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1

Principal elements of Ozark uplift during the Pennsylvanian  

SciTech Connect (OSTI)

The Pennsylvanian history of the Ozark uplift is complex, reflecting major late Mississippian or earliest Pennsylvanian reactivation along prominent NW-trending tectonic zones (TZ), followed by regional baseleveling, repeated phases of regional uplift, and a number of lesser episodes of reactivation along principal tectonic zones and intra-zonal faults. Pre-Pennsylvanian baseleveling resulted in a complex paleogeologic substrate. During the Pennsylvanian, movement along principal tectonic zones defined large elements of Ozark uplift provisionally identified as Trans-Ozark arc; Northeast Missouri graben; Lincoln fold system; St. Francis Mtn. core; and Tri-State platform, incorporating both Spavinaw arch and Arkansas-Missouri shelf/platform. The suggested definitions and nomenclature follow an important concept developed by Searight and Searight (1961) in a little-publicized paper. Lincoln fold system may reflect a tectonic zone with its extension to the southeast offset along Cap-Au-Gres fault. Mississippi River arch served to link the obliquely-faulted northeastern area of the uplift with southwestern elements of Wisconsin uplift. Spavinaw arch, including Seneca fault zone along its axis, is associated with and may in fact dominate the Tri-State platform. Both became clearly defined during early( ) Atokan time and served to define an eastern boundary of early Desmoinesian Cherokee basin. Miami Trough, reflecting a significant NE-trending TZ, bounds Tri-State platform to the west-northwest. Trans-Ozark arch, a horst-dominated feature including the area between Bolivar-Mansfield TZ and Grand River TZ, incorporates Central Missouri TZ as the most important of several associated features. Regional expression of elements of Ozark uplift changed during Pennsylvanian time in the course of successive TR events coupled with the influence of continuing tectonic activity.

Howe, W.B. (Univ. of Missouri, Rolla, MO (United States))

1993-03-01T23:59:59.000Z

2

Multivariate analysis of remote LIBS spectra using partial least squares, principal component analysis, and related techniques  

SciTech Connect (OSTI)

Quantitative analysis with LIBS traditionally employs calibration curves that are complicated by the chemical matrix effects. These chemical matrix effects influence the LIBS plasma and the ratio of elemental composition to elemental emission line intensity. Consequently, LIBS calibration typically requires a priori knowledge of the unknown, in order for a series of calibration standards similar to the unknown to be employed. In this paper, three new Multivariate Analysis (MV A) techniques are employed to analyze the LIBS spectra of 18 disparate igneous and highly-metamorphosed rock samples. Partial Least Squares (PLS) analysis is used to generate a calibration model from which unknown samples can be analyzed. Principal Components Analysis (PCA) and Soft Independent Modeling of Class Analogy (SIMCA) are employed to generate a model and predict the rock type of the samples. These MV A techniques appear to exploit the matrix effects associated with the chemistries of these 18 samples.

Clegg, Samuel M [Los Alamos National Laboratory; Barefield, James E [Los Alamos National Laboratory; Wiens, Roger C [Los Alamos National Laboratory; Sklute, Elizabeth [MT HOLYOKE COLLEGE; Dyare, Melinda D [MT HOLYOKE COLLEGE

2008-01-01T23:59:59.000Z

3

Chemical Investigations of Superheavy Elements - Current Results and New Techniques  

SciTech Connect (OSTI)

Chemical studies of the superheavy elements have progressed tremendously in recent years. This is illustrated here using the following four examples: (i) gas chemical studies of element 112, (ii) radiochemical investigations of the reaction 248Cm(26Mg,xn)274-xHs, (iii) complexation studies of rutherfordium, and (iv) the development of the technique of physical preseparation.

Duellmann, Christoph E. [Gesellschaft fuer Schwerionenforschung mbH, Planckstrasse 1, 64291 Darmstadt (Germany)

2007-02-26T23:59:59.000Z

4

Statistical techniques applied to aerial radiometric surveys (STAARS): principal components analysis user's manual. [NURE program  

SciTech Connect (OSTI)

A Principal Components Analysis (PCA) has been written to aid in the interpretation of multivariate aerial radiometric data collected by the US Department of Energy (DOE) under the National Uranium Resource Evaluation (NURE) program. The variations exhibited by these data have been reduced and classified into a number of linear combinations by using the PCA program. The PCA program then generates histograms and outlier maps of the individual variates. Black and white plots can be made on a Calcomp plotter by the application of follow-up programs. All programs referred to in this guide were written for a DEC-10. From this analysis a geologist may begin to interpret the data structure. Insight into geological processes underlying the data may be obtained.

Koch, C.D.; Pirkle, F.L.; Schmidt, J.S.

1981-01-01T23:59:59.000Z

5

Evaluation of new techniques for two dimensional finite element analysis of woven composites  

E-Print Network [OSTI]

EVALUATION OF NEW TECHNIQUES FOR TWO DIMENSIONAL FINITE ELEMENT ANALYSIS OF WOVEN COMPOSITES A Thesis by SITARAM CHOWDARY GUNDAPANENI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE DECEMBER 1992 Major Subject: Aerospace Engineering EVALUATION OF NEW TECHNIQUES FOR TWO DIMENSIONAL FINITE ELEMENT ANALYSIS OF WOVEN COMPOSITES A Thesis by SITARAM CHOWDARY GUNDAPANENI Approved...

Gundapaneni, Sitaram Chowdary

1992-01-01T23:59:59.000Z

6

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

E-Print Network [OSTI]

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

Wang, Yaqi

2010-01-16T23:59:59.000Z

7

Adaptive Finite Element Modeling Techniques for the Poisson-Boltzmann Equation  

E-Print Network [OSTI]

We develop an efficient and reliable adaptive finite element method (AFEM) for the nonlinear Poisson-Boltzmann equation (PBE). We first examine the regularization technique of Chen, Holst, and Xu; this technique made possible the first a priori pointwise estimates and the first complete solution and approximation theory for the Poisson-Boltzmann equation. It also made possible the first provably convergent discretization of the PBE, and allowed for the development of a provably convergent AFEM for the PBE. However, in practice the regularization turns out to be numerically ill-conditioned. In this article, we examine a second regularization, and establish a number of basic results to ensure that the new approach produces the same mathematical advantages of the original regularization, without the ill-conditioning property. We then design an AFEM scheme based on the new regularized problem, and show that the resulting AFEM scheme is accurate and reliable, by proving a contraction result for the error. This result, which is one of the first results of this type for nonlinear elliptic problems, is based on using continuous and discrete a priori pointwise estimates to establish quasi-orthogonality. To provide a high-quality geometric model as input to the AFEM algorithm, we also describe a class of feature-preserving adaptive mesh generation algorithms designed specifically for constructing meshes of biomolecular structures, based on the intrinsic local structure tensor of the molecular surface. The stability advantages of the new regularization are demonstrated using an FETK-based implementation, through comparisons with the original regularization approach for a model problem. The convergence and accuracy of the overall AFEM algorithm is also illustrated by numerical approximation of electrostatic solvation energy for an insulin protein.

Michael Holst; James Andrew McCammon; Zeyun Yu; Yongcheng Zhou; Yunrong Zhu

2010-09-30T23:59:59.000Z

8

Non destructive multi elemental analysis using prompt gamma neutron activation analysis techniques: Preliminary results for concrete sample  

SciTech Connect (OSTI)

In this study, principle of prompt gamma neutron activation analysis has been used as a technique to determine the elements in the sample. The system consists of collimated isotopic neutron source, Cf-252 with HPGe detector and Multichannel Analysis (MCA). Concrete with size of 10×10×10 cm{sup 3} and 15×15×15 cm{sup 3} were analysed as sample. When neutrons enter and interact with elements in the concrete, the neutron capture reaction will occur and produce characteristic prompt gamma ray of the elements. The preliminary result of this study demonstrate the major element in the concrete was determined such as Si, Mg, Ca, Al, Fe and H as well as others element, such as Cl by analysis the gamma ray lines respectively. The results obtained were compared with NAA and XRF techniques as a part of reference and validation. The potential and the capability of neutron induced prompt gamma as tool for multi elemental analysis qualitatively to identify the elements present in the concrete sample discussed.

Dahing, Lahasen Normanshah [School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia and Malaysian Nuclear Agency (Nuklear Malaysia), Bangi 43000, Kajang (Malaysia); Yahya, Redzuan [School of Applied Physics, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor (Malaysia); Yahya, Roslan; Hassan, Hearie [Malaysian Nuclear Agency (Nuklear Malaysia), Bangi 43000, Kajang (Malaysia)

2014-09-03T23:59:59.000Z

9

Remedial Investigation/Feasibility Study (RI/FS) process, elements and techniques guidance  

SciTech Connect (OSTI)

This manual provides detailed guidance on Remedial Investigation/Feasibility Studies (RI/FSs) conducted pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) at Department of Energy (DOE) facilities. The purpose of the RI/FS, to assess the risk posed by a hazardous waste site and to determine the best way to reduce that risk, and its structure (site characterization, risk assessment, screening and detailed analysis of alternatives, etc.) is defined in the National Oil and Hazardous Substances Pollution Contingency Plan (NCP) and further explained in the Environmental Protection Agency`s (EPA`s) Guidance for Conducting Remedial Investigations and Feasibility Studies Under CERCLA (Interim Final) 540/G-89/004, OSWER Directive 9355.3-01, October 1988. Though issued in 1988, the EPA guidance remains an excellent source of information on the conduct and structure of an RI/FS. This document makes use of supplemental RI/FS-related guidance that EPA has developed since its initial document was issued in 1988, incorporates practical lessons learned in more than 12 years of experience in CERCLA hazardous site remediation, and drawing on those lessons, introduces the Streamlined Approach For Environmental Restoration (SAFER), developed by DOE as a way to proceed quickly and efficiently through the RI/FS process at DOE facilities. Thus as its title implies, this guidance is intended to describe in detail the process and component elements of an RI/FS, as well as techniques to manage the RI/FS effectively.

Not Available

1993-12-01T23:59:59.000Z

10

Test plan for techniques to measure and remove coatings from K West Basin fuel elements  

SciTech Connect (OSTI)

Several types of coatings have previously been visually identified on the surface of 105-K East and 105-K West Basins fuel elements. One type of coating (found only in K West Basin) in particular was found to be a thick translucent material that was often seen to be dislodged from the elements as flakes when the elements were handled during visual examinations (Pitner 1997). Subsequently it was determined (for one element only in a hot cell) that this material, in the dry condition, could easily be removed from the element using a scraping tool. The coating was identified as Al(OH){sub 3} through X-ray diffraction (XRD) analyses and to be approximately 60 {micro}m thick via scanning electron microscopy (SEM). However, brushing under water in the basin using numerous mechanical strokes failed to satisfactorily remove these coatings in their thickest form as judged by appearance. Such brushing was done with only one type of metal brush, a brush design previously found satisfactory for removing UO{sub 4}.xH{sub 2}O coatings from the elements.

Bridges, A.E.

1998-06-17T23:59:59.000Z

11

Numerical solution of 2-D nonlinear inverse heat conduction problems using finite-element techniques  

SciTech Connect (OSTI)

A general method is presented for solving different classes of nonlinear inverse heat conduction problems (IHCP) for two-dimensional, arbitrarily shaped bodies. It is based on the systematic use of a finite-element library. It is shown that, following this approach, the conjugate gradient method can be easily implemented. The method offers a very wide field of practical applications in inverse thermal analysis, while reducing very significantly the amount of work which remains specific for each particular IHPC. Two numerical experiments illustrate the influence of data errors and the iterative regularization principle.

Khachfe, R.A.; Jarny, Y.

2000-02-01T23:59:59.000Z

12

Titlul studiului: Investigatorul principal  

E-Print Network [OSTI]

[Romanian] Titlul studiului: Investigatorul principal: DECLARAIA DREPTURILOR SUBIECTULUI CARE participantul la cercetare, v rugm s indicai relaia cu acesta: ______________________ #12;Short Form ­ ROMANIAN

Biederman, Irving

13

Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction ? p ? ?p  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

High-statistics measurements of differential cross sections and spin density matrix elements for the reaction ? p--> ?p have been made using the CLAS detector at Jefferson Lab. We cover center-of-mass energies (?s) from 1.97 to 2.84 GeV, with an extensive coverage in the ? production angle. The high statistics of the data sample made it necessary to carefully account for the interplay between the phi natural lineshape and effects of the detector resolution, that are found to be comparable in magnitude. We study both the charged- (?-->K+K- and neutral- (?-K0SK0L) KK? decay modes of the ?. Further, for the charged mode, we differentiate between the cases where the final K-track is directly detected or its momentum reconstructed as the total missing momentum in the event. The two charged-mode topologies and the neutral-mode have different resolutions and are calibrated against each other. Extensive usage is made of kinematic fitting to improve the reconstructed ? mass resolution. Our final results are reported in 10- and mostly 30-MeV-wide ?s bins for the charged- and the neutral-mode, respectively. Possible effects from K+?* channels with pKK? final-states are discussed. These present results constitute the most precise and extensive ? photoproduction measurements to date and in conjunction with the ? photoproduction results recently published by CLAS, will greatly improve our understanding of low energy vector meson photoproduction. ? p --> ?p

Dey, Biplab [Carnegie Mellon Univ., Pittsburgh, PA (United States); Meyer, Curtis A. [Carnegie Mellon Univ., Pittsburgh, PA (United States); Bellis, Matt [Carnegie Mellon Univ., Pittsburgh, PA (United States); Williams, M. [Carnegie Mellon Univ., Pittsburgh, PA (United States)

2014-05-01T23:59:59.000Z

14

A Design-Oriented Framework to Determine the Parasitic Parameters of High Frequency Magnetics in Switching Power Supplies using Finite Element Analysis Techniques  

E-Print Network [OSTI]

A DESIGN-ORIENTED FRAMEWORK TO DETERMINE THE PARASITIC PARAMETERS OF HIGH FREQUENCY MAGNETICS IN SWITCING POWER SUPPLIES USING FINITE ELEMENT ANALYSIS TECHNIQUES A Thesis by MOHAMMAD BAGHER SHADMAND Submitted to the Office... to Determine the Parasitic Parameters of High Frequency Magnetics in Switching Power Supplies using Finite Element Analysis Techniques Copyright 2012 Mohammad Bagher Shadmand A DESIGN-ORIENTED FRAMEWORK TO DETERMINE THE PARASITIC PARAMETERS OF HIGH...

Shadmand, Mohammad

2012-07-16T23:59:59.000Z

15

ASU EFRC - Principal investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformationCenterResearch Highlights Media ContactgovEducationWelcomePrincipal

16

Measurement of the $WW+WZ$ Production Cross Section Using a Matrix Element Technique in Lepton + Jets Events  

SciTech Connect (OSTI)

We present a measurement of the WW + WZ production cross section observed in a final state consisting of an identified electron or muon, two jets, and missing transverse energy. The measurement is carried out in a data sample corresponding to up to 4.6 fb{sup -1} of integrated luminosity at {radical}s = 1.96 TeV collected by the CDF II detector. Matrix element calculations are used to separate the diboson signal from the large backgrounds. The WW + WZ cross section is measured to be 17.4 {+-} 3.3 pb, in agreement with standard model predictions. A fit to the dijet invariant mass spectrum yields a compatible cross section measurement.

Aaltonen, T.; /Helsinki Inst. of Phys.; Alvarez Gonzalez, B.; /Oviedo U. /Cantabria Inst. of Phys.; Amerio, S.; /INFN, Padua; Amidei, D.; /Michigan U.; Anastassov, A.; /Northwestern U.; Annovi, A.; /Frascati; Antos, J.; /Comenius U.; Apollinari, G.; /Fermilab; Appel, J.A.; /Fermilab; Apresyan, A.; /Purdue U.; Arisawa, T.; /Waseda U. /Dubna, JINR

2010-08-01T23:59:59.000Z

17

Development of a technique for ex-reactor heating of electrodes and for obtaining voltage-current characteristics of multi-cell thermionic fuel elements  

SciTech Connect (OSTI)

This paper presents results of development of a technique for ex-reactor heating with simultaneous recording of voltage-current characteristics of multi-cell thermionic fuel elements (TFE). Heating pulses were applied to electrodes of a thermionic energy converter (TIC), and between these pulses in the antiphase to them there were applied shorter pulses. The TIC emitter was heated by energy of an electric current flowing from the collector (back current heating). Comparison of TIC voltage-current characteristics, obtained for direct (using electric heater) and back current (current from the collector) heating, shows that for the same conditions they differ only slightly. Significant difference may be observed in the case of different profiles along the collector working surface. Results are given of the investigation of multi-cell thermionic fuel assemblies conducted using this technique. The developed technique of the TFE diagnostics can be successfully employed to assess the device quality. Pre-loop testing of multi-cell TFE by the method of back currents allows for cost effective and expeditious thermovacuum treatment of the TFE on thermal stands and for checking of its serviceability prior to its mounting into an irradiation loop or reactor-converter, enables improvements to the TFE design, monitoring of its electric parameters, for example, after vibration testing, and TFE accelerated testing in the most arduous conditions (thermocycling, loss of vacuum, etc.).

Kalandarishvili, A.G.; Mailov, G.M.; Igumnov, B.N.; Bisko, V.A. [I.N. Vekua Sukhumi Inst. for Physics and Engineering, Tbilisi (Georgia)

1995-12-31T23:59:59.000Z

18

Modules over principal ideal rings  

E-Print Network [OSTI]

957 Na)or Sub]sot: Nathematics MODULES OVER PRINCIPAL IDEAL RINGS A Thesis Jules Bellin Vieaux Approved as to style and content by: (Chairman of Committee) (Head of Department r Student Advisor) August 1957 ACKNOWLEDGMENT I would like... to express my sincere appreciation to Dr. W. E. Koss and Dr. E. R. Keown for their aid and d. irection in the writing of this thesis. J ~ BE V TABLE OP CONTENTS Preface ~ ~ + ~ o ~ ~ ~ o ~ ~ oeooe ~ ~ ~ ~oo ~ a ~ oo ~ o ~ oo. o. . e 1 I. Principal...

Vieaux, Jules Bellin

1957-01-01T23:59:59.000Z

19

Elements & Compounds Atoms (Elements)  

E-Print Network [OSTI]

#12;Elements & Compounds #12;Atoms (Elements) Molecules (Compounds) Cells Elements & Compounds #12 #12;First shell Second shell Third shell Hydrogen 1H Lithium 3Li Sodium 11Na Beryllium 4Be Magnesium energy Higher energy (a) A ball bouncing down a flight of stairs provides an analogy for energy levels

Frey, Terry

20

Discrete Element Modeling  

SciTech Connect (OSTI)

The Distinct Element Method (also frequently referred to as the Discrete Element Method) (DEM) is a Lagrangian numerical technique where the computational domain consists of discrete solid elements which interact via compliant contacts. This can be contrasted with Finite Element Methods where the computational domain is assumed to represent a continuum (although many modern implementations of the FEM can accommodate some Distinct Element capabilities). Often the terms Discrete Element Method and Distinct Element Method are used interchangeably in the literature, although Cundall and Hart (1992) suggested that Discrete Element Methods should be a more inclusive term covering Distinct Element Methods, Displacement Discontinuity Analysis and Modal Methods. In this work, DEM specifically refers to the Distinct Element Method, where the discrete elements interact via compliant contacts, in contrast with Displacement Discontinuity Analysis where the contacts are rigid and all compliance is taken up by the adjacent intact material.

Morris, J; Johnson, S

2007-12-03T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

Principal Associate Director - Global Security  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar Home DesignPresentations Presentations926Innovation| PrincetonPrincipal

22

Tensor Principal Component Analysis via Convex Optimization  

E-Print Network [OSTI]

Dec 11, 2012 ... Keywords: Tensor; Principal Component Analysis; Low Rank; Nuclear Norm; Semidefinite Programming Relaxation. Category 1: Convex and ...

Bo Jiang

2012-12-11T23:59:59.000Z

23

Fibra -Principal Vm a as smart cities  

E-Print Network [OSTI]

Fibra - Principal Vêm aí as smart cities Autor: Filipe Santa Bárbara Editora: N.D. Id: 1636658 Data, sendo interdita qualquer reprodução, mesmo que parcial #12;Fibra - Principal Vêm aí as smart cities parcial #12;Fibra - Principal Vêm aí as smart cities Autor: Filipe Santa Bárbara Editora: N.D. Id: 1636649

Instituto de Sistemas e Robotica

24

Principal Components Analysis for Binary Data  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix CHAPTER I INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Formulations of Principal Components Analysis . . . . . . . . 2 1.2 Generalization of Sparse Principal Components Analysis to Binary Variables... . . . . . . . . . . . . . . . . . . . . . . . . 8 1.3 Review of Estimation Procedures . . . . . . . . . . . . . . . . 11 1.4 Overview of Dissertation . . . . . . . . . . . . . . . . . . . . . 18 II SPARSE PRINCIPAL COMPONENTS ANALYSIS FOR BI- NARY DATA...

Lee, Seokho

2010-07-14T23:59:59.000Z

25

Improving access to care by determining key elements of culturally and linguistically appropriate healthcare interventions for Hispanic populations in Texas using a Delphi technique  

E-Print Network [OSTI]

the groups for importance, indicated the level of agreement/disagreement with each element, and rated each element for its individual importance. This study is important because it is the first time an expert panel of solely Hispanic healthcare providers has...

Ponder, Linda Milam

2007-04-25T23:59:59.000Z

26

Elemental Modes of Occurrence in an Illinois #6 Coal and Fractions Prepared by Physical Separation Techniques at a Coal Preparation Plant  

SciTech Connect (OSTI)

In order to gain better insight into elemental partitioning between clean coal and tailings, modes of occurrence have been determined for a number of major and trace elements (S, K, Ca, V, Cr, Mn, Fe, Zn, As, Se, Pb) in an Illinois No.6 coal and fractions prepared by physical separation methods at a commercial coal preparation plant. Elemental modes of occurrence were largely determined directly by XAFS or Moessbauer spectroscopic methods because the concentrations of major minerals and wt.% ash were found to be highly correlated for this coal and derived fractions, rendering correlations between individual elements and minerals ambiguous for inferring elemental modes of occurrence. Of the major elements investigated, iron and potassium are shown to be entirely inorganic in occurrence. Most (90%) of the iron is present as pyrite, with minor fractions in the form of clays and sulfates. All potassium is present in illitic clays. Calcium in the original coal is 80-90% inorganic and is divided between calcite, gypsum, and illite, with the remainder of the calcium present as carboxyl-bound calcium. In the clean coal fraction, organically associated Ca exceeds 50% of the total calcium. This organically-associated form of Ca explains the poorer separation of Ca relative to both K and ash. Among the trace elements, V and Cr are predominantly inorganically associated with illite, but minor amounts (5-15% Cr, 20-30% V) of these elements are also organically associated. Estimates of the V and Cr contents of illite are 420 ppm and 630 ppm, respectively, whereas these elements average 20 and 8 ppm in the macerals. Arsenic in the coal is almost entirely associated with pyrite, with an average As content of about 150 ppm, but some As ({approx} 10%) is present as arsenate due to minor oxidation of the pyrite. The mode of occurrence of Zn, although entirely inorganic, is more complex than normally noted for Illinois basin coals; about 2/3 is present in sphalerite, with lesser amounts associated with illite and a third form yet to be conclusively identified. The non-sulfide zinc forms are removed predominantly by the first stage of separation (rotary breaker), whereas the sphalerite is removed by the second stage (heavy media). Germanium is the only trace element determined to have a predominantly organic association.

Huggins, F.; Seidu, L; Shah, N; Huffman, G; Honaker, R; Kyger, J; Higgins, B; Robertson, J; Pal, S; Seehra, M

2009-01-01T23:59:59.000Z

27

Conflict of Interest Review CRADA Principal Investigator's Certification  

E-Print Network [OSTI]

Conflict of Interest Review CRADA Principal Investigator's Certification CRADA Principal Investigator: ______________________________ IC: ___________________________ CRADA ID Number: _________________ Collaborating Organization: ________________________________________________ CRADA Title

Baker, Chris I.

28

Thresholding Multivariate Regression and Generalized Principal Components  

E-Print Network [OSTI]

the high-dimensional data matrices have been extensively researched for uncorrelated and independent situations, they are much less so for the transposable data matrices. A generalization of principal component analysis and the related weighted least...

Sun, Ranye

2014-03-17T23:59:59.000Z

29

Measurement of the top-quark mass in the lepton+jets channel using a matrix element technique with the CDF II detector  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

A measurement of the top-quark mass is presented using Tevatron data from proton-antiproton collisions at center-of-mass energy ?s = 1.96 TeV collected with the CDF II detector. Events are selected from a sample of candidates for production of tt? pairs that decay into the lepton+jets channel. The top-quark mass is measured with an unbinned maximum likelihood method where the event probability density functions are calculated using signal and background matrix elements, as well as a set of parameterized jet-to-parton transfer functions. The likelihood function is maximized with respect to the top-quark mass, the signal fraction in the sample, and a correction to the jet energy scale (JES) calibration of the calorimeter jets. The simultaneous measurement of the JES correction ({Delta}{sub JES}) amounts to an additional in situ jet energy calibration based on the known mass of the hadronically decaying W boson. Using the data sample of 578 lepton+jets candidate events, corresponding to 3.2 fb-1 of integrated luminosity, the top-quark mass is measured to be mt = 172.4± 1.4 (stat + ?JES) ± 1.3 (syst) GeV/c2.

Aaltonen, T [Helsinki Inst. of Phys.; Alvarez Gonzalez, B [Oviedo U., Cantabria Inst. of Phys.; Amerio, S [INFN, Padua; Amidei, D [Michigan U.; Anastassov, A [Northwestern U.; Annovi, A [Frascati

2011-10-14T23:59:59.000Z

30

Measurement of the top-quark mass in the lepton+jets channel using a matrix element technique with the CDF II detector  

SciTech Connect (OSTI)

A measurement of the top-quark mass is presented using Tevatron data from proton-antiproton collisions at center-of-mass energy ?s = 1.96 TeV collected with the CDF II detector. Events are selected from a sample of candidates for production of tt? pairs that decay into the lepton+jets channel. The top-quark mass is measured with an unbinned maximum likelihood method where the event probability density functions are calculated using signal and background matrix elements, as well as a set of parameterized jet-to-parton transfer functions. The likelihood function is maximized with respect to the top-quark mass, the signal fraction in the sample, and a correction to the jet energy scale (JES) calibration of the calorimeter jets. The simultaneous measurement of the JES correction ({Delta}{sub JES}) amounts to an additional in situ jet energy calibration based on the known mass of the hadronically decaying W boson. Using the data sample of 578 lepton+jets candidate events, corresponding to 3.2 fb-1 of integrated luminosity, the top-quark mass is measured to be mt = 172.4± 1.4 (stat + ?JES) ± 1.3 (syst) GeV/c2.

Aaltonen, T [Helsinki Inst. of Phys.; Alvarez Gonzalez, B [Oviedo U., Cantabria Inst. of Phys.; Amerio, S [INFN, Padua; Amidei, D [Michigan U.; Anastassov, A [Northwestern U.; Annovi, A [Frascati

2011-10-14T23:59:59.000Z

31

Principal-Agent Problems in Energy Efficient Computing in a University Setting  

E-Print Network [OSTI]

of buildings, energy efficiency is seen as the key element to achieve carbon neutrality. Furthermore, the McPrincipal-Agent Problems in Energy Efficient Computing in a University Setting Marco Pritoni, Siva G Gunda, Tracy Hsieh Energy Efficiency Center, University of California-Davis ABSTRACT About 10

California at Davis, University of

32

A principal in transition: an autoethnography  

E-Print Network [OSTI]

. At the completion of each chapter I would pause and consider this question, ?What would Dr. Skrla think?? This served as a quality control measure for my work. If my chapter passed this litmus test, I knew it would have value. Dr. Kelly Hester, I appreciate... an appropriate education. The 1950s were also marked by an increased focus for the principal to oversee the daily operation and minute details of operating a large institution. As indicated by the above criteria, the role of the principal in the mid-20th...

Dethloff, Carl Henry

2007-04-25T23:59:59.000Z

33

Project title: Principal Investigator(s)  

E-Print Network [OSTI]

No. 0123 Project title: Principal Investigator(s): Funding Agency: Submission deadline: Instruments, redeployment costs) OBS engineering and technical support cost: (on shore and at sea) Shipping: Travel and technical support for OBS operations at sea. The cost of providing this support (e.g., instrument charges

Menke, William

34

Monomial Principalization in the Singular Corey Harris  

E-Print Network [OSTI]

Monomial Principalization in the Singular Setting Corey Harris Florida State University January 15, 2014 #12;Regular Sequences Let R be a ring and a1, . . . , ad R. a1, . . . , ad is a regular sequence if (a1, . . . , ad) R is a proper ideal and the image of ai in R/(a1, . . . , ai-1) is a non

35

F. G. WALTON SMITH PRINCIPAL CHARACTERISTICS  

E-Print Network [OSTI]

Variable Pitch Electrical Twin 80kw generators 208 vac, 3 phase, 110/120 vac, single phase UPSF. G. WALTON SMITH PRINCIPAL CHARACTERISTICS The Rosenstiel School operates a state reach speeds of over 12 knots and has a draft of only 5-1/2 feet. In its ten staterooms the vessel can

Miami, University of

36

The analysis of mixtures: Application of principal component analysis to XAS spectra  

SciTech Connect (OSTI)

Many samples which are subjected to XAS analysis contain the element of interest in more than one chemical form. The interpretation of the spectras from such samples is often not straightforward, particularly if appropriate model systems are not available. We have applied principal component analysis (PCA) to real and simulated systems which contain mixtures of several species for a given element PCA has been extensively used for the analysis of other types of spectra, including MS, IR and UV-VIS. The application of PCA to XAS is illustrated by examining the speciation of iron within coals. PCA can determine how many different species that contain a particular element are present in a series of spectra. In tandem with model compounds, principal component analysis can suggest which of the models may contribute to the observed XAS spectra.

Wasserman, S.R.

1996-10-01T23:59:59.000Z

37

A new finite element lifting surface technique  

E-Print Network [OSTI]

~ ~ ~ ~ ~ ~ ~ ~ ~ 34 VITA 39 vi LIST OF FIGURES Figure Page 1. Planar Panel Idealization 13 2. Vortex-Box Lifting Surface Model 14 3. Vortex-Box Trailing Wake Model 4. Spanwise Distribution Of Circulation, Planar Wing 5. Chordwise Distribution Of Circulation... coordinate ? ~ circulation strength, ft /sec 2 p ~ freestream density, slugs/ft 3 o a portion of S and W velocity potential, ft /sec 2 Subscripts a, b, c points in Cartesian space i, g indicies n ~ direction normal to a surface x, y, z with respect...

Kocurek, James David

1973-01-01T23:59:59.000Z

38

Principal Component Analysis Over Continuous Subspaces and Intersection of Half-spaces ?  

E-Print Network [OSTI]

Principal Component Analysis Over Continuous Subspaces and Intersection of Half-spaces ? Anat Levin for dimensionality reduction of multivariate data with many application areas in image analysis, pattern recog Component Analysis (PCA) is one of the most pop- ular techniques for dimensionality reduction

39

Principal Investigators | Photosynthetic Antenna Research Center  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar Home DesignPresentations Presentations926Innovation|Science,Principal

40

Principal Investigators - Combustion Energy Frontier Research Center  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearch Welcome to theNews &User ServicesRadioPressPrincipal

Note: This page contains sample records for the topic "techniques principal elements" 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

Principal Investigators | Photosynthetic Antenna Research Center  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - SeptemberMicroneedles for4-16 FOR Primary AuthorstemActivitiesGrid WabashPrincipal

42

Search for Standard Model Higgs Boson Production in Association with a $W$ Boson Using a Matrix Element Technique at CDF in $p\\bar{p}$ Collisions at $\\sqrt{s} = 1.96$ TeV  

SciTech Connect (OSTI)

This paper presents a search for standard model Higgs boson production in association with a W boson using events recorded by the CDF experiment in a dataset corresponding to an integrated luminosity of 5.6 fb{sup -1}. The search is performed using a matrix element technique in which the signal and background hypotheses are used to create a powerful discriminator. The discriminant output distributions for signal and background are fit to the observed events using a binned likelihood approach to search for the Higgs boson signal. We find no evidence for a Higgs boson, and 95% confidence level (C.L.) upper limits are set on {sigma}(p{bar p} {yields} WH) x {Beta}(H {yields} b{bar b}). The observed limits range from 3.5 to 37.6 relative to the standard model expectation for Higgs boson masses between m{sub H} = 100 GeV/c{sup 2} and m{sub H} = 150 GeV/c{sup 2}. The 95% C.L. expected limit is estimated from the median of an ensemble of simulated experiments and varies between 2.9 and 32.7 relative to the production rate predicted by the standard model over the Higgs boson mass range studied.

Aaltonen, T.; /Helsinki Inst. of Phys.; Alvarez Gonzalez, B.; /Oviedo U. /Cantabria Inst. of Phys.; Amerio, S.; /INFN, Padua; Amidei, D.; /Michigan U.; Anastassov, A.; /Northwestern U. /Fermilab; Annovi, A.; /Frascati; Antos, J.; /Comenius U.; Apollinari, G.; /Fermilab; Appel, J.A.; /Fermilab; Arisawa, T.; /Waseda U.; Artikov, A.; /Dubna, JINR /Texas A-M

2011-12-01T23:59:59.000Z

43

Search for standard model Higgs boson production in association with a W boson using a matrix element technique at CDF in pp? collisions at ?s=1.96??TeV  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

This paper presents a search for standard model Higgs boson production in association with a W boson using events recorded by the CDF experiment in a data set corresponding to an integrated luminosity of 5.6 fb?¹. The search is performed using a matrix element technique in which the signal and background hypotheses are used to create a powerful discriminator. The discriminant output distributions for signal and background are fit to the observed events using a binned likelihood approach to search for the Higgs boson signal. We find no evidence for a Higgs boson, and 95% confidence level (C.L.) upper limits are set on ?(pp??WH)×B(H?bb¯). The observed limits range from 3.5 to 37.6 relative to the standard model expectation for Higgs boson masses between mH=100 GeV/c² and mH=150 GeV/c². The 95% C.L. expected limit is estimated from the median of an ensemble of simulated experiments and varies between 2.9 and 32.7 relative to the production rate predicted by the standard model over the Higgs boson mass range studied.

Aaltonen, T.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bisello, D.; Bizjak, I.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Calamba, A.; Calancha, C.; Camarda, S.; Campanelli, M.; Campbell, M.; Canelli, F.; Carls, B.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Carron, S.; Casal, B.; Casarsa, M.; Castro, A.; Catastini, P.; Cauz, D.; Cavaliere, V.; Cavalli-Sforza, M.; Cerri, A.; Cerrito, L.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Cho, K.; Chokheli, D.; Chung, W. H.; Chung, Y. S.; Ciobanu, C. I.; Ciocci, M. A.; Clark, A.; Clarke, C.; Compostella, G.; Convery, M. E.; Conway, J.; Corbo, M.; Cordelli, M.; Cox, C. A.; Cox, D. J.; Crescioli, F.; Cuevas, J.; Culbertson, R.; Dagenhart, D.; d’Ascenzo, N.; Datta, M.; de Barbaro, P.; Dell’Orso, M.; Demortier, L.; Deninno, M.; Devoto, F.; d’Errico, M.; Di Canto, A.; Di Ruzza, B.; Dittmann, J. R.; D’Onofrio, M.; Donati, S.; Dong, P.; Dorigo, M.; Dorigo, T.; Ebina, K.; Elagin, A.; Eppig, A.; Erbacher, R.; Errede, S.; Ershaidat, N.; Eusebi, R.; Farrington, S.; Feindt, M.; Fernandez, J. P.; Field, R.; Flanagan, G.; Forrest, R.; Frank, M. J.; Franklin, M.; Freeman, J. C.; Funakoshi, Y.; Furic, I.; Gallinaro, M.; Garcia, J. E.; Garfinkel, A. F.; Garosi, P.; Gerberich, H.; Gerchtein, E.; Giagu, S.; Giakoumopoulou, V.; Giannetti, P.; Gibson, K.; Ginsburg, C. M.; Giokaris, N.; Giromini, P.; Giurgiu, G.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldin, D.; Goldschmidt, N.; Golossanov, A.; Gomez, G.; Gomez-Ceballos, G.; Goncharov, M.; González, O.; Gorelov, I.; Goshaw, A. T.; Goulianos, K.; Grinstein, S.; Grosso-Pilcher, C.; Group, R. C.; Guimaraes da Costa, J.; Hahn, S. R.; Halkiadakis, E.; Hamaguchi, A.; Han, J. Y.; Happacher, F.; Hara, K.; Hare, D.; Hare, M.; Harr, R. F.; Hatakeyama, K.; Hays, C.; Heck, M.; Heinrich, J.; Herndon, M.; Hewamanage, S.; Hocker, A.; Hopkins, W.; Horn, D.; Hou, S.; Hughes, R. E.; Hurwitz, M.; Husemann, U.; Hussain, N.; Hussein, M.; Huston, J.; Introzzi, G.; Iori, M.; Ivanov, A.; James, E.; Jang, D.; Jayatilaka, B.; Jeon, E. J.; Jindariani, S.; Jones, M.; Joo, K. K.; Jun, S. Y.; Junk, T. R.; Kamon, T.; Karchin, P. E.; Kasmi, A.; Kato, Y.; Ketchum, W.; Keung, J.; Khotilovich, V.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kim, Y. J.; Kimura, N.; Kirby, M.; Klimenko, S.; Knoepfel, K.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Krop, D.; Kruse, M.; Krutelyov, V.; Kuhr, T.; Kurata, M.; Kwang, S.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; LeCompte, T.; Lee, E.; Lee, H. S.; Lee, J. S.; Lee, S. W.; Leo, S.; Leone, S.; Lewis, J. D.; Limosani, A.; Lin, C.-J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, C.; Liu, H.; Liu, Q.; Liu, T.; Lockwitz, S.; Loginov, A.; Lucchesi, D.; Lueck, J.; Lujan, P.; Lukens, P.; Lungu, G.; Lys, J.; Lysak, R.; Madrak, R.; Maeshima, K.; Maestro, P.; Malik, S.; Manca, G.; Manousakis-Katsikakis, A.; Margaroli, F.; Marino, C.; Martínez, M.; Mastrandrea, P.; Matera, K.; Mattson, M. E.; Mazzacane, A.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McNulty, R.; Mehta, A.; Mehtala, P.; Mesropian, C.; Miao, T.; Mietlicki, D.; Mitra, A.; Miyake, H.; Moed, S.; Moggi, N.; Mondragon, M. N.; Moon, C. S.; Moore, R.; Morello, M. J.; Morlock, J.; Movilla Fernandez, P.; Mukherjee, A.; Muller, Th.; Murat, P.; Mussini, M.; Nachtman, J.; Nagai, Y.; Naganoma, J.; Nakano, I.; Napier, A.; Nett, J.; Neu, C.; Neubauer, M. S.; Nielsen, J.; Nodulman, L.; Noh, S. Y.; Norniella, O.; Oakes, L.; Oh, S. H.; Oh, Y. D.; Oksuzian, I.; Okusawa, T.; Orava, R.; Ortolan, L.; Pagan Griso, S.; Pagliarone, C.; Palencia, E.; Papadimitriou, V.; Paramonov, A. A.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pellett, D. E.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Pianori, E.; Pilot, J.; Pitts, K.; Plager, C.; Pondrom, L.; Poprocki, S.; Potamianos, K.; Prokoshin, F.; Pranko, A.; Ptohos, F.; Punzi, G.; Rahaman, A.; Ramakrishnan, V.; Ranjan, N.; Redondo, I.; Renton, P.; Rescigno, M.; Riddick, T.; Rimondi, F.; Ristori, L.; Robson, A.; Rodrigo, T.; Rodriguez, T.; Rogers, E.; Rolli, S.; Roser, R.; Ruffini, F.; Ruiz, A.; Russ, J.; Rusu, V.; Safonov, A.

2012-04-01T23:59:59.000Z

44

Compound and Elemental Analysis At International Geothermal Area...  

Open Energy Info (EERE)

Indonesia (Laney, 2005) Exploration Activity Details Location International Geothermal Area Indonesia Exploration Technique Compound and Elemental Analysis Activity Date Usefulness...

45

Madelyn Creedon Confirmed as Principal Deputy Administrator for...  

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

(DOE) Principal Deputy Administrator for the National Nuclear Security Administration (NNSA). "Madelyn Creedon's confirmation comes at a critical point for the National Nuclear...

46

Statement of Patricia Hoffman, Principal Deputy Assistant Secretary...  

Office of Environmental Management (EM)

Statement of Patricia Hoffman, Principal Deputy Assistant Secretary for Electricity Delivery and Energy Reliability, before the House Appropriations Subcommittee on Energy and...

47

A Look at Principal Building Activities in Commercial Buildings  

Gasoline and Diesel Fuel Update (EIA)

Buildings Home> Special Topics > 1995 Principal Building Activities Office Education Health Care Retail and Service Food Service Food Sales Lodging Religious Worship Public...

48

Extension Education Projects Principal Investigator: Jesse C. LaPrade  

E-Print Network [OSTI]

: Demonstrating Stream Restoration: Natural Channel Design, Stormwater Management and Exotic Species Control Amount of Award: $152,000 Title of Award: Developing Community-Based Restoration Initiatives Principal

49

Ultraviolet and Green Receptors in Principal Eyes of Jumping Spiders  

E-Print Network [OSTI]

ABSTRACT Spectral sensitivities of cells in principal eyes of the jumping spider Phidippus reqius were measured using techniques of intraceUular recording. Three types of cells were found. UV ceils had peak sensitivities at 370 nm and were over 4 log units less sensitive at wavelengths longer than 460 nm. Green-sensitive cells had spectral sensitivities which were well fit by nomogram curves peaking at 532 nm. UV-green ceils had dual peaks of sensitivity at about 370 and 525 nm, but the ratios of UV-to-green sensitivities varied over a 40:1 range from cell to cell. Moreover, responses of UV-green cells to flashes of UV light were slower than to flashes of green light. Segregation of receptor types into the known layers of receptors in these eyes could not be shown. It is concluded that jumping spiders have the potential for dichromatic color vision. The brightly colored, keen-sighted jumping spiders have long been considered the possessers of color vision. Peckham and Peckham (1894) claimed that males of a number of species ( Dendryphantes elegans, Saitis pulex, Phiddipus rufus, and Astia vittata) used color clues to identify females (of the same species)

Robert D. D~. Voe

50

Programmatic Elements  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide provides acceptable methods of meeting the requirements of DOE O 151.1C for programmatic elements that sustain the emergency management program and maintain the readiness of the program to respond to an emergency. Cancels DOE G 151.1-1, Volume 5-1, DOE G 151.1-1, Volume 5-2, DOE G 151.1-1, Volume 5-3, DOE G 151.1-1, Volume 5-4, DOE G 151.1-1, Volume 7-1, and DOE G 151.1-1, Volume 7-3.

2007-07-11T23:59:59.000Z

51

Answer to a question on the principal ideal theorem  

E-Print Network [OSTI]

over a (nonzero) principal ideal and satisfies n=1 pn = 0 but such that htp > 1. AMS subject (with 1). It is known that if p is a finitely generated prime ideal of D such that htp = 1, then n=1 pn) principal ideal, then does htp = 1. We show in this paper that the answer turns out to be negative

Cahen, Paul-Jean

52

Response Elements  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Guide provides acceptable methods for meeting the requirement of DOE O 151.1C for response elements that respond or contribute to response as needed in an emergency. Cancels DOE G 151.1-1, Volume 3-1, DOE G 151.1-1, Volume 3-2, DOE G 151.1-1, Volume 3-3, DOE G 151.1-1, Volume 3-4, DOE G 151.1-1, Volume 4-1, DOE G 151.1-1, Volume 4-2, DOE G 151.1-1, Volume 4-3, DOE G 151.1-1, Volume 4-4, DOE G 151.1-1, Volume 4-5, and DOE G 151.1-1, Volume 4-6.

2007-07-11T23:59:59.000Z

53

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

54

Management Skills and Attitudes of Principals Toward Energy Utilization  

E-Print Network [OSTI]

The purpose of this study was to compare several factors in the management skills of principals which affected energy utilization and, therefore, increased or decreased energy consumption in the school plant. This study provided districts...

Huntington, P.; Mayfield, E.

1987-01-01T23:59:59.000Z

55

Principal realization of the Yangian Y(gl(n))  

SciTech Connect (OSTI)

Motivated to simplify the structure of tensor representations we give a new set of generators for the Yangian Y(sl(n)) using the principal realization in simple Lie algebras. The isomorphism between our new basis and the standard Cartan-Weyl basis is also given. We show by example that the principal basis simplifies the Yangian action significantly in the tensor product of the fundamental representation and its dual.

Bai Chengming [Chern Institute of Mathematics and LPMC, Nankai University, Tanjin 300071 (China); Ge Molin [Chern Institute of Mathematics, Nankai University, Tanjin 300071 (China); Jing Naihuan [Department of Mathematics, North Carolina State University, Raleigh, North Carolina 27695-8205 (United States) and School of Sciences, South China University of Technology, Guangzhou 510640 (China)

2009-01-15T23:59:59.000Z

56

Abstract--Principal component analysis (PCA) is a commonly applied technique for data analysis and processing,  

E-Print Network [OSTI]

Institute "Nikola Tesla", Belgrade, Serbia (phone: +81-3-7734-2699; fax: +81-3-7734-2699; e-mail: marko@ sg

Sugiyama, Masashi

57

Three key elements necessary for successful testing  

SciTech Connect (OSTI)

Real-time surface readout during data acquisition, downhole shutting, and appropriate pressure gauges are three key elements for successful well tests. These elements are often overlooked in designing and implementing a successful well test. This second in a series of three articles on well testing shows how these elements affected the testing of an example well. Also reviewed are the capabilities of several new testing tools and techniques.

Ehlig-Economides, C.A.; Hegeman, P. (Schlumberger Oilfield Services, Houston, TX (United States)); Clark, G. (Schlumberger Oilfield Services, Aberdeen (United Kingdom))

1994-07-25T23:59:59.000Z

58

Quadrilateral/hexahedral finite element mesh coarsening  

DOE Patents [OSTI]

A technique for coarsening a finite element mesh ("FEM") is described. This technique includes identifying a coarsening region within the FEM to be coarsened. Perimeter chords running along perimeter boundaries of the coarsening region are identified. The perimeter chords are redirected to create an adaptive chord separating the coarsening region from a remainder of the FEM. The adaptive chord runs through mesh elements residing along the perimeter boundaries of the coarsening region. The adaptive chord is then extracted to coarsen the FEM.

Staten, Matthew L; Dewey, Mark W; Scott, Michael A; Benzley, Steven E

2012-10-16T23:59:59.000Z

59

Dismantling techniques  

SciTech Connect (OSTI)

Most of the dismantling techniques used in a Decontamination and Dismantlement (D and D) project are taken from conventional demolition practices. Some modifications to the techniques are made to limit exposure to the workers or to lessen the spread of contamination to the work area. When working on a D and D project, it is best to keep the dismantling techniques and tools as simple as possible. The workers will be more efficient and safer using techniques that are familiar to them. Prior experience with the technique or use of mock-ups is the best way to keep workers safe and to keep the project on schedule.

Wiese, E.

1998-03-13T23:59:59.000Z

60

Compound and Elemental Analysis At Fenton Hill HDR Geothermal...  

Open Energy Info (EERE)

Technique Compound and Elemental Analysis Activity Date - 1983 Usefulness useful DOE-funding Unknown Notes Thin sections were prepared of the different lithologies from each...

Note: This page contains sample records for the topic "techniques principal elements" 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

Compound and Elemental Analysis At Seven Mile Hole Area (Larson...  

Open Energy Info (EERE)

Technique Compound and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Standard X-ray diffractometer (XRD) analyses were used in the...

62

Compound and Elemental Analysis At Walker-Lane Transitional Zone...  

Open Energy Info (EERE)

Zone Region (Coolbaugh, Et Al., 2010) Exploration Activity Details Location Walker-Lane Transition Zone Geothermal Region Exploration Technique Compound and Elemental Analysis...

63

Compound and Elemental Analysis At Valles Caldera - Redondo Geothermal...  

Open Energy Info (EERE)

Redondo Geothermal Area (White, Et Al., 1992) Exploration Activity Details Location Valles Caldera - Redondo Geothermal Area Exploration Technique Compound and Elemental Analysis...

64

Compound and Elemental Analysis At Central Nevada Seismic Zone...  

Open Energy Info (EERE)

Central Nevada Seismic Zone Region (Laney, 2005) Exploration Activity Details Location Central Nevada Seismic Zone Geothermal Region Exploration Technique Compound and Elemental...

65

Compound and Elemental Analysis At Lake City Hot Springs Area...  

Open Energy Info (EERE)

Lake City Hot Springs Area (Warpinski, Et Al., 2004) Exploration Activity Details Location Lake City Hot Springs Area Exploration Technique Compound and Elemental Analysis Activity...

66

Compound and Elemental Analysis At Lake City Hot Springs Area...  

Open Energy Info (EERE)

Lake City Hot Springs Area (Sladek, Et Al., 2004) Exploration Activity Details Location Lake City Hot Springs Area Exploration Technique Compound and Elemental Analysis Activity...

67

Project Title and Principal Investigators FY 2014 Federal  

E-Print Network [OSTI]

Sea Grant Program Project Title and Principal Investigators FY 2014 Federal Funding * FY 2014, NY, RI, WHOI Buy Out or Build Back? A Comparative Assessment of Approaches to Employing Public Stewards Academies in Maryland (Dana R. Fisher) $69,999 $35,007 MI Development of Stable Open Channel

68

PRINCIPAL DISEASES OF COMMERCIALLY IMPORTANT MARINE BIVALVE MOLLUSCA AND CRUSTACEA  

E-Print Network [OSTI]

of disease-resistant strains of shellfish, environmental manipulation (dredging of grow. ing areas, chemical has ex- panded, it has become evident that disease, among other environmental variables, can drasPRINCIPAL DISEASES OF COMMERCIALLY IMPORTANT MARINE BIVALVE MOLLUSCA AND CRUSTACEA By Carl J

69

Revised 1997 Retail Electricity Price Forecast Principal Author: Ben Arikawa  

E-Print Network [OSTI]

Revised 1997 Retail Electricity Price Forecast March 1998 Principal Author: Ben Arikawa Electricity 1997 FORE08.DOC Page 1 CALIFORNIA ENERGY COMMISSION ELECTRICITY ANALYSIS OFFICE REVISED 1997 RETAIL ELECTRICITY PRICE FORECAST Introduction The Electricity Analysis Office of the California Energy Commission

70

Micro et Nano Physique Cours 1 : les principes de la  

E-Print Network [OSTI]

Micro et Nano Physique (MNP) Cours 1 : les principes de la mécanique quantique (approche conceptuelle) #12;Micro et nano physique (MNP)page 1 Pourquoi un cours sur la physique microscopique ? · Une fondamentaux à la base des technologies du numérique #12;Micro et nano physique (MNP)page 2 Organisation de l

Rioul, Olivier

71

Vibration signatures, wavelets and principal components analysis in diesel engine  

E-Print Network [OSTI]

Vibration signatures, wavelets and principal components analysis in diesel engine diagnostics G of a normally aspirated diesel engine contain valu­ able information on the health of the combustion chamber induced in a 4­stroke diesel engine and the ensuing vi­ bration signals recorded. Three different feature

Sharkey, Amanda

72

IMPROVED SEARCH OF PRINCIPAL COMPONENT ANALYSIS DATABASES FOR SPECTRO-POLARIMETRIC INVERSION  

SciTech Connect (OSTI)

We describe a simple technique for the acceleration of spectro-polarimetric inversions based on principal component analysis (PCA) of Stokes profiles. This technique involves the indexing of the database models based on the sign of the projections (PCA coefficients) of the first few relevant orders of principal components of the four Stokes parameters. In this way, each model in the database can be attributed a distinctive binary number of 2{sup 4n} bits, where n is the number of PCA orders used for the indexing. Each of these binary numbers (indices) identifies a group of ''compatible'' models for the inversion of a given set of observed Stokes profiles sharing the same index. The complete set of the binary numbers so constructed evidently determines a partition of the database. The search of the database for the PCA inversion of spectro-polarimetric data can profit greatly from this indexing. In practical cases it becomes possible to approach the ideal acceleration factor of 2{sup 4n} as compared to the systematic search of a non-indexed database for a traditional PCA inversion. This indexing method relies on the existence of a physical meaning in the sign of the PCA coefficients of a model. For this reason, the presence of model ambiguities and of spectro-polarimetric noise in the observations limits in practice the number n of relevant PCA orders that can be used for the indexing.

Casini, R.; Lites, B. W. [High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000 (United States); Ramos, A. Asensio [Instituto de Astrofisica de Canarias, c/Via Lactea s/n, E-38205 La Laguna, Tenerife (Spain); Ariste, A. Lopez [THEMIS, CNRS UPS 853, c/Via Lactea s/n, E-38200 La Laguna, Tenerife (Spain)

2013-08-20T23:59:59.000Z

73

E-Print Network 3.0 - agnew co-principal investigator Sample...  

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

Date Principal ... Source: Zimmerman, Steven C. - Department of Chemistry, University of Illinois at Urbana-Champaign...

74

Superheavy Elements - Achievements and Challenges  

SciTech Connect (OSTI)

The search for superheavy elements (SHE) has yielded exciting results for both the 'cold fusion' approach with reactions employing Pb and Bi targets and the ''hot fusion'' reactions with {sup 48}Ca beams on actinide targets. The most recent activities at GSI were the successful production of a more neutron rich isotope of element 112 in the reaction {sup 48}Ca+{sup 238}U confirming earlier result from FLNR, and the attempt to synthesize an isotope with Z 120 in the reaction {sup 64}Ni+{sup 238}U. Apart from the synthesis of new elements, advanced nuclear structure studies for heavy and super heavy elements promise a detailed insight in the properties of nuclear matter under the extreme conditions of high Z and A. The means are evaporation residue(ER)-{alpha}-{alpha} and -{alpha}-{gamma} coincidence techniques applied after separation of the reaction products from the beam. Recent examples of interesting physics to be discovered in this region of the chart of nuclides are the investigation of K-isomers observed for {sup 252,254}No and indicated for {sup 270}Ds. Fast chemistry and precision mass measurements deliver in addition valuable information on the fundamental properties of the SHE.

Ackermann, Dieter [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstr. 1, D-64291 Darmstadt (Germany)

2009-03-04T23:59:59.000Z

75

1999 Commercial Buildings Characteristics--Principal Building Activities  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved Reserves (Billion Cubic Feet)WyomingSquareEnd-Use Equipment Topics:Principal

76

Principal Investigators | Center for Gas SeparationsRelevant to Clean  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearch Welcome to theNews &User ServicesRadioPressPrincipalEnergy

77

Electrochemical Techniques  

SciTech Connect (OSTI)

Sensitive and selective detection techniques are of crucial importance for capillary electrophoresis (CE), microfluidic chips, and other microfluidic systems. Electrochemical detectors have attracted considerable interest for microfluidic systems with features that include high sensitivity, inherent miniaturization of both the detection and control instrumentation, low cost and power demands, and high compatibility with microfabrication technology. The commonly used electrochemical detectors can be classified into three general modes: conductimetry, potentiometry, and amperometry.

Chen, Gang; Lin, Yuehe

2008-07-20T23:59:59.000Z

78

Principal Associate Directorate for Science, Technology, and Engineering (PADSTE)  

E-Print Network [OSTI]

Infrastructure: Smart Grids Grid Design - develop efficient and robust integration of geographically distributed imposed by the transmission of electrical power. Grid Control - develop distributed control techniques

79

Principal Perceptions of School Capacity to Meet Requirements of No Child Left Behind  

E-Print Network [OSTI]

The purpose of this study was to determine if significant differences existed in principals’ perceptions of their school’s capacity to meet Adequate Yearly Progress (AYP) requirements between principals whose schools failed to meet AYP requirements...

Hull, Richard Donald

2013-07-30T23:59:59.000Z

80

Finite Volume Element Method  

E-Print Network [OSTI]

FVE is closely related to the control volume finite element method ... simple stencils, to apply to a fairly wide range of fluid flow equations, to effectively treat.

2003-12-06T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

3. Geowissenschaftlich wichtige Elemente Erdalkalimetalle, Leichte Elemente  

E-Print Network [OSTI]

Lithium, Beryllium und Bor Die leichten Elemente #12;Lithium, Beryllium und Bor Li, Be und B inkompatibel Fluide Mantelkeil Schmelze Vulkanischer Bogen Verwitterung, Erosion Meerwasser (hier schließt sich der-up of cosmogenic nuclides in case of no erosion Production rates For radionuclides (26Al, 10Be): C(0) = P(0)/(1­e

Siebel, Wolfgang

82

E-Print Network 3.0 - adjusted functional principal Sample Search...  

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

Report "Recommended Detector Lifetime Adjustments" Summary: Technical Evaluation Report "Recommended Detector Lifetime Adjustments" Date: July 16, 1999... Principal...

83

Josephson junction element  

SciTech Connect (OSTI)

A sandwich-type josephson junction element wherein a counter electrode is made of a mo-re alloy which contains 10-90 atomic-% of re. The josephson junction element has a high operating temperature, and any deterioration thereof attributed to a thermal cycle is not noted.

Kawabe, U.; Tarutani, Y.; Yamada, H.

1982-03-09T23:59:59.000Z

84

Neutronic fuel element fabrication  

DOE Patents [OSTI]

This disclosure describes a method for metallurgically bonding a complete leak-tight enclosure to a matrix-type fuel element penetrated longitudinally by a multiplicity of coolant channels. Coolant tubes containing solid filler pins are disposed in the coolant channels. A leak-tight metal enclosure is then formed about the entire assembly of fuel matrix, coolant tubes and pins. The completely enclosed and sealed assembly is exposed to a high temperature and pressure gas environment to effect a metallurgical bond between all contacting surfaces therein. The ends of the assembly are then machined away to expose the pin ends which are chemically leached from the coolant tubes to leave the coolant tubes with internal coolant passageways. The invention described herein was made in the course of, or under, a contract with the U.S. Atomic Energy Commission. It relates generally to fuel elements for neutronic reactors and more particularly to a method for providing a leak-tight metal enclosure for a high-performance matrix-type fuel element penetrated longitudinally by a multiplicity of coolant tubes. The planned utilization of nuclear energy in high-performance, compact-propulsion and mobile power-generation systems has necessitated the development of fuel elements capable of operating at high power densities. High power densities in turn require fuel elements having high thermal conductivities and good fuel retention capabilities at high temperatures. A metal clad fuel element containing a ceramic phase of fuel intimately mixed with and bonded to a continuous refractory metal matrix has been found to satisfy the above requirements. Metal coolant tubes penetrate the matrix to afford internal cooling to the fuel element while providing positive fuel retention and containment of fission products generated within the fuel matrix. Metal header plates are bonded to the coolant tubes at each end of the fuel element and a metal cladding or can completes the fuel-matrix enclosure by encompassing the sides of the fuel element between the header plates.

Korton, George (Cincinnati, OH)

2004-02-24T23:59:59.000Z

85

Parallel Finite Element Simulation of Tracer Injection in Oil Reservoirs  

E-Print Network [OSTI]

Parallel Finite Element Simulation of Tracer Injection in Oil Reservoirs Alvaro L.G.A. Coutinho In this work, parallel finite element techniques for the simulation of tracer injection in oil reservoirs. Supercomputers have made it possible to consider global reservoir effects which can not be represented using

Coutinho, Alvaro L. G. A.

86

Yearly average performance of the principal solar collector types  

SciTech Connect (OSTI)

The results of hour-by-hour simulations for 26 meteorological stations are used to derive universal correlations for the yearly total energy that can be delivered by the principal solar collector types: flat plate, evacuated tubes, CPC, single- and dual-axis tracking collectors, and central receiver. The correlations are first- and second-order polynomials in yearly average insolation, latitude, and threshold (= heat loss/optical efficiency). With these correlations, the yearly collectible energy can be found by multiplying the coordinates of a single graph by the collector parameters, which reproduces the results of hour-by-hour simulations with an accuracy (rms error) of 2% for flat plates and 2% to 4% for concentrators. This method can be applied to collectors that operate year-around in such a way that no collected energy is discarded, including photovoltaic systems, solar-augmented industrial process heat systems, and solar thermal power systems. The method is also recommended for rating collectors of different type or manufacturer by yearly average performance, evaluating the effects of collector degradation, the benefits of collector cleaning, and the gains from collector improvements (due to enhanced optical efficiency or decreased heat loss per absorber surface). For most of these applications, the method is accurate enough to replace a system simulation.

Rabl, A.

1981-01-01T23:59:59.000Z

87

Modeling a bender element test using Abaqus Finite Element Program  

E-Print Network [OSTI]

Finite Element Methods hold promise for modeling the behavior of an unsaturated soil specimen subjected to bender element agitation. The immediate objective of this research project is to reproduce a bender element test ...

Johnson, Sean (Sean Michael)

2011-01-01T23:59:59.000Z

88

Fuel elements of thermionic converters  

SciTech Connect (OSTI)

Work on thermionic nuclear power systems has been performed in Russia within the framework of the TOPAZ reactor program since the early 1960s. In the TOPAZ in-core thermionic convertor reactor design, the fuel element`s cladding is also the thermionic convertor`s emitter. Deformation of the emitter can lead to short-circuiting and is the primary cause of premature TRC failure. Such deformation can be the result of fuel swelling, thermocycling, or increased unilateral pressure on the emitter due to the release of gaseous fission products. Much of the work on TRCs has concentrated on preventing or mitigating emitter deformation by improving the following materials and structures: nuclear fuel; emitter materials; electrical insulators; moderator and reflector materials; and gas-exhaust device. In addition, considerable effort has been directed toward the development of experimental techniques that accurately mimic operational conditions and toward the creation of analytical and numerical models that allow operational conditions and behavior to be predicted without the expense and time demands of in-pile tests. New and modified materials and structures for the cores of thermionic NPSs and new fabrication processes for the materials have ensured the possibility of creating thermionic NPSs for a wide range of powers, from tens to several hundreds of kilowatts, with life spans of 5 to 10 years.

Hunter, R.L. [ed.] [Sandia National Labs., Albuquerque, NM (United States). Environmental Systems Assessment Dept.; Gontar, A.S.; Nelidov, M.V.; Nikolaev, Yu.V.; Schulepov, L.N. [RI SIA Lutch, Podolsk (Russian Federation)

1997-01-01T23:59:59.000Z

89

E-Print Network 3.0 - applied mathematics principal Sample Search...  

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

parents, and students. One of the most important group that affect mathematics reform is school... principals. A project related to modifying ... Source: Spagnolo, Filippo...

90

Elemental sulfur recovery process  

DOE Patents [OSTI]

An improved catalytic reduction process for the direct recovery of elemental sulfur from various SO[sub 2]-containing industrial gas streams. The catalytic process provides combined high activity and selectivity for the reduction of SO[sub 2] to elemental sulfur product with carbon monoxide or other reducing gases. The reaction of sulfur dioxide and reducing gas takes place over certain catalyst formulations based on cerium oxide. The process is a single-stage, catalytic sulfur recovery process in conjunction with regenerators, such as those used in dry, regenerative flue gas desulfurization or other processes, involving direct reduction of the SO[sub 2] in the regenerator off gas stream to elemental sulfur in the presence of a catalyst. 4 figures.

Flytzani-Stephanopoulos, M.; Zhicheng Hu.

1993-09-07T23:59:59.000Z

91

Frontiers of heavy element nuclear and radiochemistry  

SciTech Connect (OSTI)

The production and half-lives of the heaviest chemical elements, now known through Z = 112, are reviewed. Recent experimental evidence for the stabilization of heavy element isotopes due to proximity to deformed nuclear shells at Z = 108 and N = 162 is compared with the theoretical predictions. The possible existence of isotopes of elements 107--110 with half-lives of seconds or longer, and production reactions and experimental techniques for increasing the overall yields of such isotopes in order to study both their nuclear and chemical properties are discussed. The present status of studies of the chemical properties of Rf, Ha, and Sg is briefly summarized and prospects for extending chemical studies beyond Sg are considered.

Hoffman, D.C.

1997-10-01T23:59:59.000Z

92

Acceleration of matrix element computations for precision measurements  

E-Print Network [OSTI]

The matrix element technique provides a superior statistical sensitivity for precision measurements of important parameters at hadron colliders, such as the mass of the top quark or the cross section for the production of Higgs bosons. The main practical limitation of the technique is its high computational demand. Using the concrete example of the top quark mass, we present two approaches to reduce the computation time of the technique by a factor of 90. First, we utilize low-discrepancy sequences for numerical Monte Carlo integration in conjunction with a dedicated estimator of numerical uncertainty, a novelty in the context of the matrix element technique. Second, we utilize a new approach that factorizes the overall jet energy scale from the matrix element computation, a novelty in the context of top quark mass measurements. The utilization of low-discrepancy sequences is of particular general interest, as it is universally applicable to Monte Carlo integration, and independent of the computing environment.

Oleg Brandt; Gaston Gutierrez; Michael H. L. S. Wang; Zhenyu Ye

2014-11-19T23:59:59.000Z

93

Photovoltaic radiation detector element  

DOE Patents [OSTI]

A radiation detector element is formed of a body of semiconductor material, a coating on the body which forms a photovoltaic junction therewith, and a current collector consisting of narrow metallic strips, the aforesaid coating having an opening therein in the edge of which closely approaches but is spaced from the current collector strips.

Agouridis, D.C.

1980-12-17T23:59:59.000Z

94

DOLFIN: Automated Finite Element Computing  

E-Print Network [OSTI]

´de´lec 1980]. (4) L2-conforming finite elements: (a) DGq, arbitrary degree discontinuous Lagrange elements; and (b) CR1, first degree Crouzeix–Raviart5 elements [Crouzeix and Raviart 1973]. Arbitrary combinations of the above elements may be used to define...

Logg, Anders; Wells, G N

2009-01-01T23:59:59.000Z

95

Inverting geodetic time series with a principal component analysis-based inversion method  

E-Print Network [OSTI]

Inverting geodetic time series with a principal component analysis-based inversion method A. P (2010), Inverting geodetic time series with a principal component analysis-based inversion method, J; Cohen, 1999]. This formulation is linear and easily inverted using standard algorithms. The distribution

Avouac, Jean-Philippe

96

BLIND SEPARATION OF UNCORRELATED SOURCES VIA PRINCIPAL COMPONENT ANALYSIS OF OBSERVATIONS  

E-Print Network [OSTI]

BLIND SEPARATION OF UNCORRELATED SOURCES VIA PRINCIPAL COMPONENT ANALYSIS OF OBSERVATIONS, principe]@cnel.ufl.edu, luis@dicom.unican.es ABSTRACT A well-known fact in blind deconvolution) of the received signal. For blind source separation, however, a similar special case, equivalent to the situation

Slatton, Clint

97

Asset-based poverty analysis in rural Bangladesh: A comparison of principal component analysis and  

E-Print Network [OSTI]

1 Asset-based poverty analysis in rural Bangladesh: A comparison of principal component analysis not be regarded as the views of SRI or The University of Leeds. #12;3 Asset-based poverty analysis in rural The trend towards multi-dimensional poverty assessment ..................... 5 Principal component analysis

Mound, Jon

98

The Multi-Principal OS Construction of the Gazelle Web Browser Helen J. Wang  

E-Print Network [OSTI]

distrusting web site principals. Nevertheless, no existing browsers, including new architectures like IE 8-based OS the exclusive control to manage the protection of all sys- tem resources among web site principals kernel is an operating system that exclusively manages resource protection and sharing across web site

Hunt, Galen

99

Trace elements in oil shale. Progress report, 1979-1980  

SciTech Connect (OSTI)

The purpose of this research program is to understand the potential impact of an oil shale industry on environmental levels of trace contaminants in the region. The program involves a comprehensive study of the sources, release mechanisms, transport, fate, and effects of toxic trace chemicals, principally the trace elements, in an oil shale industry. The overall objective of the program is to evaluate the environmental and health consequences of the release of toxic trace elements by shale and oil production and use. The baseline geochemical survey shows that stable trace elements maps can be constructed for numerous elements and that the trends observed are related to geologic and climatic factors. Shale retorted by above-ground processes tends to be very homogeneous (both in space and in time) in trace element content. Leachate studies show that significant amounts of B, F, and Mo are released from retorted shales and while B and Mo are rapidly flushed out, F is not. On the other hand, As, Se, and most other trace elements are not present in significant quantities. Significant amounts of F and B are also found in leachates of raw shales. Very large concentrations of reduced sulfur species are found in leachates of processed shale. Very high levels of B and Mo are taken up in some plants growing on processed shale with and without soil cover. There is a tendency for some trace elements to associate with specific organic fractions, indicating that organic chelation or complexation may play an important role. Many of the so-called standard methods for analyzing trace elements in oil shale-related materials are inadequate. A sampling manual is being written for the environmental scientist and practicing engineer. A new combination of methods is developed for separating the minerals in oil shale into different density fractions. Microbial investigations have tentatively identified the existence of thiobacilli in oil shale materials such as leachates. (DC)

Chappell, W R

1980-01-01T23:59:59.000Z

100

Connecting Principals' Professional Development to Practice: The Mediating Roles of Context and Phronesis  

E-Print Network [OSTI]

of unfolding social and economic challenges. Events of the 1950s and 1960s (i.e., launch of Sputnik, Civil Rights movement) brought new criticisms and new expectations to schools (Goodwin, Cunningham, & Eagle, 2005). Two social-political expectations placed... a high percentage (i.e., 85-100%) of the 20-day, 2-year BLPD program; and (c) the principal had opportunities to network with other principals from the same district or ISD who participated in the BLPD at the same time. Principals’ schools were...

Schroeder, Patricia Anne

2013-12-12T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

Elemental analysis of cotton by laser-induced breakdown spectroscopy  

SciTech Connect (OSTI)

Laser-induced breakdown spectroscopy (LIBS) has been applied to the elemental characterization of unprocessed cotton. This research is important in forensic and fraud detection applications to establish an elemental fingerprint of U.S. cotton by region, which can be used to determine the source of the cotton. To the best of our knowledge, this is the first report of a LIBS method for the elemental analysis of cotton. The experimental setup consists of a Nd:YAG laser that operates at the fundamental wavelength as the LIBS excitation source and an echelle spectrometer equipped with an intensified CCD camera. The relative concentrations of elements Al, Ba, Ca, Cr, Cu, Fe, Mg, and Sr from both nutrients and environmental contributions were determined by LIBS. Principal component analysis was used to visualize the differences between cotton samples based on the elemental composition by region in the U.S. Linear discriminant analysis of the LIBS data resulted in the correct classification of >97% of the cotton samples by U.S. region and >81% correct classification by state of origin.

Schenk, Emily R.; Almirall, Jose R.

2010-05-01T23:59:59.000Z

102

Spectral-element adaptive refinement  

E-Print Network [OSTI]

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

Ng, Chung-Sang

103

Perception of principals in the southern, urban U.S. and eastern, urban China regarding the selection, preparation, and professional development of elementary principals  

E-Print Network [OSTI]

schools in eastern China. The naturalistic paradigm of inquiry was used to frame the study and acquire and analyze data. The sample consisted of fourteen elementary school principals in a southern, urban area in the U.S. and an eastern, urban area in China...

Lin, Jie

2005-11-01T23:59:59.000Z

104

Name Position Room Telephone Email Franco Vaccarino Vice-President & Principal, UTSC AA-422 (416) 287-7025 principal@utsc.utoronto.ca  

E-Print Network [OSTI]

) 287-7025 principal@utsc.utoronto.ca Tom Nowers Dean of Student Affairs SL-157 (416) 287-7673 tnowers@utsc.utoronto.ca Tina Doyle Director, AccessAbility Services S-302 (416) 287-7553 doyle@utsc.utoronto.ca Alexandra Love Director, Health and Wellness Centre SL-270 (416) 287-7068 aplove@utsc.utoronto.ca Curtis Cole Director

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

105

Principal Field Agronomist (Research Associate I or II) Position Summary: Research Associate I or II (Principal Field Agronomist) responsible for all field  

E-Print Network [OSTI]

, including taking primary responsibility for maintenance and repair of all equipment, buildings, and tools or II (Principal Field Agronomist) responsible for all field operations for the CSU Crops Testing with farmers, scientists, government representatives, and crop commodity groups. The normal annual work demands

106

The CEBAF Element Database  

SciTech Connect (OSTI)

With the inauguration of the CEBAF Element Database (CED) in Fall 2010, Jefferson Lab computer scientists have taken a step toward the eventual goal of a model-driven accelerator. Once fully populated, the database will be the primary repository of information used for everything from generating lattice decks to booting control computers to building controls screens. A requirement influencing the CED design is that it provide access to not only present, but also future and past configurations of the accelerator. To accomplish this, an introspective database schema was designed that allows new elements, types, and properties to be defined on-the-fly with no changes to table structure. Used in conjunction with Oracle Workspace Manager, it allows users to query data from any time in the database history with the same tools used to query the present configuration. Users can also check-out workspaces to use as staging areas for upcoming machine configurations. All Access to the CED is through a well-documented Application Programming Interface (API) that is translated automatically from original C++ source code into native libraries for scripting languages such as perl, php, and TCL making access to the CED easy and ubiquitous.

Theodore Larrieu, Christopher Slominski, Michele Joyce

2011-03-01T23:59:59.000Z

107

E-Print Network 3.0 - arteria pulmonar principal Sample Search...  

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

Computer Technologies and Information Sciences 98 El momento del Plan B Reducir las emisiones de carbono en un 80 por ciento para 2020 Summary: , PHEV) que fun- cionan principal-...

108

PRINCIPALS' PERCEPTIONS OF BARRIERS TO DISMISSAL OF POOR-PERFORMING TEACHERS  

E-Print Network [OSTI]

Abstract The purpose of this study is to determine which factors influence items that school principals consider "barriers" to dismissal of "incompetent" or "poor performing" teachers. This study determines if specific ...

Dandoy, Jason Robert

2012-08-31T23:59:59.000Z

109

The ties that bind : Iran and Hamas' principal-agent relationship.  

E-Print Network [OSTI]

??The evolution of the Iran-Hamas relationship can be mapped using Principal-Agent analysis. It is a cost-benefit approach based on rational choice theory. In contrast to… (more)

Thomson, Amy

2012-01-01T23:59:59.000Z

110

Investigating the Relationship between the Perceptions of Principals and Teachers on Site-Based Decision Making  

E-Print Network [OSTI]

The purpose of this record of study was to investigate the nature of relationships between the perceptions of principals and teachers on site-based decision making (SBDM) and to uncover patterns existing in relationships between and among state...

Owens, Sandra Deshon

2013-12-06T23:59:59.000Z

111

Principal Paper Sessions Cultivating Ecosystem Services from Agriculture (Scott M. Swinton, Michigan  

E-Print Network [OSTI]

Principal Paper Sessions Cultivating Ecosystem Services from Agriculture (Scott M. Swinton, Michigan State University, Organizer) ECOSYSTEM SERVICES FROM AGRICULTURE: LOOKING BEYOND THE USUAL. The lens is especially revealing when applied to agriculture, the most widespread managed ecosystem

Landis, Doug

112

Title: CEL Solar Photovoltaic Power Project in El Salvador Principal Investigator: Abbas Ghassemi  

E-Print Network [OSTI]

Title: CEL Solar Photovoltaic Power Project in El Salvador Principal Investigator: Abbas Ghassemi solar resource, studying different technology options, anticipating performance, and evaluating the economics of the solar power technologies. The NMSU team is evaluating the potential environmental impacts

Johnson, Eric E.

113

Best Management Practices for Aquatic Vegetation Management Principal Investigator: Joseph E. Morris  

E-Print Network [OSTI]

. Develop educational materials related to aquatic plant identification and their specific managementBest Management Practices for Aquatic Vegetation Management Principal Investigator: Joseph E vegetation management with the ultimate goal of producing the best management practices protocol in Iowa

Koford, Rolf R.

114

A finite element model for transient thermal/structural analysis of large composite space structures  

E-Print Network [OSTI]

on approximate 6 analysis techniques based on finite elements has begun. Such techniques as reduced basis techniques and generalized transform methods offer hope of solving the finite element 8 equations more efficiently. An integrated thermal/structural... integrated analysis codes. However, Mahaney, Thornton, and Dechaumphai have identified require 5 ments for such thermal/structural programs. They concluded that such analysis methods should have the following five characteristics. First, a common finite...

Lutz, James Delmar

2012-06-07T23:59:59.000Z

115

Automation of the matrix element reweighting method  

E-Print Network [OSTI]

Matrix element reweighting is a powerful experimental technique widely employed to maximize the amount of information that can be extracted from a collider data set. We present a procedure that allows to automatically evaluate the weights for any process of interest in the standard model and beyond. Given the initial, intermediate and final state particles, and the transfer functions for the final physics objects, such as leptons, jets, missing transverse energy, our algorithm creates a phase-space mapping designed to efficiently perform the integration of the squared matrix element and the transfer functions. The implementation builds up on MadGraph, it is completely automatized and publicly available. A few sample applications are presented that show the capabilities of the code and illustrate the possibilities for new studies that such an approach opens up.

P. Artoisenet; V. Lemaître; F. Maltoni; O. Mattelaer

2011-02-01T23:59:59.000Z

116

New Technique Gives a Deeper Look into the Chemistry of Interfaces  

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

New Technique Gives a Deeper Look into the Chemistry of Interfaces Print A new technique developed at the ALS offers sub-nanometer depth resolution of every chemical element to be...

117

Principal Curvature-Based Region Detector for Object Recognition Hongli Deng, Wei Zhang, Eric Mortensen, Thomas Dietterich  

E-Print Network [OSTI]

eigen- values. We call this the principal curvature image, as it ap- proximates the principal curvature discriminative features. An alter- native to local intensity cues is to capture semi-local struc- tural cues

Washington at Seattle, University of

118

Photoconductive circuit element reflectometer  

DOE Patents [OSTI]

A photoconductive reflectometer for characterizing semiconductor devices at millimeter wavelength frequencies where a first photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short first laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test. Second PCEs are connected along the transmission line to sample the signals on the transmission line when excited into conductance by short second laser light pulses, spaced apart in time a variable period from the first laser light pulses. Electronic filters connected to each of the second PCEs act as low-pass filters and remove parasitic interference from the sampled signals and output the sampled signals in the form of slowed-motion images of the signals on the transmission line.

Rauscher, Christen (Alexandria, VA)

1990-01-01T23:59:59.000Z

119

Photoconductive circuit element reflectometer  

DOE Patents [OSTI]

A photoconductive reflectometer for characterizing semiconductor devices at millimeter wavelength frequencies where a first photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short first laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test. Second PCEs are connected along the transmission line to sample the signals on the transmission line when excited into conductance by short second laser light pulses, spaced apart in time a determinable period from the first laser light pulses. Electronic filters connected to each of the second PCEs act as low-pass filters and remove parasitic interference from the sampled signals and output the sampled signals in the form of slowed-motion images of the signals on the transmission line. 4 figs.

Rauscher, C.

1987-12-07T23:59:59.000Z

120

Superheavy Element Synthesis And Nuclear Structure  

SciTech Connect (OSTI)

After the successful progress in experiments to synthesize superheavy elements (SHE) throughout the last decades, advanced nuclear structure studies in that region have become feasible in recent years thanks to improved accelerator, separation and detection technology. The means are evaporation residue(ER)-alpha-alpha and ER-alpha-gamma coincidence techniques complemented by conversion electron (CE) studies, applied after a separator. Recent examples of interesting physics to be discovered in this region of the chart of nuclides are the studies of K-isomers observed in {sup 252,254}No and in {sup 270}Ds.

Ackermann, D.; Block, M.; Burkhard, H.-G.; Heinz, S.; Hessberger, F. P.; Khuyagbaatar, J.; Kojouharov, I.; Mann, R.; Maurer, J. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstr.1, D-64921 Darmstadt (Germany); Antalic, S.; Saro, S.; Venhart, M. [Department of Nuclear Physics, Comenius UniversitySK-84248 Bratislava (Slovakia); Hofmann, S. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstr.1, D-64921 Darmstadt (Germany); Institut fuer Physik, Johann Wolfgang Goethe-Universitaet, D-60438 Frankfurt (Germany); Leino, M.; Uusitalo, J. [Department of Physics, University of JyvaeskylaeFIN-40351 Jyvaeskylae (Finland); Nishio, K. [Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki 319-1195 (Japan); Popeko, A. G.; Yeremin, A. V. [Flerov Laboratory of Nuclear Reactions, JINR Ru-141 980 Dubna (Russian Federation)

2009-08-26T23:59:59.000Z

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


121

Dynamic analysis of mechanisms by finite elements  

SciTech Connect (OSTI)

The need to increase productivity in order to decrease manufacturing costs lead to an increase in the working speeds of machines and mechanical systems used in manufacturing. A method is presented for investigating the dynamics of mechanisms with elastic links. Finite element method is used in the formulation of the dynamic problem. Modal transformation is used in order to reduce the number of equations of motion. Using the presented technique, elastic and rigid body motions of mechanism links are solved simultaneously. The presented method may be applied to spatial and open loop mechanisms including robot manipulators as well.

Botsali, F.M.; Uenuevar, A. [Selcuk Univ., Konya (Turkey). Mechanical Engineering Dept.

1996-11-01T23:59:59.000Z

122

THE NEW ELEMENT CALIFORNIUM (ATOMIC NUMBER 98)  

E-Print Network [OSTI]

shell, as occurs in rare earth elements at the point ofand homologous rare earth elements in high temperaturethe homologous rare earth elements. (2) Its distinctive high

Thompson, S.G.; Street, K.,Jr.; Ghiorso, A.; Seaborg, G.T.

2008-01-01T23:59:59.000Z

123

Resistive hydrogen sensing element  

DOE Patents [OSTI]

Systems and methods are described for providing a hydrogen sensing element with a more robust exposed metallization by application of a discontinuous or porous overlay to hold the metallization firmly on the substrate. An apparatus includes: a substantially inert, electrically-insulating substrate; a first Pd containing metallization deposited upon the substrate and completely covered by a substantially hydrogen-impermeable layer so as to form a reference resistor on the substrate; a second Pd containing metallization deposited upon the substrate and at least a partially accessible to a gas to be tested, so as to form a hydrogen-sensing resistor; a protective structure disposed upon at least a portion of the second Pd containing metallization and at least a portion of the substrate to improve the attachment of the second Pd containing metallization to the substrate while allowing the gas to contact said the second Pd containing metallization; and a resistance bridge circuit coupled to both the first and second Pd containing metallizations. The circuit determines the difference in electrical resistance between the first and second Pd containing metallizations. The hydrogen concentration in the gas may be determined. The systems and methods provide advantages because adhesion is improved without adversely effecting measurement speed or sensitivity.

Lauf, Robert J. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

124

Assessor Training Assessment Techniques  

E-Print Network [OSTI]

NVLAP Assessor Training Assessment Techniques: Communication Skills and Conducting an Assessment listener ·Knowledgeable Assessor Training 2009: Assessment Techniques: Communication Skills & Conducting, truthful, sincere, discrete · Diplomatic · Decisive · Selfreliant Assessor Training 2009: Assessment

125

Electronic Structure of the Heaviest Elements  

E-Print Network [OSTI]

well known grou~ 14 rare earth elements of atomic numbersproposed for the rare earth elements because these 14

Seaborg, G.T.

2008-01-01T23:59:59.000Z

126

On-line gas chromatographic studies of rutherfordium (Element 104), hahnium (Element 105), and homologs  

SciTech Connect (OSTI)

Gas-phase isothermal chromatogaphy is a method by which volatile compounds of different chemical elements can be separated according to their volatilities. The technique, coupled with theoretical modeling of the processes occurring in the chromatogaphy column, provides accurate determination of thermodynamic properties (e.g., adsorption enthalpies) for compounds of elements, such as the transactinides, which can only be produced on an atom-at-a-time basis. In addition, the chemical selectivity of the isothermal chromatogaphy technique provides the decontamination from interfering activities necessary for the determination of the nuclear decay properties of isotopes of the transactinide elements. Volatility measurements were performed on chloride species of Rf and its group 4 homologs, Zr and Hf, as well as Ha and its group 5 homologs, Nb and Ta. Adsorption enthalpies were calculated for all species using a Monte Carlo code simulation based on a microscopic model for gas thermochromatography in open columns with laminar flow of the carrier gas. Preliminary results are presented for Zr- and Nb-bromides.

Kadkhodayan, B.

1993-05-01T23:59:59.000Z

127

Trace elements in coal by glow discharge mass spectrometry  

SciTech Connect (OSTI)

A need and a demand exist for determining trace elements in coal and coal related by-products, especially those elements which may potentially be a health hazard. The provisions of the 1990 clean air act require that the EPA evaluate the emissions of electric utilities for trace elements and other potentially hazardous organic compounds. The coal fired electric utility industry supplies roughly 60% of the total generating capacity of 2,882,525 million kilowatt hours (nearly 3 trillion kilowatt hours) generated in the U.S. This is accomplished by 414 power plants scattered across the country that burned 813,508,000 short tons of coal in 1993. The relative volatility of some inorganic constituents in coal makes them more prone to be emitted to the atmosphere following combustion. The production of analytical data for trace elements is known to be a difficult task in coal and by-products of coal combustion (fly ash, bottom ash, gas streams, etc.), in terms of both sample collection and analytical determinations. There are several common analytical methods available to the analyst to determine trace elements in coal and coal by-products. In general analytical germs, the material to be analyzed can be totally solubilized (or extracted), or the elements analytes can be determined in the material as a solid. A relatively new elemental technique, Glow Discharge Mass Spectrometry (GDMS) can be used with solids as well. This new analytical technique had never before been applied directly to coal. The radio frequency-glow discharge quadropole mass spectrometer was used to analyze coal directly for the first time ever by rf-GDMS. The rf-GDMS technique is described.

Jacobs, M.L.; Wilson, C.R.; Pestovich, J. Jr. [WAL Inc., Wheat Ridge, CO (United States)] [and others

1995-08-01T23:59:59.000Z

128

The Relationship Between Teachers' Stages of Concern about an Educational Innovation and Their Principals' Administrative Styles  

E-Print Network [OSTI]

List of Tables ix List of Figures x Chapter I. Introduction to the Problem 1 Problem 5 ^he Setting for This Study 5 Terms 8 II. Review of the Literature 15 Change in Education 15 Concerns-Based Adoption Model 19 Factors Affecting Change... in Education 2 5 Implementation 2 6 The Principals' Role 28 Change Facilitator Style 28 Facilitator Role in the Change Process 31 The Principal as Second Change Facilitator 34 Summary 3 7 III. Methodology 3 9 Introduction 3 9 Sample 3 9 Instruments...

Yonally, Dawn

1992-01-01T23:59:59.000Z

129

The Search for Heavy Elements  

ScienceCinema (OSTI)

The 1994 documentary "The Search for Heavy Elements" chronicles the expansion of the periodic table through the creation at Berkeley Lab of elements heavier than uranium. The documentary features a mix of rarely-seen archival footage, historical photos, and interviews with scientists who made history, such as Glenn Seaborg and Albert Ghiorso.

None

2010-01-08T23:59:59.000Z

130

Finite Element Modelling and Molecular Dynamic Simulations of Carbon nanotubes/ Polymer Composites  

E-Print Network [OSTI]

Modeling of single-walled carbon nanotubes, multi-walled nanotubes and nanotube reinforced polymer composites using both the Finite Element method and the Molecular Dynamic simulation technique is presented. Nanotubes subjected to mechanical loading...

Gaddamanugu, Dhatri

2010-07-14T23:59:59.000Z

131

AN ANALYSIS OF EARLY CAREER PRINCIPALS' EXPERIENCE WITH INDUCTION PROGRAMS AND JOB SATISFACTION.  

E-Print Network [OSTI]

Characteristic of Beginning School Principals………… .. 32 4.2 How Widespread Are Induction Programs.............................................. ...37 4.3 Efect of Induction on Satisfction……………………………………. ...48 5.0 CONCLUSION…………………………………………………………………...56 5... 22 Pipalitin Inducti By Urbanicity vii LIST OF GRAPHS Graph Page 1 Induction Components by Geographic Region 44 2 ti by Urbaniity 48 1 Chapter 1 INTRODUCTION 1...

Correll, Craig Alan

2010-05-17T23:59:59.000Z

132

Fault Diagnosis System for a Multilevel Inverter Using a Principal Component Neural Network Surin Khomfoi  

E-Print Network [OSTI]

Fault Diagnosis System for a Multilevel Inverter Using a Principal Component Neural Network Surin system in a multilevel-inverter using a compact neural network is proposed in this paper. It is difficult to diagnose a multilevel-inverter drive (MLID) system using a mathematical model because MLID systems consist

Tolbert, Leon M.

133

Carbon Dioxide Information Analysis Center (CDIAC) PRINCIPAL INVESTIGATOR: Thomas A Boden (CDIAC Di-  

E-Print Network [OSTI]

Carbon Dioxide Information Analysis Center (CDIAC) PRINCIPAL INVESTIGATOR: Thomas A Boden (CDIAC Di of Biological and Environmental Research (BER) PARTNERS: National Aeronautic and Space Administra- tion's (NASA://cdiac.ornl.gov/ PROJECT DESCRIPTION The Carbon Dioxide Information Analysis Center (CDIAC) is the primary climate -change

134

Torsion Spring Oscillator with Dry Friction Summary of the Principal Formulas  

E-Print Network [OSTI]

Torsion Spring Oscillator with Dry Friction ­ Problems Summary of the Principal Formulas of the angle m which sets the limits of the dead zone on both sides of the middle position at which the spring the situation characteris- tic of measuring instruments using a needle, such as moving-coil galvanometers

Butikov, Eugene

135

Impact of Wind Farms on Birds and Bats in Iowa Principal Investigator: Stephen J. Dinsmore  

E-Print Network [OSTI]

Impact of Wind Farms on Birds and Bats in Iowa Principal Investigator: Stephen J. Dinsmore of Natural Resources, State Wildlife Grant Goals and Objectives: Document bird use at wind farm of bird community responses at wind farms and paired control sites. This will produce a measure

Koford, Rolf R.

136

STRUCTURAL DAMAGE DETECTION ALGORITHM BASED ON PRINCIPAL COMPONENT INDEXES AND EMBEDDED ON A REAL TIME PLATFORM  

E-Print Network [OSTI]

of an aircraft turbine blade at different positions. KEYWORDS: Structural Health Monitoring, Principal Component blades or beam structures [1], [2], [3]. The PCA algorithms used in SHM have been numerically implemented and Levenberg­Marquardt (LM) method) while a wave is propagated along a plate. The FPGA used is co

Boyer, Edmond

137

Principal Component Analysis Over Continuous Subspaces and Intersection of Half-spaces?  

E-Print Network [OSTI]

Principal Component Analysis Over Continuous Subspaces and Intersection of Half-spaces? Anat Levin for dimensionality reduction of multivariate data with many application areas in image analysis, pattern recog for data analysis comes from its e cient computational mechanism, the fact that it is well understood

Shashua, Amnon

138

Page 1 of 2 This document stipulates the responsibilities of principal investigators in managing their sponsored  

E-Print Network [OSTI]

Page 1 of 2 I. Purpose This document stipulates the responsibilities of principal investigators in managing their sponsored projects. II. Policy Statement The PI has overall responsibility for the technical and fiscal management of a sponsored project, including staying within funding limits, adhering to reporting

Hutcheon, James M.

139

Extracting Attack Knowledge Using Principal-subordinate Consequence Tagging Case Grammar and Alerts Semantic Networks  

E-Print Network [OSTI]

Extracting Attack Knowledge Using Principal-subordinate Consequence Tagging Case Grammar and Alerts networks from Distributed Denial of Service (DDoS) attacks has become a critical issue that must be tackled, the overwhelming volume of alerts makes it difficult for security administrators to analyze and extract the attack

Ansari, Nirwan

140

Free-Air CO2 Enrichment (FACE) Experiment PRINCIPAL INVESTIGATOR: Richard J. Norby  

E-Print Network [OSTI]

Free-Air CO2 Enrichment (FACE) Experiment PRINCIPAL INVESTIGATOR: Richard J. Norby PARTICIPATING Research PARTNERS: Argonne National Lab, Chapman University, University of Illinois-Chicago, University Free-Air CO2 Enrichment (FACE) project is to understand how the eastern deciduous forest

Note: This page contains sample records for the topic "techniques principal elements" 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

White-nose Syndrome Communications Outreach Campaign Principal Investigator: Rebecca A. Christoffel  

E-Print Network [OSTI]

White-nose Syndrome Communications Outreach Campaign Principal Investigator: Rebecca A. Christoffel target audiences of white-nose syndrome (WNS) in bats and its rapid spread toward Iowa, and to gain one cave or bat population to another, with an ultimate goal of keeping white-nose syndrome from

Koford, Rolf R.

142

Development of Frameworks for Robust Regional Climate Modeling PRINCIPAL INVESTIGATOR: Moetasim Ashfaq  

E-Print Network [OSTI]

goals of climate modeling. Water supports the ecosystems as well as a wide range of human activities to improve region- al predictions of the hydrologic cycle to address climate change impacts, adaptationDevelopment of Frameworks for Robust Regional Climate Modeling PRINCIPAL INVESTIGATOR: Moetasim

143

Faculty of Arts and Science Procedure for Review of Principal's Vision Statement  

E-Print Network [OSTI]

of Departments. 30 Jan ­ 19 Feb Departmental responses to Principal's template prepared and discussed. 5 Feb distributed to members of Faculty. 5 Mar Faculty Board. Discussion of draft response. 19 Mar Committee of Departments. Discussion of draft response. 20 Mar ­ 1 Apr Preparation of revised Faculty response. 2 Apr

Abolmaesumi, Purang

144

Program Director/Principal Investigator (Last, First, Middle): DETAILED BUDGET FOR INITIAL BUDGET PERIOD  

E-Print Network [OSTI]

Program Director/Principal Investigator (Last, First, Middle): DETAILED BUDGET FOR INITIAL BUDGET SUBTOTAL DIRECT COSTS FOR INITIAL BUDGET PERIOD (Item 7a, Face Page) $ CONSORTIUM/CONTRACTUAL COSTS FACILITIES AND ADMINISTRATIVE COSTS TOTAL DIRECT COSTS FOR INITIAL BUDGET PERIOD $ PHS 398 (Rev. 6/09) Page

Ungerleider, Leslie G.

145

Program Director/Principal Investigator (Last, First, Middle): DETAILED BUDGET FOR NEXT BUDGET  

E-Print Network [OSTI]

Program Director/Principal Investigator (Last, First, Middle): DETAILED BUDGET FOR NEXT BUDGET by category) OTHER EXPENSES (Itemize by category) SUBTOTAL DIRECT COSTS FOR NEXT BUDGET PERIOD $ CONSORTIUM FOR NEXT BUDGET PERIOD (Item 8a, Face Page) $ Page Form Page 2PHS 2590 (Rev. 08/12) #12;

Baker, Chris I.

146

Program Director/Principal Investigator (Last, First, Middle): DETAILED BUDGET FOR INITIAL BUDGET PERIOD  

E-Print Network [OSTI]

Program Director/Principal Investigator (Last, First, Middle): DETAILED BUDGET FOR INITIAL BUDGET SUBTOTAL DIRECT COSTS FOR INITIAL BUDGET PERIOD (Item 7a, Face Page) $ CONSORTIUM/CONTRACTUAL COSTS FACILITIES AND ADMINISTRATIVE COSTS TOTAL DIRECT COSTS FOR INITIAL BUDGET PERIOD $ Page Form Page 4 PHS 398

Baker, Chris I.

147

Ultra High-Resolution Global Climate Simulation Project PRINCIPAL INVESTIGATOR: James J. Hack  

E-Print Network [OSTI]

changes in the frequency and intensity of extreme events. This project is developing the scientific a terrestrial carbon modeling capabil- ity. #12;Ultra High-Resolution Global Climate Simulation Project elersUltra High-Resolution Global Climate Simulation Project PRINCIPAL INVESTIGATOR: James J. Hack

148

Analysis of Principal Gas Products During Combustion of Polyether Polyurethane Foam at Different Irradiance Levels   

E-Print Network [OSTI]

This paper studies the release of the principal gas species produced during the combustion of a non-flame-retarded Polyether Polyurethane Foam (PPUF) of density of 20.9 kg/m^3 in the cone calorimeter. Five irradiance levels are studied: 10, 20, 30...

Bustamante Valencia, Lucas; Rogaume, Thomas; Guillaume, Eric; Rein, Guillermo; Torero, Jose L

2009-01-01T23:59:59.000Z

149

Best Management Practices for Hybrid Striped Bass Culture Principal Investigator: Joseph E. Morris  

E-Print Network [OSTI]

in from Kansas on May 15 while sunshine bass were shipped in from Keo-Fish Farms, AR two days later. FryBest Management Practices for Hybrid Striped Bass Culture Principal Investigator: Joseph E. Morris Goals and Objectives: o Perform literature search on extensively-reared hybrid striped bass (HSB

Koford, Rolf R.

150

Hydrogen Composite Tank Program Principal Investigator: Dr. Neel Sirosh, Director of Fuel Storage  

E-Print Network [OSTI]

Hydrogen Composite Tank Program Principal Investigator: Dr. Neel Sirosh, Director of Fuel Storage "TriShield" tank technology (see Fig. 1) meets the percent weight, energy density, and specific energy reductions are possible with further optimization. Fig. 1 TriShieldTM Type IV Tank The 5,000 and 10,000 psi

151

Carbon Sequestration in Terrestrial Ecosystems (CSiTE) PRINCIPAL INVESTIGATOR: Stan D. Wullschleger  

E-Print Network [OSTI]

Carbon Sequestration in Terrestrial Ecosystems (CSiTE) PRINCIPAL INVESTIGATOR: Stan D. Wullschleger://csite.eds.ornl.gov PROJECT DESCRIPTION The Carbon Sequestration in Terrestrial Ecosystems (CSiTE) project conducts research of switchgrass growing in the field. #12;Carbon Sequestration in Terrestrial Ecosystems (CSiTE) tion of inputs

152

Application of Kernel Principal Component Analysis for Single Lead ECG-Derived Respiration  

E-Print Network [OSTI]

1 Application of Kernel Principal Component Analysis for Single Lead ECG-Derived Respiration Devy signal from ECGs. In this study, an improved ECG-derived respiration (EDR) algorithm based on kernel PCA ECGs. Index Terms--ECG-derived respiration (EDR), kernel princi- pal component analysis (kPCA). I

153

An improved ECG-Derived Respiration Method using Kernel Principal Component Analysis  

E-Print Network [OSTI]

An improved ECG-Derived Respiration Method using Kernel Principal Component Analysis Devy Widjaja1) of heart beats generates well-performing ECG- derived respiratory signals (EDR). This study aims at im in the extraction of a respiratory signal from single lead ECGs. 1. Introduction Respiration is often jointly

154

Terminological aspects of data elements  

SciTech Connect (OSTI)

The creation and display of data comprise a process that involves a sequence of steps requiring both semantic and systems analysis. An essential early step in this process is the choice, definition, and naming of data element concepts and is followed by the specification of other needed data element concept attributes. The attributes and the values of data element concept remain associated with them from their birth as a concept to a generic data element that serves as a template for final application. Terminology is, therefore, centrally important to the entire data creation process. Smooth mapping from natural language to a database is a critical aspect of database, and consequently, it requires terminology standardization from the outset of database work. In this paper the semantic aspects of data elements are analyzed and discussed. Seven kinds of data element concept information are considered and those that require terminological development and standardization are identified. The four terminological components of a data element are the hierarchical type of a concept, functional dependencies, schematas showing conceptual structures, and definition statements. These constitute the conventional role of terminology in database design. 12 refs., 8 figs., 1 tab.

Strehlow, R.A. (Oak Ridge National Lab., TN (United States)) [Oak Ridge National Lab., TN (United States); Kenworthey, W.H. Jr. (Department of Defense, Washington, DC (United States)) [Department of Defense, Washington, DC (United States); Schuldt, R.E. (Martin Marietta Aerospace, Denver, CO (United States)) [Martin Marietta Aerospace, Denver, CO (United States)

1991-01-01T23:59:59.000Z

155

Experimental and finite element analysis of high pressure packer elements  

E-Print Network [OSTI]

Packer elements are traditionally rubber seals that can operate under specified downhole conditions and provide a seal for either a short-term, retrievable, or a long-term, permanent, completion. In this case a retrievable ...

Berger, Stephanie, 1981-

2004-01-01T23:59:59.000Z

156

Use of the iterative solution method for coupled finite element and boundary element modeling; Yucca Mountain Site Characterization Project  

SciTech Connect (OSTI)

Tunnels buried deep within the earth constitute an important class geomechanics problems. Two numerical techniques used for the analysis of geomechanics problems, the finite element method and the boundary element method, have complementary characteristics for applications to problems of this type. The usefulness of combining these two methods for use as a geomechanics analysis tool has been recognized for some time, and a number of coupling techniques have been proposed. However, not all of them lend themselves to efficient computational implementations for large-scale problems. This report examines a coupling technique that can form the basis for an efficient analysis tool for large scale geomechanics problems through the use of an iterative equation solver.

Koteras, J.R.

1993-07-01T23:59:59.000Z

157

A graphical preprocessing interface for non-conforming spectral element solvers  

E-Print Network [OSTI]

Page 1 Left: Discretization of a square using 50?50 1 st order elements by FEM. Right: Discretizations of a square using 50 th -order single domain with SM... representative numerical technique of this kind is the Finite Element Method (FEM) [2]. It uses small finite number of elements with low order approximation functions (Fig. 1 left). When engineering models have complex geometry, FEM discretizes the geometry (e...

Kim, Bo Hung

2009-06-02T23:59:59.000Z

158

Method for detecting an element  

DOE Patents [OSTI]

A method for detecting an element is disclosed and which includes the steps of providing a gamma-ray spectrum which depicts, at least in part, a test region having boundaries, and which has a small amount of the element to be detected; providing a calculation which detects the small amount of the element to be detected; and providing a moving window and performing the calculation within the moving window, and over a range of possible window boundaries within the test region to determine the location of the optimal test region within the gamma-ray spectrum.

Blackwood, Larry G.; Reber, Edward L.; Rohde, Kenneth W.

2007-02-06T23:59:59.000Z

159

FTN4 OPTIMIZATION TECHNIQUES.  

E-Print Network [OSTI]

3 1st Edition FTN4 OPTIMIZATION TECHNIQUES November 1979O. INTRODUCTION 1. COt1PILER OPTIMIZATIONS 2. SOURCE CODEcode. Most of these optimizations decrease central processor

Authors, Various

2012-01-01T23:59:59.000Z

160

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network [OSTI]

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power There is a large literature on the traces of powers of random elements of compact Lie groups. One of the earliest

Fulman, Jason

Note: This page contains sample records for the topic "techniques principal elements" 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

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS  

E-Print Network [OSTI]

STEIN'S METHOD, HEAT KERNEL, AND TRACES OF POWERS OF ELEMENTS OF COMPACT LIE GROUPS JASON FULMAN Abstract. Combining Stein's method with heat kernel techniques, we show that the trace of the jth power on the traces of powers of random elements of compact Lie groups. One of the earliest results is due to Diaconis

Fulman, Jason

162

The leadership of Ross O. Swimmer, 1975-1985 : a case study of a modern Cherokee principal chief.  

E-Print Network [OSTI]

??The following study examined leadership characteristics of a modern leader of the Cherokee Nation, Ross O. Swimmer, during his three elections as Principal Chief, 1975-1985.… (more)

Kehle, Jo Layne Sunday

2012-01-01T23:59:59.000Z

163

Principal Investigator Department Title Thrust Area Dr. Gang Li Physics Current Sheet Structures in the Inner Heliosphere 1500  

E-Print Network [OSTI]

Principal Investigator Department Title Thrust Area Dr. Gang Li Physics Current Sheet. Zuejing Xing Accounting/Finance Why are IPOs Underpriced? The Role of Institutional Ownership 3000 Dr

Alabama in Huntsville, University of

164

Canonical elements for collision orbits  

E-Print Network [OSTI]

I derive a set of canonical elements that are useful for collision orbits (perihelion distance approaching zero at fixed semimajor axis). The coordinates are the mean anomaly and the two spherical polar angles at aphelion.

Scott Tremaine

2000-12-12T23:59:59.000Z

165

Environmental research on actinide elements  

SciTech Connect (OSTI)

The papers synthesize the results of research sponsored by DOE's Office of Health and Environmental Research on the behavior of transuranic and actinide elements in the environment. Separate abstracts have been prepared for the 21 individual papers. (ACR)

Pinder, J.E. III; Alberts, J.J.; McLeod, K.W.; Schreckhise, R.G. (eds.)

1987-08-01T23:59:59.000Z

166

Elemental ABAREX -- a user's manual.  

SciTech Connect (OSTI)

ELEMENTAL ABAREX is an extended version of the spherical optical-statistical model code ABAREX, designed for the interpretation of neutron interactions with elemental targets consisting of up to ten isotopes. The contributions from each of the isotopes of the element are explicitly dealt with, and combined for comparison with the elemental observables. Calculations and statistical fitting of experimental data are considered. The code is written in FORTRAN-77 and arranged for use on the IBM-compatible personal computer (PC), but it should operate effectively on a number of other systems, particularly VAX/VMS and IBM work stations. Effort is taken to make the code user friendly. With this document a reasonably skilled individual should become fluent with the use of the code in a brief period of time.

Smith, A.B.

1999-05-26T23:59:59.000Z

167

Contamination Control Techniques  

SciTech Connect (OSTI)

Welcome to a workshop on contamination Control techniques. This work shop is designed for about two hours. Attendee participation is encouraged during the workshop. We will address different topics within contamination control techniques; present processes, products and equipment used here at Hanford and then open the floor to you, the attendees for your input on the topics.

EBY, J.L.

2000-05-16T23:59:59.000Z

168

Diffusive mesh relaxation in ALE finite element numerical simulations  

SciTech Connect (OSTI)

The theory for a diffusive mesh relaxation algorithm is developed for use in three-dimensional Arbitary Lagrange/Eulerian (ALE) finite element simulation techniques. This mesh relaxer is derived by a variational principle for an unstructured 3D grid using finite elements, and incorporates hourglass controls in the numerical implementation. The diffusive coefficients are based on the geometric properties of the existing mesh, and are chosen so as to allow for a smooth grid that retains the general shape of the original mesh. The diffusive mesh relaxation algorithm is then applied to an ALE code system, and results from several test cases are discussed.

Dube, E.I.

1996-06-01T23:59:59.000Z

169

Analysis of the principal's perceptions of the implementation and impact of the accelerated reader and other selected reading strategies used by Texas gold performance elementary schools  

E-Print Network [OSTI]

) to identify the principal??s perception of the levels of implementation and impact of selected reading strategies used by selected elementary schools in Texas to improve student success in reading and (2) to determine the principal??s perception of the extent...

Elmore, Olivia Carol

2005-08-29T23:59:59.000Z

170

Criticality Safety Evaluation for the Advanced Test Reactor U-Mo Demonstration Elements  

SciTech Connect (OSTI)

The Reduced Enrichment Research Test Reactors (RERTR) fuel development program is developing a high uranium density fuel based on a (LEU) uranium-molybdenum alloy. Testing of prototypic RERTR fuel elements is necessary to demonstrate integrated fuel performance behavior and scale-up of fabrication techniques. Two RERTR-Full Size Demonstration fuel elements based on the ATR-Reduced YA elements (all but one plate fueled) are to be fabricated for testing in the Advanced Test Reactor (ATR). The two fuel elements will be irradiated in alternating cycles such that only one element is loaded in the reactor at a time. Existing criticality analyses have analyzed Standard (HEU) ATR elements (all plates fueled) from which controls have been derived. This criticality safety evaluation (CSE) documents analysis that determines the reactivity of the Demonstration fuel elements relative to HEU ATR elements and shows that the Demonstration elements are bound by the Standard HEU ATR elements and existing HEU ATR element controls are applicable to the Demonstration elements.

Leland M. Montierth

2010-12-01T23:59:59.000Z

171

Impeller deflection and modal finite element analysis.  

SciTech Connect (OSTI)

Deflections of an impeller due to centripetal forces are calculated using finite element analysis. The lateral, or out of plane, deflections are an important design consideration for this particular impeller because it incorporates an air bearing with critical gap tolerances. The target gap distance is approximately 10 microns at a rotational velocity of 2500 rpm. The centripetal forces acting on the impeller cause it deflect in a concave fashion, decreasing the initial gap distance as a function of radial position. This deflection is characterized for a previous and updated impeller design for comparative purposes. The impact of design options such as material selection, geometry dimensions, and operating rotational velocity are also explored, followed by a sensitivity study with these parameters bounded by specific design values. A modal analysis is also performed to calculate the impeller's natural frequencies which are desired to be avoided during operation. The finite element modeling techniques continue to be exercised by the impeller design team to address specific questions and evaluate conceptual designs, some of which are included in the Appendix.

Spencer, Nathan A.

2013-10-01T23:59:59.000Z

172

THE NEW ELEMENT BERKELIUM (ATOMIC NUMBER 97)  

E-Print Network [OSTI]

of time from rare earth elements and from the actinidea group from the rare earth elements before using the columnpositions of some rare earth elements was obtained and these

Thompson, S.G.; Ghiorso, A.; Seaborg, G.T.

2008-01-01T23:59:59.000Z

173

The Relationship of Principal Leadership to Organizational Learning and Sustained Academic Achievement  

E-Print Network [OSTI]

THE RELATIONSHIP OF PRINCIPAL LEADERSHIP TO ORGANIZATIONAL LEARNING AND SUSTAINED ACADEMIC ACHIEVEMENT A Dissertation by LEONARD JAMES HARDOIN Submitted to the Office of Graduate Studies of Texas A&M University in partial... Dissertation by LEONARD JAMES HARDOIN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, John R. Hoyle Committee...

Hardoin, Leonard J.

2010-07-14T23:59:59.000Z

174

Child Guidance Techniques.  

E-Print Network [OSTI]

TDOC Z TA24S.7 8873 NO.1314 Child Guidance Techniques The Texas MM University System ~ Texas Agricultural Extension Service DMia! C. Pfannstiel . Director College Station B-1314 ... 2 Contents Helpful Guidance T echniques...

Fraiser, Roberta C.

1982-01-01T23:59:59.000Z

175

A few new (?) facts about infinite elements  

E-Print Network [OSTI]

Keywords: Helmholtz equation; Infinite element; hp finite elements; Echo Area. 1. .... ¼ g :¼ ? ouinc on . ?2.1?. The Sommerfeld radiation condition represents a ...

2006-04-24T23:59:59.000Z

176

Glann Seaborg's Contributions to Heavy Element Science and the Periodic Table  

SciTech Connect (OSTI)

In celebrating the centennial anniversary of the birth of Glenn T. Seaborg it is fitting that we recount and pay tribute to his legacy. Many know of the scientific accomplishments of this man who became a legend and anyone who has attended his lectures can attest to how informative, educational, and entertaining he was. He had a beguiling and whimsical sense of humor and used this to drive home his points and share his passion and quest for discovery. The periodic table is a fundamental cornerstone of science and remains a central unifying principal. Seaborg was the architect of the actinide series of elements and their proper placement in the periodic table and co-discoverer of ten transuranium elements - one of which bears his name, element 106, seaborgium. The work and achievements of this Nobel laureate have touched the lives of many and his legacy will continue for generations to come.

Hobart, David E. [Los Alamos National Laboratory

2012-08-17T23:59:59.000Z

177

Element Power | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revisionWind,Soils and RocksElement Power Name: Element

178

An application of stochastic finite element method in structural reliabiity  

E-Print Network [OSTI]

OF SCIENCE August 1993 Major Subject: Civil Engineering AN APPLICATION OF STOCHASTIC FINITE ELEMENT METHOD IN STRUCTURAL RELIABILITY A Thesis by SANJAY AGRAWAL Approved as to style and content by: Kostas apadimitriou (Chair of Committee) John M... of the beam on the buckling load. The statistical methodology can be efficiently used with available FORM/SORM reliability techniques to compute the probability of failure of the beam due to buckling. Random fields are used to quantify the modeling...

Agrawal, Sanjay

1993-01-01T23:59:59.000Z

179

Fast acting multiple element valve  

DOE Patents [OSTI]

A plurality of slide valve elements having plural axial-spaced annular parts and an internal slide are inserted into a bulkhead in a fluid conduit from a downstream side of the bulkhead, locked in place by a bayonet coupling and set screw, and project through the bulkhead into the upstream conduit. Pneumatic lines connecting the slide valve element actuator to pilot valves are brought out the throat of the valve element to the downstream side. Pilot valves are radially spaced around the exterior of the valve to permit the pneumatic lines to be made identical, thereby to minimize adverse timing tolerances in operation due to pressure variations. Ring manifolds surround the valve adjacent respective pilot valve arrangements to further reduce adverse timing tolerances due to pressure variations, the manifolds being directly connected to the respective pilot valves. Position sensors are provided the valve element slides to signal the precise time at which a slide reaches or passes through a particular point in its stroke to initiate a calibrated timing function.

Yang, Jefferson Y. S. (Orange, CA); Wada, James M. (Torrance, CA)

1991-01-01T23:59:59.000Z

180

Single element laser beam shaper  

DOE Patents [OSTI]

A single lens laser beam shaper for converting laser beams from any spatial profile to a flat-top or uniform spatial profile. The laser beam shaper includes a lens having two aspheric surfaces. The beam shaper significantly simplifies the overall structure in comparison with conventional 2-element systems and therefore provides great ease in alignment and reduction of cost.

Zhang, Shukui (Yorktown, VA); Michelle D. Shinn (Newport News, VA)

2005-09-13T23:59:59.000Z

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


181

The Baldwin Effect and Black Hole Accretion: A Spectral Principal Component Analysis of a Complete QSO Sample  

E-Print Network [OSTI]

A unique set of UV-optical spectrograms of 22 low redshift QSOs are investigated using principal component analysis. We find three significant principal components over the broad wavelength range from Ly\\alpha to H\\alpha. They together account for about 78% of the sample intrinsic variance. We present strong arguments that the first principal component represents the Baldwin effect, relating equivalent widths to the luminosity (i.e. accretion rate), but only emission-line cores are involved. The second component represents continuum variations, probably dominated by intrinsic reddening. The third principal component directly relates QSO UV properties to the optical principal component 1 found by Boroson & Green (1992). It is the primary cause of scatter in the Baldwin relationships. It is also directly related to broad emission-line width and soft X-ray spectral index, and therefore probably driven by Eddington accretion ratio. We demonstrate how Baldwin relationships can be derived using our first principal component, virtually eliminating the scatter caused by the third principal component. This rekindles the hope that the Baldwin relationships can be used for cosmological study.

Zhaohui Shang; Beverley J. Wills; Edward L. Robinson; D. Wills; Ari Laor; Bingrong Xie; Juntao Yuan

2002-11-29T23:59:59.000Z

182

Long Fibre Composite Modelling Using Cohesive User's Element  

SciTech Connect (OSTI)

The development glass matrix composites reinforced by unidirectional long ceramic fibre has resulted in a family of very perspective structural materials. The only disadvantage of such materials is relatively high brittleness at room temperature. The main micromechanisms acting as toughening mechanism are the pull out, crack bridging, matrix cracking. There are other mechanisms as crack deflection etc. but the primer mechanism is mentioned pull out which is governed by interface between fibre and matrix. The contribution shows a way how to predict and/or optimise mechanical behaviour of composite by application of cohesive zone method and write user's cohesive element into the FEM numerical package Abaqus. The presented results from numerical calculations are compared with experimental data. Crack extension is simulated by means of element extinction algorithms. The principal effort is concentrated on the application of the cohesive zone model with the special traction separation (bridging) law and on the cohesive zone modelling. Determination of micro-mechanical parameters is based on the combination of static tests, microscopic observations and numerical calibration procedures.

Kozak, Vladislav; Chlup, Zdenek [Institute of Physics of Material AS of the Czech Republic, Zizkova 22, 616 62 Brno (Czech Republic)

2010-09-30T23:59:59.000Z

183

Vol. 38, No. 2 (2005) BioTechniques 1 Introduction  

E-Print Network [OSTI]

subsets to be tagged, puri- fied, and analyzed. As a result, this technique is able to identify novel), generally consist of three basic elements (Figure 1). The warhead consists of a reactive func- tional group interactions, and prevents steric congestion. The warhead is perhaps to most critical component of an ABP

Bogyo, Matthew

2005-01-01T23:59:59.000Z

184

Electrothermal Analysis and Optimization Techniques for Nanoscale Integrated Circuits  

E-Print Network [OSTI]

of finite difference methods, finite element methods, or Green function based methods, each of which in the design of electrical circuits. This paper overviews several methods for the analysis and optimization overview a restricted set of thermal optimization methods, specifically, placement techniques for thermal

Sapatnekar, Sachin

185

Table 4. Principal shale gas plays: natural gas production and proved reserves, 2012-13  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign ObjectOUR Table 1. Summary:Principal shale gas plays:

186

Principal Investigators' Meetings | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched5 IndustrialIsadore Perlman, 1960 TheOrganization ArgonnePaulEnergyPrincetonPrincipal

187

Technical Sessions Principal Investigator: S. A. Clough Atmospheric and Environmental Research, Inc.  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign ObjectOUR8, 2013Battelle:TechnicalP. Daum L.Principal

188

Table 4. Principal shale gas plays: natural gas production and proved reserves, 2012-13  

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

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

189

High School Principals' Perceptions of Their Effectiveness in Leading District Initiated High School Reform: An Analysis of High School Principals Previously Engaged in High School Reform in an Urban Texas School District  

E-Print Network [OSTI]

school reform. However, to date, research has not provided examples of a successful relationship between campus principals as a collective group and the district (central office) leadership team attempting to implement district-wide high school reform...

Rios, Carlos

2012-07-16T23:59:59.000Z

190

Galaxy Redshifts: Improved Techniques  

E-Print Network [OSTI]

This paper analyses the effects of random noise in determining errors and confidence levels for galaxy redshifts obtained by cross-correlation techniques. The main finding is that confidence levels have previously been overestimated, and errors inaccurately calculated in certain applications. New formul\\ae\\ are presented.

A. F. Heavens

1993-05-26T23:59:59.000Z

191

Infrared Inspection Techniques  

E-Print Network [OSTI]

. By means of a TV monitor tube, a thermal picture is formed where lighter parts represent areas with higher temperatures. Absolute temperature levels of objects can be measured with this technique from -300C to +20000C. A conventional camera is attached...

Hill, A. B.; Bevers, D. V.

1979-01-01T23:59:59.000Z

192

FACILITIES INSTRUCTIONS, STANDARDS, & TECHNIQUES  

E-Print Network [OSTI]

to the repair of hydraulic turbine runners and large pump impellers. Reclamation operates and maintains a wideFACILITIES INSTRUCTIONS, STANDARDS, & TECHNIQUES VOLUME 2-5 TURBINE REPAIR Internet Version variety of reaction and impulse turbines as well as axial flow, mixed flow, radial flow pumps and pump

Laughlin, Robert B.

193

Multiscale Simulation and Uncertainty Quantification Techniques for Richards' Equation in Heterogeneous Media  

E-Print Network [OSTI]

In this dissertation, we develop multiscale finite element methods and uncertainty quantification technique for Richards' equation, a mathematical model to describe fluid flow in unsaturated porous media. Both coarse-level and fine-level numerical...

Kang, Seul Ki

2012-10-19T23:59:59.000Z

194

TECHNIQUES FOR X-RAY EXAMINATIONS OF ENDWELD CLOSURES AND CAN...  

Office of Scientific and Technical Information (OSTI)

TECHNIQUES FOR X-RAY EXAMINATIONS OF ENDWELD CLOSURES AND CAN-TO-CAP BRAZES ON CP-6 TYPE FUEL ELEMENTS. Final Report--Metallurgy Program 7.7.7. Radiographic and fluoroscopic...

195

Query Optimization Techniques Class Hierarchies  

E-Print Network [OSTI]

Query Optimization Techniques Exploiting Class Hierarchies Sophie Cluet 1 Guido Moerkotte 2 1 INRIA Since the introduction of object base management systems (OBMS), many query optimization techniques tailored for object query languages have been proposed. They adapt known optimization techniques

Mannheim, Universität

196

Composite oxygen ion transport element  

SciTech Connect (OSTI)

A composite oxygen ion transport element that has a layered structure formed by a dense layer to transport oxygen ions and electrons and a porous support layer to provide mechanical support. The dense layer can be formed of a mixture of a mixed conductor, an ionic conductor, and a metal. The porous support layer can be fabricated from an oxide dispersion strengthened metal, a metal-reinforced intermetallic alloy, a boron-doped Mo.sub.5Si.sub.3-based intermetallic alloy or combinations thereof. The support layer can be provided with a network of non-interconnected pores and each of said pores communicates between opposite surfaces of said support layer. Such a support layer can be advantageously employed to reduce diffusion resistance in any type of element, including those using a different material makeup than that outlined above.

Chen, Jack C. (Getzville, NY); Besecker, Charles J. (Batavia, IL); Chen, Hancun (Williamsville, NY); Robinson, Earil T. (Mentor, OH)

2007-06-12T23:59:59.000Z

197

Element of an inductive coupler  

DOE Patents [OSTI]

An element for an inductive coupler in a downhole component comprises magnetically conductive material, which is disposed in a recess in annular housing. The magnetically conductive material forms a generally circular trough. The circular trough comprises an outer generally U-shaped surface, an inner generally U-shaped surface, and two generally planar surfaces joining the inner and outer surfaces. The element further comprises pressure relief grooves in at least one of the surfaces of the circular trough. The pressure relief grooves may be scored lines. Preferably the pressure relief grooves are parallel to the magnetic field generated by the magnetically conductive material. The magnetically conductive material is selected from the group consisting of soft iron, ferrite, a nickel iron alloy, a silicon iron alloy, a cobalt iron alloy, and a mu-metal. Preferably, the annular housing is a metal ring.

Hall, David R.; Fox, Joe

2006-08-15T23:59:59.000Z

198

Self supporting heat transfer element  

DOE Patents [OSTI]

The present invention provides an improved internal heat exchange element arranged so as to traverse the inside diameter of a container vessel such that it makes good mechanical contact with the interior wall of that vessel. The mechanical element is fabricated from a material having a coefficient of thermal conductivity above about 0.8 W cm.sup.-1.degree. K.sup.-1 and is designed to function as a simple spring member when that member has been cooled to reduce its diameter to just below that of a cylindrical container or vessel into which it is placed and then allowed to warm to room temperature. A particularly important application of this invention is directed to a providing a simple compartmented storage container for accommodating a hydrogen absorbing alloy.

Story, Grosvenor Cook (Livermore, CA); Baldonado, Ray Orico (Livermore, CA)

2002-01-01T23:59:59.000Z

199

The Origin of the Elements  

ScienceCinema (OSTI)

The world around us is made of atoms. Did you ever wonder where these atoms came from? How was the gold in our jewelry, the carbon in our bodies, and the iron in our cars made? In this lecture, we will trace the origin of a gold atom from the Big Bang to the present day, and beyond. You will learn how the elements were forged in the nuclear furnaces inside stars, and how, when they die, these massive stars spread the elements into space. You will learn about the origin of the building blocks of matter in the Big Bang, and we will speculate on the future of the atoms around us today.

Murphy, Edward

2014-08-06T23:59:59.000Z

200

Photoconductive circuit element pulse generator  

DOE Patents [OSTI]

A pulse generator for characterizing semiconductor devices at millimeter wavelength frequencies where a photoconductive circuit element (PCE) is biased by a direct current voltage source and produces short electrical pulses when excited into conductance by short laser light pulses. The electrical pulses are electronically conditioned to improve the frequency related amplitude characteristics of the pulses which thereafter propagate along a transmission line to a device under test.

Rauscher, Christen (Alexandria, VA)

1989-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

The elements of nuclear power  

SciTech Connect (OSTI)

An introduction to the principles of nuclear fission power generation. Describes the physical processes which occur in a nuclear reactor and discusses the theory behind the calculations. Also covers heat transfer in reactors, thermodynamic power cycles, reactor operators, and radiation shielding. Material covered includes topics on the effects of nuclear radiation on humans, the safety of nuclear reactors and of those parts of the nuclear fuel cycle which deal with fuel element manufacture and the reprocessing of irradiated fuel.

Bennet, D.J.; Thomson, J.R.

1989-01-01T23:59:59.000Z

202

High field strength element/rare earth element fractionation during partial melting in the presence  

E-Print Network [OSTI]

High field strength element/rare earth element fractionation during partial melting in the presence the amount of fractionation between the two decreases. In contrast, the heavy rare earth element partition field strength element/rare earth element fractionation during partial melting in the presence of garnet

van Westrenen, Wim

203

Deepwater Horizon Oil Spill Principal Investigator (PI) Conference Sponsored by the NSTC SOST, hosted by the University of South Florida  

E-Print Network [OSTI]

Deepwater Horizon Oil Spill Principal Investigator (PI) Conference Sponsored Ballroom · Oil/dispersant - extent and fate Tom Ryerson, National Oceanic and Atmospheric Administration · Oil/dispersant - impacts and mitigation in coastal

Meyers, Steven D.

204

Principals' adoption of abstinence-only-until-marriage education as an innovation in Texas public middle schools  

E-Print Network [OSTI]

possible moderating effect on other variables. Findings from this study indicated the middle school principal who was most willing to adopt abstinence-only-until-marriage education programs into his or her school??s curriculum strongly believed abstinence...

Wilson, Kelly Lynn

2005-08-29T23:59:59.000Z

205

High School Principals' Perceptions of Central Office Administrator Support For Planning, Coordinating, and Evaluating Teaching and the Curriculum  

E-Print Network [OSTI]

and the curriculum. The research was guided by a single overarching question: What are high school principal perceptions of support given to them by district central office administrators in the areas of planning, coordinating, and evaluating teaching...

Lawson, Kimberly Kelleher

2011-10-21T23:59:59.000Z

206

Resin infiltration transfer technique  

DOE Patents [OSTI]

A process has been developed for fabricating composite structures using either reaction forming or polymer infiltration and pyrolysis techniques to densify the composite matrix. The matrix and reinforcement materials of choice can include, but are not limited to, silicon carbide (SiC) and zirconium carbide (ZrC). The novel process can be used to fabricate complex, net-shape or near-net shape, high-quality ceramic composites with a crack-free matrix.

Miller, David V. (Pittsburgh, PA); Baranwal, Rita (Glenshaw, PA)

2009-12-08T23:59:59.000Z

207

Image compression technique  

DOE Patents [OSTI]

An image is compressed by identifying edge pixels of the image; creating a filled edge array of pixels each of the pixels in the filled edge array which corresponds to an edge pixel having a value equal to the value of a pixel of the image array selected in response to the edge pixel, and each of the pixels in the filled edge array which does not correspond to an edge pixel having a value which is a weighted average of the values of surrounding pixels in the filled edge array which do correspond to edge pixels; and subtracting the filled edge array from the image array to create a difference array. The edge file and the difference array are then separately compressed and transmitted or stored. The original image is later reconstructed by creating a preliminary array in response to the received edge file, and adding the preliminary array to the received difference array. Filling is accomplished by solving Laplace`s equation using a multi-grid technique. Contour and difference file coding techniques also are described. The techniques can be used in a method for processing a plurality of images by selecting a respective compression approach for each image, compressing each of the images according to the compression approach selected, and transmitting each of the images as compressed, in correspondence with an indication of the approach selected for the image. 16 figs.

Fu, C.Y.; Petrich, L.I.

1997-03-25T23:59:59.000Z

208

The discovery of plutonium reorganized the periodic table and aided the discovery of new elements  

SciTech Connect (OSTI)

The modern Periodic Table derives principally from the work of the great Russian scientist Dimitri Mendeleev, who in 1869 enunciated a 'periodic law' that the properties of the elements are a periodic function of their atomic weights, and arranged the 65 known elements in a 'periodic table'. Fundamentally, every column in the main body of the Periodic Table is a grouping of elements that display similar chemical and physical behavior. Similar properties are therefore exhibited by elements with widely different mass. Chemical periodicity is central to the study of chemistry, and no other generalization comes close to its ability to systematize and rationalize known chemical facts. With the development of atomic theory, and an understanding of the electronic structure of atoms, chemical periodicity and the periodic table now find their natural explanation in the electronic structure of atoms. Moving from left to right along any row, the elements are arranged sequentially according to nuclear charge (the atomic number). Electrons counter balance that nuclear charge, hence each successive element has one more electron in its configuration. The electron configuration, or distribution of electrons among atomic orbitals, may be determined by application of the Pauli principle (paired spin in the same orbital) and the aufbau principle (which outlines the order of filling of electrons into shells of orbitals - s, p, d, f, etc.) such that in a given atom, no two electrons may have all four quantum numbers identical. In 1939, only three elements were known to be heavier than actinium: thorium, protactinium, and uranium. All three exhibited variable oxidation states and a complex chemistry. Thorium, protactinium and uranium were assumed to be d-transition metals and were placed in the Periodic Table under hafnium, tantalum, and tungsten, respectively. By 1940, McMillan and Abelson bombarded uranium atoms with slow neutrons and successfully identified atoms of element 93, which they named neptunium after the planet Neptune. This rapidly set the stage for the discovery of the next succeeding element, plutonium (Seaborg, McMillan, Kennedy, and Wahl, 1940), named after the next planet away from the Sun, Pluto. The newly discovered elements were presumed to fit comfortably in the Periodic Table under rhenium and osmium, respectively. However, subsequent tracer chemical experiments showed that neptunium and plutonium were closer in their chemical properties to uranium than their presumed homologues, rhenium and osmium. Spectroscopic evidence also indicated that the new elements were not typical transition elements, but had f-electrons in their valence shell. Thus, several researchers, including McMillan and Wahl, and Zachariasen at Los Alamos, suggested that these elements might be part of a second inner-transition series in which the 5f-electron subshell was being filled. It was not clear, however, where the new series would begin. McMillian had proposed a 'uraninide series' that started with neptunium, but attempts to isolate elements with atomic numbers 95 and 96 based on assumed similarities to uranium were unsuccessful. Both Wahl and Zacharias en had proposed a thoride series that started with protactinium. In 1944, Seaborg proposed that the series started with thorium, and that all of the elements heavier than actinium constituted an 'actinide' series similar to the lanthanides. Because the 5f-shell began filling in the same relative position as the 4f-shell, the electronic configuration of elements in the two series would be similar. Guided by the hypothesis that elements 95 and 96 were homologues of europium and gadolinium, new experiments were designed and the elements were uniquely synthesized and separated from all others. The new elements were subsequently named americium and curium. Seaborg's 'Actinide Concept' thus played a major role in the discovery of the transplutonium elements. It provided the framework that supported synthesis, isolation, and identification of the succeeding actinide elements berkelium through lawrenci

Clark, David L [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

209

Statistically Equivalent Representative Volume Elements for Unidirectional  

E-Print Network [OSTI]

Statistically Equivalent Representative Volume Elements for Unidirectional Composite the statistically equivalent representative volume element (SERVE) are proposed for fiber-reinforced microstructures using a bilinear cohesive zone law. As introduced in the first article, a combination of statistical

Ghosh, Somnath

210

Elemental Energy | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 No revisionWind,Soils and RocksElement Power Name:

211

Reconstructing equation of state of dark energy with principal component analysis  

E-Print Network [OSTI]

We represent a method to reconstruct the equation of state for dark energy directly from observational Hubble parameter data in a nonparametric way. We use principal component analysis (PCA) to extract the signal from data with noise. In addition, we modify Akaike information criteria (AIC) to guarantee the quality of reconstruction and avoid over-fitting simultaneously. The results show that our method is robust in reconstruction of dark energy equation of state. Although current observational Hubble parameter data alone can not give a strong constraint yet, future observations with more accurate data can help to improve the quality of reconstruction significantly, which is consistent with the results of H.-R. Yu et al.

Qin, Hao-Feng; Wan, Hao-Yi; Zhang, Tong-Jie

2015-01-01T23:59:59.000Z

212

Stacked Switchable Element and Diode Combination  

DOE Patents [OSTI]

A device (10) comprises a semiconductor diode (12) and a switchable element (14) positioned in stacked adjacent relationship so that the semiconductor diode (12) and the switchable element (14) are electrically connected in series with one another. The switchable element (14) is switchable from a low-conductance state to a high-conductance state in response to the application of a forming voltage to the switchable element (14).

Branz, H. M.; Wang, Q.

2006-06-27T23:59:59.000Z

213

Probabilistic finite element analysis of marine risers  

E-Print Network [OSTI]

Review 1. 2 Research Study 10 2 FORMULATION OF THE SECOND ? MOMENT ANALYSIS METHOD 13 2. 1 Finite Element Equations 2. 2 Random Vector Formulation 2. 3 The Correlation Function 2. 4 Random Field Discretization 2. 5 Taylor Series Expansion 2. 6... ILLUSTRATIVE EXAMPLE. . . . . . . . . . . . . . . . . . 4 APPLICATION OF PROBABILISTIC FINITE ELEMENT METHODS TO MARINE RISER ANALYSES 4. 1 Finite Element Model . 4. 1. 1 Formulation of the Equation of Motion 4. 1. 2 Finite Element Discretization 4. 1. 3...

Leder, H. Vern

1990-01-01T23:59:59.000Z

214

Applied Science/Techniques  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to someone by E-mailRadioimmunotherapy ofevolvedApplied Science/Techniques

215

Synthesis of new thermoelectrics using modulated elemental reactants  

SciTech Connect (OSTI)

A series of new, metastable ternary crystalline compounds with the skutterudite crystal structure have been synthesized using modulated elemental reactants. The initial reactants are made up of multiple repeats of a {approximately}25 {angstrom} thick unit containing elemental layers of the desired ternary metal, iron and antimony. Low temperature annealing (150 C) results in interdiffusion of the elemental layers to form amorphous reaction intermediates. Annealing these intermediates at temperatures between 200 C and 250 C results in exothermic crystallization of the desired skutterudite crystal structure. Most of the new compounds prepared are only kinetically stable, decomposing exothermically to form thermodynamically more stable mixtures of binary compounds and elements. Low angle x-ray diffraction studies show that the resulting films are exceedingly smooth. These films have an ideal geometry for measuring properties of importance for thermoelectric devices--the Seebeck coefficient and the electrical conductivity. Thermal conductivity can be measured using a modification of the 3{omega} technique of Cahill. Samples can be produced rapidly, allowing for systematic screening and subsequent optimization as a function of composition and doping levels.

Hornbostel, M.D.; Sellinschegg, H.; Johnson, D.C.

1997-07-01T23:59:59.000Z

216

Rare Earth Element Mines, Deposits, and Occurrences  

E-Print Network [OSTI]

Rare Earth Element Mines, Deposits, and Occurrences by Greta J. Orris1 and Richard I. Grauch2 Open. For many years, the deposit at Mountain Pass was the world's dominant source of rare earth elements of rare earth element concentration. Many of the occurrences have not been well studied and the economic

Torgersen, Christian

217

Characterization of electrodeposited elemental boron  

SciTech Connect (OSTI)

Elemental boron was produced through electrowinning from potassium fluoroborate dissolved in a mixture of molten potassium fluoride and potassium chloride. The characteristics of the electrodeposited boron (raw boron) as well as the water and acid-leached product (processed boron) were studied. The chemical purity, specific surface area, size distribution of particles and X-ray crystallite size of the boron powders were investigated. The morphology of the deposits was examined using scanning electron microscopy (SEM). The chemical state of the matrix, as well as the impurity phases present in them, was established using X-ray photoelectron spectroscopy (XPS). In order to interpret and understand the results obtained, a thermodynamic analysis was carried out. The gas-phase corrosion in the head space as well as the chemistry behind the leaching process were interpreted using this analysis. The ease of oxidation of these powders in air was investigated using differential thermal analysis (DTA) coupled with thermogravimetry (TG). From the results obtained in this study it was established that elemental boron powder with a purity of 95-99% could be produced using a high temperature molten salt electrowinning process. The major impurities were found to be oxygen, carbon, iron and nickel.

Jain, Ashish [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India); Anthonysamy, S. [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India)], E-mail: sas@igcar.gov.in; Ananthasivan, K.; Ranganathan, R. [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India); Mittal, Vinit; Narasimhan, S.V. [Water and Steam Chemistry Division, BARC (F), Kalpakkam, 603102 (India); Vasudeva Rao, P.R. [Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603102 (India)

2008-07-15T23:59:59.000Z

218

E-Print Network 3.0 - approximating principal manifolds Sample...  

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

Sciences 6 Dyson series Lie manifolds Summary: )u(0, y)dy. Main technique: Approximate GL t (x, y). Victor Nistor Dyson series, Lie Manifolds, & PDEs... manifolds for the...

219

Variance reduction and outlier identification for IDDQ testing of integrated chips using principal component analysis  

E-Print Network [OSTI]

of an industrial chip fabricated in 130 nm technology. It is shown that the proposed method achieves significant variance reduction and identifies many outliers that escape identification by other established techniques. For example, it identifies many...

Balasubramanian, Vijay

2007-04-25T23:59:59.000Z

220

Min CSP on Four Elements: Moving Beyond Submodularity  

E-Print Network [OSTI]

We report new results on the complexity of the valued constraint satisfaction problem (VCSP). Under the unique games conjecture, the approximability of finite-valued VCSP is fairly well-understood. However, there is yet no characterisation of VCSPs that can be solved exactly in polynomial time. This is unsatisfactory, since such results are interesting from a combinatorial optimisation perspective; there are deep connections with, for instance, submodular and bisubmodular minimisation. We consider the Min and Max CSP problems (i.e. where the cost functions only attain values in {0,1}) over four-element domains and identify all tractable fragments. Similar classifications were previously known for two- and three-element domains. In the process, we introduce a new class of tractable VCSPs based on a generalisation of submodularity. We also extend and modify a graph-based technique by Zivny and Kolmogorov (originally introduced by Takhanov) for efficiently obtaining hardness results in our setting. This allow us...

Jonsson, Peter; Thapper, Johan

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

Higher-order adaptive finite-element methods for Kohn–Sham density functional theory  

SciTech Connect (OSTI)

We present an efficient computational approach to perform real-space electronic structure calculations using an adaptive higher-order finite-element discretization of Kohn–Sham density-functional theory (DFT). To this end, we develop an a priori mesh-adaption technique to construct a close to optimal finite-element discretization of the problem. We further propose an efficient solution strategy for solving the discrete eigenvalue problem by using spectral finite-elements in conjunction with Gauss–Lobatto quadrature, and a Chebyshev acceleration technique for computing the occupied eigenspace. The proposed approach has been observed to provide a staggering 100–200-fold computational advantage over the solution of a generalized eigenvalue problem. Using the proposed solution procedure, we investigate the computational efficiency afforded by higher-order finite-element discretizations of the Kohn–Sham DFT problem. Our studies suggest that staggering computational savings—of the order of 1000-fold—relative to linear finite-elements can be realized, for both all-electron and local pseudopotential calculations, by using higher-order finite-element discretizations. On all the benchmark systems studied, we observe diminishing returns in computational savings beyond the sixth-order for accuracies commensurate with chemical accuracy, suggesting that the hexic spectral-element may be an optimal choice for the finite-element discretization of the Kohn–Sham DFT problem. A comparative study of the computational efficiency of the proposed higher-order finite-element discretizations suggests that the performance of finite-element basis is competing with the plane-wave discretization for non-periodic local pseudopotential calculations, and compares to the Gaussian basis for all-electron calculations to within an order of magnitude. Further, we demonstrate the capability of the proposed approach to compute the electronic structure of a metallic system containing 1688 atoms using modest computational resources, and good scalability of the present implementation up to 192 processors.

Motamarri, P. [Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109 (United States)] [Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109 (United States); Nowak, M.R. [Department of Electrical Engineering, University of Michigan, Ann Arbor, MI 48109 (United States)] [Department of Electrical Engineering, University of Michigan, Ann Arbor, MI 48109 (United States); Leiter, K.; Knap, J. [U.S. Army Research Labs, Aberdeen Proving Ground, Aberdeen, MD 21001 (United States)] [U.S. Army Research Labs, Aberdeen Proving Ground, Aberdeen, MD 21001 (United States); Gavini, V., E-mail: vikramg@umich.edu [Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109 (United States)

2013-11-15T23:59:59.000Z

222

Data transmission element for downhole drilling components  

DOE Patents [OSTI]

A robust data transmission element for transmitting information between downhole components, such as sections of drill pipe, in the presence of hostile environmental conditions, such as heat, dirt, rocks, mud, fluids, lubricants, and the like. The data transmission element components include a generally U-shaped annular housing, a generally U-shaped magnetically conductive, electrically insulating element such as ferrite, and an insulated conductor. Features on the magnetically conducting, electrically insulating element and the annular housing create a pocket when assembled. The data transmission element is filled with a polymer to retain the components within the annular housing by filling the pocket with the polymer. The polymer can bond with the annular housing and the insulated conductor but preferably not the magnetically conductive, electrically insulating element. A data transmission element is mounted within a recess proximate a mating surface of a downhole drilling component, such as a section of drill pipe.

Hall, David R. (Provo, UT); Hall, Jr., H. Tracy (Provo, UT); Pixton, David S. (Lehi, UT); Dahlgren, Scott (Provo, UT); Fox, Joe (Spanish Fork, UT); Sneddon, Cameron (Provo, UT); Briscoe, Michael (Lehi, UT)

2006-01-31T23:59:59.000Z

223

Ecotoxicity of rare earth elements Rare earth elements (REEs) or rare earth metals is the  

E-Print Network [OSTI]

Ecotoxicity of rare earth elements Info Sheet Rare earth elements (REEs) or rare earth metals isolated. Actually, most rare earth elements exist in the Earth's crust in higher concentrations than though most people have never heard of rare earth elements, sev- eral of them govern mankind's modern

Wehrli, Bernhard

224

Element Abundances at High Redshifts  

E-Print Network [OSTI]

I review measurements of element abundances in different components of the high redshift universe, including the Lyman alpha forest, damped Lyman alpha systems, and Lyman break galaxies. Although progress is being made in all three areas, recent work has also produced some surprises and shown that established ideas about the nature of the damped Lyman alpha systems in particular may be too simplistic. Overall, our knowledge of metal abundances at high z is still very sketchy. Most significantly, there seems to be an order of magnitude shortfall in the comoving density of metals which have been measured up to now compared with those produced by the star formation activity seen in Lyman break galaxies. At least some of the missing metals are likely to be in hot gas in galactic halos and proto-clusters.

Max Pettini

1999-02-11T23:59:59.000Z

225

Spatiotemporal distribution of airborne elements monitored with the moss bags technique in the Greater Thriasion Plain,  

E-Print Network [OSTI]

. Heavy metals . Sodium . Aluminum . Chlorine . Calcium . Scandium . Titanium . Vanadium . Chromium Increased levels of heavy metals have been monitored in many urban and industrial areas but also in rural to assess metal pollution is by conducting "biomonitoring", that is, by measuring the accumulation

Palmer, Michael W.

226

Coupled near and far field thermal plume analysis using finite element techniques  

E-Print Network [OSTI]

The use of the open cycle cooling process for thermal power plants requires significant effluent discharges into aquatic environments. Both engineering and environmental considerations require accurate prediction of resulting ...

Kaufman, John T.

1981-01-01T23:59:59.000Z

227

Stein's method, heat kernel, and traces of powers of elements of compact Lie groups  

E-Print Network [OSTI]

Combining Stein's method with heat kernel techniques, we show that the trace of the jth power of an element of U(n,C), USp(n,C) or SO(n,R) has a normal limit with error term of order j/n. In contrast to previous works, here j may be growing with n. The technique should prove useful in the study of the value distribution of approximate eigenfunctions of Laplacians.

Jason Fulman

2010-05-07T23:59:59.000Z

228

Microwave Plasma Monitoring System For Real-Time Elemental Analysis  

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

air for the presence of minor amounts of elements, particularly transition metals, rare earth elements, actinides, and alkali and alkaline earth elements. The invention apparatus...

229

Proposed Data Elements for PARS II Web Application | Department...  

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

Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application Proposed Data Elements for PARS II Web Application More Documents &...

230

Quantifying the Effect of the Principal-Agent Problem on USResidential Energy Use  

SciTech Connect (OSTI)

The International Energy Agency (IEA) initiated andcoordinated this project to investigate the effects of market failures inthe end-use of energy that may isolate some markets or portions thereoffrom energy price signals in five member countries. Quantifying theamount of energy associated with market failures helps to demonstrate thesignificance of energy efficiency policies beyond price signals. In thisreport we investigate the magnitude of the principal-agent (PA) problemaffecting four of the major energy end uses in the U.S. residentialsector: refrigeration, water heating, space heating, and lighting. Usingdata from the American Housing Survey, we develop a novel approach toclassifying households into a PA matrix for each end use. End use energyvalues differentiated by housing unit type from the Residential EnergyConsumption Survey were used to estimate the final and primary energy useassociated with the PA problem. We find that the 2003 associated siteenergy use from these four end uses totaled over 3,400 trillion Btu,equal to 35 percent of the site energy consumed by the residentialsector.

Murtishaw, Scott; Sathaye, Jayant

2006-08-12T23:59:59.000Z

231

GIS solutions for ecosystem management in developing countries: A case study of Sao Tome and Principe  

SciTech Connect (OSTI)

The purpose of this paper is to promote awareness of the application of the Geographic information system (GIS) technology to the management of ecosystems in developing countries. The adoptation of systematic environmental research and management techniques by national and local conservation programs helps ensure the sustainability of important biological resources.

Barnes, L.; Barrasso, T. [Booz, Allen & Hamilton Inc., McLean, VA (United States); Pinto da Costa, H. [ECO Sao Tome e Principe (Sao Tome and Principe)

1995-12-01T23:59:59.000Z

232

Trace element analysis of Texas lignite  

E-Print Network [OSTI]

or in the planning stages, Near surface lignite re- sources are estimated to be 21 billion metric tons in Texas, while deep basin reserves are estimated at 31 billion metric tons. Near (3] surface reserves alone could fulfill Texas' electrical needs for 100 years... for environmental and health concerns trace element characterization of lignites is important. A needed avenue of research is charact- erization of trace element pathways in lignite fired power plants. :hat is to say what percentage of a certain element...

Mahar, Sean

1982-01-01T23:59:59.000Z

233

Two position optical element actuator device  

DOE Patents [OSTI]

The present invention is a two position optical element actuator device utilizing a powered means to hold an actuation arm, to which an optical element is attached, in a first position. A non-powered means drives the actuation arm to a second position, when the powered means ceases to receive power. The optical element may be a electromagnetic (EM) radiation or particle source, an instrument, or EM radiation or particle transmissive, reflective or absorptive elements. A bearing is used to transfer motion and smoothly transition the actuation arm from the first to second position.

Holdener, Fred R. (Tracy, CA); Boyd, Robert D. (Livermore, CA)

2002-01-01T23:59:59.000Z

234

PARTIALLY PENALIZED IMMERSED FINITE ELEMENT METHODS ...  

E-Print Network [OSTI]

each interface element, it uses IFE functions constructed with piecewise ...... strate this, we plot errors of a classic bilinear IFE solution and a NPP IFE solution in.

2015-01-05T23:59:59.000Z

235

Finite Element Modeling of Drilling Using DEFORM  

E-Print Network [OSTI]

Vijayaraghavan, A. (2005), “Drilling of Fiber- ReinforcedFINITE ELEMENT MODELING OF DRILLING USING DEFORM J. Gardner,of Comprehensive Drilling Simulation Tool” ABSTRACT DEFORM-

Gardner, Joel D.; Dornfeld, David

2006-01-01T23:59:59.000Z

236

Method of lightening radiation darkened optical elements  

DOE Patents [OSTI]

A method of lightening a radiation-darkened optical element in wich visible optical energy or electromagnetic radiation having a wavelength in the range of from about 2000 to about 20,000 angstroms is directed into the radiation-darkened optical element; the method may be used to lighten radiation-darkened optical element in-situ during the use of the optical element to transmit data by electronically separating the optical energy from the optical output by frequency filtering, data cooling, or interlacing the optic energy between data intervals.

Reich, Frederich R. (Richland, WA); Schwankoff, Albert R. (W. Richland, WA)

1980-01-01T23:59:59.000Z

237

Finite element approximation of coupled seismic and ...  

E-Print Network [OSTI]

layer, having a thickness of about 10 nm. Finite element approximation of coupled seismic and electromagnetic waves in gas hydrate-bearing sediments – p.

zyserman

238

Electronic Structure of the Heaviest Elements  

E-Print Network [OSTI]

uranium resemble those of these 4d and 5d elements and for this reason most of the textbooks and standard works on chemistry

Seaborg, G.T.

2008-01-01T23:59:59.000Z

239

Spectral analysis method for detecting an element  

DOE Patents [OSTI]

A method for detecting an element is described and which includes the steps of providing a gamma-ray spectrum which has a region of interest which corresponds with a small amount of an element to be detected; providing nonparametric assumptions about a shape of the gamma-ray spectrum in the region of interest, and which would indicate the presence of the element to be detected; and applying a statistical test to the shape of the gamma-ray spectrum based upon the nonparametric assumptions to detect the small amount of the element to be detected.

Blackwood, Larry G [Idaho Falls, ID; Edwards, Andrew J [Idaho Falls, ID; Jewell, James K [Idaho Falls, ID; Reber, Edward L [Idaho Falls, ID; Seabury, Edward H [Idaho Falls, ID

2008-02-12T23:59:59.000Z

240

SEED: ATP metabolism and its impact on biofilms Principal Investigators: Mark P. Brynildsen and A. James Link  

E-Print Network [OSTI]

SEED: ATP metabolism and its impact on biofilms Principal Investigators: Mark P. Brynildsen and A was to define the role of ATP metabolism in the formation, physiology, and material properties of biofilms. Using computational and experimental approaches we found that efficient ATP production and consumption

Petta, Jason

Note: This page contains sample records for the topic "techniques principal elements" 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

Research With Students My principal research activities lie in information systems security with particular emphasis on access control  

E-Print Network [OSTI]

of security, and secure transaction processing. My recent research has expanded beyond information systemsResearch With Students My principal research activities lie in information systems security and mining, semantic web and multimedia delivery. 1 Major Results · Security solutions for workflow systems

242

Preface and Acknowledgments This book was written with three principal goals in mind. Firstly, it has been designed as  

E-Print Network [OSTI]

function of a discrete random variable and the probability density function of a continuous random variablePreface and Acknowledgments This book was written with three principal goals in mind. Firstly theory. The only assumed background knowledge is that of calculus, which makes it a suitable text

Stewart, William J.

243

TRAVEL ACCIDENT INSURANCE The maximum benefit (Principal Sum) is $100,000 of Accidental Death and Dismemberment (Age  

E-Print Network [OSTI]

- 46 - TRAVEL ACCIDENT INSURANCE CHUBB Benefits The maximum benefit (Principal Sum) is $100 of the accident, the policy will pay as follows: Payment Schedule Injury or Dismemberment Policy Pays Loss of Life to seven days Aggregate Limit of Insurance: $1,000,000 per Accident Coverage y 24-Hour Business Travel y

244

TRAVEL ACCIDENT INSURANCE The maximum benefit (Principal Sum) is $100,000 of Accidental Death and Dismemberment (Age  

E-Print Network [OSTI]

- 53 - TRAVEL ACCIDENT INSURANCE CHUBB Benefits The maximum benefit (Principal Sum) is $100 of the accident, the policy will pay as follows: Payment Schedule Injury or Dismemberment Policy Pays Loss of Life to seven days Aggregate Limit of Insurance: $1,000,000 per Accident NOTE: The insurance coverage described

245

An Assessment of Some Preconditioning Techniques in Shell Michele BENZI x , Reijo KOUHIA --and Miroslav T UMA z  

E-Print Network [OSTI]

words preconditioning, conjugate gradient, finite elements, shells Preconditioning Techniques Republic Revised manuscript submitted to Communications in Numerical Methods in Engineering, February 1998 Summary Preconditioned Krylov subspace methods have proved to be efficient in solving large, sparse linear

Tùma, Miroslav

246

THE RAVE CATALOG OF STELLAR ELEMENTAL ABUNDANCES: FIRST DATA RELEASE  

SciTech Connect (OSTI)

We present chemical elemental abundances for 36,561 stars observed by the RAdial Velocity Experiment (RAVE), an ambitious spectroscopic survey of our Galaxy at Galactic latitudes |b| > 25 Degree-Sign and with magnitudes in the range 9 elements Mg, Al, Si, Ca, Ti, Fe, and Ni, with a mean error of {approx}0.2 dex, as judged from accuracy tests performed on synthetic and real spectra. Abundances are estimated through a dedicated processing pipeline in which the curve of growth of individual lines is obtained from a library of absorption line equivalent widths to construct a model spectrum that is then matched to the observed spectrum via a {chi}{sup 2} minimization technique. We plan to extend this pipeline to include estimates for other elements, such as oxygen and sulfur, in future data releases.

Boeche, C.; Williams, M.; De Jong, R. S.; Steinmetz, M. [Leibniz-Institut fuer Astrophysik Potsdam (AIP), D-14482 Potsdam (Germany); Siebert, A.; Bienayme, O. [Observatoire Astronomique de Strasbourg, Universite de Strasbourg, CNRS, UMR 7550, F-67000 Strasbourg (France); Fulbright, J. P.; Ruchti, G. R. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Bland-Hawthorn, J. [Sydney Institute for Astronomy, School of Physics A28, University of Sydney, NSW 2006 (Australia); Campbell, R. [Department of Physics and Astronomy, Western Kentucky University, Bowling Green, KY (United States); Freeman, K. C. [Research School of Astronomy and Astrophysics, Australia National University, Weston Creek, Canberra ACT 2611 (Australia); Gibson, B. K. [Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE (United Kingdom); Gilmore, G. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); Grebel, E. K. [Astronomisches Rechen-Institut, Zentrum fuer Astronomie der Universitaet Heidelberg, D-69120 Heidelberg (Germany); Helmi, A. [Kapteyn Astronomical Institute, University of Groningen, 9700 AV Groningen (Netherlands); Munari, U. [INAF Osservatorio Astronomico di Padova, Asiago I-36012 (Italy); Navarro, J. F. [Department of Physics and Astronomy, University of Victoria, Victoria BC V8W 3P6 (Canada); Parker, Q. A.; Reid, W. [Department of Physics and Astronomy, Faculty of Sciences, Macquarie University, Sydney, NSW 2109 (Australia); Seabroke, G. M. [Mullard Space Science Laboratory, University College London, Holmbury, St. Mary RH5 6NT (United Kingdom); and others

2011-12-15T23:59:59.000Z

247

Finite element analysis of the distortion of a crystal monochromator from synchrotron radiation thermal loading  

SciTech Connect (OSTI)

The first crystal of the Brown-Hower x-ray monochromator of the LBL-EXXON 54 pole wiggler beamline at Stanford Synchrotron Radiation Laboratory (SSRL) is subjected to intense synchrotron radiation. To provide an accurate thermal/structural analysis of the existing monochromator design, a finite element analysis (FEA) was performed. A very high and extremely localized heat flux is incident on the Si (220) crystal. The crystal, which possesses pronouncedly temperature-dependent orthotropic properties, in combination with the localized heat load, make the analysis ideally suited for finite element techniques. Characterization of the incident synchrotron radiation is discussed, followed by a review of the techniques employed in modeling the monochromator and its thermal/structural boundary conditions. The results of the finite element analysis, three-dimensional temperature distributions, surface displacements and slopes, and stresses, in the area of interest, are presented. Lastly, the effects these results have on monochromator output flux and resolution are examined.

Edwards, W.R.; Hoyer, E.H.; Thompson, A.C.

1985-10-01T23:59:59.000Z

248

Office of Enterprise Assessments Review of Field Element Line...  

Energy Savers [EERE]

action management, and continuous improvement (lessons learnedoperating experiencebest practices). For each assurance element, SFO defined sub-elements and associated...

249

The Superheavy Elements and Anti-Gravity  

SciTech Connect (OSTI)

The essence of any propulsion concept is to overcome gravity. Anti-gravity is a natural means to achieve this. Thus, the technology to pursue anti-gravity, by using superheavy elements, may provide a new propulsion paradigm. The theory of superluminal relativity provides a hypothesis for existence of elements with atomic number up to Z = 145, some of which may possess anti-gravity properties. Analysis results show that curved space-time exists demonstrating both gravitic and anti-gravitic properties not only around nuclei but inside the nuclei as well. Two groups of elements (Z < 64 and 63 < Z <145) exist that demonstrate these capabilities. The nuclei of the first group of elements have the masses with only the property of gravity. The nuclei of the elements of the second group have the masses with both properties: gravity and anti-gravity in two different ranges of curved space-time around the nuclei.. The hypothetical element with Z = 145 is the unique among all elements whose nucleus has only anti-gravity property. It is proposed that this element be named Hawking, in honour of Stephen W. Hawking.

Anastasovski, Petar K. [Department of Physics, Faculty of Technology and Metallurgy, Saints Cyril and Methodius University, Skopje (Macedonia, The Former Yugoslav Republic of)

2004-02-04T23:59:59.000Z

250

The New Element Curium (Atomic Number 96)  

DOE R&D Accomplishments [OSTI]

Two isotopes of the element with atomic number 96 have been produced by the helium-ion bombardment of plutonium. The name curium, symbol Cm, is proposed for element 96. The chemical experiments indicate that the most stable oxidation state of curium is the III state.

Seaborg, G. T.; James, R. A.; Ghiorso, A.

1948-00-00T23:59:59.000Z

251

Modeling and Driving Piezoelectric Resonant Blade Elements  

E-Print Network [OSTI]

for extracting the parameters of the PRB equivalent circuit model: two are direct methods and one is basedrf rjf Figure 3. Equivalent circuit model of the PRB element. Cin is the dielectric capacitance element will bend the van attached to it and the whole structure will vibrate. Optimum operation

252

INTRODUCTION TO THE FINITE ELEMENT METHOD  

E-Print Network [OSTI]

in popularity with the finite difference method in the areas of heat transfer and fluid mechanics. 1DRAFT Chapter 1 INTRODUCTION TO THE FINITE ELEMENT METHOD 1.1 Historical perspective: the origins of the finite el- ement method The finite element method constitutes a general tool for the numerical solution

California at Berkeley, University of

253

3-D Finite Element Electromagnetic and Stress Analyses of the JET LB-SRP Divertor Element (Tungsten Lamella Design)  

E-Print Network [OSTI]

3-D Finite Element Electromagnetic and Stress Analyses of the JET LB-SRP Divertor Element (Tungsten Lamella Design)

254

Low Temperature Material Bonding Technique  

DOE Patents [OSTI]

A method of performing a lower temperature bonding technique to bond together two mating pieces of glass includes applying a sodium silicate aqueous solution between the two pieces.

Ramsey, J. Michael (Knoxville, TN); Foote, Robert S. (Oak Ridge, TN)

2000-10-10T23:59:59.000Z

255

Low temperature material bonding technique  

DOE Patents [OSTI]

A method of performing a lower temperature bonding technique to bond together two mating pieces of glass includes applying a sodium silicate aqueous solution between the two pieces.

Ramsey, J. Michael (Knoxville, TN); Foote, Robert S. (Oak Ridge, TN)

2002-02-12T23:59:59.000Z

256

Element 74, the Wolfram Versus Tungsten Controversy  

SciTech Connect (OSTI)

Two and a quarter centuries ago, a heavy mineral ore was found which was thought to contain a new chemical element called heavy stone (or tungsten in Swedish). A few years later, the metal was separated from its oxide and the new element (Z=74) was called wolfram. Over the years since that time, both the names wolfram and tungsten were attached to this element in various countries. Sixty years ago, IUPAC chose wolfram as the official name for the element. A few years later, under pressure from the press in the USA, the alternative name tungsten was also allowed by IUPAC. Now the original, official name 'wolfram' has been deleted by IUPAC as one of the two alternate names for the element. The history of this controversy is described here.

Holden,N.E.

2008-08-11T23:59:59.000Z

257

Sorption of redox-sensitive elements: critical analysis  

SciTech Connect (OSTI)

The redox-sensitive elements (Tc, U, Np, Pu) discussed in this report are of interest to nuclear waste management due to their long-lived isotopes which have a potential radiotoxic effect on man. In their lower oxidation states these elements have been shown to be highly adsorbed by geologic materials occurring under reducing conditions. Experimental research conducted in recent years, especially through the Waste Isolation Safety Assessment Program (WISAP) and Waste/Rock Interaction Technology (WRIT) program, has provided extensive information on the mechanisms of retardation. In general, ion-exchange probably plays a minor role in the sorption behavior of cations of the above three actinide elements. Formation of anionic complexes of the oxidized states with common ligands (OH/sup -/, CO/sup - -//sub 3/) is expected to reduce adsorption by ion exchange further. Pertechnetate also exhibits little ion-exchange sorption by geologic media. In the reduced (IV) state, all of the elements are highly charged and it appears that they form a very insoluble compound (oxide, hydroxide, etc.) or undergo coprecipitation or are incorporated into minerals. The exact nature of the insoluble compounds and the effect of temperature, pH, pe, other chemical species, and other parameters are currently being investigated. Oxidation states other than Tc (IV,VII), U(IV,VI), Np(IV,V), and Pu(IV,V) are probably not important for the geologic repository environment expected, but should be considered especially when extreme conditions exist (radiation, temperature, etc.). Various experimental techniques such as oxidation-state analysis of tracer-level isotopes, redox potential measurement and control, pH measurement, and solid phase identification have been used to categorize the behavior of the various valence states.

Strickert, R.G.

1980-12-01T23:59:59.000Z

258

Control volume finite element method with multidimensional edge element Scharfetter-Gummel upwinding. Part 1, formulation.  

SciTech Connect (OSTI)

We develop a new formulation of the Control Volume Finite Element Method (CVFEM) with a multidimensional Scharfetter-Gummel (SG) upwinding for the drift-diffusion equations. The formulation uses standard nodal elements for the concentrations and expands the flux in terms of the lowest-order Nedelec H(curl; {Omega})-compatible finite element basis. The SG formula is applied to the edges of the elements to express the Nedelec element degree of freedom on this edge in terms of the nodal degrees of freedom associated with the endpoints of the edge. The resulting upwind flux incorporates the upwind effects from all edges and is defined at the interior of the element. This allows for accurate evaluation of integrals on the boundaries of the control volumes for arbitrary quadrilateral elements. The new formulation admits efficient implementation through a standard loop over the elements in the mesh followed by loops over the element nodes (associated with control volume fractions in the element) and element edges (associated with flux degrees of freedom). The quantities required for the SG formula can be precomputed and stored for each edge in the mesh for additional efficiency gains. For clarity the details are presented for two-dimensional quadrilateral grids. Extension to other element shapes and three dimensions is straightforward.

Bochev, Pavel Blagoveston

2011-06-01T23:59:59.000Z

259

Table of Contents Problem Solving Techniques 5  

E-Print Network [OSTI]

element . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 1.13 Robot battery capacity house majority . . . . . . . . . . . . . . . . . . . . . . 33 3.7 Load balancing

Aziz, Adnan

260

FORENSIC TECHNIQUES FOR CELL PHONES  

E-Print Network [OSTI]

June 2007 FORENSIC TECHNIQUES FOR CELL PHONES FORENSIC TECHNIQUES FOR CELL PHONES Shirley Radack cell phones are widely used for both personal and professional applications, the technology of cell forensics usually do not cover cell phones, especially those with advanced capabilities. The digital

Note: This page contains sample records for the topic "techniques principal elements" 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

An iterative technique for solving equations of statistical equilibrium  

E-Print Network [OSTI]

Superlevel partitioning is combined with a simple relaxation procedure to construct an iterative technique for solving equations of statistical equilibrium. In treating an $N$-level model atom, the technique avoids the $N^{3}$ scaling in computer time for direct solutions with standard linear equation routines and also does not fail at large $N$ due to the accumulation of round-off errors. In consequence, the technique allows detailed model atoms with $N \\ga 10^{3}$, such as those required for iron peak elements, to be incorporated into diagnostic codes for analysing astronomical spectra. Tests are reported for a 394-level Fe II ion and a 1266-level Ni I--IV atom.

L. B. Lucy

2001-03-21T23:59:59.000Z

262

Method for quantitative determination and separation of trace amounts of chemical elements in the presence of large quantities of other elements having the same atomic mass  

DOE Patents [OSTI]

Photoionization via autoionizing atomic levels combined with conventional mass spectroscopy provides a technique for quantitative analysis of trace quantities of chemical elements in the presence of much larger amounts of other elements with substantially the same atomic mass. Ytterbium samples smaller than 10 ng have been detected using an ArF* excimer laser which provides the atomic ions for a time-of-flight mass spectrometer. Elemental selectivity of greater than 5:1 with respect to lutetium impurity has been obtained. Autoionization via a single photon process permits greater photon utilization efficiency because of its greater absorption cross section than bound-free transitions, while maintaining sufficient spectroscopic structure to allow significant photoionization selectivity between different atomic species. Separation of atomic species from others of substantially the same atomic mass is also described.

Miller, C.M.; Nogar, N.S.

1982-09-02T23:59:59.000Z

263

Seismic data interpretation using the Hough transform and principal component analysis This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network [OSTI]

Seismic data interpretation using the Hough transform and principal component analysis This article) 61­73 doi:10.1088/1742-2132/8/1/008 Seismic data interpretation using the Hough transform and delineate complex salt bodies from seismic exploration profiles: Hough transform and principal component

Martin, Roland

264

Review : integration of EMI technique with global vibration technique  

E-Print Network [OSTI]

In the last decade, the development of Structural Health Monitoring (SHM) has been skyrocketing because of the serious consequences that come with structural failure. Traditional damage detection techniques, also known as ...

Ni, Suteng

2013-01-01T23:59:59.000Z

265

High voltage power supply systems for electron beam and plasma technologies. Its new element base  

SciTech Connect (OSTI)

Transforming technique and high voltage technique supplementing each other more and more unite in indivisible constructions of modern apparatuses and systems and applicated in modern technologies providing its high efficiency. Specially worked out, ecologically clean, inertial, inflammable perfluororganic liquid is used in elements and electronic apparatuses simultaneously as insulating and cooling media. This liquid is highly fluid, fills tiny cavities in construction elements and in the places of high concentration of losses, where maximum local overheating of active parts or apparatus constructions takes place, it transforms to boiling state with highly intensive taking off of heat energy from cooled surface point. For instance, being cooled by mentioned perfluororganic liquid, copper wire can conduct current to 50 A/mm{sup 2} density, but in ordinary conditions of transformers, reactors and busses, current density can reach only few Amperes. Possibility of considerable increasing of current density, that is reached by means of intensive cooling, provided by worked out liquid, and taking into account its incredibly high insulating features (liquid has electric strength to 50 KV/mm) allows to provide optimum heat regime of active parts of transformers. reactors, condenser, semiconductor devices, resistors, construction elements and electrotechnical apparatus in general. Particularly high effect of decreasing of weight and dimensions characteristics of elements and electrotechnical apparatus in general can be reached under working out of special constructions of each element and apparatus details, adapted to use of mentioned liquid as insulating and cooling media.

Dermengi, P.G.; Kureghan, A.S.; Pokrovsky, S.V.; Tchvanov, V.A.

1994-12-31T23:59:59.000Z

266

Determining Plutonium Mass in Spent Fuel with Nondestructive Assay Techniques -- Preliminary Modeling Results Emphasizing Integration among Techniques  

SciTech Connect (OSTI)

There are a variety of motivations for quantifying Pu in spent (used) fuel assemblies by means of nondestructive assay (NDA) including the following: strengthen the capabilities of the International Atomic Energy Agencies to safeguards nuclear facilities, quantifying shipper/receiver difference, determining the input accountability value at reprocessing facilities and providing quantitative input to burnup credit determination for repositories. For the purpose of determining the Pu mass in spent fuel assemblies, twelve NDA techniques were identified that provide information about the composition of an assembly. A key point motivating the present research path is the realization that none of these techniques, in isolation, is capable of both (1) quantifying the elemental Pu mass of an assembly and (2) detecting the diversion of a significant number of pins. As such, the focus of this work is determining how to best integrate 2 or 3 techniques into a system that can quantify elemental Pu and to assess how well this system can detect material diversion. Furthermore, it is important economically to down-select among the various techniques before advancing to the experimental phase. In order to achieve this dual goal of integration and down-selection, a Monte Carlo library of PWR assemblies was created and is described in another paper at Global 2009 (Fensin et al.). The research presented here emphasizes integration among techniques. An overview of a five year research plan starting in 2009 is given. Preliminary modeling results for the Monte Carlo assembly library are presented for 3 NDA techniques: Delayed Neutrons, Differential Die-Away, and Nuclear Resonance Fluorescence. As part of the focus on integration, the concept of"Pu isotopic correlation" is discussed and the role of cooling time determination.

Tobin, S. J.; Fensin, M. L.; Ludewigt, B. A.; Menlove, H. O.; Quiter, B. J.; Sandoval, N. P.; Swinhoe, M. T.; Thompson, S. J.

2009-08-03T23:59:59.000Z

267

Ion processing element with composite media  

DOE Patents [OSTI]

An ion processing element employing composite media disposed in a porous substrate, for facilitating removal of selected chemical species from a fluid stream. The ion processing element includes a porous fibrous glass substrate impregnated by composite media having one or more active components supported by a matrix material of polyacrylonitrile. The active components are effective in removing, by various mechanisms, one or more constituents from a fluid stream passing through the ion processing element. Due to the porosity and large surface area of both the composite medium and the substrate in which it is disposed, a high degree of contact is achieved between the active component and the fluid stream being processed. Further, the porosity of the matrix material and the substrate facilitates use of the ion processing element in high volume applications where it is desired to effectively process a high volume flows.

Mann, Nick R. (Blackfoot, ID); Tranter, Troy J. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Sebesta, Ferdinand (Prague, CZ)

2009-03-24T23:59:59.000Z

268

THE NEW ELEMENT CALIFORNIUM (ATOMIC NUMBER 98)  

E-Print Network [OSTI]

No, 66) as the names americium (No, curium (No, andthe production of element 98. Americium, the source for theneutron-irradiated americium in which it was produced as a

Thompson, S.G.; Street, K.,Jr.; Ghiorso, A.; Seaborg, G.T.

2008-01-01T23:59:59.000Z

269

Magnetostatics of synthetic ferrimagnet elements Olivier Fruchart  

E-Print Network [OSTI]

coupled antiferromagnetically thanks to the RKKY interaction present in an ultrathin metal spacer layer in flat elements as dipolar field are very short-ranged in two dimensions12 . In this Letter we re- port

270

Quantum Algorithms for Element Distinctness Harry Buhrman  

E-Print Network [OSTI]

Quantum Algorithms for Element Distinctness Harry Buhrman Christoph D¨urr Mark Heiligman§ Peter, France. Email: durr@lri.fr. §NSA, Suite 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig

Magniez, Frédéric

271

Quantum Algorithms for Element Distinctness Harry Buhrman  

E-Print Network [OSTI]

Quantum Algorithms for Element Distinctness Harry Buhrman£ Christoph D¨urr� Mark Heiligman� Peter, France. Email: durr@lri.fr. �NSA, Suite 6111, Fort George G. Meade, MD 20755, USA. Email: mheilig

de Wolf, Ronald

272

Stretchable semiconductor elements and stretchable electrical circuits  

DOE Patents [OSTI]

The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.

Rogers, John A. (Champaign, IL); Khang, Dahl-Young (Seoul, KR); Menard, Etienne (Durham, NC)

2009-07-07T23:59:59.000Z

273

Matrix elements for type 1 unitary irreducible representations of the Lie superalgebra gl(m|n)  

SciTech Connect (OSTI)

Using our recent results on eigenvalues of invariants associated to the Lie superalgebra gl(m|n), we use characteristic identities to derive explicit matrix element formulae for all gl(m|n) generators, particularly non-elementary generators, on finite dimensional type 1 unitary irreducible representations. We compare our results with existing works that deal with only subsets of the class of type 1 unitary representations, all of which only present explicit matrix elements for elementary generators. Our work therefore provides an important extension to existing methods, and thus highlights the strength of our techniques which exploit the characteristic identities.

Gould, Mark D.; Isaac, Phillip S.; Werry, Jason L. [School of Mathematics and Physics, The University of Queensland, St Lucia, QLD 4072 (Australia)] [School of Mathematics and Physics, The University of Queensland, St Lucia, QLD 4072 (Australia)

2014-01-15T23:59:59.000Z

274

Elemental analysis of Edwards Formation flint: a comparison of sample areas  

E-Print Network [OSTI]

, and K. In order to test the reliability of this technique, USGS standard rocks, AVG-1, GSP-1, and G-2 were also analyzed. Means and standard deviations of each element determined were calculated. The elemental values ranged from . 03 ppm... and their advice concerning my work. I wish to thank Dr. H. Shafer for collecting the rock samples used in this work. I would also like to thank the reactor personnel for their assistance. My sincere appreciation goes to Dr. John NcGinley, Dr. David Moore, Mrs...

McGinley, Ann Neil

1978-01-01T23:59:59.000Z

275

15th INT SYMP ON APPLICATIONS OF LASER TECHNIQUES TO FLUID MECHANICS Lisbon, Portugal, 05-08 July, 2010 # 1647  

E-Print Network [OSTI]

15th INT SYMP ON APPLICATIONS OF LASER TECHNIQUES TO FLUID MECHANICS Lisbon, Portugal, 05-08 July in "15th International Symposium on Applications of Laser Techniques in Fluid Mechanics, Lisbonne scientific studies of fluid flow. Dominant coherent structures are defined as organized fluid elements

Boyer, Edmond

276

Experimental techniques and measurement accuracies  

SciTech Connect (OSTI)

A brief description of the experimental tools available for fusion neutronics experiments is given. Attention is paid to error estimates mainly for the measurement of tritium breeding ratio in simulated blankets using various techniques.

Bennett, E.F.; Yule, T.J.; DiIorio, G.; Nakamura, T.; Maekawa, H.

1985-02-01T23:59:59.000Z

277

A Family of Uniform Strain Tetrahedral Elements and a Method for Connecting Dissimilar Finite Element Meshes  

SciTech Connect (OSTI)

This report documents a collection of papers on a family of uniform strain tetrahedral finite elements and their connection to different element types. Also included in the report are two papers which address the general problem of connecting dissimilar meshes in two and three dimensions. Much of the work presented here was motivated by the development of the tetrahedral element described in the report "A Suitable Low-Order, Eight-Node Tetrahedral Finite Element For Solids," by S. W. Key {ital et al.}, SAND98-0756, March 1998. Two basic issues addressed by the papers are: (1) the performance of alternative tetrahedral elements with uniform strain and enhanced uniform strain formulations, and (2) the proper connection of tetrahedral and other element types when two meshes are "tied" together to represent a single continuous domain.

Dohrmann, C.R.; Heinstein, M.W.; Jung, J.; Key, S.W.

1999-01-01T23:59:59.000Z

278

Stacked switchable element and diode combination with a low breakdown switchable element  

DOE Patents [OSTI]

A device (10) comprises a semiconductor diode (12) and a switchable element (14) positioned in stacked adjacent relationship. The semiconductor diode (12) and the switchable element (14) are electrically connected in series with one another. The switchable element (14) is switchable from a low-conductance state to a high-conductance state in response to the application of a low-density forming current and/or a low voltage.

Wang, Qi (Littleton, CO); Ward, James Scott (Englewood, CO); Hu, Jian (Englewood, CO); Branz, Howard M. (Boulder, CO)

2012-06-19T23:59:59.000Z

279

12.479 Trace-Element Geochemistry, Fall 2006  

E-Print Network [OSTI]

Focuses on element distribution in rocks and minerals using data obtained from natural and experimental systems. Emphasizes models describing trace-element partitioning and applications of trace-element geochemistry to ...

Frey, Frederick August

280

Nuclear elements in Banach Jordan pairs Ottmar Loos  

E-Print Network [OSTI]

Nuclear elements in Banach Jordan pairs Ottmar Loos Abstract We introduce nuclear elements in Banach Jordan pairs, generalizing the nuclear elements Jordan pairs and show that the trace form Trintroduced in [3] may be extended to the nuclear

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


281

Review of uranium bioassay techniques  

SciTech Connect (OSTI)

A variety of analytical techniques is available for evaluating uranium in excreta and tissues at levels appropriate for occupational exposure control and evaluation. A few (fluorometry, kinetic phosphorescence analysis, {alpha}-particle spectrometry, neutron irradiation techniques, and inductively-coupled plasma mass spectrometry) have also been demonstrated as capable of determining uranium in these materials at levels comparable to those which occur naturally. Sample preparation requirements and isotopic sensitivities vary widely among these techniques and should be considered carefully when choosing a method. This report discusses analytical techniques used for evaluating uranium in biological matrices (primarily urine) and limits of detection reported in the literature. No cost comparison is attempted, although references are cited which address cost. Techniques discussed include: {alpha}-particle spectrometry; liquid scintillation spectrometry, fluorometry, phosphorometry, neutron activation analysis, fission-track counting, UV-visible absorption spectrophotometry, resonance ionization mass spectrometry, and inductively-coupled plasma mass spectrometry. A summary table of reported limits of detection and of the more important experimental conditions associated with these reported limits is also provided.

Bogard, J.S.

1996-04-01T23:59:59.000Z

282

Status of Segmented Element Thermoelectric Generator for Vehicle...  

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

Segmented Element Thermoelectric Generator for Vehicle Waste Heat Recovery Status of Segmented Element Thermoelectric Generator for Vehicle Waste Heat Recovery Discusses progress...

283

Feasibility of the detection of trace elements in particulate...  

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

of trace elements in particulate matter using online High-Resolution Aerosol Mass Spectrometry. Feasibility of the detection of trace elements in particulate matter using online...

284

Review of Selected Elements of Emergency Management at the Oak...  

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

OVERSIGHT REVIEW OF SELECTED ELEMENTS OF EMERGENCY MANAGEMENT AT THE OAK RIDGE NATIONAL LABORATORY July 2011 i INDEPENDENT OVERSIGHT REVIEW OF SELECTED ELEMENTS OF EMERGENCY...

285

adaptive finite element: Topics by E-print Network  

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

properties and performance of the adaptive finite element approach to the design of nano-photonic components. Central issues are the construction of vectorial finite elements...

286

adaptive finite elements: Topics by E-print Network  

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

properties and performance of the adaptive finite element approach to the design of nano-photonic components. Central issues are the construction of vectorial finite elements...

287

3800 Green Series Cost Elements | Department of Energy  

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

(formerly EPP) Program 3800 Green Series Cost Elements 06112014 (Rev. 7) 3800 Green Series Cost Elements More Documents & Publications 1 OPAM Policy Acquisition Guides...

288

axial element protein: Topics by E-print Network  

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

Ser-142 (14). Ser-129 is believed to be a substrate for glycogen synthase kinase 3 Brownfield, Mark S. 84 Elements & Compounds Atoms (Elements) Biology and Medicine Websites...

289

Finite element meshing approached as a global minimization process  

SciTech Connect (OSTI)

The ability to generate a suitable finite element mesh in an automatic fashion is becoming the key to being able to automate the entire engineering analysis process. However, placing an all-hexahedron mesh in a general three-dimensional body continues to be an elusive goal. The approach investigated in this research is fundamentally different from any other that is known of by the authors. A physical analogy viewpoint is used to formulate the actual meshing problem which constructs a global mathematical description of the problem. The analogy used was that of minimizing the electrical potential of a system charged particles within a charged domain. The particles in the presented analogy represent duals to mesh elements (i.e., quads or hexes). Particle movement is governed by a mathematical functional which accounts for inter-particles repulsive, attractive and alignment forces. This functional is minimized to find the optimal location and orientation of each particle. After the particles are connected a mesh can be easily resolved. The mathematical description for this problem is as easy to formulate in three-dimensions as it is in two- or one-dimensions. The meshing algorithm was developed within CoMeT. It can solve the two-dimensional meshing problem for convex and concave geometries in a purely automated fashion. Investigation of the robustness of the technique has shown a success rate of approximately 99% for the two-dimensional geometries tested. Run times to mesh a 100 element complex geometry were typically in the 10 minute range. Efficiency of the technique is still an issue that needs to be addressed. Performance is an issue that is critical for most engineers generating meshes. It was not for this project. The primary focus of this work was to investigate and evaluate a meshing algorithm/philosophy with efficiency issues being secondary. The algorithm was also extended to mesh three-dimensional geometries. Unfortunately, only simple geometries were tested before this project ended. The primary complexity in the extension was in the connectivity problem formulation. Defining all of the interparticle interactions that occur in three-dimensions and expressing them in mathematical relationships is very difficult.

WITKOWSKI,WALTER R.; JUNG,JOSEPH; DOHRMANN,CLARK R.; LEUNG,VITUS J.

2000-03-01T23:59:59.000Z

290

Challenges for a reliable shell model description of the neutrinoless double beta decay matrix elements  

SciTech Connect (OSTI)

Assuming that the neutrinos are Majorana particles and the neutrinoless double beta (0{nu}{beta}{beta}) decay is observed, a reliable 0{nu}{beta}{beta} matrix element is necessary to decide the neutrino mass hierarchy and the minimum neutrino mass. Many nuclear structure techniques, including the shell model, are presently used to calculate these matrix elements. In the last few years one could see a slow convergence of these results, but not yet at a level of 20 several shell model effective interactions and varying other parameters, finding results in a range that spans about 20In this contribution we describe challenges for obtaining reliable shell model 0{nu}{beta}{beta} matrix elements, with emphasis to {sup 76}Ge and {sup 82}Se decays.

Horoi, Mihai [Department of Physics, Central Michigan University, Mount Pleasant, Michigan, 48859 (United States)

2011-12-16T23:59:59.000Z

291

Erasure Techniques in MRD codes  

E-Print Network [OSTI]

This book is organized into six chapters. The first chapter introduces the basic algebraic structures essential to make this book a self contained one. Algebraic linear codes and their basic properties are discussed in chapter two. In chapter three the authors study the basic properties of erasure decoding in maximum rank distance codes. Some decoding techniques about MRD codes are described and discussed in chapter four of this book. Rank distance codes with complementary duals and MRD codes with complementary duals are introduced and their applications are discussed. Chapter five introduces the notion of integer rank distance codes. The final chapter introduces some concatenation techniques.

W. B. Vasantha Kandasamy; Florentin Smarandache; R. Sujatha; R. S. Raja Durai

2012-05-03T23:59:59.000Z

292

Catalyst for elemental sulfur recovery process  

DOE Patents [OSTI]

A catalytic reduction process is described for the direct recovery of elemental sulfur from various SO[sub 2]-containing industrial gas streams. The catalytic process provides high activity and selectivity, as well as stability in the reaction atmosphere, for the reduction of SO[sub 2] to elemental sulfur product with carbon monoxide or other reducing gases. The reaction of sulfur dioxide and reducing gas takes place over a metal oxide composite catalyst having one of the following empirical formulas: [(FO[sub 2])[sub 1[minus]n](RO)[sub n

Flytzani-Stephanopoulos, M.; Liu, W.

1995-01-24T23:59:59.000Z

293

Spectroscopy of element 115 decay chains  

SciTech Connect (OSTI)

A high-resolution a, X-ray and -ray coincidence spectroscopy experiment was conducted at the GSI Helmholtzzentrum fu r Schwerionenforschung. Thirty correlated a-decay chains were detected following the fusion-evaporation reaction 48Ca + 243Am. The observations are consistent with previous assignments of similar decay chains to originate from element Z = 115. The data includes first candidates of fingerprinting the decay step Mt --> Bh with characteristic X rays. For the first time, precise spectroscopy allows the derivation of excitation schemes of isotopes along the decay chains starting with elements Z > 112. Comprehensive Monte-Carlo simulations accompany the data analysis. Nuclear structure models provide a first level interpretation.

Rudolph, Dirk [Lund University, Sweden; Forsberg, U. [Lund University, Sweden; Golubev, P. [Lund University, Sweden; Sarmiento, L. G. [Lund University, Sweden; Yakushev, A. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Andersson, L.-L. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Di Nitto, A. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Duehllmann, Ch. E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Gates, J. M. [Lawrence Berkeley National Laboratory (LBNL); Gregorich, K. E. [Lawrence Berkeley National Laboratory (LBNL); Gross, Carl J [ORNL; Hessberger, F. P. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Herzberg, R.-D [University of Liverpool; Khuyagbaatar, J. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Kratz, J. V. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Rykaczewski, Krzysztof Piotr [ORNL; Schaedel, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Aberg, S. [Lund University, Sweden; Ackermann, D. [GSI-Hemholtzzentrum fur Schwerionenforschung, Darmstadt, Germany; Block, M. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Brand, H. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Carlsson, B. G. [Lund University, Sweden; Cox, D. [University of Liverpool; Derkx, X. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Eberhardt, K. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Even, J. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Fahlander, C. [Lund University, Sweden; Gerl, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Jaeger, E. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kindler, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Krier, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kojouharov, I. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Kurz, N. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Lommel, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Mistry, A. [University of Liverpool; Mokry, C. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Nitsche, H. [Lawrence Berkeley National Laboratory (LBNL); Omtvedt, J. P. [Paul Scherrer Institut, Villigen, Switzerland; Papadakis, P. [University of Liverpool; Ragnarsson, I. [Lund University, Sweden; Runke, J. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Schaffner, H. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Schausten, B. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Thoerle-Pospiech, P. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Torres, T. [Gesellschaft fur Schwerionenforschung (GSI), Germany; Traut, T. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Trautmann, N. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Tuerler, A. [Paul Scherrer Institut, Villigen, Switzerland; Ward, A. [University of Liverpool; Ward, D. E. [Lund University, Sweden; Wiehl, N. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany

2013-01-01T23:59:59.000Z

294

Notes 04. Elements of analytical dynamics.  

E-Print Network [OSTI]

MEEN 617 - Handout 4 Elements of Analytical Mechanics ? 2008 Luis San Andr?s 1 MEEN 617 - Handout 4a ELEMENTS OF ANALYTICAL MECHANICS Newton's laws (Euler's fundamental principles of motion) are formulated for a single particle and easily... Mechanics ? 2008 Luis San Andr?s 2 WORK AND ENERGY FOR A SINGLE PARTICLE Consider a particle (point mass) moving along the curve C under the action of a force F. The position of the particle at any time is given by the position vector r #0;K...

San Andres, Luis

2008-01-01T23:59:59.000Z

295

Visualizing Higher Order Finite Elements: FY05 Yearly Report.  

SciTech Connect (OSTI)

This report contains an algorithm for decomposing higher-order finite elementsinto regions appropriate for isosurfacing and proves the conditions under which thealgorithm will terminate. Finite elements are used to create piecewise polynomialapproximants to the solution of partial differential equations for which no analyticalsolution exists. These polynomials represent fields such as pressure, stress, and mo-mentim. In the past, these polynomials have been linear in each parametric coordinate.Each polynomial coefficient must be uniquely determined by a simulation, and thesecoefficients are called degrees of freedom. When there are not enough degrees of free-dom, simulations will typically fail to produce a valid approximation to the solution.Recent work has shown that increasing the number of degrees of freedom by increas-ing the order of the polynomial approximation (instead of increasing the number offinite elements, each of which has its own set of coefficients) can allow some typesof simulations to produce a valid approximation with many fewer degrees of freedomthan increasing the number of finite elements alone. However, once the simulation hasdetermined the values of all the coefficients in a higher-order approximant, tools donot exist for visual inspection of the solution.This report focuses on a technique for the visual inspection of higher-order finiteelement simulation results based on decomposing each finite element into simplicialregions where existing visualization algorithms such as isosurfacing will work. Therequirements of the isosurfacing algorithm are enumerated and related to the placeswhere the partial derivatives of the polynomial become zero. The original isosurfacingalgorithm is then applied to each of these regions in turn.3 AcknowledgementThe authors would like to thank David Day and Louis Romero for their insight into poly-nomial system solvers and the LDRD Senior Council for the opportunity to pursue thisresearch. The authors were supported by the United States Department of Energy, Officeof Defense Programs by the Labratory Directed Research and Development Senior Coun-cil, project 90499. Sandia is a multiprogram laboratory operated by Sandia Corporation,a Lockheed-Martin Company, for the United States Department of Energy under contractDE-AC04-94-AL85000.4

Thompson, David; Pebay, Philippe Pierre

2005-11-01T23:59:59.000Z

296

Adaptive Anisotropic Mesh Technique For Coupled Problems: Application To Welding Simulation  

E-Print Network [OSTI]

Adaptive Anisotropic Mesh Technique For Coupled Problems: Application To Welding Simulation M, such as welding for instance, is the control of the mesh, that is an appropriate mastering of the spatial welding. We demonstrate that the use of an anisotropic adaptive finite element method can result

Paris-Sud XI, Université de

297

New two element steam turbine for 150 to 27 MW applications  

SciTech Connect (OSTI)

A modern high efficiency two element steam turbine for application in the 150 MW to 270 MW range is discussed. Innovations utilized and the experience base from which they are derived are presented. Benefits to the power producer resulting from this innovative approach are highlighted.They include reliability and efficiency improvement, delivery time reduction, and the application of design features, microprocessor control systems, and A. I. diagnostic techniques to reduce maintenance requirements, increase life, and enhance overall power plant productivity.

Martin, H.F.; Vaccarro, F.R.; Conrad, J.D. (Westinghouse Electric Corp., Orlando, FL (USA))

1989-01-01T23:59:59.000Z

298

Control of Gas Tungsten Arc welding pool shape by trace element addition to the weld pool  

DOE Patents [OSTI]

An improved process for Gas Tungsten Arc welding maximizes the depth/width ratio of the weld pool by adding a sufficient amount of a surface active element to insure inward fluid flow, resulting in deep, narrow welds. The process is especially useful to eliminate variable weld penetration and shape in GTA welding of steels and stainless steels, particularly by using a sulfur-doped weld wire in a cold wire feed technique.

Heiple, C.R.; Burgardt, P.

1984-03-13T23:59:59.000Z

299

Iron and s-elements abundance variations in NGC5286: comparison with anomalous globular clusters and Milky Way satellites  

E-Print Network [OSTI]

We present a high resolution spectroscopic analysis of 62 red giants in the Milky Way globular cluster NGC5286. We have determined abundances of representative light proton-capture, alpha, Fe-peak and neutron-capture element groups, and combined them with photometry of multiple sequences observed along the colour-magnitude diagram. Our principal results are: (i) a broad, bimodal distribution in s-process element abundance ratios, with two main groups, the s-poor and s-rich groups; (ii) substantial star-to-star Fe variations, with the s-rich stars having higher Fe, e.g. _s-rich - _s-poor ~ 0.2~dex; and (iii) the presence of O-Na-Al (anti-)correlations in both stellar groups. We have defined a new photometric index, c_{BVI}=(B-V)-(V-I), to maximise the separation in the colour-magnitude diagram between the two stellar groups with different Fe and s-element content, and this index is not significantly affected by variations in light elements (such as the O-Na anticorrelation). The variations in the overall metal...

Marino, A F; Karakas, A I; Casagrande, L; Yong, D; Shingles, L; Da Costa, G; Norris, J E; Stetson, P B; Lind, K; Asplund, M; Collet, R; Jerjen, H; Sbordone, L; Aparicio, A; Cassisi, S

2015-01-01T23:59:59.000Z

300

Data Mining: Concepts and Techniques  

E-Print Network [OSTI]

1 Data Mining: Concepts and Techniques (3rd ed.) -- Chapter 3 -- Jiawei Han, Micheline Kamber. All rights reserved. #12;2013/08/12 2 #12;33 Chapter 3: Data Preprocessing n Data Preprocessing: An Overview n Data Quality n Major Tasks in Data Preprocessing n Data Cleaning n Data Integration n Data

Geldenhuys, Jaco

Note: This page contains sample records for the topic "techniques principal elements" 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

Dissertation Imaging as Characterization Techniques  

E-Print Network [OSTI]

Telluride Photovoltaics The goal of increasing the efficiency of solar cell devices is a universal oneDissertation Imaging as Characterization Techniques for Thin-Film Cadmium Telluride Photovoltaics. Increased photovoltaic (PV) performance means an increase in competition with other energy tech- nologies

Sites, James R.

302

The photoelastic determination of the principal stresses in polygons having round central holes and subjected to a concentrated diagonal compressive load  

E-Print Network [OSTI]

THE PHOTOELASTIC DETERMINATION OF THE PRINCIPAL STRESSES IN POLYGONS HAVING ROUND CENTRAL HOLES AND SUMECTED TO A CONCENTRATED DIAGONAL COMPRESSIVE LOAD A Thesis TOMMY GLYNN PRIDDX Submitted to the Graduate Sohool of the Agrioultural...

Priddy, Tommy Glynn

1961-01-01T23:59:59.000Z

303

Neutron based elemental characterization of coal  

SciTech Connect (OSTI)

An elemental characterization system based on a 14 MeV neutron generator is described. The results of sulfur content measurement in coal with a precision acceptable to the coal industry are presented. The preliminary results of measuring carbon, oxygen, and sodium are shown.

Dep, L.; Vourvopoulos, G. [Western Kentucky Univ., Bowling Green, KY (United States)

1996-12-31T23:59:59.000Z

304

Generalized finite element method for Helmholtz equation  

E-Print Network [OSTI]

reduces the pollution effect due to wave number and we are able to obtain a highly accurate solution with a much smaller number of degrees-of-freedom compared with the classical Finite Element Method. The q-convergence of the handbook functions...

Hidajat, Realino Lulie

2009-05-15T23:59:59.000Z

305

Chaotic Boltzmann machines with two elements  

E-Print Network [OSTI]

In this brief note, we show that chaotic Boltzmann machines truly yield samples from the probabilistic distribution of the corresponding Boltzmann machines if they are composed of only two elements. This note is an English translation (with slight modifications) of the article originally written in Japanese [H. Suzuki, Seisan Kenkyu 66 (2014), 315-316].

Hideyuki Suzuki

2015-01-28T23:59:59.000Z

306

DISSOLVED CONCENTRATION LIMITS OF RADIOACTIVE ELEMENTS  

SciTech Connect (OSTI)

The purpose of this study is to evaluate dissolved concentration limits (also referred to as solubility limits) of elements with radioactive isotopes under probable repository conditions, based on geochemical modeling calculations using geochemical modeling tools, thermodynamic databases, field measurements, and laboratory experiments. The scope of this modeling activity is to predict dissolved concentrations or solubility limits for 14 elements with radioactive isotopes (actinium, americium, carbon, cesium, iodine, lead, neptunium, plutonium, protactinium, radium, strontium, technetium, thorium, and uranium) important to calculated dose. Model outputs for uranium, plutonium, neptunium, thorium, americium, and protactinium are in the form of tabulated functions with pH and log (line integral) CO{sub 2} as independent variables, plus one or more uncertainty terms. The solubility limits for the remaining elements are either in the form of distributions or single values. The output data from this report are fundamental inputs for Total System Performance Assessment for the License Application (TSPA-LA) to determine the estimated release of these elements from waste packages and the engineered barrier system. Consistent modeling approaches and environmental conditions were used to develop solubility models for all of the actinides. These models cover broad ranges of environmental conditions so that they are applicable to both waste packages and the invert. Uncertainties from thermodynamic data, water chemistry, temperature variation, and activity coefficients have been quantified or otherwise addressed.

NA

2004-11-22T23:59:59.000Z

307

Near-field diffractive elements Daniel Marks  

E-Print Network [OSTI]

by a near-field diffractive element (NDE) that scatters the high-spatial-frequency components of the field susceptibility r , and the NDE is described by the susceptibilty r . The field obeys the equation 2 U r +k0 2 U r to first order in both the NDE and the sample susceptibilities. It is assumed that the background terms

Bhargava, Rohit

308

The New Element Californium (Atomic Number 98)  

DOE R&D Accomplishments [OSTI]

Definite identification has been made of an isotope of the element with atomic number 98 through the irradiation of Cm{sup 242} with about 35-Mev helium ions in the Berkeley Crocker Laboratory 60-inch cyclotron. The isotope which has been identified has an observed half-life of about 45 minutes and is thought to have the mass number 244. The observed mode of decay of 98{sup 244} is through the emission of alpha-particles, with energy of about 7.1 Mev, which agrees with predictions. Other considerations involving the systematics of radioactivity in this region indicate that it should also be unstable toward decay by electron capture. The chemical separation and identification of the new element was accomplished through the use of ion exchange adsorption methods employing the resin Dowex-50. The element 98 isotope appears in the eka-dysprosium position on elution curves containing berkelium and curium as reference points--that is, it precedes berkelium and curium off the column in like manner that dysprosium precedes terbium and gadolinium. The experiments so far have revealed only the tripositive oxidation state of eka-dysprosium character and suggest either that higher oxidation states are not stable in aqueous solutions or that the rates of oxidation are slow. The successful identification of so small an amount of an isotope of element 98 was possible only through having made accurate predictions of the chemical and radioactive properties.

Seaborg, G. T.; Thompson, S. G.; Street, K. Jr.; Ghiroso, A.

1950-06-19T23:59:59.000Z

309

Prospects for Rare Earth Elements From Marine Minerals  

E-Print Network [OSTI]

Prospects for Rare Earth Elements From Marine Minerals Rare earth elements (REEs) compose in the earth's crust. However, because of their geochemical proper es, rare earth elements are typically. Briefing Paper 02/12 Jim Hein | May 2012 www.isa.org.jm Table 1: Rare Earth Elements This paper

310

MATERIAL FLOW ANALYSIS FOR IDENTIFYING RARE EARTH ELEMENT  

E-Print Network [OSTI]

MATERIAL FLOW ANALYSIS FOR IDENTIFYING RARE EARTH ELEMENT RECYCLING POTENTIALS IN THE EU-27 D Rochelle (F) SUMMARY: Rare earth elements (REEs) are essential for high-techology industrial sectors earths. Rare earth elements (REEs) are a group of 17 elements comprising the 15 lanthanides, scandium

Paris-Sud XI, Université de

311

3760 IEEE TRANSACTIONS ON NUCLEAR SCIENCE, VOL. 57, NO. 6, DECEMBER 2010 Noise-Adjusted Principal Component Analysis  

E-Print Network [OSTI]

material measurements (uranium ore), and target measurements (depleted uranium) at various depths. Compared to other widely used algorithms for depleted uranium, the proposed technique can provide better performance techniques may be poor when a target, e.g., depleted uranium, is buried. The problem be- comes more

Du, Jenny (Qian)

312

Innovative Exploration Techniques for Geothermal Assessment at...  

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

Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Innovative Exploration Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Innovative Exploration...

313

Chemistry of the heaviest elements--one atom at a time  

SciTech Connect (OSTI)

In keeping with the goal of the Viewpoint series of the Journal of Chemical Education, this article gives a 75-year perspective of the chemistry of the heaviest elements, including a 50-year retrospective view of past developments, a summary of current research achievements and applications, and some predictions about exciting, new developments that might be envisioned within the next 25 years. A historical perspective of the importance of chemical separations in the discoveries of the transuranium elements from neptunium (Z=93) through mendelevium (Z=101) is given. The development of techniques for studying the chemical properties of mendelevium and still heavier elements on the basis of measuring the radioactive decay of a single atom (''atom-at-a-time'' chemistry) and combining the results of many separate experiments is reviewed. The influence of relativistic effects (expected to increase as Z{sup 2}) on chemical properties is discussed. The results from recent atom-at-a-time studies of the chemistry of the heaviest elements through seaborgium (Z=106) are summarized and show that their properties cannot be readily predicted based on simple extrapolation from the properties of their lighter homologues in the periodic table. The prospects for extending chemical studies to still heavier elements than seaborgium are considered and appear promising.

Hoffman, Darleane C.; Lee, Diana M.

2000-01-01T23:59:59.000Z

314

A reciprocal space approach for locating symmetry elements in Patterson superposition maps  

SciTech Connect (OSTI)

A method for determining the location and possible existence of symmetry elements in Patterson superposition maps has been developed. A comparison of the original superposition map and a superposition map operated on by the symmetry element gives possible translations to the location of the symmetry element. A reciprocal space approach using structure factor-like quantities obtained from the Fourier transform of the superposition function is then used to determine the best'' location of the symmetry element. Constraints based upon the space group requirements are also used as a check on the locations. The locations of the symmetry elements are used to modify the Fourier transform coefficients of the superposition function to give an approximation of the structure factors, which are then refined using the EG relation. The analysis of several compounds using this method is presented. Reciprocal space techniques for locating multiple images in the superposition function are also presented, along with methods to remove the effect of multiple images in the Fourier transform coefficients of the superposition map. In addition, crystallographic studies of the extended chain structure of (NHC{sub 5}H{sub 5})SbI{sub 4} and of the twinning method of the orthorhombic form of the high-{Tc} superconductor YBa{sub 2}Cu{sub 3}O{sub 7-x} are presented. 54 refs.

Hendrixson, T.

1990-09-21T23:59:59.000Z

315

Ferroelectric tunneling element and memory applications which utilize the tunneling element  

DOE Patents [OSTI]

A tunneling element includes a thin film layer of ferroelectric material and a pair of dissimilar electrically-conductive layers disposed on opposite sides of the ferroelectric layer. Because of the dissimilarity in composition or construction between the electrically-conductive layers, the electron transport behavior of the electrically-conductive layers is polarization dependent when the tunneling element is below the Curie temperature of the layer of ferroelectric material. The element can be used as a basis of compact 1R type non-volatile random access memory (RAM). The advantages include extremely simple architecture, ultimate scalability and fast access times generic for all ferroelectric memories.

Kalinin, Sergei V. (Knoxville, TN) [Knoxville, TN; Christen, Hans M. (Knoxville, TN) [Knoxville, TN; Baddorf, Arthur P. (Knoxville, TN) [Knoxville, TN; Meunier, Vincent (Knoxville, TN) [Knoxville, TN; Lee, Ho Nyung (Oak Ridge, TN) [Oak Ridge, TN

2010-07-20T23:59:59.000Z

316

Process to separate transuranic elements from nuclear waste  

DOE Patents [OSTI]

A process for removing transuranic elements from a waste chloride electrolytic salt containing transuranic elements in addition to rare earth and other fission product elements so the salt waste may be disposed of more easily and the valuable transuranic elements may be recovered for reuse. The salt is contacted with a cadmium-uranium alloy which selectively extracts the transuranic elements from the salt. The waste salt is generated during the reprocessing of nuclear fuel associated with the Integral Fast Reactor (IFR).

Johnson, Terry R. (Wheaton, IL); Ackerman, John P. (Downers Grove, IL); Tomczuk, Zygmunt (Orland Park, IL); Fischer, Donald F. (Glen Ellyn, IL)

1989-01-01T23:59:59.000Z

317

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 Trace elements and alkaliTrace elements and alkali  

E-Print Network [OSTI]

elements in fossil - and waste-derived fuelsTrace elements in fossil - and waste-derived fuels Coal Peat Heavy fuel oil Pet coke MSW RDF Wood Waste wood Waste paper Scrap tyres Sew. sludge Hg 0.02-3 ~0.07 .153 Behaviour of trace elements in coalBehaviour of trace elements in coal combustion flue gasescombustion flue

Zevenhoven, Ron

318

INTERIM REPORT ON CONCRETE DEGRADATION MECHANISMS AND ONLINE MONITORING TECHNIQUES  

SciTech Connect (OSTI)

The existing fleets of nuclear power plants in the United States have initial operating licenses of 40 years, though most these plants have applied for and received license extensions. As plant structures, systems, and components age, their useful life—considering both structural integrity and performance—is reduced as a result of deterioration of the materials. The online monitoring of concrete structure conducted under the Advanced Instrumentation, Information, and Control Technologies Pathway of the Light Water Reactor Sustainability program at Idaho National Laboratory will develop and demonstrate concrete structures health monitoring capabilities. Assessment and management of aging concrete structures in nuclear plants require a more systematic approach than simple reliance on existing code margins of safety. Therefore, the structural health monitoring is required to produce actionable information regarding structural integrity that supports operational and maintenance decisions. Through this research project, several national laboratories and Vanderbilt University proposes to develop a framework of research activities for the health monitoring of nuclear power plant concrete structures that includes integration of four elements—damage modeling, monitoring, data analytics, and uncertainty quantification. This report briefly discusses available techniques and ongoing challenges in each of the four elements of the proposed framework with emphasis on degradation mechanisms and online monitoring techniques.

Mahadevan, Sankaran; Agarwal, Vivek; Neal, Kyle; Kosson, David; Adams, Douglas

2014-09-01T23:59:59.000Z

319

Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Power Basics (The followingDirectLow CarbonOpen1Model | Exploration Technique:

320

First-Principles Calculation of Principal Hugoniot and K-Shell X-ray Absorption Spectra for Warm Dense KCl  

E-Print Network [OSTI]

Principal Hugoniot and K-shell X-ray absorption spectra of warm dense KCl are calculated using the first-principles molecular dynamics method. Evolution of electronic structures as well as the influence of the approximate description of ionization on pressure (caused by the underestimation of the energy gap between conduction bands and valence bands) in the first-principles method are illustrated by the calculation. Pressure ionization and thermal smearing are shown as the major factors to prevent the deviation of pressure from global accumulation along the Hugoniot. In addition, cancellation between electronic kinetic pressure and virial pressure further reduces the deviation. The calculation of X-ray absorption spectra shows that the band gap of KCl persists after the pressure ionization of the $3p$ electrons of Cl and K taking place at lower energy, which provides a detailed understanding to the evolution of electronic structures of warm dense matter.

Zhao, Shijun; Kang, Wei; Li, Zi; Zhang, Ping; He, Xian-Tu

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

Comparison of Holdup Measurement Techniques  

SciTech Connect (OSTI)

The measurement of uranium holdup, the residual material left in process equipment such as pipes or ducts, is an integral element of material control and accountability. Not only are the measurements important for accountability, they are also important for criticality safety. The goal in measuring holdup is to quantify the amount of material in the pipes to verify that all material is accounted for (inventory in [inventory out + holdup] = 0) and to ensure that the amount of material heldup is not a criticality risk. There are a number of ways to measure holdup in process equipment; however, this paper will evaluate only two methods (i.e., Holdup Measurement System 4 (HMS-4) and In Situ Object Counting Software (ISOCS)) for specific measurement scenarios. The comparison will use measurements of well-known reference materials in various configurations and will examine the results, uncertainties, repeatability, time required, portability, and cost of each system.

Lousteau, Angela L [ORNL] [ORNL; Stooksbury, John C [ORNL] [ORNL; Cleveland, Steven L [ORNL] [ORNL

2012-01-01T23:59:59.000Z

322

Finite element analysis of human joints  

SciTech Connect (OSTI)

Our work focuses on the development of finite element models (FEMs) that describe the biomechanics of human joints. Finite element modeling is becoming a standard tool in industrial applications. In highly complex problems such as those found in biomechanics research, however, the full potential of FEMs is just beginning to be explored, due to the absence of precise, high resolution medical data and the difficulties encountered in converting these enormous datasets into a form that is usable in FEMs. With increasing computing speed and memory available, it is now feasible to address these challenges. We address the first by acquiring data with a high resolution C-ray CT scanner and the latter by developing semi-automated method for generating the volumetric meshes used in the FEM. Issues related to tomographic reconstruction, volume segmentation, the use of extracted surfaces to generate volumetric hexahedral meshes, and applications of the FEM are described.

Bossart, P.L.; Hollerbach, K.

1996-09-01T23:59:59.000Z

323

Cantilevered probe detector with piezoelectric element  

DOE Patents [OSTI]

A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.

Adams, Jesse D. (Reno, NV); Sulchek, Todd A. (Oakland, CA); Feigin, Stuart C. (Reno, NV)

2012-07-10T23:59:59.000Z

324

Continuous, real time microwave plasma element sensor  

DOE Patents [OSTI]

Microwave-induced plasma is described for continuous, real time trace element monitoring under harsh and variable conditions. The sensor includes a source of high power microwave energy and a shorted waveguide made of a microwave conductive, refractory material communicating with the source of the microwave energy to generate a plasma. The high power waveguide is constructed to be robust in a hot, hostile environment. It includes an aperture for the passage of gases to be analyzed and a spectrometer is connected to receive light from the plasma. Provision is made for real time in situ calibration. The spectrometer disperses the light, which is then analyzed by a computer. The sensor is capable of making continuous, real time quantitative measurements of desired elements, such as the heavy metals lead and mercury. 3 figs.

Woskov, P.P.; Smatlak, D.L.; Cohn, D.R.; Wittle, J.K.; Titus, C.H.; Surma, J.E.

1995-12-26T23:59:59.000Z

325

Cantilevered probe detector with piezoelectric element  

DOE Patents [OSTI]

A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.

Adams, Jesse D; Sulchek, Todd A; Feigin, Stuart C

2014-04-29T23:59:59.000Z

326

Cantilevered probe detector with piezoelectric element  

DOE Patents [OSTI]

A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator. Detection can include, for example, detecting a movement of the cantilevered probe or a property of the cantilevered probe. The movement or a change in the property of the cantilevered probe can occur, for example, by adsorption of the target material, desorption of the target material, reaction of the target material and/or phase change of the target material. Examples of detectable movements and properties include temperature shifts, impedance shifts, and resonant frequency shifts of the cantilevered probe. The overall chemical detection system can be incorporated, for example, into a handheld explosive material detection system.

Adams, Jesse D; Sulchek, Todd A; Feigin, Stuart C

2013-04-30T23:59:59.000Z

327

Prediction of rainwater acidity using trace element concentrations  

SciTech Connect (OSTI)

It is of interest to be able to estimate the contribution of an anthropogenic emission source to downwind rainwater chemistry. The authors here consider the closure of a large copper smelter which operated in a region where background and other emission sources should contribute smaller amounts of atmospheric sulfur than the smelter. An additional simplification existed in that meteorology associated with rain was relatively well known and consistent. A field experiment was conducted in the winters of 1985 and 1986 to collect rainwater at sites upwind and downwind of the Tacoma, Washington smelter. The smelters SO{sub 2} emissions, their conversion to SO{sub 4}= via three oxidants (O{sub 3}, H{sub 2}O{sub 2}, and O{sub 2} - Fe catalyzed reactions), diffusion, transport, and aerosol/gas scavenging previously have been estimated while adjusting model parameters until the predictions fit the rainwater data. To take advantage of the unique experimental design afforded by the closure of the smelter, statistical analysis was performed on NO{sub 3}-, SO{sub 4}(xs)= (excess of seasalt), and pH data; analysis of variance (ANOVA) confirmed that the smelter had a significant (p < .01) influence on rainwater pH and SO{sub 4}(xs). The analysis presented here extends the ANOVA by applying a multivariate regression technique to new data for trace element concentrations for the same rain samples. To predict rainwater acidity, they derive fingerprints from trace element data, identify a source or process related to that fingerprint, and compare the predicted contributions for pre- and post- closure samples.

Vong, R.J.; Peterson, R.E. (Univ. of Washington, Seattle (USA))

1988-09-01T23:59:59.000Z

328

The technique and preliminary results of LEU U-Mo full-size IRT type fuel testing in the MIR reactor  

SciTech Connect (OSTI)

In March 2007 in-pile testing of LEU U-Mo full-size IRT type fuel elements was started in the MIR reactor. Four prototype fuel elements for Uzbekistan WWR SM reactor are being tested simultaneously - two of tube type design and two of pin type design. The dismountable irradiation devices were constructed for intermediate reloading and inspection of fuel elements during reactor testing. The objective of the test is to obtain the experimental results for determination of more reliable design and licensing fuel elements for conversion of the WWR SM reactor. The heat power of fuel elements is measured on-line by thermal balance method. The distribution of fission density and burn-up of uranium in the volume of elements are calculated by using the MIR reactor MCU code (Monte-Carlo) model. In this paper the design of fuel elements, the technique, main parameters and preliminary results are described. (author)

Izhutov, A.L.; Starkov, V.A.; Pimenov, V.V.; Fedoseev, V.Ye. [Research Reactor Complex, RIAR, 433510, Dimitrovgrad-10, Ulyanovsk Region (Russian Federation); Dobrikova, I.V.; Vatulin, A.V.; Suprun, V.B. [A.A. Bochvar All-Russian Scientific Research Institute of Inorganic Materials, P. O. Box 369, 123060, Moscow (Russian Federation); Kartashov, Ye.F.; Lukichev, V.A. [Research and Development Institute of Nuclear Energy and Industry, P. O. Box 788, 107014, Moscow (Russian Federation); Troyanov, V.M.; Enin, A.A.; Tkachev, A.A. [OAO 'TVEL' 119017, ul. B. Ordinka 24/26, Moscow (Russian Federation)

2008-07-15T23:59:59.000Z

329

Finite element decomposition of the human neocortex  

E-Print Network [OSTI]

dividing boundary types of neuroanatomical consistency . . . . . . . . 5 1 18 Mapping a template onto the object domain. . . . ?53 FIGURE Page 19 Hierarchical division of the human brain into its anatomical parts, . . . 54 20 Decomposition of a... major gyrus into macro elements . ?. , 56 21 Different gyral shapes and their lines of symmetry. . . . 57 22 Mapping gyral line of symmetry at different levels of detail. . . . . . . . 58 23 Sectional view in a human brain atlas. , . . . 60 24...

Chow, Seeling

1998-01-01T23:59:59.000Z

330

DISSOLVED CONCENTRATION LIMITS OF RADIOACTIVE ELEMENTS  

SciTech Connect (OSTI)

The purpose of this study is to evaluate dissolved concentration limits (also referred to as solubility limits) of elements with radioactive isotopes under probable repository conditions, based on geochemical modeling calculations using geochemical modeling tools, thermodynamic databases, field measurements, and laboratory experiments. The scope of this activity is to predict dissolved concentrations or solubility limits for elements with radioactive isotopes (actinium, americium, carbon, cesium, iodine, lead, neptunium, plutonium, protactinium, radium, strontium, technetium, thorium, and uranium) relevant to calculated dose. Model outputs for uranium, plutonium, neptunium, thorium, americium, and protactinium are provided in the form of tabulated functions with pH and log fCO{sub 2} as independent variables, plus one or more uncertainty terms. The solubility limits for the remaining elements are either in the form of distributions or single values. Even though selection of an appropriate set of radionuclides documented in Radionuclide Screening (BSC 2002 [DIRS 160059]) includes actinium, transport of Ac is not modeled in the total system performance assessment for the license application (TSPA-LA) model because of its extremely short half-life. Actinium dose is calculated in the TSPA-LA by assuming secular equilibrium with {sup 231}Pa (Section 6.10); therefore, Ac is not analyzed in this report. The output data from this report are fundamental inputs for TSPA-LA used to determine the estimated release of these elements from waste packages and the engineered barrier system. Consistent modeling approaches and environmental conditions were used to develop solubility models for the actinides discussed in this report. These models cover broad ranges of environmental conditions so they are applicable to both waste packages and the invert. Uncertainties from thermodynamic data, water chemistry, temperature variation, and activity coefficients have been quantified or otherwise addressed.

P. Bernot

2005-07-13T23:59:59.000Z

331

Muckraking elements in Frank Norris's "The Octopus.  

E-Print Network [OSTI]

illegal schemes and imposes the same outrageous rates and. regu. lations as the real "octopus. " Likewise, 'Iorris creates f'ct. 'anal characters to correspond. to the real ranchers who had opposed the railroad. IIagnus and IIarran i)errick, Annixter... "mouthpieces" for the business interests which owned them, but they were necessary elements ior the great hoax to be successful. The apathetic public was unli! ely to be aware that collusion existed between industry end government and that illegal...

Leitz, Robert Charles

1969-01-01T23:59:59.000Z

332

Trace element partitioning in Texas lignite  

E-Print Network [OSTI]

lignites and largest individual deposits in Texas occur in the Wilcox group north of the Colorado River; the lowest quality lignite occurs in the Jackson group (2). A comparison between the elemental composition of lignite from the wilcox formation..., Rb, Sc, Th, U, V, Y, Yb, Zn and Zr are positively correlated and B decreases 10 in concentration with increasing levels of ash (15) Combustion. Texas can supply a large portion of its energy needs with its near surface lignite sources (21...

Acevedo, Lillian Esther

1989-01-01T23:59:59.000Z

333

Nuclear fuel elements made from nanophase materials  

DOE Patents [OSTI]

A nuclear reactor core fuel element is composed of nanophase high temperature materials. An array of the fuel elements in rod form are joined in an open geometry fuel cell that preferably also uses such nanophase materials for the cell structures. The particular high temperature nanophase fuel element material must have the appropriate mechanical characteristics to avoid strain related failure even at high temperatures, in the order of about 3000.degree. F. Preferably, the reactor type is a pressurized or boiling water reactor and the nanophase material is a high temperature ceramic or ceramic composite. Nanophase metals, or nanophase metals with nanophase ceramics in a composite mixture, also have desirable characteristics, although their temperature capability is not as great as with all-ceramic nanophase material. Combinations of conventional or nanophase metals and conventional or nanophase ceramics can be employed as long as there is at least one nanophase material in the composite. The nuclear reactor so constructed has a number of high strength fuel particles, a nanophase structural material for supporting a fuel rod at high temperature, a configuration to allow passive cooling in the event of a primary cooling system failure, an ability to retain a coolable geometry even at high temperatures, an ability to resist generation of hydrogen gas, and a configuration having good nuclear, corrosion, and mechanical characteristics.

Heubeck, Norman B. (Schenectady, NY)

1998-01-01T23:59:59.000Z

334

Nuclear fuel elements made from nanophase materials  

DOE Patents [OSTI]

A nuclear reactor core fuel element is composed of nanophase high temperature materials. An array of the fuel elements in rod form are joined in an open geometry fuel cell that preferably also uses such nanophase materials for the cell structures. The particular high temperature nanophase fuel element material must have the appropriate mechanical characteristics to avoid strain related failure even at high temperatures, in the order of about 3000 F. Preferably, the reactor type is a pressurized or boiling water reactor and the nanophase material is a high temperature ceramic or ceramic composite. Nanophase metals, or nanophase metals with nanophase ceramics in a composite mixture, also have desirable characteristics, although their temperature capability is not as great as with all-ceramic nanophase material. Combinations of conventional or nanophase metals and conventional or nanophase ceramics can be employed as long as there is at least one nanophase material in the composite. The nuclear reactor so constructed has a number of high strength fuel particles, a nanophase structural material for supporting a fuel rod at high temperature, a configuration to allow passive cooling in the event of a primary cooling system failure, an ability to retain a coolable geometry even at high temperatures, an ability to resist generation of hydrogen gas, and a configuration having good nuclear, corrosion, and mechanical characteristics. 5 figs.

Heubeck, N.B.

1998-09-08T23:59:59.000Z

335

Photovoltaic Process Development and innovative Techniques.  

E-Print Network [OSTI]

?? Photovoltaic processing is one of the processes that have significance in semiconductor process line. It is complicated due to the no. of elements involved… (more)

Ismail, Furrukh

2011-01-01T23:59:59.000Z

336

Method and system for processing optical elements using magnetorheological finishing  

DOE Patents [OSTI]

A method of finishing an optical element includes mounting the optical element in an optical mount having a plurality of fiducials overlapping with the optical element and obtaining a first metrology map for the optical element and the plurality of fiducials. The method also includes obtaining a second metrology map for the optical element without the plurality of fiducials, forming a difference map between the first metrology map and the second metrology map, and aligning the first metrology map and the second metrology map. The method further includes placing mathematical fiducials onto the second metrology map using the difference map to form a third metrology map and associating the third metrology map to the optical element. Moreover, the method includes mounting the optical element in the fixture in an MRF tool, positioning the optical element in the fixture; removing the plurality of fiducials, and finishing the optical element.

Menapace, Joseph Arthur; Schaffers, Kathleen Irene; Bayramian, Andrew James; Molander, William A

2012-09-18T23:59:59.000Z

337

Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1DeringDolgeville,Massachusetts: EnergyKokamDownhole Techniques

338

Note: Portable rare-earth element analyzer using pyroelectric crystal  

SciTech Connect (OSTI)

We report a portable rare-earth element analyzer with a palm-top size chamber including the electron source of a pyroelectric crystal and the sample stage utilizing cathodoluminescence (CL) phenomenon. The portable rare-earth element analyzer utilizing CL phenomenon is the smallest reported so far. The portable rare-earth element analyzer detected the rare-earth elements Dy, Tb, Er, and Sm of ppm order in zircon, which were not detected by scanning electron microscopy-energy dispersive X-ray spectroscopy analysis. We also performed an elemental mapping of rare-earth elements by capturing a CL image using CCD camera.

Imashuku, Susumu, E-mail: imashuku.susumu.2m@kyoto-u.ac.jp; Fuyuno, Naoto; Hanasaki, Kohei; Kawai, Jun [Department of Materials Science and Engineering, Kyoto University, Sakyo, Kyoto 606-8501 (Japan)] [Department of Materials Science and Engineering, Kyoto University, Sakyo, Kyoto 606-8501 (Japan)

2013-12-15T23:59:59.000Z

339

Model building techniques for analysis.  

SciTech Connect (OSTI)

The practice of mechanical engineering for product development has evolved into a complex activity that requires a team of specialists for success. Sandia National Laboratories (SNL) has product engineers, mechanical designers, design engineers, manufacturing engineers, mechanical analysts and experimentalists, qualification engineers, and others that contribute through product realization teams to develop new mechanical hardware. The goal of SNL's Design Group is to change product development by enabling design teams to collaborate within a virtual model-based environment whereby analysis is used to guide design decisions. Computer-aided design (CAD) models using PTC's Pro/ENGINEER software tools are heavily relied upon in the product definition stage of parts and assemblies at SNL. The three-dimensional CAD solid model acts as the design solid model that is filled with all of the detailed design definition needed to manufacture the parts. Analysis is an important part of the product development process. The CAD design solid model (DSM) is the foundation for the creation of the analysis solid model (ASM). Creating an ASM from the DSM currently is a time-consuming effort; the turnaround time for results of a design needs to be decreased to have an impact on the overall product development. This effort can be decreased immensely through simple Pro/ENGINEER modeling techniques that summarize to the method features are created in a part model. This document contains recommended modeling techniques that increase the efficiency of the creation of the ASM from the DSM.

Walther, Howard P.; McDaniel, Karen Lynn; Keener, Donald; Cordova, Theresa Elena; Henry, Ronald C.; Brooks, Sean; Martin, Wilbur D.

2009-09-01T23:59:59.000Z

340

Compensation Techniques in Accelerator Physics  

SciTech Connect (OSTI)

Accelerator physics is one of the most diverse multidisciplinary fields of physics, wherein the dynamics of particle beams is studied. It takes more than the understanding of basic electromagnetic interactions to be able to predict the beam dynamics, and to be able to develop new techniques to produce, maintain, and deliver high quality beams for different applications. In this work, some basic theory regarding particle beam dynamics in accelerators will be presented. This basic theory, along with applying state of the art techniques in beam dynamics will be used in this dissertation to study and solve accelerator physics problems. Two problems involving compensation are studied in the context of the MEIC (Medium Energy Electron Ion Collider) project at Jefferson Laboratory. Several chromaticity (the energy dependence of the particle tune) compensation methods are evaluated numerically and deployed in a figure eight ring designed for the electrons in the collider. Furthermore, transverse coupling optics have been developed to compensate the coupling introduced by the spin rotators in the MEIC electron ring design.

Hisham Kamal Sayed

2011-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "techniques principal elements" 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

Air Pollution with Heavy Metals and Radionuclides in Slovakia Studied by the Moss Biomonitoring Technique  

E-Print Network [OSTI]

Applying the moss biomonitoring technique to air pollution studies in Slovakia, heavy metals, rare-earth elements, actinides (U and Th) were determined in 86 moss samples from the European moss survey 2000 by means of epithermal neutron activation analysis at the IBR-2 reactor (Dubna). Such elements as In, Cu, Cd, Hg and Pb were determined by AAS in the Forest Research Institute, Zvolen (Slovakia). The results of measurement of the natural radionuclides ^{210}Pb, ^{7}Be, ^{137}Cs and ^{40}K in 11 samples of moss are also reported. A comparison with the results from moss surveys 1991 and 1995 revealed previously unknown tendencies of air pollution in the examined areas.

Florek, M; Mankovska, B; Oprea, K; Pavlov, S S; Steinnes, E; Sykora, I

2001-01-01T23:59:59.000Z

342

Identifying Effective School Principals  

E-Print Network [OSTI]

our calculated adjusted gain scores. 6 Table 3: Summary of Adjusted Gains By Year 1996-2005 Year Total Campuses with Adjusted Gains Mean Std. Dev. Min Max All Years 54,628 1.750 11.489 -117.664 116.212 1996 5,722 1.154 11.740 -111.978 88...

Fernandez, Kandyce; Flores, Santa; Huang, Emily; Igwe, Carolyn; McDonald, Leslie; Stroud, Ryan; Willis, Rebecca; Dugat, Amber

2007-01-01T23:59:59.000Z

343

Methodology Principal results Conclusions  

E-Print Network [OSTI]

Strong positive growth responses to salinity by Ceriops tagal, a commonly occurring mangrove of the Gujarat coast of India

Neha T. Patel; Ajit Gupta; Amar Nath P

344

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergy PrivacyPeter M.

345

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergy PrivacyPeter

346

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergy PrivacyPeterJuan

347

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergy

348

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ. C. Séamus

349

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ. C.

350

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ. C.Laura H.

351

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ. C.Laura

352

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ. C.LauraAlexei

353

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ.

354

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ.Anthony J.

355

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ.Anthony

356

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A AnnualEnergyEnergyJ.AnthonyCedomir

357

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64A

358

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64AAlexei Tsvelik Condensed Matter

359

Energy Programs | Principal Investigators  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for37 EastEIA-64AAlexei Tsvelik Condensed MatterDale

360

Principal Investigator Alain Benoit  

E-Print Network [OSTI]

.-X. Désert Installation & environment A. Benoit or S. Leclercq or S. Navarro Science F.-X. Désert Installation and Environment.Installation and Environment. S. Leclercq - A. Benoit, S. Navarro - IRAM 30-m

Leclercq, Samuel

Note: This page contains sample records for the topic "techniques principal elements" 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

The Composition of Interstellar Grains Toward Zeta Ophiuchi: Constraining the Elemental Budget Near the Diffuse-Dense Cloud Transition  

E-Print Network [OSTI]

We investigate the composition of interstellar grains along the line of sight toward Zeta Ophiuchi, a well-studied environment near the diffuse-dense cloud transition. A spectral decomposition analysis of the solid-state absorbers is performed using archival spectroscopic observations from the Spitzer Space Telescope and Infrared Space Observatory. We find strong evidence for the presence of sub-micron-sized amorphous silicate grains, principally comprised of olivine-like composition, with no convincing evidence of H2O ice mantles. However, tentative evidence for thick H2O ice mantles on large (a ~ 2.8 microns) grains is presented. Solid-state abundances of elemental Mg, Si, Fe, and O are inferred from our analysis and compared to standard reference abundances. We find that nearly all of elemental Mg and Si along the line of sight are present in amorphous silicate grains, while a substantial fraction of elemental Fe resides in compounds other than silicates. Moreover, we find that the total abundance of eleme...

Poteet, Charles A; Draine, Bruce T

2015-01-01T23:59:59.000Z

362

Upgraded HFIR Fuel Element Welding System  

SciTech Connect (OSTI)

The welding of aluminum-clad fuel plates into aluminum alloy 6061 side plate tubing is a unique design feature of the High Flux Isotope Reactor (HFIR) fuel assemblies as 101 full-penetration circumferential gas metal arc welds (GMAW) are required in the fabrication of each assembly. In a HFIR fuel assembly, 540 aluminum-clad fuel plates are assembled into two nested annular fuel elements 610 mm (24-inches) long. The welding process for the HFIR fuel elements was developed in the early 1960 s and about 450 HFIR fuel assemblies have been successfully welded using the GMAW process qualified in the 1960 s. In recent years because of the degradation of the electronic and mechanical components in the old HFIR welding system, reportable defects in plate attachment or adapter welds have been present in almost all completed fuel assemblies. In October 2008, a contract was awarded to AMET, Inc., of Rexburg, Idaho, to replace the old welding equipment with standard commercially available welding components to the maximum extent possible while maintaining the qualified HFIR welding process. The upgraded HFIR welding system represents a major improvement in the welding system used in welding HFIR fuel elements for the previous 40 years. In this upgrade, the new inner GMAW torch is a significant advancement over the original inner GMAW torch previously used. The innovative breakthrough in the new inner welding torch design is the way the direction of the cast in the 0.762 mm (0.030-inch) diameter aluminum weld wire is changed so that the weld wire emerging from the contact tip is straight in the plane perpendicular to the welding direction without creating any significant drag resistance in the feeding of the weld wire.

Sease, John D [ORNL

2010-02-01T23:59:59.000Z

363

12.479 Trace-Element Geochemistry, Spring 2009  

E-Print Network [OSTI]

The emphasis of this course is to use Trace Element Geochemistry to understand the origin and evolution of igneous rocks. The approach is to discuss the parameters that control partitioning of trace elements between phases ...

Frey, Frederick

364

GNEP Element:Expand Domestic Use of Nuclear Power | Department...  

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

Expand Domestic Use of Nuclear Power GNEP Element:Expand Domestic Use of Nuclear Power A report discussing the intentions of the GNEP. GNEP Element:Expand Domestic Use of Nuclear...

365

On Some Versions of the Element Agglomeration AMGe Method  

SciTech Connect (OSTI)

The present paper deals with element-based AMG methods that target linear systems of equations coming from finite element discretizations of elliptic PDEs. The individual element information (element matrices and element topology) is the main input to construct the AMG hierarchy. We study a number of variants of the spectral agglomerate element based AMG method. The core of the algorithms relies on element agglomeration utilizing the element topology (built recursively from fine to coarse levels). The actual selection of the coarse degrees of freedom (dofs) is based on solving large number of local eigenvalue problems. Additionally, we investigate strategies for adaptive AMG as well as multigrid cycles that are more expensive than the V-cycle utilizing simple interpolation matrices and nested conjugate gradient (CG) based recursive calls between the levels. The presented algorithms are illustrated with an extensive set of experiments based on a matlab implementation of the methods.

Lashuk, I; Vassilevski, P

2007-08-09T23:59:59.000Z

366

Defining functional DNA elements in the human genome  

E-Print Network [OSTI]

With the completion of the human genome sequence, attention turned to identifying and annotating its functional DNA elements. As a complement to genetic and comparative genomics approaches, the Encyclopedia of DNA Elements ...

Kellis, Manolis

367

Notes 01. Modeling of mechanical (lumped parameter) elements  

E-Print Network [OSTI]

Fundamental elements in mechanical systems: inertias, stiffness and damping elements. Equivalent spring coefficients and associated potential energy. Equivalent mass or inertia coefficients and associated kinetic energy. Equations of motion of a...

San Andres, Luis

2008-01-01T23:59:59.000Z

368

Heat Exchanger With Internal Pin Elements  

DOE Patents [OSTI]

A heat exchanger/heater comprising a tubular member having a fluid inlet end, a fluid outlet end and plurality of pins secured to the interior wall of the tube. Various embodiments additionally comprise a blocking member disposed concentrically inside the pins, such as a core plug or a baffle array. Also disclosed is a vapor generator employing an internally pinned tube, and a fluid-heater/heat-exchanger utilizing an outer jacket tube and fluid-side baffle elements, as well as methods for heating a fluid using an internally pinned tube.

Gerstmann, Joseph (Framingham, MA); Hannon, Charles L. (Arlington, MA)

2004-01-13T23:59:59.000Z

369

Electrical connection structure for a superconductor element  

DOE Patents [OSTI]

The invention relates to an electrical connection structure for a superconductor element cooled by a cryogenic fluid and connected to an electrical bushing, which bushing passes successively through an enclosure at an intermediate temperature between ambient temperature and the temperature of the cryogenic fluid, and an enclosure at ambient temperature, said bushing projecting outside the ambient temperature enclosure. According to the invention, said intermediate enclosure is filled at least in part with a solid material of low thermal conductivity, such as a polyurethane foam or a cellular glass foam. The invention is applicable to connecting a superconductor cable at cryogenic temperature to a device for equipment at ambient temperature.

Lallouet, Nicolas; Maguire, James

2010-05-04T23:59:59.000Z

370

Alpha decay chains from element 113  

E-Print Network [OSTI]

Theoretical estimates of $\\alpha$-decay half lives of several nuclei in the decay from element 113 are presented. Calculations in a WKB framework using DDM3Y interaction and experimental Q-values are in good agreement with the experimental data. Half life calculations are found to be quite sensitive to the Q-values and angular momenta transfers. Calculated decay lifetime decreases, owing to more penetrability as well as thinner barrier, as Q-value increases. Deviations to this predominant behaviour observed in some recent experimental data may be attributed to non zero spin-parities in some cases.

P. Roy Chowdhury; D. N. Basu; C. Samanta

2007-04-30T23:59:59.000Z

371

Eddy current measurement of tube element spacing  

DOE Patents [OSTI]

A method of electromagnetically measuring the distance between adjacent tube elements in a heat exchanger. A cylindrical, high magnetic permeability ferrite slug is placed in the tube adjacent the spacing to be measured. A bobbin or annular coil type probe operated in the absolute mode is inserted into a second tube adjacent the spacing to be measured. From prior calibrations on the response of the eddy current coil, the signals from the coil, when sensing the presence of the ferrite slug, are used to determine the spacing between the tubes.

Latham, Wayne Meredith (Forest, VA); Hancock, Jimmy Wade (Lynchburg, VA); Grut, Jayne Marie (Madison Heights, VA)

1998-01-01T23:59:59.000Z

372

Elements of doing work at SSRL (rev  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series toESnet4: Networking for the‹Electronic StructureElements of a

373

FORTE antenna element and release mechanism design  

SciTech Connect (OSTI)

The Fast On-Orbit Recording of Transient Events (FORTE) satellite being built by Los Alamos National Laboratory (LANL) and Sandia National Laboratories (SNL) has as its most prominent feature a large deployable (11 m by 5 m) log periodic antenna to monitor emissions from electrical storms on the Earth. This paper describes the antenna and the design for the long elements and explains the dynamics of their deployment and the damping system employed. It also describes the unique paraffin-actuated reusable tie-down and release mechanism employed in the system.

Rohweller, D.J. [Astro Aerospace Corp., Carpinteria, CA (United States); Butler, T.Af. [Los Alamos National Lab., NM (United States)

1995-02-01T23:59:59.000Z

374

Subranging technique using superconducting technology  

DOE Patents [OSTI]

Subranging techniques using "digital SQUIDs" are used to design systems with large dynamic range, high resolution and large bandwidth. Analog-to-digital converters (ADCs) embodying the invention include a first SQUID based "coarse" resolution circuit and a second SQUID based "fine" resolution circuit to convert an analog input signal into "coarse" and "fine" digital signals for subsequent processing. In one embodiment, an ADC includes circuitry for supplying an analog input signal to an input coil having at least a first inductive section and a second inductive section. A first superconducting quantum interference device (SQUID) is coupled to the first inductive section and a second SQUID is coupled to the second inductive section. The first SQUID is designed to produce "coarse" (large amplitude, low resolution) output signals and the second SQUID is designed to produce "fine" (low amplitude, high resolution) output signals in response to the analog input signals.

Gupta, Deepnarayan (Hawthorne, NY)

2003-01-01T23:59:59.000Z

375

Shielded regeneration heating element for a particulate filter  

DOE Patents [OSTI]

An exhaust system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A catalyst substrate or a flow converter is disposed upstream from said heating element. The catalyst substrate oxidizes the exhaust prior to reception by the heating element. The flow converter converts turbulent exhaust flow to laminar exhaust flow prior to reception by the heating element.

Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

2011-01-04T23:59:59.000Z

376

Residential Energy Efficiency Financing: Key Elements of Program Design  

Broader source: Energy.gov [DOE]

Presents key programmatic elements and context of financing initiatives, including contractor support, rebates, quality assurance, and more.

377

electroseismic monitoring of co2 sequestration: a finite element ...  

E-Print Network [OSTI]

Keywords: Electroseismic Modeling, Poroelasticity, CO2 sequestration, Finite element methods. 2000 AMS ... carbon dioxide emissisons into the atmosphere.

Fabio Zyserman

378

A User's Guide to the Encyclopedia of DNA Elements (ENCODE)  

E-Print Network [OSTI]

The mission of the Encyclopedia of DNA Elements (ENCODE) Project is to enable the scientific and medical communities to

Bernstein, Bradley E.

379

Effect of Microbial Activity on Trace Element Release from Sewage  

E-Print Network [OSTI]

Effect of Microbial Activity on Trace Element Release from Sewage Sludge S H A B N A M Q U R E S H in mobilization of trace elements from land-applied wastewater sludge is not well-defined. Our study examined-effective management alternative. Unfor- tunately, sewage sludge also contains potentially toxic trace elements

Walter, M.Todd

380

Development of a finite element model of decompressive craniectomy  

E-Print Network [OSTI]

of high strains were comparatively small. Mesh. Axi-symmetric quadratic elements with reduced inte- gration (Abaqus element CAX8RPH) were used in all FE models. A fine mesh was created directly under the craniectomy edge with an average element length of 0...

Fletcher, Tim L.; Kolias, Angelos G.; Hutchinson, Peter J. A.; Sutcliffe, Michael P. F.

2014-07-15T23:59:59.000Z

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


381

1 INTRODUCTION The rare earth elements (REE's) form a unique  

E-Print Network [OSTI]

1 INTRODUCTION The rare earth elements (REE's) form a unique chemical set wherein the gradual October 1991 to December 1993. Clean A time series of dissolved rare earth elements in the lower University, State University, AR 72467 ABSTRACT: Dissolved rare earth element (REE) concentrations were

Chen, Zhongxing

382

RARE EARTH ELEMENT SENSITIVITY FACTORS IN CALCIC PLAGIOCLASE (ANORTHITE)  

E-Print Network [OSTI]

RARE EARTH ELEMENT SENSITIVITY FACTORS IN CALCIC PLAGIOCLASE (ANORTHITE) C. Floss and B. Jolliff Mc Brookings Drive, St. Louis, MO 63130 1. Introduction The rare earth elements (REE) are sensitive indicators concentrations for each sample are listed in Table 1 and are shown in Fig. 1. Table 1. Rare Earth Element Data

383

Interval Finite Element Methods: New Directions Rafi Muhanna1  

E-Print Network [OSTI]

Interval Finite Element Methods: New Directions Rafi Muhanna1 , Vladik Kreinovich2 , Pavel Sol´in2 advanced numerical methods to tackle these problems, such as finite element methods (FEM). Lately, new advanced version of these methods have appeared, such as hierarchic higher-order finite element methods (hp

Kreinovich, Vladik

384

Introduction to Finite Element Methods \\Lambda Paul S. Heckbert  

E-Print Network [OSTI]

Introduction to Finite Element Methods \\Lambda Paul S. Heckbert Carnegie Mellon University Global be solved numerically. In this chapter we explain some of the basics of the finite element method Illumination course notes, SIGGRAPH '93, Anaheim, Aug. 1993 4­1 #12; 4­2 Introduction to Finite Element Methods

Treuille, Adrien

385

A multiscale preconditioner for stochastic mortar mixed finite elements  

E-Print Network [OSTI]

physical models in different subdomains. The mortar finite element method is a generalization is the stochastic collocation method [4,40,39]. It combines a finite element discretiza- tion in physical space the approximation properties of the stochastic finite element method [5,37], making it more efficient than MCS

Yotov, Ivan

386

The Mimetic Finite Element Method and the Virtual Element Method for elliptic problems with arbitrary regularity.  

SciTech Connect (OSTI)

We develop and analyze a new family of virtual element methods on unstructured polygonal meshes for the diffusion problem in primal form, that use arbitrarily regular discrete spaces V{sub h} {contained_in} C{sup {alpha}} {element_of} N. The degrees of freedom are (a) solution and derivative values of various degree at suitable nodes and (b) solution moments inside polygons. The convergence of the method is proven theoretically and an optimal error estimate is derived. The connection with the Mimetic Finite Difference method is also discussed. Numerical experiments confirm the convergence rate that is expected from the theory.

Manzini, Gianmarco [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

387

Superheavy Element Nuclear Chemistry at RIKEN  

SciTech Connect (OSTI)

A gas-jet transport system has been coupled to the RIKEN gas-filled recoil ion separator GARIS to startup superheavy element (SHE) chemistry at RIKEN. The performance of the system was appraised using an isotope of element 104, {sup 261}Rf, produced in the {sup 248}Cm({sup 18}O,5n){sup 261}Rf reaction. Alpha-particles of {sup 261}Rf separated with GARIS and extracted to a chemistry laboratory were successfully identified with a rotating wheel apparatus for alpha spectrometry. The setting parameters such as the magnetic field of the separator and the gas-jet conditions were optimized. The present results suggest that the GARIS/gas-jet system is a promising approach for exploring new frontiers in SHE chemistry: (i) the background radioactivities of unwanted reaction products are strongly suppressed, (ii) the intense beam is absent in the gas-jet chamber and hence high gas-jet efficiency is achieved, and (iii) the beam-free condition also allows for investigations of new chemical systems.

Haba, Hiromitsu; Kaji, Daiya; Kasamatsu, Yoshitaka; Kudou, Yuki; Morimoto, Kouji; Morita, Kosuke; Ozeki, Kazutaka; Yoneda, Akira [Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198 (Japan); Kikunaga, Hidetoshi; Komori, Yukiko; Ooe, Kazuhiro; Shinohara, Atsushi; Yoshimura, Takashi [Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043 (Japan); Sato, Nozomi; Toyoshima, Atsushi [Advanced Science Research Center, JAEA, Tokai, Ibaraki 319-1195 (Japan); Yokoyama, Akihiko [Institute of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa 920-1192 (Japan)

2010-05-12T23:59:59.000Z

388

Nuclear Reactions Used For Superheavy Element Research  

SciTech Connect (OSTI)

Some of the most fascinating questions about the limits of nuclear stability are confronted in the heaviest nuclei. How many more new elements can be synthesized? What are the nuclear and chemical properties of these exotic nuclei? Does the 'Island of Stability' exist and can we ever explore the isotopes inhabiting that nuclear region? This paper will focus on the current experimental research on the synthesis and characterization of superheavy nuclei with Z>112 from the Dubna/Livermore collaboration. Reactions using {sup 48}Ca projectiles from the U400 cyclotron and actinide targets ({sup 233,238}U, {sup 237}Np, {sup 242,244}Pu, {sup 243}Am, {sup 245,248}Cm, {sup 249}Cf) have been investigated using the Dubna Gas Filled Recoil Separator in Dubna over the last 8 years. In addition, several experiments have been performed to investigate the chemical properties of some of the observed longer-lived isotopes produced in these reactions. Some comments will be made on nuclear reactions used for the production of the heaviest elements. A summary of the current status of the upper end of the chart of nuclides will be presented.

Stoyer, Mark A. [N Division, Physical Sciences Directorate, Lawrence Livermore National Laboratory, Livermore CA 94550 (United States)

2008-04-17T23:59:59.000Z

389

Nuclear reactions used for superheavy element research  

SciTech Connect (OSTI)

Some of the most fascinating questions about the limits of nuclear stability are confronted in the heaviest nuclei. How many more new elements can be synthesized? What are the nuclear and chemical properties of these exotic nuclei? Does the 'Island of Stability' exist and can we ever explore the isotopes inhabiting that nuclear region? This paper will focus on the current experimental research on the synthesis and characterization of superheavy nuclei with Z > 112 from the Dubna/Livermore collaboration. Reactions using 48Ca projectiles from the U400 cyclotron and actinide targets ({sup 233,238}U, {sup 237}Np, {sup 242,244}Pu, {sup 243}Am, {sup 245,248}Cm, {sup 249}Cf) have been investigated using the Dubna Gas Filled Recoil Separator in Dubna over the last 8 years. In addition, several experiments have been performed to investigate the chemical properties of some of the observed longer-lived isotopes produced in these reactions. Some comments will be made on nuclear reactions used for the production of the heaviest elements. A summary of the current status of the upper end of the chart of nuclides will be presented.

Stoyer, M A

2008-02-26T23:59:59.000Z

390

Nuclear Thermal Rocket Element Environmental Simulator (NTREES)  

SciTech Connect (OSTI)

To support a potential future development of a nuclear thermal rocket engine, a state-of-the-art non nuclear experimental test setup has been constructed to evaluate the performance characteristics of candidate fuel element materials and geometries in representative environments. The test device simulates the environmental conditions (minus the radiation) to which nuclear rocket fuel components could be subjected during reactor operation. Test articles mounted in the simulator are inductively heated in such a manner as to accurately reproduce the temperatures and heat fluxes normally expected to occur as a result of nuclear fission while at the same time being exposed to flowing hydrogen. This project is referred to as the Nuclear Thermal Rocket Element Environment Simulator or NTREES. The NTREES device is located at the Marshall Space flight Center in a laboratory which has been modified to accommodate the high powers required to heat the test articles to the required temperatures and to handle the gaseous hydrogen flow required for the tests. Other modifications to the laboratory include the installation of a nitrogen gas supply system and a cooling water supply system. During the design and construction of the facility, every effort was made to comply with all pertinent regulations to provide assurance that the facility could be operated in a safe and efficient manner. The NTREES system can currently supply up to 50 kW of inductive heating to the fuel test articles, although the facility has been sized to eventually allow test article heating levels of up to several megawatts.

Emrich, William J. Jr. [NASA--Marshall Space Flight Center, M.S. ER24, Huntsville, Alabama 35812 (United States)

2008-01-21T23:59:59.000Z

391

Element Abundances through the Cosmic Ages  

E-Print Network [OSTI]

The horizon for studies of element abundances has expanded dramatically in the last ten years. Once the domain of astronomers concerned chiefly with stars and nearby galaxies, this field has now become a key component of observational cosmology, as technological advances have made it possible to measure the abundances of several chemical elements in a variety of environments at redshifts up to z = 4, when the universe was in its infancy. In this series of lectures I summarise current knowledge on the chemical make-up of distant galaxies observed directly in their starlight, and of interstellar and intergalactic gas seen in absorption against the spectra of bright background sources. The picture which is emerging is one where the universe at z = 3 already included many of the constituents of today's galaxies-even at these early times we see evidence for Population I and II stars, while the `smoking gun' for Population III objects may be hidden in the chemical composition of the lowest density regions of the intergalactic medium, yet to be deciphered.

Max Pettini

2003-03-12T23:59:59.000Z

392

Chemical Elements at High and Low Redshifts  

E-Print Network [OSTI]

The past few years have seen a steady progress in the determination of element abundances at high redshifts, with new and more accurate measures of metallicities in star-forming galaxies, in QSO absorbers, and in the intergalactic medium. We have also become more aware of the limitations of the tools at our disposal in such endeavours. I summarise these recent developments and--in tune with the theme of this meeting--consider the clues which chemical abundance studies offer to the links between the high redshift galaxy populations and today's galaxies. The new data are `fleshing out' the overall picture of element abundances at redshifts z = 2 - 3 which has been gradually coming into focus over the last decade. In particular, we can now account for at least 40% of the metals produced by the global star formation activity in the universe from the Big Bang to z = 2.5, and we have strong indications of where the remainder are likely to be found.

Max Pettini

2006-03-02T23:59:59.000Z

393

The Relationships of Diesel Fuel Properties, Chemistry, and HCCI Engine Performance as Determined by Principal Component Analysis  

SciTech Connect (OSTI)

In order to meet common fuel specifications such as cetane number and volatility, a refinery must blend a number of refinery stocks derived from various process units in the refinery. Fuel chemistry can be significantly altered in meeting fuel specifications. Additionally, fuel specifications are seldom changed in isolation, and the drive to meet one specification may significantly alter other specifications or fuel chemistry. Homogeneous charge compression ignition (HCCI) engines depend on the kinetic behavior of a fuel to achieve reliable ignition and are expected to be more dependent on fuel specifications and chemistry than today's conventional engines. Regression analysis can help in determining the underlying relationships between fuel specifications, chemistry, and engine performance. Principal component analysis (PCA) was used in this work, because of its ability to deal with co-linear variables and to uncover 'hidden' relationships in the data. In this paper, a set of 11 diesel fuels with widely varying properties were run in a simple HCCI engine. Fuel properties and engine performance are examined to identify underlying fuel relationships and to determine the interplay between engine behavior and fuels. Results indicate that fuel efficiency is mainly controlled by a collection of specifications related to density and energy content and ignition characteristics are controlled mainly by cetane number.

Bunting, Bruce G [ORNL; Crawford, Robert W [Rincon Ranch Consulting

2007-01-01T23:59:59.000Z

394

Automated Classification of Stellar Spectra. II: Two-Dimensional Classification with Neural Networks and Principal Components Analysis  

E-Print Network [OSTI]

We investigate the application of neural networks to the automation of MK spectral classification. The data set for this project consists of a set of over 5000 optical (3800-5200 AA) spectra obtained from objective prism plates from the Michigan Spectral Survey. These spectra, along with their two-dimensional MK classifications listed in the Michigan Henry Draper Catalogue, were used to develop supervised neural network classifiers. We show that neural networks can give accurate spectral type classifications (sig_68 = 0.82 subtypes, sig_rms = 1.09 subtypes) across the full range of spectral types present in the data set (B2-M7). We show also that the networks yield correct luminosity classes for over 95% of both dwarfs and giants with a high degree of confidence. Stellar spectra generally contain a large amount of redundant information. We investigate the application of Principal Components Analysis (PCA) to the optimal compression of spectra. We show that PCA can compress the spectra by a factor of over 30 while retaining essentially all of the useful information in the data set. Furthermore, it is shown that this compression optimally removes noise and can be used to identify unusual spectra.

Coryn A. L. Bailer-Jones; Mike Irwin; Ted von Hippel

1998-03-05T23:59:59.000Z

395

Modeling techniques for simulating well behavior  

E-Print Network [OSTI]

This thesis is a catalog of modeling techniques useful in simulating well behavior in certain types of reservoirs that are often encountered in petroleum reservoirs. Emphasis has been placed on techniques that can be used with any conventional...

Rattu, Bungen Christina

2002-01-01T23:59:59.000Z

396

Constraining the 0?2? matrix elements by nuclear structure observables  

E-Print Network [OSTI]

The discovery that neutrinos have finite rest mass has led to renewed interest in neutrinoless double beta decay. The development of large-scale experiments to search for neutrinoless double beta decay has increased the probability of a credible observation of the process in the near future. The reliability of calculations of the associated nuclear matrix elements is likely soon to become a critical issue. In this paper experimental techniques that access properties of the ground-state wave functions of double beta decay candidates, the occupancies of valence single- particle orbitals and pairing correlations, are summarized and the experimental data for candidate nuclei are reviewed. The results are discussed in relation to questions concerning which aspects of nuclear structure may play an important role in determining the nuclear matrix elements for neutrinoless double beta decay.

S. J. Freeman; J. P. Schiffer

2012-07-18T23:59:59.000Z

397

Uncertainty Analysis on the Design of Thermal Conductivity Measurement by a Guarded Cut-Bar Technique  

SciTech Connect (OSTI)

A technique adapted from the guarded-comparative-longitudinal heat flow method was selected for the measurement of the thermal conductivity of a nuclear fuel compact over a temperature range characteristic of its usage. This technique fulfills the requirement for non-destructive measurement of the composite compact. Although numerous measurement systems have been created based on the guarded comparative method, comprehensive systematic (bias) and measurement (precision) uncertainty associated with this technique have not been fully analyzed. In addition to the geometric effect in the bias error, which has been analyzed previously, this paper studies the working condition which is another potential error source. Using finite element analysis, this study showed the effect of these two types of error sources in the thermal conductivity measurement process and the limitations in the design selection of various parameters by considering their effect on the precision error. The results and conclusions provide valuable reference for designing and operating an experimental measurement system using this technique.

Jeff Phillips; Changhu Xing; Colby Jensen; Heng Ban1

2011-07-01T23:59:59.000Z

398

ARPEFS as an analytic technique  

SciTech Connect (OSTI)

Two modifications to the ARPEFS technique are introduced. These are studied using p(2 {times} 2)S/Cu(001) as a model system. The first modification is the obtaining of ARPEFS {chi}(k) curves at temperatures as low as our equipment will permit. While adding to the difficulty of the experiment, this modification is shown to almost double the signal-to-noise ratio of normal emission p(2 {times} 2)S/Cu(001) {chi}(k) curves. This is shown by visual comparison of the raw data and by the improved precision of the extracted structural parameters. The second change is the replacement of manual fitting of the Fourier filtered {chi}(k) curves by the use of the simplex algorithm for parameter determination. Again using p(2 {times} 2)S/Cu(001) data, this is shown to result in better agreement between experimental {chi}(k) curves and curves calculated based on model structures. The improved ARPEFS is then applied to p(2 {times} 2)S/Ni(111) and ({radical}3 {times} {radical}3) R30{degree}S/Ni(111). For p(2 {times} 2)S/Cu(001) we find a S-Cu bond length of 2.26 {Angstrom}, with the S adatom 1.31 {Angstrom} above the fourfold hollow site. The second Cu layer appears to be corrugated. Analysis of the p(2 {times} 2)S/Ni(111) data indicates that the S adatom adatom adsorbs onto the FCC threefold hollow site 1.53 {Angstrom} above the Ni surface. The S-Ni bond length is determined to be 2.13 {Angstrom}, indicating an outwards shift of the first layer Ni atoms. We are unable to assign a unique structure to ({radical}3 {times} {radical}3)R30{degree}S/Ni(111). An analysis of the strengths and weaknesses of ARPEFS as an experimental and analytic technique is presented, along with a summary of problems still to be addressed.

Schach von Wittenau, A.E.

1991-04-01T23:59:59.000Z

399

Best practice techniques for environmental radiological monitoring  

E-Print Network [OSTI]

Best practice techniques for environmental radiological monitoring Science Report ­ SC030308/SR SCHO0407BMNL-E-P #12;ii Science Report Best Practice Techniques for Environmental Radiological #12;iv Science Report Best Practice Techniques for Environmental Radiological Monitoring Executive

400

Process to separate transuranic elements from nuclear waste  

DOE Patents [OSTI]

A process is described for removing transuranic elements from a waste chloride electrolytic salt containing transuranic elements in addition to rare earth and other fission product elements so the salt waste may be disposed of more easily and the valuable transuranic elements may be recovered for reuse. The salt is contacted with a cadmium-uranium alloy which selectively extracts the transuranic elements from the salt. The waste salt is generated during the reprocessing of nuclear fuel associated with the Integral Fast Reactor (IFR). 2 figs.

Johnson, T.R.; Ackerman, J.P.; Tomczuk, Z.; Fischer, D.F.

1989-03-21T23:59:59.000Z

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


401

Process to separate transuranic elements from nuclear waste  

DOE Patents [OSTI]

A process for removing transuranic elements from a waste chloride electrolytic salt containing transuranic elements in addition to rare earth and other fission product elements so the salt waste may be disposed of more easily and the valuable transuranic elements may be recovered for reuse. The salt is contacted with a cadmium-uranium alloy which selectively extracts the transuranic elements from the salt. The waste salt is generated during the reprocessing of nuclear fuel associated with the Integral Fast Reactor (IFR). 2 figs.

Johnson, T.R.; Ackerman, J.P.; Tomczuk, Z.; Fischer, D.F.

1988-07-12T23:59:59.000Z

402

PARALLEL COMPUTING OF UNSATURATED SOILS USING ELEMENT-BY-ELEMENT AND DOMAIN DEOMPOSITON METHODS  

E-Print Network [OSTI]

the processors with minimum data exchanges and load balancing. The linear system of equations was solved using and primary unknowns. The mass balance of water flow leads to the following equation: ( ) 0=+ ww wr div t n as in compacted soils used as fill material. The accurate analysis of unsaturated soils by the finite element

Augarde, Charles

403

SUMMARY OF AVC/H.264 LICENSE TERMS1 The AVC Patent Portfolio License is divided into two principal parts (see Diagram): (a)  

E-Print Network [OSTI]

SUMMARY OF AVC/H.264 LICENSE TERMS1 The AVC Patent Portfolio License is divided into two principal and may not be relied upon for any purpose. The AVC Patent Portfolio License provides the actual terms of license on which users may rely. 2 Sections 2.1 and 2.6 of the AVC Patent Portfolio License 3 Sections 2

Rodriguez, Carlos

404

TRAINING REQUIREMENTS FOR MNI LABORATORY PERSONNEL (version February, 2014) Principal Investigators are responsible for ensuring good occupational health and safety practices in their  

E-Print Network [OSTI]

TRAINING REQUIREMENTS FOR MNI LABORATORY PERSONNEL (version February, 2014) Principal Investigators ensuring all personnel receive the proper training according to McGill Environmental Health and Safety are taken through McGill Environmental Health and Safety[ Safety Training | Environmental Health and Safety

Shoubridge, Eric

405

Electrical bushing for a superconductor element  

DOE Patents [OSTI]

The invention relates to an electrical bushing serving to make a connection at ambient temperature to a superconductor element situated in an enclosure at cryogenic temperature. The electrical bushing passes successively through an enclosure at intermediate temperature between ambient temperature and cryogenic temperature, and an enclosure at ambient temperature, and it comprises a central electrical conductor surrounded by an electrically insulating sheath. According to the invention, an electrically conductive screen connected to ground potential surrounds the insulating sheath over a section that extends from the end of the bushing that is in contact with the enclosure at cryogenic temperature at least as far as the junction between the enclosure at intermediate temperature and the enclosure at ambient temperature. The invention is more particularly applicable to making a connection to a superconductor cable.

Mirebeau, Pierre; Lallouet, Nicolas; Delplace, Sebastien; Lapierre, Regis

2010-05-04T23:59:59.000Z

406

Elements of a nuclear criticality safety program  

SciTech Connect (OSTI)

Nuclear criticality safety programs throughout the United States are quite successful, as compared with other safety disciplines, at protecting life and property, especially when regarded as a developing safety function with no historical perspective for the cause and effect of process nuclear criticality accidents before 1943. The programs evolved through self-imposed and regulatory-imposed incentives. They are the products of conscientious individuals, supportive corporations, obliged regulators, and intervenors (political, public, and private). The maturing of nuclear criticality safety programs throughout the United States has been spasmodic, with stability provided by the volunteer standards efforts within the American Nuclear Society. This presentation provides the status, relative to current needs, for nuclear criticality safety program elements that address organization of and assignments for nuclear criticality safety program responsibilities; personnel qualifications; and analytical capabilities for the technical definition of critical, subcritical, safety and operating limits, and program quality assurance.

Hopper, C.M.

1995-07-01T23:59:59.000Z

407

High efficiency resonance ionization mass spectrometric analysis by external laser cavity enhancement techniques  

SciTech Connect (OSTI)

The demand to measure high dynamic range isotope ratios on small samples with resonance ionization mass spectrometry (RIMS) continues to increase. This paper discusses high ionization efficiency methods which can be applied to continuous wave (cw) RIMS to potentially achieve several tens of percent ionization efficiencies for certain elements. The primary technique under development to achieve this is an external laser cavity which can generate very high circulating laser powers. 12 refs., 3 figs.

Johnson, S.G.; Rios, E.L.; Miller, C.M.; Fearey, B.L.

1991-01-01T23:59:59.000Z

408

Stratigraphic statistical curvature analysis techniques  

SciTech Connect (OSTI)

SCAT applies statistical techniques to dipmeter data to identify patterns of bulk curvature, determine transverse and longitudinal structural directions, and reconstruct cross sections and contour maps. STRAT-SCAT applies the same concepts to geometric interpretation of multistoried unimodal, bimodal, or trough-type cross-bedding and also to seismic stratigraphy-scale stratigraphic structures. Structural dip, which comprises the bulk of dipmeter data, is related to beds that (statistically) were deposited with horizontal attitudes; stratigraphic dip is related to beds that were deposited with preferentially oriented nonhorizontal attitudes or to beds that assumed such attitudes because of differential compaction. Stratigraphic dip generates local zones of departure from structural dip on special SCAT plots. The RMS (root-mean-square) of apparent structural dip is greatest in the (structural) T-direction and least in the perpendicular L-direction; the RMS of stratigraphic dip (measured with respect to structural dip) is greatest in the stratigraphic T*-direction and least in the stratigraphic L*-direction. Multistoried, cross-bedding appears on T*-plots as local zones of either greater scatter or statistically significant departure of stratigraphic median dip from structural dip. In contrast, the L*-plot (except for trough-type cross-bedding) is sensitive to cross-bedding. Seismic stratigraphy-scale depositional sequences are identified on Mercator dip versus azimuth plots and polar tangent plots as secondary cylindrical-fold patterns imposed on global structural patterns. Progradational sequences generate local cycloid-type patterns on T*-plots, and compactional sequences generate local cycloid-type patterns on T*-plots, and compactional sequences generate local half-cusp patterns. Both features, however, show only structural dip on L*-plots.

Bengtson, C.A.; Ziagos, J.P.

1987-05-01T23:59:59.000Z

409

Permeability computation on a REV with an immersed finite element method  

SciTech Connect (OSTI)

An efficient method to compute permeability of fibrous media is presented. An immersed domain approach is used to represent the porous material at its microscopic scale and the flow motion is computed with a stabilized mixed finite element method. Therefore the Stokes equation is solved on the whole domain (including solid part) using a penalty method. The accuracy is controlled by refining the mesh around the solid-fluid interface defined by a level set function. Using homogenisation techniques, the permeability of a representative elementary volume (REV) is computed. The computed permeabilities of regular fibre packings are compared to classical analytical relations found in the bibliography.

Laure, P. [Laboratoire J.-A. Dieudonne, CNRS UMR 6621, Universite de Nice-Sophia Antipolis, Parc Valrose, 06108 Nice, Cedex 02 (France); Puaux, G.; Silva, L.; Vincent, M. [MINES ParisTech, CEMEF-Centre de Mise en Forme des Materiaux, CNRS UMR 7635, BP 207 1 rue Claude, Daunesse 06904 Sophia Antipolis cedex (France)

2011-05-04T23:59:59.000Z

410

Nuclear matrix elements from direct lifetime or cross-section measurements  

SciTech Connect (OSTI)

The method of simultaneous lifetime and g factor measurements using a plunger device and the RDDS and TDRIV techniques is introduced. Results on lifetimes and hyperfine-interaction parameters for 2{sup +}{sub 1} states in {sup 104-108}Pd, {sup 96,98,104}Ru, and {sup 92,94}Zr, using a plunger device. Another method to obtain electromagnetic matrix elements is direct cross section measurements using NRF. The method is outlined, and some recent results on {sup 76}Se are shown.

Werner, V.; Cooper, N.; Hinton, M.; Ilie, G.; Radeck, D. [Wright Nuclear Structure Laboratory, Yale University, P.O. Box 208120, New Haven, CT 06520-8120 (United States); Wright Nuclear Structure Laboratory, Yale University, P.O. Box 208120, New Haven, CT 06520-8120 (United States) and Department of Physics, University of Surrey, Guilford, GU27XH (United Kingdom); Wright Nuclear Structure Laboratory, Yale University, P.O. Box 208120, New Haven, CT 06520-8120 (United States) and National Institute for Physics and Nuclear Engineering, P.O. Box MG-6, Bucharest-Magurele (Romania); Wright Nuclear Structure Laboratory, Yale University, P.O. Box 208120, New Haven, CT 06520-8120 (United States) and Institut fuer Kernphysik, Universitaet zu Koeln, Zuelpicher Str. 77, 50937 Koeln (Germany)

2012-11-20T23:59:59.000Z

411

Closed formula for the matrix elements of the volume operator in canonical quantum gravity  

E-Print Network [OSTI]

We derive a closed formula for the matrix elements of the volume operator for canonical Lorentzian quantum gravity in four spacetime dimensions in the continuum in a spin-network basis. We also display a new technique of regularization which is state dependent but we are forced to it in order to maintain diffeomorphism covariance and in that sense it is natural. We arrive naturally at the expression for the volume operator as defined by Ashtekar and Lewandowski up to a state independent factor.

T. Thiemann

1996-06-29T23:59:59.000Z

412

VERIFICATION OF A NUMERICAL SIMULATION TECHNIQUE FOR NATURAL CONVECTION  

E-Print Network [OSTI]

on advanced passive cooling techniques. Systems Analysis andand fabrica- tion techniques. Cooling Systems Research. This

Gadgil, A.

2008-01-01T23:59:59.000Z

413

Uncooled thin film infrared imaging device with aerogel thermal isolation: Deposition and planarization techniques  

SciTech Connect (OSTI)

The authors have successfully integrated a thermally insulating silica aerogel thin film into a new uncooled monolithic thin film infrared (IR) imaging device. Compared to other technologies (bulk ceramic and microbridge), use of an aerogel layer provides superior thermal isolation of the pyroelectric imaging element from the relatively massive heat sinking integrated circuit. This results in significantly higher thermal and temporal resolutions. They have calculated noise equivalent temperature differences of 0.04--0.10 C from a variety of Pb{sub x}Zr{sub y}Ti{sub 1{minus}y}O{sub 3} (PZT) and Pb{sub x}La{sub 1{minus}x}Zr{sub y}Ti{sub 1{minus}y}O{sub 3} (PLZT) pyroelectric imaging elements in monolithic structures. In addition, use of aerogels results in an easier, less expensive fabrication process and a more robust device. Fabrication of these monolithic devices entails sol-gel deposition of the aerogel, sputter deposition of the electrodes, and solution chemistry deposition of the pyroelectric imaging elements. Uniform pyroelectric response is achieved across the device by use of appropriate planarization techniques. These deposition and planarization techniques are described. Characterization of the individual layers and monolithic structure using scanning electron microscopy, atomic force microscopy and Byer-Roundy techniques also is discussed.

Ruffner, J.A.; Clem, P.G.; Tuttle, B.A.; Brinker, C.J. [Sandia National Labs., Albuquerque, NM (United States); Sriram, C.S. [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Chemical and Nuclear Engineering; Bullington, J.A. [AMMPEC, Inc., Albuquerque, NM (United States)

1998-04-01T23:59:59.000Z

414

E-Print Network 3.0 - analyzing elemental composition Sample...  

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

SIMS trace- element data (up to 33 elements analyzed) are among... thermal processing. Bulk trace-element compositions: Our broad- beam SIMS data imply that vapor... refractory...

415

E-Print Network 3.0 - availability influences elemental Sample...  

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

. In other cases, technical limitations constrain the availability of an element. Rare-earth elements... the availability of an element. The ... Source: Colorado School of Mines,...

416

A Study of Comparative Analysis of Transposable Elements in filamentous fungi  

E-Print Network [OSTI]

fungus was reported- the Tad element from N. crassa. Sincedegenerate relatives of the Tad LINE-like element probablytransposable element called Tad was found to be still active

Zhou, Yi

2012-01-01T23:59:59.000Z

417

Chemical Properties of Elements 99 and 100 [Einsteinium and Fermium  

DOE R&D Accomplishments [OSTI]

A description of some of the chemical properties and of the methods used in the separations of elements 99 [Einsteinium] and 100 [Fermium] are given. The new elements exhibit the properties expected for the tenth and eleventh actinide elements. Attempts to produce an oxidation state greater than III of element 99 have been unsuccessful. In normal aqueous media only the III state of element 100 appears to exist. The relative spacings of the elution peaks of the new elements in some separations with ion exchange resin columns are the same as the relative spacings of the homologous lanthanide elements. The results of experiments involving cation exchange resins with very concentrated hydrochloric acid eluant show that the new elements, like the earlier actinides, are more strongly complexed than the lanthanides. The new elements also exist partially as anions in concentrated hydrochloric acid, as do earlier actinide elements, and they may be partially separated from each other by means of ion exchange resins. With some eluants interesting reversals of elution positions are observed in the region Bk-Cf-99-100, indicating complex ion formation involving unusual factors.

Seaborg, G. T.; Thompson, S. G.; Harvey, B. G.; Choppin, G. R.

1954-07-23T23:59:59.000Z

418

Summary compilation of shell element performance versus formulation.  

SciTech Connect (OSTI)

This document compares the finite element shell formulations in the Sierra Solid Mechanics code. These are finite elements either currently in the Sierra simulation codes Presto and Adagio, or expected to be added to them in time. The list of elements are divided into traditional two-dimensional, plane stress shell finite elements, and three-dimensional solid finite elements that contain either modifications or additional terms designed to represent the bending stiffness expected to be found in shell formulations. These particular finite elements are formulated for finite deformation and inelastic material response, and, as such, are not based on some of the elegant formulations that can be found in an elastic, infinitesimal finite element setting. Each shell element is subjected to a series of 12 verification and validation test problems. The underlying purpose of the tests here is to identify the quality of both the spatially discrete finite element gradient operator and the spatially discrete finite element divergence operator. If the derivation of the finite element is proper, the discrete divergence operator is the transpose of the discrete gradient operator. An overall summary is provided from which one can rank, at least in an average sense, how well the individual formulations can be expected to perform in applications encountered year in and year out. A letter grade has been assigned albeit sometimes subjectively for each shell element and each test problem result. The number of A's, B's, C's, et cetera assigned have been totaled, and a grade point average (GPA) has been computed, based on a 4.0-system. These grades, combined with a comparison between the test problems and the application problem, can be used to guide an analyst to select the element with the best shell formulation.

Heinstein, Martin Wilhelm; Hales, Jason Dean (Idaho National Laboratory, Idaho Falls, ID); Breivik, Nicole L.; Key, Samuel W. (FMA Development, LLC, Great Falls, MT)

2011-07-01T23:59:59.000Z

419

Comparison of different pressing techniques for the preparation of n-type silicon-germanium thermoelectric alloys  

SciTech Connect (OSTI)

Improvements to state-of-the-art Si{sub 80}Ge{sub 20} thermoelectric alloys have been observed in laboratory-scale samples by the powder metallurgy techniques of mechanical alloying and hot pressing. Incorporating these improvements in large scale compacts for the production of thermoelectric generator elements is the next step in achieving higher efficiency RTGs. This paper discusses consolidation of large quantities of mechanically alloyed powders into production size compacts. Differences in thermoelectric properties are noted between the compacts prepared by the standard technique of hot uniaxial pressing and hot isostatic pressing. Most significant is the difference in carrier concentration between the alloys prepared by the two consolidation techniques.

Harringa, J.L.; Cook, B.A.

1996-06-01T23:59:59.000Z

420

Uncertainty evaluation for the matrix 'solidified state' of fissionable elements  

SciTech Connect (OSTI)

In case of the analysis of the radioactive liquid samples, no matter the relative physical analysis method used, two impediments act that belong to the behavior in time of the dispersion state of the liquid samples to be analyzed and of the standard used in the analysis. That is, one of them refers to the state of the sample to be analyzed when being sampled, which 'alter' during the time elapsed from sampling up to the analysis of the sample. The other impediment is the natural change of the dispersion state of the standard radioactive solutions, due to the occurrence and evolution in time of the radiocolloidal and pseudo-radiocolloidal states. These radiocolloidal states are states of aggregation and they lead to the destruction of the homogeneity of the solutions. Taking into consideration the advantages offered by the relative physical methods of analysis as against the chemical or the radiochemical ones, different ways of eliminating these impediments have been tried. We eliminated these impediments processing the liquid reference materials (the solutions calibrated in radionuclides of interest), immediately after the preparation. This processing changes the liquid physical state of the reference materials in a 'solidified state'. Through this procedure the dispersion states of the samples, practically, can no longer be essentially modified in time and also ensure the uniform distribution of the radionuclides of interest in the elemental matrix of the samples 'state solidified'. The homogeneity of the distribution of the atoms of the radionuclides from the samples 'solidified state' was checked up through the track micromapping technique of the alpha particles. Through this technique, in the chemically etched track detectors that were put in direct contact with the sample for a determined period of time, the alpha exposure time of the detectors, micromaps of alpha tracks were obtained. These micromaps are retorts through tracks of the distributions atoms of fissionable elements (Thorium e.g.), of which, heavy charged particles, in this case the alpha radiations naturally emitted, were registered in the CR-39 track detectors. The density of alpha track from the obtained track micromaps was studied through common optic microscopy. Micromaps were studied counting the tracks on equal areas, in different measurement points. For the study of the foils prepared within the paper, the studied area was of 4.9 mm2, formed of 10 fields of 0.49 mm2 area each. The estimation of the uncertainty was carried out for all the sizes that were measured within the paper, no matter if they participate, directly or indirectly, in the estimation of the uncertainty regarding the homogeneity of the Thorium atoms distribution in the 'solidified state' foils of the standard solution calibrated in Thorium, such as: i) the weighted masses, ii) the dropped volumes of solution, iii) the alpha duration of exposure of the detectors, iv) the area studied on the surface of the micromap and v) the densities of alpha tracks. The procedure suggested allowed us to considerate that the homogeneity of alpha tracks distribution, on the surface and in thickness, is within the limits of 3.1%.

Iliescu, Elena; Iancso, Georgeta [National Institute of R and D for Physics and Nuclear Engineering-'Horia Hulubei', Str.Reactorului 30, P.O. BOX MG-6, Magurele (Romania)

2012-09-06T23:59:59.000Z

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


421

Eaton Throat-Valve Element prototype concept. Phase 1  

SciTech Connect (OSTI)

As part of an ongoing effort to improve techniques for simulating nuclear blasts, the US Army Research Laboratory has been studying the merits of computer-controlled valves. The valve studies have been aimed at providing the Department of Defense with the capacity to conduct nuclear blast and thermal survivability testing on full-scale tactical vehicles. This report documents the development and findings of a computer model that simulates the behavior of the Eaton-Throat Valve Element (ETVE) prototype, and describes a proposed modification concept for the ETVE. The computer model reveals three main findings: (1) the ETVE chatters during the open cycle, (2) the chatter is caused by the high gas forces on the sliding sleeve as the driver gas passes through its portholes, and (3) the chatter is aggravated because there is insufficient damping in the system. The INEL recommends opening the ETVE by sliding the sleeve toward the downstream end of the valve instead of toward the upstream end, as the ETVE is presently configured, and to provide additional damping to the system. However, neither of these configuration changes can be achieved easily, and a redesign and analysis f the ETVE must be completed prior to performing any work on the current ETVE prototype. The ETVE simulation model proved to be an extremely valuable tool in analyzing the qualitative nature of the valve`s operation. Further development of the model is recommended for quantitative analysis and design of the ETVE. This report explains the model and stress analysis findings, and proposes a redesign concept.

Stacey, M.R.; Arendts, J.G.; Berry, R.A.; Korth, G.E.; Schwieder, P.R.; Sekot, J.P.; Snow, S.D.

1993-12-01T23:59:59.000Z

422

Application of Mass Lumped Higher Order Finite Elements  

SciTech Connect (OSTI)

There are many interesting phenomena in extended-MHD such as anisotropic transport, mhd, 2-fluid effects stellarator and hot particles. Any one of them challenges numerical analysts, and researchers are seeking for higher order methods, such as higher order finite difference, higher order finite elements and hp/spectral elements. It is true that these methods give more accurate solution than their linear counterparts. However, numerically they are prohibitively expensive. Here we give a successful solution of this conflict by applying mass lumped higher order finite elements. This type of elements not only keep second/third order accuracy but also scale closely to linear elements by doing mass lumping. This is especially true for second order lump elements. Full M3D and anisotropic transport models are studied.

Chen, J.; Strauss, H. R.; Jardin, S. C.; Park, W.; Sugiyama, L. E.; Fu., G.; Breslau, J.

2005-11-01T23:59:59.000Z

423

Fundamentals and Techniques of Nonimaging  

SciTech Connect (OSTI)

This is the final report describing a long term basic research program in nonimaging optics that has led to major advances in important areas, including solar energy, fiber optics, illumination techniques, light detectors, and a great many other applications. The term ''nonimaging optics'' refers to the optics of extended sources in systems for which image forming is not important, but effective and efficient collection, concentration, transport, and distribution of light energy is. Although some of the most widely known developments of the early concepts have been in the field of solar energy, a broad variety of other uses have emerged. Most important, under the auspices of this program in fundamental research in nonimaging optics established at the University of Chicago with support from the Office of Basic Energy Sciences at the Department of Energy, the field has become very dynamic, with new ideas and concepts continuing to develop, while applications of the early concepts continue to be pursued. While the subject began as part of classical geometrical optics, it has been extended subsequently to the wave optics domain. Particularly relevant to potential new research directions are recent developments in the formalism of statistical and wave optics, which may be important in understanding energy transport on the nanoscale. Nonimaging optics permits the design of optical systems that achieve the maximum possible concentration allowed by physical conservation laws. The earliest designs were constructed by optimizing the collection of the extreme rays from a source to the desired target: the so-called ''edge-ray'' principle. Later, new concentrator types were generated by placing reflectors along the flow lines of the ''vector flux'' emanating from lambertian emitters in various geometries. A few years ago, a new development occurred with the discovery that making the design edge-ray a functional of some other system parameter permits the construction of whole new classes of devices with greatly expanded capabilities compared to conventional approaches. These ''tailored edge-ray'' designs have dramatically broadened the range of geometries in which nonimaging optics can provide a significant performance improvement. Considerable progress continues to be made in furthering the incorporation of nonimaging secondaries into practical high concentration and ultra-high concentration solar collector systems. In parallel with the continuing development of nonimaging geometrical optics, our group has been working to develop an understanding of certain fundamental physical optics concepts in the same context. In particular, our study of the behavior of classical radiance in nonimaging systems, has revealed some fundamentally important new understandings that we have pursued both theoretically and experimentally. The field is still relatively new and is rapidly gaining widespread recognition because it fuels many industrial applications. Because of this, during the final years of the project, our group at Chicago has been working more closely with a team of industrial scientists from Science Applications International Corporation (SAIC) at first informally, and later more formally, beginning in 1998, under a formal program initiated by the Department of Energy and incrementally funded through this existing grant. This collaboration has been very fruitful and has led to new conceptual breakthroughs which have provided the foundation for further exciting growth. Many of these concepts are described in some detail in the report.

O'Gallagher, J. J.; Winston, R.

2003-07-10T23:59:59.000Z

424

Combined passive bearing element/generator motor  

DOE Patents [OSTI]

An electric machine includes a cylindrical rotor made up of an array of permanent magnets that provide a N-pole magnetic field of even order (where N=4, 6, 8, etc.). This array of permanent magnets has bars of identical permanent magnets made of dipole elements where the bars are assembled in a circle. A stator inserted down the axis of the dipole field is made of two sets of windings that are electrically orthogonal to each other, where one set of windings provides stabilization of the stator and the other set of windings couples to the array of permanent magnets and acts as the windings of a generator/motor. The rotor and the stator are horizontally disposed, and the rotor is on the outside of said stator. The electric machine may also include two rings of ferromagnetic material. One of these rings would be located at each end of the rotor. Two levitator pole assemblies are attached to a support member that is external to the electric machine. These levitator pole assemblies interact attractively with the rings of ferromagnetic material to produce a levitating force upon the rotor.

Post, Richard F. (Walnut Creek, CA)

2000-01-01T23:59:59.000Z

425

Evaluation of flyash surface phenomena and the application of surface analysis technology. Summary report: Phase I. [44 elements; 86 references  

SciTech Connect (OSTI)

The factors governing the formation of flyash surfaces during and following coal combustion are reviewed. The competing chemical and physical processes during the evolution of inorganic material in coal during combustion into flyash are described with respect to various surface segregation processes. Two mechanisms leading to surface enrichment are volatilization-condensation processes and diffusion processes within individual flyash particles. The experimental evidence for each of these processes is reviewed. It is shown that the volatilization-condensation process is the major factor leading to trace element enrichment in smaller flyash particles. Evidence also exists from surface analyses of flyash and representative mineral matter that diffusion processes may lead to surface enrichment of elements not volatilized or cause transport of surface-condensed elements into the flyash matrix. The semiquantitative determination of the relative importance of these two processes can be determined by comparison of concentration versus particle size profiles with surface-depth profiles obtained using surface analysis techniques. A brief description of organic transformations on flyash surfaces is also presented. The various surface analytical techniques are reviewed and the relatively new technique of Static-Secondary Ion Mass Spectroscopy is suggested as having significant advantages in studies of surfaces and diffusion processes in model systems. Several recommendations are made for research relevant to flyash formation and processes occurring on flyash surfaces.

Smith, R.D.

1981-06-01T23:59:59.000Z

426

Efficient Algorithmic Techniques for Several Multidimensional ...  

E-Print Network [OSTI]

Politehnica University of Bucharest, Romania, mugurel.andreica@cs.pub.ro. Abstract: In this paper I present several novel, efficient, algorithmic techniques for.

Mugurel

2008-10-23T23:59:59.000Z

427

Eddy current technique for predicting burst pressure  

DOE Patents [OSTI]

A signal processing technique which correlates eddy current inspection data from a tube having a critical tubing defect with a range of predicted burst pressures for the tube is provided. The method can directly correlate the raw eddy current inspection data representing the critical tubing defect with the range of burst pressures using a regression technique, preferably an artificial neural network. Alternatively, the technique deconvolves the raw eddy current inspection data into a set of undistorted signals, each of which represents a separate defect of the tube. The undistorted defect signal which represents the critical tubing defect is related to a range of burst pressures utilizing a regression technique.

Petri, Mark C. (Yorkville, IL); Kupperman, David S. (Oak Park, IL); Morman, James A. (Woodridge, IL); Reifman, Jaques (Western Springs, IL); Wei, Thomas Y. C. (Downers Grove, IL)

2003-01-01T23:59:59.000Z

428

Uncertainty Quantification Techniques for Sensor Calibration...  

Office of Scientific and Technical Information (OSTI)

Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants Re-direct Destination: This report describes research towards the development of...

429

Computer vision techniques for underwater navigation  

E-Print Network [OSTI]

DCS) Chapter 2 Computer Vision . . 2.1 Labeling . . . . 2.2OF CALIFORNIA, SAN DIEGO Computer Vision Techniques fordegree Master of Science in Computer Science by Christopher

Barngrover, Christopher M.

2010-01-01T23:59:59.000Z

430

Uncertainty Quantification Techniques for Sensor Calibration...  

Office of Scientific and Technical Information (OSTI)

Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants Re-direct Destination: Temp Data Fields Ramuhalli, Pradeep; Lin, Guang; Crawford,...

431

Airborne electromagnetic surveys as a reconnaissance technique...  

Open Energy Info (EERE)

Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Abstract INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five...

432

Optimization Online - Smoothing techniques for solving semidefinite ...  

E-Print Network [OSTI]

Oct 5, 2009 ... Smoothing techniques for solving semidefinite programs with many constraints. Michael B rgisser(michael.buergisser ***at*** ifor.math.ethz.ch)

Michael B rgisser

2009-10-05T23:59:59.000Z

433

Compound and Elemental Analysis At Jemez Springs Area (Goff ...  

Open Energy Info (EERE)

and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, andor wells. References Fraser E. Goff, Cathy J....

434

Compound and Elemental Analysis At Yellowstone Region (Goff ...  

Open Energy Info (EERE)

and Elemental Analysis Activity Date Usefulness not indicated DOE-funding Unknown Notes Gas samples from fumaroles, springs, andor wells. References Cathy J. Janik, Fraser E....

435

Advanced Interactive Facades - Critical Elements for Future Green Buildings?  

E-Print Network [OSTI]

Elements for Future Green Buildings? Stephen Selkowitzelement for a “green building” that provides daylighting andcurrent interest in green buildings there was no shortage of

Selkowitz, Stephen; Aschehoug, Oyvind; Lee, Eleanor S.

2003-01-01T23:59:59.000Z

436

Climate Action Planning: A Review of Best Practices, Key Elements...  

Open Energy Info (EERE)

Planning: A Review of Best Practices, Key Elements, and Common Climate Strategies for Signatories to the American College & University Presidents' Climate Commitment Jump to:...

437

Trace Element Geochemical Zoning in the Roosevelt Hot Springs...  

Open Energy Info (EERE)

in the development of distinctive trace element signatures. Geochemical analysis of soil sample, shallow temperature gradient drill hole cuttings and deep drill hole cutting...

438

Trace-Element Distribution In An Active Hydrothermal System,...  

Open Energy Info (EERE)

trace-element dispersion patterns. Multielement analyses of surface rock samples, soil samples and drill cuttings from deep exploration wells provide a three-dimensional...

439

Compound and Elemental Analysis At Northern Basin & Range Region...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

440

Compound and Elemental Analysis At Central Nevada Seismic Zone...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

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


441

Trace Element Analysis At Walker-Lane Transitional Zone Region...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

442

Trace Element Analysis At Central Nevada Seismic Zone Region...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

443

Trace Element Analysis At Nw Basin & Range Region (Coolbaugh...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

444

Trace Element Analysis At Northern Basin & Range Region (Coolbaugh...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

445

Compound and Elemental Analysis At Nw Basin & Range Region (Coolbaugh...  

Open Energy Info (EERE)

diagnostic lithogeochemical tool for geothermal exploration, the analysis of lithium and other elements in tufa deposits could serve as exploration guides for hot spring...

446

Compound and Elemental Analysis At Long Valley Caldera Geothermal...  

Open Energy Info (EERE)

Area (Farrar, Et Al., 2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Long Valley Caldera Geothermal...

447

Compound and Elemental Analysis At Valles Caldera - Sulphur Springs...  

Open Energy Info (EERE)

and Elemental Analysis Activity Date - 2008 Usefulness useful regional reconnaissance DOE-funding Unknown Exploration Basis Characterization of previously unrecognized shallow...

448

Compound and Elemental Analysis At Valles Caldera - Redondo Geothermal...  

Open Energy Info (EERE)

and Elemental Analysis Activity Date - 2008 Usefulness useful regional reconnaissance DOE-funding Unknown Exploration Basis Characterization of previously unrecognized shallow...

449

Damping element for reducing the vibration of an airfoil  

DOE Patents [OSTI]

An airfoil (10) is provided with a tip (12) having an opening (14) to a center channel (24). A damping element (16) is inserted within the opening of the center channel, to reduce an induced vibration of the airfoil. The mass of the damping element, a spring constant of the damping element within the center channel, and/or a mounting location (58) of the damping element within the center channel may be adjustably varied, to shift a resonance frequency of the airfoil outside a natural operating frequency of the airfoil.

Campbell, Christian X; Marra, John J

2013-11-12T23:59:59.000Z

450

Compound and Elemental Analysis At Yellowstone Region (Hurwitz...  

Open Energy Info (EERE)

Yellowstone Region (Hurwitz, Et Al., 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Yellowstone Region...

451

Compound and Elemental Analysis At Dixie Valley Geothermal Area...  

Open Energy Info (EERE)

Unknown Exploration Basis The goal of this project was to create a database of rare earth elements found in exploration for geothermal resources. Notes Geothermal fluids from...

452

2-D discrete element modeling of unconsolidated sandstones.  

E-Print Network [OSTI]

??In this work unconsolidated sands saturated with heavy oil were modeled using a discrete element numerical model, (DEM). The DEM code was built in Mathematica… (more)

Franquet Barbara, Javier Alejandro

2012-01-01T23:59:59.000Z

453

Discovery of the Transuranium Elements (LBNL Summer Lecture Series)  

ScienceCinema (OSTI)

Summer Lecture Series 2006: Darleane Hoffman, a Berkeley Lab nuclear chemist, chronicles the discovery of the heaviest elements ? those much heavier than uranium and plutonium.

Hoffman, Darleane

2011-04-28T23:59:59.000Z

454

Compound and Elemental Analysis At Akutan Fumaroles Area (Kolker...  

Open Energy Info (EERE)

and Elemental Analysis Activity Date Usefulness useful DOE-funding Unknown Notes The chemistry of the hot springs strongly suggests the existence of a neutral chloride reservoir...

455

Self-Assembly of Polymer Nano-Elements on Sapphire  

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

Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured...

456

Process for synthesizing compounds from elemental powders and product  

DOE Patents [OSTI]

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

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

1993-01-01T23:59:59.000Z

457

Compound and Elemental Analysis At Fish Lake Valley Area (Deymonaz...  

Open Energy Info (EERE)

ENERGYGeothermal Home Exploration Activity: Compound and Elemental Analysis At Fish Lake Valley Area (Deymonaz, Et Al., 2008) Exploration Activity Details Location Fish...

458

EIS-0423: Storage and Management of Elemental Mercury | Department...  

Energy Savers [EERE]

for managing and storing elemental mercury at seven candidate locations (i.e., Colorado, Idaho, Missouri, Nevada, South Carolina, Texas, and Washington). The U.S....

459

Status of Segmented Element Thermoelectric Generator for Vehicle...  

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

ring which includes TE elements Advanced Thermoelectric Solutions - 10 - Liquid tanks are attached at each end of the TEG. The cooling liquid flows counter to the flow of...

460

Local Burn-Up Effects in the NBSR Fuel Element  

SciTech Connect (OSTI)

This study addresses the over-prediction of local power when the burn-up distribution in each half-element of the NBSR is assumed to be uniform. A single-element model was utilized to quantify the impact of axial and plate-wise burn-up on the power distribution within the NBSR fuel elements for both high-enriched uranium (HEU) and low-enriched uranium (LEU) fuel. To validate this approach, key parameters in the single-element model were compared to parameters from an equilibrium core model, including neutron energy spectrum, power distribution, and integral U-235 vector. The power distribution changes significantly when incorporating local burn-up effects and has lower power peaking relative to the uniform burn-up case. In the uniform burn-up case, the axial relative power peaking is over-predicted by as much as 59% in the HEU single-element and 46% in the LEU single-element with uniform burn-up. In the uniform burn-up case, the plate-wise power peaking is over-predicted by as much as 23% in the HEU single-element and 18% in the LEU single-element. The degree of over-prediction increases as a function of burn-up cycle, with the greatest over-prediction at the end of Cycle 8. The thermal flux peak is always in the mid-plane gap; this causes the local cumulative burn-up near the mid-plane gap to be significantly higher than the fuel element average. Uniform burn-up distribution throughout a half-element also causes a bias in fuel element reactivity worth, due primarily to the neutronic importance of the fissile inventory in the mid-plane gap region.

Brown N. R.; Hanson A.; Diamond, D.

2013-01-31T23:59:59.000Z

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


461

Efficient Techniques of ANN-Based Microwave  

E-Print Network [OSTI]

.g., sintering) MW NDE/NDT Technique Where Used W F CW F CW F CW F C WorkshopWorkshopWorkshopWorkshop #12 in closed systems ­ an attractive technology of NDE/NDT capable of serving many practical needs. W F CW F CW of all the proposed techniques: NDE/NDT of objects in closed systems (resonators or waveguides

Yakovlev, Vadim

462

Opto-electrokinetic manipulation technique for highperformance  

SciTech Connect (OSTI)

This communication first demonstrates bio-compatibility of a recently developed opto-electrokinetic manipulation technique, using microorganisms. Aggregation, patterning, translation, trapping and size-based separation of microorganisms performed with the technique firmly establishes its usefulness for development of a high-performance on-chip bioassay system.

Kwon, Jae-Sung [Purdue University; Ravindranath, Sandeep [Purdue University; Kumar, Aloke [ORNL; Irudayaraj, Joseph [Purdue University; Wereley, Steven T. [Purdue University

2012-01-01T23:59:59.000Z

463

Chemical and nuclear properties of lawrencium (element 103) and hahnium (element 105)  

SciTech Connect (OSTI)

The chemical and nuclear properties of Lr and Ha have been studied, using 3-minute {sup 260}Lr and 35-second {sup 262}Ha. The crystal ionic radius of Lr{sup 3+} was determined by comparing its elution position from a cation-exchange resin column with those of lanthanide elements having known ionic radii. Comparisons are made to the ionic radii of the heavy actinides, Am{sup 3+} through Es{sup 3+}, obtained by x-ray diffraction methods, and to Md{sup 3+} and Fm{sup 3+} which were determined in the same manner as Lr{sup 3+}. The hydration enthalpy of {minus}3622 kJ/mol was calculated from the crystal ionic radius using an empirical form of the Born equation. Comparisons to the spacings between the ionic radii of the heaviest members of the lanthanide series show that the 2Z spacing between Lr{sup 3+} and Md{sup 3+} is anomalously small, as the ionic radius of Lr{sup 3+} of 0.0886 nm is significantly smaller than had been expected. The chemical properties of Ha were determined relative to the lighter homologs in group 5, Nb and Ta. Group 4 and group 5 tracer activities, as well as Ha, were absorbed onto glass surfaces as a first step toward the determination of the chemical properties of Ha. Ha was found to adsorb on surfaces, a chemical property unique to the group 5 elements, and as such demonstrates that Ha has the chemical properties of a group 5 element. A solvent extraction procedure was adapted for use as a micro-scale chemical procedure to examine whether or not Ha displays eka-Ta-like chemical under conditions where Ta will be extracted into the organic phase and Nb will not. Under the conditions of this experiment Ha did not extract, and does not show eka-Ta-like chemical properties.

Henderson, R.A.

1990-09-10T23:59:59.000Z

464

Multicriteria Choice of the NVG Optoelectronic Channel Elements Daniela Borissova  

E-Print Network [OSTI]

6 1 Multicriteria Choice of the NVG Optoelectronic Channel Elements Daniela Borissova Institute of technological development and mass production. The process of the NVG design involves choice of optoelectronic elements must fulfill specific requirements of the NVG optoelectronic channel and it has to meet user

Borissova, Daniela

465

Single element changes in electrical networks Thomas Berger,  

E-Print Network [OSTI]

University of Technology Page 2 / 13 #12;Example: electrical RLC network Z(s)i(s) = vs(s), Z(s) = s-1 1 C1Single element changes in electrical networks Thomas Berger, George Halikias and Nicos Karcanias, 2012 Single element changes in electrical networks Thomas Berger, George Halikias and Nicos Karcanias

Knobloch,Jürgen

466

Single element changes in electrical networks Thomas Berger,  

E-Print Network [OSTI]

, Ilmenau University of Technology Page 2 / 13 #12;Example: electrical RLC network Z(s)i(s) = vs(s), ZSingle element changes in electrical networks Thomas Berger, George Halikias and Nicos Karcanias, February 23, 2012 Single element changes in electrical networks Thomas Berger, George Halikias and Nicos

Knobloch,Jürgen

467

Nuclear breeder reactor fuel element with silicon carbide getter  

DOE Patents [OSTI]

An improved cesium getter 28 is provided in a breeder reactor fuel element or pin in the form of an extended surface area, low density element formed in one embodiment as a helically wound foil 30 located with silicon carbide, and located at the upper end of the fertile material upper blanket 20.

Christiansen, David W. (Kennewick, WA); Karnesky, Richard A. (Richland, WA)

1987-01-01T23:59:59.000Z

468

Curved finite elements by the method of initial strains  

E-Print Network [OSTI]

, pp. 383-432. 2. Clough, R. W. , "Comparison of Three Dimensional Finite Elements, " Proceedin s of the S osium on A lication of Finite Element Mhd l. t''i~Et f, Vd6'ltUt ty, 1969, pp. 1-26. 3. Stricklin, J. A. , informal proposal submitted to Dr...

Leick, Roger Dale

1974-01-01T23:59:59.000Z

469

A Novel Membrane Finite Element with Drilling Rotations  

E-Print Network [OSTI]

A Novel Membrane Finite Element with Drilling Rotations Reijo Kouhia 1 Abstract. A new low order interpolation is used for the drill rotation #12;eld. Both triangular and quadrilateral elements are considered of freedom. 1 INTRODUCTION In-plane rotational degrees of freedom, \\drilling de- grees of freedom

Kouhia, Reijo

470

Oxidation and methylation of dissolved elemental mercury by anaerobic bacteria  

SciTech Connect (OSTI)

Methylmercury is a neurotoxin that poses significant health risks to humans. Some anaerobic sulphate- and iron-reducing bacteria can methylate oxidized forms of mercury, generating methylmercury1-4. One strain of sulphate-reducing bacteria (Desulfovibrio desulfuricans ND132) can also methylate elemental mercury5. The prevalence of this trait among different bacterial strains and species remains unclear, however. Here, we compare the ability of two strains of the sulphate-reducing bacterium Desulfovibrio and one strain of the iron-reducing bacterium Geobacter to oxidise and methylate elemental mercury in a series of laboratory incubations. Experiments were carried out under dark, anaerobic conditions, in the presence of environmentally-relevant concentrations of elemental mercury. We report differences in the ability of these organisms to oxidise and methylate elemental mercury. In line with recent findings5, we show that Desulfovibrio desulfuricans ND132 can both oxidise and methylate elemental mercury. However, the rate of methylation of elemental mercury is only about one third the rate of methylation of oxidized mercury. We also show that Desulfovibrio alaskensis G20 can oxidise, but not methylate, elemental mercury. Geobacter sulfurreducens PCA is able to oxidise and methylate elemental mercury in the presence of cysteine. We suggest that the activity of methylating and non-methylating bacteria may together enhance the formation of methylmercury in anaerobic environments.

Hu, Haiyan [ORNL] [ORNL; Lin, Hui [ORNL] [ORNL; Zheng, Wang [ORNL] [ORNL; Tomanicek, Stephen J [ORNL] [ORNL; Johs, Alexander [ORNL] [ORNL; Feng, Xinbin [ORNL] [ORNL; Elias, Dwayne A [ORNL] [ORNL; Liang, Liyuan [ORNL] [ORNL; Liang, Liyuan [ORNL] [ORNL; Gu, Baohua [ORNL] [ORNL

2013-01-01T23:59:59.000Z

471

Constraints of mixing matrix elements in the sequential fourthgeneration model  

E-Print Network [OSTI]

We review our works on the sequential fourth generation model and focus on the constriants of $4\\times 4$ quark mixing matrix elements. We investigate the quark mixing matrix elements from the rare $K,B$ meson decays. We talk about the $ hierarchy$ of the $4\\times 4$ matrix and the existence of fourth generation.

W. J. Huo

2002-03-23T23:59:59.000Z

472

The Use and Usefulness of the Cybersecurity Data Element  

E-Print Network [OSTI]

for Strategic Workforce Planning #12;· The OPM cybersecurity data elements were published in the Guide their cybersecurity professionals The OPM Data element will: #12;Workforce Planning Succession Management Interlocking Collect and Operate (3) 31 Collection Operations 32 Cyber Operations 33 Cyber Operations Planning 40

473

Mobile monolithic polymer elements for flow control in microfluidic devices  

DOE Patents [OSTI]

A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by fluid pressure (either liquid or gas) against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

Hasselbrink, Jr., Ernest F. (Saline, MI); Rehm, Jason E. (Alameda, CA); Shepodd, Timothy J. (Livermore, CA); Kirby, Brian J. (San Francisco, CA)

2005-11-11T23:59:59.000Z

474

Mobile Monolith Polymer Elements For Flow Control In Microfluidic Systems  

DOE Patents [OSTI]

A cast-in-place and lithographically shaped mobile, monolithic polymer element for fluid flow control in microfluidic devices and method of manufacture. Microfluid flow control devices, or microvalves that provide for control of fluid or ionic current flow can be made incorporating a cast-in-place, mobile monolithic polymer element, disposed within a microchannel, and driven by fluid pressure (either liquid or gas) against a retaining or sealing surface. The polymer elements are made by the application of lithographic methods to monomer mixtures formulated in such a way that the polymer will not bond to microchannel walls. The polymer elements can seal against pressures greater than 5000 psi, and have a response time on the order of milliseconds. By the use of energetic radiation it is possible to depolymerize selected regions of the polymer element to form shapes that cannot be produced by conventional lithographic patterning and would be impossible to machine.

Hasselbrink, Jr., Ernest F. (Saline, MI); Rehm, Jason E. (Alameda, CA); Shepodd, Timothy J. (Livermore, CA); Kirby, Brian J. (San Francisco, CA)

2006-01-24T23:59:59.000Z

475

Oxygen is a key element for biology and the cycling of geochemical elements, and has shaped the chemical  

E-Print Network [OSTI]

Oxygen is a key element for biology and the cycling of geochemical elements, and has shaped the chemical and biological evolution of Earth. The oceans appear to be loosing oxygen due to on-going climate change, with resulting impacts on marine ecosystems and global biogeochemical cycles. As oxygen levels

Handy, Todd C.

476

Superhydrophobic Materials Technology-PVC Bonding Techniques  

SciTech Connect (OSTI)

The purpose of the technology maturation project was to develop an enhanced application technique for applying diatomaceous earth with pinned polysiloxane oil to PVC pipes and materials. The oil infiltration technique is applied as a spray of diluted oil in a solvent onto the superhydrophobic diatomaceous earth substrate. This makes the surface take on the following characteristics: • wet?cleanable • anti?biofouling • waterproof • anti?corrosion. The project involved obtaining input and supplies from VeloxFlow and the development of successful techniques that would quickly result in a commercial license agreement with VeloxFlow and other companies that use PVC materials in a variety of other fields of use.

Hunter, Scott R. [Oak Ridge National Laboratory; Efird, Marty [VeloxFlow, LLC

2013-05-03T23:59:59.000Z

477

Scattering by coupled resonating elements in air  

E-Print Network [OSTI]

Scattering by (a) a single composite scatterer consisting of a concentric arrangement of an outer N-slit rigid cylinder and an inner cylinder which is either rigid or in the form of a thin elastic shell and (b) by a finite periodic array of these scatterers in air has been investigated analytically and through laboratory experiments. The composite scatterer forms a system of coupled resonators and gives rise to multiple low frequency resonances. The corresponding analytical model employs polar angle dependent boundary conditions on the surface of the N-slit cylinder. The solution inside the slits assumes plane waves. It is shown also that in the low-frequency range the N-slit rigid cylinder can be replaced by an equivalent fluid layer. Further approximations suggest a simple square root dependence of the resonant frequencies on the number of slits and this is confirmed by data. The observed resonant phenomena are associated with Helmholtz-like behaviour of the resonator for which the radius and width of the openings are much smaller than the wavelength. The problem of scattering by a finite periodic array of such coupled resonators in air is solved using multiple scattering techniques. The resulting model predicts band-gap effects resulting from the resonances of the individual composite scatterers below the first Bragg frequency . Predictions and data confirm that use of coupled resonators results in substantial insertion loss peaks related to the resonances within the concentric configuration. In addition, for both scattering problems experimental data, predictions of the analytical approach and predictions of the equivalent fluid layer approximations are compared in the low-frequency interval.

Anton Krynkin; Olga Umnova; Alvin Y. B. Chong; Shahram Taherzadeh; Keith Attenborough

2011-01-12T23:59:59.000Z

478

Compound and Elemental Analysis At Valley Of Ten Thousand Smokes...  

Open Energy Info (EERE)

analytical techniques employed included instrumental neutron activation analysis (INAA), atomic absorption spectroscopy (AAS), direct-current plasma atomic emission spectroscopy...

479

274 CEREAL CHEMISTRY ANALYTICAL TECHNIQUES AND INSTRUMENTATION  

E-Print Network [OSTI]

274 CEREAL CHEMISTRY ANALYTICAL TECHNIQUES AND INSTRUMENTATION Evaluation of the Displacement Value). Production of fuel-grade ethanol, initiated in the late 1970's as a result of rising gasoline prices

480

Review of Building Energy Saving Techniques  

E-Print Network [OSTI]

The pace of building energy saving in our country is late, compared with developed countries, and the consumption of building energy is much higher. Therefore, it is imperative to open up new building energy saving techniques and heighten energy use...

Zeng, X.; Zhu, D.

2006-01-01T23:59:59.000Z

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


481

Internal Benchmarking Outreach and Data Collection Techniques  

Broader source: Energy.gov [DOE]

U.S. Department of Energy (DOE) Technical Assistance Program (TAP) presentation at a TAP webinar held on April 11, 2013 and dealing with internal benchmarking outreach and data collection techniques.

482

Continuous flow separation techniques for microchemical synthesis  

E-Print Network [OSTI]

Performing multistep microchemical synthesis requires many techniques from combining micromixers in series to the development of continuous microfluidic separation tools. Safety, high heat and mass transfer rates, and cost ...

Kralj, Jason G

2006-01-01T23:59:59.000Z

483

A laser speckle based position sensing technique  

E-Print Network [OSTI]

This thesis presents the design and development of a novel laser-speckle-based position sensing technique. In our prototype implementation, a He-Ne laser beam is directed at the surface of an air-bearing spindle. An imaging ...

Shilpiekandula, Vijay, 1979-

2004-01-01T23:59:59.000Z

484

Laser technique detects pollutants in fish  

SciTech Connect (OSTI)

Using a laser and a mass spectrometer, trace pollutants can be detected in fish scales and the time and place of exposure can be determined. The technique has been demonstrated using striped bass from the Clinch and Tennessee rivers.

Krause, C.

1992-01-01T23:59:59.000Z

485

Techniques for green radio cellular communications   

E-Print Network [OSTI]

This thesis proposes four novel techniques to solve the problem of growing energy consumption requirements in cellular communication networks. The first and second part of this work propose a novel energy efficient ...

Videv, Stefan

2013-07-01T23:59:59.000Z

486

ECG Feature Extraction Techniques - A Survey Approach  

E-Print Network [OSTI]

ECG Feature Extraction plays a significant role in diagnosing most of the cardiac diseases. One cardiac cycle in an ECG signal consists of the P-QRS-T waves. This feature extraction scheme determines the amplitudes and intervals in the ECG signal for subsequent analysis. The amplitudes and intervals value of P-QRS-T segment determines the functioning of heart of every human. Recently, numerous research and techniques have been developed for analyzing the ECG signal. The proposed schemes were mostly based on Fuzzy Logic Methods, Artificial Neural Networks (ANN), Genetic Algorithm (GA), Support Vector Machines (SVM), and other Signal Analysis techniques. All these techniques and algorithms have their advantages and limitations. This proposed paper discusses various techniques and transformations proposed earlier in literature for extracting feature from an ECG signal. In addition this paper also provides a comparative study of various methods proposed by researchers in extracting the feature from ECG signal.

Karpagachelvi, S; Sivakumar, M

2010-01-01T23:59:59.000Z

487

The HIT method: A hazard identification technique  

SciTech Connect (OSTI)

This report explains a technique for analyzing systems and operations to identify hazards and needed controls. The HIT method can be used both as a design tool and as a risk analysis tool. As a design tool, this method identifies requirements for design criteria. As part of a risk analysis effort, HIT identifies potential accident sequences that can become part of the safety analysis documentation. Within this report the HIT method is described in detail with emphasis on application of the technique.

Howard, H.H.; Faust, C.L.

1990-01-01T23:59:59.000Z

488

Data Capture Technique for High Speed Signaling  

DOE Patents [OSTI]

A data capture technique for high speed signaling to allow for optimal sampling of an asynchronous data stream. This technique allows for extremely high data rates and does not require that a clock be sent with the data as is done in source synchronous systems. The present invention also provides a hardware mechanism for automatically adjusting transmission delays for optimal two-bit simultaneous bi-directional (SiBiDi) signaling.

Barrett, Wayne Melvin (Rochester, MN); Chen, Dong (Croton On Hudson, NY); Coteus, Paul William (Yorktwon Heights, NY); Gara, Alan Gene (Mount Kisco, NY); Jackson, Rory (Eastchester, NY); Kopcsay, Gerard Vincent (Yorktown Hieghts, NY); Nathanson, Ben Jesse (Teaneck, NY); Vranas, Paylos Michael (Bedford Hills, NY); Takken, Todd E. (Brewster, NY)

2008-08-26T23:59:59.000Z

489

Cascade Training Technique for Particle Identification  

E-Print Network [OSTI]

The cascade training technique which was developed during our work on the MiniBooNE particle identification has been found to be a very efficient way to improve the selection performance, especially when very low background contamination levels are desired. The detailed description of this technique is presented here based on the MiniBooNE detector Monte Carlo simulations, using both artifical neural networks and boosted decision trees as examples.

Yong Liu; Ion Stancu

2006-11-27T23:59:59.000Z

490

Lidar techniques for search and rescue  

SciTech Connect (OSTI)

Four techniques for using LIDAR in Search and Rescue Operations will be discussed. The topic will include laser retroreflection, laser-induced fluorescence in the visible, laser-induced fluorescence during daylight hours, and laser-induced fluorescence in the uv. These techniques use high-repetition rate lasers at a variety of frequencies to induce either fluorescence in dye markers or retroreflection from plastic corner cubes on life preservers and other emergency markers.

Cabral, W.L.

1985-01-01T23:59:59.000Z

491

Passive magnetic bearing element with minimal power losses  

DOE Patents [OSTI]

Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elements disclosed in US Patent No. 5,495,221 entitled ``Dynamically Stable Magnetic Suspension/Bearing System.`` The improvements relate to increasing the magnitude of the force derivative, while at the same time reducing the power dissipated during the normal operation of the bearing system, to provide a passive bearing system that has virtually no losses under equilibrium conditions, that is, when the supported system is not subject to any accelerations except those of gravity. 8 figs.

Post, R.F.

1998-12-08T23:59:59.000Z

492

Passive magnetic bearing element with minimal power losses  

DOE Patents [OSTI]

Systems employing passive magnetic bearing elements having minimal power losses are provided. Improved stabilizing elements are shown, employing periodic magnet arrays and inductively loaded circuits, but with improved characteristics compared to the elements disclosed in U.S. Patent No. 5,495,221 entitled "Dynamically Stable Magnetic Suspension/Bearing System." The improvements relate to increasing the magnitude of the force derivative, while at the same time reducing the power dissipated during the normal operation of the bearing system, to provide a passive bearing system that has virtually no losses under equilibrium conditions, that is, when the supported system is not subject to any accelerations except those of gravity.

Post, Richard F. (Walnut Creek, CA)

1998-01-01T23:59:59.000Z

493

Materials/manufacturing element of the Advanced Turbine System Program  

SciTech Connect (OSTI)

One of the supporting elements of the Advanced Turbine Systems (ATS) Program is the materials/manufacturing technologies task. The objective of this element is to address critical materials issues for both industrial and utility gas turbines. DOE Oak Ridge Operations Office (ORO) will manage this element of the program, and a team from DOE-ORO and Oak Ridge National Laboratory is coordinating the planning for the materials/manufacturing effort. This paper describes that planning activity which is in the early stages.

Karnitz, M.A.; Devan, J.H.; Holcomb, R.S.; Ferber, M.K.; Harrison, R.W.

1994-08-01T23:59:59.000Z

494

Quantification of Dopant Concentrations in Diluted Magnetic Semiconductors using Ion Beam Techniques  

SciTech Connect (OSTI)

It has recently been demonstrated that magnetically doped TiO2 and SnO2 show ferromagnetism at room-temperature and Curie temperatures above room temperature. However, accurate knowledge of dopant concentrations is necessary to quantify magnetic moments in these materials. Rutherford Backscattering spectrometry (RBS) is one of the powerful techniques to quantify magnetic transition metal dopant concentrations in these materials. However, in some cases, the interference of RBS signals for different dopants and substrate elements in these materials makes analysis difficult. In this work, we demonstrate that particle induced x-ray emission (PIXE) can be successfully used to quantify the magnetic transition element dopants in several room temperature ferromagnetic materials synthesized using three different synthesis methods: oxygen plasma assisted molecular beam epitaxy, ion implantation and wet chemical methods.

Shutthanandan, V.; Thevuthasan, Suntharampillai; Droubay, Timothy C.; Kaspar, Tiffany C.; Punnoose, Alex; Hays, Jason; Chambers, Scott A.

2006-08-01T23:59:59.000Z

495

Monte Carlo techniques applied to PERT networks  

E-Print Network [OSTI]

conceived by Booze, Allen and Hamilton. Tnis concept was replaced by the three estimate concept during the Polaris Submarine Project when it was found that. the one estimate concept did not provide accurate solutions. However, in certain cases where union... on its way to more profitable adaptations. The PERT system is essentially an outgrowth of the Gantt or bar 6 chart concept of controlling time elements in a program. I+ was first formalized in 1956 by the management consultant firm of Booze, Allen...

McGowan, Lawrence Lee

1964-01-01T23:59:59.000Z

496

Status of Baseline Sampling for Elements in Soil and Vegetation...  

Open Energy Info (EERE)

Sampling for Elements in Soil and Vegetation at Four Kgra's in the Imperial Valley, California Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

497

APPROXIMATE HARTREE TYPE WAVE FUNCTIONS AND MATRIX ELEMENTS FOR...  

Office of Scientific and Technical Information (OSTI)

APPROXIMATE HARTREE TYPE WAVE FUNCTIONS AND MATRIX ELEMENTS FOR THE K AND L SHELLS OF ATOMS AND IONS Re-direct Destination: Temp Data Fields Meyerott, R.E. Temp Data Storage 3:...

498

2-D discrete element modeling of unconsolidated sandstones  

E-Print Network [OSTI]

developed in this thesis is compared to the results of triaxial tests performed in cylindrical core samples of unconsolidated sandstones saturated with heavy oil. The discrete element model treats the sand as a two dimensional assembly of particles...

Franquet Barbara, Javier Alejandro

2012-06-07T23:59:59.000Z

499

Transactions of NAMRI/SME FINITE ELEMENT SIMULATION OF  

E-Print Network [OSTI]

Transactions of NAMRI/SME FINITE ELEMENT SIMULATION OF Ti-6Al-4V ALLOY Turul Manufacturing #12;Transactions of NAMRI/SME 50 Volume 38, 2010 excessive heat generation. Usually above 120 m

Ozel, Tugrul

500

Dynamic control of spin states in interacting magnetic elements  

DOE Patents [OSTI]

A method for the control of the magnetic states of interacting magnetic elements comprising providing a magnetic structure with a plurality of interacting magnetic elements. The magnetic structure comprises a plurality of magnetic states based on the state of each interacting magnetic element. The desired magnetic state of the magnetic structure is determined. The active resonance frequency and amplitude curve of the desired magnetic state is determined. Each magnetic element of the magnetic structure is then subjected to an alternating magnetic field or electrical current having a frequency and amplitude below the active resonance frequency and amplitude curve of said desired magnetic state and above the active resonance frequency and amplitude curve of the current state of the magnetic structure until the magnetic state of the magnetic structure is at the desired magnetic state.

Jain, Shikha; Novosad, Valentyn

2014-10-07T23:59:59.000Z