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1

Relating horsepower to drilling productivity  

SciTech Connect (OSTI)

Many technological advancements have been made in explosive products and applications over the last 15 years resulting in productivity and cost gains. However, the application of total energy (engine horsepower) in the majority of rotary drilling technology, has remained virtually unchanged over that period. While advancements have been made in components, efficiency, and types of hydraulic systems used on drills, the application of current hydraulic technology to improve drilling productivity has not been interactive with end users. This paper will investigate how traditional design assumptions, regarding typical application of horsepower in current rotary drill systems, can actually limit productivity. It will be demonstrated by numeric analysis how changing the partitioning of available hydraulic energy can optimize rotary drill productivity in certain conditions. Through cooperative design ventures with drill manufacturers, increased penetration rates ranging from 20% to 100% have been achieved. Productivity was increased initially on some rigs by careful selection of optional hydraulic equipment. Additional gains were made in drilling rates by designing the rotary hydraulic circuit to meet the drilling energies predicted by computer modeling.

Givens, R.; Williams, G.; Wingfield, B.

1996-12-31T23:59:59.000Z

2

Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

Hybrid Electric Hybrid Electric Horsepower for Kentucky Schools to someone by E-mail Share Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky Schools on Facebook Tweet about Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky Schools on Twitter Bookmark Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky Schools on Google Bookmark Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky Schools on Delicious Rank Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky Schools on Digg Find More places to share Alternative Fuels Data Center: Hybrid Electric Horsepower for Kentucky Schools on AddThis.com... April 7, 2011 Hybrid Electric Horsepower for Kentucky Schools " The hybrid school bus project not only serves as a means to improve

3

Retrofit of existing 400 horsepower air compressor motor with steam turbine  

SciTech Connect (OSTI)

This paper is on the completion of a retrofit project to replace an existing 400 Horsepower air compressor motor with a steam turbine. The discussion includes visuals to show the process involved in carrying out this project. There will be in three parts. The first part of the presentation will cover the planning and construction. Planning included defining a scope, collecting data to support this scope, determining engineering feasibility, and calculating an economic payback. Construction will include the preparations for the retrofit including details of upgrades to existing systems and components, and installation of new systems and components. This will be followed by details on the actual removal of the motor, installation of the turbine, and the revision of the controls. Startup of the air compressor on steam is then discussed including necessary preparation of steam systems. Next to be presented will be some of the problems and their solutions experienced during this project. Specifically discussed will be regulatory concerns, noise of operation, insurance, and fluctuations in plant process steam demand. The conclusion of the presentation will focus on present operating status, savings demonstrated, and maintenance required.

Sanders, S.F.

1997-06-01T23:59:59.000Z

4

Nuclear Fusion Introduced  

Science Journals Connector (OSTI)

... introduce undergraduates to the present state of science, but it is difficult to see how Nuclear Fusion can be recommended to grammar school pupils or even to first-year undergraduates. The ...

DAPHNE F. JACKSON

1970-01-31T23:59:59.000Z

5

Fractional Electromagnetic Waves  

E-Print Network [OSTI]

In the present work we consider the electromagnetic wave equation in terms of the fractional derivative of the Caputo type. The order of the derivative being considered is 0 <\\gamma<1. A new parameter \\sigma, is introduced which characterizes the existence of the fractional components in the system. We analyze the fractional derivative with respect to time and space, for \\gamma = 1 and \\gamma = 1/2 cases.

J. F. Gómez; J. J. Rosales; J. J. Bernal; V. I. Tkach; M. Guía

2011-08-31T23:59:59.000Z

6

G. Cuniberti Introducing  

E-Print Network [OSTI]

undergraduate or novice postgraduate. This single book comprises the basic knowledge of both theory and experiment underpinn- ing this rapidly growing field. Concepts and techniques such as density functional theory and charge transport, break junctions and scanning probe microscopy are introduced step

Cuniberti, Gianaurelio

7

Introducing Fraunhofer Personal reflection  

E-Print Network [OSTI]

­ they are not part of the University. The Centres form an integral part of that country's innovation system while for Sustainable Energy Systems. The Fraunhofer model is certainly applicable to the UK (the Fraunhofer modelIntroducing Fraunhofer Personal reflection I have taken a keen interest in Fraunhofer Geselleschaft

Mottram, Nigel

8

Introducing BEST PRACTICE GUIDANCE  

E-Print Network [OSTI]

placement 6. Application of sewage sludges and composts 7. Fertiliser application in land regeneration 8Introducing BEST PRACTICE GUIDANCE FOR LAND REGENERATION Best Practice Guidance for Land of brownfield land for woodland and urban greening after uses. The Notes are devised for practitioners and all

9

Introducing the DOE Sustainability Dashboard  

Broader source: Energy.gov [DOE]

Please join us as we introduce DOE's new Sustainability Dashboard. This webinar will provide an overview and demonstration of the new Dashboard and offer an opportunity for questions.

10

Combined Delta-Nabla Sum Operator in Discrete Fractional Calculus  

E-Print Network [OSTI]

We introduce a more general discrete fractional operator, given by convex linear combination of the delta and nabla fractional sums. Fundamental properties of the new fractional operator are proved. As particular cases, results on delta and nabla discrete fractional calculus are obtained.

Bastos, Nuno R O

2010-01-01T23:59:59.000Z

11

Fractional Zaslavsky and Henon Discrete Maps  

E-Print Network [OSTI]

This paper is devoted to the memory of Professor George M. Zaslavsky passed away on November 25, 2008. In the field of discrete maps, George M. Zaslavsky introduced a dissipative standard map which is called now the Zaslavsky map. G. Zaslavsky initialized many fundamental concepts and ideas in the fractional dynamics and kinetics. In this paper, starting from kicked damped equations with derivatives of non-integer orders we derive a fractional generalization of discrete maps. These fractional maps are generalizations of the Zaslavsky map and the Henon map. The main property of the fractional differential equations and the correspondent fractional maps is a long-term memory and dissipation. The memory is realized by the fact that their present state evolution depends on all past states with special forms of weights.

Vasily E. Tarasov

2011-07-26T23:59:59.000Z

12

ARM - Measurement - Cloud fraction  

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

to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud fraction Fraction of sky covered by clouds, observed directly or derived from SW...

13

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

14

2013 Introduce a Girl to Engineering Day | Argonne National Laboratory  

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

Introduce a Girl to Engineering Day Introduce a Girl to Engineering Day Introduce a Girl to Engineering Day 2013 1 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 1 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 2 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 3 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 4 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 5 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 6 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 7 of 26 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013

15

Introducing: Project Open Data | Data.gov  

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

Introducing: Project Open Data Introducing: Project Open Data Developer Data Web Services Source Code Challenges Semantic Web Blogs Let's Talk Developers You are here Data.gov » Communities » Developers » Blogs Introducing: Project Open Data Submitted by Anonymous on Tue, 05/21/2013 - 12:13pm Log in to vote 1 Originally posted on the White House blog by Todd Park and Steven VanRoekel on May 16, 2013 at 09:46 AM EDT Technology evolves rapidly, and it can be challenging for policy and its implementation to evolve at the same pace. Last week, President Obama launched the Administration's new Open Data Policy and Executive Order aimed at ensuring that data released by the government will be as accessible and useful as possible. To make sure this tech-focused policy can keep up with the speed of innovation, we created Project Open Data.

16

Fractions continues Michel Waldschmidt  

E-Print Network [OSTI]

´erentes oeuvres d'art, 2 appara^it aussi dans des oeuvres artistiques persanes. 2 #12;Figure 1. Fraction continue

Waldschmidt, Michel

17

Lab 12: Measurements Lab This lab introduces . . .  

E-Print Network [OSTI]

Lab 12: Measurements Lab Objectives This lab introduces . . . Materials 1) 2 Liter Bottle 2) Bicycle Pump 3) Rocket Fins 4) Water 5) Scale 6) Angle thingie Theory What is a Measurement? A measurement tells us about a quantity of something. For example, a measurement can inform us about how heavy

Wedeward, Kevin

18

Introducing Research College of Oceanic & Atmospheric Sciences  

E-Print Network [OSTI]

WECOMA Coll ege of Oceanic & Atmospheric Scie nces OREGON STATE UNIVERSITY in the O cean currents introduced by man (e.g., pollutants). Knowledge of upper-ocean currents is important for navigation and for search and rescue. The ocean currents off Oregon vary seasonally and can also vary from year to year

Barth, Jack

19

Introducing a fresh approach to health care.  

E-Print Network [OSTI]

Introducing a fresh approach to health care. Healthy Blue HSA MEMBER GUIDE #12;fresh {fresh Blue Shield of Michigan to provide health care spending account administration services. An independent the things that are working in health care and combine them under one comprehensive health plan. A Blues

20

Introducing Challenger | Argonne Leadership Computing Facility  

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

Introducing Challenger Quick Reference Guide System Overview Data Transfer Data Storage & File Systems Compiling and Linking Queueing and Running Jobs Debugging and Profiling Performance Tools and APIs IBM References Software and Libraries Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] Introducing Challenger The Blue Gene/P resource, Challenger, is the new home for the prod-devel job submission queue. Moving the prod-devel queue to Challenger clears the way for more capability jobs on Intrepid. Challenger shares the same environment as Intrepid and is intended for small, short, interactive debugging and test runs. Production jobs are not

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Method for introducing unidirectional nested deletions  

DOE Patents [OSTI]

Disclosed is a method for the introduction of unidirectional deletions in a cloned DNA segment in the context of a cloning vector which contains an f1 endonuclease recognition sequence adjacent to the insertion site of the DNA segment. Also disclosed is a method for producing single-stranded DNA probes utilizing the same cloning vector. An optimal vector, PZIP is described. Methods for introducing unidirectional deletions into a terminal location of a cloned DNA sequence which is inserted into the vector of the present invention are also disclosed. These methods are useful for introducing deletions into either or both ends of a cloned DNA insert, for high throughput sequencing of any DNA of interest.

Dunn, John J. (Bellport, NY); Quesada, Mark A. (Horseheads, NY); Randesi, Matthew (New York, NY)

2001-01-01T23:59:59.000Z

22

Introducing a PMO in XYZ Company  

E-Print Network [OSTI]

Engineering Management Field Project Introducing a PMO In XYZ Company By Ahmed Alqahtani Master of Science The University of Kansas Fall Semester, 2013 An EMGT Field Project report submitted to the Engineering Management Program... and their competency levels. Therefore, a project manager competency advancement methodology is needed. Before getting into potential approaches for developing the competency of project managers, it is important to understand the meaning of a project manager...

Alqahtani, Ahmed

2013-12-20T23:59:59.000Z

23

A discrete fractional random transform  

E-Print Network [OSTI]

We propose a discrete fractional random transform based on a generalization of the discrete fractional Fourier transform with an intrinsic randomness. Such discrete fractional random transform inheres excellent mathematical properties of the fractional Fourier transform along with some fantastic features of its own. As a primary application, the discrete fractional random transform has been used for image encryption and decryption.

Zhengjun Liu; Haifa Zhao; Shutian Liu

2006-05-20T23:59:59.000Z

24

Fractional vortices and lumps  

SciTech Connect (OSTI)

We study what might be called fractional vortices, vortex configurations with the minimum winding from the viewpoint of their topological stability, but which are characterized by various notable substructures in the transverse energy distribution. The fractional vortices occur in diverse Abelian or non-Abelian generalizations of the Higgs model. The global and local features characterizing these are studied, and we identify the two crucial ingredients for their occurrence--the vacuum degeneracy leading to nontrivial vacuum moduli M, and the BPS nature of the vortices. Fractional vortices are further classified into two kinds. The first type of such vortices appear when M has orbifold Z{sub n} singularities; the second type occurs in systems in which the vacuum moduli space M possesses either a deformed geometry or some singularity. These general features are illustrated with several concrete models.

Eto, Minoru; Gudnason, Sven Bjarke; Konishi, Kenichi [Department of Physics, University of Pisa, Largo Pontecorvo, 3, Building C, 56127 Pisa (Italy); INFN, Sezione di Pisa, Largo Pontecorvo, 3, Ed. C, 56127 Pisa (Italy); Fujimori, Toshiaki; Nagashima, Takayuki [Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551 (Japan); Nitta, Muneto [Department of Physics, Keio University, Hiyoshi, Yokohama, Kanagawa 223-8521 (Japan); Ohashi, Keisuke [Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA (United Kingdom); Vinci, Walter [Department of Physics, University of Pisa, Largo Pontecorvo, 3, Building C, 56127 Pisa (Italy); INFN, Sezione di Pisa, Largo Pontecorvo, 3, Ed. C, 56127 Pisa (Italy); Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, CB3 0WA (United Kingdom)

2009-08-15T23:59:59.000Z

25

Fractional Standard Map  

E-Print Network [OSTI]

Properties of the phase space of the standard map with memory are investigated. This map was obtained from a kicked fractional differential equation. Depending on the value of the parameter of the map and the fractional order of the derivative in the original differential equation this nonlinear dynamical system demonstrates attractors (fixed points, stables periodic trajectories, slow converging and slow diverging trajectories, ballistic trajectories, and fractal-like structures) and/or chaotic trajectories. At least one type of fractal-like sticky attractors in the chaotic sea was observed.

Mark Edelman; Vasily E. Tarasov

2009-11-24T23:59:59.000Z

26

Introduce a Girl to Engineering Day 2013 | Argonne National Laboratory  

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

Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 Introduce a Girl to Engineering Day 2013 1 of 26 Introduce a Girl to Engineering Day 2013 Students at Argonne's 2013 Introduce a Girl to Engineering Day. At the event, middle-schoolers meet Argonne women scientists and engineers and do science experiments. For more information, visit Argonne's Educational Programs website. Introduce a Girl to Engineering Day 2013 1 of 26 Introduce a Girl to Engineering Day 2013 Students at Argonne's 2013 Introduce a Girl to Engineering Day. At the event, middle-schoolers meet Argonne women scientists and engineers and do science experiments. For more information, visit Argonne's Educational Programs website. Introduce a Girl to Engineering Day 2013 2 of 26 Introduce a Girl to Engineering Day 2013

27

A Matlab toolbox for fractional relaxation-oscillation equations  

E-Print Network [OSTI]

Stress relaxation and oscillation damping of complex viscoelastic media often manifest history- and path-dependent physical behaviors and cannot accurately be described by the classical models. Recent research found that fractional derivative models can characterize such complex relaxation and damping. However, to our best knowledge, easy-to-use numerical software is not available for fractional relaxation-oscillation (FRO) equations. This paper is to introduce an open source free Matlab toolbox which we developed in recent years for numerical solution of the FRO equations. This FRO toolbox uses the predictor-corrector approach for the discretization of time fractional derivative, and non-expert users can accurately solve fractional relaxation-oscillation equations via a friendly graphical user interface. Compared with experimental data, our numerical experiments show that the FRO toolbox is highly efficient and accurate to simulate viscoelastic stress relaxation and damped vibration. This free toolbox will help promote the research and practical use of fractional relaxation-oscillation equations.

Song Wei; Wen Chen

2013-02-14T23:59:59.000Z

28

Hydrolysis and fractionation of lignocellulosic biomass  

DOE Patents [OSTI]

A multi-function process is described for the hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components such as extractives and proteins; a portion of the solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising one or more of the following: optionally, as function 1, introducing a dilute acid of pH 1.0-5.0 into a continual shrinking bed reactor containing a lignocellulosic biomass material at a temperature of about 94 to about 160.degree. C. for a period of about 10 to about 120 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of extractives, lignin, and protein by keeping the solid to liquid ratio constant throughout the solubilization process; as function 2, introducing a dilute acid of pH 1.0-5.0, either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing either fresh biomass or the partially fractionated lignocellulosic biomass material from function 1 at a temperature of about 94-220.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of hemicellulosic sugars, semisoluble sugars and other compounds, and amorphous glucans by keeping the solid to liquid ratio constant throughout the solubilization process; as function 3, optionally, introducing a dilute acid of pH 1.0-5.0 either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing the partially fractionated lignocellulosic biomass material from function 2 at a temperature of about 180-280.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of 1 to about 5 reactor volumes to effect solubilization of cellulosic sugars by keeping the solid to liquid ratio constant throughout the solubilization process; and as function 4, optionally, introducing a dilute acid of pH 1.0-5.0 either as virgin acid or an acidic stream from another function, into a continual shrinking bed reactor containing the partially fractionated lignocellulosic biomass material from function 3 at a temperature of about 180-280.degree. C. for a period of about 10 to about 60 minutes at a volumetric flow rate of about 1 to about 5 reactor volumes to effect solubilization of cellulosic sugars by keeping the solid to liquid ratio constant throughout the solubilization process.

Torget, Robert W. (Littleton, CO); Padukone, Nandan (Denver, CO); Hatzis, Christos (Denver, CO); Wyman, Charles E. (Lakewood, CO)

2000-01-01T23:59:59.000Z

29

Solvent Fractionation of Lignin  

SciTech Connect (OSTI)

Lignin is a highly abundant source of renewable carbon that can be considered as a valuable sustainable source of biobased materials. The major issues for the commercial production of value added high performance lignin products are lignin s physical and chemical heterogenities. To overcome these problems, a variety of procedures have been developed to produce pure lignin suitable for high performace applications such as lignin-derived carbon materials. However, most of the isolation procedures affect lignin s properties and structure. In this chapter, a short review of the effect of solvent fractionation on lignin s properties and structure is presented.

Chatterjee, Sabornie [ORNL; Saito, Tomonori [ORNL

2014-01-01T23:59:59.000Z

30

Uncertainties in Energy Consumption Introduced by Building Operations and  

E-Print Network [OSTI]

Uncertainties in Energy Consumption Introduced by Building Operations and Weather for a Medium between predicted and actual building energy consumption can be attributed to uncertainties introduced in energy consumption due to actual weather and building operational practices, using a simulation

31

Introducing Impact Analysis for Architectural Decisions Matthias Riebisch, Sven Wohlfarth  

E-Print Network [OSTI]

methods of Decision Theory to perform such decisions in a rational way. This paper introduces a method Ar- chitecture, Impact Analysis, Decision Theory 1. Introduction The complexity of softwareIntroducing Impact Analysis for Architectural Decisions Matthias Riebisch, Sven Wohlfarth

Riebisch, Matthias

32

Characterizations of K-Functionals Built from Fractional Powers of Infinitesimal Generators of Semigroups  

Science Journals Connector (OSTI)

Abstract. On a Banach space X consider an equibounded (C_0)-semigroup of linear operators { T(t): t ? 0} with infinitesimal generator A . We introduce fractional powers (-A) ...

Trebels; Westphal

2003-03-01T23:59:59.000Z

33

Incompressible Stars and Fractional Derivatives  

E-Print Network [OSTI]

Fractional calculus is an effective tool in incorporating the effects of non-locality and memory into physical models. In this regard, successful applications exist rang- ing from signal processing to anomalous diffusion and quantum mechanics. In this paper we investigate the fractional versions of the stellar structure equations for non radiating spherical objects. Using incompressible fluids as a comparison, we develop models for constant density Newtonian objects with fractional mass distributions or stress conditions. To better understand the fractional effects, we discuss effective values for the density, gravitational field and equation of state. The fractional ob- jects are smaller and less massive than integer models. The fractional parameters are related to a polytropic index for the models considered.

S. S. Bayin; J. P. Krisch

2014-08-21T23:59:59.000Z

34

symposium summary: Introduced conifer invasions in South America: an update  

E-Print Network [OSTI]

conifer invasions in South America: short fuse burning?of introduced conifers in South America: Lessons from otherconifer invasions in South America: an update One-day

2010-01-01T23:59:59.000Z

35

COMMERCIAL SNF ACCIDENT RELEASE FRACTIONS  

SciTech Connect (OSTI)

The purpose of this design analysis is to specify and document the total and respirable fractions for radioactive materials that are released from an accident event at the Monitored Geologic Repository (MGR) involving commercial spent nuclear fuel (CSNF) in a dry environment. The total and respirable release fractions will be used to support the preclosure licensing basis for the MGR. The total release fraction is defined as the fraction of total CSNF assembly inventory, typically expressed as an activity inventory (e.g., curies), of a given radionuclide that is released to the environment from a waste form. The radionuclides are released from the inside of breached fuel rods (or pins) and from the detachment of radioactive material (crud) from the outside surfaces of fuel rods and other components of fuel assemblies. The total release fraction accounts for several mechanisms that tend to retain, retard, or diminish the amount of radionuclides that are available for transport to dose receptors or otherwise can be shown to reduce exposure of receptors to radiological releases. The total release fraction includes a fraction of airborne material that is respirable and could result in inhalation doses. This subset of the total release fraction is referred to as the respirable release fraction. Potential accidents may involve waste forms that are characterized as either bare (unconfined) fuel assemblies or confined fuel assemblies. The confined CSNF assemblies at the MGR are contained in shipping casks, canisters, or disposal containers (waste packages). In contrast to the bare fuel assemblies, the container that confines the fuel assemblies has the potential of providing an additional barrier for diminishing the total release fraction should the fuel rod cladding breach during an accident. However, this analysis will not take credit for this additional bamer and will establish only the total release fractions for bare unconfined CSNF assemblies, which may however be conservatively applied to confined CSNF assemblies.

S.O. Bader

1999-10-18T23:59:59.000Z

36

Sedimentation Field Flow Fractionation: Applications  

Science Journals Connector (OSTI)

...FIELD-FLOW FRACTIONATION OF ALKALI-LIBERATED NUCLEAR POLYHEDROSIS-VIRUS FROM GYPSY-MOTH...FRACTIONATION TO RADIOACTIVE-WASTE DISPOSAL, NUCLEAR TECHNOLOGY 51 : 147 ( 1980 ). SOBER...perThe SFFF separation in Fig. 9a was ic dispersant moarbitrarily concluded shortly after...

J. J. Kirkland; W. W. Yau

1982-10-08T23:59:59.000Z

37

Introducing Back-up to Active Compressor Surge Control System  

E-Print Network [OSTI]

in a system with increased performance by taking advantage of both systems. Keywords: centrifugal compressorIntroducing Back-up to Active Compressor Surge Control System Nur Uddin Jan Tommy Gravdahl for introducing a back-up system to an active compressor surge control system is presented in this paper. Active

Gravdahl, Jan Tommy

38

Upgrading petroleum and petroleum fractions  

SciTech Connect (OSTI)

A method is described for neutralizing the organic naphthenic acids acidity present in petroleum and petroleum fractions to produce a neutralization number less than 1.0 whereby they are rendered suitable as lube oil feed stocks which consists essentially of treating the petroleum and petroleum fractions with a neutralizing amount of monoethanolamine to form an amine salt with the organic acids and then heating the thus-neutralized petroleum and petroleum fractions at a temperature at least about 25/sup 0/F greater than the boiling point of water and for a time sufficient to convert the amine salts to amides.

Ferguson, S.; Reese, D.D.

1988-06-21T23:59:59.000Z

39

Fractional-slot PM motors for electric power steering systems  

Science Journals Connector (OSTI)

This paper deals with some considerations about a PM motor with fractional number of slot per pole per phase, adopted for an electric power steering system. The key requirements of such a system, such as efficiency, torque ripple, fault tolerance, weight and cost, are considered and discussed. The possibility to design the motor in different forms is investigated, introducing some criteria to evaluate the convenience of using non-overlapping winding.

N. Bianchi; S. Bolognani

2004-01-01T23:59:59.000Z

40

Commercial SNF Accident Release Fractions  

SciTech Connect (OSTI)

The purpose of this analysis is to specify and document the total and respirable fractions for radioactive materials that could be potentially released from an accident at the repository involving commercial spent nuclear fuel (SNF) in a dry environment. The total and respirable release fractions are used to support the preclosure licensing basis for the repository. The total release fraction is defined as the fraction of total commercial SNF assembly inventory, typically expressed as an activity inventory (e.g., curies), of a given radionuclide that is released to the environment from a waste form. Radionuclides are released from the inside of breached fuel rods (or pins) and from the detachment of radioactive material (crud) from the outside surfaces of fuel rods and other components of fuel assemblies. The total release fraction accounts for several mechanisms that tend to retain, retard, or diminish the amount of radionuclides that are available for transport to dose receptors or otherwise can be shown to reduce exposure of receptors to radiological releases. The total release fraction includes a fraction of airborne material that is respirable and could result in inhalation doses; this subset of the total release fraction is referred to as the respirable release fraction. Accidents may involve waste forms characterized as: (1) bare unconfined intact fuel assemblies, (2) confined intact fuel assemblies, or (3) canistered failed commercial SNF. Confined intact commercial SNF assemblies at the repository are contained in shipping casks, canisters, or waste packages. Four categories of failed commercial SNF are identified: (1) mechanically and cladding-penetration damaged commercial SNF, (2) consolidated/reconstituted assemblies, (3) fuel rods, pieces, and debris, and (4) nonfuel components. It is assumed that failed commercial SNF is placed into waste packages with a mesh screen at each end (CRWMS M&O 1999). In contrast to bare unconfined fuel assemblies, the container that confines the fuel assemblies could provide an additional barrier for diminishing the total release fraction should the fuel rod cladding breach during an accident. This analysis, however, does not take credit for the additional barrier and establishes only the total release fractions for bare unconfined intact commercial SNF assemblies, which may be conservatively applied to confined intact commercial I SNF assemblies.

J. Schulz

2004-11-05T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Argonne program introduces girls to engineering | Argonne National...  

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

to engineering February 21, 2014 Tweet EmailPrint The U.S. Department of Energy's Argonne National Laboratory hosted its annual Introduce a Girl to Engineering Day Thursday,...

42

Introducing Concurrency in CS 1 Kim B. Bruce  

E-Print Network [OSTI]

Introducing Concurrency in CS 1 Kim B. Bruce Department of Computer Science Pomona College Computer Architecture Re- search", held in December of 2005, identified four grand chal- lenges. One

Danyluk, Andrea Pohoreckyj

43

Introducing the Minorities in Energy Initiative | Department of Energy  

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

Introducing the Minorities in Energy Initiative Introducing the Minorities in Energy Initiative Introducing the Minorities in Energy Initiative September 25, 2013 - 11:31am Addthis Watch scenes from the Minorities in Energy Initiative, and hear remarks from Energy Secretary Ernest Moniz, in the video above. | Video by Matty Greene. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs LEARN MORE More on the new Minorities in Energy Initiative via the Office of Economic Impact and Diversity blog. View President Obama's Hispanic Heritage Month Proclamation. For the United States to stay competitive in the global clean energy economy and effectively address the challenges of climate change, we need to draw upon all the talent available in this country. That's the key motivation behind the Minorities in Energy Initiative, a

44

Introducing The National Library of Energy (Beta), New Search Engine  

Office of Scientific and Technical Information (OSTI)

Introducing The National Library of Energy (Beta), New Search Engine Introducing The National Library of Energy (Beta), New Search Engine Facilitating Access to Department of Energy Information February 15, 2013 Introducing The National Library of Energy (Beta), New Search Engine Facilitating Access to Department of Energy Information The Department of Energy (DOE) Office of Scientific and Technical Information (OSTI) has launched the National Library of Energy (NLE), a virtual library and open government resource to advance energy literacy, innovation and security. The NLE search feature provides one-stop, easy access to information about DOE and its work in four broad mission areas - science and R&D results; energy and technology for industry and homeowners; energy market information and analysis; and nuclear security and environmental

45

Making STEM Personal: Introducing the Women @ Energy Series | Department of  

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

STEM Personal: Introducing the Women @ Energy Series STEM Personal: Introducing the Women @ Energy Series Making STEM Personal: Introducing the Women @ Energy Series March 18, 2013 - 11:53am Addthis Graphic by Sarah Gerrity. Graphic by Sarah Gerrity. Dot Harris Dot Harris The Honorable Dot Harris, Director, Office of Economic Impact and Diversity Check Us Out on Pinterest Get inspired! Check out our Women @ Energy Pinboard . Occupations in Science, Technology, Engineering and Mathematics (STEM) are among the fastest growing job sectors - offering top paying positions and a host of opportunities. On top of all that, STEM jobs are passports to changing the world through innovation and discovery. In celebration of Women's History Month, we're launching a new feature

46

Introducing the Department of Energy Quadrennial Technology Review |  

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

Introducing the Department of Energy Quadrennial Technology Review Introducing the Department of Energy Quadrennial Technology Review Introducing the Department of Energy Quadrennial Technology Review April 7, 2011 - 4:33pm Addthis Former Under Secretary Koonin Former Under Secretary Koonin Director - NYU's Center for Urban Science & Progress and Former Under Secretary for Science Recently, Secretary Chu asked me to kick off a new process at the Department of Energy: a Quadrennial Technology Review (DOE-QTR). The goal of the DOE-QTR is to establish a context and robust framework for the Department's energy technology activities, including principles we can use to establish multi-year program plans. It will also offer high-level views of the technical status and potential of various energy technologies. Multi-year program plans would allow us to provide the

47

Continued Fraction Expansion Approaches to Discretizing Fractional Order Derivatives—an Expository Review  

Science Journals Connector (OSTI)

This paper attempts to present an expository review of continued fraction expansion (CFE) based discretization schemes for fractional order differentiators...

Yangquan Chen; Blas M. Vinagre; Igor Podlubny

2004-12-01T23:59:59.000Z

48

Introducing Chaos in Economic Gas-like Models  

E-Print Network [OSTI]

This paper considers ideal gas-like models of trading markets, where each agent is identified as a gas molecule that interacts with others trading in elastic or money-conservative collisions. Traditionally, these models introduce different rules of random selection and exchange between pair agents. Unlike these traditional models, this work introduces a chaotic procedure able of breaking the pairing symmetry of agents (i,j)->(j,i). Its results show that, the asymptotic money distributions of a market under chaotic evolution can exhibit a transition from Gibbs to Pareto distributions, as the pairing symmetry is progressively broken.

C. Pellicer-Lostao; R. Lopez-Ruiz

2009-04-02T23:59:59.000Z

49

THE EGYPT LABOR MARKET PANEL SURVEY: INTRODUCING THE 2012 ROUND  

E-Print Network [OSTI]

#12;THE EGYPT LABOR MARKET PANEL SURVEY: INTRODUCING THE 2012 ROUND Ragui Assaad and Caroline Egypt www.erf.org.eg Copyright © The Economic Research Forum, 2013 All rights reserved. No part our data to other statistical sources for Egypt to evaluate the representativeness of the sample

Levinson, David M.

50

NEC Introduces New miSEAT TSS Technology Collaboration  

E-Print Network [OSTI]

NEC Introduces New miSEAT TSS Technology Collaboration Social aspects keep people collaborative way. All of the touch technology is completely embedded in the surface featuring a full standard #12;Benefits: CLEAN UP - Much more easily cleaned than standard keyboard/mouse setups, germ free

Goldstein, Seth Copen

51

Wood Density and Growth Conifers Introduced to Hawaii  

E-Print Network [OSTI]

Wood Density and Growth of Some Conifers Introduced to Hawaii Roger G. Skolmen U . S . F O R E - Berkeley, California Forest Service - U. S. Department of Agriculture #12;Skolmen, Roger G. 1963. Wood Expt. Sta. 20 pp., illus. (U.S. Forest Serv. Res Paper PSW-12) The specific gravity of the wood of 14

Standiford, Richard B.

52

Briefing Paper Should we introduce a (temporary) wealth tax?  

E-Print Network [OSTI]

people in this country have been able to pay less tax than the people who clean for them." He reformed Capital Gains Tax to some extent to tackle this issue but much more significant reform would be needed options are there for wealth tax reform? The Liberal Democrats are currently proposing to introduce

Birmingham, University of

53

Unit 10: Software Quality To introduce software quality management and  

E-Print Network [OSTI]

. ¥ ISO 9001 Quality Systems - Model for Quality Assurance in Design/Development, Production, Installation intervals by management to ensure its continuing suitability, effectiveness and conformance with ISO 9001 with particular reference to the requirements of ISO 9000 and associated standards. Ð To introduce QFD

Finkelstein, Anthony

54

Does help help? Introducing the Bayesian Evaluation and Assessment methodology  

E-Print Network [OSTI]

Does help help? Introducing the Bayesian Evaluation and Assessment methodology Joseph E. Beck1--and how--help helps students has not been a well studied problem in the ITS community. In this paper we present three approaches for evaluating the efficacy of the Reading Tutor's help: creating experimental

Mostow, Jack

55

Introducing Energy Performances in Production Management: Towards Energy Efficient Manufacturing  

E-Print Network [OSTI]

Introducing Energy Performances in Production Management: Towards Energy Efficient Manufacturing.taisch}@polimi.it Abstract. Energy consumption is one of the main economic, environmental and societal issues. As stated by recent researches, manufacturing plays a major role in energy consumption. To react to this situation

Boyer, Edmond

56

RESEARCH Open Access Introducing the Forensic Research/Reference on  

E-Print Network [OSTI]

RESEARCH Open Access Introducing the Forensic Research/Reference on Genetics knowledge base, FROG used in forensic teaching, research, and investigations. The Fst value of each CODIS marker tends identification and description. However, online tools and databases that can be used for forensic research

Kidd, Kenneth

57

A liquid of fractional charges  

Science Journals Connector (OSTI)

... understanding. The first, the integral quantum Hall effect, has found practical application as a resistance standard as well as giving an improved value for the fine-structure constant a, ... value for the fine-structure constant a, a fundamental constant that describes the coupling of elementary particles to electromagnetic fields. The second, the fractional quantum Hall effect, manifests itself ...

Gerhard Fasol

1988-08-18T23:59:59.000Z

58

Nikola Tesla  

Science Journals Connector (OSTI)

...Advantages of Polyphase Power The polyphase induction...speed and considerable power. Its insulation and windings were simpler...from fractional horse-power to the 83,000-horsepower...the motor. The Niagara plant helped prove, however...

Kenneth M. Swezey

1958-05-16T23:59:59.000Z

59

Introducing FRED, Enabling Unique Visualization and Manipulation of Energy  

Open Energy Info (EERE)

Introducing FRED, Enabling Unique Visualization and Manipulation of Energy Introducing FRED, Enabling Unique Visualization and Manipulation of Energy Data at Multiple Scales Home > Groups > OpenEI Community Central Sfederspiel's picture Submitted by Sfederspiel(5) Member 20 May, 2013 - 13:28 FRED Free Energy Data Map OpenEI Tool Visualization The U.S. Department of Energy, the Pacific Northwest National Laboratory, and the Planetary Skin Institute recently released a new open platform hosted by OpenEI which enables state and local governments, agencies, corporations, and other energy analysts to effectively visualize energy use data and make energy data more useful for decision-making processes. The Free Energy Data (FRED) platform will contribute to the Energy Data Initiative to make energy data more transparent and adaptable for

60

Listing Unique Fractional Factorial Designs  

E-Print Network [OSTI]

fractional factorial design. The defining contrast subgroup is {I, ABE, BCD, ACDE}. Suppose the 25?2 design is constructed by using defining words {BCD, ABE}. This design, shown in Fig. 4, has the runs {1,4,6,7,9,12,14,15} of Fig. 3. Taking the modulo-2 sum... in generating design catalogs . . . . . . . . . . . 5 I.2.1. Computational issues . . . . . . . . . . . . . . 5 I.2.2. Complicated designs . . . . . . . . . . . . . . 6 I.3. Research objectives and contributions . . . . . . . . . . 8 I.4. Organization...

Shrivastava, Abhishek Kumar

2011-02-22T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Understanding fractional equivalence and the differentiated effects on operations with fractions  

E-Print Network [OSTI]

This study compared two representations for teaching fraction equivalence. It traced the implications of both representations on the student?s comprehension of fractions as well as their ability to perform operations with fractions...

Naiser, Emilie Ann

2005-02-17T23:59:59.000Z

62

Introducing sustainability assessment and selection (SAS) into chemical engineering education  

Science Journals Connector (OSTI)

Assessment of a sustainable process design centres on the three pillars of sustainability. However, satisfying all criteria is sometimes difficult. Nevertheless, it is important to have an effective and systematic tool for a concrete and justifiable decision. Introduction of such tool into chemical engineering education would be beneficial as students will encounter situations in making decision which may imply deciding on the best process design, suppliers, supply chain, etc. In light of this matter, we introduce a concept called sustainability assessment and selection (SAS) into Computer Aided Plant Design (CAPD) course at Technical University of Berlin. The idea of the methodology is to assess process designs and select one which is most sustainable. Within the framework of this course, a 1-day lecture has been conducted that touch on the methods to assess sustainable process design. It is also aimed to introduce systematic multi-criteria decision making methodology called analytic hierarchy process (AHP). A practical example in choosing n-butane isomerization process designs is illustrated. From the class evaluation we found that the response towards the idea was very promising. We believed the method would add an extra edge to the students especially in performing sustainability assessment and systematically solving multi optional problems that they may encounter in their career.

M.R. Othman; L. Hady; J.-U. Repke; G. Wozny

2012-01-01T23:59:59.000Z

63

Coal fractionation by density for coking purposes  

Science Journals Connector (OSTI)

Scarce coal with good coking properties may be obtained by separating less valuable coal into different density fractions. The use of valuable fractions released in enrichment ensures optimal coking-batch composi...

S. G. Gagarin

2010-09-01T23:59:59.000Z

64

Respiration, photosynthesis, and oxygen isotope fractionation in ...  

Science Journals Connector (OSTI)

Jan 25, 1971 ... Respiration, photosynthesis, and oxygen isotope fractionation in oceanic surface water1. Peter M. Kroopnick. Department of Oceanography,.

2000-01-04T23:59:59.000Z

65

Introducing a More Responsive Energy.gov | Department of Energy  

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

a More Responsive Energy.gov a More Responsive Energy.gov Introducing a More Responsive Energy.gov November 12, 2013 - 9:56am Addthis Energy.gov now provides a browsing experience tailored to the device you're using. Energy.gov now provides a browsing experience tailored to the device you're using. Rob Roberts Rob Roberts Director of Digital Strategy What does this mean for me? Energy.gov is now optimized to provide a better browsing experience for mobile environments, like tablets and smartphones. We've also made improvements to our database of tax credits, rebates and savings and increased the visibility of our popular Energy Saver content. Leave a comment about Energy.gov and how we can continue to improve. You may have noticed some changes to Energy.gov today, especially if you're looking at our site on a smartphone or a tablet. Over the weekend, we

66

Fractional-calculus model for temperature and pressure waves in fluid-saturated porous rocks  

Science Journals Connector (OSTI)

We study a fractional time derivative generalization of a previous Natale-Salusti model about nonlinear temperature and pressure waves, propagating in fluid-saturated porous rocks. Their analytic solutions, i.e., solitary shock waves characterized by a sharp front, are here generalized, introducing a formalism that allows memory mechanisms. In realistic wave propagation in porous media we must take into account spatial or temporal variability of permeability, diffusivity, and other coefficients due to the system “history.” Such a rock fracturing or fine particulate migration could affect the rock and its pores. We therefore take into account these phenomena by introducing a fractional time derivative to simulate a memory-conserving formalism. We also discuss this generalized model in relation to the theory of dynamic permeability and tortuosity in fluid-saturated porous media. In such a realistic model we obtain exact solutions of Burgers’ equation with time fractional derivatives in the inviscid case.

Roberto Garra

2011-09-26T23:59:59.000Z

67

Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics  

DOE Patents [OSTI]

A multi-function process for hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components comprising extractives and proteins; a portion of a solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising: a) introducing either solid fresh biomass or partially fractioned lignocellulosic biomass material with entrained acid or water into a reactor and heating to a temperature of up to about 185.degree. C.-205.degree. C. b) allowing the reaction to proceed to a point where about 60% of the hemicellulose has been hydrolyzed in the case of water or complete dissolution in case of acid; c) adding a dilute acid liquid at a pH below about 5 at a temperature of up to about 205.degree. C. for a period ranging from about 5 to about 10 minutes; to hydrolyze the remaining 40% of hemicellulose if water is used. d) quenching the reaction at a temperature of up to about 140.degree. C. to quench all degradation and hydrolysis reactions; and e) introducing into said reaction chamber and simultaneously removing from said reaction chamber, a volumetric flow rate of dilute acid at a temperature of up to about 140.degree. C. to wash out the majority of the solubilized biomass components, to obtain improved hemicellosic sugar yields.

Torget, Robert W. (Littleton, CO)

2001-01-01T23:59:59.000Z

68

Isotope/element fractionation during surface adsorption  

Science Journals Connector (OSTI)

The adsorption of ions onto mineral surfaces accompanies isotope/element fractionation in planets and asteroids. A model based on simple classical physics is presented to predict these fractionations. The agreement between the experimentally observed isotope/element ratios and their predicted values is found to be excellent. This fractionation can be demonstrated experimentally in advanced physics laboratories using macroscopic particles. The success of the model shows students that even a very complex naturally occurring process can be explained quantitatively with simple physics.

Gamini Seneviratne; Asiri Nanayakkara

2004-01-01T23:59:59.000Z

69

Accelerator dynamics of a fractional kicked rotor  

E-Print Network [OSTI]

It is shown that the Weyl fractional derivative can quantize an open system. A fractional kicked rotor is studied in the framework of the fractional Schrodinger equation. The system is described by the non-Hermitian Hamiltonian by virtue of the Weyl fractional derivative. Violation of space symmetry leads to acceleration of the orbital momentum. Quantum localization saturates this acceleration, such that the average value of the orbital momentum can be a direct current and the system behaves like a ratchet. The classical counterpart is a nonlinear kicked rotor with absorbing boundary conditions.

A. Iomin

2006-09-14T23:59:59.000Z

70

Nonlinear time-fractional dispersive equations  

E-Print Network [OSTI]

In this paper we study some cases of time-fractional nonlinear dispersive equations (NDEs) involving Caputo derivatives, by means of the invariant subspace method. This method allows to find exact solutions to nonlinear time-fractional partial differential equations by separating variables. We first consider a third order time-fractional NDE that admits a four-dimensional invariant subspace and we find a similarity solution. We also study a fifth order NDE. In this last case we find a solution involving Mittag-Leffler functions. We finally observe that the invariant subspace method permits to find explicit solutions for a wide class of nonlinear dispersive time-fractional equations.

P. Artale Harris; R. Garra

2014-10-29T23:59:59.000Z

71

Mesoscopic Fractional Quantum in Soft Matter  

E-Print Network [OSTI]

Soft matter (e.g., biomaterials, polymers, sediments, oil, emulsions) has become an important bridge between physics and diverse disciplines. Its fundamental physical mechanism, however, is largely obscure. This study made the first attempt to connect fractional Schrodinger equation and soft matter physics under a consistent framework from empirical power scaling to phenomenological kinetics and macromechanics to mesoscopic quantum mechanics. The original contributions are the fractional quantum relationships, which show Levy statistics and fractional Brownian motion are essentially related to momentum and energy, respectively. The fractional quantum underlies fractal mesostructures and many-body interactions of macromolecules in soft matter and is experimentally testable.

W Chen

2005-05-09T23:59:59.000Z

72

Inverse Problems for Fractional Diffusion Equations  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 1.5.3 Derivation of fractional difiusion equations . . . . . . . . . . . 12 1.6 Fractional calculus . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.7 Mittag-Le?er function . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1... point theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Volterra equation of the second kind . . . . . . . . . . . . . . . . . . 6 1.4 Classical difiusion equations . . . . . . . . . . . . . . . . . . . . . . . 6 1.4.1 Derivation...

Zuo, Lihua

2013-06-21T23:59:59.000Z

73

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 2, Appendices  

SciTech Connect (OSTI)

This document contains compiled data from the DOE Handbook on Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear facilities. Source data and example facilities utilized, such as the Plutonium Recovery Facility, are included.

Not Available

1994-12-01T23:59:59.000Z

74

Airborne release fraction -ARF- and respirable fraction -RF- for foot pack cans in fires  

SciTech Connect (OSTI)

The purpose of this analysis is to provide the airborne release fraction (ARF), respirable fraction (RF) and respirable release as a fraction of initial mass for Food Pack Cans (FPCs) containing plutonium powders (e.g., oxide) that become pressurized to the point of bursting in a fire.

CARSON, D.M.

2002-06-05T23:59:59.000Z

75

Fractional and fractal derivatives modeling of turbulence  

E-Print Network [OSTI]

This study makes the first attempt to use the 2/3-order fractional Laplacian modeling of enhanced diffusing movements of random turbulent particle resulting from nonlinear inertial interactions. A combined effect of the inertial interactions and the molecule Brownian diffusivities is found to be the bi-fractal mechanism behind multifractal scaling in the inertial range of scales of moderate Reynolds number turbulence. Accordingly, a stochastic equation is proposed to describe turbulence intermittency. The 2/3-order fractional Laplacian representation is also used to construct a fractional Reynolds equation for nonlinear interactions of fluctuating velocity components, underlying turbulence spacetime fractal structures of Levy 2/3 stable distribution. The new perspective of this study is that the fractional calculus is an effective approach modeling of chaotic fractal phenomena induced by nonlinear interactions.

Wen Chen

2005-11-30T23:59:59.000Z

76

Bio-oil fractionation and condensation  

DOE Patents [OSTI]

A method of fractionating bio-oil vapors which involves providing bio-oil vapors comprising bio-oil constituents is described. The bio-oil vapors are cooled in a first stage which comprises a condenser having passages for the bio-oil separated by a heat conducting wall from passages for a coolant. The coolant in the condenser of the first stage is maintained at a substantially constant temperature, set at a temperature in the range of 75 to 100.degree. C., to condense a first liquid fraction of liquefied bio-oil constituents in the condenser of the first stage. The first liquid fraction of liquified bio-oil constituents from the condenser in the first stage is collected. Also described are steps for subsequently recovering further liquid fractions of liquefied bio-oil constituents. Particular compositions of bio-oil condensation products are also described.

Brown, Robert C; Jones, Samuel T; Pollard, Anthony

2013-07-02T23:59:59.000Z

77

Development of plutonium aerosol fractionation system  

E-Print Network [OSTI]

DEVELOPMENT OF A PLUTONIUM AEROSOL FRACTIONATION SYSTEM A Thesis by MALLA R. MEKALA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August... 1993 Major Subject: Mechanical Engineering DEVELOPMENT OP A PLUTONIUM AEROSOL FRACTIONATION SYSTEM A Thesis by MALLA R. MEKALA Approved as to style and content by: A. R. McFarland (Chair of Committee) N. K. Anand (Mer toer) (', & C. B...

Mekala, Malla R.

1993-01-01T23:59:59.000Z

78

Economic Realities and Energy Efficient Polyphase Integral Horsepower Electric Motors  

E-Print Network [OSTI]

O~. r;I\\I. ~O. 9.65 86.92 Pcrformancc Cur'lt , .l.. Data Obtaincod lrom Ptrfor-naCUI" """ 0 " " 1\\ RaI

Whittington, B. W.

1980-01-01T23:59:59.000Z

79

Impact of variable RBE on proton fractionation  

SciTech Connect (OSTI)

Purpose: To explore the impact of variable proton relative biological effectiveness (RBE) on dose fractionation for clinically relevant situations. A generic RBE = 1.1 is generally used for isoeffect calculations, while experimental studies showed that proton RBE varies with tissue type, dose, and linear energy transfer (LET). Methods: An analytical expression for the LET and {alpha}/{beta} dependence of the linear-quadratic (LQ) model has been used for proton simulations in parallel with the assumption of a generic RBE = 1.1. Calculations have been performed for ranges of LET values and fractionation sensitivities to describe clinically relevant cases, such as the treatment of head and neck and prostate tumors. Isoeffect calculations were compared with predictions from a generic RBE value and reported clinical results. Results: The generic RBE = 1.1 appears to be a reasonable estimate for the proton RBE of rapidly growing tissues irradiated with low LET radiation. However, the use of a variable RBE predicts larger differences for tissues with low {alpha}/{beta} (both tumor and normal) and at low doses per fraction. In some situations these differences may appear in contrast to the findings from photon studies highlighting the importance of accurate accounting for the radiobiological effectiveness of protons. Furthermore, the use of variable RBE leads to closer predictions to clinical results. Conclusions: The LET dependence of the RBE has a strong impact on the predicted effectiveness of fractionated proton radiotherapy. The magnitude of the effect is modulated by the fractionation sensitivity and the fractional dose indicating the need for accurate analyses both in the target and around it. Care should therefore be employed for changing clinical fractionation patterns or when analyzing results from clinical studies for this type of radiation.

Dasu, Alexandru; Toma-Dasu, Iuliana [Department of Radiation Physics UHL, County Council of Oestergoetland, 581 85 Linkoeping (Sweden) and Radiation Physics, Department of Medical and Health Sciences, Faculty of Health Sciences, Linkoeping University, 581 83 Linkoeping (Sweden); Medical Radiation Physics, Stockholm University and Karolinska Institute, 171 76 Stockholm (Sweden)

2013-01-15T23:59:59.000Z

80

alostmagazineofthejazzage INTRODUCING  

E-Print Network [OSTI]

in a fearsome wind. Behind them, hand uplifted, loomed a policeman, balanced else- where by a newspaper headline across hundreds of miles.The city's banks, de- partment stores, stockyards, grain and lumber mills

McReynolds, Ben

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Introducing Mudbox  

Science Journals Connector (OSTI)

One of the first books on Autodesk's new Mudbox 3D modeling and sculpting tool! Autodesk's Mudbox was used to create photorealistic creatures for The Dark Knight, The Mist, and others films. Now you can join the crowd interested in learning this exciting ...

Ara Kermanikian

2010-07-01T23:59:59.000Z

82

Introducing relativity  

Science Journals Connector (OSTI)

... from this discussion, to be followed by an updated description of black holes and the Kuskal manifold.

Paul Davies

1977-09-22T23:59:59.000Z

83

Generic Wave-Function Description of Fractional Quantum Anomalous Hall States and Fractional Topological Insulators  

Science Journals Connector (OSTI)

We propose a systematical approach to construct generic fractional quantum anomalous Hall states, which are generalizations of the fractional quantum Hall states to lattice models with zero net magnetic field and full lattice translation symmetry. Local and translationally invariant Hamiltonians can also be constructed, for which the proposed states are unique ground states. Our result demonstrates that generic chiral topologically ordered states can be realized in lattice models, without requiring magnetic translation symmetry and Landau level structure. We further generalize our approach to fractional topological insulators, and provide the first explicit wave-function description of fractional topological insulators in the absence of spin conservation.

Xiao-Liang Qi

2011-09-15T23:59:59.000Z

84

On sampling fractions and electron shower shapes  

SciTech Connect (OSTI)

We study the usage of various definitions of sampling fractions in understanding electron shower shapes in a sampling multilayer electromagnetic calorimeter. We show that the sampling fractions obtained by the conventional definition (I) of (average observed energy in layer)/(average deposited energy in layer) will not give the best energy resolution for the calorimeter. The reason for this is shown to be the presence of layer by layer correlations in an electromagnetic shower. The best resolution is obtained by minimizing the deviation from the total input energy using a least squares algorithm. The 'sampling fractions' obtained by this method (II) are shown to give the best resolution for overall energy. We further show that the method (II) sampling fractions are obtained by summing the columns of a non-local {lambda} tensor that incorporates the correlations. We establish that the sampling fractions (II) cannot be used to predict the layer by layer energies and that one needs to employ the full {lambda} tensor for this purpose. This effect is again a result of the correlations.

Peryshkin, Alexander; Raja, Rajendran; /Fermilab

2011-12-01T23:59:59.000Z

85

Copper isotope fractionation in acid mine drainage. | EMSL  

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

Copper isotope fractionation in acid mine drainage. Copper isotope fractionation in acid mine drainage. Abstract: We surveyed the Cu isotopic composition of primary minerals and...

86

Carbon isotope fractionation in protoplanetary disks  

E-Print Network [OSTI]

We investigate the gas-phase and grain-surface chemistry in the inner 30 AU of a typical protoplanetary disk using a new model which calculates the gas temperature by solving the gas heating and cooling balance and which has an improved treatment of the UV radiation field. We discuss inner-disk chemistry in general, obtaining excellent agreement with recent observations which have probed the material in the inner regions of protoplanetary disks. We also apply our model to study the isotopic fractionation of carbon. Results show that the fractionation ratio, 12C/13C, of the system varies with radius and height in the disk. Different behaviour is seen in the fractionation of different species. We compare our results with 12C/13C ratios in the Solar System comets, and find a stark contrast, indicative of reprocessing.

Paul M. Woods; Karen Willacy

2008-12-01T23:59:59.000Z

87

Multi-dimensional fractional wave equation and some properties of its fundamental solution  

E-Print Network [OSTI]

In this paper, a multi-dimensional fractional wave equation that describes propagation of the damped waves is introduced and analyzed. In contrast to the fractional diffusion-wave equation, the fractional wave equation contains fractional derivatives of the same order $\\alpha,\\ 1\\le \\alpha \\le 2$ both in space and in time. This feature is a decisive factor for inheriting some crucial characteristics of the wave equation like e.g. a constant phase velocity of the damped waves that are described by the fractional wave equation. Some new integral representations of the fundamental solution of the multi-dimensional wave equation are presented. In the one- and three-dimensional cases, the fundamental solution is obtained in explicit form in terms of elementary functions. In the one-dimensional case, the fundamental solution is shown to be a spatial probability density function evolving in time. However, for the dimensions grater than one, the fundamental solution can be negative and therefore does not allow a probabilistic interpretation anymore. To illustrate analytical findings, results of numerical calculations and numerous plots are presented.

Yuri Luchko

2013-11-22T23:59:59.000Z

88

The Fractional Kinetic Equation and Thermonuclear Functions  

E-Print Network [OSTI]

The paper discusses the solution of a simple kinetic equation of the type used for the computation of the change of the chemical composition in stars like the Sun. Starting from the standard form of the kinetic equation it is generalized to a fractional kinetic equation and its solutions in terms of H-functions are obtained. The role of thermonuclear functions, which are also represented in terms of G- and H-functions, in such a fractional kinetic equation is emphasized. Results contained in this paper are related to recent investigations of possible astrophysical solutions of the solar neutrino problem.

H. J. Haubold; A. M. Mathai

2000-01-16T23:59:59.000Z

89

Spread and impact of introduced conifers in South America: Lessons from other southern hemisphere regions .  

E-Print Network [OSTI]

??The history of conifers introduced earlier elsewhere in the southern hemisphere suggests that recent invasions in Argentina, Brazil, Chile and Uruguay are likely to increase… (more)

Simberloff, Daniel

2009-01-01T23:59:59.000Z

90

Promoting the Reduction Reactivity of Ilmenite by Introducing Foreign Ions in Chemical Looping Combustion  

Science Journals Connector (OSTI)

Promoting the Reduction Reactivity of Ilmenite by Introducing Foreign Ions in Chemical Looping Combustion ... Industrial & Engineering Chemistry Research2014 53 (39), 15157-15166 ...

Jinhua Bao; Zhenshan Li; Ningsheng Cai

2013-04-15T23:59:59.000Z

91

Fractionalized exergy for evaluating research performance  

Science Journals Connector (OSTI)

The approach based on “thermodynamic” considerations that can quantify research performance using an exergy term defined as X = iC, where i is the impact and C is the number of citations is now extended to cases where fractionalized counting ... Keywords: author productivity, citation analysis, impact factor, scientometrics

Gangan Prathap

2011-11-01T23:59:59.000Z

92

Fractional Quantum Hall Effect and Nonabelian Statistics  

Science Journals Connector (OSTI)

......Articles Fractional Quantum Hall Effect and Nonabelian Statistics N...rc=1/8-1/8=0; this effect would be due to the Pfaffian...Sloan Foundation Fellow- ship and by NSF PYI DMR-9157484...ed.), The Quantum Hall Effect, 2nd edition (Springer, New......

N. Read; G. Moore

1992-01-01T23:59:59.000Z

93

Measurement of the D -> pipi branching fractions  

E-Print Network [OSTI]

Using data from CLEO II at the Cornell Electron Storage Ring we provide a new measurement of the branching fraction for D0 --> pi+pi-, and we present the first measurements of D0 --> pi0pi0 and of D+ --> pi+pi0, which is ...

Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H.

1993-09-01T23:59:59.000Z

94

Measurement of the D*(2010) branching fractions  

E-Print Network [OSTI]

We report a measurement of the D*+ and D*0 decay branching fractions based on 780 pb-1 of data collected with the CLEO II detector. For radiative D*+ decay, we obtain an upper limit, B(D*+ --> D+ gamma) < 4.2% (90% confidence ...

Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H.

1992-10-01T23:59:59.000Z

95

Fractional Quantization of the Hall Effect  

DOE R&D Accomplishments [OSTI]

The Fractional Quantum Hall Effect is caused by the condensation of a two-dimensional electron gas in a strong magnetic field into a new type of macroscopic ground state, the elementary excitations of which are fermions of charge 1/m, where m is an odd integer. A mathematical description is presented.

Laughlin, R. B.

1984-02-27T23:59:59.000Z

96

Historical Mammal Extinction on Christmas Island (Indian Ocean) Correlates with Introduced Infectious Disease  

E-Print Network [OSTI]

Historical Mammal Extinction on Christmas Island (Indian Ocean) Correlates with Introduced. A case in point is the extinction of the endemic Christmas Island rat (Rattus macleari): although it has on Christmas Island (Indian Ocean) Correlates with Introduced Infectious Disease. PLoS ONE 3(11): e3602. doi:10

DeSalle, Rob

97

CP(Graph): Introducing a Graph Computation Domain in Constraint Programming  

E-Print Network [OSTI]

CP(Graph): Introducing a Graph Computation Domain in Constraint Programming Gregoire Dooms, Yves constraint programming by introducing CP(Graph), a new computation domain focused on graphs including a new and its associated propagator are sketched. CP(Graph) is in- tegrated with finite domain and finite sets

Deville, Yves

98

Introducing a Girl to Engineering - A Day at Argonne National Lab |  

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

Introducing a Girl to Engineering - A Day at Argonne National Lab Introducing a Girl to Engineering - A Day at Argonne National Lab Introducing a Girl to Engineering - A Day at Argonne National Lab February 25, 2013 - 2:51pm Addthis Participants of the 2013 Introduce a Girl to Engineering Day gather at Argonne National Laboratory with Director Dot Harris. Participants of the 2013 Introduce a Girl to Engineering Day gather at Argonne National Laboratory with Director Dot Harris. Dot Harris Dot Harris The Honorable Dot Harris, Director, Office of Economic Impact and Diversity Did you know that while women comprise 48 percent of the U.S. workforce, they hold only 24 percent of STEM jobs? STEM, or science, technology, engineering, and mathematics, is critical for the mission of the Energy Department in securing our clean energy future - and it's critical for the

99

Clean Fractionation: Technology Available for Licensing  

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

Clean Fractionation Clean Fractionation National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov NREL is a national laboratory of the U.S. Department of Energy Offi ce of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. NREL/FS-7A1-43959 * October 2008 Printed with a renewable-source ink on paper containing at least 50% wastepaper, including 10% postconsumer waste. You'll find more technologies available for licensing on the NREL Technology Transfer Web site at www.nrel.gov/technologytransfer/. National Renewable Energy Laboratory Innovation for Our Energy Future Biorefinery production costs are driven Insolubles Wash Cellulose pulp Lignocellulosic feedstock Solubles

100

Fluid catalytic cracking of heavy petroleum fractions  

SciTech Connect (OSTI)

A process is claimed for fluid catalytic cracking of residuum and other heavy oils comprising of gas oil, petroleum residue, reduced and whole crudes and shale oil to produce gasoline and other liquid products which are separated in various streams in a fractionator and associated vapor recovery equipment. The heat from combustion of coke on the coked catalyst is removed by reacting sulfur-containing coke deposits with steam and oxygen in a separate stripper-gasifier to produce a low btu gas stream comprising of sulfur compounds, methane, carbon monoxide, hydrogen, and carbon dioxide at a temperature of from about 1100/sup 0/F. To about 2200/sup 0/F. The partially regenerated catalyst then undergoes complete carbon removal in a regeneration vessel. The regenerated catalyst is recycled for re-use in the cracking of heavy petroleum fractions. The liquid products are gasoline, distillates, heavy fuel oil, and light hydrocarbons.

McHenry, K.W.

1981-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Fractionation of five technical lignins by selective extraction in green solvents and characterisation of isolated fractions  

Science Journals Connector (OSTI)

Abstract Lignins from softwood, hardwood, grass and wheat straw were fractionated by selective extraction at ambient temperature using green solvents like acetone/water solutions of 10, 30, 50, 70 and 90% (v/v) acetone and ethyl acetate. A comparison between the isolated fractions and unfractionated lignins was made in terms of extraction yield, lignin solubility factor, molecular weight distribution and functional group composition. Low molecular weight (LMW) lignin fractions with narrow dispersity are obtained by extraction with ethyl acetate and acetone–water solution containing 30% acetone, with yields depending on the type and the functional group content of lignins. A significant amount (56%) of the organosolv hardwood lignin with low molecular weight (Mw = 1868 g/mol) and low dispersity was isolated from ethyl acetate. Insoluble fractions with very high molecular weight (Mw between 10 and 17 kg/mol) are obtained in low yield from acetone–water solutions with 50, 70 and 90% acetone. LMW lignins are in general less condensed and have lower aliphatic hydroxyl content than parent lignins while the HMW fractions have a higher content of condensed hydroxyls. Principal component analysis on the chemical composition of lignins and isolated fractions determined from 31P NMR data showed the high heterogeneity of the technical lignins. Partial least squares models based on FT-IR spectral data were developed to predict the functional group content determined by quantitative 31P NMR analysis of technical lignins and lignin fractions. This approach can be used to develop simple, rapid and accurate analytical tools to monitor and control the selective fractionation of lignin.

Carmen G. Boeriu; Firu?a I. Fi?ig?u; Richard J.A. Gosselink; August E. Frissen; Jan Stoutjesdijk; Francisc Peter

2014-01-01T23:59:59.000Z

102

Fractional Quantum Hall States in Graphene  

E-Print Network [OSTI]

We quantum mechanically analyze the fractional quantum Hall effect in graphene. This will be done by building the corresponding states in terms of a potential governing the interactions and discussing other issues. More precisely, we consider a system of particles in the presence of an external magnetic field and take into account of a specific interaction that captures the basic features of the Laughlin series \

Ahmed Jellal; Bellati Malika

2008-05-15T23:59:59.000Z

103

Pyrolysis of shale oil residual fractions  

SciTech Connect (OSTI)

The freezing point of JP-5, the Navy jet fuel, has been related to the n-alkane content, specifically n-hexadecane. In general, jet fuels from shale oil have the highest n-alkanes. The formation of n-alkanes in the jet fuel distillation range can be explained if large n-alkanes are present in the crude oil source. Quantities of large n-alkanes are insufficient, however, to explain the amounts found - up to 37% n-alkanes in the jet fuel range. Other possible precursors to small straight chain molecules are substituted cyclic compounds. Attack in the side chain obviously afford a path to an n-alkane. Aromatic hydrocarbons, esters, acids, amines, and ethers also have the potential to form n-alkanes if an unbranched alkyl chain is present in the molecule. Investigations showed that the best yield of the JP-5 cut comes at different times for the various fractions, but a time in the 60 to 120 min range would appear to be the optimum time for good yield at 450/sup 0/C. The longer time would be preferred with respect to lower potential n-alkane yield. None of the fractions gave n-alkane yields approaching the 37% amount found in the Shale-I JP-5. A temperature different than the 450/sup 0/C used here might affect the conversion percentage. Further the combined saturate, aromatic, and polar fractions may interact under pyrolysis conditions to give higher potential n-alkane yields than the fractions stressed independently.

Hazlett, R.N.; Beal, E.; Vetter, T.; Sonntag, R.; Moniz, W.

1980-01-01T23:59:59.000Z

104

Photo of the Week: Women in STEM Introducing Girls to Engineering |  

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

Women in STEM Introducing Girls to Engineering Women in STEM Introducing Girls to Engineering Photo of the Week: Women in STEM Introducing Girls to Engineering March 4, 2013 - 11:51am Addthis This Friday, March 8, marks International Women's Day, and the recognition of women's achievements all over the world. At the Energy Department and each of the National Laboratories, some of the nation's top women scientists and engineers attend events to urge girls to open their minds to careers in science, technology, engineering and math (STEM). In this Febraury 2012 photo, a group of eighth grade girls were invited to Argonne National Laboratory to participate in events during the annual Introduce a Girl to Engineering Day. Division director Amanda Petford-Long and other Argonne mentors are pictured observing a trial run of race cars built by the eighth grade students. | Photo courtesy of George Joch/Argonne National Laboratory.

105

Y-12 hosts 'Introduce a Girl to Engineering' event | National Nuclear  

National Nuclear Security Administration (NNSA)

'Introduce a Girl to Engineering' event | National Nuclear 'Introduce a Girl to Engineering' event | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Y-12 hosts 'Introduce a Girl to Engineering' event Y-12 hosts 'Introduce a Girl to Engineering' event Posted By Office of Public Affairs NNSA Blog Michelle Foster of Y-12 Facilities, Infrastructure and Services,

106

Colonisation of Introduced Timber by Algae and Invertebrates, and its Potential Role in Aquatic Ecosystem Restoration  

Science Journals Connector (OSTI)

As part of a habitat restoration experiment wood substrates (red gum) were introduced to two lowland streams of SE Australia in which habitat has been severely degraded by deposition of sand eroded from higher...

Nicholas R. Bond; Sergi Sabater; Alena Glaister; Simon Roberts…

2006-02-01T23:59:59.000Z

107

Introducing MARF: a Modular Audio Recognition Framework and its Applications for Scientific and Software Engineering Research  

Science Journals Connector (OSTI)

In this paper we introduce a Modular Audio Recognition Framework (MARF), as an open ... recognition algorithms and beyond in areas such as audio and text processing (NLP) and may ... learning and extension as it ...

Serguei A. Mokhov

2008-01-01T23:59:59.000Z

108

Fractionated Grid Therapy in Treating Cervical Cancers: Conventional Fractionation or Hypofractionation?  

SciTech Connect (OSTI)

Purpose: To evaluate the conventionally fractionated and hypofractionated grid therapy in debulking cervical cancers using the linear quadratic (LQ) model. Methods and Materials: A Monte Carlo technique was used to calculate the dose distribution of a commercially available grid in a 6-MV photon beam. The LQ model was used to evaluate the therapeutic outcome of both the conventionally fractionated (2 Gy/fraction) and hypofractionated (15 Gy/fraction) grid therapy regimens to debulk cervical cancers with different LQ parameters. The equivalent open-field dose (EOD) to the cancer cells and therapeutic ratio (TR) were defined by comparing grid therapy with the open debulking field. The clinical outcomes from 114 patients were used to verify our theoretical model. Results: The cervical cancer and normal tissue cell survival statistics for grid therapy in two regimens were calculated. The EODs and TRs were derived. The EOD was only a fraction of the prescribed dose. The TR was dependent on the prescribed dose and the LQ parameters of both the tumor and normal tissue cells. The grid therapy favors the acutely responding tumors inside radiosensitive normal tissues. Theoretical model predictions were consistent with the clinical outcomes. Conclusions: Grid therapy provided a pronounced therapeutic advantage in both the hypofractionated and conventionally fractionated regimens compared with that seen with single fraction, open debulking field regimens, but the true therapeutic advantage exists only in the hypofractionated grid therapy. The clinical outcomes and our study indicated that a course of open-field radiotherapy is necessary to control tumor growth fully after a grid therapy.

Zhang Hualin [Department of Radiation Medicine, Ohio State University, Columbus, OH (United States)], E-mail: zhang.568@osu.edu; Wang, Jian Z.; Mayr, Nina; Kong Xiang; Yuan Jiankui; Gupta, Nilendu; Lo, Simon; Grecula, John; Montebello, Joseph; Martin, Douglas [Department of Radiation Medicine, Ohio State University, Columbus, OH (United States); Yuh, William [Department of Radiology, Ohio State University, Columbus, OH (United States)

2008-01-01T23:59:59.000Z

109

Pyrolysis of shale oil vacuum distillate fractions  

SciTech Connect (OSTI)

The freezing point of US Navy jet fuel (JP-5) has been related to the amounts of large n-alkanes present in the fuel. This behavior applies to jet fuels derived from alternate fossil fuel resources, such as shale oil, coal, and tar sands, as well as those derived from petroleum. In general, jet fuels from shale oil have the highest and those from coal the lowest n-alkane content. The origin of these n-alkanes in the amounts observed, especially in shale-derived fuels, is not readily explained on the basis of literature information. Studies of the processes, particularly the ones involving thermal stress, used to produce these fuels are needed to define how the n-alkanes form from larger molecules. The information developed will significantly contribute to the selection of processes and refining techniques for future fuel production from shale oil. Carbon-13 nmr studies indicate that oil shale rock contains many long unbranched straight chain hydrocarbon groups. The shale oil derived from the rock also gives indication of considerable straight chain material with large peaks at 14, 23, 30, and 32 ppM in the C-13 nmr spectrum. Previous pyrolysis studies stressed fractions of shale crude oil residua, measured the yields of JP-5, and determined the content of potential n-alkanes in the JP-5 distillation range (4). In this work, a shale crude oil vacuum distillate (Paraho) was separated into three chemical fractions. The fractions were then subjected to nmr analysis to estimate the potential for n-alkane production and to pyrolysis studies to determine an experimental n-alkane yield.

Hazlett, R.N.; Beal, E.

1983-01-01T23:59:59.000Z

110

Pyrolysis of shale oil vacuum distillate fractions  

SciTech Connect (OSTI)

The freezing point of U.S. Navy jet fuel (JP-5) has been related to the amounts of large nalkanes present in the fuel. This behavior applies to jet fuels derived from alternate fossil fuel resources, such as shale oil, coal, and tar sands, as well as those derived from petroleum. In general, jet fuels from shale oil have the highest and those from coal the lowest n-alkane content. The origin of these n-alkanes in the amounts observed, especially in shale-derived fuels, is not readily explained on the basis of literature information. Studies of the processes, particularly the ones involving thermal stress, used to produce these fuels are needed to define how th n-alkanes form from larger molecules. The information developed will significantly contribute to the selection of processes and refining techniques for future fuel production from shale oil. Carbon-13 nmr studies indicate that oil shale rock contains many long unbranched straight chain hydrocarbon groups. The shale oil derived from the rock also gives indication of considerable straight chain material with large peaks at 14, 23, 30 and 32 ppm in the C-13 nmr spectrum. Previous pyrolysis studies stressed fractions of shale crude oil residua, measured the yields of JP-5, and determined the content of potential n-alkanes in the JP-5 distillation range (4). In this work, a shale crude oil vacuum distillate (Paraho) was separated into three chemical fractions. The fractions were then subjected to nmr analysis to estimate the potential for n-alkane production and to pyrolysis studies to determine an experimental n-alkane yield.

Hazlett, R.N.; Beal, E.

1983-02-01T23:59:59.000Z

111

Magnesium-Isotope Fractionation During Plant Growth  

Science Journals Connector (OSTI)

With three stable isotopes naturally abundant (24Mg, 78.992%; 25Mg, 10.003%; 26Mg, 11.005%), magnesium stable isotope fractionation may provide insights into these cycles. ... Measurements of the magnesium isotopic composition of chlorophylls, seeds, shoots, roots, leaves, exudates, and the limiting nutrient solution over time show that the plant appears to establish an isotopic equilibrium with the nutrient available to it and that the plant (in particular, the seeds and exudates) becomes enriched in the heavy isotopes of magnesium in a mass-dependent relationship as the plant reaches maturity. ...

Jay R. Black; Emanuel Epstein; William D. Rains; Qing-zhu Yin; William H. Casey

2008-10-01T23:59:59.000Z

112

Fractional electric charge and quark confinement  

E-Print Network [OSTI]

Owing to their fractional electric charges, quarks are blind to transformations that combine a color center phase with an appropriate electromagnetic one. Such transformations are part of a global $Z_6$-like center symmetry of the Standard Model that is lost when quantum chromodynamics (QCD) is treated as an isolated theory. This symmetry and the corresponding topological defects may be relevant to non-perturbative phenomena such as quark confinement, much like center symmetry and ordinary center vortices are in pure SU($N$) gauge theories. Here we report on our investigations of an analogous symmetry in a 2-color model with dynamical Wilson quarks carrying half-integer electric charge.

Sam R. Edwards; André Sternbeck; Lorenz von Smekal

2012-02-07T23:59:59.000Z

113

Polyfunctional catalyst for processiing benzene fractions  

SciTech Connect (OSTI)

A by-product of the coke industry is a raw benzene fraction benzene- 1 which may serve as for catalytic processes. The paper reports a study on the influence of the composition and temperatures on the activity and selectivity of NiO-V{sub 2}O{sub 6}-MoO{sub 3}/{gamma}-Al{sub 2}O{sub 3} catalysts and the corresponding binary and tertiary subsystems are studied by a pulse method in model reactions; the hydrodealkylating of toluene and the hydrodesulfurizing of thioprhene. The optimal catalyst composition is established. The new catalyst is compared with industrial catalysts.

G. Byakov; B.D. Zubitskii; B.G. Tryasunov; I.Ya. Petrov [Kuznetsk Basin State Technical University, Kemerovo (Russian Federation)

2009-05-15T23:59:59.000Z

114

U-Th-Ra Fractionation During Weathering and River Transport  

Science Journals Connector (OSTI)

...aquatic environment of a phosphogypsum disposal area. J Environ...fractionation of the rare earth elements in a boreal...aquatic environment of a phosphogypsum disposal area. J Environ...fractionation of the rare earth elements in a boreal...

F. Chabaux; J. Riotte; O. Dequincey

115

Assessing the impacts of fractionation on pointing-intensive spacecraft  

E-Print Network [OSTI]

Fractionated spacecraft consist of physically independent, "free-flying" modules composed of various subsystems. Thus, a fractionated spacecraft might consist of one-module responsible for the power generation and storage, ...

O'Neill, Michael Gregory

2010-01-01T23:59:59.000Z

116

Hydrogen isotope fractionation during lipid biosynthesis by Haloarcula marismortui  

E-Print Network [OSTI]

Hydrogen isotope fractionation during lipid biosynthesis by Haloarcula marismortui Sitindra S studied the controls on the fractionation of hydrogen isotopes during lipid biosynthesis by Haloarcula marismortui, a halophilic archaea, in pure culture experiments by varying organic substrate, the hydrogen

117

Fiber fractionation as a method of improving handsheet properties  

E-Print Network [OSTI]

to copyright. Vol. 78, No. 5 Tappi Journal 123 #12;Recycling used. Following fractionation, the tionation can

Abubakr, Said

118

Catalytic isomerization of the overhead fractions of straight run gasoline  

Science Journals Connector (OSTI)

The isomerization of the pentane and hexane fractions of gasoline on a platinum catalyst was studied, as...

N. R. Bursian; G. N. Maslyanskii…

1965-06-01T23:59:59.000Z

119

Cryogenic search for fractionally charged particles  

Science Journals Connector (OSTI)

An experiment was performed to test the hypothesis of cryogenic trapping of fractionally charged particles, suggested as a possible explanation for the results of LaRue, Fairbank, Hebard, and Phillips at Stanford. A Nb-filament source was built, which could be cooled to 4.2°K and rapidly heated to several hundred °K. The source was operated in the terminal of a 700-kV Cockcroft-Walton accelerator and energy spectra of positively charged particles emerging from the filament were measured under a variety of operating conditions. No events above a background of 10-2 counts/sec were found in the energy regions where one might have expected several hundred particles of charge +13e or +23e as the source was heated. A mass range from 10 MeV/c2 to 100 GeV/c2 was covered in the experiment. Although negative results are rarely unambiguous, our findings exclude one class of hypotheses which might have explained the apparent fractional charges of the Stanford experiments.

W. Kutschera; J. P. Schiffer; D. Frekers; W. Henning; M. Paul; K. W. Shepard; C. D. Curtis; C. W. Schmidt

1984-03-01T23:59:59.000Z

120

Process for stabilization of coal liquid fractions  

DOE Patents [OSTI]

Coal liquid fractions to be used as fuels are stabilized against gum formation and viscosity increases during storage, permitting the fuel to be burned as is, without further expensive treatments to remove gums or gum-forming materials. Stabilization is accomplished by addition of cyclohexanol or other simple inexpensive secondary and tertiary alcohols, secondary and tertiary amines, and ketones to such coal liquids at levels of 5-25% by weight with respect to the coal liquid being treated. Cyclohexanol is a particularly effective and cost-efficient stabilizer. Other stabilizers are isopropanol, diphenylmethanol, tertiary butanol, dipropylamine, triethylamine, diphenylamine, ethylmethylketone, cyclohexanone, methylphenylketone, and benzophenone. Experimental data indicate that stabilization is achieved by breaking hydrogen bonds between phenols in the coal liquid, thereby preventing or retarding oxidative coupling. In addition, it has been found that coal liquid fractions stabilized according to the invention can be mixed with petroleum-derived liquid fuels to produce mixtures in which gum deposition is prevented or reduced relative to similar mixtures not containing stabilizer.

Davies, Geoffrey (Boston, MA); El-Toukhy, Ahmed (Alexandria, EG)

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Electron Spin Precession for the Time Fractional Pauli Equation  

E-Print Network [OSTI]

In this work, we aim to extend the application of the fractional calculus in the realm of quantum mechanics. We present a time fractional Pauli equation containing Caputo fractional derivative. By use of the new equation we study the electron spin precession problem in a homogeneous constant magnetic field.

Hosein Nasrolahpour

2011-04-05T23:59:59.000Z

122

Hamilton-Jacobi formulation of systems within Caputo's fractional derivative  

E-Print Network [OSTI]

In this paper we develop a fractional Hamilton-Jacobi formulation for discrete systems in terms of fractional Caputo derivatives. The fractional action function is obtained and the solutions of the equations of motion are recovered. An example is studied in details.

Eqab M. Rabei; Ibtesam Almayteh; Sami I. Muslih; Dumitru Baleanu

2007-03-26T23:59:59.000Z

123

Global Discovery introduced at AAAS 2006 | OSTI, US Dept of Energy, Office  

Office of Scientific and Technical Information (OSTI)

Global Discovery introduced at AAAS 2006 Global Discovery introduced at AAAS 2006 Office of Scientific & Technical Information NEWS MEDIA CONTACT: Cathey Daniels, (865) 576-9539 FOR IMMEDIATE RELEASE February 17, 2006 Global Discovery introduced at AAAS 2006 Oak Ridge, TN - The U.S. Department of Energy Office of Scientific and Technical Information, a component of the Office of Science, is looking at new ways to disseminate science information. As tools and technologies rapidly become more sophisticated, OSTI is conducting applied research on a number of challenges related to this vision aimed at turning local discovery into Global Discovery. The benefits for researchers, for citizens, and for the U.S. economy could prove far-reaching as OSTI, through its Innovations in Scientific Knowledge and

124

Global Discovery introduced at AAAS 2006 | OSTI, US Dept of Energy, Office  

Office of Scientific and Technical Information (OSTI)

Global Discovery introduced at AAAS 2006 Global Discovery introduced at AAAS 2006 The Office of Scientific and Technical Information (OSTI) was a key participant in the symposium, Global Discovery on the Internet, at the American Association for the Advancement of Science (AAAS) 2006 Annual Meeting Feb. 16-20 in St. Louis, MO. The symposium introduced Global Discovery, which promises to increase the pace of science by searching all scientific communities at once for data, information, or methodological advances. "Imagine a Google-like search capability that returns results across the whole of science, giving scientists information on research they didn't even know existed," said Dr. Walter Warnick, director. "Except that this search would go further than traditional search engines. Rather than

125

A type of hyperelliptic continued fraction. Based on hints of Tschebychev, a continued fraction is described  

E-Print Network [OSTI]

to this as the classical CFE. See [1], Tschebychev (loc. cit.), [12], and for more recent accounts [2, 3, 4, 18 CFE. The fraction detects the torsion, when finite, of D - D- and D - W, where W is any divisor, because of symmetries analogous to those of the classical CFE, it can be expected to run about twice

Berry, Thomas

126

Fundamentals of Biomass Pretreatment by Fractionation  

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

Fundamentals of Biomass Pretreatment by Fractionation Poulomi Sannigrahi 1,2 and Arthur J. Ragauskas 1,2,3 1 BioEnergy Science Center, Oak Ridge, USA 2 Institute of Paper Science and Technology, Georgia Institute of Technology, Atlanta, USA 3 School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, USA 10.1 Introduction With the rise in global energy demand and environmental concerns about the use of fossil fuels, the need for rapid development of alternative fuels from sustainable, non-food sources is now well acknowledged. The effective utilization of low-cost high-volume agricultural and forest biomass for the production of transporta- tion fuels and bio-based materials will play a vital role in addressing this concern [1]. The processing of lignocellulosic biomass, especially from mixed agricultural and forest sources with varying composition,

127

Release fractions for Rocky Flats specific accidents  

SciTech Connect (OSTI)

As Rocky Flats and other DOE facilities begin the transition process towards decommissioning, the nature of the scenarios to be studied in safety analysis will change. Whereas the previous emphasis in safety accidents related to production, now the emphasis is shifting to accidents related tc decommissioning and waste management. Accident scenarios of concern at Rocky Flats now include situations of a different nature and different scale than are represented by most of the existing experimental accident data. This presentation will discuss approaches@to use for applying the existing body of release fraction data to this new emphasis. Mention will also be made of ongoing efforts to produce new data and improve the understanding of physical mechanisms involved.

Weiss, R.C.

1992-09-01T23:59:59.000Z

128

Release fractions for Rocky Flats specific accidents  

SciTech Connect (OSTI)

As Rocky Flats and other DOE facilities begin the transition process towards decommissioning, the nature of the scenarios to be studied in safety analysis will change. Whereas the previous emphasis in safety accidents related to production, now the emphasis is shifting to accidents related tc decommissioning and waste management. Accident scenarios of concern at Rocky Flats now include situations of a different nature and different scale than are represented by most of the existing experimental accident data. This presentation will discuss approaches to use for applying the existing body of release fraction data to this new emphasis. Mention will also be made of ongoing efforts to produce new data and improve the understanding of physical mechanisms involved.

Weiss, R.C.

1992-01-01T23:59:59.000Z

129

Multidimensional optical fractionation with holographic verification  

E-Print Network [OSTI]

The trajectories of colloidal particles driven through a periodic potential energy landscape can become kinetically locked in to directions dictated by the landscape's symmetries. When the landscape is realized with forces exerted by a structured light field, the path a given particle follows has been predicted to depend exquisitely sensitively on such properties as the particle's size and refractive index These predictions, however, have not been tested experimentally. Here, we describe measurements of colloidal silica spheres' transport through arrays of holographic optical traps that use holographic video microscopy to track individual spheres' motions in three dimensions and simultaneously to measure each sphere's radius and refractive index with part-per-thousand resolution. These measurements confirm previously untested predictions for the threshold of kinetically locked-in transport, and demonstrate the ability of optical fractionation to sort colloidal spheres with part-per-thousand resolution on multiple characteristics simultaneously.

Ke Xiao; David G. Grier

2009-12-23T23:59:59.000Z

130

Anomalous Topological Pumps and Fractional Josephson Effects  

E-Print Network [OSTI]

We discover novel topological pumps in the Josephson effects for superconductors. The phase difference, which is odd under the chiral symmetry defined by the product of time-reversal and particle-hole symmetries, acts as an anomalous adiabatic parameter. These pumping cycles are different from those in the "periodic table", and are characterized by $Z\\times Z$ or $Z_2\\times Z_2$ strong invariants. We determine the general classifications in class AIII, and those in class DIII with a single anomalous parameter. For the $Z_2\\times Z_2$ topological pump in class DIII, one $Z_2$ invariant describes the coincidence of fermion parity and spin pumps whereas the other one reflects the non-Abelian statistics of Majorana Kramers pairs, leading to three distinct fractional Josephson effects.

Fan Zhang; C. L. Kane

2013-10-20T23:59:59.000Z

131

Introducing mobility into CSP B Steve Schneider, Helen Treharne, and Beeta Vajar  

E-Print Network [OSTI]

AVoCS 2007 Introducing mobility into CSP B Steve Schneider, Helen Treharne, and Beeta Vajar Department of Computing University of Surrey Guildford, Surrey, UK Abstract CSP B is a combination of CSP, the semantic foundation for pi |B is cumbersome for reasoning about systems, and a CSP based approach may

Schneider, Steve

132

Changes in mercury bioaccumulation in an apex predator in response to removal of an introduced competitor  

E-Print Network [OSTI]

Changes in mercury bioaccumulation in an apex predator in response to removal of an introduced and decreased mercury concentrations in remaining fish. Instead, we observed a significant increase in lake web structure can influence MeHg concentrations in top predators. Keywords Mercury Á Food web Á Fish

Kraft, Clifford E.

133

Critical care in hospitals: When to introduce a Step Down Unit?  

E-Print Network [OSTI]

Critical care in hospitals: When to introduce a Step Down Unit? Mor Armony Stern School of Business, New York University marmony@stern.nyu.edu Carri W. Chan Decision, Risk, and Operations, Columbia community as to whether and how SDUs should be used. On one hand, an SDU alleviates ICU congestion

Chan, Carri W.

134

Training designed to introduce the user to the Argos reporting tool and data. By  

E-Print Network [OSTI]

Training designed to introduce the user to the Argos reporting tool and data. By the end of the training session, the user will be able to create datablocks and reports that will be the building blocks for most reporting needs. Training designed to refresh the user on the Argos reporting tool and data

135

Getting To Know Matlab The following worksheets will introduce Matlab to the new user. Please, be  

E-Print Network [OSTI]

Getting To Know Matlab The following worksheets will introduce Matlab to the new user. Please is to be typed in Matlab. 2. Using the arrows you can scroll in the previous Matlab commands, so you do not have advisor at the end of the lesson. 1. What is Matlab? Matlab is a technical computing environment for high

Barkana, Rennan

136

Unit 14: Testing and Inspection To introduce software testing and to develop its  

E-Print Network [OSTI]

1 Unit 14: Testing and Inspection Objectives Ð To introduce software testing and to develop its and code as a means of reducing errors in software development. What is Testing? ¥ software testing is the process of seeking errors ¥ this process is active - if we find no errors after performing a test we

Finkelstein, Anthony

137

Introducing Flexible Quantity Contracts into Distributed SoC and Embedded System Design Processes  

E-Print Network [OSTI]

Introducing Flexible Quantity Contracts into Distributed SoC and Embedded System Design Processes and flexible contracts regulate cooperation and cost distribution. The process ef- fectively delays the design a distributed design process. Today we already find dis- tributed design processes in automotive engineering

Paris-Sud XI, Université de

138

Identifying and managing the ecological risks of using introduced tree species in Sweden's production forestry  

E-Print Network [OSTI]

Review Identifying and managing the ecological risks of using introduced tree species in Sweden Alnarp, Sweden b Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, Box 7026, Ulls v 26A, 750 07 Uppsala, Sweden c Department of Ecology, Swedish University

139

Preprinted from the Proceedings of UPCAEDM, 1996. Introducing Virtual Reality Into the Engineering Curriculum  

E-Print Network [OSTI]

Preprinted from the Proceedings of UPCAEDM, 1996. 1 Introducing Virtual Reality ] on the Internet and started developing some simple worlds, and I attended the annual meeting of the American an opportunity to explore a very interesting area of research for which I was uniquely qualified. The next step

Bell, John T.

140

Fractals with turtle graphics: a CS2 programming exercise for introducing recursion  

Science Journals Connector (OSTI)

This paper describes a programming exercise developed and used in CS2 classes to help introduce recursive programming. Providing a set of primitives which comprise a graphics system allows the students to focus on top down design and the nature of recursion, ...

Ivan B. Liss; Thomas C. McMillan

1987-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

IMPACTS OF INTRODUCED NORWAY RATS (RATTUS NORVEGICUS) ON LEAST AUKLETS (AETHIA PUSILLA) BREEDING AT KISKA ISLAND,  

E-Print Network [OSTI]

IMPACTS OF INTRODUCED NORWAY RATS (RATTUS NORVEGICUS) ON LEAST AUKLETS (AETHIA PUSILLA) BREEDING 2004 #12;ii ABSTRACT I quantified impacts of non-indigenous Norway rats on Least Auklets breeding at Kiska Island. Little direct evidence of rat predation was found in my productivity crevices

Jones, Ian L.

142

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

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

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94

143

Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

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

TS NOT MEASUREMENT SENSITIVE DOE-HDBK-3010-94 December 1994 Reaffirmed 2013 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650.

144

The present invention relates to automated methods of introducing multiple nucleic acid sequences into one or more target cells.  

DOE Patents [OSTI]

The present invention relates to automated methods of introducing multiple nucleic acid sequences into one or more target cells.

Church, George M. (Brookline, MA); Wang, Harris H. (Cambridge, MA); Isaacs, Farren J. (Brookline, MA)

2012-04-10T23:59:59.000Z

145

Fractional Equations of Kicked Systems and Discrete Maps  

E-Print Network [OSTI]

Starting from kicked equations of motion with derivatives of non-integer orders, we obtain "fractional" discrete maps. These maps are generalizations of well-known universal, standard, dissipative, kicked damped rotator maps. The main property of the suggested fractional maps is a long-term memory. The memory effects in the fractional discrete maps mean that their present state evolution depends on all past states with special forms of weights. These forms are represented by combinations of power-law functions.

Vasily E. Tarasov; George M. Zaslavsky

2011-07-20T23:59:59.000Z

146

Projective synchronization in fractional order chaotic systems and its control  

E-Print Network [OSTI]

The chaotic dynamics of fractional (non-integer) order systems have begun to attract much attention in recent years. In this paper, we study the projective synchronization in two coupled fractional order chaotic oscillators. It is shown that projective synchronization can also exist in coupled fractional order chaotic systems. A simple feedback control method for controlling the scaling factor onto a desired value is also presented.

Chunguang Li

2006-04-24T23:59:59.000Z

147

Fractional entropy decay and the third law of thermodynamics  

Science Journals Connector (OSTI)

We report in this paper a theoretical study on the quantum thermodynamic properties of a fractional damping system. Through the analysis, few nontrivial characteristics are revealed, which include (1) a fractional power-law decay entropy function, which provides an evidence for the validity of the third law of thermodynamics in the quantum dissipative region and (2) the varying of the entropy from a nonlinear divergent function to a semilinear decay function with a fractional exponent as the temperature approaches absolute zero.

Chun-Yang Wang; Xue-Mei Zong; Hong Zhang; Ming Yi

2014-08-21T23:59:59.000Z

148

Introduce a Girl to Engineering Day (IGED) at Argonne National Lab -  

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

Introduce a Girl to Engineering Day (IGED) Introduce a Girl to Engineering Day (IGED) Search Go Home Postdocs Students Student Outreach Resources for Schools U.S.-based International (English) International (Other) Events IGED 2013 Science Careers in Search of Women Girls, choose a career in Nuclear Science and Technology! Argonne Nuclear Engineers tell why they chose a Nuclear Career Resources Contact Us Recent Events Science Careers in Search of Women, Apr. 18, 2013 Junior Girl Scout Workshop 'Atomic Fission Fun with the American Nuclear Society', Jan. 26, 2013 Getting to know nuclear energy: the past, the present & the future - free public lecture (Nov. 15, 2012, Argonne National Laboratory) On January 26, 2013, Argonne staff members participated in the Junior Girl Scout Workshop 'Atomic Fission Fun with the American Nuclear Society'

149

Introducing SAM (Sun and Aureole Measurement), a New, Ground-based  

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

Introducing SAM (Sun and Aureole Measurement), a New, Ground-based Introducing SAM (Sun and Aureole Measurement), a New, Ground-based Capability for Measuring Cloud Optical Properties DeVore, John Visidyne, Inc. Stair, A Visidyne McClatchey, Robert McClatchey Associates Category: Instruments Visidyne has developed a new, ground-based capability for the remote measurement of cloud and aerosol optical properties. Named SAM, for Sun and Aureole Measurement, this system makes precise measurements of the radiance profile of the solar disk and aureole. The radiance of the solar disk affords a definitive measure of the column optical depth when corrected for forward scattering. The aureole profile is a measure of the forward scattering properties of the particles in the column and can be used to correct the optical depth. The aureole profile can also be used to derive

150

ASES Wind Division Webinar: Introducing WindLease: Making Wind Energy Affordable  

Wind Powering America (EERE)

Introducing WindLease(tm): Making Wind Energy Affordable Introducing WindLease(tm): Making Wind Energy Affordable August 1, 2013 Coordinator: Welcome and thank you for standing by. At this time all participants are on a listen-only mode until the question and answer session of today's conference. At that time if you would like to ask a question press *1 on your touchtone phone. I would like to inform all parties that this call is being recorded. If you have any objections please disconnect at this time. I would now like to turn the call over to Ms. Samantha Rooney, thank you ma'am you may begin. Karin Sinclair: Actually this is Karin Sinclair, thank you. So this is Karin Sinclair, I'm the chair of the ASES Wind Division. I want to welcome you all to this webinar, which is our series of webinars that we put on, we try to do them bi-monthly.

151

Fractional Order Transmission Line Modeling and Parameter Identification.  

E-Print Network [OSTI]

??Fractional order calculus (FOC) has wide applications in modeling natural behavior of systems related to different areas of engineering including bioengineering, viscoelasticity, electronics, robotics, control… (more)

Razib, Mohammad Yeasin

2010-01-01T23:59:59.000Z

152

Tunable fractional quantum Hall phases in bilayer graphene  

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

Coulomb interactions drive the existence of a correlated many-body state. Bilayer graphene represents a particularly interesting material in which to study the fractional...

153

Linear Stochastic Fractional Programming with Sum-of-Probabilistic ...  

E-Print Network [OSTI]

Fractional Programming Problem with Mixed Constraints”, Acta Ciencia Indica,. Vol. XXX M, No. 3, pp 497-506. 11. Charles, V., and Dutta, D., “Extremization of ...

2005-04-19T23:59:59.000Z

154

Determination of Charm Hadronic Branching Fractions at CLEO-c  

E-Print Network [OSTI]

Recent results from CLEO-c on measurements of absolute hadronic branching fractions of D0, D+, and Ds+ mesons are presented.

A. Ryd

2007-11-24T23:59:59.000Z

155

Vegetation component of geothermal EIS studies: Introduced plants, ecosystem stability, and geothermal development  

SciTech Connect (OSTI)

This paper contributes new information about the impacts from introduced plant invasions on the native Hawaiian vegetation as consequences of land disturbance and geothermal development activities. In this regard, most geothermal development is expected to act as another recurring source of physical disturbance which favors the spread and maintenance of introduced organisms throughout the region. Where geothermal exploration and development activities extend beyond existing agricultural and residential development, they will become the initial or sole source of disturbance to the naturalized vegetation of the area. Kilauea has a unique ecosystem adapted to the dynamics of a volcanically active landscape. The characteristics of this ecosystem need to be realized in order to understand the major threats to the ecosystem and to evaluate the effects of and mitigation for geothermal development in Puna. The native Puna vegetation is well adapted to disturbances associated with volcanic eruption, but it is ill-adapted to compete with alien plant species in secondary disturbances produced by human activities. Introduced plant and animal species have become a major threat to the continued presence of the native biota in the Puna region of reference.

NONE

1994-10-01T23:59:59.000Z

156

Isotope Fractionation of Water during Evaporation without Condensation  

Science Journals Connector (OSTI)

Specifially, isotope fractionation factors associated with free evaporation (?evap) have been measured as a function of the isotopic composition and temperature of the liquid. ... Liquid-vapor fractionation of oxygen and hydrogen isotopes of water from the freezing to the critical temperature ...

Christopher D. Cappa; Walter S. Drisdell; Jared D. Smith; Richard J. Saykally; Ronald C. Cohen

2005-12-03T23:59:59.000Z

157

Explicit and implicit finite difference schemes for fractional Cattaneo equation  

Science Journals Connector (OSTI)

In this paper, the numerical solution of fractional (non-integer)-order Cattaneo equation for describing anomalous diffusion has been investigated. Two finite difference schemes namely an explicit predictor-corrector and totally implicit schemes have ... Keywords: Convergence rate, Finite difference schemes, Fractional Cattaneo equation, Stability

H. R. Ghazizadeh; M. Maerefat; A. Azimi

2010-09-01T23:59:59.000Z

158

SVC Voltage Regulator Based on Fractional Order PID  

Science Journals Connector (OSTI)

Contradiction exist between rapid and smooth in the dynamic adjustment process of SVC, however, Fractional order PID controller has two degrees of freedom more than the integer order PID controller, and it has better control performance. This article ... Keywords: SVC, Fractional order PID, Voltage regulator, Oustaloup

Manyu Liu; Huaying Dong; Guishu Liang

2012-12-01T23:59:59.000Z

159

Robert B. Laughlin and the Fractional Quantum Hall Effect  

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

Robert B. Laughlin and the Fractional Quantum Hall Effect Robert B. Laughlin and the Fractional Quantum Hall Effect Resources with Additional Information Robert B. Laughlin Photo Courtesy of LLNL Robert B. Laughlin shared the 1998 Nobel Prize in Physics with Horst L. Störmer and Daniel C. Tsui for 'their discovery of a new form of quantum fluid with fractionally charged excitations'. ' ... [I]n 1982 ... Störmer and Tsui discovered the effect. In 1983, Laughlin, then at the Lawrence Livermore National Laboratory, provided the theoretical explanation of the effect in terms of fractionally charged particles. It was a "confluence of things from engineering that prepared me for understanding the fractional quantum Hall effect and coming up with an explanation," Laughlin said during a television interview at Stanford. ...

160

City-level energy and CO2 reduction effect by introducing new residential water heaters  

Science Journals Connector (OSTI)

Simulation models for a variety of new water heater systems were developed and the models were integrated into a city-level residential energy end-use model for Osaka City. Using the model, the potential of energy conservation and CO2 emission-reduction by introducing new residential water heaters was evaluated at the city-level. Optimal water-heating systems for each household category for primary energy reduction, CO2 emission-reduction, or cost reduction were identified by applying the end-use demand model. The effect of subsidies for installing more efficient systems and the influence of diffusion of these systems on electricity load curves were also discussed.

Yoshiyuki Shimoda; Tomo Okamura; Yohei Yamaguchi; Yukio Yamaguchi; Ayako Taniguchi; Takao Morikawa

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Process for introducing electrical conductivity into high-temperature polymeric materials  

DOE Patents [OSTI]

High-temperature electrically conducting polymers. The in situ reactions: AgNO.sub.3 +RCHO.fwdarw.Ag.degree.+RCOOH and R.sub.3 M.fwdarw.M.degree.+3R, where M=Au or Pt have been found to introduce either substantial bulk or surface conductivity in high-temperature polymers. The reactions involving the R.sub.3 M were caused to proceed thermally suggesting the possibility of using laser means for initiating such reactions in selected areas or volumes of the polymeric materials. The polymers successfully investigated to date are polyphenylquinoxaline, polytolylquinoxaline, polyquinoline, polythiazole, and pyrrone.

Liepins, Raimond (Los Alamos, NM); Jorgensen, Betty S. (Jemez Springs, NM); Liepins, Leila Z. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

162

A method to measure the absolute branching fractions of $?_c$ decays  

E-Print Network [OSTI]

It is proposed to exploit the decay of the meson ${B}^+ \\rightarrow p \\pi^+ \\pi^+ \\bar{\\Sigma}_c^{--}$ and of its charge conjugate $B^-$ copiously produced at LHC to obtain a sample of $\\Lambda_c$ baryons through the strong decay $\\Sigma_c \\rightarrow \\Lambda_c \\pi$. The sample thus obtained is not affected by biases typically introduced by selections that depend on specific decay modes. Therefore it allows a measurement of the absolute branching fraction for the decay of the $\\Lambda_c$ baryon into $ p K \\pi$ or into other observable final states to be performed in a model independent manner. The accuracy that can be achieved with this method is discussed and it is shown that it would be either competitive with or an improvement over current measurements.

Andrea Contu; Dorothea Fonnesu; Rudolf Gerhard Christiaan Oldeman; Biagio Saitta; Claudia Vacca

2014-08-28T23:59:59.000Z

163

Uncertainties in Energy Consumption Introduced by Building Operations and Weather for a Medium-Size Office Building  

E-Print Network [OSTI]

Uncertainties in Energy Consumption Introduced by Buildingand actual building energy consumption can be attributed touncertainties in energy consumption due to actual weather

Wang, Liping

2014-01-01T23:59:59.000Z

164

A mixed SOC-turbulence model for nonlocal transport and Levy-fractional Fokker-Planck equation  

E-Print Network [OSTI]

The phenomena of nonlocal transport in magnetically confined plasma are theoretically analyzed. A hybrid model is proposed, which brings together the notion of inverse energy cascade, typical of drift-wave- and two-dimensional fluid turbulence, and the ideas of avalanching behavior, associable with self-organized critical (SOC) behavior. Using statistical arguments, it is shown that an amplification mechanism is needed to introduce nonlocality into dynamics. We obtain a consistent derivation of nonlocal Fokker-Planck equation with space-fractional derivatives from a stochastic Markov process with the transition probabilities defined in reciprocal space. The hybrid model observes the Sparre Andersen universality and defines a new universality class of SOC.

Alexander V. Milovanov; Jens Juul Rasmussen

2014-03-24T23:59:59.000Z

165

Reduction of fuel consumption in gasoline engines by introducing HHO gas into intake manifold  

Science Journals Connector (OSTI)

Brown’s gas (HHO) has recently been introduced to the auto industry as a new source of energy. The present work proposes the design of a new device attached to the engine to integrate an HHO production system with the gasoline engine. The proposed HHO generating device is compact and can be installed in the engine compartment. This auxiliary device was designed, constructed, integrated and tested on a gasoline engine. Test experiments were conducted on a 197cc (Honda G 200) single-cylinder engine. The outcome shows that the optimal surface area of an electrolyte needed to generate sufficient amount of HHO is twenty times that of the piston surface area. Also, the volume of water needed in the cell is about one and half times that of the engine capacity. Eventually, the goals of the integration are: a 20–30% reduction in fuel consumption, lower exhaust temperature, and consequently a reduction in pollution.

Ammar A. Al-Rousan

2010-01-01T23:59:59.000Z

166

Smoothing metallic glasses without introducing crystallization by gas cluster ion beam  

Science Journals Connector (OSTI)

We show that 30?keV Ar cluster ion bombardment of Ni 52.5Nb10Zr15Ti15Pt7.5 metallic glass (MG) can remove surface mountain-like features and reduce the root mean square surface roughness from 12?nm to 0.7?nm. X-ray diffraction analysis reveals no crystallization after cluster ion irradiation. Molecular dynamics simulations show that although damage cascades lead to local melting the subsequent quenching rate is a few orders of magnitude higher than the critical cooling rate for MG formation thus the melted zone retains its amorphous nature down to room temperature. These findings can be applied to obtain ultra-smooth MGs without introducing crystallization.

Lin Shao; Di Chen; Michael Myers; Jing Wang; Buddhi Tilakaratne; Wei-Kan Chu; Guoqiang Xie; Arezoo Zare; Don A. Lucca

2013-01-01T23:59:59.000Z

167

Smoothing metallic glasses without introducing crystallization by gas cluster ion beam  

SciTech Connect (OSTI)

We show that 30 keV Ar cluster ion bombardment of Ni{sub 52.5}Nb{sub 10}Zr{sub 15}Ti{sub 15}Pt{sub 7.5} metallic glass (MG) can remove surface mountain-like features and reduce the root mean square surface roughness from 12 nm to 0.7 nm. X-ray diffraction analysis reveals no crystallization after cluster ion irradiation. Molecular dynamics simulations show that, although damage cascades lead to local melting, the subsequent quenching rate is a few orders of magnitude higher than the critical cooling rate for MG formation, thus the melted zone retains its amorphous nature down to room temperature. These findings can be applied to obtain ultra-smooth MGs without introducing crystallization.

Shao, Lin; Chen, Di; Myers, Michael; Wang, Jing [Department of Nuclear Engineering and Materials Science and Engineering Program, Texas A and M University, College Station, Texas 77843 (United States)] [Department of Nuclear Engineering and Materials Science and Engineering Program, Texas A and M University, College Station, Texas 77843 (United States); Tilakaratne, Buddhi; Wijesundera, Dharshana; Chu, Wei-Kan [Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, Texas 77004 (United States)] [Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, Texas 77004 (United States); Xie, Guoqiang [Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)] [Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan); Zare, Arezoo; Lucca, Don A. [School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)] [School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, Oklahoma 74078 (United States)

2013-03-11T23:59:59.000Z

168

A BIFURCATION RESULT FOR NON-LOCAL FRACTIONAL EQUATIONS  

E-Print Network [OSTI]

, minimal surfaces, materials science and water waves. This is one of the reason why, recently, non studied non-local fractional Laplacian equations with superlinear and subcritical or critical

169

On fractional differential inclusions with the Jumarie derivative  

SciTech Connect (OSTI)

In the paper, fractional differential inclusions with the Jumarie derivative are studied. We discuss the existence and uniqueness of a solution to such problems. Our study relies on standard variational methods.

Kamocki, Rafa?, E-mail: rafkam@math.uni.lodz.pl [Faculty of Mathematics and Computer Science, Chair of Differential Equations and Computer Science, University of Lodz, Banacha 22, 90-238 Lodz (Poland)] [Faculty of Mathematics and Computer Science, Chair of Differential Equations and Computer Science, University of Lodz, Banacha 22, 90-238 Lodz (Poland); Obczy?ski, Cezary, E-mail: czacza@math.uni.lodz.pl [Faculty of Mathematics and Computer Science, Chair of Nonlinear Analysis, University of Lodz, Banacha 22, 90-238 Lodz (Poland)] [Faculty of Mathematics and Computer Science, Chair of Nonlinear Analysis, University of Lodz, Banacha 22, 90-238 Lodz (Poland)

2014-02-15T23:59:59.000Z

170

Deriving emissions time series from sparse atmospheric mole fractions  

E-Print Network [OSTI]

A growth-based Bayesian inverse method is presented for deriving emissions of atmospheric trace species from temporally sparse measurements of their mole fractions. This work is motivated by many recent studies that have ...

Rigby, Matthew

171

Measurement of the Topological Branching Fractions of the ? Lepton  

E-Print Network [OSTI]

We report new and precise measurements of the decay branching fractions of the ? lepton to one and three charged particles. The data, corresponding to an integrated luminosity of 176 pb(?1), were collected by the high ...

Baringer, Philip S.

1985-08-05T23:59:59.000Z

172

Energy Efficiency in Cryogenic Fractionation Through Distributive Distillation  

E-Print Network [OSTI]

-down and cryogenic fractionation steps, the technology can significantly reduce refrigeration power requirements. ARS technology can be applied to revamps of existing plants as well as new plant designs. Additional applications are now being considered...

Carradine, C. R.; McCue, R. H.

173

On the Functional Relation Between Quality Factor and Fractional Bandwidth  

E-Print Network [OSTI]

The functional relation between the fractional band-width and the quality factor of a radiating system is investigated in this note. Several widely used definitions of the quality factor are compared on two examples of RLC circuits that serve as a simplified model of a single resonant antenna tuned to its resonance. It is demonstrated that for a first-order system, only the quality factor based on differentiation of input impedance has unique proportionality to the fractional bandwidth, whereas e.g. the classical definition of the quality factor, i. e. the ratio of the stored energy to the lost energy per one cycle, is not uniquely proportional to the fractional bandwidth. In addition, it is shown that for higher-order systems the quality factor based on differentiation of the input impedance ceases to be uniquely related to the fractional bandwidth.

Capek, Miloslav; Hazdra, Pavel

2014-01-01T23:59:59.000Z

174

Gravity duals of fractional branes in various dimensions  

SciTech Connect (OSTI)

We derive type II supergravity solutions corresponding to space-filling regular and fractional D branes on (9{minus}p)-dimensional conical transverse spaces. Fractional Dp-branes are wrapped D(p+2)-branes; therefore, our solutions exist only if the base of the cone has a non-vanishing Betti number b{sub 2}. We also consider 11-dimensional SUGRA solutions corresponding to regular and fractional M2 branes on 8-dimensional cones whose base has a non-vanishing b{sub 3}. In this case a fractional M2-brane is an M5-brane wrapped over a 3-cycle. We discuss the gauge theory intepretation of these solutions, as well as of the solutions constructed by Cvetic and co-workers.

Herzog, Christopher P.; Klebanov, Igor R.

2001-06-15T23:59:59.000Z

175

NGL fractionators planned for Corpus Christi olefins plant  

Science Journals Connector (OSTI)

TexStar MidStream Services LP is to install two natural gas liquids (NGL) fractionation units adjacent to LyondellBasell affiliate Equistar Chemicals LP's plant in Corpus Christi, Texas, USA.

2013-01-01T23:59:59.000Z

176

RESEARCH Open Access Gene expression and fractionation resistance  

E-Print Network [OSTI]

in Paramecium, Gout et al. [10] identify a clear relationship between high WGD duplicate gene retention rates for explaining variable resistance to fractionation. The Gout et al. paper [10] is the primary inspiration

Sankoff, David

177

Sunlight creates oxygenated species in water-soluble fractions...  

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

a t Sunlight creates oxygenated species in water-soluble fractions of Deepwater horizon oil Phoebe Z. Ray a , Huan Chen b , David C. Podgorski b,c , Amy M. McKenna b , Matthew A....

178

This paper introduces a methodology for estimation of energy consumption in peripherals such as audio and video devices.  

E-Print Network [OSTI]

ABSTRACT This paper introduces a methodology for estimation of energy consumption in peripherals such as audio and video devices. Peripherals can be responsible for significant amount of the energy consumption in current embedded systems. We introduce a cycle- accurate energy simulator and profiler capable

Simunic, Tajana

179

Lattice construction of pseudopotential Hamiltonians for fractional Chern insulators  

Science Journals Connector (OSTI)

Fractional Chern insulators are novel realizations of fractional quantum Hall states in lattice systems without orbital magnetic field. These states can be mapped onto conventional fractional quantum Hall states through the Wannier state representation [Qi, Phys. Rev. Lett. 107, 126803 (2011)]. In this paper, we use the Wannier state representation to construct the pseudopotential Hamiltonians for fractional Chern insulators, which are interaction Hamiltonians with certain ideal model wave functions as exact ground states. We show that these pseudopotential Hamiltonians can be approximated by short-ranged interactions in fractional Chern insulators, and that their range will be minimized by an optimal gauge choice for the Wannier states. As illustrative examples, we explicitly write down the form of the lowest pseudopotential for several fractional Chern insulator models like the lattice Dirac model, the checkerboard model with Chern number 1, the d-wave model, and the triangular lattice model with Chern number 2. The proposed pseudopotential Hamiltonians have the 1/3 Laughlin state as their ground state when the Chern number C1=1, and a topological nematic (330) state as their ground state when C1=2. Also included are the results of an interpolation between the d-wave model and two decoupled layers of lattice Dirac models, which explicitly demonstrate the relation between C1=2 fractional Chern insulators and bilayer fractional quantum Hall states. The proposed states can be verified by future numerical works and, in particular, provide a model Hamiltonian for the topological nematic states that have not been realized numerically.

Ching Hua Lee and Xiao-Liang Qi

2014-08-06T23:59:59.000Z

180

Characterization and fractionation by ultrafiltration of guayule resin  

E-Print Network [OSTI]

Rubber Production. 2. Solute Flow Through GPC Column. 3. Comparison of UF, MF, and RO Processes. 4. Pressure Gradient in Tubular Membrane. 5. Flow Pattern for Hollow Tube Asymmetric UF Membranes. 6. Structure of an Asymmetric Tubular Membrane. 7... information from the GPC analysis, indicates which compounds were present in each fraction. Identification and separation of potentially valuable fractions in the resin would increase the overall market value of the guayule shrub. Ultrafiltration (UF...

Daly, Monica Ann

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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181

Baytown Xylene Fractionation Energy Reduction using Dynamic Matrix Control (DMC)  

E-Print Network [OSTI]

Baytown Xylene Fractionation Energy Reduction using Dynamic Matrix Control (DMC) IETC 2014 New Orleans, Louisiana David Hokanson ExxonMobil Research and Engineering May 22, 2014 ESL-IE-14-05-33 Proceedings of the Thrity-Sixth Industrial Energy... Technology Conference New Orleans, LA. May 20-23, 2014 2Outline • Baytown Chemical Complex • Xylene Fractionation Overview • Dynamic Matrix Control • Results • Benefits/Wrap-Up ESL-IE-14-05-33 Proceedings of the Thrity-Sixth Industrial Energy Technology...

Hokanson, D.

2014-01-01T23:59:59.000Z

182

Crystal-symmetry preserving Wannier states for fractional Chern insulators  

Science Journals Connector (OSTI)

Recently, many numerical evidences of fractional Chern insulator, i.e., the fractional quantum Hall states on lattices, are proposed when a Chern band is partially filled. Some trial wave functions of fractional Chern insulators can be obtained by mapping the fractional quantum Hall wave functions defined in the continuum onto the lattice through the Wannier state representation [Phys. Rev. Lett. 107, 126803 (2011)] in which the single particle Landau orbits in the Landau levels are identified with the one-dimensional Wannier states of the Chern bands with Chern number C=1. However, this mapping generically breaks the lattice point group symmetry. In this paper we discuss a general approach of modifying the mapping to accommodate the lattice rotational symmetry. The wave functions constructed through this modified mapping should serve as better trial wave functions in the thermodynamical limit and on the rotationally invariant finite lattice. Also these wave functions will form a good basis for the construction of lattice symmetry preserving pseudopotential formalism for fractional Chern insulators. The focus of this paper shall be mainly on the C4 rotational symmetry of square lattices. Similar analysis can be straightforwardly generalized to triangular or hexagonal lattices with C6 symmetry. We also generalize the discussion to the lattice symmetry of fractional Chern insulators with high Chern number bands.

Chao-Ming Jian and Xiao-Liang Qi

2013-10-25T23:59:59.000Z

183

Man B&W introduces new big-bore, two-stroke diesel  

SciTech Connect (OSTI)

The new K98MC-C model introduced by MAN B&W Diesel A/S marks a return to the 980 mm bore class engine. A new market for this class of engine comes from the higher power requirements of faster container ships. The new K98MC-C design is effectively a larger version of the K98MC/MC-C series. The key operating criteria for the K98MC-C engine are similar to those of the other MC engines, notably a mean effective pressure of 18.2 bar and a mean piston speed of 8.32 m/sec. A propeller speed measurement of 104 r/min was selected as the design basis, resulting in a stroke/bore ratio of 2.45 and a cylinder output of 5710 kW. The K98MC-C engine will be available on nine-, 10-, 11-, and 12-cylinder versions, yielding an output of up to 68 520 kW at 104 r/min. 1 fig., 1 tab.

NONE

1995-09-01T23:59:59.000Z

184

Electrical characterization of defects introduced in n-Ge during electron beam deposition or exposure  

SciTech Connect (OSTI)

Schottky barrier diodes prepared by electron beam deposition (EBD) on Sb-doped n-type Ge were characterized using deep level transient spectroscopy (DLTS). Pt EBD diodes manufactured with forming gas in the chamber had two defects, E{sub 0.28} and E{sub 0.31}, which were not previously observed after EBD. By shielding the samples mechanically during EBD, superior diodes were produced with no measureable deep levels, establishing that energetic ions created in the electron beam path were responsible for the majority of defects observed in the unshielded sample. Ge samples that were first exposed to the conditions of EBD, without metal deposition (called electron beam exposure herein), introduced a number of new defects not seen after EBD with only the E-center being common to both processes. Substantial differences were noted when these DLTS spectra were compared to those obtained using diodes irradiated by MeV electrons or alpha particles indicating that very different defect creation mechanisms are at play when too little energy is available to form Frenkel pairs. These observations suggest that when EBD ions and energetic particles collide with the sample surface, inducing intrinsic non-localised lattice excitations, they modify defects deeper in the semiconductor thus rendering them observable.

Coelho, S. M. M.; Auret, F. D.; Janse van Rensburg, P. J.; Nel, J. M. [Department of Physics, University of Pretoria, Private Bag X20, Hatfield, 0028 (South Africa)

2013-11-07T23:59:59.000Z

185

D/H isotopic fractionation between brucite Mg(OH)2 and water from first-principles vibrational modeling  

Science Journals Connector (OSTI)

Isotopic fractionation between two phases can be calculated if the vibrational properties of isotopic end-members are fully characterized. We assessed a theoretical approach based on first-principles density-functional density (DFT) prediction of vibrational frequencies by comparing with spectroscopic data on isotopically substituted brucite, a model mineral for which detailed experimental data on isotopic effects and brucite–water D/H partitioning exist. The deviation from experimental values averages to less than 1% for lattice modes, and 4% for OH stretching modes. The reduced partition function ratio (RPFR) for D/H substitution in brucite was combined with experimental RPFR for water to calculate D/H fractionation factor between water and brucite. Results within the harmonic approximation systematically deviate from experimental data by + 20–25‰. RPFR is very sensitive to the frequency and isotopic shift of high frequency OH stretching modes, for which anharmonic effects are important and usually not explicitly taken introduced in calculations for minerals. The asymmetry of the O–H potential was calculated by DFT and accounts for spectroscopic measurements of the anharmonic shifts of OH stretching mode overtones and isotopic frequency ratio. Calculations of D/H fractionation introducing anharmonic corrections to the RPFR of brucite are fitted with the expression 1000ln?D/H(brucite/H2O) = ? 23.3 103 / T + 2.55 106 / T2 ? 1.51 109 / T3, that yields an improved agreement with experiments at high temperature, but the deviation at 25 °C is ? 30‰. Uncertainties in calculated fractionation factors can arise from dispersion effects or from DFT errors. For instance, a 1% change of the stretching mode frequencies or a 3% change of lattice mode frequencies could account for the discrepancy between model and experimental fractionation factors. The pressure dependence of brucite RPRF was calculated, and is given by 1000ln?Pbrucite = P (? 1.005 103 / T + 2.18 106 / T2 ? 0.213 109 / T3), with P in GPa. The large calculated temperature dependence of the fractionation factor suggests that a single experimental fractionation curve can be fitted to a partial consistent set of experimental data as 1000ln?D/H(brucite/H2O) = ? 27.9(30) 103 / T + 8.8(29) 106 / T2 ? 2.24(63) 109 / T3. These equations allow calculating the temperature and pressure dependence of the D/H fractionation factor between brucite and water in the 300–900 K and 0.1–100 MPa range when combined with the pressure correction for water RPFR [Polyakov, V.B., Horita, J. and Cole, D.R., 2006. Pressure effects on the reduced partition function ratio for hydrogen isotopes in water. Geochimica Cosmochimica Acta, 70: 1904–1913.] for geochemical applications. The DFT model used here for estimating RPFR of the model mineral brucite can be extended to other hydrous minerals using vibrational spectroscopy as a test for the accuracy of the DFT prediction, and the brucite–water equations proposed here as a reference for determining mineral–water fractionation factors and geochemical applications.

Bruno Reynard; Razvan Caracas

2009-01-01T23:59:59.000Z

186

Model of Fractionalization of Faraday Lines in Compact Electrodynamics  

E-Print Network [OSTI]

Motivated by ideas of fractionalization and intrinsic topological order in bosonic models with short-range interactions, we consider similar phenomena in formal lattice gauge theory models. Specifically, we show that a compact quantum electrodynamics (CQED) can have, besides the familiar Coulomb and confined phases, additional unusual confined phases where excitations are quantum lines carrying fractions of the elementary unit of electric field strength. We construct a model that has $N$-tupled monopole condensation and realizes $1/N$ fractionalization of the quantum Faraday lines. This phase has another excitation which is a $Z_N$ quantum surface in spatial dimensions five and higher, but can be viewed as a quantum line or a quantum particle in four or three spatial dimensions respectively. These excitation have statistical interactions with the fractionalized Faraday lines; for example, in three spatial dimensions, the particle excitation picks up a Berry phase of $e^{i2\\pi/N}$ when going around the fractionalized Faraday line excitation. We demonstrate the existence of this phase by Monte Carlo simulations in (3+1) space-time dimensions.

Scott D. Geraedts; Olexei I. Motrunich

2014-08-13T23:59:59.000Z

187

Colloquium: Fractional calculus view of complexity: A tutorial  

Science Journals Connector (OSTI)

The fractional calculus has been part of the mathematics and science literature for 310 years. However, it is only in the past decade or so that it has drawn the attention of mainstream science as a way to describe the dynamics of complex phenomena with long-term memory, spatial heterogeneity, along with nonstationary and nonergodic statistics. The most recent application encompasses complex networks, which require new ways of thinking about the world. Part of the new cognition is provided by the fractional calculus description of temporal and topological complexity. Consequently, this Colloquium is not so much a tutorial on the mathematics of the fractional calculus as it is an exploration of how complex phenomena in the physical, social, and life sciences that have eluded traditional mathematical modeling become less mysterious when certain historical assumptions such as differentiability are discarded and the ordinary calculus is replaced with the fractional calculus. Exemplars considered include the fractional differential equations describing the dynamics of viscoelastic materials, turbulence, foraging, and phase transitions in complex social networks.

Bruce J. West

2014-10-09T23:59:59.000Z

188

Introducing new uncertainty theories into decision-aid methods: application to expert assessment of natural risks in  

E-Print Network [OSTI]

Introducing new uncertainty theories into decision-aid methods: application to expert assessment application cases using possibility, belief function theories and multicriteria decision making are described dam, information imperfection, reliability, expert assessment, multicriteria decision analysis, fuzzy

Paris-Sud XI, Université de

189

Biology of Pediobius furvus (Hymenoptera:Eulophidae): a parasite introduced for the control of Eoreuma loftini (Lepidoptera:Pyralidae)  

E-Print Network [OSTI]

of Pediobius furvus (Hymenoptera:Eulophidae), a Parasite Introduced for the Control of Eoreuma loftini (Lepidoptera:Pyrslidae). (May 1988) Robert Scott Pfannenstiel, B. S. , University of Maryland Baltimore County Co-Chairs of Advisory Committee: Dr... of Pediobius furvus (Hymenoptera:Eulophidae), a Parasite Introduced for the Control of Eoreuma loftini (Lepidoptera:Pyrslidae). (May 1988) Robert Scott Pfannenstiel, B. S. , University of Maryland Baltimore County Co-Chairs of Advisory Committee: Dr...

Pfannenstiel, R. S

2012-06-07T23:59:59.000Z

190

E-Print Network 3.0 - ameliorates fractionated whole-brain Sample...  

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

fractionated whole-brain Search Powered by Explorit Topic List Advanced Search Sample search results for: ameliorates fractionated whole-brain Page: << < 1 2 3 4 5 > >> 1...

191

Pressurized water reactor fuel assembly subchannel void fraction measurement  

SciTech Connect (OSTI)

The void fraction measurement experiment of pressurized water reactor (PWR) fuel assemblies has been conducted since 1987 under the sponsorship of the Ministry of International Trade and Industry as a Japanese national project. Two types of test sections are used in this experiment. One is a 5 x 5 array rod bundle geometry, and the other is a single-channel geometry simulating one of the subchannels in the rod bundle. Wide gamma-ray beam scanners and narrow gamma-ray beam computed tomography scanners are used to measure the subchannel void fractions under various steady-state and transient conditions. The experimental data are expected to be used to develop a void fraction prediction model relevant to PWR fuel assemblies and also to verify or improve the subchannel analysis method. The first series of experiments was conducted in 1992, and a preliminary evaluation of the data has been performed. The preliminary results of these experiments are described.

Akiyama, Yoshiei [Mitsubishi Heavy Industries, Ltd., Yokohama (Japan). Nuclear Fuel and Core Engineering Dept.; Hori, Keiichi [Mitsubishi Heavy Industries, Ltd., Hyougo (Japan); Miyazaki, Keiji [Osaka Univ. (Japan). Faculty of Engineering; Mishima, Kaichiro [Kyoto Univ., Osaka (Japan). Research Reactor Inst.; Sugiyama, Shigekazu [Nuclear Power Engineering Corp., Tokyo (Japan). Nuclear Fuel Dept.

1995-12-01T23:59:59.000Z

192

THE PAIR FRACTION OF MASSIVE GALAXIES AT 0 {<=} z {<=} 3  

SciTech Connect (OSTI)

Using a mass-selected (M{sub *} {>=} 10{sup 11} M{sub Sun }) sample of 198 galaxies at 0 {<=} z {<=} 3.0 with Hubble Space Telescope/NICMOS H{sub 160}-band images from the COSMOS survey, we find evidence for the evolution of the pair fraction above z {approx} 2, an epoch in which massive galaxies are believed to undergo significant structural and mass evolution. We observe that the pair fraction of massive galaxies is 0.15 {+-} 0.08 at 1.7 {<=}z {<=} 3.0, where galaxy pairs are defined as massive galaxies having a companion of flux ratio from 1:1 to 1:4 within a projected separation of 30 kpc. This is slightly lower but still consistent with the pair fraction measured previously in other studies, and the merger fraction predicted in halo-occupation modeling. The redshift evolution of the pair fraction is described by a power law F(z) = (0.07 {+-} 0.04) Multiplication-Sign (1 + z){sup 0.6{+-}0.5}. The merger rate is consistent with no redshift evolution; however it is difficult to constrain due to the limited sample size and the high uncertainties in the merging timescale. Based on the merger rate calculation, we estimate that a massive galaxy undergoes on average 1.1 {+-} 0.5 major mergers from z = 3 to 0. The observed merger fraction is sufficient to explain the number density evolution of massive galaxies, but insufficient to explain the size evolution. This is a hint that mechanism(s) other than major merging may be required to increase the sizes of the massive, compact quiescent galaxies from z {approx} 2 to 0.

Man, Allison W. S.; Toft, Sune; Zirm, Andrew W. [Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen (Denmark); Wuyts, Stijn [Max-Planck-Institut fuer Extraterrestrische Physik, Garching bei Muenchen (Germany); Van der Wel, Arjen, E-mail: allison@dark-cosmology.dk, E-mail: sune@dark-cosmology.dk, E-mail: azirm@dark-cosmology.dk, E-mail: swuyts@mpe.mpg.de, E-mail: vdwel@mpia.de [Max-Planck-Institut fuer Astronomie, Heidelberg (Germany)

2012-01-10T23:59:59.000Z

193

Fluorescent spectra of chromatographic fractions of crude oils  

E-Print Network [OSTI]

Number 4 exhibits the j400 Ao peak. Again all Fig. 7 0 Fluorescent Spectra of n-heptane Fraction, Cut No. 2 ()) 0 fE 30 ( 3) / (lI I I I I (&) )/ I 000 travelength in Ao significant intensity ranges from 3400 A to 4600 A... as $ Transnlssion Cyclohexane Fraction 7'ave Length& Ao Relative Fluorescent Intensity ude o 3000 3100 3200 3300 3400 3500 3600 3F' jwo 4100 4200 4300 4400 4500 4600 QOO 4900 5000 5200 5400 56OO 5'800 6000 65oo 7000 Oe0 Oeo O. e 2 ' 4...

Dixon, William Samuel

2012-06-07T23:59:59.000Z

194

Separation of carbon nanotubes into chirally enriched fractions  

DOE Patents [OSTI]

A mixture of single-walled carbon nanotubes ("SWNTs") is separated into fractions of enriched chirality by preparing an aqueous suspension of a mixture of SWNTs and a surfactant, injecting a portion of the suspension on a column of separation medium having a density gradient, and centrifuging the column. In some embodiments, salt is added prior to centrifugation. In other embodiments, the centrifugation is performed at a temperature below room temperature. Fractions separate as colored bands in the column. The diameter of the separated SWNTs decreases with increasing density along the gradient of the column. The colored bands can be withdrawn separately from the column.

Doorn, Stephen K. (Los Alamos, NM); Niyogi, Sandip (Los Alamos, NM)

2012-04-10T23:59:59.000Z

195

Airborne release fractions/rates and respirable fractions for nonreactor nuclear facilities. Volume 1, Analysis of experimental data  

SciTech Connect (OSTI)

This handbook contains (1) a systematic compilation of airborne release and respirable fraction experimental data for nonreactor nuclear facilities, (2) assessments of the data, and (3) values derived from assessing the data that may be used in safety analyses when the data are applicable. To assist in consistent and effective use of this information, the handbook provides: identification of a consequence determination methodology in which the information can be used; discussion of the applicability of the information and its general technical limits; identification of specific accident phenomena of interest for which the information is applicable; and examples of use of the consequence determination methodology and airborne release and respirable fraction information.

Not Available

1994-12-01T23:59:59.000Z

196

Process for removing polymer-forming impurities from naphtha fraction  

DOE Patents [OSTI]

Polymer precursor materials are vaporized without polymerization or are removed from a raw naphtha fraction by passing the raw naphtha to a vaporization zone and vaporizing the naphtha in the presence of a wash oil while stripping with hot hydrogen to prevent polymer deposits in the equipment. 2 figs.

Kowalczyk, D.C.; Bricklemyer, B.A.; Svoboda, J.J.

1983-12-27T23:59:59.000Z

197

Empirical Relationships for Estimating Liquid Water Fraction of Melting Snowflakes  

Science Journals Connector (OSTI)

The liquid water fraction of individual snowflakes f is an important parameter when calculating the radar reflectivity of a melting layer. A ground-based observation of f at Nagaoka, Japan, was conducted by using dye-treated filter papers that ...

Ryohei Misumi; Hiroki Motoyoshi; Satoru Yamaguchi; Sento Nakai; Masaaki Ishizaka; Yasushi Fujiyoshi

2014-10-01T23:59:59.000Z

198

Hydrogen isotope fractionation in algae: III. Theoretical interpretations  

Science Journals Connector (OSTI)

Abstract Hydrogen isotope measurements of lipid biomarkers preserved in sediments are most commonly interpreted as qualitative, rather than quantitative indicators of paleoprecipitation owing to an imperfect knowledge of all factors controlling the isotopic fractionation occurring during biosynthesis. Here, we first offer a brief review of appropriate procedures for preparing enriched isotope substrates for use in tracer studies and outline the approximate ?D threshold at which this transition occurs. We then present new interpretations to explain deviations from common stable isotope effects observed in our previous culture experiments and other studies. We draw particular attention to the disagreement between intercept and slope for product–substrate relationships from those predicted for isotope systems, even when R2 values are high, and attribute it to kinetic isotope fractionation. We demonstrate that reconstructing paleoenvironmental water ?D values by simply adding a ? to measured biomarkers ?D values will result in a bias toward deuterium enriched values. This applies even to implicit reconstructions in the form of qualitative interpretations of measured lipid ?D values as indicators of past hydroclimate. We therefore recommend reconstructing water ?D values from lipid ?D values using fractionation factor (?). We also discuss the apparently contradictory increase in D/H fractionation observed at elevated temperature and suggest that this may be the result of the unique wave-particle duality of hydrogen isotopes, which permits isotopologues to avoid surmounting the activation energy barrier that is necessary in traditional kinetic reactions.

Zhaohui Zhang; Daniel B. Nelson; Julian P. Sachs

2014-01-01T23:59:59.000Z

199

Branch length distribution in TREF fractionated polyethylene Ramnath Ramachandran a  

E-Print Network [OSTI]

Branch length distribution in TREF fractionated polyethylene Ramnath Ramachandran a , Gregory Keywords: Polyethylene Branching Neutron scattering a b s t r a c t Commercial polyethylene is typically and catalyst activity. Further, processing of polyethylene after polymerization may also result in changes

Beaucage, Gregory

200

FRACTIONAL SKEW MONOID RINGS P. ARA, M.A. GONZ  

E-Print Network [OSTI]

FRACTIONAL SKEW MONOID RINGS P. ARA, M.A. GONZ â?? ALEZ­BARROSO, K.R. GOODEARL, AND E. PARDO FQM­298 of the Junta de Andalucâ??�a. 1 #12; 2 P. ARA, M.A. GONZ â?? ALEZ­BARROSO, K.R. GOODEARL, AND E

Bigelow, Stephen

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Measurement of the B semileptonic branching fraction with lepton tags  

E-Print Network [OSTI]

We have used the CLEO II detector and 2.06 fb(-1) of Y(4S) data to measure the B-meson semileptonic branching fraction. The B --> Xe nu momentum spectrum was obtained over nearly the full momentum range by using charge and kinematic correlations...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan

1996-03-01T23:59:59.000Z

202

Effect of Number of Fractionating Trays on Reactive Distillation Performance  

E-Print Network [OSTI]

Effect of Number of Fractionating Trays on Reactive Distillation Performance Muhammad A. Al and rectifying sec- tions of a reacti®e distillation column can degrade performance. This effect, if true®e distillation columns cannot use conser®ati®e estimates of tray numbers, that is, we cannot simply add excess

Al-Arfaj, Muhammad A.

203

A DISTRIBUTED SHARED KEY GENERATION PROCEDURE USING FRACTIONAL KEYS  

E-Print Network [OSTI]

A DISTRIBUTED SHARED KEY GENERATION PROCEDURE USING FRACTIONAL KEYS R. Poovendran, M. S. Corson, J}@isr.umd.edu ABSTRACT W e present a new class of distributed key generation and recovery algorithms suitable for group) with a Group Con- troller (GC) which can generate and distribute the keys. However, in these approaches

Baras, John S.

204

Hydrogen isotope fractionation during lipid biosynthesis by Tetrahymena thermophila  

E-Print Network [OSTI]

Hydrogen isotope fractionation during lipid biosynthesis by Tetrahymena thermophila Sitindra S Accepted 7 September 2013 Available online 16 September 2013 a b s t r a c t Hydrogen isotope ratio values from recording the hydrogen isotope composition of ambient water, dD values of lipids also depend

205

Optical transformation from chirplet to fractional Fourier transformation kernel  

E-Print Network [OSTI]

We find a new integration transformation which can convert a chirplet function to fractional Fourier transformation kernel, this new transformation is invertible and obeys Parseval theorem. Under this transformation a new relationship between a phase space function and its Weyl-Wigner quantum correspondence operator is revealed.

Hong-yi Fan; Li-yun Hu

2009-02-11T23:59:59.000Z

206

Parameter Estimation Using Dual Fractional Power Filters Jason M. Kinser  

E-Print Network [OSTI]

by the user, they only have to be contained within the training set. A dual filter system will be created from an unknown input from the training set was operated on by the filter the constraint value associatedParameter Estimation Using Dual Fractional Power Filters Jason M. Kinser The Institute

Kinser, Jason M.

207

Assessment of the corrosivity of crude fractions from varying feedstock  

SciTech Connect (OSTI)

Crude corrosivity is becoming a critical issue because of frequent variation of feedstock based on spot market opportunities and high sulfur and naphthenic acid content of low cost crudes. The choice of remediation methods (blending, inhibition, upgrading, and/or process changes) depends on accurate prediction of the corrosivity of these crudes. This paper presents the results of autoclave and flow loop runs conducted to assess the corrosivity of Middle East, Shengli, and Bachequero-13 crudes fractions on several materials used in refinery construction. Autoclave tests were conducted in vacuum heater feed line (VHFL) and Asphalt`s fractions from each crude and in atmospheric gas oil (AGO) and heavy vacuum gas oil (HVGO) from the Bachequero-13. Flow loop tests were conducted only on the VHFL`s of each crude. As expected, the test results showed a major increase in corrosion rate with increasing temperature. Corrosion rates were generally less than 10 mpy for all materials at up to 300 C. At 400 C, corrosion rates on the low Cr steels (0 to 5 Cr) were generally around 100 mpy. For the Middle East and Shengli oils, the asphalt`s were more corrosive than the VHFL cuts. Only slight differences were found in the corrosivity of these two oils. By comparison, the Bachequero-13 fractions were generally more corrosive than those from the Shengli or the Middle Eastern crudes. At 200 ft/s (67 m/s), the corrosion rates of the carbon steel specimens were high in the Middle Eastern fraction compared to the Bachequero-13 and Shengli fractions.

Tebbal, S.; Kane, R.D. [CLI International, Inc., Houston, TX (United States); Yamada, Kazuo [Japan Energy Corp., Okayama (Japan)

1997-09-01T23:59:59.000Z

208

the Fractional Flotation of Flotation Column Particles Opportunity  

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

Enhancing Selectivity and Recovery in Enhancing Selectivity and Recovery in the Fractional Flotation of Flotation Column Particles Opportunity Although research is currently inactive on the patented technology "Method for Enhancing Selectivity and Recovery in the Fractional Flotation of Flotation Column Particles," the technology is available for licensing from the U.S. Department of Energy's National Energy Technology Laboratory (NETL). Disclosed in this patent is a method of particle separation from a feed stream comprised of particles of varying hydrophobicity by injecting the feed stream directly into the froth zone of a vertical flotation column in the presence of a counter-current reflux stream. The current invention allows the height of the feed stream injection and the reflux ratio to be

209

The fraction of double degenerates among DA white dwarfs  

E-Print Network [OSTI]

We present the results of a radial velocity survey designed to measure the fraction of double degenerates among DA white dwarfs. The narrow core of the H-alpha line was observed twice or more for 46 white dwarfs yielding radial velocities accurate to a few km/s. This makes our survey the most sensitive to the detection of double degenerates undertaken to date. We found no new double degenerates in our sample, though H-alpha emission from distant companions is seen in two systems. Two stars known to be double degenerates prior to our observations are included in the analysis. We find a 95% probability that the fraction of double degenerates among DA white dwarfs lies in the range [0.017,0.19].

P. F. L. Maxted; T. R. Marsh

1999-01-20T23:59:59.000Z

210

Branching Fraction Measurement of B to omega l nu decays  

SciTech Connect (OSTI)

We present a measurement of the B{sup +} {yields} {omega}{ell}{sup +}{nu} branching fraction based on a sample of 467 million B{bar B} pairs recorded by the BABAR detector at the SLAC PEP-II e{sup +}e{sup -} collider. We observe 1041 {+-} 133 signal decays, corresponding to a branching fraction of {Beta}(B{sup +} {yields} {omega}{ell}{sup +}{nu}) = (1.15 {+-} 0.15 {+-} 0.12) x 10{sup -4}, where the first error is statistical and the second is systematic. The dependence of the decay rate on q{sup 2}, the momentum transfer squared to the lepton system, is compared to QCD predictions of the form factors based on a quark model and light-cone sum rules.

Lees, J.P.; Poireau, V.; Tisserand, V.; /Annecy, LAPP; Garra Tico, J.; Grauges, E.; /Barcelona U., ECM; Palano, A.; /Bari U. /INFN, Bari; Eigen, G.; Stugu, B.; /Bergen U.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; /LBL, Berkeley /UC, Berkeley; Koch, H.; Schroeder, T.; /Ruhr U., Bochum; Asgeirsson, D.J.; Hearty, C.; Mattison, T.S.; McKenna, J.A.; So, R.Y.; /British Columbia U.; Khan, A.; /Brunel U.; Blinov, V.E.; /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /Ferrara U. /INFN, Ferrara /Frascati /Genoa U. /INFN, Genoa /Indian Inst. Tech., Guwahati /Harvard U. /Harvey Mudd Coll. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Orsay, LAL /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U., Comp. Sci. Dept. /Maryland U. /Massachusetts U., Amherst /MIT /McGill U. /Milan U. /INFN, Milan /Mississippi U. /Montreal U. /Naples U. /INFN, Naples /NIKHEF, Amsterdam /Notre Dame U. /Ohio State U.; /more authors..

2012-06-13T23:59:59.000Z

211

Precision measurement of the $D^{*0}$ decay branching fractions  

E-Print Network [OSTI]

Using 482 pb$^{-1}$ of data taken at $\\sqrt{s}=4.009$ GeV, we measure the branching fractions of the decays of $D^{*0}$ into $D^0\\pi^0$ and $D^0\\gamma$ to be $\\BR(D^{*0} \\to D^0\\pi^0)=(65.5\\pm 0.8\\pm 0.5)%$ and $\\BR(D^{*0} \\to D^0\\gamma)=(34.5\\pm 0.8\\pm 0.5)%$ respectively, by assuming that the $D^{*0}$ decays only into these two modes. The ratio of the two branching fractions is $\\BR(D^{*0} \\to D^0\\pi^0)/\\BR(D^{*0} \\to D^0\\gamma) =1.90\\pm 0.07\\pm 0.05$, which is independent of the assumption made above. The first uncertainties are statistical and the second ones systematic. The precision is improved by a factor of three compared to the present world average values.

M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; A. Amoroso; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; D. Bettoni; J. M. Bian; F. Bianchi; E. Boger; O. Bondarenko; I. Boyko; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. Chelkov; G. Chen; H. S. Chen; H. Y. Chen; J. C. Chen; M. L. Chen; S. J. Chen; X. Chen; X. R. Chen; Y. B. Chen; H. P. Cheng; X. K. Chu; G. Cibinetto; D. Cronin-Hennessy; H. L. Dai; J. P. Dai; A. Dbeyssi; D. Dedovich; Z. Y. Deng; A. Denig; I. Denysenko; M. Destefanis; F. De Mori; Y. Ding; C. Dong; J. Dong; L. Y. Dong; M. Y. Dong; S. X. Du; P. F. Duan; J. Z. Fan; J. Fang; S. S. Fang; X. Fang; Y. Fang; L. Fava; F. Feldbauer; G. Felici; C. Q. Feng; E. Fioravanti; M. Fritsch; C. D. Fu; Q. Gao; Y. Gao; I. Garzia; K. Goetzen; W. X. Gong; W. Gradl; M. Greco; M. H. Gu; Y. T. Gu; Y. H. Guan; A. Q. Guo; L. B. Guo; T. Guo; Y. Guo; Y. P. Guo; Z. Haddadi; A. Hafner; S. Han; Y. L. Han; F. A. Harris; K. L. He; Z. Y. He; T. Held; Y. K. Heng; Z. L. Hou; C. Hu; H. M. Hu; J. F. Hu; T. Hu; Y. Hu; G. M. Huang; G. S. Huang; H. P. Huang; J. S. Huang; X. T. Huang; Y. Huang; T. Hussain; Q. Ji; Q. P. Ji; X. B. Ji; X. L. Ji; L. L. Jiang; L. W. Jiang; X. S. Jiang; J. B. Jiao; Z. Jiao; D. P. Jin; S. Jin; T. Johansson; A. Julin; N. Kalantar-Nayestanaki; X. L. Kang; X. S. Kang; M. Kavatsyuk; B. C. Ke; R. Kliemt; B. Kloss; O. B. Kolcu; B. Kopf; M. Kornicer; W. Kuehn; A. Kupsc; W. Lai; J. S. Lange; M. Lara; P. Larin; C. H. Li; Cheng Li; D. M. Li; F. Li; G. Li; H. B. Li; J. C. Li; Jin Li; K. Li; K. Li; P. R. Li; T. Li; W. D. Li; W. G. Li; X. L. Li; X. M. Li; X. N. Li; X. Q. Li; Z. B. Li; H. Liang; Y. F. Liang; Y. T. Liang; G. R. Liao; D. X. Lin; B. J. Liu; C. L. Liu; C. X. Liu; F. H. Liu; Fang Liu; Feng Liu; H. B. Liu; H. H. Liu; H. H. Liu; H. M. Liu; J. Liu; J. P. Liu; J. Y. Liu; K. Liu; K. Y. Liu; L. D. Liu; P. L. Liu; Q. Liu; S. B. Liu; X. Liu; X. X. Liu; Y. B. Liu; Z. A. Liu; Zhiqiang Liu; Zhiqing Liu; H. Loehner; X. C. Lou; H. J. Lu; J. G. Lu; R. Q. Lu; Y. Lu; Y. P. Lu; C. L. Luo; M. X. Luo; T. Luo; X. L. Luo; M. Lv; X. R. Lyu; F. C. Ma; H. L. Ma; L. L. Ma; Q. M. Ma; S. Ma; T. Ma; X. N. Ma; X. Y. Ma; F. E. Maas; M. Maggiora; Q. A. Malik; Y. J. Mao; Z. P. Mao; S. Marcello; J. G. Messchendorp; J. Min; T. J. Min; R. E. Mitchell; X. H. Mo; Y. J. Mo; C. Morales Morales; K. Moriya; N. Yu. Muchnoi; H. Muramatsu; Y. Nefedov; F. Nerling; I. B. Nikolaev; Z. Ning; S. Nisar; S. L. Niu; X. Y. Niu; S. L. Olsen; Q. Ouyang; S. Pacetti; P. Patteri; M. Pelizaeus; H. P. Peng; K. Peters; J. L. Ping; R. G. Ping; R. Poling; Y. N. Pu; M. Qi; S. Qian; C. F. Qiao; L. Q. Qin; N. Qin; X. S. Qin; Y. Qin; Z. H. Qin; J. F. Qiu; K. H. Rashid; C. F. Redmer; H. L. Ren; M. Ripka; G. Rong; X. D. Ruan; V. Santoro; A. Sarantsev; M. Savrié; K. Schoenning; S. Schumann; W. Shan; M. Shao; C. P. Shen; P. X. Shen; X. Y. Shen; H. Y. Sheng; M. R. Shepherd; W. M. Song; X. Y. Song; S. Sosio; S. Spataro; B. Spruck; G. X. Sun; J. F. Sun; S. S. Sun; Y. J. Sun; Y. Z. Sun; Z. J. Sun; Z. T. Sun; C. J. Tang; X. Tang; I. Tapan; E. H. Thorndike; M. Tiemens; D. Toth; M. Ullrich; I. Uman; G. S. Varner; B. Wang; B. L. Wang; D. Wang; D. Y. Wang; K. Wang; L. L. Wang; L. S. Wang; M. Wang; P. Wang; P. L. Wang; Q. J. Wang; S. G. Wang; W. Wang; X. F. Wang; Y. D. Wang; Y. F. Wang; Y. Q. Wang; Z. Wang; Z. G. Wang; Z. H. Wang; Z. Y. Wang; T. Weber; D. H. Wei; J. B. Wei; P. Weidenkaff; S. P. Wen; U. Wiedner; M. Wolke; L. H. Wu; Z. Wu; L. G. Xia; Y. Xia; D. Xiao; Z. J. Xiao; Y. G. Xie; G. F. Xu; L. Xu; Q. J. Xu; Q. N. Xu; X. P. Xu; L. Yan; W. B. Yan; W. C. Yan; Y. H. Yan; H. X. Yang; L. Yang; Y. Yang; Y. X. Yang; H. Ye; M. Ye; M. H. Ye; J. H. Yin; B. X. Yu; C. X. Yu; H. W. Yu; J. S. Yu; C. Z. Yuan; W. L. Yuan; Y. Yuan; A. Yuncu; A. A. Zafar; A. Zallo; Y. Zeng; B. X. Zhang; B. Y. Zhang; C. Zhang; C. C. Zhang; D. H. Zhang; H. H. Zhang; H. Y. Zhang; J. J. Zhang; J. L. Zhang; J. Q. Zhang; J. W. Zhang; J. Y. Zhang; J. Z. Zhang; K. Zhang; L. Zhang; S. H. Zhang; X. Y. Zhang; Y. Zhang; Y. H. Zhang; Z. H. Zhang; Z. P. Zhang; Z. Y. Zhang; G. Zhao; J. W. Zhao; J. Y. Zhao; J. Z. Zhao; Lei Zhao; Ling Zhao; M. G. Zhao; Q. Zhao; Q. W. Zhao; S. J. Zhao; T. C. Zhao; Y. B. Zhao; Z. G. Zhao; A. Zhemchugov; B. Zheng; J. P. Zheng; W. J. Zheng; Y. H. Zheng; B. Zhong; L. Zhou; Li Zhou; X. Zhou; X. K. Zhou; X. R. Zhou; X. Y. Zhou; K. Zhu; K. J. Zhu; S. Zhu; X. L. Zhu; Y. C. Zhu; Y. S. Zhu; Z. A. Zhu; J. Zhuang; B. S. Zou; J. H. Zou; for BESIII Collaboration

2014-12-15T23:59:59.000Z

212

Method and apparatus for probing relative volume fractions  

DOE Patents [OSTI]

A relative volume fraction probe particularly for use in a multiphase fluid system includes two parallel conductive paths defining therebetween a sample zone within the system. A generating unit generates time varying electrical signals which are inserted into one of the two parallel conductive paths. A time domain reflectometer receives the time varying electrical signals returned by the second of the two parallel conductive paths and, responsive thereto, outputs a curve of impedance versus distance. An analysis unit then calculates the area under the curve, subtracts the calculated area from an area produced when the sample zone consists entirely of material of a first fluid phase, and divides this calculated difference by the difference between an area produced when the sample zone consists entirely of material of the first fluid phase and an area produced when the sample zone consists entirely of material of a second fluid phase. The result is the volume fraction. 9 figs.

Jandrasits, W.G.; Kikta, T.J.

1998-03-17T23:59:59.000Z

213

Statistical analysis of the induced Basel 2006 earthquake sequence: introducing a probability-based monitoring approach for Enhanced Geothermal Systems  

Science Journals Connector (OSTI)

......into time-dependent risk, is then the next logical...introduced time-dependent risk assessment at a local...integral part of any insurance scheme implemented for...does not come without a risk, as it is the case for...b)-is ultimately a political process. We see our......

C. E. Bachmann; S. Wiemer; J. Woessner; S. Hainzl

2011-08-01T23:59:59.000Z

214

Overview for the Biofuels Unit This set of three laboratory experiments introduces students to biofuels. These labs,  

E-Print Network [OSTI]

Overview for the Biofuels Unit This set of three laboratory experiments introduces students to biofuels. These labs, which can be run in three consecutive weeks, give students the opportunity to explore the chemical properties of biofuels from three different perspectives. During the first week students

215

The theory of rough sets, introduced by Pawlak in 1982, has recently emerged as a major mathe-  

E-Print Network [OSTI]

Preface The theory of rough sets, introduced by Pawlak in 1982, has recently emerged as a major. The focus of rough set theory is on the ambi- guity caused by limited discernibility of objects, rough set theory and granular computation has proven to be another soft com- puting tool which

Pal, Sankar Kumar

216

Dear Sir or Madam, The Masaryk University in Brno and the Prague Security Studies Institute are proud to introduce the  

E-Print Network [OSTI]

is now opened for applications. For more information about the content and applications click here: http://energy are proud to introduce the second joint winter school on energy security. The winter school, the title of which is ,,The Future of Energy Security", will take place in Prague from February 10 ­ 14, 2014

Herrmann, Samuel

217

Lab 2: Blinkie Lab This lab introduces the Arduino Uno as students will need to use the Arduino to control  

E-Print Network [OSTI]

Lab 2: Blinkie Lab Objectives This lab introduces the Arduino Uno as students will need to use the Arduino to control their final robot. Students will build a basic circuit on their prototyping board and wire the board to the Arduino. Students will learn the basic programming structure for the Arduino

Wedeward, Kevin

218

EEE 565 Solar Cells Course Objective: To introduce the basic concepts of the operation of photovoltaic devices, the  

E-Print Network [OSTI]

Energy Conversion, Solar Spectrum, Light Absorption (1 week) 2) Background on Semiconductor Material) Heterojunction Solar Cells (1 week) 6) Multi-junction Solar Cells (1 week) 7) Light Management (1 week) 8EEE 565 Solar Cells Fall 2012 Course Objective: To introduce the basic concepts of the operation

Zhang, Junshan

219

Lab #3 Programmable Logic To introduce basic concepts of ROM devices and their application. To demonstrate the use of a  

E-Print Network [OSTI]

Lab #3 Programmable Logic Objective: To introduce basic concepts of ROM devices systems. These include readonly memory (ROM) devices of several forms such as EPROM and EEPROM (Flash for this lab. ROM #12;Readonlymemory is available in several forms including factoryprogrammed devices (not

Wu, Xiaolin

220

Off-grid energy services for the poor: Introducing LED lighting in the Millennium Villages Project in Malawi  

E-Print Network [OSTI]

Off-grid energy services for the poor: Introducing LED lighting in the Millennium Villages Project 2009 Keywords: Solar Lighting Development a b s t r a c t Lanterns that use light-emitting diodes (LEDs as a cost-competitive alternative to kerosene and other fuel-based lighting technologies, offering brighter

Modi, Vijay

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Abstract--In this paper, we introduce a new automatic method for electrocardiogram (ECG) artifact elimination from  

E-Print Network [OSTI]

5204 Abstract-- In this paper, we introduce a new automatic method for electrocardiogram (ECG using a single-channel EEG (or EOG) and the ECG. To check the effectiveness of our approach, we compared recordings containing ECG artifacts and other typical artifacts (e.g. movement, sweat, respiration, etc

Dupont, Stéphane

222

Sorting by Periodic Potential Energy Landscapes: Optical Fractionation  

E-Print Network [OSTI]

Viscously damped objects driven through a periodically modulated potential energy landscape can become kinetically locked in to commensurate directions through the landscape, and thus can be deflected away from the driving direction. We demonstrate that the threshold for an object to become kinetically locked in to an array can depend exponentially on its size. When implemented with an array of holographic optical tweezers, this provides the basis for a continuous and continuously optimized sorting technique for mesoscopic objects called ``optical fractionation''.

Kosta Ladavac; Karen Kasza; David G. Grier

2003-10-16T23:59:59.000Z

223

On the fractional Black-Scholes market with transaction costs  

E-Print Network [OSTI]

We consider fractional Black-Scholes market with proportional transaction costs. When transaction costs are present, one trades periodically i.e. we have the discrete trading with equidistance $n^{-1}$ between trading times. We derive a non trivial hedging error for a class of European options with convex payoff in the case when the transaction costs coefficients decrease as $n^{-(1-H)}$. We study the expected hedging error and asymptotic behavior of the hedge as $H \\to 1/2$

Azmoodeh, Ehsan

2010-01-01T23:59:59.000Z

224

The binary fraction of extreme horizontal branch stars  

E-Print Network [OSTI]

(Abbreviated) We have used precise radial velocity measurements of subdwarf-B stars from the Palomar-Green catalogue to look for binary extreme horizontal branch (EHB) stars. We identify 36 EHB stars in our sample and find that at least 21 of these stars are binaries. All but one or two of these are new identifications. The minimum binary fraction for EHB stars implied by our survey is 60+-8%. Our survey is sensitive to binaries with orbital periods P less than about 10d. For reasonable assumptions concerning the period distribution and the mass ratio distribution of the binaries, we find that the mean detection efficiency of our survey over this range of orbital periods is 87%. Allowing for this estimated detection efficiency, the fraction of EHB stars which are short-period binaries ($0.03 < P <10d, approximately) is 69+-9%. The value is not strongly dependent on the period distribution below P=10d or the mean companion mass for these short-period binaries. The orbital separation of the stars in these binaries is much less than the size of the red giant from which the EHB star has formed. This is strong evidence that binary star evolution is fundamental to the formation of the majority of EHB stars. If there are also binary EHB stars whose orbital periods are more than about 10d, the fraction of EHB stars whose evolution has been affected by the presence of a companion may be much higher.

P. F. L. Maxted; U. Heber; T. R. Marsh; R. C. North

2001-03-21T23:59:59.000Z

225

Evaluation of white matter myelin water fraction in chronic stroke  

Science Journals Connector (OSTI)

Abstract Multi-component T2 relaxation imaging (MCRI) provides specific in vivo measurement of myelin water content and tissue water environments through myelin water fraction (MWF), intra/extra-cellular water fraction (I/EWF) and intra/extracellular and global geometric mean T2 (GMT2) times. Quantitative MCRI assessment of tissue water environments has provided new insights into the progression and underlying white matter pathology in neural disorders such as multiple sclerosis. It has not previously been applied to investigate changes in white matter in the stroke-affected brain. Thus, the purposes of this study were to 1) use MCRI to index myelin water content and tissue water environments in the brain after stroke 2) evaluate relationships between MWF and diffusion behavior indexed by diffusion tensor imaging-based metrics and 3) examine the relationship between white matter status (MWF and fractional anisotropy) and motor behavior in the chronic phase of stroke recovery. Twenty individuals with ischemic stroke and 12 matched healthy controls participated. Excellent to good test/re-test and inter-rater reliability was observed for region of interest-based voxelwise MWF data. Reduced MWF was observed in whole-cerebrum white matter (p motor behavior in chronic stroke. These results provide novel insights into tissue-specific changes within white matter after stroke that may have important applications for the understanding of the neuropathology of stroke.

M.R. Borich; A.L. MacKay; I.M. Vavasour; A. Rauscher; L.A. Boyd

2013-01-01T23:59:59.000Z

226

Fractionation of reformate: A new variant of gasoline production technology  

SciTech Connect (OSTI)

The Novo-Ufa Petroleum Refinery is the largest domestic producer of the unique high-octane unleaded automotive gasolines AI-93 and AI-95 and the aviation gasolines B-91/115 and B-92. The base component for these gasolines is obtained by catalytic reforming of wide-cut naphtha; this basic component is usually blended with certain other components that are expensive and in short supply: toluene, xylenes, and alkylate. For example, the unleaded gasoline AI-93 has been prepared by blending reformate, alkylate, and toluene in a 65:20:15 weight ratio; AI-95 gasoline by blending alkylate and xylenes in an 80:20 weight ratio; and B-91/115 gasoline by compounding a reformate obtained with light straight-run feed, plus alkylate and toluene, in a 55:35:10 weight ratio. Toluene and xylenes have been obtained by process schemes that include the following consecutive processes: redistillation of straight-run naphtha cuts to segregate the required narrow fraction; catalytic reforming (Platforming) of the narrow toluene-xylene straight-run fraction; azeotropic distillation of the reformate to recover toluene and xylenes. A new technology based on the use of reformate fractions is proposed.

Karakuts, V.N.; Tanatarov, M.A.; Telyashev, G.G. [and others

1995-07-01T23:59:59.000Z

227

DOE-HDBK-3010-94; Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume II  

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

3010-94 3010-94 December 1994 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume II - Appendices U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE95004711 DOE-HDBK-3010-94 Page i VOLUME II: APPENDICES APPENDIX A

228

A Physically Based Framework for Modelling the Organic Fractionation of Sea Spray Aerosol from Bubble Film Langmuir Equilibria  

SciTech Connect (OSTI)

The presence of a large fraction of organic matter in primary sea spray aerosol (SSA) can strongly affect its cloud condensation nuclei activity and interactions with marine clouds. Global climate models require new parameterizations of the SSA composition in order to improve the representation of these processes. Existing proposals for such a parameterization use remotely-sensed chlorophyll-a concentrations as a proxy for the biogenic contribution to the aerosol. However, both observations and theoretical considerations suggest that existing relationships with chlorophyll-a, derived from observations at only a few locations, may not be representative for all ocean regions. We introduce a novel framework for parameterizing the fractionation of marine organic matter into SSA based on a competitive Langmuir adsorption equilibrium at bubble surfaces. Marine organic matter is partitioned into classes with differing molecular weights, surface excesses, and Langmuir adsorption parameters. The classes include a lipid-like mixture associated with labile dissolved organic carbon (DOC), a polysaccharide-like mixture associated primarily with semi-labile DOC, a protein-like mixture with concentrations intermediate between lipids and polysaccharides, a processed mixture associated with recalcitrant surface DOC, and a deep abyssal humic-like mixture. Box model calculations have been performed for several cases of organic adsorption to illustrate the underlying concepts. We then apply the framework to output from a global marine biogeochemistry model, by partitioning total dissolved organic carbon into several classes of macromolecule. Each class is represented by model compounds with physical and chemical properties based on existing laboratory data. This allows us to globally map the predicted organic mass fraction of the nascent submicron sea spray aerosol. Predicted relationships between chlorophyll-\\textit{a} and organic fraction are similar to existing empirical parameterizations, but can vary between biologically productive and non-productive regions, and seasonally within a given region. Major uncertainties include the bubble film thickness at bursting and the variability of organic surfactant activity in the ocean, which is poorly constrained. In addition, marine colloids and cooperative adsorption of polysaccharides may make important contributions to the aerosol, but are not included here. This organic fractionation framework is an initial step towards a closer linking of ocean biogeochemistry and aerosol chemical composition in Earth system models. Future work should focus on improving constraints on model parameters through new laboratory experiments or through empirical fitting to observed relationships in the real ocean and atmosphere, as well as on atmospheric implications of the variable composition of organic matter in sea spray.

Burrows, Susannah M.; Ogunro, O.; Frossard, Amanda; Russell, Lynn M.; Rasch, Philip J.; Elliott, S.

2014-12-19T23:59:59.000Z

229

Behavior of introduced red drum and habitat-use overlap with largemouth bass in a power-plant cooling reservoir  

E-Print Network [OSTI]

for the degree of MASTER OF SCIENCE December 1989 Major Subject: Wildlife and Fisheries Sciences BEHAVIOR OF INTRODUCED RED DRUM AND HABITAT-USE OVERLAP WITH LARGEMOUTH BASS IN A POWER-P~ COOLING RESERVOIR A Thesis by ROBERT CLAYTON SMITH Approved... Power-Plant Cooling Reservoir (December 1989) Robert Clayton Smith, B. S. , Loyola University Chair of Advisory Committee: Dr. Brian R. Murphy The introduction of a non-native species into an aquatic community is a fisheries management practice...

Smith, Robert Clayton

1989-01-01T23:59:59.000Z

230

Fractionated Stereotactic Radiotherapy of Vestibular Schwannomas Accelerates Hearing Loss  

SciTech Connect (OSTI)

Objective: To evaluate long-term tumor control and hearing preservation rates in patients with vestibular schwannoma treated with fractionated stereotactic radiotherapy (FSRT), comparing hearing preservation rates to an untreated control group. The relationship between radiation dose to the cochlea and hearing preservation was also investigated. Methods and Materials: Forty-two patients receiving FSRT between 1997 and 2008 with a minimum follow-up of 2 years were included. All patients received 54 Gy in 27-30 fractions during 5.5-6.0 weeks. Clinical and audiometry data were collected prospectively. From a 'wait-and-scan' group, 409 patients were selected as control subjects, matched by initial audiometric parameters. Radiation dose to the cochlea was measured using the original treatment plan and then related to changes in acoustic parameters. Results: Actuarial 2-, 4-, and 10-year tumor control rates were 100%, 91.5%, and 85.0%, respectively. Twenty-one patients had serviceable hearing before FSRT, 8 of whom (38%) retained serviceable hearing at 2 years after FSRT. No patients retained serviceable hearing after 10 years. At 2 years, hearing preservation rates in the control group were 1.8 times higher compared with the group receiving FSRT (P=.007). Radiation dose to the cochlea was significantly correlated to deterioration of the speech reception threshold (P=.03) but not to discrimination loss. Conclusion: FSRT accelerates the naturally occurring hearing loss in patients with vestibular schwannoma. Our findings, using fractionation of radiotherapy, parallel results using single-dose radiation. The radiation dose to the cochlea is correlated to hearing loss measured as the speech reception threshold.

Rasmussen, Rune, E-mail: rune333@gmail.com [Department of Neurosurgery, Rigshospitalet, Copenhagen (Denmark)] [Department of Neurosurgery, Rigshospitalet, Copenhagen (Denmark); Claesson, Magnus [Department of Neurosurgery, Rigshospitalet, Copenhagen (Denmark)] [Department of Neurosurgery, Rigshospitalet, Copenhagen (Denmark); Stangerup, Sven-Eric [Ear, Nose, and Throat Department, Rigshospitalet, Copenhagen (Denmark)] [Ear, Nose, and Throat Department, Rigshospitalet, Copenhagen (Denmark); Roed, Henrik [Department of Radiation Oncology, Rigshospitalet, Copenhagen (Denmark)] [Department of Radiation Oncology, Rigshospitalet, Copenhagen (Denmark); Christensen, Ib Jarle [Finsen Laboratory, Rigshospitalet, Copenhagen (Denmark)] [Finsen Laboratory, Rigshospitalet, Copenhagen (Denmark); Caye-Thomasen, Per [Ear, Nose, and Throat Department, Rigshospitalet, Copenhagen (Denmark)] [Ear, Nose, and Throat Department, Rigshospitalet, Copenhagen (Denmark); Juhler, Marianne [Department of Neurosurgery, Rigshospitalet, Copenhagen (Denmark)] [Department of Neurosurgery, Rigshospitalet, Copenhagen (Denmark)

2012-08-01T23:59:59.000Z

231

Measurement of the B- -> D0 K*- branching fraction  

E-Print Network [OSTI]

From a sample of 232 million Upsilon(4S)--> B B-bar events collected with the BABAR detector at the PEP-II B Factory in 1999--2004, we measure the B- --> D0 K*-(892) decay branching fraction using events where the K*- is reconstructed in the K0_S pi- mode and the D0 in the K- pi+, K- pi+ pi0, and K- pi+ pi+ pi- channels: B(B- --> D0 K*-(892)) = 5.29 +/- 0.30(stat) +/- 0.34 (syst)) X 10-4.

B. Aubert

2006-04-08T23:59:59.000Z

232

The fractionation and characterization of two North American lignites  

E-Print Network [OSTI]

Assignments for the TMSI Reaction Page TI Product of the Gascoyne Bitumen LIST OF FIGURES FIGURE I, Extraction and Fractionation Scheme for the Page Gascoyne Lignite 24 2. X-Ray Diffractogram of the Low-Temperature Ash of the Demineralized Wilcox... the required data by inductively coupled argon plasma-atomic emissions spectrometry, which was essential in the completion of the thesis. Many thanks goes out to Ahmad Moini for performing the X-ray diffraction on the samples submitted. Finally, I wish...

Garcia Juan Manuel

1985-01-01T23:59:59.000Z

233

Priming after a Fractional Dose of Inactivated Poliovirus Vaccine  

Science Journals Connector (OSTI)

...each vaccination, the infants were monitored for 60 minutes for immediate adverse events and were also evaluated by qualified medical staff during home visits at 24 and 48 hours. Adverse events were classified as minor, moderate, or severe in intensity and as serious or not serious in consequence. No... Post-polio eradication planning is under way. In this randomized trial, a fractional dose (one fifth) of the inactivated polio vaccine given intradermally in 4-month-old infants in Cuba induced priming and seroconversion in more than 90% of infants.

Resik S.; Tejeda A.; Sutter R.W.

2013-01-31T23:59:59.000Z

234

Measurement of the inclusive semielectronic D(0) branching fraction  

E-Print Network [OSTI]

Farlane, P. M. Patel, and B. Spaan McGill University and the Institute of Particle Physics, Montre´al, Que´bec H3A 2T8, Canada A. J. Sadoff Ithaca College, Ithaca, New York 14850 R. Ammar, P. Baringer, A. Bean, D. Besson, D. Coppage, N. Copty, R. Davis, N...PHYSICAL REVIEW D 1 SEPTEMBER 1996VOLUME 54, NUMBER 5ARTICLES Measurement of the inclusive semielectronic D0 branching fraction Y. Kubota, M. Lattery, J. K. Nelson, S. Patton, R. Poling, T. Riehle, V. Savinov, and R. Wang University of Minnesota...

Baringer, Philip S.

1996-09-01T23:59:59.000Z

235

Vibration of the Duffing Oscillator: Effect of Fractional Damping  

E-Print Network [OSTI]

We have applied the Melnikov criterion to examine a global homoclinic bifurcation and transition to chaos in a case of the Duffing system with nonlinear fractional damping and external excitation. Using perturbation methods we have found a critical forcing amplitude above which the system may behave chaotically. The results have been verified by numerical simulations using standard nonlinear tools as Poincare maps and a Lyapunov exponent. Above the critical Melnikov amplitude $\\mu_c$, which is the sufficient condition of a global homoclinic bifurcation, we have observed the region with a transient chaotic motion.

Marek Borowiec; Grzegorz Litak; Arkadiusz Syta

2006-01-14T23:59:59.000Z

236

Molecular size characterization of heavy oil fractions in vacuum and solution by molecular dynamic simulation  

Science Journals Connector (OSTI)

Two kinds of heavy oils were fractionated into eight fractions by Liquid-Solid Adsorption Chromatography, respectively, and samples were collected to measure properties. According to the elemental analysis, mo...

Wenpo Ren; Honggang Chen; Chaohe Yang…

2010-09-01T23:59:59.000Z

237

Utilization of Ash Fractions from Alternative Biofuels used in Power Plants  

E-Print Network [OSTI]

Utilization of Ash Fractions from Alternative Biofuels used in Power Plants PSO Project No. 6356 July 2008 Renewable Energy and Transport #12;2 Utilization of Ash Fractions from Alternative Biofuels)...............................................................................7 2. Production of Ash Products from Mixed Biofuels

238

Edge tunneling and transport in non-abelian fractional quantum Hall systems  

E-Print Network [OSTI]

Several aspects of tunneling at the edge of a fractional quantum Hall (FQH) state are studied. Most examples are given for the non- abelian filling fraction ? = 5 2 Moore-Read Pfaffian state. For tunneling between opposite ...

Overbosch, Bas Jorn

2008-01-01T23:59:59.000Z

239

Analytic solution of nonlinear fractional Burgers-type equation by invariant subspace method  

E-Print Network [OSTI]

In this paper we study the analytic solutions of Burgers-type nonlinear fractional equations by means of the Invariant Subspace Method. We first study a class of nonlinear equations directly related to the time-fractional Burgers equation. Some generalizations linked to the forced time-fractional Burgers equations and variable-coefficient diffusion are also considered. Finally we study a Burgers-type equation involving both space and time-fractional derivatives.

P. Artale Harris; R. Garra

2013-06-08T23:59:59.000Z

240

MNRAS introduces ftp submission  

Science Journals Connector (OSTI)

......instructions will be available by e-mail from jr@ras.org.uk. Thanks are due to all...Chapman, University of Warwick. Dr C M R Fowler, University of London. Dr M J Penston...Barrow, Dr Hapgood, Prof. Howarth, Dr McNally, Dr Walker, Dr Ward-Thompson, Dr Smith......

John Randall

2001-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Introducing nuclear power  

Science Journals Connector (OSTI)

... about the second part of the book, most of which deals with the hazards of nuclear power. It seems to me that, in his anxiety to make a case which is ... not a metallic fuel.

Lord Hinton

1976-07-15T23:59:59.000Z

242

Introducing Our Authors  

Science Journals Connector (OSTI)

Nonscientific interests: Following the fortunes of Indian cricket, Formula 1, reading fictional and historical books, listening to music, and occasionally dancing ... My Master’s research involved using biopolymers to create interfaces between devices and biological matter. ... The interfacing biopolymers facilitate spatially selective attachment of biological matter such as proteins and DNA within the device and offers methods for the creation of biosensors. ...

2010-02-19T23:59:59.000Z

243

Observations of nitrogen isotope fractionation in deeply embedded protostars  

E-Print Network [OSTI]

(Abridged) The terrestrial planets, comets, and meteorites are significantly enriched in 15N compared to the Sun and Jupiter. While the solar and jovian nitrogen isotope ratio is believed to represent the composition of the protosolar nebula, a still unidentified process has caused 15N-enrichment in the solids. Several mechanisms have been proposed to explain the variations, including chemical fractionation. However, observational results that constrain the fractionation models are scarce. While there is evidence of 15N-enrichment in prestellar cores, it is unclear how the signature evolves into the protostellar phases. Our aim is to measure the 14N/15N ratio around three nearby, embedded low-to-intermediate-mass protostars. Isotopologues of HCN and HNC were used to probe the 14N/15N ratio. A selection of H13CN, HC15N, HN13C, and H15NC transitions was observed with the APEX telescope. The 14N/15N ratios were derived from the integrated intensities assuming a standard 12C/13C ratio. The assumption of optically...

Wampfler, S F; Bizzarro, M; Bisschop, S E

2014-01-01T23:59:59.000Z

244

Space-fractional advection-diffusion and reflective boundary condition  

Science Journals Connector (OSTI)

Anomalous diffusive transport arises in a large diversity of disordered media. Stochastic formulations in terms of continuous time random walks (CTRWs) with transition probability densities showing space- and/or time-diverging moments were developed to account for anomalous behaviors. A broad class of CTRWs was shown to correspond, on the macroscopic scale, to advection-diffusion equations involving derivatives of noninteger order. In particular, CTRWs with Lévy distribution of jumps and finite mean waiting time lead to a space-fractional equation that accounts for superdiffusion and involves a nonlocal integral-differential operator. Within this framework, we analyze the evolution of particles performing symmetric Lévy flights with respect to a fluid moving at uniform speed v. The particles are restricted to a semi-infinite domain limited by a reflective barrier. We show that the introduction of the boundary condition induces a modification in the kernel of the nonlocal operator. Thus, the macroscopic space-fractional advection-diffusion equation obtained is different from that in an infinite medium.

Natalia Krepysheva; Liliana Di Pietro; Marie-Christine Néel

2006-02-22T23:59:59.000Z

245

Studies on a brittle stem mutant of rice, Oryza sativa L. ; characterization of lignin fractions,  

E-Print Network [OSTI]

Studies on a brittle stem mutant of rice, Oryza sativa L. ; characterization of lignin fractions 78850 Thiverva!-Grignon SUMMARY Lignin fractions, associated p-coumaric and ferulic acids and polysaccharides have been characterized in the straw and in three lignin fractions isolated from the rice cultivar

Paris-Sud XI, Université de

246

HANFORD MEDIUM-LOW CURIE WASTE PRETREATMENT ALTERNATIVES PROJECT FRACTIONAL CRYSTALLIZATION PILOT SCALE TESTING FINAL REPORT  

SciTech Connect (OSTI)

The Fractional Crystallization Pilot Plant was designed and constructed to demonstrate that fractional crystallization is a viable way to separate the high-level and low-activity radioactive waste streams from retrieved Hanford single-shell tank saltcake. The focus of this report is to review the design, construction, and testing details of the fractional crystallization pilot plant not previously disseminated.

HERTING DL

2008-09-16T23:59:59.000Z

247

Aircraft Engineering and Aerospace Technology Emerald Article: Fractional controller design for suppressing smart beam  

E-Print Network [OSTI]

fractional orders of Continued Fraction Expansion (CFE) method. Findings ­ The first, second, third and fourth order approximations of CFE method were studied for the performance analysis of the controller of the performance of a developed fractional controller was realized by using different approach orders of the CFE

Yaman, Yavuz

248

Fractionation and Purification of the Polysaccharides with Marked Antitumor Activity, Especially Lentinan, from Lentinus edodes (Berk.) Sing. (an Edible Mushroom)  

Science Journals Connector (OSTI)

...preparations from water extracts of L...fractionation, purification, and antitumor...Fractionation and Purification of LC-1 Fraction...1.2 liters of water, and contaminants...Fractionation and Purification of Crude Fraction...dissolved in 6 liters of water and centrifuged...

Goro Chihara; Junji Hamuro; Yukiko Y. Maeda; Yoshiko Arai; and Fumiko Fukuoka

1970-11-01T23:59:59.000Z

249

PREPRINT QUASIPARTICLE AGGREGATION I N THE FRACTIONAL QUANTUM HALL EFFECT  

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

91618 91618 PREPRINT QUASIPARTICLE AGGREGATION I N THE FRACTIONAL QUANTUM HALL EFFECT R. B. Laughlin This paper was prepared for submittal to the Proceedings of the 17th International Conference on the Physics of Semi conductors San Francisco, California August 6-10, 1984 October 10, 1984 This is a preprint of a paper intended for publication in a journal or proceedings. Since changes may be made before publication, this preprint is made available with the un- derstanding that it will not be cited or reproduced without the permission of the author. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees,

250

CORRELATING INFALL WITH DEUTERIUM FRACTIONATION IN DENSE CORES  

SciTech Connect (OSTI)

We present a survey of HCO{sup +} (3-2) observations pointed toward dense cores with previous measurements of N(N{sub 2}D{sup +})/N(N{sub 2}H{sup +}). Of the 26 cores in this survey, 5 show the spectroscopic signature of outward motion, 9 exhibit neither inward nor outward motion, 11 appear to be infalling, and 1 is not detected. We compare the degree of deuterium fractionation with infall velocities calculated from the HCO{sup +} spectra and find that those cores with [D]/[H] > 0.1 are more likely to have the signature of inward motions than cores with smaller [D]/[H] ratios. Infall motions are also much more common in cores with masses exceeding their thermal Jeans masses. The fastest infall velocity measured belongs to one of the two protostellar cores in our survey, L1521F, and the observed motions are typically on the order of the sound speed.

Schnee, Scott; Brunetti, Nathan; Friesen, Rachel [National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States); Di Francesco, James; Johnstone, Doug; Pon, Andy [National Research Council Canada, Herzberg Institute of Astrophysics, 5071 West Saanich Road Victoria, BC V9E 2E7 (Canada); Caselli, Paola, E-mail: sschnee@nrao.edu [School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT (United Kingdom)

2013-11-10T23:59:59.000Z

251

Fractional calculus as a macroscopic manifestation of randomness  

Science Journals Connector (OSTI)

We generalize the method of Van Hove [Physica (Amsterdam) 21, 517 (1955)] so as to deal with the case of nonordinary statistical mechanics, that being phenomena with no time-scale separation. We show that in the case of ordinary statistical mechanics, even if the adoption of the Van Hove method imposes randomness upon Hamiltonian dynamics, the resulting statistical process is described using normal calculus techniques. On the other hand, in the case where there is no time-scale separation, this generalized version of Van Hove’s method not only imposes randomness upon the microscopic dynamics, but it also transmits randomness to the macroscopic level. As a result, the correct description of macroscopic dynamics has to be expressed in terms of the fractional calculus.

P. Grigolini; A. Rocco; B. J. West

1999-03-01T23:59:59.000Z

252

Fractional Doses of Inactivated Poliovirus Vaccine in Oman  

Science Journals Connector (OSTI)

...paracetamol, and instructions were given to parents to administer 50 mg every 8 hours for 3 days. Infants were evaluated for adverse events through home visits conducted at 24 hours after each vaccination by qualified medical staff members who were aware of the study-vaccination assignments. In addition... Determining an economically sustainable way to deliver the poliovirus vaccine remains a challenge and a priority. In this article, investigators in Oman show that with a one-fifth dose of the inactivated poliovirus vaccine given intradermally, the seroconversion rates at 7 months of age to all three poliovirus serotypes were equivalent to the rates with the standard full-dose vaccine given intramuscularly. However the median antibody titers were lower with the fractional dose than with the full dose.

Mohammed A.J.; AlAwaidy S.; Bawikar S.

2010-06-24T23:59:59.000Z

253

Fractional Order Modeling and Control: Development of Analog Strategies for Plasma Position Control of the Stor-1M Tokamak.  

E-Print Network [OSTI]

??This work revolves around the use of fractional order calculus in control science. Techniques such as fractional order universal adaptive stabilization (FO-UAS), and the fascinating… (more)

Mukhopadhyay, Shayok

2009-01-01T23:59:59.000Z

254

Proposed beryllium metal bounding airborne release fractions (ARFs)/rates (ARRs) and respirable fractions (RFs) for DOE facility accidents analyses  

Science Journals Connector (OSTI)

Beryllium metal has special properties for nuclear applications and is used widely within the Department of Energy (DOE) complex. Beryllium is toxic and has the potential to cause health effects (sensitization and chronic beryllium disease) to workers. Due to the type of processing involving large quantities of beryllium metal and powders and potential for significant airborne release under accident conditions, a comprehensive hazard analysis is required by DOE in a safety analysis document that evaluates potential accidents that can cause beryllium releases to the workplace and public or to the environment. The goal of the safety analysis is to identify and evaluate hazards so that appropriate controls or safeguards can be specified to protect the workers and public from potential accidents. A hazard assessment is also required to comply with 10 CFR Part 850, Chronic Beryllium Disease Prevention Program (1999) to protect the workers. DOE safety analyses include a quantitative estimate of releases and downwind concentrations for purposes of hazard classification and determination of the need for additional hazards analysis, accident analysis, and risk assessments. There are no complex-wide accepted Airborne Release Fractions (ARFs) and Respirable Fractions (RFs) that can be used to evaluate the potential downwind consequences of releases of beryllium under various accident conditions (e.g., spill, fire, stress, explosion, etc.). The purpose is to recommend DOE complex-wide \\{ARFs\\} and \\{RFs\\} that can be used to evaluate the potential downwind consequences of accidents. This paper proposes various values for \\{ARFs\\} and \\{RFs\\} that are based on review of the published information and data on the oxidation and ignition behavior of beryllium metal encased in a thin coat of non-porous, adherent oxide (“blue oxide”); the typical form of this material found in DOE facilities. Information is also presented as a function of the morphology of the metal (i.e., large, coherent, pieces; turnings/swarfs; chips/powder; and dust) because the surface to volume ratio is an important factor in evaluating both the amount of beryllium released and the potential for ignition of the metal that may increase the amount of release significantly. Guidance is also provided for the use of the DOE-HDBK-3010-94, Airborne Release Fractions/Rates and Respirable Fraction for Nonreactor Nuclear Facilities, values for oxide releases that result in a more liberal, allowable limiting airborne concentration for determining consequences and hazard classification of the facility. Detailed explanations of the proposed ARF/RF values for the various beryllium metal forms (large coherent pieces, chips/powder, turning/swarfs from processing, and dust) and other aspects of beryllium are provided in a report by Mishima et al. (April 2005). A short version of this report and a summary of the ARF/RF values are presented here.

Jofu Mishima; Terry L. Foppe; J.C. Laul

2008-01-01T23:59:59.000Z

255

Biomass Fractionation for the Biorefinery: Heteronuclear Multiple Quantum Coherence–Nuclear Magnetic Resonance Investigation of Lignin Isolated from Solvent Fractionation of Switchgrass  

Science Journals Connector (OSTI)

Biomass Fractionation for the Biorefinery: Heteronuclear Multiple Quantum Coherence–Nuclear Magnetic Resonance Investigation of Lignin Isolated from Solvent Fractionation of Switchgrass ... Center for Renewable Carbon, Center for Direct Catalytic Conversion of Biomass to Biofuels (C3Bio), University of Tennessee, 2506 Jacob Drive, Knoxville, Tennessee 37996, United States ... The results show that solvent fractionation conditions between about 120 °C and 0.1 M H2SO4 and 160 °C and 0.025 M H2SO4 are optimal for separating biomass in the biorefinery to give process streams most suitable for biobased fuel and chemical production. ...

Joseph J. Bozell; C. J. O'Lenick; Stacy Warwick

2011-07-27T23:59:59.000Z

256

Fractional design of experiments applied to a wear simulation  

Science Journals Connector (OSTI)

A multidisciplinary approach to wear simulation to investigate rolling-sliding abrasion is described. Wear is a stochastic process where fatigue combines with abrasion, adhesion and corrosion. Statistical methods were found to be highly suitable for conceiving and analysing laboratory simulation of the wear process. A special procedure of so-called two-level complex design of experiments is described. By the way of an example, a fractional experimental design is presented showing a procedure for simulataneous evaluation of the influence of force, temperature, material and sliding on abrasion of rolling mill tool materials. A set of laboratory treatments was conducted via two-disc testing and single-scratch testing. The results, including analyses of the wear track via profilometry and metallography are described. Wear phenomena are discussed from statistical, mechanistic and microstructural viewpoints. The heterogeneous polycrystalline materials exhibit inherently stochastic attributes. The additional factors causing the dispersion in the measured wear rate were the technical characteristics of the laboratory devices. However, by virtue of the statistical design of the experiments and subsequent analyses, these variations were monitored, and the main effects and interactions, characterising the abrasive wear, were satisfactorily diagnosed.

S. Spuzic; M. Zec; K. Abhary; R. Ghomashchi; I. Reid

1997-01-01T23:59:59.000Z

257

Massless Electron and Fractional Spin as Electronic Charge  

E-Print Network [OSTI]

The standard model (SM) of particle physics has been supported by several experimental findings, the most remarkable of them being the discovery of the weak gauge bosons, W and Z. It is expected that the Higgs boson could show up by 2007 at LHC, CERN. In spite of this, the unsatisfactory features of the SM at conceptual level, and exclusion of gravity from the unification scheme have led to explore 'the physics beyond the SM'. A critique and comprehensive review of the contemporary fundamental physics was presented in a monograph completed in the centenary year,1997 of the discovery of the electron. A radically new approach to address foundational problems was outlined: masslessness of bare electron, interpretation of the squared electronic charge in terms of the fractional spin, $e^2/c$; new physicalsignificance of the electromagnetic potentials, 2+1 dimensional internal structure of electron and neutrino, and composite photon are some of the ideas proposed. Though the monograph was reviewed by E. J. Post(Physics Essays, June1999), it has remained largely inaccessible. I believe some of these unconventional ideas have a potential to throw light on the fundamental questions in physics, and therefore deserve a wider dissemination. The reader may find illuminating to supplement Section 3 on the weak gauge bosons with a candid, graceful and personal recollection by Pierre Darriulat(CERN Courier, April 2004, p.13).

S. C. Tiwari

2004-06-28T23:59:59.000Z

258

DOE-HDBK-3010-94; DOE Handbook Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, Volume 1  

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

10-94 10-94 December 1994 CHANGE NOTICE NO. 1 March 2000 DOE HANDBOOK AIRBORNE RELEASE FRACTIONS/RATES AND RESPIRABLE FRACTIONS FOR NONREACTOR NUCLEAR FACILITIES Volume I - Analysis of Experimental Data U.S. Department of Energy AREA SAFT Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. Change Notice No. 1 DOE-HDBK-3010-94 March 2000 Airborne Release Fractions/Rates and Respirable Fractions

259

The use of carbonation and fractional evaporative crystallization in the pretreatment of Hanford nuclear wastes.  

E-Print Network [OSTI]

??The purpose of this work was to explore the use of fractional evaporative crystallization as a technology that can be used to separate medium-curie waste… (more)

Dumont, George Pierre, Jr.

2007-01-01T23:59:59.000Z

260

Exploring Fractional Order Calculus as an Artificial Neural Network Augmentation Samuel Alan Gardner  

E-Print Network [OSTI]

Exploring Fractional Order Calculus as an Artificial Neural Network Augmentation by Samuel Alan....................................................................................... 4 Artificial Neural Networks DESCRIPTION......................................................................... 22 Neural Network

Dyer, Bill

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Photomicrography for the measurement of steam wetness fraction in low pressure turbines.  

E-Print Network [OSTI]

??The measurement of steam wetness fraction at the exit of a low-pressure (LP) turbine stage is important if the highest turbine performance is to be… (more)

Veeder, Tricia Sue

2012-01-01T23:59:59.000Z

262

Carbon Ion Radiotherapy in Advanced Hypofractionated Regimens for Prostate Cancer: From 20 to 16 Fractions  

SciTech Connect (OSTI)

Purpose: To assess the effects of differences in dose fractionation on late radiation toxicity and biochemical control in patients with prostate cancer treated with carbon ion radiotherapy (C-ion RT). Methods and Materials: A total of 740 prostate cancer patients who received C-ion RT between April 2000 and February 2009 were analyzed. Of those, 664 patients followed for at least 1 year were analyzed with regard to late radiation toxicity. Biochemical relapse-free (BRF) and overall survival (OS) rates in patient subgroups with each dose-fractionation were analyzed. Results: Only 1 case of grade 3 genitourinary (GU) morbidity was observed in 20 fractions, and none of the patients developed higher grade morbidities. The incidence of late GU toxicity in patients treated with 16 fractions was lower than that of patients treated with 20 fractions. The OS rate and BRF rate of the entire group at 5 years were 95.2% and 89.7%, respectively. The 5-year BRF rate of the patients treated with 16 fractions of C-ion RT (88.5%) was comparable to that of the patients treated with 20 fractions (90.2%). Conclusion: C-ion RT of 57.6 GyE (the physical C-ion dose [Gy] Multiplication-Sign RBE) in 16 fractions could offer an even lower incidence of genitourinary toxicity and comparable BRF rate than that in 20 fractions. Advancement in hypofractionation could be safely achieved with C-ion RT for prostate cancer.

Okada, Tohru [National Institute of Radiological Sciences, Chiba (Japan)] [National Institute of Radiological Sciences, Chiba (Japan); Tsuji, Hiroshi, E-mail: h_tsuji@nirs.go.jp [National Institute of Radiological Sciences, Chiba (Japan)] [National Institute of Radiological Sciences, Chiba (Japan); Kamada, Tadashi [National Institute of Radiological Sciences, Chiba (Japan)] [National Institute of Radiological Sciences, Chiba (Japan); Akakura, Koichiro; Suzuki, Hiroyoshi; Shimazaki, Jun [Department of Urology, Graduate School of Medicine, Chiba University, Chiba (Japan)] [Department of Urology, Graduate School of Medicine, Chiba University, Chiba (Japan); Tsujii, Hirohiko [National Institute of Radiological Sciences, Chiba (Japan)] [National Institute of Radiological Sciences, Chiba (Japan)

2012-11-15T23:59:59.000Z

263

Magnesium isotopic fractionation in chondrules from the Murchison and Murray CM2 carbonaceous chondrites  

E-Print Network [OSTI]

Magnesium isotopic fractionation in chondrules from the Murchison and Murray CM2 carbonaceous. Investigation of the magnesium isotopic compositions of chondrules can place stringent constraints on the timing

Grossman, Lawrence

264

Carbon isotope ratios of organic compound fractions in oceanic suspended particles  

E-Print Network [OSTI]

Radiocarbon evidence of fossil-carbon cycling in sediments1968), Metabolic fractionation of carbon isotopes in marineof particulate organic carbon using bomb 14 C, Nature,

Hwang, Jeomshik; Druffel, Ellen R. M

2006-01-01T23:59:59.000Z

265

Oxygen isotope fractionation in the vacuum ultraviolet photodissociation of carbon monoxide: Wavelength, pressure and temperature dependency.  

E-Print Network [OSTI]

Oxygen isotope fractionation in the vacuum ultravioletmeasurement of the associated oxygen isotopic composition ofwavelength dependency of the oxygen isotopic composition in

Chakraborty, Subrata

2013-01-01T23:59:59.000Z

266

Chlorine Decay and Disinfection By-product Formation of Dissolved Organic Carbon Fractions with Goethite.  

E-Print Network [OSTI]

??Water from the raw water intake at Barberton, Ohio water treatment plant was collected on two separate dates and fractionated into operationally defined dissolved organic… (more)

Wannamaker, Christopher L.

2008-01-01T23:59:59.000Z

267

Introducing constricted variational density functional theory in its relaxed self-consistent formulation (RSCF-CV-DFT) as an alternative to adiabatic time dependent density functional theory for studies of charge transfer transitions  

SciTech Connect (OSTI)

We have applied the relaxed and self-consistent extension of constricted variational density functional theory (RSCF-CV-DFT) for the calculation of the lowest charge transfer transitions in the molecular complex X-TCNE between X = benzene and TCNE = tetracyanoethylene. Use was made of functionals with a fixed fraction (?) of Hartree-Fock exchange ranging from ? = 0 to ? = 0.5 as well as functionals with a long range correction (LC) that introduces Hartree-Fock exchange for longer inter-electronic distances. A detailed comparison and analysis is given for each functional between the performance of RSCF-CV-DFT and adiabatic time-dependent density functional theory (TDDFT) within the Tamm-Dancoff approximation. It is shown that in this particular case, all functionals afford the same reasonable agreement with experiment for RSCF-CV-DFT whereas only the LC-functionals afford a fair agreement with experiment using TDDFT. We have in addition calculated the CT transition energy for X-TCNE with X = toluene, o-xylene, and naphthalene employing the same functionals as for X = benzene. It is shown that the calculated charge transfer excitation energies are in as good agreement with experiment as those obtained from highly optimized LC-functionals using adiabatic TDDFT. We finally discuss the relation between the optimization of length separation parameters and orbital relaxation in the RSCF-CV-DFT scheme.

Krykunov, Mykhaylo; Seth, Mike; Ziegler, Tom [Department of Chemistry, University of Calgary, University Drive 2500, Calgary, Alberta T2N 1N4 (Canada)] [Department of Chemistry, University of Calgary, University Drive 2500, Calgary, Alberta T2N 1N4 (Canada)

2014-05-14T23:59:59.000Z

268

WELL-POSEDNESS AND INVISCID LIMITS OF THE BOUSSINESQ EQUATIONS WITH FRACTIONAL LAPLACIAN DISSIPATION  

E-Print Network [OSTI]

WELL-POSEDNESS AND INVISCID LIMITS OF THE BOUSSINESQ EQUATIONS WITH FRACTIONAL LAPLACIAN-posedness and inviscid limits of several systems of Boussinesq equations with fractional dissipation. Three main results 2D Boussinesq equations. This is achieved by examining their inviscid limits. The second result

Wu, Jiahong

269

Application of a fractional advection-dispersion equation David A. Benson  

E-Print Network [OSTI]

long-term correlation and fractional derivatives in time [Giona and Roman, 1992; Compte, 1996] and ensue. During this pre-Fickian phase of transport, scale-dependent dispersion coefficients can be used-consuming process that is commonly used to gain information about a plume's pre-Fickian behavior. The fractional ADE

270

Limited lithium isotopic fractionation during progressive metamorphic dehydration in metapelites: A case study  

E-Print Network [OSTI]

Limited lithium isotopic fractionation during progressive metamorphic dehydration in metapelites-zone metamorphism far removed from the pluton to partially melted rocks adjacent to the pluton. Lithium on the aureole scale. Published by Elsevier B.V. Keywords: Lithium; Isotope fractionation; Metamorphic

Mcdonough, William F.

271

Assessment of size-fractionated species of curium-244 via alpha spectrometry in groundwater  

E-Print Network [OSTI]

Assessment of size-fractionated species of curium-244 via alpha spectrometry in groundwater S. M Abstract Curium was produced for experimental pro- grams for use as a heat source for isotopic electrical differences in 244 Cm concentration. Keywords Curium Á Groundwater Á Size-fractionation Introduction Curium

Buesseler, Ken

272

Machine milkability as related to dairy yield and its fractions in dairy ewes (1)  

E-Print Network [OSTI]

Machine milkability as related to dairy yield and its fractions in dairy ewes (1) O. JATSCH R. SAGI and adaptation to machine milking were evaluated by determining milk yield fractions for Awassi and Assaf dairy conformation significantly affected milk yield and adaptation to machine milking, while breed, rearing methods

Paris-Sud XI, Université de

273

Self-similar solutions for a fractional thin film equation governing hydraulic fractures  

E-Print Network [OSTI]

Self-similar solutions for a fractional thin film equation governing hydraulic fractures C. Imbert equation governing hydraulic fractures are constructed. One of the boundary con- ditions, which accounts, 35R11, 35C06 Keywords: Hydraulic fractures, higher order equation, thin films, fractional Laplacian

Boyer, Edmond

274

Quantifying kinetic fractionation in Bunker Cave speleothems using D47 Tobias Kluge*, Hagit P. Affek  

E-Print Network [OSTI]

Quantifying kinetic fractionation in Bunker Cave speleothems using D47 Tobias Kluge*, Hagit P. Holocene and modern speleothems from Bunker Cave (Germany) as well as modern material from the adjacent in the kinetic isotope fractionation in Bunker Cave are associated with changing drip water super saturation

275

A Population-Based Study of the Fractionation of Postlumpectomy Breast Radiation Therapy  

SciTech Connect (OSTI)

Purpose: The optimal fractionation schedule of post lumpectomy radiation therapy remains controversial. The objective of this study was to describe the fractionation of post-lumpectomy radiation therapy (RT) in Ontario, before and after the seminal Ontario Clinical Oncology Group (OCOG) trial, which showed the equivalence of 16- and 25-fraction schedules. Methods and Materials: This was a retrospective cohort study conducted by linking electronic treatment records to a population-based cancer registry. The study population included all patients who underwent lumpectomy for invasive breast cancer in Ontario, Canada, between 1984 and 2008. Results: Over the study period, 41,747 breast cancer patients received post lumpectomy radiation therapy to the breast only. Both 16- and 25-fraction schedules were commonly used throughout the study period. In the early 1980s, shorter fractionation schedules were used in >80% of cases. Between 1985 and 1995, the proportion of patients treated with shorter fractionation decreased to 48%. After completion of the OCOG trial, shorter fractionation schemes were once again widely adopted across Ontario, and are currently used in about 71% of cases; however, large intercenter variations in fractionation persisted. Conclusions: The use of shorter schedules of post lumpectomy RT in Ontario increased after completion of the OCOG trial, but the trial had a less normative effect on practice than expected.

Ashworth, Allison [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada) [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada); Cancer Center of Southeastern Ontario, Kingston, Ontario (Canada); Kong, Weidong [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada)] [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada); Whelan, Timothy [Juravinski Cancer Center, Hamilton, Ontario (Canada)] [Juravinski Cancer Center, Hamilton, Ontario (Canada); Mackillop, William J., E-mail: william.mackillop@krcc.on.ca [Division of Cancer Care and Epidemiology, Queen's University Cancer Research Institute, Kingston, Ontario (Canada)

2013-05-01T23:59:59.000Z

276

SURFACE CLOUD RADIATIVE FORCING, CLOUD FRACTION AND CLOUD ALBEDO: THEIR RELATIONSHIP AND MULTISCALE VARIATION  

E-Print Network [OSTI]

SURFACE CLOUD RADIATIVE FORCING, CLOUD FRACTION AND CLOUD ALBEDO: THEIR RELATIONSHIP AND MULTISCALE/Atmospheric Sciences Division Brookhaven National Laboratory P.O. Box, Upton, NY www.bnl.gov ABSTRACT Cloud-induced climate change. Cloud-radiative forcing, cloud fraction, and cloud albedo are three key quantities

277

Probabilistic Simulation of Multi-Stage Decisions for Operation of a Fractionated Satellite Mission  

E-Print Network [OSTI]

decisions. We use a generic Department of Defense (DoD) terrestrial weather satellite program as a caseProbabilistic Simulation of Multi-Stage Decisions for Operation of a Fractionated Satellite Mission of net present value for a fractionated satellite constellation. The goal is to begin development

Alonso, Juan J.

278

The impact of vegetation on fractionation of rare earth elements (REE) during waterrock interaction  

E-Print Network [OSTI]

The impact of vegetation on fractionation of rare earth elements (REE) during water The fractionation of the rare earth elements (REE) in river water, as well as the immobilization of REE in the river earth elements (REE) principally originate from apatite dissolution during weathering. However, stream

Mailhes, Corinne

279

Hydrogen isotope fractionation in freshwater algae: I. Variations among lipids and species  

E-Print Network [OSTI]

Hydrogen isotope fractionation in freshwater algae: I. Variations among lipids and species Zhaohui in media containing different concentrations of deuterium. The hydrogen isotopic ratios of lipids that lipid dD values can be used to determine water dD values, hydrogen isotope fractionation was found

Sachs, Julian P.

280

Sorption of Aldrich Humic Acids onto Hematite: Insights into Fractionation Phenomena by Electrospray  

E-Print Network [OSTI]

Sorption of Aldrich Humic Acids onto Hematite: Insights into Fractionation Phenomena.reiller@cea.fr, +33 1 6908 4312 ;badia.amekraz@cea.fr, +33 1 6908 8034; Fax +33 1 6908 5411 Abstract. Sorption induced-mass range provided evidence of further fractionation induced by sorption within the LMWF. Among the two

Paris-Sud XI, Université de

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While these samples are representative of the content of NLEBeta,
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281

Performance analysis of a fractional controller developed for the vibration suppression of a smart beam  

E-Print Network [OSTI]

via Continued Fraction Expansion (CFE) method, was designed and implemented for the suppression of the flexural vibrations of a smart beam. The first, second, third and fourth order approximations of the CFE is the CFE method (Krishna 2008). In this study a fractional order controller developed by using the CFE

Yaman, Yavuz

282

Brazil is to introduce subsidised hormonal contraceptives and increase the number of contraceptives available at no cost from primary healthcare clinics,  

Science Journals Connector (OSTI)

Brazil is to introduce subsidised hormonal contraceptives and...Scrip. The contraceptives that are to be subsidised include injections containing estradiol valerate/norethisterone enantate injections and oral the...

2007-06-01T23:59:59.000Z

283

Decision-theoretic Rough Sets and Beyond Zdzislaw Pawlak introduced rough sets 30 years ago as a theory for data analysis and  

E-Print Network [OSTI]

Decision-theoretic Rough Sets and Beyond Zdzislaw Pawlak introduced rough sets 30 years ago as a theory for data analysis and classification. Rough. Fundamental notions of rough sets are knowledge granulation induced by grouping objects

Yao, JingTao

284

Calculation of spontaneous emission from a V-type three-level atom in photonic crystals using fractional calculus  

Science Journals Connector (OSTI)

Fractional time derivative, an abstract mathematical operator of fractional calculus, is used to describe the real optical system of a V-type three-level atom embedded in a photonic crystal. A fractional kinetic equation governing the dynamics of the spontaneous emission from this optical system is obtained as a fractional Langevin equation. Solving this fractional kinetic equation by fractional calculus leads to the analytical solutions expressed in terms of fractional exponential functions. The accuracy of the obtained solutions is verified through reducing the system into the special cases whose results are consistent with the experimental observation. With accurate physical results and avoiding the complex integration for solving this optical system, we propose fractional calculus with fractional time derivative as a better mathematical method to study spontaneous emission dynamics from the optical system with non-Markovian dynamics.

Chih-Hsien Huang; Jing-Nuo Wu; Yen-Yin Li; Szu-Cheng Cheng; Wen-Feng Hsieh

2011-07-05T23:59:59.000Z

285

The effect of gravel size fraction on the distribution coefficients of selected radionuclides  

SciTech Connect (OSTI)

This manuscript addresses the consequences of the common practice of assuming that the gravel fraction of sediments does not participate in sorption reactions and thus sorption quantified by the distribution coefficient (Kd) construct can be estimated from laboratory tests on sediments less than 2 mm size fraction. However, this common assumption can lead to inaccurate estimates of the mobility and sorption affinity of many radionuclides (e.g., Tc, U, and Np) on gravel dominated sediments at the Hanford Site and other locations. Laboratory batch sorption experiments showed that the distribution coefficients measured using only sediment less than 2 mm size fraction and correcting for inert gravel fraction were not in agreement with those obtained from the bulk sediments including gravel (larger than 2 mm size fraction), depending on the radionuclide. The least reactive radionuclide, Tc had Kd values for bulk sediment with negligible deviations from the inert gravel corrected Kd values measured on less than 2 mm size fraction. However, differences between measured Kd values using sediment less than 2 mm size fraction and the Kd values on the bulk sediment were significant for intermediately and strongly reactive radionuclides such as U and Np, especially on the sediment with gravel fractions that contained highly reactive sites. Highly reactive sites in the gravel fraction were attributed to the presence of Fe oxide coatings and/or reactive fracture faces on the gravel surfaces. Gravel correction factors that use the sum of the Kd,<2 mm and Kd,>2 mm values to estimate the Kd for the bulk sediment were found to best describe Kd values for radionuclides on the bulk sediment. Gravel correction factors should not be neglected to predict precisely the sorption capacity of the bulk sediments that contain more than 30% gravel. In addition, more detailed characterization of gravel surfaces should be conducted to identify whether higher reactive sorbents are present in the gravels.

Um, Wooyong; Serne, R. Jeffrey; Last, George V.; Clayton, Ray E.; Glossbrenner, Ellwood T.

2009-06-26T23:59:59.000Z

286

Theoretical principles of use of coal fractions with different densities for combustion  

SciTech Connect (OSTI)

It is reasonable to complement the conventional preparation of steam coal involving the removal of ash components and pyritic sulfur by the isolation of the lightest organic fractions, which possess enhanced performance characteristics. These fractions are smoothly saleable both on the domestic and world markets for effective pulverized-coal combustion via new combustion technologies. Heavier (inertinite) fractions of the coal preparation concentrate marketed at lower prices can be considered appropriate fuel for burning in circulating fluidized-bed combustion systems. 13 refs., 5 figs., 4 tabs.

S.G. Gagarin; A.M. Gyul'maliev [Institute for Fossil Fuels, Moscow (Russian Federation)

2009-02-15T23:59:59.000Z

287

Fractional Euler-Bernoulli beams: theory, numerical study and experimental validation  

E-Print Network [OSTI]

In this paper the classical Euler-Bernoulli beam (CEBB) theory is reformulated utilising fractional calculus. Such generalisation is called fractional Euler-Bernoulli beams (FEBB) and results in non-local spatial description. The parameters of the model are identified based on AFM experiments concerning bending rigidities of micro-beams made of the polymer SU-8. In experiments both force as well as deflection data were recorded revealing significant size effect with respect to outer dimensions of the specimens. Special attention is also focused on the proper numerical solution of obtained fractional differential equation.

Wojciech Sumelka; Tomasz Blaszczyk; Christian Liebold

2015-02-05T23:59:59.000Z

288

CLAY?NANOCOMPOSITES POLYURETHANE ADHESIVES : ANALYSIS OF THE RIGID AMORPHOUS FRACTION  

Science Journals Connector (OSTI)

In this work nanocomposite adhesives for flexible packaging obtained using an organically modified montmorillonite (OMM) in a polyurethane matrix were synthesized and characterized. The microstructure of the composites was investigated by X?ray diffraction. The glass transition temperature of PU nanocomposites measured using differential scanning calorimeter increases with increasing volume fraction of OMM. On the other hand the specifc heat increment ? C P normalized to the weight of the organic fraction decreases as nanoclay was added. Therefore a corresponding increase of the rigid amorphous fraction of PU nanocomposites with nanoclay was observed.

C. Esposito Corcione; A. Greco; A. Maffezzoli

2008-01-01T23:59:59.000Z

289

Boron-isotope fractionation between tourmaline and fluid: an experimental re-investigation  

Science Journals Connector (OSTI)

The fractionation of boron isotopes between synthetic dravitic tourmaline and fluid was determined by hydrothermal experiments between 400 and 700°C at 200 MPa and at 500°C, 500 MPa. Tourmaline was crystallize...

Christian Meyer; Bernd Wunder; Anette Meixner…

2008-08-01T23:59:59.000Z

290

Contribution of isotopologue self-shielding to sulfur mass-independent fractionation during sulfur dioxide photolysis  

E-Print Network [OSTI]

Signatures of sulfur mass-independent fractionation (S-MIF) are observed for sulfur minerals in Archean rocks, and for modern stratospheric sulfate aerosols (SSA) deposited in polar ice. Ultraviolet light photolysis of ...

Lyons, J. R.

291

Theoretical principles of use of coal fractions with different densities for combustion  

Science Journals Connector (OSTI)

It is reasonable to complement the conventional preparation of steam coal involving the removal of ash components and pyritic sulfur by the isolation of the lightest organic fractions, which possess enhanced p...

S. G. Gagarin; A. M. Gyul’maliev

2009-02-01T23:59:59.000Z

292

A study of heavy oil fractions by Fourier-transform near-infrared Raman spectroscopy  

Science Journals Connector (OSTI)

Oil fractions with a boiling-point step size of 20°C (300 to 560°C) for six different crude oils of Western Siberia have been studied by Fourier-transform Raman and Fourier-transform IR spectroscopy. Weak band...

A. Kh. Kuptsov; T. V. Arbuzova

2011-05-01T23:59:59.000Z

293

Practical delay modeling of externally recirculated burned gas fraction for Spark-Ignited Engines  

E-Print Network [OSTI]

. INTRODUCTION AND COMPARISON WITH DIESEL EXHAUST GAS RECIRCULATION To prevent the malicious knock phenomenon. Scheme of the intake burned gas fraction dynamics. In the seemingly similar context of automotive Diesel

294

PROCESS DEVELOPMENT FOR THE FRACTIONATION AND ISOLATION OF CORN FIBER HEMICELLULOSE.  

E-Print Network [OSTI]

??Corn fiber is a co-product of the corn wet-milling process that holds potential to become a value-added product. A process was developed to fractionate and… (more)

Montanti, Justin

2010-01-01T23:59:59.000Z

295

Production cross section and topological decay branching fractions of the ? lepton  

E-Print Network [OSTI]

We report new measurements of the production cross section for the reaction e(+)e(?)??(+)?(?) at s?=29 GeV, as well as the topological decay branching fractions of the ? lepton. The data were taken with the High Resolution ...

Baringer, Philip S.

1989-08-01T23:59:59.000Z

296

New Results in Stability, Control, and Estimation of Fractional Order Systems  

E-Print Network [OSTI]

of control and estimation, even for systems where fractional order models do not arise “naturally”. This dissertation is aimed at further building of the base methodology with a focus on robust feedback control and state estimation. By setting...

Koh, Bong Su

2012-07-16T23:59:59.000Z

297

Statistical comparison of two-phase flow, void fraction fluctuations in a microgravity environment  

E-Print Network [OSTI]

identifier. Results show that slug flows exhibit both unimodal distribution and multi-modal distribution in the probability density function while annular flows have unimodal distribution with a peak at high void fractions. It was found that the variance...

Chang, Jae Ho

1997-01-01T23:59:59.000Z

298

Branching fractions and charge asymmetries in charmless hadronic decays at BABAR  

SciTech Connect (OSTI)

We present measurements of branching fraction, polarization and charge asymmetry in charmless hadronic B decays with {eta}, {eta}{prime}, {omega}, and b{sub 1} in the final state. All the results use the final BABAR dataset.

Biassoni, Pietro; /Milan U. /INFN, Milan

2009-10-30T23:59:59.000Z

299

Isolation of tube precipitin antibody-reactive fractions of Coccidioides immitis.  

Science Journals Connector (OSTI)

...humoral response has been detected by tube precipitin (TP) and immunodiffusion (ID)-TP assays of patient sera, which are valuable aids...antigenic fractions which show reactivity with patient TP antibody have been published. However, confusion...

D Kruse; G T Cole

1990-01-01T23:59:59.000Z

300

E-Print Network 3.0 - absorbed fraction internal irradiation...  

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

. It gives a simple expression relating the sol fraction Fp to the irradiation dose. As shown in hal-00539984... (cf. table 2). Irradiation at 80C Swelling ratio and...

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Uncertainties analysis of fission fraction for reactor antineutrino experiments using DRAGON  

E-Print Network [OSTI]

Rising interest in nuclear reactors as a source of antineutrinos for experiments motivates validated, fast, and accessible simulation to predict reactor rates. First, DRAGON was developed to calculate the fission rates of the four most important isotopes in fissions,235U,238U,239Pu and141Pu, and it was validated for PWRs using the Takahama benchmark. The fission fraction calculation function was validated through comparing our calculation results with MIT's results. we calculate the fission fraction of the Daya Bay reactor core, and compare its with those calculated by the commercial reactor simulation program SCIENCE, which is used by the Daya Bay nuclear power plant, and the results was consist with each other. The uncertainty of the antineutrino flux by the fission fraction was studied, and the uncertainty of the antineutrino flux by the fission fraction simulation is 0.6% per core for Daya Bay antineutrino experiment.

X. B. Ma; L. Z. Wang; Y. X. Chen; W. L. Zhong; F. P. An

2014-05-27T23:59:59.000Z

302

Effect of nanofiber proximity on the mechanical behavior of high volume fraction aligned carbon nanotube arrays  

E-Print Network [OSTI]

The effect of nanofiber proximity on the mechanical behavior of nanofiber arrays with volume fractions (V f) from 1% to 20% was quantified via nanoindentation of an aligned carbon nanotube (A-CNT) array. The experimental ...

Cebeci, Hülya

303

E-Print Network 3.0 - aquatic organic fractions Sample Search...  

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

results for: aquatic organic fractions Page: << < 1 2 3 4 5 > >> 1 Journal of Animal Ecology 2009, 78, 338345 doi: 10.1111j.1365-2656.2008.01498.x 2008 The Authors. Journal...

304

Size Analysis of Automobile Soot Particles Using Field-Flow Fractionation  

Science Journals Connector (OSTI)

Size Analysis of Automobile Soot Particles Using Field-Flow Fractionation ... The off-line method includes a cascade impactor (23) and an electric low-pressure impactor (19). ...

Won-suk Kim; Sun Hui Kim; Dai Woon Lee; Seungho Lee; Cheol Soo Lim; Jung Ho Ryu

2001-02-07T23:59:59.000Z

305

E-Print Network 3.0 - average void fraction Sample Search Results  

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

Title and author(s) Summary: above this temperature can lead to a large fraction of vacancies being trans- ferred from loops to voids... swelling values,are shown in the table....

306

Improving catalysts for the refining of straight-run gasoline fractions of petroleum  

Science Journals Connector (OSTI)

We propose a method for modifying catalysts based on a high-silica zeolite of the ZSM-5 type using Ni nanopowder to improve catalysts for the refining of straight-run gasoline fractions. The proposed method, whic...

E. V. Urzhumova; L. M. Velichkina; A. V. Vosmerikov; A. E. Ermakov

2011-06-01T23:59:59.000Z

307

Apparatus and method for rapid separation and detection of hydrocarbon fractions in a fluid stream  

DOE Patents [OSTI]

An apparatus and method for rapid fractionation of hydrocarbon phases in a sample fluid stream are disclosed. Examples of the disclosed apparatus and method include an assembly of elements in fluid communication with one another including one or more valves and at least one sorbent chamber for removing certain classifications of hydrocarbons and detecting the remaining fractions using a detector. The respective ratios of hydrocarbons are determined by comparison with a non separated fluid stream.

Sluder, Charles S.; Storey, John M.; Lewis, Sr., Samuel A.

2013-01-22T23:59:59.000Z

308

Fractionation of stable carbon isotopes by phosphoenopyruvate carboxylase from C4 plants  

E-Print Network [OSTI]

FRACTIONATION OP STABLE CARBON ISOTOPES BY PHOSPHOENOLPYRUYATE CARBOXYLASE FROM C& PLANTS A Thesis by PAUL HOWARD REIBACH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE August 1976 Major Sub)cot: Piant Physiology FRACTIONATION OF STABLE CARBON ISOTOPES BY PHOSPHOENOLPYRUVATE CARBOXYLASE FROM CA PLANTS A Thesis by PAUL HOHARD REIBACH Approved as to style and content by: airman of Committee) ead...

Reibach, Paul Howard

2012-06-07T23:59:59.000Z

309

Development of magnetic separation methods of analysis: magnetic field flow fractionation  

E-Print Network [OSTI]

of MASTER OF SCIENCE August 1980 Major Subject: Chemistry DEVELOPMENT OF MAGNETIC SEPARATION METHODS OF ANALYSIS: MAGNETIC FIELD FLOW FRACTIONATION A Thesis by JAIME GARCIA-RAMIREZ Approved as to style and content by: (Chairman of Committee) 1... of MASTER OF SCIENCE August 1980 Major Subject: Chemistry DEVELOPMENT OF MAGNETIC SEPARATION METHODS OF ANALYSIS: MAGNETIC FIELD FLOW FRACTIONATION A Thesis by JAIME GARCIA-RAMIREZ Approved as to style and content by: (Chairman of Committee) 1...

Garcia-Ramirez, Jaime

2012-06-07T23:59:59.000Z

310

Fraction of stopped K- mesons which interact with free hydrogen in propane  

Science Journals Connector (OSTI)

In a sample of film containing 13 400 stopped K- mesons in a liquid-propane bubble chamber, 98 examples of the reaction K-p??- ?+ were found. Using the known branching ratio for this channel, we find the fraction of K- which interact at rest with free protons to be (3.2 ± 0.4)%. The result is compared with measurements of the same fraction for ?- mesons and anti-protons.

C. T. Murphy; G. Keyes; M. Saha; M. Tanaka

1974-03-01T23:59:59.000Z

311

ARM: Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.

Gaustad, Krista; Gaustad, Krista; McFarlane, Sally; McFarlane, Sally

312

Non-Standard Extensions of Gradient Elasticity: Fractional Non-Locality, Memory and Fractality  

E-Print Network [OSTI]

Derivatives and integrals of non-integer order may have a wide application in describing complex properties of materials including long-term memory, non-locality of power-law type and fractality. In this paper we consider extensions of elasticity theory that allow us to describe elasticity of materials with fractional non-locality, memory and fractality. The basis of our consideration is an extension of the usual variational principle for fractional non-locality and fractality. For materials with power-law non-locality described by Riesz derivatives of non-integer order, we suggest a fractional variational equation. Equations for fractal materials are derived by a generalization of the variational principle for fractal media. We demonstrate the suggested approaches to derive corresponding generalizations of the Euler-Bernoulli beam and the Timoshenko beam equations for the considered fractional non-local and fractal models. Various equations for materials with fractional non-locality, fractality and fractional acceleration are considered.

Vasily E. Tarasov; Elias C. Aifantis

2014-04-21T23:59:59.000Z

313

Resole resin products derived from fractionated organic and aqueous condensates made by fast-pyrolysis of biomass materials  

DOE Patents [OSTI]

A process for preparing phenol-formaldehyde resole resins by fractionating organic and aqueous condensates made by fast-pyrolysis of biomass materials while using a carrier gas to move feed into a reactor to produce phenolic-containing/neutrals in which portions of the phenol normally contained in said resins are replaced by a phenolic/neutral fractions extract obtained by fractionation.

Chum, Helena L. (8448 Allison Ct., Arvada, CO 80005); Black, Stuart K. (4976 Raleigh St., Denver, CO 80212); Diebold, James P. (57 N. Yank Way, Lakewood, CO 80228); Kreibich, Roland E. (4201 S. 344th, Auburn, WA 98001)

1993-01-01T23:59:59.000Z

314

Resole resin products derived from fractionated organic and aqueous condensates made by fast-pyrolysis of biomass materials  

DOE Patents [OSTI]

A process for preparing phenol-formaldehyde resole resins by fractionating organic and aqueous condensates made by fast-pyrolysis of biomass materials while using a carrier gas to move feed into a reactor to produce phenolic-containing/neutrals in which portions of the phenol normally contained in said resins are replaced by a phenolic/neutral fractions extract obtained by fractionation.

Chum, H.L.; Black, S.K.; Diebold, J.P.; Kreibich, R.E.

1993-08-10T23:59:59.000Z

315

The roadmap for downscaling and introducing new technologies in the semiconductor industry is well laid out for the next ten years2.  

E-Print Network [OSTI]

The roadmap for downscaling and introducing new technologies in the semiconductor industry is well in the International Technology Roadmap for Semiconductors, one- dimensional structures, such as carbon nanotubes an impact on future post-complementary metal- oxide-semiconductor (CMOS) technology depends on more factors

316

Efficient Heat Engines and Heat Pumps (10 credits) The aim of the module is to introduce the various ideal thermodynamic cycles that form  

E-Print Network [OSTI]

Efficient Heat Engines and Heat Pumps (10 credits) The aim of the module is to introduce the various ideal thermodynamic cycles that form the basis for power generation, heat pumping and IC Engines performance. Syllabus Heat Engines and Heat Pumps · Second Law of Thermodynamics, Concept

Miall, Chris

317

Goh et al. Reply: We introduced in a recent Letter [1] the load distribution following a power law on scale-free (SF)  

E-Print Network [OSTI]

Goh et al. Reply: We introduced in a recent Letter [1] the load distribution following a power law on scale-free (SF) networks. In addition, it was conjectured that the load exponent is universal as long. In this Reply, we notice that the discrepancy is mainly caused by different usages of definition of load in [1

Kim, Doochul

318

Goh et al. Reply: We introduced in a recent Letter [1] the load distribution following a power law on scalefree (SF) net  

E-Print Network [OSTI]

Goh et al. Reply: We introduced in a recent Letter [1] the load distribution following a power law on scale­free (SF) net­ works. In addition, it was conjectured that the load exponent d is universal. In this reply, we notice that the discrepancy is mainly caused by different usages of definition of load in [1

Kahng, Byungnam

319

Figure 1. The dataset for the running example is excerpted at left, arranged in the typical manner for MVPA. The boxes at right introduce the dataset  

E-Print Network [OSTI]

Figure 1. The dataset for the running example is excerpted at left, arranged in the typical manner for MVPA. The boxes at right introduce the dataset representation used in later figures. In these boxes the "dataset-wise" scheme, the examples are relabeled prior to conducting the cross- validation, while

320

Republic of South Africa Constitution Act 110 of 1983 To introduce a new constitution for the Republic of South Africa and to provide for matters  

E-Print Network [OSTI]

Republic of South Africa Constitution Act 110 of 1983 ACT To introduce a new constitution for the Republic of South Africa and to provide for matters incidental thereto. (English text signed by the State; and ARE DESIROUS OF GIVING THE REPUBLIC OF SOUTH AFRICA A CONSTITUTION which provides for elected and responsible

Sheridan, Jennifer

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

CS 551: Operating Systems Design and Implementation This course introduces the students to the fundamental principles of operating systems design, and gives them  

E-Print Network [OSTI]

CS 551: Operating Systems Design and Implementation Objectives This course introduces the students to the fundamental principles of operating systems design, and gives them hands-on experience with operating systems installation, design and implementation. The students apply what they learned about operating systems design

Heller, Barbara

322

AN ANALYSIS OF THE DEUTERIUM FRACTIONATION OF STAR-FORMING CORES IN THE PERSEUS MOLECULAR CLOUD  

SciTech Connect (OSTI)

We have performed a pointed survey of N{sub 2}D{sup +} 2-1 and N{sub 2}D{sup +} 3-2 emission toward 64 N{sub 2}H{sup +}-bright starless and protostellar cores in the Perseus molecular cloud using the Arizona Radio Observatory Submillimeter Telescope and Kitt Peak 12 m telescope. We find a mean deuterium fractionation in N{sub 2}H{sup +}, R{sub D} = N(N{sub 2}D{sup +})/N(N{sub 2}H{sup +}), of 0.08, with a maximum R{sub D} = 0.2. In detected sources, we find no significant difference in the deuterium fractionation between starless and protostellar cores, nor between cores in clustered or isolated environments. We compare the deuterium fraction in N{sub 2}H{sup +} with parameters linked to advanced core evolution. We only find significant correlations between the deuterium fraction and increased H{sub 2} column density, as well as with increased central core density, for all cores. Toward protostellar sources, we additionally find a significant anticorrelation between R{sub D} and bolometric temperature. We show that the Perseus cores are characterized by low CO depletion values relative to previous studies of star-forming cores, similar to recent results in the Ophiuchus molecular cloud. We suggest that the low average CO depletion is the dominant mechanism that constrains the average deuterium fractionation in the Perseus cores to small values. While current equilibrium and dynamic chemical models are able to reproduce the range of deuterium fractionation values we find in Perseus, reproducing the scatter across the cores requires variation in parameters such as the ionization fraction or the ortho-to-para-H{sub 2} ratio across the cloud, or a range in core evolution timescales.

Friesen, R. K. [National Radio Astronomy Observatory, 520 Edgemont Rd., Charlottesville, VA 22903 (United States)] [National Radio Astronomy Observatory, 520 Edgemont Rd., Charlottesville, VA 22903 (United States); Kirk, H. M. [Origins Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1 (Canada)] [Origins Institute, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1 (Canada); Shirley, Y. L., E-mail: friesen@di.utoronto.ca [Steward Observatory, University of Arizona, 933 N. Cherry Ave., Tucson, AZ 85721 (United States)

2013-03-01T23:59:59.000Z

323

The First Billion Years Project: The escape fraction of ionising photons in the epoch of reionisation  

E-Print Network [OSTI]

Proto-galaxies forming in low-mass dark matter haloes are thought to provide the majority of ionising photons needed to reionise the Universe, due to their high escape fractions of ionising photons. We study how the escape fraction in high-redshift galaxies relates to the physical properties of the halo in which the galaxies form by computing escape fractions for 75801 haloes between redshifts 27 and 6 that were extracted from the FiBY project, high-resolution cosmological hydrodynamics simulations of galaxy formation. We find that the main constraint on the escape fraction is the presence of dense gas within 10 pc of the young sources that emit the majority of the ionising photons produced over the lifetime of the stellar population. This results in a strong mass dependence of the escape fraction. The lower potential well in haloes with virial mass below 10^8 solar mass results in lower column densities close to the sources that can be penetrated by the radiation from young, massive stars. In general only a ...

Paardekooper, Jan-Pieter; Vecchia, Claudio Dalla

2015-01-01T23:59:59.000Z

324

Identification of interactions in fractional-order systems with high dimensions  

SciTech Connect (OSTI)

This article proposes an approach to identify fractional-order systems with sparse interaction structures and high dimensions when observation data are supposed to be experimentally available. This approach includes two steps: first, it is to estimate the value of the fractional order by taking into account the solution properties of fractional-order systems; second, it is to identify the interaction coefficients among the system variables by employing the compressed sensing technique. An error analysis is provided analytically for this approach and a further improved approach is also proposed. Moreover, the applicability of the proposed approach is fully illustrated by two examples: one is to estimate the mutual interactions in a complex dynamical network described by fractional-order systems, and the other is to identify a high fractional-order and homogeneous sequential differential equation, which is frequently used to describe viscoelastic phenomena. All the results demonstrate the feasibility of figuring out the system mechanisms behind the data experimentally observed in physical or biological systems with viscoelastic evolution characters.

Ji, Xiaoxi; Wu, Yu; Sheng, Wenbo [School of Mathematical Sciences and Centre for Computational Systems Biology, Fudan University, Shanghai 200433 (China)] [School of Mathematical Sciences and Centre for Computational Systems Biology, Fudan University, Shanghai 200433 (China); Lin, Wei, E-mail: wlin@fudan.edu.cn [School of Mathematical Sciences and Centre for Computational Systems Biology, Fudan University, Shanghai 200433 (China) [School of Mathematical Sciences and Centre for Computational Systems Biology, Fudan University, Shanghai 200433 (China); Shanghai Key Laboratory of Data Science, LMNS, and Shanghai Center for Mathematical Sciences, Shanghai 200433 (China)

2014-06-15T23:59:59.000Z

325

Microbial Enhanced Oil Recovery in Fractional-Wet Systems: A Pore-Scale Investigation  

SciTech Connect (OSTI)

Microbial enhanced oil recovery (MEOR) is a technology that could potentially increase the tertiary recovery of oil from mature oil formations. However, the efficacy of this technology in fractional-wet systems is unknown, and the mechanisms involved in oil mobilization therefore need further investigation. Our MEOR strategy consists of the injection of ex situ produced metabolic byproducts produced by Bacillus mojavensis JF-2 (which lower interfacial tension (IFT) via biosurfactant production) into fractional-wet cores containing residual oil. Two different MEOR flooding solutions were tested; one solution contained both microbes and metabolic byproducts while the other contained only the metabolic byproducts. The columns were imaged with X-ray computed microtomography (CMT) after water flooding, and after MEOR, which allowed for the evaluation of the pore-scale processes taking place during MEOR. Results indicate that the larger residual oil blobs and residual oil held under relatively low capillary pressures were the main fractions recovered during MEOR. Residual oil saturation, interfacial curvatures, and oil blob sizes were measured from the CMT images and used to develop a conceptual model for MEOR in fractional-wet systems. Overall, results indicate that MEOR was effective at recovering oil from fractional-wet systems with reported additional oil recovered (AOR) values between 44 and 80%; the highest AOR values were observed in the most oil-wet system.

Armstrong, Ryan T.; Wildenschild, Dorthe (Oregon State U.)

2012-10-24T23:59:59.000Z

326

Stellar loci II. a model-free estimate of the binary fraction for field FGK stars  

E-Print Network [OSTI]

We propose a Stellar Locus OuTlier (SLOT) method to determine the binary fraction of main-sequence stars statistically. The method is sensitive to neither the period nor mass-ratio distributions of binaries, and able to provide model-free estimates of binary fraction for large numbers of stars of different populations in large survey volumes. We have applied the SLOT method to two samples of stars from the SDSS Stripe 82, constructed by combining the re-calibrated SDSS photometric data with respectively the spectroscopic information from the SDSS and LAMOST surveys. For the SDSS spectroscopic sample, we find an average binary fraction for field FGK stars of $41%\\pm2%$. The fractions decrease toward late spectral types, and are respectively $44%\\pm5%$, $43%\\pm3%$, $35%\\pm5%$, and $28%\\pm6%$ for stars of $g-i$ colors between 0.3 -- 0.6, 0.6 -- 0.9, 0.9 -- 1.2, and 1.2 - 1.6\\,mag. A modest metallicity dependence is also found. The fraction decreases with increasing metallicity. For stars of [Fe/H] between $-0.5$...

Yuan, Haibo; Xiang, Maosheng; Huang, Yang; Chen, Bingqiu

2014-01-01T23:59:59.000Z

327

A Measurement of the Semileptonic Branching Fraction of the B_s Meson  

SciTech Connect (OSTI)

We report a measurement of the inclusive semileptonic branching fraction of the B{sub s} meson using data collected with the BABAR detector in the center-of-mass energy region above the {gamma}(4S) resonance. We use the inclusive yield of {phi} mesons and the {phi} yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B{sub s} mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B{sub s} meson is determined to be {Beta}(B{sub s} {yields} {ell}{nu}X) = 9.5{sub -2.0}{sup +2.5}(stat){sub -1.9}{sup +1.1}(syst)%, where {ell} indicates the average of e and {mu}.

Lees, J.P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D.A.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lynch, G.; Koch, H.; Schroeder, T.; Asgeirsson, D.J.; Hearty, C.; Mattison, T.S.; McKenna, J.A.; /Imperial Coll., London /Annecy, LAPP /Barcelona U., ECM /INFN, Bari /Bari U. /INFN, Bari /INFN, Bari /Bari U. /Bergen U. /UC, Berkeley /Ruhr U., Bochum /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UC, Riverside /UC, Santa Barbara /UC, Santa Cruz /Caltech /Cincinnati U. /Colorado U. /Colorado State U. /Dortmund U. /Dresden, Tech. U. /Ecole Polytechnique /Edinburgh U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /INFN, Ferrara /INFN, Ferrara /Ferrara U. /Frascati /INFN, Genoa /Genoa U. /INFN, Genoa /INFN, Genoa /Genoa U. /INFN, Genoa /Indian Inst. Tech., Guwahati /Harvard U. /Harvey Mudd Coll. /Heidelberg U. /Humboldt U., Berlin /Imperial Coll., London /Iowa State U. /Iowa State U. /Johns Hopkins U. /Paris U., VI-VII /LLNL, Livermore /Liverpool U. /Queen Mary, U. of London /Royal Holloway, U. of London /Royal Holloway, U. of London /Louisville U. /Mainz U., Inst. Kernphys. /Manchester U. /Maryland U.; /more authors..

2012-06-12T23:59:59.000Z

328

Measurement of the branching fraction for $?(3686)\\to?K^+ K^-$  

E-Print Network [OSTI]

With $1.06\\times 10^8$ $\\psi(3686)$ events collected with the BESIII detector, the branching fraction of $\\psi(3686) \\to \\omega K^+ K^-$ is measured to be $(1.54 \\pm 0.04 \\pm 0.11) \\times 10^{-4}$. This is the most precise result to date, due to the largest $\\psi(3686)$ sample, improved signal reconstruction efficiency, good simulation of the detector performance, and a more accurate knowledge of the continuum contribution. Using the branching fraction of $J/\\psi \\to \\omega K^+ K^-$, the ratio $\\mathcal{B}(\\psi(3868) \\to K^+K^-) / \\mathcal{B}(J/\\psi \\to K^+K^-)$ is determined to be $(18.4 \\pm 3.7)\\,\\%$. This constitutes a significantly improved test of the $12\\,\\%$ rule, with the uncertainty now dominated by the $J/\\psi$ branching fraction.

BESIII Collaboration; M. Ablikim; M. N. Achasov; X. C. Ai; O. Albayrak; M. Albrecht; D. J. Ambrose; F. F. An; Q. An; J. Z. Bai; R. Baldini Ferroli; Y. Ban; D. W. Bennett; J. V. Bennett; M. Bertani; J. M. Bian; E. Boger; O. Bondarenko; I. Boyko; S. Braun; R. A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. Cetin; J. F. Chang; G. Chelkov; G. Chen; H. S. Chen; J. C. Chen; M. L. Chen; S. J. Chen; X. Chen; X. R. Chen; Y. B. Chen; H. P. Cheng; X. K. Chu; Y. P. Chu; D. Cronin-Hennessy; H. L. Dai; J. P. Dai; D. Dedovich; Z. Y. Deng; A. Denig; I. Denysenko; M. Destefanis; W. M. Ding; Y. Ding; C. Dong; J. Dong; L. Y. Dong; M. Y. Dong; S. X. Du; J. Z. Fan; J. Fang; S. S. Fang; Y. Fang; L. Fava; C. Q. Feng; C. D. Fu; O. Fuks; Q. Gao; Y. Gao; C. Geng; K. Goetzen; W. X. Gong; W. Gradl; M. Greco; M. H. Gu; Y. T. Gu; Y. H. Guan; L. B. Guo; T. Guo; Y. P. Guo; Z. Haddadi; S. Han; Y. L. Han; F. A. Harris; K. L. He; M. He; Z. Y. He; T. Held; Y. K. Heng; Z. L. Hou; C. Hu; H. M. Hu; J. F. Hu; T. Hu; G. M. Huang; G. S. Huang; H. P. Huang; J. S. Huang; L. Huang; X. T. Huang; Y. Huang; T. Hussain; C. S. Ji; Q. Ji; Q. P. Ji; X. B. Ji; X. L. Ji; L. L. Jiang; L. W. Jiang; X. S. Jiang; J. B. Jiao; Z. Jiao; D. P. Jin; S. Jin; T. Johansson; A. Julin; N. Kalantar-Nayestanaki; X. L. Kang; X. S. Kang; M. Kavatsyuk; B. Kloss; B. Kopf; M. Kornicer; W. Kuehn; A. Kupsc; W. Lai; J. S. Lange; M. Lara; P. Larin; M. Leyhe; C. H. Li; Cheng Li; Cui Li; D. Li; D. M. Li; F. Li; G. Li; H. B. Li; J. C. Li; Jin Li; K. Li; K. Li; P. R. Li; Q. J. Li; T. Li; W. D. Li; W. G. Li; X. L. Li; X. N. Li; X. Q. Li; Z. B. Li; H. Liang; Y. F. Liang; Y. T. Liang; D. X. Lin; B. J. Liu; C. L. Liu; C. X. Liu; F. H. Liu; Fang Liu; Feng Liu; H. B. Liu; H. H. Liu; H. M. Liu; J. Liu; J. P. Liu; K. Liu; K. Y. Liu; P. L. Liu; Q. Liu; S. B. Liu; X. Liu; Y. B. Liu; Z. A. Liu; Zhiqiang Liu; Zhiqing Liu; H. Loehner; X. C. Lou; G. R. Lu; H. J. Lu; H. L. Lu; J. G. Lu; Y. Lu; Y. P. Lu; C. L. Luo; M. X. Luo; T. Luo; X. L. Luo; M. Lv; X. R. Lyu; F. C. Ma; H. L. Ma; Q. M. Ma; S. Ma; T. Ma; X. Y. Ma; F. E. Maas; M. Maggiora; Q. A. Malik; Y. J. Mao; Z. P. Mao; J. G. Messchendorp; J. Min; T. J. Min; R. E. Mitchell; X. H. Mo; Y. J. Mo; H. Moeini; C. Morales Morales; K. Moriya; N. Yu. Muchnoi; H. Muramatsu; Y. Nefedov; F. Nerling; I. B. Nikolaev; Z. Ning; S. Nisar; X. Y. Niu; S. L. Olsen; Q. Ouyang; S. Pacetti; M. Pelizaeus; H. P. Peng; K. Peters; J. L. Ping; R. G. Ping; R. Poling; M. Qi; S. Qian; C. F. Qiao; L. Q. Qin; N. Qin; X. S. Qin; Y. Qin; Z. H. Qin; J. F. Qiu; K. H. Rashid; C. F. Redmer; M. Ripka; G. Rong; X. D. Ruan; A. Sarantsev; K. Schoenning; S. Schumann; W. Shan; M. Shao; C. P. Shen; X. Y. Shen; H. Y. Sheng; M. R. Shepherd; W. M. Song; X. Y. Song; S. Spataro; B. Spruck; G. X. Sun; J. F. Sun; S. S. Sun; Y. J. Sun; Y. Z. Sun; Z. J. Sun; Z. T. Sun; C. J. Tang; X. Tang; I. Tapan; E. H. Thorndike; M. Tiemens; D. Toth; M. Ullrich; I. Uman; G. S. Varner; B. Wang; D. Wang; D. Y. Wang; K. Wang; L. L. Wang; L. S. Wang; M. Wang; P. Wang; P. L. Wang; Q. J. Wang; S. G. Wang; W. Wang; X. F. Wang; Y. D. Wang; Y. F. Wang; Y. Q. Wang; Z. Wang; Z. G. Wang; Z. H. Wang; Z. Y. Wang; D. H. Wei; J. B. Wei; P. Weidenkaff; S. P. Wen; M. Werner; U. Wiedner; M. Wolke; L. H. Wu; N. Wu; Z. Wu; L. G. Xia; Y. Xia; D. Xiao; Z. J. Xiao; Y. G. Xie; Q. L. Xiu; G. F. Xu; L. Xu; Q. J. Xu; Q. N. Xu; X. P. Xu; Z. Xue; L. Yan; W. B. Yan; W. C. Yan; Y. H. Yan; H. X. Yang; L. Yang; Y. Yang; Y. X. Yang; H. Ye; M. Ye; M. H. Ye; B. X. Yu; C. X. Yu; H. W. Yu; J. S. Yu; S. P. Yu; C. Z. Yuan; W. L. Yuan; Y. Yuan; A. Yuncu; A. A. Zafar; A. Zallo; S. L. Zang; Y. Zeng; B. X. Zhang; B. Y. Zhang; C. Zhang; C. B. Zhang; C. C. Zhang; D. H. Zhang; H. H. Zhang; H. Y. Zhang; J. J. Zhang; J. Q. Zhang; J. W. Zhang; J. Y. Zhang; J. Z. Zhang; S. H. Zhang; X. J. Zhang; X. Y. Zhang; Y. Zhang; Y. H. Zhang; Z. H. Zhang; Z. P. Zhang; Z. Y. Zhang; G. Zhao; J. W. Zhao; Lei Zhao; Ling Zhao; M. G. Zhao; Q. Zhao; Q. W. Zhao; S. J. Zhao; T. C. Zhao; X. H. Zhao; Y. B. Zhao; Z. G. Zhao; A. Zhemchugov; B. Zheng; J. P. Zheng; Y. H. Zheng; B. Zhong; L. Zhou; Li Zhou; X. Zhou; X. K. Zhou; X. R. Zhou; X. Y. Zhou; K. Zhu; K. J. Zhu; X. L. Zhu; Y. C. Zhu; Y. S. Zhu; Z. A. Zhu; J. Zhuang; B. S. Zou; J. H. Zou

2014-05-07T23:59:59.000Z

329

Enzymatic Digestibility of Corn Stover Fractions in Response to Fungal Pretreatment  

SciTech Connect (OSTI)

Corn stover fractions (leaves, cobs, and stalks) were studied for enzymatic digestibility after pretreatment with a white rot fungus, Ceriporiopsis subvermispora. Among the three fractions, leaves had the least recalcitrance to fungal pretreatment and the lignin degradation reached 45% after 30 days of pretreatment. The lignin degradation of stalks and cobs was similar but was significantly lower than that of leaves (p < 0.05). For all fractions, xylan and glucan degradation followed a pattern similar to lignin degradation, with leaves having a significantly higher percentage of degradation (p < 0.05). Hydrolytic enzyme activity also revealed that the fungus was more active in the degradation of carbohydrates in leaves. As a result of fungal pretreatment, the highest sugar yield, however, was obtained with corn cobs.

Cui, Z. F.; Wan, C. X.; Shi, J.; Sykes, R. W.; Li, Y. B.

2012-05-30T23:59:59.000Z

330

Structural group composition and thermodynamic properties of petroleum and coal tar fractions  

SciTech Connect (OSTI)

The improved G-L method was developed for determining the structural group composition of petroleum and coal tar fractions by using experimental values of refraction index, density, molecular weight, and S, N, O, and olefinic group content. The method is useful for fractions boiling in the range 30--500 C containing S, N, O and in total up to 10%, not limiting the distribution of the carbon atoms between aromatic, naphthenic, and paraffinic structures. Several correlations are proposed for prediction of the thermodynamic properties of petroleum and coal tar fractions, i.e., molar volume; surface tension; heat capacity in gas, liquid, and solid phases as a function of temperature; and also critical properties standard heat and entropy of formation, and temperature and entropy of melting. The method and these correlations have been tested on hydrocarbons and other organic compounds with satisfactory accuracy.

Guilyazetdinov, L.P. [Gubkin State Academy of Oil and Gas, Moscow (Russian Federation). Dept. of Technology of Petroleum and Gas Processing

1995-04-01T23:59:59.000Z

331

Boron isotope geochemistry during diagenesis. Part I. Experimental determination of fractionation during illitization of smectite  

Science Journals Connector (OSTI)

Experiments were performed to measure the isotopic fractionation of boron between illite/smectite (I/S) clay minerals and water as a function of temperature (300° and 350°C) and degree of illitization. Corresponding changes in the oxygen isotopes were monitored as an indication of the approach to equilibrium. The kinetics of the B-isotope exchange follows the mineralogical restructuring of smectite as it recrystallizes to illite. An initial decline in ?11BI/S occurs when the I/S is randomly ordered (RO). The ?11BI/S values reach a plateau during R1 ordering of the I/S, representing a metastable condition. The greatest change in ?11BI/S is observed during long-range (R3) ordering of the I/S when neoformation occurs. Values of ?11BI/S measured on the equilibrium reaction products were used to construct a B-isotope fractionation curve. There is a linear correlation among data from these experiments and 1100°C basaltic melt-fluid fractionation experiments (Hervig and Moore, 2000) that can be extrapolated to include adsorption experiments at 25°C (Palmer et al., 1987). Unlike other stable isotopic systems (e.g., oxygen) there is no mineral-specific fractionation of B-isotopes, but rather a coordination dependence of the fractionation. Under diagenetic conditions B is predominantly in trigonal coordination in fluids but substitutes in tetrahedral sites of silicates. The preference of 10B for tetrahedral bonds is the major fractionating factor of B in silicates.

Lynda B Williams; Richard L Hervig; John R Holloway; Ian Hutcheon

2001-01-01T23:59:59.000Z

332

Volumetric Image Guidance Using Carina vs Spine as Registration Landmarks for Conventionally Fractionated Lung Radiotherapy  

SciTech Connect (OSTI)

Purpose: To compare the relative accuracy of 2 image guided radiation therapy methods using carina vs spine as landmarks and then to identify which landmark is superior relative to tumor coverage. Methods and Materials: For 98 lung patients, 2596 daily image-guidance cone-beam computed tomography scans were analyzed. Tattoos were used for initial patient alignment; then, spine and carina registrations were performed independently. A separate analysis assessed the adequacy of gross tumor volume, internal target volume, and planning target volume coverage on cone-beam computed tomography using the initial, middle, and final fractions of radiation therapy. Coverage was recorded for primary tumor (T), nodes (N), and combined target (T+N). Three scenarios were compared: tattoos alignment, spine registration, and carina registration. Results: Spine and carina registrations identified setup errors {>=}5 mm in 35% and 46% of fractions, respectively. The mean vector difference between spine and carina matching had a magnitude of 3.3 mm. Spine and carina improved combined target coverage, compared with tattoos, in 50% and 34% (spine) to 54% and 46% (carina) of the first and final fractions, respectively. Carina matching showed greater combined target coverage in 17% and 23% of fractions for the first and final fractions, respectively; with spine matching, this was only observed in 4% (first) and 6% (final) of fractions. Carina matching provided superior nodes coverage at the end of radiation compared with spine matching (P=.0006), without compromising primary tumor coverage. Conclusion: Frequent patient setup errors occur in locally advanced lung cancer patients. Spine and carina registrations improved combined target coverage throughout the treatment course, but carina matching provided superior combined target coverage.

Lavoie, Caroline; Higgins, Jane; Bissonnette, Jean-Pierre [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, M5G 2M9 (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, M5G 2M9 (Canada); Le, Lisa W. [Department of Biostatistics, Princess Margaret Hospital, Toronto, Ontario, M5G 2M9 (Canada)] [Department of Biostatistics, Princess Margaret Hospital, Toronto, Ontario, M5G 2M9 (Canada); Sun, Alexander; Brade, Anthony; Hope, Andrew; Cho, John [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, M5G 2M9 (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, M5G 2M9 (Canada); Bezjak, Andrea, E-mail: andrea.bezjak@rmp.uhn.on.ca [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, M5G 2M9 (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, M5G 2M9 (Canada)

2012-12-01T23:59:59.000Z

333

The effect of gravel size fraction on the distribution coefficients of selected radionuclides radionuclides  

SciTech Connect (OSTI)

This manuscript addresses the consequences of the common practice of assuming that the gravel fraction of sediments does not participate in sorption reactions and thus sorption quantified by the distribution coefficient (Kd) construct can be estimated from laboratory tests on < 2mm fraction of sediments. As shown within the use of this common assumption can lead to inaccurate estimates of the mobility and sorption capacity of key radionuclides (Tc, U, and Np) at the Hanford Site where gravel dominates the lower Hanford formation and upper Ringold Formation. Batch sorption and column experiments showed that the distribution coefficient measured using only < 2mm fraction were not in agreement with those obtained from the bulk sediments depending on the radionuclide. The least reactive radionuclide, Tc showed the lowest effects from the presence of gravel. However, differences between measured Kds using < 2mm fractions of the sediment and the Kds measured on the bulk sediment were significant for strongly reactive radionuclides such as Np, especially on the sediment with gravel fractions that contained highly reactive sites. Highly reactive sites in the gravel fraction were attributed to the presence of Fe oxides coatings and/or reactive fracture faces on the gravel surfaces. Gravel correction factors that use the sum of the Kd,<2 mm and Kd,>2 mm values to estimate the Kd for the bulk sediment were found to best describe Kds for radionuclides on the bulk sediment. However, more detailed characterization of gravel surfaces should be also conducted to identify those gravels with higher reactive sorbents, if present. Gravel correction factors should be considered to predict precisely the sorption capacity of bulk sediments that contain more than 10% gravel and to estimate the mobility of contaminants in subsurface environments.

Um, Wooyong; Serne, R. Jeffrey; Last, George V.; Glossbrenner, Ellwood T.

2009-06-26T23:59:59.000Z

334

Verification of Gamma Knife extend system based fractionated treatment planning using EBT2 film  

SciTech Connect (OSTI)

Purpose: This paper presents EBT2 film verification of fractionated treatment planning with the Gamma Knife (GK) extend system, a relocatable frame system for multiple-fraction or serial multiple-session radiosurgery.Methods: A human head shaped phantom simulated the verification process for fractionated Gamma Knife treatment. Phantom preparation for Extend Frame based treatment planning involved creating a dental impression, fitting the phantom to the frame system, and acquiring a stereotactic computed tomography (CT) scan. A CT scan (Siemens, Emotion 6) of the phantom was obtained with following parameters: Tube voltage—110 kV, tube current—280 mA, pixel size—0.5 × 0.5 and 1 mm slice thickness. A treatment plan with two 8 mm collimator shots and three sectors blocking in each shot was made. Dose prescription of 4 Gy at 100% was delivered for the first fraction out of the two fractions planned. Gafchromic EBT2 film (ISP Wayne, NJ) was used as 2D verification dosimeter in this process. Films were cut and placed inside the film insert of the phantom for treatment dose delivery. Meanwhile a set of films from the same batch were exposed from 0 to 12 Gy doses for calibration purposes. An EPSON (Expression 10000 XL) scanner was used for scanning the exposed films in transparency mode. Scanned films were analyzed with inhouse written MATLAB codes.Results: Gamma index analysis of film measurement in comparison with TPS calculated dose resulted in high pass rates >90% for tolerance criteria of 1%/1 mm. The isodose overlay and linear dose profiles of film measured and computed dose distribution on sagittal and coronal plane were in close agreement.Conclusions: Through this study, the authors propose treatment verification QA method for Extend frame based fractionated Gamma Knife radiosurgery using EBT2 film.

Natanasabapathi, Gopishankar; Bisht, Raj Kishor [Gamma Knife Unit, Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029 (India)] [Gamma Knife Unit, Department of Neurosurgery, Neurosciences Centre, All India Institute of Medical Sciences, Ansari Nagar, New Delhi 110029 (India)

2013-12-15T23:59:59.000Z

335

Field Demonstration of 0.2 Grams Per Horsepower-Hour (g/bhp-hr) Oxides of Nitrogen (NOx) Natural  

E-Print Network [OSTI]

: · Reducing health and environmental impacts from air pollution, and greenhouse gas emissions related pollution and greenhouse gas emissions beyond applicable standards, and that benefit natural gas ratepayers of nitrogen (NOx) emission standard of 0.20 g/bhp-hr for heavy duty engines to reduce levels of this critical

336

Introducing “Green” and “Nongreen” Aspects of Noble Metal Nanoparticle Synthesis: An Inquiry-Based Laboratory Experiment for Chemistry and Engineering Students  

Science Journals Connector (OSTI)

Introducing “Green” and “Nongreen” Aspects of Noble Metal Nanoparticle Synthesis: An Inquiry-Based Laboratory Experiment for Chemistry and Engineering Students ... (5) For example, one of the most widely used fabrication methods for colloidal AgNPs and AuNPs involves the high temperature, energy consuming reduction of silver nitrate (by Lee–Meisel(6, 7)) and tetrachloroauric acid (by Turkevich(8, 9)), respectively, by trisodium citrate. ...

Sesha L. A. Paluri; Michelle L. Edwards; Nhi H. Lam; Elizabeth M. Williams; Allie Meyerhoefer; Ioana E. Pavel Sizemore

2014-10-29T23:59:59.000Z

337

A new fractional interpolation-based smoothing scheme for variable structure control  

Science Journals Connector (OSTI)

A new fractional interpolation-based smoothing scheme is proposed for variable structure control. Comparing with the conventional fractional interpolation scheme, as well as other similar smoothing schemes such as the hyperbolic tangent and the exponential smoothing schemes, the new scheme achieves the designated tracking precision bound with an adequate and yet moderate gain. Comparing with the well known saturation scheme, the new scheme achieves a smoother control profile, and possesses extra flexibility in adjusting the equivalent control gain while retaining the same precision bound. Substantial comparisons are conducted to confirm the effectiveness of the proposed smoothing control scheme.

Jian-Xin Xu; Ya-Jun Pan

2012-01-01T23:59:59.000Z

338

Radial Mass Fraction Distributions In Ar+N Plasmas Produced In A Wall-Stabilized Arc  

SciTech Connect (OSTI)

Radial distributions of Ar mass fractions in plasmas produced in a wall-stabilized arc have been studied. Measurements have been performed for seven different mixtures of Ar+N2. The obtained results show that the radial distributions of Ar mass fractions strongly depend on the chemical composition of the plasma. In plasmas containing large amount of Ar the distributions have local minima at the arc axis (in high temperature plasma regions), whereas in plasmas consisting mainly of nitrogen the distributions reveal maxima on the discharge axis.

KsiaPzek, Ireneusz [Institute of Physics, Opole University, ul. Oleska 48, 45-052 Opole (Poland)

2006-01-15T23:59:59.000Z

339

Fraction of Stopped Antiprotons which Annihilate on Free Hydrogen in Propane  

Science Journals Connector (OSTI)

Antiprotons were stopped in a liquid-propane bubble chamber. In a sample of film containing 75 000 annihilations at rest, 21 examples of the reactions p¯p??+?- or p¯p?K+K- were identified. This number, together with the previously measured branching ratios of these channels in liquid hydrogen, leads to a determination that (11±3)% of the antiprotons annihilate on free protons. The remaining 89% annihilate on bound nucleons in carbon. This fraction is markedly higher than the fraction of ?- at rest which charge exchange on free protons in similar hydrocarbons. An explanation of the large difference is suggested.

W. T. Pawlewicz; C. T. Murphy; J. G. Fetkovich; T. Dombeck; M. Derrick; T. Wangler

1970-12-01T23:59:59.000Z

340

Emergent U(1) gauge theory with fractionalized boson/fermion from the Bose condensation of excitons in a multiband insulator  

Science Journals Connector (OSTI)

Fractionalized phases are studied in a low energy theory of exciton Bose condensate in a multiband insulator. It is shown that U(1) gauge theory with either fractionalized boson or fermion can emerge out of a single model depending on the coupling constants. Both the statistics and spin of the fractionalized particles are dynamically determined, satisfying the spin-statistics theorem in the continuum limit. We present two mutually consistent descriptions for the fractionalization. In the first approach, it is shown that fractionalized degree of freedom emerges from reduced phase space constrained by strong interaction and that the U(1) gauge field arises as a collective excitation of the low energy modes. In the second approach, complementary descriptions are provided for the fractionalization based on world line picture of the original excitons. The emergent gauge structure is identified from the fluctuating web of exciton world lines which, in turn, realizes the string net condensation in a space-time picture.

Sung-Sik Lee and Patrick A. Lee

2005-12-02T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Introducing the Google Maps API  

Science Journals Connector (OSTI)

On today’s Web, mapping solutions are a natural ingredient. We use them to see the location of things, to search for the position of an address, to get driving directions, and to do numerous other things. Most...

Gabriel Svennerberg

2010-01-01T23:59:59.000Z

342

Wear 251 (2001) 10031008 Differential application of wear models to fractional thin films  

E-Print Network [OSTI]

Wear 251 (2001) 1003­1008 Differential application of wear models to fractional thin films Thierry Institute, Troy, NY 12180, USA b Department of Mechanical Engineering, University of Florida, Gainesville, FL 32611, USA Abstract Global application of bulk wear models, originally developed for monolithic

Sawyer, Wallace

343

Boron and lead isotope signatures of subduction-zone mlange formation: Hybridization and fractionation along the  

E-Print Network [OSTI]

Boron and lead isotope signatures of subduction-zone mélange formation: Hybridization Angeles, CA, 90095, USA Accepted 9 January 2007 Editor: S.L. Goldstein Abstract The B and Pb isotope studies have directly addressed potential fractionation of B isotopes and U­Th­Pb by analysis of high

Bebout, Gray E.

344

Experimental measurement of boron isotope fractionation in seawater Kateryna Klochko a,, Alan J. Kaufman a  

E-Print Network [OSTI]

Experimental measurement of boron isotope fractionation in seawater Kateryna Klochko a,, Alan J Editor: M.L. Delaney Abstract The boron isotopic composition of marine carbonates is considered and thermodynamic isotope exchange reactions between the two dominant boron-bearing species in seawater: boric acid

Kaufman, Alan Jay

345

Global well-posedness for the fractional Schrödinger–Boussinesq system  

Science Journals Connector (OSTI)

Abstract In this paper, we study the fractional Schrödinger–Boussinesq system raised in the laser and plasma physics, where the nonlinear term f ( n ) can be chosen as a large kind of functions. We obtain that it is global well-posed in H s ( R ) in one dimensional space, when s ? 1 .

Lijia Han; Jingjun Zhang; Boling Guo

2014-01-01T23:59:59.000Z

346

COMPARISON OF FRACTIONAL AND GEODESIC ANISOTROPY IN DIFFUSION TENSOR IMAGES OF 90 MONOZYGOTIC AND DIZYGOTIC TWINS  

E-Print Network [OSTI]

COMPARISON OF FRACTIONAL AND GEODESIC ANISOTROPY IN DIFFUSION TENSOR IMAGES OF 90 MONOZYGOTIC anisotropy (FA), and geodesic anisotropy (GA), which measures the geodesic distance between tensors be used to map disease effects on white matter. A related scalar measure, the Geodesic Anisotropy (GA) [3

Thompson, Paul

347

THE GENESIS SOLAR WIND CONCENTRATOR TARGET: MASS FRACTIONATION CHARACTERISED BY NE ISOTOPES  

SciTech Connect (OSTI)

The concentrator on Genesis provides samples of increased fluences of solar wind ions for precise determination of the oxygen isotopic composition of the solar wind. The concentration process caused mass fractionation as function of the radial target position. They measured the fractionation using Ne released by UV laser ablation along two arms of the gold cross from the concentrator target to compare measured Ne with modeled Ne. The latter is based on simulations using actual conditions of the solar wind during Genesis operation. Measured Ne abundances and isotopic composition of both arms agree within uncertainties indicating a radial symmetric concentration process. Ne data reveal a maximum concentration factor of {approx} 30% at the target center and a target-wide fractionation of Ne isotopes of 3.8%/amu with monotonously decreasing {sup 20}Ne/{sup 22}Ne ratios towards the center. The experimentally determined data, in particular the isotopic fractionation, differ from the modeled data. They discuss potential reasons and propose future attempts to overcome these disagreements.

WIENS, ROGER C. [Los Alamos National Laboratory; OLINGER, C. [Los Alamos National Laboratory; HEBER, V.S. [Los Alamos National Laboratory; REISENFELD, D.B. [Los Alamos National Laboratory; BURNETT, D.S. [Los Alamos National Laboratory; ALLTON, J.H. [Los Alamos National Laboratory; BAUR, H. [Los Alamos National Laboratory; WIECHERT, U. [Los Alamos National Laboratory; WIELER, R. [Los Alamos National Laboratory

2007-01-02T23:59:59.000Z

348

Title: Electron-Hole Asymmetric Integer and Fractional Quantum Hall Effect in Bilayer Graphene  

E-Print Network [OSTI]

Title: Electron-Hole Asymmetric Integer and Fractional Quantum Hall Effect in Bilayer Graphene graphene is predicted to pro- duce novel and tunable FQH ground states. Here we present local electronic compressibility measurements of the FQH effect in the lowest Landau level of bilayer graphene. We observe

Yacoby, Amir

349

investigating the source, transport, and isotope fractionation of water vapor in the atmospheric boundary layer  

E-Print Network [OSTI]

investigating the source, transport, and isotope fractionation of water vapor in the atmospheric cospectral similarity for temperature and water vapor isotope fluxes. mixing ratio generator Routine field use in water vapor isotope research. The unit generates a stable water vapor mixing ratio by measuring

Minnesota, University of

350

Fractional Snow-Cover Mapping Through Artificial Neural Network Analysis of MODIS Surface Reflectance.  

E-Print Network [OSTI]

are especially applicable to mapping snow-cover extent in forested areas where spatial mixing of surface components is nonlinear. This study developed an ANN approach to snow-fraction mapping. A feed-forward ANN was trained with backpropagation to estimate FSC...

Dobreva, Iliyana D.

2010-07-14T23:59:59.000Z

351

Nuclear Assembly with k DNA in Fractionated Xenopus Egg Extracts: An Unexpected Role for Glycogen in  

E-Print Network [OSTI]

Nuclear Assembly with k DNA in Fractionated Xenopus Egg Extracts: An Unexpected Role for Glycogen. Crude extracts of Xenopus eggs are capable of nuclear assembly around chromatin templates or even around protein-free, naked DNA templates. Here the requirements for nuclear assembly around a naked DNA template

Forbes, Douglass

352

Determination of hydrogen density of states in amorphous silicon using fractional evolution experiments  

SciTech Connect (OSTI)

Hydrogen plays an important role in the electronic behavior, structure and stability of amorphous silicon films. Therefore, determination of the hydrogen density of states (DOS) and correlation of the hydrogen DOS with the electronic film properties are important research goals. The authors have developed a novel method for determination of hydrogen DOS in silicon films, based on fractional evolution experiments. Fractional evolution experiments are performed by subjecting a silicon film to a series of linear, alternating heating and cooling ramps, while monitoring the hydrogen evolution rate. The fractional evolution data can be analyzed using two complementary methods, the fixed frequency factor approach and Arrhenius analysis. Using a rigorous, mean-field evolution model, they demonstrate the applicability of the two approaches to obtaining the hydrogen DOS in silicon films. They further validate both methods by analyzing experimental fractional evolution data for an amorphous silicon carbide film. Both types of analysis yield a similar double peaked density of states for the a-Si:C:H:D film.

Franz, A.J.; Jackson, W.B.; Gland, J.L.

1997-07-01T23:59:59.000Z

353

Oxide Electronic Conductivity and Hydrogen Pickup Fraction in Zr alloys Adrien Coueta  

E-Print Network [OSTI]

hydrogen ingress can cause cladding embrittlement and limit cladding lifetime. However, mechanisticOxide Electronic Conductivity and Hydrogen Pickup Fraction in Zr alloys Adrien Coueta , Arthur T, 77818 Moret-sur-Loing, France INTRODUCTION The hydrogen pick-up during cladding corrosion is a critical

Motta, Arthur T.

354

Stable carbon fractionation in size-segregated aerosol particles produced by controlled biomass burning  

Science Journals Connector (OSTI)

Abstract Six different biomass fuel types (wood pellets, sunflower stalk pellets, straw pellets, buckwheat shells, mixed biomass waste pellets, and grain screenings) and wastewater sludge pellets were burned under controlled conditions to determine the effect of the biomass type on the emitted particulate matter mass and stable carbon isotope composition of bulk and size-segregated particles. Aerosol particles were sampled using the total suspended particle (TSP) sampler and a micro-orifice uniform deposit impactor (MOUDI). The results demonstrated that particle emissions were dominated by the submicron particles (size <1 µm) in all biomass types. However, significant differences in emissions of submicron particles and their dominant sizes were found between different biomass fuels. The isotopic fractionation between aerosol particles and original biomass material varied from ?0.94±0.23‰ to 1.12±0.16‰. The largest negative fractionation ?0.94±0.23‰ was obtained for the wood pellet fuel type while the largest positive isotopic fractionation (1.12±0.16‰) was observed during the grain screenings combustion. The carbon isotope composition of MOUDI samples compared very well with the isotope composition of TSP samples indicating consistency of the results. The measurements of the stable carbon isotope ratio in size-segregated aerosol particles suggested that combustion processes could strongly affect isotopic fractionation in aerosol particles of different sizes thereby potentially affecting an interpretation of ambient atmospheric observations.

A. Garbaras; A. Masalaite; I. Garbariene; D. Ceburnis; E. Krugly; V. Remeikis; E. Puida; K. Kvietkus; D. Martuzevicius

2015-01-01T23:59:59.000Z

355

Extreme lithium isotopic fractionation during continental weathering revealed in saprolites from South Carolina  

E-Print Network [OSTI]

Extreme lithium isotopic fractionation during continental weathering revealed in saprolites from in revised form 6 July 2004 Abstract The lithium concentration and isotopic composition of two saprolites the behavior of lithium isotopes during continental weathering. Both saprolites show a general trend

Rudnick, Roberta L.

356

Dgradabilit compare dans le rumen des diffrentes fractions azotes des feuilles  

E-Print Network [OSTI]

bout de 1, 3, 6, 9, 15, 24 et 48 h. Après lavage et séchage à 60 °C, on a dosé dans le résidu l dégradation des fractions NDF et AFD du foin sont prati- quement identiques. Les cinétiques de dégradation de

Boyer, Edmond

357

Influence of structural variability upon sound perception: usefulness of fractional factorial  

E-Print Network [OSTI]

to listeners during two experi- ments, in which they had to evaluate the dissimilarity of each sound to a reference, representing the nominal state of the device. In the first experiment, six factors, assumed: Structural uncertainties; Sound Perception; Fractional factorial designs; Taguchi tables; Listening test

Boyer, Edmond

358

General Solution of a Fractional Diffusion-Advection Equation for Solar Cosmic-Ray Transport  

E-Print Network [OSTI]

In this effort we exactly solve the fractional diffusion-advection equation for solar cosmic-ray transport proposed in \\cite{LE2014} and give its {\\it general solution} in terms of hypergeometric distributions. Also, we regain all the results and approximations given in \\cite{LE2014} as {\\it particular cases} of our general solution.

M. C. Rocca; A. R. Plastino; A. Plastino; A. L. De Paoli

2014-11-30T23:59:59.000Z

359

Measurement of the absolute branching fraction for D(0) -> K- pi+  

E-Print Network [OSTI]

Using 1.79 fb-1 of data recorded by the CLEO II detector we have measured the absolute branching fraction for D0 --> K-pi+. The angular correlation between the pi+ emitted in the decay D*+ --> D0pi+, and the jet direction in e+e- --> ccBAR events...

Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H.

1993-11-01T23:59:59.000Z

360

Murchison presolar carbon grains of different density fractions: A Raman spectroscopic perspective  

E-Print Network [OSTI]

for inorganic sp2 -bonded carbon. Based on their D/G intensity ratios, those grains were grouped.1), "glassy carbon" (D/G > 1.1), and "unusual sp2 -bonded graphitic car- bon" (with extremely intense 2ndMurchison presolar carbon grains of different density fractions: A Raman spectroscopic perspective

Note: This page contains sample records for the topic "introduced fractional horsepower" 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

Using hyperspectral vegetation indices to estimate the fraction of photosynthetically active radiation absorbed by corn canopies  

E-Print Network [OSTI]

). 1. Introduction The fraction of incoming solar radiation (400-700 nm spectral range) absorbed the exchange of energy, mass, and momentum between the land surface and the atmosphere, and thus a key state several advantages ­ they are non-destructive, uniform, can be performed rapidly, and no complicated

Myneni, Ranga B.

362

General Solution of a Fractional Diffusion-Advection Equation for Solar Cosmic-Ray Transport  

E-Print Network [OSTI]

In this effort we exactly solve the fractional diffusion-advection equation for solar cosmic-ray transport proposed in \\cite{LE2014} and give its {\\it general solution} in terms of hypergeometric distributions. Also, we regain all the results and approximations given in \\cite{LE2014} as {\\it particular cases} of our general solution.

Rocca, M C; Plastino, A; De Paoli, A L

2014-01-01T23:59:59.000Z

363

Identifying a High Fraction of the Human Genome to be under Selective Constraint Using GERP++  

E-Print Network [OSTI]

Identifying a High Fraction of the Human Genome to be under Selective Constraint Using GERP genomes leverage comparative sequence information by looking for regions that exhibit evidence identify over 1.3 million constrained elements spanning over 7% of the human genome. We predict a higher

Sidow, Arend

364

Journal of Computational Acoustics, Vol. 8, No. 1 (2000) 139156 CONTINUED-FRACTION ABSORBING BOUNDARY CONDITIONS  

E-Print Network [OSTI]

of the Engquist-Majda boundary conditions, their practical success is limited by the difficulties posed-FRACTION ABSORBING BOUNDARY CONDITIONS FOR THE WAVE EQUATION MURTHY N. GUDDATI Department of Civil Engineering, North Revised 1 October 1999 Absorbing boundary conditions are generally required for numerical modeling of wave

Guddati, Murthy N.

365

H2O absorption spectroscopy for determination of temperature and H2O mole fraction in  

E-Print Network [OSTI]

for in situ determination of temperature and H2O mole fraction in silica SiO2 particle-forming flames. Frequency modulation of near-infrared emission from a semiconductor diode laser was used to obtain multiple-phase combustion synthesis of particles is an industrially significant synthesis method for the pro- duction

Wooldridge, Margaret S.

366

Hydrogen isotope fractionation in freshwater and marine algae: II. Temperature and nitrogen limited growth rate effects  

E-Print Network [OSTI]

Hydrogen isotope fractionation in freshwater and marine algae: II. Temperature and nitrogen limited Accepted 7 November 2008 Available online 17 November 2008 a b s t r a c t Zhang and Sachs [Hydrogen. Introduction Hydrogen isotope ratios in plant and algal lipids from sediments are increasingly used

Sachs, Julian P.

367

Theoretical principles of the use of coal fractions with different densities for pyrolysis  

SciTech Connect (OSTI)

To obtain process gas and liquid products upon thermal action on low-grade (D, DG, and G) coals, it is reasonable to pyrolyze the lightest organic fractions with enhanced quality characteristics in terms of both the yield of liquid products (pyrolysis tar) and the component composition of the gas (hydrogen and methane hydrocarbons).

A.M. Gyul'maliev; S.G. Gagarin [Institute for Fossil Fuels, Moscow (Russian Federation)

2009-07-01T23:59:59.000Z

368

(Published in Environmental Science and Pollution Research) Potentially toxic element fractionation in technosoils using two  

E-Print Network [OSTI]

(Published in Environmental Science and Pollution Research) Potentially toxic element fractionation elements (Zn, Pb, Cd, As, and Sb) in contaminated technosoils of two former smelting and mining areas using. Surface soils were samples from a waste landfill contaminated with Zn, Pb, and Cd located at Mortagne

Boyer, Edmond

369

Sorption of Aldrich humic acids onto hematite: Insights into fractionation phenomena by  

E-Print Network [OSTI]

S1 Sorption of Aldrich humic acids onto hematite: Insights into fractionation phenomena by Electro, the absorbance spectra obtained for the initial PAHA sample and of supernatants from sorption experiments. Table S1: initial PAHA concentration and pH of the sorption experiments and absorbance values

Paris-Sud XI, Université de

370

Fractional advection-dispersion equations for modeling transport at the Earth surface  

E-Print Network [OSTI]

fractional ADEs arise as a result of power law particle residence time distributions and describe particle, whether involving shallow flows over soils, deeper river flows, or ocean currents. These and many other examples share three essential features. First, is the behavior of a well defined ensemble of particles

Meerschaert, Mark M.

371

Use of evaporative fractional crystallization in the pretreatment process of multi-salt single shell tank Hanford nuclear wastes.  

E-Print Network [OSTI]

??The purpose of the work described in this thesis was to explore the use of fractional crystallization as a technology that can be used to… (more)

Nassif, Laurent

2007-01-01T23:59:59.000Z

372

Stereotactic Fractionated Radiotherapy in the Treatment of Juxtapapillary Choroidal Melanoma: The McGill University Experience  

SciTech Connect (OSTI)

Purpose: To report our experience with linear accelerator-based stereotactic fractionated radiotherapy in the treatment of juxtapapillary choroidal melanoma. Methods and Materials: We performed a retrospective review of 50 consecutive patients diagnosed with juxtapapillary choroidal melanoma and treated with linear accelerator-based stereotactic fractionated radiotherapy between April 2003 and December 2009. Patients with small to medium sized lesions (Collaborative Ocular Melanoma Study classification) located within 2 mm of the optic disc were included. The prescribed radiation dose was 60 Gy in 10 fractions. The primary endpoints included local control, enucleation-free survival, and complication rates. Results: The median follow-up was 29 months (range, 1-77 months). There were 31 males and 29 females, with a median age of 69 years (range, 30-92 years). Eighty-four percent of the patients had medium sized lesions, and 16% of patients had small sized lesions. There were four cases of local progression (8%) and three enucleations (6%). Actuarial local control rates at 2 and 5 years were 93% and 86%, respectively. Actuarial enucleation-free survival rates at 2 and 5 years were 94% and 84%, respectively. Actuarial complication rates at 2 and 5 years were 33% and 88%, respectively, for radiation-induced retinopathy; 9.3% and 46.9%, respectively, for dry eye; 12% and 53%, respectively, for cataract; 30% and 90%, respectively, for visual loss [Snellen acuity (decimal equivalent), <0.1]; 11% and 54%, respectively, for optic neuropathy; and 18% and 38%, respectively, for neovascular glaucoma. Conclusions: Linear accelerator-based stereotactic fractionated radiotherapy using 60 Gy in 10 fractions is safe and has an acceptable toxicity profile. It has been shown to be an effective noninvasive treatment for juxtapapillary choroidal melanomas.

Al-Wassia, Rolina; Dal Pra, Alan; Shun, Kitty; Shaban, Ahmed [Department of Oncology, Division of Radiation Oncology, Montreal General Hospital, McGill University Health Centre, Montreal, Quebec (Canada); Corriveau, Christine [Department of Ophthalmology, Notre Dame Hospital, Centre Hospitalier de l'Universite de Montreal, Montreal, Quebec (Canada); Edelstein, Chaim; Deschenes, Jean [Department of Ophthalmology, McGill University Health Centre, Montreal, Quebec (Canada); Ruo, Russel; Patrocinio, Horacio [Department of Medical Physics, Montreal General Hospital, McGill University Health Centre, Montreal, Quebec (Canada); Cury, Fabio L.B. [Department of Oncology, Division of Radiation Oncology, Montreal General Hospital, McGill University Health Centre, Montreal, Quebec (Canada); DeBlois, Francois [Department of Medical Physics, Jewish General Hospital, McGill University, Montreal, Quebec (Canada); Shenouda, George, E-mail: george.shenouda@muhc.mcgill.ca [Department of Oncology, Division of Radiation Oncology, Montreal General Hospital, McGill University Health Centre, Montreal, Quebec (Canada)

2011-11-15T23:59:59.000Z

373

Thorium isotopes in colloidal fraction of water from San Marcos Dam, Chihuahua, Mexico  

Science Journals Connector (OSTI)

The main interest of this stiidy is to assess the contents and distribution of Th-series isotopes in colloidal fraction of surface water from San Marcos dam because the suspended particulate matter serves as transport medium for several pollutants. The aim of this work was to assess the distribution of thorium isotopes ( 232 Th and 230 Th ) contained in suspended matter. Samples were taken from three surface points along the San Marcos dam: water input midpoint and near to dam wall. In this last point a depth sampling was also carried out. Here three depth points were taken at 0.4 8 and 15 meters. To evaluate the thorium behavior in surface water from every water sample the colloidal fraction was separated between 1 and 0.1 ?m. Thorium isotopes concentraron in samples were obtained by alpha spectrometry. Activity concentrations obtained of 232 Th and 230 Th in surface points ranged from 0.3 to 0.5 Bq ? L-1 whereas in depth points ranged from 0.4 to 3.2 Bq ? L-1 respectively. The results show that 230 Th is in higher concentration than 232 Th in colloidal fraction. This can be attributed to a preference of these colloids to adsorb uranium. Thus the activity ratio 230 Th / 232 Th in colloidal fraction showed values from 2.3 to 10.2. In surface points along the dam 230 Th activity concentration decreases while 232 Th concentration remains constant. On the other hand activity concentrations of both isotopes showed a pointed out enhancement with depth. The results have shown a possible lixiviation of uranium from geological substrate into the surface water and an important fractionation of thorium isotopes which suggest that thorium is non-homogeneously distributed along San Marcos dam.

2013-01-01T23:59:59.000Z

374

Long-term outcomes of adjunctive complex fractionated electrogram ablation to pulmonary vein isolation as treatment for non-paroxysmal atrial fibrillation  

Science Journals Connector (OSTI)

The adjunctive ablation of areas of complex fractionated electrogram (CFE) to pulmonary vein isolation (PVI) is...

Alessandro De Bortoli; Ole-Jørgen Ohm…

2013-10-01T23:59:59.000Z

375

Recovering corn germ enriched in recombinant protein by wet-fractionation  

Science Journals Connector (OSTI)

Corn wet-fractionation processes (quick-germ fractionation and traditional wet milling) were evaluated as means of recovering fractions rich in recombinant collagen-related proteins that were targeted for expression in the germ (embryo) of transgenic corn. Transgenic corn lines accumulating a recombinant full-length human collagen type-I-alpha-1 (full-length rCI?1) or a 44-kDa rCI?1 fragment targeted for seed expression with an embryo-specific promoter were used. Factors to consider in efficient recovery processes are the distribution of the peptides among botanical parts and process recovery efficiency. Both recombinant proteins were distributed 62–64% in germ comprising about 8.6% of the dry grain mass; 34–38% in the endosperm comprising 84% of the dry grain mass; 1.7% in the pericarp comprising about 5% of the dry mass; and 1% in the tip-cap comprising 1.5–2% of the dry mass. The quick-germ method employed a short steeping period either in water or SO2–lactic acid solution followed by wet-milling degermination to recover a germ-rich fraction. Of the total recombinant protein expressed in germ, the quick-germ process recovered 40–43% of the total recombinant protein within 6–8% of the corn mass. The traditional corn wet-milling process produced higher purity germ but with lower recovery (24–26%) of the recombinant protein. The two quick-germ methods, using water alone or SO2–lactic acid steeping, did not substantially differ in rCI?1 recovery, and the quick-germ processes recovered germ with less leaching and proteolytic losses of the recombinant proteins than did traditional wet milling. Thus, grain fractionation enriched the recombinant proteins 6-fold higher than that of unfractionated kernels. Such enrichment may improve downstream processing efficiency and enable utilizing the protein-lean co-products to produce biofuels and biorenewable chemicals by fermenting the remaining starch-rich fractions.

Ilankovan Paraman; Steven R. Fox; Matthew T. Aspelund; Charles E. Glatz; Lawrence A. Johnson

2010-01-01T23:59:59.000Z

376

Extremely light Li in orogenic eclogites: The role of isotope fractionation during dehydration in subducted oceanic crust  

E-Print Network [OSTI]

,20] and boron [21,22], but the degree of Li isotope fractionation during dehydration reactions has yet to be determined. In this regard we measured Li isotopeExtremely light Li in orogenic eclogites: The role of isotope fractionation during dehydration

Rudnick, Roberta L.

377

Sulfur distribution in the oil fractions obtained by thermal cracking of Jordanian El-Lajjun oil Shale  

E-Print Network [OSTI]

by the thermal cracking process of the El-Lujjan oil shale showed that the yield of oil was around 12 wt of the boiling point for different distillate fractions. Sulfur in Jordanian oil shale was found to be mainly the dominant phases in these fractions. q 2005 Published by Elsevier Ltd. 1. Introduction Oil shale

Shawabkeh, Reyad A.

378

A mathematical model for simulation of a water table profile between two parallel subsurface drains using fractional derivatives  

Science Journals Connector (OSTI)

By considering the initial and boundary conditions corresponding to parallel subsurface drains, the linear form of a one-dimensional fractional Boussinesq equation was solved and an analytical mathematical model was developed to predict the water table ... Keywords: Bess algorithm, Fractional Boussinesq equation, Glover-Dumm's model, Heterogeneity, Subsurface drainage

Behrouz Mehdinejadiani; Abd Ali Naseri; Hossein Jafari; Afshin Ghanbarzadeh; Dumitru Baleanu

2013-09-01T23:59:59.000Z

379

Abstract -Other researchers have proposed that the brain parenchymal fraction (or brain atrophy) may be a good surrogate  

E-Print Network [OSTI]

Abstract - Other researchers have proposed that the brain parenchymal fraction (or brain atrophy. This paper considers various factors influencing the measure of the brain parenchymal fraction obtained from head MRI scans. An automatic segmentation method for the brain and for the cerebral spinal fluid

Orchard, Jeffery J.

380

Method of producing a colloidal fuel from coal and a heavy petroleum fraction  

DOE Patents [OSTI]

A method is provided for combining coal as a colloidal suspension within a heavy petroleum fraction. The coal is broken to a medium particle size and is formed into a slurry with a heavy petroleum fraction such as a decanted oil having a boiling point of about 300.degree.-550.degree. C. The slurry is heated to a temperature of 400.degree.-500.degree. C. for a limited time of only about 1-5 minutes before cooling to a temperature of less than 300.degree. C. During this limited contact time at elevated temperature the slurry can be contacted with hydrogen gas to promote conversion. The liquid phase containing dispersed coal solids is filtered from the residual solids and recovered for use as a fuel or feed stock for other processes. The residual solids containing some carbonaceous material are further processed to provide hydrogen gas and heat for use as required in this process.

Longanbach, James R. (Columbus, OH)

1983-08-09T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" 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.
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381

How surface complexes impact boron isotope fractionation: Evidence from Fe and Mn oxides sorption experiments  

Science Journals Connector (OSTI)

Although the pH-dependence of boron isotope fractionation between solution and precipitating minerals has been widely used in Earth Sciences, especially for reconstructing ancient seawater pH, the mechanisms by which boron adsorbs on solids or coprecipitates in minerals are still poorly known. Here we have investigated boron isotopic fractionation during its adsorption on goethite (?-FeOOH) and birnessite (K0.1MnO2.2,0.9H2O) as a function of solution pH at T = 25 °C and I = 0.1 M. Maximum partition coefficients (Kd) between adsorbed and aqueous boron, equal to 39 and 34 for goethite and birnessite, respectively, are observed at pH = 8–9. B adsorption at the surface of goethite induces its strong pH-dependent isotopic fractionation ranging from ? = ? 40‰ (10B enrichment on goethite) at pH  10. During adsorption on birnessite at acid and neutral pH, boron isotopic fractionation is lower than during its sorption on goethite (? = ? 15‰), decreases (? increases) with increasing pH above pH = 8, and reverses at pH > 9: 11B enrichment (+ 23‰ at pH = 10.8) is observed at birnessite surface. Based on combined infrared (DRIFT) spectroscopic analysis and modeling of B speciation at oxides–solution interfaces, the observed isotopic fractionations can be rationalized by the formation of trigonal and tetrahedral boron inner-sphere complexes on goethite surface, and tetrahedral inner-sphere and trigonal outer-sphere and inner-sphere complexes on birnessite surface. B isotopic fractionation is strongly dependent on the structure of surface complexes formed: the high steric strain induced by the formation of trigonal boron bidendate binuclear complexes at goethite surface leads to a much higher isotopic fractionation (isotopically lighter sorbed boron) than that following the formation of tetrahedral bidendate binuclear complexes. Conversely, the formation at birnessite surface of trigonal complexes, having almost the same isotopic composition than aqueous boric acid, accounts for the heavier isotopic composition of birnessite than goethite boron, both at acid and alkaline pH. These results show that, in nature, 11B enrichment is expected in waters in equilibrium with iron or manganese oxides and that this enrichment is a function of pH that changes boron speciation in solution and at solid surfaces. This is typically the case for soil solution in Fe- and Mn-rich environments and in seawater. In addition, the markedly different isotopic fractionation factor, at the same pH, of boron sorbed on goethite and birnessite (at pH = 8.2, ? is equal to 0.967 and 0.986 for goethite and birnessite, respectively) may be used to determine past ocean pH values without requiring knowledge of past isotopic composition.

Emmanuel Lemarchand; Jacques Schott; Jérôme Gaillardet

2007-01-01T23:59:59.000Z

382

Minimum unit for the fractional statistics of anyons and its application  

SciTech Connect (OSTI)

Although Han et al.[Phys. Rev. Lett. 98, 150404 (2007)] proposed a quantum circuit with six qubits to demonstrate the basic braiding statistics of anyons, we have found that a four-qubit system is enough for realizing such a process. We call it the minimum unit for the fractional statistics of anyons. With some special order, the minimum unit can be used to construct two kinds of fractional charge excitation n/(n+1)[or (n+1)/n] and (n{sup 2}-kn+6n+2)/(n{sup 2}-kn+5n+4)[or (n{sup 2}-kn+2n+k+1)/3(n{sup 2}-kn+5n+4)], where n,k are positive integers and k{<=}n. This minimum unit can be realized by a photonic quantum simulator or by electrons in an optical lattice or quantum dot array. Its use will have some advantages in metrology.

Xi Xiaoqiang [School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710061 (China); School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430 (United States); Hu Mingliang [School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710061 (China)

2010-08-15T23:59:59.000Z

383

Method of increasing anhydrosugars, pyroligneous fractions and esterified bio-oil  

SciTech Connect (OSTI)

The device and method are provided to increase anhydrosugars yield during pyrolysis of biomass. This increase is achieved by injection of a liquid or gas into the vapor stream of any pyrolysis reactor prior to the reactor condensers. A second feature of our technology is the utilization of sonication, microwave excitation, or shear mixing of the biomass to increase the acid catalyst rate for demineralization or removal of hemicellulose prior to pyrolysis. The increased reactivity of these treatments reduces reaction time as well as the required amount of catalyst to less than half of that otherwise required. A fractional condensation system employed by our pyrolysis reactor is another feature of our technology. This system condenses bio-oil pyrolysis vapors to various desired fractions by differential temperature manipulation of individual condensers comprising a condenser chain.

Steele, Philip H; Yu, Fei; Li, Qi; Mitchell, Brian

2014-12-30T23:59:59.000Z

384

First Measurement of the Branching Fraction of the Decay $\\psi(2S) \\to \\tau\\tau$  

E-Print Network [OSTI]

The branching fraction of the psi(2S) decay into tau pair has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is $B_{\\tau\\tau}=(2.71\\pm 0.43 \\pm 0.55) \\times 10^{-3}$, where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e+e- and mu+mu of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance the total width of the psi(2S) is determined to be $(252 \\pm 37)$ keV.

Bai, J Z; Bian, J G; Blum, I K; Chen, G P; Chen, H F; Chen, J; Chen Jia Chao; Chen, Y; Chen, Y B; Chen, Y Q; Cheng Bao Sen; Cui, X Z; Ding, H L; Dong, L Y; Du, Z Z; Dunwoodie, W M; Gao, C S; Gao, M L; Gao, S Q; Gratton, P; Gu, J H; Gu, S D; Gu, W X; Gu, Y F; Guo, Z J; Guo, Y N; Han, S W; Han, Y; Harris, F A; He, J; He, J T; He, K L; He, M; Heng, Y K; Hitlin, D G; Hu, G Y; Hu, H M; Hu, J L; Hu, Q H; Hu, T; Hu Xiao Qing; Huang, G S; Huang, Y Z; Izen, J M; Jiang, C H; Jin, Y; Jones, B D; Ju, X; Ke, Z J; Kelsey, M H; Kim, B K; Kong, D; Lai, Y F; Lang, P F; Lankford, A J; Li, C G; Li, D; Li, H B; Li, J; Li, J C; Li, P Q; Li, R B; Li, W; Li, W G; Li, X H; Li Xiao Nan; Liu, H M; Liu, J; Liu, R G; Liu, Y; Lou, X C; Lowery, B; Lu, F; Lu, J G; Luo, X L; Ma, E C; Ma, J M; Malchow, R; Mao, H S; Mao, Z P; Meng, X C; Nie, J; Olsen, S L; Oyang, J Y T; Paluselli, D; Pan, L J; Panetta, J; Porter, F; Qi, N D; Qi, X R; Qian, C D; Qiu, J F; Qu, Y H; Que, Y K; Rong, G; Schernau, M; Shao, Y Y; Shen, B W; Shen, D L; Shen, H; Shen, X Y; Sheng, H Y; Shi, H Z; Song, X F; Standifird, J; Sun, F; Sun, H S; Sun, Y; Sun, Y Z; Tang, S Q; Toki, W; Tong, G L; Varner, G S; Wang, F; Wang, L S; Wang, L Z; Wang, M; Wang, P; Wang, P L; Wang, S M; Wang, T J; Wang, Y Y; Weaver, M; Wei, C L; Wu, J M; Wu, N; Wu, Y G; Xi, D M; Xia, X M; Xie, P P; Xie, Y; Xie, Y H; Xu, G F; Xue, S T; Yan, J; Yan, W G; Yang, C M; Yang, C Y; Yang, H X; Yang, J; Yang, W; Yang, X F; Ye, M H; Ye Shu Wei; Ye, Y X; Yu, C S; Yu, C X; Yu, G W; Yu Yu Hei; Yu, Z Q; Yuan, C Z; Yuan, Y; Zhang Bing Yun; Zhang, C; Zhang, C C; Zhang, D H; Zhang, H L; Zhang, J; Zhang, J W; Zhang, L; Zhang, L S; Zhang, P; Zhang, Q J; Zhang, S Q; Zhang, X Y; Zhang, Y Y; Zhao, D X; Zhao, H W; Zhao Jia Wei; Zhao, M; Zhao Wei Ren; Zhao, Z G; Zheng Jian Ping; Zheng Lin Sheng; Zheng Zhi Peng; Zhou, B Q; Zhou, G P; Zhou, H S; Zhou, L; Zhu, K J; Zhu, Q M; Zhu, Y C; Zhu, Y S; Zhuang, B A

2002-01-01T23:59:59.000Z

385

The Fractionation of Loblolly Pine Woodchips Into Pulp For Making Paper Products  

SciTech Connect (OSTI)

The overall goal of the project was to test the PureVision biomass fractionation technology for making pulp from loblolly pine. A specific goal was to produce a pulp product that is comparable to pulp produced from the kraft process, while reducing the environmental effects of the kraft process, known to be a highly pollutant process. The overall goal of the project was met by using the biomass fractionation concept for making pulp product. This proof-of-concept study, done with Southern pine pinchips as feedstock, evaluated NaOH concentration and residence time as variables in single-stage cocurrent pulping process. It can be concluded that 1% NaOH is adequate for effective delignification using the PureVision process; this is about ? of that used in the kraft process. Also, the PureVision process does not use sulfur-based chemicals such as N2S and hence, is environmentally more benign.

Kiran Kadam, PhD

2006-11-30T23:59:59.000Z

386

Validation of MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites  

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

MODIS-Retrieved Cloud Fractions Using MODIS-Retrieved Cloud Fractions Using Whole Sky Imager Measurements at the Three ARM Sites Z. Li, M. C. Cribb, and F.-L. Chang Earth System Science Interdisciplinary Center University of Maryland College Park, Maryland A. P. Trishchenko Canada Centre for Remote Sensing Ottawa, Ontario, Canada Introduction Given the importance of clouds in modulating the surface energy budget, it is critical to obtain accurate estimates of their fractional amount in the atmospheric column for use in modeling studies. Satellite remote sensing of cloud properties such as cloud amount has the advantage of providing global coverage on a regular basis. Ground-based surveys of cloud fraction offer a practical database for use in determining the accuracy of these remotely sensed estimates of cloud fraction on a regional scale.

387

Combined Dilute Acid and Solvent Based Pretreatment of Agricultural Wastes for Efficient Lignocellulosic Fractionation and Biofuels Production  

SciTech Connect (OSTI)

A true biorefinery for processing lignocellulosic biomass should achieve maximum utilization of all major constituents (cellulose, hemicellulose, & lignin) within the feedstock. In this work a combined pretreatment process of dilute acid (DA) and N-methyl morpholine N-oxide (NMMO) is described that allows for both fractionation and subsequent complete hydrolysis of the feedstocks (corn stover and sugarcane bagasse). During this multi-step processing, the dilute acid pretreatment solubilizes the majority (>90%) of the hemicellulosic fraction, while the NMMO treatment yields a cellulosic fraction that is completely digestible within 48 hours at low enzyme loadings. With both the cellulosic and hemicellulosic fractions being converted into separate, dissolved sugar fractions, the remaining portion is nearly pure lignin. When used independently, DA and NMMO pretreatments are only able to achieve ~80% and ~45% cellulosic conversion, respectively. Mass balance calculations along with experimental results are used to illustrate the feasibility of separation and recycling of NMMO.

Brodeur, G.; Ramakrishnan, S.; Wilson, C.; Telotte, J.; Collier, J.; Stickel, J.

2013-01-01T23:59:59.000Z

388

COMPACT LINEAR COMBINATIONS OF COMPOSITION OPERATORS INDUCED BY LINEAR FRACTIONAL MAPS  

E-Print Network [OSTI]

will use the notation D and T in place of B1 and S1, respectively. The main objects of our study here fractional map; Compact op- erator; Hardy space; Weighted Bergman space. B. R. Choe was supported by NRF(2013R1A1A2004736) of Korea, H. Koo was supported by NRF(2012R1A1A2000705) of Korea and NSFC(11271293

Choe, Boo Rim

389

Right ventricular ejection fraction from equilibrium and first pass scintigraphic cardiac images  

E-Print Network [OSTI]

Radioactive 2 x 10 years Fig. 6. Generation and transition of Tc 11 2. Radiopharmaceuticals Radiopharmaceuticals or radioactive tracers generally consist of a radionuclide emit- ting 7-rays. They need to allow maximum information extraction... the contraction phase, is an important indicator of ventricular func- tion. Equilibrium images, in which the radiopharmaceutical is uniformly distributed throughout the blood pool, are routinely used to compute the left ventricular ejec- tion fraction...

Nakamura, Eiji

1993-01-01T23:59:59.000Z

390

Kinetics of Mixed Ni-Al Precipitate Formation on a Soil Clay Fraction  

E-Print Network [OSTI]

Kinetics of Mixed Ni-Al Precipitate Formation on a Soil Clay Fraction D A R R Y L R . R O B E R Management Laboratory, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland The kinetics of mixed Ni-Al Ni- Al LDH formation. The initial Ni concentration was 3 mM with a solid/solution ratio of 10 g L-1

Sparks, Donald L.

391

Hypofractionated Radiation Therapy (66 Gy in 22 Fractions at 3 Gy per Fraction) for Favorable-Risk Prostate Cancer: Long-term Outcomes  

SciTech Connect (OSTI)

Purpose: To report long-term outcomes of low- and intermediate-risk prostate cancer patients treated with high-dose hypofractionated radiation therapy (HypoRT). Methods and Materials: Patients with low- and intermediate-risk prostate cancer were treated using 3-dimensional conformal radiation therapy to a dose of 66 Gy in 22 daily fractions of 3 Gy without hormonal therapy. A uniform 7-mm margin was created around the prostate for the planning target volume, and treatment was prescribed to the isocenter. Treatment was delivered using daily ultrasound image-guided radiation therapy. Common Terminology Criteria for Adverse Events, version 3.0, was used to prospectively score toxicity. Biochemical failure was defined as the nadir prostate-specific antigen level plus 2 ng/mL. Results: A total of 129 patients were treated between November 2002 and December 2005. With a median follow-up of 90 months, the 5- and 8-year actuarial biochemical control rates were 97% and 92%, respectively. The 5- and 8-year actuarial overall survival rates were 92% and 88%, respectively. Only 1 patient died from prostate cancer at 92 months after treatment, giving an 8-year actuarial cancer-specific survival of 98%. Radiation therapy was well tolerated, with 57% of patients not experiencing any acute gastrointestinal (GI) or genitourinary (GU) toxicity. For late toxicity, the worst grade ?2 rate for GI and GU toxicity was 27% and 33%, respectively. There was no grade >3 toxicity. At last follow-up, the rate of grade ?2 for both GI and GU toxicity was only 1.5%. Conclusions: Hypofractionation with 66 Gy in 22 fractions prescribed to the isocenter using 3-dimensional conformal radiation therapy produces excellent biochemical control rates, with moderate toxicity. However, this regimen cannot be extrapolated to the intensity modulated radiation therapy technique.

Patel, Nita [Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec (Canada)] [Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec (Canada); Faria, Sergio, E-mail: sergio.faria@muhc.mcgill.ca [Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec (Canada)] [Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec (Canada); Cury, Fabio; David, Marc; Duclos, Marie; Shenouda, George; Ruo, Russell; Souhami, Luis [Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec (Canada)] [Department of Radiation Oncology, McGill University Health Centre, Montreal, Quebec (Canada)

2013-07-01T23:59:59.000Z

392

Interacting and fractional topological insulators via the Z2 chiral anomaly  

Science Journals Connector (OSTI)

Recently, it was shown that the topological properties of 2D and 3D topological insulators are captured by a Z2 chiral anomaly in the boundary field theory. It remained, however, unclear whether the anomaly survives electron-electron interactions. We show that this is, indeed, the case, thereby providing an alternative formalism for treating topological insulators in the interacting regime. We apply this formalism to fractional topological insulators (FTI) via projective/parton constructions and use it to test the robustness of all fractional topological insulators that can be described in this way. The stability criterion we develop is easy to check and based on the pair switching behavior of the noninteracting partons. In particular, we find that FTIs based on bosonic Laughlin states and the M=0 bosonic Read-Rezayi states are fragile and may have a completely gapped and nondegenerate edge spectrum in each topological sector. In contrast, FTIs based on fermionic Zk Read-Rezayi states with M=1 and odd k and the bosonic 3D topological insulator with a ?/4 fractional ? term are topologically stable.

Maciej Koch-Janusz and Zohar Ringel

2014-02-27T23:59:59.000Z

393

Interpretation of frequency modulation atomic force microscopy in terms of fractional calculus  

Science Journals Connector (OSTI)

It is widely recognized that small amplitude frequency modulation atomic force microscopy probes the derivative of the interaction force between tip and sample. For large amplitudes, however, such a physical connection is currently lacking, although it has been observed that the frequency shift presents a quantity intermediate to the interaction force and energy for certain force laws. Here we prove that these observations are a universal property of large amplitude frequency modulation atomic force microscopy, by establishing that the frequency shift is proportional to the half-fractional integral of the force, regardless of the force law. This finding indicates that frequency modulation atomic force microscopy can be interpreted as a fractional differential operator, where the order of the derivative?integral is dictated by the oscillation amplitude. We also establish that the measured frequency shift varies systematically from a probe of the force gradient for small oscillation amplitudes, through to the measurement of a quantity intermediate to the force and energy (the half-fractional integral of the force) for large oscillation amplitudes. This has significant implications to measurement sensitivity, since integrating the force will smooth its behavior, while differentiating it will enhance variations. This highlights the importance in choice of oscillation amplitude when wishing to optimize the sensitivity of force spectroscopy measurements to short-range interactions and consequently imaging with the highest possible resolution.

John E. Sader and Suzanne P. Jarvis

2004-07-27T23:59:59.000Z

394

In situ determination of rheological properties and void fraction: Hanford Waste Tank 241-SY-103  

SciTech Connect (OSTI)

This report presents the results of the operation of the void fraction instrument (VFI) and ball rheometer in Hanford Tank 241-SY-103. The two instruments were deployed through risers 17C and 22A in July and August 1995 to gather data on the gas content and rheology of the waste. The results indicate that the nonconvective sludge layer contains up to 12% void and an apparent viscosity of 104 to 105 cP with a yield strength less than 210 Pa. The convective layer measured zero void and had no measurable yield strength. Its average viscosity was about 45 cP, and the density was less than 1.5 g/cc. The average void fraction was 0.047 {plus_minus} 0.015 at riser 17C and 0.091 {plus_minus} 0.015 at riser 22A. The stored gas volume based on these void fraction measurements is 213 {plus_minus} 42 M{sup 3} at 1 atmosphere.

Shepard, C.L.; Stewart, C.W.; Alzheimer, J.M.; Terrones, G.; Chen, G. [Pacific Northwest Lab., Richland, WA (United States); Wilkins, N.E. [Westinghouse Hanford Co., Richland, WA (United States)

1995-11-01T23:59:59.000Z

395

Impact of vegetation fraction from Indian geostationary satellite on short-range weather forecast  

Science Journals Connector (OSTI)

Indian economy is largely depending upon the agricultural productivity and thus influences the trade among the SAARC countries. High-resolution and good-quality regional weather forecasts are necessary for planners, resource managers, insurers and national agro-advisory services. In this study, high resolution updated land-surface state in terms of vegetation fraction (VF) from operational vegetation index products of Indian geostationary satellite (INSAT 3A) sensor (CCD) was utilized in numerical weather prediction (NWP) model (e.g. WRF) to investigate its impact on short-range weather forecast over the control run. Results showed that the updated vegetation fraction from INSAT 3A CCD improved the low-level 24 h temperature (?18%) and moisture (?10%) forecast in comparison to control run. The 24 h rainfall forecast was also improved (more than 5%) over central and southern India with the use of updated vegetation fraction compared to control experiment. INSAT 3A VF based experiment also showed a net improvement of 27% in surface sensible heat fluxes from WRF in comparison to control experiment when both were compared with area-averaged measurements from Large Aperture Scintillometer (LAS). This triggers the need of more and more use of realistic and updated land surface states through satellite remote sensing data as well as in situ micrometeorological measurements to improve the forecast quality, skill and consistency.

Prashant Kumar; Bimal K. Bhattacharya; P.K. Pal

2013-01-01T23:59:59.000Z

396

Catalytic two-stage coal hydrogenation process using extinction recycle of heavy liquid fraction  

DOE Patents [OSTI]

A process is described for catalytic two-stage hydrogenation and liquefaction of coal with selective extinction recycle of all heavy liquid fractions boiling above a distillation cut point of about 600--750 F to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal feed is slurried with a process-derived liquid solvent normally boiling above about 650 F and fed into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils. The first stage reactor is maintained at 710--800 F temperature, 1,000--4,000 psig hydrogen partial pressure, and 10-90 lb/hr per ft[sup 3] catalyst space velocity. Partially hydrogenated material withdrawn from the first stage reaction zone is passed directly to the second stage catalytic reaction zone maintained at 760--860 F temperature for further hydrogenation and hydroconversion reactions. A 600--750 F[sup +] fraction containing 0--20 W % unreacted coal and ash solids is recycled to the coal slurrying step. If desired, the cut point lower boiling fraction can be further catalytically hydrotreated. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, to provide significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of hydrocarbon gases, and no net production of undesirable heavy oils and residuum materials. 2 figs.

MacArthur, J.B.; Comolli, A.G.; McLean, J.B.

1989-10-17T23:59:59.000Z

397

Fractional distillation as a strategy for reducing the genotoxic potential of SRC-II coal liquids: a status report  

SciTech Connect (OSTI)

This report presents results of studies on the effects of fractional distillation on the genotoxic potential of Solvent Refined Coal (SRC-II) liquids. SRC-II source materials and distilled liquids were provided by Pittsburg and Midway Coal Mining Co. Fractional distillations were conducted on products from the P-99 process development unit operating under conditions approximating those anticipated at the SRC-II demonstration facility. Distillation cuts were subjected to chemical fractionation, in vitro bioassay and initial chemical analysis. Findings are discussed as they relate to the temperature at which various distillate cuts were produced. This document is the first of two status reports scheduled for 1981 describing these studies.

Pelroy, R.A.; Wilson, B.W.

1981-09-01T23:59:59.000Z

398

Low-Cost Single-Phase Powered Induction Machine Drive for Residential Applications  

E-Print Network [OSTI]

, and lifetime. Keywords-induction motor; harmonic elimination; power factor correction; efficiency; low cost of the motors are less than 1 hp in size, and account for approximately 10% of the electricity consumed by the electric motor population [1]. These fractional horsepower motors are primarily single- phase induction

Chapman, Patrick

399

Cathode Performance as a Function of Inactive Materials and Void Fractions  

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

Cathode Performance as a Function of Inactive Materials and Void Fractions Cathode Performance as a Function of Inactive Materials and Void Fractions Title Cathode Performance as a Function of Inactive Materials and Void Fractions Publication Type Journal Article Year of Publication 2010 Authors Zheng, Honghe, Gao Liu, Xiangyun Song, Paul L. Ridgway, Shidi Xun, and Vincent S. Battaglia Journal Journal of Electrochemical Society Abstract Li[Ni1/3Co1/3Mn1/3]O2 -based laminates of approximately the same loading and of varying levels of poly(vinylidene fluoride) (PVDF) binder and acetylene black (ratio held constant) were fabricated and calendered to different porosities, with the objective to investigate performance on a volume basis. The electronic conductivity of the laminates depends strongly on the inactive material content but not significantly on porosity. Electrochemical impedance spectroscopy studies found that charge-transfer resistance with calendering varied greatly with inactive material content. When the electrode contains low levels of inactive material (2% PVDF and 1.6% carbon), calendering significantly reduced the bulk resistance of the electrode. With high levels of inactive material (8% PVDF and 6.4% carbon), charge-transfer resistance increased with increased calendering. Above a certain level, depending on the overall composition, the inactive material reduces ionic transport to the active material surface. For a plug-in hybrid electric vehicle required to go 40 miles at an average rate of 20 miles/h with a 38 kW 10 s power-pulse capability, the cell chemistry studied is energy-limited. Therefore, based on the results of this study, the cathode should be compressed to 10% porosity with a minimal amount of inactive material

400

Space group symmetry fractionalization in a family of exactly solvable models with Z2 topological order  

E-Print Network [OSTI]

We study square lattice space group symmetry fractionalization in a family of exactly solvable models with $\\mathbb{Z}_2$ topological order in two dimensions. In particular, we have obtained a complete understanding of which distinct types of symmetry fractionalization (symmetry classes) can be realized within this class of models, which are generalizations of Kitaev's $\\mathbb{Z}_2$ toric code to arbitrary lattices. This question is motivated by earlier work of A. M. Essin and one of us (M. H.), where the idea of symmetry classification was laid out, and which, for square lattice symmetry, produces 2080 symmetry classes consistent with the fusion rules of $\\mathbb{Z}_2$ topological order. This approach does not produce a physical model for each symmetry class, and indeed there are reasons to believe that some symmetry classes may not be realizable in strictly two-dimensional systems, thus raising the question of which classes are in fact possible. While our understanding is limited to a restricted class of models, it is complete in the sense that for each of the 2080 possible symmetry classes, we either prove rigorously that the class cannot be realized in our family of models, or we give an explicit model realizing the class. We thus find that exactly 487 symmetry classes are realized in the family of models considered. With a more restrictive type of symmetry action, where space group operations act trivially in the internal Hilbert space of each spin degree of freedom, we find that exactly 82 symmetry classes are realized. In addition, we present a single model that realizes all $2^6 = 64$ types of symmetry fractionalization allowed for a single anyon species ($\\mathbb{Z}_2$ charge excitation), as the parameters in the Hamiltonian are varied. The paper concludes with a summary and a discussion of two results pertaining to more general bosonic models.

Hao Song; Michael Hermele

2014-09-04T23:59:59.000Z

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401

Nuclear spin-lattice relaxation from fractional wobbling in a cone  

E-Print Network [OSTI]

We consider nuclear spin-lattice relaxation rate resulted from a fractional diffusion equation for anomalous rotational wobbling in a cone. The mechanism of relaxation is assumed to be due to dipole-dipole interaction of nuclear spins and is treated within the framework of the standard Bloemberger, Purcell, Pound - Solomon scheme. We consider the general case of arbitrary orientation of the cone axis relative the magnetic field. The BPP-Solomon scheme is shown to remain valid for systems with the distribution of the cone axes depending only on the tilt relative the magnetic field but otherwise being isotropic. We consider the case of random isotropic orientation of cone axes relative the magnetic field taking place in powders. Also we consider the case of their predominant orientation along or opposite the magnetic field and that of their predominant orientation transverse to the magnetic field which may be relevant for, e.g., liquid crystals. Besides we treat in details the model case of the cone axis directed along the magnetic field. The latter provides direct comparison of the limiting case of our formulas with the textbook formulas for ordinary isotropic rotational diffusion. We show that the present model enables one to obtain naturally the well known power law for Larmor frequency dependence of the spin-lattice relaxation rate. The latter is observed in some complex systems. From this law the dependence of the fractional diffusion coefficient on the fractional index is obtained to have a rather simple functional form. The dependence of the spin-lattice relaxation rate on the cone half-width for the case of ordinary rotational diffusion yields results similar to those predicted by the model-free approach.

A. E. Sitnitsky

2011-01-13T23:59:59.000Z

402

Gemcitabine Chemotherapy and Single-Fraction Stereotactic Body Radiotherapy for Locally Advanced Pancreatic Cancer  

SciTech Connect (OSTI)

Purpose: Fractionated radiotherapy and chemotherapy for locally advanced pancreatic cancer achieves only modest local control. This prospective trial evaluated the efficacy of a single fraction of 25 Gy stereotactic body radiotherapy (SBRT) delivered between Cycle 1 and 2 of gemcitabine chemotherapy. Methods and Materials: A total of 16 patients with locally advanced, nonmetastatic, pancreatic adenocarcinoma received gemcitabine with SBRT delivered 2 weeks after completion of the first cycle. Gemcitabine was resumed 2 weeks after SBRT and was continued until progression or dose-limiting toxicity. The gross tumor volume, with a 2-3-mm margin, was treated in a single 25-Gy fraction by Cyberknife. Patients were evaluated at 4-6 weeks, 10-12 weeks, and every 3 months after SBRT. Results: All 16 patients completed SBRT. A median of four cycles (range one to nine) of chemotherapy was delivered. Three patients (19%) developed local disease progression at 14, 16, and 21 months after SBRT. The median survival was 11.4 months, with 50% of patients alive at 1 year. Patients with normal carbohydrate antigen (CA)19-9 levels either at diagnosis or after Cyberknife SBRT had longer survival (p <0.01). Acute gastrointestinal toxicity was mild, with 2 cases of Grade 2 (13%) and 1 of Grade 3 (6%) toxicity. Late gastrointestinal toxicity was more common, with five ulcers (Grade 2), one duodenal stenosis (Grade 3), and one duodenal perforation (Grade 4). A trend toward increased duodenal volumes radiated was observed in those experiencing late effects (p = 0.13). Conclusion: SBRT with gemcitabine resulted in comparable survival to conventional chemoradiotherapy and good local control. However, the rate of duodenal ulcer development was significant.

Schellenberg, Devin [Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA (United States); Goodman, Karyn A. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Lee, Florence; Chang, Stephanie [Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA (United States); Kuo, Timothy [Lake Norman Hematology/Oncology, Mooresville, NC (United States); Ford, James M.; Fisher, George A. [Department of Medicine (Division of Medical Oncology), Stanford University School of Medicine, Stanford, CA (United States); Quon, Andrew; Desser, Terry S. [Department of Radiology, Stanford University School of Medicine, Stanford, CA (United States); Norton, Jeffrey; Greco, Ralph; Yang, George P. [Department of Surgery (Division of General Surgery), Stanford University School of Medicine, Stanford, CA (United States); Koong, Albert C. [Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA (United States)], E-mail: akoong@stanford.edu

2008-11-01T23:59:59.000Z

403

Fractionated Stereotactic Radiosurgery for Reirradiation of Head-and-Neck Cancer  

SciTech Connect (OSTI)

Purpose: Stereotactic radiosurgery (SRS) is an appealing treatment option after previous radiotherapy because of its precision, conformality, and reduced treatment duration. We report our experience with reirradiation using fractionated SRS for head-and-neck cancer. Methods and Materials: From 2002 to 2008, 65 patients received SRS to the oropharynx (n = 13), hypopharynx (n = 8), nasopharynx (n = 7), paranasal sinus (n = 7), neck (n = 7), and other sites (n = 23). Thirty-eight patients were treated definitively and 27 patients with metastatic disease and/or untreated local disease were treated palliatively. Nine patients underwent complete macroscopic resection before SRS. Thirty-three patients received concurrent chemoradiation. The median initial radiation dose was 67 Gy, and the median reirradiation SRS dose was 30 Gy (21-35 Gy) in 2-5 fractions. Results: Median follow-up for surviving patients was 16 months. Fifty-six patients were evaluable for response: 30 (54%) had complete, 15 (27%) had partial, and 11 (20%) had no response. Median overall survival (OS) for all patients was 12 months. For definitively treated patients, the 2-year OS and locoregional control (LRC) rates were 41% and 30%, respectively. Multivariate analysis demonstrated that higher total dose, surgical resection, and nasopharynx site were significantly associated with improved LRC; surgical resection and nonsquamous histology were associated with improved OS. Seven patients (11%) experienced severe reirradiation-related toxicity, including one treatment-attributed death. Conclusion: SRS reirradiation for head-and-neck cancer is feasible. This study demonstrates encouraging response rates with acceptable toxicity. Fractionated SRS reirradiation with concurrent chemotherapy in select patients warrants further study.

Unger, Keith R., E-mail: kxu2@gunet.georgetown.ed [Department of Radiation Medicine, Georgetown University Hospital, Washington, D.C (United States); Lominska, Christopher E. [Department of Radiation Medicine, Georgetown University Hospital, Washington, D.C (United States); Deeken, John F. [Department of Hematology/Oncology, Georgetown University Hospital, Washington, D.C (United States)

2010-08-01T23:59:59.000Z

404

A 113 L/min ambient aerosol sampler for collection of thoracic and respirable fractions  

E-Print Network [OSTI]

Figure IO to show a comparison w1th the ISO 20 100 80 I- Z LLI 60 LLI Q. 0 ~ 40 IX I- LLI z LIJ 0 20 I 2 3 4 5 7 10 AERODYNAMIC PARTICLE DIAMETER, pm Figure 9. Penetration of rronodisperse aerosols through the RSP fractionator. Flow rate... yielded penetration values w1thin one percent of the values observed for the first set of tests. The experimentally observed relationship between cutoo1nt s1ze and flow rate, Figure 11, is one wh1ch provides- reason to question a commonly-used theory...

Rue, Clayton Matthew

2012-06-07T23:59:59.000Z

405

Fractionalization in Josephson junction arrays hinged by quantum spin Hall edges  

SciTech Connect (OSTI)

We study a superconductor-ferromagnet-superconductor (SC-FM-SC) Josephson array deposited on top of a two-dimensional quantum spin Hall insulator. The Majorana bound state at the interface between SC and FM leads to charge-e tunneling between neighboring superconductor islands, in addition to the usual charge-2e Cooper pair tunneling. Moreover, because Majorana fermions encode the information of charge number parity, an exact Z{sub 2} gauge structure naturally emerges and leads to many new phases, including a deconfined phase where electrons fractionalize into charge-e bosons and topological defects. A deconfined SC-insulator transition has also been found.

Xu Cenke; Fu Liang [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States)

2010-04-01T23:59:59.000Z

406

A conformal field theory description of magnetic flux fractionalization in Josephson junction ladders  

E-Print Network [OSTI]

We show how the recently proposed effective theory for a Quantum Hall system at "paired states" filling v=1 (Mod. Phys. Lett. A 15 (2000) 1679; Nucl. Phys. B641 (2002) 547), the twisted model (TM), well adapts to describe the phenomenology of Josephson Junction ladders (JJL) in the presence of defects. In particular it is shown how naturally the phenomenon of flux fractionalization takes place in such a description and its relation with the discrete symmetries present in the TM. Furthermore we focus on closed geometries, which enable us to analyze the topological properties of the ground state of the system in relation to the presence of half flux quanta.

G. Cristofano; V. Marotta; A. Naddeo; G. Niccoli

2005-09-30T23:59:59.000Z

407

Foundation of Fractional Langevin Equation: Harmonization of a Many Body Problem  

E-Print Network [OSTI]

In this study we derive a single-particle equation of motion, from first-principles, starting out with a microscopic description of a tracer particle in a one-dimensional many-particle system with a general two-body interaction potential. Using a new harmonization technique, we show that the resulting dynamical equation belongs to the class of fractional Langevin equations, a stochastic framework which has been proposed in a large body of works as a means of describing anomalous dynamics. Our work sheds light on the fundamental assumptions of these phenomenological models.

Ludvig Lizana; Tobias Ambjornsson; Alessandro Taloni; Eli Barkai; Michael A. Lomholt

2010-04-28T23:59:59.000Z

408

Reduction of chemical networks. II. Analysis of the fractional ionisation in protoplanetary discs  

E-Print Network [OSTI]

(abridged) We analyse the evolution of the fractional ionisation in a steady-state protoplanetary disc with a vertical temperature gradient and with gas-grain chemistry including surface reactions. The ionisation due to stellar X-rays, stellar and interstellar UV radiation, cosmic rays and radionuclide decay is taken into account. Using our reduction schemes as a tool for the analysis, we isolate small sets of chemical reactions that reproduce the evolution of the ionisation degree at representative disc locations with an accuracy of 50%-100%. Column densities of key molecules are calculated and compared to the results of other recent studies and observational data.

D. Semenov; D. Wiebe; Th. Henning

2004-03-23T23:59:59.000Z

409

Adenovirus DNA Replication I. Requirement for Protein Synthesis and Isolation of Nuclear Membrane Fractions Containing Newly Synthesized Viral DNA and Proteins  

Science Journals Connector (OSTI)

...Musashimurayama, Tokyo 190-12, Japan. Nuclear membrane fractions were...000 rpm. To isolate nuclear membrane fractions by...gradient procedure, the nuclear suspension in TKM buffer...sonically disrupted at full power in a Raytheon DF-101...

Tadashi Yamashita; Maurice Green

1974-09-01T23:59:59.000Z

410

ISOTOPE FRACTIONATION Isotopes are atoms whose nuclei contain the same number of protons but a different number of neutrons. The  

E-Print Network [OSTI]

the most abundant isotope appears in the denominator: b R = b E / a E (stable boron isotopes = , [ ] [ ] [ ] [ ]OOCOOC2 OOCOOC2 O 16181616 16181818 CO 18 2 + + = . The isotopic composition, , of a sample, determined____________________________ ISOTOPE FRACTIONATION ____________________________ Isotopes are atoms

Zeebe, Richard E.

411

FRACTIONAL SKEW MONOID RINGS P. ARA, M.A. GONZ'ALEZ-BARROSO, K.R. GOODEARL, AND E. PARDO  

E-Print Network [OSTI]

FRACTIONAL SKEW MONOID RINGS P. ARA, M.A. GONZ'ALEZ-BARROSO #12; 2 P. ARA, M.A. GONZ'ALEZ-BARROSO, K.R. GOODEARL, AND E. PARDO In this paper

Bigelow, Stephen

412

Hydrogen isotopic fractionation factor between brucite and water in the temperature range from 100° to 510° C  

Science Journals Connector (OSTI)

The hydrogen isotopic fractionation factor between brucite and water has been determined in the temperature range of 100°–510° C. Brucite is always depleted in deuterium relative to...3In?=8.72×106 ...

Hiroshi Satake; Sadao Matsuo

413

Induced Fractional Zero-Point Canonical Angular Momentum on Charged Particles of Aharonov - Bohm Vector Potential and "Spectator" Magnetic Field  

E-Print Network [OSTI]

The induced fractional zero-point canonical angular momentum on charged particles by the Aharonov - Bohm (AB) vector potential is realized via modified combined traps. It explores new features for this type of quantum effects: In a limit of vanishing mechanical kinetic energy the AB vector potential alone cannot induce a fractional zero-point canonical angular momentum on charged particles at the quantum mechanical level in the AB magnetic field-free region; But for the case of the AB vector potential with another one of a "spectator" magnetic field the AB vector potential induces a fractional zero-point canonical angular momentum in the same limit. The "spectator" one does not contribute to such a fractional zero-point quantity, but plays essential role in guaranteeing non-trivial dynamics survived in this limit at the quantum mechanical level. These results are significance in investigations of the AB effects and related fields for both theories and experiments.

Jian-Zu Zhang

2007-09-06T23:59:59.000Z

414

Interactions of F1 fractions from different strains of shape Paracoccidioides brasiliensis with human complement and with human neutrophils  

Science Journals Connector (OSTI)

The aim of our study was to investigate differences that might exist in the activation of the human complement system by F1 fractions from four different isolates of P. ... of the fungus were processed for purifi...

Luciana Simon Pereira Crott; Yara Maria Lucisano-Valim; Celio Lopes Silva…

415

Interrelated Effects of Aeration and Mixed Liquor Fractions on Membrane Fouling for Submerged Membrane Bioreactor Processes in Wastewater Treatment  

Science Journals Connector (OSTI)

Interrelated Effects of Aeration and Mixed Liquor Fractions on Membrane Fouling for Submerged Membrane Bioreactor Processes in Wastewater Treatment ... using hollow fibers was applied to wastewater treated by the activated-sludge process. ...

Fengshen Fan; Hongde Zhou

2007-02-21T23:59:59.000Z

416

Low-pressure fractionation of strongly undersaturated alkaline ultrabasic magma: the olivine-melilite-nephelinite at Moiliili, Oahu, Hawaii  

Science Journals Connector (OSTI)

The Moiliili fractionation sequence confirms the low-pressure trend olivine-melilite-nephelinite?melilite-bearing nephelinite, previously defined on the basis of relationships in the synthetic system diopside-akermanite

J. F. G. Wilkinson; A. J. Stolz

1983-09-01T23:59:59.000Z

417

Substrate modification by adding ablation of localized complex fractionated electrograms after stepwise linear ablation in persistent atrial fibrillation  

Science Journals Connector (OSTI)

Linear left atrial (LA) ablation in patients with persistent atrial fibrillation (PsAF) resulting in the elimination of most complex fractionated electrogram (CFE) sites has been demonstrated. This study ... desi...

Shiro Nakahara; Tohru Kamijima; Yuichi Hori…

2014-03-01T23:59:59.000Z

418

Production of high-octane automobile gasolines by the catalytic reforming of straight-run gasoline fractions from mangyshlak crude  

Science Journals Connector (OSTI)

High-octane components for AI-93 and AI-98 automobile gasolines can be obtained in 86 and 82% ... 140, 140–180, and 85–180°C gasoline fractions from Mangyshlak crude.

V. A. Kuprianov; A. A. Timofeev; V. E. Gavrun…

1971-08-01T23:59:59.000Z

419

Conversion of the straight-run gasoline fraction of high-paraffin oil on a zeolite catalyst  

Science Journals Connector (OSTI)

The conversion of the straight-run gasoline fraction of high-paraffin crude oil into the high-octane gasoline over niobium-zirconium-aluminosilicate catalyst with the ... composition, and performance characterist...

A. V. Vosmerikov; B. Ulzii; Ya. E. Barbashin; L. L. Korobitsina…

2011-03-01T23:59:59.000Z

420

Point defects introduced by InN alloying into In{sub x}Ga{sub 1-x}N probed using a monoenergetic positron beam  

SciTech Connect (OSTI)

Native defects in In{sub x}Ga{sub 1-x}N (x = 0.06-0.14) grown by metal organic chemical vapor deposition were studied using a monoenergetic positron beam. Measurements of Doppler broadening spectra of the annihilation radiation as a function of incident positron energy for In{sub x}Ga{sub 1-x}N showed that vacancy-type defects were introduced with increasing InN composition, and the major defect species was identified as complexes between a cation vacancy and a nitrogen vacancy. The concentration of the divacancy, however, was found to be suppressed by Mg doping. The momentum distribution of electrons at the In{sub x}Ga{sub 1-x}N/GaN interface was close to that in defect-free GaN or In{sub x}Ga{sub 1-x}N, which was attributed to localization of positrons at the interface due to the built-in electric field, and to suppression of positron trapping by vacancy-type defects. We have also shown that the diffusion property of positrons is sensitive to an electric field near the In{sub x}Ga{sub 1-x}N/GaN interface.

Uedono, A. [Division of Applied Physics, Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan); Tsutsui, T.; Watanabe, T.; Kimura, S.; Zhang, Y. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan); Lozac'h, M. [Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan); National Institute for Materials Science, Tsukuba, Ibaraki 305-0044 (Japan); Sang, L. W.; Sumiya, M. [National Institute for Materials Science, Tsukuba, Ibaraki 305-0044 (Japan); Ishibashi, S. [Nanosystem Research Institute (NRI) 'RICS,' National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568 (Japan)

2013-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


421

Effect of a Compost and Its Water-Soluble Fractions on Key Enzymes of Nitrogen Metabolism in Maize Seedlings  

Science Journals Connector (OSTI)

Effect of a Compost and Its Water-Soluble Fractions on Key Enzymes of Nitrogen Metabolism in Maize Seedlings ... The GC?MS analyses were conducted on a PerkinElmer Autosystem XL gas chromatograph, equipped with a PerkinElmer Turbomass Gold mass spectrometer. ... Such components are liable to ensure the solubility of these compost fractions, thereby conferring a more flexible conformational structure, and promoting a more efficient diffusion of the bioactive humic-like components at cellular membrane level (47). ...

Silvia Vaccaro; Adele Muscolo; Diego Pizzeghello; Riccado Spaccini; Alessandro Piccolo; Serenella Nardi

2009-11-05T23:59:59.000Z

422

4. FUSION-PRODUCTLOSSESTO FIRST WALL The fraction of particles lost to the wall from a given birth  

E-Print Network [OSTI]

The trapping fraction can be calculated as an immediate consequence of (4.1). For a birth point having zero by (3.3)-s (3.5). Whena birth point has a non-zero loss region, the overlap between X. (4.3b). #12;31 The net loss fraction is: F = total fu~i~n ~roducts lost from plasma~ = I f~ nln2

Hively, Lee M.

423

Melted Murataite Ceramics Containing Simulated Actinide/Rare Earth Fraction of High Level Waste  

SciTech Connect (OSTI)

Murataite-based ceramics with three different chemical compositions containing simulated actinide/rare earth (RE) fraction of HLW were produced in a resistive furnace at a temperature of 1500 deg. C and two of them - in a cold crucible energized from a 5.28 MHz/10 kW high frequency generator. All the samples prepared in resistive furnace were composed of major murataite and minor perovskite, crichtonite, zirconolite, and pyrophanite/ilmenite. The samples produced in the cold crucible were composed of murataite, perovskite, crichtonite, and rutile. Higher content of perovskite and crichtonite in the cold crucible melted ceramic than in the ceramic with the same chemical composition but melted in resistive furnace may be due to higher temperature in the cold crucible (up to 1600-1650 deg. C) at which some fraction of murataite was subjected to decomposition yielding additional amount of perovskite and crichtonite. Method of melting may effect on elemental partitioning in the murataite-containing ceramics because light (Ce-group) REs enter preferably perovskite phase whereas Nd, Sm, and heavy (Y-group) REs are accommodated in the murataite polytypes. Thus, perovskite and murataite are major host phases for the Ce- and Y-group REs, respectively, whereas tetravalent actinides (U) enter murataite only.

Stefanovsky, S.V.; Ptashkin, A.G.; Knyazev, O.A.; Zen'kovskaya, M.S.; Stefanovsky, O.I. [State Unitary Enterprise SIA Radon, Moscow (Russian Federation); Yudintsev, S.V.; Nikonov, B.S.; Lapina, M.I. [Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian, Academy of Sciences (IGEM RAS), Moscow (Russian Federation)

2008-07-01T23:59:59.000Z

424

Measurements of the Branching fractions for $B_(s) -> D_(s)???$ and $?_b^0 -> ?_c^+???$  

E-Print Network [OSTI]

Branching fractions of the decays $H_b\\to H_c\\pi^-\\pi^+\\pi^-$ relative to $H_b\\to H_c\\pi^-$ are presented, where $H_b$ ($H_c$) represents B^0-bar($D^+$), $B^-$ ($D^0$), B_s^0-bar ($D_s^+$) and $\\Lambda_b^0$ ($\\Lambda_c^+$). The measurements are performed with the LHCb detector using 35${\\rm pb^{-1}}$ of data collected at $\\sqrt{s}=7$ TeV. The ratios of branching fractions are measured to be B(B^0-bar -> D^+\\pi^-\\pi^+\\pi^-)/ B(B^0-bar -> D^+\\pi^-) = 2.38\\pm0.11\\pm0.21 B(B^- -> D^0\\pi^-\\pi^+\\pi^-) / B(B^- -> D^0\\pi^-) = 1.27\\pm0.06\\pm0.11 B(B_s^0-bar -> D_s^+\\pi^-\\pi^+\\pi^-) / B(B_s^0-bar -> D_s^+\\pi^-) = 2.01\\pm0.37\\pm0.20 B(\\Lambda_b^0->\\Lambda_c^+\\pi^-\\pi^+\\pi^-) / B(\\Lambda_b^0 -> \\Lambda_c^+\\pi^-) = 1.43\\pm0.16\\pm0.13. We also report measurements of partial decay rates of these decays to excited charm hadrons. These results are of comparable or higher precision than existing measurements.

LHCb Collaboration; R. Aaij; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves Jr; S. Amato; Y. Amhis; J. Anderson; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; L. Arrabito; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; S. Bachmann; J. J. Back; D. S. Bailey; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; A. Bates; C. Bauer; Th. Bauer; A. Bay; I. Bediaga; K. Belous; I. Belyaev; E. Ben-Haim; M. Benayoun; G. Bencivenni; S. Benson; J. Benton; R. Bernet; M. -O. Bettler; M. van Beuzekom; A. Bien; S. Bifani; A. Bizzeti; P. M. Bjørnstad; T. Blake; F. Blanc; C. Blanks; J. Blouw; S. Blusk; A. Bobrov; V. Bocci; A. Bondar; N. Bondar; W. Bonivento; S. Borghi; A. Borgia; T. J. V. Bowcock; C. Bozzi; T. Brambach; J. van den Brand; J. Bressieux; D. Brett; S. Brisbane; M. Britsch; T. Britton; N. H. Brook; H. Brown; A. Büchler-Germann; I. Burducea; A. Bursche; J. Buytaert; S. Cadeddu; J. M. Caicedo Carvajal; O. Callot; M. Calvi; M. Calvo Gomez; A. Camboni; P. Campana; A. Carbone; G. Carboni; R. Cardinale; A. Cardini; L. Carson; K. Carvalho Akiba; G. Casse; M. Cattaneo; M. Charles; Ph. Charpentier; N. Chiapolini; K. Ciba; X. Cid Vidal; G. Ciezarek; P. E. L. Clarke; M. Clemencic; H. V. Cliff; J. Closier; C. Coca; V. Coco; J. Cogan; P. Collins; F. Constantin; G. Conti; A. Contu; A. Cook; M. Coombes; G. Corti; G. A. Cowan; R. Currie; B. D'Almagne; C. D'Ambrosio; P. David; I. De Bonis; S. De Capua; M. De Cian; F. De Lorenzi; J. M. De Miranda; L. De Paula; P. De Simone; D. Decamp; M. Deckenhoff; H. Degaudenzi; M. Deissenroth; L. Del Buono; C. Deplano; O. Deschamps; F. Dettori; J. Dickens; H. Dijkstra; P. Diniz Batista; S. Donleavy; A. Dosil Suárez; D. Dossett; A. Dovbnya; F. Dupertuis; R. Dzhelyadin; C. Eames; S. Easo; U. Egede; V. Egorychev; S. Eidelman; D. van Eijk; F. Eisele; S. Eisenhardt; R. Ekelhof; L. Eklund; Ch. Elsasser; D. G. d'Enterria; D. Esperante Pereira; L. Estéve; A. Falabella; E. Fanchini; C. Färber; G. Fardell; C. Farinelli; S. Farry; V. Fave; V. Fernandez Albor; M. Ferro-Luzzi; S. Filippov; C. Fitzpatrick; M. Fontana; F. Fontanelli; R. Forty; M. Frank; C. Frei; M. Frosini; S. Furcas; A. Gallas Torreira; D. Galli; M. Gandelman; P. Gandini; Y. Gao; J-C. Garnier; J. Garofoli; J. Garra Tico; L. Garrido; C. Gaspar; N. Gauvin; M. Gersabeck; T. Gershon; Ph. Ghez; V. Gibson; V. V. Gligorov; C. Göbel; D. Golubkov; A. Golutvin; A. Gomes; H. Gordon; M. Grabalosa Gándara; R. Graciani Diaz; L. A. Granado Cardoso; E. Graugés; G. Graziani; A. Grecu; S. Gregson; B. Gui; E. Gushchin; Yu. Guz; T. Gys; G. Haefeli; C. Haen; S. C. Haines; T. Hampson; S. Hansmann-Menzemer; R. Harji; N. Harnew; J. Harrison; P. F. Harrison; J. He; V. Heijne; K. Hennessy; P. Henrard; J. A. Hernando Morata; E. van Herwijnen; E. Hicks; W. Hofmann; K. Holubyev; P. Hopchev; W. Hulsbergen; P. Hunt; T. Huse; R. S. Huston; D. Hutchcroft; D. Hynds; V. Iakovenko; P. Ilten; J. Imong; R. Jacobsson; A. Jaeger; M. Jahjah Hussein; E. Jans; F. Jansen; P. Jaton; B. Jean-Marie; F. Jing; M. John; D. Johnson; C. R. Jones; B. Jost; S. Kandybei; M. Karacson; T. M. Karbach; J. Keaveney; U. Kerzel; T. Ketel; A. Keune; B. Khanji; Y. M. Kim; M. Knecht; S. Koblitz; P. Koppenburg; A. Kozlinskiy; L. Kravchuk; K. Kreplin; M. Kreps; G. Krocker; P. Krokovny; F. Kruse; K. Kruzelecki; M. Kucharczyk; S. Kukulak; R. Kumar; T. Kvaratskheliya; V. N. La Thi; D. Lacarrere; G. Lafferty; A. Lai; D. Lambert; R. W. Lambert; E. Lanciotti; G. Lanfranchi; C. Langenbruch; T. Latham; R. Le Gac; J. van Leerdam; J. -P. Lees; R. Lefévre; A. Leflat; J. Lefrançois; O. Leroy; T. Lesiak; L. Li; L. Li Gioi; M. Lieng; M. Liles; R. Lindner; C. Linn; B. Liu; G. Liu; J. H. Lopes; E. Lopez Asamar; N. Lopez-March; J. Luisier; F. Machefert; I. V. Machikhiliyan; F. Maciuc; O. Maev; J. Magnin; S. Malde; R. M. D. Mamunur; G. Manca; G. Mancinelli; N. Mangiafave; U. Marconi; R. Märki; J. Marks; G. Martellotti; A. Martens; L. Martin; A. Martín Sánchez; D. Martinez Santos; A. Massafferri; Z. Mathe; C. Matteuzzi; M. Matveev; E. Maurice; B. Maynard; A. Mazurov; G. McGregor; R. McNulty; C. Mclean; M. Meissner; M. Merk; J. Merkel; R. Messi; S. Miglioranzi; D. A. Milanes; M. -N. Minard; S. Monteil; D. Moran; P. Morawski; R. Mountain; I. Mous; F. Muheim; K. Müller; R. Muresan; B. Muryn; M. Musy; J. Mylroie-Smith; P. Naik; T. Nakada; R. Nandakumar; J. Nardulli; I. Nasteva; M. Nedos; M. Needham; N. Neufeld; C. Nguyen-Mau; M. Nicol; S. Nies; V. Niess; N. Nikitin; A. Oblakowska-Mucha; V. Obraztsov; S. Oggero; S. Ogilvy; O. Okhrimenko; R. Oldeman; M. Orlandea; J. M. Otalora Goicochea; P. Owen; B. Pal; J. Palacios; M. Palutan; J. Panman; A. Papanestis; M. Pappagallo; C. Parkes; C. J. Parkinson; G. Passaleva; G. D. Patel; M. Patel; S. K. Paterson

2011-09-30T23:59:59.000Z

425

Chemical class fractionation and thermophysical property measurements of solvent refined coal liquids  

SciTech Connect (OSTI)

Coal liquids are a potpourri of organic molecules and inorganic particles; they cannot be considered as a single entity because of variations in coals and processing conditions during conversion to liquids. A method of solubility class fractionation originally developed for petroleum asphalts was adapted to coal liquids. The component classes - asphaltols, asphaltenes, resins, and oils - were separated according to their solubilities in benzene, pentane, and propane. Important physical and thermodynamic properties (viscosity, density, dielectric constant, and conductivity) of these fractions were determined as a function of temperature. In many cases these are the only values currently available to other investigators and are much in demand. We observed that density was most affected by the solids, as expected; however, the dielectric constant was most affected by the asphaltols, the viscosity by the resins (closely followed by the asphaltenes), and the conductivity by the resins. This led to the conclusion that the asphaltols contain the most polarizable material and the resins the most ionizable material. The conductivity remaining after all these materials were removed (10/sup -9/ mho/cm) and the dielectric constant (4.5) are still significantly higher than the corresponding values for most pure hydrocarbons and are important characteristics of these materials.

Hewitt, J.D.; Rodgers, B.R.

1980-01-01T23:59:59.000Z

426

Hanford Supplemental Treatment: Literature and Modeling Review of SRS HLW Salt Dissolution and Fractional Crystallization  

SciTech Connect (OSTI)

In order to accelerate waste treatment and disposal of Hanford tank waste by 2028, the Department of Energy (DOE) and CH2M Hill Hanford Group (CHG), Inc. are evaluating alternative technologies which will be used in conjunction with the Waste Treatment Plant (WTP) to safely pretreat and immobilize the tank waste. Several technologies (Bulk Vitrification and Steam Reforming) are currently being evaluated for immobilizing the pretreated waste. Since the WTP does not have sufficient capacity to pretreat all the waste going to supplemental treatment by the 2028 milestone, two technologies (Selective Dissolution and Fractional Crystallization) are being considered for pretreatment of salt waste. The scope of this task was to: (1) evaluate the recent Savannah River Site (SRS) Tank 41 dissolution campaign and other literature to provide a more complete understanding of selective dissolution, (2) provide an update on the progress of salt dissolution and modeling activities at SRS, (3) investigate SRS experience and outside literature sources on industrial equipment and experimental results of previous fractional crystallization processes, and (4) evaluate recent Hanford AP104 boildown experiments and modeling results and recommend enhancements to the Environmental Simulation Program (ESP) to improve its predictive capabilities. This report provides a summary of this work and suggested recommendations.

Choi, A. S.; Flach, G. P.; Martino, C. J.; Zamecnik, J. R.; Harris, M. K.; Wilmarth, W. R.; Calloway, T. B.

2005-03-23T23:59:59.000Z

427

Study of thermal conversion of naphthenic oils on the basis of analysis of their middle fractions  

SciTech Connect (OSTI)

The composition of the middle fractions of the thermal decomposition products of naphthenic oils obtained at 300, 350, and 400{degrees}C was studied. It was shown that the character of conversions of petroleum hydrocarbons is governed by the intensity of thermal treatment and by the chemical nature of the starting oil. The removal of aliphatic chains from high-boiling components of the petroleum at a temperature below 350{degrees}C results in the new formation of linear and isoprene alkanes in their middle fractions similarly to the catagenic transformations of oils in deposits. The rise in temperature up to 400{degrees}C enhances the destruction processes related to extension of the reactions of the homolytic cleavage of C-C bonds in aliphatic chains. This results in practically complete destruction of isoprene alkanes and in predominance of low-molecular homologs among the linear alkanes. On the basis of the results obtained it can be supposed that the thermal treatment is an important factor in the conversion of naphthenic oils into paraffin oils. 10 refs., 2 figs., 3 tabs.

Kayukova, G.P.; Kurbskii, G.P.; Mutalapova, R.I. [A.E. Arbuzov Inst. of Organic and Physical Chemistry, Kazan (Russian Federation)] [and others

1994-05-10T23:59:59.000Z

428

Additional wet milling step for fractionation of barley flour after hull separation  

Science Journals Connector (OSTI)

Fuel ethanol production from barley is increasing and there is a need to develop more efficient production processes. In the conventional ethanol production process, the hulls (fiber) in barley do not get fermented. The objective of this study is to evaluate a wet fractionation method, similar to the one used in corn wet milling in the endosperm fiber separation step, on the flour remaining after hull separation from barley in order to increase the starch content of barley flour. Hulls were separated from hammer milled barley flour using a combination of sieving and air classification. The remaining flour was soaked in water and the slurry was ground using an attrition mill. The cell wall material was screened out from the fine slurry. The fermentation material produced by hull separation followed by wet fractionation comprised 80.9% by weight of the original flour and contained 10.1% higher starch and 7.9% lower fiber (neutral detergent fiber; NDF) contents than the original flour. The cell wall coproduct has potential as a functional food ingredient because it has high fiber (NDF of 42.7%), high beta-glucan (4.5%) and high protein (20.2%) contents. The increase in starch content may be beneficial in fuel ethanol production.

Radhakrishnan Srinivasan; Kaleb Smith

2012-01-01T23:59:59.000Z

429

Can photo-ionization explain the decreasing fraction of X-ray obscured AGN with luminosity?  

E-Print Network [OSTI]

Chandra and XMM surveys show that the fraction of obscured AGN decreases rapidly with increasing luminosity. Although this is usually explained by assuming that the covering factor of the central engine is much smaller at luminous QSOs, the exact origin of this effect remains unknown. We perform toy simulations to test whether photo-ionisation of the obscuring screen in the presence of a strong radiation field can reproduce this effect. In particular, we create X-ray spectral simulations using a warm absorber model assuming a range of input column densities and ionization parameters. We fit instead the simulated spectra with a simple cold absorption power-law model that is the standard practice in X-ray surveys. We find that the fraction of absorbed AGN should fall with luminosity as $L^{-0.16\\pm0.03}$ in rough agreement with the observations. Furthermore, this apparent decrease in the obscuring material is consistent with the dependence of the FeK$\\alpha$ narrow-line equivalent width on luminosity, ie. the X-ray Baldwin effect.

A. Akylas; I. Georgantopoulos

2008-01-29T23:59:59.000Z

430

Development of high void fraction polylactide composite foams using injection molding: Mechanical and thermal insulation properties  

Science Journals Connector (OSTI)

Abstract Polylactide (PLA) and PLA composites with void fractions as high as 65% were fabricated using low-pressure foam injection molding (FIM) and high-pressure FIM (HPFIM) equipped with mold opening and gas counter pressure. The cellular morphology and crystallinity were characterized using scanning electron microscopy and differential scanning calorimetry, respectively. The mechanical (flexural and impact resistance) and thermal insulation properties were also measured. Unlike, talc, the addition of nanoclay markedly enhanced the ductility of solid PLA samples as well as significantly improved the cell morphology of foamed samples, which resulted in the increased specific modulus, strength and impact resistance. In all the PLA samples made using HPFIM, with an increased void fraction up to 55%, the flexural rigidity increased up to four times, the specific impact resistance increased up to 15%, and the thermal insulation increased up to three times. The results of this investigation revealed that low-density PLA composite foams with improved rigidity, impact strength, and thermal insulation can be developed using HPFIM for various applications such as transportation and construction industries.

A. Ameli; D. Jahani; M. Nofar; P.U. Jung; C.B. Park

2014-01-01T23:59:59.000Z

431

Standard test method for measurement of 235U fraction using enrichment meter principle  

E-Print Network [OSTI]

1.1 This test method covers the quantitative determination of the fraction of 235U in uranium using measurement of the 185.7 keV gamma-ray produced during the decay of 235U. 1.2 This test method is applicable to items containing homogeneous uranium-bearing materials of known chemical composition in which the compound is considered infinitely thick with respect to 185.7 keV gamma-rays. 1.3 This test method can be used for the entire range of 235U fraction as a weight percent, from depleted (0.2 % 235U) to highly enriched (97.5 % 235U). 1.4 Measurement of items that have not reached secular equilibrium between 238U and 234Th may not produce the stated bias when low-resolution detectors are used with the computational method listed in Annex A2. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety co...

American Society for Testing and Materials. Philadelphia

2008-01-01T23:59:59.000Z

432

Determination of neutral beam energy fractions from collisional radiative measurements on DIII-D  

SciTech Connect (OSTI)

Neutral beams based on positive ion source technology are a key component of contemporary fusion research. An accurate assessment of the injected beam species mix is important for determining the actual plasma heating and momentum input as well as proper interpretation of beam-based diagnostics. On DIII-D, the main ion charge-exchange spectroscopy system is used to extract well-resolved intensity ratios of the Doppler-shifted D{sub {alpha}} emission from the full, half, and third energy beam components for a variety of beam operational parameters. In conjunction with accurate collisional-radiative modeling, these measurements indicate the assumed species mix and power fractions can vary significantly and should be regularly monitored and updated for the most accurate interpretation of plasma performance. In addition, if stable active control of the power fractions can be achieved through appropriate source tuning, the resulting control over the deposition profile can serve as an additional experimental knob for advanced tokamak studies, e.g., varying the off axis beam current drive without altering the beam trajectory.

Thomas, D. M.; Van Zeeland, M. A. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Grierson, B. A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Munoz Burgos, J. M. [Oak Ridge Institute for Science Education, Oak Ridge, Tennessee 37831-0117 (United States)

2012-10-15T23:59:59.000Z

433

In: Proceedings of SPIE Conference on Medical Imaging (4684), pp. 201-205, Feb. 2002. Robustness of the Brain Parenchymal Fraction for Measuring Brain  

E-Print Network [OSTI]

of the Brain Parenchymal Fraction for Measuring Brain Atrophy M. Stella Atkins, Jeff J. Orchard, Ben Law ABSTRACT Other researchers have proposed that the brain parenchymal fraction (or brain atrophy) may considers various factors influencing the measure of the brain parenchymal fraction obtained from dual spin

Orchard, Jeffery J.

434

DETERMINATION OF THE FRACTION OF GIBBSITE AND BOEHMITE FORMS OF ALUMINUM IN TANK 51H SLUDGE  

SciTech Connect (OSTI)

The Savannah River National Laboratory (SRNL) was tasked with developing a test to determine the fraction of the gibbsite and boehmite forms of aluminum in the sludge solids. Knowledge of the fractions of gibbsite and boehmite in the sludge contained in various waste tanks would facilitate better sludge mass reduction estimates and allow better planning/scheduling for sludge batch preparation. The composite sludge sample prepared for use in the test from several small samples remaining from the original 3-L sample appears to be representative of the original sample based on the characterization data. A Gibbsite/Boehmite Test was developed that uses 8 M NaOH and a temperature of 65 C to dissolve aluminum. The soluble aluminum concentration data collected during the test indicates that, for the three standards containing gibbsite, all of the gibbsite dissolved in approximately 2 hours. Under the test conditions boehmite dissolved at more than an order of magnitude more slowly than gibbsite. An estimate based on the soluble aluminum concentration from the sludge sample at two hours into the test indicates the sludge solids contain a form of aluminum that dissolves at a rate similar to the 100% Boehmite standard. Combined with the XRD data from the original 3-L sample, these results provide substantial evidence that the boehmite form of aluminum predominates in the sludge. A calculation from the results of the Gibbsite/Boehmite test indicates the sludge contains {approx}3% gibbsite and {approx}97% boehmite. The sludge waste in Tank 51H was recently treated under Low Temperature Aluminum Dissolution (LTAD) conditions and a substantial fraction of aluminum (i.e., sludge mass) was removed, avoiding production of over 100 glass canisters in Defense Waste Processing Facility (DWPF). Results of the Gibbsite/Boehmite test indicate that the aluminum in this sludge was in the form of the more difficult to dissolve boehmite form of aluminum. Since boehmite may be the dominant form of aluminum in Savannah River Site (SRS) waste tank sludge, this result suggests that the conditions of the LTAD process can be used to dissolve both the gibbsite and boehmite forms of aluminum in tank sludge and costly tank infrastructure upgrades required for the higher temperature baseline process can be avoided. However, this conclusion should be confirmed by testing additional waste tank samples.

Hay, M; Kofi Adu-Wusu, K; Daniel McCabe, D

2008-08-31T23:59:59.000Z

435

Singlet-Triplet Energy Gaps for Diradicals from Fractional-Spin Density-Functional Theory  

SciTech Connect (OSTI)

Open-shell singlet diradicals are difficult to model accurately within conventional Kohn?Sham (KS) density-functional theory (DFT). These methods are hampered by spin contamination because the KS determinant wave function is neither a pure spin state nor an eigenfunction of the S2 operator. Here we present a theoretical foray for using single-reference closed-shell ground states to describe diradicals by fractional-spin DFT (FS-DFT). This approach allows direct, self-consistent calculation of electronic properties using the electron density corresponding to the proper spin eigenfunction. The resulting FS-DFT approach is benchmarked against diradical singlet?triplet gaps for atoms and small molecules. We have also applied FS-DFT to the singlet?triplet gaps of hydrocarbon polyacenes.

Ess, Daniel H.; Johnson, E R; Hu, Xiangqian; Yang, W T

2011-01-01T23:59:59.000Z

436

Measurement of Branching Fraction and CP-Violating Asymmetry for B-> omega K0s  

SciTech Connect (OSTI)

The authors present a preliminary measurement of the branching fraction and CP-violating parameters S and C for the decay B{sup 0} {yields} {omega}K{sub S}{sup 0}. The data sample corresponds to 232 x 10{sup 6} B{bar B} pairs produced from e{sup +}e{sup -} annihilation at the {Upsilon}(4S) resonance. They measure {Beta}(B{sup 0} {yields} {omega}K{sup 0}) = (5.9 {+-} 1.0 {+-} 0.4) x 10{sup -6}, S = 0.50{sub -0.38}{sup +0.34} {+-} 0.02 and C = -0.56{sub -0.27}{sup +0.29} {+-} 0.03.

Aubert, B.; Barate, R.; Boutigny, D.; Couderc, F.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Tisserand, V.; Zghiche, A.; /Annecy, LAPP; Grauges, E.; /Barcelona, IFAE; Palano, A.; Pappagallo, M.; Pompili, A.; /Bari U. /INFN, Bari; Chen, J.C.; Qi, N.D.; Rong, G.; Wang, P.; Zhu, Y.S.; /Beijing, Inst. High Energy Phys.; Eigen, G.; Ofte, I.; Stugu, B. /Bergen U. /LBL, Berkeley /UC, Berkeley /Birmingham U. /Ruhr U., Bochum /Bristol U. /British Columbia U. /Brunel U. /Novosibirsk, IYF /UC, Irvine /UCLA /UC, Riverside /UC, San

2005-06-08T23:59:59.000Z

437

Liquefaction of cellulosic wastes. 6: Oxygen compounds in pyrolytic oil and water fractions  

SciTech Connect (OSTI)

Liquid hydrocarbon oil and water have been produced from the liquefaction of cellulosic matter present in municipal solid wastes. The produced pyrolytic oil and water fraction seemed to be contaminated with considerable amounts of oxygen compounds as compared with fuels derived from a petroleum origin. The oxygen compounds included organic acids (fatty and naphthenic acids), phenols, and carbonyl compounds. These classes of oxygen compounds were extracted selectively from the pyrolytic oils and water using chemical extraction methods. Methyl esters of fatty acids and 2,4-dinitrophenylhydrazones of carbonyl compounds were identified by gas chromatography and thin layer chromatography, respectively. It was suggested that the identified oxygen compounds could be produced from the pyrolysis of volatiles (e.g., levoglucosane, which is the primary product of cellulose depolymerization) via different mechanistic pathways.

Gharieb, H.K.; Faramawy, S.; El-Amrousi, F.A.; El-Sabagh, S.M. [Egyptian Petroleum Research Inst., Cairo (Egypt)

1998-07-01T23:59:59.000Z

438

Evaluation of protein fractionation and ruminal and intestinal digestibility of corn milling co-products  

Science Journals Connector (OSTI)

Novel corn milling co-products developed from technological advancements in ethanol production vary widely in chemical composition and nutrient availability. The objectives of this study were to characterize feed protein fractions and evaluate differences in rumen-undegradable protein (RUP) and its digestible fraction (dRUP), amino acid concentration, and in vitro gas production of 7 corn milling co-products. The crude protein (CP; % of dry matter) of co-products was 12.7 for germ, 26.9 for dried distillers grains plus solubles that had no heat exposure before fermentation (DDGS1), 45.4 for high-protein dried distillers grains (HPDDG), 12.7 for bran, 30.2 for wet distillers grains plus solubles (WDGS), 23.1 for wet corn gluten feed (WCGF), and 26.0 for dried distillers grains plus solubles that had heat exposure before fermentation (DDGS2). Two ruminally and duodenally fistulated Holstein steers weighing 663 ± 24 kg were used to determine RUP and dRUP with the in situ and mobile bag techniques. Samples of each feed were ruminally incubated for 16 h, and mobile bags were exposed to simulated abomasal digestion before insertion into the duodenum and subsequent collection in the feces. Protein fractions A, B1, B2, B3, and C were characterized as follows (% CP): germ = 30.0, 15.0, 38.1, 13.5, 3.4; DDGS1 = 17.0, 7.0, 67.0, 4.8, 4.2; HPDDG = 7.4, 0.6, 82.4, 8.8, 0.8; bran = 33.5, 4.0, 54.3, 6.0, 2.2; WDGS = 18.6, 2.4, 53.1, 11.0, 14.9; WCGF = 36.6, 15.9, 33.2, 10.1, 4.1; and DDGS2 = 17.9, 2.1, 41.1, 11.1, 27.9. The proportions of RUP and dRUP were different and are reported as follows (% CP): DDGS2 = 56.3, 91.9; HPDDG = 55.2, 97.7; WDGS = 44.7, 93.1; DDGS1 = 33.2, 92.1; bran = 20.7, 65.8; germ = 16.5, 66.8; and WCGF = 11.5, 51.1. The concentrations of Lys and Met in the RUP were different and are listed as follows (% CP): germ = 2.9, 2.0; DDGS1 = 1.9, 2.0; HPDDG = 2.0, 3.2; bran = 3.2, 1.5; WDGS = 1.9, 2.3; WCGF = 3.5, 1.6; and DDGS2 = 1.9, 2.4. In vitro gas production (mL/48 h) was highest for germ (52.1) followed by bran (50.1), WDGS (40.7), DDGS2 (40.1), WCGF (39.0), DDGS1 (38.6), and HPDDG (37.5). Comparison of co-products defined differences in chemical composition, protein fractionation, ruminal availability, and microbial fermentation.

J.M. Kelzer; P.J. Kononoff; L.O. Tedeschi; T.C. Jenkins; K. Karges; M.L. Gibson

2010-01-01T23:59:59.000Z

439

Calculation of geothermal reservoir temperatures and steam fractions from gas compositions  

SciTech Connect (OSTI)

This paper deals with the chemical equilibria and physical characteristics of the fluid in the reservoir (temperature, steam fraction with respect to total water, gas/steam ratio, redox conditions), which seem to be responsible for the observed concentrations of some reactive species found in the geothermal fluids (CO2, H2, H2S and CH4). Gas geochemistry is of particular interest in vapor-dominated fields where the fluid discharged consists of almost pure steam containing a limited number of volatile chemical species. Considering several geothermal systems, a good correlation has been obtained among the temperatures calculated from the gas geothermometers and the temperatures measured in the reservoir of evaluated by other physical or chemical methods. 24 refs., 5 figs.

D'Amore, F.; Truesdell, A.H.

1985-01-01T23:59:59.000Z

440

Hydrolysis and composition of recovered fibres fractionated from solid recovered fuel  

Science Journals Connector (OSTI)

Abstract Fibres fractionated from solid recovered fuel (SRF), a standardised market combustion fuel produced from sorted waste, were considered as a source of lignocellulosic fermentable sugars. The fibre yield from four samples of SRF was 25–45%, and the separated material consisted of 52–54% carbohydrates, mainly glucan, with a high content of ash (12–17%). The enzymatic digestibility of recovered fibres was studied at low and high solids loading and compared with model substrates containing only chemical and mechanical pulps. Above 80% hydrolysis yield was reached at 20% solids loading in 48 h, but variation was observed between different samples of recovered fibres. Surfactants were found to improve the hydrolysis yield of recovered fibres especially in tumbling-type of mixing at low solids loading, where hydrolysis was found to stagnate without surfactants. The results suggest that SRF is a potential source of easily digestible lignocellulosic carbohydrates for use in biorefineries.

K. Kemppainen; M. Siika-aho; A. Östman; E. Sipilä; T. Puranen; N. von Weymarn; K. Kruus

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "introduced fractional horsepower" from the National Library of EnergyBeta (NLEBeta).
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441

Sequential fractionation of value-added coconut products using membrane processes  

Science Journals Connector (OSTI)

Abstract The coconut waste-skimmed coconut milk was employed for sequential fractionation using UF and NF membranes to produce value-added products (coconut proteins, plant hormones – kinetin and zeatin). The retention factors achieved by UF membrane (PS10): albumin (0.9822 ± 0.0799) and globulin (0.9975 ± 0.0783); NF membrane (NF1): kinetin (0.9238 ± 0.0345) and zeatin (0.9511 ± 0.0355). Coconut protein powder was obtained after spray-drying process using concentrated coconut protein (UF retentate). SDS-PAGE showed that molecular weights of the coconut proteins were 17, 34, 55 and 150 kDa. Proximate and HPLC analyses revealed that the obtained samples were enriched with basic nutrients and well-balanced amino acids composition, respectively.

Ching Yin Ng; Abdul Wahab Mohammad; Law Yong Ng; Jamaliah Md Jahim

2014-01-01T23:59:59.000Z

442

Linear and multilinear fractional operators: weighted inequalities, sharp bounds, and other properties  

E-Print Network [OSTI]

Rn,jEjdenotes the Lebesgue measure of E, w(E)=RE w dx is the weighted measure of E. Most of the time we will be working on Lp(w) where w is a weight. 1.1.1 Operators on Lp spaces Let (X;m) and (Y;n) be two measure spaces, and suppose...=hu; ?firespectively. 22 Definition 1.2.7. Let 0 < a < n, we define the fractional integral operator or Riesz potential by Ia f(x)= Z Rn f(y) jx yjn a dy: We notice that the functionj ja n is locally integrable for 0

443

Measurement of the B -> Dl nu branching fractions and form factor  

E-Print Network [OSTI]

J. Lee, 19 H. Schwarthoff, 19 A. Wolf, 19 M.M. Zoeller, 19 S.J. Richichi, 20 H. Severini, 20 P. Skubic, 20 A. Undrus, 20 M. Bishai, 21 S. Chen, 21 J. Fast, 21 J.W. Hinson, 21 N. Menon, 21 D.H. Miller, 21 E.I. Shibata, 21 I.P.J. Shipsey, 21 S. Glenn... efficiency and the smearing in ?w. The fraction of D 0 , 2 ?n decays in each w bin that is recon- structed is 17% to 21% and the average ?w resolution is 0.026, about one-half the bin width. The small statistical uncertainty in e ij is represented by s 2 e ij...

Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L.

1999-05-01T23:59:59.000Z

444

Measurement of the $\\Xi^0 \\rightarrow \\Lambda\\gamma$ Decay Asymmetry and Branching Fraction  

E-Print Network [OSTI]

In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative hyperon decay Xi0 -> Lambda gamma have been found with an estimated background of 58 +- 8 events. From these events the Xi0 -> Lambda gamma decay asymmetry has been determined to alpha(Xi0 -> Lambda gamma) = -0.78 +- 0.18_stat +- 0.06_syst, which is the first evidence of a decay asymmetry in Xi0 -> Lambda gamma. The branching fraction of the decay has been measured to be Br(Xi0 -> Lambda gamma) = (1.16 +- 0.05_stat +- 0.06_syst) x 10^-3.

Lai, A; Bevan, A; Dosanjh, R S; Gershon, T J; Hay, B; Kalmus, George Ernest; Lazzeroni, C; Munday, D J; Olaiya, E; Parker, M A; White, T O; Wotton, S A; Barr, G; Bocquet, G; Ceccucci, Augusto; Çuhadar-Dönszelmann, T; Cundy, Donald C; D'Agostini, Giulio; Doble, Niels T; Falaleev, V P; Gatignon, L; Gonidec, A; Gorini, B; Govi, G; Grafström, P; Kubischta, Werner; Lacourt, A; Norton, A; Palestini, S; Panzer-Steindel, B; Taureg, Hans; Velasco, M; Wahl, H; Cheshkov, C; Gaponenko, A N; Khristov, P Z; Kekelidze, V D; Madigozhin, D T; Molokanova, N A; Potrebenikov, Yu K; Tatishvili, G T; Tkachev, A L; Zinchenko, A I; Knowles, I; Martin, V; Sacco, R; Walker, A; Contalbrigo, M; Dalpiaz, Pietro; Duclos, J; Frabetti, P L; Gianoli, A; Martini, M; Petrucci, F; Savrié, M; Bizzeti, A; Calvetti, M; Collazuol, G; Graziani, G; Iacopini, E; Lenti, M; Martelli, F; Veltri, M; Becker, H G; Eppard, K; Eppard, M; Fox, H; Kalter, A; Kleinknecht, K; Koch, U; Köpke, L; Lopes da Silva, P; Marouelli, P; Pellmann, I A; Peters, A; Renk, B; Schmidt, S A; Schönharting, V; Schué, Yu; Wanke, R; Winhart, A; Wittgen, M; Chollet, J C; Fayard, L; Iconomidou-Fayard, L; Ocariz, J; Unal, G; Wingerter-Seez, I; Anzivino, Giuseppina; Cenci, P; Imbergamo, E; Lubrano, P; Mestvirishvili, A; Nappi, A; Pepé, M; Piccini, M; Bertanza, L; Carosi, R; Casali, R; Cerri, C; Cirilli, M; Costantini, F; Fantechi, R; Giudici, Sergio; Mannelli, I; Pierazzini, G M; Sozzi, M; Chèze, J B; Cogan, J; De Beer, M; Debu, P; Formica, A; Granier de Cassagnac, R; Mazzucato, E; Peyaud, B; Turlay, René; Vallage, B; Holder, M; Maier, A; Ziolkowski, M; Arcidiacono, R; Biino, C; Cartiglia, N; Guida, R; Marchetto, F; Menichetti, E; Pastrone, N; Nassalski, J P; Rondio, Ewa; Szleper, M; Wislicki, W; Wronka, S; Dibon, Heinz; Fischer, G; Jeitler, Manfred; Markytan, Manfred; Mikulec, I; Neuhofer, Günther; Pernicka, Manfred; Taurok, Anton; Widhalm, L

2004-01-01T23:59:59.000Z

445

Hydrogen transfer in transformations of olefin and thiophene compounds for the refining of gasoline fractions  

Science Journals Connector (OSTI)

Abstract Hydrogen transfer reactions in the transformations of mixtures of model hydrocarbons (hydrogen donors and acceptors) on zeolite catalysts were studied. Hydrogen donors were represented by various classes of hydrocarbons, and acceptors—by unsaturated (olefin) and thiophene compounds. The [H]-donor activity series of hydrocarbons was revealed. Strong differences in the transformation pathways of 1-hexene and 1-octene under the conditions of catalytic refining were demonstrated. A new method for the refining of low-rank gasoline fractions was proposed. The method is based on the hydrogen transfer reactions between hydrogen donor hydrocarbons and hydrogen acceptor hydrocarbons, which proceed without molecular hydrogen. The proposed method allows the simultaneous removal of sulfur (more than 95%) and unsaturated (more than 90%) compounds.

Oleg V. Potapenko; Vladimir P. Doronin; Tatyana P. Sorokina; Vladimir A. Likholobov

2014-01-01T23:59:59.000Z

446

Prediction of equilibrium Li isotope fractionation between minerals and aqueous solutions at high P and T: an efficient ab initio approach  

E-Print Network [OSTI]

The mass-dependent equilibrium stable isotope fractionation between different materials is an important geochemical process. Here we present an efficient method to compute the isotope fractionation between complex minerals and fluids at high pressure, P, and temperature, T, representative for the Earth's crust and mantle. The method is tested by computation of the equilibrium fractionation of lithium isotopes between aqueous fluids and various Li bearing minerals such as staurolite, spodumene and mica. We are able to correctly predict the direction of the isotope fractionation as observed in the experiments. On the quantitative level the computed fractionation factors agree within 1.0 permil with the experimental values indicating predictive power of ab initio methods. We show that with ab initio methods we are able to investigate the underlying mechanisms driving the equilibrium isotope fractionation process, such as coordination of the fractionating elements, their bond strengths to the neighboring atoms, c...

Kowalski, Piotr M

2011-01-01T23:59:59.000Z

447

Relationship between cloud radiative forcing, cloud fraction and cloud albedo, and new surface-based approach for determining cloud albedo  

SciTech Connect (OSTI)

This paper focuses on three interconnected topics: (1) quantitative relationship between surface shortwave cloud radiative forcing, cloud fraction, and cloud albedo; (2) surface-based approach for measuring cloud albedo; (3) multiscale (diurnal, annual and inter-annual) variations and covariations of surface shortwave cloud radiative forcing, cloud fraction, and cloud albedo. An analytical expression is first derived to quantify the relationship between cloud radiative forcing, cloud fraction, and cloud albedo. The analytical expression is then used to deduce a new approach for inferring cloud albedo from concurrent surface-based measurements of downwelling surface shortwave radiation and cloud fraction. High-resolution decade-long data on cloud albedos are obtained by use of this surface-based approach over the US Department of Energy's Atmospheric Radiaton Measurement (ARM) Program at the Great Southern Plains (SGP) site. The surface-based cloud albedos are further compared against those derived from the coincident GOES satellite measurements. The three long-term (1997-2009) sets of hourly data on shortwave cloud radiative forcing, cloud fraction and cloud albedo collected over the SGP site are analyzed to explore the multiscale (diurnal, annual and inter-annual) variations and covariations. The analytical formulation is useful for diagnosing deficiencies of cloud-radiation parameterizations in climate models.

Liu, Y.; Wu, W.; Jensen, M. P.; Toto, T.

2011-07-21T23:59:59.000Z

448

Cellulose solvent- and organic solvent-based lignocellulose fractionation enabled efficient sugar release from a variety of lignocellulosic feedstocks  

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

Cellulose solvent- and organic solvent-based lignocellulose fractionation ena- Cellulose solvent- and organic solvent-based lignocellulose fractionation ena- bled efficient sugar release from a variety of lignocellulosic feedstocks Noppadon Sathitsuksanoh, Zhiguang Zhu, Y.-H. Percival Zhang PII: S0960-8524(12)00712-2 DOI: http://dx.doi.org/10.1016/j.biortech.2012.04.088 Reference: BITE 9966 To appear in: Bioresource Technology Received Date: 29 February 2012 Revised Date: 21 April 2012 Accepted Date: 21 April 2012 Please cite this article as: Sathitsuksanoh, N., Zhu, Z., Percival Zhang, Y.-H., Cellulose solvent- and organic solvent- based lignocellulose fractionation enabled efficient sugar release from a variety of lignocellulosic feedstocks, Bioresource Technology (2012), doi: http://dx.doi.org/10.1016/j.biortech.2012.04.088 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers

449

The 2dF Galaxy Redshift Survey: The blue galaxy fraction and implications for the Butcher-Oemler effect  

E-Print Network [OSTI]

We derive the fraction of blue galaxies in a sample of clusters at z < 0.11 and the general field at the same redshift. The value of the blue fraction is observed to depend on the luminosity limit adopted, cluster-centric radius and, more generally, local galaxy density, but it does not depend on cluster properties. Changes in the blue fraction are due to variations in the relative proportions of red and blue galaxies but the star formation rate for these two galaxy groups remains unchanged. Our results are most consistent with a model where the star formation rate declines rapidly and the blue galaxies tend to be dwarfs and do not favour mechanisms where the Butcher-Oemler effect is caused by processes specific to the cluster environment.

Roberto De Propris; Matthew Colless; John Peacock; Warrick Couch; Simon Driver; Michael Balogh; Ivan Baldry; Carlton Baugh; Joss Bland-Hawthorn; Terry Bridges; Russell Cannon; Shaun Cole; Chris Collins; Nicholas Cross; Gavin Dalton; George Efstathiou; Richard Ellis; Carlos Frenk; Karl Glazebrook; Edward Hawkins; Carole Jackson; Ofer Lahav; Ian Lewis; Stuart Lumsden; Steve Maddox; Darren Madgwick; Peder Norberg; Will Percival; Bruce Peterson; Will Sutherland; Keith Taylor

2004-02-26T23:59:59.000Z

450

Magnesium isotope fractionation between brucite [Mg(OH)2] and Mg aqueous species: Implications for silicate weathering and biogeochemical processes  

Science Journals Connector (OSTI)

Abstract Brucite, with its octahedral structure, has a lattice configuration that is similar to the Mg-bearing octahedral layers in phyllosilicates. Understanding stable Mg isotope fractionation between brucite and aqueous solution therefore bears on interpretation of Mg isotope data in natural weathering systems. In this study, we experimentally determined Mg isotope fractionation between brucite and two Mg aqueous species, the free Mg aquo ion ([Mg(OH2)6]2+) and EDTA-bonded Mg (Mg-EDTA2?). Results from recrystallization and brucite synthesis experiments suggest mild preferential partitioning of light Mg isotopes into brucite compared to Mg aquo ions at low temperatures, where measured ? Mg brucite - Mg 2 + 26 fractionation increased from ca. ? 0.3 ‰ at 7?°C, to ca. ? 0.2 ‰ at 22?°C, to ca. 0‰ at 40?°C. MgO hydrolysis experiments in EDTA-bearing solutions suggest that the ? Mg brucite - Mg - EDTA 26 fractionation is ? + 2.0 ‰ at 22?°C, indicating that light Mg isotopes strongly partition into Mg-EDTA complex relative to brucite, as well as relative to Mg aquo ions. Magnesium atoms in brucite, Mg aquo ions, and Mg-EDTA complexes are all octahedrally coordinated, and the measured Mg isotope fractionations correlate with average bond lengths for Mg. Aqueous Mg ions have the shortest bond length among the three phases, and enrich heavy Mg isotopes relative to brucite and Mg-EDTA. In contrast, Mg-EDTA has the longest average bond length for Mg, and enriches light Mg isotopes relative to Mg aquo ions and brucite; the relatively long Mg-EDTA bond suggests that organically bound Mg may commonly have low 26Mg/24Mg ratios, which may explain proposed “vital” effects for stable Mg isotopes. Such relations between bond length and Mg isotope fractionation could be extended to other phyllosilicates such as serpentine- and clay-group minerals where Mg is also octahedrally coordinated.

Weiqiang Li; Brian L. Beard; Chengxiang Li; Clark M. Johnson

2014-01-01T23:59:59.000Z

451

Outcome of Patients Treated With a Single-Fraction Dose of Palliative Radiation for Cutaneous T-Cell Lymphoma  

SciTech Connect (OSTI)

Purpose: Cutaneous T-cell lymphoma (CTCL) is a radiosensitive tumor. Presently, treatment with radiation is given in multiple fractions. The current literature lacks data that support single-fraction treatment for CTCL. This retrospective review assesses the clinical response in patients treated with a single fraction of radiation. Methods and Materials: This study reviewed the records of 58 patients with CTCL, primarily mycosis fungoides, treated with a single fraction of palliative radiation therapy (RT) between October 1991 and January 2011. Patient and tumor characteristics were reviewed. Response rates were compared using Fisher's exact test and multiple logistic regressions. Survival rates were determined using the Kaplan-Meier method. Cost-effectiveness analysis was performed to assess the cost of a single vs a multifractionated treatment regimen. Results: Two hundred seventy individual lesions were treated, with the majority (97%) treated with ?700 cGy; mean follow-up was 41.3 months (range, 3-180 months). Response rate by lesion was assessed, with a complete response (CR) in 255 (94.4%) lesions, a partial response in 10 (3.7%) lesions, a partial response converted to a CR after a second treatment in 4 (1.5%) lesions, and no response in 1 (0.4%) lesion. The CR in lower extremity lesions was lower than in other sites (P=.0016). Lesions treated with photons had lower CR than those treated with electrons (P=.017). Patients with lesions exhibiting large cell transformation and tumor morphology had lower CR (P=.04 and P=.035, respectively). Immunophenotype did not impact response rate (P=.23). Overall survival was significantly lower for patients with Sézary syndrome (P=.0003) and erythroderma (P<.0001). The cost of multifractionated radiation was >200% higher than that for single-fraction radiation. Conclusions: A single fraction of 700 cGy-800 cGy provides excellent palliation for CTCL lesions and is cost effective and convenient for the patient.

Thomas, Tarita O.; Agrawal, Priya [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)] [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Guitart, Joan [Department of Dermatology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)] [Department of Dermatology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Rosen, Steven T. [Division of Hematology/Oncology, Department of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)] [Division of Hematology/Oncology, Department of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Rademaker, Alfred W. [Department of Preventive Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)] [Department of Preventive Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Querfeld, Christiane [Department of Medicine/Dermatology Service, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Medicine/Dermatology Service, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Hayes, John P. [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)] [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Kuzel, Timothy M. [Division of Hematology/Oncology, Department of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)] [Division of Hematology/Oncology, Department of Medicine, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States); Mittal, Bharat B., E-mail: bmittal@nmh.org [Department of Radiation Oncology, Northwestern University, Robert H. Lurie Comprehensive Cancer Center, Chicago, Illinois (United States)

2013-03-01T23:59:59.000Z

452

A Comparison of Multiscale Variations of Decade-long Cloud Fractions from Six Different Platforms over the Southern Great Plains in the United States  

SciTech Connect (OSTI)

This study investigates 1997-2011 observationally based cloud fraction estimates from different platforms over the Southern Great Plains, United States, including three ground-based estimates and three satellite-based estimates at multiple temporal and spatial scales. They are: 1) the Active Remotely Sensed Clouds Locations (ARSCL); 2) the Total Sky Imager (TSI); 3) the Radiative Flux Analysis (RFA); 4) Geostationary Operational Environmental Satellite (GOES); 5) the International Satellite Cloud Climatology Project (ISCCP); and 6) Advanced Very High Resolution Radiometer Pathfinder Atmospheres Extended (PATMOS-x). A substantial disagreement is evident among different estimates, especially for ISCCP and ARSCL with statistically significant larger cloud fractions than the other estimates. For example, ISCCP and ARSCL mean cloud fractions in January are ~21% and 8% larger than the average from all the other estimates, respectively. Three estimates (ISCCP, ARSCL, GOES) exhibit an 8%-10% overall increase in the annually averaged cloud fractions from 1998 to 2009; the other three estimates (TSI, RFA, and PATMOS-x) exhibit no significant tendency of increase in this decade. Monthly cloud fractions from all the estimates exhibit Gaussian-like distributions while the distributions of daily cloud fractions are dependent on spatial scales. Investigations of high-resolution cloud fractions reveal that the differences stem from the inconsistent definitions of cloud fraction. Findings from this study suggest caution when using observationally based cloud fraction estimates for climate studies, highlighting that the consistency in defining cloud fraction between models and observations is crucial for studying the Earth’s climate.

Wu, Wei; Liu, Yangang; Jensen, Michael; Toto, Tami; Foster, Michael J.; Long, Charles N.

2014-03-27T23:59:59.000Z

453

First Observation of B+ to rho+ K0 and Measurement of its Branching Fraction and Charge Asymmetry  

SciTech Connect (OSTI)

We present the first observation of the decay B{sup +} {yields} {rho}{sup +}K{sup 0}, using a data sample of 348 fb{sup -1} collected at the {Upsilon}(4S) resonance with the BABAR detector. The branching fraction and charge asymmetry are measured to be (8.0{sub -1.3}{sup +1.4} {+-} 0.5) x 10{sup -6} and (-12.2 {+-} 16.6 {+-} 2.0)%, respectively, where the first uncertainty is statistical and the second is systematic. The significance of the observed branching fraction, including systematic uncertainties, is 7.9 standard deviations.

Aubert, B.

2007-03-06T23:59:59.000Z

454

National standard and code compliance for electrical equipment installed in hazardous locations for the void fraction instrument  

SciTech Connect (OSTI)

The hazardous area classification is evaluated and defined for the void fraction instrument (VFI). The void fraction instrument is an instrument that is used to measure gas bubble concentration in tank waste. It is a 18.3 meter (60-foot) long pipe with swivel sampling head. The assembly is lowered into tank waste via an available riser and waste sample is obtained. The sample is obtained and the sample chamber is pressurized from a fixed volume chamber. The pressure is then measured and then the VFI is moved to the next sample elevation.

Bussell, J.H.; Martin, J.D.; Stokes, T.I.

1994-09-26T23:59:59.000Z

455

Bio-Oil Separation and Stabilization by Supercritical Fluid Fractionation – 2014 Final Report  

SciTech Connect (OSTI)

The objective of this project is to use supercritical fluids to separate and fractionate algal-based bio-oils into stable products that can be subsequently upgraded to produce drop-in renewable fuels. To accomplish this objective, algae was grown and thermochemically converted to bio-oils using hydrothermal liquefaction (HTL), pyrolysis, and catalytic pyrolysis. The bio-oils were separated into an extract and a raffinate using near-critical propane or carbon dioxide. The fractions were then subjected to thermal aging studies to determine if the extraction process had stabilized the products. It was found that the propane extract fraction was twice as stable as the parent catalytic pyrolysis bio-oils as measured by the change in viscosity after two weeks of accelerated aging at 80°C. Further, in-situ NMR aging studies found that the propane extract was chemically more stable than the parent bio-oil. Thus the milestone of stabilizing the product was met. A preliminary design of the extraction plant was prepared. The design was based on a depot scale plant processing 20,000,000 gallons per year of bio-oil. It was estimated that the capital costs for such a plant would be $8,700,000 with an operating cost of $3,500,000 per year. On a per gallon of product cost and a 10% annual rate of return, capital costs would represent $0.06 per gallon and operating costs would amount to $0.20 per gallon. Further, it was found that the energy required to run the process represented 6.2% of the energy available in the bio-oil, meeting the milestone of less than 20%. Life cycle analysis and greenhouse gas (GHG) emission analysis found that the energy for running the critical fluid separation process and the GHG emissions were minor compared to all the inputs to the overall well to pump system. For the well to pump system boundary, energetics in biofuel conversion are typically dominated by energy demands in the growth, dewater, and thermochemical process. Bio-oil stabilization by near critical propane extraction had minimal impact in the overall energetics of the process with NER contributions of 0.03. Based on the LCA, the overall conversion pathways were found to be energy intensive with a NER of about 2.3 and 1.2 for catalytic pyrolysis and HTL, respectively. GHG emissions for the catalytic pyrolysis process were greater than that of petroleum diesel at 210 g CO2 eq compared to 18.9 g CO2 eq. Microalgae bio-oil based diesel with thermochemical conversion through HTL meets renewable fuel standards with favorable emission reductions of -10.8 g CO2 eq. The importance of the outcomes is that the critical fluid extraction and stabilization process improved product stability and did so with minimal energy inputs and processing costs. The LCA and GHG emission calculations point toward the HTL pathway as the more favorable thermochemical route towards upgrading algae to bio-fuels. Since the quality of the HTL oil was significantly lower than that of the catalytic pyrolysis bio-oil, the next steps point toward improving the quality of the HTL oils from algae biomass and focusing the critical fluid stabilization on that bio-oil product.

Foster Agblevor; Lucia Petkovic; Edward Bennion; Jason Quinn; John Moses; Deborah Newby; Daniel Ginosar

2014-03-01T23:59:59.000Z

456

Renewed Search for FUN (Fractionated and Unidentified Nuclear Effects) in Primitive Chondrites  

SciTech Connect (OSTI)

Ca-Al-rich inclusions (CAIs) found in primitive chondrites record processes and conditions of the earliest solar system as they are the oldest known solid objects formed in the solar system [1,2]. CAIs with fractionation and unidentified nuclear anomalies (FUN CAIs; [3]) are very rare and thusfar found exclusively in CV carbonaceous chondrites (e.g., Allende and Vigarano)[4]. FUN CAIs are characterized by large nucleosynthetic anomalies in several elements (Ca, Ti, Si, Sr, Ba, Nd, and Sm), large mass-dependant isotope fractionation (Mg, Si, and O), and very little initial {sup 26}Al [4,5 and reference therein]. Formation of FUN CAIs by thermal processing of presolar dust aggregates prior to the injection of {sup 26}Al into the protoplanetary disk has been proposed. More recently [5] proposed that FUN CAIs formed from a protosolar molecular cloud after injection of {sup 26}Al but before {sup 26}Al and {sup 27}Al were completely homogenized. Therefore discovering more FUN CAIs to perform U-Pb and other short-lived chronometric dating will provide key constraints on the age of the solar system, the isotopic composition of the protosolar molecular cloud, the earliest stages of the thermal processing in the solar system and the timing of {sup 26}Al and other short-lived radionuclide injection into the nascent solar system. Most known FUN CAIs were discovered and studied > 30 yr ago, and their isotope ratios determined using thermal ionization mass spectrometry (TIMS). Most of these FUN CAIs were almost or entirely consumed during their respective analyses. [5] recently identified a new FUN CAI (NWA 779 KS-1) based on O and Mg isotope ratios determined by SIMS and MCICPMS, respectively. We have initiated a systematic search for FUN CAIs in primitive chondrites, taking advantage of the large mass-dependant Mg isotope effects known for FUN inclusions with little or no inferred {sup 26}Al. Our strategy is to use newly developed sample cells capable of holding very large slabs of meteorites for laser ablation interfaced with a multicollector inductively coupled plasma mass spectrometry (LA-MC-ICPMS) at UC Davis. Here report the initial findings of our search and describe the instrument setup we use that provides rapid throughput and accurate results.

Tollstrup, D L; Wimpenny, J B; Yin, Q -; Ebel, D S; Jacobsen, B; Hutcheon, I D

2011-04-07T23:59:59.000Z

457

Composting of the solid fraction of digestate derived from pig slurry: Biological processes and compost properties  

Science Journals Connector (OSTI)

Abstract The aim of this paper was to assess the characteristics of the solid fractions (SF) obtained by mechanical separation of digestate, their compostability and compost quality. To do so, the SF of digestates obtained from anaerobic digestion of pig slurry, energy crops and agro-industrial residues were sampled in five plants located in Northern Italy. Results obtained indicated that anaerobic digestion by itself promoted the high biological stability of biomasses with a Potential Dynamic Respiration Index (PDRI) close to 1000 mgO2 kg V S?1 h?1. Subsequent composting of digestates, with an added bulking agent, did not give remarkably different results, and led only to a slight modification of the characteristics of the initial non-composted mixtures; the composts obtained fully respected the legal limits for high quality compost. Chemical studies of organic matter composition of the biomasses by using CP MAS 13C NMR, indicated that the compost was composed of a high relative content of O-alkyl-C (71.47% of total C) (cellulose and hemicelluloses) and a low alkyl-C (12.42%) (i.e. volatile fatty acids, steroid-like molecules, aliphatic biopolymers and proteins).

Fulvia Tambone; Laura Terruzzi; Barbara Scaglia; Fabrizio Adani

2014-01-01T23:59:59.000Z

458

Stabilisation of biodried municipal solid waste fine fraction in landfill bioreactor  

Science Journals Connector (OSTI)

The biodrying process of solid waste is a pre-treatment for the bio-stabilisation of the municipal solid waste. This study aims to investigate the fate of the municipal solid waste fine fraction (MSWFF) resulting from a biodrying treatment when disposed in landfills that are operated as bioreactors. Biodried MSWFF was apparently stable due to its low moisture content that slows down the microbial activity. The lab-scale anaerobic bioreactors demonstrated that a proper moisture content leads to a complete biodegradation of the organic matter contained in the biodried MSWFF. Using a pilot-scale landfill bioreactor (LBR), MSWFF stabilisation was achieved, suggesting that the leachate recirculation could be an effective approach to accomplish the anaerobic biodegradation and biostabilisation of biodried MSWFF after landfilling. The biostabilisation of the material resulting from the LBR treatment was confirmed using anaerobic and aerobic stability indices. All anaerobic and aerobic indices showed a stability increase of approximately 80% of the MSWFF after treatment in the LBR. The similar values of OD7 and BMP stability indices well agree with the relationship between the aerobic and anaerobic indices reported in literature.

Selene Grilli; Andrea Giordano; Alessandro Spagni

2012-01-01T23:59:59.000Z

459

The dense gas mass fraction in the W51 cloud and its protoclusters  

E-Print Network [OSTI]

We present new 2 cm and 6 cm maps of H2CO, radio recombination lines, and the radio continuum in the W51 star forming complex acquired with Arecibo and the Green Bank Telescope at ~50" resolution. We use H2CO absorption to determine the relative line-of-sight positions of molecular and ionized gas. We measure gas densities using the H2CO densitometer, including continuous measurements of the dense gas mass fraction (DGMF) over the range 10^4 cm^-3 ~70% above n>10^4 cm^-3, while it is low, f 10^4 cm-3 is weakly correlated with low and moderate mass star formation, but does not strongly correlate with high-mass star formation. (3) The nondetection of H2CO emission implies that the emission detected in other galaxies, e.g. Arp 220, comes from high-density gas that is not directly affiliated with already-formed massive stars. Either the non-star-forming ISM of these galaxies is very dense, implying the star formation density threshold is higher, or H ii regions have their emission suppressed.

Ginsburg, Adam; Battersby, Cara; Youngblood, Allison; Darling, Jeremy; Rosolowsky, Erik; Arce, Hector; Santos, Mayra E Lebrón

2014-01-01T23:59:59.000Z

460

Design process of LNG heavy hydrocarbons fractionation: Low LNG temperature recovery  

Science Journals Connector (OSTI)

Abstract The liquefied natural gas (LNG) includes light hydrocarbons heavier than methane, such as ethane, propane and butane, which not only may increase the calorific values of the natural gas beyond specification limits, but also may have greater market values. During the gasification of the LNG, the energy invested in it during liquefaction process may be recovered and re-used. This paper relates to two regasification processes for separating natural gas liquids from liquefied natural gas using the low LNG temperature to produce natural gas meeting pipeline or other commercial specifications. From the two processes studied, the fractionated methane-rich stream is pressurized to pipeline pressure by pumps instead of compressors and the liquefied ethane, propane and butane are obtained directly at atmospheric pressure. Among the processes studied, the low pressure process sounds economically attractive with a saving in TAC of 4.6% over the high pressure process; however the high pressure process is more preferable for the cases where the space is limited.

Hosanna Uwitonze; Sangil Han; Choi Jangryeok; Kyu Suk Hwang

2014-01-01T23:59:59.000Z

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461

Micro-scale anaerobic digestion of point source components of organic fraction of municipal solid waste  

SciTech Connect (OSTI)

The fermentation characteristics of six specific types of the organic fraction of municipal solid waste (OFMSW) were examined, with an emphasis on properties that are needed when designing plug-flow type anaerobic bioreactors. More specifically, the decomposition patterns of a vegetable (cabbage), fruits (banana and citrus peels), fresh leaf litter of bamboo and teak leaves, and paper (newsprint) waste streams as feedstocks were studied. Individual OFMSW components were placed into nylon mesh bags and subjected to various fermentation periods (solids retention time, SRT) within the inlet of a functioning plug-flow biogas fermentor. These were removed at periodic intervals, and their composition was analyzed to monitor decomposition rates and changes in chemical composition. Components like cabbage waste, banana peels, and orange peels fermented rapidly both in a plug-flow biogas reactor (PFBR) as well as under a biological methane potential (BMP) assay, while other OFMSW components (leaf litter from bamboo and teak leaves and newsprint) fermented slowly with poor process stability and moderate biodegradation. For fruit and vegetable wastes (FVW), a rapid and efficient removal of pectins is the main cause of rapid disintegration of these feedstocks, which left behind very little compost forming residues (2-5%). Teak and bamboo leaves and newsprint decomposed only to 25-50% in 30 d. These results confirm the potential for volatile fatty acids accumulation in a PFBR's inlet and suggest a modification of the inlet zone or operation of a PFBR with the above feedstocks.

Chanakya, H.N. [Centre for Sustainable Technologies, (formerly ASTRA), Indian Institute of Science, Bangalore 560 012 (India)], E-mail: chanakya@astra.iisc.ernet.in; Sharma, Isha [Centre for Sustainable Technologies, (formerly ASTRA), Indian Institute of Science, Bangalore 560 012 (India); Ramachandra, T.V. [Centre for Sustainable Technologies, (formerly ASTRA), Indian Institute of Science, Bangalore 560 012 (India); Centre for Ecological Sciences, Indian Institute of Science, Bangalore 560 012 (India)

2009-04-15T23:59:59.000Z

462

Precision measurements of branching fractions for $ ?'\\to?^0 J?$ and $?J?$  

E-Print Network [OSTI]

We present a precision study of the $\\psip\\to\\pi^0 J/\\psi$ and $\\eta J/\\psi$ decay modes. The measurements are obtained using $106\\times10^6$ $\\psi'$ events accumulated with the BESIII detector at the BEPCII $\\ee$ collider operating at a center-of-mass energy corresponding to the $\\psip$ mass. We obtain $\\mathcal{B}(\\psip\\to\\pi^0 J/\\psi)=(1.26\\pm0.02{\\rm (stat.)}\\pm0.03{\\rm (syst.)})\\times 10^{-3}$ and $\\mathcal{B}(\\psip\\to\\eta J/\\psi)=(33.75\\pm0.17{\\rm (stat.)}\\pm0.86{\\rm (syst.)})\\times 10^{-3}$. The branching fraction ratio $R=\\frac{\\mathcal{B}(\\psip\\to\\pi^0 J/\\psi)}{\\mathcal{B}(\\psip\\to\\eta J/\\psi)}$ is determined to be $(3.74\\pm0.06 {\\rm(stat.)}\\pm0.04 {\\rm(syst.)})\\times 10^{-2}$. The precision of these measurements of $\\mathcal{B}(\\psip\\to\\pi^{0} J/\\psi)$ and $R$ represent a significant improvement over previously published values.

M. Ablikim; M. N. Achasov; O. Albayrak; D. J. Ambrose; F. F. An; Q. An; J. Z. Bai; Y. Ban; J. Becker; J. V. Bennett; M. Bertani; J. M. Bian; E. Boger O. Bondarenko; I. Boyko; R. A. Briere; V. Bytev; X. Cai; O. Cakir; A. Calcaterra; G. F. Cao; S. A. CetinB; J. F. Chang; G. Chelkov G. Chen; H. S. Chen; J. C. Chen; M. L. Chen; S. J. Chen; X. Chen; Y. B. Chen; H. P. Cheng; Y. P. Chu; F. Coccetti; D. Cronin-Hennessy; H. L. Dai; J. P. Dai; D. Dedovich; Z. Y. Deng; A. Denig; I. Denysenko M. Destefanis; W. M. Ding; Y. Ding; L. Y. Dong; M. Y. Dong; S. X. Du; J. Fang; S. S. Fang; L. Fava F. Feldbauer; C. Q. Feng; R. B. Ferroli; C. D. Fu; J. L. Fu; Y. Gao; C. Geng; K. Goetzen; W. X. Gong; W. Gradl; M. Greco; M. H. Gu; Y. T. Gu; Y. H. Guan; A. Q. Guo; L. B. Guo; Y. P. Guo; Y. L. Han; F. A. Harris; K. L. He; M. He; Z. Y. He; T. Held; Y. K. Heng; Z. L. Hou; H. M. Hu; J. F. Hu; T. Hu; G. M. Huang; G. S. Huang; J. S. Huang; X. T. Huang; Y. P. Huang; T. Hussain; C. S. Ji; Q. Ji; Q. P. Ji; X. B. Ji; X. L. Ji; L. L. Jiang; X. S. Jiang; J. B. Jiao; Z. Jiao; D. P. Jin; S. Jin; F. F. Jing; N. Kalantar-Nayestanaki; M. Kavatsyuk; M. Kornicer; W. Kuehn; W. Lai; J. S. Lange; C. H. Li; Cheng Li; Cui Li; D. M. Li; F. Li; G. Li; H. B. Li; J. C. Li; K. Li; Lei Li; Q. J. Li; S. L. Li; W. D. Li; W. G. Li; X. L. Li; X. N. Li; X. Q. Li; X. R. Li; Z. B. Li; H. Liang; Y. F. Liang; Y. T. Liang; G. R. Liao; X. T. Liao; B. J. Liu; C. L. Liu; C. X. Liu; C. Y. Liu; F. H. Liu; Fang Liu; Feng Liu; H. Liu; H. H. Liu; H. M. Liu; H. W. Liu; J. P. Liu; K. Y. Liu; Kai Liu; P. L. Liu; Q. Liu; S. B. Liu; X. Liu; Y. B. Liu; Z. A. Liu; Zhiqiang Liu; Zhiqing Liu; H. Loehner; G. R. Lu; H. J. Lu; J. G. Lu; Q. W. Lu; X. R. Lu; Y. P. Lu; C. L. Luo; M. X. Luo; T. Luo; X. L. Luo; M. Lv; C. L. Ma; F. C. Ma; H. L. Ma; Q. M. Ma; S. Ma; T. Ma; X. Y. Ma; Y. Ma; F. E. Maas; M. MaggioraA; Q. A. Malik; Y. J. Mao; Z. P. Mao; J. G. Messchendorp; J. Min; T. J. Min; R. E. Mitchell; X. H. Mo; C. Morales Morales; C. Motzko; N. Yu. Muchnoi; H. Muramatsu; Y. Nefedov; C. Nicholson; I. B. Nikolaev; Z. Ning; S. L. Olsen; Q. Ouyang; S. PacettiB; J. W. Park; M. Pelizaeus; H. P. Peng; K. Peters; J. L. Ping; R. G. Ping; R. Poling; E. Prencipe; M. Qi; S. Qian; C. F. Qiao; X. S. Qin; Y. Qin; Z. H. Qin; J. F. Qiu; K. H. Rashid; G. Rong; X. D. Ruan; A. Sarantsev; B. D. Schaefer; J. Schulze; M. Shao; C. P. Shen; X. Y. Shen; H. Y. Sheng; M. R. Shepherd; X. Y. Song; S. SpataroA B. Spruck; D. H. Sun; G. X. Sun; J. F. Sun; S. S. Sun; Y. J. Sun; Y. Z. Sun; Z. J. Sun; Z. T. Sun; C. J. Tang; X. Tang; I. TapanC; E. H. Thorndike; D. Toth; M. Ullrich; G. S. Varner; B. Wang; B. Q. Wang; D. Wang; D. Y. Wang; K. Wang; L. L. Wang; L. S. Wang; M. Wang; P. Wang; P. L. Wang; Q. Wang; Q. J. Wang; S. G. Wang; X. L. Wang; Y. D. Wang; Y. F. Wang; Y. Q. Wang; Z. Wang; Z. G. Wang; Z. Y. Wang; D. H. Wei; J. B. Wei; P. Weidenkaff; Q. G. Wen; S. P. Wen; M. Werner; U. Wiedner; L. H. Wu; N. Wu; S. X. Wu; W. Wu; Z. Wu; L. G. Xia; Z. J. Xiao; Y. G. Xie; Q. L. Xiu; G. F. Xu; G. M. Xu; H. Xu; Q. J. Xu; X. P. Xu; Z. R. Xu; F. Xue; Z. Xue; L. Yan; W. B. Yan; Y. H. Yan; H. X. Yang; Y. Yang; Y. X. Yang; H. Ye; M. Ye; M. H. Ye; B. X. Yu; C. X. Yu; H. W. Yu; J. S. Yu; S. P. Yu; C. Z. Yuan; Y. Yuan; A. A. Zafar; A. Zallo; Y. Zeng; B. X. Zhang; B. Y. Zhang; C. Zhang; C. C. Zhang; D. H. Zhang; H. H. Zhang; H. Y. Zhang; J. Q. Zhang; J. W. Zhang; J. Y. Zhang; J. Z. Zhang; S. H. Zhang; X. J. Zhang; X. Y. Zhang; Y. Zhang; Y. H. Zhang; Y. S. Zhang; Z. P. Zhang; Z. Y. Zhang; G. Zhao; H. S. Zhao; J. W. Zhao; K. X. Zhao; Lei Zhao; Ling Zhao; M. G. Zhao; Q. Zhao; Q. Z. Zhao; S. J. Zhao; T. C. Zhao; X. H. Zhao; Y. B. Zhao; Z. G. Zhao; A. Zhemchugov B. Zheng; J. P. Zheng; Y. H. Zheng; B. Zhong; J. Zhong; Z. Zhong; L. Zhou; X. K. Zhou; X. R. Zhou; C. Zhu; K. Zhu; K. J. Zhu; S. H. Zhu; X. L. Zhu; Y. C. Zhu; Y. M. Zhu; Y. S. Zhu; Z. A. Zhu; J. Zhuang; B. S. Zou; J. H. Zou

2012-10-13T23:59:59.000Z

463

LIMITS TO THE FRACTION OF HIGH-ENERGY PHOTON EMITTING GAMMA-RAY BURSTS  

SciTech Connect (OSTI)

After almost four years of operation, the two instruments on board the Fermi Gamma-ray Space Telescope have shown that the number of gamma-ray bursts (GRBs) with high-energy photon emission above 100 MeV cannot exceed roughly 9% of the total number of all such events, at least at the present detection limits. In a recent paper, we found that GRBs with photons detected in the Large Area Telescope have a surprisingly broad distribution with respect to the observed event photon number. Extrapolation of our empirical fit to numbers of photons below our previous detection limit suggests that the overall rate of such low flux events could be estimated by standard image co-adding techniques. In this case, we have taken advantage of the excellent angular resolution of the Swift mission to provide accurate reference points for 79 GRB events which have eluded any previous correlations with high-energy photons. We find a small but significant signal in the co-added field. Guided by the extrapolated power-law fit previously obtained for the number distribution of GRBs with higher fluxes, the data suggest that only a small fraction of GRBs are sources of high-energy photons.

Akerlof, Carl W.; Zheng, WeiKang, E-mail: akerlof@umich.edu [Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109-1040 (United States)] [Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109-1040 (United States)

2013-02-20T23:59:59.000Z

464

Water deuterium fractionation in the inner regions of two solar type protostars  

E-Print Network [OSTI]

The [HDO]/[H2O] ratio is a crucial parameter for probing the history of water formation. So far, it has been measured for only three solar type protostars and yielded different results, possibly pointing to a substantially different history in their formation. In the present work, we report new interferometric observations of the HDO 4 2,2 - 4 2,3 line for two solar type protostars, IRAS2A and IRAS4A, located in the NGC1333 region. In both sources, the detected HDO emission originates from a central compact unresolved region. Comparison with previously published interferometric observations of the H218$O 3 1,3 - 2 2,0 line shows that the HDO and H$_2$O lines mostly come from the same region. A non-LTE LVG analysis of the HDO and H218$O line emissions, combined with published observations, provides a [HDO]/[H2O] ratio of 0.3 - 8 % in IRAS2A and 0.5 - 3 % in IRAS4A. First, the water fractionation is lower than that of other molecules such as formaldehyde and methanol in the same sources. Second, it is similar t...

Taquet, Vianney; Ceccarelli, Cecilia; Neri, Roberto; Kahane, Claudine; Coutens, Audrey; Vastel, Charlotte

2013-01-01T23:59:59.000Z

465

Shock-Wave Heating Model for Chondrule Formation: Prevention of Isotopic Fractionation  

E-Print Network [OSTI]

Chondrules are considered to have much information on dust particles and processes in the solar nebula. It is naturally expected that protoplanetary disks observed in present star forming regions have similar dust particles and processes, so study of chondrule formation may provide us great information on the formation of the planetary systems. Evaporation during chondrule melting may have resulted in depletion of volatile elements in chondrules. However, no evidence for a large degree of heavy-isotope enrichment has been reported in chondrules. In order to meet this observed constraint, the rapid heating rate at temperatures below the silicate solidus is required to suppress the isotopic fractionation. We have developed a new shock-wave heating model taking into account the radiative transfer of the dust thermal continuum emission and the line emission of gas molecules and calculated the thermal history of chondrules. We have found that optically-thin shock waves for the thermal continuum emission from dust particles can meet the rapid heating constraint, because the dust thermal emission does not keep the dust particles high temperature for a long time in the pre-shock region and dust particles are abruptly heated by the gas drag heating in the post-shock region. We have also derived the upper limit of optical depth of the pre-shock region using the radiative diffusion approximation, above which the rapid heating constraint is not satisfied. It is about 1 - 10.

Hitoshi Miura; Taishi Nakamoto

2006-07-03T23:59:59.000Z

466

Measurement of the branching fraction for $\\tau\\to\\eta K\  

SciTech Connect (OSTI)

The authors report on analyses of tau lepton decays {tau}{sup -} {yields} {eta}K{sup -}{nu}{sub {tau}} and {tau}{sup -} {yields} {eta}{pi}{sup -}{nu}{sub {tau}}, with {eta} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup 0}, using 470 fb{sup -1} of data from the BABAR experiment at PEP-II, collected at center-of-mass energies at and near the {Upsilon}(4S) resonance. They measure the branching fraction for the {tau}{sup -} {yields} {eta}K{sup -}{nu}{sub {tau}} decay mode, {Beta}({tau}{sup -} {yields} {eta}K{sup -}{nu}{sub {tau}}) = (1.42 {+-} 0.11(stat) {+-} 0.07(syst)) x 10{sup -4}, and report a 95% confidence level upper limit for the second-class current process {tau}{sup -} {yields} {eta}{pi}{sup -}{nu}{sub {tau}}, {Beta}({tau}{sup -} {yields} {eta}{pi}{sup -}{nu}{sub {tau}}) < 9.9 x 10{sup -5}.

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

2011-08-12T23:59:59.000Z

467

Acoustic Monitor for Liquid-Solid Slurries Measurements at Low Weight Fractions  

SciTech Connect (OSTI)

Our effort in this project is to develop an acoustic monitor for accurate, real-time characterization of the size and weight fractions of solids in slurries for process monitoring and to determine the optimal timing for slurry transfers. This capability will be valuable in the Savannah River Site accelerated clean-up program. Our scientific work during the first research period developed a theory, supported by experiments, to describe sound attenuation of solids in suspensions in the presence of bubbles, which permits us to determine the solid-liquid weight percent. Engineering developments during the second research period led to the design, construction, and demonstration, in our laboratories, of the Syracuse Acoustic Monitor (SAM) system that measures weight percent solids accurately in slurries of 0.5 to 8.0 weight percent on-line and in real-time. Also, we had shown the potential for these measurements in solid-gas-liquid slurries by removing the interference due to the presence of gas bubbles.

Taviarides, Lawrence L.

2005-06-01T23:59:59.000Z

468

Isotopic fractionation of carbon, deuterium and nitrogen : a full chemical study  

E-Print Network [OSTI]

Context. The increased sensitivity and high spectral resolution of millimeter telescopes allow the detection of an increasing number of isotopically substituted molecules in the interstellar medium. The 14N/ 15N ratio is difficult to measure directly for carbon containing molecules. Aims. We want to check the underlying hypothesis that the 13C/ 12C ratio of nitriles and isonitriles is equal to the elemental value via a chemical time dependent gas phase chemical model. Methods. We have built a chemical network containing D, 13C and 15N molecular species after a careful check of the possible fractionation reactions at work in the gas phase. Results. Model results obtained for 2 different physical conditions corresponding respectively to a moderately dense cloud in an early evolutionary stage and a dense depleted pre-stellar core tend to show that ammonia and its singly deuterated form are somewhat enriched in 15N, in agreement with observations. The 14N/ 15N ratio in N2H+ is found to be close to the elemental v...

Roueff, E; Hickson, K M

2015-01-01T23:59:59.000Z

469

TRIFID (TRansuranic Isotopic Fraction Interrogation Device): A second generation plutonium isotopic analysis system  

SciTech Connect (OSTI)

The TRIFID (Transuranic Isotopic Fraction Interrogation Device) system is a second generation plutonium isotopic analysis system which incorporates many new and unique features in the area of isotopic data acquisition and isotopic analysis instrument consisting of a Canberra Series 95-MCA interfaced to a Compaq 386 computer. The entire TRIFID software package, including MCA communications and isotopic analysis routines, was developed using the C programming language. Extensive use has been made of user friendly screens and menus for ease of operation and training and to facilitate use by technical level operators. Automated TRIFID features provide for MCA/ADC setup and acquisition, spectral storage, isotopic analysis, and report generation. One unique feature of the TRIFID system design allows it to be pre-programed for an entire day's counting. The isotopic analysis module (EPICS) contains an expert system formalism which is used to detect and assay for spectral interferences, and to automatically adjust peak fitting constraints based on spectral intensity variations. A TRIFID system has been in operation in a production laboratory at the Rocky Flats Plant since September 1988. Marked decreases in training and hands-on operation time have been achieved in comparison to the older, preceding isotopic systems. 2 refs., 3 figs.

Fleissner, J G; Coressel, T W; Freier, D A; Macklin, L L

1989-01-01T23:59:59.000Z

470

Microcarbon residue yield and heteroatom partitioning between volatiles and solids for whole vacuum resids and their liquid chromatographic fractions  

SciTech Connect (OSTI)

Five petroleum >1000{degrees}F resids were separated into compound type fractions using liquid chromatography. The coking tendency of each compound type was assessed using the microcarbon residue (MCR) test (ASTM D 4530). Heteroatom (N, S, Ni, V) partitioning between MCR solids versus volatiles was determined through analysis of the starting fractions and the corresponding MCR solids. The weighted sum of MCR solid yields over all compound types in a given resid was typically in good agreement with the MCR yield of the whole resid. This finding agrees with prior studies indicating coke yield to be an additive property. Sulfur partitioning was also an additive property, was predictable from MCR yield, and was nearly independent of the initial form (sulfide, thiophenic, sulfoxide) present. Nitrogen and nickel partitioning were nonadditive and therefore composition dependent. Partitioning of vanadium into solids was essentially quantitative for all resids and their fractions. MCR solid yield was generally dependent only on H/C ratio. However, there is some evidence indicating secondary dependence on hydrocarbon structure; i.e., that naphthenic rings reduce MCR in proportion to H/C by virtue of their effective hydrogen transfer properties. Deposition of N and Ni into MCR solids over the fractions was often appreciably less than that of the whole resids, thereby indicating that interaction among various compound types was required for maximum incorporation of those elements into coke.

Green, J.B.; Shay, J.Y.; Reynolds, J.W.; Green, J.A.; Young, L.L.; White, M.E.

1993-10-01T23:59:59.000Z

471

Use of Microemulsion Systems in the Solubilization of Petroleum Heavy Fractions for the Prevention of Oil Sludge Waste Formation  

Science Journals Connector (OSTI)

Use of Microemulsion Systems in the Solubilization of Petroleum Heavy Fractions for the Prevention of Oil Sludge Waste Formation† ... In the present paper we studied eight model particles coated with asphaltenes from different oils in order to mimic the wettability changes and behavior in water after contact with oil. ...

Tereza Neuma de Castro Dantas; Afonso Avelino Dantas Neto; Ca?tia Guaraciara F. T. Rossi; Diego A?ngelo de Arau?jo Gomes; Alexandre Gurgel

2009-12-30T23:59:59.000Z

472

Topological order and magnetic flux fractionalization in Josephson junction ladders with Mobius boundary conditions: a twisted CFT description  

E-Print Network [OSTI]

We propose a CFT description for a closed one-dimensional fully frustrated ladder of quantum Josephson junctions with Mobius boundary conditions (see cond-mat/0503555; we show how such a system can develop topological order thanks to flux fractionalization. Such a property is crucial for its implementation as a "protected" solid state qubit.

Gerardo Cristofano; Vincenzo Marotta; Adele Naddeo; Giuliano Niccoli

2005-07-25T23:59:59.000Z

473

Non-equilibrium and local detection of the normal fraction of a trapped two-dimensional Bose gas  

E-Print Network [OSTI]

-dimensional Bose gas, a quantity that generally differs from the Bose-Einstein condensed fraction. The idea-Einstein condensation [7]. A possibil- ity explored in [8] is to look at the response of a gas in a toroidal trap for atomic samples, as the superfluid core co-exists with an external ring of normal gas [10]. In p

474

Measurement of the Branching fraction ratio B ---> D K / B ---> D pi with the CDF II detector  

SciTech Connect (OSTI)

In this thesis the author has described the first measurement performed at a hadron collider of the branching fraction of the Cabibbo-suppressed mode B{sup +} {yields} {bar D}{sup 0} K{sup +}. The analysis has been performed with 360 pb{sup -1} of data collected by the CDF II detector.

Squillacioti, Paola; /INFN, Pisa /Siena U.

2006-11-01T23:59:59.000Z

475

Ni Sorption/Release on Soil Clay Fractions A Kinetic and EXAFS Study D. R. Roberts, and A. M. Scheidegger  

E-Print Network [OSTI]

Ni Sorption/Release on Soil Clay Fractions A Kinetic and EXAFS Study D. R. Roberts, and A. M is necessary to successfully determine their fate in the environment. Mechanisms of metal sorption reactions approach. However, it is necessary to understand metal sorption mechanisms on natural, mixed systems

Sparks, Donald L.

476

REDUCTION OF VIBRATION-INDUCED ARTIFACTS IN SYNTHETIC-APERTURE-RADAR IMAGERY USING THE FRACTIONAL FOURIER TRANSFORM  

E-Print Network [OSTI]

REDUCTION OF VIBRATION-INDUCED ARTIFACTS IN SYNTHETIC-APERTURE-RADAR IMAGERY USING THE FRACTIONAL of objects exhibit- ing low-level vibrations are accompanied by localized arti- facts, or ghost targets to the non-stationary nature of the returned signals from vibrating objects. Re- cently, a method based

Santhanam, Balu

477

Locoregional Outcomes of Inflammatory Breast Cancer Patients Treated With Standard Fractionation Radiation and Daily Skin Bolus in the Taxane Era  

SciTech Connect (OSTI)

Purpose: To assess locoregional outcomes of inflammatory breast cancer (IBC) patients who received standard fractionation radiation with daily skin bolus and taxanes as part of combined-modality therapy (CMT). Methods and Materials: We retrospectively reviewed the charts of 107 patients diagnosed with IBC between January 1995 and March 2006 who presented to our department for adjuvant radiation therapy (RT). Results: All patients received chemotherapy (95% anthracycline and 95% taxane), modified radical mastectomy, and RT to the chest wall and regional lymphatics using standard fractionation to 50 Gy and daily skin bolus. The RT to the chest wall was delivered via electrons (55%) or photons (45%) in daily fractions of 180 cGy (73%) or 200 cGy (27%). Scar boost was performed in 11%. A majority (84%) of patients completed the prescribed treatment. Median follow-up was 47 months (range, 10-134 months). Locoregional control (LRC) at 3 years and 5 years was 90% and 87%, respectively. Distant metastases-free survival (DMFS) at 3 years and 5 years was 61% and 47%, respectively. Conclusions: Excellent locoregional control was observed in this population of IBC patients who received standard fractionation radiation with daily skin bolus and taxanes as part of combined-modality therapy. Distant metastases-free survival remains a significant therapeutic challenge.

Damast, Shari, E-mail: damasts@mskcc.or [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Ho, Alice Y. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Montgomery, Leslie [Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Fornier, Monica N. [Department of Breast Cancer Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Ishill, Nicole; Elkin, Elena [Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY (United States); Beal, Kathryn; McCormick, Beryl [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY (United States)

2010-07-15T23:59:59.000Z

478

ARM: Gridded (0.25 x 0.25 lat/lon) fractional cloud cover, clear-sky and all-sky shortwave flux over the SGP site.  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Gridded (0.25 x 0.25 lat/lon) fractional cloud cover, clear-sky and all-sky shortwave flux over the SGP site.

Gaustad, Krista; Gaustad, Krista; McFarlane, Sally; McFarlane, Sally

479

First measurement of the ratio of branching fractions B(?b0??c+?-?¯?)/B(?b0??c+?-)  

Science Journals Connector (OSTI)

This article presents the first measurement of the ratio of branching fractions B(?b0??c+?-?¯?)/B(?b0??c+?-). Measurements in two control samples using the same technique B(B¯0?D+?-?¯?)/B(B¯0?D+?-) and B(B¯0?D*(2010)+?-?¯?)/B(B¯0?D*(2010)+?-) are also reported. The analysis uses data from an integrated luminosity of approximately 172??pb-1 of pp¯ collisions at s=1.96??TeV, collected with the CDF II detector at the Fermilab Tevatron. The relative branching fractions are measured to be B(?b0??c+?-?¯?)B(?b0??c+?-)=16.6±3.0(stat)±1.0(syst)+2.6-3.4(PDG)±0.3(EBR), B(B¯0?D+?-?¯?)B(B¯0?D+?-)=9.9±1.0(stat)±0.6(syst)±0.4(PDG)±0.5(EBR), and B(B¯0?D*(2010)+?-?¯?)B(B¯0?D*(2010)+?-)=16.5±2.3(stat)±0.6(syst)±0.5(PDG)±0.8(EBR). The uncertainties are from statistics (stat), internal systematics (syst), world averages of measurements published by the Particle Data Group or subsidiary measurements in this analysis (PDG), and unmeasured branching fractions estimated from theory (EBR), respectively. This article also presents measurements of the branching fractions of four new ?b0 semileptonic decays: ?b0??c(2595)+?-?¯?, ?b0??c(2625)+?-?¯?, ?b0??c(2455)0?+?-?¯?, and ?b0??c(2455)++?-?-?¯?, relative to the branching fraction of the ?b0??c+?-?¯? decay. Finally, the transverse-momentum distribution of ?b0 baryons produced in pp¯ collisions is measured and found to be significantly different from that of B¯0 mesons, which results in a modification in the production cross-section ratio ??b0/?B¯0 with respect to the CDF I measurement.

T. Aaltonen et al. (CDF Collaboration)

2009-02-06T23:59:59.000Z

480

Thank you for your interest in the Eagle Ambassador program! We are excited to begin the selection process for our 2014-2015 staff. The Eagle Ambassadors introduce more than 20,000 prospective students, parents and  

E-Print Network [OSTI]

the selection process for our 2014-2015 staff. The Eagle Ambassadors introduce more than 20,000 prospective for the daily operation of the Eagle Student Service Center Campus Tour and Information Desk, assisting group receive valuable training and develop skills in problem solving, team building, interpersonal

Mohanty, Saraju P.

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481

Toward Dose Optimization for Fractionated Stereotactic Radiotherapy for Acoustic Neuromas: Comparison of Two Dose Cohorts  

SciTech Connect (OSTI)

Purpose: To describe our initial experience of fractionated stereotactic radiotherapy dose reduction comparing two dose cohorts with examination of tumor control rates and serviceable hearing preservation rates. Methods and Materials: After institutional review board approval, we initiated a retrospective chart review to study the hearing outcomes and tumor control rates. All data were entered into a JMP, version 7.01, statistical spreadsheet for analysis. Results: A total of 89 patients with serviceable hearing had complete serial audiometric data available for analysis. The higher dose cohort included 43 patients treated to 50.4 Gy with a median follow-up (latest audiogram) of 53 weeks and the lower dose cohort included 46 patients treated to 46.8 Gy with a median follow-up of 65 weeks. The tumor control rate was 100% in both cohorts, and the pure tone average was significantly improved in the low-dose cohort (33 dB vs. 40 dB, p = 0.023, chi-square). When the patient data were analyzed at comparable follow-up points, the actuarial hearing preservation rate was significantly longer for the low-dose cohort than for the high-dose cohort (165 weeks vs. 79 weeks, p = .0318, log-rank). Multivariate analysis revealed the dose cohort (p = 0.0282) and pretreatment Gardner-Robertson class (p = 0.0215) to be highly significant variables affecting the hearing outcome. Conclusion: A lower total dose at 46.8 Gy was associated with a 100% local control tumor rate and a greater hearing preservation rate. An additional dose reduction is justified to achieve the optimal dose that will yield the greatest hearing preservation rate without compromising tumor control for these patients.

Andrews, David W. [Department of Neurologic Surgery, Thomas Jefferson University (United States)], E-mail: david.andrews@jefferson.edu; Werner-Wasik, Maria; Den, Robert B. [Department of Radiation Oncology, Thomas Jefferson University (United States); Paek, Sun Ha [Department of Neurosurgery, Seoul National University (Korea, Republic of); Downes-Phillips, Beverly [Department of Neurologic Surgery, Thomas Jefferson University (United States); Willcox, Thomas O. [Department of Otolaryngology, Head and Neck Surgery, Thomas Jefferson University (United States); Bednarz, Greg; Maltenfort, Mitchel; Evans, James J. [Department of Neurologic Surgery, Thomas Jefferson University (United States); Curran, Walter J. [Department of Radiation Oncology, Thomas Jefferson University (United States)

2009-06-01T23:59:59.000Z

482

doi:10.1016/j.gca.2004.12.011 Stable boron isotope fractionation between dissolved B(OH)3 and B(OH)4  

E-Print Network [OSTI]

doi:10.1016/j.gca.2004.12.011 Stable boron isotope fractionation between dissolved B(OH)3 and B; accepted in revised form December 23, 2004) Abstract--The stable boron isotope ratio (11 B/10 B) in marine not provide a constraint on stable boron isotope fractionation. I conclude that in order to anchor

Zeebe, Richard E.

483

Actions of Mycobacterium sp. Strain AP1 on the Saturated- and Aromatic-Hydrocarbon Fractions of Fuel Oil in a Marine Medium  

Science Journals Connector (OSTI)

...Aromatic-Hydrocarbon Fractions of Fuel Oil in a Marine Medium Published ahead...Biodegradation of TPHs of fuel oil by Mycobacterium sp. strain AP1 in marine medium. Strain AP1...aromatic-hydrocarbon fractions of fuel oil in a marine medium. | The pyrene-degrading...

Joaquim Vila; Magdalena Grifoll

2009-08-07T23:59:59.000Z

484

Deconfined fractional electric charges in graphene at high magnetic fields Chang-Yu Hou,1 Claudio Chamon,1 and Christopher Mudry2  

E-Print Network [OSTI]

Deconfined fractional electric charges in graphene at high magnetic fields Chang-Yu Hou,1 Claudio The resistance at the charge neutral Dirac point was shown by Checkelsky et al. Phys. Rev. B 79, 115434 2009.43. f I. INTRODUCTION The elementary excitations in the fractional quantum Hall FQH effect carry

485

Some chemical kinetics issues in reburning: The branching fraction of the HCCO + NO Reaction  

SciTech Connect (OSTI)

The authors have determined theoretically some critical kinetic parameters in the mechanism of NOx reburning under flow-reactor conditions. Specifically, using a variety of electronic structure methods to investigate the potential energy surfaces and the maximum free energy method of Quack and Troe to determine the resulting rate coefficients, they have deduced the values of k{sub 2} and k{sub 3} for the reactions, HCNO+O {leftrightarrow} HCO+NO (R2) and HCNO + OH {leftrightarrow} HCOH + NO, (R3) to be k{sub 2} {approx} 7 x 10{sup 13} cm{sup 3}/mole-sec. and k{sub 3} {approx} 2 x 10{sup 13} cm{sup 3}/mole-sec. independent of temperature for 300 K < T < 2,700 K. With such fast reactions converting HCNO to NO, a critical parameter in the reburn mechanism is {alpha}(T) = k{sub 1b}(T)/k{sub 1}(T), the branching fraction of the HCCO + NO reaction, HCCO + NO {leftrightarrow} HCNO+CO (R1a); HCCO + NO {leftrightarrow} HCN + CO{sub 2} (R1b); HCCO + NO {leftrightarrow} HONC + CO (R1c). Again using PES information from a variety of electronic-structure methods, the authors have used the statistical-theoretical methodology of Miller, Parrish, and Brown to determine {alpha} (T) = 0.985 exp({minus}T/1,748), valid for 300 K < T < 2,000 K. Using a value of k{sub 1} = k{sub 1a} + k{sub 1b} + k{sub 1c} = 2.4 x 10{sup 13} cm{sup 3}/mole-sec. independent of temperature (consistent with experiment) they have determined modified Arrhenius expressions for k{sub 1a} and k{sub 1b}, k{sub 1a} = 1.17 x 10{sup 13} T{sup 0.65} cm{sup 3}/mole-sec. and k{sub 1b} = 1.45 x 10{sup 16} T{sup {minus}0.968} exp({minus}648/RT) cm{sup 3}/mole-sec for 300 K < T < 2,000 K. Reaction (R1c) never contributes as much as 1% to the total rate coefficient. The theoretical analyses and the reburn mechanism are discussed in detail.

Miller, J.A.; Durant, J.L. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility; Glarborg, P. [Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Chemical Engineering

1998-03-01T23:59:59.000Z

486

A new approach for simultaneously retrieving cloud albedo and cloud fraction from surface-based shortwave radiation measurements  

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

ENVIRONMENTAL ENVIRONMENTAL RESEARCH LETTERS Environ. Res. Lett. 8 (2013) 044023 (9pp) doi:10.1088/1748-9326/8/4/044023 A new approach for simultaneously retrieving cloud albedo and cloud fraction from surface-based shortwave radiation measurements Yu Xie and Yangang Liu Environmental Sciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA E-mail: yxie@bnl.gov Received 27 June 2013 Accepted for publication 8 October 2013 Published 30 October 2013 Online at stacks.iop.org/ERL/8/044023 Abstract Surface-based measurements of shortwave (SW) radiative fluxes contain valuable information on cloud properties, but have not been fully used to infer those properties. Here a new analytical approach is presented that simultaneously infers cloud albedo and cloud fraction from surface-based measurements of total and direct radiative fluxes. An inspection of the

487

Progress report for the enhancement of Radcalc: Isotope database, gamma absorption fractions, and G(H{sub 2}) values  

SciTech Connect (OSTI)

Radcalc is a spreadsheet currently used to calculate the generation of hydrogen gas in low-level radioactive waste containers for purposes of transportation and packaging. Radcalc is being enlarged and expanded. It will be offered as a Windows compatible software and will include some of the following enhancements: extended radionuclide library, updated gamma absorption fractions for an increased number of packages, inclusion of a G(H{sub 2}) value data base, updated transportation information, thermal and pressure calculation update, testing and benchmarking. This report discusses the progress made on the new Radcalc program. It presents the new radionuclide library, the results of the gamma absorption fractions for the increased number of packages, and an extensive review of G(H{sub 2}) values.

Green, J.R.

1994-09-28T23:59:59.000Z

488

Topology and interactions in a frustrated slab: tuning from Weyl semi-metal to ${\\cal C}>1$ fractional Chern insulators  

E-Print Network [OSTI]

We show that, quite generically, a [111] slab of spin-orbit coupled pyrochlore lattice exhibits surface states whose constant energy curves take the shape of Fermi arcs, localized to different surfaces depending on their quasi-momentum. Remarkably, these persist independently of the existence of Weyl points in the bulk. Considering interacting electrons in slabs of finite thickness, we find a plethora of known fractional Chern insulating phases, to which we add the discovery of a new higher Chern number state which is likely a generalization of the Moore-Read fermionic fractional quantum Hall state. By contrast, in the three-dimensional limit, we argue for the absence of gapped states of the flat surface band due to a topologically protected coupling of the surface to gapless states in the bulk. We comment on generalizations as well as experimental perspectives in thin slabs of pyrochlore iridates.