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1

Refinement of Mg{sub 2}Si reinforcement in a commercial Al–20%Mg{sub 2}Si in-situ composite with bismuth, antimony and strontium  

SciTech Connect (OSTI)

Refinement by addition elements of Al–Mg{sub 2}Si alloys is known to result in a change of primary Mg{sub 2}Si morphology. In this paper, the effects of Bi, Sb and Sr on the characteristic parameters of Al–20%Mg{sub 2}Si in-situ composite have been investigated by computer aided cooling curve thermal analysis and microstructural inspection. Size, density and aspect ratio measurements showed that additions of 0.4 wt.% Bi, 0.8 wt.% Sb and 0.01 wt.% Sr refined the Mg{sub 2}Si reinforcement. Exceeding these concentrations, however, resulted in coarsening of Mg{sub 2}Si particles with no change in the morphology. The results also showed that addition elements caused a decrease in the nucleation and growth temperatures of Mg{sub 2}Si particles. The refining effect of Bi, Sb and Sr is likely to be related to the effect of oxide bifilms suspended in the composite melt as favored nucleation substrates for Mg{sub 2}Si particles. - Highlight: • 0.4 wt.%, 0.8 wt.% and 0.01 wt.% is the optimum content for Bi, Sb and Sr addition. • Exceeding optimum concentration resulted in the coarsening of reinforcements. • Nucleation and growth temperatures decrease with addition of Bi, Sb and Sr. • The refining effect of Bi, Sb and Sr is likely to be related to the oxide bifilms.

Nordin, Nur Azmah; Farahany, Saeed, E-mail: saeedfarahany@gmail.com; Ourdjini, Ali; Abu Bakar, Tuty Asma; Hamzah, Esah

2013-12-15T23:59:59.000Z

2

Refined blowups.  

E-Print Network [OSTI]

Categorical resolution of singularities has been constructed in arXiv:1212.6170. It proceeds by alternating two steps of seemingly different nature. We show how to use the formalism of filtered derived categories to combine the two steps into one. This results in a certain rather natural categorical refinement of the usual blowup of an algebraic variety in a closed subscheme.

D. Kaledin; A. Kuznetsov

3

Rietveld Refinement  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 Resource Program September Department ofRiehle. DorothyRefinement

4

Refined Hopf Link Revisited  

E-Print Network [OSTI]

We establish a relation between the refined Hopf link invariant and the S-matrix of the refined Chern-Simons theory. We show that the refined open string partition function corresponding to the Hopf link, calculated using the refined topological vertex, when expressed in the basis of Macdonald polynomials gives the S-matrix of the refined Chern-Simons theory.

Amer Iqbal; Can Kozçaz

2011-11-02T23:59:59.000Z

5

ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Bandwidth for Petroleum Refining Processes ITP Petroleum Refining: Energy Bandwidth for Petroleum Refining Processes bandwidth.pdf More Documents & Publications ITP Petroleum...

6

ITP Petroleum Refining: Profile of the Petroleum Refining Industry...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Profile of the Petroleum Refining Industry in California: California Industries of the Future Program ITP Petroleum Refining: Profile of the Petroleum Refining Industry in...

7

Spectral-element adaptive refinement  

E-Print Network [OSTI]

Spectral-element adaptive refinement magnetohydrodynamic simulations of the island coalescence;Abstract A recently developed spectral-element adaptive refinement incompressible magnetohydrodynamic (MHD statically refined and dynamically refined grids. The island coalescence instability is a fundamental MHD

Ng, Chung-Sang

8

The Refined Topological Vertex  

E-Print Network [OSTI]

We define a refined topological vertex which depends in addition on a parameter, which physically corresponds to extending the self-dual graviphoton field strength to a more general configuration. Using this refined topological vertex we compute, using geometric engineering, a two-parameter (equivariant) instanton expansion of gauge theories which reproduce the results of Nekrasov. The refined vertex is also expected to be related to Khovanov knot invariants.

Amer Iqbal; Can Kozcaz; Cumrun Vafa

2009-03-12T23:59:59.000Z

9

Biocatalysis in Oil Refining  

SciTech Connect (OSTI)

Biocatalysis in Oil Refining focuses on petroleum refining bioprocesses, establishing a connection between science and technology. The micro organisms and biomolecules examined for biocatalytic purposes for oil refining processes are thoroughly detailed. Terminology used by biologists, chemists and engineers is brought into a common language, aiding the understanding of complex biological-chemical-engineering issues. Problems to be addressed by the future R&D activities and by new technologies are described and summarized in the last chapter.

Borole, Abhijeet P [ORNL; Ramirez-Corredores, M. M. [BP Global Fuels Technology

2007-01-01T23:59:59.000Z

10

Renewable Energy Project Refinement Webinar  

Broader source: Energy.gov [DOE]

Attendees will become familiar with the three components of project refinement: project financing strategies, off-taker agreements, and vendor selection. Project refinement obstacles, particularly...

11

Refiners get petchems help  

SciTech Connect (OSTI)

The U.S.Refining Industry is facing hard times. Slow growth, tough environmental regulations, and fierce competition - especially in retail gasoline - have squeezed margins and prompted a series of mergers and acquisitions. The trend has affected the smallest and largest players, and a series of transactions over the past two years has created a new industry lineup. Among the larger companies, Mobil and Amoco are the latest to consider a refining merger. That follows recent plans by Ashland and Marathon to merge their refining businesses, and the decision by Shell, Texaco, and Saudi Aramco to combine some U.S. operations. Many of the leading independent refiners have increased their scale by acquiring refinery capacity. With refining still in the doldrums, more independents are taking a closer look at boosting production of petrochemicals, which offer high growth and, usually, better margins. That is being helped by the shift to refinery processes that favor the increased production of light olefins for alkylation and the removal of aromatics, providing opportunity to extract these materials for the petrochemical market. 5 figs., 3 tabs.

Wood, A.; Cornitius, T.

1997-06-11T23:59:59.000Z

12

Refining threshold resummations  

E-Print Network [OSTI]

We describe some recent refinements of the techniques of threshold resummation, with emphasis on the usefulness of dimensional regularization when applied to nonabelian exponentiation. Threshold resummation is now under theoretical control for DIS and electroweak annihilation cross sections all the way to the fourth tower of logarithms and up to corrections suppressed by powers of the threshold variable.

Eric Laenen; Lorenzo Magnea

2006-07-18T23:59:59.000Z

13

Issues in adaptive mesh refinement  

SciTech Connect (OSTI)

In this paper, we present an approach for a patch-based adaptive mesh refinement (AMR) for multi-physics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, and management of patches. Among the special features of this patch-based AMR are symmetry preserving, efficiency of refinement, special implementation offlux correction, and patch management in parallel computing environments. Here, higher efficiency of refinement means less unnecessarily refined cells for a given set of cells to be refined. To demonstrate the capability of the AMR framework, hydrodynamics simulations with many levels of refinement are shown in both two- and three-dimensions.

Dai, William Wenlong [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

14

A Theory of Program Refinement   

E-Print Network [OSTI]

We give a canonical program refinement calculus based on the lambda calculus and classical first-order predicate logic, and study its proof theory and semantics. The intention is to construct a metalanguage for refinement in which basic principles...

Denney, Ewen WKC

15

Worldwide refining and gas processing directory  

SciTech Connect (OSTI)

Statistics are presented on the following: US refining; Canada refining; Europe refining; Africa refining; Asia refining; Latin American refining; Middle East refining; catalyst manufacturers; consulting firms; engineering and construction; US gas processing; international gas processing; plant maintenance providers; process control and simulation systems; and trade associations.

NONE

1999-11-01T23:59:59.000Z

16

Refiner Acquisition Cost of Crude Oil - Composite  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromising ScienceRecent SRELRecyclingProjects &Lack of

17

Refiner Acquisition Cost of Crude Oil - Composite  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2007 10,998 9,933 10,998 10,643 10,998throughThousand CubicWashington Natural Gas Exports2.References

18

Refining the Elliptic Genus  

E-Print Network [OSTI]

We show how special forms of an $N=2$ Landau-Ginzburg potential directly imply the presence of an $N=2$ super-$W$ algebra. If the Landau-Ginzburg model has a super-$W$ algebra, we show how the elliptic genus can be refined so as to give much more complete information about the structure of the model. We study the super-$W_3$ model in some detail, and present some results and conjectures about more general models.

D. Nemeschansky; N. P. Warner

1994-03-30T23:59:59.000Z

19

Refines Efficiency Improvement  

SciTech Connect (OSTI)

Refinery processes that convert heavy oils to lighter distillate fuels require heating for distillation, hydrogen addition or carbon rejection (coking). Efficiency is limited by the formation of insoluble carbon-rich coke deposits. Heat exchangers and other refinery units must be shut down for mechanical coke removal, resulting in a significant loss of output and revenue. When a residuum is heated above the temperature at which pyrolysis occurs (340 C, 650 F), there is typically an induction period before coke formation begins (Magaril and Aksenova 1968, Wiehe 1993). To avoid fouling, refiners often stop heating a residuum before coke formation begins, using arbitrary criteria. In many cases, this heating is stopped sooner than need be, resulting in less than maximum product yield. Western Research Institute (WRI) has developed innovative Coking Index concepts (patent pending) which can be used for process control by refiners to heat residua to the threshold, but not beyond the point at which coke formation begins when petroleum residua materials are heated at pyrolysis temperatures (Schabron et al. 2001). The development of this universal predictor solves a long standing problem in petroleum refining. These Coking Indexes have great potential value in improving the efficiency of distillation processes. The Coking Indexes were found to apply to residua in a universal manner, and the theoretical basis for the indexes has been established (Schabron et al. 2001a, 2001b, 2001c). For the first time, a few simple measurements indicates how close undesired coke formation is on the coke formation induction time line. The Coking Indexes can lead to new process controls that can improve refinery distillation efficiency by several percentage points. Petroleum residua consist of an ordered continuum of solvated polar materials usually referred to as asphaltenes dispersed in a lower polarity solvent phase held together by intermediate polarity materials usually referred to as resins. The Coking Indexes focus on the amount of these intermediate polarity species since coke formation begins when these are depleted. Currently the Coking Indexes are determined by either titration or solubility measurements which must be performed in a laboratory. In the current work, various spectral, microscopic, and thermal techniques possibly leading to on-line analysis were explored for measuring the Coking Indexes.

WRI

2002-05-15T23:59:59.000Z

20

Refining thick subcategory theorems.  

E-Print Network [OSTI]

We use a $K$-theory recipe of Thomason to obtain classifications of triangulated subcategories via refining some standard thick subcategory theorems. We apply this recipe to the full subcategories of finite objects in the derived categories of rings and the stable homotopy category of spectra. This gives, in the derived categories, a complete classification of the triangulated subcategories of perfect complexes over some commutative rings. In the stable homotoy category of spectra we obtain only a partial classification of the triangulated subcategories of the finite $p$-local spectra. We use this partial classification to study the lattice of triangulated subcategories. This study gives some new evidence to a conjecture of Adams that the thick subcategory $\\C_2$ can be generated by iterated cofiberings of the Smith-Toda complex. We also discuss several consequences of these classification theorems.

Sunil K. Chebolu.

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Modern refining and petrochemical equipment  

SciTech Connect (OSTI)

Petroleum refining and petroleum chemistry are characterized by a whole set of manufacturing processes and methods, whose application depends on the initial raw material and the final products. Therefore, refining and petrochemical equipment has many different operational principles, design solutions, and materials. The activities of the Russian Petroleum Industry are discussed.

Pugach, V.V.

1995-07-01T23:59:59.000Z

22

Refinement of Inequalities among Means  

E-Print Network [OSTI]

In this paper we shall consider some famous means such as arithmetic, harmonic, geometric, root-square means, etc. Some new means recently studied are also presented. Different kinds of refinement of inequalities among these means are given.

Inder Jeet Taneja

2005-07-12T23:59:59.000Z

23

Generic refinements for behavioral specifications   

E-Print Network [OSTI]

This thesis investigates the properties of generic refinements of behavioral specifications. At the base of this investigation stands the view from algebraic specification that abstract data types can be modeled as ...

Petria, Marius

2011-01-01T23:59:59.000Z

24

Model Refinement for Economic Assessments of  

E-Print Network [OSTI]

Model Refinement for Economic Assessments of Hawai`i Clean Energy Policies: Scenario Selection agency thereof. #12;Model Refinement for Economic Assessments of Hawaii Clean Energy Policies Selection

25

NORTHEAST REGIONAL REFINED PETROLEUM PRODUCT RESERVE | Department...  

Broader source: Energy.gov (indexed) [DOE]

NORTHEAST REGIONAL REFINED PETROLEUM PRODUCT RESERVE NORTHEAST REGIONAL REFINED PETROLEUM PRODUCT RESERVE The Northeast region of the U.S. is particularly vulnerable to gasoline...

26

Refining the shifted topological vertex  

SciTech Connect (OSTI)

We study aspects of the refining and shifting properties of the 3d MacMahon function C{sub 3}(q) used in topological string theory and BKP hierarchy. We derive the explicit expressions of the shifted topological vertex S{sub {lambda}}{sub {mu}}{sub {nu}}(q) and its refined version T{sub {lambda}}{sub {mu}}{sub {nu}}(q,t). These vertices complete results in literature.

Drissi, L. B.; Jehjouh, H.; Saidi, E. H. [Faculte des Sciences, Laboratory/UFR-Physique des Hautes Energies, Rabat, 1014 (Morocco); Groupement National de Physique des Hautes Energies (GNPHE), Siege focal:FS, Rabat, 1014 (Morocco)

2009-01-15T23:59:59.000Z

27

DSm Vector Spaces of Refined Labels  

E-Print Network [OSTI]

In this book the authors introduce the notion of DSm vector spaces of refined labels. They also realize the refined labels as a plane and a n-dimensional space. Further, using these refined labels, several algebraic structures are defined. Finally DSm semivector space or refined labels is described. Authors also propose some research problems.

W. B. Vasantha Kandasamy; Florentin Smarandache

2011-12-02T23:59:59.000Z

28

Conformal refinement of unstructured quadrilateral meshes  

SciTech Connect (OSTI)

We present a multilevel adaptive refinement technique for unstructured quadrilateral meshes in which the mesh is kept conformal at all times. This means that the refined mesh, like the original, is formed of only quadrilateral elements that intersect strictly along edges or at vertices, i.e., vertices of one quadrilateral element do not lie in an edge of another quadrilateral. Elements are refined using templates based on 1:3 refinement of edges. We demonstrate that by careful design of the refinement and coarsening strategy, we can maintain high quality elements in the refined mesh. We demonstrate the method on a number of examples with dynamically changing refinement regions.

Garmella, Rao [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

29

Romanian refining industry assesses restructuring  

SciTech Connect (OSTI)

The Romanian crude oil refining industry, as all the other economic sectors, faces the problems accompanying the transition from a centrally planned economy to a market economy. At present, all refineries have registered as joint-stock companies and all are coordinated and assisted by Rafirom S.A., from both a legal and a production point of view. Rafirom S.A. is a joint-stock company that holds shares in refineries and other stock companies with activities related to oil refining. Such activities include technological research, development, design, transportation, storage, and domestic and foreign marketing. This article outlines the market forces that are expected to: drive rationalization and restructuring of refining operations and define the targets toward which the reconfigured refineries should strive.

Tanasescu, D.G. (General Consulting and Procurement, Poolgec Ltd., Bucharest (RO))

1991-12-30T23:59:59.000Z

30

Assembling, analyzing, refining, and cataloging molecular interaction network  

E-Print Network [OSTI]

ASSEMBLING, ANALYZING, REFINING, AND CATALOGING MOLECULARASSEMBLING, ANALYZING, REFINING, AND CATALOGING MOLECULAR

Mak, Huajiang Craig

2008-01-01T23:59:59.000Z

31

Executive functions in schizophrenia : defining and refining the constructs  

E-Print Network [OSTI]

Schizophrenia: Defining and Refining the Constructs By Gauriin Schizophrenia: Defining and Refining the Constructs A

Savla, Gauri Nayak

2009-01-01T23:59:59.000Z

32

Influence of Alloy and Solidification Parameters on Grain Refinement in Aluminum Weld Metal due to Inoculation  

SciTech Connect (OSTI)

The goals are: (1) Establish how much Ti/B grain refiner is need to completely refine aluminum weld metal for different alloys and different welding conditions; (2) Characterize how alloy composition and solidification parameters affect weld metal grain refinement; and (3) Apply relevant theory to understand observed behavior. Conclusions are: (1) additions of Ti/B grain refiner to weld metal in Alloys 1050, 5083, and 6082 resulted in significant grain refinement; (2) grain refinement was more effective in GTAW than LBW, resulting in finer grains at lower Ti content - reason is limited time available for equiaxed grain growth in LBW (inability to occlude columnar grain growth); (3) welding travel speed did not markedly affect grain size within GTAW and LBW clusters; and (4) application of Hunt CET analysis showed experimental G to be on the order of the critical G{sub CET}; G{sub CET} was consistently higher for GTAW than for LBW.

Schempp, Philipp [BAM, Germany; Tang, Z. [BIAS, Germany; Cross, Carl E. [Los Alamos National Laboratory; Seefeld, T. [BIAS, Germany; Pittner, A. [BAM, Germany; Rethmeier, M. [BAM, Germany

2012-06-28T23:59:59.000Z

33

TreeRefiner: A Tool for Refining a Multiple Alignment on a Phylogenetic Tree  

E-Print Network [OSTI]

TreeRefiner: A Tool for Refining a Multiple Alignment on a Phylogenetic Tree Aswath Manohar@cs.stanford.edu, serafim@cs.stanford.edu Abstract We present TreeRefiner, a tool for refining multiple alignments of biological sequences. Given a multiple alignment, a phylogenetic tree, and scoring parameters as input, TreeRefiner

Batzoglou, Serafim

34

Biomass Compositional Analysis Laboratory (Fact Sheet), National...  

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

At the Biomass Compositional Analysis Laboratory, NREL scientists have more than 20 years of experience supporting the biomass conversion industry. They develop, refine, and...

35

Method for refining contaminated iridium  

DOE Patents [OSTI]

Contaminated iridium is refined by alloying it with an alloying agent selected from the group consisting of manganese and an alloy of manganese and copper, and then dissolving the alloying agent from the formed alloy to provide a purified iridium powder.

Heshmatpour, B.; Heestand, R.L.

1982-08-31T23:59:59.000Z

36

Method for refining contaminated iridium  

DOE Patents [OSTI]

Contaminated iridium is refined by alloying it with an alloying agent selected from the group consisting of manganese and an alloy of manganese and copper, and then dissolving the alloying agent from the formed alloy to provide a purified iridium powder.

Heshmatpour, Bahman (Waltham, MA); Heestand, Richard L. (Oak Ridge, TN)

1983-01-01T23:59:59.000Z

37

Refining the Shifted Topological Vertex  

E-Print Network [OSTI]

We study aspects of the refining and shifting properties of the 3d MacMahon function $\\mathcal{C}_{3}(q) $ used in topological string theory and BKP hierarchy. We derive the explicit expressions of the shifted topological vertex $\\mathcal{S}_{\\lambda \\mu \

Lalla Btissam Drissi; Houda Jehjouh; El Hassan Saidi

2008-12-02T23:59:59.000Z

38

Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints.  

E-Print Network [OSTI]

??Petroleum refining processes provide the daily requirements of energy for the global market. Each refining process produces wastes that have the capacity to harm the… (more)

Ali Yusuf, Yusuf

2013-01-01T23:59:59.000Z

39

A design flow based on modular refinement  

E-Print Network [OSTI]

We propose a practical methodology based on modular refinement to design complex systems. The methodology relies on modules with latency-insensitive interfaces so that the refinements can change the timing contract of a ...

Dave, Nirav H.

40

Sharp Retrenchment, Modulated Refinement and Simulation  

E-Print Network [OSTI]

retrenchment is introduced and briefly justified informally, as a liberalisation of refinement. In sharp as a liberalisation of the notion of refinement, whose purpose was to enable more of the informal aspects of de

Banach, Richard

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Firing of pulverized solvent refined coal  

DOE Patents [OSTI]

An air-purged burner for the firing of pulverized solvent refined coal is constructed and operated such that the solvent refined coal can be fired without the coking thereof on the burner components. The air-purged burner is designed for the firing of pulverized solvent refined coal in a tangentially fired boiler.

Derbidge, T. Craig (Sunnyvale, CA); Mulholland, James A. (Chapel Hill, NC); Foster, Edward P. (Macungie, PA)

1986-01-01T23:59:59.000Z

42

Refinement in cases of Twinning Lothar Esser  

E-Print Network [OSTI]

Refinement in cases of Twinning Lothar Esser National Cancer Institute Despite working in crystallography for a number of years, it was only recently that I was asked to refine a structure against twinned was twinned using a model of > 99% sequence identity. As the refinement did not progress as it should

43

Arnold Schwarzenegger REFINING ESTIMATES OF WATER-  

E-Print Network [OSTI]

Arnold Schwarzenegger Governor REFINING ESTIMATES OF WATER- RELATED ENERGY USE IN CALIFORNIA Energy Technologies · Transportation Refining Estimates of WaterRelated Energy Use in California is the final report for the Refining Estimates of EnergyRelated Energy Use in California project (contract

44

Solvent dramatically affects protein structure refinement  

E-Print Network [OSTI]

Solvent dramatically affects protein structure refinement Gaurav Chopraa , Christopher M. Summab structure), also known as the protein structure refinement problem. It has been shown that improve- ment in protein structure refinement. Molecular dynamics in explicit sol- vent and energy minimization in both

Summa, Christopher M.

45

Energy Efficiency Improvement in the Petroleum Refining Industry  

E-Print Network [OSTI]

Manufacturing and Petroleum Refining Industries. Office of1994. Petroleum Refining: Technology and Economics, 3 rdProfile of the U.S. Petroleum Refining Industry, Office of

Worrell, Ernst; Galitsky, Christina

2005-01-01T23:59:59.000Z

46

ITP Petroleum Refining: Impacts of Condition Assessment on Energy...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

ITP Petroleum Refining: Impacts of Condition Assessment on Energy Use: Selected Applications in Chemicals Processing and Petroleum Refining ITP Petroleum Refining: Impacts of...

47

ITP Petroleum Refining: Energy and Environmental Profile of the...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Environmental Profile of the U.S. Petroleum Refining Industry (November 2007) ITP Petroleum Refining: Energy and Environmental Profile of the U.S. Petroleum Refining Industry...

48

Refined matrix models from BPS counting  

E-Print Network [OSTI]

We construct a free fermion and matrix model representation of refined BPS generating functions of D2 and D0 branes bound to a single D6 brane, in a class of toric manifolds without compact four-cycles. In appropriate limit we obtain a matrix model representation of refined topological string amplitudes. We consider a few explicit examples which include a matrix model for the refined resolved conifold, or equivalently five-dimensional U(1) gauge theory, as well as a matrix representation of the refined MacMahon function. Matrix models which we construct have ordinary unitary measure, while their potentials are modified to incorporate the effect of the refinement.

Piotr Su?kowski

2011-08-25T23:59:59.000Z

49

Petroleum Refining Energy Use in Relation to Fuel Products Made  

E-Print Network [OSTI]

In recent years crude oils available to refiners have required more energy to refine and refiners have adjusted their processes to obtain better energy efficiency. In addition, the shift to lead-free gasoline has led to refining adjustments...

White, J. R.; Marshall, J. F.; Shoemaker, G. L.; Smith, R. B.

1983-01-01T23:59:59.000Z

50

Representations of finite groups The Alperin-McKay refinement  

E-Print Network [OSTI]

Representations of finite groups The Alperin-McKay refinement The Isaacs-Navarro refinements The Mc-McKay refinement The Isaacs-Navarro refinements The basics Some history The McKay conjecture (for now) Let G groups The Alperin-McKay refinement The Isaacs-Navarro refinements The basics Some history The Mc

Cossey, James P.

51

More refined enumerations of alternating sign matrices  

E-Print Network [OSTI]

We study a further refinement of the standard refined enumeration of alternating sign matrices (ASMs) according to their first two rows instead of just the first row, and more general "d-refined" enumerations of ASMs according to the first d rows. For the doubly-refined case of d=2, we derive a system of linear equations satisfied by the doubly-refined enumeration numbers A_{n,i,j} that enumerate such matrices. We give a conjectural explicit formula for A_{n,i,j} and formulate several other conjectures about the sufficiency of the linear equations to determine the A_{n,i,j}'s and about an extension of the linear equations to the general d-refined enumerations.

Ilse Fischer; Dan Romik

2009-04-15T23:59:59.000Z

52

Refined Black Hole Ensembles and Topological Strings  

E-Print Network [OSTI]

We formulate a refined version of the Ooguri-Strominger-Vafa (OSV) conjecture. The OSV conjecture that Z_{BH} = |Z_{top}|^2 relates the BPS black hole partition function to the topological string partition function Z_{top}. In the refined conjecture, Z_{BH} is the partition function of BPS black holes counted with spin, or more precisely the protected spin character. Z_{top} becomes the partition function of the refined topological string, which is itself an index. Both the original and the refined conjecture are examples of large N duality in the 't Hooft sense. The refined conjecture applies to non-compact Calabi-Yau manifolds only, so the black holes are really BPS particles with large entropy, of order N^2. The refined OSV conjecture states that the refined BPS partition function has a large N dual which is captured by the refined topological string. We provide evidence that the conjecture holds by studying local Calabi-Yau threefolds consisting of line bundles over a genus g Riemann surface. We show that the refined topological string partition function on these geometries is computed by a two-dimensional TQFT. We also study the refined black hole partition function arising from N D4 branes on the Calabi-Yau, and argue that it reduces to a (q,t)-deformed version of two-dimensional SU(N) Yang-Mills. Finally, we show that in the large N limit this theory factorizes to the square of the refined topological string in accordance with the refined OSV conjecture.

Mina Aganagic; Kevin Schaeffer

2012-10-05T23:59:59.000Z

53

Reaping Energy Savings from Petroleum Refining  

E-Print Network [OSTI]

REAPING ENERGY SAVINGS FROM PETROLEUM REFINING Alan Deng, Project Manager, San Francisco, CA, Ron Cascone, Project Manager, White Plains, NY, Nexant, Inc. ABSTRACT The refining industry is one of the largest energy users in Pacific Gas... years’ energy conservation and demand-side management program participation. The PG&E’s refinery energy efficiency program (REEP) is designed to address key market barriers and tap into the savings potential from energy-intensive refining processes...

Deng, A.; Cascone, R.

2006-01-01T23:59:59.000Z

54

Pneumatic conveying of pulverized solvent refined coal  

DOE Patents [OSTI]

A method for pneumatically conveying solvent refined coal to a burner under conditions of dilute phase pneumatic flow so as to prevent saltation of the solvent refined coal in the transport line by maintaining the transport fluid velocity above approximately 95 ft/sec.

Lennon, Dennis R. (Allentown, PA)

1984-11-06T23:59:59.000Z

55

North Dakota Refining Capacity Study  

SciTech Connect (OSTI)

According to a 2008 report issued by the United States Geological Survey, North Dakota and Montana have an estimated 3.0 to 4.3 billion barrels of undiscovered, technically recoverable oil in an area known as the Bakken Formation. With the size and remoteness of the discovery, the question became 'can a business case be made for increasing refining capacity in North Dakota?' And, if so what is the impact to existing players in the region. To answer the question, a study committee comprised of leaders in the region's petroleum industry were brought together to define the scope of the study, hire a consulting firm and oversee the study. The study committee met frequently to provide input on the findings and modify the course of the study, as needed. The study concluded that the Petroleum Area Defense District II (PADD II) has an oversupply of gasoline. With that in mind, a niche market, naphtha, was identified. Naphtha is used as a diluent used for pipelining the bitumen (heavy crude) from Canada to crude markets. The study predicted there will continue to be an increase in the demand for naphtha through 2030. The study estimated the optimal configuration for the refinery at 34,000 barrels per day (BPD) producing 15,000 BPD of naphtha and a 52 percent refinery charge for jet and diesel yield. The financial modeling assumed the sponsor of a refinery would invest its own capital to pay for construction costs. With this assumption, the internal rate of return is 9.2 percent which is not sufficient to attract traditional investment given the risk factor of the project. With that in mind, those interested in pursuing this niche market will need to identify incentives to improve the rate of return.

Dennis Hill; Kurt Swenson; Carl Tuura; Jim Simon; Robert Vermette; Gilberto Marcha; Steve Kelly; David Wells; Ed Palmer; Kuo Yu; Tram Nguyen; Juliam Migliavacca

2011-01-05T23:59:59.000Z

56

Firing of pulverized solvent refined coal  

DOE Patents [OSTI]

A burner for the firing of pulverized solvent refined coal is constructed and operated such that the solvent refined coal can be fired successfully without any performance limitations and without the coking of the solvent refined coal on the burner components. The burner is provided with a tangential inlet of primary air and pulverized fuel, a vaned diffusion swirler for the mixture of primary air and fuel, a center water-cooled conical diffuser shielding the incoming fuel from the heat radiation from the flame and deflecting the primary air and fuel steam into the secondary air, and a watercooled annulus located between the primary air and secondary air flows.

Lennon, Dennis R. (Allentown, PA); Snedden, Richard B. (McKeesport, PA); Foster, Edward P. (Macungie, PA); Bellas, George T. (Library, PA)

1990-05-15T23:59:59.000Z

57

Refining and Extending the Business Model with Information Technology: Dell Computer Corporation  

E-Print Network [OSTI]

REFINING ANDEXTENDING THE REFINING AND EXTENDING THE BUSINESS MODELfinal version 5-99.doc REFINING AND EXTENDING THE BUSINESS

Kraemer, Kenneth L; Dedrick, Jason; Yamashiro, Sandra

1999-01-01T23:59:59.000Z

58

Adaptive Mesh Refinement and Relativistic MHD  

E-Print Network [OSTI]

We solve the general relativistic magnetohydrodynamics equations using distributed parallel adaptive mesh refinement. We discuss strong scaling tests of the code, and present evolutions of Michel accretion and a TOV star.

David Neilsen; Eric W. Hirschmann; Matthew Anderson; Steven L. Liebling

2007-02-06T23:59:59.000Z

59

Introducing Reference Semantics via Refinement Graeme Smith  

E-Print Network [OSTI]

Introducing Reference Semantics via Refinement Graeme Smith Software Verification Research Centre, University of Queensland, Australia smith@svrc.uq.edu.au Abstract. Two types of semantics have been given

Smith, Graeme

60

Diameter-Refined Metallic Carbon Nanotubes as Optically Tunable...  

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

Diameter-Refined Metallic Carbon Nanotubes as Optically Tunable Transparent Conductors Home > Research > ANSER Research Highlights > Diameter-Refined Metallic Carbon Nanotubes as...

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

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

Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1995...

62

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1997...

63

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Gasoline and Diesel Fuel Update (EIA)

Gallons per Day Motor Gasoline No. 2 Distillate Residual Fuel Oil 5. U.S. Refiner Wholesale Petroleum Product Volumes Figure Percentages of Refiner Wholesale Volumes 1996...

64

Improving NMR Protein Structure Quality by Rosetta Refinement...  

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

NMR Protein Structure Quality by Rosetta Refinement: A Molecular Replacement Study. Improving NMR Protein Structure Quality by Rosetta Refinement: A Molecular Replacement Study....

65

The 1987 refining and petrochemical technology yearbook  

SciTech Connect (OSTI)

This annual covers the latest in refining and petrochemical technology written by the experts in the field. Opening with a foreword by Richard Corbett, Refining and Petrochemical Editior of the Oil and Gas Journal. The annual includes nearly 100 articles from the 1986 issues of the Oil and Gas Journal, comprising a collection of new technical information, methods of analysis, forecasts and trends in such subject areas as plants, fuels, gasolines, coking, processing, contents, hydrocracking, equipment, catalysts, and petrochemicals.

Not Available

1987-01-01T23:59:59.000Z

66

Green Petroleum Refining -Mathematical Models for Optimizing Petroleum Refining Under Emission Constraints  

E-Print Network [OSTI]

Green Petroleum Refining - Mathematical Models for Optimizing Petroleum Refining Under Emission understand that my thesis may be made electronically available to the public. #12;iii Abstract Petroleum and treating options for petroleum refinery waste streams. The performance of the developed model

Anderson, Charles H.

67

Refined Topological Strings and Toric Calabi-Yau Threefolds  

E-Print Network [OSTI]

The refined topological vertex formulation computes the refined topological string partition function for non-compact toric Calabi-Yau threefolds which engineer N=2 supersymmetric gauge theories. For geometries such as the local P^2, which do not give rise to gauge theories, the refined topological vertex alone is not sufficient for directly calculating the refined amplitudes. In this paper, we extend the refined topological vertex formalism and propose a complementary new vertex which, together with the refined topological vertex, determines the refined amplitudes for all toric Calabi-Yau threefolds.

Amer Iqbal; Can Kozcaz

2012-10-10T23:59:59.000Z

68

Refined Topological Vertex and Instanton Counting  

E-Print Network [OSTI]

It has been proposed recently that topological A-model string amplitudes for toric Calabi-Yau 3-folds in non self-dual graviphoton background can be caluculated by a diagrammatic method that is called the ``refined topological vertex''. We compute the extended A-model amplitudes for SU(N)-geometries using the proposed vertex. If the refined topological vertex is valid, these computations should give rise to the Nekrasov's partition functions of N=2 SU(N) gauge theories via the geometric engineering. In this article, we verify the proposal by confirming the equivalence between the refined A-model amplitude and the K-theoretic version of the Nekrasov's partition function by explicit computation.

Masato Taki

2007-12-26T23:59:59.000Z

69

Lattice Refining LQC and the Matter Hamiltonian  

E-Print Network [OSTI]

In the context of loop quantum cosmology, we parametrise the lattice refinement by a parameter, $A$, and the matter Hamiltonian by a parameter, $\\delta$. We then solve the Hamiltonian constraint for both a self-adjoint, and a non-self-adjoint Hamiltonian operator. Demanding that the solutions for the wave-functions obey certain physical restrictions, we impose constraints on the two-dimensional, $(A,\\delta)$, parameter space, thereby restricting the types of matter content that can be supported by a particular lattice refinement model.

William Nelson; Mairi Sakellariadou

2007-08-30T23:59:59.000Z

70

An independent refiners approach to RFG  

SciTech Connect (OSTI)

This report was presented by Mike Czeskleba,Senior Business Analyst for Ashland Petroleum Company in Ashland, Kentucky. Ashland is one of the largest independent refiners and a leading marketer of gasoline and other petroleum products in the U.S. The issues addressed in this report concern the use of ethanol as a gasoline extender and renewable oxygenate, and its use in Reformulated Gasolines (RFG). The impact of Clean Air Act requirements for 1995 and beyond on petroleum refiners and producers is discussed. Some of the strategies which Ashland Petroleum Company is using to meet regulation requirements is also presented.

Czeskleba, M.

1994-12-31T23:59:59.000Z

71

Relativistic MHD with Adaptive Mesh Refinement  

E-Print Network [OSTI]

This paper presents a new computer code to solve the general relativistic magnetohydrodynamics (GRMHD) equations using distributed parallel adaptive mesh refinement (AMR). The fluid equations are solved using a finite difference Convex ENO method (CENO) in 3+1 dimensions, and the AMR is Berger-Oliger. Hyperbolic divergence cleaning is used to control the $\

Matthew Anderson; Eric Hirschmann; Steven L. Liebling; David Neilsen

2006-10-11T23:59:59.000Z

72

Focus on Venezuelan heavy crude: refining margins  

SciTech Connect (OSTI)

Of six crudes refined in the US Gulf Coast, heavy Venezuelan crude Lagunillas (15/sup 0/ API) provides the best margin per barrel. Data for end of December 1983 and the first three weeks of January show that margins on all crudes are on the rise in this market, due to a turnaround in product prices. The lighter crudes are showing the greatest increase in Gross Product Worth. This is having a modest shrinking effect on the margin differential between light and heavy crudes in this market. The domestic crude West Texas Intermediate, at 40/sup 0/ API, provides the highest GPW in this crude slate sample, over US $31 per barrel, compared to GPW of under US $28 per barrel for Lagunillas. Still, as Lagunillas cost about US $8 less than does WTI, refiners with sufficient residue conversion capacity can be earning about US $3.50 more in margin per barrel than they can with WTI. Although few refiners would be using a 15/sup 0/ API crude exclusively for any length of time, heavier oil's inclusion in modern refiners' diets is enhancing their competitive position more than any other single factor. This issue of Energy Detente presents the fuel price/tax series and industrial fuel prices for January 1984 for countries of the Western Hemisphere.

Not Available

1984-01-25T23:59:59.000Z

73

Refiners boost crude capacity; Petrochemical production up  

SciTech Connect (OSTI)

Continuing demand strength in refined products and petrochemical markets caused refiners to boost crude-charging capacity slightly again last year, and petrochemical producers to increase production worldwide. Product demand strength is, in large part, due to stable product prices resulting from a stabilization of crude oil prices. Crude prices strengthened somewhat in 1987. That, coupled with fierce product competition, unfortunately drove refining margins negative in many regions of the U.S. during the last half of 1987. But with continued strong demand for gasoline, and an increased demand for higher octane gasoline, margins could turn positive by 1989 and remain so for a few years. U.S. refiners also had to have facilities in place to meet the final requirements of the U.S. Environmental Protection Agency's lead phase-down rules on Jan. 1, 1988. In petrochemicals, plastics demand dept basic petrochemical plants at good utilization levels worldwide. U.S. production of basics such as ethylene and propylene showed solid increases. Many of the derivatives of the basic petrochemical products also showed good production gains. Increased petrochemical production and high plant utilization rates didn't spur plant construction projects, however. Worldwide petrochemical plant projects declined slightly from 1986 figures.

Corbett, R.A.

1988-03-21T23:59:59.000Z

74

Transforming and Refining Abstract Constraint Specifications  

E-Print Network [OSTI]

Transforming and Refining Abstract Constraint Specifications Alan M. Frisch1 , Brahim Hnich2 , Ian choose model transformations to reduce greatly the amount of effort that is required to solve a problem by systematic search. It is a consid- erable challenge to automate such transformations. A problem may be viewed

Walsh, Toby

75

Refining industry trends: Europe and surroundings  

SciTech Connect (OSTI)

The European refining industry, along with its counterparts, is struggling with low profitability due to excess primary and conversion capacity, high operating costs and impending decisions of stringent environmental regulations that will require significant investments with hard to justify returns. This region was also faced in the early 1980s with excess capacity on the order of 4 MMb/d and satisfying the {open_quotes}at that point{close_quotes} demand by operating at very low utilization rates (60%). As was the case in the US, the rebalancing of the capacity led to the closure of some 51 refineries. Since the early 1990s, the increase in demand growth has essentially balanced the capacity threshold and utilization rates are settled around the 90% range. During the last two decades, the major oil companies have reduced their presence in the European refining sector, giving some state oil companies and producing countries the opportunity to gain access to the consumer market through the purchase of refining capacity in various countries-specifically, Kuwait in Italy; Libya and Venezuela in Germany; and Norway in other areas of Scandinavia. Although the market share for this new cast of characters remains small (4%) relative to participation by the majors (35%), their involvement in the European refining business set the foundation whereby US independent refiners relinquished control over assets that could not be operated profitably as part of a previous vertically integrated structure, unless access to the crude was ensured. The passage of time still seems to render this model valid.

Guariguata, U.G.

1997-05-01T23:59:59.000Z

76

Biomass Compositional Analysis Laboratory (Fact Sheet)  

SciTech Connect (OSTI)

At the Biomass Compositional Analysis Laboratory, NREL scientists have more than 20 years of experience supporting the biomass conversion industry. They develop, refine, and validate analytical methods to determine the chemical composition of biomass samples before, during, and after conversion processing. These high-quality compositional analysis data are used to determine feedstock compositions as well as mass balances and product yields from conversion processes.

Not Available

2014-07-01T23:59:59.000Z

77

phenix.refine: crystallographic structure refinement in PHENIX Pavel V. Afonine, Ralf W. Grosse-Kunstleve, Peter H. Zwart, Thomas C. Terwilliger, Nigel  

E-Print Network [OSTI]

phenix.refine: crystallographic structure refinement in PHENIX Pavel V. Afonine, Ralf W. Grosse of automation and robustness in structure refinement. Their implementation in phenix.refine ­ state-of-the-art refinement module of PHENIX package ­ resulted in a complete set of tools that cover most of refinement needs

78

Grain Refinement of Permanent Mold Cast Copper Base Alloys  

SciTech Connect (OSTI)

Grain refinement is a well established process for many cast and wrought alloys. The mechanical properties of various alloys could be enhanced by reducing the grain size. Refinement is also known to improve casting characteristics such as fluidity and hot tearing. Grain refinement of copper-base alloys is not widely used, especially in sand casting process. However, in permanent mold casting of copper alloys it is now common to use grain refinement to counteract the problem of severe hot tearing which also improves the pressure tightness of plumbing components. The mechanism of grain refinement in copper-base alloys is not well understood. The issues to be studied include the effect of minor alloy additions on the microstructure, their interaction with the grain refiner, effect of cooling rate, and loss of grain refinement (fading). In this investigation, efforts were made to explore and understand grain refinement of copper alloys, especially in permanent mold casting conditions.

M.Sadayappan; J.P.Thomson; M.Elboujdaini; G.Ping Gu; M. Sahoo

2005-04-01T23:59:59.000Z

79

Hardware/Software Co-Design via Specification Refinement  

E-Print Network [OSTI]

. The Rosetta refinement capability extends this by allowing a system's functional behavior and its implementation details to be described separately. The Rosetta Refinement Tool combines the functional behavior and the implementation details to form a system...

Peck, Wesley Graham

2011-12-31T23:59:59.000Z

80

5.067 Crystal Structure Refinement, Fall 2007  

E-Print Network [OSTI]

This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and ...

Mueller, Peter

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

5.841 Crystal Structure Refinement, Fall 2006  

E-Print Network [OSTI]

This course in crystal structure refinement examines the practical aspects of crystal structure determination from data collection strategies to data reduction and basic and advanced refinement problems of organic and ...

Mueller, Peter

82

Refined Cigar and Omega-deformed Conifold  

E-Print Network [OSTI]

Antoniadis et al proposed a relation between the Omega-deformation and refined correlation functions of the topological string theory. We investigate the proposal for the deformed conifold geometry from a non-compact Gepner model approach. The topological string theory on the deformed conifold has a dual description in terms of the c=1 non-critical string theory at the self-dual radius, and the Omega-deformation yields the radius deformation. We show that the refined correlation functions computed from the twisted SL(2,R)/U(1) Kazama-Suzuki coset model at level k=1 have direct c=1 non-critical string theory interpretations. After subtracting the leading singularity to procure the 1PI effective action, we obtain the agreement with the proposal.

Yu Nakayama

2010-07-30T23:59:59.000Z

83

In quantum gravity, summing is refining  

E-Print Network [OSTI]

In perturbative QED, the approximation is improved by summing more Feynman graphs; in non-perturbative QCD, by refining the lattice. Here we observe that in quantum gravity the two procedures may well be the same. We outline the combinatorial structure of spinfoam quantum gravity, define the continuum limit, and show that under general conditions refining foams is the same as summing over them. The conditions bear on the cylindrical consistency of the spinfoam amplitudes and on the presence of appropriate combinatorial factors, related to the implementation of diffeomorphisms invariance. Intuitively, the sites of the lattice are points of space: these are themselves quanta of the gravitational field, and thus a lattice discretization is also a Feynman history of quanta.

Carlo Rovelli; Matteo Smerlak

2011-05-03T23:59:59.000Z

84

Parabolic refined invariants and Macdonald polynomials  

E-Print Network [OSTI]

A string theoretic derivation is given for the conjecture of Hausel, Letellier, and Rodriguez-Villegas on the cohomology of character varieties with marked points. Their formula is identified with a refined BPS expansion in the stable pair theory of a local root stack, generalizing previous work of the first two authors in collaboration with G. Pan. Haiman's geometric construction for Macdonald polynomials is shown to emerge naturally in this context via geometric engineering. In particular this yields a new conjectural relation between Macdonald polynomials and refined local orbifold curve counting invariants. The string theoretic approach also leads to a new spectral cover construction for parabolic Higgs bundles in terms of holomorphic symplectic orbifolds.

Chuang, Wu-yen; Donagi, Ron; Pantev, Tony

2013-01-01T23:59:59.000Z

85

Dinosaurs can fly -- High performance refining  

SciTech Connect (OSTI)

High performance refining requires that one develop a winning strategy based on a clear understanding of one`s position in one`s company`s value chain; one`s competitive position in the products markets one serves; and the most likely drivers and direction of future market forces. The author discussed all three points, then described measuring performance of the company. To become a true high performance refiner often involves redesigning the organization as well as the business processes. The author discusses such redesigning. The paper summarizes ten rules to follow to achieve high performance: listen to the market; optimize; organize around asset or area teams; trust the operators; stay flexible; source strategically; all maintenance is not equal; energy is not free; build project discipline; and measure and reward performance. The paper then discusses the constraints to the implementation of change.

Treat, J.E. [Booz-Allen and Hamilton, Inc., San Francisco, CA (United States)

1995-09-01T23:59:59.000Z

86

Using supercritical fluids to refine hydrocarbons  

DOE Patents [OSTI]

This is a method to reactively refine hydrocarbons, such as heavy oils with API gravities of less than 20.degree. and bitumen-like hydrocarbons with viscosities greater than 1000 cp at standard temperature and pressure using a selected fluid at supercritical conditions. The reaction portion of the method delivers lighter weight, more volatile hydrocarbons to an attached contacting device that operates in mixed subcritical or supercritical modes. This separates the reaction products into portions that are viable for use or sale without further conventional refining and hydro-processing techniques. This method produces valuable products with fewer processing steps, lower costs, increased worker safety due to less processing and handling, allow greater opportunity for new oil field development and subsequent positive economic impact, reduce related carbon dioxide, and wastes typical with conventional refineries.

Yarbro, Stephen Lee

2014-11-25T23:59:59.000Z

87

Improve corrosion control in refining processes  

SciTech Connect (OSTI)

New guidelines show how to control corrosion and environmental cracking of process equipment when processing feedstocks containing sulfur and/or naphthenic acids. To be cost competitive refiners must be able to process crudes of opportunity. These feedstocks when processed under high temperatures and pressures and alkaline conditions can cause brittle cracks and blisters in susceptible steel-fabricated equipment. Even with advances in steel metallurgy, wet H{sub 2}S cracking continues to be a problem. New research data shows that process conditions such as temperature, pH and flowrate are key factors in the corrosion process. Before selecting equipment material, operators must understand the corrosion mechanisms present within process conditions. Several case histories investigate the corrosion reactions found when refining naphthenic crudes and operating amine gas-sweetening systems. These examples show how to use process controls, inhibitors and/or metallurgy to control corrosion and environmental cracking, to improve material selection and to extend equipment service life.

Kane, R.D.; Cayard, M.S. [CLI International, Houston, TX (United States)

1995-11-01T23:59:59.000Z

88

fCourse: Learn to Swim Level 5: Stroke Refinement  

E-Print Network [OSTI]

fCourse: Learn to Swim Level 5: Stroke Refinement Purpose To further learn how to coordinate and refine strokes Prerequisites Valid American Red Cross Learn-to-Swim Level 4: Fundamental Aquatic Skills, but not required) Course: Learn to Swim Level 5: Stroke Refinement #12;

Hemmers, Oliver

89

Parametric Rietveld Refinement Prof. John S.O. Evans  

E-Print Network [OSTI]

Parametric Rietveld Refinement Prof. John S.O. Evans APD IV Gaithersburg, 2013 Durham Chemistry Outline · What is parametric Rietveld refinement? · Should you do it? · How do you do it? · What can you., 40, 2007, 87 X+N refinements Jean Francois Berar, XND #12;john.evans@durham.ac.uk www

Magee, Joseph W.

90

Parallel Adaptive Mesh Refinement and Redistribution on Distributed Memory Computers  

E-Print Network [OSTI]

Parallel Adaptive Mesh Refinement and Redistribution on Distributed Memory Computers C. ¨ Ozturan Polytechnic Institute Troy, NY 12181 Abstract A procedure to support parallel refinement and redistribution the required adjacency information. Mesh refinement is done by employing links back to the geometric

Bystroff, Chris

91

RDOCK: Refinement of Rigid-body Protein Docking Predictions  

E-Print Network [OSTI]

RDOCK: Refinement of Rigid-body Protein Docking Predictions Li Li,1 Rong Chen,1 and Zhiping Weng1 RDOCK for refining unbound predictions generated by a rigid-body docking algorithm ZDOCK, which has been, RDOCK represents the simplest approach toward refining unbound docking predictions. Despite its simplic

Weng, Zhiping

92

Error estimation and adaptive mesh refinement for aerodynamic flows  

E-Print Network [OSTI]

Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann, Joachim Held-oriented mesh refinement for single and multiple aerodynamic force coefficients as well as residual-based mesh refinement applied to various three-dimensional lam- inar and turbulent aerodynamic test cases defined

Hartmann, Ralf

93

Validating Process Refinement with Ontologies , Gerd Groener2  

E-Print Network [OSTI]

Validating Process Refinement with Ontologies Yuan Ren1 , Gerd Groener2 , Jens Lemcke3 , Tirdad University of Koblenz-Landau, 3 SAP AG Abstract. A crucial task in process management is the validation of process refinements. A process refinement is a process description in a more fine-grained representation

Staab, Steffen

94

Assessment of Energy Efficiency Improvement in the United States Petroleum Refining Industry  

E-Print Network [OSTI]

Profile of the U.S. Petroleum Refining Industry, prepared byBandwidth for Petroleum Refining Processes, prepared byKaiser, M.J. , Petroleum Refining Technology & Economics,

Morrow III, William R.

2014-01-01T23:59:59.000Z

95

MECS 2006 - Petroleum Refining | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department of Energy Low-Temperature CombustionGlass MECS 2006 - GlassPetroleum Refining

96

Norwegian Silicon Refining AS | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico:CommunityNorthwest Basin and RangeNorvento USA LLC JumpRefining

97

Valero Refining Company - NJ | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,Save Energy NowNew HampshireValero Refining Company - NJ Jump to:

98

Hydrogen and Fuel Cells - Refining the Message Initiating a National Dialogue and Educational Agenda  

E-Print Network [OSTI]

Hydrogen and Fuel Cells – Refining the Message Initiating aHydrogen and Fuel Cells – Refining the Message Initiating a

Eggert, Anthony; Kurani, Kenneth S; Turrentine, Tom; Ogden, Joan M; Sperling, Dan; Winston, Emily

2005-01-01T23:59:59.000Z

99

A CSP Account of Event-B Refinement  

E-Print Network [OSTI]

Event-B provides a flexible framework for stepwise system development via refinement. The framework supports steps for (a) refining events (one-by-one), (b) splitting events (one-by-many), and (c) introducing new events. In each of the steps events can moreover possibly be anticipated or convergent. All such steps are accompanied with precise proof obligations. Still, it remains unclear what the exact relationship - in terms of a behaviour-oriented semantics - between an Event-B machine and its refinement is. In this paper, we give a CSP account of Event-B refinement, with a treatment for the first time of splitting events and of anticipated events. To this end, we define a CSP semantics for Event-B and show how the different forms of Event-B refinement can be captured as CSP refinement.

Schneider, Steve; Wehrheim, Heike; 10.4204/EPTCS.55.9

2011-01-01T23:59:59.000Z

100

Mirror of the refined topological vertex from a matrix model  

E-Print Network [OSTI]

We find an explicit matrix model computing the refined topological vertex, starting from its representation in terms of plane partitions. We then find the spectral curve of that matrix model, and thus the mirror symmetry of the refined vertex. With the same method we also find a matrix model for the strip geometry, and we find its mirror curve. The fact that there is a matrix model shows that the refined topological string amplitudes also satisfy the remodeling the B-model construction.

B. Eynard; C. Kozcaz

2011-07-26T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Electron beam skull melting and refining of secondary copper  

SciTech Connect (OSTI)

Electron Beam Melting is the most efficient technology for metals and alloys refining. For secondary metals processing the Electron Beam Skull Melting (EBSM) with the electromagnetic stirring (EMS) of melt in the crucible was shown to be the most appropriate. The copper produced by EBSM with EMS possesses higher density and electric conductivity in comparison with other refining methods. The details for high power electrical machines were cast of the copper waste refined by EBSM technology.

Bychkov, Y.; Ladokhin, S. [Donetskvtortsvetmet, Donetsk (Ukraine)

1995-12-31T23:59:59.000Z

102

Refined Chern-Simons Theory and Topological String  

E-Print Network [OSTI]

We show that refined Chern-Simons theory and large N duality can be used to study the refined topological string with and without branes. We derive the refined topological vertex of hep-th/0701156 and hep-th/0502061 from a link invariant of the refined SU(N) Chern-Simons theory on S^3, at infinite N. Quiver-like Chern-Simons theories, arising from Calabi-Yau manifolds with branes wrapped on several minimal S^3's, give a dual description of a large class of toric Calabi-Yau. We use this to derive the refined topological string amplitudes on a toric Calabi-Yau containing a shrinking P^2 surface. The result is suggestive of the refined topological vertex formalism for arbitrary toric Calabi-Yau manifolds in terms of a pair of vertices and a choice of a Morse flow on the toric graph, determining the vertex decomposition. The dependence on the flow is reminiscent of the approach to the refined topological string in upcoming work of Nekrasov and Okounkov. As a byproduct, we show that large N duality of the refined topological string explains the ``mirror symmetry`` of the refined colored HOMFLY invariants of knots.

Mina Aganagic; Shamil Shakirov

2012-10-09T23:59:59.000Z

103

Table 19. U.S. Refiner Residual Fuel Oil Prices  

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

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1996...

104

Table 19. U.S. Refiner Residual Fuel Oil Prices  

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

Prices," source for backcast estimates prior to January 1983. 19. U.S. Refiner Residual Fuel Oil Prices 36 Energy Information Administration Petroleum Marketing Annual 1997...

105

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

250 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

106

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Gasoline and Diesel Fuel Update (EIA)

- - - - W W - - - - - - See footnotes at end of table. 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State 292 Energy...

107

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

220 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

108

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

220 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

109

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Energy Information Administration Petroleum Marketing Annual 1995 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

110

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

134 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

111

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State (Thousand Gallons per...

112

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

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

250 Energy Information AdministrationPetroleum Marketing Annual 1998 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

113

Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales...  

Gasoline and Diesel Fuel Update (EIA)

Energy Information Administration Petroleum Marketing Annual 1995 Table 44. Refiner Motor Gasoline Volumes by Formulation, Sales Type, PAD District, and State (Thousand Gallons...

114

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

134 Energy Information AdministrationPetroleum Marketing Annual 1999 Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District, and State (Cents per Gallon...

115

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Gasoline and Diesel Fuel Update (EIA)

by Grade, Sales Type, PAD District, and State 262 Energy Information Administration Petroleum Marketing Annual 1996 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

116

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Gasoline and Diesel Fuel Update (EIA)

by Grade, Sales Type, PAD District, and State 262 Energy Information Administration Petroleum Marketing Annual 1997 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

117

New Process for Grain Refinement of Aluminum. Final Report  

SciTech Connect (OSTI)

A new method of grain refining aluminum involving in-situ formation of boride nuclei in molten aluminum just prior to casting has been developed in the subject DOE program over the last thirty months by a team consisting of JDC, Inc., Alcoa Technical Center, GRAS, Inc., Touchstone Labs, and GKS Engineering Services. The Manufacturing process to make boron trichloride for grain refining is much simpler than preparing conventional grain refiners, with attendant environmental, capital, and energy savings. The manufacture of boride grain refining nuclei using the fy-Gem process avoids clusters, salt and oxide inclusions that cause quality problems in aluminum today.

Dr. Joseph A. Megy

2000-09-22T23:59:59.000Z

118

On Adaptive Mesh Refinement for Atmospheric Pollution Models  

E-Print Network [OSTI]

On Adaptive Mesh Refinement for Atmospheric Pollution Models Emil M. Constantinescu and Adrian res- olution system for modeling regional air pollution based on the chemical transport model STEM. Keywords: Air Pollution Modeling, Adaptive Mesh Refinement. 1 Introduction Inadequate grid resolution can

Sandu, Adrian

119

11 California Petroleum Supply, Transportation, Refining and Marketing Trends  

E-Print Network [OSTI]

11 California Petroleum Supply, Transportation, Refining and Marketing Trends Chapter 2 CALIFORNIA PETROLEUM SUPPLY, TRANSPORTATION, REFINING AND MARKETING TRENDS INTRODUCTION California is an integral part of the world oil market as a world-scale petroleum consumer. Historically, about 50 percent of this petroleum

120

Refining Landscape Change Models through Outlier Analysis in the  

E-Print Network [OSTI]

Refining Landscape Change Models through Outlier Analysis in the Muskegon Watershed of Michigan significantly to the state economy, accounting for nearly 20% of its economic output (Michigan Land Use, 1965; Lee, 1973; Wegener, 1994), and model refinement/advancement, in large part due to advances

Walker, Robert T.

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Refined BPS state counting from Nekrasov's formula and Macdonald functions  

E-Print Network [OSTI]

It has been argued that the Nekrasov's partition function gives the generating function of refined BPS state counting in the compactification of M theory on local Calabi-Yau spaces. We show that a refined version of the topological vertex we proposed before (hep-th/0502061) is a building block of the Nekrasov's partition function with two equivariant parameters. Compared with another refined topological vertex by Iqbal-Kozcaz-Vafa (hep-th/0701156), our refined vertex is expressed entirely in terms of the specialization of the Macdonald symmetric functions which is related to the equivariant character of the Hilbert scheme of points on C^2. We provide diagrammatic rules for computing the partition function from the web diagrams appearing in geometric engineering of Yang-Mills theory with eight supercharges. Our refined vertex has a simple transformation law under the flop operation of the diagram, which suggests that homological invariants of the Hopf link are related to the Macdonald functions.

Hidetoshi Awata; Hiroaki Kanno

2009-03-10T23:59:59.000Z

122

Steel refining with an electrochemical cell  

DOE Patents [OSTI]

Disclosed is an apparatus for processing a metallic fluid containing iron oxide, container for a molten metal including an electrically conductive refractory disposed for contact with the molten metal which contains iron oxide, an electrolyte in the form of a basic slag on top of the molten metal, an electrode in the container in contact with the slag electrically separated from the refractory, and means for establishing a voltage across the refractory and the electrode to reduce iron oxide to iron at the surface of the refractory in contact with the iron oxide containing fluid. A process is disclosed for refining an iron product containing not more than about 10% by weight sulfur, comprising providing an electrolyte of a slag containing one or more of calcium oxide, magnesium oxide, silica or alumina, providing a cathode of the iron product in contact with the electrolyte, providing an anode in contact with the electrolyte electrically separated from the cathode, and operating an electrochemical cell formed by the anode, the cathode and the electrolyte to separate oxygen or sulfur present in the iron product therefrom.

Blander, M.; Cook, G.M.

1985-05-21T23:59:59.000Z

123

Steel refining with an electrochemical cell  

DOE Patents [OSTI]

Apparatus is described for processing a metallic fluid containing iron oxide, container for a molten metal including an electrically conductive refractory disposed for contact with the molten metal which contains iron oxide, an electrolyte in the form of a basic slag on top of the molten metal, an electrode in the container in contact with the slag electrically separated from the refractory, and means for establishing a voltage across the refractory and the electrode to reduce iron oxide to iron at the surface of the refractory in contact with the iron oxide containing fluid. A process is disclosed for refining an iron product containing not more than about 10% by weight oxygen and not more than about 10% by weight sulfur, comprising providing an electrolyte of a slag containing one or more of calcium oxide, magnesium oxide, silica or alumina, providing a cathode of the iron product in contact with the electrolyte, providing an anode in contact with the electrolyte electrically separated from the cathode, and operating an electrochemical cell formed by the anode, the cathode and the electrolyte to separate oxygen or sulfur present in the iron product therefrom. 2 figs.

Blander, M.; Cook, G.M.

1988-05-17T23:59:59.000Z

124

GRChombo : Numerical Relativity with Adaptive Mesh Refinement  

E-Print Network [OSTI]

Numerical relativity has undergone a revolution in the past decade. With a well-understood mathematical formalism, and full control over the gauge modes, it is now entering an era in which the science can be properly explored. In this work, we introduce GRChombo, a new numerical relativity code written to take full advantage of modern parallel computing techniques. GRChombo's features include full adaptive mesh refinement with block structured Berger-Rigoutsos grid generation which supports non-trivial "many-boxes-in-many-boxes" meshing hierarchies, and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation with the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. We show that GRChombo passes all the standard "Apples-to-Apples" code comparison tests. We also show that it can stably and accurately evolve vacuum black hole spacetimes such as binary black hole mergers, and non-vacuum spacetimes such as scalar collapses into black holes. As an illustration of its AMR capability, we demonstrate the evolution of triple black hole merger, which can be set up trivially in GRChombo.

Katy Clough; Pau Figueras; Hal Finkel; Markus Kunesch; Eugene A. Lim; Saran Tunyasuvunakool

2015-03-11T23:59:59.000Z

125

GRChombo : Numerical Relativity with Adaptive Mesh Refinement  

E-Print Network [OSTI]

Numerical relativity has undergone a revolution in the past decade. With a well-understood mathematical formalism, and full control over the gauge modes, it is now entering an era in which the science can be properly explored. In this work, we introduce GRChombo, a new numerical relativity code written to take full advantage of modern parallel computing techniques. GRChombo's features include full adaptive mesh refinement with block structured Berger-Rigoutsos grid generation which supports non-trivial "many-boxes-in-many-boxes" meshing hierarchies, and massive parallelism through the Message Passing Interface (MPI). GRChombo evolves the Einstein equation with the standard BSSN formalism, with an option to turn on CCZ4 constraint damping if required. We show that GRChombo passes all the standard "Apples-to-Apples" code comparison tests. We also show that it can stably and accurately evolve vacuum black hole spacetimes such as binary black hole mergers, and non-vacuum spacetimes such as scalar collapses into b...

Clough, Katy; Finkel, Hal; Kunesch, Markus; Lim, Eugene A; Tunyasuvunakool, Saran

2015-01-01T23:59:59.000Z

126

Electron beam cold hearth refining in Vallejo  

SciTech Connect (OSTI)

Electron Beam Cold Hearth Refining Furnace (EBCHR) in Vallejo, California is alive, well, and girding itself for developing new markets. A brief review of the twelve years experience with EBCHR in Vallejo. Acquisition of the Vallejo facility by Axel Johnson Metals, Inc. paves the way for the development of new products and markets. A discussion of some of the new opportunities for the advancement of EBCHR technology. Discussed are advantages to the EBCHR process which include: extended surface area of molten metal exposed to higher vacuum; liberation of insoluble oxide particles to the surface of the melt; higher temperatures that allowed coarse solid particles like carbides and carbonitrides to be suspended in the fluid metal as fine micro-segregates, and enhanced removal of volatile trace impurities like lead, bismuth and cadmium. Future work for the company includes the continued recycling of alloys and also fabricating stainless steel for the piping of chip assembly plants. This is to prevent `killer defects` that ruin a memory chip.

Lowe, J.H.C. [Axel Johnson Metals, Inc., Vallejo, CA (United States)

1994-12-31T23:59:59.000Z

127

Steel refining with an electrochemical cell  

DOE Patents [OSTI]

Apparatus for processing a metallic fluid containing iron oxide, container for a molten metal including an electrically conductive refractory disposed for contact with the molten metal which contains iron oxide, an electrolyte in the form of a basic slag on top of the molten metal, an electrode in the container in contact with the slag electrically separated from the refractory, and means for establishing a voltage across the refractory and the electrode to reduce iron oxide to iron at the surface of the refractory in contact with the iron oxide containing fluid. A process is disclosed for refining an iron product containing not more than about 10% by weight oxygen and not more than about 10% by weight sulfur, comprising providing an electrolyte of a slag containing one or more of calcium oxide, magnesium oxide, silica or alumina, providing a cathode of the iron product in contact with the electrolyte, providing an anode in contact with the electrolyte electrically separated from the cathode, and operating an electrochemical cell formed by the anode, the cathode and the electrolyte to separate oxygen or sulfur present in the iron product therefrom.

Blander, Milton (Palos Park, IL); Cook, Glenn M. (Naperville, IL)

1988-01-01T23:59:59.000Z

128

Changing System Interfaces Consistently: a New Refinement Strategy for CSP B  

E-Print Network [OSTI]

Changing System Interfaces Consistently: a New Refinement Strategy for CSP B Steve Schneider refinement in the context of CSP B. Our motivation to include this notion of refinement within the CSP B to change the events of a CSP process and the B machines when refining a system. Notions of refinement based

Doran, Simon J.

129

Flop Invariance of Refined Topological Vertex and Link Homologies  

E-Print Network [OSTI]

It has been proposed recently that the topological A-model string theory on local toric Calabi-Yau manifolds has a two parameter extension. Amplitudes of the two parameter topological strings can be computed using a diagrammatic method called the refined topological vertex. In this paper we study properties of the refined amplitudes under the flop transition of toric Calabi-Yau three-folds. We also discuss that the slicing invariance and the flop transition imply a simple formula for the homological sl(N) invariants of the Hopf link. The new expression for the invariants gives a simple refinement of the Hopf link invariant of Chern-Simons theory.

Masato Taki

2008-05-03T23:59:59.000Z

130

Multigrid elliptic equation solver with adaptive mesh refinement  

E-Print Network [OSTI]

In this paper we describe in detail the computational algorithm used by our parallel multigrid elliptic equation solver with adaptive mesh refinement. Our code uses truncation error estimates to adaptively refine the grid as part of the solution process. The presentation includes a discussion of the orders of accuracy that we use for prolongation and restriction operators to ensure second order accurate results and to minimize computational work. Code tests are presented that confirm the overall second order accuracy and demonstrate the savings in computational resources provided by adaptive mesh refinement.

J. David Brown; Lisa L. Lowe

2005-03-22T23:59:59.000Z

131

Integrated process for the solvent refining of coal  

DOE Patents [OSTI]

A process is set forth for the integrated liquefaction of coal by the catalytic solvent refining of a feed coal in a first stage to liquid and solid products and the catalytic hydrogenation of the solid product in a second stage to produce additional liquid product. A fresh inexpensive, throw-away catalyst is utilized in the second stage hydrogenation of the solid product and this catalyst is recovered and recycled for catalyst duty in the solvent refining stage without any activation steps performed on the used catalyst prior to its use in the solvent refining of feed coal.

Garg, Diwakar (Macungie, PA)

1983-01-01T23:59:59.000Z

132

Refined Analytic Torsion as an Element of the Determinant Line  

E-Print Network [OSTI]

We construct a canonical element, called the refined analytic torsion, of the determinant line of the cohomology of a closed oriented odd-dimensional manifold M with coefficients in a flat complex vector bundle E. We compute the Ray-Singer norm of the refined analytic torsion. In particular, if there exists a flat Hermitian metric on E, we show that this norm is equal to 1. We prove a duality theorem, establishing a relationship between the refined analytic torsions corresponding to a flat connection and its dual.

Maxim Braverman; Thomas Kappeler

2006-05-15T23:59:59.000Z

133

Refining Social Justice Through Collaborative Inquiry: Key Rewards and Challenges for Teacher Educators  

E-Print Network [OSTI]

Researcher, 25 (5), 5-15. Cooper—Refining Social Justice—35social justice. Cooper—Refining Social Justice—27 REFERENCESCollege Press. Cooper—Refining Social Justice—28 Cochran-

Cooper, Camille Wilson

2006-01-01T23:59:59.000Z

134

Error estimation and adaptive mesh refinement for aerodynamic flows  

E-Print Network [OSTI]

Error estimation and adaptive mesh refinement for aerodynamic flows Ralf Hartmann1 and Paul Houston2 1 Institute of Aerodynamics and Flow Technology DLR (German Aerospace Center) Lilienthalplatz 7

Hartmann, Ralf

135

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

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

S O N D 0 10 20 30 40 50 60 70 1995 Cents per Gallon Excluding Taxes Retail < or 1% Wholesale < or 1% Retail > 1% Wholesale > 1% 7. U.S. Refiner Residual Fuel Oil Prices and...

136

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

150.0 2,026.7 W W 234.5 161.7 - 396.3 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

137

Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

253.2 2,222.4 W W 206.4 134.3 - 340.7 See footnotes at end of table. 43. Refiner Motor Gasoline Volumes by Grade, Sales Type, PAD District, and State 262 Energy Information...

138

Japan`s refiner/marketers headed for major shakeout  

SciTech Connect (OSTI)

Japan`s downstream oil industry is in a state of crisis and headed for a major shakeout. The major catalyst for this was a dramatic deregulation step during April 1996 that allowed refined petroleum product imports by non-refiners. The move, together with a sharp drop in refining margins, falling retail gasoline prices, and a service station sector on the brink of collapse, are all leading to massive changes in the way the country`s refiners and marketers do business. This paper reviews the collapse of corporate profits during this period of deregulation; the development of a new price system geared toward bringing the prices of gasoline, fuel oil, and kerosene into line with each other to offset the fall in gasoline prices; and industry restructuring including mergers, acquisitions, and marketing consolidation. The paper then makes predictions on the outcome of these changes on the Japanese oil industry.

NONE

1996-08-26T23:59:59.000Z

139

Polygons in Buildings and their Refined Side Lengths  

E-Print Network [OSTI]

1999. [Bro] K. Brown, Buildings, Springer, 1989. [BuBI] D.AMS, 2001. [D] M. Davis, Buildings are CAT(0), in “Geometryat Springerlink.com POLYGONS IN BUILDINGS AND THEIR REFINED

Kapovich, Michael; Leeb, Bernhard; Millson, John J.

2009-01-01T23:59:59.000Z

140

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

133.6 - 276.4 See footnotes at end of table. 220 Energy Information AdministrationPetroleum Marketing Annual 2000 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Petroleum Products Table 43. Refiner Motor Gasoline Volumes...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

201.3 - 453.3 See footnotes at end of table. 262 Energy Information Administration Petroleum Marketing Annual 1995 Table 43. Refiner Motor Gasoline Volumes by Grade, Sales Type,...

142

Hydrogen and Fuel Cells - Refining the Message Initiating a National Dialogue and Educational Agenda  

E-Print Network [OSTI]

April 1, 2005 Hydrogen and Fuel Cells – Refining the MessageHydrogen and Fuel Cells – Refining the Message Initiating athe communication problem. Hydrogen and fuel cells have now

Eggert, Anthony; Kurani, Kenneth S; Turrentine, Tom; Ogden, Joan M; Sperling, Dan; Winston, Emily

2005-01-01T23:59:59.000Z

143

Iterative model-building, structure refinement, and density modification with the PHENIX AutoBuild Wizard  

E-Print Network [OSTI]

Iterative model-building, structure refinement, and densitytool for iterative model- building, structure refinement andusing RESOLVE or TEXTAL model- building, RESOLVE statistical

Terwilliger, T. C.; Los Alamos National Laboratory, Mailstop M888, Los Alamos, NM 87545, USA; Lawrence Berkeley National Laboratory, One Cyclotron Road, Building 64R0121, Berkeley, CA 94720, USA; Department of Haematology, University of Cambridge, Cambridge CB2 0XY, England

2008-01-01T23:59:59.000Z

144

Hydrogen and Fuel Cells - Refining the Message Initiating a National Dialogue and Educational Agenda  

E-Print Network [OSTI]

Hydrogen and Fuel Cells – Refining the Message Initiating aApril 1, 2005 Hydrogen and Fuel Cells – Refining the Messagethe communication problem. Hydrogen and fuel cells have now

Eggert, Anthony; Kurani, Kenneth S; Turrentine, Tom; Ogden, Joan M; Sperling, Dan; Winston, Emily

2005-01-01T23:59:59.000Z

145

Steps taken at Malelane refinery to improve refined sugar quality  

E-Print Network [OSTI]

The refinery at Malelane has in the past produced refined sugar for the consumer market. A decision was taken by the management of Transvaal Sugar (TSB) to produce a quality of refined sugar that would also be acceptable to the industrial and the export markets. The processes that were evaluated and implemented at the Malelane refinery during the past three seasons to achieve this objective, are described.

M Moodley; Pm Schorn

1997-01-01T23:59:59.000Z

146

Ultrasonic Sensor to Characterize Wood Pulp During Refining  

SciTech Connect (OSTI)

A novel sensor concept has been developed for measuring the consistency, the degree of refining, the water retention value (WRV), and the consistency of wood pulp during the refining process. The measurement time is less than 5 minutes and the sensor can operate in a slip-stream of the process line or as an at-line instrument. The consistency is obtained from a calibration, in which the attenuation of ultrasound through the pulp suspension is measured as a function of the solids weight percentage. The degree of refining and the WRV are determined from settling measurements. The settling of a pulp suspension (consistency less than 0.5 Wt%) is observed, after the mixer that keeps the pulp uniformly distributed is turned off. The attenuation of ultrasound as a function of time is recorded and these data show a peak, after a certain delay, defined as the “peak time.” The degree of refining increases with the peak time, as demonstrated by measuring pulp samples with different degrees of refining. The WRV can be determined using the relative peak time, defined as the ratio T2/T1, where T1 is an initial value of the peak time and T2 is the value after additional refining. This method offers an additional WRV test for the industry, because the freeness test is not specific for the WRV.

Greenwood, Margaret S.; Panetta, Paul D.; Bond, Leonard J.; McCaw, M. W.

2006-12-22T23:59:59.000Z

147

Direct Refinement against ProtonProton Dipolar Couplings in NMR Structure Determination of Macromolecules  

E-Print Network [OSTI]

Direct Refinement against Proton­Proton Dipolar Couplings in NMR Structure Determination in macromolecular structure refinement are pre- sented. Potentials are described for direct refinement against 1 H­1 dipolar coupling refinement is illustrated using the small protein ubiquitin. It is shown that direct 1 H

Clore, G. Marius

148

Adaptive mesh refinement for shocks and material interfaces  

SciTech Connect (OSTI)

There are three kinds of adaptive mesh refinement (AMR) in structured meshes. Block-based AMR sometimes over refines meshes. Cell-based AMR treats cells cell by cell and thus loses the advantage of the nature of structured meshes. Patch-based AMR is intended to combine advantages of block- and cell-based AMR, i.e., the nature of structured meshes and sharp regions of refinement. But, patch-based AMR has its own difficulties. For example, patch-based AMR typically cannot preserve symmetries of physics problems. In this paper, we will present an approach for a patch-based AMR for hydrodynamics simulations. The approach consists of clustering, symmetry preserving, mesh continuity, flux correction, communications, management of patches, and load balance. The special features of this patch-based AMR include symmetry preserving, efficiency of refinement across shock fronts and material interfaces, special implementation of flux correction, and patch management in parallel computing environments. To demonstrate the capability of the AMR framework, we will show both two- and three-dimensional hydrodynamics simulations with many levels of refinement.

Dai, William Wenlong [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

149

US refiners choose variety of routes to MTBE  

SciTech Connect (OSTI)

This paper reports that refiners and merchant manufacturers in the U.S. are gearing up to produce the large volumes of methyl tertiary butyl ether (MTBE) needed to comply with oxygenated gasoline requirements. The 1990 U.S. Clean Air Act Amendments specify that, as of the first of this coming November, gasoline containing a minimum of 2.7 wt % oxygen must be sold in 39 CO-nonattainment cities. Refiners and others are scurrying to bring MTBE capacity on line in time to meet this requirement. Many U.S. refiners already have some operating MTBE capacity, but this will not be nearly enough to meet the looming increase in demand. As a result, additional capacity is being constructed worldwide.

Rhodes, A.K.

1992-09-07T23:59:59.000Z

150

Trends in heavy oil production and refining in California  

SciTech Connect (OSTI)

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production and is part of a study being conducted for the US Department of Energy. This report summarizes trends in oil production and refining in Canada. Heavy oil (10{degrees} to 20{degrees} API gravity) production in California has increased from 20% of the state`s total oil production in the early 1940s to 70% in the late 1980s. In each of the three principal petroleum producing districts (Los Angeles Basin, Coastal Basin, and San Joaquin Valley) oil production has peaked then declined at different times throughout the past 30 years. Thermal production of heavy oil has contributed to making California the largest producer of oil by enhanced oil recovery processes in spite of low oil prices for heavy oil and stringent environmental regulation. Opening of Naval Petroleum Reserve No. 1, Elk Hills (CA) field in 1976, brought about a major new source of light oil at a time when light oil production had greatly declined. Although California is a major petroleum-consuming state, in 1989 the state used 13.3 billion gallons of gasoline or 11.5% of US demand but it contributed substantially to the Nation`s energy production and refining capability. California is the recipient and refines most of Alaska`s 1.7 million barrel per day oil production. With California production, Alaskan oil, and imports brought into California for refining, California has an excess of oil and refined products and is a net exporter to other states. The local surplus of oil inhibits exploitation of California heavy oil resources even though the heavy oil resources exist. Transportation, refining, and competition in the market limit full development of California heavy oil resources.

Olsen, D.K.; Ramzel, E.B.; Pendergrass, R.A. II

1992-07-01T23:59:59.000Z

151

Trends in heavy oil production and refining in California  

SciTech Connect (OSTI)

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil production and is part of a study being conducted for the US Department of Energy. This report summarizes trends in oil production and refining in Canada. Heavy oil (10{degrees} to 20{degrees} API gravity) production in California has increased from 20% of the state's total oil production in the early 1940s to 70% in the late 1980s. In each of the three principal petroleum producing districts (Los Angeles Basin, Coastal Basin, and San Joaquin Valley) oil production has peaked then declined at different times throughout the past 30 years. Thermal production of heavy oil has contributed to making California the largest producer of oil by enhanced oil recovery processes in spite of low oil prices for heavy oil and stringent environmental regulation. Opening of Naval Petroleum Reserve No. 1, Elk Hills (CA) field in 1976, brought about a major new source of light oil at a time when light oil production had greatly declined. Although California is a major petroleum-consuming state, in 1989 the state used 13.3 billion gallons of gasoline or 11.5% of US demand but it contributed substantially to the Nation's energy production and refining capability. California is the recipient and refines most of Alaska's 1.7 million barrel per day oil production. With California production, Alaskan oil, and imports brought into California for refining, California has an excess of oil and refined products and is a net exporter to other states. The local surplus of oil inhibits exploitation of California heavy oil resources even though the heavy oil resources exist. Transportation, refining, and competition in the market limit full development of California heavy oil resources.

Olsen, D.K.; Ramzel, E.B.; Pendergrass, R.A. II.

1992-07-01T23:59:59.000Z

152

,"Weekly Refiner Net Production"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2.Reformulated, Average Refiner GasolineAllRefiner Net Production"

153

Features of the Refined Gribov-Zwanziger theory: propagators, BRST soft symmetry breaking and glueball masses  

E-Print Network [OSTI]

The present work discusses an approach to access the physical spectrum of the Yang-Mills theory quantized in the Landau gauge. By using recent lattice data on the gluon propagator, it is possible to study the two-point functions of gauge invariant composite operators, from which masses of glueballs can be extracted. It turns out that the momentum dependence of the gluon propagator is very well reproduced by the corresponding tree-level gluon propagator obtained from the Refined Gribov-Zwanziger theory, which takes into account the presence of the Gribov horizon as well as the effect of condensates of mass dimension two. The resulting glueball masses are in good agreement with the available lattice data

Silvio P. Sorella; David Dudal; Marcelo S. Guimaraes; Nele Vandersickel

2011-02-02T23:59:59.000Z

154

Energy Efficiency Improvement in the Petroleum RefiningIndustry  

SciTech Connect (OSTI)

Information has proven to be an important barrier inindustrial energy efficiency improvement. Voluntary government programsaim to assist industry to improve energy efficiency by supplyinginformation on opportunities. ENERGY STAR(R) supports the development ofstrong strategic corporate energy management programs, by providingenergy management information tools and strategies. This paper summarizesENERGY STAR research conducted to develop an Energy Guide for thePetroleum Refining industry. Petroleum refining in the United States isthe largest in the world, providing inputs to virtually every economicsector, including the transport sector and the chemical industry.Refineries spend typically 50 percent of the cash operating costs (e.g.,excluding capital costs and depreciation) on energy, making energy amajor cost factor and also an important opportunity for cost reduction.The petroleum refining industry consumes about 3.1 Quads of primaryenergy, making it the single largest industrial energy user in the UnitedStates. Typically, refineries can economically improve energy efficiencyby 20 percent. The findings suggest that given available resources andtechnology, there are substantial opportunities to reduce energyconsumption cost-effectively in the petroleum refining industry whilemaintaining the quality of the products manufactured.

Worrell, Ernst; Galitsky, Christina

2005-05-01T23:59:59.000Z

155

Mutually refining DPCM system with applications in frame erasure channels  

E-Print Network [OSTI]

We consider the design of a mutually refining DPCM (MR-DPCM) system and its applications to frame erasure channels. MR-DPCM is a system that uses diversity to overcome channel impairments. In this thesis the design for a two channel system...

Sutharsan, Thirunathan

1996-01-01T23:59:59.000Z

156

A Refined Difference Field Theory for Symbolic Summation  

E-Print Network [OSTI]

In this article we present a refined summation theory based on Karr's difference field approach. The resulting algorithms find sum representations with optimal nested depth. For instance, the algorithms have been applied successively to evaluate Feynman integrals from Perturbative Quantum Field Theory.

Carsten Schneider

2008-08-19T23:59:59.000Z

157

Note on refined topological vertex, Jack polynomials and instanton counting  

E-Print Network [OSTI]

In this article, we calculated the refined topological vertex for the one parameter case using the Jack symmetric functions. Also, we obtain the partition function for elliptic N=2 models, the results coincide with those of Nekrasov instanton counting partition functions for the $N=2^{\\ast}$ theories.

Jianfeng Wu

2010-12-10T23:59:59.000Z

158

Refined Chern-Simons Theory and Knot Homology  

E-Print Network [OSTI]

The refined Chern-Simons theory is a one-parameter deformation of the ordinary Chern-Simons theory on Seifert manifolds. It is defined via an index of the theory on N M5 branes, where the corresponding one-parameter deformation is a natural deformation of the geometric background. Analogously with the unrefined case, the solution of refined Chern-Simons theory is given in terms of S and T matrices, which are the proper Macdonald deformations of the usual ones. This provides a direct way to compute refined Chern-Simons invariants of a wide class of three-manifolds and knots. The knot invariants of refined Chern-Simons theory are conjectured to coincide with the knot superpolynomials -- Poincare polynomials of the triply graded knot homology theory. This conjecture is checked for a large number of torus knots in S^3, colored by the fundamental representation. This is a short, expository version of arXiv:1105.5117, with some new results included.

Mina Aganagic; Shamil Shakirov

2012-02-12T23:59:59.000Z

159

Refined functional relations for the elliptic SOS model  

E-Print Network [OSTI]

In this work we refine the method of [1] and obtain a novel kind of functional equation determining the partition function of the elliptic SOS model with domain wall boundaries. This functional relation is originated from the dynamical Yang-Baxter algebra and its solution is given in terms of multiple contour integrals.

W. Galleas

2012-10-21T23:59:59.000Z

160

#PRL --A Proof Refinement Calculus for Classical Reasoning  

E-Print Network [OSTI]

#µPRL -- A Proof Refinement Calculus for Classical Reasoning in Computational Type Theory Nuria, 14482 Potsdam, Germany {brede,kreitz}@cs.uni­potsdam.de Abstract. We present a hybrid proof calculus #µPRL to con­ structive proofs and show that the restriction of #µPRL to µ­safe proof terms is sound

Kreitz, Christoph

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161

PRL A Proof Refinement Calculus for Classical Reasoning  

E-Print Network [OSTI]

µPRL ­ A Proof Refinement Calculus for Classical Reasoning in Computational Type Theory Nuria Brede, Germany {brede,kreitz}@cs.uni-potsdam.de Abstract. We present a hybrid proof calculus µPRL that combines and show that the restriction of µPRL to µ-safe proof terms is sound and complete for intuitionistic

Kreitz, Christoph

162

Kenney: The USSOCOM Trinity The USSOCOM Trinity: Refining Special Operations  

E-Print Network [OSTI]

was that the American military would plan, train, and equip to conduct major combat operations on opposite sidesKenney: The USSOCOM Trinity 1 The USSOCOM Trinity: Refining Special Operations Commitment to 21st on the United States Special Operations Command and recommends means and methods to capitalize on current

163

Electron beam melting and refining state of the art 1995  

SciTech Connect (OSTI)

This is the proceedings of the Electron Beam Melting and Refining - State of the Art 1995 Conference. It contains 23 of the 30 scheduled papers. Papers cover an array of electron beam melting applications, from industrial plating of metal strip, through government work on manufacturing and processing fissile alloys. Separate abstracts have been prepared for articles from this proceedings.

Bakish, R. [ed.

1995-12-31T23:59:59.000Z

164

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

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

4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1996 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

165

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Gasoline and Diesel Fuel Update (EIA)

4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1995 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

166

Source: Energy Information Administration, Form EIA-782A, "Refiners...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

4. U.S. Refiner Wholesale Petroleum Product Prices Figure J F M A M J J A S O N D 0 20 40 60 80 100 120 1997 Cents per Gallon Excluding Taxes Kero-jet Propane No. 1 Distillate No....

167

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

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

71.8 W 70.5 78.9 W 76.0 83.6 W 69.2 75.2 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

168

Table 35. Refiner Motor Gasoline Prices by Grade, Sales Type...  

Gasoline and Diesel Fuel Update (EIA)

W 68.4 70.8 W W 78.6 W 85.7 81.8 W 69.3 73.8 See footnotes at end of table. 35. Refiner Motor Gasoline Prices by Grade, Sales Type, PAD District and State 176 Energy Information...

169

Time Critical Isosurface Refinement And Smoothing V. Pascucci  

E-Print Network [OSTI]

the global geometry of the embedding (no self- intersections) of any approximated level of detail: (i) a progressive al- gorithm that builds a multi-resolution surface by successive refine- ments so of the U.S. Depart- ment of Energy by University of California Lawrence Livermore National Laboratory under

Texas at Austin, University of

170

An accuracy study of mesh refinement on mapped grids  

E-Print Network [OSTI]

An accuracy study of mesh refinement on mapped grids D. Calhoun and R. J. LeVeque, October, 2003 on a highly skewed portion of a mapped grid. Smooth and shock-wave solutions to the Euler equations are used interface. Key words: gas dynamics, finite-volume, finite-difference, Cartesian grid, mapped grids

Calhoun, Donna

171

Department of Computing Stepwise Refinement in Event-B||CSP  

E-Print Network [OSTI]

in Event-B||CSP Part 1: Safety Steve Schneider, Helen Treharne and Heike Wehrheim March 12th 2011 #12;Stepwise Refinement in Event-B CSP Part 1: Safety Steve Schneider1 Helen Treharne1 Heike Wehrheim2 1, 2011 Contents 1 Introduction 3 2 CSP 3 2.1 Notation

Doran, Simon J.

172

TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass  

E-Print Network [OSTI]

TOPICAL PAPER Potential Synergies and Challenges in Refining Cellulosic Biomass to Fuels, Chemicals that can reduce greenhouse gas emissions, enhance energy security, improve the economy, dispose of such products, and sugar costs are predicted to drop with plant size as a result of economies of scale

California at Riverside, University of

173

Decommissioning samples from the Ft. Lewis, WA, solvent refined coal pilot plant: chemical analysis and biological testing  

SciTech Connect (OSTI)

This report presents the results from chemical analyses and limited biological assays of three sets of samples from the Ft. Lewis, WA solvent refined coal (SRC) pilot plant. The samples were collected during the process of decommissioning this facility. Chemical composition was determined for chemical class fractions of the samples by using high-resolution gas chromatography (GC), high-resolution GC/mass spectrometry (MS) and high-resolution MS. Biological activity was measuring using both the histidine reversion microbial mutagenicity assay with Salmonella typhimurium, TA98 and an initiation/promotion mouse-skin tumorigenicity assay. 19 refs., 7 figs., 27 tabs.

Weimer, W.C.; Wright, C.W.

1985-10-01T23:59:59.000Z

174

Development of miscella refining process for cottonseed oil-isopropyl alcohol system: laboratory-scale evaluations  

E-Print Network [OSTI]

A technologically feasible cottonseed oil-isopropyl alcohol (IPA) miscella refining process was developed to produce high quality cottonseed oil. Individual steps necessary to refine cottonseed oil-IPA miscella were determined and improved...

Chau, Chi-Fai

1994-01-01T23:59:59.000Z

175

ASSESSMENT AND REFINEMENT OF REAL-TIME TRAVEL TIME ALGORITHMS FOR USE IN PRACTICE  

E-Print Network [OSTI]

ASSESSMENT AND REFINEMENT OF REAL-TIME TRAVEL TIME ALGORITHMS FOR USE IN PRACTICE Final Report AND REFINEMENT OF REAL-TIME TRAVEL TIME ALGORITHMS FOR USE IN PRACTICE 5. Report Date June 2007 Final Report 6

Bertini, Robert L.

176

WELDABILITY OF GRAIN-REFINED Fe-12Ni-0.25Ti STEEL FOR CRYOGENIC APPLICATIONS  

E-Print Network [OSTI]

of the Cryogenic Nickel Steels, WRC Bull, 205, May, 1975.REFINED Fe-12Ni-0.25Ti STEEL FOR CRYOGENIC APPLICATIONS D.E.REFINED Fe-12Ni-0.25Ti STEEL FOR CRYOGENIC APPLICATIONS D.

Morris Jr., J.W.

2013-01-01T23:59:59.000Z

177

Adaptive Mesh Refinement for Coupled Elliptic-Hyperbolic Systems  

E-Print Network [OSTI]

We present a modification to the Berger and Oliger adaptive mesh refinement algorithm designed to solve systems of coupled, non-linear, hyperbolic and elliptic partial differential equations. Such systems typically arise during constrained evolution of the field equations of general relativity. The novel aspect of this algorithm is a technique of "extrapolation and delayed solution" used to deal with the non-local nature of the solution of the elliptic equations, driven by dynamical sources, within the usual Berger and Oliger time-stepping framework. We show empirical results demonstrating the effectiveness of this technique in axisymmetric gravitational collapse simulations. We also describe several other details of the code, including truncation error estimation using a self-shadow hierarchy, and the refinement-boundary interpolation operators that are used to help suppress spurious high-frequency solution components ("noise").

Frans Pretorius; Matthew W. Choptuik

2006-08-01T23:59:59.000Z

178

A refined position catalog of the Swift XRT afterglows  

E-Print Network [OSTI]

We present a catalogue of refined positions of 68 gamma ray burst (GRB) afterglows observed by the Swift X-ray Telescope (XRT) from the launch up to 2005 Oct 16. This is a result of the refinement of the XRT boresight calibration. We tested this correction by means of a systematic study of a large sample of X-ray sources observed by XRT with well established optical counterparts. We found that we can reduce the systematic error radius of the measurements by a factor of two, from 6.5" to 3.2" (90% of confidence). We corrected all the positions of the afterglows observed by XRT in the first 11 months of the Swift mission. This is particularly important for the 37 X-ray afterglows without optical counterpart. Optical follow-up of dark GRBs, in fact, will be more efficient with the use of the more accurate XRT positions.

A. Moretti; M. Perri; M. Capalbi; L. Angelini; J. E. Hill; S. Campana; D. N. Burrows; J. P. Osborne; G. Tagliaferri; G. Cusumano; P. Giommi; P. Romano; T. Mineo; J. Kennea; D. Morris; J. Nousek; C. Pagani; J. Racusin; A. F. Abbey; A. P. Beardmore; O. Godet; M. R. Goad; K. L. Page; A. A. Wells; G. Chincarini

2006-02-07T23:59:59.000Z

179

p-Adic refinable functions and MRA-based wavelets  

E-Print Network [OSTI]

We described a wide class of $p$-adic refinable equations generating $p$-adic multiresolution analysis. A method for the construction of $p$-adic orthogonal wavelet bases within the framework of the MRA theory is suggested. A realization of this method is illustrated by an example, which gives a new 3-adic wavelet basis. Another realization leads to the $p$-adic Haar bases which were known before.

A. Yu. Khrennikov; V. M. Shelkovich; M. Skopina

2007-11-18T23:59:59.000Z

180

Refined topological amplitudes in N=1 flux compactification  

E-Print Network [OSTI]

We study the implication of refined topological string amplitudes in the supersymmetric N=1 flux compactification. They generate higher derivative couplings among the vector multiplets and graviphoton with generically non-holomorphic moduli dependence. For a particular term, we can compute them by assuming the geometric engineering. We claim that the Dijkgraaf-Vafa large N matrix model with the beta-ensemble measure directly computes the higher derivative corrections to the supersymmetric effective action of the supersymmetric N=1$ gauge theory.

Yu Nakayama

2010-10-05T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

REFINING AND END USE STUDY OF COAL LIQUIDS  

SciTech Connect (OSTI)

This document summarizes all of the work conducted as part of the Refining and End Use Study of Coal Liquids. There were several distinct objectives set, as the study developed over time: (1) Demonstration of a Refinery Accepting Coal Liquids; (2) Emissions Screening of Indirect Diesel; (3) Biomass Gasification F-T Modeling; and (4) Updated Gas to Liquids (GTL) Baseline Design/Economic Study.

Unknown

2002-01-01T23:59:59.000Z

182

China`s refining/petrochemical industry continues expansion  

SciTech Connect (OSTI)

China`s downstream petroleum industry decreased refinery throughput and increased petrochemical production in 1994, compared to 1993 data. A report titled ``China Petroleum Industry `94,`` issued by China Petroleum Newsletter, a publication of China Petroleum Information Institute, summarized China`s refined products and petrochemical production figures for 1994. The report also listed important construction projects at China`s downstream plants. This paper presents data from this report.

NONE

1995-10-09T23:59:59.000Z

183

Refining Bio-Oil alongside Petroleum | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: AlternativeEnvironment,Institutes and Launches theResidentialRecoveryWaste and SaveRefining

184

Protein extraction in the refinement of Coastal Bermudagrass  

E-Print Network [OSTI]

, phosphoric acid, gaseous hydrochloric acid, anhydrous ammonia and ethylendiamine (Chang et aL, 1981; Wylie and Steen, 1988). Also the use of organic solvents such as hexane or cadoxen ([Cd(ethylendiamine)3](OH)2, cadmium ethylendiamine) (Ladisch et al... and lignin. Integrated conversion of the entire "barrel of biomass" (also referred to as biomass refining), is essential to obtain good system economics. This study evaluated the use of the Ammonia Fiber Explosion (AFEX) process in an integrated conversion...

De La Rosa Perez, Luis Bernardo

1992-01-01T23:59:59.000Z

185

Lattice refining loop quantum cosmology, anisotropic models and stability  

E-Print Network [OSTI]

A general class of loop quantizations for anisotropic models is introduced and discussed, which enhances loop quantum cosmology by relevant features seen in inhomogeneous situations. The main new effect is an underlying lattice which is being refined during dynamical changes of the volume. In general, this leads to a new feature of dynamical difference equations which may not have constant step-size, posing new mathematical problems. It is discussed how such models can be evaluated and what lattice refinements imply for semiclassical behavior. Two detailed examples illustrate that stability conditions can put strong constraints on suitable refinement models, even in the absence of a fundamental Hamiltonian which defines changes of the underlying lattice. Thus, a large class of consistency tests of loop quantum gravity becomes available. In this context, it will also be seen that quantum corrections due to inverse powers of metric components in a constraint are much larger than they appeared recently in more special treatments of isotropic, free scalar models where they were artificially suppressed.

Martin Bojowald; Daniel Cartin; Gaurav Khanna

2007-04-09T23:59:59.000Z

186

Refinements of the Weyl tensor classification in five dimensions  

E-Print Network [OSTI]

We refine the null alignment classification of the Weyl tensor of a five-dimensional spacetime. The paper focusses on the algebraically special alignment types {\\bf {N}}, {\\bf {III}}, {\\bf {II}} and {\\bf {D}}, while types {\\bf {I}} and {\\bf {G}} are briefly discussed. A first refinement is provided by the notion of spin type of the components of highest boost weight. Second, we analyze the Segre types of the Weyl operator acting on bivector space and examine the intersection with the spin type classification. We present a full treatment for types {\\bf {N}} and {\\bf {III}}, and illustrate the classification from different viewpoints (Segre type, rank, spin type) for types {\\bf {II}} and {\\bf {D}}, paying particular attention to possible nilpotence, which is a new feature of higher dimensions. We also point out other essential differences with the four-dimensional case. In passing, we exemplify the refined classification by mentioning the special subtypes associated to certain important spacetimes, such as Myers-Perry black holes, black strings, Robinson-Trautman spacetimes, and purely electric/magnetic type {\\bf {D}} spacetimes.

Alan Coley; Sigbjorn Hervik; Marcello Ortaggio; Lode Wylleman

2012-09-22T23:59:59.000Z

187

Refined similarity hypotheses in shell models of turbulence  

E-Print Network [OSTI]

A major challenge in turbulence research is to understand from first principles the origin of anomalous scaling of the velocity fluctuations in high-Reynolds-number turbulent flows. One important idea was proposed by Kolmogorov [J. Fluid Mech. {\\bf 13}, 82 (1962)], which attributes the anomaly to the variations of the locally averaged energy dissipation rate. Kraichnan later pointed out [J. Fluid Mech. {\\bf 62}, 305 (1973)] that the locally averaged energy dissipation rate is not an inertial-range quantity and a proper inertial-range quantity would be the local energy transfer rate. As a result, Kraichnan's idea attributes the anomaly to the variations of the local energy transfer rate. These ideas, generally known as refined similarity hypotheses, can also be extended to study the anomalous scaling of fluctuations of an active scalar, like the temperature in turbulent convection. In this paper, we examine the validity of these refined similarity hypotheses and their extensions to an active scalar in shell models of turbulence. We find that Kraichnan's refined similarity hypothesis and its extension are valid.

Emily S. C. Ching; H. Guo; T. S. Lo

2008-04-16T23:59:59.000Z

188

U. S. refiners move into another challenging technical era  

SciTech Connect (OSTI)

With the transition to unleaded gasoline scarcely behind us, another new era is dawning for the U.S. refiner. No one yet knows the exact configuration of the refinery of the future and no two refineries are likely to adapt in exactly the same way. What is certain, however, is that by the year 2000, refineries will be more technologically advanced, their products will be more environmentally acceptable, and their operators will be more highly trained. The typical U.S. refinery in the year 2000 will be located at an existing refinery site because economic and environmental considerations will make it impossible to build new grassroots capacity. As a result of the Clean Air act, the refinery of tomorrow will produce cleaner fuels The entire U.S. gasoline pool will likely be reformulated. Most of the diesel fuel pool will consist of ultralow-sulfur product. And jet fuel-which is experiencing rapid demand growth-will be an increasingly important product. Many existing refining process will remain in use, but they will be more efficient and more technologically advanced. Energy efficiency will be a primary concern, as refiners seek to combat ever-increasing crude oil costs and refinery operating expenses. The refinery of the future also will be much more environmentally acceptable. The article is a closer look at the refinery of the future.

Hall, J.R. (Ashland Oil Inc., Ashland, KY (US))

1991-10-21T23:59:59.000Z

189

Evolutions in 3D numerical relativity using fixed mesh refinement  

E-Print Network [OSTI]

We present results of 3D numerical simulations using a finite difference code featuring fixed mesh refinement (FMR), in which a subset of the computational domain is refined in space and time. We apply this code to a series of test cases including a robust stability test, a nonlinear gauge wave and an excised Schwarzschild black hole in an evolving gauge. We find that the mesh refinement results are comparable in accuracy, stability and convergence to unigrid simulations with the same effective resolution. At the same time, the use of FMR reduces the computational resources needed to obtain a given accuracy. Particular care must be taken at the interfaces between coarse and fine grids to avoid a loss of convergence at higher resolutions, and we introduce the use of "buffer zones" as one resolution of this issue. We also introduce a new method for initial data generation, which enables higher-order interpolation in time even from the initial time slice. This FMR system, "Carpet", is a driver module in the freely available Cactus computational infrastructure, and is able to endow generic existing Cactus simulation modules ("thorns") with FMR with little or no extra effort.

Erik Schnetter; Scott H. Hawley; Ian Hawke

2004-03-02T23:59:59.000Z

190

Protein NMR Structures Refined with Rosetta Have Higher Accuracy Relative to Corresponding Xray Crystal Structures  

E-Print Network [OSTI]

Protein NMR Structures Refined with Rosetta Have Higher Accuracy Relative to Corresponding Xray Information ABSTRACT: We have found that refinement of protein NMR structures using Rosetta with experimental in the PDB using standard refinement protocols. Using 40 pairs of NMR and X-ray crystal structures determined

Baker, David

191

proteinsSTRUCTURE O FUNCTION O BIOINFORMATICS A combination of rescoring and refinement  

E-Print Network [OSTI]

proteinsSTRUCTURE O FUNCTION O BIOINFORMATICS A combination of rescoring and refinement in protein docking allow for atomic-scale protein complex predictions,3 yet work needs to be done to refine,10,11 reranking,12 and structural refinement13 of the initial set of predictions. Structural

Weng, Zhiping

192

Refinement of the differential gravimetry approach for future inter-satellite observations Matthias Weigelt, Wolfgang Keller  

E-Print Network [OSTI]

Refinement of the differential gravimetry approach for future inter-satellite observations Matthias Applicability to GRACE ­ Follow On Refinement of the approach Conclusions: Loss of accuracy of several order. For the GRACE Follow-On mission this approach is not working anymore and thus a refinement of the solution

Stuttgart, Universität

193

A comparison of spectral element and finite difference methods using statically refined  

E-Print Network [OSTI]

A comparison of spectral element and finite difference methods using statically refined elements on a refined grid, using spectral method (polynomials of order p). · Accuracy convergence rate refinement dynamically or statically. Why considering spectral element? #12;Motivation · Since the main

Ng, Chung-Sang

194

Three Dimensional Adaptive Mesh Refinement on a Spherical Shell for Atmospheric Models with Lagrangian Coordinates  

E-Print Network [OSTI]

Three Dimensional Adaptive Mesh Refinement on a Spherical Shell for Atmospheric Models blocks and splits a block as refinements occur. The current functionality provides automatic generation the use of a longer time step. We have developed an Adaptive Mesh Refinement (AMR) dynamical core

Jablonowski, Christiane

195

ASSESSMENT AND REFINEMENT OF REAL-TIME TRAVEL TIME ALGORITHMS FOR USE  

E-Print Network [OSTI]

ASSESSMENT AND REFINEMENT OF REAL- TIME TRAVEL TIME ALGORITHMS FOR USE IN PRACTICE (OTREC PHASE I) Final Report #12;#12;ASSESSMENT AND REFINEMENT OF REAL-TIME TRAVEL TIME ALGORITHMS FOR USE IN PRACTICE ASSESSMENT AND REFINEMENT OF REAL-TIME TRAVEL TIME ALGORITHMS FOR USE IN PRACTICE (OTREC PHASE 1) 5. Report

Bertini, Robert L.

196

A Multi-Tiered Genetic Algorithm for Data Mining and Hypothesis Refinement  

E-Print Network [OSTI]

. The second stage of testing was on the ability to take results from a previous algorithm and perform refinement on the data model. Initially, Arcanum was used to refine its own data models. Of the six data models used for hypothesis refinement, Arcanum...

Taylor, Christopher M.

2009-01-01T23:59:59.000Z

197

Refining GAL4-Driven Transgene Expression in Drosophila With a GAL80 Enhancer-Trap  

E-Print Network [OSTI]

LETTER Refining GAL4-Driven Transgene Expression in Drosophila With a GAL80 Enhancer-trap element, P{GAL80}, that encodes the yeast GAL80 repressor to refine expression of transgenes driven neurons. This line was used to refine GFP expression from a set of over 200 neurons to a subset of 20

Sokolowski, Marla

198

Decorrelation of neural activity during fixational instability: Possible implications for the refinement  

E-Print Network [OSTI]

for the refinement of V1 receptive fields MICHELE RUCCI1 and ANTONINO CASILE2 1 Department of Cognitive and Neural June 10, 2004) Abstract Early in life, visual experience appears to influence the refinement in the experience-dependent refinement of cell response characteristics. To investigate the possible influences

Rucci, Michele

199

Comment on "Data for Refinement and Deposition/Publication" Mariusz Jaskolski (July 13, 2014)  

E-Print Network [OSTI]

Comment on "Data for Refinement and Deposition/Publication" Mariusz Jaskolski (July 13, 2014) 1. My and should be included in the refinement. Therefore, I do not truncate my data only because the high used in the refinement. 3. My leniency toward completeness at high-resolution does not extend

200

Linear iterative refinement method for the rapid simulation of borehole nuclear measurements: Part I --Vertical wells  

E-Print Network [OSTI]

Linear iterative refinement method for the rapid simulation of borehole nuclear measurements: Part a new linear iterative refinement method to simulate nuclear borehole measurements accurately included in the in- tegral form of Boltzmann's equation. The linear iterative refine- ment method accounts

Torres-VerdĂ­n, Carlos

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Refinement and verification of concurrent systems specified in ObjectZ and CSP  

E-Print Network [OSTI]

Refinement and verification of concurrent systems specified in Object­Z and CSP Graeme Smith­Z and CSP. A common semantic basis for the two languages enables a unified method of refinement to be used, based upon CSP refinement. To enable state­based techniques to be used for the Object­Z components

Smith, Graeme

202

Linear iterative refinement method for the rapid simulation of borehole nuclear measurements: Part 2 --High-angle and horizontal wells  

E-Print Network [OSTI]

Linear iterative refinement method for the rapid simulation of borehole nuclear measurements: Part refinement method to rapidly simulate borehole nuclear measurements acquired in vertical wells neutron and density measurements. Based on new research, we implemented the linear iterative refinement

Torres-VerdĂ­n, Carlos

203

Evolving a puncture black hole with fixed mesh refinement  

E-Print Network [OSTI]

We present an algorithm for treating mesh refinement interfaces in numerical relativity. We detail the behavior of the solution near such interfaces located in the strong field regions of dynamical black hole spacetimes, with particular attention to the convergence properties of the simulations. In our applications of this technique to the evolution of puncture initial data with vanishing shift, we demonstrate that it is possible to simultaneously maintain second order convergence near the puncture and extend the outer boundary beyond 100M, thereby approaching the asymptotically flat region in which boundary condition problems are less difficult and wave extraction is meaningful.

Breno Imbiriba; John Baker; Dae-Il Choi; Joan Centrella; David R. Fiske; J. David Brown; James R. van Meter; Kevin Olson

2006-02-03T23:59:59.000Z

204

Exact results on ABJ theory and the refined topological string  

E-Print Network [OSTI]

We study the partition function of the ABJ theory, which is the N=6 superconformal Chern-Simons matter theory with gauge group U(N)xU(N+M) and Chern-Simons levels (k,-k). We exactly compute the ABJ partition function on a three sphere for various k, M and N via the Fermi gas approach. By using these exact data, we show that the ABJ partition function is completely determined by the refined topological string on local P^1 x P^1, including membrane instanton effects in the M-theory dual.

Masazumi Honda; Kazumi Okuyama

2014-07-22T23:59:59.000Z

205

Bethe roots and refined enumeration of alternating-sign matrices  

E-Print Network [OSTI]

The properties of the most probable ground state candidate for the XXZ spin chain with the anisotropy parameter equal to -1/2 and an odd number of sites is considered. Some linear combinations of the components of the considered state, divided by the maximal component, coincide with the elementary symmetric polynomials in the corresponding Bethe roots. It is proved that those polynomials are equal to the numbers providing the refined enumeration of the alternating-sign matrices of order M+1 divided by the total number of the alternating-sign matrices of order M, for the chain of length 2M+1.

A. V. Razumov; Yu. G. Stroganov

2006-05-12T23:59:59.000Z

206

Changing Trends in the Refining Industry (released in AEO2006)  

Reports and Publications (EIA)

There have been some major changes in the U.S. refining industry recently, prompted in part by a significant decline in the quality of imported crude oil and by increasing restrictions on the quality of finished products. As a result, high-quality crudes, such as the West Texas Intermediate (WTI) crude that serves as a benchmark for oil futures on the New York Mercantile Exchange (NYMEX), have been trading at record premiums to the OPEC (Organization of the Petroleum Exporting Countries) Basket price.

2006-01-01T23:59:59.000Z

207

Cogeneration handbook for the petroleum refining industry. [Contains glossary  

SciTech Connect (OSTI)

The decision of whether to cogenerate involves several considerations, including technical, economic, environmental, legal, and regulatory issues. Each of these issues is addressed separately in this handbook. In addition, a chapter is included on preparing a three-phase work statement, which is needed to guide the design of a cogeneration system. In addition, an annotated bibliography and a glossary of terminology are provided. Appendix A provides an energy-use profile of the petroleum refining industry. Appendices B through O provide specific information that will be called out in subsequent chapters.

Fassbender, L.L.; Garrett-Price, B.A.; Moore, N.L.; Fassbender, A.G.; Eakin, D.E.; Gorges, H.A.

1984-03-01T23:59:59.000Z

208

Electrode compositions  

DOE Patents [OSTI]

An electrode composition is described for use as an electrode in a non-aqueous battery system. The electrode composition contains an electrically active powder in a solid polymer and, as a dispersant, a C{sub 8}-C{sub 15} alkyl capped oligomer of a hexanoic acid that is electrochemically inert at 2.5--4.5 volts.

Block, J.; Fan, X.

1998-10-27T23:59:59.000Z

209

The refined transfer, bundle structures and algebraic K-theory.  

E-Print Network [OSTI]

We give new homotopy theoretic criteria for deciding when a fibration with homotopy finite fibers admits a reduction to a fiber bundle with compact topological manifold fibers. The criteria lead to a new and unexpected result about homeomorphism groups of manifolds. A tool used in the proof is a surjective splitting of the assembly map for Waldhausen's functor A(X). We also give concrete examples of fibrations having a reduction to a fiber bundle with compact topological manifold fibers but which fail to admit a compact fiber smoothing. The examples are detected by algebraic K-theory invariants. We consider a refinement of the Becker-Gottlieb transfer. We show that a version of the axioms described by Becker and Schultz uniquely determines the refined transfer for the class of fibrations admitting a reduction to a fiber bundle with compact topological manifold fibers. In an appendix, we sketch a theory of characteristic classes for fibrations. The classes are primary obstructions to finding a compact fiber smoothing.

John R. Klein; Bruce Williams

210

Adaptive Mesh Refinement for Supersonic Molecular Cloud Turbulence  

E-Print Network [OSTI]

We performed a series of three-dimensional numerical simulations of supersonic homogeneous Euler turbulence with adaptive mesh refinement (AMR) and effective grid resolution up to 1024^3 zones. Our experiments describe non-magnetized driven supersonic turbulent flows with an isothermal equation of state. Mesh refinement on shocks and shear is implemented to cover dynamically important structures with the highest resolution subgrids and calibrated to match the turbulence statistics obtained from the equivalent uniform grid simulations. We found that at a level of resolution slightly below 512^3, when a sufficient integral/dissipation scale separation is first achieved, the fraction of the box volume covered by the AMR subgrids first becomes smaller than unity. At the higher AMR levels subgrids start covering smaller and smaller fractions of the whole volume, which scale with the Reynolds number as Re^{-1/4}. We demonstrate the consistency of this scaling with a hypothesis that the most dynamically important structures in intermittent supersonic turbulence are strong shocks with a fractal dimension of two. We show that turbulence statistics derived from AMR simulations and simulations performed on uniform grids agree surprisingly well, even though only a fraction of the volume is covered by AMR subgrids. Based on these results, we discuss the signature of dissipative structures in the statistical properties of supersonic turbulence and their role in overall flow dynamics.

Alexei G. Kritsuk; Michael L. Norman; Paolo Padoan

2005-06-02T23:59:59.000Z

211

A refined model for characterizing x-ray multilayers  

SciTech Connect (OSTI)

The ability to quickly and accurately characterize arbitrary multilayers is very valuable for not only can we use the characterizations to predict the reflectivity of a multilayer for any soft x-ray wavelength, we also can generalize the results to apply to other multilayers of the same type. In addition, we can use the characterizations as a means of evaluating various sputtering environments and refining sputtering techniques to obtain better multilayers. In this report we have obtained improved characterizations for sample molybdenum-silicon and vanadium-silicon multilayers. However, we only examined five crystals overall, so the conclusions that we could draw about the structure of general multilayers is limited. Research involving many multilayers manufactured under the same sputtering conditions is clearly in order. In order to best understand multilayer structures it may be necessary to further refine our model, e.g., adopting a Gaussian form for the interface regions. With such improvements we can expect even better agreement with experimental values and continued concurrence with other characterization techniques. 18 refs., 30 figs., 7 tabs.

Oren, A.L.; Henke, B.L.

1987-12-01T23:59:59.000Z

212

California refiners move smoothly into next phase of RFG  

SciTech Connect (OSTI)

The California RFG program (CARB RFG) began at the refinery level in March, the terminal level in April and will begin being enforced at the retail level June 1. By all accounts, early implementation is proceeding smoothly, with prices for both gasoline and oxygenates remaining fairly steady. Analysts labeled the introduction of the world`s cleanest gasoline {open_quotes}a non-event{close_quotes}. By April 1, more than half of the retail gasoline stations in California had fully complying CARB RFG. With cumulative investments of more than $3 billion, California`s refiners will be looking to recapture as much of the cost in the marketplace as possible. The incremental cost of CARB RFG production over federal RFG is estimated by refiners to be about 10{cents}/gal, mainly due to the capital investments needed for hydrotreating to reduce sulfur levels. Early batches of fuel on the spot market sold for about 8{cents}/gal over conventional prices, about 4.5{cents}/gal above federal RFG, according to the Oil Price Information Service (OPIS).

Schaffer, S. [ed.

1996-05-01T23:59:59.000Z

213

Bitumen composition  

SciTech Connect (OSTI)

This patent describes a bitumen composition. It comprises: asphalt and from about 1 wt.% to about 10 wt.%, based on asphalt, of an {alpha} -olefin polymer having a molecular weight within the range from about 750 to 5000.

Halasz, A.; Spinell, G.; Doolittle, D.H.

1989-11-07T23:59:59.000Z

214

Impact of Environmental Compliance Costs on U.S. Refining Profitability 1995-2001  

Reports and Publications (EIA)

This report assesses the effects of pollution abatement requirements on the financial performance of U.S. petroleum refining and marketing operations during the 1995 to 2001 period. This study is a follow-up to the October 1997 publication entitled The Impact of Environmental Compliance Costs on U.S. Refining Profitability, that focused on the financial impacts of U.S. refining pollution abatement investment requirements in the 1988 to1995 period.

2003-01-01T23:59:59.000Z

215

Linkages between the markets for crude oil and the markets for refined products  

SciTech Connect (OSTI)

To understand the crude oil price determination process it is necessary to extend the analysis beyond the markets for petroleum. Crude oil prices are determined in two closely related markets: the markets for crude oil and the markets for refined products. An econometric-linear programming model was developed to capture the linkages between the markets for crude oil and refined products. In the LP refiners maximize profits given crude oil supplies, refining capacities, and prices of refined products. The objective function is profit maximization net of crude oil prices. The shadow price on crude oil gives the netback price. Refined product prices are obtained from the econometric models. The model covers the free world divided in five regions. The model is used to analyze the impacts on the markets of policies that affect crude oil supplies, the demands for refined products, and the refining industry. For each scenario analyzed the demand for crude oil is derived from the equilibrium conditions in the markets for products. The demand curve is confronted with a supply curve which maximizes revenues providing an equilibrium solution for both crude oil and product markets. The model also captures crude oil price differentials by quality. The results show that the demands for crude oil are different across regions due to the structure of the refining industries and the characteristics of the demands for refined products. Changes in the demands for products have a larger impact on the markets than changes in the refining industry. Since markets for refined products and crude oil are interrelated they can't be analyzed individually if an accurate and complete assessment of a policy is to be made. Changes in only one product market in one region affect the other product markets and the prices of crude oil.

Didziulis, V.S.

1990-01-01T23:59:59.000Z

216

Decontamination and decarburization of stainless and carbon steel by melt refining  

SciTech Connect (OSTI)

With many nuclear reactors and facilities being decommissioned in the next ten to twenty years the concern for handling and storing Radioactive Scrap Metal (RSM) is growing. Upon direction of the DOE Office of Environmental Restoration and Waste Management, Lockheed Idaho Technology Company (LITCO) is developing technologies for the conditioning of spent fuels and high-level wastes for interim storage and repository acceptance, including the recycling of Radioactive Scrap Metals (RSM) for beneficial reuse with the DOE complex. In February 1993, Montana Tech of the University of Montana was contracted to develop and demonstrate technologies for the decontamination of stainless steel RSM. The general objectives of the Montana Tech research program included conducting a literature survey, performing laboratory scale melt refining experiments to optimize decontaminating slag compositions, performing an analysis of preferred melting techniques, coordinating pilot scale and commercial scale demonstrations, and producing sufficient quantities of surrogate-containing material for all of the laboratory, pilot and commercial scale test programs. Later on, the program was expanded to include decontamination of carbon steel RSM. Each research program has been completed, and results are presented in this report.

Mizia, R.E.; Worcester, S.A.; Twidwell, L.G.; Webber, D.; Paolini, D.J.; Weldon, T.A.

1996-09-05T23:59:59.000Z

217

Decontamination of metals by melt refinings/slagging: An annotated bibliography  

SciTech Connect (OSTI)

As the number of nuclear installations undergoing decontamination and decommissioning (D&D) increases, current radioactive waste storage space is consumed and establishment of new waste storage areas becomes increasingly difficult, the problem of handling and storing radioactive scrap metal (RSM) gains increasing importance in the DOE Environmental Restoration and Waste Management Program. To alleviate present and future waste storage problems, Westinghouse Idaho Nuclear Company (WINCO) is managing a program for the recycling of RSM for beneficial use within the DOE complex. As part of that effort, Montana Tech has been awarded a contract to help optimize melting and refining technology for the recycling of stainless steel RSM. The scope of the Montana Tech program includes a literature survey, a decontaminating slag design study, small scale melting studies to determine optimum slag compositions for removal of radioactive contaminant surrogates, analysis of preferred melting techniques, and coordination of large scale melting demonstrations (100--500 lbs) to be conducted at selected facilities. The program will support recycling and decontaminating stainless steel RSM for use in waste canisters for Idaho Waste Immobilization Facility densified high level waste. This report is the result of the literature search conducted to establish a basis for experimental melt/slag program development.

Mizia, R.E. [ed.; Worcester, S.A.; Twidwell, L.G.; Paolini, D.J.; Weldon, T.A.

1993-07-01T23:59:59.000Z

218

Hydride compositions  

DOE Patents [OSTI]

Disclosed are a composition for use in storing hydrogen and a method for making the composition. The composition comprises a mixture of two or more hydrides, each hydride having a different series of hydrogen sorption isotherms that contribute to the overall isotherms of the mixture. The hydrides are chosen so that the isotherms of the mixture have regions wherein the H equilibrium pressure increases with increasing hydrogen, preferably linearly. The isotherms of the mixture can be adjusted by selecting hydrides with different isotherms and by varying the amounts of the individual hydrides, or both. Preferably, the mixture is made up of hydrides that have isotherms with substantially flat plateaus and in nearly equimolar amounts. The composition is activated by degassing, exposing to H, and then heating below the softening temperature of any of the constituents. When the composition is used to store hydrogen, its hydrogen content can be found simply by measuring P{sub H}{sub 2} and determining H/M from the isothermic function of the composition.

Lee, Myung, W.

1994-01-01T23:59:59.000Z

219

The uses of the refined matrix model recursion  

E-Print Network [OSTI]

We study matrix models in the beta ensemble by building on the refined recursion relation proposed by Chekhov and Eynard. We present explicit results for the first beta-deformed corrections in the one-cut and the two-cut cases, as well as two applications to supersymmetric gauge theories: the calculation of superpotentials in N=1 gauge theories, and the calculation of vevs of surface operators in superconformal N=2 theories and their Liouville duals. Finally, we study the beta deformation of the Chern-Simons matrix model. Our results indicate that this model does not provide an appropriate description of the Omega-deformed topological string on the resolved conifold, and therefore that the beta-deformation might provide a different generalization of topological string theory in toric Calabi-Yau backgrounds.

Andrea Brini; Marcos Marino; Sebastien Stevan

2014-06-11T23:59:59.000Z

220

Fuel and oxygen addition for metal smelting or refining process  

DOE Patents [OSTI]

A furnace 10 for smelting iron ore and/or refining molten iron 20 is equipped with an overhead pneumatic lance 40, through which a center stream of particulate coal 53 is ejected at high velocity into a slag layer 30. An annular stream of nitrogen or argon 51 enshrouds the coal stream. Oxygen 52 is simultaneously ejected in an annular stream encircling the inert gas stream 51. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it is needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus 84 to react with carbon monoxide gas rising from slag layer 30, thereby adding still more heat to the furnace.

Schlichting, Mark R. (Chesterton, IN)

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Refinements in Effective Potential Calculations in the MSSM  

E-Print Network [OSTI]

The one-loop effective potential is a powerful tool in studying the electroweak symmetry breaking of supersymmetric theories, whose precise calculation may have important phenomenological consequences. In this work, we are correctly treating the contribution of the Higgs sector to the effective potential and refine the radiative corrections to the Higgs mixing parameter $\\mu$, which is known to affect greatly the supersymmetric spectrum. Working at the average stop scale to minimize the effect of the stop sector, we find additional corrections which can play a dominant role in the Focus Point region of the parameter space of the MSSM. The comparison of our results with those of the literature is discussed. We also discuss the gauge dependence of the effective potential and its effect on the $\\mu$ parameter in analyses where this is determined from the 1-loop minimization conditions of the effective potential.

M. Argyrou; A. Katsikatsou; I. Malamos

2006-02-17T23:59:59.000Z

222

Refinements in electroweak contributions to the muon anomalous magnetic moment  

E-Print Network [OSTI]

Effects of strong interactions on the two loop electroweak radiative corrections to the muon anomalous magnetic moment, $a_\\mu=(g_\\mu-2)/2$, are examined. Short-distance logs are shown to be unaffected. Computation of long-distance contributions is improved by use of an effective field theory approach that preserves the chiral properties of QCD and accounts for constraints from the operator product expansion. Small, previously neglected, two loop contributions, suppressed by a $1-4\\sin^2\\theta_W$ factor, are computed and the complete three loop leading short-distance logs are reevaluated. These refinements lead to a reduction in uncertainties and a slight shift in the total electroweak contribution to $a_\\mu^{\\rm EW} = 154(1)(2)\\times 10^{-11}$ where the first error corresponds to hadronic uncertainties and the second is primarily due to the allowed Higgs mass range.

Andrzej Czarnecki; William J. Marciano; Arkady Vainshtein

2006-05-19T23:59:59.000Z

223

Fuel and oxygen addition for metal smelting or refining process  

DOE Patents [OSTI]

A furnace for smelting iron ore and/or refining molten iron is equipped with an overhead pneumatic lance, through which a center stream of particulate coal is ejected at high velocity into a slag layer. An annular stream of nitrogen or argon enshrouds the coal stream. Oxygen is simultaneously ejected in an annular stream encircling the inert gas stream. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it is needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus to react with carbon monoxide gas rising from slag layer, thereby adding still more heat to the furnace. 7 figs.

Schlichting, M.R.

1994-11-22T23:59:59.000Z

224

Global refining beyond the year 2000 - A European perspective  

SciTech Connect (OSTI)

A new French publication from Editions Technip contains a broad-based discussion on the economic and processing parameters that will shape the refinery of the future. Process experts from Institut Francais Du Petrole (IFP) have constructed a {open_quotes}road map{close_quotes} for refining and petrochemical flow schemes that should interest industry planners and decision makers throughout the world. The importance attributed to the characterization of crude oils and petroleum products is stressed. On a directional basis, the industry will see more emphasis on methodologies to improve existing conversion and separation processes. Buzzwords such as biorefining, refinery integrated information systems, petrochemical/refinery integration and many others will find a forum in future publications.

Gonzalez, R.G. [ed.

1996-01-01T23:59:59.000Z

225

Quantitative Methods for Strategic and Investment Planning in the Oil-Refining  

E-Print Network [OSTI]

by one refinery Refinery Opera*onal Planning - Simulate the Refining Scenarios Supply Chain Investments Planning - Test the refinery best scenarios

Grossmann, Ignacio E.

226

E-Print Network 3.0 - administered refined olive Sample Search...  

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

refined olive Page: << < 1 2 3 4 5 > >> 1 EUROMED SUSTAINABLE CONNECTIONS ANNA LINDH FOUNDATION Summary: most common to the Mediterranean region - the production of Olive Oil. The...

227

Refining and Extending the Business Model with Information Technology: Dell Computer Corporation  

E-Print Network [OSTI]

of Dell’s Direct Business Model Fuels Fifteenth ConsecutiveAND EXTENDING THE REFINING AND EXTENDING THE BUSINESS MODELBUSINESS MODEL CENTER FOR RESEARCH ON INFORMATION TECHNOLOGY

Kraemer, Kenneth L; Dedrick, Jason; Yamashiro, Sandra

1999-01-01T23:59:59.000Z

228

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

Gasoline and Diesel Fuel Update (EIA)

Petroleum Marketing Annual 1998 295 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) - Continued...

229

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

Gasoline and Diesel Fuel Update (EIA)

Petroleum Marketing Annual 1995 337 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) - Continued...

230

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

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

Petroleum Marketing Annual 1999 295 Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State (Thousand Gallons per Day) - Continued...

231

Table A3. Refiner/Reseller Prices of Distillate and Residual...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Marketing Annual 1999 441 Table A3. RefinerReseller Prices of Distillate and Residual Fuel Oils, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) - Continued...

232

Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...  

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

Information Administration Petroleum Marketing Annual 1995 Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type (Million Gallons per Day) - Continued Year...

233

Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...  

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

AdministrationPetroleum Marketing Annual 1999 401 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon...

234

Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Information Administration Petroleum Marketing Annual 1995 Table A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District and State, 1984-Present (Cents per Gallon...

235

Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...  

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

Energy Information AdministrationPetroleum Marketing Annual 1999 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

236

Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...  

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

AdministrationPetroleum Marketing Annual 1999 Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) Year Month...

237

Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...  

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

Energy Information AdministrationPetroleum Marketing Annual 1998 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

238

Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...  

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

Energy Information AdministrationPetroleum Marketing Annual 1998 Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type (Million Gallons per Day) - Continued Year...

239

Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...  

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

Information Administration Petroleum Marketing Annual 1995 Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type (Cents per Gallon Excluding Taxes) - Continued...

240

E-Print Network 3.0 - alloys grain refinement Sample Search Results  

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

in iron substitutional alloys (Grain size effects on iron... ;14 Objective Grain Size Varistors Hall- Petch Creep Grain refinement A crucial engineering consequence... of the...

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

E-Print Network 3.0 - alloy grain refined Sample Search Results  

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

in iron substitutional alloys (Grain size effects on iron... ;14 Objective Grain Size Varistors Hall- Petch Creep Grain refinement A crucial engineering consequence... of the...

242

E-Print Network 3.0 - amerya petroleum refining Sample Search...  

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

11 DOEBCW-31-109-Eng-38-1 (DE96001296) Summary: and Solutions in Exploration, Production and Refining, proceedings of the Second International Petroleum... , Production and...

243

Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Marketing Annual 1995 467 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

244

Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...  

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

Marketing Annual 1999 421 Table A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) -...

245

Phosphorescent compositions, methods of making the compositions, and methods of using the compositions  

SciTech Connect (OSTI)

Compositions, methods of making compositions, materials including compositions, crayons including compositions, paint including compositions, ink including compositions, waxes including compositions, polymers including compositions, vesicles including the compositions, methods of making each, and the like are disclosed.

Jia, Weiyi; Wang, Xiaojun; Jia, George D.; Lewis, Linda; Yen, Laurel C.

2014-06-24T23:59:59.000Z

246

Photoimageable composition  

DOE Patents [OSTI]

The use of photoacid generators including an alkoxyphenylphenyliodonium salt and/or bis(t-butylphenyl)iodonium salt in a photoimageable composition helps improve resolution. Suitable photoimageable compositions includes: (a) a multifuctional polymeric epoxy resin that is dissolved in an organic solvent wherein the epoxy resin comprises oligomers of bisphenol A that is quantitatively protected by glycidyl ether and wherein the oligomers have an average functionality that ranges from about 3 to 12; and a photoacid generator comprising an alkoxyphenylphenyliodonium salt and/or bis(t-butylphenyl)iodonium salt. Preferred alkoxyphenylphenyliodonium salts include 4-octyloxyphenyl phenyliodonium hexafluoroantimonate and 4-methoxyphenyl phenyliodonium hexafluoroantimonate. The photoimageable composition is particularly suited for producing high aspect ratio microstructures.

Dentinger, Paul; Krafick, Karen L.; Simison, Kelby Liv

2005-02-22T23:59:59.000Z

247

Photoimageable composition  

DOE Patents [OSTI]

The use of selected buffering amines in a photoimageable composition prevents process bias which with conventional photoresists causes designed features to be distorted, especially in corners and high resolution features. It is believed that the amines react with the catalysts, e.g., photoacids, generated to create an inert salt. The presence of the amines also increases resolution. Suitable photoimageable compositions includes: (a) a multifunctional polymeric epoxy resin that is dissolved in an organic solvent wherein the epoxy resin comprises oligomers of bisphenol A that is quantitatively protected by glycidyl ether and wherein the oligomers have an average functionality that ranges from about 3 to 12; (b) a photoactive compound; and (c) an amine that is selected from the group consisting of triisobutylamine, 1,8-bis(dimethylamino)naphthalene (also known as PROTON SPONGET.TM.), 2,2'-diazabicyclo[2.2.2] octane and mixtures thereof. The photoimageable composition is particularly suited for producing high aspect ratio metal microstructures.

Simison, Kelby Liv; Dentinger, Paul

2003-11-11T23:59:59.000Z

248

Relation between fuel properties and chemical composition. II. Chemical characterization of US Navy Shale-II fuels  

SciTech Connect (OSTI)

The Navy has completed two crude production/refining exercises with shale. The first of these was a 10,000 barrel operation (Shale-I). The second, a 73,000 barrel operation (Shale-II), was completed in 1979 at the Toledo refinery of Sohio. This paper describes the chemical characterization of the JP-5 and DFM from the Shale-II project. The information presented in this paper shows that shale oil has an excellent potential as a source for high quality middle distillate fuels. The composition of such fuels may vary widely, however, depending on the overall refining process. Much work is needed to explore other refining options and to examine the effect of refining on finished fuel composition and properties.

Solash, J.; Hazlett, R.N.; Burnett, J.C.; Beal, E.; Hall, J.M.

1980-01-01T23:59:59.000Z

249

More evidence for a refined Gribov-Zwanziger action based on an effective potential approach  

E-Print Network [OSTI]

The purpose of this proceeding is twofold. Firstly, we shall make the refining of the Gribov-Zwanziger action more complete by taking into account more condensates than considered so far. Secondly, we shall provide more evidence for the refined Gribov-Zwanziger action based on an effective potential approach.

N. Vandersickel; D. Dudal; S. P. Sorella

2011-02-04T23:59:59.000Z

250

Aspects of Western Refining, Inc.'s Proposed Acquisition of Giant Industries, Inc.  

Reports and Publications (EIA)

Presentation of company-level, non-proprietary data and relevant aggregate data for U.S. refinery capacity and gasoline marketing of Western Refining and Giant Industries to inform discussions of Western Refining Inc.'s proposed acquisition of Giant Industries Inc. for a total of $1.5 billion, which was announced August 28, 2006.

2006-01-01T23:59:59.000Z

251

Effects of wastewater from an oil-sand-refining operation on survival, hematology, gill histology,  

E-Print Network [OSTI]

Effects of wastewater from an oil-sand-refining operation on survival, hematology, gill histology the effects of various types of wastewater produced in oil-sand-refining on the survival, hematology, gill. In con- trast, all fish did not survive a 28-day period in any of the wastewaters tested and, in some

Farrell, Anthony P.

252

To appear in EPTCS. A CSP account of Event-B refinement  

E-Print Network [OSTI]

To appear in EPTCS. A CSP account of Event-B refinement Steve Schneider Department of Computing a CSP account of Event-B refinement, with a treatment for the first time of splitting events and of anticipated events. To this end, we define a CSP seman- tics for Event-B and show how the different forms

Doran, Simon J.

253

FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,  

E-Print Network [OSTI]

FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its in- ternal representation of CSP processes

Oxford, University of

254

FDR3 --A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong,  

E-Print Network [OSTI]

FDR3 -- A Modern Refinement Checker for CSP Thomas Gibson-Robinson, Philip Armstrong, Alexandre.roscoe}@cs.ox.ac.uk Abstract. FDR3 is a complete rewrite of the CSP refinement checker FDR2, incorporating a significant number describe the new algorithm that FDR3 uses to construct its internal representation of CSP processes

Oxford, University of

255

Transformation Composition  

E-Print Network [OSTI]

Proc. AGTIVE'99, to appear in LNCS Graph Transformation Modules and their Composition ? Frank,knirsch,kreo,kuskeg@informatik.uni-bremen.de Abstract. In this paper, we investigate the notion of transformation modules as a structuring principle. Based on the notion of transformation units, a concept that allows to specify binary relations on graphs

Drewes, Frank

256

Refinement of the $n-?$ and $p-?$ fish-bone potential  

E-Print Network [OSTI]

The fishbone potential of composite particles simulates the Pauli effect by nonlocal terms. We determine the $n-\\alpha$ and $p-\\alpha$ fish-bone potential by simultaneously fitting to the experimental phase shifts. We found that with a double Gaussian parametrization of the local potential can describe the $n-\\alpha$ and $p-\\alpha$ phase shifts for all partial waves.

E. Smith; R. Woodhouse; Z. Papp

2012-09-04T23:59:59.000Z

257

Natural solution in the refined Gribov-Zwanziger theory  

E-Print Network [OSTI]

We analyse the one loop effective action of the Gribov-Zwanziger Lagrangian and use the local composite operator formalism to include the most general Becchi-Rouet-Stora-Tyutin (BRST) dimension two mass operator for the localizing ghost fields. We show that the energetically favourable colour channel corresponds to what is known as the R direction.

D. J. Thelan; J. A. Gracey

2014-04-25T23:59:59.000Z

258

Refined Properties of the HD 130322 Planetary System  

E-Print Network [OSTI]

Exoplanetary systems closest to the Sun, with the brightest host stars, provide the most favorable opportunities for characterization studies of the host star and their planet(s). The Transit Ephemeris Refinement and Monitoring Survey uses both new radial velocity measurements and photometry in order to greatly improve planetary orbit uncertainties and the fundamental properties of the star, in this case HD 130322. The only companion, HD 130322b, orbits in a relatively circular orbit, e = 0.029 every ~10.7 days. Radial velocity measurements from multiple sources, including 12 unpublished from the Keck I telescope, over the course of ~14 years have reduced the uncertainty in the transit midpoint to ~2 hours. The transit probability for the b-companion is 4.7%, where M_p sin i = 1.15 M_J and a = 0.0925 AU. In this paper, we compile photometric data from the T11 0.8m Automated Photoelectric Telescope at Fairborn Observatory taken over ~14 years, including the constrained transit window, which results in a dispos...

Hinkel, Natalie R; Henry, Gregory W; Feng, Y Katherina; Boyajian, Tabetha; Wright, Jason; Fischer, Debra A; Howard, Andrew W

2015-01-01T23:59:59.000Z

259

Cosmos++: Relativistic Magnetohydrodynamics on Unstructured Grids with Local Adaptive Refinement  

E-Print Network [OSTI]

A new code and methodology are introduced for solving the general relativistic magnetohydrodynamic (GRMHD) equations in fixed background spacetimes using time-explicit, finite-volume discretization. The code has options for solving the GRMHD equations using traditional artificial-viscosity (AV) or non-oscillatory central difference (NOCD) methods, or a new extended AV (eAV) scheme using artificial-viscosity together with a dual energy-flux-conserving formulation. The dual energy approach allows for accurate modeling of highly relativistic flows at boost factors well beyond what has been achieved to date by standard artificial viscosity methods. It provides the benefit of Godunov methods in capturing high Lorentz boosted flows but without complicated Riemann solvers, and the advantages of traditional artificial viscosity methods in their speed and flexibility. Additionally, the GRMHD equations are solved on an unstructured grid that supports local adaptive mesh refinement using a fully threaded oct-tree (in three dimensions) network to traverse the grid hierarchy across levels and immediate neighbors. A number of tests are presented to demonstrate robustness of the numerical algorithms and adaptive mesh framework over a wide spectrum of problems, boosts, and astrophysical applications, including relativistic shock tubes, shock collisions, magnetosonic shocks, Alfven wave propagation, blast waves, magnetized Bondi flow, and the magneto-rotational instability in Kerr black hole spacetimes.

Peter Anninos; P. Chris Fragile; Jay D. Salmonson

2005-09-09T23:59:59.000Z

260

Simulation of multicomponent evaporation in electron beam melting and refining  

SciTech Connect (OSTI)

Experimental results and a mathematical model are presented to describe differential evaporation rates in electron beam melting of titanium alloys containing aluminum and vanadium. Experiments characterized the evaporation rate of commercially pure titanium, and vapor composition over titanium with up to 6% Al and 4.5% V content as a function of beam power, scan frequency and background pressure. The model is made up of a steady-state heat and mass transport model of a melting hearth and a model of transient thermal and flow behavior near the surface. Activity coefficients for aluminum and vanadium in titanium are roughly estimated by fitting model parameters to experimental results. Based on the ability to vary evaporation rate by 10-15% using scan frequency alone, we discuss the possibility of on-line composition control by means of intelligent manipulation of the electron beam.

Powell, A.; Szekely, J. [Massachusetts Inst. of Tech., Cambridge, MA (United States); Van Den Avyle, J.; Damkroger, B. [Sandia National Labs., Albuquerque, NM (United States)

1996-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Model Refinement Needs A model developed by Peters and Marmorek (2003) will be used to generate predictions for  

E-Print Network [OSTI]

449 Model Refinement Needs A model developed by Peters and Marmorek (2003) will be used to generate and will enable us in a future project to develop a refined model to evaluate reintroduction of sockeye

262

Refining the fundamental plane of accreting black holes  

E-Print Network [OSTI]

The idea of a unified description of supermassive and stellar black holes has been supported by the extension of the empirical radio/X-ray correlation from X-ray binaries to active galactic nuclei through the inclusion of a mass term. This has lead to the so-called fundamental plane of black hole activity in the black hole mass, radio and X-ray luminosity space. Two incarnations of this fundamental plane have so far been suggested using different underlying models and using two different samples of accreting black holes. We present revised samples for both studies together with a refined statistical analysis using measured errors of the observables. This method is used to compare the two samples, discuss selection effects, and infer parameters for the fundamental plane in a homogeneous way. We show that strongly sub-Eddington objects in a state equivalent to the low/hard state of X-ray binaries follow the fundamental plane very tightly; the scatter is comparable to the measurement errors. However, we find that the estimated parameters depend strongly on the assumptions made on the sources of scatter and the relative weight of the different AGN classes in the sample. Using only hard state objects, the fundamental plane is in agreement with the prediction of a simple uncooled synchrotron/jet model for the emitted radiation. Inclusion of high-state objects increases the scatter and moves the correlation closer to a disk/jet model. This is qualitatively consistent with a picture where low-state objects are largely dominated by jet emission while high-state objects have a strong contribution from an accretion disk.

Elmar Koerding; Heino Falcke; Sephane Corbel

2006-03-05T23:59:59.000Z

263

RAM: a Relativistic Adaptive Mesh Refinement Hydrodynamics Code  

SciTech Connect (OSTI)

The authors have developed a new computer code, RAM, to solve the conservative equations of special relativistic hydrodynamics (SRHD) using adaptive mesh refinement (AMR) on parallel computers. They have implemented a characteristic-wise, finite difference, weighted essentially non-oscillatory (WENO) scheme using the full characteristic decomposition of the SRHD equations to achieve fifth-order accuracy in space. For time integration they use the method of lines with a third-order total variation diminishing (TVD) Runge-Kutta scheme. They have also implemented fourth and fifth order Runge-Kutta time integration schemes for comparison. The implementation of AMR and parallelization is based on the FLASH code. RAM is modular and includes the capability to easily swap hydrodynamics solvers, reconstruction methods and physics modules. In addition to WENO they have implemented a finite volume module with the piecewise parabolic method (PPM) for reconstruction and the modified Marquina approximate Riemann solver to work with TVD Runge-Kutta time integration. They examine the difficulty of accurately simulating shear flows in numerical relativistic hydrodynamics codes. They show that under-resolved simulations of simple test problems with transverse velocity components produce incorrect results and demonstrate the ability of RAM to correctly solve these problems. RAM has been tested in one, two and three dimensions and in Cartesian, cylindrical and spherical coordinates. they have demonstrated fifth-order accuracy for WENO in one and two dimensions and performed detailed comparison with other schemes for which they show significantly lower convergence rates. Extensive testing is presented demonstrating the ability of RAM to address challenging open questions in relativistic astrophysics.

Zhang, Wei-Qun; /KIPAC, Menlo Park; MacFadyen, Andrew I.; /Princeton, Inst. Advanced Study

2005-06-06T23:59:59.000Z

264

State of heavy oil production and refining in California  

SciTech Connect (OSTI)

California is unique in the United States because it has the largest heavy oil (10{degrees} to 20{degrees}API gravity) resource, estimated to be in excess of 40 billion barrels. Of the current 941,543 barrels/day of oil produced in California (14% of the U.S. total), 70% or 625,312 barrels/day is heavy oil. Heavy oil constituted only 20% of California`s oil production in the early 1940s, but development of thermal oil production technology in the 1960s allowed the heavy industry to grow and prosper to the point where by the mid-1980s, heavy oil constituted 70% of the state`s oil production. Similar to the rest of the United States, light oil production in the Los Angeles Basin, Coastal Region, and San Joaquin Valley peaked and then declined at different times throughout the past 30 years. Unlike other states, California developed a heavy oil industry that replaced declining light oil production and increased the states total oil production, despite low heavy oil prices, stringent environmental regulations and long and costly delays in developing known oil resources. California`s deep conversion refineries process the nation`s highest sulfur, lowest API gravity crude to make the cleanest transportation fuels available. More efficient vehicles burning cleaner reformulated fuels have significantly reduced the level of ozone precursors (the main contributor to California`s air pollution) and have improved air quality over the last 20 years. In a state where major oil companies dominate, the infrastructure is highly dependent on the 60% of ANS production being refined in California, and California`s own oil production. When this oil is combined with the small volume of imported crude, a local surplus of marketed oil exists that inhibits exploitation of California`s heavy oil resources. As ANS production declines, or if the export restrictions on ANS sales are lifted, a window of opportunity develops for increased heavy oil production.

Olsen, D.K.; Ramzel, E.B. [BDM-Oklahoma, Inc., Bartlesville, OK (United States)

1995-12-31T23:59:59.000Z

265

On Some Computations of Higher Rank Refined Donaldson-Thomas Invariants  

E-Print Network [OSTI]

We present some computations of higher rank refined Donaldson-Thomas invariants on local curve geometries, corresponding to local D6-D2-D0 or D4-D2-D0 configurations. A refined wall-crossing formula for invariants with higher D6 or D4 ranks is derived and verified to agree with the existing formulas under the unrefined limit. Using the formula, refined invariants on the $(-1,-1)$ and $(-2,0)$ local rational curve with higher D6 or D4 ranks are computed.

Wu-yen Chuang; Chien-Hsun Wang

2014-09-08T23:59:59.000Z

266

Influence of Aluminum Content on Grain Refinement and Strength of AZ31 Magnesium GTA Weld Metal  

SciTech Connect (OSTI)

The goal is to characterize the effect of Al content on AZ31 weld metal, the grain size and strength, and examine role of Al on grain refinement. The approach is to systematically vary the aluminum content of AZ31 weld metal, Measure average grain size in weld metal, and Measure cross-weld tensile properties and hardness. Conclusions are that: (1) increased Al content in AZ31 weld metal results in grain refinement Reason: higher undercooling during solidification; (2) weld metal grain refinement resulted in increased strength & hardness Reason: grain boundary strengthening; and (3) weld metal strength can be raised to wrought base metal levels.

Babu, N. Kishore [Singapore Institute of Manufacturing Technology; Cross, Carl E. [Los Alamos National Laboratory

2012-06-28T23:59:59.000Z

267

EVALUATION OF THE SACCHAROFLEX 2000 REFLECTANCE MEASURING INSTRUMENT FOR REFINED SUGAR COLOUR ESTIMATION AT HULETTS REFINERY  

E-Print Network [OSTI]

Due to the successful use of the Saccharoflex 2000 reflectance measurement instrument on the estimation of refined sugar colour elsewhere in the world, it was decided by Tongaat-Hulett Sugar to evaluate the instrument at the refinery in Durban. Tests were carried out on first, second, third and fourth refined sugars, the results of which showed a good correlation between the ICUMSA colour measurement and the reflectance reading obtained from the Saccharoflex 2000. The instrument offers a number of advantages, the main one being that a refined sugar colour value can be obtained in less than a minute. The refinery has therefore purchased one for process control.

M Moodley; N K Padayachee; V Govender

268

Generated using version 3.0 of the official AMS LATEX template Voronoi, Delaunay and Block Structured Mesh Refinement for  

E-Print Network [OSTI]

Structured Mesh Refinement for Solution of the Shallow Water Equations on the Sphere HILARY WELLER NCAS meshes of the sphere and adaptive mesh refinement could be immensely beneficial for weather and climate forecasts but it is not clear how mesh refinement should be achieved. A finite-volume model which solves

Weller, Hilary Spencer

269

2009 US-Japan Workshop on Advanced Simulation Methods in Plasma Physics Plasma Particle Simulation with Adaptive Mesh Refinement Technique  

E-Print Network [OSTI]

with Adaptive Mesh Refinement Technique for Multi-scale Phenomena Masanori Nunami1,5 , Hideyuki Usui2,5 , Toseo electromagnetic plasma particle code by using adaptive mesh refinement (AMR) technique. AMR technique, which dynamically according to certain refinement criteria, monitoring all cells where high-resolution is needed

Ito, Atsushi

270

Acta Cryst. (1978). A34, 931-935 Refinement of Large Structures by Simultaneous Minimization of Energy and R Factor  

E-Print Network [OSTI]

Acta Cryst. (1978). A34, 931-935 Refinement of Large Structures by Simultaneous Minimization method of crystallographic structure refinement, especially suitabte for large molecules, is described residual. The method has already proved its worth in the final stages of refinement of two structures

Levitt, Michael

271

Modeling LGN Responses during Free-Viewing: A Possible Role of Microscopic Eye Movements in the Refinement of Cortical  

E-Print Network [OSTI]

in the Refinement of Cortical Orientation Selectivity Michele Rucci,1 Gerald M. Edelman,2 and Jonathan Wray2 1 affect the refinement of orientation tuning in the presence of a Hebbian scheme of synaptic plasticity an important role for the eye movements occurring during fixation in the refinement of orientation selectivity

Rucci, Michele

272

Mechanisms Underlying Developmental Changes in the Firing Patterns of ON and OFF Retinal Ganglion Cells during Refinement  

E-Print Network [OSTI]

Cells during Refinement of their Central Projections Karen L. Myhr,1 Peter D. Lukasiewicz,1,2 and Rachel School of Medicine, St. Louis, Missouri 63110 Patterned neuronal activity is implicated in the refinement patterns of spontaneous activity as their axonal projections undergo refinement. OFF RGCs be- come

Myhr, Karen

273

Lubricant compositions  

SciTech Connect (OSTI)

Lubricant compositions adapted for use under extreme pressure conditions are disclosed. They comprise a major proportion of a lubricating grease, and a minor proportion of an additive consisting essentially of a solid, oil insoluble arylene sulfide polymer, and a metal salt, particularly an alkali metal or alkaline earth metal salt, particularly an alkali metal or alkaline earth metal salt of a phosphorus acid, for example, mono- or dicalcium phosphate, or an alkali metal or alkaline earth metal carbonate exemplified by calcium carbonate, or a mixture of such a phosphate salt and carbonate.

Johnson, A.L.; Lawson, R.D.; Root, J.C.

1981-12-15T23:59:59.000Z

274

Improving transport fuel quality in China: Implications for the refining sector  

SciTech Connect (OSTI)

The study reviews the state of the Chinese refining system and examines the relative costs of 10 scenarios to increase petroleum product quality to Euro III, IV, and V levels.

Yamaguchi, Nancy; Fridley, David; Xiaoming, Ke

2002-08-15T23:59:59.000Z

275

Adaptive mesh refinement for a finite difference scheme using a quadtree decomposition approach  

E-Print Network [OSTI]

Some numerical simulations of multi-scale physical phenomena consume a significant amount of computational resources, since their domains are discretized on high resolution meshes. An enormous wastage of these resources occurs in refinement...

Auviur Srinivasa, Nandagopalan

2009-05-15T23:59:59.000Z

276

Process for solvent refining of coal using a denitrogenated and dephenolated solvent  

DOE Patents [OSTI]

A process is disclosed for the solvent refining of non-anthracitic coal at elevated temperatures and pressure in a hydrogen atmosphere using a hydrocarbon solvent which before being recycled in the solvent refining process is subjected to chemical treatment to extract substantially all nitrogenous and phenolic constituents from the solvent so as to improve the conversion of coal and the production of oil in the solvent refining process. The solvent refining process can be either thermal or catalytic. The extraction of nitrogenous compounds can be performed by acid contact such as hydrogen chloride or fluoride treatment, while phenolic extraction can be performed by caustic contact or contact with a mixture of silica and alumina.

Garg, Diwakar (Macungie, PA); Givens, Edwin N. (Bethlehem, PA); Schweighardt, Frank K. (Allentown, PA)

1984-01-01T23:59:59.000Z

277

Economic impact of the European Union Emission Trading Scheme : evidence from the refining sector  

E-Print Network [OSTI]

I study the economic impact of the European Union Emission Trading Scheme (EU ETS) on the refining industry in Europe. I contrast previous ex-ante studies with the lessons from a series of interviews I conducted with ...

Lacombe, Romain H

2008-01-01T23:59:59.000Z

278

Adjustable Speed Drives in the U.S. Petroleum Refining, Petrochemical, and Chemical Industries  

E-Print Network [OSTI]

This paper describes applications and incentives for the use of variable frequency drivers (VFD) in the petroleum refining, petrochemical, and chemical industries. VFDs are a particular type of adjustable speed driver (ASD) found prevalently...

Foley, D. J.; Chodorowski, A.

279

An Assessment of carbon reduction technology opportunities in the petroleum refining industry.  

SciTech Connect (OSTI)

The refining industry is a major source of CO{sub 2} emissions in the industrial sector and therefore in the future can expect to face increasing pressures to reduce emission levels. The energy used in refining is impacted by market dictates, crude quality, and environmental regulations. While the industry is technologically advanced and relatively efficient opportunities nevertheless exist to reduce energy usage and CO{sub 2} emissions. The opportunities will vary from refinery to refinery and will necessarily have to be economically viable and compatible with each refiner's strategic plans. Recognizing the many factors involved, a target of 15-20% reduction in CO{sub 2} emissions from the refining sector does not appear to be unreasonable, assuming a favorable investment climate.

Petrick, M.

1998-09-14T23:59:59.000Z

280

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

132.9 1,418.3 See footnotes at end of table. 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State Energy Information Administration ...

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Table 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil...  

Gasoline and Diesel Fuel Update (EIA)

839.2 135.0 1,251.9 See footnotes at end of table. 46. Refiner No. 2 Distillate, Diesel Fuel, and Fuel Oil Volumes by PAD District and State Energy Information Administration ...

282

Table A3. Refiner/Reseller Prices of Distillate and Residual...  

Gasoline and Diesel Fuel Update (EIA)

A3. RefinerReseller Prices of Distillate and Residual Fuel Oils, by PAD District, 1983-Present (Cents per Gallon Excluding Taxes) Geographic Area Year No. 1 Distillate No. 2...

283

Using a conformation-dependent stereochemical library improves crystallographic refinement of proteins  

SciTech Connect (OSTI)

The major macromolecular crystallographic refinement packages restrain models to ideal geometry targets defined as single values that are independent of molecular conformation. However, ultrahigh-resolution X-ray models of proteins are not consistent with this concept of ideality and have been used to develop a library of ideal main-chain bond lengths and angles that are parameterized by the {phi}/{psi} angle of the residue [Berkholz et al. (2009), Structure, 17, 1316-1325]. Here, it is first shown that the new conformation-dependent library does not suffer from poor agreement with ultrahigh-resolution structures, whereas current libraries have this problem. Using the TNT refinement package, it is then shown that protein structure refinement using this conformation-dependent library results in models that have much better agreement with library values of bond angles with little change in the R values. These tests support the value of revising refinement software to account for this new paradigm.

Tronrud, Dale E.; Berkholz, Donald S.; Karplus, P. Andrew (Oregon State U.)

2010-07-02T23:59:59.000Z

284

Table 9. U.S. Refiner Conventional Motor Gasoline Volumes by...  

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

5.7 5.9 4.4 12.9 NA 17.3 See footnotes at end of table. 9. U.S. Refiner Conventional Motor Gasoline Volumes by Grade and Sales Type 18 Energy Information Administration ...

285

Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...  

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

98.0 98.0 86.6 75.0 - 80.1 See footnotes at end of table. 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type 20 Energy Information Administration ...

286

Table 13. U.S. Refiner Reformulated Motor Gasoline Volumes by...  

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

3.3 3.4 7.9 3.3 W 11.3 See footnotes at end of table. 13. U.S. Refiner Reformulated Motor Gasoline Volumes by Grade and Sales Type 26 Energy Information Administration ...

287

Table 12. U.S. Refiner Reformulated Motor Gasoline Prices by...  

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

92.4 92.1 83.7 74.1 W 80.9 See footnotes at end of table. 12. U.S. Refiner Reformulated Motor Gasoline Prices by Grade and Sales Type 24 Energy Information Administration ...

288

Table 8. U.S. Refiner Conventional Motor Gasoline Prices by...  

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

87.4 86.9 78.3 68.5 W 70.8 See footnotes at end of table. 8. U.S. Refiner Conventional Motor Gasoline Prices by Grade and Sales Type 16 Energy Information Administration ...

289

Table 12. U.S. Refiner Reformulated Motor Gasoline Prices by...  

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

92.8 92.5 84.0 72.5 W 80.7 See footnotes at end of table. 12. U.S. Refiner Reformulated Motor Gasoline Prices by Grade and Sales Type 24 Energy Information Administration ...

290

Table 8. U.S. Refiner Conventional Motor Gasoline Prices by...  

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

88.4 87.8 80.1 70.0 NA 72.6 See footnotes at end of table. 8. U.S. Refiner Conventional Motor Gasoline Prices by Grade and Sales Type 16 Energy Information Administration ...

291

Table 10. U.S. Refiner Oxygenated Motor Gasoline Prices by...  

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

94.0 93.9 83.2 73.8 - 79.3 See footnotes at end of table. 10. U.S. Refiner Oxygenated Motor Gasoline Prices by Grade and Sales Type 20 Energy Information Administration ...

292

Table 13. U.S. Refiner Reformulated Motor Gasoline Volumes by...  

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

3.6 3.7 7.9 3.1 W 11.0 See footnotes at end of table. 13. U.S. Refiner Reformulated Motor Gasoline Volumes by Grade and Sales Type 26 Energy Information Administration ...

293

Table 9. U.S. Refiner Conventional Motor Gasoline Volumes by...  

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

5.7 5.9 3.9 12.7 W 16.6 See footnotes at end of table. 9. U.S. Refiner Conventional Motor Gasoline Volumes by Grade and Sales Type 18 Energy Information Administration ...

294

Fact #676: May 23, 2011 U.S. Refiners Produce about 19 Gallons...  

Energy Savers [EERE]

U.S. barrel contains 42 gallons of crude oil which yields about 44 gallons of petroleum products. The additional 2 gallons of petroleum products come from refiner gains...

295

Table A2. Refiner/Reseller Prices of Aviation Fuels, Propane...  

Gasoline and Diesel Fuel Update (EIA)

- W 73.5 See footnotes at end of table. A2. RefinerReseller Prices of Aviation Fuels, Propane, and Kerosene, by PAD District, 1983-Present Energy Information Administration ...

296

Parcel Per Parcel Toward A More Refined Carbon Emissions Estimation For Livermore, CA  

E-Print Network [OSTI]

A More Refined Carbon Emissions Estimation For Livermore, CAof lifestyle on carbon emissions in the residential sector [an all-time low in carbon emissions, though most use overall

Živanovi?, Ana

2014-01-01T23:59:59.000Z

297

A comparison of the performance of waterfloods using similar refined and crude oils  

E-Print Network [OSTI]

A COMPARISON OF THE PERFORMANCE OF WATERFI, GODS USING SIMILAR REFINED AND CRUDE OILS A Thesis By DAYLON L. WALTON Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August, 1960 Major Subject: PETROLEUM ENGINEERING A COMPARISON OF THE PERFORMANCE OF WATERFLOODS USING SIMILAR REFINED AND CRUDE OILS A Thesis By DAYLON L. WALTON Approved as to style and content by: (Chairman f...

Walton, Daylon Lynn

1960-01-01T23:59:59.000Z

298

Refine your search Select options from the menu on the left hand  

E-Print Network [OSTI]

://psu.summon.serialssolutions.comhttp://psu.summon.serialssolutions.com F I N A L LY : RESEARCH AS EASYAS 1-2-3 #12;1 Enter search term into search box. 2 Refine results relevant articles were published in that year. Include or Exclude subject terms from your searchRefine your search Select options from the menu on the left hand side of the results screen

Yener, Aylin

299

Thickness-based adaptive mesh refinement methods for multi-phase flow simulations with thin regions  

SciTech Connect (OSTI)

In numerical simulations of multi-scale, multi-phase flows, grid refinement is required to resolve regions with small scales. A notable example is liquid-jet atomization and subsequent droplet dynamics. It is essential to characterize the detailed flow physics with variable length scales with high fidelity, in order to elucidate the underlying mechanisms. In this paper, two thickness-based mesh refinement schemes are developed based on distance- and topology-oriented criteria for thin regions with confining wall/plane of symmetry and in any situation, respectively. Both techniques are implemented in a general framework with a volume-of-fluid formulation and an adaptive-mesh-refinement capability. The distance-oriented technique compares against a critical value, the ratio of an interfacial cell size to the distance between the mass center of the cell and a reference plane. The topology-oriented technique is developed from digital topology theories to handle more general conditions. The requirement for interfacial mesh refinement can be detected swiftly, without the need of thickness information, equation solving, variable averaging or mesh repairing. The mesh refinement level increases smoothly on demand in thin regions. The schemes have been verified and validated against several benchmark cases to demonstrate their effectiveness and robustness. These include the dynamics of colliding droplets, droplet motions in a microchannel, and atomization of liquid impinging jets. Overall, the thickness-based refinement technique provides highly adaptive meshes for problems with thin regions in an efficient and fully automatic manner.

Chen, Xiaodong [The State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 (China); Yang, Vigor, E-mail: vigor.yang@aerospace.gatech.edu [School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0150 (United States)

2014-07-15T23:59:59.000Z

300

Fast and Effective Query Refinement Bienvenido V'elez 1 , Ron Weiss 1 , Mark A. Sheldon 2 , David K. Gifford 1  

E-Print Network [OSTI]

Fast and Effective Query Refinement Bienvenido V'elez 1 , Ron Weiss 1 , Mark A. Sheldon 2 , David K Corporation Abstract Query Refinement is an essential information retrieval tool that interactively recommends­ cal query refinement algorithm that refines multiple term queries by dynamically combining precomputed

Gifford, David K.

Note: This page contains sample records for the topic "1949-2012 composite refiner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


301

The third, use of quantum mechanics to evaluate the molecular energy and forces, holds promise for future refinements when applied wholesale,  

E-Print Network [OSTI]

for future refinements when applied wholesale, but is already capable of producing valuable insight when

Sali, Andrej

302

Need for refining capacity creates opportunities for producers in Middle East  

SciTech Connect (OSTI)

Oil industry interest in refining has revived in the past few years in response to rising oil consumption. The trend creates opportunities, for countries in the Middle East, which do not own refining assets nearly in proportion to their crude oil reserved. By closing this gap between reserves and refining capacity, the countries can ease some of the instability now characteristic of the oil market. Some major oil producing countries have begun to move downstream. During the 1980s, Venezuela, Kuwait, Saudi Arabia, Libya, and other members of the Organization of Petroleum Exporting Countries acquired refining assets through direct total purchase or joint ventures. Nevertheless, the oil industry remains largely unintegrated, with the Middle East holding two thirds of worldwide oil reserves but only a small share downstream. As worldwide refining capacity swings from a period of surplus toward one in which the need for new capacity will be built. The paper discusses background of the situation, shrinking surplus, investment requirements, sources of capital, and shipping concerns.

Ali, M.S.S. (Bahrain National Oil Co., Awali (Bahrain))

1994-07-11T23:59:59.000Z

303

Empirical examination of allegations of ''below-cost'' retail selling of gasoline by refiners: Research study No. 038  

SciTech Connect (OSTI)

It is alleged by some dealers that (major) refiners consistently sell their gasoline through directly operated stations at retail prices below the prices charged to resellers. The results of this examination, involving more than 2000 price comparisons, failed to reveal a single instance where the average monthly retail price at refiner operated stations was below the price charged resellers by refiners. This result obtained not only for all gasoline sales by major refiners, but also for specific grades of gasoline sold by all refiners. Moreover, a large majority of the average monthly price differentials were greater than 6 cents per gallon, and exceeded 10 cents per gallon in a significant number of instances. Thus, the data do not support the allegation of widespread ''below-cost'' selling by refiners through outlets which they own and operate. Therefore, the rationale offered for legislation mandating retail divorcement, or prohibiting ''below-cost'' is not supported by the evidence. 3 figs., 5 tabs.

Hogarty, T.F.; Lindstrom, P.M.

1986-10-01T23:59:59.000Z

304

Composite of refractory material  

DOE Patents [OSTI]

A composite refractory material composition comprises a boron carbide matrix and minor constituents of yttrium-boron-oxygen-carbon phases uniformly distributed throughout the boron carbide matrix.

Holcombe, C.E.; Morrow, M.S.

1994-07-19T23:59:59.000Z

305

Composite of refractory material  

DOE Patents [OSTI]

A composite refractory material composition comprises a boron carbide matrix and minor constituents of yttrium-boron-oxygen-carbon phases uniformly distributed throughout the boron carbide matrix.

Holcombe, Cressie E. (Knoxville, TN); Morrow, Marvin S. (Kingston, TN)

1994-01-01T23:59:59.000Z

306

Refined Topological Vertex, Cylindric Partitions and the U(1) Adjoint Theory  

E-Print Network [OSTI]

We study the partition function of the compactified 5D U(1) gauge theory (in the Omega-background) with a single adjoint hypermultiplet, calculated using the refined topological vertex. We show that this partition function is an example a periodic Schur process and is a refinement of the generating function of cylindric plane partitions. The size of the cylinder is given by the mass of adjoint hypermultiplet and the parameters of the Omega-background. We also show that this partition function can be written as a trace of operators which are generalizations of vertex operators studied by Carlsson and Okounkov. In the last part of the paper we describe a way to obtain (q,t) identities using the refined topological vertex.

Amer Iqbal; Can Kozcaz; Khurram Shabbir

2009-12-02T23:59:59.000Z

307

Refined Glauber model versus Faddeev calculations and experimental data for pd spin observables  

SciTech Connect (OSTI)

Spin-dependent observables in intermediate-energy pd elastic scattering within the framework of the refined Glauber model are considered. The improvements include an account of all ten pp and pn helicity amplitudes at respective energies constructed on the basis of modern phase-shift analysis, accurate deuteron wave functions taken from the modern NN force model and account of charge-exchange effects. Predictions of the refined diffraction model for differential cross section and analyzing powers are compared with exact three-body Faddeev calculations and the recent experimental data. An amazingly good agreement between the results of both theoretical approaches as well as between the refined Glauber model and experiment in a wide angular range not only for differential cross section but also for vector and tensor analyzing powers has been found for the first time. Possible reasons for this agreement are discussed.

Platonova, M. N.; Kukulin, V. I. [D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow RU-119991 (Russian Federation)

2010-01-15T23:59:59.000Z

308

Liquid-liquid extraction as the means of refining cottonseed oil  

E-Print Network [OSTI]

LIBRARY A 4 AI CvLLEGE OF TEXAS LIOVID-LIQUID EXTRACTION AS THE MEANS OI REFINING CCTTONSEFZ OIL A Thesis By 1'RVUBHAI CHIINIBHAI PATEL a 0 U z A R 0 Submitted to the Graduate School of the Agricultural and Mechanical College of Texas... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Auuust 1996 Major Subject Chemical ineeri LIQUID-LIQUID EXTRACTION AS THE MEANS OF REFINING COTTONSEED OIL A Thesis By MANUBHAI CHUNIBHAI PATEL Approved as to style...

Patel, Manubhai Chunibhai

1956-01-01T23:59:59.000Z

309

Circuit QED: Implementation of the three-qubit refined Deutsch-Jozsa quantum algorithm  

E-Print Network [OSTI]

We propose a protocol to construct the 35 $f$-controlled phase gates of a three-qubit refined Deutsch-Jozsa (DJ) algorithm, by using single-qubit $\\sigma_z$ gates, two-qubit controlled phase gates, and two-target-qubit controlled phase gates. Using this protocol, we discuss how to implement the three-qubit refined DJ algorithm with superconducting transmon qutrits resonantly coupled to a single cavity. Our numerical calculation shows that implementation of this quantum algorithm is feasible within the present circuit QED technique. The experimental realization of this algorithm would be an important step toward more complex quantum computation in circuit QED.

Qi-Ping Su; Chui-Ping Yang

2014-10-12T23:59:59.000Z

310

Comparison of the refined analytic and the Burghelea-Haller torsions  

E-Print Network [OSTI]

The refined analytic torsion associated to a flat vector bundle over a closed odd-dimensional manifold canonically defines a quadratic form $\\tau$ on the determinant line of the cohomology. Both $\\tau$ and the Burghelea-Haller torsion are refinements of the Ray-Singer torsion. We show that whenever the Burghelea-Haller torsion is defined it is equal to $\\pm\\tau$. As an application we obtain new results about the Burghelea-Haller torsion. In particular, we prove a weak version of the Burghelea-Haller conjecture relating their torsion with the square of the Farber-Turaev combinatorial torsion.

Maxim Braverman; Thomas Kappeler

2007-06-28T23:59:59.000Z

311

Design refinements and support systems for Texas A&M Automatic Marine Corer  

E-Print Network [OSTI]

DESIGN REFINEMENTS AND SUPPORT SYSTEMS FOR THE TEXAS AQf AUTOMATIC MARINE CORER A Thesis by HERMAN GLEN HENDERSON, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OP SCIENCE May 1971 Major Sub]ect: Mechanical Engineering DESIGN REFINEMENTS AND SUPPORT SYSTEMS FOR THE TEXAS AAM AUTOMATIC MARINE CORER R m 8 CC m a m A Thesis by HERMAN OLEN HENDERSON, JR. Approved as to style and content by...

Henderson, Herman Olen

1971-01-01T23:59:59.000Z

312

Cavity QED implementation of the multi-qubit refined Deutsch-Jozsa algorithm  

E-Print Network [OSTI]

We theoretically study the realization of a multi-qubit refined Deutsch-Jozsa (DJ) algorithm using resonant interaction of many Rydberg atoms with a single-mode microwave cavity, in which the multi-qubit controlled phase gates could be accomplished efficiently. We show how to achieve a multi-qubit refined DJ algorithm in high fidelity, even in the case of a weak cavity decay and some imperfection. We argue that the required operations in our scheme are almost within the present experimental possibilities.

Wan Li Yang; Chang Yong Chen; Zhen Yu Xu; Mang Feng

2010-02-25T23:59:59.000Z

313

Studies on design of a process for organo-refining of coal to obtain super clean coal  

SciTech Connect (OSTI)

Organo-refining of coal results in refining the coal to obtain super clean coal and residual coal. Super clean coal may be used to obtain value added chemicals, products, and cleaner fuels from coal. In the present work, studies on the design of a semicontinuous process for organo-refining of one ton of coal have been made. The results are reported. This is only a cursory attempt for the design, and further studies may be required for designing this process for use in the development of a scaled-up process of organo-refining of coal.

Sharma, C.S.; Sharma, D.K. [Indian Inst. of Tech., New Delhi (India). Centre for Energy Studies

1999-08-01T23:59:59.000Z

314

Refined Error Estimates for the Riccati Equation with Applications to the Angular Teukolsky Equation  

E-Print Network [OSTI]

We derive refined rigorous error estimates for approximate solutions of Sturm-Liouville and Riccati equations with real or complex potentials. The approximate solutions include WKB approximations, Airy and parabolic cylinder functions, and certain Bessel functions. Our estimates are applied to solutions of the angular Teukolsky equation with a complex aspherical parameter in a rotating black hole Kerr geometry.

Felix Finster; Joel Smoller

2015-02-17T23:59:59.000Z

315

NWS Product Definition Document (PDD) for: Refinement of SPC Experimental Enhanced Resolution Thunderstorm Outlook  

E-Print Network [OSTI]

NWS Product Definition Document (PDD) for: Refinement of SPC Experimental Enhanced Resolution replaces an existing PDD, whose evaluation period expired on 15 February 2008, and revises the current SPC will also evaluate changes in the distribution of SPC forecaster workload and the ability to maintain

316

Refinement of weed risk assessments for biofuels using Camelina sativa as a model species  

E-Print Network [OSTI]

Refinement of weed risk assessments for biofuels using Camelina sativa as a model species Philip B and Environmental Sciences, Montana State University, PO Box 173120, Bozeman, MT 59717-3120, USA Summary 1. Biofuel. However, concerns have been raised on the invasiveness of biofuel feedstocks. Estimating invasion

Peterson, Robert K. D.

317

Error estimation and anisotropic mesh refinement for 3d laminar aerodynamic flow simulations  

E-Print Network [OSTI]

Error estimation and anisotropic mesh refinement for 3d laminar aerodynamic flow simulations Tobias Leichta,b , Ralf Hartmann,a,b aInstitute of Aerodynamics and Flow Technology, DLR (German Aerospace Center-dimensional laminar aerodynamic flow simulations. The optimal order symmetric interior penalty discontinuous Galerkin

Hartmann, Ralf

318

proteinsSTRUCTURE O FUNCTION O BIOINFORMATICS Refinement of protein termini in  

E-Print Network [OSTI]

by template- based methods is particularly important.1 For example, in recent CASP (Critical Assessments of techniques for protein Structure Prediction) experiments refinement methods have been evaluated both by consider- ing the extent of model quality improvement over the best available templates for template

Lee, Jooyoung

319

Grain refinement and texture development of cast bi90sb10 alloy via severe plastic deformation  

E-Print Network [OSTI]

The purpose of this work was to study learn about grain refinement mechanisms and texture development in cast n-type Bi90Sb10 alloy caused by severe plastic deformation. The practical objective is to produce a fine grained and textured...

Im, Jae-taek

2009-05-15T23:59:59.000Z

320

Proceedings of the conference on electron beam melting and refining - state of the art 1996  

SciTech Connect (OSTI)

This conference proceedings summarizes state-of-the-art work in the field of electron-beam melting and refining, as presented at the 1996 conference. Papers are grouped as follows: invited papers; tutorial papers; electron beam melting related fundamentals; electron beam evaporation papers; and miscellaneous papers. Separate abstracts have been submitted to the energy database for some contributions to this proceedings.

Bakish, R. [ed.

1996-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

REFINING AND MAINTAINING THE OPTIMAL PERFORMANCE OF THE CEBAF SRF SYSTEMS *  

E-Print Network [OSTI]

REFINING AND MAINTAINING THE OPTIMAL PERFORMANCE OF THE CEBAF SRF SYSTEMS * C. Reece, J. Benesch CEBAF at Jefferson Lab is striving to achieve its maximum reliability at the maximum deliverable energy beam time when CEBAF is run near its maximum energy. Operation at increased rf power levels has

322

Environmental Regulations and Changes in Petroleum Refining Operations (Released in the STEO June 1998)  

Reports and Publications (EIA)

Changes in domestic refining operations are identified and related to the summer Reid vapor pressure (RVP) restrictions and oxygenate blending requirements. This analysis uses published Energy Information Administration survey data and linear regression equations from the Short-Term Integrated Forecasting System (STIFS). The STIFS model is used for producing forecasts appearing in the Short-Term Energy Outlook.

1998-01-01T23:59:59.000Z

323

Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

35.2 213.6 9.5 9.8 12.9 16.6 NA 29.5 See footnotes at end of table. 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type 14 Energy Information Administration ...

324

Table A1. Refiner/Reseller Motor Gasoline Prices by Grade, PAD...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

71.6 92.3 78.2 101.8 83.6 87.5 74.7 See footnotes at end of table. A1. RefinerReseller Motor Gasoline Prices by Grade, PAD District, and State, 1984-Present 452 Energy Information...

325

Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...  

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

62.2 68.5 90.1 89.6 82.4 70.9 NA 75.9 See footnotes at end of table. 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type 12 Energy Information Administration ...

326

Table 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by...  

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

- 4.9 0.4 0.4 0.3 0.4 - 0.7 See footnotes at end of table. 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by Grade and Sales Type 22 Energy Information Administration ...

327

Table 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales...  

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

61.5 67.3 89.8 89.5 82.2 69.4 71.1 74.9 See footnotes at end of table. 6. U.S. Refiner Motor Gasoline Prices by Grade and Sales Type 12 Energy Information Administration ...

328

Table 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

33.9 215.8 9.7 10.0 12.1 16.3 0.0 28.4 See footnotes at end of table. 7. U.S. Refiner Motor Gasoline Volumes by Grade and Sales Type 14 Energy Information Administration ...

329

Table 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by...  

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

W 5.6 0.5 0.5 0.5 0.4 - 0.9 See footnotes at end of table. 11. U.S. Refiner Oxygenated Motor Gasoline Volumes by Grade and Sales Type 22 Energy Information Administration ...

330

Rocky Mountain area petroleum product availability with reduced PADD IV refining capacity  

SciTech Connect (OSTI)

Studies of Rocky Mountain area petroleum product availability with reduced refining capacity in Petroleum Administration for Defense IV (PADD IV, part of the Rocky Mountain area) have been performed with the Oak Ridge National Laboratory Refinery Yield Model, a linear program which has been updated to blend gasolines to satisfy constraints on emissions of nitrogen oxides and winter toxic air pollutants. The studies do not predict refinery closures in PADD IV. Rather, the reduced refining capacities provide an analytical framework for probing the flexibility of petroleum refining and distribution for winter demand conditions in the year 2000. Industry analysts have estimated that, for worst case scenarios, 20 to 35 percent of PADD IV refining capacity could be shut-down as a result of clean air and energy tax legislation. Given these industry projections, the study scenarios provide the following conclusions: The Rocky Mountain area petroleum system would have the capability to satisfy winter product demand with PADD IV refinery capacity shut-downs in the middle of the range of industry projections, but not in the high end of the range of projections. PADD IV crude oil production can be maintained by re-routing crude released from PADD IV refinery demands to satisfy increased crude oil demands in PADDs II (Midwest), III (Gulf Coast), and Washington. Clean Air Act product quality regulations generally do not increase the difficulty of satisfying emissions reduction constraints in the scenarios.

Hadder, G.R.; Chin, S.M.

1994-02-01T23:59:59.000Z

331

Adaptive Mesh Refinement and Multilevel Iteration for Flow in Porous Media  

E-Print Network [OSTI]

, including support from Mobil Exploration and Production Technical Center, Dallas. 2 Supported by NSF grant; Abstract An adaptive local mesh refinement algorithm originally developed for unsteady gas dynamics are provided. #12; 1 Introduction. The numerical treatment of field­scale simulation of enhanced oil recovery

Trangenstein, John A.

332

Refined Asymptotics for the subcritical Keller-Segel system and Related Functional Inequalities  

E-Print Network [OSTI]

Refined Asymptotics for the subcritical Keller-Segel system and Related Functional Inequalities self-similarity for the subcritical Keller- Segel system in the radially symmetric two-dimensional case that the one-dimensional equation is a contraction with respect to Fourier distance in the subcritical case. 1

Paris-Sud XI, Université de

333

Estimation and projection of the demand for refined petroleum products in Iran  

SciTech Connect (OSTI)

The main purpose of this study is to construct an econometric model for estimation and projection of oil-refined products in Iran based on the situation of the Iranian energy market. Part 1 reviews the existing literature and contains the salient socio-economic futures of OPEC countries in general and of Iran in particular. Explanation of the structure of Iran's domestic energy market (demand, supply, and price) is the main purpose of this part. In Part 2, the demand function for each refined petroleum product is analyzed, formulated, and estimated. The price and income elasticities of the demands for gasoline, kerosene, gas oil and fuel oil are analyzed and compared with those of other countries. In Part 3, after analyzing and estimating the demand functions for total refined products, first, the full model, including all the estimated demand functions is dynamically simulated over the sample periods (1955-1978) in order to evaluate the performance power of the model, then the amount of consumption of each refined product for the next decade (1979-1988), under three scenarios of the rate of growth of real GNP, 9%, 7% and 5% is projected.

Kianian, S.A.; Amin, M.

1983-01-01T23:59:59.000Z

334

A Characteristic Domain Decomposition and SpaceTime Local Refinement Method for  

E-Print Network [OSTI]

partial differential equations model the reactive transport of solutes in groundwater and surface water with other domain decomposition and local refinement schemes. 1 Introduction First­order linear hyperbolic interfaces that introduce extra difficulties. Physical interfaces arise, for example, in the modeling

Sharpley, Robert

335

A Characteristic Domain Decomposition and SpaceTime Local Refinement Method for  

E-Print Network [OSTI]

model the reactive transport of solutes in groundwater and surface water, the movement of aerosols and local refinement schemes. 1 Introduction First­order linear hyperbolic partial differential equations that introduce extra difficulties. Physical interfaces arise, for example, in the modeling of transport processes

South Carolina, University of

336

A Characteristic Domain Decomposition and Space Time Local Refinement Method for  

E-Print Network [OSTI]

cause severe numerical difficulties [1­5]. Conventional finite difference or finite element methods­Lagrangian methods; linear hyperbolic problems; local refinement techniques I. INTRODUCTION First-order linear hyperbolic partial differential equations model the reactive transport of solutes in groundwater and surface

Sharpley, Robert

337

Refinement and validation of a multi-level assessment method for Mid-Atlantic tidal wetlands  

E-Print Network [OSTI]

Refinement and validation of a multi-level assessment method for Mid-Atlantic tidal wetlands (EPA of wetland resources across the Mid-Atlantic physiographic region, efforts are currently underway in a number of states, most notably Delaware, Maryland, Pennsylvania and Virginia, to develop and implement wetland

338

The Use of Re-Refined Oil in Vehicle Fleets Copyright 1996 Society of Automotive Engineers, Inc.  

E-Print Network [OSTI]

A literature search to identify deleterious effects of using re-refined oil did not disclose any validated occurrences. Significant engine testing using re-refined lubricating oil is reported and no cases were discovered in which engine operation was affected negatively by the use of re-refined oil. The American Petroleum Institute (AFT) allows the use of re-refined base stock oils in the blending of end use lubricants. Based on oil sample testing performed in this research as well as other authoritative sources, it was determined that no significant chemical or physical differences exist between rerefined and virgin oils. Differences noted in this research were related to higher levels of polynuclear aromatics (PNA’s) in the re-refined oil. PNA’s

Timothy T. Maxwell; Glen Hagler; Jesse C. Jones; Raghu Narayan; Atila Ertas

339

Heteroporphyrin nanotubes and composites  

DOE Patents [OSTI]

Heteroporphyrin nanotubes, metal nanostructures, and metal/porphyrin-nanotube composite nanostructures formed using the nanotubes as photocatalysts and structural templates, and the methods for forming the nanotubes and composites.

Shelnutt, John A. (Tijeras, NM); Medforth, Craig J. (Winters, CA); Wang, Zhongchun (Albuquerque, NM)

2007-05-29T23:59:59.000Z

340

Composite production riser assessment  

E-Print Network [OSTI]

The performance of a deep water composite production riser from a system perspective is presented, and its advantages are articulated through comparisons with a typical steel riser under identical service conditions. The composite riser joints...

Kim, Won Ki

2007-09-17T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Heteroporphyrin nanotubes and composites  

DOE Patents [OSTI]

Heteroporphyrin nanotubes, metal nanostructures, and metal/porphyrin-nanotube composite nanostructures formed using the nanotubes as photocatalysts and structural templates, and the methods for forming the nanotubes and composites.

Shelnutt, John A.; Medforth, Craig J.; Wang, Zhongchun

2006-11-07T23:59:59.000Z

342

Composite fuel cell membranes  

SciTech Connect (OSTI)

A bilayer or trilayer composite ion exchange membrane suitable for use in a fuel cell. The composite membrane has a high equivalent weight thick layer in order to provide sufficient strength and low equivalent weight surface layers for improved electrical performance in a fuel cell. In use, the composite membrane is provided with electrode surface layers. The composite membrane can be composed of a sulfonic fluoropolymer in both core and surface layers.

Plowman, Keith R. (Lake Jackson, TX); Rehg, Timothy J. (Lake Jackson, TX); Davis, Larry W. (West Columbia, TX); Carl, William P. (Marble Falls, TX); Cisar, Alan J. (Cypress, TX); Eastland, Charles S. (West Columbia, TX)

1997-01-01T23:59:59.000Z

343

Nano-composite materials  

DOE Patents [OSTI]

Nano-composite materials are disclosed. An exemplary method of producing a nano-composite material may comprise co-sputtering a transition metal and a refractory metal in a reactive atmosphere. The method may also comprise co-depositing a transition metal and a refractory metal composite structure on a substrate. The method may further comprise thermally annealing the deposited transition metal and refractory metal composite structure in a reactive atmosphere.

Lee, Se-Hee; Tracy, C. Edwin; Pitts, J. Roland

2010-05-25T23:59:59.000Z

344

Composite fuel cell membranes  

DOE Patents [OSTI]

A bilayer or trilayer composite ion exchange membrane is described suitable for use in a fuel cell. The composite membrane has a high equivalent weight thick layer in order to provide sufficient strength and low equivalent weight surface layers for improved electrical performance in a fuel cell. In use, the composite membrane is provided with electrode surface layers. The composite membrane can be composed of a sulfonic fluoropolymer in both core and surface layers.

Plowman, K.R.; Rehg, T.J.; Davis, L.W.; Carl, W.P.; Cisar, A.J.; Eastland, C.S.

1997-08-05T23:59:59.000Z

345

Two-boson composites  

E-Print Network [OSTI]

Composite bosons made of two bosonic constituents exhibit deviations from ideal bosonic behavior due to their substructure. This deviation is reflected by the normalization ratio of the quantum state of N composites. We find a set of saturable, efficiently evaluable bounds for this indicator, which quantifies the bosonic behavior of composites via the entanglement of their constituents. We predict an abrupt transition between ordinary and exaggerated bosonic behavior in a condensate of two-boson composites.

Malte C. Tichy; Peter Alexander Bouvrie; Klaus Mřlmer

2013-12-16T23:59:59.000Z

346

Vibrational Damping of Composite Materials  

E-Print Network [OSTI]

on the Damping of Composite Laminates”, SPIE Proceedings onpublication to Journal of Composite Materials Biggerstaff,submitted for publication to Composites, Part A Biggerstaff,

Biggerstaff, Janet M.

2006-01-01T23:59:59.000Z

347

Solid polymer electrolyte compositions  

DOE Patents [OSTI]

An electrolyte composition is featured that includes a solid, ionically conductive polymer, organically modified oxide particles that include organic groups covalently bonded to the oxide particles, and an alkali metal salt. The electrolyte composition is free of lithiated zeolite. The invention also features cells that incorporate the electrolyte composition.

Garbe, James E. (Stillwater, MN); Atanasoski, Radoslav (Edina, MN); Hamrock, Steven J. (St. Paul, MN); Le, Dinh Ba (St. Paul, MN)

2001-01-01T23:59:59.000Z

348

Phase change compositions  

DOE Patents [OSTI]

Compositions containing crystalline, straight chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons.

Salyer, Ival O. (Dayton, OH)

1989-01-01T23:59:59.000Z

349

Phase change compositions  

SciTech Connect (OSTI)

Compositions containing crystalline, long chain, alkyl hydrocarbons as phase change materials including cementitious compositions containing the alkyl hydrocarbons neat or in pellets or granules formed by incorporating the alkyl hydrocarbons in polymers or rubbers; and polymeric or elastomeric compositions containing alkyl hydrocarbons.

Salyer, Ival O. (Dayton, OH); Griffen, Charles W. (Mason, OH)

1986-01-01T23:59:59.000Z

350

Decontamination of metals by melt refining/slagging. An annotated bibliography: Update on stainless steel and steel  

SciTech Connect (OSTI)

The following presentation is an update to a previous annotation, i.e., WINCO-1138. The literature search and annotated review covers all metals used in the nuclear industries but the emphasis of this update is directed toward work performed on mild steels. As the number of nuclear installations undergoing decontamination and decommissioning (D&D) increases, current radioactive waste storage space is consumed and establishment of new waste storage areas becomes increasingly difficult, the problem of handling and storing radioactive scrap metal (RSM) gains increasing importance in the DOE Environmental Restoration and Waste Management Program. To alleviate present and future waste problems, Lockheed Idaho Technologies Co (LITCO) is managing a program for the recycling of RSM for beneficial use within the DOE complex. As part of that effort, Montana Tech has been awarded a contract to help optimize melting and refining technology for the recycling of stainless steel RSM. The scope of the Montana Tech program includes a literature survey, a decontaminating slag design study, small wide melting studies to determine optimum slag compositions for removal of radioactive contaminant surrogates, analysis of preferred melting techniques, and coordination of large scale melting demonstrations (100--2,000 lbs) to be conducted at selected facilities. The program will support recycling and decontaminating stainless steel RSM for use in waste canisters for Idaho Waste Immobilization Facility densified high level waste and Pit 9/RWMC boxes. This report is the result of the literature search conducted to establish a basis for experimental melt/slag program development. The program plan will be jointly developed by Montana Tech and LITCO.

Worchester, S.A.; Twidwell, L.G.; Paolini, D.J.; Weldon, T.A. [Montana Tech of the Univ., of Montana (United States); Mizia, R.E. [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)

1995-01-01T23:59:59.000Z

351

A refined threshold theorem for (1+2)-dimensional wave maps into surfaces  

E-Print Network [OSTI]

The recently established threshold theorem for energy critical wave maps states that wave maps with energy less than that of the ground state (i.e., a minimal energy nontrivial harmonic map) are globally regular and scatter on (1+2)-dimensional Minkowski space. In this note we give a refinement of this theorem when the target is a closed orientable surface by taking into account an additional invariant of the problem, namely the topological degree. We show that the sharp energy threshold for global regularity and scattering is in fact twice the energy of the ground state for wave maps with degree zero, whereas wave maps with nonzero degree necessarily have at least the energy of the ground state. We also give a discussion on the formulation of a refined threshold conjecture for the energy critical $SU(2)$ Yang-Mills equation on (1+4)-dimensional Minkowski space.

Andrew Lawrie; Sung-Jin Oh

2015-02-11T23:59:59.000Z

352

A one-parameter refinement of the Razumov-Stroganov correspondence  

E-Print Network [OSTI]

We introduce and prove a one-parameter refinement of the Razumov-Stroganov correspondence. This is achieved for fully-packed loop configurations (FPL) on domains which generalize the square domain, and which are endowed with the gyration operation. We consider one given side of the domain, and FPLs such that the only straight-line tile on this side is black. We show that the enumeration vector associated to such FPLs, weighted according to the position of the straight line and refined according to the link pattern for the black boundary points, is the ground state of the scattering matrix, an integrable one-parameter deformation of the O(1) Dense Loop Model Hamiltonian. We show how the original Razumov-Stroganov correspondence, and a conjecture formulated by Di Francesco in 2004, follow from our results.

Luigi Cantini; Andrea Sportiello

2012-02-23T23:59:59.000Z

353

Refined Topological Vertex and Duality of Gauge Theories in Generic Omega Backgrounds  

E-Print Network [OSTI]

The partition functions of refined topological strings(A-models) are computed, which give rise to the circle-compactified five-dimensional supersymmetric linear quiver gauge theories in generic (not necessarily self-dual) Omega backgrounds. Based on the slicing independence conjecture of refined topological string partition functions, it is demonstrated explicitly that the duality exists between $SU(N)^{M-1}$ and $SU(M)^{N-1}$ supersymmetric linear quiver gauge theories, even in generic Omega backgrounds. It is found that the relations between string moduli and gauge moduli are deformed from the self-dual case. However if the duality map which preserves the ratio of the Omega background parameters q and t, is considered, duality maps of the gauge moduli are not changed from the self-dual case.

Kei Ito

2012-11-29T23:59:59.000Z

354

Refined Partition Functions for Open Superstrings with 4, 8 and 16 Supercharges  

E-Print Network [OSTI]

We analyse the perturbative massive open string spectrum of even dimensional superstring compactifications with four, eight and sixteen supercharges. In each of such cases, we focus on universal states that exist independently on the internal geometry and other compatification details. We analytically compute refined partition functions that count these states at each mass level. Such refined partition functions are written in a super-Poincare covariant form, providing information on how supermultiplets transform under the little group and the R symmetry. Various asymptotic limits of the partition functions and their associated quantities, such as the leading and subleading Regge trajectories, are studied empirically and analytically. In the phenomenologically relevant case of four supercharges, the partition function can be cast into the most compact form and the asymptotic formula in the large spin limit is derived explicitly.

Dieter Lust; Noppadol Mekareeya; Oliver Schlotterer; Andrew Thomson

2012-11-05T23:59:59.000Z

355

Analysis of cadmium in undissolved anode materials of Mark-IV electro-refiner  

SciTech Connect (OSTI)

The Mark-IV electro-refiner (Mk-IV ER) is a unit process in the FCF (Fuel Conditioning Facility), which is primarily assigned to treating the used driver fuels. Mk-IV ER contains an electrolyte/molten cadmium system for refining uranium electrochemically. Typically, the anode of the Mk-IV ER consists of the chopped sodium-bonded metallic driver fuels, which have been primarily U-10Zr binary fuels. Chemical analysis of the residual anode materials after electrorefining indicates that a small amount of cadmium is removed from the Mk-IV ER along with the undissolved anode materials. Investigation of chemical analysis data indicates that the amount of cadmium in the undissolved anode materials is strongly correlated with the anode rotation speeds and the residence time of the anode in the Mk-IV ER. Discussions are given to explain the prescribed correlation. (authors)

Yoo, Tae-Sic; Fredrickson, G.L.; Vaden, D.; Westphal, B. [Separation Department, Materials and Fuels Complex, Idaho National Laboratory, Idaho Falls, ID (United States)

2013-07-01T23:59:59.000Z

356

Re-refining of Waste Oil Solvent Is Used in Treatment/Distillation Process  

E-Print Network [OSTI]

INDUSTRIAL APPLICATION. A combination solvent treatment/distillation process has been designed for re-refining industrial waste oil (such as equipment lubricants, metal-working oil, and process oil) and used automotive lubricants (engine oil, hydraulic oil, and gear oil) for reuse. WASTE ENERGY RECOVERY. Recycling of waste oil in the United States has the potential to save the energy equivalent of 7-12 million bbl of crude oil annually.1 WASTE OIL RECOVERY. Prior to 1960, a significant portion of the demand for automotive lubricating oil was met by re-relined used oil. At the time, 150 re-refineries produced 300 million gal of motor oil annually. Since 1960, however, the production of re-refined oil has steadily declined. In 1981, for example, out of about 1.2 billion gal of automobile lubricating oil and 1.6 billion gal of industrial lubricating oils purchased, 25 U.S. rerefineries

unknown authors

357

A consistent approach to large eddy simulation using adaptive mesh refinement  

SciTech Connect (OSTI)

The large eddy simulation of turbulent flows is discussed with particular attention paid to the issue of commutation of differentiation and filtering. Multi-level adaptive mesh refinement is proposed as a means of mostly avoiding commutation errors where increased grid resolution is required to capture key flow features. The strategy is to employ multiple uniform grids in a nested hierarchy using a constant-width filter for each grid. It is shown that commutivity of fine and coarse grid filters must be enforced in order to consistently relate variables at different refinement levels. Methods for treating fine grid boundaries and walls are also discussed. It is shown that errors associated with boundary treatments are small and localized.

Cook, A.W.

1999-09-01T23:59:59.000Z

358

A refined Bloch group and the third homology of SL_2 of a field.  

E-Print Network [OSTI]

We use the properties of the refined Bloch group of a field to prove that H_3 of SL_2 of a global field is never finitely generated, and to calculate - up to some 2-torsion - H_3 of SL_2 of local fields with finite residue field of odd characteristic. We also give lower bounds for the 3-torsion in the H_3 of SL_2 of rings of S-integers.

Kevin Hutchinson

359

Grain refinement of cast niobium via equal channel angular extrusion/annealing  

E-Print Network [OSTI]

. Production of 11 km Long Nb3Al Strand by Jelly Roll??????????.......... 10 7. Cryogen-Free 23 T Hybrid Magnet???????????????????? 11 C. Niobium Based Variable Capacitors???????????????????.......... 11 D. Niobium Based Electrolyte Capacitors...????????????????????????. 17 3. Goforth?s Strain Model????????????????????????... 18 H. Grain Refinement of Tantalum via ECAE/Annealing??????????????... 18 I. Previous Work on Cold-Rolled Niobium Bicrystal???????????????... 19 J. Previous Work of the Effects...

Bryant, Don O.

2007-04-25T23:59:59.000Z

360

Vacuum-induction melting, refining, and casting of uranium and its alloys  

SciTech Connect (OSTI)

The vacuum-induction melting (VIM), refining, and casting of uranium and its alloys are discussed. Emphasis is placed on historical development, VIM equipment, crucible and mold design, furnace atmospheres, melting parameters, impurity pickup, ingot quality, and economics. The VIM procedures used to produce high-purity, high-quality sound ingots at the US Department of Energy Rocky Flats Plant are discussed in detail.

Jackson, R.J.

1989-10-11T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Characterization of U-6Nb ingots produced via the electron beam cold hearth refining process  

SciTech Connect (OSTI)

A study was undertaken at Lawrence Livermore National Laboratory to characterize uranium, 6% niobium ingots produced via electron beam melting, hearth refining and continuous casting and to compare this material with conventional VIM/skull melt/VAR material. Samples of both the ingot and feed material were analyzed for niobium and trace metallic elements, carbon, oxygen and nitrogen. This material was also inspected metallographically and via microprobe analysis.

McKoon, R.H.

1997-11-14T23:59:59.000Z

362

,"U.S. Sales for Resale, Total Refiner Motor Gasoline Sales Volumes"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2.Reformulated, Average Refiner Gasoline Prices"Sales Volumes

363

,"U.S. Sales to End Users, Total Refiner Motor Gasoline Sales Volumes"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2.Reformulated, Average Refiner Gasoline Prices"SalesSales

364

Using high-order methods on adaptively refined block-structured meshes - discretizations, interpolations, and filters.  

SciTech Connect (OSTI)

Block-structured adaptively refined meshes (SAMR) strive for efficient resolution of partial differential equations (PDEs) solved on large computational domains by clustering mesh points only where required by large gradients. Previous work has indicated that fourth-order convergence can be achieved on such meshes by using a suitable combination of high-order discretizations, interpolations, and filters and can deliver significant computational savings over conventional second-order methods at engineering error tolerances. In this paper, we explore the interactions between the errors introduced by discretizations, interpolations and filters. We develop general expressions for high-order discretizations, interpolations, and filters, in multiple dimensions, using a Fourier approach, facilitating the high-order SAMR implementation. We derive a formulation for the necessary interpolation order for given discretization and derivative orders. We also illustrate this order relationship empirically using one and two-dimensional model problems on refined meshes. We study the observed increase in accuracy with increasing interpolation order. We also examine the empirically observed order of convergence, as the effective resolution of the mesh is increased by successively adding levels of refinement, with different orders of discretization, interpolation, or filtering.

Ray, Jaideep; Lefantzi, Sophia; Najm, Habib N.; Kennedy, Christopher A.

2006-01-01T23:59:59.000Z

365

Constrained-Transport Magnetohydrodynamics with Adaptive-Mesh-Refinement in CHARM  

SciTech Connect (OSTI)

We present the implementation of a three-dimensional, second order accurate Godunov-type algorithm for magneto-hydrodynamic (MHD), in the adaptivemesh-refinement (AMR) cosmological code CHARM. The algorithm is based on the full 12-solve spatially unsplit Corner-Transport-Upwind (CTU) scheme. Thefluid quantities are cell-centered and are updated using the Piecewise-Parabolic- Method (PPM), while the magnetic field variables are face-centered and areevolved through application of the Stokes theorem on cell edges via a Constrained- Transport (CT) method. The so-called ?multidimensional MHD source terms?required in the predictor step for high-order accuracy are applied in a simplified form which reduces their complexity in three dimensions without loss of accuracyor robustness. The algorithm is implemented on an AMR framework which requires specific synchronization steps across refinement levels. These includeface-centered restriction and prolongation operations and a reflux-curl operation, which maintains a solenoidal magnetic field across refinement boundaries. Thecode is tested against a large suite of test problems, including convergence tests in smooth flows, shock-tube tests, classical two- and three-dimensional MHD tests,a three-dimensional shock-cloud interaction problem and the formation of a cluster of galaxies in a fully cosmological context. The magnetic field divergence isshown to remain negligible throughout. Subject headings: cosmology: theory - methods: numerical

Miniatii, Francesco; Martin, Daniel

2011-05-24T23:59:59.000Z

366

Acta Cryst. (1992). B48, 42-59 Refinement of Rubredoxin from Desulfovibrio vulgaris at 1.0 ~ with and without  

E-Print Network [OSTI]

42 Acta Cryst. (1992). B48, 42-59 Refinement of Rubredoxin from Desulfovibrio vulgaris at 1- ing R(I) factor between symmetry-related reflections was 5.8%. The model was refined by least parameters and isotropic temperature factors for non-H atoms were used in the refinement. There were 18532

367

MODIS Cloud-Top Property Refinements for Collection 6 BRYAN A. BAUM, W. PAUL MENZEL, RICHARD A. FREY, DAVID C. TOBIN, ROBERT E. HOLZ,  

E-Print Network [OSTI]

MODIS Cloud-Top Property Refinements for Collection 6 BRYAN A. BAUM, W. PAUL MENZEL, RICHARD A the Collection-6 refinements in the Moderate Resolution Imaging Spectroradiometer (MODIS) operational cloud Satellite Observations (CALIPSO) instantaneous cloud products throughout the course of algorithm refinement

Baum, Bryan A.

368

Acta Cryst. (1990). B46, 833-841 Refinement of Glucose Isomerase from Streptomyces albus at 1-65/~ with Data from  

E-Print Network [OSTI]

833 Acta Cryst. (1990). B46, 833-841 Refinement of Glucose Isomerase from Streptomyces albus at 1 has been analysed and refined at 1-65 A. The space group is/222, with cell dimensions a = 93.9 (1), b data took less than 2 days. The coordinates of the Arthrobacterglucose isomerase refined

369

Adaptive Mesh Refinement Solution Techniques for the Multigroup SN Transport Equation Using a Higher-Order Discontinuous Finite Element Method  

E-Print Network [OSTI]

In this dissertation, we develop Adaptive Mesh Refinement (AMR) techniques for the steady-state multigroup SN neutron transport equation using a higher-order Discontinuous Galerkin Finite Element Method (DGFEM). We propose two error estimations, a...

Wang, Yaqi

2010-01-16T23:59:59.000Z

370

On the Doubly Refined Enumeration of Alternating Sign Matrices and Totally Symmetric Self-Complementary Plane Partitions  

E-Print Network [OSTI]

We prove the equality of doubly refined enumerations of Alternating Sign Matrices and of Totally Symmetric Self-Complementary Plane Partitions using integral formulae originating from certain solutions of the quantum Knizhnik--Zamolodchikov equation.

T. Fonseca; P. Zinn-Justin

2008-03-11T23:59:59.000Z

371

Steam System Opportunity Assessment for the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries: Main Report  

SciTech Connect (OSTI)

This report assesses steam generation and use in the pulp and paper, chemical, and petroleum refining industries, and estimates the potential for energy savings from implementation of steam system performance and efficiency improvements.

Not Available

2002-10-01T23:59:59.000Z

372

Refined understanding of sulfur amino acid nutrition in hybrid striped bass, Morone chrysops (male symbol) x M. saxatilis (female symbol)  

E-Print Network [OSTI]

to methionine supported the lowest responses. Inclusion of MHA or AlimetTM did not affect TAN excretion of HSB. These findings will aid in refining diet formulations for HSB to ensure adequate sulfur amino acid nutrition....

Kelly, Mark Christopher

2005-08-29T23:59:59.000Z

373

Grain refinement using equal channel angular extrusion in bulk sections of copper 101 and aluminum alloys 3003 and 6061  

E-Print Network [OSTI]

GRAIN REFINEMENT USING EQUAL CHANNEL ANGULAR EXTRUSION IN BULK SECTIONS OF COPPER 101 AND ALUMINUM ALLOYS 3003 AND 6061 A Thesis by STEPHANE FERRASSE Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1995 Major Subject: Mechanical Engineering GRAIN REFINEMENT USING EQUAL CHANNEL ANGULAR EXTRUSION IN BULK SECTIONS OF COPPER 101 AND ALUMINUM ALLOYS 3003 AND 6061 A Thesis by STEPHANE FERRASSE...

Ferrasse, Stephane

1995-01-01T23:59:59.000Z

374

Hydrogen storage compositions  

DOE Patents [OSTI]

Compositions for hydrogen storage and methods of making such compositions employ an alloy that exhibits reversible formation/deformation of BH4- anions. The composition includes a ternary alloy including magnesium, boron and a metal and a metal hydride. The ternary alloy and the metal hydride are present in an amount sufficient to render the composition capable of hydrogen storage. The molar ratio of the metal to magnesium and boron in the alloy is such that the alloy exhibits reversible formation/deformation of BH4- anions. The hydrogen storage composition is prepared by combining magnesium, boron and a metal to prepare a ternary alloy and combining the ternary alloy with a metal hydride to form the hydrogen storage composition.

Li, Wen; Vajo, John J.; Cumberland, Robert W.; Liu, Ping

2011-04-19T23:59:59.000Z

375

Continuous Fiber Ceramic Composites  

SciTech Connect (OSTI)

Fiber-reinforced ceramic composites demonstrate the high-temperature stability of ceramics--with an increased fracture toughness resulting from the fiber reinforcement of the composite. The material optimization performed under the continuous fiber ceramic composites (CFCC) included a series of systematic optimizations. The overall goals were to define the processing window, to increase the robustinous of the process, to increase process yield while reducing costs, and to define the complexity of parts that could be fabricated.

None

2002-09-01T23:59:59.000Z

376

A Method to Increase Current Density in a Mono Element Internal Tin Processed Superconductor Utilizing Zr Oxide to Refine Grain Size  

SciTech Connect (OSTI)

The effect of Oxygen on (Nb1Zr)3Sn multifilament conductors manufactured by the Mono Element Internal Tin (MEIT) process was explored to improve the current density by refining the grain size. This followed work first done by General Electric on the Nb3Sn tape process. Techniques to fabricate the more difficult Nb1Zr composites are described and allowed fabrication of long lengths of .254 mm diameter wire from an 88.9 mm diameter billet. Oxygen was incorporated through the use of SnO2 mixed with tin powder and incorporated into the core. These were compared to samples with Ti+Sn and Cu+Sn cores. Heat treatments covered the range of 700 C to 1000 C. Current density vs. H, grain size, and reaction percentages are provided for the materials tested. The Oxygen gave superior results in the temperature range of 815-1000 C. It also stabilized the filament geometry of the array in comparison to the other additions at the higher temperatures. At 815 C a peak in layer Jc yielded values of 2537 A/mm2 at 12 T and 1353 A/mm2 at 15T, 8-22% and 30-73% greater respectively than 700 C values. Results with Oxygen at high temperature show the possibility of high speed continuous reaction of the composite versus the current batch or react in place methods. In general the Ti additions gave superior results at the lower reaction temperature. Future work is suggested to determine if the 815 C reaction temperature can lead to higher current density in high tin (Nb1Zr+Ox)3Sn conductors. A second technique incorporated oxygen directly into the Nb1Zr rods through heat treatment with Nb2O5 at 1100 C for 100 hours in vacuum prior to extrusion. The majority of the filaments reduced properly in the composite but some local variations in hardness led to breakage at smaller diameters.

Bruce A. Zeitlin, Eric Gregory

2008-04-07T23:59:59.000Z

377

Novel Composite Cathode Structures  

Broader source: Energy.gov (indexed) [DOE]

Chemical Sciences and Engineering Division Argonne National Laboratory May 16, 2012 Novel Composite Cathode Structures This presentation does not contain any proprietary or...

378

Leptons in Composite MFV  

E-Print Network [OSTI]

We study the lepton sector of composite Higgs models with partial compositeness. The standard anarchic scenario is in conflict with the absence of observable charged lepton flavor violation. This tension can be completely solved in MFV scenarios that require either left-handed or right-handed SM leptons to be equally composite. Constraints on this scenario are weak and the composite lepton partners could be as light as few hundreds GeVs with interesting LHC signatures. The contribution to the muon (g-2) in theories where the Higgs is a pseudo Nambu-Goldstone boson is also discussed.

Michele Redi

2014-07-21T23:59:59.000Z

379

Electrically conductive cellulose composite  

DOE Patents [OSTI]

An electrically conductive cellulose composite includes a cellulose matrix and an electrically conductive carbonaceous material incorporated into the cellulose matrix. The electrical conductivity of the cellulose composite is at least 10 .mu.S/cm at 25.degree. C. The composite can be made by incorporating the electrically conductive carbonaceous material into a culture medium with a cellulose-producing organism, such as Gluconoacetobacter hansenii. The composites can be used to form electrodes, such as for use in membrane electrode assemblies for fuel cells.

Evans, Barbara R.; O'Neill, Hugh M.; Woodward, Jonathan

2010-05-04T23:59:59.000Z

380

Direct Reduction of Waste through Refining of DOE Metal Assets - 13632  

SciTech Connect (OSTI)

CVMR{sup R} presents a technology for refining nickel from the enrichment barrier materials of the DOE that is proven through 100 years of use by the metals industry. CVMR{sup R} applies modern controls, instrumentation for process and monitoring of the system, and innovative production methods to produce a wide spectrum of products that generate new technology applications and improvements to our society and economy. CVMR{sup R} will receive barrier materials as a secure operation and size reduce the metal to a shred that is fed to a carbonylation reactor where nickel is reacted with carbon monoxide and generate nickel carbonyl. The carbonyl will be filtered and decomposed with heat to form a variety of products that include high value nano powders, coated substrates, net shapes and pure nickel. The residue from the reactor will retain radionuclides from enrichment activities. The carbon monoxide will only react and extract nickel under the operating conditions to leave volumetric contamination in the unreacted residue. A demonstration plant was designed and built by CVMR{sup R} and operated by BWXT, to demonstrate the systems capabilities to DOE in 2006. A pilot plant operation precedes the detailed design of the nickel refinery and provides essential data for design, safe work practices, waste characterizations and system kinetics and confirms the project feasibility. CVMR{sup R} produces nickel products that are cleaner than the nickel in U.S. commerce and used by industry today. The CVMR{sup R} process and systems for nickel refining is well suited for DOE materials and will provide value through environmental stewardship, recovery of high value assets, and support of the DOE environmental remediation programs as the refined nickel generates additional long term benefits to local communities. (authors)

Hargett, Michael C.; Terekhov, Dimitri; Khozan, Kamran M. [Chemical Vapour Metal Refining - CVMR (United States)] [Chemical Vapour Metal Refining - CVMR (United States)

2013-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

A modeling approach for the purification of group III metals (Ga and In) by zone refining  

SciTech Connect (OSTI)

An 'experimental friendly' model for zone refining process is proposed which predicts effective zone length in each refining passes that would lead to maximal solute removal, thereby leading to ultrapurification of the material for use in high-end electronic applications. The effectiveness of the model is experimentally tested and validated by purifying gallium from 4N (99.99%) to 6N5 (99.99995%) purity level at 30% yield and {approx}6 N at 70% yield with respect to targeted metallic impurities such as, Zn, Cu, Al, Ca, Bi, Si, Pb, Ni, Mn, and Fe, as analyzed by inductively coupled plasma optical emission spectrometry, graphite furnace atomic absorption spectrometry, and high resolution inductively coupled plasma mass spectrometry techniques. The distribution coefficient (k) of all the targeted impurities, detected in the purified gallium, was found to be less than 1. By comparing the experimentally obtained axial concentration profiles with the theoretical calculations, the k values of some detected impurities, such as Ca and Al, are determined to be {approx}0.8, Pb and Bi to be 0.7, Cu to be 0.65, and Fe to be 0.68, which prove the efficiency of the proposed model in reducing the concentration of these vulnerable impurities significantly. Following the model and as evidenced from the theoretical predictions, degradation of material purification containing a mixture of impurities having k less than as well as greater than 1 was elucidated experimentally by zone refining of 4N6 indium. Only a 40% yield of 5N6 indium was obtained, thereby highlighting the intricacies and problem areas in ultrapurification of these types of material.

Ghosh, K.; Dhar, S. [Department of Electronic Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009 (India); Mani, V. N. [Ultra-pure Materials Division, Centre for Materials for Electronics Technology (C-MET), IDA Phase-III, Cherlapally, HCL (Post), Hyderabad 500051 (India)

2008-07-15T23:59:59.000Z

382

Anomalous Scaling and Refined Similarity of an Active Scalar in a Model of Homogeneous Turbulent Convection  

E-Print Network [OSTI]

Anomalous scaling in the statistics of an active scalar in homogeneous turbulent convection is studied using a dynamical shell model. We extend refined similarity ideas for homogeneous and isotropic turbulence to homogeneous turbulent convection and attribute the origin of the anomalous scaling to variations of the entropy transfer rate. We verify the consequences and thus the validity of our hypothesis by showing that the conditional statistics of the active scalar and the velocity at fixed values of entropy transfer rate are not anomalous but have simple scaling with exponents given by dimensional considerations, and that the intermittency corrections are given by the scaling exponents of the moments of the entropy transfer rate.

Emily S. C. Ching; W. C. Cheng

2007-11-07T23:59:59.000Z

383

A new refined theory of plates with transverse shear deformation for moderately thick and thick plates  

E-Print Network [OSTI]

In this paper we propose a new refined shear deformation plate theory which possesses a series of desirable features, the most salient of which are as follows: (i) The loads, which are generally considered to be applied on the middle surface of the plate, act on the upper surface of the plate; (ii) The equations are applicable to the calculation of the stresses in isotropic plates and provide the same order of accuracy as several theories with second order shear deformation effects; (iii) It constitutes a theory, in the sense defined by Love, since it gives easy expressions for application to problems in different fields in architecture and civil engineering

Valle, Jose Miguel Martinez

2015-01-01T23:59:59.000Z

384

Refined reconstruction and calibration of the missing transverse energy in the ATLAS detector  

E-Print Network [OSTI]

The measurement of the missing transverse energy Etmiss is fundamental for many analyses at LHC. Good Etmiss resolution and calibration are essential for searches of new physics as well as precise measurements. We describe a refined reconstruction and calibration of Etmiss developed by ATLAS and its performances on events containing Z and W bosons. The data sample was collected in proton-proton collisions at a center-of-mass energy of 7 TeV, and corresponds to an integrated luminosity of about 36 pb-1. The determination of the absolute scale of the Etmiss, fundamental for determining systematic uncertainties in all analysis involving Etmiss measurements, is also presented.

Marianna Testa on behalf of the ATLAS collaboration

2012-01-26T23:59:59.000Z

385

Refined Cauchy and Littlewood identities, plane partitions and symmetry classes of alternating sign matrices  

E-Print Network [OSTI]

We prove and conjecture some new symmetric function identities, which equate the generating series of 1. Plane partitions, subject to certain restrictions and weightings, and 2. Alternating sign matrices, subject to certain symmetry properties. The left hand side of each of our identities is a simple refinement of a relevant Cauchy or Littlewood identity, allowing them to be interpreted as generating series for plane partitions. The right hand side of each identity is a partition function of the six-vertex model, on a relevant domain. These can be interpreted as generating series for alternating sign matrices, using the well known bijection with six-vertex model configurations.

Dan Betea; Michael Wheeler

2014-05-30T23:59:59.000Z

386

Progress toward uranium scrap recycling via electron beam cold hearth refining  

SciTech Connect (OSTI)

A 250 kW electron beam cold hearth refining (EBCHR) melt furnace at Lawrence Livermore National Laboratory (LLNL) has been in operation for over a year producing 5.5 in.-diameter ingots of various uranium alloys. Production of in-specification uranium-6%-niobium (U-6Nb) alloy ingots has been demonstrated using Virgin feedstock. A vibratory scrap feeder has been installed on the system and the ability to recycle chopped U-6Nb scrap has been established. A preliminary comparison of vacuum arc remelted (VAR) and electron beam (EB) melted product is presented.

McKoon, R.H.

1994-12-15T23:59:59.000Z

387

Progress toward uranium scrap recycling via Electron Cold Hearth Refining (EBCHR)  

SciTech Connect (OSTI)

A 250 kW electron beam cold hearth refining (EBCHR) melt furnace at Lawrence Livermore National Laboratory (LLNL) has been in operation for over a year producing 5.5 in.-diameter ingots of various uranium alloys. Production of in-specification uranium-6% - niobium (U-6Nb) alloy ingots has been demonstrated using virgin feedstock. A vibratory scrap feeder has been installed on the system and the ability to recycle chopped U-6Nb scrap has been established. A preliminary comparison of vacuum arc remelted (VAR) and electron beam (EB) melted product is presented.

McKoon, R.H.

1994-12-22T23:59:59.000Z

388

Progress toward uranium scrap recycling via electron beam cold hearth refining  

SciTech Connect (OSTI)

A 250 kW electron beam cold hearth refining (EBCHR) melt furnace at Lawrence Livermore National Laboratory (LLNL) has been in operation for over a year producing 5.5 in.-diameter ingots of various uranium alloys. Production of in-specification uranium 6% niobium (U-6Nb) alloy ingots has been demonstrated using virgin feedstock. A vibratory scrap feeder has been installed on the system and the ability to recycle chopped U-6Nb scrap has been established. A preliminary comparison of vacuum arc remelted (VAR) and electron beam (EB) melted product is presented.

McKoon, R.H. [Lawrence Livermore National Lab., CA (United States)

1994-12-31T23:59:59.000Z

389

Studies of the refining of crude cottonseed oil and its solutions in commercial hexane  

E-Print Network [OSTI]

oil. In a more recent patent (17) Clayton used 1.5 per cent by weight of 29 per cent ammonium hydroxide to refine soybean oil. The well-mixed oil and ammonia solution is heated to 200?F., then rapidly cooled to 150?F., and then centrifuged... neutralized by soda ash. The soap- stock is removed in a multi-tray thickener. The neutralized miscella is then washed countercurrently with dilute caustic soda solution then with water. It is claimed that this method substantially reduces oil loss...

Zeitoun, Mohamed Ali

1958-01-01T23:59:59.000Z

390

Growth of barley exposed to solvent refined coal (SRC) materials added to soil  

SciTech Connect (OSTI)

The growth of barley plants (Hordeum vulgare) grown in Ritzville silt loam soil, treated with solvent refined coal material, SRC solid (SRC I) and SRC liquid (SRC II) was examined. Although the SRC materials will not be introduced to soil or surface waters in normal uses, they could be spilled during transportation. Such spills could contaminate surface waters and agricultural, rangeland and forest soils, possibly causing acute or chronic damage to plants and also provide a way for certain inorganic and organic materials to enter food chains.

Cline, J.F.; Rickard, W.H.; Thiede, M.E.

1980-01-01T23:59:59.000Z

391

Quantitative phase analysis of Mg:ZrO{sub 2} nanoparticles by Rietveld refinement method  

SciTech Connect (OSTI)

To quantify the structural phases of nanocrystalline ZrO{sub 2} doped with Mg ions of varying concentrations (3, 5, 10, 15 and 20%) and annealed at different temperatures. Magnesia doped zirconia was prepared by chemical co-precipitation method and annealed up to 1000°C. The monoclinic and tetragonal phases present in Mg:ZrO{sub 2} were quantified using Rietveld refinement analysis of the X-ray diffraction data and compared with the Direct method based on peak intensity calculations. Tetragonal phase was dominant in the 600°C annealed Mg:ZrO{sub 2} for all Mg concentrations.

Balaji, V., E-mail: thangadurai.p@gmail.com; Senthilkumaran, S., E-mail: thangadurai.p@gmail.com; Thangadurai, P., E-mail: thangadurai.p@gmail.com [Center for Nano Science and Technology, Pondicherry University, Puducherry- 605014 (India)

2014-04-24T23:59:59.000Z

392

Microstructural refinement of W-Ni-Fe heavy alloys by alloying additions  

SciTech Connect (OSTI)

This communication describes the effect of alloying additions on grain refinement in tungsten heavy alloys and the resulting changes in mechanical properties. The body-centered-cubic refractory metals, like molybdenum and tantalum, have total solubility in tungsten and a high solubility in the matrix. The solubility of the additive in tungsten provides a means to increase the strength by solid-solution hardening. Alternatively, the solubility of tungsten in the matrix is the key to grain growth and possible strengthening by a reduction in the grain-growth size.

German, R.M.

1988-12-01T23:59:59.000Z

393

Implementation of the refined Deutsch-Jozsa algorithn on a 3-bit NMR quantum computer  

E-Print Network [OSTI]

We implemented the refined Deutsch-Jozsa algorithm on a 3-bit nuclear magnetic resonance quantum computer, which is the meaningful test of quantum parallelism because qubits are entangled. All of the balanced and constant functions were realized exactly. The results agree well with theoretical predictions and clearly distinguish the balanced functions from constant functions. Efficient refocusing schemes were proposed for the soft z-pulse and J-coupling and it is proved that the thermal equilibrium state gives the same results as the pure state for this algorithm.

Jaehyun Kim; Jae-Seung Lee; Soonchil Lee; Chaejoon Cheong

1999-10-04T23:59:59.000Z

394

,"U.S. Total Refiner Acquisition Cost of Crude Oil"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National and Regional Data; Row: NAICS Codes; Column: EnergyShale ProvedTexas"BruneiReserves in Nonproducing Reservoirs (MillionNatural GasRefiner

395

Table 3a. Imported Refiner Acquisition Cost of Crude Oil, Projected vs. Actual  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ <Information Administration (EIA) 10 MECS Survey Data9c : U.S.Welcome toTotala. Imported Refiner

396

,"U.S. Reformulated, Average Refiner Gasoline Prices"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2.Reformulated, Average Refiner Gasoline Prices" ,"Click

397

,"U.S. Motor Gasoline Refiner Sales Volumes"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ <Information Administration (EIA) 103. Relative2. Occupancy ofAviationPrices" ,"ClickRefiner

398

CARBON-CARBON COMPOSITE ALLCOMP Carbon-Carbon Composite  

E-Print Network [OSTI]

materials. MATERIALS AND DESIRED DATA Carbon-Carbon Composites(T300 & SWB): Crush Resistance, Bend StrengthCARBON-CARBON COMPOSITE ALLCOMP Carbon-Carbon Composite · C-C supplied in two forms · T300: C strength 4340 steel, carbon-carbon composite, and Carbon-Silicon Carbide composite were tested to examine

Rollins, Andrew M.

399

Atmospheric Thermodynamics Composition  

E-Print Network [OSTI]

1 Atmospheric Thermodynamics Ch1 Composition Ch2 Laws Ch3 Transfers Ch12 EnergyBalance Ch4 Water Ch Sciences: Atmospheric Thermodynamics Instructor: Lynn Russell, NH343 http #12;2 Review from Ch. 1 · Thermodynamic quantities · Composition · Pressure · Density · Temperature

Russell, Lynn

400

Biodegradable synthetic bone composites  

DOE Patents [OSTI]

The invention provides for a biodegradable synthetic bone composition comprising a biodegradable hydrogel polymer scaffold comprising a plurality of hydrolytically unstable linkages, and an inorganic component; such as a biodegradable poly(hydroxyethylmethacrylate)/hydroxyapatite (pHEMA/HA) hydrogel composite possessing mineral content approximately that of human bone.

Liu, Gao; Zhao, Dacheng; Saiz, Eduardo; Tomsia, Antoni P.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Molybdenum disilicide matrix composite  

DOE Patents [OSTI]

A composition consisting of an intermetallic compound, molybdenum disilicide, which is reinforced with VS silicon carbide whiskers dispersed throughout it and a method of making the reinforced composition. Use of the reinforcing material increases fracture toughness at low temperatures and strength at high temperatures, as compared to pure molybdenum disilicide.

Petrovic, John J. (Los Alamos, NM); Carter, David H. (Los Alamos, NM); Gac, Frank D. (Los Alamos, NM)

1991-01-01T23:59:59.000Z

402

Molybdenum disilicide matrix composite  

DOE Patents [OSTI]

A composition consisting of an intermetallic compound, molybdenum disilicide, which is reinforced with VS silicon carbide whiskers dispersed throughout it and a method of making the reinforced composition. Use of the reinforcing material increases fracture toughness at low temperatures and strength at high temperatures, as compared to pure molybdenum disilicide.

Petrovic, John J. (Los Alamos, NM); Carter, David H. (Los Alamos, NM); Gac, Frank D. (Los Alamos, NM)

1990-01-01T23:59:59.000Z

403

Liquid crystalline composites containing phyllosilicates  

DOE Patents [OSTI]

The present invention provides phyllosilicate-polymer compositions which are useful as liquid crystalline composites. Phyllosilicate-polymer liquid crystalline compositions of the present invention can contain a high percentage of phyllosilicate while at the same time be transparent. Because of the ordering of the particles liquid crystalline composite, liquid crystalline composites are particularly useful as barriers to gas transport.

Chaiko, David J.

2004-07-13T23:59:59.000Z

404

Refining Chandra/ACIS Subpixel Event Repositioning Using a Backside Illuminated CCD Model  

E-Print Network [OSTI]

Subpixel event repositioning (SER) techniques have been demonstrated to significantly improve the already unprecedented spatial resolution of Chandra X-ray imaging with the Advanced CCD Imaging Spectrometer (ACIS). Chandra CCD SER techniques are based on the premise that the impact position of events can be refined, based on the distribution of charge among affected CCD pixels. ACIS SER models proposed thus far are restricted to corner split (3- and 4-pixel) events, and assume that such events take place at the split pixel corners. To improve the event counting statistics, we modified the ACIS SER algorithms to include 2-pixel split events and single pixel events, using refined estimates for photon impact locations. Furthermore, simulations that make use of a high-fidelity backside illuminated (BI) CCD model demonstrate that mean photon impact positions for split events are energy dependent leading to further modification of subpixel event locations according to event type and energy, for BI ACIS devices. Testing on Chandra CCD X-ray observations of the Orion Nebula Cluster indicates that these modified SER algorithms further improve the spatial resolution of Chandra/ACIS, to the extent that the spreading in the spatial distribution of photons is dominated by the High Resolution Mirror Assembly, rather than by ACIS pixelization.

Jingqiang Li; Joel H. Kastner; Gregory Y. Prigozhin; Norbert S. Schulz

2003-11-06T23:59:59.000Z

405

A refined empirical stability criterion for nonlinear Schroedinger solitons under spatiotemporal forcing  

E-Print Network [OSTI]

We investigate the dynamics of travelling oscillating solitons of the cubic NLS equation under an external spatiotemporal forcing of the form $f(x,t) = a \\exp[iK(t)x]$. For the case of time-independent forcing a stability criterion for these solitons, which is based on a collective coordinate theory, was recently conjectured. We show that the proposed criterion has a limited applicability and present a refined criterion which is generally applicable, as confirmed by direct simulations. This includes more general situations where $K(t)$ is harmonic or biharmonic, with or without a damping term in the NLS equation. The refined criterion states that the soliton will be unstable if the "stability curve" $p(\\v)$, where $p(t)$ and $\\v(t)$ are the normalized momentum and the velocity of the soliton, has a section with a negative slope. Moreover, for the case of constant $K$ and zero damping we use the collective coordinate solutions to compute a "phase portrait" of the soliton where its dynamics is represented by two-dimensional projections of its trajectories in the four-dimensional space of collective coordinates. We conjecture, and confirm by simulations, that the soliton is unstable if a section of the resulting closed curve on the portrait has a negative sense of rotation.

Franz G. Mertens; Niurka R. Quintero; I. V. Barashenkov; A. R. Bishop

2011-06-28T23:59:59.000Z

406

Hydrodynamical adaptive mesh refinement simulations of turbulent flows - II. Cosmological simulations of galaxy clusters  

E-Print Network [OSTI]

The development of turbulent gas flows in the intra-cluster medium and in the core of a galaxy cluster is studied by means of adaptive mesh refinement (AMR) cosmological simulations. A series of six runs was performed, employing identical simulation parameters but different criteria for triggering the mesh refinement. In particular, two different AMR strategies were followed, based on the regional variability of control variables of the flow and on the overdensity of subclumps, respectively. We show that both approaches, albeit with different results, are useful to get an improved resolution of the turbulent flow in the ICM. The vorticity is used as a diagnostic for turbulence, showing that the turbulent flow is not highly volume-filling but has a large area-covering factor, in agreement with previous theoretical expectations. The measured turbulent velocity in the cluster core is larger than 200 km/s, and the level of turbulent pressure contribution to the cluster hydrostatic equilibrium is increased by using the improved AMR criteria.

L. Iapichino; J. C. Niemeyer

2008-07-01T23:59:59.000Z

407

Solvent Refined Coal (SRC) process. Quarterly technical progress report, January 1979-March 1979  

SciTech Connect (OSTI)

This report summarizes the progress of the Solvent Refined Coal (SRC) Project by the Pittsburg and Midway Coal Mining Co. for the Department of Energy for the period January 1, 1979 to March 31, 1979. Activities included the operation and modification of the Solvent Refined Coal Pilot Plant at Fort Lewis, Washington; the Process Development Unit P-99 at Harmarville, Pennsylvania; and research at Merriam Laboratory in Merriam, Kansas. The Pilot Plant processed Powhatan No. 5 Coal in the SRC-II mode of operation studying the effect of coal particle size and system temperature on coal slurry blending and the effect of carbon monoxide concentration in the reaction feed gas on process yields. January and February were spent completing installation of a fourth High Pressure Separator on Process Development Unit P-99 to better simulate operating conditions for the proposed Demonstration Plant. During March, one run was completed at P-99 feeding Pittsburgh Seam Coal from the Powhatan No. 5 Mine. Merriam investigations included a study of the effect of iron containing additives on SRC-I operation, the addition of carbon monoxide to the feed gas, utilization of a hydrogenated solvent (Cresap process solvent) in the SRC-I mode under both normal and short residence time operating conditions, and development of a simulated distillation technique to determine the entire boiling range distribution of product oils.

Not Available

1980-02-01T23:59:59.000Z

408

Environmental-control considerations in the production and use of solvent-refined coal  

SciTech Connect (OSTI)

This report presents the results of an environmental-control study of the solvent-refined-coal (SRC) process. The report complements a previous Argonne report: Assessment of Status of Technology for Solvent Refining of Coal (ANL/ECT-3, Appendix B). The current review separates discussion of environmental control into two broad sections: production of SRC fuels, both solid and liquid, and their utilization. Control technologies are briefly reviewed for the gas, liquid, and solid wastes generated by the production of SRC. For an SRC-I plant, producing solid product, potential waste streams are then identified and discussed in terms of applicable control technologies and promulgated EPA standards. The SRC-production section concludes with a discussion of the biological activity of certain products of an SRC-II plant, producing liquid fuel. The author summarizes recent experimental findings and recommends accelerated research at SRC plants to quantify the effects of biological activity and develop measures needed to reduce those effects. No unusual environmental-control problems have been detected in the combustion of SRC fuels. It is recommended, however, that more SRC combustion studies be made and that the solid and liquid fuels used in them be derived from a variety of parent coals. Such studies will establish the broad data base needed to demonstrate that SRC fuels burn efficiently within environmentally safe limits.

Huang, H.S.

1980-12-01T23:59:59.000Z

409

Ceramic-silicide composites  

SciTech Connect (OSTI)

The area of ceramic-silicide composites represents a merging of structural ceramics and structural silicides. Such ceramic-silicide composites can possess the desirable characteristics of both classes of compounds. Important structural ceramics are materials such as Si{sub 3}N{sub 4}, SiC, Al{sub 2}O{sub 3}, and ZrO{sub 2}, which possess covalent, ionic, or mixed covalent-ionic atomic bonding. An important structural silicide is MoSi{sub 2}, which possesses mixed covalent-metallic bonding. The arena of ceramic-silicide composites encompasses both composites where the structural silicide is the matrix and the structural ceramic is the reinforcement, and composites where the structural ceramic is the matrix and the structural silicide is the reinforcement. In the former area, MoSi{sub 2}-SiC, MoSi{sub 2}-ZrO{sub 2}, and MoSi{sub 2}-Al{sub 2}O{sub 3} composites are discussed. In the latter area, Si{sub 3}N{sub 4}-MoSi{sub 2} composites are described.

Petrovic, J.J.

1998-12-01T23:59:59.000Z

410

Self-consistent QM/MM methodologies for structural refinement of photosystem II and other macromolecules of biological interest  

SciTech Connect (OSTI)

The combination of quantum mechanics and molecular mechanics (QM/MM) is one of the most promising approaches to study the structure, function, and properties of proteins and nucleic acids. However, there some instances in which the limitations of either the MM (lack of a proper electronic description) or QM (limited to a few number of atoms) methods prevent a proper description of the system. To address this issue, we review here our approach to fine-tune the structure of biological systems using post-QM/MM refinements. These protocols are based on spectroscopy data, and/or partitioning of the system to extend the QM description to a larger region of a protein. We illustrate these methodologies through applications to several biomolecules, which were pre-optimized at the QM/MM level and then further refined using postQM/MM refinement methodologies: mod(QM/MM), which refines the atomic charges of the residues included in the MM region accounting for polarization effects; mod(QM/MM)-opt that partition the MM region in smaller parts and optimizes each part in an iterative. self-consistent way, and the Polarized-Extended X-Ray Absorption Fine Structure (P-EXAFS) fitting procedure, which fine-tune the atomic coordinates to reproduce experimental polarized EXAFS spectra. The first two techniques were applied to the guanine quadruplex. while the P-EXAFS refinement was applied to the oxygen evolving complex of photosystem II.

Batista, Enrique R [Los Alamos National Laboratory; Sproviero, Eduardo M [YALE UNIV; Newcomer, Michael [YALE UNIV; Gascon, Jose A [YALE UNIV; Batista, Victor S [YALE UNIV

2008-01-01T23:59:59.000Z

411

Short courses in Composite Materials  

E-Print Network [OSTI]

Short courses in Composite Materials Overview The ability to tailor the material properties used. Combining the adaptability of composites with clear weight savings, whilst tailoring materials properties Airbus and Glyndr University, the Advanced Composites Training and Development Centre educates current

Davies, John N.

412

Electrically conductive composite material  

DOE Patents [OSTI]

An electrically conductive composite material is disclosed which comprises a conductive open-celled, low density, microcellular carbon foam filled with a non-conductive polymer or resin. The composite material is prepared in a two-step process consisting of first preparing the microcellular carbon foam from a carbonizable polymer or copolymer using a phase separation process, then filling the carbon foam with the desired non-conductive polymer or resin. The electrically conductive composites of the present invention has a uniform and consistent pattern of filler distribution, and as a result is superior over prior art materials when used in battery components, electrodes, and the like. 2 figs.

Clough, R.L.; Sylwester, A.P.

1989-05-23T23:59:59.000Z

413

Electrically conductive composite material  

DOE Patents [OSTI]

An electrically conductive composite material is disclosed which comprises a conductive open-celled, low density, microcellular carbon foam filled with a non-conductive polymer or resin. The composite material is prepared in a two-step process consisting of first preparing the microcellular carbon foam from a carbonizable polymer or copolymer using a phase separation process, then filling the carbon foam with the desired non-conductive polymer or resin. The electrically conductive composites of the present invention has a uniform and consistent pattern of filler distribution, and as a result is superior over prior art materials when used in battery components, electrodes, and the like. 2 figs.

Clough, R.L.; Sylwester, A.P.

1988-06-20T23:59:59.000Z

414

Electrically conductive composite material  

DOE Patents [OSTI]

An electrically conductive composite material is disclosed which comprises a conductive open-celled, low density, microcellular carbon foam filled with a non-conductive polymer or resin. The composite material is prepared in a two-step process consisting of first preparing the microcellular carbon foam from a carbonizable polymer or copolymer using a phase separation process, then filling the carbon foam with the desired non-conductive polymer or resin. The electrically conductive composites of the present invention has a uniform and consistant pattern of filler distribution, and as a result is superior over prior art materials when used in battery components, electrodes, and the like.

Clough, Roger L. (Albuquerque, NM); Sylwester, Alan P. (Albuquerque, NM)

1989-01-01T23:59:59.000Z

415

Composite metal membrane  

DOE Patents [OSTI]

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, Nathaniel M. (Espanola, NM); Dye, Robert C. (Los Alamos, NM); Snow, Ronny C. (Los Alamos, NM); Birdsell, Stephan A. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

416

Composite metal membrane  

DOE Patents [OSTI]

A composite metal membrane including a first metal layer of Group IVB met or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof is provided together with a process for the recovery of hydrogen from a gaseous mixture including contacting a hydrogen-containing gaseous mixture with a first side of a nonporous composite metal membrane including a first metal of Group IVB metals or Group VB metals, the first metal layer sandwiched between two layers of an oriented metal of palladium, platinum or alloys thereof, and, separating hydrogen from a second side of the nonporous composite metal membrane.

Peachey, N.M.; Dye, R.C.; Snow, R.C.; Birdsell, S.A.

1998-04-14T23:59:59.000Z

417

Hard metal composition  

DOE Patents [OSTI]

A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 wt % boron carbide and the remainder a metal mixture comprising from 70 to 90% tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 and 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.

Sheinberg, H.

1983-07-26T23:59:59.000Z

418

Hard metal composition  

DOE Patents [OSTI]

A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 weight percent boron carbide and the remainder a metal mixture comprising from 70 to 90 percent tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 to 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.

Sheinberg, Haskell (Los Alamos, NM)

1986-01-01T23:59:59.000Z

419

Composite Dirac Neutrinos  

E-Print Network [OSTI]

We present a mechanism that naturally produces light Dirac neutrinos. The basic idea is that the right-handed neutrinos are composite. Any realistic composite model must involve `hidden flavor' chiral symmetries. In general some of these symmetries may survive confinement, and in particular, one of them manifests itself at low energy as an exact $B-L$ symmetry. Dirac neutrinos are therefore produced. The neutrinos are naturally light due to compositeness. In general, sterile states are present in the model, some of them can naturally be warm dark matter candidates.

Yuval Grossman; Dean J Robinson

2011-01-25T23:59:59.000Z

420

Flexible composite radiation detector  

DOE Patents [OSTI]

A flexible composite scintillator was prepared by mixing fast, bright, dense rare-earth doped powdered oxyorthosilicate (such as LSO:Ce, LSO:Sm, and GSO:Ce) scintillator with a polymer binder. The binder is transparent to the scintillator emission. The composite is seamless and can be made large and in a wide variety of shapes. Importantly, the composite can be tailored to emit light in a spectral region that matches the optimum response of photomultipliers (about 400 nanometers) or photodiodes (about 600 nanometers), which maximizes the overall detector efficiency.

Cooke, D. Wayne (Santa Fe, NM); Bennett, Bryan L. (Los Alamos, NM); Muenchausen, Ross E. (Los Alamos, NM); Wrobleski, Debra A. (Los Alamos, NM); Orler, Edward B. (Los Alamos, NM)

2006-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Hybrid matrix fiber composites  

DOE Patents [OSTI]

Hybrid matrix fiber composites having enhanced compressive performance as well as enhanced stiffness, toughness and durability suitable for compression-critical applications. The methods for producing the fiber composites using matrix hybridization. The hybrid matrix fiber composites include two chemically or physically bonded matrix materials, whereas the first matrix materials are used to impregnate multi-filament fibers formed into ribbons and the second matrix material is placed around and between the fiber ribbons that are impregnated with the first matrix material and both matrix materials are cured and solidified.

Deteresa, Steven J.; Lyon, Richard E.; Groves, Scott E.

2003-07-15T23:59:59.000Z

422

Composition for detecting uranyl  

DOE Patents [OSTI]

The present invention relates to an indicator composition for use in spectrophotometric detection of a substance in a solution, and a method for making the composition. Useful indicators are sensitive to the particular substance being measured, but are unaffected by the fluid and other chemical species that may be present in the fluid. Optical indicators are used to measure the uranium concentration of process solutions in facilities for extracting uranium from ores, production of nuclear fuels, and reprocessing of irradiated fuels. The composition comprises an organohalide covalently bonded to an indicator for the substance, in such a manner that the product is itself an indicator that provides increased spectral resolution for detecting the substance. The indicator is preferably arsenazo III and the organohalide is preferably cyanuric chloride. These form a composition that is ideally suited for detecting uranyl.

Baylor, L.C.; Stephens, S.M.

1994-01-01T23:59:59.000Z

423

Lightweight polymer concrete composites  

SciTech Connect (OSTI)

Lightweight polymer concrete composites have been developed with excellent insulating properties. The composites consist of lightweight aggregates such as expanded perlites, multicellular glass nodules, or hollow alumina silicate microspheres bound together with unsaturated polyester or epoxy resins. These composites, known as Insulating Polymer Concrete (IPC), have thermal conductivites from 0.09 to 0.19 Btu/h-ft-/sup 0/F. Compressive strengths, dependent upon the aggregates used, range from 1000 to 6000 psi. These materials can be precast or cast-in-place on concrete substrates. Recently, it has been demonstrated that these materials can also be sprayed onto concrete and other substrates. An overlay application of IPC is currently under way as dike insulation at an LNG storage tank facility. The composites have numerous potentials in the construction industry such as insulating building blocks or prefabricated insulating wall panels.

Fontana, J.J.; Steinberg, M.; Reams, W.

1985-08-01T23:59:59.000Z

424

Composite zeolite membranes  

DOE Patents [OSTI]

A new class of composite zeolite membranes and synthesis techniques therefor has been invented. These membranes are essentially defect-free, and exhibit large levels of transmembrane flux and of chemical and isotopic selectivity.

Nenoff, Tina M. (Albuquerque, NM); Thoma, Steven G. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

425

Multifracture of ceramic composites  

SciTech Connect (OSTI)

This work presents a mechanistic model for the multifracture process of uniaxially reinforced fibrous ceramic composites under monotonically increasing tension parallel to the fiber direction. The model employs an energy criterion to account for the progression of matrix cracks, bridged by intact fibers, and Weibull failure statistics to relate the failure of the fibers. Consideration is given to the interactions between the foregoing failure processes as well as to the effects of various material parameters on the response of the composite.

Weitsman, Y.J. (Oak Ridge National Lab., TN (United States)); Zhu, H. (Tennessee Univ., Knoxville, TN (United States))

1992-03-01T23:59:59.000Z

426

Agouti polypeptide compositions  

DOE Patents [OSTI]

Disclosed are methods and compositions comprising novel agouti polypeptides and the polynucleotides which encode them. Also disclosed are DNA segments encoding these proteins derived from human and murine cell lines, and the use of these polynucleotides and polypeptides in a variety of diagnostic and therapeutic applications. Methods, compositions, kits, and devices are also provided for identifying compounds which are inhibitors of agouti activity, and for altering fatty acid synthetase activity and intracellular calcium levels in transformed cells.

Woychik, Richard P. (Orinda, CA); Bultman, Scott J. (Lakewood, OH); Michaud, Edward J. (Kingston, TN)

2001-10-30T23:59:59.000Z

427

Polyarylether composition and membrane  

DOE Patents [OSTI]

A composition including a polyarylether copolymer is provided. The copolymer includes a polyarylether backbone; and a sulfonated oligomeric group bonded to the polyarylether suitable for use as a cation conducting membrane. Method of bonding a sulfonated oligomeric group to the polyarylether backbone to form a polyarylether copolymer. The membrane may be formed from the polyarylether copolymer composition. The chain length of the sulfonated oligomeric group may be controlled to affect or control the ion conductivity of the membrane.

Hung, Joyce (Auburn, AL); Brunelle, Daniel Joseph (Burnt Hills, NY); Harmon, Marianne Elisabeth (Redondo Beach, CA); Moore, David Roger (Albany, NY); Stone, Joshua James (Worcester, NY); Zhou, Hongyi (Niskayuna, NY); Suriano, Joseph Anthony (Clifton Park, NY)

2010-11-09T23:59:59.000Z

428

Composite desiccant structure  

DOE Patents [OSTI]

A composite formed of small desiccant particles retained in a dark matrix composed of a porous binder containing a transition metal oxide with pores to provide moisture transport with respect to the particles, and metallic fibers to remove the heat of condensation during dehumidification and provide heat for the removal of moisture during regeneration. The moisture absorbing properties of the composite may be regenerated by exposure of the dark matrix to solar radiation with dehumidification occurring at night.

Fraioli, Anthony V. (Hawthorn Woods, IL); Schertz, William W. (Batavia, IL)

1987-01-01T23:59:59.000Z

429

Composite desiccant structure  

DOE Patents [OSTI]

This patent discloses a composite formed of small desiccant particles retained in a dark matrix composed of a porous binder containing a transition metal oxide with pores to provide moisture transport with respect to the particles, and metallic fibers to remove the heat of condensation during dehumidification and provide heat for the removal of moisture during regeneration. The moisture absorbing properties of the composite may be regenerated by exposure of the dark matrix to solar radiation with dehumidification occurring at night.

Fraioli, A.V.; Schertz, W.W.

1984-06-06T23:59:59.000Z

430

Reasons and current outlook for the sale of federal royalty oil to small and independent refiners  

SciTech Connect (OSTI)

The Department of Interior receives a royalty from oil production on federal lands. Interior can take the royalty as a cash payment or a portion of the oil itself, which it can then sell to small and independent refiners who are determined to be in need of crude oil supplies. Sales of this so-called royalty oil have been held about every 3 years since 1970. In early 1985, Interior announced its intention to terminate the program because of its declining importance and proposed legislation to that effect. While GAO sees no compelling need to legislatively restrict Interior's ability to hold future royalty oil sales now or in the future, it has identified several ways to improve the program's effectiveness. This report examines Interior's basis for the most recent sales and the current status and need for the royalty oil program and discusses ways in which its administration might be improved if future sales are held.

Not Available

1985-08-26T23:59:59.000Z

431

A refined ephemeris and phase resolved X-ray spectroscopy of the Geminga pulsar  

E-Print Network [OSTI]

We present a refined phase-connected post-glitch ephemeris for the Geminga pulsar that is a good fit to all the post-glitch data from EGRET, ASCA, and XMM. We also present the results of phase-resolved spectroscopy of two XMM X-ray observations of the Geminga pulsar obtained in 2002 and 2004. An investigation is made into a previously claimed existence of a small hot spot on the neutron star surface. We conclude that that interpretation was more likely an artifact of an overly restrictive assumption used to fit the phase-resolved spectra, namely, that the spectral index of the non-thermal component is constant. When we allow the spectral index to vary as a function of rotation phase, we find systematic variations in spectral index, and such fits do not require an additional, hot blackbody component.

M. S. Jackson; J. P. Halpern

2005-09-02T23:59:59.000Z

432

Lance for fuel and oxygen injection into smelting or refining furnace  

DOE Patents [OSTI]

A furnace 10 for smelting iron ore and/or refining molten iron 20 is equipped with an overhead pneumatic lance 40, through which a center stream of particulate coal 53 is ejected at high velocity into a slag layer 30. An annular stream of nitrogen or argon 51 enshrouds the coal stream. Oxygen 52 is simultaneously ejected in an annular stream encircling the inert gas stream 51. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it is needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus 84 to react with carbon monoxide gas rising from slag layer 30, thereby adding still more heat to the furnace.

Schlichting, Mark R. (Chesterton, IN)

1994-01-01T23:59:59.000Z

433

The adaptivity refines approximate solutions of ill-posed problems due to the relaxation property  

E-Print Network [OSTI]

Adaptive Finite Element Method (adaptivity) is known to be an effective numerical tool for some ill-posed problems. The key advantage of the adaptivity is the image improvement with local mesh refinements. A rigorous proof of this property is the central part of this paper. In terms of Coefficient Inverse Problems with single measurement data, the authors consider the adaptivity as the second stage of a two-stage numerical procedure. The first stage delivers a good approximation of the exact coefficient without an advanced knowledge of a small neighborhood of that coefficient. This is a necessary element for the adaptivity to start iterations from. Numerical results for the two-stage procedure are presented for both computationally simulated and experimental data.

Larisa Beilina; Michael V. Klibanov

2012-10-27T23:59:59.000Z

434

Goal-Oriented Adaptive Mesh Refinement for the Quasicontinuum Approximation of a Frenkel-Kontorova Model  

E-Print Network [OSTI]

The quasicontinuum approximation is a method to reduce the atomistic degrees of freedom of a crystalline solid by piecewise linear interpolation from representative atoms that are nodes for a finite element triangulation. In regions of the crystal with a highly nonuniform deformation such as around defects, every atom must be a representative atom to obtain sufficient accuracy, but the mesh can be coarsened away from such regions to remove atomistic degrees of freedom while retaining sufficient accuracy. We present an error estimator and a related adaptive mesh refinement algorithm for the quasicontinuum approximation of a generalized Frenkel-Kontorova model that enables a quantity of interest to be efficiently computed to a predetermined accuracy.

Marcel Arndt; Mitchell Luskin

2007-11-12T23:59:59.000Z

435

Development of the electron beam melting and refining in the Eastern Europe  

SciTech Connect (OSTI)

A open research potential for the many R & D projects, as well as developed industrial structures exist in the Central and Eastern Europe countries. Now the economy crisis in this part of the world, due to the positive exiting democratic changes and to the transition from central planned to the market economy are a challenge. Bridging the research and industrial potential of the Eastern Europe to the developed economies is a way to keep the knowledge and people with activity in this field and to extend the future market of EB products. A brief revue of the institutions and a very short general information for the EB melting and refinement development in the Eastern Europe countries is given.

Mladenov, G.M. [Institute of Electronics, Sofia (Bulgaria)

1994-12-31T23:59:59.000Z

436

Proceedings of the conference on electron beam melting and refining - state of the art 1994  

SciTech Connect (OSTI)

The volume: Proceedings of the Conference on Electron Beam Melting and Refining-State of the Art 1994 covers many aspects of electron beam production, process control, components, and applications. Included were several papers from the defunct Soviet Bloc nations concerning the specifications and uses for their electron beam furnaces. Main topics of the conference were: Electron Beam (EB) Equipment; Safety and Analytical Aspects related to EB Melting; Material Processing with EB; Other Applications for EB; and A Look at EB in the East. EB has many uses, several papers mentioned the recycling of uranium scrap, the casting of heat resistant or corrosion resistant alloys, or the improved microstructure of alloys with the technique.

Bakish, R. [ed.

1994-12-31T23:59:59.000Z

437

Lance for fuel and oxygen injection into smelting or refining furnace  

DOE Patents [OSTI]

A furnace for smelting iron ore and/or refining molten iron is equipped with an overhead pneumatic lance, through which a center stream of particulate coal is ejected at high velocity into a slag layer. An annular stream of nitrogen or argon enshrouds the coal stream. Oxygen is simultaneously ejected in an annular stream encircling the inert gas stream. The interposition of the inert gas stream between the coal and oxygen streams prevents the volatile matter in the coal from combusting before it reaches the slag layer. Heat of combustion is thus more efficiently delivered to the slag, where it is needed to sustain the desired reactions occurring there. A second stream of lower velocity oxygen can be delivered through an outermost annulus to react with carbon monoxide gas rising from slag layer, thereby adding still more heat to the furnace. 7 figures.

Schlichting, M.R.

1994-12-20T23:59:59.000Z

438

An adaptively refined phase-space element method for cosmological simulations and collisionless dynamics  

E-Print Network [OSTI]

Dark matter numerical simulations and the N-body method are essential for understanding how structure forms and evolves in the Universe. However, the discrete nature of N-body simulations can affect its accuracy when modelling collisionless systems. We introduce a new approach to simulate the gravitational evolution of cold collisionless fluids by solving the Vlasov-Poisson equations in terms of adaptively refineable "Lagrangian phase space elements". These geometrical elements are piecewise smooth maps between three-dimensional Lagrangian space and six-dimensional Eulerian phase space and approximate the continuum structure of the distribution function. They allow for dynamical adaptive splitting to follow the evolution even in regions of very strong mixing. We discuss various test problems which demonstrate the correctness and performance of our method. We show that it has several advantages compared to standard N-body algorithms by i) explicitly tracking the fine-grained distribution function, ii) naturall...

Hahn, Oliver

2015-01-01T23:59:59.000Z

439

Refined model of the {Fe9} magnetic molecule from low-temperature inelastic neutron scattering studies  

SciTech Connect (OSTI)

We present a refined model of the {Fe9} tridiminished icosahedron magnetic molecule system. This molecule was originally modeled as being composed of two ({Fe3} and {Fe6}) clusters, with the Fe3+ ions within each cluster being coupled via exchange interactions, but with no coupling between the clusters. The present inelastic neutron scattering (INS) measurements were used to probe the low-lying energy spectrum of {Fe9}, and these results demonstrate that the previously published model of two uncoupled clusters is incomplete. To achieve agreement between the experiment and theory, we have augmented the model with relatively small exchange coupling between the clusters. A combination of Lanczos matrix diagonalization and quantum Monte Carlo simulations have been used to achieve good agreement between the experimental data and the improved model of the full {Fe9} system despite the complexity of this model (with Hilbert space dimension >107).

Engelhardt, Larry [Francis Marion University; Demmel, Franz [Rutherford Appleton Laboratory; Luban, Marshall [Ames Laboratory; Timco, Grigore A [The University of Manchester; Tuna, Floriana [The University of Manchester; Winpenny, Richard E [The University of Manchester

2014-06-01T23:59:59.000Z

440

Verification, optimization and refinement of a direct-inverse transonic wing design method including weak viscous interaction  

E-Print Network [OSTI]

and Refinement of a. Direct-Inverse Transonic Wing Design Method Including Weak Viscous Interaction. (August 1989) Robert R. Ratcliff, B. S. , Texas A&M University Chair oi' Advisory Committee: Dr. Leland A. Carlson New developments in the direct-inverse wing... AND DISCUSSION . 92 VI V. 1 Bound&ary L&iyer and Wake Effects . . V. 2 Spanwise Grid Skewness V. 3 Wing Planform Effects V. 4 Initial Profile Efi'ects V. 5 Pressure Distribution Compatibility V. 6 Grid Refinement Effects . . V. 7 Fixed Trailing Edge...

Ratcliff, Robert R.

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

Characterization report. Romanian petroleum refining sector. A sector overview of capability, energy consumption, environmental impacts, May 1992. Export trade information  

SciTech Connect (OSTI)

The objective of the report is to provide data that will serve as a basis for the modernization and optimization of the economic performance of the petroleum refining industry of Romania. The report addresses the current status of the petroleum refining industry so that recommendations providing low cost economies to improve energy efficiency and environmental control at each refinery can be prepared. Following the collection of data on operating variables, equipment, and refinery impact on the environment, a computerized data base was prepared, which is the subject of a separate report.

Not Available

1992-05-01T23:59:59.000Z

442

Claudio Schepke: Online Parallel Mesh Refinement for Climatological Applications Weather forecasts for long periods of time have emerged as increasingly important.  

E-Print Network [OSTI]

Claudio Schepke: Online Parallel Mesh Refinement for Climatological Applications Weather forecasts, this presentation discusses how to explore parallelism at different levels for climatological models, like OLAM

Wichmann, Felix

443

Hybrid Characteristics: 3D radiative transfer for parallel adaptive mesh refinement hydrodynamics  

E-Print Network [OSTI]

We have developed a three-dimensional radiative transfer method designed specifically for use with parallel adaptive mesh refinement hydrodynamics codes. This new algorithm, which we call hybrid characteristics, introduces a novel form of ray tracing that can neither be classified as long, nor as short characteristics, but which applies the underlying principles, i.e. efficient execution through interpolation and parallelizability, of both. Primary applications of the hybrid characteristics method are radiation hydrodynamics problems that take into account the effects of photoionization and heating due to point sources of radiation. The method is implemented in the hydrodynamics package FLASH. The ionization, heating, and cooling processes are modelled using the DORIC ionization package. Upon comparison with the long characteristics method, we find that our method calculates the column density with a similarly high accuracy and produces sharp and well defined shadows. We show the quality of the new algorithm in an application to the photoevaporation of multiple over-dense clumps. We present several test problems demonstrating the feasibility of our method for performing high resolution three-dimensional radiation hydrodynamics calculations that span a large range of scales. Initial performance tests show that the ray tracing part of our method takes less time to execute than other parts of the calculation (e.g. hydrodynamics and adaptive mesh refinement), and that a high degree of efficiency is obtained in parallel execution. Although the hybrid characteristics method is developed for problems involving photoionization due to point sources, the algorithm can be easily adapted to the case of more general radiation fields.

Erik-Jan Rijkhorst; Tomasz Plewa; Anshu Dubey; Garrelt Mellema

2005-05-10T23:59:59.000Z

444

Development of a performance-based industrial energy efficiency indicator for corn refining plants.  

SciTech Connect (OSTI)

Organizations that implement strategic energy management programs have the potential to achieve sustained energy savings if the programs are carried out properly. A key opportunity for achieving energy savings that plant managers can take is to determine an appropriate level of energy performance by comparing their plant's performance with that of similar plants in the same industry. Manufacturing facilities can set energy efficiency targets by using performance-based indicators. The U.S. Environmental Protection Agency (EPA), through its ENERGY STAR{reg_sign} program, has been developing plant energy performance indicators (EPIs) to encourage a variety of U.S. industries to use energy more efficiently. This report describes work with the corn refining industry to provide a plant-level indicator of energy efficiency for facilities that produce a variety of products--including corn starch, corn oil, animal feed, corn sweeteners, and ethanol--for the paper, food, beverage, and other industries in the United States. Consideration is given to the role that performance-based indicators play in motivating change; the steps needed to develop indicators, including interacting with an industry to secure adequate data for an indicator; and the actual application and use of an indicator when complete. How indicators are employed in the EPA's efforts to encourage industries to voluntarily improve their use of energy is discussed as well. The report describes the data and statistical methods used to construct the EPI for corn refining plants. Individual equations are presented, as are the instructions for using them in an associated Excel spreadsheet.

Boyd, G. A.; Decision and Information Sciences; USEPA

2006-07-31T23:59:59.000Z

445

Composite Likelihood January 30, 2012  

E-Print Network [OSTI]

Composite Likelihood Nancy Reid January 30, 2012 with Cristiano Varin and thanks to Don Fraser maximum likelihood estimate Composite Likelihood Brown, January 2013 2 #12;... background warning these to form composite likelihood Composite Likelihood Brown, January 2013 3 #12;Terminology Model f(y; ), y

Reid, Nancy

446

Nanostructured metal-polyaniline composites  

SciTech Connect (OSTI)

Metal-polyaniline (PANI) composites are provided together with a process of preparing such composites by an electrodeless process. The metal of the composite can have nanoscale structural features and the composites can be used in applications such as catalysis for hydrogenation reactions and for analytical detection methods employing SERS.

Wang, Hsing-Lin (Los Alamos, NM); Li, Wenguang (Elgin, IL); Bailey, James A. (Los Alamos, NM); Gao, Yuan (Brewer, ME)

2010-08-31T23:59:59.000Z

447

Liquid crystalline composites containing phyllosilicates  

DOE Patents [OSTI]

The present invention provides barrier films having reduced gas permeability for use in packaging and coating applications. The barrier films comprise an anisotropic liquid crystalline composite layer formed from phyllosilicate-polymer compositions. Phyllosilicate-polymer liquid crystalline compositions of the present invention can contain a high percentage of phyllosilicate while remaining transparent. Because of the ordering of the particles in the liquid crystalline composite, barrier films comprising liquid crystalline composites are particularly useful as barriers to gas transport.

Chaiko; David J. (Naperville, IL)

2007-05-08T23:59:59.000Z

448

Global molecular structure and interfaces : refining an RNA : RNA complex structure using solution x-ray scattering data.  

SciTech Connect (OSTI)

Determining the global architecture of multicomponent systems is a central problem in understanding biomacromolecular machines. Defining interfaces among components and the global structure of multicomponent systems is a central problem in understanding the biological interactions on a molecular level. We demonstrate that solution X-ray scattering data can be used to precisely determine intermolecular interfaces from just the subunit structures, in the complete absence of intermolecular NMR restraints using an example of a 30 kDa RNA-RNA complex. The backbone root-mean-square deviation (rmsd) between structures that are determined using the scattering data and using intermolecular distance restraints is about 0.4 {angstrom}. Further, we refined the global structure of the complex using scattering data as a global restraint. The rmsd in backbone structures that are determined with and without the scattering data refinement is about 3.2 {angstrom}, suggesting the impact of the refinement to the overall structure. Information about the 'global correctness' of solution RNA structures could not be practically obtained otherwise, due to the molecular nature of the RNA molecules, but could only be defined by the scattering data together by residual dipolar couplings. This method provides a powerful new approach for refining global structures of macromolecular complexes whose subunits are elongated.

Zuo, X.; Wang, J.; Foster, T. R.; Schwieters, C. D.; Tiede, D. M.; Butcher, S. E.; Wang, Y.-X.; Chemical Sciences and Engineering Division; NCI-Frederick; Univ. of Wisconin at Madison; NIH

2008-03-19T23:59:59.000Z

449

Using Knowledge-Based Neural Networks to Improve Algorithms: Refining the Chou-Fasman Algorithm for Protein Folding  

E-Print Network [OSTI]

for Protein Folding Richard Maclin Jude W. Shavlik Computer Sciences Dept. University of Wisconsin 1210 W learning Theory refinement Neural networks Finite-state automata Protein folding Chou-Fasman algorithm-Fasman algorithm, a method for predicting how globular proteins fold. Empirical evidence shows

Maclin, Rich

450

How smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies, Amos Ron  

E-Print Network [OSTI]

of wavelets from multiresolution analysis, as well as in the study of subdivision algorithms is well are the univariate splines and the multivariate box splines (cf. [2]), and for these spline spaces the rigidHow smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies

Ron, Amos

451

How smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies, Amos Ron  

E-Print Network [OSTI]

analysis, as well as in the study of subdivision algorithms is well-known, well-understood and well of such spaces are the univariate splines and the multivariate box splines (cf. [2]), and for these spline spacesHow smooth is the smoothest function in a given refinable space? Albert Cohen, Ingrid Daubechies

Liblit, Ben

452

Neutron and X-ray diffraction and empirical potential structure refinement modelling of magnesium stabilised amorphous calcium  

E-Print Network [OSTI]

Neutron and X-ray diffraction and empirical potential structure refinement modelling of magnesium online xxxx Keywords: Amorphous calcium carbonate; EPSR modelling; Neutron diffraction; X-ray diffraction Amorphous calcium carbonate (ACC) plays a key role in biomineralisation processes in sea organisms. Neutron

Benning, Liane G.

453

LJournal of Alloys and Compounds 291 (1999) 94101 The simultaneous powder X-ray and neutron diffraction refinement of two  

E-Print Network [OSTI]

melting of metals in the The intermetallic ternary transition metal nitrides and presence of carbon]. These phases are of interest decomposition of transition metal tris­ethylenediamine to the solid state chemist diffraction refinement of two h-carbide type nitrides, Fe Mo N and Co Mo N, prepared by3 3 3 3 ammonolysis

zur Loye, Hans-Conrad

454

Saccharide antifreeze compositions  

DOE Patents [OSTI]

The invention provides an antifreeze glycolipid compounds and composition comprising a polysaccharide moiety of Formula I; ##STR00001## wherein D-Manp represents a D-mannopyranose moiety, D-Xylp represents a D-xylopyranose moiety, and n is about 5 to about 70; and one or more lipid moieties covalently linked to the polysaccharide moiety of Formula I or electrostatically associated with the polysaccaride moiety for Formula I. The antifreeze glycolipid compounds and compositions can be used for a variety of industrial, agricultural, medical, and cosmetic applications where recrystallization-inhibition, cyroprotection, or cryopreservation is desired. The antifreeze glycolipid compounds or compositions can be used as, for example, as cryoprotectants for tissue preservation and transplantation, improving the texture of processed frozen food and frozen meats, frostbit protection, crop protection, and green alternatives for land vehicle antifreeze and aircraft de-icing.

Walters, Kent; Duman, John G; Serianni, Anthony S

2013-12-10T23:59:59.000Z

455

Ceramic composite coating  

DOE Patents [OSTI]

A thin, room-temperature-curing, ceramic composite for coating and patching etal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

Wicks, George G. (Aiken, SC)

1997-01-01T23:59:59.000Z

456

Ceramic composite coating  

DOE Patents [OSTI]

A thin, room-temperature-curing, ceramic composite for coating and patching metal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

Wicks, G.G.

1997-01-21T23:59:59.000Z

457

Analysis of multicomponent evaporation in electron beam melting and refining of titanium alloys  

SciTech Connect (OSTI)

Experimental evidence and a mathematical model are presented to evaluate the effect of beam-scan frequency on composition change in electron-beam melting of titanium alloys. Experiments characterized the evaporation rate of commercially pure (CP) titanium and vapor composition over titanium alloy with up to 6 wt pct aluminum and 4.5 wt pct vanadium, as a function of beam power, scan frequency, and background pressure. These data and thermal mapping of the hearth melt surface are used to estimate activity coefficients of aluminum and vanadium in the hearth. The model describes transient heat transfer in the surface of the melt and provides a means of estimating enhancement of pure titanium evaporation and change in final aluminum composition due to local heating at moderate beam-scan frequencies.

Powell, A.; Szekely, J.; Pal, U. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Materials Science and Engineering; Avyle, J. van den; Damkroger, B. [Sandia National Labs., Albuquerque, NM (United States). Materials Processing Dept.

1997-12-01T23:59:59.000Z

458

Composition for radiation shielding  

DOE Patents [OSTI]

A composition for use as a radiation shield. The shield has a depleted urum core for absorbing gamma rays and a bismuth coating for preventing chemical corrosion and absorbing gamma rays. Alternatively, a sheet of gadolinium may be positioned between the uranium core and the bismuth coating for absorbing neutrons. The composition is preferably in the form of a container for storing materials that emit radiation such as gamma rays and neutrons. The container is preferably formed by casting bismuth around a pre-formed uranium container having a gadolinium sheeting, and allowing the bismuth to cool. The resulting container is a structurally sound, corrosion-resistant, radiation-absorbing container.

Kronberg, James W. (Aiken, SC)

1994-01-01T23:59:59.000Z

459

Composition for absorbing hydrogen  

DOE Patents [OSTI]

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

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

1995-05-02T23:59:59.000Z

460

Abrasion resistant composition  

DOE Patents [OSTI]

A surface covering composition of abrasion resistant character adapted for disposition in overlying bonded relation to a metal substrate. The surface covering composition includes metal carbide particles within a metal matrix at a packing factor of not less than about 0.6. Not less than about 40 percent by weight of the metal carbide particles are characterized by an effective diameter in the range of +14-32 mesh prior to introduction to the metal matrix. Not less than about 3 percent by weight of the metal carbide particles are characterized by an effective diameter of +60 mesh prior to introduction to the metal matrix.

Fischer, Keith D; Barnes, Christopher A; Henderson, Stephen L

2014-05-13T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" 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

The potential impact of proposed hazardous air pollutant legislation on the US refining industry. Final report, Task 9  

SciTech Connect (OSTI)

The Administration has recently submitted a Clean Air Act Bill to Congress which would significantly modify the regulatory treatment of industrial hazardous air pollutants (air toxics). The adverse economic impacts of this legislation on the petroleum refining industry could be substantial. Depending on how EPA interprets the legislative language, the capital costs of compliance for the proposed bill could range from $1.3 to $15.0 billion. At the upper end of the range, costs of this order of magnitude would be over 2.5 times larger than the combined estimated cost of EPAs gasoline volatility (RVP) regulations and the proposed diesel sulfur content regulations. Potential compliance costs could be as much as $0.40 per barrel processed for large, complex refineries and as much as $0.50 per barrel for some small, simple refineries. For perspective, total refining costs, including a normal return on investment, are $4--5 per barrel. Because foreign refineries supplying the US will not be affected by the US air toxics regulations, US refineries may not be able to raise prices sufficiently to recover their compliance costs. For this reason, the air toxic legislation may put US refineries at an economic disadvantage relative to foreign competitors. Even under the best petroleum product market conditions, costs of $0.40 to $0.50 per barrel processed could reduce US Gulf refiner cash operating margins by as much as 29 percent. Under less favorable market conditions, such as the mid-80`s when refiners were losing money, the hazardous air pollutant regulations could greatly increase US refiner operating losses and potentially lead to closure of some marginal refineries.

Not Available

1989-11-01T23:59:59.000Z

462

Composite Load Model Evaluation  

SciTech Connect (OSTI)

The WECC load modeling task force has dedicated its effort in the past few years to develop a composite load model that can represent behaviors of different end-user components. The modeling structure of the composite load model is recommended by the WECC load modeling task force. GE Energy has implemented this composite load model with a new function CMPLDW in its power system simulation software package, PSLF. For the last several years, Bonneville Power Administration (BPA) has taken the lead and collaborated with GE Energy to develop the new composite load model. Pacific Northwest National Laboratory (PNNL) and BPA joint force and conducted the evaluation of the CMPLDW and test its parameter settings to make sure that: • the model initializes properly, • all the parameter settings are functioning, and • the simulation results are as expected. The PNNL effort focused on testing the CMPLDW in a 4-bus system. An exhaustive testing on each parameter setting has been performed to guarantee each setting works. This report is a summary of the PNNL testing results and conclusions.

Lu, Ning; Qiao, Hong (Amy)

2007-09-30T23:59:59.000Z

463

Workshop on Composition Languages  

E-Print Network [OSTI]

Lumpe Co-located with the 8th European Software Engineering Conference and the 9th ACM SIGSOFT Symposium by Jean-Guy Schneider and Markus Lumpe Co-located with the 8th European Software Engineering Conference and the 9th ACM SIGSOFT Symposium on the Foundations of Software Engineering #12;#12;Workshop on Composition

Schneider, Jean-Guy

464

Workshop on Composition Languages  

E-Print Network [OSTI]

European Conference on Object-Oriented Programming #12;#12;Workshop on Composition Languages (WCL 2002 and Thomas Genssler Co-located with the 16th European Conference on Object-Oriented Programming #12;Copyright in Malaga, Spain on June 11, 2002. The workshop was affiliated with the 16th European Conference on Object

Schneider, Jean-Guy

465

BODY COMPOSITION -ENERGY EXPENDITURE  

E-Print Network [OSTI]

BODY COMPOSITION - ENERGY EXPENDITURE Validation of dual, X-ray absorptiometry (DXA) for body for BW, BMC and FC were significantly correlated with scale BW (r== 0.999), chemical calcium (r=0.992) and chemical fat (r= 0.971).Regression analy- sis showed that BW was accurately mea- sured, but FC

Paris-Sud XI, Université de

466

Multigroup radiation hydrodynamics with flux-limited diffusion and adaptive mesh refinement  

E-Print Network [OSTI]

Radiative transfer plays a key role in the star formation process. Due to a high computational cost, radiation-hydrodynamics simulations performed up to now have mainly been carried out in the grey approximation. In recent years, multi-frequency radiation-hydrodynamics models have started to emerge, in an attempt to better account for the large variations of opacities as a function of frequency. We wish to develop an efficient multigroup algorithm for the adaptive mesh refinement code RAMSES which is suited to heavy proto-stellar collapse calculations. Due to prohibitive timestep constraints of an explicit radiative transfer method, we constructed a time-implicit solver based on a stabilised bi-conjugate gradient algorithm, and implemented it in RAMSES under the flux-limited diffusion approximation. We present a series of tests which demonstrate the high performance of our scheme in dealing with frequency-dependent radiation-hydrodynamic flows. We also present a preliminary simulation of a three-dimensional p...

González, Matthias; Commerçon, Benoît; Masson, Jacques

2015-01-01T23:59:59.000Z

467

A Predictive Model of Fragmentation using Adaptive Mesh Refinement and a Hierarchical Material Model  

SciTech Connect (OSTI)

Fragmentation is a fundamental material process that naturally spans spatial scales from microscopic to macroscopic. We developed a mathematical framework using an innovative combination of hierarchical material modeling (HMM) and adaptive mesh refinement (AMR) to connect the continuum to microstructural regimes. This framework has been implemented in a new multi-physics, multi-scale, 3D simulation code, NIF ALE-AMR. New multi-material volume fraction and interface reconstruction algorithms were developed for this new code, which is leading the world effort in hydrodynamic simulations that combine AMR with ALE (Arbitrary Lagrangian-Eulerian) techniques. The interface reconstruction algorithm is also used to produce fragments following material failure. In general, the material strength and failure models have history vector components that must be advected along with other properties of the mesh during remap stage of the ALE hydrodynamics. The fragmentation models are validated against an electromagnetically driven expanding ring experiment and dedicated laser-based fragmentation experiments conducted at the Jupiter Laser Facility. As part of the exit plan, the NIF ALE-AMR code was applied to a number of fragmentation problems of interest to the National Ignition Facility (NIF). One example shows the added benefit of multi-material ALE-AMR that relaxes the requirement that material boundaries must be along mesh boundaries.

Koniges, A E; Masters, N D; Fisher, A C; Anderson, R W; Eder, D C; Benson, D; Kaiser, T B; Gunney, B T; Wang, P; Maddox, B R; Hansen, J F; Kalantar, D H; Dixit, P; Jarmakani, H; Meyers, M A

2009-03-03T23:59:59.000Z

468

Technology status in support of refined technical baseline for the Spent Nuclear Fuel project. Revision 1  

SciTech Connect (OSTI)

The Spent Nuclear Fuel Project (SNFP) has undertaken technology acquisition activities focused on supporting the technical basis for the removal of the N Reactor fuel from the K Basins to an interim storage facility. The purpose of these technology acquisition activities has been to identify technology issues impacting design or safety approval, to establish the strategy for obtaining the necessary information through either existing project activities, or the assignment of new work. A set of specific path options has been identified for each major action proposed for placing the N Reactor fuel into a ``stabilized`` form for interim storage as part of this refined technical basis. This report summarizes the status of technology information acquisition as it relates to key decisions impacting the selection of specific path options. The following specific categories were chosen to characterize and partition the technology information status: hydride issues and ignition, corrosion, hydrogen generation, drying and conditioning, thermal performance, criticality and materials accountability, canister/fuel particulate behavior, and MCO integrity. This report represents a preliminary assessment of the technology information supporting the SNFP. As our understanding of the N Reactor fuel performance develops the technology information supporting the SNFP will be updated and documented in later revisions to this report. Revision 1 represents the incorporation of peer review comments into the original document. The substantive evolution in our understanding of the technical status for the SNFP (except section 3) since July 1995 have not been incorporated into this revision.

Puigh, R.J.; Toffer, H.; Heard, F.J.; Irvin, J.J.; Cooper, T.D.

1995-10-20T23:59:59.000Z

469

Simulating hydromagnetic processes in star formation: introducing ambipolar diffusion into an adaptive mesh refinement code  

E-Print Network [OSTI]

Given the importance of simulating hydromagnetic processes that impact star formation, we have earlier developed a 3D adaptive mesh approach that allows us to include hydromagnetic processes during the formation and evolution of cores, discs, and stars in observed regions of star formation. In this paper, we take the next step in this program - namely - to develop a modified version of the 3D adaptive mesh refinement (AMR) code FLASH in which the ambipolar diffusion of the magnetic field in poorly ionized molecular gas is implemented. We approach the problem using a single-fluid approximation to simplify numerical calculations. In this paper, we present a series of test cases including oblique isothermal and non--isothermal C-shocks. We also present a study of the quasi-static collapse of an initial uniform, self-gravitating, magnetized sphere that is initially supported by its magnetic field against collapse (i.e. magnetically subcritical). Applications to the collapse of a pre-stellar Bonnor-Ebert sphere are presented in a companion paper.

D. F. Duffin; R. E. Pudritz

2008-10-01T23:59:59.000Z

470

Refined Astrometry and Positions for 179 Swift X-ray Afterglows  

E-Print Network [OSTI]

We present a refined catalog for the positions of 179 Gamma-ray burst (GRB) X-ray afterglows observed by the X-ray Telescope (XRT) on Swift prior to November 1, 2006. The positions are determined by detecting X-ray field sources in the deep X-ray images and comparing the centroids to those of optical sources in the Digitized Sky Survey (DSS) red2 catalog or the Sloan Digital Sky Survey (SDSS) DR-5 catalog. Half of the 90% confidence error region radii are 20 ksec) and cannot be generated nearly as rapidly after the GRB. The positions derived for >90% of 77 bursts with optical afterglows are consistent with the optical transient positions, without the need for systematic error. About 20% of the afterglows positions require a sizable shift in the Swift satellite aspect. We discuss the optical/X-ray properties of the field sources and discuss implications of the frame offsets for studies of optically dark GRBs.

N. R. Butler

2006-12-22T23:59:59.000Z

471

Microstructural refinement and enhanced transport properties in binary doped NdFeAsO superconductor  

SciTech Connect (OSTI)

We report the synthesis of Nd{sub 1?x}Ca{sub x}FeAsO{sub 1?2x}F{sub 2x} superconductors using CaF{sub 2} as a binary dopant that provides both holes and electrons by simultaneous substitution of Ca{sup 2+} ions and F{sup ?} ions at Nd{sup 3+} and O{sup 2?} sites, respectively. The sample with x?=?0.2 exhibits a maximum critical temperature (T{sub C}) of 52.3?K and transport critical current density (J{sub C}) of 1240?A/cm{sup 2} at 12?K. An interesting feature observed for binary doped samples is the preferential alignment of (00l) planes and the refinement of microstructure both in terms of grain size and grain connectivity. NdFeAsO based superconductors are already known for their very high critical fields and field independent J{sub C}(H) performance. However, the development of the bulk superconductors with oriented large grains and good grain connectivity has not been reported so far and hence the present work will be definitely a step towards the progress in NdFeAsO based conductor development.

Aswathy, P. M.; Anooja, J. B.; Varghese, Neson; Syamaprasad, U., E-mail: syamcsir@gmail.com [National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum 695019 (India)

2014-02-07T23:59:59.000Z

472

Biocide usage in cooling towers in the electric power and petroleum refining industries  

SciTech Connect (OSTI)

Cooling towers users frequently apply biocides to the circulating cooling water to control growth of microorganisms, algae, and macroorganisms. Because of the toxic properties of biocides, there is a potential for the regulatory controls on their use and discharge to become increasingly more stringent. This report examines the types of biocides used in cooling towers by companies in the electric power and petroleum refining industries, and the experiences those companies have had in dealing with agencies that regulate cooling tower blowdown discharges. Results from a sample of 67 electric power plants indicate that the use of oxidizing biocides (particularly chlorine) is favored. Quaternary ammonia salts (quats), a type of nonoxidizing biocide, are also used in many power plant cooling towers. The experience of dealing with regulators to obtain approval to discharge biocides differs significantly between the two industries. In the electric power industry, discharges of any new biocide typically must be approved in writing by the regulatory agency. The approval process for refineries is less formal. In most cases, the refinery must notify the regulatory agency that it is planning to use a new biocide, but the refinery does not need to get written approval before using it. The conclusion of the report is that few of the surveyed facilities are having any difficulty in using and discharging the biocides they want to use.

Veil, J.; Rice, J.K.; Raivel, M.E.S.

1997-11-01T23:59:59.000Z

473

Solvent Refined Coal (SRC) process. [Runs 49 to 57 and 59 to 62  

SciTech Connect (OSTI)

This report summarizes the progress of the Solvent Refined Coal (SRC) project for the period January 1, 1979 through December 31, 1979. The fourth quarter of 1979 is reported here in detail. Turnaround activities at the Fort Lewis SRC-II Pilot Plant were completed. During the shutdown, installation of Slurry Preheater B was completed. In addition, extensive modifications were completed to improve operability and slurry handling capabilities. The experimental program for testing Slurry Preheater B was revised to improve the data base for design scale-up considerations. Coal feed was established using Powhatan No. 6 coal. Twenty slurry survey tests were designed to establish the effects of varous slurry and heater inlet hydrogen flow rates on heat transfer, heater coil pressure drop, and heater operability. Additional tests were also added to the preheater evaluation program to study the effects of coal concentration, recycle pyridine insoluble concentration and preheater outlet temperatures. During 1979, PDU P-99 completed 13 runs (Runs 49 to 57 and 59 to 62). All these runs were made feeding coal from the Powhatan No. 5 Mine.

None

1980-10-01T23:59:59.000Z

474

Startup due for multi-national Gulf DRB demonstration. [Donor Refined Bitumen  

SciTech Connect (OSTI)

October is the scheduled start-up date for a 450 barrels per day demonstration of the Gulf Donor Refined Bitumen (DRB) process in France. The project will be carried out by a joint venture consisting of Gulf Canada, Alberta Oil Sands Technology and Research Authority, and ASVAHL, a joint venture of three French companies. The Gulf DRB process is a liquid phase hydrocracking process in which hydrogen is made available from a donor rather than as high pressure gaseous hydrogen. Donor liquid is circulated between the feed cracking step and a re-hydrogenation step. The donor is a distillate stream containing substituted tetralins. It is derived from the feedstock in sufficient quantity for the process to be self-sufficient in donor. The DRB process is expected to perform with high reliability because of the simplicity of the process, operation at moderate pressure (800 psi), and the use of uncomplicated off-the-shelf equipment. The process and demonstration plant are described.

Not Available

1986-09-01T23:59:59.000Z

475

Dimensional reduction as a tool for mesh refinement and trackingsingularities of PDEs  

SciTech Connect (OSTI)

We present a collection of algorithms which utilizedimensional reduction to perform mesh refinement and study possiblysingular solutions of time-dependent partial differential equations. Thealgorithms are inspired by constructions used in statistical mechanics toevaluate the properties of a system near a critical point. The firstalgorithm allows the accurate determination of the time of occurrence ofa possible singularity. The second algorithm is an adaptive meshrefinement scheme which can be used to approach efficiently the possiblesingularity. Finally, the third algorithm uses the second algorithm untilthe available resolution is exhausted (as we approach the possiblesingularity) and then switches to a dimensionally reduced model which,when accurate, can follow faithfully the solution beyond the time ofoccurrence of the purported singularity. An accurate dimensionallyreduced model should dissipate energy at the right rate. We construct twovariants of each algorithm. The first variant assumes that we have actualknowledge of the reduced model. The second variant assumes that we knowthe form of the reduced model, i.e., the terms appearing in the reducedmodel, but not necessarily their coefficients. In this case, we alsoprovide a way of determining the coefficients. We present numericalresults for the Burgers equation with zero and nonzero viscosity toillustrate the use of the algorithms.

Stinis, Panagiotis

2007-06-10T23:59:59.000Z

476

Refinement, Validation and Application of Cloud-Radiation Parameterization in a GCM  

SciTech Connect (OSTI)

The research performed under this award was conducted along 3 related fronts: (1) Refinement and assessment of parameterizations of sub-grid scale radiative transport in GCMs. (2) Diagnostic studies that use ARM observations of clouds and convection in an effort to understand the effects of moist convection on its environment, including how convection influences clouds and radiation. This aspect focuses on developing and testing methodologies designed to use ARM data more effectively for use in atmospheric models, both at the cloud resolving model scale and the global climate model scale. (3) Use (1) and (2) in combination with both models and observations of varying complexity to study key radiation feedback Our work toward these objectives thus involved three corresponding efforts. First, novel diagnostic techniques were developed and applied to ARM observations to understand and characterize the effects of moist convection on the dynamical and thermodynamical environment in which it occurs. Second, an in house GCM radiative transfer algorithm (BUGSrad) was employed along with an optimal estimation cloud retrieval algorithm to evaluate the ability to reproduce cloudy-sky radiative flux observations. Assessments using a range of GCMs with various moist convective parameterizations to evaluate the fidelity with which the parameterizations reproduce key observable features of the environment were also started in the final year of this award. The third study area involved the study of cloud radiation feedbacks and we examined these in both cloud resolving and global climate models.

Dr. Graeme L. Stephens

2009-04-30T23:59:59.000Z

477

Refining the associations of the Fermi Large Area Telescope Source Catalogs  

E-Print Network [OSTI]

The Fermi-Large Area Telescope (LAT) First Source Catalog (1FGL) was released in February 2010 and the Fermi-LAT 2-Year Source Catalog (2FGL) appeared in April 2012, based on data from 24 months of operation. Since their releases, many follow up observations of unidentified gamma-ray sources (UGSs) were performed and new procedures to associate gamma-ray sources with potential counterparts at other wavelengths were developed. Here we review and characterize all the associations as published in the 1FGL and 2FGL catalog on the basis of multifrequency archival observations. In particular we located 177 spectra for the low-energy counterparts that were not listed in the previous Fermi catalogs, and in addition we present new spectroscopic observations of 8 gamma-ray blazar candidates. Based on our investigations, we introduce a new counterpart category of "candidate associations" and propose a refined classification for the candidate low-energy counterparts of the Fermi sources. We compare the 1FGL-assigned coun...

Massaro, F; Landoni, M; Paggi, A; Masetti, N; Giroletti, M; Otí-Floranes, H; Chavushyan, V; Jiménez-Bailón, E; Patińo-Álvarez, V; Digel, S W; Smith, Howard A; Tosti, G

2015-01-01T23:59:59.000Z

478

Development of refined MCNPX-PARET multi-channel model for transient analysis in research reactors  

SciTech Connect (OSTI)

Reactivity insertion transients are often analyzed (RELAP, PARET) using a two-channel model, representing the hot assembly with specified power distribution and an average assembly representing the remainder of the core. For the analysis of protected by the reactor safety system transients and zero reactivity feedback coefficients this approximation proves to give adequate results. However, a more refined multi-channel model representing the various assemblies, coupled through the reactivity feedback effects to the whole reactor core is needed for the analysis of unprotected transients with excluded over power and period trips. In the present paper a detailed multi-channel PARET model has been developed which describes the reactor core in different clusters representing typical BR2 fuel assemblies. The distribution of power and reactivity feedback in each cluster of the reactor core is obtained from a best-estimate MCNPX calculation using the whole core geometry model of the BR2 reactor. The sensitivity of the reactor response to power, temperature and energy distributions is studied for protected and unprotected reactivity insertion transients, with zero and non-zero reactivity feedback coefficients. The detailed multi-channel model is compared vs. simplified fewer-channel models. The sensitivities of transient characteristics derived from the different models are tested on a few reactivity insertion transients with reactivity feedback from coolant temperature and density change. (authors)

Kalcheva, S.; Koonen, E. [SCK-CEN, BR2 Reactor Dept., Boeretang 200, 2400 Mol (Belgium); Olson, A. P. [RERTR Program, Nuclear Engineering Div., Argonne National Laboratory, Cass Avenue, Argonne, IL 60439 (United States)

2012-07-01T23:59:59.000Z

479

Technical support to the Solvent Refined Coal (SRC) demonstration projects: assessment of current research and development  

SciTech Connect (OSTI)

A program to demonstrate Solvent Refined Coal (SRC) technology has been initiated by the US Department of Energy (DOE) in partnership with two industrial groups. Project management responsibility has been assigned to the Oak Ridge Operations Office (ORO) of DOE. ORO requested that the Oak Ridge National Laboratory assess current research and development (R and D) activities and develop recommendations for those activities that might contribute to successful completion of the SRC demonstration plant projects. The objectives of this final report are to discuss in detail the problem areas in SRC; to discuss the current and planned R and D investigations relevant to the problems identified; and to suggest appropriate R and D activities in support of designs for the SRC demonstration plants. Four types of R and D activities are suggested: continuation of present and planned activities; coordination of activities and results, present and proposed; extension/redirection of activities not involving major equipment purchase or modifications; and new activities. Important examples of the first type of activity include continuation of fired heater, slurry rheology, and slurry mixing studies at Ft. Lewis. Among the second type of activity, coordination of data acquisition and interpretation is recommended in the areas of heat transfer, vapor/liquid equilibria, and physical properties. Principal examples of recommendations for extension/redirection include screening studies at laboratory scale on the use of carbonaceous precoat (e.g., anthracite) infiltration, and 15- to 30-day continuous tests of the Texaco gasifier at the Texaco Montebello facility (using SRC residues).

Edwards, M.S.; Rodgers, B.R.; Brown, C.H.; Carlson, P.K.; Gambill, W.R.; Gilliam, T.M.; Holmes, J.M.; Krishnan, R.P.; Parsly, L.F.

1980-12-01T23:59:59.000Z

480

Radiation shielding composition  

DOE Patents [OSTI]

A composition for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm.sup.3 and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile.

Quapp, William J. (Idaho Falls, ID); Lessing, Paul A. (Idaho Falls, ID)

2000-12-26T23:59:59.000Z

Note: This page contains sample records for the topic "1949-2012 composite refiner" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Radiation shielding composition  

DOE Patents [OSTI]

A composition for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm.sup.3 and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile.

Quapp, William J. (Idaho Falls, ID); Lessing, Paul A. (Idaho Falls, ID)

1998-01-01T23:59:59.000Z

482

Radiation shielding composition  

DOE Patents [OSTI]

A composition is disclosed for use as a radiation shield. The shield is a concrete product containing a stable uranium aggregate for attenuating gamma rays and a neutron absorbing component, the uranium aggregate and neutron absorbing component being present in the concrete product in sufficient amounts to provide a concrete having a density between about 4 and about 15 grams/cm{sup 3} and which will at a predetermined thickness, attenuate gamma rays and absorb neutrons from a radioactive material of projected gamma ray and neutron emissions over a determined time period. The composition is preferably in the form of a container for storing radioactive materials that emit gamma rays and neutrons. The concrete container preferably comprises a metal liner and/or a metal outer shell. The resulting radiation shielding container has the potential of being structurally sound, stable over a long period of time, and, if desired, readily mobile. 5 figs.

Quapp, W.J.; Lessing, P.A.

1998-07-28T23:59:59.000Z

483

Composite drill pipe  

DOE Patents [OSTI]

A composite pipe segment is formed to include tapered in wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self centering receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces. The distal peripheries of the nested end pieces are then welded to each other and the sandwiched and bonded portions are radially pinned. The composite segment may include imbedded conductive leads and the axial end portions of the end pieces are shaped to form a threaded joint with the next pipe assembly that includes a contact ring in one pipe assembly pierced by a pointed contact in the other to connect the corresponding leads across the joint.

Leslie, James C. (Fountain Valley, CA); Leslie, II, James C. (Mission Viejo, CA); Heard, James (Huntington Beach, CA); Truong, Liem (Anaheim, CA), Josephson; Marvin (Huntington Beach, CA), Neubert; Hans (Anaheim, CA)

2008-12-02T23:59:59.000Z

484

Composite carbon foam electrode  

DOE Patents [OSTI]

Carbon aerogels used as a binder for granularized materials, including other forms of carbon and metal additives, are cast onto carbon or metal fiber substrates to form composite carbon thin film sheets. The thin film sheets are utilized in electrochemical energy storage applications, such as electrochemical double layer capacitors (aerocapacitors), lithium based battery insertion electrodes, fuel cell electrodes, and electrocapacitive deionization electrodes. The composite carbon foam may be formed by prior known processes, but with the solid particles being added during the liquid phase of the process, i.e. prior to gelation. The other forms of carbon may include carbon microspheres, carbon powder, carbon aerogel powder or particles, graphite carbons. Metal and/or carbon fibers may be added for increased conductivity. The choice of materials and fibers will depend on the electrolyte used and the relative trade off of system resistivty and power to system energy.

Mayer, Steven T. (San Leandro, CA); Pekala, Richard W. (Pleasant Hill, CA); Kaschmitter, James L. (Pleasanton, CA)

1997-01-01T23:59:59.000Z

485

Composite carbon foam electrode  

DOE Patents [OSTI]

Carbon aerogels used as a binder for granulated materials, including other forms of carbon and metal additives, are cast onto carbon or metal fiber substrates to form composite carbon thin film sheets. The thin film sheets are utilized in electrochemical energy storage applications, such as electrochemical double layer capacitors (aerocapacitors), lithium based battery insertion electrodes, fuel cell electrodes, and electrocapacitive deionization electrodes. The composite carbon foam may be formed by prior known processes, but with the solid particles being added during the liquid phase of the process, i.e. prior to gelation. The other forms of carbon may include carbon microspheres, carbon powder, carbon aerogel powder or particles, graphite carbons. Metal and/or carbon fibers may be added for increased conductivity. The choice of materials and fibers will depend on the electrolyte used and the relative trade off of system resistivity and power to system energy. 1 fig.

Mayer, S.T.; Pekala, R.W.; Kaschmitter, J.L.

1997-05-06T23:59:59.000Z

486

Composition for radiation shielding  

DOE Patents [OSTI]

A composition for use as a radiation shield is disclosed. The shield has a depleted uranium core for absorbing gamma rays and a bismuth coating for preventing chemical corrosion and absorbing gamma rays. Alternatively, a sheet of gadolinium may be positioned between the uranium core and the bismuth coating for absorbing neutrons. The composition is preferably in the form of a container for storing materials that emit radiation such as gamma rays and neutrons. The container is preferably formed by casting bismuth around a pre-formed uranium container having a gadolinium sheeting, and allowing the bismuth to cool. The resulting container is a structurally sound, corrosion-resistant, radiation-absorbing container. 2 figs.

Kronberg, J.W.

1994-08-02T23:59:59.000Z

487

Multiscale Modeling and Homogenization of Composite Materials  

E-Print Network [OSTI]

Schematics of fiber composite . . . . . . . . . .of long fiber sic/ti composite materials. Comput. Methodsof Fibre-reinforced composites. Wiley, 4th edition, 2002. [

Mseis, George

2010-01-01T23:59:59.000Z

488

Composite bone substitutes prepared by two methods  

E-Print Network [OSTI]

Hydroxyapatite-polyethylene composites: effect of graftingof braded carbon/PEEK composite compression bone plates,”Koch, “Hydroxyapatite/SiO2 Composites via Freeze Casting for

Lee, Hoe Yun; Lee, Hoe Yun

2012-01-01T23:59:59.000Z

489

Composite Beings in Neo-Babylonian Art  

E-Print Network [OSTI]

Ninurta and the Turtle: Composite Text. ” The ElectronicAND POSTURE OF NEO-BABYLONIAN COMPOSITE BEINGS KEY TO BODYgenius grapples with other composite beings on either side.

Gane, Constance E.

2012-01-01T23:59:59.000Z

490

Composite materials with integrated embedded sensing networks  

E-Print Network [OSTI]

Interlaminar Response of Composite Materials , ed. N. J.in fibre-reinforced composite structures with embedded fibreDutton, and D. Kelly. 2004. Composite Materials for Aircraft

Schaaf, Kristin Leigh

2008-01-01T23:59:59.000Z

491

Thin film composite electrolyte  

DOE Patents [OSTI]

The invention is a thin film composite solid (and a means for making such) suitable for use as an electrolyte, having a first layer of a dense, non-porous conductive material; a second layer of a porous ionic conductive material; and a third layer of a dense non-porous conductive material, wherein the second layer has a Coefficient of thermal expansion within 5% of the coefficient of thermal expansion of the first and third layers.

Schucker, Robert C. (The Woodlands, TX)

2007-08-14T23:59:59.000Z

492

Desensitization of metastable intermolecular composites  

DOE Patents [OSTI]

A method to substantially desensitize a metastable intermolecular composite material to electrostatic discharge and friction comprising mixing the composite material with an organic diluent and removing enough organic diluent from the mixture to form a mixture with a substantially putty-like consistency, as well as a concomitant method of recovering the metastable intermolecular composite material.

Busse, James R. (South Fork, CO); Dye, Robert C. (Los Alamos, NM); Foley, Timothy J. (Los Alamos, NM); Higa, Kelvin T. (Ridgecrest, CA); Jorgensen, Betty S. (Jemez Springs, NM); Sanders, Victor E. (White Rock, NM); Son, Steven F. (Los Alamos, NM)

2011-04-26T23:59:59.000Z

493

Refined Spectral Method as an extremely accurate technique for solving 2D time-independent Schrodinger equation  

E-Print Network [OSTI]

We present a refinement of the Spectral Method by incorporating an optimization method into it and generalize it to two space dimensions. We then apply this Refined Spectral Method as an extremely accurate technique for finding the bound states of the two dimensional time-independent Schrodinger equation. We first illustrate the use of this method on an exactly solvable case and then use it on a case which is not so. This method is very simple to program, fast, extremely accurate (e.g. a relative error of 10^(-15) is easily obtainable in two dimensions), very robust and stable. Most importantly, one can obtain the energies and the wave functions of as many of the bound states as desired with a single run of the algorithm.

P. Pedram; M. Mirzaei; S. S. Gousheh

2006-11-23T23:59:59.000Z

494

Projections of the impact of expansion of domestic heavy oil production on the U.S. refining industry from 1990 to 2010. Topical report  

SciTech Connect (OSTI)

This report is one of a series of publications assessing the feasibility of increasing domestic heavy oil (10{degrees} to 20{degrees} API gravity) production. This report provides a compendium of the United States refining industry and analyzes the industry by Petroleum Administration for Defense District (PADD) and by ten smaller refining areas. The refining capacity, oil source and oil quality are analyzed, and projections are made for the U.S. refining industry for the years 1990 to 2010. The study used publicly available data as background. A linear program model of the U.S. refining industry was constructed and validated using 1990 U.S. refinery performance. Projections of domestic oil production (decline) and import of crude oil (increases) were balanced to meet anticipated demand to establish a base case for years 1990 through 2010. The impact of additional domestic heavy oil production, (300 MB/D to 900 MB/D, originating in select areas of the U.S.) on the U.S. refining complex was evaluated. This heavy oil could reduce the import rate and the balance of payments by displacing some imported, principally Mid-east, medium crude. The construction cost for refining units to accommodate this additional domestic heavy oil production in both the low and high volume scenarios is about 7 billion dollars for bottoms conversion capacity (delayed coking) with about 50% of the cost attributed to compliance with the Clean Air Act Amendment of 1990.

Olsen, D.K.; Ramzel, E.B.; Strycker, A.R. [National Institute for Petroleum and Energy Research, Bartlesville, OK (United States). ITT Research Institute] [National Institute for Petroleum and Energy Research, Bartlesville, OK (United States). ITT Research Institute; Guariguata, G.; Salmen, F.G. [Bonner and Moore Management Science, Houston, TX (United States)] [Bonner and Moore Management Science, Houston, TX (United States)

1994-12-01T23:59:59.000Z

495

Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making  

DOE Patents [OSTI]

A method of making a permanent magnet wherein 1) a melt is formed having a base alloy composition comprising RE, Fe and/or Co, and B (where RE is one or more rare earth elements) and 2) TR (where TR is a transition metal selected from at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and Al) and at least one of C and N are provided in the base alloy composition melt in substantially stoichiometric amounts to form a thermodynamically stable compound (e.g. TR carbide, nitride or carbonitride). The melt is rapidly solidified in a manner to form particulates having a substantially amorphous (metallic glass) structure and a dispersion of primary TRC, TRN and/or TRC/N precipitates. The amorphous particulates are heated above the crystallization temperature of the base alloy composition to nucleate and grow a hard magnetic phase to an optimum grain size and to form secondary TRC, TRN and/or TRC/N precipitates dispersed at grain boundaries. The crystallized particulates are consolidated at an elevated temperature to form a shape. During elevated temperature consolidation, the primary and secondary precipitates act to pin the grain boundaries and minimize deleterious grain growth that is harmful to magnetic properties.

McCallum, R. William (Ames, IA); Branagan, Daniel J. (Ames, IA)

1996-01-23T23:59:59.000Z

496

Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making  

DOE Patents [OSTI]

A method of making a permanent magnet is disclosed wherein (1) a melt is formed having a base alloy composition comprising RE, Fe and/or Co, and B (where RE is one or more rare earth elements) and (2) TR (where TR is a transition metal selected from at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and Al) and at least one of C and N are provided in the base alloy composition melt in substantially stoichiometric amounts to form a thermodynamically stable compound (e.g. TR carbide, nitride or carbonitride). The melt is rapidly solidified in a manner to form particulates having a substantially amorphous (metallic glass) structure and a dispersion of primary TRC, TRN and/or TRC/N precipitates. The amorphous particulates are heated above the crystallization temperature of the base alloy composition to nucleate and grow a hard magnetic phase to an optimum grain size and to form secondary TRC, TRN and/or TRC/N precipitates dispersed at grain boundaries. The crystallized particulates are consolidated at an elevated temperature to form a shape. During elevated temperature consolidation, the primary and secondary precipitates act to pin the grain boundaries and minimize deleterious grain growth that is harmful to magnetic properties. 33 figs.

McCallum, R.W.; Branagan, D.J.

1996-01-23T23:59:59.000Z

497

A field study evaluation of short-term refined Gaussian dispersion models  

SciTech Connect (OSTI)

A tracer study was conducted at the Duke Forest Site in Chapel Hill, North Carolina in January, 1995 to evaluate the ability of three short-term refined Gaussian dispersion models to predict the fate of volume source emissions under field study conditions. Study participants included the American Petroleum Institute (API), the US Environmental Protection Agency (EPA), the US Department of Energy (DOE), the University of North Carolina at Chapel Hill (UNC), and private consulting firms. The models evaluated were Industrial Source Complex--Short Term versions 2 and 3 (ISC2, ISC3) and the American Meteorological Society (AMS) Environmental Protection Agency (EPA) Regulatory Model Improvement Committee (AERMIC) model, AERMOD. All three models are based on the steady-state Gaussian plume dispersion equation, which predicts concentrations at downwind receptor locations when integrated over the distance between the source and receptor. Chemicals were released at known rates and measurements were taken at various points in the study field using Tedlar bag point sampling and open-path Fourier Transform infrared (OP-FTIR) monitoring. The study found that ISC and AERMOD underpredicted the measured concentrations for each dataset collected in the field study. ISC and AERMOD each underpredicted the OPFTIR dataset by a factor of approximately 1.6. ISC underpredicted the Tedlar{reg_sign} dataset by approximately 2.1, while AERMOD underpredicted by a factor of approximately 2.6. Regardless of source configuration or measurement technique used, under-prediction with respect to the measured concentration was consistently observed. This indicates that safety factors or other corrections may be necessary in predicting contaminant concentrations over the distances examined in this study, i.e., in the near field of less than 200 meters.

Piper, A.

1996-12-31T23:59:59.000Z

498

,"U.S. Sales for Resale Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2.Reformulated, Average Refiner Gasoline Prices"

499

,"U.S. Sales to End Users Refiner Residual Fuel Oil and No. 4 Fuel Sales Volumes"  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperativeA2.Reformulated, Average Refiner Gasoline Prices"Sales

500

Creep damage mechanisms in composites  

SciTech Connect (OSTI)

During the past year, research has focused on processing and characterization of intermetallic composites synthesized by plasma spray deposition. This versatile process allows rapid synthesis of a variety of different composite systems with potential applications for coatings, functionally gradient materials, rapid proto-typing and 3d printing, as well as near-net-shape processing of complex shapes. We have been pursuing an experimental program of research aimed at a fundamental understanding of the microstructural processes involved in the synthesis of intermetallic composites, including diffusion, heat transfer, grain boundary migration, and the dependence of these phenomena on deposition parameters. The work has been motivated by issues arising from composite materials manufacturing technologies. Recent progress is described in section B on the following topics: (1) Reactive atomization and deposition of intermetallic composites (Ni3Al); (2) Reactive synthesis of MoSi2-SiC composites; (3) Mechanical alloying of nanocrystalline alloys; (4) Tensile creep deformation of BMAS glass-ceramic composites.

Nutt, S.R.

1994-10-17T23:59:59.000Z