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1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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...

10

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...

11

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

12

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

13

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

14

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

15

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...

16

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

17

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

18

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

19

Safety Margin Characterization  

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

Risk-Informed Safety Margin Characterization (RISMC) Pathway Curtis L. Smith RISMC Pathway Lead Idaho National Laboratory Light Water Reactor Sustainability (LWRS) Program Goals...

20

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

22

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

23

Loading margin Stable operating  

E-Print Network [OSTI]

Linear approximation at p1 Actual loading margin Loadingmargin Parameter p p1 p2 p3 IEEE Transactions collapse. Linear and quadratic estimates to the variation of the loading margin with respect to any sys power support, wheeling, load model param- eters, line susceptance, and generator dispatch. The accuracy

24

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

25

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.

26

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

27

contingency Nominal loading margin  

E-Print Network [OSTI]

is estimated. First a nose curve is computed by continuation to obtain a nominal loading margin. Then linear and the very fast computation of the linear estimates. Keywords: Power system security, contingency analy- sis formulas derived in [4]. The computations are summarized: 1 A pattern of load increase, generator dispatch

28

167 Prospectus California Margin  

E-Print Network [OSTI]

. Each of the three transects across the California Current will compare deep-water sites near the core), for those sites that require it, can be obtained from the following World Wide Web site: http margin, Deep Sea Drilling Project (DSDP) Leg 63, occurred immediately before the first deployment

29

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

30

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

31

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

32

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...

33

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

34

Margins up; consumption down  

SciTech Connect (OSTI)

The results of a survey of dealers in the domestic fuel oil industry are reported. Wholesale prices, reacting to oversupply, decreased as did retail prices; retail prices decreased at a slower rate so profit margins were larger. This trend produced competitive markets as price-cutting became the method for increasing a dealer's share of the profits. Losses to other fuels decreased, when the figures were compared to earlier y; and cash flow was very good for most dealers. In summary, profits per gallon of oil delivered increased, while the consumption of gasoline per customer decreased. 22 tables.

Mantho, M.

1983-09-01T23:59:59.000Z

35

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

36

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

37

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

38

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

39

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

40

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

42

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

43

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

44

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

45

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.

46

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

47

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

48

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

49

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

50

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.

51

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

52

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...

53

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...

54

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

55

Maximal rank of extremal marginal tracial states  

E-Print Network [OSTI]

States on coupled quantum system whose restrictions to each subsystems are normalized traces are called marginal tracial states. We investigate extremal marginal tracial states and maximal rank of such states. Diagonal marginal tracial states are also considered.

Hiromichi Ohno

2009-11-18T23:59:59.000Z

56

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

57

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.

58

Kinematic Self-Similarity  

E-Print Network [OSTI]

Self-similarity in general relativity is briefly reviewed and the differences between self-similarity of the first kind and generalized self-similarity are discussed. The covariant notion of a kinematic self-similarity in the context of relativistic fluid mechanics is defined. Various mathematical and physical properties of spacetimes admitting a kinematic self-similarity are discussed. The governing equations for perfect fluid cosmological models are introduced and a set of integrability conditions for the existence of a proper kinematic self-similarity in these models is derived. Exact solutions of the irrotational perfect fluid Einstein field equations admitting a kinematic self-similarity are then sought in a number of special cases, and it is found that; (1) in the geodesic case the 3-spaces orthogonal to the fluid velocity vector are necessarily Ricci-flat and (ii) in the further specialisation to dust the differential equation governing the expansion can be completely integrated and the asymptotic properties of these solutions can be determined, (iii) the solutions in the case of zero-expansion consist of a class of shear-free and static models and a class of stiff perfect fluid (and non-static) models, and (iv) solutions in which the kinematic self-similar vector is parallel to the fluid velocity vector are necessarily Friedmann-Robertson-Walker (FRW) models.

A. A. Coley

1996-10-25T23:59:59.000Z

59

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

60

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

62

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

63

Religious Similarity Among Siblings  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE Approved by: Co-Chairs of Committee, Jeff Ackerman William McIntosh Committee Member, Sarah Gatson Head of Department, Mark Fossett May 2011 Major Subject: Sociology iii ABSTRACT Religious... Similarity Among Siblings. (May 2011) Layton Marshall Field, B.S., Texas A&M University Co-Chairs of Advisory Committee; Dr. Jeff Ackerman Dr. William McIntosh For many individuals, religious development begins in the family. Previous...

Field, Layton

2012-07-11T23:59:59.000Z

64

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

65

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

66

Landscape Evolution at an Active Plate Margin  

E-Print Network [OSTI]

Landscape Evolution at an Active Plate Margin edited and compiled by David R. Jessey and Robert E;32009 Desert Symposium Table of contents Landscape evolution at an active plate margin: a field trip

de Lijser, Peter

67

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

68

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

69

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

70

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...

71

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...

72

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...

73

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...

74

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....

75

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

76

South Atlantic margins of Africa. page 1 South Atlantic continental margins of Africa  

E-Print Network [OSTI]

South Atlantic margins of Africa. page 1 South Atlantic continental margins of Africa: a comparison The South Atlantic continental passive margins of Africa comprise the major depocentres on the African plate of the tectonic vs climate interplay on the evolution of equatorial west Africa and SW Africa margins Michel

Paris-Sud XI, Université de

77

Marginal Lands: Concept, Assessment and Management  

SciTech Connect (OSTI)

Marginal lands have received wide attention for their potential to improve food security and support bioenergy production. However, environmental, ecosystem service, and sustainability concerns have been widely raised over the use of marginal land. Knowledge of the extent, location, and quality of marginal lands as well as their assessment and management are limited and diverse. This paper provides a review of the historical development of marginal concept, its application and assessment. Limitations and priority research needs of marginal land assessment and management were discussed.

Kang, Shujiang [ORNL; Post, Wilfred M [ORNL; West, Tristram O. [Joint Global Change Research Institute, PNNL; Bandaru, Vara Prasad [ORNL; Izaurralde, Dr. R. Cesar [Pacific Northwest National Laboratory (PNNL); Wang, Dali [ORNL; Nichols, Dr Jeff A [ORNL

2013-01-01T23:59:59.000Z

78

Another view of the Marginality Hypothesis: presidential influence in Congress  

E-Print Network [OSTI]

, the implementation of a control variable (the legislator's level of electoral insecurity ? his marginality) in the analysis failed to reveal overall support i' or the Harginality Hypoth- esis. An interesting finding of this thesis is that the strongest sup- port...'indings which tend. to disprove the normative ideals of "delegate" representation d. id not go unchallenged, however. In a somewhat similar study of the California electorate and legisla- ture following the 1968, 1970, and 1972 general elections, Kuklin- ski...

Richard, Carl Mark

1980-01-01T23:59:59.000Z

79

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.

80

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

82

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

83

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

84

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

85

Marginal vitiligo: an unusual depigmenting disorder  

E-Print Network [OSTI]

including marginal vitiligo, DLE, and hypopigmented MF.Direct immunofluorescence DLE: Discoid lupus erythematosusdiagnosis of IVRB includes DLE. In fact, the patches of

Trikha, Ritika; McCowan, Nancye; Brodell, Robert

2015-01-01T23:59:59.000Z

86

Assessment of seismic margin calculation methods  

SciTech Connect (OSTI)

Seismic margin review of nuclear power plants requires that the High Confidence of Low Probability of Failure (HCLPF) capacity be calculated for certain components. The candidate methods for calculating the HCLPF capacity as recommended by the Expert Panel on Quantification of Seismic Margins are the Conservative Deterministic Failure Margin (CDFM) method and the Fragility Analysis (FA) method. The present study evaluated these two methods using some representative components in order to provide further guidance in conducting seismic margin reviews. It is concluded that either of the two methods could be used for calculating HCLPF capacities. 21 refs., 9 figs., 6 tabs.

Kennedy, R.P.; Murray, R.C.; Ravindra, M.K.; Reed, J.W.; Stevenson, J.D.

1989-03-01T23:59:59.000Z

87

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

88

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

89

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

90

Analysis of gain margins and phase margins of a nonlinear reactor control system  

SciTech Connect (OSTI)

By using the gain-phase margin tester, the parameter-plane method for the nonlinear control system is extended to frequency-domain related to gain margin and phase margin. The stability and self-excited oscillation are investigated with respect to the adjustable parameters. The useful information concerning the effect of adjustable parameters can be obtained, after the describing function curves and the boundaries of constant gain margin and constant phase margin are plotted in the parameter plane. Some interesting consequences are offered by employing the practical control system of a material testing reactor.

Chang, C.H.; Chang, M.K. (Chung Cheng Inst. of Technology, Tao-Yuan (Taiwan, Province of China))

1994-08-01T23:59:59.000Z

91

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

92

Gain margin and phase margin analysis of a nuclear reactor control system with multiple transport lags  

SciTech Connect (OSTI)

In this paper a method for finding the boundaries of constant gain margin and phase margin of control systems with transport lags and adjustable parameters is presented. The considered systems are first modified by adding a gain-phase margin tester, then the characteristic equations are formulated, and finally the stability equations are used to find the boundaries of constant gain margin and phase margin. The main advantage of the proposed method is to obtain complete information about the effects of adjustable parameters on gain margin and phase margin and their corresponding crossover frequencies. In order to show the usefulness of the proposed method a nuclear reactor control system with multiple transport lags is chosen as one of the examples.

Chang, C.H. (Institute of Electronics, National Chiao-Tung Univ. (TW)); Han, K.W. (Chung-Shan Institute and National Chiao-Tung Univ., Hsinchu (TW))

1989-08-01T23:59:59.000Z

93

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

94

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

95

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

96

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

97

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

98

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

99

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

100

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

102

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

103

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

104

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

105

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.

106

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

107

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

108

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

109

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

110

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

111

On the quantification of safety margins  

E-Print Network [OSTI]

The nuclear industry has relied on the concept of Defense in Depth (DID) and traditional safety margins to deal with the uncertainties associated with the design and operation of nuclear facilities. These concepts were ...

Pagani, Lorenzo P

2004-01-01T23:59:59.000Z

112

Marginal, Erodible Land Retirement Policy (Minnesota)  

Broader source: Energy.gov [DOE]

It is state policy to encourage the retirement of marginal, highly erodible land, particularly land adjacent to public waters and drainage systems, from crop production and to reestablish a cover...

113

Wholesale marginal prices in competitive generation markets  

SciTech Connect (OSTI)

Wholesale marginal electricity prices are being used in several actual competitive generation markets worldwide, both to remunerate generators and to charge consumption. These prices must account not only for energy, but also for guarantee of supply in the long and the short term. This paper: (a) provides a sound conceptual and quantitative foundation for wholesale pricing based on generation services, where any existing restrictions in operation or planning in real power markets are accounted for, (b) clearly establishes the relationship between short term marginal costs, long term marginal costs and optimal wholesale electricity prices, and (c) identifies the reasons for mismatches in cost recovery with marginal generation prices. The theoretical results are verified with a detailed realistic power system model.

Perez-Arriaga, I.J. [National Electric Regulatory Commission, Madrid (Spain)] [National Electric Regulatory Commission, Madrid (Spain); Meseguer, C. [Univ. Pontificia Comillas, Madrid (Spain). Inst. de Investigacion Tecnologica] [Univ. Pontificia Comillas, Madrid (Spain). Inst. de Investigacion Tecnologica

1997-05-01T23:59:59.000Z

114

Sandia National Laboratories: NASA Award for Marginal Ice Zone...  

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

ClimateECClimateAnalysisNASA Award for Marginal Ice Zone Observations and Process Experiment (MIZOPEX) NASA Award for Marginal Ice Zone Observations and Process Experiment...

115

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

116

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

117

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:

118

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

119

Non-marginally bound inhomogeneous dust collapse in higher dimensional space-time  

E-Print Network [OSTI]

We investigate the occurrence and nature of a naked singularity in the gravitational collapse of an inhomogeneous dust cloud described by a self-similar higher dimensional Tolman-Bondi space-time. Bound, marginally bound and unbound space-times are analyzed. The degree of inhomogeneity of the collapsing matter necessary to form a naked singularity is given.

S. G. Ghosh; A. Banerjee

2002-12-16T23:59:59.000Z

120

Risk Informed Margins Management as part of Risk Informed Safety Margin Characterization  

SciTech Connect (OSTI)

The ability to better characterize and quantify safety margin is important to improved decision making about Light Water Reactor (LWR) design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margin management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. In addition, as research and development in the LWR Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. To support decision making related to economics, readability, and safety, the Risk Informed Safety Margin Characterization (RISMC) Pathway provides methods and tools that enable mitigation options known as risk informed margins management (RIMM) strategies.

Curtis Smith

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "refining margins similarly" 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

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

122

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

123

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

124

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

125

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...

126

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...

127

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...

128

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...

129

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...

130

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...

131

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...

132

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...

133

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...

134

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...

135

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...

136

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...

137

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,...

138

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,...

139

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

140

Self-Similar Abe Karplus  

E-Print Network [OSTI]

-----------------------------------------------------------------What is Fractal Dimension?! 22 Concept Derivation How does the Fractal Dimension of Sierpinski Objects, meaning that they call themselves. It is much like self-similarity; in fact, one way of creating self at the same time. So, in order to get around the problem, I had to create several copies of the script, one

Karplus, Kevin

Note: This page contains sample records for the topic "refining margins similarly" 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

RISK-INFORMED SAFETY MARGIN CHARACTERIZATION  

SciTech Connect (OSTI)

The concept of safety margins has served as a fundamental principle in the design and operation of commercial nuclear power plants (NPPs). Defined as the minimum distance between a system’s “loading” and its “capacity”, plant design and operation is predicated on ensuring an adequate safety margin for safety-significant parameters (e.g., fuel cladding temperature, containment pressure, etc.) is provided over the spectrum of anticipated plant operating, transient and accident conditions. To meet the anticipated challenges associated with extending the operational lifetimes of the current fleet of operating NPPs, the United States Department of Energy (USDOE), the Idaho National Laboratory (INL) and the Electric Power Research Institute (EPRI) have developed a collaboration to conduct coordinated research to identify and address the technological challenges and opportunities that likely would affect the safe and economic operation of the existing NPP fleet over the postulated long-term time horizons. In this paper we describe a framework for developing and implementing a Risk-Informed Safety Margin Characterization (RISMC) approach to evaluate and manage changes in plant safety margins over long time horizons.

Nam Dinh; Ronaldo Szilard

2009-07-01T23:59:59.000Z

142

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

143

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

144

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.

145

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

146

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

147

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

148

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

149

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

150

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

151

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

152

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.

153

Geophysical study of the East African margin  

E-Print Network [OSTI]

's passive rifted continental margins (Talwani and Eldholm, 1972, 1973; Luyendyk and Bunce, 1973; Rabinowitz, 1974, 1977; Konig and Talwani, 1977). These include: 1) a free-air gravity high over continental shelf break and low over continental slope...Brecque (1977) and Veevers (1977) who propose that thick oceanic crust forms during the initial rifting stage of continental separation. Rabinowitz and LaBrecque (1977) further suggest this zone of thickened crust to be approximately 150 km wide. Numerous...

Matthias, Paul Kulman

2012-06-07T23:59:59.000Z

154

Shear measurements across the northern margin of Whillans Ice Stream  

E-Print Network [OSTI]

Field measurements of surface deformation across the northern shear margin of Whillans Ice Stream, West Antarctica, were analyzed to better understand the processes controlling the position and migration of this margin. Four lines of poles extending...

Van Der Veen, C.J.; Jezek, K.; Stearns, Leigh

2007-01-01T23:59:59.000Z

155

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

156

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

157

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

158

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

159

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

160

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

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


161

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...

162

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...

163

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...

164

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

165

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,...

166

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,...

167

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

168

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

169

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

170

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

171

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

172

Marginal Energy Prices - RECS97 Update  

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 EnergyDevelopment Accident Tolerant Fuel: FeCrAl Claddingand AprilMarginal

173

Sandia National Laboratories: marginal sea ice zone  

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 the1developmentturbine bladelifetime is the cumulative time under loadmarginal sea

174

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

175

Refiners Switch to RFG Complex Model  

Reports and Publications (EIA)

On January 1, 1998, domestic and foreign refineries and importers must stop using the "simple" model and begin using the "complex" model to calculate emissions of volatile organic compounds (VOC), toxic air pollutants (TAP), and nitrogen oxides (NOx) from motor gasoline. The primary differences between application of the two models is that some refineries may have to meet stricter standards for the sulfur and olefin content of the reformulated gasoline (RFG) they produce and all refineries will now be held accountable for NOx emissions. Requirements for calculating emissions from conventional gasoline under the anti-dumping rule similarly change for exhaust TAP and NOx. However, the change to the complex model is not expected to result in an increase in the price premium for RFG or constrain supplies.

1998-01-01T23:59:59.000Z

176

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

177

MARGINAL EXPENSE OIL WELL WIRELESS SURVEILLANCE MEOWS  

SciTech Connect (OSTI)

A marginal expense oil well wireless surveillance system to monitor system performance and production from rod-pumped wells in real time from wells operated by Vaquero Energy in the Edison Field, Main Area of Kern County in California has been successfully designed and field tested. The surveillance system includes a proprietary flow sensor, a programmable transmitting unit, a base receiver and receiving antenna, and a base station computer equipped with software to interpret the data. First, the system design is presented. Second, field data obtained from three wells is shown. Results of the study show that an effective, cost competitive, real-time wireless surveillance system can be introduced to oil fields across the United States and the world.

Mason M. Medizade; John R. Ridgely; Donald G. Nelson

2004-11-01T23:59:59.000Z

178

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

179

active continental margin: Topics by E-print Network  

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

HMMs, On-line handwrit- ing recognition, Off Do,Trinh-Minh-Tri 336 Derivation of Locational Marginal Prices for Restructured Wholesale Power Markets Energy Storage, Conversion...

180

EOCENE BIRDS FROM THE WESTERN MARGIN OF SOUTHERNMOST SOUTH AMERICA .  

E-Print Network [OSTI]

??This study presents the first record of Eocene birds from the western margin of southernmost South America. Three localities in Magallanes, southern Chile, have yielded… (more)

Sallaberry, Michel

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "refining margins similarly" 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

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

182

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

183

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

184

,"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"

185

Self-Similarity in General Relativity \\endtitle  

E-Print Network [OSTI]

The different kinds of self-similarity in general relativity are discussed, with special emphasis on similarity of the ``first'' kind, corresponding to spacetimes admitting a homothetic vector. We then survey the various classes of self-similar solutions to Einstein's field equations and the different mathematical approaches used in studying them. We focus mainly on spatially homogenous and spherically symmetric self-similar solutions, emphasizing their possible roles as asymptotic states for more general models. Perfect fluid spherically symmetric similarity solutions have recently been completely classified, and we discuss various astrophysical and cosmological applications of such solutions. Finally we consider more general types of self-similar models.

B. J. Carr; A. A. Coley

1998-06-09T23:59:59.000Z

186

Biosequence Similarity Search on the Mercury System  

E-Print Network [OSTI]

Biosequence Similarity Search on the Mercury System Praveen Krishnamurthy, Jeremy Buhler, Roger Chamberlain, Mark Franklin, Kwame Gyang, and Joseph Lancaster, "Biosequence Similarity Search on the Mercury on the Mercury System Praveen Krishnamurthy, Jeremy Buhler, Roger Chamberlain, Mark Franklin, Kwame Gyang

Chamberlain, Roger

187

Assessment of Biomass Resources from Marginal Lands in APEC Economies  

SciTech Connect (OSTI)

The goal of this study is to examine the marginal lands in Asia-Pacific Economic Cooperation (APEC) economies and evaluate their biomass productivity potential. Twelve categories of marginal lands are identified using the Global Agro-Ecological Zones system of the United Nations Food and Agriculture Organization.

Milbrandt, A.; Overend, R. P.

2009-08-01T23:59:59.000Z

188

Derivation of Locational Marginal Prices for Restructured Wholesale Power Markets  

E-Print Network [OSTI]

Derivation of Locational Marginal Prices for Restructured Wholesale Power Markets Haifeng Liu restructured wholesale power markets, the detailed derivation of LMPs as actually used in industry practice Operator (MISO). Keywords: Locational marginal pricing, wholesale power market, AC optimal power flow, DC

Tesfatsion, Leigh

189

Seismic margins and calibration of piping systems  

SciTech Connect (OSTI)

The Seismic Safety Margins Research Program (SSMRP) is a US Nuclear Regulatory Commission-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its objective is to develop a complete, fully coupled analysis procedure for estimating the risk of earthquake-induced radioactive release from a commercial nuclear power plant and to determine major contributors to the state-of-the-art seismic and systems analysis process and explicitly includes the uncertainties in such a process. The results will be used to improve seismic licensing requirements for nuclear power plants. In Phase I of SSMRP, the overall seismic risk assessment methodology was developed and assembled. The application of this methodology to the seismic PRA (Probabilistic Risk Assessment) at the Zion Nuclear Power Plant has been documented. This report documents the method deriving response factors. The response factors, which relate design calculated responses to best estimate values, were used in the seismic response determination of piping systems for a simplified seismic probablistic risk assessment. 13 references, 31 figures, 25 tables.

Shieh, L.C.; Tsai, N.C.; Yang, M.S.; Wong, W.L.

1985-01-01T23:59:59.000Z

190

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

191

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

192

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

193

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

194

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

195

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

196

#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

197

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

198

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

199

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

200

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....

Note: This page contains sample records for the topic "refining margins similarly" 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

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....

202

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....

203

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...

204

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...

205

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

206

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

207

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.

208

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

209

From similarity to inference Matthew Weber  

E-Print Network [OSTI]

From similarity to inference Matthew Weber Princeton University Daniel Osherson Princeton anonymous referees for constructive commentary. Weber ac- knowledges support from an NSF graduate research

Osherson, Daniel

210

Self-Similar Modes of Coherent Diffusion  

E-Print Network [OSTI]

Self-similar solutions of the coherent diffusion equation are derived and measured. The set of real similarity solutions is generalized by the introduction of a nonuniform phase surface, based on the elegant Gaussian modes of optical diffraction. In an experiment of light storage in a gas of diffusing atoms, a complex initial condition is imprinted, and its diffusion dynamics is monitored. The self-similarity of both the amplitude and the phase pattern is demonstrated, and an algebraic decay associated with the mode order is measured. Notably, as opposed to a regular diffusion spreading, a self-similar contraction of a special subset of the solutions is predicted and observed.

O. Firstenberg; P. London; D. Yankelev; R. Pugatch; M. Shuker; N. Davidson

2010-08-16T23:59:59.000Z

211

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

212

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.

213

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

214

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

215

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

216

Non-Hermitian Hamiltonians and similarity transformations  

E-Print Network [OSTI]

We show that a straightforward similarity transformation between an Hermitian operator and a non-Hermitian one enables one to prove the results obtained by other authors by means of a gauge-like transformation. The similarity transformation also reveals the connection with pseudo-Hermiticity

Francisco M. Fernández

2015-02-04T23:59:59.000Z

217

National Geo-Database for Biofuel Simulations and Regional Analysis of Biorefinery Siting Based on Cellulosic Feedstock Grown on Marginal Lands  

SciTech Connect (OSTI)

The goal of this project undertaken by GLBRC (Great Lakes Bioenergy Research Center) Area 4 (Sustainability) modelers is to develop a national capability to model feedstock supply, ethanol production, and biogeochemical impacts of cellulosic biofuels. The results of this project contribute to sustainability goals of the GLBRC; i.e. to contribute to developing a sustainable bioenergy economy: one that is profitable to farmers and refiners, acceptable to society, and environmentally sound. A sustainable bioenergy economy will also contribute, in a fundamental way, to meeting national objectives on energy security and climate mitigation. The specific objectives of this study are to: (1) develop a spatially explicit national geodatabase for conducting biofuel simulation studies and (4) locate possible sites for the establishment of cellulosic ethanol biorefineries. To address the first objective, we developed SENGBEM (Spatially Explicit National Geodatabase for Biofuel and Environmental Modeling), a 60-m resolution geodatabase of the conterminous USA containing data on: (1) climate, (2) soils, (3) topography, (4) hydrography, (5) land cover/ land use (LCLU), and (6) ancillary data (e.g., road networks, federal and state lands, national and state parks, etc.). A unique feature of SENGBEM is its 2008-2010 crop rotation data, a crucially important component for simulating productivity and biogeochemical cycles as well as land-use changes associated with biofuel cropping. ARRA support for this project and to the PNNL Joint Global Change Research Institute enabled us to create an advanced computing infrastructure to execute millions of simulations, conduct post-processing calculations, store input and output data, and visualize results. These computing resources included two components installed at the Research Data Center of the University of Maryland. The first resource was 'deltac': an 8-core Linux server, dedicated to county-level and state-level simulations and PostgreSQL database hosting. The second resource was the DOE-JGCRI 'Evergreen' cluster, capable of executing millions of simulations in relatively short periods. ARRA funding also supported a PhD student from UMD who worked on creating the geodatabases and executing some of the simulations in this study. Using a physically based classification of marginal lands, we simulated production of cellulosic feedstocks from perennial mixtures grown on these lands in the US Midwest. Marginal lands in the western states of the US Midwest appear to have significant potential to supply feedstocks to a cellulosic biofuel industry. Similar results were obtained with simulations of N-fertilized perennial mixtures. A detailed spatial analysis allowed for the identification of possible locations for the establishment of 34 cellulosic ethanol biorefineries with an annual production capacity of 5.6 billion gallons. In summary, we have reported on the development of a spatially explicit national geodatabase to conduct biofuel simulation studies and provided simulation results on the potential of perennial cropping systems to serve as feedstocks for the production of cellulosic ethanol. To accomplish this, we have employed sophisticated spatial analysis methods in combination with the process-based biogeochemical model EPIC. The results of this study will be submitted to the USDOE Bioenergy Knowledge Discovery Framework as a way to contribute to the development of a sustainable bioenergy industry. This work provided the opportunity to test the hypothesis that marginal lands can serve as sources of cellulosic feedstocks and thus contribute to avoid potential conflicts between bioenergy and food production systems. This work, we believe, opens the door for further analysis on the characteristics of cellulosic feedstocks as major contributors to the development of a sustainable bioenergy economy.

Izaurralde, Roberto C.; Zhang, Xuesong; Sahajpal, Ritvik; Manowitz, David H.

2012-04-01T23:59:59.000Z

218

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

219

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

220

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

222

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

223

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

224

Global-local Structural Optimization Using Response Surfaces of Local Optimization Margins  

E-Print Network [OSTI]

1 Global-local Structural Optimization Using Response Surfaces of Local Optimization Margins Boyang optimization problems. First, a large number of component optimizations for maximization of margins are performed. Response surface approximations (RSA) for maximum margins of component optimization

Neumaier, Arnold

225

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

226

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

227

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

228

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

229

asian marginal seas: Topics by E-print Network  

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

which somewhat surprisingly turned out to be classically stable. This was called marginal stability, as moving along one of its zero-modes, two of the stable modes turn...

230

asian monsoonal margin: Topics by E-print Network  

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

model (MRCM) in simulating the West African monsoon. The MRCM is built on the Regional Climate Model, ... Im, Eun-Soon 242 From Marginal Deformations to Confinement HEP - Theory...

231

Geotechnical characterization of sediments from Hydrate Ridge, Cascadia Continental Margin  

E-Print Network [OSTI]

Eight whole core sediment samples were obtained from ODP Site 1244, Hydrate Ridge, Cascadia Continental Margin with the goal of understanding the stress history, consolidation behavior and strength characteristics of the ...

Tan, Brian B. (Brian Bautista), 1979-

2004-01-01T23:59:59.000Z

232

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

233

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

234

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

235

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

236

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

237

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.

238

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

239

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

240

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

242

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

243

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

244

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

245

E-Print Network 3.0 - adjacent continental margin Sample Search...  

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

adjacent to the margin. The lack of these features is also characteristic of modern transform margins... -early Paleozoic southern Lau- rentian continental ... Source: Huerta,...

246

Marginal Abatement Costs and Marginal Welfare Costs for Greenhouse Gas Emissions Reductions: Results from the EPPA Model  

E-Print Network [OSTI]

Marginal abatement cost (MAC) curves, relationships between tons of emissions abated and the CO2 (or GHG) price, have been widely used as pedagogic devices to illustrate simple economic concepts such as the benefits of ...

Morris, Jennifer

247

Marital satisfaction and occupational interest similarity  

E-Print Network [OSTI]

multiple variables of personality, background, and similarity of self perception in 20 couples. In relation to cultural factors, Burgess and Cottrell (1938) found that similarity of family background was important in marital adjustment. Many researchers.... ). 1979 "A users guide to SAS (1979 Ed. ). Raleigh, North Carolina: SAS Institute, Inc. Hicks, M. W. , and M. Platt. 1970 "Marital happiness and stability: A review of the research in the sixties. " Journal of Marriage and the Family 32 (November): 553...

Rouse, Lawrence W

1980-01-01T23:59:59.000Z

248

IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 29, NO. 1, JANUARY 2014 203 Distribution Locational Marginal Pricing for Optimal  

E-Print Network [OSTI]

(DSO) determines distribution locational marginal prices (DLMPs) by solving the social welfare, distribution locational marginal prices (DLMPs), distribution locational marginal pricing (DLMP), distribution at node . System locational marginal price (LMP) at time period for the node feeding the distribution grid

Oren, Shmuel S.

249

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

250

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

251

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

252

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

253

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

254

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

255

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

256

Alternative approaches for workflow similarity Andreas Wombacher  

E-Print Network [OSTI]

measure calculations. Keywords-workflow, service discovery, similarity I. INTRODUCTION A service oriented architecture is based on services main- tained by independent service providers and invoked by service of Twente Enschede, The Netherlands lic@ewi.utwente.nl Abstract--Service discovery of state dependent

Twente, Universiteit

257

Self-similar measures Christoph Bandt  

E-Print Network [OSTI]

gasket S (#12;gure 1) was used as a universal toy model for catalysts and other porous materials concrete examples in this class. There is a real discrepancy between the well-developed "harmonic analysis on self- similar fractals" and the small number of concrete spaces for which this theory works. Here we

Bandt, Christoph

258

Self-similar measures Christoph Bandt  

E-Print Network [OSTI]

S (figure 1) was used as a universal toy model for catalysts and other porous materials. A Laplacian concrete examples in this class. There is a real discrepancy between the well-developed "harmonic analysis on self- similar fractals" and the small number of concrete spaces for which this theory works. Here we

Bandt, Christoph

259

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

260

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

262

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

263

Quench margin measurement in Nb3Sn quadrupole magnet  

SciTech Connect (OSTI)

One of the possible practical applications of the Nb{sub 3}Sn accelerator magnets is the LHC luminosity upgrade that involves replacing the present NbTi focusing quadrupoles in two high-luminosity interaction regions (IR). The IR magnets are exposed to strong radiation from the interaction point that requires a detailed investigation of the magnet operating margins under the expected radiation-induced heat depositions. This paper presents the results of simulation and measurement of quench limits and temperature margins for a Nb{sub 3}Sn model magnet using a special midplane strip heater.

Kashikhin, V.V.; Bossert, R.; Chlachidze, G.; Lamm, M.; Novitski, I.; Zlobin, A.V.; /Fermilab

2008-08-01T23:59:59.000Z

264

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

265

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

266

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

267

Building a "Margin of Safety" Into Renewable Energy  

E-Print Network [OSTI]

Building a "Margin of Safety" Into Renewable Energy Procurements: A Review of Experience purchasers and electricity regulators must confront the reality that signed renewable energy contracts will not always yield operational projects on the timeline given in the contracts themselves. Renewable energy

268

RADIO EMISSION FROM INSTABILITIES IN SPACE PLASMAS: MARGINAL STABILITY,  

E-Print Network [OSTI]

I t RADIO EMISSION FROM INSTABILITIES IN SPACE PLASMAS: MARGINAL STABILITY, 4TOCHASTIC GROWTH emission, hich is an indirect emission process first discussed by Ginaburg and Zhe/eznyakoe, 9581, and electron cyclotron maser emission (ECME), which is a direct emission ess first discussed in the presently

Melrose, Don

269

The Marginalized Particle Filter for Automotive Tracking Applications  

E-Print Network [OSTI]

1 The Marginalized Particle Filter for Automotive Tracking Applications Andreas Eidehall Thomas Sch surroundings (lane geometry and the position of other vehicles), which is needed for intelligent automotive in a nonlinear estimation problem. For automotive tracking systems, these problems are traditionally handled

Gustafsson, Fredrik

270

The Marginalized Particle Filter for Automotive Tracking Applications  

E-Print Network [OSTI]

The Marginalized Particle Filter for Automotive Tracking Applications Andreas Eidehall Thomas B surroundings (lane geometry and the position of other vehicles), which is needed for intelligent automotive in a nonlinear estimation problem. For automotive tracking systems, these problems are traditionally handled

Schön, Thomas

271

Mesozoic evolution of northeast African shelf margin, Libya and Egypt  

SciTech Connect (OSTI)

The present tectonic features of the northeast African shelf margin between the Nile delta and the Gulf of Sirte are products of (1) precursory late Paleozoic basement arches, (2) early Mesozoic rifting and plate separation, and (3) Late Cretaceous structural inversion. The 250 km-wide and highly differentiated Mesozoic passive margin in the Western Desert region of Egypt is developed above a broad northwest-trending Late Carboniferous basement arch. In northeastern Libya, in contrast, the passive margin is restricted to just the northernmost Cyrenaica platform, where subsidence was extremely rapid in the Jurassic and Early Cretaceous. The boundary between the Western Desert basin and the Cyrenaica platform is controlled by the western flank of the basement arch. In the middle Cretaceous (100-90 Ma), subsidence accelerated over large areas of the Western desert, further enhancing a pattern of east-west-trending subbasins. This phase of rapid subsidence was abruptly ended about 80 Ma by the onset of structural inversion that uplifted the northern Cyrenaica shelf margin and further differentiated the Western Desert subbasin along a northeasterly trend.

Aadland, R.K.; Schamel, S.

1989-03-01T23:59:59.000Z

272

Distance Metric Learning for Large Margin Nearest Neighbor Classification  

E-Print Network [OSTI]

Distance Metric Learning for Large Margin Nearest Neighbor Classification Kilian Q. Weinberger}@cis.upenn.edu Abstract We show how to learn a Mahanalobis distance metric for k-nearest neigh- bor (kNN) classification in kNN classification--for example, achieving a test error rate of 1.3% on the MNIST handwritten digits

Weinberger, Kilian

273

Sustainable bioenergy production from marginal lands in the US Midwest  

SciTech Connect (OSTI)

Long-term measurements of global warming impact coupled with spatially explicit modeling suggests that both climate benefits and the production potential of cellulosic crops grown on marginal lands of the US North Central region are substantial but will be insufficient to meet long-term biofuel needs.

Gelfand, Ilya; Sahajpal, Ritvik; Zhang, Xuesong; Izaurralde, Roberto C.; Gross, Katherine L.; Robertson, G. P.

2013-01-24T23:59:59.000Z

274

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

275

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

276

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

277

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

278

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

279

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

280

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.

Note: This page contains sample records for the topic "refining margins similarly" 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

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...

282

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

283

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...

284

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...

285

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...

286

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...

287

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...

288

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...

289

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...

290

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...

291

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...

292

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...

293

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...

294

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...

295

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...

296

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...

297

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...

298

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) -...

299

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) -...

300

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

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


301

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

302

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.

303

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.

304

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

305

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

306

Quantification Of Margins And Uncertainties: A Bayesian Approach (full Paper)  

SciTech Connect (OSTI)

Quantification of Margins and Uncertainties (QMU) is 'a formalism for dealing with the reliability of complex technical systems, and the confidence which can be placed in estimates of that reliability.' (Eardleyet al, 2005). In this paper, we show how QMU may be interpreted in the framework of Bayesian statistical inference, using a probabilistic network. The Bayesian approach clarifies the probabilistic underpinnings of the formalism, and shows how the formalism can be used for deciSion-making.

Wallstrom, Timothy C [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

307

Bioenergy crop productivity and potential climate change mitigation from marginal lands in the United States: An  

E-Print Network [OSTI]

Bioenergy crop productivity and potential climate change mitigation from marginal lands bioenergy crops grown on marginal lands in the United States. Two broadly tested cellulosic crops June 2014 Introduction Bioenergy, an important renewable energy produced from biological materials

Zhuang, Qianlai

308

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

309

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

310

Analytical model of brittle destruction based on hypothesis of scale similarity  

SciTech Connect (OSTI)

The size distribution of dust particles in thermonuclear (fusion) devices is closely described by a power law, which may be related to the brittle destruction of materials. The hypothesis of scale similarity leads to the conclusion that the size distribution of particles formed as a result of a brittle destruction is described by a power law with the exponent -{alpha} that can range from -4 to -1. The model of brittle destruction is described in terms of the fractal geometry, and the distribution exponent is expressed via the fractal dimension of packing. Under additional assumptions, it is possible to refine the {alpha} value and, vice versa, to determine the type of destruction using the measured size distribution of particles.

Arakcheev, A. S., E-mail: asarakcheev@gmail.com; Lotov, K. V. [Russian Academy of Sciences, Budker Institute of Nuclear Physics, Siberian Branch (Russian Federation)

2012-08-15T23:59:59.000Z

311

Polished `Hoes', Dancehall Queens, and Sexual Freaks: Voices From the Margins of Caribbean Literature  

E-Print Network [OSTI]

Polished `Hoes', Dancehall Queens, and Sexual Freaks: Voices From the Margins of Caribbean is a book- length project that will examine multiply marginalized Caribbean women's narratives of resistance in the Caribbean, tends to reward normative behavior and marginalizes women who do not conform to set standards

Zhou, Yaoqi

312

Abstract--Although Locational Marginal Pricing (LMP) plays an important role in many restructured wholesale power  

E-Print Network [OSTI]

1 Abstract-- Although Locational Marginal Pricing (LMP) plays an important role in many Terms-- Locational marginal pricing, wholesale power market, AC optimal power flow, DC optimal power congestion by means of Locational Marginal Pricing (LMP), i.e., the pricing of power by the location

Tesfatsion, Leigh

313

A STOCHASTIC PROGRAMMING APPROACH TO QUANTIFYING EFFECTS OF CONTINGENCIES ON LOCATIONAL MARGINAL PRICES  

E-Print Network [OSTI]

on varia- tions of Locational Marginal Prices (LMPs) in restruc- tured power markets. The process: Locational marginal prices (LMPs), Un- certainty, Power system security, Optimization meth- ods, StochasticA STOCHASTIC PROGRAMMING APPROACH TO QUANTIFYING EFFECTS OF CONTINGENCIES ON LOCATIONAL MARGINAL

Stankoviæ, Aleksandar

314

Fast Prediction of Loadability Margins by Constructing a Small-Signal Stability Boundary  

E-Print Network [OSTI]

Fast Prediction of Loadability Margins by Constructing a Small-Signal Stability Boundary Based system. A novel approach is proposed in this paper for fast prediction of loadability margins to predict the loadability margins from any stable operating point along arbitrary loading directions through

Cańizares, Claudio A.

315

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

316

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

317

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

318

Historically, estuaries have been the focal point of extensive industrial activity for maritime nations. Similarly, it is well established that such marginal marine environments are particularly  

E-Print Network [OSTI]

- and sediment-based pollution. In future, these areas will be placed under enhanced environmental pressure. AllHistorically, estuaries have been the focal point of extensive industrial activity for maritime anthropogenic influences, such as: maritime transport (port construction, navigational dredging and dumping

Quartly, Graham

319

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

320

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

322

Mapping the Potential for Biofuel Production on Marginal Lands: Differences in Definitions, Data and Models across Scales  

E-Print Network [OSTI]

land for plantation of Jatropha curcas as feedstocks forMarginal chinensis, 3. Jatropha grow energy plants, or landand economic constraints Jatropha curcas Marginal land ?land

Lewis, Sarah M

2014-01-01T23:59:59.000Z

323

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

324

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

325

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

326

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

327

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

328

Subsystem fragility: Seismic Safety Margins Research Program (Phase I)  

SciTech Connect (OSTI)

Seismic fragility levels of safety related equipment are developed for use in a seismic oriented Probabilistic Risk Assessment (PRA) being conducted as part of the Seismic Safety Margins Research Program (SSMRP). The Zion Nuclear Power Plant is being utilized as a reference plant and fragility descriptions are developed for specific and generic safety related equipment groups in Zion. Both equipment fragilities and equipment responses are defined in probabilistic terms to be used as input to the SSMRP event tree/fault tree models of the Zion systems. 65 refs., 14 figs., 11 tabs.

Kennedy, R. P.; Campbell, R. D.; Hardy, G.; Banon, H.

1981-10-01T23:59:59.000Z

329

Seismic Safety Margins Research Program: a concluding look  

SciTech Connect (OSTI)

The Seismic Safety Margins Research Program (SSMRP) was started in 1978 with the goal of developing tools and data bases to compute the probability of earthquake - caused radioactive release from commercial nuclear power plants. These tools and data bases were to help NRC to assess seismic safety at nuclear plants. The methodology to be used was finalized in 1982 and applied to the Zion Nuclear Power Station. The SSMRP will be completed this year with the development of a more simplified method of analysis and a demonstration of its use on Zion. This simplified method is also being applied to a boiling-water-reactor, LaSalle.

Cummings, G.E.

1984-01-01T23:59:59.000Z

330

Margins in high temperature leak-before-break assessments  

SciTech Connect (OSTI)

Developments in the defect assessment procedure R6 to include high-temperature mechanisms in Leak-before-Break arguments are described. In particular, the effect of creep on the time available to detect a leak and on the crack opening area, and hence leak rate, is discussed. The competing influence of these two effects is emphasized by an example. The application to Leak-before-Break of the time-dependent failure assessment diagram approach for high temperature defect assessment is then outlined. The approach is shown to be of use in assessing the erosion of margins by creep.

Budden, P.J.; Hooton, D.G.

1997-04-01T23:59:59.000Z

331

Marginal Energy Prices - RECS97 Update | Department of Energy  

Energy Savers [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 Inspector General Office0-72.pdfGeorgeDoesn't HappenLow-CostManufacturingMarginal Energy Prices - RECS97

332

Marginal Energy Price Report - July 1999 | Department of Energy  

Energy Savers [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 Delicious RankCombustion |EnergyonSupport0.pdf5 OPAM SEMIANNUAL REPORTMA EnergyMagna1983: StrategicMarginal Energy

333

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

334

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

335

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

336

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

337

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.

338

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

339

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 ...

340

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 ...

Note: This page contains sample records for the topic "refining margins similarly" 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

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...

342

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

343

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 ...

344

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 ...

345

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 ...

346

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 ...

347

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 ...

348

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 ...

349

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 ...

350

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 ...

351

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 ...

352

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 ...

353

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...

354

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 ...

355

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

356

Shock margin testing of a one-axis MEMS accelerometer.  

SciTech Connect (OSTI)

Shock testing was performed on a selected commercial-off-the-shelf - MicroElectroMechanical System (COTS-MEMS) accelerometer to determine the margin between the published absolute maximum rating for shock and the 'measured' level where failures are observed. The purpose of this testing is to provide baseline data for isolating failure mechanisms under shock and environmental loading in a representative device used or under consideration for use within systems and assemblies of the DOD/DOE weapons complex. The specific device chosen for this study was the AD22280 model of the ADXL78 MEMS Accelerometer manufactured by Analog Devices Inc. This study focuses only on the shock loading response of the device and provides the necessary data for adding influence of environmental exposure to the reliability of this class of devices. The published absolute maximum rating for acceleration in any axis was 4000 G for this device powered or unpowered. Results from this study showed first failures at 8000 G indicating a margin of error of two. Higher shock level testing indicated that an in-plane, but off-axis acceleration was more damaging than one in the sense direction.

Parson, Ted Blair; Tanner, Danelle Mary; Buchheit, Thomas Edward

2008-07-01T23:59:59.000Z

357

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

358

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

359

Two Similarity Measure Approaches to Whole Building Fault Diagnosis  

E-Print Network [OSTI]

consumption in buildings using similarity measures. The method is referred to as the cosine similarity method if cosine similarity is adopted and is referred to as the Euclidean distance similarity method if Euclidean distance similarity is implemented.... Fig. 1 Block diagram for diagnosing abnormal energy consumption Step 1: Reference Control Change Library Determination Whole building fault diagnosis is different from component level fault diagnosis. It can only give a general clue, for example...

Lin, G.; Claridge, D.

2012-01-01T23:59:59.000Z

360

Maximum Margin Clustering for State Decomposition of Metastable Systems  

E-Print Network [OSTI]

When studying a metastable dynamical system, a prime concern is how to decompose the phase space into a set of metastable states. Unfortunately, the metastable state decomposition based on simulation or experimental data is still a challenge. The most popular and simplest approach is geometric clustering which is developed based on the classical clustering technique. However, the prerequisites of this approach are: (1) data are obtained from simulations or experiments which are in global equilibrium and (2) the coordinate system is appropriately selected. Recently, the kinetic clustering approach based on phase space discretization and transition probability estimation has drawn much attention due to its applicability to more general cases, but the choice of discretization policy is a difficult task. In this paper, a new decomposition method designated as maximum margin metastable clustering is proposed, which converts the problem of metastable state decomposition to a semi-supervised learning problem so that...

Wu, Hao

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "refining margins similarly" 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

Seismic margin review of the Maine Yankee Atomic Power Station: Fragility analysis  

SciTech Connect (OSTI)

This Fragility Analysis is the third of three volumes for the Seismic Margin Review of the Maine Yankee Atomic Power Station. Volume 1 is the Summary Report of the first trial seismic margin review. Volume 2, Systems Analysis, documents the results of the systems screening for the review. The three volumes are part of the Seismic Margins Program initiated in 1984 by the Nuclear Regulatory Commission (NRC) to quantify seismic margins at nuclear power plants. The overall objectives of the trial review are to assess the seismic margins of a particular pressurized water reactor, and to test the adequacy of this review approach, quantification techniques, and guidelines for performing the review. Results from the trial review will be used to revise the seismic margin methodology and guidelines so that the NRC and industry can readily apply them to assess the inherent quantitative seismic capacity of nuclear power plants.

Ravindra, M. K.; Hardy, G. S.; Hashimoto, P. S.; Griffin, M. J.

1987-03-01T23:59:59.000Z

362

E-Print Network 3.0 - atlantic passive margin Sample Search Results  

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

margin Page: << < 1 2 3 4 5 > >> 1 Proposed Research Studentship Plate modelling, transform faults and the Cretaceous to Summary: stress evolution of the Equatorial Atlantic...

363

E-Print Network 3.0 - african equatorial margin Sample Search...  

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

margin Page: << < 1 2 3 4 5 > >> 1 Proposed Research Studentship Plate modelling, transform faults and the Cretaceous to Summary: Project Description The African equatorial...

364

E-Print Network 3.0 - african continental margin Sample Search...  

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

margin Page: << < 1 2 3 4 5 > >> 1 Proposed Research Studentship Plate modelling, transform faults and the Cretaceous to Summary: Project Description The African equatorial...

365

E-Print Network 3.0 - antarctic continental margin Sample Search...  

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

and on the size of the ice sheet. Therefore the Cenozoic appearance of Antarctic sea ice... cooling feedback associated with sea ice, its growth around the Antarctic margin...

366

E-Print Network 3.0 - appalachian margin foundering Sample Search...  

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

margin foundering Page: << < 1 2 3 4 5 > >> 1 Appalachian State University Foundation, Inc. Monthly Payroll Deduction Form (A-3) Summary: Appalachian State University...

367

E-Print Network 3.0 - arable field margins Sample Search Results  

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

Environmental Sciences and Ecology 2 Earthworm diversity and ecosystem services in a landscape context Summary: functions: agriculture, recreation 12;Sampling in field margins...

368

Geology of the San Diego margin, Carlsbad to La Jolla, San Diego County, California.  

E-Print Network [OSTI]

??Geophysical interpretation of nearly 800 line km of various types of seismic reflection data along the San Diego margin between Carlsbad and San Diego was… (more)

Webb, James Franklin

1984-01-01T23:59:59.000Z

369

Treatment of Passive Component Reliability in Risk-Informed Safety Margin Characterization FY 2010 Report  

SciTech Connect (OSTI)

The Risk-Informed Safety Margin Characterization (RISMC) pathway is a set of activities defined under the U.S. Department of Energy (DOE) Light Water Reactor Sustainability Program. The overarching objective of RISMC is to support plant life-extension decision-making by providing a state-of-knowledge characterization of safety margins in key systems, structures, and components (SSCs). A technical challenge at the core of this effort is to establish the conceptual and technical feasibility of analyzing safety margin in a risk-informed way, which, unlike conventionally defined deterministic margin analysis, is founded on probabilistic characterizations of SSC performance.

Robert W Youngblood

2010-09-01T23:59:59.000Z

370

Croatian refiner meets waste water treatment standards, reduces fines  

SciTech Connect (OSTI)

A new approach to waste water treatment at a refinery in Croatia produces effluent that not only meets the region`s regulations for disposal into the Adriatic Sea, but also surpasses the refinery`s specifications for recycling process water. Key to the dramatic reduction in pollutants was the installation of a Sandfloat unit developed by Krofta Engineering Corp. The Sandfloat unit is a dissolved air flotation clarifier that combines flocculation, flotation, and multilayer filtration to produce high-quality effluent. In fact, the effluent from the unit has a lower hydrocarbon concentration than water from the underground wells that supply process water to the refinery. While similar systems have been used for decades in industrial applications, this is the first time a Sandfloat unit has been installed in an oil refinery. The article describes the problem, refinery operations, treatment costs, and effluent recycling.

Meier, A.L. [Krofta Engineering Corp., Lenox, MA (United States); Nikolic, O. [INA Oil Refinery, Rijeka (Croatia)

1995-11-27T23:59:59.000Z

371

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.

372

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

373

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

374

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

375

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

376

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

377

Analysis of the efficiency and potential collapse of the ensemble Kalman filter for marginal and joint posteriors  

E-Print Network [OSTI]

In data assimilation one updates the state of a numerical model with information from sparse and noisy observations of the model's state. A popular approach to data assimilation in geophysical applications is the ensemble Kalman filter (EnKF). An alternative approach is particle filtering and, recently, much theoretical work has been done to understand the abilities and limitations of particle filters. Here we extend this work to EnKF. First we explain that EnKF and particle filters solve different problems: the EnKF approximates a specific marginal of the joint posterior of particle filters. We then perform a linear analysis of the EnKF as a sequential sampling algorithm for the joint posterior (i.e. as a particle filter), and show that the EnKF collapses on this problem in the exact same way and under similar conditions as particle filters. However, it is critical to realize that the collapse of the EnKF on the joint posterior does not imply its collapse on the marginal posterior. This raises the question, ...

Morzfeld, Matthias

2015-01-01T23:59:59.000Z

378

Marginal formations of the last Kara and Barents ice sheets in northern European Russia  

E-Print Network [OSTI]

Marginal formations of the last Kara and Barents ice sheets in northern European Russia VALERY I): Marginal formations of the last Kara and Barents ice sheets in northern European Russia. Boreas, Vol. 28, pp. 23­45. Oslo. ISSN 0300-9483. Glacial landforms in northern Russia, from the Timan Ridge

IngĂłlfsson, Ă?lafur

379

100,000 Years of African monsoon variability recorded in sediments of the Nile margin  

E-Print Network [OSTI]

100,000 Years of African monsoon variability recorded in sediments of the Nile margin Marie Revel a in hemipelagic sediments deposited on the Nile margin in order to reconstruct Nile River palaeohydrological. This allows the use of a high-resolution continuous Fe record as a proxy of Blue Nile sediment input over

Demouchy, Sylvie

380

The Continental Margin is a Key Source of Iron to the HNLC North Pacific Ocean  

E-Print Network [OSTI]

The Continental Margin is a Key Source of Iron to the HNLC North Pacific Ocean Phoebe J. Lam1 concentrations in the upper 500m of the Western Subarctic Pacific, an iron-limited High Nutrient Low Chlorophyll a key source of bioavailable Fe to the HNLC North Pacific. Keywords: iron, continental margin, HNLC 1

Note: This page contains sample records for the topic "refining margins similarly" 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

Long-Term Mitigation Strategies and Marginal Abatement Cost Curves: A Case Study on Brazil  

E-Print Network [OSTI]

Long-Term Mitigation Strategies and Marginal Abatement Cost Curves: A Case Study on Brazil Adrien abatement targets need to decide which abatement mea- sures to implement, and in which order. This paper investigates the ability of marginal abatement cost (MAC) curves to inform this decision, reanalyzing a MAC

Paris-Sud XI, Université de

382

Marginal abatement cost curves and the optimal timing of mitigation measures  

E-Print Network [OSTI]

Marginal abatement cost curves and the optimal timing of mitigation measures Adrien Vogt-Schilb 1, Washington D.C., USA Abstract Decision makers facing abatement targets need to decide which abatement mea- sures to implement, and in which order. Measure-explicit marginal abatement cost curves depict the cost

Paris-Sud XI, Université de

383

Improvement of LWR thermal margins by introducing thorium Cheuk Wah Lau a,*, Christophe Demazire a  

E-Print Network [OSTI]

Improvement of LWR thermal margins by introducing thorium Cheuk Wah Lau a,*, Christophe Demazière Keywords: Thorium PWR Thermal margins Transport calculations a b s t r a c t The use of thorium pins contain a mixture of uranium and thorium oxides, while a few fuel pins contain a mixture between

Demazière, Christophe

384

Ranking Structured Documents: A Large Margin Based Approach for Patent Prior Art Search  

E-Print Network [OSTI]

Ranking Structured Documents: A Large Margin Based Approach for Patent Prior Art Search Yunsong Guo propose an approach for automatically rank- ing structured documents applied to patent prior art search. Our model, SVM Patent Ranking (SVMP R) incorporates margin constraints that di- rectly capture

Gomes, Carla P.

385

ELSEVIER Geomorphology 14 (1995) 109-121 Hypsometric forcing of stagnant ice margins: Pleistocene valley  

E-Print Network [OSTI]

ELSEVIER Geomorphology 14 (1995) 109-121 Hypsometric forcing of stagnant ice margins: Pleistocene December 1994 Abstract Topographic and sedimentological evidence indicates that stagnant ice conditions position for a stagnant ice margin to develop during valley glacier retreat. In the first model, valley

Small, Eric

1995-01-01T23:59:59.000Z

386

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

387

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

388

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

389

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

390

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

391

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

392

Structural development of the western margins of the Sirte basin  

SciTech Connect (OSTI)

The Sirte basin, situated in north-central Libya, is a broad, northwest-trending embayment comprising a complex of small horsts and grabens. The basin was initiated in the early Cretaceous by collapse of the Tibisti-Sirte arch and underwent further faulting, notably in Late Cretaceous to early paleocene time and during the latter part of the Eocene. Throughout the greater part of the region, faults are obscured by Neogene cover; however, west of the Dahra-Hofra horst they are exposed. The last major phase of faulting in this region is late Lutetian to early Priabonian in age with minor reactivation during Oligocene and Miocene time. A phase of intra-Lutetian movement is also recognized. Following deposition of open marine limestones and chalks in the early Lutetian, the region was tilted toward the east-northeast with emergence and development of a complex system of east-flowing drainage channels which sculpted the emerging surface. The channels are wide but shallow, ranging up to 2 km wide and 10 m deep. This phase of movement and intraformational erosion was terminated by slow subsidence and/or transgression with development of restricted marine shales. The late Eocene faults which delineate the western margin of the Dahra horst throw down to the west and display a complex en echelon pattern. They are interpreted in terms of Riedel shear mechanics related to oblique-slip reactivation of basement shears. Counterclockwise orientation of the shears indicates they formed in response to sinistral slip.

Anketell, J.M.; Kumati, S.M.

1988-08-01T23:59:59.000Z

393

Development of a hybrid margin angle controller for HVDC continuous operation  

SciTech Connect (OSTI)

The objective of this paper is to present a new hybrid margin angle control method for HVDC continuous operation under AC system fault conditions. For stable continuous operation of HVDC systems, the margin angle controller must be designed to maintain the necessary margin angle to avoid commutation failures. The proposed method uses the open loop margin angle controller (MAC) as the basic controller, and adds output from the closed loop MAC to correct the control angle. A fast voltage detection algorithm is used for open loop control, and margin angle reference correction using harmonics detection for closed loop control are also developed. The combination of open and closed loop control provides quick responses when faults occur with stable and speedy recovery after fault clearance. The effectiveness of the developed controller is confirmed through EMTP digital simulations and also with the experiments using an analogue simulator.

Sato, M. [Kansai Electric Power Co., Osaka (Japan)] [Kansai Electric Power Co., Osaka (Japan); Yamaji, K. [Shikoku Electric Power Co., Takamatsu (Japan)] [Shikoku Electric Power Co., Takamatsu (Japan); Sekita, M. [Electric Power Development Co., Tokyo (Japan)] [Electric Power Development Co., Tokyo (Japan); Amano, M.; Nishimura, M.; Konishi, H.; Oomori, T. [Hitachi, Ltd. (Japan)] [Hitachi, Ltd. (Japan)

1996-11-01T23:59:59.000Z

394

Risk-Informed Safety Margin Characterization Methods Development Work  

SciTech Connect (OSTI)

This report summarizes the research activity developed during the Fiscal year 2014 within the Risk Informed Safety Margin and Characterization (RISMC) pathway within the Light Water Reactor Sustainability (LWRS) campaign. This research activity is complementary to the one presented in the INL/EXT-??? report which shows advances Probabilistic Risk Assessment Analysis using RAVEN and RELAP-7 in conjunction to novel flooding simulation tools. Here we present several analyses that prove the values of the RISMC approach in order to assess risk associated to nuclear power plants (NPPs). We focus on simulation based PRA which, in contrast to classical PRA, heavily employs system simulator codes. Firstly we compare, these two types of analyses, classical and RISMC, for a Boiling water reactor (BWR) station black out (SBO) initiating event. Secondly we present an extended BWR SBO analysis using RAVEN and RELAP-5 which address the comments and suggestions received about he original analysis presented in INL/EXT-???. This time we focus more on the stochastic analysis such probability of core damage and on the determination of the most risk-relevant factors. We also show some preliminary results regarding the comparison between RELAP5-3D and the new code RELAP-7 for a simplified Pressurized Water Reactors system. Lastly we present some conceptual ideas regarding the possibility to extended the RISMC capabilities from an off-line tool (i.e., as PRA analysis tool) to an online-tool. In this new configuration, RISMC capabilities can be used to assist and inform reactor operator during real accident scenarios.

Smith, Curtis L; Ma, Zhegang; Tom Riley; Mandelli, Diego; Nielsen, Joseph W; Alfonsi, Andrea; Rabiti, Cristian

2014-09-01T23:59:59.000Z

395

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

396

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

397

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.

398

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

399

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

400

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

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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

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

402

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

403

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

404

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 ...

405

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...

406

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 ...

407

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 ...

408

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 ...

409

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 ...

410

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 ...

411

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

412

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.

413

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

414

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

415

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

416

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

417

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

418

Self-similar expanding solutions for the planar network flow  

E-Print Network [OSTI]

Self-similar expanding solutions for the planar network flow Rafe Mazzeo Stanford University-similar expanding solutions of the cur- vature flow on planar networks where the initial configuration is any num generally, one might consider the flow by curvature for net- works of curves. Definition 1.1. A planar

Mazzeo, Rafe

419

Measure Theory of Self-Similar Groups and Digit Tiles  

E-Print Network [OSTI]

-affine tiles. Previously the main tools in the theory of self-similar fractals were tools from measure theory and analysis. The methods developed in this disseration provide a new way to investigate self-similar and self-affine fractals, using combinatorics...

Kravchenko, Rostyslav

2011-02-22T23:59:59.000Z

420

Cross-Language High Similarity Search Using a Conceptual Thesaurus  

E-Print Network [OSTI]

Cross-Language High Similarity Search Using a Conceptual Thesaurus Parth Gupta, Alberto Barr Universitat Polit`ecnica de Val`encia, Spain {pgupta,lbarron,prosso}@dsic.upv.es http://www.dsic.upv.es/grupos/nle Abstract. This work addresses the issue of cross-language high similarity and near-duplicates search, where

Rosso, Paolo

Note: This page contains sample records for the topic "refining margins similarly" 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

ECG beats classification using waveform similarity and RR interval  

E-Print Network [OSTI]

1 ECG beats classification using waveform similarity and RR interval Ahmad Khoureich Ka Abstract--This paper present an electrocardiogram (ECG) beat classification method based on waveform similarity and RR. Heart beats of 128 samples data centered on the R peak are extracted from the ECG signal and thence

Boyer, Edmond

422

Summary of Findings from the Biomass Refining Consortium for Applied Fundamentals and Innovation (CAFI): Corn Stover Pretreatment  

SciTech Connect (OSTI)

The Biomass Refining Consortium for Applied Fundamentals and Innovation, with members from Auburn University, Dartmouth College, Michigan State University, the National Renewable Energy Laboratory, Purdue University, Texas A&M University, the University of British Columbia, and the University of California at Riverside, has developed comparative data on the conversion of corn stover to sugars by several leading pretreatment technologies. These technologies include ammonia fiber expansion pretreatment, ammonia recycle percolation pretreatment, dilute sulfuric acid pretreatment, flowthrough pretreatment (hot water or dilute acid), lime pretreatment, controlled pH hot water pretreatment, and sulfur dioxide steam explosion pretreatment. Over the course of two separate USDA- and DOE-funded projects, these pretreatment technologies were applied to two different corn stover batches, followed by enzymatic hydrolysis of the remaining solids from each pretreatment technology using identical enzyme preparations, enzyme loadings, and enzymatic hydrolysis assays. Identical analytical methods and a consistent material balance methodology were employed to develop comparative sugar yield data for each pretreatment and subsequent enzymatic hydrolysis. Although there were differences in the profiles of sugar release, with the more acidic pretreatments releasing more xylose directly in the pretreatment step than the alkaline pretreatments, the overall glucose and xylose yields (monomers + oligomers) from combined pretreatment and enzymatic hydrolysis process steps were very similar for all of these leading pretreatment technologies. Some of the water-only and alkaline pretreatment technologies resulted in significant amounts of residual xylose oligomers still remaining after enzymatic hydrolysis that may require specialized enzyme preparations to fully convert xylose oligomers to monomers.

Elander, R. T.; Dale, B. E.; Holtzapple, M.; Ladisch, M. R.; Lee, Y. Y.; Mitchinson, C.; Saddler, J. N.; Wyman, C. E.

2009-01-01T23:59:59.000Z

423

Thermal segmentation along the N. EcuadorS. Colombia margin (14N): Prominent influence of sedimentation rate in the trench  

E-Print Network [OSTI]

Thermal segmentation along the N. Ecuador­S. Colombia margin (1­4°N): Prominent influence Ecuador Colombia Along the deformation front of the North Ecuador­South Colombia (NESC) margin, both

Vallée, Martin

424

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

425

880 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 19, NO. 2, MAY 2004 Marginal Loss Modeling in LMP Calculation  

E-Print Network [OSTI]

in the locational marginal pricing approach recently deployed in the ISO New England (ISO-NE) standard market design) [1] proposes location-based marginal pricing (LMP) together with firm transmission rights (FTR, Senior Member, IEEE Abstract--This paper discusses the pricing of marginal trans- mission network losses

McCalley, James D.

426

Abstract--The capability to deal effectively with the uncer-tainty associated with locational marginal prices (LMPs) in con-  

E-Print Network [OSTI]

, standard market design, locational marginal prices, fixed/firm/financial transmission rights, transmission.S. electricity sector. The proposal uses locational marginal prices (LMPs) to identify congestion situations marginal prices (LMPs) in con- gestion management schemes requires the development of ap- propriate

427

Abstract--This paper introduces the fundamental concept of locational marginal price (LMP) in the electricity markets, and  

E-Print Network [OSTI]

1 Abstract--This paper introduces the fundamental concept of locational marginal price (LMP Terms-- Congestion charge, locational marginal price, LMP difference, nodal price. NOMENCLATURE ba) are to implement the locational marginal pricing [1-3]. Under Standard Market Design (SMD) issued by FERC in July

Fu, Yong

428

South Atlantic continental margins of Africa: A comparison of the tectonic vs climate interplay on the evolution  

E-Print Network [OSTI]

South Atlantic continental margins of Africa: A comparison of the tectonic vs climate interplay on the evolution of equatorial west Africa and SW Africa margins Michel Se´ranne *, Zahie Anka UMR 5573 Dynamique February 2005; accepted 18 July 2005 Abstract Africa displays a variety of continental margin structures

Demouchy, Sylvie

429

Power Margin Reduction in Linear passive UHF RFID tag arrays  

E-Print Network [OSTI]

penetration in a distributed Bragg reflector used in optical devices [12]. The structure of the distributed Bragg reflector consists of an alternating sequence of two materials of different optical impedances which can be treated as being similar to a tag... and Applications in Contactless Smart Cards and Identification, 2nd edition, New York, NY USA: Wiley, 2003, pp. 29-180, pp. 229-328. [2] United States Department of Defense Suppliers’ Passive RFID Information Guide, Version 15.0, pp. 20, [Online]. Avilable...

Zhang, Qi; Crisp, Michael; White, Ian H.; Penty, Richard V.

2014-07-17T23:59:59.000Z

430

Support vector machines with the ramp loss and the hard margin loss  

E-Print Network [OSTI]

Nov 4, 2008 ... Support vector machines with the ramp loss and the hard margin loss. J.P. Brooks (jpbrooks ***at*** vcu.edu). Abstract: In the interest of ...

J.P. Brooks

2008-11-04T23:59:59.000Z

431

Understanding the Zongo : processes of socio-spatial marginalization in Ghana  

E-Print Network [OSTI]

The spatial processes of marginalization and ghettoization have been described, labeled, and theorized extensively in the United States and Europe, yet there has been little research dedicated to these processes in the ...

Williamson, Emily Anne

2014-01-01T23:59:59.000Z

432

Test to Determine Margin-to-Failure for Hy-100 Steel with Undermatched Welds  

SciTech Connect (OSTI)

This test program was undertaken to determine the flaw tolerance and to quantify the strength margin-to-failure of high yield strength steel fillet welded specimens. The tests demonstrate adequate margin-to-failure for HY-100 specimens fabricated with matched welding systems. In the use of high yield (HY) steel materials in designs required to accommodate rapidly applied dynamic loads, the concern was raised where the possibility of decreased flaw tolerance and premature failure by unstable ductile tearing could limit their use. Tests were developed and conducted to demonstrate adequate margin-to-failure in HY-100 fillet and partial penetration welded structures. In addition, inelastic analytical predictions were performed to assess the accuracy of such predictive tools compared to actual test data. Results showed that adequate margin-to-failure exists when using matched welding systems.

K.R. Arpin; T.F. Trimble

2003-04-01T23:59:59.000Z

433

Storytelling on the margins : a theoretical framework for imagining a fashion innovation center in Tuscany  

E-Print Network [OSTI]

The importance of the margin has long been deemed important in creative processes. At both the level of the individual and the level of the city, research shows that creativity tends to flourish on the philosophical and ...

Mills, Alexa (Alexa Timeaus)

2008-01-01T23:59:59.000Z

434

Analysis of post-Kyoto CO? emissions trading using marginal abatement curves  

E-Print Network [OSTI]

Marginal abatement curves (MACs) are often used heuristically to demonstrate the advantages of emissions trading. In this paper, the authors derive MACs from EPPA, the MIT Joint Program's computable general equilibrium ...

Ellerman, A. Denny.; Decaux, Annelčne.

435

Developing improved nuclear magnetic resonance marginal oscillator spectrometers for advanced teaching laboratories  

E-Print Network [OSTI]

DEVELOPING IMPROVED NUCLEAR MAGNETIC RESONANCE MARGINAL OSCILLATOR SPECTROMETERS FOR ADVANCED TEACHING LABORATORIES A Thesis by FRANK PHILLIP WILLINGHAM Submitted to the Office of Graduate Studies of Texas ASM University in partial... fulfillment of the requirements for the degree of MASTER OF SCIENCE D e cemb er 1988 Major Subject: Physics DEVELOPING IMPROVED NUCLEAR MAGNETIC RESONANCE MARGINAL OSCILLATOR SPECTROMETERS FOR ADVANCED TEACHING LABORATORIES A Thesis by FRANK PHILLIP...

Willingham, Frank Phillip

1988-01-01T23:59:59.000Z

436

Mesozoic evolution of the northeast African shelf margin, Libya and Egypt  

SciTech Connect (OSTI)

The present tectonic features of the northeast African shelf margin between the Nile delta and the Gulf of Sirte are products of (1) precursory late Paleozoic basement arches, (2) early Mesozoic rifting and plate separation, and (3) Late Cretaceous structural inversion. Isopach and structural maps, cross sections, and sediment accumulation (geohistory) curves constructed from 89 wells in the Western Desert and 27 wells in northeastern Libya depict the structural and stratigraphic development of the northeast African shelf margin.

Aadland, R.K.; Schamel, S.

1988-08-01T23:59:59.000Z

437

Self-similar spherical shock solution with sustained energy injection  

E-Print Network [OSTI]

We present the generalization of the Sedov-Taylor self-similar strong spherical shock solution for the case of a central energy source varying in time, $E=A t^k$, where $A$ and $k$ are constants. The known Sedov-Taylor solution corresponds to a particular adiabatic case of $k=0$ or \\emph{instant shock} with an instant energy source of the shock, $E=A$. The self-similar hydrodynamic flow in the nonadiabatic $k\

V. I. Dokuchaev

2002-09-20T23:59:59.000Z

438

Risk Informed Safety Margin Characterization Case Study: Selection of Electrical Equipment To Be Subjected to Environmental Qualification  

SciTech Connect (OSTI)

In general, the margins-based safety case helps the decision-maker manage plant margins most effectively. It tells the plant decision-maker such things as what margin is present (at the plant level, at the functional level, at the barrier level, at the component level), and where margin is thin or perhaps just degrading. If the plant is safe, it tells the decision-maker why the plant is safe and where margin needs to be maintained, and perhaps where the plant can afford to relax.

R. Youngblood; D. Blanchard

2011-09-01T23:59:59.000Z

439

Risk Informed Safety Margin Characterization Case Study: Selection of Electrical Equipment To Be Subjected to Environmental Qualification  

SciTech Connect (OSTI)

In general, the margins-based safety case helps the decision-maker manage plant margins most effectively. It tells the plant decision-maker such things as what margin is present (at the plant level, at the functional level, at the barrier level, at the component level), and where margin is thin or perhaps just degrading. If the plant is safe, it tells the decision-maker why the plant is safe and where margin needs to be maintained, and perhaps where the plant can afford to relax.

D. Blanchard; R. Youngblood

2012-04-01T23:59:59.000Z

440

SUESS ET AL.: SEA FLOOR METHANE HYDRATES AT HYDRATE RIDGE, CASCADIA MARGIN Sea Floor Methane Hydrates at Hydrate Ridge, Cascadia Margin  

E-Print Network [OSTI]

SUESS ET AL.: SEA FLOOR METHANE HYDRATES AT HYDRATE RIDGE, CASCADIA MARGIN 1 Sea Floor Methane are exposed at the sea floor. A methane-oxidizing bacterial consortium populates the exposures of hydrate; colonies of vent macro-fauna are abundant as well. Discharge of methane from destabilized hydrate

Goldfinger, Chris

Note: This page contains sample records for the topic "refining margins similarly" 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

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

442

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

443

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

444

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

445

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

446

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

447

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

448

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

449

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

450

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

451

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

452

,"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

453

,"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

454

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

455

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

456

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

457

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.

458

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

459

Self-similar Breakup of Near-inviscid Fluids  

E-Print Network [OSTI]

Castrejon-Pita, J.R., Castrejon-Pita, A.A., Hinch, E.J., Lister, J.R., Hutchings, I.M., Physical Review (in press 2012) 'Self-similar Breakup of Near-inviscid Fluids' Self-similar Breakup of Near-inviscid Fluids J.R. Castrejo´n-Pita, A.A. Castrejo... 3 9EW, U.K. The final stages of pinchoff and breakup of dripping droplets of near-inviscid Newtonian fluids are studied experimentally for pure water and ethanol. High speed imaging and image analysis are used to determine the angle and the minimum...

Castrejon-Pita, J.R.; Castrejon-Pita, A.A.; Hinch, E.J.; Lister, J.R.; Hutchings, I.M.

2012-01-01T23:59:59.000Z

460

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

462

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

463

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

464

Hardware Acceleration for Similarity Measurement in Natural Language Processing  

E-Print Network [OSTI]

energy per similarity- computation compared to an optimized software implementation, while requiring less scaling, but in the absence of Dennard scaling, motivates an emphasis on energy- efficient accelerator- ically analyze vast text collections--using scale-out processing-- incurs high energy and hardware costs

Wenisch, Thomas F.

465

Generalizing by Similarity: Lessons Learnt from Industrial Case Studies  

E-Print Network [OSTI]

about similarities and dissimilarities between past and future cases (i.e. projects1 by other IT vendor organizations and researchers who want to generalize from past cases to present. It would save them a lot of cost and effort if they could reliably depend on their past experience and draw

Wieringa, Roel

466

Mutual Information Based Extrinsic Similarity for Microarray Analysis  

E-Print Network [OSTI]

cellular level tasks [23]. Thus, here we investigate use of extrinsic similarity measures to analyze and Engineering, The Ohio State University, Columbus, OH 2 ASELSAN A.S. Radar, EW, and Intelligence Systems to find gene pairs with correlated expression profiles is to use linear measures like Pearson

Ferhatosmanoglu, Hakan

467

Introduction Speech and non-speech exhibit similar spectrally contrastive  

E-Print Network [OSTI]

in 3 noise conditions Perception of coarticulated speech with contrastively enhanced spectrotemporal Conclusions General, non-speech-specific contrast enhancement can benefit recognition of coarticulated speechIntroduction Speech and non-speech exhibit similar spectrally contrastive context effects on speech

Holt, Lori L.

468

University of Florida Cell Phone/Similar Wireless Communication Devices  

E-Print Network [OSTI]

University of Florida Cell Phone/Similar Wireless Communication Devices Reimbursement Request Form the appropriate box * Purchase Reimbursement:* Monthly Reimbursement:Cell Phone * Purchase Reimbursement:* Monthly than $150 per month. The purchase reimbursement limit for each device is $150.00 for cell phones

Sin, Peter

469

Atmospheric CO2 concentrations during ancient greenhouse climates were similar  

E-Print Network [OSTI]

Atmospheric CO2 concentrations during ancient greenhouse climates were similar to those predicted atmospheric CO2 concentrations (½CO2atm) during Earth's ancient greenhouse episodes is essential for accurately predicting the response of future climate to elevated CO2 levels. Empirical estimates of ½CO2atm

Ahmad, Sajjad

470

Self-similar and charged spheres in the diffusion approximation  

E-Print Network [OSTI]

We study spherical, charged and self--similar distributions of matter in the diffusion approximation. We propose a simple, dynamic but physically meaningful solution. For such a solution we obtain a model in which the distribution becomes static and changes to dust. The collapse is halted with damped mass oscillations about the absolute value of the total charge.

Barreto, W

1999-01-01T23:59:59.000Z

471

Minireview 501 Kinesin and myosin: molecular motors with similar engines  

E-Print Network [OSTI]

Minireview 501 Kinesin and myosin: molecular motors with similar engines Ivan Rayment Structure molecu- lar motors that fulfill many of these tasks. These fall into three general classes of molecular motor exhibits the same architecture as myosin and suggests that these microtubule- and actin

Rayment, Ivan

472

Similarity between positronium-atom and electron-atom scattering  

E-Print Network [OSTI]

We employ the impulse approximation for description of positronium-atom scattering. Our analysis and calculations of Ps-Kr and Ps-Ar collisions provide theoretical explanation of the similarity between the cross sections for positronium scattering and electron scattering for a range of atomic and molecular targets observed by S. J. Brawley et al. [Science 330, 789 (2010)].

Fabrikant, I I

2015-01-01T23:59:59.000Z

473

Analyzing Parallelism and Domain Similarities in the MAREC Patent Corpus  

E-Print Network [OSTI]

Analyzing Parallelism and Domain Similarities in the MAREC Patent Corpus Katharina W}@cl.uni-heidelberg.de Abstract. Statistical machine translation of patents requires large a- mounts of sentence-parallel data. Translations of patent text often exist for parts of the patent document, namely title, abstract and claims

Riezler, Stefan

474

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

475

Wintertime pytoplankton bloom in the Subarctic Pacific supportedby continental margin iron  

SciTech Connect (OSTI)

Heightened biological activity was observed in February 1996in the high-nutrient low-chlorophyll (HNLC) subarctic North PacificOcean, a region that is thought to beiron-limited. Here we provideevidence supporting the hypothesis that Ocean Station Papa (OSP) in thesubarctic Pacific received a lateral supply of particulate iron from thecontinental margin off the Aleutian Islands in the winter, coincidentwith the observed biological bloom. Synchrotron X-ray analysis was usedto describe the physical form, chemistry, and depth distributions of ironin size fractionated particulate matter samples. The analysis revealsthat discrete micron-sized iron-rich hotspots are ubiquitous in the upper200m at OSP, more than 900km from the closest coast. The specifics of thechemistry and depth profiles of the Fe hot spots trace them to thecontinental margins. We thus hypothesize that iron hotspots are a markerfor the delivery of iron from the continental margin. We confirm thedelivery of continental margin iron to the open ocean using an oceangeneral circulation model with an iron-like tracer source at thecontinental margin. We suggest that iron from the continental marginstimulated a wintertime phytoplankton bloom, partially relieving the HNLCcondition.

Lam, Phoebe J.; Bishop, James K.B.; Henning, Cara C.; Marcus,Matthew A.; Waychunas, Glenn A.; Fung, Inez

2004-06-08T23:59:59.000Z

476

Similarities in the Paleozoic successions of north Africa and Arabia and implications for petroleum exploration  

SciTech Connect (OSTI)

From field studies in southwest Libya and northwest Saudi Arabia, the facies of the Paleozoic succession of the north African/Arabian stable cratonic margin of Gondwanaland are interpreted as fluvial, estuarine, deltaic, shallow marine, and glacial deposits. The facies of the Saq and Tabuk Formations of Saudi Arabia bear witness to a sedimentary history that is very similar to that of north Africa, the Saq Formation (Cambrian-Arenig) being equivalent to the Hassaouna Formation of Libya and the Tabuk Formation being subdivided and correlated using well-dated shale members to the following formations: Haouaz (Llanvirn-Llandeilo), Melez-Chograne (Caradoc), Memouniat (Ashgill), Tanezzuft/Acacus (Llandovery-Ludlow), and Tadrart (Gedinnian -Emsian). The Cambrian-Ordovician succession comprises Nubian-type fluvial and estuarine sandstones which pass up to regressive deltaic/shallow marine sequences overlain by Upper Ordovician glacial deposits that lie in deeply incised paleovalleys recorded from Saudi Arabia and north Africa. The Silurian succession comprises the deposits of a postglacial marine transgression of vast lateral extent and a subsequent regression, the sandstones of which are markedly diachronous. The Lower Devonian succession comprises fining-upward retrogradational deltaic (transgressive) sequences of Nubian-type sandstones (fluvial to shallow marine) which form widespread blanket sandstone bodies. The prospectivity of these strata is well known from Algeria in the west to Jordan in the east, the Llandoverian oil-prone source rocks providing the key to Cambrian-Ordovician and Lower Devonian plays. The significance of underlying paleovalley-fill fluvioglacial sandstones as linear reservoir targets has yet to be fully appreciated.

Clark-Lowes, D.D. (Scott Pickford and Associates Ltd., Surrey (England))

1988-08-01T23:59:59.000Z

477

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

478

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

479

Similarity Matching Techniques for Fault Diagnosis in Automotive Infotainment Electronics  

E-Print Network [OSTI]

Fault diagnosis has become a very important area of research during the last decade due to the advancement of mechanical and electrical systems in industries. The automobile is a crucial field where fault diagnosis is given a special attention. Due to the increasing complexity and newly added features in vehicles, a comprehensive study has to be performed in order to achieve an appropriate diagnosis model. A diagnosis system is capable of identifying the faults of a system by investigating the observable effects (or symptoms). The system categorizes the fault into a diagnosis class and identifies a probable cause based on the supplied fault symptoms. Fault categorization and identification are done using similarity matching techniques. The development of diagnosis classes is done by making use of previous experience, knowledge or information within an application area. The necessary information used may come from several sources of knowledge, such as from system analysis. In this paper similarity matching tec...

Kabir, Mashud

2009-01-01T23:59:59.000Z

480

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

Note: This page contains sample records for the topic "refining margins similarly" 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

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

482

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

483

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

484

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

485

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

486

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

487

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

488

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

489

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

490

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

491

,"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

492

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

493

,"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

494

,"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

495

Philip Henry Wicksteed's marginal productivity theory of distribution and an investigation of those factors which influenced its formulation  

E-Print Network [OSTI]

is. . . the most exhaustive non-mathematical exposition of the technical and philo- sophical complications of the so-called marginal theory 37 Lionel Robbins, "The Economic Works of Philip Wicksteed", Economica, Vol. 10 (November, 1930), 247. 38...*k: Doubleday Page and Co. , 1904 , p. 213. 63 Robbins, "Economic Works of Wicksteed", Economica, p. 247. 23 are rewarded in accord with their marginal products and the total product would then be exactly exhausted, the marginal productivity theory used...

Garner, Joseph Key

1970-01-01T23:59:59.000Z

496

Integrating Safety Assessment Methods using the Risk Informed Safety Margins Characterization (RISMC) Approach  

SciTech Connect (OSTI)

Safety is central to the design, licensing, operation, and economics of nuclear power plants (NPPs). As the current light water reactor (LWR) NPPs age beyond 60 years, there are possibilities for increased frequency of systems, structures, and components (SSC) degradations or failures that initiate safety significant events, reduce existing accident mitigation capabilities, or create new failure modes. Plant designers commonly “over-design” portions of NPPs and provide robustness in the form of redundant and diverse engineered safety features to ensure that, even in the case of well-beyond design basis scenarios, public health and safety will be protected with a very high degree of assurance. This form of defense-in-depth is a reasoned response to uncertainties and is often referred to generically as “safety margin.” Historically, specific safety margin provisions have been formulated primarily based on engineering judgment backed by a set of conservative engineering calculations. The ability to better characterize and quantify safety margin is important to improved decision making about LWR design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margin management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. In addition, as research and development (R&D) in the LWR Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. To support decision making related to economics, readability, and safety, the RISMC Pathway provides methods and tools that enable mitigation options known as margins management strategies. The purpose of the RISMC Pathway R&D is to support plant decisions for risk-informed margin management with the aim to improve economics, reliability, and sustain safety of current NPPs. As the lead Department of Energy (DOE) Laboratory for this Pathway, the Idaho National Laboratory (INL) is tasked with developing and deploying methods and tools that support the quantification and management of safety margin and uncertainty.

Curtis Smith; Diego Mandelli

2013-03-01T23:59:59.000Z

497

Light Water Reactor Sustainability Program Risk Informed Safety Margin Characterization (RISMC) Advanced Test Reactor Demonstration Case Study  

SciTech Connect (OSTI)

Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). Consequently, the ability to better characterize and quantify safety margin holds the key to improved decision making about LWR design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margins management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. The purpose of the RISMC Pathway R&D is to support plant decisions for risk-informed margins management with the aim to improve economics, reliability, and sustain safety of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced “RISMC toolkit” that enables more accurate representation of NPP safety margin. This report describes the RISMC methodology demonstration where the Advanced Test Reactor (ATR) was used as a test-bed for purposes of determining safety margins. As part of the demonstration, we describe how both the thermal-hydraulics and probabilistic safety calculations are integrated and used to quantify margin management strategies.

Curtis Smith; David Schwieder; Cherie Phelan; Anh Bui; Paul Bayless

2012-08-01T23:59:59.000Z

498

Why Have Bank Interest Margins Been so High in Indonesia since the 1997/1998 Financial Crisis?  

E-Print Network [OSTI]

this fact. Demirgüç- Kunt and Huizinga (1998) show that the average margins of Indonesian banks for the 1988

Paris-Sud XI, Université de

499

Mapping the Potential for Biofuel Production on Marginal Lands: Differences in Definitions, Data and Models across Scales  

E-Print Network [OSTI]

D. Land availability for biofuel production. Environ. Sci.of land available for biofuel production. Environ. Sci.so marginal land for biofuel crops is limited. Energy Policy

Lewis, Sarah M

2014-01-01T23:59:59.000Z

500

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