taken from the drift-phoenix brown dwarf model. We show that cloud particles change the spectrum compared to when clouds are ignored. The clouds reduce fluxes in the near-infrared spectrum and make it redder than for the clear sky case. We also show that not including scattering in the spectral calculations can result in errors on the spectra of many tens of percent, both in magnitude and in variations with wavelength. This is especially apparent for particles that are larger than the wavelength and only have little iron in them. Scattering particles will show deeper absorption features than absorbing (e.g. iron) particles and particle size will also affect the calculated infrared colours. Large particles also tend to be strongly forward-scattering, and we show that assuming isotropic scattering i...

de Kok, R J; Stam, D M; Woitke, P; Witte, S

2011-01-01T23:59:59.000Z

457

Functional properties of BaTiO{sub 3}-Ni{sub 0.5}Zn{sub 0.5}Fe{sub 2}O{sub 4} magnetoelectric ceramics prepared from powders with core-shell structure  

Science Conference Proceedings (OSTI)

In the present work, diphasic ceramic composites with core-shell nanostructures formed by Ni{sub 0.50}Zn{sub 0.50}Fe{sub 2}O{sub 4} core and BaTiO{sub 3} shell were investigated. Their properties were compared with those of composites prepared by coprecipitation. The core-shell structure was confirmed by microstructural powder analysis. Homogeneous microstructures with a good phase mixing and percolated dielectric phase by the magnetic one were obtained from coprecipitated powders. Less homogeneous microstructures resulted in ceramics produced from the powder prepared by core-shell method, with isolated small ferrite grains besides large ferrite aggregates embedded into the BaTiO{sub 3} matrix. Both the ferroelectric and magnetic phases preserve their basic properties in bulk composite form. However, important differences in the dielectric relaxation and conduction mechanisms were found as result of the microstructural difference. Extrinsic contributions play important roles in modifying the electric properties in both ceramics, causing space charge effect, Maxwell-Wagner relaxations and hopping conductivity, mainly due to the ferrite low resistivity phase. The conductivity and dielectric modulus spectra analysis allowed to identify different polaron contributions associated with the microstructural differences. It results that by using the core-shell method, improved dielectric properties and limited hopping contributions can be realized.

Curecheriu, L. P.; Mitoseriu, L.; Postolache, P. [Department of Physics, Al. I. Cuza University, Bv. Carol I, no. 11, Iasi 700506 (Romania); Buscaglia, M. T.; Buscaglia, V. [Institute for Energetics and Interphases, CNR, Via de Marini no. 6, Genoa I-16149 (Italy); Ianculescu, A. [Department of Oxide Materials Science and Engineering, Polytechnics University, 1-7 Gh. Polizu, P.O. Box 12-134, Bucharest 011061 (Romania); Nanni, P. [Institute for Energetics and Interphases, CNR, Via de Marini no. 6, Genoa I-16149 (Italy); Department of Chemistry and Process Engineering, University of Genoa, P-le Kennedy no. 1, Genoa (Italy)

2010-05-15T23:59:59.000Z

458

Design and formation mechanism of self-organized core/shell structure composite powder in immiscible liquid system  

Science Conference Proceedings (OSTI)

Under the guidance of the calculation of phase diagrams method, the self-organized Cu alloy/stainless steel composite powders with a core/shell microstructure were developed based on the gas atomization process, and the formation evolution of self-organized core/shell structure composite powders was modeled by the phase field method. This paper gives a more detailed explanation for the formation of self-organized core/shell structure composite powders from the viewpoints of thermodynamics and kinetics. Such core/shell structure composite powders have good combination of high strength and corrosion resistance (Fe-rich phase) and high electric and thermal conductivities (Cu-rich phase) with many potential advanced applications in electronic devices.

Wang Cuiping; Liu Xingjun; Shi Rongpei; Shen Chen; Wang Yunzhi; Ohnuma, Ikuo; Kainuma, Ryosuke; Ishida, Kiyohito [Department of Materials Science and Engineering, Xiamen University, Xiamen 361005 (China); Department of Materials Science and Engineering, Ohio State University, 2041 College Road, Columbus, Ohio 43210 (United States); Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579 (Japan)

2007-10-01T23:59:59.000Z

459

Gas atomized precursor alloy powder for oxide dispersion strengthened ferritic stainless steel  

Science Conference Proceedings (OSTI)

Gas atomization reaction synthesis (GARS) was employed as a simplified method for producing precursor powders for oxide dispersion strengthened (ODS) ferritic stainless steels (e.g., Fe-Cr-Y-(Ti,Hf)-O), departing from the conventional mechanical alloying (MA) process. During GARS processing a reactive atomization gas (i.e., Ar-O{sub 2}) was used to oxidize the powder surfaces during primary break-up and rapid solidification of the molten alloy. This resulted in envelopment of the powders by an ultra-thin (t < 150 nm) metastable Cr-enriched oxide layer that was used as a vehicle for solid-state transport of O into the consolidated microstructure. In an attempt to better understand the kinetics of this GARS reaction, theoretical cooling curves for the atomized droplets were calculated and used to establish an oxidation model for this process. Subsequent elevated temperature heat treatments, which were derived from Rhines pack measurements using an internal oxidation model, were used to promote thermodynamically driven O exchange reactions between trapped films of the initial Cr-enriched surface oxide and internal Y-enriched intermetallic precipitates. This novel microstructural evolution process resulted in the successful formation of nano-metric Y-enriched dispersoids, as confirmed using high energy X-ray diffraction and transmission electron microscopy (TEM), equivalent to conventional ODS alloys from MA powders. The thermal stability of these Y-enriched dispersoids was evaluated using high temperature (1200C) annealing treatments ranging from 2.5 to 1,000 hrs of exposure. In a further departure from current ODS practice, replacing Ti with additions of Hf appeared to improve the Y-enriched dispersoid thermal stability by means of crystal structure modification. Additionally, the spatial distribution of the dispersoids was found to depend strongly on the original rapidly solidified microstructure. To exploit this, ODS microstructures were engineered from different powder particle size ranges, illustrating microstructural control as a function of particle solidification rate. The consolidation of ultra-fine powders (dia. ? 5?m) resulted in a significant reduction in dispersoid size and spacing, consistent with initial scanning electron microscopy studies on as-atomized cross-sectioned particles that suggested that these powders solidified above the threshold velocity to effectively solute trap Y within the ?-(Fe,Cr) matrix. Interestingly, when the solidification velocity as a function of particle size was extracted from the aforementioned theoretical particle cooling curves, it could be offered as supporting evidence for these microstructure observations. Thermal-mechanical treatments also were used to create and evaluate the stability of a dislocation substructure within these alloys, using microhardness and TEM analysis of the alloy sub-grain and grain structure. Moreover, elevated temperature tensile tests up to 800C were used to assess the initial mechanical strength of the ODS microstructure.

Rieken, Joel

2011-12-13T23:59:59.000Z

460

Chem-prep PZT 95/5 for neutron generator applicatios : powder preparation characterization utilizing design of experiments.  

Science Conference Proceedings (OSTI)

Niobium doped PZT 95/5 (lead zirconate-lead titanate) is the material used in voltage bars for all ferroelectric neutron generator power supplies. In June of 1999, the transfer and scale-up of the Sandia Process from Department 1846 to Department 14192 was initiated. The laboratory-scale process of 1.6 kg has been successfully scaled to a production batch quantity of 10 kg. This report documents efforts to characterize and optimize the production-scale process utilizing Design of Experiments methodology. Of the 34 factors identified in the powder preparation sub-process, 11 were initially selected for the screening design. Additional experiments and safety analysis subsequently reduced the screening design to six factors. Three of the six factors (Milling Time, Media Size, and Pyrolysis Air Flow) were identified as statistically significant for one or more responses and were further investigated through a full factorial interaction design. Analysis of the interaction design resulted in developing models for Powder Bulk Density, Powder Tap Density, and +20 Mesh Fraction. Subsequent batches validated the models. The initial baseline powder preparation conditions were modified, resulting in improved powder yield by significantly reducing the +20 mesh waste fraction. Response variation analysis indicated additional investigation of the powder preparation sub-process steps was necessary to identify and reduce the sources of variation to further optimize the process.

Lockwood, Steven John; Rodman-Gonzales, Emily Diane; Voigt, James A.; Moore, Diana Lynn

2003-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "brown powder obtained" 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
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461

Investigation of the effects of pressure on the compaction and subsequent sintering of nanosize powders. Final report  

Science Conference Proceedings (OSTI)

With current technology and available raw materials, one knows that it is very difficult, if not impossible, to produce a monolithic ceramic material with an average grain size of less than 100 nm. The grains of ceramic materials cannot be refined by cold working as is typically done in metals. Hence, the starting ceramic powder must be of a smaller or similar particle size as the desired grain size for the final product. The availability of nanosize (<100 nm) ceramic powders, however, is limited. In many cases, the powders consist of polymorphic mixtures, precursors, or amorphous phases of the desired material. Phase transformation during sintering is difficult to control, and when it does occur it usually is accompanied by significant microstructural changes and grain growth. An example of such a powder is Al{sub 2}O{sub 3}. To the best of the authors` knowledge, high purity nanosize {alpha}-Al{sub 2}O{sub 3} powder is unavailable commercially. However, a variety of nanosize transitional forms of Al{sub 2}O{sub 3}, including the {gamma} and {delta} polymorphs, are commercially available in large quantities as mixtures. Results on the compaction and sintering of nanosize {gamma}-Al{sub 2}O{sub 3} powder are reported here.

Gonzalez, E.J.; Piermarini, G.J.; Hockey, B.; Malghan, S.G. [National Inst. of Standards and Technology, Gaithersburg, MD (United States). Ceramics Div.

1996-02-26T23:59:59.000Z

462

Final report for the ASC gas-powder two-phase flow modeling project AD2006-09.  

SciTech Connect

This report documents activities performed in FY2006 under the ''Gas-Powder Two-Phase Flow Modeling Project'', ASC project AD2006-09. Sandia has a need to understand phenomena related to the transport of powders in systems. This report documents a modeling strategy inspired by powder transport experiments conducted at Sandia in 2002. A baseline gas-powder two-phase flow model, developed under a companion PEM project and implemented into the Sierra code FUEGO, is presented and discussed here. This report also documents a number of computational tests that were conducted to evaluate the accuracy and robustness of the new model. Although considerable progress was made in implementing the complex two-phase flow model, this project has identified two important areas that need further attention. These include the need to compute robust compressible flow solutions for Mach numbers exceeding 0.35 and the need to improve conservation of mass for the powder phase. Recommendations for future work in the area of gas-powder two-phase flow are provided.

Evans, Gregory Herbert; Winters, William S.

2007-01-01T23:59:59.000Z

463

Powder Technology  

Science Conference Proceedings (OSTI)

"The Extrusion Freeforming of Functional Ceramic Prototypes" (Overview), R. Vaidyanathan, J. Walish, J.L. Lombardi, S. Kasichainula, P. Calvert, and K.C....

464

Powder Consolidation  

Science Conference Proceedings (OSTI)

Table 2   Approximate costs of steel P/M parts produced by various methods...Condition Density range, g/cm 3 1997 selling price (a) , $/lb Pressed and sintered 6.0??7.1 2.45??2.70 Pressed, sintered, sized 6.0??7.1 2.90??3.20 Copper infiltrated 7.3??7.5 3.50??3.55 Warm formed 7.2??7.4 3.10??3.30 Double pressed and sintered 7.2??7.4 4.00??4.10 Metal injection molded 7.5??7.6 45.0??70.0...

465

Powder Technology  

Science Conference Proceedings (OSTI)

Title, Author, Publisher, Product Type, In Stock, Date Published. Add to Cart, Image, Click on Title to view details, Member (Student) Price, Non-member Price.

466

Powder Processing  

Science Conference Proceedings (OSTI)

Mar 14, 2012... U.S. Army Research Office; Xiaoxu Huang, Ris National Laboratory for Sustainable Energy, Technical University of Denmark; Hyoung Seop...

467

Powder Composition  

Science Conference Proceedings (OSTI)

Table 5   Selection guidelines for hardfacing alloy systems...in austenite matrix None Agricultural machinery, coke shutes, brick-making

469

Powder Metallurgy of Uranium Alloy Fuels for TRU-Burning Reactors Final Technical Report  

SciTech Connect

Overview Fast reactors were evaluated to enable the transmutation of transuranic isotopes generated by nuclear energy systems. The motivation for this was that TRU isotopes have high radiotoxicity and relatively long half-lives, making them unattractive for disposal in a long-term geologic repository. Fast reactors provide an efficient means to utilize the energy content of the TRUs while destroying them. An enabling technology that requires research and development is the fabrication metallic fuel containing TRU isotopes using powder metallurgy methods. This project focused upon developing a powder metallurgical fabrication method to produce U-Zr-transuranic (TRU) alloys at relatively low processing temperatures (500C to 600C) using either hot extrusion or alpha-phase sintering for charecterization. Researchers quantified the fundamental aspects of both processing methods using surrogate metals to simulate the TRU elements. The process produced novel solutions to some of the issues relating to metallic fuels, such as fuel-cladding chemical interactions, fuel swelling, volatility losses during casting, and casting mold material losses. Workscope There were two primary tasks associated with this project: 1. Hot working fabrication using mechanical alloying and extrusion Design, fabricate, and assemble extrusion equipment Extrusion database on DU metal Extrusion database on U-10Zr alloys Extrusion database on U-20xx-10Zr alloys Evaluation and testing of tube sheath metals 2. Low-temperature sintering of U alloys Design, fabricate, and assemble equipment Sintering database on DU metal Sintering database on U-10Zr alloys Liquid assisted phase sintering on U-20xx-10Zr alloys Appendices Outline Appendix A contains a Fuel Cycle Research & Development (FCR&D) poster and contact presentation where TAMU made primary contributions. Appendix B contains MSNE theses and final defense presentations by David Garnetti and Grant Helmreich outlining the beginning of the materials processing setup. Also included within this section is a thesis proposal by Jeff Hausaman. Appendix C contains the public papers and presentations introduced at the 2010 American Nuclear Society Winter Meeting. Appendix AMSNE theses of David Garnetti and Grant Helmreich and proposal by Jeff Hausaman A.1 December 2009 Thesis by David Garnetti entitled Uranium Powder Production Via Hydride Formation and Alpha Phase Sintering of Uranium and Uranium-Zirconium Alloys for Advanced Nuclear Fuel Applications A.2 September 2009 Presentation by David Garnetti (same title as document in Appendix B.1) A.3 December 2010 Thesis by Grant Helmreich entitled Characterization of Alpha-Phase Sintering of Uranium and Uranium-Zirconium Alloys for Advanced Nuclear Fuel Applications A.4 October 2010 Presentation by Grant Helmreich (same title as document in Appendix B.3) A.5 Thesis Proposal by Jeffrey Hausaman entitled Hot Extrusion of Alpha Phase Uranium-Zirconium Alloys for TRU Burning Fast Reactors Appendix BExternal presentations introduced at the 2010 ANS Winter Meeting B.1 J.S. Hausaman, D.J. Garnetti, and S.M. McDeavitt, Powder Metallurgy of Alpha Phase Uranium Alloys for TRU Burning Fast Reactors, Proceedings of 2010 ANS Winter Meeting, Las Vegas, Nevada, USA, November 7-10, 2010 B.2 PowerPoint Presentation Slides from C.1 B.3 G.W. Helmreich, W.J. Sames, D.J. Garnetti, and S.M. McDeavitt, Uranium Powder Production Using a Hydride-Dehydride Process, Proceedings of 2010 ANS Winter Meeting, Las Vegas, Nevada, USA, November 7-10, 2010 B.4. PowerPoint Presentation Slides from C.3 B.5 Poster Presentation from C.3 Appendix CFuel cycle research and development undergraduate materials and poster presentation C.1 Poster entitled Characterization of Alpha-Phase Sintering of Uranium and Uranium-Zirconium Alloys presented at the Fuel Cycle Technologies Program Annual Meeting C.2 April 2011 Honors Undergraduate Thesis by William Sames, Research Fellow, entitled Uranium Metal Powder Production, Particle Dis

Sean M. McDeavitt

2011-04-29T23:59:59.000Z

470

Spectrum and proper motion of a brown dwarf companion of the T Tauri star CoD-33 7795  

E-Print Network (OSTI)

We present optical and infrared spectra as well as the proper motion of an H=12 mag object 2" off the ~5 mag brighter spectroscopic binary star CoD-33 7795 (=TWA-5), a member of the TW Hya association of T Tauri stars at ~55 pc. It was suggested as companion candidate by Lowrance et al. (1999) and Webb et al. (1999), but neither a spectrum nor the proper motion of the faint object were available before. Our spectra taken with FORS2 and ISAAC at the ESO-VLT reveal that the companion candidate has spectral type M8.5 to M9. It shows strong H-alpha emission and weak Na I absorption, both indicative of a young age. The faint object is clearly detected and resolved in our optical and infrared images, with a FWHM of 0.18" in the FORS2 image. The faint object's proper motion, based on two year epoch difference, is consistent with the proper motion of CoD-33 7795 by 5 Gaussian sigma significance. From three different theoretical pre-main sequence models, we estimate the companion mass to be between ~15 and 40 M_jup, assuming the distance and age of the primary. A slight offset between the VLT and HST images with an epoch difference of two years can be interpreted as orbital motion. The probability for chance alignment of such a late-type object that close to CoD-33 7795 with the correct proper motion is below 7e-9. Hence, the faint object is physically associated with CoD-33 7795, the 4th brown dwarf companion around a normal star confirmed by both spectrum and proper motion, the first around a pre-main sequence star.

R. Neuhaeuser; E. W. Guenther; M. G. Petr; W. Brandner; N. Huelamo; J. Alves

2000-07-20T23:59:59.000Z

471

A Sample of Very Young Field L Dwarfs and Implications for the Brown Dwarf "Lithium Test" at Early Ages  

E-Print Network (OSTI)

Using a large sample of optical spectra of late-type dwarfs, we identify a subset of late-M through L field dwarfs that, because of the presence of low-gravity features in their spectra, are believed to be unusually young. From a combined sample of 303 field L dwarfs, we find observationally that 7.6+/-1.6% are younger than 100 Myr. This percentage is in agreement with theoretical predictions once observing biases are taken into account. We find that these young L dwarfs tend to fall in the southern hemisphere (Dec < 0 deg) and may be previously unrecognized, low-mass members of nearby, young associations like Tucana-Horologium, TW Hydrae, beta Pictoris, and AB Doradus. We use a homogeneously observed sample of roughly one hundred and fifty 6300-10000 Angstrom spectra of L and T dwarfs taken with the Low-Resolution Imaging Spectrometer at the W. M. Keck Observatory to examine the strength of the 6708-A Li I line as a function of spectral type and further corroborate the trends noted by Kirkpatrick et al. (2000). We use our low-gravity spectra to investigate the strength of the Li I line as a function of age. The data weakly suggest that for early- to mid-L dwarfs the line strength reaches a maximum for a few 100 Myr, whereas for much older (few Gyr) and much younger (<100 Myr) L dwarfs the line is weaker or undetectable. We show that a weakening of lithium at lower gravities is predicted by model atmosphere calculations, an effect partially corroborated by existing observational data. Larger samples containing L dwarfs of well determined ages are needed to further test this empirically. If verified, this result would reinforce the caveat first cited in Kirkpatrick et al. (2006) that the lithium test should be used with caution when attempting to confirm the substellar nature of the youngest brown dwarfs.

J. Davy Kirkpatrick; Kelle L. Cruz; Travis S. Barman; Adam J. Burgasser; Dagny L. Looper; C. G. Tinney; Christopher R. Gelino; Patrick J. Lowrance; James Liebert; John M. Carpenter; Lynne A. Hillenbrand; John R. Stauffer

2008-08-22T23:59:59.000Z

472

Kinetics for the reaction of hydrogen with a plutonium-1 weight percent gallium alloy powder  

Science Conference Proceedings (OSTI)

Kinetics for the reaction of hydrogen with plutonium-1 w/o gallium were measured using powder prepared ''in situ.'' The rates obeyed a first-order rate law and were independent of temperature from -29/degree/ to 355/degree/C. A pressure dependence proportional to P/sup //one-half/ was observed at pressures less than 1 kPa. From 1 to 70 kPa the pressure dependence rapidly decreased. Total pressure dependence could be accurately described by a Langmuir equation. Results indicate an adsorption-controlled reaction at low pressures and a reaction-controlled process at high pressure. 19 refs.

Stakebake, J.L.

1981-11-01T23:59:59.000Z

473

THE PREPARATION OF PLUTONIUM POWDER BY A HYDRIDING PROCESS-INITIAL STUDIES  

DOE Green Energy (OSTI)

Micron-sized plutonium powder was produced by hydriding massive metal, then grinding and decomposing the hydride. An apparatus containing clean plutonium metal was evacuated to a pressure of 10 mu . Dry oxygen-free hydrogen was introduced and the apparatus placed in a furnace. After the reaction started, the apparatus was removed from the furnace and hydrogen added until the reaction was complete. The hydride was decomposed by heating to 400 deg C. Plutonium metal produced in this manner was porous. (C.J.G.)

Stiffler, G.L.; Curtis, M.H.

1960-03-10T23:59:59.000Z

474

Standard specification for nuclear-grade gadolinium oxide (Gd2O3) powder  

E-Print Network (OSTI)

1.1 This specification provides the chemical and physical requirements for nuclear-grade gadolinium oxide powder intended for subsequent processing and use in nuclear fuel applications, for example, as an addition to uranium dioxide. 1.2 This specification does not include requirements for health and safety. Observance of this specification does not relieve the user of the obligation to be aware of and comply with all federal, state, and local regulations pertaining to possessing, shipping, processing, or using this material. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

American Society for Testing and Materials. Philadelphia

2003-01-01T23:59:59.000Z

475

NOx Reduction Assessment for Tangentially Fired Boilers Burning Powder River Basin Coal  

Science Conference Proceedings (OSTI)

The objective of this project was to assess the feasibility of and the most cost-effective approaches for reducing nitrous oxide (NOx) emissions for tangentially fired boilers burning Powder River Basin (PRB) coal in order to achieve average NOx emission rates of 0.15 lb/mmBtu (110 ppm), or lower. This is typically achievable by a deep level of combustion air staging, which may be possible if operational issues experienced during low combustion air operation (for example, slagging) can be mitigated. Acc...

2010-01-20T23:59:59.000Z

476

Evaluation of Flammability and Explosibility Characteristics of Powder River Basin Coals and Switchgrass  

Science Conference Proceedings (OSTI)

Biomass co-firing is currently a low-cost renewable-energy option; Powder River Basin (PRB) coal is currently a low-sulfur, low-NOx fuel. Both biomass and PRB are very dusty fuels, and with the proper concentrations and an ignition source, these dusts can create powerful explosions. Understanding and measuring their levels of concentration and explosibility will aid in avoiding a high concentration of these dusts in identified power plant locations. This knowledge will help lower the risk of explosion at...

2010-10-29T23:59:59.000Z

477

Statistical evaluation of the effects of fall and winter flows on the spring condition of rainbow and brown trout in the green river downstream of Flaming Gorge Dam.  

DOE Green Energy (OSTI)

Flaming Gorge Dam, a hydroelectric facility operated by the Bureau of Reclamation (Reclamation), is located on the Green River in Daggett County, northeastern Utah. In recent years, single peak releases each day or steady flows have been the operational pattern during the winter period. A double-peak pattern (two flow peaks each day) was implemented during the winter of 2006-2007 by Reclamation. Because there is no recent history of double-peaking at Flaming Gorge Dam, the potential effects of double-peaking operations on the body condition of trout in the dam's tailwater are not known. A study plan was developed that identified research activities to evaluate potential effects from double-peaking operations during winter months. Along with other tasks, the study plan identified the need to conduct a statistical analysis of existing data on trout condition and macroinvertebrate abundance to evaluate potential effects of hydropower operations. This report presents the results of this analysis. We analyzed historical data to (1) describe temporal patterns and relationships among flows, benthic macroinvertebrate abundance, and condition of brown trout (Salmo trutta) and rainbow trout (Oncorhynchus mykiss) in the tailwaters of Flaming Gorge Dam and (2) to evaluate the degree to which flow characteristics (i.e., flow volumes and flow variability) and benthic macroinvertebrate abundance affect the condition of trout in this area. This information, together with further analyses of size-stratified trout data, may also serve as baseline data to which the effects of potential future double-peaking flows can be compared. The condition (length, weight and/or relative weight) of rainbow trout (Oncorhynchus mykiss) at two sites in the Green River downstream of Flaming Gorge Dam (Tailrace and Little Hole) and weight of brown trout (Salmo trutta) at the Little Hole site has been decreasing since 1990 while the abundance of brown trout has been increasing at the two sites. At the same time, flow variability in the river has decreased and the abundance of total benthic macroinvertebrates at the Tailrace site has increased. The condition of trout in spring (averaged across all sampled trout) was positively correlated with fall and winter flow variability (including within-day skewness, within-season skewness and/or change in flow between days) at both locations. No negative correlations between trout condition and any measure of flow variability were detected. The length and weight of rainbow trout at the Little Hole site were negatively correlated with increasing fall and winter flow volume. The condition of brown trout at Little Hole and the condition of brown and rainbow trout at Tailrace were not correlated with flow volume. Macroinvertebrate variables during October were either positively correlated or not correlated with measures of trout condition at the Tailrace and Little Hole sites. With the exception of a positive correlation between taxa richness of macroinvertebrates in January and the relative weight of brown trout at Tailrace, the macroinvertebrate variables during January and April were either not correlated or negatively correlated with measures of trout condition. We hypothesize that high flow variability increased drift by dislodging benthic macroinvertebrates, and that the drift, in turn, resulted in mostly lower densities of benthic macroinvertebrates, which benefited the trout by giving them more feeding opportunities. This was supported by negative correlations between benthic macroinvertebrates and flow variability. Macroinvertebrate abundance (with the exception of ephemeropterans) was also negatively correlated with flow volume. The change in trout condition from fall to spring, as measured by the ratio of spring to fall relative weight, was evaluated to determine their usefulness as a standardized index to control for the initial condition of the fish as they enter the winter period. The ratio values were less correlated with the fall condition values than the spring condition values and did not show the same re

Magnusson, A. K.; LaGory, K. E.; Hayse, J. W.; Environmental Science Division

2009-01-09T23:59:59.000Z

478

Measurement of the electrostrictive coefficients of modified lead magnesium niobate using neutron powder diffraction  

Science Conference Proceedings (OSTI)

Neutron powder diffraction measurements and a constitutive model were used to determine the bulk longitudinal and transverse electrostrictive coefficients (Q{sub ijkl}) for polycrystalline samples of the subject material. Effective single-crystal Q{sub ijkl} were calculated from the powder neutron diffraction data. The resulting values of the three independent Q{sub ijkl}, as determined from the cubic symmetry of the underlying lattice, are Q{sub 3333}=2.1{times}10{sup {minus}2}m{sup 4}/C{sup 2}, Q{sub 3322}={minus}0.87{times}10{sup {minus}2}m{sup 4}/C{sup 2}, and Q{sub 3232}=1.2{times}10{sup {minus}2}m{sup 4}/C{sup 2}. Using these effective single-crystal values, a random ensemble average was used to predict the electromechanical performance of the polycrystalline material. Predicted values of bulk Q{sub 3333}=1.86{times}10{sup {minus}2}m{sup 4}/C{sup 2} and Q{sub 3322}={minus}0.78{times}10{sup {minus}2}m{sup 4}/C{sup 2} are 89{percent} and 87{percent}, respectively, of the effective single-crystal values for Q{sub 3333} and Q{sub 3322}, while measured values of polycrystalline specimens are only {approximately}70{percent} of the single-crystal values. {copyright} {ital 1998 American Institute of Physics.}

Misture, S.T.; Pilgrim, S.M. [New York State College of Ceramics at Alfred University, Alfred, New York 14802 (United States); Hicks, J.C.; Blue, C.T. [Materials, Sensors, and Systems Branch, Code D364, NCCOSC/RDTE Division, San Diego, California 92152-6147 (United States); Payzant, E.A.; Hubbard, C.R. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

1998-03-01T23:59:59.000Z

479

Method of making supercritical fluid molecular spray films, powder and fibers  

DOE Patents (OSTI)

Solid films are deposited, or fine powders formed, by dissolving a solid material into a supercritical fluid solution at an elevated pressure and then rapidly expanding the solution through a heated nozzle having a short orifice into a region of relatively low pressure. This produces a molecular spray which is directed against a substrate to deposit a solid thin film thereon, or discharged into a collection chamber to collect a fine powder. In another embodiment, the temperature of the solution and nozzle is elevated above the melting point of the solute, which is preferably a polymer, and the solution is maintained at a pressure such that, during expansion, the solute precipitates out of solution within the nozzle in a liquid state. Alternatively, a secondary solvent mutually soluble with the solute and primary solvent and having a higher critical temperature than that of primary solvent is used in a low concentration (<20%) to maintain the solute in a transient liquid state. The solute is discharged in the form of long, thin fibers. The fibers are collected at sufficient distance from the orifice to allow them to solidify in the low pressure/temperature region.

Smith, Richard D. (Richland, WA)

1988-01-01T23:59:59.000Z

480

Densification of salt-occluded zeolite a powders to a leach-resistant monolith  

Science Conference Proceedings (OSTI)

Pyrochemical processing of spent fuel from the Integral Fast Reactor (IFR) yields a salt waste of LiCl-KCl that contains approximately 6 wt% fission products, primarily as CsCl and SrCl{sub 2}. Past work has shown that zeolite A will preferentially sorb cesium and strontium and will encapsulate the salt waste in a leach-resistant, radiation-resistant aluminosilicate matrix. However, a method is sill needed to convert the salt-occluded zeolite powders into a form suitable for geologic disposal. We are thus investigating a method that forms bonded zeolite by hot pressing a mixture of glass frit and salt-occluded zeolite powders at 990 K (717{degree}C) and 28 MPa. The leach resistance of the bonded zeolite was measured in static leach tests run for 28 days in 363 K (90{degree}C) deionized water. Normalized release rates of all elements in the bonded zeolite were low, <1 g/m{sup 2} d. Thus, the bonded zeolite may be a suitable waste form for IFR salt waste.

Lewis, M.A.; Fischer, D.F.; Murhpy, C.D.

1993-10-01T23:59:59.000Z

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


481

Niobium-titanium superconductors produced by powder metallurgy having artificial flux pinning centers  

DOE Patents (OSTI)

Superconductors formed by powder metallurgy have a matrix of niobium-titanium alloy with discrete pinning centers distributed therein which are formed of a compatible metal. The artificial pinning centers in the Nb-Ti matrix are reduced in size by processing steps to sizes on the order of the coherence length, typically in the range of 1 to 10 nm. To produce the superconductor, powders of body centered cubic Nb-Ti alloy and the second phase flux pinning material, such as Nb, are mixed in the desired percentages. The mixture is then isostatically pressed, sintered at a selected temperature and selected time to produce a cohesive structure having desired characteristics without undue chemical reaction, the sintered billet is reduced in size by deformation, such as by swaging, the swaged sample receives heat treatment and recrystallization and additional swaging, if necessary, and is then sheathed in a normal conducting sheath, and the sheathed material is drawn into a wire. The resulting superconducting wire has second phase flux pinning centers distributed therein which provide enhanced J.sub.ct due to the flux pinning effects.

Jablonski, Paul D. (Madison, WI); Larbalestier, David C. (Madison, WI)

1993-01-01T23:59:59.000Z

482

Production of Diesel Engine Turbocharger Turbine from Low Cost Titanium Powder  

DOE Green Energy (OSTI)

Turbochargers in commercial turbo-diesel engines are multi-material systems where usually the compressor rotor is made of aluminum or titanium based material and the turbine rotor is made of either a nickel based superalloy or titanium, designed to operate under the harsh exhaust gas conditions. The use of cast titanium in the turbine section has been used by Cummins Turbo Technologies since 1997. Having the benefit of a lower mass than the superalloy based turbines; higher turbine speeds in a more compact design can be achieved with titanium. In an effort to improve the cost model, and develop an industrial supply of titanium componentry that is more stable than the traditional aerospace based supply chain, the Contractor has developed component manufacturing schemes that use economical Armstrong titanium and titanium alloy powders and MgR-HDH powders. Those manufacturing schemes can be applied to compressor and turbine rotor components for diesel engine applications with the potential of providing a reliable supply of titanium componentry with a cost and performance advantage over cast titanium.

Muth, T. R.; Mayer, R. (Queen City Forging)

2012-05-04T23:59:59.000Z

483

Evidence for fluival-controlled coal deposition in the upper Tongue River Member (Fort Union Formation, Paleocene), Powder River Basin, Wyoming.  

E-Print Network (OSTI)

??Recent exploration in the Powder River basin has targeted shallow, coal-bed methane, and basin reserves may be as high as 39 trillion cubic feet. Both (more)

Bauders, Coen M. (Coen Michael)