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Note: This page contains sample records for the topic "deposits estimated rare" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Estimated Rare Earth Reserves and Deposits  

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

Many of the fastest growing clean energy technologies, from batteries to solar panels to magnets, are made with materials that have unique chemical and physical characteristics, including magnetic,...

2

Sequential Importance Sampling for Rare Event Estimation with Computer Experiments  

SciTech Connect

Importance sampling often drastically improves the variance of percentile and quantile estimators of rare events. We propose a sequential strategy for iterative refinement of importance distributions for sampling uncertain inputs to a computer model to estimate quantiles of model output or the probability that the model output exceeds a fixed or random threshold. A framework is introduced for updating a model surrogate to maximize its predictive capability for rare event estimation with sequential importance sampling. Examples of the proposed methodology involving materials strength and nuclear reactor applications will be presented. The conclusions are: (1) Importance sampling improves UQ of percentile and quantile estimates relative to brute force approach; (2) Benefits of importance sampling increase as percentiles become more extreme; (3) Iterative refinement improves importance distributions in relatively few iterations; (4) Surrogates are necessary for slow running codes; (5) Sequential design improves surrogate quality in region of parameter space indicated by importance distributions; and (6) Importance distributions and VRFs stabilize quickly, while quantile estimates may converge slowly.

Williams, Brian J. [Los Alamos National Laboratory; Picard, Richard R. [Los Alamos National Laboratory

2012-06-25T23:59:59.000Z

3

Estimated Rare Earth Reserves and Deposits | Department of Energy  

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

Department of Energy Facilities Department of Energy Facilities Recovery Act Smart Grid Projects Recovery Act Smart Grid Projects 2009 Energy Expenditure Per Person 2009 Energy...

4

Estimated Rare Earth Reserves and Deposits | Department of Energy  

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

Non-powered Dams U.S. Hydropower Potential from Existing Non-powered Dams Creating an Energy Innovation Ecosystem Creating an Energy Innovation Ecosystem Sunshot Rooftop Solar...

5

Estimated Rare Earth Reserves and Deposits | Department of Energy  

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

OPEN 2012 Projects Clean Cities Coalition Regions Clean Cities Coalition Regions Google Crisis Map for Hurricane Sandy Google Crisis Map for Hurricane Sandy Alternative...

6

Rare event simulation and combinatorial optimization using cross entropy: estimation of rare event probabilities using cross-entropy  

Science Conference Proceedings (OSTI)

This paper deals with estimation of probabilities of rare events in static simulation models using a fast adaptive two-stage procedure based on importance sampling and Kullback-Liebler's cross-entropy (CE). More specifically, at the first stage we estimate ...

Tito Homem-de-Mello; Reuven Y. Rubinstein

2002-12-01T23:59:59.000Z

7

Non-analog Monte Carlo estimators for radiation momentum deposition  

SciTech Connect

The standard method for calculating radiation momentum deposition in Monte Carlo simulations is the analog estimator, which tallies the change in a particle's momentum at each interaction with the matter. Unfortunately, the analog estimator can suffer from large amounts of statistical error. In this paper, we present three new non-analog techniques for estimating momentum deposition. Specifically, we use absorption, collision, and track-length estimators to evaluate a simple integral expression for momentum deposition that does not contain terms that can cause large amounts of statistical error in the analog scheme. We compare our new non-analog estimators to the analog estimator with a set of test problems that encompass a wide range of material properties and both isotropic and anisotropic scattering. In nearly all cases, the new non-analog estimators outperform the analog estimator. The track-length estimator consistently yields the highest performance gains, improving upon the analog-estimator figure of merit by factors of up to two orders of magnitude.

Densmore, Jeffery D [Los Alamos National Laboratory; Hykes, Joshua M [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

8

Application of throughfall methods to estimate dry deposition of mercury  

SciTech Connect

Several dry deposition methods for Mercury (Hg) are being developed and tested in our laboratory. These include big-leaf and multilayer resistance models, micrometeorological methods such as Bowen ratio gradient approaches, laboratory controlled plant chambers, and throughfall. We have previously described our initial results using modeling and gradient methods. Throughfall may be used to estimate Hg dry deposition if some simplifying assumptions are met. We describe here the application and initial results of throughfull studies at the Walker Branch Watershed forest, and discuss the influence of certain assumptions on interpretation of the data. Throughfall appears useful in that it can place a lower bound to dry deposition under field conditions. Our preliminary throughfall data indicate net dry deposition rates to a pine canopy which increase significantly from winter to summer, as previously predicted by our resistance model. Atmospheric data suggest that rainfall washoff of fine aerosol dry deposition at this site is not sufficient to account for all of the Hg in net throughfall. Potential additional sources include dry deposited gas-phase compounds, soil-derived coarse aerosols, and oxidation reactions at the leaf surface.

Lindberg, S.E.; Owens, J.G. [Oak Ridge National Lab., TN (United States); Stratton, W. [Earlham Coll., Richmond, IN (United States). Dept. of Chemistry

1992-12-31T23:59:59.000Z

9

Wrinkles in the rare biosphere: Pyrosequencing errors can lead to artificial inflation of diversity estimates  

Science Conference Proceedings (OSTI)

Massively parallel pyrosequencing of the small subunit (16S) ribosomal RNA gene has revealed that the extent of rare microbial populations in several environments, the 'rare biosphere', is orders of magnitude higher than previously thought. One important caveat with this method is that sequencing error could artificially inflate diversity estimates. Although the per-base error of 16S rDNA amplicon pyrosequencing has been shown to be as good as or lower than Sanger sequencing, no direct assessments of pyrosequencing errors on diversity estimates have been reported. Using only Escherichia coli MG1655 as a reference template, we find that 16S rDNA diversity is grossly overestimated unless relatively stringent read quality filtering and low clustering thresholds are applied. In particular, the common practice of removing reads with unresolved bases and anomalous read lengths is insufficient to ensure accurate estimates of microbial diversity. Furthermore, common and reproducible homopolymer length errors can result in relatively abundant spurious phylotypes further confounding data interpretation. We suggest that stringent quality-based trimming of 16S pyrotags and clustering thresholds no greater than 97% identity should be used to avoid overestimates of the rare biosphere.

Kunin, Victor; Engelbrektson, Anna; Ochman, Howard; Hugenholtz, Philip

2009-08-01T23:59:59.000Z

10

DEPOSITION VELOCITY ESTIMATION WITH THE GENII V2 SOFTWARE  

SciTech Connect

In 2010, the Department of Energy (DOE) Chief of Nuclear Safety and Office of Health, Safety and Security (HSS), with the support of industry experts in atmospheric sciences and accident dose consequences analysis, performed detailed analyses of the basis for the dry deposition velocity (DV) values used in the MACCS2 computer code. As a result of these analyses, DOE concluded that the historically used default DV values of 1 centimeter/second (cm/s) for unfiltered/unmitigated releases and 0.1 cm/s for filtered/mitigated releases may not be reasonably conservative for all DOE sites and accident scenarios. HSS recently issued Safety Bulletin 2011-02, Accident Analysis Parameter Update, recommending the use of the newly developed default DV, 0.1 cm/s for an unmitigated/unfiltered release. Alternatively site specific DV values can be developed using GENII version 2 (GENII v2) computer code. Key input parameters for calculating DV values include surface roughness, maximum wind speed for calm, particle size, particle density and meteorological data (wind speed and stability class). This paper will include reasonably conservative inputs, and a truncated parametric study. In lieu of the highly-conservative recommended DV value (0.1cm/s) for unmitigated/unfiltered release, GENII v2 has been used to justify estimated 95th percentile DV values. Also presented here are atmospheric dilution factors ({chi}/Q values) calculated with the MACCS2 code using the DV values form GENII v2, {chi}/Q values calculated directly with GENII v2, and a discussion of these results compare with one another. This paper will give an overview of the process of calculating DV with GENII v2 including a discussion of the sensitivity of input parameters.

Hutchins, H.

2012-04-23T23:59:59.000Z

11

On Estimating Dry Deposition Rates in Complex Terrain  

Science Conference Proceedings (OSTI)

In complex terrain, horizontal advection and filtration through a canopy can add substantially to the vertical diffusion component assumed to be the dominant transfer mechanism in conventional deposition velocity formulations. To illustrate this, ...

Bruce B. Hicks

2008-06-01T23:59:59.000Z

12

A Long-Range Transport Model for East Asia to Estimate Sulfur Deposition in Japan  

Science Conference Proceedings (OSTI)

A long-range transport model for East Asia was developed to estimate the sulfur deposition in Japan. The model is a hybrid type that combines a trajectory model for distant sources with a Eulerian model for nearby sources. The processes of ...

Yoichi Ichikawa; Hiroshi Hayami; Shin-ichi Fujita

1998-10-01T23:59:59.000Z

13

The impact of trade costs on rare earth exports : a stochastic frontier estimation approach.  

SciTech Connect

The study develops a novel stochastic frontier modeling approach to the gravity equation for rare earth element (REE) trade between China and its trading partners between 2001 and 2009. The novelty lies in differentiating betweenbehind the border' trade costs by China and theimplicit beyond the border costs' of China's trading partners. Results indicate that the significance level of the independent variables change dramatically over the time period. While geographical distance matters for trade flows in both periods, the effect of income on trade flows is significantly attenuated, possibly capturing the negative effects of financial crises in the developed world. Second, the total export losses due tobehind the border' trade costs almost tripled over the time period. Finally, looking atimplicit beyond the border' trade costs, results show China gaining in some markets, although it is likely that some countries are substituting away from Chinese REE exports.

Sanyal, Prabuddha; Brady, Patrick Vane; Vugrin, Eric D.

2013-09-01T23:59:59.000Z

14

The impact of trade costs on rare earth exports : a stochastic frontier estimation approach.  

Science Conference Proceedings (OSTI)

The study develops a novel stochastic frontier modeling approach to the gravity equation for rare earth element (REE) trade between China and its trading partners between 2001 and 2009. The novelty lies in differentiating betweenbehind the border' trade costs by China and theimplicit beyond the border costs' of China's trading partners. Results indicate that the significance level of the independent variables change dramatically over the time period. While geographical distance matters for trade flows in both periods, the effect of income on trade flows is significantly attenuated, possibly capturing the negative effects of financial crises in the developed world. Second, the total export losses due tobehind the border' trade costs almost tripled over the time period. Finally, looking atimplicit beyond the border' trade costs, results show China gaining in some markets, although it is likely that some countries are substituting away from Chinese REE exports.

Sanyal, Prabuddha; Brady, Patrick Vane; Vugrin, Eric D.

2013-09-01T23:59:59.000Z

15

Can sulfate fluxes in forest canopy throughfall be used to estimate atmospheric sulfur deposition? - A summary of recent results  

Science Conference Proceedings (OSTI)

The flux of sulfate is forest throughfall and stemflow (the sum of which is designated here as TF) may be an indicator of the atmospheric deposition of S, particularly if foliar leaching of internal plant S is small relative to washoff of deposition. Extensive data from 13 forests indicate that annual sulfate fluxes in TF and in atmospheric deposition are very similar, and recent studies with {sup 35}S tracers indicate that leaching is only a few percent of total TF. However, some short-term deposition/TF comparisons show large differences, and there remain questions about interpretation of tracer results. Considering the data, we conclude that TF may be used under some conditions to estimate deposition within acceptable uncertainty limits, but that some assumptions need further testing. If TF does reflect deposition, these data suggest that commonly used methods and models seriously underestimate total S deposition at some sites.

Lindberg, Steven Eric [ORNL; Cape, J. N. [Institute of Terrestrial Ecology; Garten Jr, Charles T [ORNL; Ivens, W. [University of Utrecht

1992-06-01T23:59:59.000Z

16

Dry Deposition Velocity Estimation for the Savannah River Site: Part 1 – Parametric Analysis  

Science Conference Proceedings (OSTI)

Values for the dry deposition velocity of airborne particles were estimated with the GENII Version 2.10 computer code for the Savannah River site using assumptions about surface roughness parameters and particle size and density. Use of the GENII code is recommended by the U.S. Department of Energy for this purpose. Meteorological conditions evaluated include atmospheric stability classes D, E, and F and wind speeds of 0.5, 1.0, 1.5, and 3.0 m/s. Local surface roughness values ranging from 0.03 to 2 meters were evaluated. Particles with mass mean diameters of 1, 5, and 10 microns and densities of 1, 3, and 5 g/cm3 were evaluated.

Napier, Bruce A.

2012-01-16T23:59:59.000Z

17

Review of Methods and Tools for Estimating Atmospheric Deposition of Tritium at Nuclear Power Plants  

Science Conference Proceedings (OSTI)

As part of a groundwater protection program, nuclear power plant operators must understand the sources and concentrations of tritium in on-site groundwater. Low levels of tritium from gaseous effluents and evaporating liquid effluents held in on-site impoundments or ponds can impact the tritium concentration in groundwater through rain washout. This report reviews the methods and tools necessary to quantify the impact of such atmospherically deposited tritium in groundwater.

2009-12-08T23:59:59.000Z

18

An Estimate of the Momentum Deposition in the Lower Thermosphere by the Observed Diurnal Tide  

Science Conference Proceedings (OSTI)

This paper reports a calculation of the acceleration of the zonal mean flow induced by dissipating tides in the equatorial lower thermosphere. Estimates of the gravest symmetric gravitational Hough mode (1,1) of the migrating diurnal tide are ...

Ruth S. Lieberman; Paul B. Hays

1994-10-01T23:59:59.000Z

19

Estimation of atmospheric deposition in coastal Jalisco, western Mexico, using an epiphytic plant (Tillandsia recurvata L. Bromeliaceae)  

E-Print Network (OSTI)

Ttllandsia recurvata was used as a biomonitor to ographics. estimate the trace element atmospheric deposition in a tropical dry forest of the Pacific coast of Jalisco, in western Mexico. The plant samples were initially collected gem a population at Las Moras, near Zacoalco in central Jalisco. They were deployed it: January (1993) and subsequently retrieved in June (1993), at three locations: at the Chamela Biology Station on the coast, along a transect at increasing distances from the sea, and in Guadalajara, a large, industrial city. Both plants and surface soil samples were chemically analyzed using Neuron Activation Analysis. Also, Inductively Coupled Plasma Emission Spectroscopy was performed on plant samples. Concentrations of most elements in T. recurvata samples at the Chamela reserve (i.e., Ce, Co, Cr, Fe, Hf, La, Pb, Sc, Th, and Zn) were among the lowest when compared with values reviewed for epiphytes in the literature. They were also lower than the concentrations of the plants deployed in Guadalajara. This identifies Chamela as unpolluted and useful as a baseline. Conversely, elemental concentrations of Br, Ca, and Na were higher in Chiels than in the other studies, evidencing a strong marine influence. A marine source was found for B (in part), Bt, Ca, Mg, Na, S, and Sr. A soil origin was found for A1, Ba, Ce, Co, Eu, Fe, Hf, La, Sc, Sm, and Th, and an anthropogenic origin was concluded for B (in part), Cr, Cs, Cu, K, Mn, Pb, Rb, V, and Zn. A north-south deposition pattern was found for most elements, with altitude and tree cover influencing atmospheric deposition at Chamela.

Sahagun Godinez, Eduardo

1998-01-01T23:59:59.000Z

20

VARIATION IN EROSION/DEPOSITION RATES OVER THE LAST FIFTTY YEARS ON ALLUVIAL FAN SURFACES OF L. PLEISTOCENE-MID HOLOCENE AGE, ESTIMATIONS USING 137CS SOIL PROFILE DATA, AMARGOSA VALLEY, NEVADA  

DOE Green Energy (OSTI)

Variations in erosion and deposition for the last fifty years (based on estimates from 137Cs profiles) on surfaces (Late Pleistocene to Late Holocene in age) making up the Fortymile Wash alluvial fan south of Yucca Mountain, is a function of surface age and of desert pavement development or absence. For purposes of comparing erosion and deposition, the surfaces can be examined as three groups: (1) Late Pleistocene surfaces possess areas of desert pavement development with thin Av or sandy A horizons, formed by the trapping capabilities of the pavements. These zones of deposition are complemented by coppice dune formation on similar parts of the surface. Areas on the surface where no pavement development has occurred are erosional in nature with 0.0 +/- 0.0 cm to 1.5 +/- 0.5 cm of erosion occurring primarily by winds blowing across the surface. Overall these surfaces may show either a small net depositional gain or small erosional loss. (2) Early Holocene surfaces have no well-developed desert pavements, but may have residual gravel deposits in small areas on the surfaces. These surfaces show the most consistent erosional surface areas on which it ranges from 1.0 +/-.01 cm to 2.0+/- .01 cm. Fewer depositional forms are found on this age of surface so there is probably a net loss of 1.5 cm across these surfaces. (3) The Late Holocene surfaces show the greatest variability in erosion and deposition. Overbank deposition during floods cover many edges of these surfaces and coppice dune formation also creates depositional features. Erosion rates are highly variable and range from 0.0 +/- 0.0 to a maximum of 2.0+/-.01. Erosion occurs because of the lack of protection of the surface. However, the common areas of deposition probably result in the surface having a small net depositional gain across these surfaces. Thus, the interchannel surfaces of the Fortymile Wash fan show a variety of erosional styles as well as areas of deposition. The fan, therefore, is a dynamic system that primarily responds to the incising of the channels into the upper fan surface, and the development of protecting desert pavements with time.

C. Harrington; R. Kelly; K.T. Ebert

2005-08-26T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Perspectives on Deposition Velocity  

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

Deposition Deposition Velocity ... Going down the rabbit hole to explain that sinking feeling Brian DiNunno, Ph.D. Project Enhancement Corporation June 6 th , 2012 Discussion Framework ï‚— Development of the HSS Deposition Velocity Safety Bulletin ï‚— Broader discussion of appropriate conservatism within dispersion modeling and DOE-STD-3009 DOE-STD-3009 Dose Comparison "General discussion is provided for source term calculation and dose estimation, as well as prescriptive guidance for the latter. The intent is that calculations be based on reasonably conservative estimates of the various input parameters." - DOE-STD-3009, Appendix A.3 DOE-STD-3009 Dispersion

22

Rare Earth Elements in Transportation  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

23

Rare earth gas laser  

DOE Patents (OSTI)

A high energy gas laser with light output in the infrared or visible region of the spectrum is described. Laser action is obtained by generating vapors of rare earth halides, particularly neodymium iodide or, to a lesser extent, neodymium bromide, and disposing the rare earth vapor medium in a resonant cavity at elevated temperatures; e.g., approximately 1200/sup 0/ to 1400/sup 0/K. A particularly preferred gaseous medium is one involving a complex of aluminum chloride and neodymium chloride, which exhibits tremendously enhanced vapor pressure compared to the rare earth halides per se, and provides comparable increases in stored energy densities.

Krupke, W.F.

1975-10-31T23:59:59.000Z

24

About Rare Earth Metals | Ames Laboratory  

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

About Rare Earth Metals About Rare Earth Metals What Are Rare Earths? Ames Laboratory's Materials Preparation Center The Ames Process for Purification of Rare...

25

(Acidic deposition and the environment)  

Science Conference Proceedings (OSTI)

The travelers presented several papers at the Fourth International Conference on Acidic Deposition. These covered the following topics: atmospheric chemistry and deposition of airborne nitrogen compounds, soil solution chemistry in high-elevation spruce forests, and forest throughfall measurements for estimating total sulfur deposition to ecosystems. In addition, S. E. Lindberg was invited to organize and chair a conference session on Throughfall and Stemflow Experiments, and to present an invited lecture on Atmospheric Deposition and Canopy Interactions of Metals and Nitrogen in Forest Ecosystems: The Influence of Global Change'' at the 110th Anniversary Celebration of the Free University of Amsterdam.

Garten, C.T.; Lindberg, S.E.; Van Miegroet, H.

1990-10-24T23:59:59.000Z

26

Rare earth thermoelectrics  

DOE Green Energy (OSTI)

The author reviews the thermoelectric properties of metallic compounds which contain rare-earth atoms. They are the group of metals with the largest value ever reported of the Seebeck coefficient. An increase by 50% of the Seebeck would make these compounds useful for thermoelectric devices. The largest Seebeck coefficient is found for compounds of cerium (e.g., CePd{sub 3}) and ytterbium (e.g., YbAl{sub 3}). Theoretical predictions are in agreement with the maximum observed Seebeck. The author discusses the theoretical model which has been used to calculate the Seebeck coefficient. He is solving this model for other configurations (4f){sup n} of rare-earth ground states.

Mahan, G.D.

1997-09-01T23:59:59.000Z

27

Rare B Decays  

SciTech Connect

Recent results from Belle and BaBar on rare B decays involving flavor-changing neutral currents or purely leptonic final states are presented. Measurements of the CP asymmetries in B {yields} K*{gamma} and b {yields} s{gamma} are reported. Also reported are updated limits on B{sup +} {yields} K{sup +}{nu}{bar {nu}}, B{sup +} {yields} {tau}{sup +}{nu}, B{sup +} {yields} {mu}{sup +}{nu} and the recent measurement of B {yields} X{sub s}{ell}{sup +}{ell}{sup -}.

Jackson, P.D.; /Victoria U.

2006-02-24T23:59:59.000Z

28

Rare Decays of the $?^{'}$  

E-Print Network (OSTI)

We have searched for the rare decays of the eta prime meson to e+ e- eta, e+ e- pizero, e+ e- gamma, and e mu in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb^-1 of e+ e- collisions at the Cornell Electron Storage Ring. We find no signal in any of these modes, and set 90% confidence level upper limits on their branching fractions of 2.4 X 10^-3, 1.4 X 10^-3, 0.9 X 10^-3, and 4.7 X 10^-4, respectively. We also investigate the Dalitz plot of the common decay of the eta prime to pi+ pi- eta. We fit the matrix element with the Particle Data Group parameterization and find Re(alpha) = -0.021 +- 0.025, where alpha is a linear function of the kinetic energy of the eta.

R. A. Briere

1999-07-23T23:59:59.000Z

29

Magnetism of rare earth epitaxial films and rare earth based ...  

Science Conference Proceedings (OSTI)

... The cases of heavy and light rare earth will be successively presented, the latter being of particular interest because ... Back to Seminar Home Page. ...

30

Deposition Process  

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

Pulsed Plasma Processing Pulsed Plasma Processing NEW: Downloadable: Invited Talk "Pulsed Metal Plasmas," presented at the 2006 AVS Meeting, San Francisco, California, November 15, 2006. (PDF, file size 8 MB). Plasma Sources for Window Coatings Deposition processes for low-emittance and solar control coatings can be improved through the use of advanced plasma technology developed at LBNL. A new type of constricted glow-discharge plasma source was selected for the 1997 R&D 100 Award. Invented by LBNL researchers Andre Anders, Mike Rubin, and Mike Dickinson, the source was designed to be compatible with industrial vacuum deposition equipment and practice. Construction is simple, rugged and inexpensive. It can operate indefinitely over a wide range of chamber pressure without any consumable parts such as filaments or grids. Several different gases including Argon, Oxygen and Nitrogen have been tested successfully.

31

Rare Earths from Monazite - Indian Experience  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

32

Flotation Flowsheet Development for Avalon Rare Metal's ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

33

Extractive Metallurgy of Rare Earths  

Science Conference Proceedings (OSTI)

Jan 24, 2006 ... The extractive metallurgy of the rare-earth elements has several features that make it unique—a variety of both input ores and final products, ...

34

Session III: Rare Earth Recycling and Hydrometallurgy  

Science Conference Proceedings (OSTI)

... Dresden and TU Dresden; 2Leibniz-Institute for Solid State and Materials Research Dresden; 3Korea Institute of Rare Metals; 4Korea Institute of Rare Metal

35

Nitrogen Deposition Data Available  

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

Nitrogen Deposition Data Available This data set, prepared by Elizabeth Holland and colleagues, contains data for wet and dry nitrogen-species deposition for the United States and...

36

Chemical characteristics of some major uranium deposits in western USA  

SciTech Connect

Multi-element chemical analyses of several thousand samples were retrieved from the US Geological Survey's computerized Rock Analysis Storage System and used to estimate the average abundances of various elements in each of several types of uranium deposits, in altered rocks associated with some of these deposits, and in unmineralized parts of the various host rocks. Deposits for which results are presented include the tabular deposits in the Morrison Formation, Ambrosia Lake district, New Mexico; secondary deposits in the Ambrosia Lake district; tabular deposits in the Morrison Formation of the Henry Mountains, Utah; tabular deposits in the Chinle Formation in Utah and Colorado; roll-type deposits in Tertiary rocks from the Texas Gulf district; roll-type deposits in the Tertiary basins of Wyoming; tabular deposits in the Entrada Sandstone in Colorado; and a vein-type deposit in crystalline rocks of the Front Range of Colorado. Statistical treatment of the data identified elements that were notably more or less abundant in the deposits and altered rocks than in the unmineralized parts of the host rocks. Comparisons of the mean abundances of elements in the deposits show that the chemical composition of roll-type deposits varies greatly even among deposits in the same district. By contrast, the chemical characteristics of tabular deposits display little variation; the Ambrosia Lake tabular deposits and those of the Henry Mountains district are particularly similar. The data place some constraints on the geochemical aspects of genetic models and suggest certain elements as potential prospecting guides.

Spirakis, C.S.; Pierson, C.T.

1984-04-01T23:59:59.000Z

37

Rare B decays at CDF  

SciTech Connect

The confidence level limits of the CDF search for the B{sub s}{sup 0} and B{sub d}{sup 0} {yields} {mu}{sup +}{mu}{sup -} rare decays and the branching ratio measurement of B{sub s}{sup 0} {yields} D{sub s}{sup +} D{sub s}{sup -} are presented.

Farrington, Sinead M.; /Liverpool U.

2006-10-01T23:59:59.000Z

38

Modeling the Dry Deposition Velocity of Sulfur Dioxide and Sulfate in Asia  

Science Conference Proceedings (OSTI)

The dry deposition model was created to estimate SO2 and sulfate dry deposition velocities over nine land use types in Asia. The study domain is 20°S–50°N, 39°–154°E. Monthly averaged 1° × 1° dry deposition velocities are estimated for four ...

Yiwen Xu; Gregory R. Carmichael

1998-10-01T23:59:59.000Z

39

COG: local decomposition for rare class analysis  

Science Conference Proceedings (OSTI)

Given its importance, the problem of predicting rare classes in large-scale multi-labeled data sets has attracted great attention in the literature. However, rare class analysis remains a critical challenge, because there is no natural way developed ... Keywords: K-means clustering, Local clustering, Rare class analysis, Support vector machines (SVMs)

Junjie Wu; Hui Xiong; Jian Chen

2010-03-01T23:59:59.000Z

40

Production method for making rare earth compounds  

DOE Patents (OSTI)

A method of making a rare earth compound, such as a earth-transition metal permanent magnet compound, without the need for producing rare earth metal as a process step, comprises carbothermically reacting a rare earth oxide to form a rare earth carbide and heating the rare earth carbide, a compound-forming reactant (e.g. a transition metal and optional boron), and a carbide-forming element (e.g. a refractory metal) that forms a carbide that is more thermodynamically favorable than the rare earth carbide whereby the rare earth compound (e.g. Nd.sub.2 Fe.sub.14 B or LaNi.sub.5) and a carbide of the carbide-forming element are formed.

McCallum, R. William (Ames, IA); Ellis, Timothy W. (Ames, IA); Dennis, Kevin W. (Ames, IA); Hofer, Robert J. (Ames, IA); Branagan, Daniel J. (Ames, IA)

1997-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Rare Decays of the $\\eta^{'}$  

E-Print Network (OSTI)

We have searched for the rare decays of the eta prime meson to e+ e- eta, e+ e- pizero, e+ e- gamma, and e mu in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb^-1 of e+ e- collisions at the Cornell Electron Storage Ring. We find no signal in any of these modes, and set 90% confidence level upper limits on their branching fractions of 2.4 X 10^-3, 1.4 X 10^-3, 0.9 X 10^-3, and 4.7 X 10^-4, respectively. We also investigate the Dalitz plot of the common decay of the eta prime to pi+ pi- eta. We fit the matrix element with the Particle Data Group parameterization and find Re(alpha) = -0.021 +- 0.025, where alpha is a linear function of the kinetic energy of the eta.

Briere, R A; Ford, W T; Gritsan, A; Krieg, H; Roy, J D; Smith, J G; Alexander, J P; Baker, R; Bebek, C; Berger, B E; Berkelman, K; Blanc, F; Boisvert, V; Cassel, David G; Dickson, M; Von Dombrowski, S; Drell, P S; Ecklund, K M; Ehrlich, R; Foland, A D; Gaidarev, P B; Galik, R S; Gibbons, L K; Gittelman, B; Gray, S W; Hartill, D L; Heltsley, B K; Hopman, P I; Jones, C D; Kreinick, D L; Lee, T; Liu, Y; Meyer, T O; Mistry, N B; Ng, C R; Nordberg, E; Patterson, J R; Peterson, D; Riley, D; Thayer, J G; Thies, P G; Valant-Spaight, B L; Warburton, A; Avery, P; Lohner, M; Prescott, C; Rubiera, A I; Yelton, J; Zheng, J; Brandenburg, G; Ershov, A; Gao, Y S; Kim, D Y J; Wilson, R; Browder, T E; Li, Y; Rodríguez, J L; Yamamoto, H; Bergfeld, T; Eisenstein, B I; Ernst, J; Gladding, G E; Gollin, G D; Hans, R M; Johnson, E; Karliner, I; Marsh, M A; Palmer, M; Plager, C; Sedlack, C; Selen, M; Thaler, J J; Williams, J; Edwards, K W; Janicek, R; Patel, P M; Sadoff, A J; Ammar, R; Baringer, P; Bean, A; Besson, D; Coppage, D; Davis, R; Kotov, S A; Kravchenko, I V; Kwak, N; Zhao, X; Anderson, S; Frolov, V V; Kubota, Y; Lee, S J; Mahapatra, R; O'Neill, J J; Poling, R A; Riehle, T; Smith, A; Ahmed, S; Alam, M S; Athar, S B; Jian, L; Ling, L; Mahmood, A H; Saleem, M; Timm, S; Wappler, F; Anastassov, A; Duboscq, J E; Gan, K K; Gwon, C; Hart, T; Honscheid, K; Kagan, H; Kass, R; Lorenc, J; Schwarthoff, H; Spencer, M B; Von Törne, E; Zoeller, M M; Richichi, S J; Severini, H; Skubic, P L; Undrus, A E; Bishai, M; Chen, S; Fast, J; Hinson, J W; Lee, J; Menon, N; Miller, D H; Shibata, E I; Shipsey, I P J; Kwon, Y; Lyon, A L; Thorndike, E H; Jessop, C P; Lingel, K; Marsiske, H; Perl, Martin Lewis; Savinov, V; Ugolini, D W; Zhou, X; Coan, T E; Fadeev, V; Korolkov, I Ya; Maravin, Y; Narsky, I; Stroynowski, R; Ye, J; Wlodek, T; Artuso, M; Ayad, R; Dambasuren, E; Kopp, S E; Majumder, G; Moneti, G C; Mountain, R; Schuh, S; Skwarnicki, T; Stone, S; Titov, A; Viehhauser, G; Wang, J C; Wolf, A; Wu, J; Csorna, S E; McLean, K W; Marka, S; Xu, Z; Godang, R; Kinoshita, K; Lai, I C; Pomianowski, P A; Schrenk, S; Bonvicini, G; Cinabro, D; Greene, R; Perera, L P; Zhou, G J; Chan, S; Eigen, G; Lipeles, E; Schmidtler, M; Shapiro, A; Sun, W M; Urheim, J; Weinstein, A J; Würthwein, F; Jaffe, D E; Masek, G E; Paar, H P; Potter, E M; Prell, S; Sharma, V; Asner, D M; Eppich, A; Gronberg, J B; Hill, T S; Lange, D J; Morrison, R J; Nelson, T K; Richman, J D; Roberts, D

2000-01-01T23:59:59.000Z

42

Overview of rare K decays  

Science Conference Proceedings (OSTI)

The status and future prospects of searches for and studies of forbidden and highly suppressed K decays are reviewed. Here the author discusses three areas of recent activity in rare K decay. These are lepton-flavor violating decays, which are entirely forbidden in the Standard Model, K{sub S} {yields} {pi}{sup +}{pi}{sup {minus}}{pi}{sup 0}, which is of interest from the point of view of CP-violation, and `one loop` decays of the form K{sup 0,{+-}} {yields} ({pi}{sup 0,{+-}})l{bar l}, that can throw light on Standard Model CP-violation and determine parameters such as V{sub td}.

Littenberg, L.

1995-05-01T23:59:59.000Z

43

Rare Earth Composite Magnets with Increased Resistivity - Energy ...  

Dielectric rare earth fluorides are blended with rare earth magnet powders to produce high-resistivity fluoride composite rare earth magnets.

44

direct_deposit_111609  

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

PROTECT YOUR BANKING INFORMATION: PROTECT YOUR BANKING INFORMATION: DO NOT complete this form until you are ready to submit it to the Payroll Department. DIRECT DEPOSIT REQUEST Directions: 1. Provide required information neatly, legibly; 2. If Checking Account Direct Deposit, include a voided check. a. DO NOT submit a deposit slip! 3. If Savings Account Direct Deposit, include a copy of savings card. 4. Sign this form; 5. Inter-office mail it to Craft Payroll at "P238." DIRECT DEPOSITION AUTHORIZATION I hereby authorize Los Alamos National Laboratory, hereinafter called The Laboratory, to initiate credit entries and, if necessary, debit entries and adjustments for any credit entries in error to my account listed on this form. If deposit is for:

45

Rare Earth Metals and Alloys | Ames Laboratory  

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

Mpc » Rare Earth Metals and Alloys Mpc » Rare Earth Metals and Alloys Rare Earth Metals and Alloys Terbium (Tb) and Cerium (Ce) phosphors in your computer screen allow you to see GREEN. Europium (Eu) is the source of the RED light and BLUE emitted by our display. The Ames Laboratory has been actively involved in the preparation of very pure rare earth metals since the early 1940's when Dr. Frank H. Spedding and his group of pioneers developed the ion-exchange process, a technique that separates the "fraternal fifteen" plus yttrium and scandium. As a result of this and subsequent work, high-purity oxides are available from which high-purity rare earth metals can be prepared. In most cases, the rare earth oxides are first converted to their respective fluorides and are then reduced metallothermicaly on a kilogram

46

Source apportionment of wet sulfate deposition in eastern North America  

E-Print Network (OSTI)

An analytical model of long distance transport of air pollutants (Fay and Rosenzweig, 1980) has been adapted for the estimation of long term (e.g. annual) wet sulfate deposition in eastern N. America. The model parameters ...

Fay, James A.

1985-01-01T23:59:59.000Z

47

Improved method for preparing rare earth sesquichalcogenides  

DOE Patents (OSTI)

An improved method for the preparation of high purity rare earth sesquichalcogenides is described. The rare earth, as one or more pieces of the metal, is sealed under a vacuum with a stoichiometric amount of sulfur or selenium and a small amount of iodine into a quartz reaction vessel. The sealed vessel is then heated to above the vaporization temperature of the chalcogen and below the melting temperature of the rare earth metal and maintained until the product has been formed. The iodine is then vaporized off leaving a pure product. The rare earth sulfides and selenides thus formed are useful as semiconductors and as thermoelectric generators. 3 tables.

Takeshita, T.; Beaudry, B.J.; Gschneidner, K.A. Jr.

1982-04-14T23:59:59.000Z

48

Corrosion Protection Mechanisms of Rare-earth Based Inhibitors in ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

49

Assessment of Various Processes for Rare Earth Elements Recovery I  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

50

Assessment and Management of Radioactivity in Rare Earth ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

51

Rare Earth–Related Research & Developments Networks At Work  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

52

High Density Nanocrystalline Rare Earth and Dysprosium-free ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

53

Understanding the Structural Stability of Rare-earth Containing ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

54

Crystallization of Rare Earth Solution by Ammonium Bicarbonate  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

55

Hydrometallurgical Plant Design Parameters for the Avalon Rare ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

56

Advance in Solvent Extraction and Separation of Rare Earths  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

57

A Process Route for the Sarfartoq Rare Earth Project, Greenland  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

58

Recovery of Rare Earths from Permanent Magnets and Phosphors ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

59

Recycling of Rare Earth Elements for the Synthesis of Permanent ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

60

Application of Ionic Liquid Extractants on Rare Earths Green ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

Note: This page contains sample records for the topic "deposits estimated rare" 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

Two Exotic and Unique Families of Rare Earth Intermetallic ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

62

Radionuclide deposition control  

DOE Patents (OSTI)

The deposition of radionuclides manganese-54, cobalt-58 and cobalt-60 from liquid sodium coolant is controlled by providing surfaces of nickel or high nickel alloys to extract the radionuclides from the liquid sodium, and by providing surfaces of tungsten, molybdenum or tantalum to prevent or retard radionuclide deposition.

Brehm, William F. (Richland, WA); McGuire, Joseph C. (Richland, WA)

1980-01-01T23:59:59.000Z

63

Geochemical tracers of processes affecting the formation of seafloor hydrothermal fluids and deposits in the Manus back-arc basin  

E-Print Network (OSTI)

Systematic differences in trace element compositions (rare earth element (REE), heavy metal, metalloid concentrations) of seafloor vent fluids and related deposits from hydrothermal systems in the Manus back-arc basin ...

Craddock, Paul R

2009-01-01T23:59:59.000Z

64

BWR Fuel Deposit Evaluation  

Science Conference Proceedings (OSTI)

With zinc injection to BWR feedwater for plant radiation dose reduction, fuel deposits often contain significant amounts of zinc and the inner layers of deposits become more adherent to the cladding. Fuel surveillance programs have revealed thick tenacious crud with surface spallation at several plants. This project determined the chemical composition and morphological features of crud flake samples from Duane Arnold Cycle 17 and Browns Ferry 2 Cycle 12 and compared the data with those obtained from othe...

2005-12-07T23:59:59.000Z

65

EMSL: Capabilities: Deposition and Microfabrication  

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

Deposition and Microfabrication Deposition and Microfabrication Additional Information Meet the Deposition and Microfabrication Experts Related EMSL User Projects Deposition and Microfabrication Tools are Applied to all Science Themes Deposition and Microfabrication brochure Designed to augment research important to a variety of disciplines, EMSL's Deposition and Microfabrication Capability tackles serious scientific challenges from a microscopic perspective. From deposition instruments that emphasize oxide films and interfaces to a state-of-the-art microfabrication suite, EMSL has equipment to tailor surfaces, as diverse as single-crystal thin films or nanostructures, or create the microenvironments needed for direct experimentation at micron scales. Users benefit from coupling deposition and microfabrication applications

66

Atmospheric Deposition of Tritium at Nuclear Power Plants  

Science Conference Proceedings (OSTI)

Tritium source terms at nuclear power plants consist of several sources that include plant vents and cooling impoundments, cooling towers, and treatment ponds. Cooling lakes and reservoirs can be sources of airborne tritium. Methods are presented for estimating these source terms and predicting resulting deposition of tritium using metrological models and for estimating infiltration of tritium using hydrogeological models.

2010-12-16T23:59:59.000Z

67

NEUP Award Recipients | Department of Energy  

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

Rare Earth Reserves and Deposits Estimated Rare Earth Reserves and Deposits Accelerating Offshore Wind Development Accelerating Offshore Wind Development Concentrating Solar Power...

68

Rare Earth Extraction by Molten Oxide Electrolysis  

Science Conference Proceedings (OSTI)

Symposium, Production, Refining and Recycling of Rare Earth Metals ... Electrolysis in molten halides is an established method for the reduction but requires ... Recycling of Different Sintered Magnet Grades by Hydrogen Processing Yielding ...

69

Rare Earth Metal research, at DOE  

Office of Scientific and Technical Information (OSTI)

Energy Citations Database - Intermultiplet transitions in rare-earth metals DOE Green Energy - LaNi.sub.5 is-based metal hydride electrode in Ni-MH rechargeable cells...

70

Ternary rare earth-lanthanide sulfides  

DOE Patents (OSTI)

A new ternary rare earth sulfur compound having the formula: La.sub.3-x M.sub.x S.sub.4 where M is a rare earth element selected from the group europium, samarium and ytterbium and x=0.15 to 0.8. The compound has good high-temperature thermoelectric properties and exhibits long-term structural stability up to 1000.degree. C.

Takeshita, Takuo (Omiya, JP); Gschneidner, Jr., Karl A. (Ames, IA); Beaudry, Bernard J. (Ames, IA)

1987-01-06T23:59:59.000Z

71

Instrument Series: Deposition and Microfabrication  

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

Deposition and Microfabrication Deposition and Microfabrication Sputter Deposition System Only available at EMSL, the Discovery ® Deposition System has been customized to be a fully automated multi-functional "hybrid" instrument with several modes for thin film processing, including multi-target sputtering, effusion cell deposition, electron beam deposition, and in-situ reflection high-energy electron diffraction (RHEED) materials characterization. Unlike most systems, the Discovery ® Deposition System's unique configuration offers operational flexibility, efficiency, and control, allowing a range of applications and materials to be processed simultaneously. Because it is software controlled, users can provide their own "recipes" and have a complete log of what happens throughout the

72

Cathodic Arc Plasma Deposition  

Office of Scientific and Technical Information (OSTI)

Cathodic Arc Plasma Deposition Cathodic Arc Plasma Deposition André Anders Lawrence Berkeley National Laboratory, University of California, 1 Cyclotron Road, Mailstop 53, Berkeley, California 94720 aanders@lbl.gov Abstract Cathodic arc plasma deposition is one of oldest coatings technologies. Over the last two decades it has become the technology of choice for hard, wear resistant coatings on cutting and forming tools, corrosion resistant and decorative coatings on door knobs, shower heads, jewelry, and many other substrates. The history, basic physics of cathodic arc operation, the infamous macroparticle problem and common filter solutions are reviewed. Cathodic arc plasmas stand out due to their high degree of ionization, with important consequences for film nucleation, growth, and efficient utilization of substrate bias. The

73

Rare-Earth Free Permanent Magnets - Programmaster.org  

Science Conference Proceedings (OSTI)

However, availability of rare-earth elements is a potential barrier to motor and generator applications. Thus, aiming at developing magnets without rare-earth ...

74

Preparations of rare earth-iron alloys by thermite reduction  

DOE Patents (OSTI)

An improved method for the preparation of high-purity rare earth-iron alloys by the aluminothermic reduction of a mixture of rare earth and iron fluorides.

Schmidt, Frederick A. (Ames, IA); Peterson, David T. (Ames, IA); Wheelock, John T. (Nevada, IA)

1986-09-16T23:59:59.000Z

75

An Application of Sequence Stratigraphy in Modelling Oil Yield Distribution: The Stuart Oil Shale Deposit, Queensland, Australia.  

E-Print Network (OSTI)

??The Stuart Oil Shale Deposit is a major oil shale resource located near Gladstone on the central Queensland coast. It contains an estimated 3.0 billion… (more)

Pope, Graham John

2005-01-01T23:59:59.000Z

76

Rapporteur's Report - workshop on rare earth elements  

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

Trans-Atlantic Workshop on Rare Earth Elements and Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future Hosted by the MIT Energy Initiative, cambridge, Massachusetts december 3, 2010 Introduction The objective of the workshop was to exchange views and information on the material security challenges of rare earths and other elements critical for clean energy generation and use. This includes the description of current research topics around the supply chain and end uses, and to identify opportunities for Trans-Atlantic research cooperation. The workshop consisted of a series of brief presentations by researchers in the US and Europe, followed by a discussion of possible areas of collaboration proposed by the co-chairs. A list of the presentations and the agenda for the day is appended with this document.

77

DOE launches rare earth metals research hub  

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

ATL011113_hub ATL011113_hub 01/11/2013 DOE launches rare earth metals research hub Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Printer-friendly Europium, a rare earth element that has the same relative hardness of lead, is used to create fluorescent lightbulbs. With no proven substitutes, europium is considered critical to the clean energy economy. Photo courtesy of the Ames Laboratory. High Resolution Image The Department of Energy has launched a research hub that focuses on solutions to the domestic shortages of rare earth metals and other materials critical for U.S. energy security. Housed at Ames Laboratory in Iowa, Lawrence Livermore has been involved in establishing this Energy Innovation Hub since its conception more than two years ago. In 2010, on behalf of DOE, LLNL hosted the first U.S.-Japan

78

Rayleigh Scattering in Rare Gas Liquids  

E-Print Network (OSTI)

The Rayleigh scattering length has been calculated for rare-gas liquids in the ultraviolet for the frequencies at which they luminesce. The calculations are based on the measured dielectric constants in the gas phase, except in the case of xenon for which measurements are available in the liquid. The scattering length mayplace constraints on the design of some large-scale detectors, using uv luminescence, being proposed to observe solar neutrinos and dark matter. Rayleigh scattering in mixtures of rare-gas mixtures is also discussed.

G. M. Seidel; R. E. Lanou; W. Yao

2001-11-15T23:59:59.000Z

79

Energy Department Small Business Partner Success Stories | Department...  

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

Parks Initiative Clean Cities National Parks Initiative Energy Refits in Philadelphia Energy Refits in Philadelphia Estimated Rare Earth Reserves and Deposits Estimated Rare...

80

Replacing the Rare Earth Intellectual Capital  

SciTech Connect

The rare earth crisis slowly evolved during a 10 to 15 year period beginning in the mid-1980s, when the Chinese began to export mixed rare earth concentrates. In the early 1990s, they started to move up the supply chain and began to export the individual rare earth oxides and metals. By the late 1990s the Chinese exported higher value products, such as magnets, phosphors, polishing compounds, catalysts; and in the 21st century they supplied finished products including electric motors, computers, batteries, liquid-crystal displays (LCDs), TVs and monitors, mobile phones, iPods and compact fluorescent lamp (CFL) light bulbs. As they moved to higher value products, the Chinese slowly drove the various industrial producers and commercial enterprises in the US, Europe and Japan out of business by manipulating the rare earth commodity prices. Because of this, the technically trained rare earth engineers and scientists who worked in areas from mining to separations, to processing to production, to manufacturing of semifinished and final products, were laid-off and moved to other fields or they retired. However, in the past year the Chinese have changed their philosophy of the 1970s and 1980s of forming a rare earth cartel to control the rare earth markets to one in which they will no longer supply the rest of the world (ROW) with their precious rare earths, but instead will use them internally to meet the growing demand as the Chinese standard of living increases. To this end, they have implemented and occasionally increased export restrictions and added an export tariff on many of the high demand rare earth elements. Now the ROW is quickly trying to start up rare earth mines, e.g. Molycorp Minerals in the US and Lynas Corp. in Australia, to cover this shortfall in the worldwide market, but it will take about five years for the supply to meet the demand, even as other mines in the ROW become productive. Unfortunately, today there is a serious lack of technically trained personnel to bring the entire rare earth industry, from mining to original equipment manufacturers (OEM), up to full speed in the next few years. Accompanying this decline in technical expertise, innovation and new products utilizing rare earth elements has slowed dramatically, and it may take a decade or more to recapture America's leading role in technological advancements of rare earth containing products. Before the disruption of the US rare earth industry, about 25,000 people were employed in all aspects of the industry from mining to OEM. Today, only about 1,500 people are employed in these fields. The ratio of non-technically trained persons to those with college degrees in the sciences or engineering varies from about 8 to 1 to about 4 to 1, depending on the particular area of the industry. Assuming an average of 6 to 1, the number of college degree scientists and engineers has decreased from about 4,000 to 250 employed today. In the magnetic industry the approximate numbers are: 6,000 total with 750 technically trained people in the 1980s to 500 totally employed today of which 75 have degrees. The paucity of scientists and engineers with experience and/or training in the various aspects of production and commercialization of the rare earths is a serious limitation to the ability of the US to satisfy its own needs for materials and technologies (1) to maintain our military strength and posture, (2) to assume leadership in critical energy technologies, and (3) to bring new consumer products to the marketplace. The lack of experts is of even greater national importance than the halting in the 1990s and the recent restart of the mining/benification/separation effort in the US; and thus governmental intervention and support for at least five to 10 years will be required to ameliorate this situation. To respond quickly, training programs should be established in conjunction with a national research center at an educational institution with a long tradition in multiple areas of rare earth and other critical elements research and technology. This center should

Gschneidner, Jr., Karl

2011-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Energy Deposition Using EGS4  

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

are used to model the energy deposition in 0.4 r.l. Ti due to photons produced by the Tesla TRD undulator driven by the 250 GeV Tesla primary electron beam. 1 Energy Deposition...

82

Oil shale deposits of Thailand  

SciTech Connect

Oil-shale deposits occur in several areas of Thailand. Perhaps the most important deposit occurs at Mae Sod in Tak Province, West Thailand. Other well-known deposits are Li in Lamphum Province, Ko Kha District, Lampang Province, and Krabi in the southern peninsular region. The geological age of all these deposits is late Tertiary, as demonstrated by the presence of the fossils from the oil shale of the Mae Sod series, e.g., fish of the Ostariophysian family Cyprinidae.

Chakrabarti, A.K.

1976-06-01T23:59:59.000Z

83

Thin Film Deposition and Processing  

Science Conference Proceedings (OSTI)

... Applications: Tube 1 (T1), open for future upgrade. Silicon Nitride Deposition (Tube 2): Low Stress recipe. Stoichiometric recipe. ...

2013-09-17T23:59:59.000Z

84

Multi-chamber deposition system  

DOE Patents (OSTI)

A system for the simultaneous deposition of different coatings onto a thin web within a large volume vacuum chamber is disclosed which chamber is provided with a plurality of deposition chambers in which the different layers are deposited onto the film as its moves from a supply roll to a finished take-up roll of coated web. The deposition chambers provided within the large vacuum chamber are provided with separate seals which minimize back diffusion of any dopant gas from adjacent deposition chambers.

Jacobson, Richard L. (Roseville, MN); Jeffrey, Frank R. (Shoreview, MN); Westerberg, Roger K. (Cottage Grove, MN)

1989-10-17T23:59:59.000Z

85

Multi-chamber deposition system  

DOE Patents (OSTI)

A system for the simultaneous deposition of different coatings onto a thin web within a large volume vacuum chamber is disclosed which chamber is provided with a plurality of deposition chambers in which the different layers are deposited onto the film as its moves from a supply roll to a finished take-up roll of coated web. The deposition chambers provided within the large vacuum chamber are provided with separate seals which minimize back diffusion of any dopant gas from adjacent deposition chambers.

Jacobson, Richard L. (Roseville, MN); Jeffrey, Frank R. (Shoreview, MN); Westerberg, Roger K. (Cottage Grove, MN)

1989-06-27T23:59:59.000Z

86

Chemical vapor deposition sciences  

SciTech Connect

Chemical vapor deposition (CVD) is a widely used method for depositing thin films of a variety of materials. Applications of CVD range from the fabrication of microelectronic devices to the deposition of protective coatings. New CVD processes are increasingly complex, with stringent requirements that make it more difficult to commercialize them in a timely fashion. However, a clear understanding of the fundamental science underlying a CVD process, as expressed through computer models, can substantially shorten the time required for reactor and process development. Research scientists at Sandia use a wide range of experimental and theoretical techniques for investigating the science of CVD. Experimental tools include optical probes for gas-phase and surface processes, a range of surface analytic techniques, molecular beam methods for gas/surface kinetics, flow visualization techniques and state-of-the-art crystal growth reactors. The theoretical strategy uses a structured approach to describe the coupled gas-phase and gas-surface chemistry, fluid dynamics, heat and mass transfer of a CVD process. The software used to describe chemical reaction mechanisms is easily adapted to codes that model a variety of reactor geometries. Carefully chosen experiments provide critical information on the chemical species, gas temperatures and flows that are necessary for model development and validation. This brochure provides basic information on Sandia`s capabilities in the physical and chemical sciences of CVD and related materials processing technologies. It contains a brief description of the major scientific and technical capabilities of the CVD staff and facilities, and a brief discussion of the approach that the staff uses to advance the scientific understanding of CVD processes.

1992-12-31T23:59:59.000Z

87

The rare isotope accelerator (RIA) facility project  

DOE Green Energy (OSTI)

The envisioned Rare-Isotope Accelerator (RIA) facility would add substantially to research opportunities for nuclear physics and astrophysics by combining increased intensities with a greatly expanded variety of high-quality rare-isotope beams. A flexible superconducting driver linac would provide 100 kW, 400 MeV/nucleon beams of any stable isotope from hydrogen to uranium onto production targets. Combinations of projectile fragmentation, target fragmentation, fission, and spallation would produce the needed broad assortment of short-lived secondary beams. This paper describes the project's background, purpose, and status, the envisioned facility, and the key subsystem, the driver linac. RIA's scientific purposes are to advance current theoretical models, reveal new manifestations of nuclear behavior, and probe the limits of nuclear existence [3]. Figures 1 and 2 show, respectively, examples of RIA research opportunities and the yields projected for pursuing them. Figure 3 outlines a conceptual approach for delivering the needed beams.

Christoph Leemann

2000-08-01T23:59:59.000Z

88

DOE Science Showcase - Rare Earth Metal Research from DOE Databases |  

Office of Scientific and Technical Information (OSTI)

Rare Earth Metal Research from DOE Databases Rare Earth Metal Research from DOE Databases Information Bridge Energy Citations Database Highlighted documents of Rare Earth Metal research in DOE databases Information Bridge - Corrosion-resistant metal surfaces DOE R&D Project Summaries - Structural and magnetic studies on heavy rare earth metals at high pressures using designer diamonds Energy Citations Database - Intermultiplet transitions in rare-earth metals DOE Green Energy - LaNi.sub.5 is-based metal hydride electrode in Ni-MH rechargeable cells Science.gov - H.R.4866 - Rare Earths Supply-Chain Technology and Resources Transformation Act of 2010 WorldWideScience.org - China produces most of the world's rare earth metals DOepatents - Recycling of rare earth metals from rare earth-transition metal alloy scrap by liquid metal extraction

89

Rare B Meson Decays at the Tevatron  

SciTech Connect

Rare B meson decays are an excellent probe for beyond the Standard Model physics. Two very sensitive processes are the b {yields} s{mu}{sup +}{mu}{sup -} and B{sub s,d}{sup 0} {yields} {mu}{sup +}{mu}{sup -} decays. We report recent results at a center of mass energy of {radical}s = 1.96 TeV from CDF II using 7 fb{sup -1} at the Fermilab Tevatron Collider.

Hopkins, Walter

2012-01-01T23:59:59.000Z

90

Rare Earth Oxide Fluoride: Ceramic Nano-particles via a ...  

Rare Earth Oxide Fluoride: Ceramic Nano-particles via a Hydrothermal Method. Battelle Number(s): 12234. ... Potential Industry Applications. ...

91

Alternative Process for Rare Earths Recovery from Bastnasite ...  

Science Conference Proceedings (OSTI)

Presentation Title, Alternative Process for Rare Earths Recovery from ... Emerging Issues Around Critical Metals for Clean Energy Automotive Applications.

92

Final Report "Structure of Rare Isotopes"  

SciTech Connect

The Junior Investigator grant 'Structure of Rare Isotopes' (DE-FG02-07ER41529) supported research in low-energy nuclear theory from September 1, 2007 to August 31, 2010. It was the main goal of the proposed research to develop and optimize an occupation-number-based energy functional for the computation of nuclear masses, and this aim has been reached. Furthermore, progress was made in linking two and three-body forces from low-momentum interactions to pairing properties in nuclear density functionals, and in the description of deformed nuclei within an effective theory.

Papenbrock, Thomas

2012-05-09T23:59:59.000Z

93

Scintillation of rare earth doped fluoride nanoparticles  

SciTech Connect

The scintillation response of rare earth (RE) doped core/undoped (multi-)shell fluoride nanoparticles was investigated under x-ray and alpha particle irradiation. A significant enhancement of the scintillation response was observed with increasing shells due: (i) to the passivation of surface quenching defects together with the activation of the REs on the surface of the core nanoparticle after the growth of a shell, and (ii) to the increase of the volume of the nanoparticles. These results are expected to reflect a general aspect of the scintillation process in nanoparticles, and to impact radiation sensing technologies that make use of nanoparticles.

Jacobsohn, L. G.; McPherson, C. L.; Sprinkle, K. B.; Ballato, J. [Center for Optical Materials Science and Engineering Technologies (COMSET), and School of Materials Science and Engineering, Clemson University, Clemson, South Carolina 29634 (United States); Yukihara, E. G. [Physics Department, Oklahoma State University, Stillwater, Oklahoma 74078-3072 (United States); DeVol, T. A. [Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, South Carolina 29634-0905 (United States)

2011-09-12T23:59:59.000Z

94

Search for massive rare particles with MACRO  

E-Print Network (OSTI)

Massive rare particles have been searched for in the penetrating cosmic radiation using the MACRO apparatus at the Gran Sasso National Laboratories. Liquid scintillators, streamer tubes and nuclear track detectors have been used to search for magnetic monopoles (MMs). Based on no observation of such signals, stringent flux limits are established for MMs as slow as a few 10^(-5)c. The methods based on the scintillator and on the nuclear track subdetectors were also applied to search for nuclearites. Preliminary results of the searches for charged Q-balls are also presented.

The MACRO Collaboration

2000-09-01T23:59:59.000Z

95

A Review on Iron Separation in Rare Earths Hydrometallurgy Using ...  

Science Conference Proceedings (OSTI)

... solvent extraction, and some alternative methods (e.g., thermal cracking). ... Assessment and Management of Radioactivity in Rare Earth Element Production ... Hydrometallurgical Plant Design Parameters for the Avalon Rare Earth Process ... Mitigation of Rare Earth Supply Risk Posed by Permanent Magnets Used in ...

96

Rare-Earth-Free Traction Motor: Rare Earth-Free Traction Motor for Electric Vehicle Applications  

Science Conference Proceedings (OSTI)

REACT Project: Baldor will develop a new type of traction motor with the potential to efficiently power future generations of EVs. Unlike today’s large, bulky EV motors which use expensive, imported rare-earth-based magnets, Baldor’s motor could be light, compact, contain no rare earth materials, and have the potential to deliver more torque at a substantially lower cost. Key innovations in this project include the use of a unique motor design, incorporation of an improved cooling system, and the development of advanced materials manufacturing techniques. These innovations could significantly reduce the cost of an electric motor.

None

2012-01-01T23:59:59.000Z

97

Variable temperature semiconductor film deposition  

DOE Patents (OSTI)

A method of depositing a semiconductor material on a substrate is disclosed. The method sequentially comprises (a) providing the semiconductor material in a depositable state such as a vapor for deposition on the substrate; (b) depositing the semiconductor material on the substrate while heating the substrate to a first temperature sufficient to cause the semiconductor material to form a first film layer having a first grain size; (c) continually depositing the semiconductor material on the substrate while cooling the substrate to a second temperature sufficient to cause the semiconductor material to form a second film layer deposited on the first film layer and having a second grain size smaller than the first grain size; and (d) raising the substrate temperature, while either continuing or not continuing to deposit semiconductor material to form a third film layer, to thereby anneal the film layers into a single layer having favorable efficiency characteristics in photovoltaic applications. A preferred semiconductor material is cadmium telluride deposited on a glass/tin oxide substrate already having thereon a film layer of cadmium sulfide.

Li, X.; Sheldon, P.

1998-01-27T23:59:59.000Z

98

Particle Deposition in Granular Media  

Science Conference Proceedings (OSTI)

Objective is to understand aerosol deposition from gas streams flowing through granular media; this is important to the design of granular filtration systems. The following investigations were carried out: transient behavior of granular filtration of aerosols, and stochastic simulation of aerosol deposition in granular media.

Tien, C.

1992-01-01T23:59:59.000Z

99

Hydrothermal Deposition | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Deposition Hydrothermal Deposition Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Deposition Dictionary.png Hydrothermal Deposition: No definition has been provided for this term. Add a Definition Quartz veins indicate ancient fluid flow, possibly the result of a hydrothermal system (reference: http://www.nvcc.edu/home/cbentley/dc_rocks/) Tufa mounds indicate the location of extinct hot springs. In this photo they show the ancient extent of the surface manifestations at Mono Lake, CA (reference: http://news.medill.northwestern.edu/climatechange/page.aspx?id=170704)(photo by Scott Stine) Hydrothermal water carries minerals as it travels through the crust. These minerals are often deposited as pressure decreases as the fluid approaches

100

1988 Wet deposition temporal and spatial patterns in North America  

DOE Green Energy (OSTI)

The focus of this report is on North American wet deposition temporal patterns from 1979 to 1988 and spatial patterns for 1988. It is the third in a series of reports that investigate the patterns of annual precipitation-weighted average concentration and annual deposition for nine ion species: hydrogen, sulfate, nitrate, ammonium, calcium, chloride, sodium, potassium, and magnesium. Mosaic maps, based on surface estimation using kriging, display concentration and deposition spatial patterns of pH, hydrogen, sulfate, nitrate, ammonium, and calcium ion species for 1988 annual, winter, and summer periods. Temporal pattern analyses use a subset of 35 sites over a 10-year (1979--1988) period and an expanded subset of 137 sites, with greater spatial coverage, over a 7-year (1982--1988) period. The 10-year period represents the longest period with wet deposition monitoring data available that has a sufficient number of sites with data of known quality to allow a descriptive summary of annual temporal patterns. Sen`s median trend estimate and Kendall`s seasonal tau (KST) test are calculated for each ion species concentration and deposition at each site in both subsets.

Simpson, J.C.; Olsen, A.R.; Bittner, E.A.

1992-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

1988 Wet deposition temporal and spatial patterns in North America  

DOE Green Energy (OSTI)

The focus of this report is on North American wet deposition temporal patterns from 1979 to 1988 and spatial patterns for 1988. It is the third in a series of reports that investigate the patterns of annual precipitation-weighted average concentration and annual deposition for nine ion species: hydrogen, sulfate, nitrate, ammonium, calcium, chloride, sodium, potassium, and magnesium. Mosaic maps, based on surface estimation using kriging, display concentration and deposition spatial patterns of pH, hydrogen, sulfate, nitrate, ammonium, and calcium ion species for 1988 annual, winter, and summer periods. Temporal pattern analyses use a subset of 35 sites over a 10-year (1979--1988) period and an expanded subset of 137 sites, with greater spatial coverage, over a 7-year (1982--1988) period. The 10-year period represents the longest period with wet deposition monitoring data available that has a sufficient number of sites with data of known quality to allow a descriptive summary of annual temporal patterns. Sen's median trend estimate and Kendall's seasonal tau (KST) test are calculated for each ion species concentration and deposition at each site in both subsets.

Simpson, J.C.; Olsen, A.R.; Bittner, E.A.

1992-03-01T23:59:59.000Z

102

Adaptive Directional Stratification for controlled estimation of the probability of a rare event  

E-Print Network (OSTI)

applications in medicine, industry, agriculture, research and education. The operation of nuclear reactors also cadre de notre recherche de doctorat. 3 Disponible sur le site web de la Commission : http://ec.europa.eu/energy/nuclear présentation de l'Actor-Network theory systématisée par Bruno Latour (LATOUR 2006a). #12;5 © 2 01 2 �mu lat ion

Garnier, Josselin

103

TULSA UNIVERSITY PARAFFIN DEPOSITION PROJECTS  

SciTech Connect

As oil and gas production moves to deeper and colder water, subsea multiphase production systems become critical for economic feasibility. It will also become increasingly imperative to adequately identify the conditions for paraffin precipitation and predict paraffin deposition rates to optimize the design and operation of these multiphase production systems. Although several oil companies have paraffin deposition predictive capabilities for single-phase oil flow, these predictive capabilities are not suitable for the multiphase flow conditions encountered in most flowlines and wellbores. For deepwater applications in the Gulf of Mexico, it is likely that multiphase production streams consisting of crude oil, produced water and gas will be transported in a single multiphase pipeline to minimize capital cost and complexity at the mudline. Existing single-phase (crude oil) paraffin deposition predictive tools are clearly inadequate to accurately design these pipelines because they do not account for the second and third phases, namely, produced water and gas. The objective of this program is to utilize the current test facilities at The University of Tulsa, as well as member company expertise, to accomplish the following: enhance our understanding of paraffin deposition in single and two-phase (gas-oil) flows; conduct focused experiments to better understand various aspects of deposition physics; and, utilize knowledge gained from experimental modeling studies to enhance the computer programs developed in the previous JIP for predicting paraffin deposition in single and two-phase flow environments. These refined computer models will then be tested against field data from member company pipelines. The following deliverables are scheduled during the first three projects of the program: (1) Single-Phase Studies, with three different black oils, which will yield an enhanced computer code for predicting paraffin deposition in deepwater and surface pipelines. (2) Two-Phase Studies, with a focus on heat transfer and paraffin deposition at various pipe inclinations, which will be used to enhance the paraffin deposition code for gas-liquid flow in pipes. (3) Deposition Physics and Water Impact Studies, which will address the aging process, improve our ability to characterize paraffin deposits and enhance our understanding of the role water plays in paraffin deposition in deepwater pipelines. As in the previous two studies, knowledge gained in this suite of studies will be integrated into a state-of-the-art three-phase paraffin deposition computer program.

Michael Volk; Cem Sarica

2003-10-01T23:59:59.000Z

104

PULSE RADIOLYSIS IN SUPERCRITICAL RARE GAS FLUIDS  

Science Conference Proceedings (OSTI)

Recently, supercritical fluids have become quite popular in chemical and semiconductor industries for applications in chemical synthesis, extraction, separation processes, and surface cleaning. These applications are based on: the high dissolving power due to density build-up around solute molecules, and the ability to tune the conditions of a supercritical fluid, such as density and temperature, that are most suitable for a particular reaction. The rare gases also possess these properties and have the added advantage of being supercritical at room temperature. Information about the density buildup around both charged and neutral species can be obtained from fundamental studies of volume changes in the reactions of charged species in supercritical fluids. Volume changes are much larger in supercritical fluids than in ordinary solvents because of their higher compressibility. Hopefully basic studies, such as discussed here, of the behavior of charged species in supercritical gases will provide information useful for the utilization of these solvents in industrial applications.

HOLROYD,R.

2007-01-01T23:59:59.000Z

105

New results for rare muon decays  

Science Conference Proceedings (OSTI)

Branching-ratio limits obtained with the Crystal Box detector are presented for the rare muon decays ..mu.. ..-->.. eee, ..mu.. ..-->.. e..gamma.., and ..mu.. ..-->.. e..gamma gamma... These decays, which violate the conservation of separate lepton-family numbers, are expected to occur in many extensions to the standard model. We found no candidates for the decay ..mu.. ..-->.. eee, yielding an upper limit for the branching ratio of B/sub ..mu..3e/ .. e..gamma.. candidates yields an upper limit of B/sub ..mu..e..gamma../ .. e..gamma gamma.. candidates gives an upper limit of B/sub ..mu..e..gamma gamma../ < 7.2 x 10/sup -11/. These results strengthen the constraints on models that allow transitions between lepton families.

Mischke, R.E.; Bolton, R.D.; Bowman, J.D.; Cooper, M.D.; Frank, J.S.; Hallin, A.L.; Heusi, P.A.; Hoffman, C.M.; Hogan, G.E.; Mariam, F.G.

1986-01-01T23:59:59.000Z

106

1986 wet deposition temporal and spatial patterns in North America  

DOE Green Energy (OSTI)

The focus of this report is on North American wet deposition temporal patterns from 1979 to 1986 and spatial patterns for 1986. The report provides statistical distribution summaries of annual precipitation-weighted average concentration and annual deposition for nine ion species: hydrogen, sulfate, nitrate, ammonium, calcium, chloride, sodium, potassium, and magnesium. The data in the report are from the Acid Depositing System (ADS) for the statistical reporting of North American deposition data. Isopleth maps, based on surface estimation using kriging, display concentration and deposition spatial patterns of pH, hydrogen, sulfate, nitrate, ammonium, and calcium ion species for 1986 annual, winter, and summer periods. The temporal pattern analyses use a subset of 30 sites over an 8-year (1979-1986) period and an expanded subset of 137 sites with greater spatial coverage over a 5-year (1982-1986) period. The 8-year period represents the longest period with wet deposition monitoring data unavailable that has a sufficient number of sites with data of known quality to allow a descriptive summary of annual temporal patterns. 19 refs., 105 figs., 29 tabs.

Olsen, A.R.

1989-07-01T23:59:59.000Z

107

Particle deposition in ventilation ducts  

SciTech Connect

Exposure to airborne particles is detrimental to human health and indoor exposures dominate total exposures for most people. The accidental or intentional release of aerosolized chemical and biological agents within or near a building can lead to exposures of building occupants to hazardous agents and costly building remediation. Particle deposition in heating, ventilation and air-conditioning (HVAC) systems may significantly influence exposures to particles indoors, diminish HVAC performance and lead to secondary pollutant release within buildings. This dissertation advances the understanding of particle behavior in HVAC systems and the fates of indoor particles by means of experiments and modeling. Laboratory experiments were conducted to quantify particle deposition rates in horizontal ventilation ducts using real HVAC materials. Particle deposition experiments were conducted in steel and internally insulated ducts at air speeds typically found in ventilation ducts, 2-9 m/s. Behaviors of monodisperse particles with diameters in the size range 1-16 {micro}m were investigated. Deposition rates were measured in straight ducts with a fully developed turbulent flow profile, straight ducts with a developing turbulent flow profile, in duct bends and at S-connector pieces located at duct junctions. In straight ducts with fully developed turbulence, experiments showed deposition rates to be highest at duct floors, intermediate at duct walls, and lowest at duct ceilings. Deposition rates to a given surface increased with an increase in particle size or air speed. Deposition was much higher in internally insulated ducts than in uninsulated steel ducts. In most cases, deposition in straight ducts with developing turbulence, in duct bends and at S-connectors at duct junctions was higher than in straight ducts with fully developed turbulence. Measured deposition rates were generally higher than predicted by published models. A model incorporating empirical equations based on the experimental measurements was applied to evaluate particle losses in supply and return duct runs. Model results suggest that duct losses are negligible for particle sizes less than 1 {micro}m and complete for particle sizes greater than 50 {micro}m. Deposition to insulated ducts, horizontal duct floors and bends are predicted to control losses in duct systems. When combined with models for HVAC filtration and deposition to indoor surfaces to predict the ultimate fates of particles within buildings, these results suggest that ventilation ducts play only a small role in determining indoor particle concentrations, especially when HVAC filtration is present. However, the measured and modeled particle deposition rates are expected to be important for ventilation system contamination.

Sippola, Mark R.

2002-09-01T23:59:59.000Z

108

Estimated Global Hydrographic Variability  

Science Conference Proceedings (OSTI)

An estimate is made of the three-dimensional global oceanic temperature and salinity variability, omitting the seasonal cycle, both as a major descriptive element of the ocean circulation and for use in the error estimates of state estimation. ...

Gaël Forget; Carl Wunsch

2007-08-01T23:59:59.000Z

109

Modeling particle deposition on HVAC heat exchangers  

E-Print Network (OSTI)

DEPOSITION ON HVAC HEAT EXCHANGERS JA Siegel 1,3 * and WWof fin-and-tube heat exchangers by particle deposition leadsparticle deposition on heat exchanger surfaces. We present a

Siegel, J.A.; Nazaroff, W.W.

2002-01-01T23:59:59.000Z

110

Internal Dose Estimates from  

E-Print Network (OSTI)

Appendix F Internal Dose Estimates from NTS Fallout F-1 #12;Radiation Dose to the Population...........................................................................................40 Comparison to dose estimates from global fallout

111

Age And Nature Of Deposits On The Submarine Flanks Of Piton De La Fournaise  

Open Energy Info (EERE)

Age And Nature Of Deposits On The Submarine Flanks Of Piton De La Fournaise Age And Nature Of Deposits On The Submarine Flanks Of Piton De La Fournaise (Reunion Island) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Age And Nature Of Deposits On The Submarine Flanks Of Piton De La Fournaise (Reunion Island) Details Activities (0) Areas (0) Regions (0) Abstract: Debris-avalanche deposits are by far the most extensive and voluminous formations in the submarine domain around Reunion Island. 21 sites sampled offshore of Piton de la Fournaise were studied. All the dredged rocks have a volcanic origin and often consist of blocks buried in a finer-grained matrix. Both massive and vesiculated samples were found, but only rare fragments of pillow lavas were encountered. All the lavas are basalts with variable amounts of olivine. A few plagioclase-bearing basalts

112

Seasonalepisodic control of acid deposition  

E-Print Network (OSTI)

This report contains the climatological, technical and economic factors for episodic and seasonal control of emissions in existing power plants. Analyzing a large data set of acid deposition for the years 1982-85, we find ...

Fay, James A.

1988-01-01T23:59:59.000Z

113

Linked Deposit Loan Program (Kentucky)  

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

The Linked Deposit Program provides loan financing for small businesses of up to $100,000 for up to 7 years. The State Investment Commission invests funds from the state's Abandoned Property Cash...

114

Good Earths and Rare Earths | Department of Energy  

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

Good Earths and Rare Earths Good Earths and Rare Earths Good Earths and Rare Earths April 20, 2011 - 6:17pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What does this mean for me? Rare earth elements -- dysprosium, neodymium, terbium, europium and yttrium -- are essential to a wide range of green energy technologies ranging from windmills to electric vehicles One of their primary uses is in permanent magnets, which amount to over a $4 billion global industry Ames Laboratory recently discovered a way to make these magnets cheaper and greener and signed a cooperative research and development agreement with Molycorp Inc. -- the Western hemisphere's only producer of rare-earth oxides. China holds about 36 percent of world's rare-earth reserves, (compared to 13 percent in the U.S.), but it currently produces 95 percent

115

BWR Fuel Deposit Sample Evaluation  

Science Conference Proceedings (OSTI)

River Bend Nuclear Power Station, a boiling water reactor (BWR) plant, experienced fuel defects during Cycle 11. The failed fuel pins were identified during the subsequent refueling outage. To assist analysis of the fuel failure root cause, crud flake deposit samples were collected for analyses. Results on the morphology and distribution of chemical elements in four tenacious crud flakes that are associated with the fuel failures are reported in EPRI report 1009733, BWR Fuel Deposit Sample Evaluation–Riv...

2005-11-29T23:59:59.000Z

116

Vapor deposition of hardened niobium  

DOE Patents (OSTI)

A method of coating ceramic nuclear fuel particles containing a major amount of an actinide ceramic in which the particles are placed in a fluidized bed maintained at ca. 800.degree. to ca. 900.degree. C., and niobium pentachloride vapor and carbon tetrachloride vapor are led into the bed, whereby niobium metal is deposited on the particles and carbon is deposited interstitially within the niobium. Coating apparatus used in the method is also disclosed.

Blocher, Jr., John M. (Columbus, OH); Veigel, Neil D. (Columbus, OH); Landrigan, Richard B. (Columbus, OH)

1983-04-19T23:59:59.000Z

117

Chemical enhancement of surface deposition  

DOE Patents (OSTI)

A method and apparatus are disclosed for increasing the deposition of ions onto a surface, such as the adsorption of uranium ions on the detecting surface of a radionuclide detector. The method includes the step of exposing the surface to a complexing agent, such as a phosphate ion solution, which has an affinity for the dissolved species to be deposited on the surface. This provides, for example, enhanced sensitivity of the radionuclide detector. 16 figs.

Patch, K.D.; Morgan, D.T.

1997-07-29T23:59:59.000Z

118

Chemical enhancement of surface deposition  

DOE Patents (OSTI)

A method and apparatus for increasing the deposition of ions onto a surface, such as the adsorption of uranium ions on the detecting surface of a radionuclide detector. The method includes the step of exposing the surface to a complexing agent, such as a phosphate ion solution, which has an affinity for the dissolved species to be deposited on the surface. This provides, for example, enhanced sensitivity of the radionuclide detector.

Patch, Keith D. (Lexington, MA); Morgan, Dean T. (Sudbury, MA)

1997-07-29T23:59:59.000Z

119

SALICYLATE PROCESS FOR THORIUM SEPARATION FROM RARE EARTHS  

DOE Patents (OSTI)

The separation of thorium from rare earths is accomplished by forming an aqueous solution of salts of thorium and rare earths and sufficient acetate buffer to provide a pH of between 2 and 5, adding an ammonium salicylate to the aqueous buffered solution, contacting the resultant solution with a substantially water-immiscible organic solvent mixture of an ether and an ester, and separating the solvent extract phase containing thorium salicylate from the aqueous phase containing the rare earths.

Cowan, G.A.

1959-08-25T23:59:59.000Z

120

Aging of reflective roofs: soot deposition  

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

Aging of reflective roofs: soot deposition Title Aging of reflective roofs: soot deposition Publication Type Journal Article Year of Publication 2002 Authors Berdahl, Paul, Hashem...

Note: This page contains sample records for the topic "deposits estimated rare" 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

Quick, Efficient Film Deposition for Nanomaterials - Energy ...  

Electricity Transmission; Energy Analysis; ... • Films can be deposited uniformly in a one-step deposition of nanoparticles with optimized drop distri ...

122

Rocky Mountain carbonate spring deposit development.  

E-Print Network (OSTI)

??Relict Holocene carbonate spring deposits containing diverse biotic and abiotic depositional textures are present at Fall Creek cold sulphur springs, Alberta, Fairmont Hot Springs, British… (more)

Rainey, Dustin

2009-01-01T23:59:59.000Z

123

A Radon Progeny Deposition Model  

Science Conference Proceedings (OSTI)

The next generation low-background detectors operating underground aim for unprecedented low levels of radioactive backgrounds. Although the radioactive decays of airborne radon (particularly {sup 222}Rn) and its subsequent progeny present in an experiment are potential backgrounds, also problematic is the deposition of radon progeny on detector materials. Exposure to radon at any stage of assembly of an experiment can result in surface contamination by progeny supported by the long half life (22 y) of {sup 210}Pb on sensitive locations of a detector. An understanding of the potential surface contamination from deposition will enable requirements of radon-reduced air and clean room environments for the assembly of low background experiments. It is known that there are a number of environmental factors that govern the deposition of progeny onto surfaces. However, existing models have not explored the impact of some environmental factors important for low background experiments. A test stand has been constructed to deposit radon progeny on various surfaces under a controlled environment in order to develop a deposition model. Results from this test stand and the resulting deposition model are presented.

Guiseppe, V. E. [University of South Dakota, Vermillion, South Dakota 57069 (United States); Elliott, S. R.; Hime, A.; Rielage, K. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Westerdale, S. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2011-04-27T23:59:59.000Z

124

A radon progeny deposition model  

SciTech Connect

The next generation low-background detectors operating underground aim for unprecedented low levels of radioactive backgrounds. Although the radioactive decays of airborne radon (particularly {sup 222}Rn) and its subsequent progeny present in an experiment are potential backgrounds, also problematic is the deposition of radon progeny on detector materials. Exposure to radon at any stage of assembly of an experiment can result in surface contamination by progeny supported by the long half life (22 y) of {sup 210}Pb on sensitive locations of a detector. An understanding of the potential surface contamination from deposition will enable requirements of radon-reduced air and clean room environments for the assembly of low background experiments. It is known that there are a number of environmental factors that govern the deposition of progeny onto surfaces. However, existing models have not explored the impact of some environmental factors important for low background experiments. A test stand has been constructed to deposit radon progeny on various surfaces under a controlled environment in order to develop a deposition model. Results from this test stand and the resulting deposition model are presented.

Rielage, Keith [Los Alamos National Laboratory; Elliott, Steven R [Los Alamos National Laboratory; Hime, Andrew [Los Alamos National Laboratory; Guiseppe, Vincent E [Los Alamos National Laboratory; Westerdale, S. [MIT

2010-12-01T23:59:59.000Z

125

Optical Spectroscopy of Borate Glasses Doped with Trivalent Rare ...  

Science Conference Proceedings (OSTI)

Luminescence properties of rare-earth ions are well-known, but quantum efficiencies ... Ion Exchanged Mixed Glass Cullet Proppants for Stimulation of Oil and ...

126

Mitigation of Rare Earth Supply Risk Posed by Permanent Magnets ...  

Science Conference Proceedings (OSTI)

These include electric vehicles and wind generators. Volatility of the price of rare earth elements highlights the importance of a co-ordinated strategy to mitigate ...

127

Application of Reactive Oily Bubble Flotation Technology to Rare ...  

Science Conference Proceedings (OSTI)

... bubbles covered by a thin layer of oil containing oil-soluble collectors) as a ... Impurities from Multi-Source Concentrates Feeding a Rare Earths Refinery.

128

Rare Earth Modified Matrices for SiC Matrix Composites  

Science Conference Proceedings (OSTI)

Presentation Title, Rare Earth Modified Matrices for SiC Matrix Composites. Author(s), David L Poerschke, Carlos G Levi. On-Site Speaker (Planned), David L

129

Production, Refining and Recycling of Rare Earth Metals  

Science Conference Proceedings (OSTI)

This symposium is targeting on overview of the current state of the art for production, refining and recycling of the rare earth metals. In addition the symposium is ...

130

Production, Recovery and Recycling of Rare Earth Metals  

Science Conference Proceedings (OSTI)

This symposium is targeting on overview of the current state of the art for production, recovery and recycling of the rare earth. In addition the symposium is  ...

131

Behavior of Rare Earth Elements in Geothermal Systems- A New...  

Open Energy Info (EERE)

2001 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration...

132

Rare Earth Elements Industry Overview and Advanced Materials  

Science Conference Proceedings (OSTI)

Oct 30, 2013 ... We'll review many of these applications including forecasts for growth. ... Volatility of the price of rare earth elements highlights the importance ...

133

Researchers use light to create rare uranium molecule  

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

to create rare uranium molecule Uranium nitride materials show promise as advanced nuclear fuels due to their high density, high stability, and high thermal conductivity. July...

134

Replacing Critical Rare Earth Materials in High Energy Density ...  

Science Conference Proceedings (OSTI)

... magnet motors (IPM) for hybride and electric vehicles and direct drive wind generators. Current motor designs use rare earth permanent magnets which easily ...

135

Rare Earth and Plutonium Doping of Apatite - Programmaster.org  

Science Conference Proceedings (OSTI)

Presentation Title, Rare Earth and Plutonium Doping of Apatite ... Influence of Cation Composition and Temperature on the Solubility and Oxidation State of Ce  ...

136

Electronic interactions give rise to quantum phenomena in rare...  

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

exist in a wide variety of correlated electron systems, including cuprate high-temperature superconductors, transition-metal itinerant magnets, rare-earth compounds, and organic...

137

Rare Earth Elements Industry Overview and Advanced Materials  

Science Conference Proceedings (OSTI)

In response to booming growth in the industrial output and rare metal demand in Korea, The Korean Government, through such organizations as KIRAM and ...

138

Rare Earth Oxide Coatings for Life Extension of Chromia Forming ...  

Science Conference Proceedings (OSTI)

Feb 1, 2001 ... TMS: The Minerals, Metals and Materials Society Home ... Rare Earth Oxide Coatings for Life Extension of Chromia Forming Alloys by Stela ...

139

Precise rare earth analysis of geological materials  

Science Conference Proceedings (OSTI)

Rare earth element (REE) concentrations are very informative in revealing chemical fractionation processs in geological systems. The REE's (La-Lu) behavior is characteristic of various primary and secondary minerals which comprise a rock. The REE's contents and their patterns provide a strong fingerprint in distinguishing among various rock types and in understanding the partial melting and/or fractional crystallization of the source region. The REE contents in geological materials are usually at trace levels. To measure all the REE at such levels, radiochemical neutron activation analysis (RNAA) has been used with a REE group separation scheme. To maximize detection sensitivites for individual REE, selective ..gamma..-ray/x-ray measurements have been made using normal Ge(Li) and low-energy photon detectors (LEPD), and Ge(Li)-NaI(Tl) coincidence-noncoincidence spectrometer systems. Using these detection methods an individual REE can be measured at or below the ppB levels; chemical yields of the REE are determined by reactivation.

Laul, J.C.; Wogman, N.A.

1982-01-01T23:59:59.000Z

140

Exploring the Chemical Space for Rare-earth Additions to Optimize ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

Note: This page contains sample records for the topic "deposits estimated rare" 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

Software Cost Estimation  

E-Print Network (OSTI)

Software cost estimation is the process of predicting the effort required to develop a software system. Many estimation models have been proposed over the last 30 years. This paper provides a general overview of software cost estimation methods including the recent advances in the field. As a number of these models rely on a software size estimate as input, we first provide an overview of common size metrics. We then highlight the cost estimation models that have been proposed and used successfully. Models may be classified into 2 major categories: algorithmic and non-algorithmic. Each has its own strengths and weaknesses. A key factor in selecting a cost estimation model is the accuracy of its estimates. Unfortunately, despite the large body of experience with estimation models, the accuracy of these models is not satisfactory. The paper includes comment on the performance of the estimation models and description of several newer approaches to cost estimation.

Hareton Leung Zhang; Zhang Fan

2002-01-01T23:59:59.000Z

142

Metal film deposition by laser breakdown chemical vapor deposition  

Science Conference Proceedings (OSTI)

Dielectric breakdown of gas mixtures can be used to deposit homogeneous thin films by chemical vapor deposition with appropriate control of flow and pressure conditions to suppress gas phase nucleation and particle formation. Using a pulsed CO/sub 2/ laser operating at 10.6 microns where there is no significant resonant absorption in any of the source gases, we have succeeded in depositing homogeneous films from several gas phase precursors by gas phase laser pyrolysis. Nickel and molybdenum from the respective carbonyls and tungsten from the hexafluoride have been examined to date. In each case the gas precursor is buffered to reduce the partial pressure of the reactants and to induce breakdown. The films are spectrally reflective and uniform over a large area. Films have been characterized by Auger electron spectroscopy, x-ray diffraction, pull tests, and resistivity measurements. The highest quality films have resulted from the nickel depositions. Detailed x-ray diffraction analysis of these films yields a very small domain size (approx. 50 A) consistent with rapid quenching from the gas phase reaction zone. This analysis also shows nickel carbide formation consistent with the temperature of the reaction zone and the Auger electron spectroscopy results which show some carbon and oxygen incorporation (8% and 1% respectively). Gas phase transport and condensation of the molybdenum carbonyl results in substantial carbon and oxygen contamination of the molybdenum films requiring heated substrates, a requirement not consistent with the goals of the program to maximize the quench rate of the deposition. Results from tungsten deposition experiments representing a reduction chemistry instead of the decomposition chemistry involved in the carbonyl experiments are also reported.

Jervis, T.R.

1985-01-01T23:59:59.000Z

143

CADMIUM-RARE EARTH BORATE GLASS AS REACTOR CONTROL MATERIAL  

DOE Patents (OSTI)

A reactor control rod fabricated from a cadmiumrare earth-borate glass is presented. The rare earth component of this glass is selected from among those rare earths having large neutron capture cross sections, such as samarium, gadolinium or europium. Partlcles of this glass are then dispersed in a metal matrix by standard powder metallurgy techniques.

Ploetz, G.L.; Ray, W.E.

1958-11-01T23:59:59.000Z

144

DOE Announces RFI on Rare Earth Metals | Department of Energy  

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

RFI on Rare Earth Metals RFI on Rare Earth Metals DOE Announces RFI on Rare Earth Metals May 6, 2010 - 12:00am Addthis Washington, D.C. - The Department of Energy has released a Request for Information (RFI) soliciting information on rare earth metals and other materials used in the energy sector. The request is specifically focused on rare earth metals (e.g., lanthanum, cerium and neodymium) and several other metals including lithium and cobalt, but respondents are welcome to identify other materials of interest. These materials are important to the development and deployment of a variety of clean energy technologies, such as wind turbines, hybrid vehicles, solar panels and energy efficient light bulbs. In a March 17 speech, Assistant Secretary of Energy for Policy & International Affairs David Sandalow announced that DOE is developing its

145

Behavior of Rare Earth Elements in Geothermal Systems- A New  

Open Energy Info (EERE)

Behavior of Rare Earth Elements in Geothermal Systems- A New Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool? Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool? Abstract N/A Author Department of Geology and Geological Engineering niversity of Idaho Published Publisher Not Provided, 2001 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool? Citation Department of Geology and Geological Engineering niversity of Idaho. 2001. Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool?. (!) : (!) . Retrieved from

146

DOE Announces RFI on Rare Earth Metals | Department of Energy  

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

RFI on Rare Earth Metals RFI on Rare Earth Metals DOE Announces RFI on Rare Earth Metals May 6, 2010 - 12:00am Addthis Washington, D.C. - The Department of Energy has released a Request for Information (RFI) soliciting information on rare earth metals and other materials used in the energy sector. The request is specifically focused on rare earth metals (e.g., lanthanum, cerium and neodymium) and several other metals including lithium and cobalt, but respondents are welcome to identify other materials of interest. These materials are important to the development and deployment of a variety of clean energy technologies, such as wind turbines, hybrid vehicles, solar panels and energy efficient light bulbs. In a March 17 speech, Assistant Secretary of Energy for Policy & International Affairs David Sandalow announced that DOE is developing its

147

Effect of Deposition Temperature and Oxygen Pressure on ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

148

A Geometallurgical Approach of REE Deposits Using Quantitative ...  

Science Conference Proceedings (OSTI)

Characterization of Indonesia Rare Earth Minerals and their Potential Processing Techniques · Characterization of Rare Earth Minerals with Field Emission ...

149

TULSA UNIVERSITY PARAFFIN DEPOSITION PROJECTS  

SciTech Connect

As oil and gas production moves to deeper and colder water, subsea multiphase production systems become critical for economic feasibility. It will also become increasingly imperative to adequately identify the conditions for paraffin precipitation and predict paraffin deposition rates to optimize the design and operation of these multi-phase production systems. Although several oil companies have paraffin deposition predictive capabilities for single-phase oil flow, these predictive capabilities are not suitable for the multiphase flow conditions encountered in most flowlines and wellbores. For deepwater applications in the Gulf of Mexico, it is likely that multiphase production streams consisting of crude oil, produced water and gas will be transported in a single multiphase pipeline to minimize capital cost and complexity at the mudline. Existing single-phase (crude oil) paraffin deposition predictive tools are clearly inadequate to accurately design these pipelines, because they do not account for the second and third phases, namely, produced water and gas. The objective of this program is to utilize the current test facilities at The University of Tulsa, as well as member company expertise, to accomplish the following: enhance our understanding of paraffin deposition in single and two-phase (gas-oil) flows; conduct focused experiments to better understand various aspects of deposition physics; and, utilize knowledge gained from experimental modeling studies to enhance the computer programs developed in the previous JIP for predicting paraffin deposition in single and two-phase flow environments. These refined computer models will then be tested against field data from member company pipelines.

Cem Sarica; Michael Volk

2004-06-01T23:59:59.000Z

150

Statistics of Sxy Estimates  

Science Conference Proceedings (OSTI)

The statistics of Sxy estimates derived from orthogonal-component measurements are examined. Based on results of Goodman, the probability density function (pdf) for Sxy(f) estimates is derived, and a closed-form solution for arbitrary moments of ...

M. H. Freilich; S. S. Pawka

1987-10-01T23:59:59.000Z

151

Cost Estimation Recommendations  

Science Conference Proceedings (OSTI)

...D.P. Hoult and C.L. Meador, Manufacturing Cost Estimating, Materials Selection and Design, Vol 20, ASM Handbook,

152

Decomposition of Rare Earth Loaded Resin Particles  

Science Conference Proceedings (OSTI)

The Fuel Cycle R and D (FCR and D) program within the Department of Energy Office of Nuclear Energy (DOE-NE) is evaluating nuclear fuel cycle options, including once-through, modified open, and fully closed cycles. Each of these scenarios may utilize quite different fuel management schemes and variation in fuel types may include high thermal conductivity UO{sub 2}, thoria-based, TRISO, metal, advanced ceramic (nitride, carbide, composite, etc.), and minor actinide (MA) bearing fuels and targets. Researchers from the US, Europe, and japan are investigating methods of fabricating high-specific activity spherical particles for fuel and target applications. The capital, operating, and maintenance costs of such a fuel fabrication facility can be significant, thus fuel synthesis and fabrication processes that minimize waste and process losses, and require less footprint are desired. Investigations have been performed at the Institute for Transuranium Elements (ITU) and the French Atomic Energy Commission (CEA) studying the impact of americium and curium on the fuel fabrication process. proof of concept was demonstrated for fabrication of MA-bearing spherical particles, however additional development will be needed for engineering scale-up. Researchers at the Paul Scherer Institute (PSI) and the Japan Atomic Energy Association (JAEA) have collaborated on research with ceramic-metallic (CERMET) fuels using spherical particles as the ceramic component dispersed in the metal matrix. Recent work at the CEA evaluates the burning of MA in the blanket region of sodium fast reactors. There is also interest in burning MA in Canada Deuterium Uranium (CANDU) reactors. The fabrication of uranium-MA oxide pellets for a fast reactor blanket or MA-bearing fuel for CANDU reactors may benefit from a low-loss dedicated footprint for producing MA-spherical particles. One method for producing MA-bearing spherical particles is loading the actinide metal on a cation exchange resin. The AG-50W resin is made of sulfonic acid functional groups attached to a styrene divinylbenzene copolymer lattice (long chained hydrocarbon). The metal cation binds to the sulfur group, then during thermal decomposition in air the hydrocarbons will form gaseous species leaving behind a spherical metal-oxide particle. Process development for resin applications with radioactive materials is typically performed using surrogates. For americium and curium, a trivalent metal like neodymium can be used. Thermal decomposition of Nd-loaded resin in air has been studied by Hale. Process conditions were established for resin decomposition and the formation of Nd{sub 2}O{sub 3} particles. The intermediate product compounds were described using x-ray diffraction (XRD) and wet chemistry. Leskela and Niinisto studied the decomposition of rare earth (RE) elements and found results consistent with Hale. Picart et al. demonstrated the viability of using a resin loading process for the fabrication of uranium-actinide mixed oxide microspheres for transmutation of minor actinides in a fast reactor. For effective transmutation of actinides, it will be desirable to extend the in-reactor burnup and minimize the number of recycles of used actinide materials. Longer burn times increases the chance of Fuel Clad Chemical or Mechanical Interaction (FCCI, FCMI). Sulfur is suspected of contributing to Irradiation Assisted Stress Corrosion Cracking (IASCC) thus it is necessary to maximize the removal of sulfur during decomposition of the resin. The present effort extends the previous work by quantifying the removal of sulfur during the decomposition process. Neodymium was selected as a surrogate for trivalent actinide metal cations. As described above Nd was dissolved in nitric acid solution then contacted with the AG-50W resin column. After washing the column, the Nd-resin particles are removed and dried. The Nd-resin, seen in Figure 1 prior to decomposition, is ready to be converted to Nd oxide microspheres.

Voit, Stewart L [ORNL; Rawn, Claudia J [ORNL

2010-09-01T23:59:59.000Z

153

Report Reveals Not-So-Rare Earth Elements - Materials Technology ...  

Science Conference Proceedings (OSTI)

Nov 22, 2010 ... The report describes significant deposits of REE in 14 states, with the ... Bokan Mountain, Alaska; and the Bear Lodge Mountains, Wyoming.

154

Chemical vapor deposition of ZrC in small bore carbon-composite tubes  

SciTech Connect

Process conditions are described for the chemical vapor deposition of ZrC from ZrCl/sub 4/--CH/sub 4/--HCl--H/sub 2/--Ar vapor over the temperature range 1320 to 1775 deg K. From an analysis of the process conditions (initial composition of coating gas, axial temperature profile along the tubes, total pressure, and length of deposition time), the subsequent ZrC coat thickness profiles and thermodynamic data, an equation expressing the variation of the axial rate of ZrC deposition is derived. This expression can be used for the estimation of process conditions required to yield a specified ZrC coat profile. Variations of the chlorine and oxygen contents, lattice pararmeter, microstructure of the ZrC deposit and thermal expansion coefficient as a function of deposition temperature are described. (11 figures, 3 tables) (auth)

Wallace, T.C.

1973-01-01T23:59:59.000Z

155

Meteorite made up of rare early solar system material  

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

1613meteorite 01162013 Meteorite made up of rare early solar system material Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Printer-friendly Pieces of the Sutter's Mill...

156

Fact Sheet: Facility For Rare Isotope Beams (FRIB) Applicant Selection |  

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

Facility For Rare Isotope Beams (FRIB) Applicant Facility For Rare Isotope Beams (FRIB) Applicant Selection Fact Sheet: Facility For Rare Isotope Beams (FRIB) Applicant Selection December 11, 2008 - 8:51am Addthis Based on the analyses and recommendations over the last decade, the U.S. Department of Energy (DOE) Office of Science determined that the establishment of a Facility for Rare Isotope Beams (FRIB) is a high priority for the future of U.S. nuclear science research. This determination and supporting rationale are reflected in the DOE/ National Science Foundation Nuclear Science Advisory Committee's 2007 Long Range Plan and the 2003 DOE report, "Facilities for the Future of Science: A Twenty-Year Outlook." A Funding Opportunity Announcement (FOA) was used to solicit applications for the conceptual design and establishment of FRIB in order

157

Press Pass - Press Release - July 19, 2013: Discovery of rare...  

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

News Quantum Diaries Press Room 13-17 July 19, 2013 FOR IMMEDIATE RELEASE Discovery of rare decay narrows space for new physics After a quarter of a century of searching,...

158

Formation of rare earth carbonates using supercritical carbon dioxide  

DOE Patents (OSTI)

The invention relates to a process for the rapid, high yield conversion of select rare earth oxides or hydroxides, to their corresponding carbonates by contact with supercritical carbon dioxide.

Fernando, Quintus (Tucson, AZ); Yanagihara, Naohisa (Zacopan, MX); Dyke, James T. (Santa Fe, NM); Vemulapalli, Krishna (Tuscon, AZ)

1991-09-03T23:59:59.000Z

159

The Uses of Rare Earth Element Activated Micrometer and ...  

Science Conference Proceedings (OSTI)

... lighting industries, detecting systems, security applications (marking objects and currency) and ... Assessment and Management of Radioactivity in Rare Earth Element Production ... Inorganic Functional Materials for Environmental Protection ... Oxides for Nuclear Waste Sequestration Applications by X-ray Spectroscopy ...

160

Objective Limits on Forecasting Skill of Rare Events  

Science Conference Proceedings (OSTI)

A method for determining baselines of skill for the purpose of the verification of rare-event forecasts is described and examples are presented to illustrate the sensitivity to parameter choices. These “practically perfect” forecasts are designed ...

Nathan M. Hitchens; Harold E. Brooks; Michael P. Kay

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Behavior Of Rare Earth Element In Geothermal Systems, A New  

Open Energy Info (EERE)

Behavior Of Rare Earth Element In Geothermal Systems, A New Behavior Of Rare Earth Element In Geothermal Systems, A New Exploration-Exploitation Tool Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Behavior Of Rare Earth Element In Geothermal Systems, A New Exploration-Exploitation Tool Details Activities (32) Areas (17) Regions (0) Abstract: The goal of this four-year project was to provide a database by which to judge the utility of the rare earth elements (REE) in the exploration for and exploitation of geothermal fields in the United States. Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: (1) the North Island of New Zealand (1 set of samples); (2) the Cascades of Oregon; (3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; (4) the Dixie Valley and Beowawe fields

162

Evolution of Turbine Blade Deposits in an Accelerated Deposition Facility: Roughness and Thermal Analysis.  

E-Print Network (OSTI)

??During the operation of a gas turbine, ingested contaminants present in the air form deposits on the surfaces of the turbine blades. These deposits grow… (more)

Wammack, James Edward 1979-

2005-01-01T23:59:59.000Z

163

Deposition  

National Nuclear Security Administration (NNSA)

as far 4 as nuclear power, the vast majority of those items that 5 are in a nuclear power plant that Commerce controls 6 have very limited licensing requirements. 7 Commerce also...

164

Chemical vapor depositing of metal fluorides  

Science Conference Proceedings (OSTI)

High Purity BeF2 and BeF2–AlF3glasses have been deposited by the chemical vapor deposition technique using beryllium and aluminum 1

A. Sarhangi; J. M. Power

1992-01-01T23:59:59.000Z

165

Chemical vapor deposition of functionalized isobenzofuran polymers  

E-Print Network (OSTI)

This thesis develops a platform for deposition of polymer thin films that can be further tailored by chemical surface modification. First, we explore chemical vapor deposition of functionalized isobenzofuran films using ...

Olsson, Ylva Kristina

2007-01-01T23:59:59.000Z

166

Modeling deposit formation in diesel injector nozzle  

E-Print Network (OSTI)

Formation of deposit in the diesel injector nozzle affects the injection behavior and hinders performance. Under running condition, deposit precursors are washed away by the ensuing injection. However, during the cool down ...

Sudhiesh Kumar, Chintoo

2009-01-01T23:59:59.000Z

167

LOW PRESSURE CHEMICAL VAPOR DEPOSITION OF POLYSILICON  

E-Print Network (OSTI)

THEORY The mass transport processes in low pressure chemical vapor deposition (LPCVD) are similar to those occuring in catalytic reactors

Gieske, R.J.

2011-01-01T23:59:59.000Z

168

Guidelines for Turbine Deposit Collection and Analysis  

Science Conference Proceedings (OSTI)

Steam impurities can deposit throughout the steam path, causing a variety of performance issues. Deposits can result in efficiency losses and component failures through stress corrosion cracking (SCC) or corrosion fatigue (CF) initiated by corrosive deposits. The potential for each of these mechanisms can be exacerbated by the reduced frequency of turbine overhauls or opportunities to conduct an inspection. Sampling and deposit analysis is an integral part of a steam path audit, as well as a reflection o...

2011-12-14T23:59:59.000Z

169

Derived Annual Estimates  

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

For Methodology Concerning the Derived Estimates Total Consumption of Offsite-Produced Energy for Heat and Power by Industry Group, 1988-1998 Total Energy *** Electricity ***...

170

Derived Annual Estimates  

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

For Methodology Concerning the Derived Estimates Total Consumption of Offsite-Produced Energy for Heat and Power by Industry Group, 1974-1988 Total Energy *** Electricity ***...

171

Estimating Corn Grain Yields  

E-Print Network (OSTI)

This publication explains how to estimate the grain yield of a corn crop before harvest. An interactive grain yield calculator is included. 6 pages, 3 tables, 1 figure.

Blumenthal, Jurg M.; Thompson, Wayne

2009-06-12T23:59:59.000Z

172

Texture of atomic layer deposited ruthenium  

Science Conference Proceedings (OSTI)

Ruthenium films were grown by plasma enhanced atomic layer deposition (ALD) on Si(100) and ALD TiN. X-ray diffraction (XRD) showed that the as-deposited films on Si(100) were polycrystalline, on TiN they were (002) oriented. After annealing at 800^oC ... Keywords: Ammonia plasma, Atomic layer deposition, Ruthenium, Silicide, Texture

J. Musschoot; Q. Xie; D. Deduytsche; K. De Keyser; D. Longrie; J. Haemers; S. Van den Berghe; R. L. Van Meirhaeghe; J. D'Haen; C. Detavernier

2010-10-01T23:59:59.000Z

173

Rare earth elements in synthetic zircon. 1. synthesis, and rare earth element and phosphorus doping.  

SciTech Connect

Sedimentary mineral assemblages commonly contain detrital zircon crystals as part of the heavy-mineral fraction. Age spectra determined by U-Pb isotopic analysis of single zircon crystals within a sample may directly image the age composition--but not the chemical composition--of the source region. Rare earth element (REE) abundances have been measured for zircons from a range of common crustal igneous rock types from different tectonic environments, as well as kimberlite, carbonatite, and high-grade metamorphic rocks, to assess the potential of using zircon REE characteristics to infer the rock types present in sediment source regions. Except for zircon with probable mantle affinities, zircon REE abundances and normalized patterns show little intersample and intrasample variation. To evaluate the actual variation in detrital zircon REE composition in a true sediment of known mixed provenance, zircons from a sandstone sample from the Statfjord Formation (North Sea) were analyzed. Despite a provenance including high-grade metasediment and granitoids and a range in zircon age of 2.82 b.y., the zircon REEs exhibit a narrow abundance range with no systematic differences in pattern shape. These evidences show zircon REE patterns and abundances are generally not useful as indicators of provenance.

Hanchar, J. M.; Finch, R. J.; Hoskin, W. O.; Watson, E. B.; Cherniak, D. J.; Mariano, A. N.; Chemical Engineering; George Washington Univ.; Univ. of Canterbury; Australian National Univ.; Rensselaer Polytechnic Inst.

2001-05-01T23:59:59.000Z

174

In situ removal of the ``hockey stick`` fissile material deposit at the East Tennessee Technology Park  

Science Conference Proceedings (OSTI)

Prior to shutdown of the gaseous diffusion process at the Oak Ridge K-25 Plant (now East Tennessee Technology Park), leakage of humid air into the process piping and equipment caused reactions with UF{sub 6}, which produced nonvolatile uranyl fluoride (UO{sub 2}F{sub 2}) deposition and other solid uranium fluoride compounds. During the period 1988--1991, Lockheed Martin Energy Systems performed nondestructive analysis (NDA) radiological surveys of the K-25 Site process facilities that previously had contained or processed uranium. These surveys were made to estimate the mass and {sup 235}U assay of localized uranium deposits remaining within the process piping and equipment. Three deposits were identified that had sufficient mass to achieve criticality. Two of these, the horizontal pipe and the T pipe deposits, required the addition of a moderator before a criticality accident could occur. The third was a very large uranium deposit determined by NDA to be distributed annularly in the process piping. Because of the shape of the system, it came to be called the hockey stick deposit. Because of the foregoing concerns with the hockey stick deposit, it was decided to gain experience by removing the less hazardous smaller deposits with their less complicated geometries first. Thus, the horizontal pipe deposit, the simplest and least reactive case, was handled first, in June 1997. Next, the T pipe, which was an intersection of large-diameter pipes and which posed additional problems because of a more complex geometry, was handled in August 1997. From this experience, the deposit removal techniques and procedures were refined. In December 1997, this large deposit was removed, and the contents were placed in a safe array configuration.

Lewis, K.D.; Tollefson, D.A. [Lockheed Martin Energy Systems (United States)

1998-12-31T23:59:59.000Z

175

Cooling load estimation methods  

DOE Green Energy (OSTI)

Ongoing research on quantifying the cooling loads in residential buildings, particularly buildings with passive solar heating systems, is described. Correlations are described that permit auxiliary cooling estimates from monthly average insolation and weather data. The objective of the research is to develop a simple analysis method, useful early in design, to estimate the annual cooling energy required of a given building.

McFarland, R.D.

1984-01-01T23:59:59.000Z

176

Estimating frequency of change  

Science Conference Proceedings (OSTI)

Many online data sources are updated autonomously and independently. In this article, we make the case for estimating the change frequency of data to improve Web crawlers, Web caches and to help data mining. We first identify various scenarios, where ... Keywords: Change frequency estimation, Poisson process

Junghoo Cho; Hector Garcia-Molina

2003-08-01T23:59:59.000Z

177

MODELING TRITIUM TRANSPORT, DEPOSITION AND RE-EMISSION  

Science Conference Proceedings (OSTI)

The atmospheric release of tritium oxide (HTO) potentially impacts human health, typically through inhalation or absorption. Due to HTO's similarity to water, vegetation will absorb HTO by solution in the leaf water and then re-emit it, creating a number of secondary sources of HTO. Currently, models used for emergency response at Savannah River Site incorporate the transport and deposition of HTO but do not provide estimates for its potential re-emission from vegetation or soil surface though re-emission could result in prolonged exposure and greater than predicted dose for an individual downwind. A simple model of HTO transport, deposition and re-emission has been developed to examine the potential increase in exposure and dose. The model simulates an initial release of HTO that moves with a mean wind and expands through diffusion as a Gaussian puff. Deposition is modeled using previous estimates of deposition velocity for HTO and re-emission is modeled using a time constant that describes how quickly HTO is transferred between the surface and atmosphere. Additional puffs are created to simulate re-emission of HTO as well as horizontal diffusion across model grid cells. An evaluation of field data indicates that the use of a re-emission module tends to improve model predictions through improved prediction of peak concentration magnitude and location. When considering dose, nearly all of the released material is included in the dose calculation when re-emission is included. Although exposure to HTO through re-emission occurs over a few hours, the incremental increase in dose is relatively small because the atmospheric concentration of re-emitted HTO is much lower than the initial release.

Viner, B.

2012-04-03T23:59:59.000Z

178

Investigation of RF plasma spraying synthesis of rare earth oxide nano-materials.  

E-Print Network (OSTI)

??Nano rare earth materials have attracted great interest recently due to their unique properties and extensive applications. Among the methods for nano rare earth materials… (more)

Sun, Xiao Long.

2010-01-01T23:59:59.000Z

179

DOE Workshop - Deposition Velocity Status  

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

Delivering DOE's Vision for the Delivering DOE's Vision for the East Tennessee Technology Park Mission Safely Delivering the Department of Energy's Vision for the East Tennessee Technology Park Mission DOE Workshop Deposition Velocity Status Mike Hitchler, Manager Nuclear Facility Safety June 5, 2012 Safely Delivering DOE's Vision for the East Tennessee Technology Park Mission Existing UCOR Analyses * UCOR facilities at East Tennessee Technology Park (ETTP) and Oak Ridge National Laboratory (ORNL) use various plume models depending on when they were developed and by whom. - Some use MACCS or MACCS2 for dispersion evaluation. (~5 locations) - LLLW uses ingestion modeling (multiple locations)

180

Fact Sheet: Facility for Rare Isotope Beams (FRIB) Applicant Selection |  

Office of Science (SC) Website

Fact Sheet: Fact Sheet: Facility for Rare Isotope Beams (FRIB) Applicant Selection News Featured Articles Science Headlines 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Presentations & Testimony News Archives Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 12.11.08 Fact Sheet: Facility for Rare Isotope Beams (FRIB) Applicant Selection Print Text Size: A A A Subscribe FeedbackShare Page Based on the analyses and recommendations over the last decade, the U.S. Department of Energy (DOE) Office of Science determined that the establishment of a Facility for Rare Isotope Beams (FRIB) is a high priority for the future of U.S. nuclear science research. This determination and supporting rationale are reflected in the DOE/ National

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


181

DOE - Office of Legacy Management -- International Rare Metals Refinery Inc  

Office of Legacy Management (LM)

Rare Metals Refinery Rare Metals Refinery Inc - NY 38 FUSRAP Considered Sites Site: International Rare Metals Refinery, Inc. (NY.38 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: Canadian Radium and Uranium Corporation NY.38-1 Location: 69 Kisko Avenue , Mt. Kisko , New York NY.38-1 NY.38-3 Evaluation Year: 1987 NY.38-4 Site Operations: Manufactured and distributed radium and polonium products. NY.38-5 Site Disposition: Eliminated - No Authority - Site was a commercial operation not under the jurisdiction of DOE predecessor agencies NY.38-2 NY.38-4 Radioactive Materials Handled: Yes Primary Radioactive Materials Handled: Radium, Plutonium NY.38-5 Radiological Survey(s): Yes NY.38-1 NY.38-5 Site Status: Eliminated from consideration under FUSRAP

182

A REVIEW OF THE RARE-EARTH HYDRIDES  

SciTech Connect

Some of the properties of rare earth hydrides are reviewed. Information on the hydrides of Tm, Lu, Tb, and Ho is not included because no work has been done on these elements. Eu and Yb are different from other rare earths in that MH/sub 2/ is their highest hydride and the crystal structures of EuH/sub 2/ and YbH/sub 2/ are orthorhombic. ra, Ce, Pr, and Nd form a dihydride which will take hydrogen into solid solution up to MH/sub 3/ without a change in crystal structure. The heavy rare earths form the same type of dihydride as the light, but as the hydrogen content increases from MH/sub 2/ the cubic structure becomes unstable and is replaced by a hexagonal structare. With increasing atomic number, thermal stability and hydrogen deusity increase. (J.R.D.)

Mulford, R.N.R.

1950-01-01T23:59:59.000Z

183

Yttrium and rare earth stabilized fast reactor metal fuel  

DOE Patents (OSTI)

To increase the operating temperature of a reactor, the melting point and mechanical properties of the fuel must be increased. For an actinide-rich fuel, yttrium, lanthanum and/or rare earth elements can be added, as stabilizers, to uranium and plutonium and/or a mixture of other actinides to raise the melting point of the fuel and improve its mechanical properties. Since only about 1% of the actinide fuel may be yttrium, lanthanum, or a rare earth element, the neutron penalty is low, the reactor core size can be reduced, the fuel can be burned efficiently, reprocessing requirements are reduced, and the nuclear waste disposal volumes reduced. A further advantage occurs when yttrium, lanthanum, and/or other rare earth elements are exposed to radiation in a reactor, they produce only short half life radioisotopes, which reduce nuclear waste disposal problems through much shorter assured-isolation requirements.

Guon, Jerold (Woodland Hills, CA); Grantham, LeRoy F. (Calabasas, CA); Specht, Eugene R. (Simi Valley, CA)

1992-01-01T23:59:59.000Z

184

Rare earth-transition metal scrap treatment method  

DOE Patents (OSTI)

Rare earth-transition metal (e.g. iron) scrap (e.g. Nd-Fe-B scrap) is melted to reduce the levels of tramp oxygen and nitrogen impurities therein. The tramp impurities are reduced in the melt by virtue of the reaction of the tramp impurities and the rare earth to form dross on the melt. The purified melt is separated from the dross for reuse. The oxygen and nitrogen of the melt are reduced to levels acceptable for reuse of the treated alloy in the manufacture of end-use articles, such as permanent magnets. 3 figs.

Schmidt, F.A.; Peterson, D.T.; Wheelock, J.T.; Jones, L.L.; Lincoln, L.P.

1992-02-11T23:59:59.000Z

185

Enthalpies of Formation of Rare-Earth Orthovanadates, REVO4  

Science Conference Proceedings (OSTI)

Rare earth orthovanadates, REVO4, having the zircon structure, form a series of materials interesting for magnetic, optical, sensor, and electronic applications. Enthalpies of formation of REVO4 compounds (RE=Sc, Y, Ce Nd, Sm Tm, Lu) were determined by oxide melt solution calorimetry in lead borate (2PbO {center_dot} 2B2O3) solvent at 1075 K. The enthalpies of formation from oxide components become more negative with increasing RE ionic radius. This trend is similar to that obtained for the rare earth phosphates.

Dorogova, M. [University of California, Davis; Navrotsky, Alexandra [University of California, Davis; Boatner, Lynn A [ORNL

2007-01-01T23:59:59.000Z

186

THE RARE EARTH PEAK: AN OVERLOOKED r-PROCESS DIAGNOSTIC  

Science Conference Proceedings (OSTI)

The astrophysical site or sites responsible for the r-process of nucleosynthesis still remains an enigma. Since the rare earth region is formed in the latter stages of the r-process, it provides a unique probe of the astrophysical conditions during which the r-process takes place. We use features of a successful rare earth region in the context of a high-entropy r-process (S {approx}> 100k{sub B} ) and discuss the types of astrophysical conditions that produce abundance patterns that best match meteoritic and observational data. Despite uncertainties in nuclear physics input, this method effectively constrains astrophysical conditions.

Mumpower, Matthew R.; McLaughlin, G. C. [Department of Physics, North Carolina State University, Raleigh, NC 27695-8202 (United States); Surman, Rebecca, E-mail: mrmumpow@ncsu.edu, E-mail: gail_mclaughlin@ncsu.edu, E-mail: surmanr@union.edu [Department of Physics and Astronomy, Union College, Schenectady, NY 12308 (United States)

2012-06-20T23:59:59.000Z

187

Process to remove rare earth from IFR electrolyte  

DOE Patents (OSTI)

The invention is a process for the removal of rare earths from molten chloride electrolyte salts used in the reprocessing of integrated fast reactor fuel (IFR). The process can be used either continuously during normal operation of the electrorefiner or as a batch process. The process consists of first separating the actinide values from the salt before purification by removal of the rare earths. After replacement of the actinides removed in the first step, the now-purified salt electrolyte has the same uranium and plutonium concentration and ratio as when the salt was removed from the electrorefiner.

Ackerman, John P. (Downers Grove, IL); Johnson, Terry R. (Wheaton, IL)

1994-01-01T23:59:59.000Z

188

Process to remove rare earth from IFR electrolyte  

DOE Patents (OSTI)

The invention is a process for the removal of rare earths from molten chloride electrolyte salts used in the reprocessing of integrated fast reactor fuel (IFR). The process can be used either continuously during normal operation of the electrorefiner or as a batch process. The process consists of first separating the actinide values from the salt before purification by removal of the rare earths. After replacement of the actinides removed in the first step, the now-purified salt electrolyte has the same uranium and plutonium concentration and ratio as when the salt was removed from the electrorefiner. 1 fig.

Ackerman, J.P.; Johnson, T.R.

1994-08-09T23:59:59.000Z

189

Process to remove rare earth from IFR electrolyte  

DOE Patents (OSTI)

The invention is a process for the removal of rare earths from molten chloride electrolyte salts used in the reprocessing of integrated fast reactor fuel (IFR). The process can be used either continuously during normal operation of the electrorefiner or as a batch process. The process consists of first separating the actinide values from the salt before purification by removal of the rare earths. After replacement of the actinides removed in the first step, the now-purified salt electrolyte has the same uranium and plutonium concentration and ratio as when the salt was removed from the electrorefiner.

Ackerman, J.P.; Johnson, T.R.

1992-01-01T23:59:59.000Z

190

Rare earth-transition metal scrap treatment method  

DOE Patents (OSTI)

Rare earth-transition metal (e.g. iron) scrap (e.g. Nd-Fe-B scrap) is melted to reduce the levels of tramp oxygen and nitrogen impurities therein. The tramp impurities are reduced in the melt by virtue of the reaction of the tramp impurities and the rare earth to form dross on the melt. The purified melt is separated from the dross for reuse. The oxygen and nitrogen of the melt are reduced to levels acceptable for reuse of the treated alloy in the manufacture of end-use articles, such as permanent magnets.

Schmidt, Frederick A. (Ames, IA); Peterson, David T. (Ames, IA); Wheelock, John T. (Nevada, IA); Jones, Lawrence L. (Des Moines, IA); Lincoln, Lanny P. (Woodward, IA)

1992-02-11T23:59:59.000Z

191

State Emissions Estimates  

Gasoline and Diesel Fuel Update (EIA)

Estimates of state energy-related carbon dioxide emissions Estimates of state energy-related carbon dioxide emissions Because energy-related carbon dioxide (CO 2 ) constitutes over 80 percent of total emissions, the state energy-related CO 2 emission levels provide a good indicator of the relative contribution of individual states to total greenhouse gas emissions. The U.S. Energy Information Administration (EIA) emissions estimates at the state level for energy-related CO 2 are based on data contained in the State Energy Data System (SEDS). 1 The state-level emissions estimates are based on energy consumption data for the following fuel categories: three categories of coal (residential/commercial, industrial, and electric power sector); natural gas; and ten petroleum products including-- asphalt and road oil, aviation gasoline, distillate fuel, jet fuel, kerosene, liquefied petroleum gases

192

Faster Phase Estimation  

E-Print Network (OSTI)

We develop several algorithms for performing quantum phase estimation based on basic measurements and classical post-processing. We present a pedagogical review of quantum phase estimation and simulate the algorithm to numerically determine its scaling in circuit depth and width. We show that the use of purely random measurements requires a number of measurements that is optimal up to constant factors, albeit at the cost of exponential classical post-processing; the method can also be used to improve classical signal processing. We then develop a quantum algorithm for phase estimation that yields an asymptotic improvement in runtime, coming within a factor of log* of the minimum number of measurements required while still requiring only minimal classical post-processing. The corresponding quantum circuit requires asymptotically lower depth and width (number of qubits) than quantum phase estimation.

Krysta M. Svore; Matthew B. Hastings; Michael Freedman

2013-04-02T23:59:59.000Z

193

Radiation Stress Estimators  

Science Conference Proceedings (OSTI)

The radiation stresses Sij associated with the propagation of wind-generated waves are principal driving forces for several important surf-zone processes. The accurate estimation of the onshore flux of longshore-directed mean momentum Syx, using ...

S. S. Pawka; D. L. Inman; R. T. Guza

1983-09-01T23:59:59.000Z

194

Contamination due to memory effects in filtered vacuum arc plasma deposition systems  

SciTech Connect

Thin film synthesis by filtered vacuum arc plasma deposition is a widely used technique with a number of important emerging technological applications. A characteristic feature of the method is that during the deposition process not only is the substrate coated by the plasma, but the plasma gun itself and the magnetic field coil and/or vacuum vessel section constituting the macroparticle filter are also coated to some extent. If then the plasma gun cathode is changed to a new element, there can be a contamination of the subsequent film deposition by sputtering from various parts of the system of the previous coating species. We have experimentally explored this effect and compared our results with theoretical estimates of sputtering from the SRIM (Stopping and Range of Ions in Matter) code. We find film contamination of order 10-4 - 10-3, and the memory of the prior history of the deposition hardware can be relatively long-lasting.

Martins, D.R.; Salvadori, M.C.; Verdonck, P.; Brown, I.G.

2002-08-13T23:59:59.000Z

195

Rule-Based prediction of rare extreme values  

Science Conference Proceedings (OSTI)

This paper describes a rule learning method that obtains models biased towards a particular class of regression tasks. These tasks have as main distinguishing feature the fact that the main goal is to be accurate at predicting rare extreme values of ...

Rita Ribeiro; Luís Torgo

2006-10-01T23:59:59.000Z

196

Direct Measurement of EGR Cooler Deposit Thermal Properties for Improved Understanding of Cooler Fouling  

DOE Green Energy (OSTI)

Exhaust gas recirculation (EGR) cooler fouling has become a significant issue for compliance with NOX emissions standards. This paper reports results of a study of fundamental aspects of EGR cooler fouling. An apparatus and procedure were developed to allow surrogate EGR cooler tubes to be exposed to diesel engine exhaust under controlled conditions. The resulting fouled tubes were removed and analyzed. Volatile and non-volatile deposit mass was measured for each tube. Thermal diffusivity of the deposited soot cake was measured by milling a window into the tube and using the Xenon flash lamp method. The heat capacity of the deposit was measured at temperatures up to 430 C and was slightly higher than graphite, presumably due to the presence of hydrocarbons. These measurements were combined to allow calculation of the deposit thermal conductivity, which was determined to be 0.041 W/mK, only ~1.5 times that of air and much lower than the 304 stainless steel tube (14.7 W/mK). The main determinant of the deposit thermal conductivity is density, which was measured to be just 2% that of the density of the primary soot particles (or 98% porous). The deposit layer thermal resistance was calculated and compared with estimates of the thermal resistance calculated from gas temperature data during the experiment. The deposit properties were also used to further analyze the temperature data collected during the experiment.

Wang, Hsin [ORNL; Sluder, Scott [ORNL; Storey, John Morse [ORNL

2009-01-01T23:59:59.000Z

197

DETERMINATION OF DEPOSITION RATES FOR COOKING ...  

Science Conference Proceedings (OSTI)

... All calculations of deposition rates were made after ... the in- duct electrostatic precipitator increased the ... (1985) measured the performance of several ...

2005-10-07T23:59:59.000Z

198

Available Technologies: Super High Rate Sputter Deposition  

Andre’ Anders of Berkeley Lab has developed a very high deposition rate magnetron sputtering wherein the surface of a target and the race track zone area of the ...

199

Fundamentals of Electrochemical Deposition, Second Edition - TMS  

Science Conference Proceedings (OSTI)

Jul 25, 2007 ... Fundamentals of Electrochemical Deposition, 2nd Edition by Milan Paunovic and Mordechay Schlesinger provides a ... This is not a handbook.

200

Predicting particle deposition on HVAC heat exchangers  

E-Print Network (OSTI)

gas-side of finned tube heat- exchangers. Journal of Heatsurface interactions in heat exchanger fouling. Journal ofParticle Deposition on Heat Exchangers Epstein, N. , 1988.

Siegel, J A; Nazaroff, William W

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

"Invisible" Archaeological Deposits at Small Milling Sites  

E-Print Network (OSTI)

Deposits at Small Milling Sites ROBERT E. PARR and MARK Q.architechire, bedrock milling features, soil colorlithic scatters or bedrock milling stations), it appears

Parr, Robert E.; Sutton, Mark Q.

1991-01-01T23:59:59.000Z

202

REQUESTS FOR RETIREMENT ESTIMATE  

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

REQUEST FOR RETIREMENT ANNUITY ESTIMATE REQUEST FOR RETIREMENT ANNUITY ESTIMATE Instructions: Please read and answer the following questions thoroughly to include checking all applicable boxes. Unanswered questions may delay processing. Print and Fax back your request form to 202.586.6395 or drop request to GM-169. The request will be assigned to your servicing retirement specialist. They will confirm receipt of your request. SECTION A Request Submitted _____________________ ______________________ ________________________ _____________________ Name (last, first, middle) Last four SSN Date of Birth ___________________________ _________________________ __________________________ Organization Office Telephone Number Fax Number

203

Iterative phase estimation  

E-Print Network (OSTI)

We give an iterative algorithm for phase estimation of a parameter theta, which is within a logarithmic factor of the Heisenberg limit. Unlike other methods, we do not need any entanglement or an extra rotation gate which can perform arbitrary rotations with almost perfect accuracy: only a single copy of the unitary channel and basic measurements are needed. Simulations show that the algorithm is successful. We also look at iterative phase estimation when depolarizing noise is present. It is seen that the algorithm is still successful provided the number of iterative stages is below a certain threshold.

Caleb J O'Loan

2009-04-22T23:59:59.000Z

204

Optical Properties of Zn(O,S) Thin Films Deposited by RF Sputtering, Atomic Layer Deposition, and Chemical Bath Deposition: Preprint  

DOE Green Energy (OSTI)

Zn(O,S) thin films 27 - 100 nm thick were deposited on glass or Cu(InxGa1-x)Se2/Molybdenum/glass with RF sputtering, atomic layer deposition, and chemical bath deposition.

Li, J.; Glynn, S.; Christensen, S.; Mann, J.; To, B.; Ramanathan, K.; Noufi, R.; Furtak, T. E.; Levi, D.

2012-06-01T23:59:59.000Z

205

Budget estimates. Fiscal year 1998  

SciTech Connect

The U.S. Congress has determined that the safe use of nuclear materials for peaceful purposes is a legitimate and important national goal. It has entrusted the Nuclear Regulatory Commission (NRC) with the primary Federal responsibility for achieving that goal. The NRC`s mission, therefore, is to regulate the Nation`s civilian use of byproduct, source, and special nuclear materials to ensure adequate protection of public health and safety, to promote the common defense and security, and to protect the environment. The NRC`s FY 1998 budget requests new budget authority of $481,300,000 to be funded by two appropriations - one is the NRC`s Salaraies and Expenses appropriation for $476,500,000, and the other is NRC`s Office of Inspector General appropriation for $4,800,000. Of the funds appropriated to the NRC`s Salaries and Expenses, $17,000,000, shall be derived from the Nuclear Waste Fund and $2,000,000 shall be derived from general funds. The proposed FY 1998 appropriation legislation would also exempt the $2,000,000 for regulatory reviews and other assistance provided to the Department of Energy from the requirement that the NRC collect 100 percent of its budget from fees. The sums appropriated to the NRC`s Salaries and Expenses and NRC`s Office of Inspector General shall be reduced by the amount of revenues received during FY 1998 from licensing fees, inspection services, and other services and collections, so as to result in a final FY 1998 appropriation for the NRC of an estimated $19,000,000 - the amount appropriated from the Nuclear Waste Fund and from general funds. Revenues derived from enforcement actions shall be deposited to miscellaneous receipts of the Treasury.

1997-02-01T23:59:59.000Z

206

MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS  

E-Print Network (OSTI)

LBNL-49339 MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS J.A. Siegel1,3 * and W.W. Nazaroff2 Department of Energy under contract DE-AC03-76SF00098. #12;MODELING PARTICLE DEPOSITION ON HVAC HEAT, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy. INDEX TERMS HVAC, Fouling

207

Ammonia release method for depositing metal oxides  

DOE Patents (OSTI)

A method of depositing metal oxides on substrates which is indifferent to the electrochemical properties of the substrates and which comprises forming ammine complexes containing metal ions and thereafter effecting removal of ammonia from the ammine complexes so as to permit slow precipitation and deposition of metal oxide on the substrates.

Silver, G.L.; Martin, F.S.

1993-12-31T23:59:59.000Z

208

Particle Deposition in Granular Media. Final report  

Science Conference Proceedings (OSTI)

Objective is to understand aerosol deposition from gas streams flowing through granular media; this is important to the design of granular filtration systems. The following investigations were carried out: transient behavior of granular filtration of aerosols, and stochastic simulation of aerosol deposition in granular media.

Tien, C.

1992-12-31T23:59:59.000Z

209

Focused helium ion beam milling and deposition  

Science Conference Proceedings (OSTI)

The use of a helium ion microscope with an integrated gas injection system for nanofabrication is explored by demonstrating the milling of fine features into single layered graphene and the controlled deposition of tungsten and platinum wires from gaseous ... Keywords: Beam-induced deposition, Focused ion beam, Gas injection system, Graphene, Helium ion microscope

S. A. Boden; Z. Moktadir; D. M. Bagnall; H. Mizuta; H. N. Rutt

2011-08-01T23:59:59.000Z

210

Ash Deposit Physical and Chemical Analysis  

Science Conference Proceedings (OSTI)

This report focuses on identifying ash deposit materials and mounting them to a heat transfer surface for further study. A group of synthetic slag of various compositions was also produced using a sodium silicate binder, Powder River Basin (PRB) bottom ash, and ash cenospheres for porosity to test the effects of pulse detonation techniques on the removal of ash deposits.

2010-12-17T23:59:59.000Z

211

Plasma deposited rider rings for hot displacer  

DOE Patents (OSTI)

A hot cylinder for a cryogenic refrigerator having two plasma spray deposited rider rings of a corrosion and abrasion resistant material provided in the rider ring grooves, wherein the rider rings are machined to the desired diameter and width after deposition. The rider rings have gas flow flats machined on their outer surface.

Kroebig, Helmut L. (Rolling Hills, CA)

1976-01-01T23:59:59.000Z

212

Chemical vapor deposition of mullite coatings  

DOE Patents (OSTI)

This invention is directed to the creation of crystalline mullite coatings having uniform microstructure by chemical vapor deposition (CVD). The process comprises the steps of establishing a flow of reactants which will yield mullite in a CVD reactor, and depositing a crystalline coating from the reactant flow. The process will yield crystalline coatings which are dense and of uniform thickness.

Sarin, Vinod (Lexington, MA); Mulpuri, Rao (Boston, MA)

1998-01-01T23:59:59.000Z

213

Time Resolved Deposition Measurements in NSTX  

SciTech Connect

Time-resolved measurements of deposition in current tokamaks are crucial to gain a predictive understanding of deposition with a view to mitigating tritium retention and deposition on diagnostic mirrors expected in next-step devices. Two quartz crystal microbalances have been installed on NSTX at a location 0.77m outside the last closed flux surface. This configuration mimics a typical diagnostic window or mirror. The deposits were analyzed ex-situ and found to be dominantly carbon, oxygen, and deuterium. A rear facing quartz crystal recorded deposition of lower sticking probability molecules at 10% of the rate of the front facing one. Time resolved measurements over a 4-week period with 497 discharges, recorded 29.2 {micro}g/cm{sup 2} of deposition, however surprisingly, 15.9 {micro}g/cm{sup 2} of material loss occurred at 7 discharges. The net deposited mass of 13.3 {micro}g/cm{sup 2} matched the mass of 13.5 {micro}g/cm{sup 2} measured independently by ion beam analysis. Monte Carlo modeling suggests that transient processes are likely to dominate the deposition.

C.H. Skinner; H. Kugel; A.L. Roquemore; J. Hogan; W.R. Wampler; the NSTX team

2004-08-03T23:59:59.000Z

214

External Dose Estimates from  

E-Print Network (OSTI)

Appendix E External Dose Estimates from NTS Fallout E-1 #12;External Radiation Exposure as the dependence on fallout time of arrival. The most exposed individuals were outdoor workers; the least exposed was about a factor of 20 less than that from "global fallout" from high- yield weapons tests carried out

215

External Dose Estimates from  

E-Print Network (OSTI)

Appendix G External Dose Estimates from Global Fallout G-1 #12;External Radiation Exposure from the fallout from all of these tests was about 0.7 mSv, about equivalent to 2-3 years of external radiation exposure from natural background. In contrast to the fallout from tests at the Nevada Test site

216

EPA Revises Emissions Estimation Methodology  

U.S. Energy Information Administration (EIA)

The changes to the historical emission estimates are the result of revisions to the data and estimation ... b K.D . Smythe, RAND ... RAND Environmental Science and ...

217

Two Cases of Orbital Myositis as a Rare Feature of  

E-Print Network (OSTI)

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Myositis has been reported as a rare manifestation of Lyme disease, and the Lyme disease spirochetes can be an important consideration in the differential diagnosis of unusual cases of myositis, especially in patients who live in or travel to endemic areas. We report the case of two patients who presented with focal orbital myositis which are rare localization for Lyme disease. Myositis were confirmed by magnetic resonance imaging. Diagnosis criteria for Borrelia burgdorferi (B. burgdorferi) infection was supported by (i) medical history (tick bite in an endemic area), (ii) systemic clinical findings (Erythema migrans, neurological manifestation or arthritis), (iii) positive Lyme serology and/or the detection of B. burgdorferi DNA by polymerase chain reaction, as well as (iv) exclusion of other infectious and inflammatory causes. The current cases are reviewed in the context of findings from previous myositis descriptions. 1.

Article Id; Lyme Borreliosis; Arnaud Sauer; Claude Speeg-schatz; Yves Hansmann

2011-01-01T23:59:59.000Z

218

Theoretical Review on CP Violation in Rare B decays  

E-Print Network (OSTI)

We discuss several issues related to direct CP violation in rare $B$ meson decays. We review the use of CP asymmetries in extracting information of strong and weak phases, how the experimental data fit into the overall picture, and the current status of the $K \\pi$ puzzle. We also examine the flavor symmetry assumption using closely related decay modes and extract the weak phase $\\gamma$ from certain $B \\to K^* \\pi$ and $\\rho K$ decays.

Chiang, Cheng-Wei

2008-01-01T23:59:59.000Z

219

Theoretical Review on CP Violation in Rare B decays  

E-Print Network (OSTI)

We discuss several issues related to direct CP violation in rare $B$ meson decays. We review the use of CP asymmetries in extracting information of strong and weak phases, how the experimental data fit into the overall picture, and the current status of the $K \\pi$ puzzle. We also examine the flavor symmetry assumption using closely related decay modes and extract the weak phase $\\gamma$ from certain $B \\to K^* \\pi$ and $\\rho K$ decays.

Cheng-Wei Chiang

2008-08-09T23:59:59.000Z

220

Process for separation of the rare earths by solvent extraction  

DOE Patents (OSTI)

Production rates for solvent extraction separation of the rare earths and yttrium from each other can be improved by the substitution of di(2-ethylhexyl) mono-thiophosphoric acid for di(2-ethylhexyl) phosphoric acid. The di(2-ethylhexyl) mono-thiophosphoric acid does not form an insoluble polymer at approximately 50% saturation as does the former extractant, permitting higher feed solution concentration and thus greater throughput.

Mason, George W. (Clarendon Hills, IL); Lewey, Sonia (Joliet, IL)

1977-04-05T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Estimation of Groundwater Recharge at Pahute Mesa using the Chloride Mass-Balance Method  

SciTech Connect

Groundwater recharge on Pahute Mesa was estimated using the chloride mass-balance (CMB) method. This method relies on the conservative properties of chloride to trace its movement from the atmosphere as dry- and wet-deposition through the soil zone and ultimately to the saturated zone. Typically, the CMB method assumes no mixing of groundwater with different chloride concentrations; however, because groundwater is thought to flow into Pahute Mesa from valleys north of Pahute Mesa, groundwater flow rates (i.e., underflow) and chloride concentrations from Kawich Valley and Gold Flat were carefully considered. Precipitation was measured with bulk and tipping-bucket precipitation gauges installed for this study at six sites on Pahute Mesa. These data, along with historical precipitation amounts from gauges on Pahute Mesa and estimates from the PRISM model, were evaluated to estimate mean annual precipitation. Chloride deposition from the atmosphere was estimated by analyzing quarterly samples of wet- and dry-deposition for chloride in the bulk gauges and evaluating chloride wet-deposition amounts measured at other locations by the National Atmospheric Deposition Program. Mean chloride concentrations in groundwater were estimated using data from the UGTA Geochemistry Database, data from other reports, and data from samples collected from emplacement boreholes for this study. Calculations were conducted assuming both no underflow and underflow from Kawich Valley and Gold Flat. Model results estimate recharge to be 30 mm/yr with a standard deviation of 18 mm/yr on Pahute Mesa, for elevations >1800 m amsl. These estimates assume Pahute Mesa recharge mixes completely with underflow from Kawich Valley and Gold Flat. The model assumes that precipitation, chloride concentration in bulk deposition, underflow and its chloride concentration, have been constant over the length of time of recharge.

Cooper, Clay A [DRI] [DRI; Hershey, Ronald L [DRI] [DRI; Healey, John M [DRI] [DRI; Lyles, Brad F [DRI] [DRI

2013-07-01T23:59:59.000Z

222

Market Impacts of Rare Earth Element Use in Solid Oxide Fuel Cells  

E-Print Network (OSTI)

Contract Number: DE-FE0004002 (Subcontract: S013-JTH-PPM4002 MOD 00) Summary Rare earth elements (REEs) are critical to the function and performance of solid oxide fuel cells (SOFCs) 1. Given the concentration of commercially minable REE deposits and production in China (and especially given recent tightening of its export quota), the US Department of Energy is interested in understanding how REE demand for SOFC applications could impact REE markets and vice versa. Yttria (yttrium oxide), lanthanum oxide, and ceria (cerium oxide) are important materials in the ceramic cells that form the core of any solid oxide fuel cell, imparting on the functional layers of the cells ionic conductivity, electronic conductivity, and/or structural strength. Gadolinium, scandium, and samarium are also used in some SOFC designs. The amounts of REEs contained in state-of-the-art SOFC are modest, and represent less than 5% of annual production (Table 1). Spent SOFC stacks and production waste will likely be recycled for their metal and REE content, which would reduce REE demand for stack replacements by

J. Thijssen Llc

2010-01-01T23:59:59.000Z

223

SYNTHESIS AND CHARACTERIZATION OF SMART FUNCTIONAL COATINGS BY CHEMICAL SOLUTION DEPOSITION METHODS  

SciTech Connect

New coating technology enables the fabrication of low cost structural health monitoring (SHM) and tamper indication devices that can be employed to strengthen national and international safeguards objectives. In particular, such innovations could serve the safeguards community by improving both the timeliness of detection and confidence in verification and monitoring. This work investigates the synthesis of functional surface coatings using chemical solutions deposition methods. Chemical solution deposition has recently received attention in the materials research community due to its unique advantages such as low temperature processing, high homogeneity of final products and the ability to fabricate materials with controlled surface properties and pore structures. The synthesis of functional coatings aimed at modifying the materials conductivity and optical properties was investigated by the incorporation of transition element (e.g. Cr{sup +3}) and rare earth (e.g. Er{sup +3}) serving as dopants in a polymer or gel matrix. The structural and morphological investigation of the as-deposited films was carried out using UV/Vis and photoluminescence (PL) spectroscopy. The as deposited coating was further investigated by scanning electron microscopy and energy dispersive x-ray microscopy.

Mendez-Torres, A.

2011-07-19T23:59:59.000Z

224

Quantification of particle deposition in asymmetrical tracheobronchial model geometry  

Science Conference Proceedings (OSTI)

The primary objective of this study was to quantify the local inspiratory and expiratory aerosol deposition in a highly asymmetric five-generation tracheobronchial tree. User-enhanced commercial codes and self-developed software was used to compute the ... Keywords: Airflow, Central airways, Computational fluid and particle dynamics, Deposition efficiency, Deposition enhancement factor, Deposition fraction, Particle deposition patterns

Árpád Farkas; Imre Balásházy

2008-04-01T23:59:59.000Z

225

Kernel Density Estimation Applied to Tropical Cyclones Genesis in Northwestern Pacific  

Science Conference Proceedings (OSTI)

It is recognized that although the conditions necessary for generating cyclones are actually present in the tropical latitudes for much of the year, the storms themselves are comparatively rare. In addition, the skill of forecasting the occurrence of ... Keywords: genesis, kernel density estimation, tropical cyclone

Zhao Haikun; Wu Liguang; Zhou Weican

2009-07-01T23:59:59.000Z

226

Geology and recognition criteria for uranium deposits of the quartz-pebble conglomerate type. Final report  

SciTech Connect

This report is concerned with Precambrian uraniferous conglomerates. This class of deposit has been estimated to contain between approximately 16 and 35 percent of the global uranium reserve in two rather small areas, one in Canada, the other in South Africa. Similar conglomerates, which are often gold-bearing, are, however, rather widespread, being found in parts of most Precambrian shield areas. Data have been synthesized on the geologic habitat and character of this deposit type. The primary objective has been to provide the most relevant geologic observations in a structural fashion to allow resource studies and exploration to focus on the most prospective targets in the shortest possible time.

Button, A.; Adams, S.S.

1981-03-01T23:59:59.000Z

227

NPP Estimation for Grasslands  

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

NPP for Grasslands NPP for Grasslands Introduction The Oak Ridge DAAC Net Primary Production (NPP) Database includes field measurements from grassland study sites worldwide. The following brief review and discussion is intended to explain the complexity of NPP estimates derived from grassland measurements. There is no single answer to the question, "What is the productivity of the ecosystem at study site A?"; rather there may be range of estimates of NPP, depending upon what data were actually collected and how these data are processed. Although some of these methods for determining NPP for grasslands may be applicable to other vegetation types (e.g., semi-deserts, tundra, or some crops), methods for forests, in particular, are significantly different. Nevertheless, it should be possible to answer the question, "Is this modelled value of NPP reasonable for this ecosystem type at this location?"

228

Apparatus for gas-metal arc deposition  

DOE Patents (OSTI)

Apparatus for gas-metal arc deposition of metal, metal alloys, and metal matrix composites. The apparatus contains an arc chamber for confining a D.C. electrical arc discharge, the arc chamber containing an outlet orifice in fluid communication with a deposition chamber having a deposition opening in alignment with the orifice for depositing metal droplets on a coatable substrate. Metal wire is passed continuously into the arc chamber in alignment with the orifice. Electric arcing between the metal wire anode and the orifice cathode produces droplets of molten metal from the wire which pass through the orifice and into the deposition chamber for coating a substrate exposed at the deposition opening. When producing metal matrix composites, a suspenion of particulates in an inert gas enters the deposition chamber via a plurality of feed openings below and around the orifice so that reinforcing particulates join the metal droplets to produce a uniform mixture which then coats the exposed substrate with a uniform metal matrix composite.

Buhrmaster, Carol L. (Corning, NY); Clark, Denis E. (Idaho Falls, ID); Smartt, Herschel B. (Idaho Falls, ID)

1991-01-01T23:59:59.000Z

229

Method for gas-metal arc deposition  

DOE Patents (OSTI)

Method and apparatus for gas-metal arc deposition of metal, metal alloys, and metal matrix composites. The apparatus contains an arc chamber for confining a D.C. electrical arc discharge, the arc chamber containing an outlet orifice in fluid communication with a deposition chamber having a deposition opening in alignment wiht the orifice for depositing metal droplets on a coatable substrate. Metal wire is passed continuously into the arc chamber in alignment with the orifice. Electric arcing between the metal wire anode and the orifice cathode produces droplets of molten metal from the wire which pass through the orifice and into the deposition chamber for coating a substrate exposed at the deposition opening. When producing metal matrix composites, a suspension of particulates in an inert gas enters the deposition chamber via a plurality of feed openings below and around the orifice so that reinforcing particulates join the metal droplets to produce a uniform mixture which then coats the exposed substrate with a uniform metal matrix composite.

Buhrmaster, Carol L. (Corning, NY); Clark, Denis E. (Idaho Falls, ID); Smartt, Herschel B. (Idaho Falls, ID)

1990-01-01T23:59:59.000Z

230

Method for gas-metal arc deposition  

DOE Patents (OSTI)

Method and apparatus for gas-metal arc deposition of metal, metal alloys, and metal matrix composites are disclosed. The apparatus contains an arc chamber for confining a D.C. electrical arc discharge, the arc chamber containing an outlet orifice in fluid communication with a deposition chamber having a deposition opening in alignment with the orifice for depositing metal droplets on a coatable substrate. Metal wire is passed continuously into the arc chamber in alignment with the orifice. Electric arcing between the metal wire anode and the orifice cathode produces droplets of molten metal from the wire which pass through the orifice and into the deposition chamber for coating a substrate exposed at the deposition opening. When producing metal matrix composites, a suspension of particulates in an inert gas enters the deposition chamber via a plurality of feed openings below and around the orifice so that reinforcing particulates join the metal droplets to produce a uniform mixture which then coats the exposed substrate with a uniform metal matrix composite. 1 fig.

Buhrmaster, C.L.; Clark, D.E.; Smartt, H.B.

1990-11-13T23:59:59.000Z

231

Operated device estimation framework  

E-Print Network (OSTI)

Protective device estimation is a challenging task because there are numerous protective devices present in a typical distribution system. Among various protective devices, auto-reclosers and fuses are the main overcurrent protection on distribution systems. Operation of a protective device in response to a particular fault condition depends upon the protective device’s operating behavior and coordination of various such protective devices. This thesis presents the design and implementation of a protective device estimation algorithm which helps in identifying which protective devices have operated to clear a short circuit condition. The algorithm uses manufacturer’s device details, power quality data measured from substation monitoring devices and power system event features estimated using existing DFA algorithms. The proposed technique can be used to evaluate coordination of these protective devices and helps in locating a fault in a distribution system feeder. This approach is independent of feeder topology and could be readily used for any distribution system. The effectiveness of this algorithm is verified by simulated and actual test data. Suggestions are included for future research and application by electric utilities.

Rengarajan, Janarthanan

2008-12-01T23:59:59.000Z

232

Depletion effects of silicon deposition from methyltrichlorosilane  

DOE Green Energy (OSTI)

The deposition rate of SiC on carbon-coated Nicalon fibers from methyltrichlorosilane in hydrogen was measured as a function of temperature, pressure, total flow rate, and simulated reactant depletion. The results, which are included in this paper together with kinetic information on the stability of methyltrichlorosilane, led to two conclusions: two different mechanisms of deposition can occur depending on whether the methyltrichlorosilane has an opportunity to dissociate into separate silicon- and carbon-containing precursors, and the deposition rate is strongly reduced by the generation of byproduct HCl. The data were fitted to a simple etch model to obtain a kinetic expression that accounts for the significant effect of HCl.

Besmann, T.M.; Sheldon, B.W.; Moss, T.S. III; Kaster, M.D. (Oak Ridge National Lab., TN (United States))

1992-10-01T23:59:59.000Z

233

Chemical vapor deposition of antimicrobial polymer coatings  

E-Print Network (OSTI)

There is large and growing interest in making a wide variety of materials and surfaces antimicrobial. Initiated chemical vapor deposition (iCVD), a solventless low-temperature process, is used to form thin films of polymers ...

Martin, Tyler Philip, 1977-

2007-01-01T23:59:59.000Z

234

Thin Film Deposition Method for Sensor Manufacturing  

Scientists at Los Alamos National Laboratory (LANL) have developed an innovative method for gas sensor manufacturing using a thin film deposition. The thin film requires very little material and can be applied in high throughput applications.

235

Small Business Linked Deposit Program (Oklahoma)  

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

The Small Business Linked Deposit Program provides below-market interest rates for qualified small businesses and certified industrial parks through local financing sources. Loans are for a two...

236

Linked Deposit Loan Program (West Virginia)  

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

The Linked Deposit Loan Program is targeted at small, private firms with 50 or fewer employees and gross annual revenues of $5 million or less comes. This loan offered through the West Virginia...

237

Functionally Graded Materials (FGMs) by Laser Deposition  

Science Conference Proceedings (OSTI)

Abstract Scope, Laser metal deposition is a layered manufacturing process which ... using a computer simulated model and relate a few metallurgical systems as ... of Square Plate and Poisson's Ratio Measurement at Cryogenic Temperatures.

238

Estimation, Economic methodology  

E-Print Network (OSTI)

In this paper I analyse the main strengths and weaknesses of agent-based computational models. I first describe how agent-based simulations can complement more traditional modelling techniques. Then, I rationalise the main theoretical critiques against the use of simulation, which point to the following problematic areas: (i) interpretation of the simulation dynamics, (ii) estimation of the simulation model, and (iii) generalisation of the results. I show that there exist solutions for all these issues. Along the way, I clarify some confounding differences in terminology between the computer science and the economic literature.

Matteo Richiardi; Laboratorio Riccardo; Revelli Centre; Employment Studies; I’m Indebted Francesco Devicienti; Roberto Leombruni; Bruno Contini For Their

2004-01-01T23:59:59.000Z

239

Search for the Rare Leptonic Decays B^+ \\to l^+ \  

SciTech Connect

We have performed a search for the rare leptonic decays B{sup +} {yields} {ell}{sup +} {nu}{sub {ell}}({ell} = e,{mu}), using data collected at the ?(4S) resonance by the BABAR detector at the PEP-II storage ring. In a sample of 468 x 10{sup 6} B{bar B} pairs we find no evidence for a signal and set an upper limit on the branching fractions B(B{sup +} {yields} e{sup +}{nu}{sub e}) < 1.9 x 10{sup -6} at the 90% confidence level, using a Bayesian approach.

Aubert, B.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Martinelli, M.; Palano, A.; Pappagallo, M.; /INFN, Bari /Bari U.; Eigen, G.; Stugu, B.; Sun, L.; /Bergen U.; Battaglia, M.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; Osipenkov, I.L.; /LBL, Berkeley /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San Diego /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /Frascati /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /Harvard U. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U. /Maryland U. /Massachusetts U., Amherst /MIT, LNS /McGill U. /INFN, Milan /Milan U. /INFN, Milan /INFN, Milan /Milan U. /Mississippi U. /Montreal U. /Mt. Holyoke Coll. /INFN, Naples /Naples U. /INFN, Naples /INFN, Naples /Naples U. /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U. /Oregon U. /INFN, Padua /Padua U. /INFN, Padua /INFN, Padua /Padua U. /Paris U., VI-VII /Pennsylvania U. /INFN, Perugia /Perugia U. /INFN, Pisa /Pisa U. /INFN, Pisa /Pisa, Scuola Normale Superiore /INFN, Pisa /Pisa U. /INFN, Pisa /Princeton U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /INFN, Rome /Rome U. /INFN, Rome /Rostock U. /Rutherford /DSM, DAPNIA, Saclay /SLAC /South Carolina U. /Stanford U., Phys. Dept. /SUNY, Albany /Tennessee U. /Texas U. /Texas U., Dallas /INFN, Turin /Turin U. /INFN, Trieste /Trieste U. /Valencia U., IFIC /Victoria U. /Warwick U. /Wisconsin U., Madison

2009-06-19T23:59:59.000Z

240

Predicting rare events in chemical reactions: the Kramers approach  

E-Print Network (OSTI)

In a well-stirred system undergoing chemical reactions, fluctuations in the reaction propensities are approximately captured by the corresponding chemical Langevin equation. Within this context, we discuss in this work how the Kramers escape theory can be used to predict rare events in chemical reactions. As an example, we apply our approach to a recently proposed model on cell proliferation with relevance to skin cancer [P.B. Warren, Phys. Rev. E {\\bf 80}, 030903 (2009)]. In particular, we provide an analytical explanation for the form of the exponential exponent observed in the onset rate of uncontrolled cell proliferation.

Lee, Chiu Fan

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Resonance electronic Raman scattering in rare earth crystals  

Science Conference Proceedings (OSTI)

The intensities of Raman scattering transitions between electronic energy levels of trivalent rare earth ions doped into transparent crystals were measured and compared to theory. A particle emphasis was placed on the examination of the effect of intermediate state resonances on the Raman scattering intensities. Two specific systems were studied: Ce/sup 3 +/(4f/sup 1/) in single crystals of LuPO/sub 4/ and Er/sup 3 +/(4f/sup 11/) in single crystals of ErPO/sub 4/. 134 refs., 92 figs., 33 tabs.

Williams, G.M.

1988-11-10T23:59:59.000Z

242

Ash Deposit Physical and Chemical Analysis  

Science Conference Proceedings (OSTI)

As part of the Electric Power Research Institutes (EPRIs) ongoing Boiler Tube Failure Reduction (BTFR) program, this report has been compiled to discuss chemical and mechanical mechanisms that lead to the formation of ash deposits. Ash deposits are a known cause of several boiler tube failure mechanisms, which can not only impact plant performance, but also lead to millions of dollars in lost revenue due to forced outages.

2010-12-17T23:59:59.000Z

243

Heat Recovery Steam Generator (HRSG) Deposits  

Science Conference Proceedings (OSTI)

Under-deposit corrosion represents the second leading mechanism of chemistry-influenced heat recovery steam generator (HRSG) tube failures (HTFs) and third leading cause of major availability losses. This report was prepared, in recognition of the lack of information, to assemble the state of knowledge on deposition in HRSG high-pressure (HP) evaporator tubing and to identify the major deficiencies in that knowledge. Findings of this effort can be used to establish immediate remediation and correction of...

2009-11-11T23:59:59.000Z

244

Ash Deposit Physical and Chemical Analysis  

Science Conference Proceedings (OSTI)

As part of the Electric Power Research Institutes (EPRIs) ongoing Boiler Tube Failure Reduction (BTFR) program, this report has been compiled to discuss chemical and mechanical mechanisms that lead to the formation of ash deposits. Ash deposits are a known cause of a number of boiler tube failure mechanisms, which can not only impact plant performance, but lead to millions of dollars in lost revenue due to forced outages.

2010-12-17T23:59:59.000Z

245

Semiconductor assisted metal deposition for nanolithography applications  

DOE Patents (OSTI)

An article of manufacture and method of forming nanoparticle sized material components. A semiconductor oxide substrate includes nanoparticles of semiconductor oxide. A modifier is deposited onto the nanoparticles, and a source of metal ions are deposited in association with the semiconductor and the modifier, the modifier enabling electronic hole scavenging and chelation of the metal ions. The metal ions and modifier are illuminated to cause reduction of the metal ions to metal onto the semiconductor nanoparticles.

Rajh, Tijana (Naperville, IL); Meshkov, Natalia (Downers Grove, IL); Nedelijkovic, Jovan M. (Belgrade, YU); Skubal, Laura R. (West Brooklyn, IL); Tiede, David M. (Elmhurst, IL); Thurnauer, Marion (Downers Grove, IL)

2002-01-01T23:59:59.000Z

246

Method of deposition by molecular beam epitaxy  

DOE Patents (OSTI)

A method is described for reproducibly controlling layer thickness and varying layer composition in an MBE deposition process. In particular, the present invention includes epitaxially depositing a plurality of layers of material on a substrate with a plurality of growth cycles whereby the average of the instantaneous growth rates for each growth cycle and from one growth cycle to the next remains substantially constant as a function of time.

Chalmers, Scott A. (Albuquerque, NM); Killeen, Kevin P. (Albuquerque, NM); Lear, Kevin L. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

247

Perspective---Cognitive Reactions to Rare Events: Perceptions, Uncertainty, and Learning  

Science Conference Proceedings (OSTI)

Research provides some observations about learning from events that appear to be rare or quite unusual. All learning has uncertain consequences, but learning from rare events is especially problematic. Learners see many idiosyncrasies and exogenous interference, ... Keywords: learning, rare events, reliable data, uncertainty

William H. Starbuck

2009-09-01T23:59:59.000Z

248

Utility Savings Estimators | Building Energy Codes Program  

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

the Utility Savings Estimators: Commercial Estimator | Residential Estimator (These *.zip files contain the Microsoft Excel macro-enabled (*.xlsm) estimator files. You will...

249

Estimation of the Mean Field Bias of Radar Rainfall Estimates  

Science Conference Proceedings (OSTI)

In this paper procedures are developed for estimating the mean field bias of radar rainfall estimates. Mean field bias is modeled as a random process that varies not only from storm to storm but also over the course of a storm. State estimates of ...

James A. Smith; Witold F. Krajewski

1991-04-01T23:59:59.000Z

250

ARM facility captures rare tornado data [EVS News]  

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

ARM facility captures rare tornado data ARM facility captures rare tornado data June 13, 2013 Every spring, tornadoes thunder across five states, from Kansas to Texas, and alerts are common. However, by Monday, May 20, it was clear that this time the alert had a different urgency to it. The turn of events leading up to the EF-5 tornado that wreaked havoc in Moore, Oklahoma, provided a unique opportunity for scientists to sample the environment preceding a severe weather event. Read more about how EVS scientist, Donna Holdridge, supported the ARM program in the full article. Raw data from the additional radiosonde launches preceding the severe weather events of May 20 in Oklahoma. The blue line identifies the temperature, which decreases with increasing altitude. The red line is the dew point, the temperature at which the air is 100% saturated with its water vapor content. Where the dew point approaches the actual temperature, the air is nearing 100% relative humidity near the ground-ideal conditions for tornado events.

251

Precise trace rare earth analysis by radiochemical neutron activation  

Science Conference Proceedings (OSTI)

A rare earth group separation scheme followed by normal Ge(Li), low energy photon detector (LEPD), and Ge(Li)-NaI(Tl) coincidence-noncoincidence spectrometry significantly enhances the detection sensitivity of individual rare earth elements (REE) at or below the ppB level. Based on the selected ..gamma..-ray energies, normal Ge(Li) counting is favored for /sup 140/La, /sup 170/Tb, and /sup 169/Yb; LEPD is favored for low ..gamma..-ray energies of /sup 147/Nd, /sup 153/Sm, /sup 166/Ho, and /sup 169/Yb; and noncoincidence counting is favored for /sup 141/Ce, /sup 143/Ce, /sup 142/Pr, /sup 153/Sm, /sup 171/Er, and /sup 175/Yb. The detection of radionuclides /sup 152m/Eu, /sup 159/Gd, and /sup 177/Lu is equally sensitive by normal Ge(Li) and noncoincidence counting; /sup 152/Eu is equally sensitive by LEPD and normal Ge(Li); and /sup 153/Gd and /sup 170/Tm is equally favored by all the counting modes. Overall, noncoincidence counting is favored for most of the REE. Precise measurements of the REE were made in geological and biological standards.

Laul, J.C.; Lepel, E.A.; Weimer, W.C.; Wogman, N.A.

1981-06-01T23:59:59.000Z

252

Chemical vapor deposition of amorphous silicon films from disilane  

SciTech Connect

Amorphous silicon films for fabrication of solar cells have been deposited by thermal chemical vapor deposition (CVD) from disilane (Si/sub 2/H/sub 6/) using a tubular flow reactor. A mathematical description for the CVD reactor was developed and solved by a numerical procedure. The proposed chemical reaction network for the model is based on silylene (SiH/sub 2/) insertion in the gas phase and film growth from SiH/sub 2/ and silicon polymers (Si/sub n/N/sub 2n/, n approx. 10). Estimates of the rate constants have been obtained for trisilane decomposition, silicon polymer formation, and polymer dehydrogenation. The silane unimolecular decomposition rate constants were corrected for pressure effects. The model behavior is compared to the experimental results over the range of conditions: reactor temperature (360 to 485/sup 0/C), pressures (2 to 48 torr), and gas holding time (1 to 70 s). Within the above range of conditions, film growth rate varies from 0.01 to 30 A/s. Results indicate that silicon polymers are the main film precursors for gas holding times greater than 3 s. Film growth by silylene only becomes important at short holding times, large inert gas dilution, and positions near the beginning of the reactor hot zone.

Bogaert, R.J.

1986-01-01T23:59:59.000Z

253

Gaseous dry deposition of atmospheric mercury: A comparison of two surface resistance models for deposition to semiarid vegetation  

Science Conference Proceedings (OSTI)

In the United States, atmospheric mercury (Hg) deposition, from regional and international sources, is the largest contributor to increased Hg concentrations in bodies of water leading to bioaccumulation of methyl mercury in fish. In this work, modeled dry deposition velocities (vd) for gaseous Hg are calculated using two surface resistance parameterizations found in the literature. The flux is then estimated as the product of the species concentration and modeled vd. The calculations utilize speciated atmospheric mercury concentrations measured during an annual monitoring campaign in southern Idaho. Gaseous elemental mercury (GEM) and reactive gaseous mercury (RGM) were monitored with Tekran models 2537A and 1130, respectively. Two anemometers collected meteorological data, including one fast-response three-dimensional sonic anemometer to measure turbulence parameters. For the flux calculation, three resistances are required to model the mechanisms that transport gaseous Hg from the atmosphere to the surface, with the surface resistance being the largest source of error. Results from two surface resistance models are presented. In particular, the downward flux is sensitive to the choice of model and input parameters such as seasonal category and mesophyll resistance. A comparison of annual GEM and RGM fluxes calculated using the two models shows good agreement for RGM (3.2% difference for annual deposition); however, for the low-solubility species of GEM, the models show a 64% difference in annual fluxes, with a range of 32% to 200% in seasonal fluxes. Results indicate the importance of understanding the diurnal variation of the physical processes modeled in the surface resistance parameterization for vd.

Heather A. Holmes; Eric R. Pardyjak; Kevin D. Perry; Michael L. Abbott

2011-07-01T23:59:59.000Z

254

Estimating Civilian Owned Firearms  

E-Print Network (OSTI)

Most of the world’s firearms are privately owned. 1 They include improvised craft guns as well as handguns, rifles, shotguns, and machine guns. The legal definition of a civilian firearm varies; some states allow civilian ownership of certain firearms that are restricted to military use in other states. The word civilian is used here to refer to actual possession, not legality. In 2007, the Small Arms Survey estimated the number of civilian firearm ownership worldwide at approximately 650 million weapons out of some 875 then in existence (see Figures 1 and 2). National ownership rates range from a high of 90 firearms per every 100 people in the United States, to one firearm or less for every 100 residents in countries like South Korea and Ghana (see Table 1). With the world’s factories delivering millions of newly manufactured firearms annually, and with far fewer being destroyed, civilian ownership is growing (Small Arms Survey, 2007, p. 39). Poor record-keeping and the near absence of reporting requirements for detailed information complicate assessments of global stockpiles of small arms and light weapons. When it comes to estimating civilian firearm ownership, differences in national gun culture —each country’s unique combination of historic and current sources of supply, laws and attitudes toward firearms ownership—often have distinct effects on the classification, ownership and perception of firearms. In addition, categories of firearm holders may overlap, as some individuals may use their private firearms at work as security guards, in armed groups, or in gangs.

unknown authors

2011-01-01T23:59:59.000Z

255

Empirical Methods of Cost Estimation  

Science Conference Proceedings (OSTI)

...D.P. Hoult and C.L. Meador, Manufacturing Cost Estimating, Materials Selection and Design, Vol 20, ASM Handbook,

256

Optimal estimation with limited measurements  

Science Conference Proceedings (OSTI)

This paper introduces a sequential estimation problem with two decision makers, or agents, who work as members of a team. One of the agents sits at an observation post, and makes sequential observations about the state of an underlying stochastic process ... Keywords: WSNs, limited information, networked control systems, optimal estimation, real-time control, real-time monitoring, recursive estimation, sequential estimation, wireless networks, wireless sensor networks

Orhan C. Imer; Tamer Basar

2010-01-01T23:59:59.000Z

257

Critical Materials and Rare Futures: Ames Laboratory Signs a New Agreement  

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

Critical Materials and Rare Futures: Ames Laboratory Signs a New Critical Materials and Rare Futures: Ames Laboratory Signs a New Agreement on Rare-Earth Research Critical Materials and Rare Futures: Ames Laboratory Signs a New Agreement on Rare-Earth Research June 15, 2011 - 7:07pm Addthis The plasma torch in the Retech plasma furnace is one tool used in Materials Preparation Center to create ultra-high purity metal alloy samples, particularly rare-earth metals, located at the Ames Lab. | Photo Courtesy of the Ames Lab Flickr The plasma torch in the Retech plasma furnace is one tool used in Materials Preparation Center to create ultra-high purity metal alloy samples, particularly rare-earth metals, located at the Ames Lab. | Photo Courtesy of the Ames Lab Flickr Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science

258

Grant Helps Make U.S. Rare Earth Magnets More Common | Department of Energy  

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

Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common August 6, 2010 - 12:12pm Addthis With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | Kevin Craft Electron Energy Corporation is one of a kind. According to Peter Dent, vice president of business development for the

259

Grant Helps Make U.S. Rare Earth Magnets More Common | Department of Energy  

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

Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common August 6, 2010 - 12:12pm Addthis With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | Kevin Craft Electron Energy Corporation is one of a kind. According to Peter Dent, vice president of business development for the

260

RECOMMENDED TRITIUM OXIDE DEPOSITION VELOCITY FOR USE IN SAVANNAH RIVER SITE SAFETY ANALYSES  

Science Conference Proceedings (OSTI)

The Defense Nuclear Facilities Safety Board (DNFSB) has recently questioned the appropriate value for tritium deposition velocity used in the MELCOR Accident Consequence Code System Ver. 2 (Chanin and Young 1998) code when estimating bounding dose (95th percentile) for safety analysis (DNFSB 2011). The purpose of this paper is to provide appropriate, defensible values of the tritium deposition velocity for use in Savannah River Site (SRS) safety analyses. To accomplish this, consideration must be given to the re-emission of tritium after deposition. Approximately 85% of the surface area of the SRS is forested. The majority of the forests are pine plantations, 68%. The remaining forest area is 6% mixed pine and hardwood and 26% swamp hardwood. Most of the path from potential release points to the site boundary is through forested land. A search of published studies indicate daylight, tritiated water (HTO) vapor deposition velocities in forest vegetation can range from 0.07 to 2.8 cm/s. Analysis of the results of studies done on an SRS pine plantation and climatological data from the SRS meteorological network indicate that the average deposition velocity during daylight periods is around 0.42 cm/s. The minimum deposition velocity was determined to be about 0.1 cm/s, which is the recommended bounding value. Deposition velocity and residence time (half-life) of HTO in vegetation are related by the leaf area and leaf water volume in the forest. For the characteristics of the pine plantation at SRS the residence time corresponding to the average, daylight deposition velocity is 0.4 hours. The residence time corresponding to the night-time deposition velocity of 0.1 cm/s is around 2 hours. A simple dispersion model which accounts for deposition and re-emission of HTO vapor was used to evaluate the impact on exposure to the maximally exposed offsite individual (MOI) at the SRS boundary (Viner 2012). Under conditions that produce the bounding, 95th percentile MOI exposure, i.e., low wind speed, weak turbulence, night, low deposition velocity, the effect of deposition and re-emission on MOI exposure was found to be very small. The exposure over the two hour period following arrival of the plume was found to be decreased by less than 0.05 %. Furthermore the sensitivity to deposition velocity was low. Increasing deposition velocity to 0.5 cm/s reduced exposure to 0.3 %. After a 24 hour period, an MOI would have been exposed to all of the released material. Based on the low sensitivity of MOI exposure to the value of deposition velocity when re-emission is considered, it is appropriately conservative to use a 0.0 cm/s effective deposition velocity for safety analysis in the MACCS2 code.

Lee, P.; Murphy, C.; Viner, B.; Hunter, C.; Jannik, T.

2012-04-03T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Vacuum deposited polymer/silver reflector material  

DOE Green Energy (OSTI)

Weatherable, low cost, front surface, solar reflectors on flexible substrates would be highly desirable for lamination to solar concentrator panels. The method to be described in this paper may permit such reflector material to be fabricated for less than 50 cents per square foot. Vacuum deposited Polymer/Silver/Polymer reflectors and Fabry-Perot interference filters were fabricated in a vacuum web coating operation on polyester substrates. Reflectivities were measured in the wavelength range from .4 {mu}m to .8 {mu}m. It is hoped that a low cost substrate can be used with the substrate laminated to the concentrator and the weatherable acrylic polymer coating facing the sun. This technique should be capable of deposition line speeds approaching 1500 linear feet/minute. Central to this technique is a new vacuum deposition process for the high rate deposition of polymer films. This polymer process involves the flash evaporation of an acrylic monomer onto a moving substrate. The monomer is subsequently cured by an electron beam or ultraviolet light. This high speed polymer film deposition process has been named the PML process - for Polymer Multi-Layer.

Affinito, J.; Martin, P.; Gross, M.; Bennett, W.

1994-07-01T23:59:59.000Z

262

Apparatus for laser assisted thin film deposition  

DOE Patents (OSTI)

A pulsed laser deposition apparatus uses fiber optics to deliver visible output beams. One or more optical fibers are coupled to one or more laser sources, and delivers visible output beams to a single chamber, to multiple targets in the chamber or to multiple chambers. The laser can run uninterrupted if one of the deposition chambers ceases to operate because other chambers can continue their laser deposition processes. The laser source can be positioned at a remote location relative to the deposition chamber. The use of fiber optics permits multi-plexing. A pulsed visible laser beam is directed at a generally non-perpendicular angle upon the target in the chamber, generating a plume of ions and energetic neutral species. A portion of the plume is deposited on a substrate as a thin film. A pulsed visible output beam with a high pulse repetition frequency is used. The high pulse repetition frequency is greater than 500 Hz, and more preferably, greater than about 1000 Hz. Diamond-like-carbon (DLC) is one of the thin films produced using the apparatus.

Warner, Bruce E. (Pleasanton, CA); McLean, II, William (Oakland, CA)

1996-01-01T23:59:59.000Z

263

Automatic Age Estimation Based on Facial Aging Patterns  

E-Print Network (OSTI)

Abstract—While recognition of most facial variations, such as identity, expression, and gender, has been extensively studied, automatic age estimation has rarely been explored. In contrast to other facial variations, aging variation presents several unique characteristics which make age estimation a challenging task. This paper proposes an automatic age estimation method named AGES (AGing pattErn Subspace). The basic idea is to model the aging pattern, which is defined as the sequence of a particular individual’s face images sorted in time order, by constructing a representative subspace. The proper aging pattern for a previously unseen face image is determined by the projection in the subspace that can reconstruct the face image with minimum reconstruction error, while the position of the face image in that aging pattern will then indicate its age. In the experiments, AGES and its variants are compared with the limited existing age estimation methods (WAS and AAS) and some well-established classification methods (kNN, BP, C4.5, and SVM). Moreover, a comparison with human perception ability on age is conducted. It is interesting to note that the performance of AGES is not only significantly better than that of all the other algorithms, but also comparable to that of the human observers. Index Terms—Computer vision, pattern recognition, machine learning, face and gesture recognition, age estimation. 1

Xin Geng; Zhi-hua Zhou; Senior Member; Kate Smith-miles; Senior Member

2007-01-01T23:59:59.000Z

264

Microsoft Word - rare earth speech 3-18 6am  

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

REMARKS PREPARED FOR DELIVERY REMARKS PREPARED FOR DELIVERY TECHNOLOGY AND RARE EARTH METALS CONFERENCE 2010 KEYNOTE ADDRESS DAVID SANDALOW ASSISTANT SECRETARY FOR POLICY & INTERNATIONAL AFFAIRS U.S. DEPARTMENT OF ENERGY WASHINGTON, D.C. MARCH 17, 2010 [Acknowledgements.] 1. INTRODUCTION Thank you for the invitation to speak at this important conference. At energy conferences today, no topic is hotter than shale gas. The story is striking: recoverable reserves of shale gas have increased six-fold in the past few years, thanks to new drilling technologies. This increase has been transformational, with U.S. natural gas imports now predicted to drop steadily in the next decade and beyond, whereas just a few years ago imports were projected to climb for the foreseeable future. Large shale gas reserves are believed to exist

265

Public to have rare opportunity to tour Neutron Science Center  

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

Rosenfest: celebrate Louis Rosen, tour LANSCE Rosenfest: celebrate Louis Rosen, tour LANSCE Public to have rare opportunity to tour Neutron Science Center Tour attendees can expect to see many facets of the LANSCE, including areas along the linear accelerator beam line, the control room area, and one or more experimental areas. May 10, 2011 Aerial View of Neutron Science Center Aerial View of Neutron Science Center Contact James Rickman Communicatons Office (505) 665-9203 Email LANL Rosenfest will celebrate life of LANSCE founder Louis Rosen and offer tour LOS ALAMOS, New Mexico, May 10, 2011-Members of the public will have an unusual opportunity to tour the Los Alamos Neutron Science Center from 1 to 5 p.m. on Friday, May 20, 2011, as part of Rosenfest, a celebration of LANSCE founder Louis Rosen and the remarkable facility he conceived. In

266

Microsoft Word - Rare Earth Update for RFI 110523final  

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

J. Thijssen, LLC P: 206 229 6882 J. Thijssen, LLC P: 206 229 6882 4910 163 rd Ave NE Redmond, WA 98052 e: jant@jthijssen.com Solid Oxide Fuel Cells and Critical Materials: A Review of Implications J. Thijssen, LLC Report Number: R102 06 04D1 Date: May 10, 2011 Prepared for: National Energy Technology Laboratory, In Sub-Contract to Leonardo Technologies, Inc. Contract Number: DE-FE0004002 (Subcontract: S013-JTH-PPM4002 MOD 00) 2 Summary The US DOE has identified a number of materials that are both used by clean energy technologies and are at risk of supply disruptions in the short term. Several of these materials, especially the rare earth elements (REEs) yttrium, cerium, and lanthanum were identified by DOE as critical (USDOE 2010) and are crucial to the function and performance of solid oxide

267

SEPARATION OF TRANSURANIC ELEMENTS FROM RARE EARTH COMPOUNDS  

DOE Patents (OSTI)

A process of separating neptunium and plutonium values from rare earths and alkaline earth fission products present on a solid mixed actinide carrier (Th or U(IV) oxalate or fluoride) --fission product carrier (LaF/sub 3/, CeF/sub 3/, SrF/sub 2/, CaF/sub 2/, YF/sub 3/, La oxalate, cerous oxalate, Sr oxalate, Ca oxalate or Y oxalate) by extraction of the actinides at elevated temperature with a solution of ammonium fluoride and/or ammonium oxalate is described. Separation of the fission-product-containing carriers from the actinide solution formed and precipitation of the neptunium and plutonium from the solution with mineral acid are also accomplished. (AEC)

Kohman, T.P.

1961-11-21T23:59:59.000Z

268

Cryogenic distribution for the Facility for Rare Isotope Beams  

SciTech Connect

The Facility for Rare Isotope Beams (FRIB) is a new National User Facility for nuclear science funded by the Department of Energy Office of Science and operated by Michigan State University. The FRIB accelerator linac consists of superconducting radio-frequency (SCRF) cavities operating at 2 K and SC magnets operating at 4.5 K all cooled by a large scale cryogenic refrigeration system. A major subsystem of the cryogenic system will be the distribution system whose primary components will include a distribution box, the transfer lines and the interconnect valve boxes at each cryogenic device. An overview of the conceptual design of the distribution system including engineering details, capabilities and schedule is described.

S. Jones, Dana Arenius, Adam Fila, P. Geutschow, Helmut Laumer, Matt Johnson, Cory S. Waltz, J. G. Weisend II

2012-06-01T23:59:59.000Z

269

Method for deposition of a conductor in integrated circuits  

DOE Patents (OSTI)

A method is described for fabricating integrated semiconductor circuits and, more particularly, for the selective deposition of a conductor onto a substrate employing a chemical vapor deposition process. By way of example, tungsten can be selectively deposited onto a silicon substrate. At the onset of loss of selectivity of deposition of tungsten onto the silicon substrate, the deposition process is interrupted and unwanted tungsten which has deposited on a mask layer with the silicon substrate can be removed employing a halogen etchant. Thereafter, a plurality of deposition/etch back cycles can be carried out to achieve a predetermined thickness of tungsten.

Creighton, J. Randall (Albuquerque, NM); Dominguez, Frank (Albuquerque, NM); Johnson, A. Wayne (Albuquerque, NM); Omstead, Thomas R. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

270

Fissible Deposit Characterization at the Former Oak Ridge K-25 Gaseous Diffusion Plant by {sup 252}CF-Source-Driven Measurements  

Science Conference Proceedings (OSTI)

The Deposit Removal Project was undertaken with the support of the U. S. Department of Energy at the East Tennessee Technology Park (ETTP) formerly the Oak Ridge K-25 Site. The project team performed the safe removal of the hydrated uranyl fluoride (UO{sub 2}F{sub 2}) deposits from the K-29 Building of the former Oak Ridge Gaseous Diffusion Plant. The deposits had developed as a result of air leakage into UF{sub 6} gas process pipes; UO{sub 2}F{sub 2} became hydrated by moisture from the air and deposited inside the pipes. The mass, its distribution, and the hydrogen content [that is, the ratio of H to U (H/U)], were the key parameters that controlled the nuclear criticality safety of the deposits. Earlier gamma-ray spectrometry measurements in K-29 had identified the largest deposits in the building. The first and third largest deposits in the building were measured in this program. The first deposit, found in the Unit 2, Cell 7, B-Line Outlet process pipe (called the ''Hockey Stick'') was about 1,300 kg ({+-} 50% uncertainty) at 3.34 wt% {sup 235}U enrichment ({+-}50% uncertainty) and according to the gamma-ray spectroscopy was uniformly distributed. The second deposit (the third-largest deposit in the building), found in the Unit 2, Cell 6, A-Line Outlet process pipe (called the ''Tee-Pipe''), had a uranium deposit estimated to be about 240 kg ({+-} 50% uncertainty) at 3.4 wt % {sup 235}U enrichment ({+-} 20% uncertainty). Before deposit removal activities began, the Deposit Removal Project team needed to survey the inside of the pipes intrusively to assess the nuclear criticality safety of the deposits. Therefore, the spatial distribution of the deposits, the total uranium deposit mass, and the moderation level resulting from hydration of the deposits, all of which affect nuclear criticality safety were required. To perform the task safely and effectively, the Deposit Removal Project team requested that Oak Ridge National Laboratory (ORNL) characterize the two largest deposits with the {sup 252}Cf-source-driven transmission (CFSDT) technique, an active neutron interrogation method developed for use at the Oak Ridge Y-12 Plant to identify nuclear weapons components in containers. The active CFSDT measurement technique uses CFSDT time-of-flight measurements of prompt neutrons and gamma rays from an externally introduced {sup 252}Cf source.

Hannon, T.F.; Mihalczo, J.T.; Mullens, J.A.; Uckan, T.; Valentine, T.E.; Wyatt, M.S.

1998-05-01T23:59:59.000Z

271

Worldwide deposition of strontium-90 through 1990  

Science Conference Proceedings (OSTI)

Strontium-90 results from the Environmental Measurements Laboratory`s (EML) Global Fallout Program (GFP) are presented for the years 1987 through 1990. Quarterly {sup 90}Sr deposition results for the 66 sampling locations of EML`s GFP were generally low, indicating that there was no significant release of fission products into the atmosphere during this period. The global {sup 90}Sr deposition during these 4 years was lower than it has been for any similar period since this program began in 1958. Since there was no major atmospheric source of {sup 90}Sr during this period, the global cumulative deposit of {sup 90}Sr continued to decrease by radioactive decay to a 27 year low of 311.4 Pbq.

Monetti, M.A.

1996-03-01T23:59:59.000Z

272

Line-of-sight deposition method  

DOE Patents (OSTI)

A line-of-sight method of depositing a film having substantially 100% of theoretical density on a substrate. A pressure vessel contains a target source having a surface thereof capable of emitting particles therefrom and a substrate with the source surface and the substrate surface positioned such that the source surface is substantially parallel to the direction of the particles impinging upon the substrate surface, the distance between the most remote portion of the substrate surface receiving the particles and the source surface emitting the particles in a direction parallel to the substrate surface being relatively small. The pressure in the vessel is maintained less than about 5 microns to prevent scattering and permit line-of-sight deposition. By this method the angles of incidence of the particles impinging upon the substrate surface are in the range of from about 45/sup 0/ to 90/sup 0/ even when the target surface area is greatly expanded to increase the deposition rate.

Patten, J.W.; McClanahan, E.D.; Bayne, M.A.

1980-04-16T23:59:59.000Z

273

Line-of-sight deposition method  

DOE Patents (OSTI)

A line-of-sight method of depositing a film having substantially 100% of theoretical density on a substrate. A pressure vessel contains a target source having a surface thereof capable of emitting particles therefrom and a substrate with the source surface and the substrate surface positioned such that the source surface is substantially parallel to the direction of the particles impinging upon the substrate surface, the distance between the most remote portion of the substrate surface receiving the particles and the source surface emitting the particles in a direction parallel to the substrate surface being relatively small. The pressure in the vessel is maintained less than about 5 microns to prevent scattering and permit line-of-sight deposition. By this method the angles of incidence of the particles impinging upon the substrate surface are in the range of from about 45.degree. to 90.degree. even when the target surface area is greatly expanded to increase the deposition rate.

Patten, James W. (Richland, WA); McClanahan, Edwin D. (Richland, WA); Bayne, Michael A. (West Richland, WA)

1981-01-01T23:59:59.000Z

274

Morphology effects on polydispersed aerosol deposition rates  

Science Conference Proceedings (OSTI)

In the analysis of severe nuclear accidents, accurate prediction of aerosol deposition is important since, among other things, this influences the distribution of radioactive decay heat within the primary system and containment compartments. The fact that the aerosol cloud is not comprised of dense isolated spherical particles of only one size inevitably complicates such calculations but must be taken into account. Some particle deposition mechanisms are more sensitive to particle size and morphology than others so that simplifying assumptions valid for one mechanism [such as particle thermophoresis (notoriously size and morphology insensitive)] may be seriously in error for others (e.g., convective Brownian diffusion or eddy impaction). This paper deals with aggregate aerosol deposition.

Rosner, D.E.; Tandon, P. [Yale Univ., New Haven, CT (United States); Khalil, Y.F. [Northeast Utilities Service Co., Berlin, CT (United States)

1997-12-01T23:59:59.000Z

275

Supplemental heating of deposition tooling shields  

DOE Patents (OSTI)

A method of reducing particle generation from the thin coating deposited on the internal surfaces of a deposition chamber which undergoes temperature variation greater than 100.degree. C. comprising maintaining the temperature variation of the internal surfaces low enough during the process cycle to keep thermal expansion stresses between the coating and the surfaces under 500 MPa. For titanium nitride deposited on stainless steel, this means keeping temperature variations under approximately 70.degree. C. in a chamber that may be heated to over 350.degree. C. during a typical processing operation. Preferably, a supplemental heater is mounted behind the upper shield and controlled by a temperature sensitive element which provides feedback control based on the temperature of the upper shield.

Ohlhausen, James A. (Albuquerque, NM); Peebles, Diane E. (Albuquerque, NM); Hunter, John A. (Albuquerque, NM); Eckelmeyer, Kenneth H. (Albuquerque, NM)

2000-01-01T23:59:59.000Z

276

Apparatus and method for laser deposition of durable coatings  

DOE Patents (OSTI)

Disclosed are method and apparatus for depositing durable coatings onto the surface of a substrate without heating the entire substrate to high temperatures by using lasers to heat the substrate and dissociate a deposition gas. The apparatus comprises a deposition chamber for enclosing the substrate upon which a coating is to be deposited, gas delivery means for directing a flow of deposition gas on the substrate, a first laser for heating the substrate, and a second laser for irradiating the deposition gas to dissociate the gas. The method includes placing a substrate within a vacuum deposition chamber and directing a flow of deposition gas on the substrate. Then the substrate is heated with a first laser while the deposition gas is irradiated with a second laser to dissociate the deposition gas.

Veligdan, J.T.; Vanier, P.; Barletta, R.E.

1993-12-31T23:59:59.000Z

277

Dry deposition of pan to grassland vegetation  

Science Conference Proceedings (OSTI)

Peroxyacetyl nitrate or PAN (CH{sub 3}C(O)OONO{sub 2}) is formed in the lower troposphere via photochemical reactions involving nitrogen oxides (NO{sub x}) and non-methane hydrocarbons (NMHCs). PAN has a lifetime in the free troposphere of about three months and is removed by photolysis or reaction with OH. Dry deposition will decrease its lifetime, although the few measurements that have been made indicate that this process is slow. Measurements of the uptake of PAN by alfalfa in growth chambers indicated that the dry deposition velocity (downward flux divided by concentration at a specified height) was 0.75 cm s{sup {minus}1}. Garland and Penkett measured a dry deposition velocity of 0.25 cm s{sup {minus}1} for PAN to grass and soil in a return-flow wind tunnel. Shepson et al. (1992) analyzed trends of PAN and O{sub 3} concentrations in the stable nocturnal boundary layer over mixed deciduous/coniferous forests at night, when leaf stomata were closed, and concluded that the deposition velocity for PAN was at least 0.5 cm s{sup {minus}1}. We measured the dry deposition velocity of PAN to a grassland site in the midwestern United States with a modified Bowen ratio technique. Experiments were conducted on selected days during September, October, and November of 1990. An energy balance Bowen ratio station was used to observe the differences in air temperature and water vapor content between heights of 3.0 and 0.92 m and to evaluate the surface energy balance. Air samples collected at the same two heights in Teflon {reg_sign} bags were analyzed for PAN by a gas chromatographic technique. We present an example of the variations of PAN concentrations and gradients observed during the day and compare measurements of the dry deposition velocity to expectations based on the physicochemical properties of PAN.

Doskey, P.V.; Wesely, M.L.; Cook, D.R.; Gao, W.

1994-01-01T23:59:59.000Z

278

A RARE EARLY-TYPE STAR REVEALED IN THE WING OF THE SMALL MAGELLANIC CLOUD  

SciTech Connect

Sk 183 is the visually brightest star in the N90 nebula, a young star-forming region in the Wing of the Small Magellanic Cloud (SMC). We present new optical spectroscopy from the Very Large Telescope which reveals Sk 183 to be one of the most massive O-type stars in the SMC. Classified as an O3-type dwarf on the basis of its nitrogen spectrum, the star also displays broadened He I absorption, which suggests a later type. We propose that Sk 183 has a composite spectrum and that it is similar to another star in the SMC, MPG 324. This brings the number of rare O2- and O3-type stars known in the whole of the SMC to a mere four. We estimate physical parameters for Sk 183 from analysis of its spectrum. For a single-star model, we estimate an effective temperature of 46 {+-} 2 kK, a low mass-loss rate of {approx}10{sup -7} M{sub Sun} yr{sup -1}, and a spectroscopic mass of 46{sup +9}{sub -8} M{sub Sun} (for an adopted distance modulus of 18.7 mag to the young population in the SMC Wing). An illustrative binary model requires a slightly hotter temperature ({approx}47.5 kK) for the primary component. In either scenario, Sk 183 is the earliest-type star known in N90 and will therefore be the dominant source of hydrogen-ionizing photons. This suggests Sk 183 is the primary influence on the star formation along the inner edge of the nebula.

Evans, C. J. [UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom); Hainich, R.; Oskinova, L. M.; Hamann, W.-R.; Todt, H. [Institute for Physics and Astronomy, University of Potsdam, 14476 Potsdam (Germany); Gallagher III, J. S. [Department of Astronomy, University of Wisconsin-Madison, 5534 Sterling, 475 North Charter St., Madison, WI 53706 (United States); Chu, Y.-H.; Gruendl, R. A. [Astronomy Department, University of Illinois, 1002 W. Green Street, Urbana, IL 61801 (United States); Henault-Brunet, V. [Scottish Universities Physics Alliance (SUPA), Institute for Astronomy, University of Edinburgh, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)

2012-07-10T23:59:59.000Z

279

Boiler Water Deposition Model for Fossil-Fueled Power Plants  

Science Conference Proceedings (OSTI)

The feasibility and initial development of an integrated, deterministic model of the various processes governing deposition in fossil boilers was assessed in the Electric Power Research Institute (EPRI) reports Boiler Water Deposition Model for Fossil Fuel Plants, Part 1: Feasibility Study (1004931), published in 2004; Boiler Water Deposition Model for Fossil Fuel Plants, Part 2: Initial Deterministic Model Development and Deposit Characterization (1012207) published in 2007; and Boiler Water Deposition ...

2009-03-12T23:59:59.000Z

280

Boiler Water Deposition Model for Fossil-Fueled Power Plants  

Science Conference Proceedings (OSTI)

The feasibility and initial development of an integrated, deterministic model of the various processes governing deposition in fossil boilers was assessed in the following Electric Power Research Institute (EPRI) reports: 1004931, Boiler Water Deposition Model: Part 1: Feasibility Study, published in 2004; 1012207, Boiler Water Deposition Model for Fossil Fuel Plants, Part 2: Initial Deterministic Model Development and Deposit Characterization, published in 2007; 1014128, Boiler Water Deposition Model fo...

2010-01-27T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Method of blasting a subterranean deposit  

SciTech Connect

A blasting method is described for mining of a subterranean oil-shale deposit. A raise is driven upward into a designated block of a subterranean oil-shale deposit from the roof of an undercutting cavity. A number of blasting holes are driven horizontally into the block from the raise in a fan-shaped pattern at each of a number of vertically spaced levels and are at least partially loaded with explosives. The charges are detonated sequentially in an upward progression to effect fragmentation and expansion of the overlaying block into the undercutting cavity. (11 claims)

Janssen, A.T.

1975-11-04T23:59:59.000Z

282

Atmospheric Pressure Deposition for Electrochromic Windows  

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

Atmospheric Pressure Deposition Atmospheric Pressure Deposition for Electrochromic Windows TDM - Karma Sawyer Robert C. Tenent National Renewable Energy Laboratory robert.tenent@nrel.gov 303-384-6775 4/4/2013 Insulating Glass Unit (IGU) Glass Transparent Conductor (TC) Active Electrode Counter Electrode Ion Conductor 2 | Building Technologies Office eere.energy.gov Purpose and Objectives * Expense - Current market price of $50-$100/ft 2 - Projections indicate under $20/ft 2 needed - A new production paradigm is required * Aesthetics - Architects hesitant to adopt "smurf glass"

283

Atmospheric Pressure Deposition for Electrochromic Windows  

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

Atmospheric Pressure Deposition Atmospheric Pressure Deposition for Electrochromic Windows TDM - Karma Sawyer Robert C. Tenent National Renewable Energy Laboratory robert.tenent@nrel.gov 303-384-6775 4/4/2013 Insulating Glass Unit (IGU) Glass Transparent Conductor (TC) Active Electrode Counter Electrode Ion Conductor 2 | Building Technologies Office eere.energy.gov Purpose and Objectives * Expense - Current market price of $50-$100/ft 2 - Projections indicate under $20/ft 2 needed - A new production paradigm is required * Aesthetics - Architects hesitant to adopt "smurf glass"

284

Treating paraffin deposits in producing oil wells  

Science Conference Proceedings (OSTI)

Paraffin deposition has been a problem for operators in many areas since the beginning of petroleum production from wells. An extensive literature search on paraffin problems and methods of control has been carried out, and contact was made with companies which provide chemicals to aid in the treatment of paraffin problems. A discussion of the nature of paraffins and the mechanisms of this deposition is presented. The methods of prevention and treatment of paraffin problems are summarized. Suggested procedures for handling paraffin problems are provided. Suggestions for areas of further research testing are given.

Noll, L.

1992-01-01T23:59:59.000Z

285

A Black Hole Conjecture and Rare Decays in Theories with Low Scale Gravity  

E-Print Network (OSTI)

In models with large extra dimensions, where the fundamental gravity scale can be in the electroweak range, gravitational effects in particle physics may be noticeable even at relatively low energies. In this paper, we perform simple estimates of the decays of elementary particles with a black hole intermediate state. Since black holes are believed to violate global symmetries, particle decays can violate lepton and baryon numbers. Whereas previous literature has claimed incompatibility between these rates (e.g. $p$-decay) and existing experimental bounds, we find suppressed baryon and lepton-violating rates due to a new conjecture about the nature of the virtual black holes. We assume here that black holes lighter than the (effective) Planck mass must have zero electric and color charge and zero angular momentum -- this statement is true in classical general relativity and we make the conjecture that it holds in quantum gravity as well. If true, the rates for proton-decay, neutron-antineutron oscillations, and lepton-violating rare decays are suppressed to below experimental bounds even for large extra dimensions with TeV-scale gravity. Neutron-antineutron oscillations and anomalous decays of muons, $\\tau$-leptons, and $K$ and $B$-mesons open a promising possibility to observe TeV gravity effects with a minor increase of existing experimental accuracy.

C. Bambi; A. D. Dolgov; K. Freese

2006-06-30T23:59:59.000Z

286

State estimation on correlated copies  

E-Print Network (OSTI)

State estimation is usually analyzed in the situation when copies are in a product state, either mixed or pure. We investigate here the concept of state estimation on correlated copies. We analyze state estimation on correlated N qubit states, which are permutationally invariant. Using a correlated state we try to estimate as good as possible the direction of the Bloch vector of a single particle reduced density matrix. We derive the optimal fidelity for all permutation invariant states. We find the optimal state, which yields the highest estimation fidelity among the states with the same reduced density matrix. Interestingly this state is not a product state. We also point out that states produced by optimal universal cloning machines are the worst form the point of view of estimating the reduced density matrix.

Rafal Demkowicz-Dobrzanski

2004-12-20T23:59:59.000Z

287

Selective Area ALD Deposition with Nanolithography  

Science Conference Proceedings (OSTI)

Well-defined nano-patterned surfaces after metal-oxide deposition will be ... Effect of Initial Microstructure on the Processing of Titanium Using Equal ... of Ferroelectric Poly(Vinylidene Fluoride-Trifluoroethylene) Copolymer Films ... Sonochemistry as a Tool for Synthesis of Ion-Substituted Calcium Phosphate Nanoparticles.

288

Exploration for uranium deposits, Grants mineral belt  

Science Conference Proceedings (OSTI)

Uranium ore deposits in the Grants mineral belt, New Mexico, occur in fluvial sandstones in the Morrison Formation (Jurassic). Uranium mineralization is concentrated by a dark-gray to black substance that has been identified as humate, which is derived from decaying vegetation. Black ore is truncated by overlying sandstone in at least three ore deposits, documenting an early age for mineralization. Ore deposits in the Grants mineral belt vary greatly in size and shape, tend to occur in clusters, and often present difficult drill targets. Current exploration is largely a matter of drilling in stages to distinguish favorable from unfavorable ground on a wide spacing, to seek mineralization in favorable ground, and to conduct close-spaced drilling in mineralized areas. Criteria for favorability differ among exploration groups but generally include 1) presence of a host sandstone, 2) anomalous mineralization, 3) color of the host rock, 4) presence of carbonaceous matter, and 5) position of the area relative to mineralized trends. A description of the drilling sequence, from ore discovery to the development of a mine at the Johnny M deposit (in the east part of the Ambrosia Lake district), exemplifies the problem of predicting where orebodies may occur. A study of the drill data at the Johnny M indicates the uranium ore is not related to specific geologic features other than humate, which is commonly associated with coalified plant fragments in mudstone-rich parts of the host sandstone.

Fitch, D.C.

1980-01-01T23:59:59.000Z

289

Deposition Diagnostics for Next-step Devices  

DOE Green Energy (OSTI)

The scale-up of deposition in next-step devices such as ITER will pose new diagnostic challenges. Codeposition of hydrogen with carbon needs to be characterized and understood in the initial hydrogen phase in order to mitigate tritium retention and qualify carbon plasma facing components for DT operations. Plasma facing diagnostic mirrors will experience deposition that is expected to rapidly degrade their reflectivity, posing a new challenge to diagnostic design. Some eroded particles will collect as dust on interior surfaces and the quantity of dust will be strictly regulated for safety reasons - however diagnostics of in-vessel dust are lacking. We report results from two diagnostics that relate to these issues. Measurements of deposition on NSTX with 4 Hz time resolution have been made using a quartz microbalance in a configuration that mimics that of a typical diagnostic mirror. Often deposition was observed immediately following the discharge suggesting that diagnostic shutters should be closed as soon as possible after the time period of interest. Material loss was observed following a few discharges. A novel diagnostic to detect surface particles on remote surfaces was commissioned on NSTX.

C.H. Skinner; A.L. Roquemore; the NSTX team; A. Bader; W.R. Wampler

2004-06-15T23:59:59.000Z

290

Methods for preparation of nanocrystalline rare earth phosphates for lighting applications  

DOE Patents (OSTI)

Disclosed here are methods for the preparation of optionally activated nanocrystalline rare earth phosphates. The optionally activated nanocrystalline rare earth phosphates may be used as one or more of quantum-splitting phosphor, visible-light emitting phosphor, vacuum-UV absorbing phosphor, and UV-emitting phosphor. Also disclosed herein are discharge lamps comprising the optionally activated nanocrystalline rare earth phosphates provided by these methods.

Comanzo, Holly Ann; Manoharan, Mohan; Martins Loureiro, Sergio Paulo; Setlur, Anant Achyut; Srivastava, Alok Mani

2013-04-16T23:59:59.000Z

291

Frequency tracking and parameter estimation for robust quantum state estimation  

SciTech Connect

In this paper we consider the problem of tracking the state of a quantum system via a continuous weak measurement. If the system Hamiltonian is known precisely, this merely requires integrating the appropriate stochastic master equation. However, even a small error in the assumed Hamiltonian can render this approach useless. The natural answer to this problem is to include the parameters of the Hamiltonian as part of the estimation problem, and the full Bayesian solution to this task provides a state estimate that is robust against uncertainties. However, this approach requires considerable computational overhead. Here we consider a single qubit in which the Hamiltonian contains a single unknown parameter. We show that classical frequency estimation techniques greatly reduce the computational overhead associated with Bayesian estimation and provide accurate estimates for the qubit frequency.

Ralph, Jason F. [Department of Electrical Engineering and Electronics, University of Liverpool, Brownlow Hill, Liverpool L69 3GJ (United Kingdom); Jacobs, Kurt [Department of Physics, University of Massachusetts at Boston, 100 Morrissey Blvd, Boston, Massachusetts 02125 (United States); Hill, Charles D. [Centre for Quantum Computation and Communication Technology, School of Physics, University of Melbourne, Victoria 3010 (Australia)

2011-11-15T23:59:59.000Z

292

Effects of nuclear symmetry energy on eta meson production and its rare decay to the dark U-boson in heavy-ion reactions  

E-Print Network (OSTI)

Using a relativistic transport model ART1.0, we explore effects of nuclear symmetry energy on eta meson production and its rare decay to the dark U-boson in heavy-ion reactions from 0.2 to 10 GeV/nucleon available at several current and future facilities. The yield of eta mesons at sub-threshold energies is found to be very sensitive to the density dependence of nuclear symmetry energy. Above a beam energy of about 5 GeV/nucleon in Au+Au reactions, the sensitivity to symmetry energy disappears. Using the branching ratio of the rare eta decay (eta->gamma U) available in the literature, we estimate the maximum cross section for the U-boson production in the energy range considered, providing a useful reference for future U-boson search using heavy-ion reactions.

Gao-Chan Yong; Bao-An Li

2013-03-05T23:59:59.000Z

293

Effects of nuclear symmetry energy on eta meson production and its rare decay to the dark U-boson in heavy-ion reactions  

E-Print Network (OSTI)

Using a relativistic transport model ART1.0, we explore effects of nuclear symmetry energy on eta meson production and its rare decay to the dark U-boson in heavy-ion reactions from 0.2 to 10 GeV/nucleon available at several current and future facilities. The yield of eta mesons at sub-threshold energies is found to be very sensitive to the density dependence of nuclear symmetry energy. Above a beam energy of about 5 GeV/nucleon in Au+Au reactions, the sensitivity to symmetry energy disappears. Using the branching ratio of the rare eta decay (eta->gamma+U) available in the literature, we estimate the maximum cross section for the U-boson production in the energy range considered, providing a useful reference for future U-boson search using heavy-ion reactions.

Yong, Gao-Chan

2013-01-01T23:59:59.000Z

294

The Influence of Nb on the Rare Earth Heavy Rail Steel Mechanical ...  

Science Conference Proceedings (OSTI)

Micro-alloying through the additions of Nb or rare earth (RE) elements has been proved ... Group Metals by the Metal-ion Reducing Bacterium Shewanella Algae.

295

The Influence of Nb on the Rare Earth Heavy Rail Steel Mechanical ...  

Science Conference Proceedings (OSTI)

Micro-alloying through the additions of Nb or rare earth (RE) elements has been proved ... of a Retired Cast Austentic Stainless Steel Hydrogen Reformer Tube.

296

Layered Rare Earth and Transition Metal Materials: Synthesis, Modification and Catalytic Application.  

E-Print Network (OSTI)

?? This research contains three parts; the first two parts of this thesis demonstrate the synthesis of rare earth layered materials and their application in… (more)

Zhang, Yashan

2013-01-01T23:59:59.000Z

297

The influence of Nb on the rare earth heavy rail steel mechanical ...  

Science Conference Proceedings (OSTI)

Micro-alloying through the additions of Nb or rare earth (RE) elements has been proved to be efficient to enhance the strength and corrosion resistance of rail ...

298

Incorporating Dy in Rare-earth Magnets Through a Low Melting Dy ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Approximately 8wt% to 10wt% Dy is needed in the conventionally manufactured rare earth magnets used for the traction motors of electric and ...

299

(3) Tue PM-a Rare Earth Free Magnets - Programmaster.org  

Science Conference Proceedings (OSTI)

... magnet motors (IPM) for hybride and electric vehicles and direct drive wind generators. Current motor designs use rare earth permanent magnets which easily ...

300

Most of rare missense alleles in humans are deleterious:implications for evolution of complex disease and associationstudies  

SciTech Connect

The accumulation of mildly deleterious missense mutations inindividual human genomes has been proposed to be a genetic basis forcomplex diseases. The plausibility of this hypothesis depends onquantitative estimates of the prevalence of mildly deleterious de novomutations and polymorphic variants in humans and on the intensity ofselective pressure against them. We combined analysis of mutationscausing human Mendelian diseases, human-chimpanzee divergence andsystematic data on human SNPs and found that about 20 percent of newmissense mutations in humans result in a loss of function, while about 27percent are effectively neutral. Thus, more than half of new missensemutations have mildly deleterious effects. These mutations give rise tomany low frequency deleterious allelic variants in the human populationas evident from a new dataset of 37 genes sequenced in over 1,500individual human chromosomes. Surprisingly, up to 70 percent of lowfrequency missense alleles are mildly deleterious and associated with aheterozygous fitness loss in the range 0.001-0.003. Thus, the low allelefrequency of an amino acid variant can by itself serve as a predictor ofits functional significance. Several recent studies have reported asignificant excess of rare missense variants in disease populationscompared to controls in candidate genes or pathways. These studies wouldbe unlikely to work if most rare variants were neutral or if rarevariants were not a significant contributor to the genetic component ofphenotypic inheritance. Our results provide a justification for thesetypes of candidate gene (pathway) association studies and imply thatmutation-selection balance may be a feasible mechanism for evolution ofsome common diseases.

Kryukov, Gregory V.; Pennacchio, Len A.; Sunyaev, Shamil R.

2006-10-24T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Probing rare physical trajectories with Lyapunov weighted dynamics  

E-Print Network (OSTI)

The transition from order to chaos has been a major subject of research since the work of Poincare, as it is relevant in areas ranging from the foundations of statistical physics to the stability of the solar system. Along this transition, atypical structures like the first chaotic regions to appear, or the last regular islands to survive, play a crucial role in many physical situations. For instance, resonances and separatrices determine the fate of planetary systems, and localised objects like solitons and breathers provide mechanisms of energy transport in nonlinear systems such as Bose-Einstein condensates and biological molecules. Unfortunately, despite the fundamental progress made in the last years, most of the numerical methods to locate these 'rare' trajectories are confined to low-dimensional or toy models, while the realms of statistical physics, chemical reactions, or astronomy are still hard to reach. Here we implement an efficient method that allows one to work in higher dimensions by selecting trajectories with unusual chaoticity. As an example, we study the Fermi-Pasta-Ulam nonlinear chain in equilibrium and show that the algorithm rapidly singles out the soliton solutions when searching for trajectories with low level of chaoticity, and chaotic-breathers in the opposite situation. We expect the scheme to have natural applications in celestial mechanics and turbulence, where it can readily be combined with existing numerical methods

Julien Tailleur; Jorge Kurchan

2006-11-27T23:59:59.000Z

302

State-of-Knowledge on Deposition, Part 2: Assessment of Deposition Activity in Fossil Plant Units  

Science Conference Proceedings (OSTI)

Over the last 20 years, substantial advances have been made in the understanding and control of fossil plant cycle chemistry. In spite of these advances, deposition activity, most notably in boilers and steam turbines, remains an issue of concern to many organizations that operate fossil units. The underlying science of deposition in fossil unit components has not, with the exception of steam turbines, been studied extensively under the EPRI Boiler and Turbine Steam and Cycle Chemistry Program. This repo...

2003-12-08T23:59:59.000Z

303

ESTIMATION OF RADIOLYTIC GAS GENERATION RATE FOR CYLINDRICAL RADIOACTIVE WASTE PACKAGES - APPLICATION TO SPENT ION EXCHANGE RESIN CONTAINERS  

DOE Green Energy (OSTI)

Radioactive waste packages containing water and/or organic substances have the potential to radiolytically generate hydrogen and other combustible gases. Typically, the radiolytic gas generation rate is estimated from the energy deposition rate and the radiolytic gas yield. Estimation of the energy deposition rate must take into account the contributions from all radionuclides. While the contributions from non-gamma emitting radionuclides are relatively easy to estimate, an average geometry factor must be computed to determine the contribution from gamma emitters. Hitherto, no satisfactory method existed for estimating the geometry factors for a cylindrical package. In the present study, a formulation was developed taking into account the effect of photon buildup. A prototype code, called PC-CAGE, was developed to numerically solve the integrals involved. Based on the selected dimensions for a cylinder, the specified waste material, the photon energy of interest and a value for either the absorption or attenuation coefficient, the code outputs values for point and average geometry factors. These can then be used to estimate the internal dose rate to the material in the cylinder and hence to calculate the radiolytic gas generation rate. Besides the ability to estimate the rates of radiolytic gas generation, PC-CAGE can also estimate the dose received by the container material. This is based on values for the point geometry factors at the surface of the cylinder. PC-CAGE was used to calculate geometry factors for a number of cylindrical geometries. Estimates for the absorbed dose rate in container material were also obtained. The results for Ontario Power Generation's 3 m3 resin containers indicate that about 80% of the source gamma energy is deposited internally. In general, the fraction of gamma energy deposited internally depends on the dimensions of the cylinder, the material within it and the photon energy; the fraction deposited increases with increasing dimensions of the cylinder and decreases with increasing photon energy.

Husain, A.; Lewis, Brent J.

2003-02-27T23:59:59.000Z

304

Low emissivity Ag/Ta/glass multilayer thin films deposited by sputtering  

SciTech Connect

Ta is deposited on a glass substrate as an interlayer for the two-dimensional growth of Ag thin films because Ta has good thermal stability and can induce a negative surface-energy change in Ag/glass. From the transmission electron microscopy results, we concluded that the Ag crystals in the bottom layer (seemingly on Ag/Ta) were flattened; this was rarely observed in the three-dimensional growth mode. Comparing Ag/Ta/glass with Ag/glass, we found that the Ta interlayer was effective in reducing both the resistance and the emissivity, accompanied by the relatively high transmittance in the visible region. In particular, Ag(9 nm)/Ta(1 nm)/glass film showed 0.08 of the emissivity, including {approx}61% of the transmittance in the visible region (wavelength: 550 nm).

Park, Sun Ho [Division of Advanced Materials Engineering, Kongju National University, Budaedong, Cheonan City (Korea, Republic of); Lee, Kee Sun [Division of Advanced Materials Engineering, Kongju National University, Budaedong, Cheonan City (Korea, Republic of); Green Home Energy Technology Center, Cheonan City (Korea, Republic of); Sivasankar Reddy, A. [Green Home Energy Technology Center, Cheonan City (Korea, Republic of)

2011-09-15T23:59:59.000Z

305

Evaluation of the Gas Production Potential of Marine HydrateDeposits in the Ulleung Basin of the Korean East Sea  

Science Conference Proceedings (OSTI)

Although significant hydrate deposits are known to exist in the Ulleung Basin of the Korean East Sea, their survey and evaluation as a possible energy resource has not yet been completed. However, it is possible to develop preliminary estimates of their production potential based on the limited data that are currently available. These include the elevation and thickness of the Hydrate-Bearing Layer (HBL), the water depth, and the water temperature at the sea floor. Based on this information, we developed estimates of the local geothermal gradient that bracket its true value. Reasonable estimates of the initial pressure distribution in the HBL can be obtained because it follows closely the hydrostatic. Other critical information needs include the hydrate saturation, and the intrinsic permeabilities of the system formations. These are treated as variables, and sensitivity analysis provides an estimate of their effect on production. Based on the geology of similar deposits, it is unlikely that Ulleung Basin accumulations belong to Class 1 (involving a HBL underlain by a mobile gas zone). If Class 4 (disperse, low saturation accumulations) deposits are involved, they are not likely to have production potential. The most likely scenarios include Class 2 (HBL underlain by a zone of mobile water) or Class 3 (involving only an HBL) accumulations. Assuming nearly impermeable confining boundaries, this numerical study indicates that large production rates (several MMSCFD) are attainable from both Class 2 and Class 3 deposits using conventional technology. The sensitivity analysis demonstrates the dependence of production on the well design, the production rate, the intrinsic permeability of the HBL, the initial pressure, temperature and hydrate saturation, as well as on the thickness of the water zone (Class 2). The study also demonstrates that the presence of confining boundaries is indispensable for the commercially viable production of gas from these deposits.

Moridis, George J.; Reagan, Matthew T.; Kim, Se-Joon; Seol,Yongkoo; Zhang, Keni

2007-11-16T23:59:59.000Z

306

Synthesis, structure and characterization of molybdenum and rare earth chalcogenides  

E-Print Network (OSTI)

This dissertation focuses on the synthetic exploratory synthesis of molybdenum chalcogenides and rare earth metal-rich ternary tellurides as a part of an effort to produce molecular building blocks of molybdenum chalcogenide clusters and to explore their structural relationships with solid state cluster networks. The tightly cross-linked Mo3nSe3n+2(n = 2, 3, ...?) clusters and chain compounds react with alkali metal cyanide or cyanide salt mixtures at temperatures of 450-675 °C to yield reduced, cyanide-terminated molybdenum chalcogenide clusters that are thermodynamically stable. At temperatures of 650-675 °C, linear chain compounds I6[Mo6Se8(CN)4(CN)2/2] (MI = K, Cs) were prepared from reactions of Mo6Se8 or elemental starting materials, Mo and Se with excess molten cyanide (KCN, CsCN). These are the first known compounds to feature linking of Mo6Se8 clusters via cyanide bridges. Magnetic susceptibility and EPR measurements indicate that there is one unpaired electron per cluster. A new reduced molecular octahedral complex, Na8[Mo6Se8(CN)6]•20H2O was prepared by the reduction of [Mo6Se8(CN)6]7-with Zn in an aqueous NaCN solution. Single crystal structure was determined. Cyclic voltammetric measurements in basic aqueous media show multiple reversible redox waves corresponding to [Mo6Se8(CN)6]6-/7-, [Mo6Se8(CN)6]7-/8-, [Mo6Se8(CN)6]8-/9-redox couples with half-wave potentials of E1/2 = -0.442 V, -0.876 V, and 11.369 V respectively versus the standard hydrogen electrode (SHE). UV-Vis studies support the presence of the reduced cluster compound. New reduced molecular tetrahedral complexes, K7Na[Mo4Se4(CN)12]•5H2O•MeOH, Na4Cs7[Mo4Se4(CN)12]Cl3, Na8[Mo4Se4(CN)12], and Na4K4[Mo4Se4(CN)12]•12H2O were prepared. Preparation of Na8[Mo4Se4(CN)12] is an improved method for the synthesis of the Mo4Se4 core. Half-wave potentials of E1/2 for the [Mo4Se4(CN)12]6-/7-and [Mo4Se4(CN)12]7-/8-couples are 0.233 V, and -0.422 V respectively versus SHE. The molecular cubane clusters [Mo4Se4(CN)12]7-/8-play an essential role in the process by which the discrete [Mo6Se8(CN)6]6-and [Mo6Se8(CN)6]are excised from the CN-linked chain compound, K6Mo6Se8(CN)5. A new rare-earth telluride compound with the empirical composition of Gd4NiTe2 was synthesized from a high-temperature solid-state reaction. Gd4MTe2 (M = Ni) crystallizes in the orthorhombic space group Pnma. This unprecedented structure consists of a cluster condensation of Ni-centered gadolinium tricapped trigonal prisms along the rectangular faces of the trigonal prism such that the Ni atoms act as two of the caps to the trigonal prisms.

Magliocchi, Carmela Luisa

2005-05-01T23:59:59.000Z

307

Aging of reflective roofs: soot deposition  

Science Conference Proceedings (OSTI)

Solar-reflective roofs remain cooler than absorptive roofs and thus conserve electricity otherwise needed for air conditioning. A currently controversial aspect of solar-reflective cool roofing is the extent to which an initially high solar reflectance decreases with time. We present experimental data on the spectral absorption of deposits that accumulate on roofs, and we attribute most of the absorption to carbon soot originally produced by combustion. The deposits absorb more at short wavelengths (e.g., in the blue) than in the red and infrared, imparting a slightly yellow tinge to formerly white surfaces. The initial rate of reflectance reduction by soot accumulation is consistent with known emission rates that are due to combustion. The long-term reflectance change appears to be determined by the ability of the soot to adhere to the roof, resisting washout by rain.

Berdahl, Paul; Akbari, Hashem; Rose, Leanna S.

2001-05-01T23:59:59.000Z

308

Ultrashort pulse laser deposition of thin films  

DOE Patents (OSTI)

Short pulse PLD is a viable technique of producing high quality films with properties very close to that of crystalline diamond. The plasma generated using femtosecond lasers is composed of single atom ions with no clusters producing films with high Sp.sup.3 /Sp.sup.2 ratios. Using a high average power femtosecond laser system, the present invention dramatically increases deposition rates to up to 25 .mu.m/hr (which exceeds many CVD processes) while growing particulate-free films. In the present invention, deposition rates is a function of laser wavelength, laser fluence, laser spot size, and target/substrate separation. The relevant laser parameters are shown to ensure particulate-free growth, and characterizations of the films grown are made using several diagnostic techniques including electron energy loss spectroscopy (EELS) and Raman spectroscopy.

Perry, Michael D. (Livermore, CA); Banks, Paul S. (Livermore, CA); Stuart, Brent C. (Fremont, CA)

2002-01-01T23:59:59.000Z

309

Apparatus and method for photochemical vapor deposition  

DOE Patents (OSTI)

A photochemical vapor deposition apparatus includes a reactor housing having a window in one wall above a reaction chamber in the housing. A transparent curtain divides the reaction chamber into a reaction zone and a flush zone. At least one substrate is mounted in the reaction zone in light communication with the window so that ultraviolet radiation may penetrate through the window into the reaction zone. The window is kept clear by a gas flowing through the flush zone.

Jackson, Scott C. (Wilmington, DE); Rocheleau, Richard E. (Wilmington, DE)

1987-03-31T23:59:59.000Z

310

Electrostatic force assisted deposition of graphene  

Science Conference Proceedings (OSTI)

An embodiment of a method of depositing graphene includes bringing a stamp into contact with a substrate over a contact area. The stamp has at least a few layers of the graphene covering the contact area. An electric field is developed over the contact area. The stamp is removed from the vicinity of the substrate which leaves at least a layer of the graphene substantially covering the contact area.

Liang, Xiaogan (Berkeley, CA)

2011-11-15T23:59:59.000Z

311

Microwave plasma chemical vapor deposition of nano-composite...  

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

plasma chemical vapor deposition of nano-composite CPt thin-films Title Microwave plasma chemical vapor deposition of nano-composite CPt thin-films Publication Type Journal...

312

Experimental investigation of aerosol deposition on slot-and...  

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

Experimental investigation of aerosol deposition on slot-and joint-type leaks Title Experimental investigation of aerosol deposition on slot-and joint-type leaks Publication Type...

313

A molecular view of vapor deposited glasses  

SciTech Connect

Recently, novel organic glassy materials that exhibit remarkable stability have been prepared by vapor deposition. The thermophysical properties of these new ''stable'' glasses are equivalent to those that common glasses would exhibit after aging over periods lasting thousands of years. The origin of such enhanced stability has been elusive; in the absence of detailed models, past studies have discussed the formation of new polyamorphs or that of nanocrystals to explain the observed behavior. In this work, an atomistic molecular model of trehalose, a disaccharide of glucose, is used to examine the properties of vapor-deposited stable glasses. Consistent with experiment, the model predicts the formation of stable glasses having a higher density, a lower enthalpy, and higher onset temperatures than those of the corresponding ''ordinary'' glass formed by quenching the bulk liquid. Simulations reveal that newly formed layers of the growing vapor-deposited film exhibit greater mobility than the remainder of the material, thereby enabling a reorganization of the film as it is grown. They also reveal that ''stable'' glasses exhibit a distinct layered structure in the direction normal to the substrate that is responsible for their unusual properties.

Singh, Sadanand; Pablo, Juan J. de [Department of Chemical and Biological Engineering, University of Wisconsin, Madison Wisconsin 53706 (United States)

2011-05-21T23:59:59.000Z

314

Chemical deposition methods using supercritical fluid solutions  

DOE Patents (OSTI)

A method for depositing a film of a desired material on a substrate comprises dissolving at least one reagent in a supercritical fluid comprising at least one solvent. Either the reagent is capable of reacting with or is a precursor of a compound capable of reacting with the solvent to form the desired product, or at least one additional reagent is included in the supercritical solution and is capable of reacting with or is a precursor of a compound capable of reacting with the first reagent or with a compound derived from the first reagent to form the desired material. The supercritical solution is expanded to produce a vapor or aerosol and a chemical reaction is induced in the vapor or aerosol so that a film of the desired material resulting from the chemical reaction is deposited on the substrate surface. In an alternate embodiment, the supercritical solution containing at least one reagent is expanded to produce a vapor or aerosol which is then mixed with a gas containing at least one additional reagent. A chemical reaction is induced in the resulting mixture so that a film of the desired material is deposited.

Sievers, Robert E. (Boulder, CO); Hansen, Brian N. (Boulder, CO)

1990-01-01T23:59:59.000Z

315

Radiation dose estimates for radiopharmaceuticals  

SciTech Connect

Tables of radiation dose estimates based on the Cristy-Eckerman adult male phantom are provided for a number of radiopharmaceuticals commonly used in nuclear medicine. Radiation dose estimates are listed for all major source organs, and several other organs of interest. The dose estimates were calculated using the MIRD Technique as implemented in the MIRDOSE3 computer code, developed by the Oak Ridge Institute for Science and Education, Radiation Internal Dose Information Center. In this code, residence times for source organs are used with decay data from the MIRD Radionuclide Data and Decay Schemes to produce estimates of radiation dose to organs of standardized phantoms representing individuals of different ages. The adult male phantom of the Cristy-Eckerman phantom series is different from the MIRD 5, or Reference Man phantom in several aspects, the most important of which is the difference in the masses and absorbed fractions for the active (red) marrow. The absorbed fractions for flow energy photons striking the marrow are also different. Other minor differences exist, but are not likely to significantly affect dose estimates calculated with the two phantoms. Assumptions which support each of the dose estimates appears at the bottom of the table of estimates for a given radiopharmaceutical. In most cases, the model kinetics or organ residence times are explicitly given. The results presented here can easily be extended to include other radiopharmaceuticals or phantoms.

Stabin, M.G.; Stubbs, J.B.; Toohey, R.E. [Oak Ridge Inst. of Science and Education, TN (United States). Radiation Internal Dose Information Center

1996-04-01T23:59:59.000Z

316

Hydrothermal method of synthesis of rare-earth tantalates and niobates  

SciTech Connect

A hydrothermal method of synthesis of a family of rare-earth Group 5 oxides, where the Group 5 oxide is a niobate or tantalate. The rare-earth Group 5 oxides can be doped with suitable emitter ions to form nanophosphors.

Nyman, May D; Rohwer, Lauren E.S.; Martin, James E

2012-10-16T23:59:59.000Z

317

Ge integration on Si via rare earth oxide buffers: From MBE to CVD (Invited Paper)  

Science Conference Proceedings (OSTI)

Single crystalline rare earth oxide heterostructures are flexible buffer systems to achieve the monolithic integration of Ge thin film structures on Si. The development of engineered oxide systems suitable for mass-production compatible CVD processes ... Keywords: Engineered Si wafers, Ge integration, Heteroepitaxy, Rare earth oxides, X-ray diffraction

T. Schroeder; A. Giussani; H. -J. Muessig; G. Weidner; I. Costina; Ch. Wenger; M. Lukosius; P. Storck; P. Zaumseil

2009-07-01T23:59:59.000Z

318

RARE BOOK SCHOOL 114 Alderman Library University of Virginia Charlottesville, Virginia 22904-4103  

E-Print Network (OSTI)

RARE BOOK SCHOOL 114 Alderman Library · University of Virginia · Charlottesville, Virginia 22904-depth study of physical books and manuscripts is scarcely to be found. Rare Book School at the University of Virginia keeps the history of books alive. More than 300 students will take our courses this year

Whittle, Mark

319

Si Nanostructures Embedded into Crystalline Rare Earth Oxide Matrix for Opto and Nano Electronic Devices  

Science Conference Proceedings (OSTI)

We describe a novel approach to grow Si nanostructures embedded into crystalline rare earth oxides using molecular beam epitaxy. By efficiently exploiting the growth kinetics during growth one could create nanostructures exhibiting various dimensions, ... Keywords: Si quantum dot, quantum confinement, nonvolatile memory, optoelectronics, rare earth oxide, molecular beam epitaxy

H. J. Osten; A. Laha; A. Fissel

2010-02-01T23:59:59.000Z

320

Si-nanoclusters embedded into epitaxial rare earth oxides: Potential candidate for nonvolatile memory applications  

Science Conference Proceedings (OSTI)

Using an unconventional approach, single crystalline Si-nanoclusters (Si-NCs) with uniform size and higher density were embedded into epitaxial rare earth oxide with two-dimensional spatial arrangements at a defined distance from the substrate using ... Keywords: Epitaxial rare earth oxide, MBE, Nonvolatile memory, Si-nanocluster

Apurba Laha; E. Bugiel; A. Fissel; H. J. Osten

2008-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

Witnessing spin-orbit thermal entanglement in rare-earth ions  

E-Print Network (OSTI)

We explore spin-orbit thermal entanglement in rare-earth ions, based on a witness obtained from mean energies. The entanglement temperature $T_{E}$, below which entanglement emerges, is found to be thousands of kelvin above room temperature for all light rare earths. This demonstrate the robustness to environmental fluctuations of entanglement between internal degrees of freedom of a single ion.

O. S. Duarte; C. S. Castro; D. O. Soares-Pinto; M. S. Reis

2013-08-07T23:59:59.000Z

322

Formation of amorphous metal alloys by chemical vapor deposition  

SciTech Connect

Amorphous alloys are deposited by a process of thermal dissociation of mixtures or organometallic compounds and metalloid hydrides, e.g., transition metal carbonyl such as nickel carbonyl, and diborane. Various sizes and shapes of deposits can be achieved, including near-net-shape free standing articles, multilayer deposits, and the like. Manipulation or absence of a magnetic field affects the nature and the structure of the deposit.

Mullendore, Arthur W. (Sandia Park, NM)

1990-01-01T23:59:59.000Z

323

Boiler Water Deposition Model for Fossil-Fueled Power Plants  

Science Conference Proceedings (OSTI)

Accumulation of internal deposits can adversely affect the performance and availability of boilers and turbines in fossil steam-water cycles. Deposition in drum boilers has been identified as the area of broadest concern to the industry; therefore, an improved understanding of deposition in drum boilers is expected to represent the greatest source of benefits and value to end users. The overall objective of the modeling described here is to develop a comprehensive, integrated model for deposition process...

2011-12-16T23:59:59.000Z

324

Electrochemical deposition of high purity silicon from molten fluoride ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , Solar Cell Silicon. Presentation Title, Electrochemical deposition of high purity ...

325

Deposition of Graded Thermal Barrier Coatings for Gas Turbine ...  

Wind Energy Industrial Technologies Advanced Materials Deposition of Graded Thermal Barrier Coatings for Gas Turbine Blades Sandia National ...

326

Ion beam assisted deposition of thermal barrier coatings ...  

... Energy Innovation Portal on Google; Bookmark Ion beam assisted deposition of thermal barrier coatings - Energy Innovation Portal on Delicious ...

327

Principal Components Instrumental Variable Estimation  

E-Print Network (OSTI)

. The reason for the inconsistency is that the least squares estimation used for the projection of the first stage tends to fit too well, rendering an overfitted PKX which is still correlated with u if the number of instruments is large. The estimating... -dimensional IVE is just an IVE and as such possesses up to rn?G?2 moments, and thus it may achieve the performance in terms of bias of the ‘no moments’ estimators without displaying their unduly volatility due to fat tails. The fulfilment of condition (A) is key...

Winkelried, Diego; Smith, Richard J.

2011-01-31T23:59:59.000Z

328

Watch a Rare Earth Elements Event Live This Morning | Department of Energy  

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

Watch a Rare Earth Elements Event Live This Morning Watch a Rare Earth Elements Event Live This Morning Watch a Rare Earth Elements Event Live This Morning December 15, 2010 - 9:20am Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs From 9:30am to noon ET today you can tune into a live discussion on "rare earth materials" that are critical to the production of clean energy technologies. Tune in here. The Department of Energy's Assistant Secretary for Policy and International Affairs David Sandalow will give the keynote, speaking to the role of rare earth metals and other materials in the clean energy economy. You can check back to the Energy Blog for more info later today. Ginny Simmons is a New Media Specialist and contractor to the Office of Public Affairs.

329

DOE Announces Second RFI on Rare Earth Metals | Department of Energy  

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

Second RFI on Rare Earth Metals Second RFI on Rare Earth Metals DOE Announces Second RFI on Rare Earth Metals March 22, 2011 - 12:00am Addthis Washington, D.C. - The Department of Energy today released a Request for Information (RFI) soliciting information from the public on rare earth metals and other materials used in the energy sector. Responses to this RFI will inform an update to DOE's Critical Materials Strategy (pdf - 5.7mb ), released December 15, 2010, that assessed the use of rare earth metals and other materials important to the development and deployment of a variety of clean energy technologies, such as wind turbines, hybrid vehicles, solar panels and energy efficient light bulbs. The updated strategy, expected later this year, will include additional analysis of rapidly-changing market conditions. It will analyze the use

330

Watch a Rare Earth Elements Event Live This Morning | Department of Energy  

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

Watch a Rare Earth Elements Event Live This Morning Watch a Rare Earth Elements Event Live This Morning Watch a Rare Earth Elements Event Live This Morning December 15, 2010 - 9:20am Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs From 9:30am to noon ET today you can tune into a live discussion on "rare earth materials" that are critical to the production of clean energy technologies. Tune in here. The Department of Energy's Assistant Secretary for Policy and International Affairs David Sandalow will give the keynote, speaking to the role of rare earth metals and other materials in the clean energy economy. You can check back to the Energy Blog for more info later today. Ginny Simmons is a New Media Specialist and contractor to the Office of Public Affairs.

331

Boiler Water Deposition Model for Fossil-Fueled Power Plants  

Science Conference Proceedings (OSTI)

The feasibility of modeling the various processes governing deposition in fossil boilers was assessed in EPRI report 1004931, Boiler Water Deposition Model: Part 1: Feasibility Study, published in 2004. This report presents findings of follow-up activities directed toward the ultimate goal of developing an aggregate model that is applicable to the important deposition phenomena in fossil drum-type boilers.

2007-03-26T23:59:59.000Z

332

Estimation of Surface Heat Flux  

Science Conference Proceedings (OSTI)

The authors reconsider the problem of estimating the sensible heat transfer at the earth's surface from direct measurements of turbulent fluxes in the atmospheric boundary layer. For simplicity, only horizontally homogeneous conditions are ...

Jielun Sun; Steven K. Esbensen; L. Mahrt

1995-09-01T23:59:59.000Z

333

Estimation of resources and reserves  

E-Print Network (OSTI)

This report analyzes the economics of resource and reserve estimation. Current concern about energy problems has focused attention on how we measure available energy resources. One reads that we have an eight-year oil ...

Massachusetts Institute of Technology. Energy Laboratory.

1982-01-01T23:59:59.000Z

334

Quantum estimation of relative information  

E-Print Network (OSTI)

We derive optimal schemes for preparation and estimation of relational degrees of freedom between two quantum systems. We specifically analyze the case of rotation parameters representing relative angles between elements of the SU(2) symmetry group. Our estimation procedure does not assume prior knowledge of the absolute spatial orientation of the systems and as such does not require information on the underlying classical reference frame in which the states are prepared.

Netanel H. Lindner; Petra F. Scudo; Dagmar Bruss

2005-06-27T23:59:59.000Z

335

PDV Uncertainty Estimation & Methods Comparison  

Science Conference Proceedings (OSTI)

Several methods are presented for estimating the rapidly changing instantaneous frequency of a time varying signal that is contaminated by measurement noise. Useful a posteriori error estimates for several methods are verified numerically through Monte Carlo simulation. However, given the sampling rates of modern digitizers, sub-nanosecond variations in velocity are shown to be reliably measurable in most (but not all) cases. Results support the hypothesis that in many PDV regimes of interest, sub-nanosecond resolution can be achieved.

Machorro, E.

2011-11-01T23:59:59.000Z

336

Estimate product quality with ANNs  

Science Conference Proceedings (OSTI)

Artificial neural networks (ANNs) have been applied to predict catalytic reformer octane number (ON) and gasoline splitter product qualities. Results show that ANNs are a valuable tool to derive fast and accurate product quality measurements, and offer a low-cost alternative to online analyzers or rigorous mathematical models. The paper describes product quality measurements, artificial neural networks, ANN structure, estimating gasoline octane numbers, and estimating naphtha splitter product qualities.

Brambilla, A. [Univ. of Pisa (Italy); Trivella, F. [Adicon Advanced Distillation Control SrL, Pisa (Italy)

1996-09-01T23:59:59.000Z

337

Summary Report Documenting Status of the Rare Earth Oxide Investigation  

Science Conference Proceedings (OSTI)

The goal of this work is to enhance the understanding of ceramic nuclear fuel thermochemistry through a coordinated modeling and experimental approach. This work supports the Advanced Fuels Campaign Feedstock and Fabrication Technology R&D Program and is focused on the following tasks: (1) use existing compound energy formalism-based models to support Los Alamos National Laboratory (LANL) fuel development activities, (2) assess rare earth (RE) oxide systems and begin development of thermochemical representations of U-RE-O systems, and (3) develop a U-Ce-O thermochemical model for the fluorite-structure phase. In support of the experimental efforts at the LANL, an assessment of temperature-oxygen potential conditions for preparing stoichiometric U{sub 1-y}Ce{sub y}O{sub 2} at relatively low values of y (thermochemical information, e.g., oxygen potentials and phase equilibria, can thus yield the necessary corrections to the Gibbs free energies for the non-standard constituents and derived interaction parameters (L values). While a model is available that includes all the interactions separately among the urania and ceria species, determination of any possible non-ideal interactions between the urania and ceria cations requires optimization from first principles (if possible) and experimental data for the system. Utilizing the best set of data for oxygen potential-temperature-composition for U{sub 1-y}Ce{sub y}O{sub 2-x} the FactSage thermochemical computational software code was used to optimize the system for selected Gibbs free energy functions and interaction parameters. While it was possible to obtain optimized solutions, the resulting parameters did not allow adequate reproduction of the data, as can be seen in Fig. 2. As noted above, the quality of the data among the various investigators is poor and that is a likely cause for the lack of a reasonable representation. The focus for the remainder of the fiscal year will be twofold. There will be collaboration with LANL on the collection of experimental data to resolve inconsistencies in the literature data and to fill some of the gaps in the experimental space

Besmann, Theodore M [ORNL; Voit, Stewart L [ORNL; Shin, Dongwon [ORNL

2010-05-01T23:59:59.000Z

338

Time-resolved diagnostics of excimer laser-generated ablation plasmas used for pulsed laser deposition  

SciTech Connect

Characteristics of laser plasmas used for pulsed laser deposition (PLD) of thin films are examined with four in situ diagnostic techniques: Optical emission spectroscopy, optical absorption spectroscopy, ion probe studies, and gated ICCD (intensified charge-coupled-device array) fast photography. These four techniques are complementary and permit simultaneous views of the transport of ions, excited states, ground state neutrals and ions, and hot particulates following KrF laser ablation of YBCO, BN, graphite and Si in vacuum and background gases. The implementation and advantages of the four techniques are first described in order to introduce the key features of laser plasmas for pulsed laser deposition. Aspects of the interaction of the ablation plume with background gases (i.e., thermalization, attenuation, shock formation) and the collision of the plasma plume with the substrate heater are then summarized. The techniques of fast ICCD photography and gated photon counting are then applied to investigate the temperature, velocity, and spatial distribution of hot particles generated during KrF ablation of YBCO, BN, Si and graphite. Finally, key features of fast imaging of the laser ablation of graphite into high pressure rare gases are presented in order to elucidate internal reflected shocks within the plume, redeposition of material on a surface, and formation of hot nanoparticles within the plume.

Geohegan, D.B.

1994-09-01T23:59:59.000Z

339

DOE G 430.1-1 Chp 15, Estimating Methods  

Directives, Delegations, and Requirements

Estimating methods, estimating indirect and direct costs, and other estimating considerations are discussed in this chapter.

1997-03-28T23:59:59.000Z

340

CHLORIDE DEPOSITION FROM STEAM ONTO SUPERHEATER FUEL CLAD MATERIALS  

SciTech Connect

Experimemts using Cl/sup 36/ in a steam test loop were conducted to study the deposition behavior of chlorides on BONUS superheater fuel assembly materials. The moisture content of the steam was varied between 0 and 0.5 wt%, and superheat was added up to 15 deg F before the steam passed over the test cartridge heater. The effects of vaiiables on the chloride deposition on the heater were studied in detail. Chloride deposition from moist steam was found to result in heavy, adherent deposits which are conducive to severe chloride stress corrosion of austenitic steels, while removal of all moisture from the incoming steam reduces the chloride deposition and minimizes the chloride stress corrosion. The heater surface condition was found to be a very important variable; deposition is increased by surface defects and pits. Neither the temperature of steam or heater nor the amount of superheat had an appreciable effect on the deposition, when no moisture existed in the steam. However, low steam velocities and spacer protoberances increase the deposition. Different clad materials (Inconel and Type 304 and 347 stainless steel) with similar surface conditions did not affect the deposition, although subsequent corrosion effects do modify the deposition behavior. Recommendations are given for the control of chloride deposition in nuclear superheater reactor systems. (D.L.C.)

Bevilacqua, F.; Brown, G.M.

1963-10-18T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

A Bayesian Framework for Combining Valuation Estimates  

E-Print Network (OSTI)

Obtaining more accurate equity value estimates is the starting point for stock selection, value-based indexing in a noisy market, and beating benchmark indices through tactical style rotation. Unfortunately, discounted cash flow, method of comparables, and fundamental analysis typically yield discrepant valuation estimates. Moreover, the valuation estimates typically disagree with market price. Can one form a superior valuation estimate by averaging over the individual estimates, including market price? This article suggests a Bayesian framework for combining two or more estimates into a superior valuation estimate. The framework justifies the common practice of averaging over several estimates to arrive at a final point estimate.

Kenton K. Yee

2007-07-24T23:59:59.000Z

342

Density estimation for data with rounding errors  

Science Conference Proceedings (OSTI)

Rounding of data is common in practice. The problem of estimating the underlying density function based on data with rounding errors is addressed. A parametric maximum likelihood estimator and a nonparametric bootstrap kernel density estimator are proposed. ... Keywords: Bootstrapping, Deconvolution density estimation, Fast Fourier transformation, Kernel density estimation, Measurement error

B. Wang, W. Wertelecki

2013-09-01T23:59:59.000Z

343

James-Stein type estimators of variances  

Science Conference Proceedings (OSTI)

In this paper we propose James-Stein type estimators for variances raised to a fixed power by shrinking individual variance estimators towards the arithmetic mean. We derive and estimate the optimal choices of shrinkage parameters under both the squared ... Keywords: 62H12, Inadmissibility, Shrinkage estimation, Shrinkage parameter, Squared loss function, Stein loss function, Variance estimation

Tiejun Tong; Homin Jang; Yuedong Wang

2012-05-01T23:59:59.000Z

344

Dynamics of nucleation in chemical vapor deposition  

Science Conference Proceedings (OSTI)

We study the evolution of layer morphology during the early stages of metal chemical vapor deposition (CVD) onto Si(100) via pyrolysis of Fe(CO){sub 5} below 250{degrees}C. Scanning tunneling microscopy (STM) shows that nuclei formation is limited by precursor dissociation which occurs on terraces, not at step sites. Also, the average size of clusters formed during CVD is larger than for Fe growth by evaporation (a random deposition process). Based on STM data and Monte Carlo simulations, we conclude that the CVD-growth morphology is affected by preferential dissociation of Fe(CO){sub 5} molecules at existing Fe clusters -- an autocatalytic effect. We demonstrate that nucleation kinetics can be used to control formation of metal nanostructures on chemically tailored surfaces. Reactive sites on Si (001) are first passivated by hydrogen. H atoms are locally removed by electron stimulated desorption using electrons emitted from the STM tip. Subsequent pyrolysis of Fe(CO){sub 5} leads to selective nucleation and growth of Fe films in the areas where H has been removed.

Mayer, T.M.; Adams, D.P.; Swartzentruber, B.S.; Chason, E.

1995-11-01T23:59:59.000Z

345

APPARATUS FOR VACUUM DEPOSITION OF METALS  

DOE Patents (OSTI)

An apparatus and a method are described for continuous vacuum deposition of metals for metallic coatings, for ultra-high vacuum work, for purification of metals, for maintaining high-density electron currents, and for other uses. The apparatus comprises an externally cooled feeder tube extending into a container and adapted to feed metal wire or strip so that it emerges in a generally vertical position therein. The tube also provides shielding from the heat produced by an electron beam therein focused to impinge from a vertical direction upon the tip of the emerging wire. By proper control of the wire feed, coolant feed, and electron beam intensity, a molten ball of metal forms upon the emerging tip and remains self-supported thereon by the interaction of various forces. The metal is vaporized and travels in a line of sight direction, while additional wire is fed from the tube, so that the size of the molten ball remains constant. In the preferred embodiments, the wire is selected from a number of gettering metals and is degassed by electrical resistance in an adjacent chamber which is also partially evacuated. The wire is then fed through the feed tube into the electron beam and vaporizes and adsorbs gases to provide pumping action while being continuously deposited upon surfaces within the chamber. Ion pump electrodes may also be provided within line of sight of the vaporizing metal source to enhance the pumping action. (AEC)

Milleron, N.

1962-03-13T23:59:59.000Z

346

Estimated Cost Description Determination Date:  

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

and posted 2/10/2011 and posted 2/10/2011 *Title, Location Estimated Cost Description Determination Date: uncertain Transmittal to State: uncertain EA Approval: uncertain $50,000 FONSI: uncertain Determination Date: uncertain Transmittal to State: uncertain EA Approval: uncertain FONSI: uncertain Total Estimated Cost $70,000 Attachment: Memo, Moody to Marcinowski, III, SUBJECT: NEPA 2011 APS for DOE-SRS, Dated: Annual NEPA Planning Summary Environmental Assessments (EAs) Expected to be Initiated in the Next 12 Months Department of Energy (DOE) Savannah River Site (SRS) Jan-11 Estimated Schedule (**NEPA Milestones) South Carolina Department of Health and Environmental Control (SCDHEC) issued a National Pollutant Discharge Elimination System (NPDES) Industrial Stormwater General Permit (IGP) # SCR000000 November 12, with an effective date of January

347

Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future  

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

Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future

348

Microsoft Word - ARPA-E_RareEarth_Workshop_Overview_v6  

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

ARPA-E WORKSHOP ARPA-E WORKSHOP Rare Earth and Critical Materials December 6, 2010 in Arlington, VA Background ...................................................................................................................................................................................... 2 Breakout Sessions and Participant Preparation .............................................................................................................. 8 Agenda ................................................................................................................................................................................................ 9 Contact Information ................................................................................................................................................................... 10

349

Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials  

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

Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future December 3, 2010 Session A: Setting the Scene - Critical Materials for a Clean Energy Future Diana Bauer, Office of Policy and International Affairs, U.S. Department of Energy, Highlights of the DOE Critical Materials Strategy Antje Wittenberg, Directorate General for Enterprise and Industry, The EU Raw Materials Initiative and the Report of the Ad-hoc Group (tbc) Tom Lograsso, Ames Laboratory (Iowa State University), Future Directions in Rare Earth Research: Critical Materials for 21st Century Industry Derk Bol, Materials Innovation Institute M2i (Netherlands) M2i, Material

350

Engineering broadband and anisotropic photoluminescence emission from rare earth doped tellurite thin film photonic crystals  

E-Print Network (OSTI)

Broadband and anisotropic light emission from rare-earth doped tellurite thin films is demonstrated using Er[superscript 3+]-TeO[subscript 2] photonic crystals (PhCs). By adjusting the PhC parameters, photoluminescent light ...

Vanhoutte, Michiel

351

Rapid separation of individual rare-earth elements from fission products  

SciTech Connect

A microprocessor-controlled radiochemical separation system has been developed to rapidly separate rare-earth elements from gross fission products. The system is composed of two high performance liquid chromatography columns coupled in series by a stream-splitting injection valve. The first column separates the rare-earth group by extraction chromatography using dihexyldiethylcarbamylmethylenephosphonate (DHDECMP) adsorbed on Vydac C/sub 8/ resin. The second column isolates the individual rare-earth elements by cation exchange using Aminex A-9 resin with ..cap alpha..-hydroxyisobutyric acid (..cap alpha..-HIBA) as the eluent. With this system, fission-product rare-earth isotopes with half-lives as short as three minutes have been studied.

Baker, J.D.; Gehrke, R.J.; Greenwood, R.C.; Meikrantz, D.H.

1980-01-01T23:59:59.000Z

352

BLE: Battery Life Estimator | Argonne National Laboratory  

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

Life Estimator (BLE) software is a state-of-the-art tool kit for fitting battery aging data and for battery life estimation. It was designed to make life-cycle estimates...

353

Summary Report Documenting Status of the Rare Earth Oxide Investigation  

SciTech Connect

The goal of this work is to enhance the understanding of ceramic nuclear fuel thermochemistry through a coordinated modeling and experimental approach. This work supports the Advanced Fuels Campaign Feedstock and Fabrication Technology R&D Program and is focused on the following tasks: (1) use existing compound energy formalism-based models to support Los Alamos National Laboratory (LANL) fuel development activities, (2) assess rare earth (RE) oxide systems and begin development of thermochemical representations of U-RE-O systems, and (3) develop a U-Ce-O thermochemical model for the fluorite-structure phase. In support of the experimental efforts at the LANL, an assessment of temperature-oxygen potential conditions for preparing stoichiometric U{sub 1-y}Ce{sub y}O{sub 2} at relatively low values of y (< 0.4) was performed. There is significant agreement in the literature that both the independent urania and ceria phases, and the urania-ceria solution phase are stoichiometric at oxygen-to-metal (O/M) ratios of 2 at 850 C and an oxygen potential of -368 kJ/mol. The oxygen potential value is obtained at a partial pressure of CO/CO{sub 2} ratio of unity at 1 bar total pressure. This information was successfully applied in thermogravimetric analysis experimental efforts at LANL investigating urania, ceria, and blended powders of the two oxides. Data reported in the literature for oxygen potential-temperature-composition for U{sub 1-y}Ce{sub y}O{sub 2-x} was extracted manually and used to generate a data file. Assessment of the data showed both wide error ranges within sets of data as well as inconsistencies between data sets of different investigators. Figure 1, a plot of the extracted data, illustrates the paucity of experimental data with respect to composition, temperature, and O:M space. For example, as shown in Figure 1, the data as a function of temperature are limited to the range 873 K to 1273 K and higher O:M ratios. Furthermore, the compositions studied have focused on higher uranium fractions and very little work has been done at corresponding lower O:M ratios. A compound energy formalism representation has been developed for the (U,Ce)O{sub 2+x} utilizing developed models for the UO{sub 2+x} from Gueneau et al. (2002) and CeO{sub 2-x} of Zinkevich et al. (2006). A three sublattice approach was used to allow for uranium of valences up to +6. Vacancies are considered only on the anion sites. The ionic species are introduced in the sublattice as follows: (U{sup 6+},U{sup 4+},U{sup 3+},Ce{sup 4+},Ce{sup 3+}){sub 1}(O{sup 2-},Va){sub 2}(O{sup 2-},Va){sub 1} Gibbs free energy expressions for each of the derived constituents can be determined from standard state values. Optimizations using all available thermochemical information, e.g., oxygen potentials and phase equilibria, can thus yield the necessary corrections to the Gibbs free energies for the non-standard constituents and derived interaction parameters (L values). While a model is available that includes all the interactions separately among the urania and ceria species, determination of any possible non-ideal interactions between the urania and ceria cations requires optimization from first principles (if possible) and experimental data for the system. Utilizing the best set of data for oxygen potential-temperature-composition for U{sub 1-y}Ce{sub y}O{sub 2-x} the FactSage thermochemical computational software code was used to optimize the system for selected Gibbs free energy functions and interaction parameters. While it was possible to obtain optimized solutions, the resulting parameters did not allow adequate reproduction of the data, as can be seen in Fig. 2. As noted above, the quality of the data among the various investigators is poor and that is a likely cause for the lack of a reasonable representation. The focus for the remainder of the fiscal year will be twofold. There will be collaboration with LANL on the collection of experimental data to resolve inconsistencies in the literature data and to fill some of the gaps in the experimental space

Besmann, Theodore M [ORNL; Voit, Stewart L [ORNL; Shin, Dongwon [ORNL

2010-05-01T23:59:59.000Z

354

Rare Earth Oxide Fluoride Nanoparticles And Hydrothermal Method For Forming Nanoparticles  

DOE Patents (OSTI)

A hydrothermal method for forming nanoparticles of a rare earth element, oxygen and fluorine has been discovered. Nanoparticles comprising a rare earth element, oxygen and fluorine are also described. These nanoparticles can exhibit excellent refractory properties as well as remarkable stability in hydrothermal conditions. The nanoparticles can exhibit excellent properties for numerous applications including fiber reinforcement of ceramic composites, catalyst supports, and corrosion resistant coatings for high-temperature aqueous solutions.

Fulton, John L. (Richland, WA); Hoffmann, Markus M. (Richland, WA)

2003-12-23T23:59:59.000Z

355

Trace element and REE composition of five samples of the Yucca Mountain calcite-silica deposits. Special report No. 8  

SciTech Connect

The attached materials document the results of part of a recent effort of geochemical sampling and analysis at Yucca Mountain and nearby regions. The efforts come as a result of interest in comprehensive analyses of rare earth elements (REE), lanthanum (La) through lutecium (Lu). Several additional, non-REE analyses were obtained as well. Commercially available REE analyses have proved to be insufficiently sensitive for geochemical purposes. Dr. Roman Schmitt at the Radiation Center at Oregon State University in Corvallis was sent five samples as a trial effort. The results are very encouraging. The purpose of compiling Dr. Schmitt`s report and the other materials is to inform the sponsor of his independent observations of these results and other information that sent to him. To provide a more complete appreciation of the utility of REE analyses a copy of Dave Vaniman`s recent article is included in which he notes that REE analyses from Yucca Mountain indicate the occurrence of two distinctly different REE patterns as do several other chemical parameters of the calcite-silica deposits. Our four samples with high equivalent CaCO{sub 3} were collected from sites we believe to be spring deposits. One sample, 24D, is from southern Crater Flat which is acknowledged by U.S.G.S. investigators to be a spring deposit. All four of these samples have REE patterns similar to those from the saturated zone reported by Vaniman.

Livingston, D.

1993-07-01T23:59:59.000Z

356

Practical Estimates of Lake Evaporation  

Science Conference Proceedings (OSTI)

Practical estimates of lake evaporation must rely on data that can be observed in the land environment. This requires the ability to take into account the changes in the temperature and humidity that occur when the air passes from the land to the ...

F. I. Morton

1986-03-01T23:59:59.000Z

357

An Improved Cluster Richness Estimator  

Science Conference Proceedings (OSTI)

Minimizing the scatter between cluster mass and accessible observables is an important goal for cluster cosmology. In this work, we introduce a new matched filter richness estimator, and test its performance using the maxBCG cluster catalog. Our new estimator significantly reduces the variance in the L{sub X}-richness relation, from {sigma}{sub lnL{sub X}}{sup 2} = (0.86 {+-} 0.02){sup 2} to {sigma}{sub lnL{sub X}}{sup 2} = (0.69 {+-} 0.02){sup 2}. Relative to the maxBCG richness estimate, it also removes the strong redshift dependence of the richness scaling relations, and is significantly more robust to photometric and redshift errors. These improvements are largely due to our more sophisticated treatment of galaxy color data. We also demonstrate the scatter in the L{sub X}-richness relation depends on the aperture used to estimate cluster richness, and introduce a novel approach for optimizing said aperture which can be easily generalized to other mass tracers.

Rozo, Eduardo; /Ohio State U.; Rykoff, Eli S.; /UC, Santa Barbara; Koester, Benjamin P.; /Chicago U. /KICP, Chicago; McKay, Timothy; /Michigan U.; Hao, Jiangang; /Michigan U.; Evrard, August; /Michigan U.; Wechsler, Risa H.; /SLAC; Hansen, Sarah; /Chicago U. /KICP, Chicago; Sheldon, Erin; /New York U.; Johnston, David; /Houston U.; Becker, Matthew R.; /Chicago U. /KICP, Chicago; Annis, James T.; /Fermilab; Bleem, Lindsey; /Chicago U.; Scranton, Ryan; /Pittsburgh U.

2009-08-03T23:59:59.000Z

358

Periodicity estimation of Dynamic Textures  

Science Conference Proceedings (OSTI)

Dynamic Textures (DTs) are image sequences of natural events like fire, smoke, water etc., that possesses regular motion patterns. Periodicity is a widely used tool to analyse regular structures of periodic one dimensional signals as well as two dimensional ... Keywords: co-occurrence matrix, dynamic textures, image sequences, image texture analysis, motion patterns, natural events, periodicity estimation, temporal textures

Khalid Zaman Bijon; Ahmed Hasan; Ashfaqur Rahman; Manzur Murshed

2008-03-01T23:59:59.000Z

359

Unsupervised clustering and centroid estimation using dynamic ...  

Science Conference Proceedings (OSTI)

solving cluster detection and centroid estimation prob- lems. ... density function and these vectors estimate the cen- ..... an algorithm to minimize a cost function.

360

Estimating Waste Inventory and Waste Tank Characterization |...  

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

Estimating Waste Inventory and Waste Tank Characterization Estimating Waste Inventory and Waste Tank Characterization Summary Notes from 28 May 2008 Generic Technical Issue...

Note: This page contains sample records for the topic "deposits estimated rare" 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

Effects of deposition conditions on the properties of pyrolytic carbon deposited in a fluidized bed  

Science Conference Proceedings (OSTI)

The high-density, isotropic pyrolytic carbon layer beneath the silicon carbide (IPyC) plays a key role in the irradiation performance of coated particle fuel. The IPyC layer protects the kernel from reactions with chlorine during deposition of the SiC layer, provides structural support for the SiC layer, and protects the SiC from fission products and carbon monoxide. The process conditions used by the Germans to deposit the IPyC coating produced a highly isotropic, but somewhat permeable IPyC coating. The permeability of the IPyC coating was acceptable for use with the dense German UO{sub 2} kernels, but may not be suitable when coating UCO kernels. The UCO kernels are typically more porous and thus have a larger surface area than UO{sub 2} kernels. The lower density and the higher surface area of UCO kernels could make them more susceptible to attack by HCl gas during the silicon carbide (SiC) coating process, which could result in heavy metal dispersion into the buffer and IPyC coatings and a higher level of as-manufactured SiC defects. The relationship between IPyC deposition conditions, permeability, and anisotropy must be understood and the appropriate combination of anisotropy and permeability for particle fuel containing UCO kernels selected. A reference set of processing conditions have been determined from review of historical information and results of earlier coating experiments employing 350 and 500 {micro}m UO{sub 2} kernels. It was decided that a limited study would be conducted, in which only coating gas fraction (CGF) and temperature would be varied. Coatings would be deposited at different rates and with a range of microstructures. Thickness, density, porosity and anisotropy would be measured and permeability evaluated using a chlorine leach test. The results would be used to select the best IPyC coating conditions for use with the available natural enrichment uranium carbide/uranium oxide (NUCO) kernels. The response plots from the investigation of the deposition of pyrolytic carbon in a fluidized bed graphically depict the relationships between processing parameters and coating properties. The additional figures present optical, scanning electron microscopy, and other images to highlight microstructural details. For the study, only two parameters (factors), coating gas fraction and deposition temperature, were varied. The plots reveal obvious trends and links between factors and responses. The dominant relationships determined by this study for this range of coating conditions are: (1) rate is dependent upon coating gas fraction or in other terms, reactant concentration; (2) density is controlled by deposition temperature; (3) efficiency is influenced by both CGF and temperature; (4) anisotropy is affect by CGF and temperature, however, the relationship is more complex than for other properties; (5) permeability is dependent upon deposition temperature (thus density); and (6) open porosity is affect by CGF thus is influenced by coating rate. The response plots can be used as 'maps' for the deposition process and are thus valuable for selecting coating conditions necessary to produce desired combinations of properties. The information is useful in predicting the effects of changes to processing on properties and is beneficial in optimizing the process and product properties. Although the study was limited to only two parameters, the information provides a foundation from which other aspects of the coating process can be more easily investigated.

Lowden, Richard Andrew [ORNL; Hunn, John D [ORNL; Nunn, Stephen D [ORNL; Kercher, Andrew K [ORNL; Price, Jeffery R [ORNL; Jellison Jr, Gerald Earle [ORNL

2005-09-01T23:59:59.000Z

362

Jackpile-Paguate deposit: a review  

Science Conference Proceedings (OSTI)

Uranium mineralization occurs in the Jackpile sandstone, the uppermost unit in the Brushy Basin Member of the Morrison Formation (Jurassic), north of Laguna, New Mexico. Mineralization ranges from discontinuous, spotty disseminations to lenses up to 30 ft (10 m) thick and 100 ft (30 m) long. The lenses are elongate subparallel to the northeast trend of the Jackpile sandstone. Since 1952, observations during mining have indicated that varied forms of mineralization occur within lenses, such as rodlike features, irregular and diffused masses, and discontinuous seams or wisps crosscutting channel boundaries. The positive correlation between uranium content and organic carbon for samples greater than 0.04 percent U/sub 3/O/sub 8/ suggests that organic carbonaceous material is a major large-scale controlling factor for the deposition of uranium. No other significant geochemical control on mineralization can be postulated from the limited data presented.

Beck, R.G.; Cherrywell, C.H.; Earnest, D.F.; Feirn, W.C.

1980-01-01T23:59:59.000Z

363

Atomic Layer Deposition for SRF Cavities  

SciTech Connect

We have begun using Atomic Layer Deposition (ALD) to synthesize a variety of surface coatings on coupons and cavities as part of an effort to produce rf structures with significantly better performance and yield than those obtained from bulk niobium, The ALD process offers the possibility of conformally coating complex cavity shapes with precise layered structures with tightly constrained morphology and chemical properties. Our program looks both at the metallurgy and superconducting properties of these coatings, and also their performance in working structures. Initial results include: 1) evidence from point contact tunneling showing magnetic oxides can be a significant limitation to high gradient operation, 2) experimental results showing the production sharp niobium/oxide interfaces from a high temperature bake of ALD coated Al2O3 on niobium surfaces, 3) results from ALD coated structures.

Norem, J; Pellin, M J; Antoine, C Z; Ciovati, G; Kneisel, P; Reece, C E; Rimmer, R A; Cooley, L; Gurevich, A V; Ha, Y; Proslier, Th

2009-05-01T23:59:59.000Z

364

GAO Cost Estimating and Assessment Guide Twelve Steps of a High-Quality Cost Estimating Process  

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

GAO Cost Estimating and Assessment Guide GAO Cost Estimating and Assessment Guide Twelve Steps of a High-Quality Cost Estimating Process Step Description Associated task 1 Define estimate's purpose Determine estimate's purpose, required level of detail, and overall scope; Determine who will receive the estimate 2 Develop estimating plan Determine the cost estimating team and develop its master schedule; Determine who will do the independent cost estimate; Outline the cost estimating approach; Develop the estimate timeline 3 Define program characteristics In a technical baseline description document, identify the program's

365

Boiler Water Deposition Model for Fossil-Fueled Power Plants  

Science Conference Proceedings (OSTI)

Since the beginning of the commercial steam and power generation industry, deposits on heat transfer surfaces of the steam-water cycle equipment in fossil plant units have been a challenge. Deposits form at nearly all locations within the steam-water cycle, particularly in boiler tubes where failures can have substantial negative impacts on unit availability and reliability. Accumulation of internal deposits can adversely affect the performance and availability of boilers and turbines in fossil steam-wat...

2012-01-23T23:59:59.000Z

366

Modeling PWR Fuel Corrosion Product Deposition and Growth Processes  

Science Conference Proceedings (OSTI)

Development of axial offset anomaly (AOA) in pressurized water reactors (PWRs) drove industry to conduct crud scrape campaigns at a number of units to characterize and better understand the material being deposited on the fuel clad surface. This report describes the first phase of a program to develop models that describe the crud deposition and growth process, including the many phenomena that influence not only the deposit mass, but the composition. The models will be benchmarked against published crud...

2004-12-09T23:59:59.000Z

367

Boiler Water Deposition Model, Part 1: Feasibility Study  

Science Conference Proceedings (OSTI)

Many sources of availability and performance losses in fossil units involve deposition on water- and steam-touched surfaces, with the most acute effects occurring in boilers and turbines. Earlier deposition state-of-knowledge assessments sponsored by EPRI established three broad classifications of deposition phenomena (EPRI reports 1004194 and 1004930). However, within these classifications are many processes and influencing factors that need to be considered in order to make meaningful improvements in d...

2004-11-17T23:59:59.000Z

368

Figure 1.6 State-Level Energy Consumption Estimates and Estimated ...  

U.S. Energy Information Administration (EIA)

Figure 1.6 State-Level Energy Consumption Estimates and Estimated Consumption per Capita, 2010 Consumption Consumption per Capita

369

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 ...

370

Anisotropic Finite Element Modeling of the Fused Deposition ...  

Science Conference Proceedings (OSTI)

Differential Characterization of Ikperejere Iron shale and Iron Sandstone Deposit · Direct Precipitation of Sr-doped LaP3O9 Thin Film Electrolytes for ...

371

Study of Electroless-Deposited Nano-Silver on Medical ...  

Science Conference Proceedings (OSTI)

In this study, the sodium hypophosphite, dextrose and potassium sodium tartrate were selected as reducers for electroless-deposited nano-silver. The influences ...

372

Concept for lightweight spaced-based deposition technology  

E-Print Network (OSTI)

based deposition technology for solar power and astronomicalmirrors and space solar power reflectors. In addition, thelow voltage bus of a solar panel power system of a satellite

Fulton, Michael; Anders, Andre

2006-01-01T23:59:59.000Z

373

Geochemistry of the Yutangba Se deposit in western Hubei, China  

Science Conference Proceedings (OSTI)

In the Se ores and abandoned stone coal pile at the Yutangba Se deposit there ... of Se minerals due to secondary enrichment of selenium in the stone coal ...

374

Laser-deposited Calcium Phosphate Based Bio-ceramic Coatings ...  

Science Conference Proceedings (OSTI)

Presentation Title, Laser-deposited Calcium Phosphate Based Bio-ceramic Coatings on ... of Nano Calcium Phosphates Doped with Fluoride and Titanium Ions.

375

Degradation of Thermal Barrier Coatings from Deposits and Its...  

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

Degradation of Thermal Barrier Coatings from Deposits and Its Mitigation-The Ohio State University Background When coal derived synthesis gas (syngas) is used in place of natural...

376

USE OF ATOMIC LAYER DEPOSITION OF FUNCTIONALIZATION OF NANOPOROUS BIOMATERIALS  

Science Conference Proceedings (OSTI)

Due to its chemical stability, uniform pore size, and high pore density, nanoporous alumina is being investigated for use in biosensing, drug delivery, hemodialysis, and other medical applications. In recent work, we have examined the use of atomic layer deposition for coating the surfaces of nanoporous alumina membranes. Zinc oxide coatings were deposited on nanoporous alumina membranes using atomic layer deposition. The zinc oxide-coated nanoporous alumina membranes demonstrated antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria. These results suggest that atomic layer deposition is an attractive technique for modifying the surfaces of nanoporous alumina membranes and other nanostructured biomaterials.

Brigmon, R.; Narayan, R.; Adiga, S.; Pellin, M.; Curtiss, L.; Stafslien, S.; Chisholm, B.; Monteiro-Riviere, N.; Elam, J.

2010-02-08T23:59:59.000Z

377

Hot Wire Chemical Vapor Deposition with Carbide Filaments ...  

Many of the current industry cells in production have come through NREL, ... One deposition technology utilized at NREL deals with hot wire chemical ...

378

Application of Vacuum Deposition Methods to Solid Oxide Fuel Cells  

Science Conference Proceedings (OSTI)

The application of vacuum deposition techniques to the fabrication of solid oxide fuel cell materials and structures are reviewed, focusing on magnetron sputtering, vacuum plasma methods, laser ablation, and electrochemical vapor deposition. A description of each method and examples of use to produce electrolyte, electrode, and/or electrical interconnects are given. Generally high equipment costs and relatively low deposition rates have limited the use of vacuum deposition methods in solid oxide fuel cell manufacture, with a few notable exceptions. Vacuum methods are particularly promising in the fabrication of micro fuel cells, where thin films of high quality and unusual configuration are desired.

Pederson, Larry R.; Singh, Prabhakar; Zhou, Xiao Dong

2006-07-01T23:59:59.000Z

379

Heteroepitaxial Si Thin Films Deposited on Flexible Copper ...  

Science Conference Proceedings (OSTI)

Presentation Title, Heteroepitaxial Si Thin Films Deposited on Flexible Copper Substrates for Solar Photovoltaics. Author(s), Daniela Florentina Bogorin, Lee ...

380

Dense Deposition of Nanocomposites by a Compact YAG Laser  

Science Conference Proceedings (OSTI)

Feb 1, 2002 ... Dense Deposition of Nanocomposites by a Compact YAG Laser by M. Senna and K. Hamada. Publisher: TMS. Product Format: PDF. Pages ...

Note: This page contains sample records for the topic "deposits estimated rare" 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

Formation and Quantification of Corrosion Deposits in the Power Industry.  

E-Print Network (OSTI)

??The presence of deposits on the secondary side of pressurized water reactor (PWR) steam generator systems is one of the main contributors to the high… (more)

Namduri, Haritha

2007-01-01T23:59:59.000Z

382

Plasma implantation and deposition for advanced materials surface modification.  

E-Print Network (OSTI)

??The research work described in this thesis focuses on the physics of plasma implantation and deposition as well as the application of the technology to… (more)

Fu, King Yu (???)

2005-01-01T23:59:59.000Z

383

Characteristics of Polymer Films Deposited via Microwave Plasma ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Thin films were deposited on both Al and glass substrates at RT by MPECVD using benzene as precursor. Surface and physical properties of ...

384

REMOVAL AND RECOVERY OF DEPOSITS FROM COAL GASIFICATION ...  

A method is provided for on-line removal and recovery of deposits from fossil fuel gasification systems to improve plant performance and recover a valuable metalloid.

385

Liquid Metal Heat Exchanger for Geologic Deposits - Energy ...  

Researchers at ORNL developed a down-well heating apparatus that efficiently heats subterranean geological deposits, such as oil shale, to extract ...

386

Chemical vapor deposition of amorphous semiconductor films. Final subcontract report  

DOE Green Energy (OSTI)

Chemical vapor deposition (CVD) from higher order silanes has been studied for fabricating amorphous hydrogenated silicon thin-film solar cells. Intrinsic and doped a-Si:H films were deposited in a reduced-pressure, tubular-flow reactor, using disilane feed-gas. Conditions for depositing intrinsic films at growth rates up to 10 A/s were identified. Electrical and optical properties, including dark conductivity, photoconductivity, activation energy, optical absorption, band-gap and sub-band-gap absorption properties of CVD intrinsic material were characterized. Parameter space for depositing intrinsic and doped films, suitable for device analysis, was identified.

Rocheleau, R.E.

1984-12-01T23:59:59.000Z

387

Aerosol Jet® Material Deposition for High Resolution Printed ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Aerosol Jet printing, is finding wide use in a number of ... The Aerosol Jet systems deposit a wide variety of functional materials onto a wide ...

388

Bayesian estimation in homodyne interferometry  

E-Print Network (OSTI)

We address phase-shift estimation by means of squeezed vacuum probe and homodyne detection. We analyze Bayesian estimator, which is known to asymptotically saturate the classical Cramer-Rao bound to the variance, and discuss convergence looking at the a posteriori distribution as the number of measurements increases. We also suggest two feasible adaptive methods, acting on the squeezing parameter and/or the homodyne local oscillator phase, which allow to optimize homodyne detection and approach the ultimate bound to precision imposed by the quantum Cramer-Rao theorem. The performances of our two-step methods are investigated by means of Monte Carlo simulated experiments with a small number of homodyne data, thus giving a quantitative meaning to the notion of asymptotic optimality.

Stefano Olivares; Matteo G. A. Paris

2009-01-16T23:59:59.000Z

389

Minimization of Pressurized Water Reactor Radiation Fields through Fuel Deposit Engineering: Deposit Property Evaluation and Optimization  

Science Conference Proceedings (OSTI)

The purpose of this report is to provide an initial assessment of the options for modification of pressurized water reactor (PWR) primary side corrosion product deposits (crud) to minimize the incorporation of activated crud into out-of-core surfaces, thus reducing the intensity of out-of-core radiation fields. This report summarizes the current knowledge of PWR fuel crud characteristics, including crystallographic structure (crystal habits), and buildup mechanisms. The report also reviews the ...

2013-11-11T23:59:59.000Z

390

The effect of roughness on aerosol deposition in tubes  

E-Print Network (OSTI)

Experimental measurements of simulated roughness within tubes and the subsequent aerosol penetration performance through these tubes were conducted for a aerosol particle size range of 5 nm to 20 nm and a flow rate range of 28 L/min to 169.9 L/min. The relative roughness for each of the tubes tested are as follows: clean aluminum pipe and clean copper tube, F,/D = 10-4; fine sandpaper pipe, F,/D = 0.017-12 helical ridges per linear centimeter copper tube, F,/D = 0.046; coarse sandpaper pipe, F,/D = 0.065. Non-dimensional quantities were used to produce an empirical model relating roughness to aerosol penetration. The dependent variable, aerosol penetration, was encompassed in the non-dimensional deposition velocity (v,) and modeled as a function of the dependent variables, non-dimensional particle relaxation time (,c,) and relative roughness (&/D). In addition, a method was developed for estimating when to remove the sampling transport lines for cleaning due to the roughness within the transport line. The empirical correlation fits the data over the range of 0. I 6 to 112 L/min. For these conditions, the model deviated from the experimental data by less than 10% with one outlier which deviated by 20% for the coarse sandpaper pipe at a flow rate of 1 12 L/min. The correlation was used to show that the transport lines should be removed for cleaning or replacement once the pressure drop has exceeded 7.5 mm Hg. The experimental data has shown that the aerosol penetration decreases below 85% for an internal roughness comparable to this pressure drop limit. The correlation for aerosol penetration in transport lines with internal roughness presented should be a beneficial engineering tool for predicting the aerosol losses in sampling systems where roughness is a concern. The correlation should be a useful sub-model for aerosol penetration prediction computational tools as well.

Chavez, Mario Cesar

1997-01-01T23:59:59.000Z

391

Measurement campaigns for holdup estimation  

SciTech Connect

The derivation of technically defensible holdup estimates is described. Considerations important in the planning of measurement campaigns to provide necessary data are reviewed and the role of statistical sampling is discussed. By design, the presentation is nonmathematical and intended for a general audience. Though clearly important, use of sampling principles in the planning of holdup-related activities is sometimes viewed with apprehension. Holdup is often poorly understood to begin with, and the incorporation of the esoteric matters only adds to an image problem. Unfortunately, there are no painless options. In many operating facilities, surface areas on which holdup has accumulated amount to many square miles. It is not practical to pursue 100% measurement of all such surface areas. Thus, some portion is measured - constituting a ''sample,'' whether obtained by a formal procedure or not. Understanding the principles behind sampling is important in planning and in developing legitimate holdup estimates. Although derivation of legitimate, facility-wide holdup estimates is not currently mandated by Department of Energy regulatory requirements, the related activities would greatly advance the present state of knowledge.

Picard, R.R. (Los Alamos National Lab., Los Alamos, NM (US))

1988-07-01T23:59:59.000Z

392

Probabilistic accident consequence uncertainty analysis: Dispersion and deposition uncertainty assessment, main report  

SciTech Connect

The development of two new probabilistic accident consequence codes, MACCS and COSYMA, was completed in 1990. These codes estimate the risks presented by nuclear installations based on postulated frequencies and magnitudes of potential accidents. In 1991, the US Nuclear Regulatory Commission (NRC) and the Commission of the European Communities (CEC) began a joint uncertainty analysis of the two codes. The ultimate objective of the joint effort was to develop credible and traceable uncertainty distributions for the input variables of the codes. Expert elicitation was identified as the best technology available for developing a library of uncertainty distributions for the selected consequence parameters. The study was formulated jointly and was limited to the current code models and to physical quantities that could be measured in experiments. Experts developed their distributions independently. To validate the distributions generated for the wet deposition input variables, samples were taken from these distributions and propagated through the wet deposition code model. Resulting distributions closely replicated the aggregated elicited wet deposition distributions. To validate the distributions generated for the dispersion code input variables, samples from the distributions and propagated through the Gaussian plume model (GPM) implemented in the MACCS and COSYMA codes. Project teams from the NRC and CEC cooperated successfully to develop and implement a unified process for the elaboration of uncertainty distributions on consequence code input parameters. Formal expert judgment elicitation proved valuable for synthesizing the best available information. Distributions on measurable atmospheric dispersion and deposition parameters were successfully elicited from experts involved in the many phenomenological areas of consequence analysis. This volume is the first of a three-volume document describing the project.

Harper, F.T.; Young, M.L.; Miller, L.A. [Sandia National Labs., Albuquerque, NM (United States); Hora, S.C. [Univ. of Hawaii, Hilo, HI (United States); Lui, C.H. [Nuclear Regulatory Commission, Washington, DC (United States); Goossens, L.H.J.; Cooke, R.M. [Delft Univ. of Technology (Netherlands); Paesler-Sauer, J. [Research Center, Karlsruhe (Germany); Helton, J.C. [and others

1995-01-01T23:59:59.000Z

393

Molybdenum enhanced low-temperature deposition of crystalline silicon nitride  

DOE Patents (OSTI)

A process for chemical vapor deposition of crystalline silicon nitride which comprises the steps of: introducing a mixture of a silicon source, a molybdenum source, a nitrogen source, and a hydrogen source into a vessel containing a suitable substrate; and thermally decomposing the mixture to deposit onto the substrate a coating comprising crystalline silicon nitride containing a dispersion of molybdenum silicide.

Lowden, Richard A. (Powell, TN)

1994-01-01T23:59:59.000Z

394

Sputter deposition for multi-component thin films  

DOE Patents (OSTI)

Ion beam sputter-induced deposition using a single ion beam and a multicomponent target is capable of reproducibly producing thin films of arbitrary composition, including those which are close to stoichiometry. Using a quartz crystal deposition monitor and a computer controlled, well-focused ion beam, this sputter-deposition approach is capable of producing metal oxide superconductors and semiconductors of the superlattice type such as GaAs-AlGaAs as well as layered metal/oxide/semiconductor/superconductor structures. By programming the dwell time for each target according to the known sputtering yield and desired layer thickness for each material, it is possible to deposit composite films from a well-controlled sub-monolayer up to thicknesses determined only by the available deposition time. In one embodiment, an ion beam is sequentially directed via a set of X-Y electrostatic deflection plates onto three or more different element or compound targets which are constituents of the desired film. In another embodiment, the ion beam is directed through an aperture in the deposition plate and is displaced under computer control to provide a high degree of control over the deposited layer. In yet another embodiment, a single fixed ion beam is directed onto a plurality of sputter targets in a sequential manner where the targets are each moved in alignment with the beam under computer control in forming a multilayer thin film. This controlled sputter-deposition approach may also be used with laser and electron beams.

Krauss, Alan R. (Plainfield, IL); Auciello, Orlando (Cary, NC)

1990-01-01T23:59:59.000Z

395

Constraining oceanic dust deposition using surface ocean dissolved Al  

E-Print Network (OSTI)

Constraining oceanic dust deposition using surface ocean dissolved Al Qin Han,1 J. Keith Moore,1; accepted 7 December 2007; published 12 April 2008. [1] We use measurements of ocean surface dissolved Al (DEAD) model to constrain dust deposition to the oceans. Our Al database contains all available

Moore, Keith

396

Electroplating method for producing ultralow-mass fissionable deposits  

DOE Patents (OSTI)

A method for producing ultralow-mass fissionable deposits for nuclear reactor dosimetry is described, including the steps of holding a radioactive parent until the radioactive parent reaches secular equilibrium with a daughter isotope, chemically separating the daughter from the parent, electroplating the daughter on a suitable substrate, and holding the electroplated daughter until the daughter decays to the fissionable deposit.

Ruddy, Francis H. (Monroeville, PA)

1989-01-01T23:59:59.000Z

397

Nitrogen Deposition onto the United States and Western Europe  

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

ORNL DAAC Data Set Change Information ORNL DAAC Data Set Change Information Data Set: Nitrogen Deposition onto the United States and Western Europe Effective Date of Revision: May 2, 2005 Data Set Citation: Holland, E. A., B. H. Braswell, J. M. Sulzman, and J. -F. Lamarque. 2005. Nitrogen Deposition onto the United States and Western Europe. Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. Revision Summary: The investigator advised us that data in two of the deposition files were a factor of 100 too large and the order of the records was reversed from the description in the documentation. NADP_wet_deposition_no3_0.5x0.5_grid_annual.txt NADP_wet_deposition_nh4_0.5x0.5_grid_annual.txt Data File Changes:

398

External Surveillance of Geothermal Scale Deposits Employing Iridium-192  

Open Energy Info (EERE)

External Surveillance of Geothermal Scale Deposits Employing Iridium-192 External Surveillance of Geothermal Scale Deposits Employing Iridium-192 Radiography Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: External Surveillance of Geothermal Scale Deposits Employing Iridium-192 Radiography Abstract Iridium-192 radiography has been successfully tested as a technique for externally monitoring geothermal scale deposits in piping at the Brawley, CA geothermal field. This technique is applied to piping that handles flowing brine to provide in situ scale deposition observations without the disadvantage of dismantling piping for visual scale inspection. Exposure times and film orientations have been optimized to yield excellent agreement between radiographically detected scale thicknesses and actual

399

Method of and apparatus for determining deposition-point temperature  

DOE Patents (OSTI)

Acoustic-wave sensor apparatus and method are disclosed for analyzing a normally liquid petroleum-based composition for monitoring deposition-point temperature. The apparatus includes at least one acoustic-wave device such as SAW, QCM, FPM, TSM or APM type devices in contact with the petroleum-based composition for sensing or detecting the surface temperature at which deposition occurs and/or rate of deposition as a function of temperature by sensing an accompanying change in frequency, phase shift, damping voltage or damping current of an electrical oscillator to a known calibrated condition. The acoustic wave device is actively cooled to monitor the deposition of constituents such as paraffins by determining the point at which solids from the liquid composition begin to form on the acoustic wave device. The acoustic wave device can be heated to melt or boil off the deposits to reset the monitor and the process can be repeated. 5 figs.

Mansure, A.J.; Spates, J.J.; Martin, S.J.

1998-10-27T23:59:59.000Z

400

Method of and apparatus for determining deposition-point temperature  

DOE Patents (OSTI)

Acoustic-wave sensor apparatus and method for analyzing a normally liquid petroleum-based composition for monitoring deposition-point temperature. The apparatus includes at least one acoustic-wave device such as SAW, QCM, FPM, TSM or APM type devices in contact with the petroleum-based composition for sensing or detecting the surface temperature at which deposition occurs and/or rate of deposition as a function of temperature by sensing an accompanying change in frequency, phase shift, damping voltage or damping current of an electrical oscillator to a known calibrated condition. The acoustic wave device is actively cooled to monitor the deposition of constituents such as paraffins by determining the point at which solids from the liquid composition begin to form on the acoustic wave device. The acoustic wave device can be heated to melt or boil off the deposits to reset the monitor and the process can be repeated.

Mansure, Arthur J. (Albuquerque, NM); Spates, James J. (Albuquerque, NM); Martin, Stephen J. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "deposits estimated rare" 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

ENERGY AND ANGULAR MOMENTUM DEPOSITION DURING COMMON ENVELOPE EVOLUTION  

E-Print Network (OSTI)

I consider three processes which enhance mass loss rate from a common envelope of a giant star with a main sequence or a white dwarf companion spiraling-in inside its envelope. I consider deposition of orbital energy and orbital angular momentum to the giant’s envelope, and in more detail the formation of jets by an accreting companion and their propagation in the envelope. I find that in many cases the deposition of orbital angular momentum to the envelope may be more important to the mass loss process than the deposition of orbital energy. Jets blown by an accreting companion, in particular a white dwarf, orbiting inside the outer regions of the giant’s envelope may also dominate over orbital energy deposition at early stage of the common envelope evolution. These imply that studies which ignore the deposition of angular momentum to the envelope and the effects of the accreting companion may reach wrong conclusions.

Noam Soker

2003-01-01T23:59:59.000Z

402

Validation of Geant4 simulation of electron energy deposition  

E-Print Network (OSTI)

Geant4-based simulations of the energy deposited by electrons in various materials are quantitatively compared to high precision calorimetric measurements taken at Sandia Laboratories. The experimental data concern electron beams of energy between a few tens of keV and 1 MeV at various incidence angles. Two experimental scenarios are evaluated: the longitudinal energy deposition pattern in a finely segmented detector, and the total energy deposited in a larger size calorimeter. The simulations are produced with Geant4 versions from 9.1 to 9.6; they involve models of electron-photon interactions in the standard and low energy electromagnetic packages, and various implementations of electron multiple scattering. Significant differences in compatibility with experimental data are observed in the longitudinal energy deposition patterns produced by the examined Geant4 versions, while the total deposited energy exhibits smaller variations across the various Geant4 versions, with the exception Geant4 9.4. The valida...

Batic, Matej; Pia, Maria Grazia; Saracco, Paolo; Weidenspointner, Georg

2013-01-01T23:59:59.000Z

403

Metal oxide morphology in argon-assisted glancing angle deposition  

Science Conference Proceedings (OSTI)

Glancing angle deposition (GLAD) is a thin film deposition technique capable of fabricating columnar architectures such as posts, helices, and chevrons with control over nanoscale film features. Argon bombardment during deposition modifies the GLAD process, producing films with new morphologies which have shown promise for sensing and photonic devices. The authors report modification of column tilt angle, film density, and specific surface area for 12 different metal oxide and fluoride film materials deposited using Ar-assisted GLAD. For the vapor flux/ion beam geometry and materials studied here, with increasing argon flux, the column tilt increases, film density increases, and specific surface area decreases. With a better understanding of the nature of property modification and the mechanisms responsible, the Ar-assisted deposition process can be more effectively targeted towards specific applications, including birefringent thin films or photonic crystal square spirals.

Sorge, J. B.; Taschuk, M. T.; Wakefield, N. G.; Sit, J. C.; Brett, M. J. [Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4 (Canada); Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 2V4 (Canada) and NRC National Institute for Nanotechnology, Edmonton, AB T6G 2M9 (Canada)

2012-03-15T23:59:59.000Z

404

COAL-FIRED UTILITY BOILERS: SOLVING ASH DEPOSITION PROBLEMS  

SciTech Connect

The accumulation of slagging and fouling ash deposits in utility boilers has been a source of aggravation for coal-fired boiler operators for over a century. Many new developments in analytical, modeling, and combustion testing methods in the past 20 years have made it possible to identify root causes of ash deposition. A concise and comprehensive guidelines document has been assembled for solving ash deposition as related to coal-fired utility boilers. While this report accurately captures the current state of knowledge in ash deposition, note that substantial research and development is under way to more completely understand and mitigate slagging and fouling. Thus, while comprehensive, this document carries the title ''interim,'' with the idea that future work will provide additional insight. Primary target audiences include utility operators and engineers who face plant inefficiencies and significant operational and maintenance costs that are associated with ash deposition problems. Pulverized and cyclone-fired coal boilers are addressed specifically, although many of the diagnostics and solutions apply to other boiler types. Logic diagrams, ash deposit types, and boiler symptoms of ash deposition are used to aid the user in identifying an ash deposition problem, diagnosing and verifying root causes, determining remedial measures to alleviate or eliminate the problem, and then monitoring the situation to verify that the problem has been solved. In addition to a step-by-step method for identifying and remediating ash deposition problems, this guideline document (Appendix A) provides descriptions of analytical techniques for diagnostic testing and gives extensive fundamental and practical literature references and addresses of organizations that can provide help in alleviating ash deposition problems.

Christopher J. Zygarlicke; Donald P. McCollor; Steven A. Benson; Jay R. Gunderson

2001-04-01T23:59:59.000Z

405

SEARCH FOR THE RARE KAON DECAY K{sup +} {yields} {pi}{sup +} {nu}{bar {nu}}  

SciTech Connect

This thesis describes the search for the rare decay K{sup +} {yields} {pi}{sup +} {nu}{bar {nu}} in the pion momentum region 140 MeV/c {le} P{sub {pi}{sup +}} {le} 195 MeV/c. This is a Flavor Changing Neutral Current (FCNC) decay which is forbidden to the first order in the Standard Model (SM) by the GIM mechanism. However, this decay mode is allowed in the second order by two Z-Penguin and one box diagram and is expected to have a branching ratio of (0.72 {+-} 0.21) x 10{sup -10}. This decay mode is sensitive to the coupling of top to down quark and therefore a measurement of the branching ratio for this decay mode provides a measurement of the Cabibbo-Kobayashi-Maskawa matrix element V{sub td}. The recent observation of two events in the pion momentum region 211 MeV/c {le} P{sup {pi}{sup +}} {le} 229 MeV/c estimates a branching ratio of 1.57{sub -0.82}{sup +1.75} x 10{sup -10} for the same decay mode. We have extended the search for this decay to the lower pion momentum region. Data collected by the Experiment E787 at Brookhaven National Laboratory during the 1996 and 1997 run were analyzed in this thesis.

BHUYAN,B.

2003-05-03T23:59:59.000Z

406

10 Questions for a Materials Scientist: Mr. Rare Earth -- Dr. Karl A.  

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

Materials Scientist: Mr. Rare Earth -- Dr. Karl Materials Scientist: Mr. Rare Earth -- Dr. Karl A. Gschneidner, Jr. 10 Questions for a Materials Scientist: Mr. Rare Earth -- Dr. Karl A. Gschneidner, Jr. April 3, 2013 - 12:59pm Addthis Dr. Karl Gschneidner is holding a neodymium-iron-boron magnet produced using a new, greener process. The process that Dr. Gschneidner helped develop doesn’t produce the environmentally unfriendly byproducts that result from traditional manufacturing methods. | Photo courtesy of Ames Laboratory. Dr. Karl Gschneidner is holding a neodymium-iron-boron magnet produced using a new, greener process. The process that Dr. Gschneidner helped develop doesn't produce the environmentally unfriendly byproducts that result from traditional manufacturing methods. | Photo courtesy of Ames

407

Ames Laboratory to Lead New Research Effort to Address Shortages in Rare  

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

Laboratory to Lead New Research Effort to Address Shortages in Laboratory to Lead New Research Effort to Address Shortages in Rare Earth and Other Critical Materials Ames Laboratory to Lead New Research Effort to Address Shortages in Rare Earth and Other Critical Materials January 9, 2013 - 12:13pm Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON - The U.S. Department of Energy announced today that a team led by Ames Laboratory in Ames, Iowa, has been selected for an award of up to $120 million over five years to establish an Energy Innovation Hub that will develop solutions to the domestic shortages of rare earth metals and other materials critical for U.S. energy security. The new research center, which will be named the Critical Materials Institute (CMI), will bring together leading researchers from academia, four Department of Energy

408

Measurement of surface acidity by [sup 31]P NMR of adsorbed trimethylphosphine: Application to vapor deposited SiO[sub 2] on Al[sub 2]O[sub 3] monolayer catalysts  

SciTech Connect

Experimental procedures for quantitative estimation of surface acid by [sup 31]P NMR of adsorbed phosphines are discussed. These procedures are illustrated by application to a commercial silica alumina cracking catalyst, and are applied to a series of silica on alumina monolayer catalysts prepared by chemical vapor deposition. The monolayer catalysts show a maximum in Broensted acidity for a deposition of 8 SiO[sub 2] groups per nm[sup 2] of Al[sub 2]O[sub 3] surface. The evolution of Broensted acid concentration as a function of amount of deposited silica can be accounted for by a simple kinetic model. 9 refs., 5 figs., 2 tabs

Sheng, Tai-Cheng (Shandong Univ. (China)); Gay, I.D. (Simon Fraser Univ., British Columbia (Canada))

1994-01-01T23:59:59.000Z

409

METHOD OF SEPARATING TETRAVALENT PLUTONIUM VALUES FROM CERIUM SUB-GROUP RARE EARTH VALUES  

DOE Patents (OSTI)

A method is presented for separating plutonium from the cerium sub-group of rare earths when both are present in an aqueous solution. The method consists in adding an excess of alkali metal carbonate to the solution, which causes the formation of a soluble plutonium carbonate precipitate and at the same time forms an insoluble cerium-group rare earth carbonate. The pH value must be adjusted to bctween 5.5 and 7.5, and prior to the precipitation step the plutonium must be reduced to the tetravalent state since only tetravalent plutonium will form the soluble carbonate complex.

Duffield, R.B.; Stoughton, R.W.

1959-02-01T23:59:59.000Z

410

Determination of contamination in rare earth materials by promptgamma activation analysis (PGAA)  

SciTech Connect

Prompt gamma activation analysis (PGAA) has been used to detect and quantify impurities in the analyses of rare earth (RE) oxides. The analytical results are discussed with respect to the importance of having a thorough identification and understanding of contaminant elements in these compounds regarding the function of the materials in their various applications. Also, the importance of using PGAA to analyze materials in support of other physico-chemical studies of the materials is discussed, including the study of extremely low concentrations of ions such as the rare earth ions themselves in bulk material matrices.

Perry, D.L.; English, G.A.; Firestone, R.B.; Molnar, G.L.; Revay,Zs.

2004-11-09T23:59:59.000Z

411

Upper Estimates for Banach Spaces  

E-Print Network (OSTI)

We study the relationship of dominance for sequences and trees in Banach spaces. In the context of sequences, we prove that domination of weakly null sequences is a uniform property. More precisely, if $(v_i)$ is a normalized basic sequence and $X$ is a Banach space such that every normalized weakly null sequence in $X$ has a subsequence that is dominated by $(v_i)$, then there exists a uniform constant $C\\geq1$ such that every normalized weakly null sequence in $X$ has a subsequence that is $C$-dominated by $(v_i)$. We prove as well that if $V=(v_i)_{i=1}^\\infty$ satisfies some general conditions, then a Banach space $X$ with separable dual has subsequential $V$ upper tree estimates if and only if it embeds into a Banach space with a shrinking FDD which satisfies subsequential $V$ upper block estimates. We apply this theorem to Tsirelson spaces to prove that for all countable ordinals $\\alpha$ there exists a Banach space $X$ with Szlenk index at most $\\omega^{\\alpha \\omega +1}$ which is universal for all Banach spaces with Szlenk index at most $\\omega^{\\alpha\\omega}$.

Freeman, Daniel B.

2009-08-01T23:59:59.000Z

412

Interruption Cost Estimate Calculator | Open Energy Information  

Open Energy Info (EERE)

Interruption Cost Estimate Calculator Interruption Cost Estimate Calculator Jump to: navigation, search Tool Summary Name: Interruption Cost Estimate (ICE) Calculator Agency/Company /Organization: Freeman, Sullivan & Co. Sector: Energy Focus Area: Grid Assessment and Integration, Energy Efficiency Resource Type: Online calculator, Software/modeling tools User Interface: Website Website: icecalculator.com/ Country: United States Cost: Free Northern America References: [1] Logo: Interruption Cost Estimate (ICE) Calculator This calculator is a tool designed for electric reliability planners at utilities, government organizations or other entities that are interested in estimating interruption costs and/or the benefits associated with reliability improvements. About The Interruption Cost Estimate (ICE) Calculator is an electric reliability

413

Ancillary effects of selected acid deposition control policies  

SciTech Connect

NAPAP is examining a number of potential ways to reduce the precursors (sulfur dioxide and nitrogen oxides) to acid deposition. However, the policies to reduce acid deposition will have other physical, biological and economic effects unrelated to acid deposition. For example, control policies that reduce sulfur dioxide emissions may also increase visibility. The effects of an acid deposition policy that are unrelated to acid deposition are referred to as ''ancillary'' effects. This reserch identifies and characterizes the principle physical and economic ancillary effects associated with acid deposition control and mitigation policies. In this study the ancillary benefits associated with four specific acid deposition policy options were investigated. The four policy options investigated are: (1) flue gas desulfurization, (2) coal blending or switching, (3) reductions in automobile emissions of NO/sub x/, and (4) lake liming. Potential ancillary benefits of each option were identified and characterized. Particular attention was paid to the literature on economic valuation of potential ancillary effects.

Moe, R.J.; Lyke, A.J.; Nesse, R.J.

1986-08-01T23:59:59.000Z

414

Method and apparatus for gas-metal arc deposition  

DOE Patents (OSTI)

Method and apparatus for gas-metal arc deposition of metal, metal alloys, and metal matrix composites are presented. The apparatus contains an arc chamber for confining a DC electrical arc discharge, the arc chamber containing an outlet orifice in fluid communication with a deposition chamber having a deposition opening in alignment with the orifice for depositing metal droplets on a coatable substrate. Metal wire is passed continuously into the arc chamber in alignment with the orifice. Electric arcing between the metal wire anode and the orifice cathode produces droplets of molten metal from the wire which pass through the orifice and into the deposition chamber for coating a substrate exposed at the deposition opening. When producing metal matrix composites, a suspension of particulates in an inert gas enters the deposition chamber via a plurality of feed openings below and around the orifice so that reinforcing particulates join the metal droplets to produce a uniform mixture which then coats the exposed substrate with a uniform metal matrix composite. 1 fig., 2 tabs.

Buhrmaster, C.L.; Clark, D.E.; Smartt, H.B.

1989-10-18T23:59:59.000Z

415

In situ analysis of ash deposits from black liquor combustion  

DOE Green Energy (OSTI)

Aerosols formed during combustion of black liquor cause a significant fire-side fouling problem in pulp mill recovery boilers. The ash deposits reduce heat transfer effectiveness, plug gas passages, and contribute to corrosion. Both vapors and condensation aerosols lead to the formation of such deposits. The high ash content of the fuel and the low dew point of the condensate salts lead to a high aerosol and vapor concentration in most boilers. In situ measurements of the chemical composition of these deposits is an important step in gaining a fundamental understanding of the deposition process. Infrared emission spectroscopy is used to characterize the composition of thin film deposits resulting from the combustion of black liquor and the deposition of submicron aerosols and vapors. New reference spectra of Na{sub 2}SO{sub 4}, K{sub 2}SO{sub 4}, Na{sub 2}CO{sub 3} and K{sub 2}CO{sub 3} pure component films were recorded and compared with the spectra of the black liquor deposit. All of the black liquor emission bands were identified using a combination of literature data and ab initio calculations. Ab initio calculations also predict the locations and intensities of bands for the alkali vapors of interest. 39 refs., 9 figs.

Bernath, P. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility]|[Univ. of Toronto, Ontario (Canada); Sinquefield, S.A. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility]|[Oregon State Univ., Eugene, OR (United States); Baxter, L.L.; Sclippa, G.; Rohlfing, C. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility; Barfield, M. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility]|[Univ. of Arizona, Tucson, AZ (United States)

1996-05-01T23:59:59.000Z

416

Natural gas deposits of Gulf of Thailand  

SciTech Connect

The rate of success in drilling for oil and gas in the Gulf of Thailand has been increased in a ratio of one to 3 since 1977. Two commercially explorable gas-condensate fields of total estimated reserves up to 5 trillion cu ft have been found. Union field is located in the S. Pattani trough and the Texas Pacific field is situated in the northern portion of the Malay Basin. Several gas and condensate reservoirs have been identified in lower to middle Miocene deltaic sandstones. A 620-km submarine pipeline connecting these fields northward to Sattahip Shore, is planned by the Natural Gas Organization of Thailand. Initial daily gas production of 150 MMCF from Union field is expected to be on stream by January 1981. Pre-tertiary basins in the relinquished areas of the inner Gulf of Thailand are considered to be future petroleum potential basins.

Achalabhuti, C.

1981-01-01T23:59:59.000Z

417

Rapid tooling by electron-beam vapor deposition  

Science Conference Proceedings (OSTI)

Electron-beam physical vapor deposition (EBPVD) of tooling metal, onto a shaped substrate to produce a replica of the substrate surface, offers the potential for significant cost savings over present methods of injection mold manufacturing. These savings are realized by the high deposition rate and the corresponding short manufacturing times provided by the EBPVD process. However, on route to realizing these gains, there are process technical issues which need to be resolved. Mold surfaces typically contain relatively high aspect ratio details that must be replicated to dimensional tolerances within +/- 2 mils. The deposited mold material must also provide high surface hardness and high fracture toughness. Good quality grain structure can be obtained in deposited Al 10-wt% Cu mold material when the substrate and corresponding deposit are at high process temperature. However, the resulting mold is subject to distortion during cooldown due to differential temperatures and shrinkage rates. Thermally controlled cooldown and the use of crushable substrate materials reduce these distortions, but not to the required levels of tolerance. Deposition of the Al-Cu at lower temperature produces columnar, poorly joined grains which result in a brittle and weakened mold material. When Al 10-wt% Cu metal vapor is deposited across high aspect ratio step features on the substrate surface, a grain growth defect can form in the step-shadowed regions of the deposited material, alongside the step feature. The step coverage defect consists of entrained voids which persist at intermediate deposition temperatures and produce a weakened mold. This final 1997 LDRD report investigates causes of this step coverage defect and offers methods for their control and elimination.

Meier, T. C., LLNL

1998-02-25T23:59:59.000Z

418

Rainfall-Rate Estimation Using Gaussian Mixture Parameter Estimator: Training and Validation  

Science Conference Proceedings (OSTI)

This study develops a Gaussian mixture rainfall-rate estimator (GMRE) for polarimetric radar-based rainfall-rate estimation, following a general framework based on the Gaussian mixture model and Bayes least squares estimation for weather radar–...

Zhengzheng Li; Yan Zhang; Scott E. Giangrande

2012-05-01T23:59:59.000Z

419

A Permeability-Porosity Relationship for Surface Deposition  

DOE Green Energy (OSTI)

The changes to porosity and permeability resulting from surface deposition and early dissolution in an initial rhombohedral array of uniform spheres are calculated. Very rapid decreases of permeability result from early deposition, with 48% reduction predicted in permeability from 8% reduction in porosity. After deposition has caused about a 1% increase in the radii of the spherical array, relative permeability reductions vary approximately as the square of relative changes in porosity. These theoretical results are matched with experimental data of Ioti et al. and shown to be satisfactory in some cases, but for others, a more complex model of the porous medium is needed.

Weir, G.J.; White, S.P.

1995-01-01T23:59:59.000Z

420

Physical vapor deposition and patterning of calcium fluoride films  

Science Conference Proceedings (OSTI)

Physical vapor deposition of calcium fluoride (CaF{sub 2}) thin films was performed via electron beam evaporation, resistive/thermal evaporation, and nonreactive radio frequency sputtering. Patterning of the resultant ''usable'' thin films was then also attempted in several ways, including by shadow mask deposition, liftoff, and direct chemical etching. Resistive evaporation produced the most stable films, having polycrystalline morphology with a moderately strong preference to the 331 orientation. The cleanest patterning results were obtained via a polymer/metal liftoff. The results and implications of each of the various deposition and patterning techniques are discussed.

Pinol, L.; Rebello, K.; Caruso, K.; Francomacaro, A. S.; Coles, G. L. [Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland 20723 (United States)

2011-03-15T23:59:59.000Z

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


421

Davis-Besse Cycle 16 Fuel Deposit Analysis and Characterization  

Science Conference Proceedings (OSTI)

Fuel deposit samples were collected from Davis-Besse Unit 1 during the EOC16 outage. The impetus behind collecting crud samples came from the observation of unusual deposits on fuel during EOC15, as well as measured crud-induced power shape (CIPS) during Cycle 16. The purpose of EOC16 sample campaign therefore was to determine the nature of the fuel deposits. Samples were collected from two fuel assemblies, one after one cycle of exposure and the other after two cycles of exposure. Samples were collected...

2011-12-23T23:59:59.000Z

422

Method for depositing high-quality microcrystalline semiconductor materials  

SciTech Connect

A process for the plasma deposition of a layer of a microcrystalline semiconductor material is carried out by energizing a process gas which includes a precursor of the semiconductor material and a diluent with electromagnetic energy so as to create a plasma therefrom. The plasma deposits a layer of the microcrystalline semiconductor material onto the substrate. The concentration of the diluent in the process gas is varied as a function of the thickness of the layer of microcrystalline semiconductor material which has been deposited. Also disclosed is the use of the process for the preparation of an N-I-P type photovoltaic device.

Guha, Subhendu (Bloomfield Hills, MI); Yang, Chi C. (Troy, MI); Yan, Baojie (Rochester Hills, MI)

2011-03-08T23:59:59.000Z

423

Estimation of Convective Rainfall from Lightning Observations  

Science Conference Proceedings (OSTI)

The objective of this study is to develop a technique to use lightning observations for estimating convective rainfall. A framework for rainfall estimation is developed in which key elements are 1) the rainfall–lightning ratio, that is, the ...

Alberto Tapia; James A. Smith; Michael Dixon

1998-11-01T23:59:59.000Z

424

Estimates of Large Spectrum Width from Autocovariances  

Science Conference Proceedings (OSTI)

The authors demonstrate that there are maximum measurable (saturation) spectrum widths for standard autocovariance techniques, the 0,1-lag autocovariance estimator and the 1,2-lag estimator. The maximal mean measurable spectrum widths from the ...

Valery M. Melnikov; Dusan S. Zrni?

2004-06-01T23:59:59.000Z

425

Estimating UV Index Climatology over Canada  

Science Conference Proceedings (OSTI)

Hourly UV index values at 45 sites in Canada were estimated using a statistical relationship between UV irradiance and global solar radiation, total ozone, and dewpoint temperature. The estimation method also takes into account the enhancement of ...

V. E. Fioletov; J. B. Kerr; L. J. B. McArthur; D. I. Wardle; T. W. Mathews

2003-03-01T23:59:59.000Z

426

Prediction accuracy of link-quality estimators  

Science Conference Proceedings (OSTI)

The accuracy of link-quality estimators (LQE) is missioncritical in many application scenarios in wireless sensor networks (WSN), since the link-quality metric is used for routing decisions or neighborhood formation. Link-quality estimation must offer ...

Christian Renner; Sebastian Ernst; Christoph Weyer; Volker Turau

2011-02-01T23:59:59.000Z

427

Estimated Cost Description Determination Date:  

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

Title, Location Title, Location Estimated Cost Description Determination Date: 2010 LCLS Undulator 2 is envisioned to be a 0.2 - 2keV FEL x-ray source, capable of delivering x-rays to End Station A (ESA), located in the existing Research Yard at SLAC. It will also be configurable as a non- FEL hard x-ray source capable of delivering a chirped x-ray pulse for single-shot broad-spectrum measurements. The project would entail reconstruction of the electron beam transport to End Station A, construction and installation of a new undulator in the tunnel upstream of ESA and beam dump, and construction and installation of x-ray transport, optics, and diagnostics in ESA. It also includes the construction of an annex to End Station A , providing hutches for experiment stations.

428

Software Cost Estimation and Control  

E-Print Network (OSTI)

this report, provided that the source of such material is fully acknowledged. Additional copies are available free of charge from: Publication Office Institute for Information Technology National Research Council of Canada Ottawa, Ontario, Canada K1A 0R6 Copyright 1994 par Conseil national de recherches du Canada Il est permis de citer de courts extraits et de reproduire des figures ou tableaux du présent rapport, à condition d'en identifier clairement la source. Des exemplaires supplémentaires peuvent être obtenus gratuitement à l'addresse suivante: Bureau des publications Institut de technologie de l'information Conseil national de recherches du Canada Ottawa (Ontario) Canada K1A 0R6 Software Cost Estimation 1 Table of Contents

M. R. Vigder; A.W. Kark

1994-01-01T23:59:59.000Z

429

2007 Estimated International Energy Flows  

Science Conference Proceedings (OSTI)

An energy flow chart or 'atlas' for 136 countries has been constructed from data maintained by the International Energy Agency (IEA) and estimates of energy use patterns for the year 2007. Approximately 490 exajoules (460 quadrillion BTU) of primary energy are used in aggregate by these countries each year. While the basic structure of the energy system is consistent from country to country, patterns of resource use and consumption vary. Energy can be visualized as it flows from resources (i.e. coal, petroleum, natural gas) through transformations such as electricity generation to end uses (i.e. residential, commercial, industrial, transportation). These flow patterns are visualized in this atlas of 136 country-level energy flow charts.

Smith, C A; Belles, R D; Simon, A J

2011-03-10T23:59:59.000Z

430

Intermediate-Term Uranium Supply Curve Estimation  

Science Conference Proceedings (OSTI)

A study was undertaken to estimate U.S. natural uranium supply capacities and associated production costs over the period 1979-1990 and to develop the general supply outlook to 2000. Annual supply capacity schedules were estimated on an individual mill and mine family basis. Future production schedules were estimated by balancing estimated supply capacity with DOE's future demand projections; the impact of private-sector inventory levels was accounted for.

1981-02-01T23:59:59.000Z

431

Estimating Flexoelectric Properties of Piezoelectric Crystals  

Science Conference Proceedings (OSTI)

Energy Harvesting Utilized Resonance Phenomena of Piezoelectric Unimorph · Estimating Flexoelectric Properties of Piezoelectric Crystals: Utilization of a ...

432

0 A Data-Adaptive Sum Test for Disease Association with Multiple Common or Rare Variants  

E-Print Network (OSTI)

Given typically weak associations between complex diseases and common variants, and emerging approaches to genotyping rare variants (e.g. by next-generation resequencing), there is an urgent demand to develop powerful association tests that are applicable to detecting disease association with both common and rare variants. In this article we develop such a test. It is based on data-adaptive modifications to a so-called Sum test originally proposed for common variants, which aims to strike a balance in utilizing information in multiple markers in linkage disequilibrium (LD) while reducing the cost of large degrees of freedom (DF) or of multiple testing adjustment. When applied to multiple common or rare variants in a candidate region, the proposed test is easy to use with DF=1 and without need for multiple testing adjustment. We show that the proposed test has high power across a wide range of scenarios with either common or rare variants, or both. In particular, under some situations the proposed test performs better than several commonly used methods. Key words: Genome-wide association study; GWAS; logistic regression; multi-marker analysis; SNP 1

Fang Han; Wei Pan

2009-01-01T23:59:59.000Z

433

Managing Natural and Reintroduced Rare Plant Populations within a Large Government Reservation  

SciTech Connect

California is home to many large government reservations that have been in existence for decades. Many of these reservations were formed to support various Department of Defense and Department of Energy national defense activities. Often, only a very small percentage of the reservation is actively used for programmatic activities, resulting in large areas of intact habitat. In some cases, this has benefited rare plant populations, as surrounding lands have been developed for residential or industrial use. However, land management activities such as the suppression or active use of fire and other disturbance (such as fire trail grading) can also work to either the detriment or benefit of rare plant populations at these sites. A management regime that is beneficial to the rare plant populations of interest and is at best consistent with existing site programmatic activities, and at a minimum does not impact such activities, has the best potential for a positive outcome. As a result, some species may be 'difficult' while others may be 'easy' to manage in this context, depending on how closely the species biological requirements match the programmatic activities on the reservation. To illustrate, we compare and contrast two rare annual plant species found at Lawrence Livermore National Laboratory's Site 300. Although several populations of Amsinckia grandiflora have been restored on the site, and all populations are intensively managed, this species continues to decline. In contrast, Blepharizonia plumosa appears to take advantage of the annual controlled burns conducted on the site, and is thriving.

Carlsen, T M; Paterson, L E; Alfaro, T M

2009-07-15T23:59:59.000Z

434

Search for the rare leptonic decays B+-->l+ nu l (l=e,mu)  

E-Print Network (OSTI)

We have performed a search for the rare leptonic decays B+-->?+nu ?(l=e,mu), using data collected at the ?(4S) resonance by the BABAR detector at the PEP-II storage ring. In a sample of 468×106 BB[over-bar] pairs we find ...

Zhao, M.

435

A Nonparametric Test for Trends in the Occurrence of Rare Events  

Science Conference Proceedings (OSTI)

A nonparametric test for trends in the occurrence of rare events, based on the average position that the events occupy in the series, is presented. This test is formally identical to the Wilcoxon–Mann–Whitney test for the difference of means ...

JoséA. López-Díaz

2003-08-01T23:59:59.000Z

436

Ternary rare earth-lanthanide sulfides. [Re = Eu, Sm or Yb  

DOE Patents (OSTI)

Disclosed is a new ternary rare earth sulfur compound having the formula La/sub 3-x/M/sub x/S/sub 4/, where M is europium, samarium, or ytterbium, with x = 0.15 to 0.8. The compound has good high-temperature thermoelectric properties and exhibits long-term structural stability up to 1000/sup 0/C.

Takeshita, Takuo; Gschneidner, K.A. Jr.; Beaudry, B.J.

1986-03-06T23:59:59.000Z

437

Thermal treatment for increasing magnetostrictive response of rare earth-iron alloy rods  

DOE Patents (OSTI)

Magnetostrictive rods formed from rare earth-iron alloys are subjected to a short time heat treatment to increase their Magnetostrictive response under compression. The heat treatment is preferably carried out at a temperature of from 900.degree. to 1000.degree. C. for 20 minutes to six hours.

Verhoeven, John D. (Ames, IA); McMasters, O. D. (Ames, IA)

1989-07-18T23:59:59.000Z

438

Nonlinear spectral density estimation: thresholding the correlogram  

E-Print Network (OSTI)

in a nonlinear way. The rate of convergence of the new estimators is quantified, and practical issues estimation of the spectral density function; examples include astronomy, economics, electrical engineering Einstein (1914); see Brillinger (1993) for a historical perspective. The prevalent spectral estimation

Politis, Dimitris N.

439

New Methodology for Natural Gas Production Estimates  

Reports and Publications (EIA)

A new methodology is implemented with the monthly natural gas production estimates from the EIA-914 survey this month. The estimates, to be released April 29, 2010, include revisions for all of 2009. The fundamental changes in the new process include the timeliness of the historical data used for estimation and the frequency of sample updates, both of which are improved.

Information Center

2010-04-26T23:59:59.000Z

440

Skew estimation of document images using bagging  

Science Conference Proceedings (OSTI)

This paper proposes a general-purpose method for estimating the skew angles of document images. Rather than to derive a skew angle merely from text lines, the proposed method exploits various types of visual cues of image skew available in local image ... Keywords: bagging estimator, document image analysis, floating cascade, radon transform, skew estimation

Gaofeng Meng; Chunhong Pan; Nanning Zheng; Chen Sun

2010-07-01T23:59:59.000Z

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


441

Initiated chemical vapor deposition of polymeric thin films : mechanism and applications  

E-Print Network (OSTI)

Initiated chemical vapor deposition (iCVD) is a novel technique for depositing polymeric thin films. It is able to deposit thin films of application-specific polymers in one step without using any solvents. Its uniqueness ...

Chan, Kelvin, Ph. D. Massachusetts Institute of Technology

2005-01-01T23:59:59.000Z

442

Evaluation of the Accuracy with Which Dry Deposition Can Be Measured with Current Micrometeorological Techniques  

Science Conference Proceedings (OSTI)

By reviewing the physics of the processes leading to dry deposition in the atmospheric surface layer, a number of corrections and possible errors in the determination of the dry deposition fluxes are identified. The concept of deposition velocity ...

J. A. Businger

1986-08-01T23:59:59.000Z

443

Chemical vapor deposition thin films as biopassivation coatings and directly patternable dielectrics  

E-Print Network (OSTI)

Organosilicon thin films deposited by pulsed plasma-enhanced chemical vapor deposition (PPECVD) and hot-filament chemical vapor deposition (HFCVD) were investigated as potential biopassivation coatings for neural probes. ...

Pryce Lewis, Hilton G. (Hilton Gavin), 1973-

2001-01-01T23:59:59.000Z

444

Preparation, characterization, and second-harmonic generation of a Langmuir-Blodgett film based on a rare-earth coordination compound  

Science Conference Proceedings (OSTI)

The rare-earth coordination compound (E)-N-hexadecyl-4-(2-(4-(dimethylamino)phenyl)-ethenyl)pyridinium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato)dysprosium(III) was synthesized. The LB films were prepared and characterized by UV-vis, IR, X-ray photoelectron spectroscopy, and low-angle X-ray diffraction. High-quality LB films up to 50 layers on the hydrophilic substrates of quartz, calcium fluoride, and glass were obtained. From the second-harmonic generation measurement, second-order molecular hyperpolarizability {beta} of the dysprosium complex was estimated to be about (6.6-9.3) x 10{sup {minus}28} esu. 14 refs., 6 figs., 1 tab.

Wang, K.Z.; Huang, C.H.; Xu, G.X.; Zhao, X.S.; Xie, X.M.; Wu, N.Z. [Peking Univ., Beijing (China); Xu, Y.; Liu, Y.Q.; Zhu, D.B. [Institute of Chemistry, Beijing (China)

1994-11-01T23:59:59.000Z

445

Geology and Mineral Deposits of Churchill County, Nevada | Open Energy  

Open Energy Info (EERE)

Geology and Mineral Deposits of Churchill County, Nevada Geology and Mineral Deposits of Churchill County, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geology and Mineral Deposits of Churchill County, Nevada Abstract Churchill County, in west-central Nevada, is an area of varied topography and geology that has had a rather small total mineral production. The western part of the county is dominated by the broad low valley of the Carson Sink, which is underlain by deposits of Lake Lahontan. The bordering mountain ranges to the west and south are of low relief and underlain largely by Tertiary volcanic and sedimentary units. Pre-Tertiary rocks are extensively exposed east of the Carson Sink in the Stillwater Range, Clan Alpine Mountains, Augusta Mountains, and New Pass Mountains. The eastern

446

Analysis Of Hot Springs And Associated Deposits In Yellowstone National  

Open Energy Info (EERE)

Hot Springs And Associated Deposits In Yellowstone National Hot Springs And Associated Deposits In Yellowstone National Park Using Aster And Aviris Remote Sensing Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Analysis Of Hot Springs And Associated Deposits In Yellowstone National Park Using Aster And Aviris Remote Sensing Details Activities (6) Areas (1) Regions (0) Abstract: The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Airborne Visible/IR Image Spectrometer (AVIRIS) data were used to characterize hot spring deposits in the Lower, Midway, and Upper Geyser Basins of Yellowstone National Park from the visible/near infrared (VNIR) to thermal infrared (TIR) wavelengths. Field observations of these basins provided the critical ground-truth for comparison with the

447

Y-12 Site Experience with Deposition Velocity Issues  

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

Site Experience with Site Experience with Deposition Velocity Issues Douglas Clark Analyst B&W Technical Services Y-12 May 9, 2012 Y-12 Site Experience with Deposition Velocity Issues Y-12 Specific Issues Y-12 Site Experience with Deposition Velocity Issues Windspeed - Calm Wind Conditions at Y-12 Site Y-12 Site Experience with Deposition Velocity Issues Windspeed - Stability Class Determinations * NRC RG 1.23 ΔT-only method * EPA-454/R-99-005 solar- radiation-delta-temperature (SRDT) method * Hybrid SR - DT method * wind direction standard deviation [sigma-theta (σ θ )] * elevation angle standard deviation [sigma-phi (σ φ )] * vertical wind speed standard deviation [sigma-omega (σ ω )], * wind-speed ratio method (u R ) * All evaluated using data from west

448

Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery  

Open Energy Info (EERE)

Of Quaternary Borate Deposits With Aster Satellite Imagery Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal Exploration Tool Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Remote Detection Of Quaternary Borate Deposits With Aster Satellite Imagery As A Geothermal Exploration Tool Details Activities (2) Areas (2) Regions (0) Abstract: Unavailable Author(s): C. Kratt, M. Coolbaugh, Wendy Calvin Published: GRC, 2006 Document Number: Unavailable DOI: Unavailable Multispectral Imaging At Rhodes Marsh Area (Kratt, Et Al., 2006) Multispectral Imaging At Teels Marsh Area (Kratt, Et Al., 2006) Rhodes Marsh Geothermal Area Teels Marsh Geothermal Area Retrieved from "http://en.openei.org/w/index.php?title=Remote_Detection_Of_Quaternary_Borate_Deposits_With_Aster_Satellite_Imagery_As_A_Geothermal_Exploration_Tool&oldid=389959

449

Automatic Monitoring of the Amount of Deposited Precipitation  

Science Conference Proceedings (OSTI)

An automatic device for measurement of the amount (weight) of deposited precipitation developed at the Institute of Atmospheric Physics, Academy of Sciences of the Czech Republic, is described. Examples of measurements of various types of ...

J. Fišák; J. Chum; J. Vojta; K. Bart??ková

2013-04-01T23:59:59.000Z

450

Deposition of Particles Liberated in Gusts of Wind  

Science Conference Proceedings (OSTI)

Theoretically, the aerial transport and deposition of fungal spores near to their source dependon the way in which they become airborne. Spores of some fungi are injected into the air, independentof wind speed, whereas others are blown from the ...

DONALD E. AYLOR; H. A. MCCARTNEY; A. BAINBRIOGE

1981-10-01T23:59:59.000Z

451

Kinetic Monte Carlo simulations of nanocrystalline film deposition  

E-Print Network (OSTI)

A full diffusion kinetic Monte Carlo algorithm is used to model nanocrystalline film deposition, and study the mechanisms of grain nucleation and microstructure formation in such films. The major finding of this work is ...

Ruan, Shiyun

452

Atomic layer deposition for the conformal coating of nanoporous materials  

Science Conference Proceedings (OSTI)

Atomic layer deposition (ALD) is ideal for applying precise and conformal coatings over nanoporous materials. We have recently used ALD to coat two nanoporous solids: anodic aluminum oxide (AAO) and silica aerogels. AAO possesses hexagonally ordered ...

Jeffrey W. Elam; Guang Xiong; Catherine Y. Han; H. Hau Wang; James P. Birrell; Ulrich Welp; John N. Hryn; Michael J. Pellin; Theodore F. Baumann; John F. Poco; Joe H. Satcher, Jr.

2006-01-01T23:59:59.000Z

453

Deposition and surface treatment with intense pulsed ion beams  

Science Conference Proceedings (OSTI)

Intense pulsed ion beams (500 keV, 30 kA, 0.5 {mu}s) are being investigated for materials processing. Demonstrated and potential applications include film deposition, glazing and joining, alloying and mixing, cleaning and polishing, corrosion improvement, polymer surface treatments, and nanophase powder synthesis. Initial experiments at Los Alamos have emphasized thin-film formation by depositing beam ablated target material on substrates. We have deposited films with complex stoichiometry such as YBa{sub 2}Cu{sub 3}O{sub 7-x}, and formed diamond-like-carbon films. Instantaneous deposition rates of 1 mm/sec have been achieved because of the short ion range (typically 1{mu}m), excellent target coupling, and the inherently high energy of these beams. Currently the beams are produced in single shot uncomplicated diodes with good electrical efficiency. High-voltage modulator technology and diodes capable of repetitive firing, needed for commercial application, are being developed.

Olson, J.C.; Davis, H.A.; Rej, D.J.; Waganaar, W.J. [Los Alamos National Lab., NM (United States); Stinnett, R.W.; McIntyre, D.C. [Sandia National Labs., Albuquerque, NM (United States)

1995-02-08T23:59:59.000Z

454

Modeling the dynamics and depositional patterns of sandy rivers  

E-Print Network (OSTI)

This thesis seeks to advance our understanding of the dynamic nature, spatial organization and depositional record of topography in sand-bedded rivers. I examine patterns and processes over a wide range of scales, on Earth ...

Jerolmack, Douglas J

2006-01-01T23:59:59.000Z

455

Preparing for a Deposition in a Patent Case  

Science Conference Proceedings (OSTI)

Preparing for a Deposition in a Patent Case. Arnold B. Silverman. Patent litigation in the United States is tried before a federal district court, with or without a jury.

456

Fabrication of solid oxide fuel cell by electrochemical vapor deposition  

DOE Patents (OSTI)

In a high temperature solid oxide fuel cell (SOFC), the deposition of an impervious high density thin layer of electrically conductive interconnector material, such as magnesium doped lanthanum chromite, and of an electrolyte material, such as yttria stabilized zirconia, onto a porous support/air electrode substrate surface is carried out at high temperatures (approximately 1100.degree.-1300.degree. C.) by a process of electrochemical vapor deposition. In this process, the mixed chlorides of the specific metals involved react in the gaseous state with water vapor resulting in the deposit of an impervious thin oxide layer on the support tube/air electrode substrate of between 20-50 microns in thickness. An internal heater, such as a heat pipe, is placed within the support tube/air electrode substrate and induces a uniform temperature profile therein so as to afford precise and uniform oxide deposition kinetics in an arrangement which is particularly adapted for large scale, commercial fabrication of SOFCs.

Brian, Riley (Willimantic, CT); Szreders, Bernard E. (Oakdale, CT)

1989-01-01T23:59:59.000Z

457

Fabrication of solid oxide fuel cell by electrochemical vapor deposition  

DOE Patents (OSTI)

In a high temperature solid oxide fuel cell (SOFC), the deposition of an impervious high density thin layer of electrically conductive interconnector material, such as magnesium doped lanthanum chromite, and of an electrolyte material, such as yttria stabilized zirconia, onto a porous support/air electrode substrate surface is carried out at high temperatures (/approximately/1100/degree/ /minus/ 1300/degree/C) by a process of electrochemical vapor deposition. In this process, the mixed chlorides of the specific metals involved react in the gaseous state with water vapor resulting in the deposit of an impervious thin oxide layer on the support tube/air electrode substrate of between 20--50 microns in thickness. An internal heater, such as a heat pipe, is placed within the support tube/air electrode substrate and induces a uniform temperature profile therein so as to afford precise and uniform oxide deposition kinetics in an arrangement which is particularly adapted for large scale, commercial fabrication of SOFCs.

Riley, B.; Szreders, B.E.

1988-04-26T23:59:59.000Z

458

Chemical vapor deposition of organosilicon and sacrificial polymer thin films  

E-Print Network (OSTI)

Chemical vapor deposition (CVD) produced films for a wide array of applications from a variety of organosilicon and organic precursors. The structure and properties of thin films were controlled by varying processing ...

Casserly, Thomas Bryan

2005-01-01T23:59:59.000Z

459

Glow discharge deposition at high rates using disilane  

DOE Green Energy (OSTI)

The research program reported makes use of the fact that amorphous silicon films can be grown faster from disilane in a glow discharge than from the traditional silane. The goal is to find a method to grow films at a high rate and with sufficiently high quality to be used in an efficient solar cell. It must also be demonstrated that the appropriate device structure can be successfully fabricated under conditions which give high deposition rates. High quality intrinsic films have been deposited at 20 A/s. Efficiency of 5.6% on steel substrates and 5.3% on glass substrates were achieved using disilane i-layers deposited at 15 A/s in a basic structure, without wide-gap doped layers or light trapping. Wide gap p-layers were deposited using disilane. Results were compared with those obtained at Vactronic using high power discharges of silane-hydrogen mixtures. (LEW)

Rajeswaran, G.; Corderman, R.R.; Kampas, F.J.; Vanier, P.E.

1985-01-01T23:59:59.000Z

460

Initiated chemical vapor deposition of functional polyacrylic thin films  

E-Print Network (OSTI)

Initiated chemical vapor deposition (iCVD) was explored as a novel method for synthesis of functional polyacrylic thin films. The process introduces a peroxide initiator, which can be decomposed at low temperatures (<200?C) ...

Mao, Yu, 1975-

2005-01-01T23:59:59.000Z

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


461

Properties of vacuum arc deposited amorphous hard carbon films  

Science Conference Proceedings (OSTI)

Amorphous hard carbon films formed by vacuum arc deposition are hydrogen-free, dense, and very hard. The properties of amorphous hard carbon films depend strongly on the energy of the incident ions. A technique which is called Plasma Immersion Ion Implantation can be applied to vacuum arc deposition of amorphous hard carbon films to influence the ion energy. The authors have studied the influence of the ion energy on the elastic modulus determined by an ultrasonic method, and have measured the optical gap for films with the highest sp{sup 3} content they have obtained so far with this deposition technique. The results show an elastic modulus close to that of diamond, and an optical gap of 2.1 eV which is much greater than for amorphous hard carbon films deposited by other techniques.

Anders, S.; Anders, A.; Raoux, S. [Lawrence Berkeley Lab., CA (United States)] [and others

1995-04-01T23:59:59.000Z

462

Computational Intelligence for Deepwater Reservoir Depositional Environments Interpretation  

E-Print Network (OSTI)

Predicting oil recovery efficiency of a deepwater reservoir is a challenging task. One approach to characterize a deepwater reservoir and to predict its producibility is by analyzing its depositional information. This research proposes a deposition-based stratigraphic interpretation framework for deepwater reservoir characterization. In this framework, one critical task is the identification and labeling of the stratigraphic components in the reservoir, according to their depositional environments. This interpretation process is labor intensive and can produce different results depending on the stratigrapher who performs the analysis. To relieve stratigrapher's workload and to produce more consistent results, we have developed a novel methodology to automate this process using various computational intelligence techniques. Using a well log data set, we demonstrate that the developed methodology and the designed workflow can produce finite state transducer models that interpret deepwater reservoir depositional...

Yu, Tina; Clark, Julian; Sullivan, Morgan; 10.1016/j.jngse.2011.07.014

2013-01-01T23:59:59.000Z

463

U.S. Mercury Deposition Under Alternative Regulatory Scenarios  

Science Conference Proceedings (OSTI)

The Federal Clean Air Mercury Rule regulates electric utility mercury emissions while permitting individual states to enact stricter rules at their discretion. Computer modeling has shown how mercury deposition patterns will change if all regulated utility power plants follow the Federal rule, vs. alternative state rules. These patterns of deposition can be compared to the limiting case: what if all U.S. utility mercury emissions were zeroed out? The findings show that regulations stricter than the Feder...

2007-12-14T23:59:59.000Z

464

Molybdenum enhanced low-temperature deposition of crystalline silicon nitride  

DOE Patents (OSTI)

A process for chemical vapor deposition of crystalline silicon nitride is described which comprises the steps of: introducing a mixture of a silicon source, a molybdenum source, a nitrogen source, and a hydrogen source into a vessel containing a suitable substrate; and thermally decomposing the mixture to deposit onto the substrate a coating comprising crystalline silicon nitride containing a dispersion of molybdenum silicide. 5 figures.

Lowden, R.A.

1994-04-05T23:59:59.000Z

465

Process for thin film deposition of cadmium sulfide  

DOE Patents (OSTI)

The present invention teaches a process for depositing layers of cadmium sulfide. The process includes depositing a layer of cadmium oxide by spray pyrolysis of a cadmium salt in an aqueous or organic solvent. The oxide film is then converted into cadmium sulfide by thermal ion exchange of the O.sup.-2 for S.sup.-2 by annealing the oxide layer in gaseous sulfur at elevated temperatures.

Muruska, H. Paul (East Windsor, NJ); Sansregret, Joseph L. (Scotch Plains, NJ); Young, Archie R. (Montclair, NJ)

1982-01-01T23:59:59.000Z

466

Photosensitivity of Pulsed Laser Deposited Amorphous (GeSe2)100 ...  

Science Conference Proceedings (OSTI)

Photosensitivity of deposited layers in as-deposited as well as relaxed state was ... Ion Exchanged Mixed Glass Cullet Proppants for Stimulation of Oil and ...

467

Low Temperature Direct Growth of Graphene Films on Transparent Substrates by Chemical Vapor Deposition  

E-Print Network (OSTI)

and Few- Layer Graphene by Chemical Vapor Deposition",Liu, W. , et al. (2010). "Chemical vapor deposition of large5 1.3.3. Chemical Vapor

Antoine, Geoffrey Sandosh Jeffy

2013-01-01T23:59:59.000Z

468

ZnO Nanowires Grown on ZnO Thin Film Deposited by Atomic Layer ...  

Science Conference Proceedings (OSTI)

In this work the atomic layer deposition (ALD) technique was used to deposit the seeding ... 3D Multiwall Carbon Nanotubes (MWCNTs) for Li-Ion Battery Anode.

469

Stratigraphy of the PB-1 well, Nopal I uranium deposit, Sierra Pena Blanca, Chihuahua, Mexico  

E-Print Network (OSTI)

Mexico, in Uranium Deposits in Volcanic Rocks, International Atomic EnergyMéxico, in Uranium Deposits in Volcanic Rocks, International Atomic Energy

Dobson, P.

2009-01-01T23:59:59.000Z

470

Natural mercury isotope variation in coal deposits and organic soils  

SciTech Connect

There is a need to distinguish among sources of Hg to the atmosphere in order to more fully understand global Hg pollution. In this study we investigate whether coal deposits within the United States, China, and Russia-Kazakhstan, which are three of the five greatest coal-producing regions, have diagnostic Hg isotopic fingerprints that can be used to discriminate among Hg sources. We also investigate the Hg isotopic composition of modern organic soil horizons developed in areas distant from point sources of Hg in North America. Mercury stored in coal deposits displays a wide range of both mass dependent fractionation and mass independent fractionation. {delta}{sup 202}Hg varies in coals by 3{per_thousand} and {Delta}{sup 201}Hg varies by 0.9{per_thousand}. Combining these two Hg isotope signals results in what may be a unique isotopic 'fingerprint' for many coal deposits. Mass independent fractionation of mercury has been demonstrated to occur during photochemical reactions of mercury. This suggests that Hg found in most coal deposits was subjected to photochemical reduction near the Earth's surface prior to deposition. The similarity in MDF and MIF of modern organic soils and coals from North America suggests that Hg deposition from coal may have imprinted an isotopic signature on soils. This research offers a new tool for characterizing mercury inputs from natural and anthropogenic sources to the atmosphere and provides new insights into the geochemistry of mercury in coal and soils. 35 refs., 2 figs., 1 tab.

Abir, Biswas; Joel D. Blum; Bridget A. Bergquist; Gerald J. Keeler; Zhouqing Xie [University of Michigan, Ann Arbor, MI (United States). Department of Geological Sciences

2008-11-15T23:59:59.000Z

471

Film deposition and surface modification using intense pulsed ion beams  

SciTech Connect

High-power pulsed ion beams have been used to ablate material for ultrahigh-rate film deposition and to treat the surfaces of alloys. Pulsed ion beams were provided by the high-power-density Gamble II facility at the Naval Research Laboratory [high voltage ({similar_to}900 keV), short pulse (60 ns)] and the lower-power-density Anaconda facility at Los Alamos National Laboratory [lower voltage ({similar_to}300 keV), longer pulse (400 ns)]. Peak film deposition rates after target ablation reached 1 mm/s. Films of pure Al, pure Ta, YBCO, and Ni--Zn ferrite were deposited on glass and single-crystal substrates, in some cases heated. The film deposition process was studied with framing photography, a bolometer, and other diagnostics to gain an understanding of the ablation, transport, and deposition steps. Stoichiometric deposition of multicomponent targets has been demonstrated. Film morphology remains poor, but has steadily improved, and our present understanding points the way to further improvement. Lower fluences ({similar_to}5 J/cm{sup 2}) were used to investigate rapid thermal processing of metal surfaces for the enhancement of corrosion resistance. The results in this area have been negative, but here again the knowledge gained through these experiments allows us to propose directions for improvement. {copyright} {ital 1995} {ital American} {ital Vacuum} {ital Society}

Meli, C.A.; Grabowski, K.S.; Hinshelwood, D.D.; Stephanakis, S.J. [Naval Research Laboratory, Washington, DC 20375 (United States)] [Naval Research Laboratory, Washington, DC 20375 (United States); Rej, D.J.; Waganaar, W.J. [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

1995-05-01T23:59:59.000Z

472

Deposit information in gasoline engines: Part I. Base oil effects in sequence VE deposits  

SciTech Connect

Base oil effects on sludge and deposit formation in the ASTM Sequence VE were studied with blends made using the same American Petroleum Institute (API) SG performance package and the same viscosity improver. One percent of the dispersant was removed from the formulation to accentuate base oil effects. Nine tests on six different 100N base oils were run. Sequence VE test lubricant drain analyses show differences in insolubles, viscosity, and particle size with base stock variations. The most significant base oil factors which can be used to predict Sequence VE sludge ratings are the base oil saturate content, polar content, and volatility. While all oils studied passed the Sequence VE API SG engine varnish and piston varnish requirements, higher levels of poly-nuclear aromatics (PNA`s) are shown to increase the severity of these ratings.

Supp, J.A.; Kornbrekke, R.E.; Roby, S.H. [Lubrizol Corporation, Wickliffe, OH (United States)

1994-12-01T23:59:59.000Z

473

Method and apparatus for removing and preventing window deposition during photochemical vapor deposition (photo-CVD) processes  

DOE Patents (OSTI)

Unwanted build-up of the film deposited on the transparent light-transmitting window of a photochemical vacuum deposition (photo-CVD) chamber is eliminated by flowing an etchant into the part of the photolysis region in the chamber immediately adjacent the window and remote from the substrate and from the process gas inlet. The respective flows of the etchant and the process gas are balanced to confine the etchant reaction to the part of the photolysis region proximate to the window and remote from the substrate. The etchant is preferably one that etches film deposit on the window, does not etch or affect the window itself, and does not produce reaction by-products that are deleterious to either the desired film deposited on the substrate or to the photolysis reaction adjacent the substrate.

Tsuo, Simon (Lakewood, CO); Langford, Alison A. (Boulder, CO)

1989-01-01T23:59:59.000Z

474

Method and apparatus for removing and preventing window deposition during photochemical vapor deposition (photo-CVD) processes  

DOE Patents (OSTI)

Unwanted build-up of the film deposited on the transparent light-transmitting window of a photochemical vacuum deposition (photo-CVD) chamber is eliminated by flowing an etchant into the part of the photolysis region in the chamber immediately adjacent the window and remote from the substrate and from the process gas inlet. The respective flows of the etchant and the process gas are balanced to confine the etchant reaction to the part of the photolysis region proximate to the window and remote from the substrate. The etchant is preferably one that etches film deposit on the window, does not etch or affect the window itself, and does not produce reaction by-products that are deleterious to either the desired film deposited on the substrate or to the photolysis reaction adjacent the substrate. 3 figs.

Tsuo, S.; Langford, A.A.

1989-03-28T23:59:59.000Z

475

Control of Toxic Chemicals in Puget Sound, Phase 3: Study of Atmospheric Deposition of Air Toxics to the Surface of Puget Sound  

DOE Green Energy (OSTI)

The results of the Phase 1 Toxics Loading study suggested that runoff from the land surface and atmospheric deposition directly to marine waters have resulted in considerable loads of contaminants to Puget Sound (Hart Crowser et al. 2007). The limited data available for atmospheric deposition fluxes throughout Puget Sound was recognized as a significant data gap. Therefore, this study provided more recent or first reported atmospheric deposition fluxes of PAHs, PBDEs, and select trace elements for Puget Sound. Samples representing bulk atmospheric deposition were collected during 2008 and 2009 at seven stations around Puget Sound spanning from Padilla Bay south to Nisqually River including Hood Canal and the Straits of Juan de Fuca. Revised annual loading estimates for atmospheric deposition to the waters of Puget Sound were calculated for each of the toxics and demonstrated an overall decrease in the atmospheric loading estimates except for polybrominated diphenyl ethers (PBDEs) and total mercury (THg). The median atmospheric deposition flux of total PBDE (7.0 ng/m2/d) was higher than that of the Hart Crowser (2007) Phase 1 estimate (2.0 ng/m2/d). The THg was not significantly different from the original estimates. The median atmospheric deposition flux for pyrogenic PAHs (34.2 ng/m2/d; without TCB) shows a relatively narrow range across all stations (interquartile range: 21.2- 61.1 ng/m2/d) and shows no influence of season. The highest median fluxes for all parameters were measured at the industrial location in Tacoma and the lowest were recorded at the rural sites in Hood Canal and Sequim Bay. Finally, a semi-quantitative apportionment study permitted a first-order characterization of source inputs to the atmosphere of the Puget Sound. Both biomarker ratios and a principal component analysis confirmed regional data from the Puget Sound and Straits of Georgia region and pointed to the predominance of biomass and fossil fuel (mostly liquid petroleum products such as gasoline and/or diesel) combustion as source inputs of combustion by-products to the atmosphere of the region and subsequently to the waters of Puget Sound.

Brandenberger, Jill M.; Louchouarn, Patrick; Kuo, Li-Jung; Crecelius, Eric A.; Cullinan, Valerie I.; Gill, Gary A.; Garland, Charity R.; Williamson, J. B.; Dhammapala, R.

2010-07-05T23:59:59.000Z

476

Interfacial reactions of Gd- and Nb-oxide based high-k layers deposited by aqueous chemical solution deposition  

Science Conference Proceedings (OSTI)

In this work, ultrathin layers of GdOx, NbOx and GdNbOx, deposited with ACSD have been investigated. Because of the high temperature anneals utilized in the process flow of electronic devices, interactions of the deposited high-k materials and the substrate ... Keywords: ACSD, Ellipsometry, GATR-FTIR, GdNbOx, GdOx, HT-XRD, High temperature anneal, High-k, Interlayer formation, NbOx, Thickness variation

D. Dewulf; N. Peys; S. Van Elshocht; G. Rampelberg; C. Detavernier; S. De Gendt; A. Hardy; M. K. Van Bael

2011-07-01T23:59:59.000Z

477

Probabilistic accident consequence uncertainty analysis -- Uncertainty assessment for deposited material and external doses. Volume 2: Appendices  

SciTech Connect

The development of two new probabilistic accident consequence codes, MACCS and COSYMA, was completed in 1990. These codes estimate the consequence from the accidental releases of radiological material from hypothesized accidents at nuclear installations. In 1991, the US Nuclear Regulatory Commission and the Commission of the European Communities began cosponsoring a joint uncertainty analysis of the two codes. The ultimate objective of this joint effort was to systematically develop credible and traceable uncertainty distributions for the respective code input variables. A formal expert judgment elicitation and evaluation process was identified as the best technology available for developing a library of uncertainty distributions for these consequence parameters. This report focuses on the results of the study to develop distribution for variables related to the MACCS and COSYMA deposited material and external dose models. This volume contains appendices that include (1) a summary of the MACCS and COSYMA consequence codes, (2) the elicitation questionnaires and case structures, (3) the rationales and results for the panel on deposited material and external doses, (4) short biographies of the experts, and (5) the aggregated results of their responses.

Goossens, L.H.J.; Kraan, B.C.P.; Cooke, R.M. [Delft Univ. of Technology (Netherlands); Boardman, J. [AEA Technology (United Kingdom); Jones, J.A. [National Radiological Protection Board (United Kingdom); Harper, F.T.; Young, M.L. [Sandia National Labs., Albuquerque, NM (United States); Hora, S.C. [Univ. of Hawaii, Hilo, HI (United States)

1997-12-01T23:59:59.000Z

478

Robust Talker Direction Estimation Based on Weighted CSP Analysis and Maximum Likelihood Estimation  

Science Conference Proceedings (OSTI)

This paper describes a new talker direction estimation method for front-end processing to capture distant-talking speech by using a microphone array. The proposed method consists of two algorithms: One is a TDOA (Time Delay Of Arrival) estimation algorithm ... Keywords: robust talker direction estimation, CSP analysis, CSP coefficient subtraction, ML estimation, microphone array

Yuki Denda; Takanobu Nishiura; Yoichi Yamashita

2006-03-01T23:59:59.000Z

479

Fluid mixing during deposition of bedded-replacement (BR) deposits in the Illinois-Kentucky fluorspar district  

SciTech Connect

The Illinois-Kentucky(IK) district is unusual by comparison to other Mississippi Valley-type (MVT) districts in the central US in that it contains fluorspar mineralization primarily, with subordinate quantities of base metals. This mineralization occurs as vein, BR, and breccia-hosted deposits. A clearly discernible paragenetic sequence of color banded fluorite sulfides, carbonates, and sulfates is present in BR deposits in three sub-districts: Cave-in-Rock, Harris Creek, and Carrsville. Homogenization temperatures (T[sub b]) and salinities of fluids in fluorite show that BR deposits formed from at least three fluids, a lower temperature-higher salinity connate fluid (F1) and a higher temperature-lower salinity connate fluid (F2) that mixed at the site of deposition. These fluids were followed by a lower temperature-lower salinity meteoric dominated fluid (F3). The involvement of two distinct regional fluids: a lower temperature, more-saline fluid, and a warmer, less-saline fluid, during mineralization of MVT deposits has previously been recognized for Pb-Zn deposits in southeast Missouri (Shelton et al., 1992), and east Tennessee (Zimmerman and Kesler, 1981; Taylor et al. 1983).

Spry, P.G.; Fuhrmann, G.D. (Iowa State Univ., Ames, IA (United States). Dept. of Geological Atmospheric Sciences)

1993-03-01T23:59:59.000Z

480

Ash Deposit Formation and Deposit Properties. A Comprehensive Summary of Research Conducted at Sandia's Combustion Research Facility  

SciTech Connect

This report summarizes experimental and theoretical work performed at Sandia's Combustion Research Facility over the past eight years on the fate of inorganic material during coal combustion. This work has been done under four broad categories: coal characterization, fly ash formation, ash deposition, and deposit property development. The objective was to provide sufficient understanding of these four areas to be able to predict coal behavior in current and advanced conversion systems. This work has led to new characterization techniques for fuels that provide, for the first time, systematic and species specific information regarding the inorganic material. The transformations of inorganic material during combustion can be described in terms of the net effects of the transformations of these individual species. Deposit formation mechanisms provide a framework for predicting deposition rates for abroad range of particle sizes. Predictions based on these rates many times are quite accurate although there are important exceptions. A rigorous framework for evaluating deposit has been established. Substantial data have been obtained with which to exercise this framework, but this portion of the work is less mature than is any other. Accurate prediction of deposit properties as functions of fuel properties, boiler design, and boiler operating conditions represents the single most critical area where additional research is needed.

Larry L. Baxter

2000-08-01T23:59:59.000Z

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481

Reliability Estimates for Power Supplies  

Science Conference Proceedings (OSTI)

Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When one of the power supplies fails to operate, the research program has to be either temporarily changed or halted. If one of the power supplies for the toroidal or ohmic heating coils fails, the operations have to be suspended or the research is continued at de-rated parameters until a repair is completed. If one of the power supplies used in the auxiliary plasma heating systems fails the research is often temporarily changed until a repair is completed. The power supplies are operated remotely and repairs are only performed when the power supplies are off line, so that failure of a power supply does not cause any risk to personnel. The DIII-D Trouble Report database was used to determine the number of power supply faults (over 1,700 reports), and tokamak annual operations data supplied the number of shots, operating times, and power supply usage for the DIII-D operating campaigns between mid-1987 and 2004. Where possible, these power supply failure rates from DIII-D will be compared to similar work that has been performed for the Joint European Torus equipment. These independent data sets support validation of the fusion-specific failure rate values.

Lee C. Cadwallader; Peter I. Petersen

2005-09-01T23:59:59.000Z

482

In-situ deposition of high-k dielectrics on III-V compound semiconductor in MOCVD system  

E-Print Network (OSTI)

In situ deposition of high-k materials to passivate the GaAs in metal organic chemical vapor deposition (MOCVD) system was well demonstrated. Both atomic layer deposition (ALD) and chemical vapor deposition (CVD) methods ...

Cheng, Cheng-Wei, Ph.D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

483

High-pressure studies of rare earth material could lead to lighter, cheaper  

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

22013_earth 22013_earth 12/20/2013 A Lawrence Livermore researcher prepares a sample at Oak Ridge National Laboratory's Spallation Neutrons and Pressure Diffractometer (SNAP). High-pressure studies of rare earth material could lead to lighter, cheaper magnets Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Sometimes you have to apply a little pressure to get magnetic materials to reveal their secrets. By placing a permanent magnet under high pressures, Lawrence Livermore researchers are exploring how atomic structure enhances magnetic strength and resistance to demagnetization. This fundamental research into magnetic behavior has important implications for engineering stronger, cheaper magnets. Permanent magnets based on rare earth elements are in high demand for

484

Using NERSC Systems, Physcists Close in on a Rare-Particle Decay Process  

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

Using NERSC Systems, Using NERSC Systems, Physcists Close in on a Rare-Particle Decay Process Using NERSC Systems, Physicists Close In on a Rare-Particle Decay Process Underground Experiment May Unlock the Mysteries of the Neutrino June 11, 2012 | Tags: Accelerator Science, High Energy Physics (HEP), Hopper NERSC Contact: Linda Vu, lvu@lbl.gov, +1 510 495 2402 exo-1.jpg Located at the Waste Isolation Pilot Plant near Carlsbad, New Mexico, EXO-200 is a 200-kg detector using liquid xenon, enriched in the isotope 136, to detect "neutrino-less double beta decay." With help from supercomputers at the Department of Energy's National Energy Research Scientific Computing Center (NERSC), the Enriched Xenon Observatory experiment (EXO-200) has placed the most stringent constraints

485

Microsoft Word - US-EU WORKSHOP on RARE EARTHS Program 20101206  

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

Trans-Atlantic Workshop Trans-Atlantic Workshop on Rare Earth Elements and Other Critical Materials for a Clean Energy Future Hosted by the MIT Energy Initiative Massachusetts Institute of Technology 400 Main Street, Building E19-307, Cambridge, Massachusetts December 3, 2010 Workshop Background Rare earth elements and other critical raw materials are essential to our industrial production, particularly for clean energy options like wind turbines, solar cells, electric vehicles, and energy- efficient lighting. Wind turbines are the most rapidly growing source of electricity generation in both Europe and the United States. Solar photovoltaic cells are steadily declining in cost, and their widespread, cost-effective use on power grids is anticipated within the coming decade.

486

Prospects for Non-Rare Earth Permanent Magnets for Traction Motors and Generators  

Science Conference Proceedings (OSTI)

With the advent of high-flux density permanent magnets based on rare earth elements such as neodymium (Nd) in the 1980s, permanent magnet-based electric machines had a clear performance and cost advantage over induction machines when weight and size were factors such as in hybrid electric vehicles and wind turbines. However, the advantages of the permanent magnet-based electric machines may be overshadowed by supply constraints and high prices of their key constituents, rare earth elements, which have seen nearly a 10-fold increase in price in the last 5 years and the imposition of export limits by the major producing country, China, since 2010. We outline the challenges, prospects, and pitfalls for several potential alloys that could replace Nd-based permanent magnets with more abundant and less strategically important elements.

Kramer, Matthew; McCallum, Kendall; Anderson, Iver; Constantinides, Steven

2012-06-29T23:59:59.000Z

487

Iron-Nitride Alloy Magnets: Transformation Enabled Nitride Magnets Absent Rare Earths (TEN Mare)  

Science Conference Proceedings (OSTI)

REACT Project: Case Western is developing a highly magnetic iron-nitride alloy to use in the magnets that power electric motors found in EVs and renewable power generators. This would reduce the overall price of the motor by eliminating the expensive imported rare earth minerals typically found in today’s best commercial magnets. The iron-nitride powder is sourced from abundant and inexpensive materials found in the U.S. The ultimate goal of this project is to demonstrate this new magnet system, which contains no rare earths, in a prototype electric motor. This could significantly reduce the amount of greenhouse gases emitted in the U.S. each year by encouraging the use of clean alternatives to oil and coal.

None

2012-01-01T23:59:59.000Z

488

Final Report to the Department of the Energy for Project Entitled Rare Isotope Science Assessment Committee  

SciTech Connect

The Rare Isotope Science Assessment Committee (RISAC) was convened by the National Research Council in response to an informal request from the DOE’s Office of Nuclear Physics and the White House Office of Management and Budget. The charge to the committee is to examine and assess the broader scientific and international contexts of a U.S.-based rare-isotope facility. The committee met for the first time on December 16-17, 2005, in Washington, DC, and held three subsequent meetings. The committee’s final report was publicly released in unedited, prepublication form on Friday, December 8, 2006. The report was published in full-color by the National Academies Press in April 2007. Copies of the report were distributed to key decision makers and stakeholders around the world.

Donald Shapero; Timothy I. Meyer

2007-08-14T23:59:59.000Z

489

Method of increasing magnetostrictive response of rare earth-iron alloy rods  

DOE Patents (OSTI)

This invention comprises a method of increasing the magnetostrictive response of rare earth-iron (RFe) magnetostrictive alloy rods by a thermal-magnetic treatment. The rod is heated to a temperature above its Curie temperature, viz. from 400.degree. to 600.degree. C.; and, while the rod is at that temperature, a magnetic field is directionally applied and maintained while the rod is cooled, at least below its Curie temperature.

Verhoeven, John D. (Ames, IA); McMasters, O. Dale (Ames, IA); Gibson, Edwin D. (Ames, IA); Ostenson, Jerome E. (Ames, IA); Finnemore, Douglas K. (Ames, IA)

1989-04-04T23:59:59.000Z

490

State energy data report 1994: Consumption estimates  

Science Conference Proceedings (OSTI)

This document provides annual time series estimates of State-level energy consumption by major economic sector. The estimates are developed in the State Energy Data System (SEDS), operated by EIA. SEDS provides State energy consumption estimates to members of Congress, Federal and State agencies, and the general public, and provides the historical series needed for EIA`s energy models. Division is made for each energy type and end use sector. Nuclear electric power is included.

NONE

1996-10-01T23:59:59.000Z