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1

Hall viscosity to entropy ratio in higher derivative theories  

E-Print Network [OSTI]

In this paper based on the basic principles of gauge/gravity duality we compute the hall viscosity to entropy ratio in the presence of various higher derivative corrections to the dual gravitational description embedded in an asymptotically $ AdS_{4} $ space time. As the first step of our analysis, considering the back reaction we impose higher derivative corrections to the abelian gauge sector of the theory where we notice that the ratio indeed gets corrected at the leading order in the coupling. Considering the probe limit as a special case we compute this leading order correction over the fixed background of the charged black brane solution. Finally we consider higher derivative ($ R^{2} $) correction to the gravity sector of the theory where we notice that the above ratio might get corrected at the sixth derivative level.

Dibakar Roychowdhury

2014-08-21T23:59:59.000Z

2

The impedance problem of wave diffraction by a strip with higher order boundary conditions  

SciTech Connect (OSTI)

This work is devoted to analyse an impedance boundary-transmission problem for the Helmholtz equation originated by a problem of wave diffraction by an infinite strip with higher order imperfect boundary conditions. A constructive approach of operator relations is built, which allows a transparent interpretation of the problem in an operator theory framework. In particular, different types of operator relations are exhibited for different types of operators acting between Lebesgue and Sobolev spaces on a finite interval and the positive half-line. All this has consequences in the understanding of the structure of this type of problems. In particular, a Fredholm characterization of the problem is obtained in terms of the initial space order parameters. At the request of the author and the Proceedings Editor the above article has been replaced with a corrected version. The original PDF file supplied to AIP Publishing contained an error in the title of the article. The original title appeared as: 'The Impedance Problem of Wave Diffraction by a trip with Higher Order Boundary Conditions.' This article has been replaced and the title now appears correctly online. The corrected article was published on 8 November 2013.

Castro, L. P. [Center for Research and Development in Mathematics and Applications (CIDMA) and Department of Mathematics of University of Aveiro, 3810-193 Aveiro (Portugal); Simões, A. M. [Center for Research and Development in Mathematics and Applications (CIDMA) and Department of Mathematics of University of Beira Interior, 6200-001 Covilhã (Portugal)

2013-10-17T23:59:59.000Z

3

Ratio of absorption cross section for Dirac fermion to that for scalar in the higher-dimensional black hole background  

E-Print Network [OSTI]

The ratio of the low-energy absorption cross section for Dirac fermion to that for minimally coupled scalar is computed when the spacetimes are various types of the higher-dimensional Reissner-Nordstr\\"{o}m black holes. It is found that the low-energy absorption cross sections for the Dirac fermion always goes to zero in the extremal limit regardless of the detailed geometry of the spacetime. The physical importance of our results is discussed in the context of the brane-world scenarios and string theories.

Eylee Jung; SungHoon Kim; D. K. Park

2005-03-03T23:59:59.000Z

4

Higher Spin String States Scattered from D-Particle in the Regge Regime and Factorized Ratios of Fixed Angle Scatterings  

Science Journals Connector (OSTI)

......D are not affected by the replacement of eP with eL if we take the limit b0 after taking the Regge limit. Therefore we pro- ceed as in the previous works on Regge scattering. The calculation for the complete ratios of leading (in b0) RR closed string......

Jen-Chi Lee; Yoshihiro Mitsuka; Yi Yang

2011-09-01T23:59:59.000Z

5

Ram Pressure Stripping in Clusters and Groups  

E-Print Network [OSTI]

Ram pressure stripping is an important process in the evolution of both dwarf galaxies and large spirals. Large spirals are severely stripped in rich clusters and may be mildly stripped in groups. Dwarf galaxies can be severely stripped in both clusters and groups. A model is developed that describes the stripping of a satellite galaxy's outer H \\textsc{i} disk and hot galactic halo. The model can be applied to a wide range of environments and satellite galaxy masses. Whether ram pressure stripping of the outer disk or hot galactic halo occurs is found to depend primarily on the ratio of the satellite galaxy mass to the mass of the host group or cluster. How the effectiveness of ram pressure stripping depends on the density of the inter-group gas, the dark matter halo concentrations, and the scale lengths and masses of the satellite components is explored. The predictions of the model are shown to be well matched to H \\textsc{i} observations of spirals in a sample of nearby clusters. The model is used to predict the range of H \\textsc{i} gas fractions a satellite of mass $M_{v,sat}$ can lose orbiting in a cluster of mass $M_{v,gr}$.

J. A. Hester

2006-10-03T23:59:59.000Z

6

Strip Mine Law (Missouri)  

Broader source: Energy.gov [DOE]

This law authorizes the Land Reclamation Commission of the Department of Natural Resources to adopt and promulgate rules and regulations pertaining to strip mining of coal and reclamation, review...

7

Geometrical deuteron stripping revisited  

SciTech Connect (OSTI)

We investigate the reality of the idea of geometrical deuteron stripping originally envisioned by Serber. By taking into account of realistic deuteron wavefunction, nuclear density, and nucleon stopping mean free path, we are able to estimate inclusive deuteron stripping cross section for deuteron energy up to before pion production. Our semiclassical model contains only one global parameter constant for all nuclei which can be approximated by Woods-Saxon or any other spherically symmetric density distribution.

Neoh, Y. S.; Yap, S. L. [Plasma Research Technology Center, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2014-03-05T23:59:59.000Z

8

Removing a small quantity of THT from gas storage groundwater through air stripping and gas-phase carbon adsorption  

SciTech Connect (OSTI)

This paper deals with the response to a case of contaminated groundwater located in France. The natural gas is stored during summer in porous underground rocks. When energy requirements increase (particularly in winter), gas is drawn off, but water is also pumped during this operation. The water has a strong characteristic odour of the TetraHydroThiophene (THT), which has been used by Gaz de France as an additive in order to detect gas leakages because of its strong odour. Unfortunately, the presence of THT in medium other than natural gas can be responsible for safety problems. Gas stripping combined with adsorption on granular activated carbon was chosen to obtain removal of THT from the groundwater. The gas to water ratio for stripping column is higher than usual and the gas used for stripping was recycled in order to prevent air pollution. Carbon consumption is approximately 3 tons a year. 8 refs., 5 figs., 2 tabs.

Girod, J.F.; Leclerc, J.P.; Muhr, H. [CNRS, Nancy (France)] [and others

1996-12-31T23:59:59.000Z

9

Noise analysis due to strip resistance in the ATLAS SCT silicon strip module  

SciTech Connect (OSTI)

The module is made out of four 6 cm x 6 cm single sided Si microstrip detectors. Two detectors are butt glued to form a 12 cm long mechanical unit and strips of the two detectors are electrically connected to form 12 cm long strips. The butt gluing is followed by a back to back attachment. The module in this note is the R{phi} module where the electronics is oriented parallel to the strip direction and bonded directly to the strips. This module concept provides the maximum signal-to-noise ratio, particularly when the front-end electronics is placed near the middle rather than at the end. From the noise analysis, it is concluded that the worst-case {Delta}ENC (far-end injection) between end- and center-tapped modules will be 120 to 210 el. rms (9 to 15%) for a non-irradiated detector and 75 to 130 el. rms (5 to 9%) for an irradiated detector, for a metal strip resistance of 10 to 20 {Omega}/cm.

Kipnis, I.

1996-08-01T23:59:59.000Z

10

Spray Rolling Aluminum Strip  

SciTech Connect (OSTI)

Spray forming is a competitive low-cost alternative to ingot metallurgy for manufacturing ferrous and non-ferrous alloy shapes. It produces materials with a reduced number of processing steps, while maintaining materials properties, with the possibility of near-net-shape manufacturing. However, there are several hurdles to large-scale commercial adoption of spray forming: 1) ensuring strip is consistently flat, 2) eliminating porosity, particularly at the deposit/substrate interface, and 3) improving material yield. Through this program, a new strip/sheet casting process, termed spray rolling, has been developed, which is an innovative manufacturing technique to produce aluminum net-shape products. Spray rolling combines the benefits of twin-roll casting and conventional spray forming, showing a promising potential to overcome the above hurdles associated with spray forming. Spray rolling requires less energy and generates less scrap than conventional processes and, consequently, enables the development of materials with lower environmental impacts in both processing and final products. Spray Rolling was developed as a collaborative project between the University of California-Davis, the Colorado School of Mines, the Idaho National Engineering and Environmental Laboratory, and an industry team. The following objectives of this project were achieved: (1) Demonstration of the feasibility of the spray rolling process at the bench-scale level and evaluation of the materials properties of spray rolled aluminum strip alloys; and (2) Demonstration of 2X scalability of the process and documentation of technical hurdles to further scale up and initiate technology transfer to industry for eventual commercialization of the process.

Lavernia, E.J.; Delplanque, J-P; McHugh, K.M.

2006-05-10T23:59:59.000Z

11

Strip casting apparatus and method  

DOE Patents [OSTI]

Strip casting apparatus including a molten-metal-holding container and a nozzle to deposit molten metal onto a moving chill drum to directly cast continuous metallic strip. The nozzle body includes a slot bounded between a back and a front lip. The slot width exceeds about 20 times the gap distance between the nozzle and the chill drum surface. Preferably, the slot width exceeds 0.5 inch. This method of strip casting minimizes pressure drop, insuring better metal-to-chill-drum contact which promotes heat transfer and results in a better quality metallic strip. 6 figs.

Williams, R.S.; Baker, D.F.

1988-09-20T23:59:59.000Z

12

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping  

Science Journals Connector (OSTI)

Integrated Gasification Combined Cycle Dynamic Model: H2S Absorption/Stripping, Water?Gas Shift Reactors, and CO2 Absorption/Stripping ... Future chemical plants may be required to have much higher flexibility and agility than existing process facilities in order to be able to handle new hybrid combinations of power and chemical units. ...

Patrick J. Robinson; William L. Luyben

2010-04-26T23:59:59.000Z

13

Strip Mining: Congress Moves toward "Tough" Regulation  

Science Journals Connector (OSTI)

...decades the strip mining of coal has blighted...mountains of Appalachia. Many states...regard strip mining as a scourge...than it is in Appalachia, the west-erners...near-surface coal deposits are exploited 513 Strip Mining: Congress Moves...

Luther J. Carter

1974-08-09T23:59:59.000Z

14

Characterization of radiolytically generated degradation products in the strip section of a TRUEX flowsheet  

SciTech Connect (OSTI)

This report presents a summary of the work performed to meet the FCRD level 2 milestone M3FT-13IN0302053, “Identification of TRUEX Strip Degradation.” The INL radiolysis test loop has been used to identify radiolytically generated degradation products in the strip section of the TRUEX flowsheet. These data were used to evaluate impact of the formation of radiolytic degradation products in the strip section upon the efficacy of the TRUEX flowsheet for the recovery of trivalent actinides and lanthanides from acidic solution. The nominal composition of the TRUEX solvent used in this study is 0.2 M CMPO and 1.4 M TBP dissolved in n-dodecane and the nominal composition of the TRUEX strip solution is 1.5 M lactic acid and 0.050 M diethylenetriaminepentaacetic acid. Gamma irradiation of a mixture of TRUEX process solvent and stripping solution in the test loop does not adversely impact flowsheet performance as measured by stripping americium ratios. The observed increase in americium stripping distribution ratios with increasing absorbed dose indicates the radiolytic production of organic soluble degradation compounds.

Dean R. Peterman; Lonnie G. Olson; Gary S. Groenewold; Rocklan G. McDowell; Richard D. Tillotson; Jack D. Law

2013-08-01T23:59:59.000Z

15

Adsorptive Stripping Voltammetric Measurements of Trace Uranium...  

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

Measurements of Trace Uranium at the Bismuth Film Electrode. Abstract: Bismuth-coated carbon-fiber electrodes have been successfully applied for adsorptive-stripping...

16

Metal nano-strip optical resonators  

Science Journals Connector (OSTI)

Rectangular gold and silver nano-strips embedded in glass or water are considered as optical resonators. Their scattering cross section and field enhancements in the case of...

Søndergaard, Thomas; Bozhevolnyi, Sergey I

2007-01-01T23:59:59.000Z

17

Comparative Evaluation of a New Commercial Colorimetric Microdilution Assay (SensiQuattro Candida EU) With MIC Test Strip and EUCAST Broth Microdilution for Susceptibility Testing of Invasive Candida Isolates  

Science Journals Connector (OSTI)

...Assay (SensiQuattro Candida EU) With MIC Test Strip and EUCAST Broth Microdilution for...susceptibility testing to that of Liofilchem's MIC Test Strip and the EUCAST reference broth microdilution...Compared to the SensiQuattro panel, the MIC Test Strip exhibited a higher level of agreement...

Hedda Luise Koehling; Birgit Willinger; Jan Buer; Peter-Michael Rath; Joerg Steinmann

2014-11-12T23:59:59.000Z

18

Strip Mining (II): TVA in Middle in Reclamation Controversy  

Science Journals Connector (OSTI)

...sponsored by the coal industry, Robert...the Appalachian coal fields." Opponents of strip mining will con-tinue...to write. The Appalachia Act, which has...economics of strip mining-particularly...Ap-praisal of Coal Strip Mining...

John Walsh

1965-10-08T23:59:59.000Z

19

Reference Buildings by Building Type: Strip mall | Department...  

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

Strip mall Reference Buildings by Building Type: Strip mall In addition to the ZIP file for each building type, you can directly view the "scorecard" spreadsheet that summarizes...

20

Möbius Graphene Strip as Topological Insulator  

E-Print Network [OSTI]

We study the electronic properties of M\\"{o}bius graphene strip with a zigzag edge. We show that such graphene strip behaves as a topological insulator with a gapped bulk and a robust metallic surface, which enjoys some features due to its nontrivial topology of the spatial configuration, such as the existence of edge states and the non-Abelian induced gauge field. We predict that the topological properties of the M\\"{o}bius graphene strip can be experimentally displayed by the destructive interference in the transmission spectrum, and the robustness of edge states under certain perturbations.

Z. L. Guo; Z. R. Gong; H. Dong; C. P. Sun

2009-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Coplanar strip analysis and component development  

E-Print Network [OSTI]

attractive. Accurate transmission line characterization is needed in order to guarantee accurate designs. The finite difference method along with newly developed absorbing boundary conditions was used to characterize the coplanar strip (CPS) transmission line...

Tilley, Keith Andrew

2012-06-07T23:59:59.000Z

22

Process development of thin strip steel casting  

SciTech Connect (OSTI)

An important new frontier is being opened in steel processing with the emergence of thin strip casting. Casting steel directly to thin strip has enormous benefits in energy savings by potentially eliminating the need for hot reduction in a hot strip mill. This has been the driving force for numerous current research efforts into the direct strip casting of steel. The US Department of Energy initiated a program to evaluate the development of thin strip casting in the steel industry. In earlier phases of this program, planar flow casting on an experimental caster was studied by a team of engineers from Westinghouse Electric corporation and Armco Inc. A subsequent research program was designed as a fundamental and developmental study of both planar and melt overflow casting processes. This study was arranged as several separate and distinct tasks which were often completed by different teams of researchers. An early task was to design and build a water model to study fluid flow through different designs of planar flow casting nozzles. Another important task was mathematically modeling of melt overflow casting process. A mathematical solidification model for the formation of the strip in the melt overflow process was written. A study of the material and conditioning of casting substrates was made on the small wheel caster using the melt overflow casting process. This report discusses work on the development of thin steel casting.

Sussman, R.C.; Williams, R.S.

1990-12-01T23:59:59.000Z

23

Category:StripMall | Open Energy Information  

Open Energy Info (EERE)

StripMall StripMall Jump to: navigation, search Go Back to PV Economics By Building Type Media in category "StripMall" The following 77 files are in this category, out of 77 total. SVStripMall Bismarck ND Montana-Dakota Utilities Co (North Dakota).png SVStripMall Bismarck N... 69 KB SVStripMall International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVStripMall Internatio... 89 KB SVStripMall LA CA City of Los Angeles California (Utility Company).png SVStripMall LA CA City... 89 KB SVStripMall Memphis TN City of Memphis Tennessee (Utility Company).png SVStripMall Memphis TN... 64 KB SVStripMall Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVStripMall Minneapoli... 91 KB SVStripMall Minot ND Montana-Dakota Utilities Co (North Dakota).png

24

Higher Education  

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

Education » Education » Higher Education Higher Education Explore the multiple dimensions of a career at LANL: work with brilliant minds in an inclusive environment rich in intellectual vitality and opportunities for growth. Contact Education Janelle Vigil-Maestas Community Programs Office (505) 665-4329 Email "The partnership between LANL and regional colleges creates opportunities for students like me to attain challenging and rewarding careers." - Sherry Salas Bachicha Higher Education Resources for Undergraduates, Graduates & Postdocs Opportunities LANL Foundation Scholarships LANL Post Doc Program Programs Certificate in Environmental Monitoring (pdf) Community College Institute (CCI) (pdf) Computer Science and Information Technology Pipeline Program (ADIT/HPC Division) (pdf)

25

Determination of Selenium in Nuts by Cathodic Stripping Potentiometry (CSP)  

Science Journals Connector (OSTI)

Determination of Selenium in Nuts by Cathodic Stripping Potentiometry (CSP) ... In this work, cathodic stripping potentiometry (CSP) (14) is used to determine the selenium content of nuts that were studied. ... CSP Analysis. ...

Giacomo Dugo Lara La Pera; Vincenzo Lo Turco; Ekaterini Mavrogeni; Maria Alfa

2003-05-20T23:59:59.000Z

26

Radiation hardness of si strip detectors with integrated coupling capacitors  

SciTech Connect (OSTI)

Si strip detectors with integrated coupling capacitors between diode and metallization and with separate bias resistors for each strip have been exposed to ionising radiation. Results from measurements of detector response before and after irradiation are presented.

Dijkstra, H.; Horisberger, R.; Hubbeling, L.; Maehlum, G.; Peisert, A.; Weilhammer, P.; Tuuva, T.; Evensen, L.

1989-02-01T23:59:59.000Z

27

Surface-integral formalism of deuteron stripping  

E-Print Network [OSTI]

The purpose of this paper is to develop an alternative theory of deuteron stripping to resonance states based on the surface integral formalism of Kadyrov et al. [Ann. Phys. 324, 1516 (2009)] and continuum-discretized coupled channels (CDCC). First we demonstrate how the surface integral formalism works in the three-body model and then we consider a more realistic problem in which a composite structure of target nuclei is taken via optical potentials. We explore different choices of channel wave functions and transition operators and show that a conventional CDCC volume matrix element can be written in terms of a surface-integral matrix element, which is peripheral, and an auxiliary matrix element, which determines the contribution of the nuclear interior over the variable $r_{nA}$. This auxiliary matrix element appears due to the inconsistency in treating of the $n-A$ potential: this potential should be real in the final state to support bound states or resonance scattering and complex in the initial state to describe $n-A$ scattering. Our main result is formulation of the theory of the stripping to resonance states using the prior form of the surface integral formalism and CDCC method. It is demonstrated that the conventional CDCC volume matrix element coincides with the surface matrix element, which converges for the stripping to the resonance state. Also the surface representation (over the variable $r_{nA}$ of the stripping matrix element enhances the peripheral part of the amplitude although the internal contribution doesn't disappear and increases with increase of the deuteron energy. We present calculations corroborating our findings for both stripping to the bound state and the resonance.

A. M. Mukhamedzhanov; D. Y. Pang; C. A. Bertulani; A. S. Kadyrov

2014-08-24T23:59:59.000Z

28

Strip Mining: Kentucky Begins To Close the Reclamation Gap  

Science Journals Connector (OSTI)

...ad-vocated a federal strip-mining law. He is also working...reclamation by strip-mining states. Until recently...in dealing with strip mining. The good offices of...new regulations. The Appalachia Act pro-vides for a...mandatory rec-lamation by coal operators. The im-plications...

John Walsh

1965-10-01T23:59:59.000Z

29

Resolution Studies on Silicon Strip Sensors with fine Pitch  

E-Print Network [OSTI]

In June 2008 single-sided silicon strip sensors with 50 $\\mu$m readout pitch were tested in a highly energetic pion beam at the SPS at CERN. The purpose of the test was to evaluate characteristic detector properties by varying the strip width and the number of intermediate strips. The experimental setup and first results for the spatial resolution are discussed.

S. Haensel; T. Bergauer; Z. Dolezal; M. Dragicevic; Z. Drasal; M. Friedl; J. Hrubec; C. Irmler; W. Kiesenhofer; M. Krammer; P. Kvasnicka

2009-01-30T23:59:59.000Z

30

Macroscopic Distribution of Residual Elements As, S, and P in Steel Strips Produced by Compact Strip Production (CSP) Process  

Science Journals Connector (OSTI)

A novel method has been used successfully to measure the macroscopic distribution of minor arsenic, sulfur, and phosphorous in steel strips produced by the compact strip production (CSP) process. This process inv...

Yuanzhi Zhu; Junchao Li; Jianping Xu

2012-07-01T23:59:59.000Z

31

List of Caulking/Weather-stripping Incentives | Open Energy Information  

Open Energy Info (EERE)

stripping Incentives stripping Incentives Jump to: navigation, search The following contains the list of 289 Caulking/Weather-stripping Incentives. CSV (rows 1 - 289) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP (Central and North) - Residential Energy Efficiency Programs (Texas) Utility Rebate Program Texas Construction Installer/Contractor Multi-Family Residential Building Insulation Caulking/Weather-stripping Comprehensive Measures/Whole Building Custom/Others pending approval Duct/Air sealing Unspecified technologies Yes AEP (SWEPCO) - Residential Energy Efficiency Programs (Texas) Utility Rebate Program Texas Construction Installer/Contractor Multi-Family Residential Building Insulation Caulking/Weather-stripping Comprehensive Measures/Whole Building

32

Perpendicular stripping pays in hilly northern Appalachia  

SciTech Connect (OSTI)

The topography and thin-seam coal reserves in Appalachia have always been conducive to contour mining. In western Pennsylavnia, in fact, even with the growing popularity of mountaintop mining, contour mining is as prevalent as it was many years ago. In the past few years, however, a significant change has occurred in this region in the use of draglines in contour mining. Some operators, such as C and K Coal Co., Clarion, Penn., have begun orienting the dragline cuts perpendicular to the surface contours rather than the traditional approach of stripping parallel to them. Although this change has sometimes been due to necessity, C and K Coal and other operators have found that the advantages of the perpendicular-stripping technique often outweigh the formidable disadvantages normally associated with the technique. The primary disadvantage to be faced is the considerable pre-mining planning necessary in laying out the cuts and the scheduling of supporting equipment.

Chironis, N.

1986-11-01T23:59:59.000Z

33

Superconducting strip in an oblique magnetic field  

Science Journals Connector (OSTI)

As an example for a seemingly simple but actually intricate problem, we study the Bean critical state in a superconducting strip of finite thickness d and width 2w?d placed in an oblique magnetic field. The analytical solution is obtained to leading order in the small parameter d?w. The critical state depends on how the applied magnetic field is switched on, e.g., at a constant tilt angle, or first the perpendicular and then the parallel field component. For these two basic scenarios we obtain the distributions of current density and magnetic field in the critical states. In particular, we find the shapes of the flux-free core and of the lines separating regions with opposite direction of the critical currents, the detailed magnetic field lines (along the vortex lines), and both components of the magnetic moment. The component of the magnetic moment parallel to the strip plane is a nonmonotonic function of the applied magnetic field.

G. P. Mikitik; E. H. Brandt; M. Indenbom

2004-07-30T23:59:59.000Z

34

Effective design for absorption and stripping  

SciTech Connect (OSTI)

Absorption and stripping transfer one or more constituents from a gas stream to a liquid stream (absorption) or from a liquid stream to a gas stream (strippling). Both are widely used in the process industries, for product manufacture and environmental protection alike. They are most often carried out counter currently in packed towers. The aim here is not to reproduce absorption and stripping theory, adequately given elsewhere. Instead, the authors offer practical, often overlooked guidelines and key equations for effective design of packed absorption or stripping towers. The design task consists mainly of two interrelated parts: the hydraulic design and the mass transfer design. Hydraulic design determines the tower diameter; the mass transfer design sets the packed height within the tower. A third basic consideration is the type and size of packing. If these are not given beforehand, the designer should select a packing for which hydraulic and mass-transfer data are available, and which falls in the 1-to-2-in. nominal size range for random packing (which includes over 90% of all applications) or has nominal 1/2-in. crimp height for structured packing.

McNulty, K.J. (Koch Engineering Co., Wilmington, MA (United States))

1994-11-01T23:59:59.000Z

35

Stripped electron collection at the Spallation Neutron Source  

Science Journals Connector (OSTI)

One of the main sources of electrons in the Spallation Neutron Source’s Accumulator Ring is the stripped electrons in the injection region. A magnetic field guides the stripped electrons to the bottom of the beam pipe, where an electron catcher with overhanging surface traps them. This paper describes the stripped electrons’ motion, the optimization of the catcher, and the build up of an electron cloud in this region.

L. Wang; Y. Y. Lee; G. Mahler; W. Meng; D. Raparia; J. Wei; S. Henderson

2005-09-13T23:59:59.000Z

36

Land reclamation and strip-mined coal production in appalachia  

Science Journals Connector (OSTI)

This study quantifies the short-run impacts of reclamation on strip mining costs, coal prices, production, and employment in Appalachia. A process analysis model is developed and used to estimate short-run strip-mined coal supply functions under conditions of alternative reclamation requirements. Then, an econometric model is developed and used to estimate coal demand relations. Our results show that full reclamation has rather minor impacts. In 1972, full reclamation would have increased strip-mined coal production costs an average of $0.35 per ton, reduced strip-mined coal production by 10 million tons, and cost approximately 1600 jobs in Appalachia.

William Lin; Robert L Spore; Edmund A Nephew

1976-01-01T23:59:59.000Z

37

Stripped elliptical galaxies as probes of ICM physics: I. Tails, wakes, and flow patterns in and around stripped ellipticals  

E-Print Network [OSTI]

(abridged) Elliptical cluster galaxies are successively stripped of their gaseous atmospheres due to their motion through the ICM. The stripped galactic gas forms a 'tail' in the galaxy's wake. Deep X-ray observations reveal the fine-structure of the gas tail and of the interface between galactic gas and ICM. This fine-structure depends on dynamic conditions (galaxy potential, initial gas contents, orbit in the host cluster), stripping stage (early infall, pre-/post-pericenter passage), and on the still ill-constrained ICM plasma properties (thermal conductivity, viscosity, magnetic field structure). In a series of papers, we aim at disentangling dynamic and plasma effects in order to use observed stripped ellipticals as probes of the ICM plasma properties. This first paper determines flow phases and flow patterns of successive gas stripping by means of hydrodynamical simulations. During quasi-steady stripping, the flow of ICM around the remnant atmosphere is similar to the flow around solid bodies, including...

Roediger, E; Nulsen, P E J; Forman, W R; Machacek, M; Randall, S; Jones, C; Churazov, E; Kokotanekova, R

2014-01-01T23:59:59.000Z

38

Extractive stripping of inert-rich hydrocarbon gases with a preferential physical solvent  

SciTech Connect (OSTI)

A process is described for treating a natural gas stream containing methane, heavier hydrocarbons, and an inert gas, an improvement comprising: selectivity extracting natural gas liquids from the natural gas stream with a preferential physical solvent which provides selective capability for recovery according to the selected degree of: (a) ethane in amounts ranging from 2-98%, (b) propane in amounts ranging from 2-99%, (c) butanes in amounts ranging from 2-100%, or (d) pentanes and higher molecular weight hydrocarbons in amounts ranging up to 100%, the improvement comprising the following steps: A. selecting the preferential physical solvent which is selective for ethane and heavier hydrocarbon components of the gas stream such that: (1) relative volatility of methane over ethane is at least 5.0 and the hydrocarbon loading capacity, defined as solubility of ethane in the solvent, is at least 0.25 standard cubic feet of ethane per gallon of the solvent, or (2) the preferential factor, determined by the multiplication of relative volatility of methane over ethane by the solubility of ethane in solvent, in standard cubic feet of ethane per gallon of solvent, is at least 1.25; B. selectively extracting and stripping the natural gas stream with the physical solvent to produce an inert gas stream and a rich solvent stream containing methane and the hydrocarbons heavier than methane; and C. distilling the rich solvent stream to produce a stream vent to form a solution having a molar ratio of silicon alkoxide to water in the range of about 1 to about 10.

Mehra, Y.R.

1987-07-14T23:59:59.000Z

39

Detection of Bacteria Using Inkjet-Printed Enzymatic Test Strips  

Science Journals Connector (OSTI)

Detection of Bacteria Using Inkjet-Printed Enzymatic Test Strips ... We report the use of inkjet printing to co-pattern an enzyme-nanoparticle sensor complex and enzymatic substrate on a paper-based test strip for rapid detection of bacteria. ...

Brian Creran; Xiaoning Li; Bradley Duncan; Chang Soo Kim; Daniel F. Moyano; Vincent M. Rotello

2014-10-15T23:59:59.000Z

40

The Strip and Underground Mine Reclamation Act (Montana) | Department of  

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

The Strip and Underground Mine Reclamation Act (Montana) The Strip and Underground Mine Reclamation Act (Montana) The Strip and Underground Mine Reclamation Act (Montana) < Back Eligibility Utility Investor-Owned Utility Industrial Construction Municipal/Public Utility Installer/Contractor Rural Electric Cooperative Program Info State Montana Program Type Siting and Permitting Provider Montana Department of Environmental Quality The policy of the state is to provide adequate remedies to protect the environmental life support system from degradation and to prevent unreasonable depletion and degradation of natural resources from strip and underground mining. This Act imposes permitting and operating restrictions on strip and underground mining activities for coal and uranium, and authorizes the Department of Environmental Quality to administer a

Note: This page contains sample records for the topic "higher stripping ratios" 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

Optimization of in-vacuo template-stripped Pt surfaces via UHV STM  

Science Journals Connector (OSTI)

A recently demonstrated [1] in-vacuo template-stripping process is applied to the study of platinum films stripped from ultra-flat silicon-oxide surfaces. Template-stripped (TS) Pt surfaces, prepared with a range...

D. Ohlberg; J.J. Blackstock; R. Ragan; S. Kim; R. Stanley Williams

2005-03-01T23:59:59.000Z

42

isotopic ratio | EMSL  

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

isotopic ratio isotopic ratio Leads No leads are available at this time. Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. Abstract: As a candidate...

43

An 850-micron SCUBA map of the Groth Strip and reliable source extraction  

E-Print Network [OSTI]

We present an 850-micron map and list of candidate sources in a 70 arcmin^2 sub-area of the Groth Strip observed using SCUBA. We initially detect 7 candidate sources with signal-to-noise ratios (SNRs) between 3.0 and 3.5 and 4 candidate sources with SNR > 3.5. Simulations suggest that on average in a map this size one expects 1.6 false positive sources for SNR > 3.5 and 4.5 for 3 3.5 which has a reasonable chance of being real.

Kristen Coppin; Mark Halpern; Douglas Scott; Colin Borys; Scott Chapman

2004-12-10T23:59:59.000Z

44

Finite-Size Scaling for the Ising Model on the Möbius Strip and the Klein Bottle  

Science Journals Connector (OSTI)

We study the finite-size scaling properties of the Ising model on the Möbius strip and the Klein bottle. The results are compared with those of the Ising model under different boundary conditions, that is, the free, cylindrical, and toroidal boundary conditions. The difference in the magnetization distribution function p(m) for various boundary conditions is discussed in terms of the number of the percolating clusters and the cluster size. We also find interesting aspect-ratio dependence of the value of the Binder parameter at T=Tc for various boundary conditions. We discuss the relation to the finite-size correction calculations for the dimer statistics.

Kazuhisa Kaneda and Yutaka Okabe

2001-03-05T23:59:59.000Z

45

A novel approach to heat transfer enhancement using trapezoid shaped spiral strips to promote tumble and swirl in a slot shaped channel used in heat exchangers  

E-Print Network [OSTI]

Heat transfer results for a given slot shaped channel with a 3:1 aspect ratio are presented using various configurations of a trapezoid shaped spiral wound strips to enhance swirl and tumble motion in the channel. The Reynolds numbers investigated...

Segura, D.; Acharya, S.

2012-01-01T23:59:59.000Z

46

Re-defining the Empirical ZZ Ceti Instability Strip  

E-Print Network [OSTI]

We use the new ZZ Ceti stars (hydrogen atmosphere white dwarf variables; DAVs) discovered within the Sloan Digital Sky Survey (Mukadam et al. 2004) to re-define the empirical ZZ Ceti instability strip. This is the first time since the discovery of white dwarf variables in 1968 that we have a homogeneous set of spectra acquired using the same instrument on the same telescope, and with consistent data reductions, for a statistically significant sample of ZZ Ceti stars. The homogeneity of the spectra reduces the scatter in the spectroscopic temperatures and we find a narrow instability strip of width ~950K, from 10850--11800K. We question the purity of the DAV instability strip as we find several non-variables within. We present our best fit for the red edge and our constraint for the blue edge of the instability strip, determined using a statistical approach.

Anjum S. Mukadam; D. E. Winget; Ted von Hippel; M. H. Montgomery; S. O. Kepler; A. F. M. Costa

2004-05-28T23:59:59.000Z

47

Dynamic response of guardrail systems encased in pavement mow strips  

E-Print Network [OSTI]

Strong post guardrail systems have long been employed to keep misguided vehicles on the roadway. In order to combat vegetation growth around the posts, many new guardrail installations are being encased in pavement mow strips. By increasing...

Seckinger, Nathaniel Ryan

2012-06-07T23:59:59.000Z

48

Development of a thin steel strip casting process. Final report  

SciTech Connect (OSTI)

This is a comprehensive effort to develop direct strip casting to the point where a pilot scale program for casting carbon steel strip could be initiated. All important aspects of the technology were being investigated, however the program was terminated early due to a change in the business strategy of the primary contractor, Armco Inc. (focus to be directed at specialty steels, not low carbon steel). At termination, the project was on target on all milestones and under budget. Major part was casting of strip at the experiment casting facility. A new caster, capable of producing direct cast strip of up to 12 in. wide in heats of 1000 and 3000 lb, was used. A total of 81 1000-1200 lb heats were cast as well as one test heat of 3000 lb. Most produced strip of from 0.016 to 0.085 in. thick. Process reliability was excellent for short casting times; quality was generally poor from modern hot strip mill standards, but the practices necessary for good surface quality were identified.

Williams, R.S.

1994-04-01T23:59:59.000Z

49

Cost-Effectiveness Ratio  

Science Journals Connector (OSTI)

The cost?effectiveness ratio (CER) is a calculation that summarizes the intervention's net cost and effectiveness. The three types of CER are: the average cost?effectiveness ratio (ACER), the marginal cost?...

2008-01-01T23:59:59.000Z

50

Mechanically stable, high aspect ratio, multifilar, wound, ribbon-type conductor and method for manufacturing same  

DOE Patents [OSTI]

A mechanically stable, wound, multifilar, ribbon-type conductor having a cross-sectional aspect ratio which may be greater than 12:1, comprising a plurality of conductive strands wound to form a flattened helix containing a plastic strip into which the strands have been pressed so as to form a bond between the strip and the strands. The bond mechanically stabilizes the conductor under tension, preventing it from collapsing into a tubular configuration. In preferred embodiments the plastic strip may be polytetrafluoroethylene, and the conductive strands may be formed from a superconductive material. Conductors in accordance with the present invention may be manufactured by winding a plurality of conductive strands around a hollow mandrel; the cross-section of a hollow mandrel; the cross-section of the mandrel continuously varying from substantially circular to a high aspect ratio elipse while maintaining a constant circumference. The wound conductive strands are drawn from the mandrel as a multifilar helix while simultaneously a plastic strip is fed through the hollow mandrel so that it is contained within the helix as it is withdrawn from the mandrel. The helical conductor is then compressed into a ribbon-like form and the strands are bonded to the plastic strip by a combination of heat and pressure.

Cottingham, James G. (Center Moriches, NY)

1987-01-01T23:59:59.000Z

51

2D Position Sensitive Microstrip Sensors with Charge Division Along the Strip: Studies on the position measurement error  

E-Print Network [OSTI]

Position sensitivity in semiconductor detectors of ionizing radiation is usually achieved by the segmentation of the sensing diode junction in many small sensing elements read out separately as in the case of conventional microstrips and pixel detectors. Alternatively, position sensitivity can be obtained by splitting the ionization signal collected by one single electrode amongst more than one readout channel with the ratio of the collected charges depending on the position where the signal was primary generated. Following this later approach, we implemented the charge division method in a conventional microstrip detector to obtain position sensitivity along the strip. We manufactured a proof-of-concept demonstrator where the conventional aluminum electrodes were replaced by slightly resistive electrodes made of strongly doped poly-crystalline silicon and being readout at both strip ends. Here, we partially summarize the laser characterization of this first proof-of-concept demonstrator with special emphas...

Bassignana, D; Fernandez, M; Jaramillo, R; Lozano, M; Munoz, F J; Pellegrini, G; Quirion, D; Vila, I; Vitorero, F

2013-01-01T23:59:59.000Z

52

EMSL - isotopic ratio  

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

isotopic-ratio en Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. http:www.emsl.pnl.govemslwebpublicationsmagnesium-behavior-and-structural-def...

53

Strip casting with fluxing agent applied to casting roll  

DOE Patents [OSTI]

A strip caster (10) for producing a continuous strip (24) includes a tundish (12) for containing a melt (14), a pair of horizontally disposed water cooled casting rolls (22) and devices (29) for electrostatically coating the outer peripheral chill surfaces (44) of the casting rolls with a powder flux material (56). The casting rolls are juxtaposed relative to one another for forming a pouting basin (18) for receiving the melt through a teeming tube (16) thereby establishing a meniscus (20) between the rolls for forming the strip. The melt is protected from the outside air by a non-oxidizing gas passed through a supply line (28) to a sealing chamber (26). A preferred flux is boron oxide having a melting point of about 550.degree. C. The flux coating enhances wetting of the steel melt to the casting roll and dissolves any metal oxide formed on the roll.

Williams, Robert S. (Fairfield, OH); O'Malley, Ronald J. (Miamisburg, OH); Sussman, Richard C. (West Chester, OH)

1997-01-01T23:59:59.000Z

54

Graded pitch electromagnetic pump for thin strip metal casting systems  

DOE Patents [OSTI]

A metal strip casing system is provided with an electromagnetic pump which includes a pair of primary blocks having a graded pole pitch, polyphase ac winding and being arranged on opposite sides of a movable heat sink. A nozzle is provided for depositing liquid metal on the heat sink such that the resulting metal strip and heat sink combination is subjected to a longitudinal electromagnetic field which increases in wavelength in the direction of travel of the heat sink, thereby subjecting the metal and heat sink to a longitudinal force having a magnitude which increases in the direction of travel. 4 figs.

Kuznetsov, S.B.

1986-04-01T23:59:59.000Z

55

ARM - Measurement - Isotope ratio  

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

govMeasurementsIsotope ratio govMeasurementsIsotope ratio ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Isotope ratio Ratio of stable isotope concentrations. Categories Atmospheric Carbon, Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments FLASK : Flask Samplers for Carbon Cycle Gases and Isotopes Field Campaign Instruments FLASK : Flask Samplers for Carbon Cycle Gases and Isotopes Datastreams FLASK : Flask Samplers for Carbon Cycle Gases and Isotopes

56

Strip-Mining: House, Senate Gird for Renewed Debate  

Science Journals Connector (OSTI)

...than half the nation's coal. Superimposed on these...nation's low-sulfur coal lies rela-tively close...unit trains" of 100 coal cars and more are already...in March that strip-mining, which began in earnest...million acres, mostly in Appalachia, only half of which...

Robert Gillette

1973-08-10T23:59:59.000Z

57

Ram Pressure Stripping in Groups: Comparing Theory and Observations  

E-Print Network [OSTI]

Ram pressure stripping may be the dominant mechanisms driving the evolution of galaxy colors in groups and clusters. In this paper, an analytic model of ram pressure stripping is confronted with observations of galaxy colors and star formation rates in groups using a group catalog drawn from the Sloan Digital Sky Survey. An observed increase in the fraction of galaxies residing on the red sequence, the red fraction, with both increasing group mass, $M_{gr}$, and decreasing satellite luminosity, $L_{sat}$, is predicted by the model. The size of the differences in the red fraction can be understood in terms of the effect of the scatter in satellite and cluster morphologies and satellite orbits on the relationship between $M_{gr}$ and $L_{sat}$ and the stripped gas fraction. Observations of the group galaxies' H$\\delta$ and 4000\\AA break spectral measures and a comparison of the distribution of $SFR/M_{\\ast}$ for star forming galaxies in the groups and in isolation both indicate that the color differences observed in the groups are the result of slowly declining SFRs, as expected if the color change is driven by stripping of the outer H \\textsc{i} disk.

J. A. Hester

2006-10-03T23:59:59.000Z

58

Geologists call for desalination of Gaza Strip's water  

Science Journals Connector (OSTI)

... water drawn from the aquifer in Gaza would lower salt levels, the researchers say. Desalination plants could convert the salty water to fresh water to make up for the reduction ... just ten wells near the border between Israel and the Gaza Strip and two small desalination facilities could do the job. ...

Betsy Mason

2003-11-13T23:59:59.000Z

59

Case studies on Route 1 : how the perceived identity of local commercial strips affects zoning  

E-Print Network [OSTI]

Designers, planners, and new urbanists have often argued that highway strips, replete with big box retail and countless strip malls, are essentially placeless. It has also been argued that generic local zoning is largely ...

Pollans, Lily Baum

2005-01-01T23:59:59.000Z

60

Optical properties of wide single-mode strip and grating loaded channel waveguides  

SciTech Connect (OSTI)

New wide single-mode strip and grating loaded (SGL) channel waveguides made of silicon nitride on the oxide buffer layer of a planar silicon-on-insulator waveguide are studied. The central 10-lm-wide strip produces a multi-mode channel waveguide and diffraction gratings with a period 0.6 lm built on the structure edges produce mode-dependent additional losses due to radiation to the surrounding medium. The optical properties of these waveguides are discussed using the results of a three-dimensional numerical simulation by the FDTD and BPM methods. It is shown that a wide SGL waveguide is quasi-single-mode one because it has a small propagation loss ({approx} 0.3 dB cm{sup -1}) for the fundamental mode and a high (up to -20 dB cm{sup -1}) loss for the higher order modes. The new SGL waveguides are CMOS compatible and can become basic for fabricating new photonic elements, including tunable optical filters and multi-plexers based on the multireflector technology. (waveguides)

Tsarev, Andrei V [Rzhanov Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk (Russian Federation)

2009-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Architecture of a Silicon Strip Beam Position Monitor  

SciTech Connect (OSTI)

A collaboration between Fermilab and the Institute for High Energy Physics (IHEP), Beijing, has developed a beam position monitor for the IHEP test beam facility. This telescope is based on 5 stations of silicon strip detectors having a pitch of 60 microns. The total active area of each layer of the detector is about 12 x 10 cm{sup 2}. Readout of the strips is provided through the use of VA1 ASICs mounted on custom hybrid printed circuit boards and interfaced to Adapter Cards via copper-over-kapton flexible circuits. The Adapter Cards amplify and level-shift the signal for input to the Fermilab CAPTAN data acquisition nodes for data readout and channel configuration. These nodes deliver readout and temperature data from triggered events to an analysis computer over gigabit Ethernet links.

Angstadt, R.; /Fermilab; Cooper, W.; /Fermilab; Demarteau, M.; /Fermilab; Green, J.; /Fermilab; Jakubowski, S.; /Fermilab; Prosser, A.; /Fermilab; Rivera, R.; /Fermilab; Turqueti, M.; /Fermilab; Utes, M.; /Fermilab; Cai, X.; /Beijing, Inst. High Energy Phys.

2010-10-01T23:59:59.000Z

62

Architecture of a Silicon Strip Beam Position Monitor  

E-Print Network [OSTI]

A collaboration between Fermilab and the Institute for High Energy Physics (IHEP), Beijing, has developed a beam position monitor for the IHEP test beam facility. This telescope is based on 5 stations of silicon strip detectors having a pitch of 60 microns. The total active area of each layer of the detector is about 12x10 cm2. Readout of the strips is provided through the use of VA1` ASICs mounted on custom hybrid printed circuit boards and interfaced to Adapter Cards via copper-over-kapton flexible circuits. The Adapter Cards amplify and level-shift the signal for input to the Fermilab CAPTAN data acquisition nodes for data readout and channel configuration. These nodes deliver readout and temperature data from triggered events to an analysis computer over gigabit Ethernet links.

R. Angstadt; W. Cooper; M. Demarteau; J. Green; S. Jakubowski; A. Prosser; R. Rivera; M. Turqueti; M. Utes; Xiao Cai

2010-10-28T23:59:59.000Z

63

Commercial Reference Building: Strip Mall | OpenEI  

Open Energy Info (EERE)

Strip Mall Strip Mall Dataset Summary Description Commercial reference buildings provide complete descriptions for whole building energy analysis using EnergyPlus simulation software. Included here is data pertaining to the reference building type Strip Mall for each of the 16 climate zones, and each of three construction categories: new construction, post-1980 construction existing buildings, pre-1980 construction existing buildings.The dataset includes four key components: building summary, zone summary, location summary and a picture. Building summary includes details about: form, fabric, and HVAC. Zone summary includes details such as: area, volume, lighting, and occupants for all types of zones in the building. Location summary includes key building information as it pertains to each climate zone, including: fabric and HVAC details, utility costs, energy end use, and peak energy demand.In total, DOE developed 16 reference building types that represent approximately 70% of commercial buildings in the U.S.; for each type, building models are available for the three construction categories. The commercial reference buildings (formerly known as commercial building benchmark models) were developed by the U.S. Department of Energy (DOE), in conjunction with three of its national laboratories.Additional data is available directly from DOE's Energy Efficiency & Renewable Energy (EERE) Website, including EnergyPlus software input files (.idf) and results of the EnergyPlus simulations (.html).

64

Magnetic Fe3O4@TiO2 Nanoparticles-based Test Strip Immunosensing Device for Rapid Detection of Phosphorylated Butyrylcholinesterase  

SciTech Connect (OSTI)

An integrated magnetic nanoparticles-based test-strip immunosensing device was developed for rapid and sensitive quantification of phosphorylated butyrylcholinesterase (BChE), the biomarker of exposure to organophosphous pesticides (OP), in human plasma. In order to overcome the difficulty in scarce availability of OP-specific antibody, here magnetic Fe3O4@TiO2 nanoparticles were used and adsorbed on the test strip through a small magnet inserted in the device to capture target OP-BChE through selective binding between TiO2 and OP moiety. Further recognition was completed by horseradish peroxidase (HRP) and anti-BChE antibody (Ab) co-immobilized gold nanoparticles (GNPs). Their strong affinities among Fe3O4@TiO2, OP-BChE and HRP/Ab-GNPs were characterized by quartz crystal microbalance (QCM), surface plasmon resonance (SPR) and square wave voltammetry (SWV) measurements. After cutting off from test strip, the resulted immunocomplex (HRP/Ab-GNPs/OP-BChE/Fe3O4@TiO2) was measured by SWV using a screen printed electrode under the test zone. Greatly enhanced sensitivity was achieved by introduction of GNPs to link enzyme and antibody at high ratio, which amplifies electrocatalytic signal significantly. Moreover, the use of test strip for fast immunoreactions reduces analytical time remarkably. Coupling with a portable electrochemical detector, the integrated device with advanced nanotechnology displays great promise for sensitive, rapid and in-filed on-site evaluation of OP poisoning.

Ge, Xiaoxiao; Zhang, Weiying; Lin, Yuehe; Du, Dan

2013-12-15T23:59:59.000Z

65

Megatrends in Higher Education.  

E-Print Network [OSTI]

??Utilizing the theory of John Naisbitt's 1982 Megatrends, this study identifies eight trends for the future of higher education using content analysis of generalized print… (more)

Smith, Shannon Tucker

2008-01-01T23:59:59.000Z

66

Higher Education in Scandinavia.  

E-Print Network [OSTI]

??Higher education systems around the world have been undergoing fundamental changes through the last 50 years from more narrow self-sustaining universities for the elite and… (more)

Birch Andreasen, Lars

2015-01-01T23:59:59.000Z

67

Envera Variable Compression Ratio Engine  

SciTech Connect (OSTI)

Aggressive engine downsizing, variable compression ratio and use of the Atkinson cycle are being combined to improve fuel economy by up to 40 percent relative to port fuel injected gasoline engines, while maintaining full engine power. Approach Engine downsizing is viewed by US and foreign automobile manufacturers as one of the best options for improving fuel economy. While this strategy has already demonstrated a degree of success, downsizing and fuel economy gains are currently limited. With new variable compression ratio technology however, the degree of engine downsizing and fuel economy improvement can be greatly increased. A small variable compression ratio (VCR) engine has the potential to return significantly higher vehicle fuel economy while also providing high power. Affordability and potential for near term commercialization are key attributes of the Envera VCR engine. VCR Technology To meet torque and power requirements, a smaller engine needs to do more work per stroke. This is typically accomplished by boosting the incoming charge with either a turbo or supercharger so that more energy is present in the cylinder per stroke to do the work. With current production engines the degree of engine boosting (which correlates to downsizing) is limited by detonation (combustion knock) at high boost levels. Additionally, the turbo or supercharger needs to be responsive and efficient while providing the needed boost. VCR technology eliminates the limitation of engine knock at high load levels by reducing compression ratio to {approx}9:1 (or whatever level is appropriate) when high boost pressures are needed. By reducing the compression ratio during high load demand periods there is increased volume in the cylinder at top dead center (TDC) which allows more charge (or energy) to be present in the cylinder without increasing the peak pressure. Cylinder pressure is thus kept below the level at which the engine would begin to knock. When loads on the engine are low the compression ratio can be raised (to as much as 18:1) providing high engine efficiency. It is important to recognize that for a well designed VCR engine cylinder pressure does not need to be higher than found in current production turbocharged engines. As such, there is no need for a stronger crankcase, bearings and other load bearing parts within the VCR engine. The Envera VCR mechanism uses an eccentric carrier approach to adjust engine compression ratio. The crankshaft main bearings are mounted in this eccentric carrier or 'crankshaft cradle' and pivoting the eccentric carrier 30 degrees adjusts compression ratio from 9:1 to 18:1. The eccentric carrier is made up of a casting that provides rigid support for the main bearings, and removable upper bearing caps. Oil feed to the main bearings transits through the bearing cap fastener sockets. The eccentric carrier design was chosen for its low cost and rigid support of the main bearings. A control shaft and connecting links are used to pivot the eccentric carrier. The control shaft mechanism features compression ratio lock-up at minimum and maximum compression ratio settings. The control shaft method of pivoting the eccentric carrier was selected due to its lock-up capability. The control shaft can be rotated by a hydraulic actuator or an electric motor. The engine shown in Figures 3 and 4 has a hydraulic actuator that was developed under the current program. In-line 4-cylinder engines are significantly less expensive than V engines because an entire cylinder head can be eliminated. The cost savings from eliminating cylinders and an entire cylinder head will notably offset the added cost of the VCR and supercharging. Replacing V6 and V8 engines with in-line VCR 4-cylinder engines will provide high fuel economy at low cost. Numerous enabling technologies exist which have the potential to increase engine efficiency. The greatest efficiency gains are realized when the right combination of advanced and new technologies are packaged together to provide the greatest gains at the least cost. Aggressive engine downsiz

Charles Mendler

2011-03-15T23:59:59.000Z

68

Choose the Right Advanced Power Strip for You | Department of Energy  

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

Choose the Right Advanced Power Strip for You Choose the Right Advanced Power Strip for You Choose the Right Advanced Power Strip for You October 28, 2013 - 11:33am Addthis Choose the right advanced power strip based on your habits to reduce the electricity wasted when your electronic devices are idle. Choose the right advanced power strip based on your habits to reduce the electricity wasted when your electronic devices are idle. Lieko Earle, Ph.D. Senior Engineer, Residential Buildings, National Renewable Energy Laboratory Bethany Sparn, M.S. Engineer, Residential Buildings, National Renewable Energy Laboratory What are the key facts? Advanced power strips (APS) can help reduce the electricity wasted when electronics are idle, without changing habits or how you use devices Choose the right APS based on your habits and the devices you want

69

Higher Dimensional Elko Theory  

E-Print Network [OSTI]

We show that the so called Elko equation can be derived from a 5-dimensional Dirac equation. We argue that this result can be relevant for dark matter and cosmological scenarios. We generalize our procedure to higher dimensions.

J. A. Nieto

2014-07-07T23:59:59.000Z

70

Peak power ratio generator  

DOE Patents [OSTI]

A peak power ratio generator is described for measuring, in combination with a conventional power meter, the peak power level of extremely narrow pulses in the gigahertz radio frequency bands. The present invention in a preferred embodiment utilizes a tunnel diode and a back diode combination in a detector circuit as the only high speed elements. The high speed tunnel diode provides a bistable signal and serves as a memory device of the input pulses for the remaining, slower components. A hybrid digital and analog loop maintains the peak power level of a reference channel at a known amount. Thus, by measuring the average power levels of the reference signal and the source signal, the peak power level of the source signal can be determined.

Moyer, Robert D. (Albuquerque, NM)

1985-01-01T23:59:59.000Z

71

Container lid gasket protective strip for double door transfer system  

DOE Patents [OSTI]

An apparatus and a process for forming a protective barrier seal along a "ring of concern" of a transfer container used with double door systems is provided. A protective substrate is supplied between a "ring of concern" and a safety cover in which an adhesive layer of the substrate engages the "ring of concern". A compressive foam strip along an opposite side of the substrate engages a safety cover such that a compressive force is maintained between the "ring of concern" and the adhesive layer of the substrate.

Allen, Jr., Burgess M

2013-02-19T23:59:59.000Z

72

Cryogenic fractionator gas as stripping gas of fines slurry in a coking and gasification process  

DOE Patents [OSTI]

In an integrated coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a scrubbing process and wherein the resulting solids-liquid slurry is stripped with a stripping gas to remove acidic gases, at least a portion of the stripping gas comprises a gas comprising hydrogen, nitrogen and methane separated from the coker products.

DeGeorge, Charles W. (Chester, NJ)

1981-01-01T23:59:59.000Z

73

E-Print Network 3.0 - alice silicon strip Sample Search Results  

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

results for: alice silicon strip Page: << < 1 2 3 4 5 > >> 1 Department of Physics & Astronomy Experimental Particle Physics Group Summary: functions of the ALICE silicon system...

74

E-Print Network 3.0 - automated skull-stripping methods Sample...  

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

approach to skull-strip the images. This had the ... Source: Columbia University, Pediatric Brain Imaging Laboratory; Davatzikos, Christos - Departments of Bioengineering &...

75

Integration of stripping of fines slurry in a coking and gasification process  

DOE Patents [OSTI]

In an integrated fluid coking and gasification process wherein a stream of fluidized solids is passed from a fluidized bed coking zone to a second fluidized bed and wherein entrained solid fines are recovered by a wet scrubbing process and wherein the resulting solids-liquid slurry is stripped to remove acidic gases, the stripped vapors of the stripping zone are sent to the gas cleanup stage of the gasification product gas. The improved stripping integration is particularly useful in the combination coal liquefaction process, fluid coking of bottoms of the coal liquefaction zone and gasification of the product coke.

DeGeorge, Charles W. (Chester, NJ)

1980-01-01T23:59:59.000Z

76

Energy Profit Ratio Compared  

SciTech Connect (OSTI)

We need more oil energy to take out oil under the ground. Limit resources make us consider other candidates of energy source instead of oil. Electricity shall be the main role more and more like electric vehicles and air conditioners so we should consider electricity generation ways. When we consider what kind of electric power generation is the best or suitable, we should not only power generation plant but whole process from mining to power generation. It is good way to use EPR, Energy Profit Ratio, to analysis which type is more efficient and which part is to do research and development when you see the input breakdown analysis. Electricity by the light water nuclear power plant, the hydrogen power plant and the geothermal power plant are better candidates from EPR analysis. Forecasting the world primly energy supply in 2050, it is said that the demand will be double of the demand in 2000 and the supply will not be able to satisfy the demand in 2050. We should save 30% of the demand and increase nuclear power plants 3.5 times more and recyclable energy like hydropower plants 3 times more. When the nuclear power plants are 3.5 times more then uranium peak will come and we will need breed uranium. I will analysis the EPR of FBR. Conclusion: A) the EPR of NPS in Japan is 17.4 and it is the best of all. B) Many countries will introduce new nuclear power plants rapidly may be 3.5 times in 2050. C) Uranium peak will happen around 2050. (author)

Amano, Osamu [2-11-1, Iwado Kita, Komae-shi, Tokyo 201-8511 (Japan)

2007-07-01T23:59:59.000Z

77

386 Anal. Chem. 1987, 59,386-389 Square Wave Anodic Stripping Voltammetry at the Mercury  

E-Print Network [OSTI]

386 Anal. Chem. 1987, 59,386-389 Square Wave Anodic Stripping Voltammetry at the Mercury Film treatment of square wave anodic stripping voltammetry at a mercury film electrode Is presented. Nu- merlcal) frequency ( f ) and amount of metal depostted In the mercury layer (9R) and glves a response 6 tlmes

Kounaves, Samuel P.

78

Development of an immunochromatographic strip test for the rapid detection of Zearalenone in corn  

Science Journals Connector (OSTI)

Development of an immunochromatographic strip test for the rapid detection of Zearalenone in corn ... A rapid immunochromatographic test strip had been developed for the detection of zearalenone (ZEN) residues in corn. ... The test could be accomplished within 5–10 min. ...

Ya ning Sun; Xiao fei Hu; Yong Zhang; Ji fei Yang; Fang yu Wang; Yao Wang; Rui guang Deng; Gai ping Zhang

2014-10-24T23:59:59.000Z

79

The Strip and Underground Mine Siting Act (Montana) | Department of Energy  

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

The Strip and Underground Mine Siting Act (Montana) The Strip and Underground Mine Siting Act (Montana) The Strip and Underground Mine Siting Act (Montana) < Back Eligibility Utility Investor-Owned Utility Industrial Construction Municipal/Public Utility Installer/Contractor Rural Electric Cooperative Program Info State Montana Program Type Siting and Permitting Provider Montana Department of Environmental Quality The policy of the state is to provide adequate remedies to protect the environmental life support system from degradation and to prevent unreasonable depletion and degradation of natural resources from strip and underground mining. This Act grants the Department of Environmental Quality the authority to review and approve or disapprove new strip-mine and new underground-mine site locations and reclamation plans and to adopt relevant

80

" Column: Energy-Consumption Ratios;"  

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

" Level: National Data; " " Row: Values of Shipments within NAICS Codes;" " Column: Energy-Consumption Ratios;" " Unit: Varies." ,,,,"Consumption" ,,,"Consumption","per...

Note: This page contains sample records for the topic "higher stripping ratios" 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

Science Taking Higher  

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

4, 1997 4, 1997 Number 7 f Science Taking Higher Profile in Capital continued on page 8 INSIDE 2 Computers and Accelerators 4 Inventions 6 Sloan Digital Sky Survey upon the Clinton Administration and the 105th Congress to increase the nation's investment in scientific research and education. This awareness of science issues emanating from the nation's capital has heartened many of those toiling in the country's laboratories and universities; however, researchers interviewed for this article also said they are closely observing how the rhetoric translates into increased funding as the appropriations process plays out. "I see these [initiatives] as demonstrations of the underlying support of basic science in the community and in Congress," said Jeffrey Photo courtesy

82

Costs and benefits of federal regulation of coal strip mining. Report E-82-08  

SciTech Connect (OSTI)

This study has attempted to assess the aggregate costs and benefits of Surface Mining Control and Reclamation ACt of 1977 (SMCRA). This has required a model of the US coal market, as well as disaggregated estimates of the costs of satisfying SMCRA's standards and the values of the environmental amenities yielded by coal-bearing land areas. Both the costs and benefits of strip mining regulation increase as policy moves from the West through the Midwest to Appalachia. SMCRA is least cost-effective in Appalachia, where stringent regulatory requirements produce a high level of environmental benefits at an even higher level of costs. SMCRA performs better relative to economic criteria of efficient resource use in the Midwest and West, although it apparently fails the overall national cost-benefit test and imposes aggregate dead-weight losses on the nation's economy in the range of $100 million per year. It does this while transferring significant amounts of income from coal consumers ($400 million per year) and surface coal producers ($980 million per year) to underground coal producers ($130 million per year) and the consumers of environmental amentities ($1.1 billion per year).

Kalt, J.P.

1982-08-01T23:59:59.000Z

83

Results from a beam test of silicon strip sensors manufactured by Infineon Technologies AG  

E-Print Network [OSTI]

Most modern particle physics experiments use silicon based sensors for their tracking systems. These sensors are able to detect particles generated in high energy collisions with high spatial resolution and therefore allow the precise reconstruction of particle tracks. So far only a few vendors were capable of producing silicon strip sensors with the quality needed in particle physics experiments. Together with the European-based semiconductor manufacturer Infineon Technologies AG (Infineon) the Institute of High Energy Physics of the Austrian Academy of Sciences (HEPHY) developed planar silicon strip sensors in p-on-n technology. This work presents the first results from a beam test of strip sensors manufactured by Infineon.

Dragicevic, M; Bartl, U; Bergauer, T; Gamerith, S; Hacker, J; König, A; Kröner, F; Kucher, E; Moser, J; Neidhart, T; Schulze, H-J; Schustereder, W; Treberspurg, W; Wübben, T

2014-01-01T23:59:59.000Z

84

Stripped elliptical galaxies as probes of ICM physics: II. Stirred, but mixed? Viscous and inviscid gas stripping of the Virgo elliptical M89  

E-Print Network [OSTI]

(abridged) Elliptical cluster galaxies moving through the ICM are successively stripped of their gaseous atmospheres. Deep X-ray observations reveal the detailed structure of galactic tails and wakes and of the interface between the galactic gas and the ICM. This fine-structure depends on dynamic conditions (galaxy potential, initial gas contents, orbit in the host cluster), stripping stage (early infall, pre-/post-pericenter passage), as well as on the still ill-constrained ICM plasma properties (thermal conductivity, viscosity, magnetic field structure). The first paper of this series describes flow patterns and stages of inviscid gas stripping. Here we study the effect of a Spitzer-like temperature dependent viscosity corresponding to Reynolds numbers, Re, of 50 to 5000 w.r.t. the ICM flow around the remnant atmosphere. Global flow patterns are independent of viscosity in this range. Viscosity suppresses Kelvin-Helmholtz instabilities (KHIs) at the sides of the remaining atmosphere and prevents mixing of c...

Roediger, E; Nulsen, P E J; Forman, W R; Machacek, M; Randall, S; Jones, C; Churazov, E; Kokotanekova, R

2014-01-01T23:59:59.000Z

85

Evaluation of rumble strips at rural stop-controlled intersections in Texas  

E-Print Network [OSTI]

in mitigating these occurrences by warning drivers of upcoming decision points. One such device is transverse rumble strips, which act to provide motorists with an audible and tactile warning that their vehicle is approaching a decision point of critical...

Thompson, Tyrell D.

2005-11-01T23:59:59.000Z

86

Regeneration of an aqueous solution from an acid gas absorption process by matrix stripping  

DOE Patents [OSTI]

Carbon dioxide and other acid gases are removed from gaseous streams using aqueous absorption and stripping processes. By replacing the conventional stripper used to regenerate the aqueous solvent and capture the acid gas with a matrix stripping configuration, less energy is consumed. The matrix stripping configuration uses two or more reboiled strippers at different pressures. The rich feed from the absorption equipment is split among the strippers, and partially regenerated solvent from the highest pressure stripper flows to the middle of sequentially lower pressure strippers in a "matrix" pattern. By selecting certain parameters of the matrix stripping configuration such that the total energy required by the strippers to achieve a desired percentage of acid gas removal from the gaseous stream is minimized, further energy savings can be realized.

Rochelle, Gary T. (Austin, TX); Oyenekan, Babatunde A. (Katy, TX)

2011-03-08T23:59:59.000Z

87

Alternating Current Loss of Strip Arrays as a Model for Resistive Fault Current Limiters  

Science Journals Connector (OSTI)

Hysteretic alternating current (ac) loss P...in arrays of superconducting strip lines are calculated on the bases of the critical state model. For a simplified model of a film-type fault current limiter, we consi...

Yasunori Mawatari; Hirofumi Yamasaki

2000-01-01T23:59:59.000Z

88

Rapid determination of trace concentrations of lead in gasoline by anodic stripping voltammetry  

Science Journals Connector (OSTI)

Anodic stripping voltammetry can be used for the determination of ?g/l concentrations of lead in gasoline. A gasoline sample is extracted with iodine monochloride reagent solution. An aliquot of the aqueous ph...

Pentti Laukkanen

89

Effect of acid decontamination on the microbiological and sensory characteristics of beef strip loin steaks  

E-Print Network [OSTI]

EFFECT OF ACID DECONTAMINATION ON THE MICROBIOLOGICAL AND SENSORY CHARACTERISTICS OF BEEF STRIP LOIN STEAKS A Thesis by Z IS CA DIXON Submitted to the Graduate College of Texas A & M University in partial fullfillment of the requirement... for the degree of MASTER OF SCIENCE August 19B7 Major Subject: Food Scienc and Technology / / / EFFECT OF ACID DECONTAMINATION ON THE MICROBIOLOGICAL AND SENSORY CHARACTERISTICS OF BEEF STRIP LOIN STEAKS A Thesis by ZISCA DIXON Approved as to style...

Dixon, Zisca

2012-06-07T23:59:59.000Z

90

STRIP-PET: a novel detector concept for the TOF-PET scanner  

E-Print Network [OSTI]

We briefly present a design of a new PET scanner based on strips of polymer scintillators arranged in a barrel constituting a large acceptance detector. The solution proposed is based on the superior timing properties of the polymer scintillators. The position and time of the reaction of the gamma quanta in the detector material will be determined based on the time of arrival of light signals to the edges of the scintillator strips.

P. Moskal; T. Bednarski; P. Bia?as; M. Ciszewska; E. Czerwi?ski; A. Heczko; M. Kajetanowicz; ?. Kap?on; A. Kochanowski; G. Konopka-Cupia?; G. Korcyl; W. Krzemie?; K. ?ojek; J. Majewski; W. Migda?; M. Molenda; Sz. Nied?wiecki; M. Pa?ka; Z. Rudy; P. Salabura; M. Silarski; A. S?omski; J. Smyrski; J. Zdebik; M. Zieli?ski

2013-05-23T23:59:59.000Z

91

ARM - Measurement - Backscatter depolarization ratio  

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

govMeasurementsBackscatter depolarization ratio govMeasurementsBackscatter depolarization ratio ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Backscatter depolarization ratio The ratio of cross polarized to co-polarized elastic backscatter. Categories Aerosols Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments HSRL : High Spectral Resolution Lidar RL : Raman Lidar Field Campaign Instruments HSRL : High Spectral Resolution Lidar MIRAI : JAMSTEC Research Vessel Mirai MPL-AIR : Micropulse Lidar- Airborne

92

Americium separation from nuclear fuel dissolution using higher oxidation states.  

SciTech Connect (OSTI)

Much of the complexity in current AFCI proposals is driven by the need to separate the minor actinides from the lanthanides. Partitioning and recycling Am, but not Cm, would allow for significant simplification because Am has redox chemistry that may be exploited while Cm does not. Here, we have explored methods based on higher oxidation states of Am (AmV and AmVI) to partition Am from the lanthanides. In a separate but related approach we have also initiated an investigation of the utility of TRUEX Am extraction from thiocyanate solution. The stripping of loaded TRUEX by Am oxidation or SCN- has not yet proved successful; however, the partitioning of inextractable AmV by TRUEX shows promise.

Bruce J. Mincher

2009-09-01T23:59:59.000Z

93

Spitzer View of Massive Star Formation in the Tidally Stripped Magellanic Bridge  

Science Journals Connector (OSTI)

The Magellanic Bridge is the nearest low-metallicity, tidally stripped environment, offering a unique high-resolution view of physical conditions in merging and forming galaxies. In this paper, we present an analysis of candidate massive young stellar objects (YSOs), i.e., in situ, current massive star formation (MSF) in the Bridge using Spitzer mid-IR and complementary optical and near-IR photometry. While we definitely find YSOs in the Bridge, the most massive are ~10 M ?, 45 M ? found in the LMC. The intensity of MSF in the Bridge also appears to be decreasing, as the most massive YSOs are less massive than those formed in the past. To investigate environmental effects on MSF, we have compared properties of massive YSOs in the Bridge to those in the LMC. First, YSOs in the Bridge are apparently less embedded than in the LMC: 81% of Bridge YSOs show optical counterparts, compared to only 56% of LMC sources with the same range of mass, circumstellar dust mass, and line-of-sight extinction. Circumstellar envelopes are evidently more porous or clumpy in the Bridge's low-metallicity environment. Second, we have used whole samples of YSOs in the LMC and the Bridge to estimate the probability of finding YSOs at a given H I column density, N(H I). We found that the LMC has ~3 ? higher probability than the Bridge for N(H I) >12 ? 1020 cm–2, but the trend reverses at lower N(H I). Investigating whether this lower efficiency relative to H I is due to less efficient molecular cloud formation or to less efficient cloud collapse, or to both, will require sensitive molecular gas observations.

C.-H. Rosie Chen; Remy Indebetouw; Erik Muller; Akiko Kawamura; Karl D. Gordon; Marta Sewi?o; Barbara A. Whitney; Yasuo Fukui; Suzanne C. Madden; Marilyn R. Meade; Margaret Meixner; Joana M. Oliveira; Thomas P. Robitaille; Jonathan P. Seale; Bernie Shiao; Jacco Th. van Loon

2014-01-01T23:59:59.000Z

94

Development Of Chemical Reduction And Air Stripping Processes To Remove Mercury From Wastewater  

SciTech Connect (OSTI)

This study evaluates the removal of mercury from wastewater using chemical reduction and air stripping using a full-scale treatment system at the Savannah River Site. The existing water treatment system utilizes air stripping as the unit operation to remove organic compounds from groundwater that also contains mercury (C ~ 250 ng/L). The baseline air stripping process was ineffective in removing mercury and the water exceeded a proposed limit of 51 ng/L. To test an enhancement to the existing treatment modality a continuous dose of reducing agent was injected for 6-hours at the inlet of the air stripper. This action resulted in the chemical reduction of mercury to Hg(0), a species that is removable with the existing unit operation. During the injection period a 94% decrease in concentration was observed and the effluent satisfied proposed limits. The process was optimized over a 2-day period by sequentially evaluating dose rates ranging from 0.64X to 297X stoichiometry. A minimum dose of 16X stoichiometry was necessary to initiate the reduction reaction that facilitated the mercury removal. Competing electron acceptors likely inhibited the reaction at the lower 1 doses, which prevented removal by air stripping. These results indicate that chemical reduction coupled with air stripping can effectively treat large-volumes of water to emerging part per trillion regulatory standards for mercury.

Jackson, Dennis G.; Looney, Brian B.; Craig, Robert R.; Thompson, Martha C.; Kmetz, Thomas F.

2013-07-10T23:59:59.000Z

95

Evaluation of absorption/stripping for second phase expansion of KG gas cracker  

SciTech Connect (OSTI)

This report addresses technology evaluation for a second phase expansion of BP Chemical Ltd.`s (BPCL) KG cracker. Its primary objective was to determine if the absorption/stripping technology being developed by BPCL is competitive with cryogenic demethanization technology. The expansion basis for this evaluation is a 150,000 MTA ethylene increment. This increment represents an increase in KG`s capacity from 450,000 MTA after the current expansion to an ultimate capacity of 600,000 MTA. Two recovery systems for a 150,000 MTA expansion are compared: (1) Case A - Absorption/Stripping Expansion; and (2) Case B - ARS Expansion. Another objective of this report was to confirm the magnitude of the economic advantages of the absorption/stripping technology for grass roots applications. For that evaluation, absorption/stripping was compared with the original 350,000 MTA KG recovery system. The two additional 350,000 MTA grass roots cases evaluated are: (1) Case C - Absorption/Stripping - Grass Roots Design; (2) Case D - Conventional Cryogenic Recovery (Original KG 350,000 MTA design).

NONE

1995-12-01T23:59:59.000Z

96

The stripping foil test stand in the Linac4 transfer line  

E-Print Network [OSTI]

The 160 MeV H? beam from the Linac4 (L4) linear accelerator at CERN will be injected into the proton synchrotron booster (PSB) with a new H? charge-exchange injection system. It will include a stripping foil, to convert H? into protons by stripping off the electrons. To gain experience with these very fragile foils, prior to the installation in the PSB, and test different foil materials and thicknesses, lifetimes of the foils, the foil changing mechanism and interlocking functions, a stripping foil test stand will be installed in the L4 transfer line in 2015. This paper describes the mechanical design of the system and discusses the test possibilities and parameters.

Weterings, W; Noulibos, R; Sillanoli, Y; van Trappen, P

2015-01-01T23:59:59.000Z

97

Cast Stone Formulation At Higher Sodium Concentrations  

SciTech Connect (OSTI)

A low temperature waste form known as Cast Stone is being considered to provide supplemental Low Activity Waste (LAW) immobilization capacity for the Hanford site. Formulation of Cast Stone at high sodium concentrations is of interest since a significant reduction in the necessary volume of Cast Stone and subsequent disposal costs could be achieved if an acceptable waste form can be produced with a high sodium molarity salt solution combined with a high water to premix (or dry blend) ratio. The objectives of this study were to evaluate the factors involved with increasing the sodium concentration in Cast Stone, including production and performance properties and the retention and release of specific components of interest. Three factors were identified for the experimental matrix: the concentration of sodium in the simulated salt solution, the water to premix ratio, and the blast furnace slag portion of the premix. The salt solution simulants used in this study were formulated to represent the overall average waste composition. The cement, blast furnace slag, and fly ash were sourced from a supplier in the Hanford area in order to be representative. The test mixes were prepared in the laboratory and fresh properties were measured. Fresh density increased with increasing sodium molarity and with decreasing water to premix ratio, as expected given the individual densities of these components. Rheology measurements showed that all of the test mixes produced very fluid slurries. The fresh density and rheology data are of potential value in designing a future Cast Stone production facility. Standing water and density gradient testing showed that settling is not of particular concern for the high sodium compositions studied. Heat of hydration measurements may provide some insight into the reactions that occur within the test mixes, which may in turn be related to the properties and performance of the waste form. These measurements showed that increased sodium concentration in the salt solution reduced the time to peak heat flow, and reducing the amount of slag in the premix increased the time to peak heat flow. These observations may help to describe some of the cured properties of the samples, in particular the differences in compressive strength observed after 28 and 90 days of curing. Samples were cured for at least 28 days at ambient temperature in the laboratory prior to cured properties analyses. The low activity waste form for disposal at the Hanford Site is required to have a compressive strength of at least 500 psi. After 28 days of curing, several of the test mixes had mean compressive strengths that were below the 500 psi requirement. Higher sodium concentrations and higher water to premix ratios led to reduced compressive strength. Higher fly ash concentrations decreased the compressive strength after 28 days of curing. This may be explained in that the cementitious phases matured more quickly in the mixes with higher concentrations of slag, as evidenced by the data for the time to peak heat generation. All of the test mixes exhibited higher mean compressive strengths after 90 days of curing, with only one composition having a mean compressive strength of less than 500 psi. Leachability indices were determined for the test mixes for contaminants of interest. The leaching performance of the mixes evaluated in this study was not particularly sensitive to the factors used in the experimental design. This may be beneficial in demonstrating that the performance of the waste form is robust with respect to changes in the mix composition. The results of this study demonstrate the potential to achieve significantly higher waste loadings in Cast Stone and other low temperature, cementitious waste forms. Additional work is needed to elucidate the hydration mechanisms occurring in Cast Stone formulated with highly concentrated salt solutions since these reactions are responsible for determining the performance of the cured waste form. The thermal analyses completed in this study provide some preliminary insight, although the l

Fox, K. M.; Roberts, K. A.; Edwards, T. B.

2014-02-28T23:59:59.000Z

98

Sample Results From The Next Generation Solvent Program Real Waste Extraction-Scrub-Strip Testing  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed multiple Extraction-Scrub-Strip (ESS) testing using real waste solutions, and three Next Generation Solvent (NGS) variations, which included radiologically clean pure NGS, a blend of radiologically clean NGS and radiologically clean BOBCalixC6 (NGS-MCU), and a blend of radiologically clean NGS and radiologically contaminated BOBCalixC6 from the MCU Solvent system. The results from the tests indicate that both the NGS and the NGS-MCU blend exhibit adequate extraction, scrub and strip behavior.

Peters, T. B.; Washington, A. L. II

2013-08-08T23:59:59.000Z

99

SAMPLE RESULTS FROM THE NEXT GENERATION SOLVENT PROGRAM REAL WASTE EXTRACTION-SCRUB-STRIP TESTING  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed multiple Extraction-Scrub-Strip (ESS) testing using real waste solutions, and three Next Generation Solvent (NGS) variations, which included radiologically clean pure NGS, a blend of radiologically clean NGS and radiologically clean BOBCalixC6 (NGS-MCU), and a blend of radiologically clean NGS and radiologically contaminated BOBCalixC6 from the MCU Solvent system. The results from the tests indicate that both the NGS and the NGS-MCU blend exhibit adequate extraction, scrub and strip behavior.

Peters, T.; Washington, A.

2013-06-03T23:59:59.000Z

100

Dual initiation strip charge apparatus and methods for making and implementing the same  

DOE Patents [OSTI]

A Dual Initiation Strip Charge (DISC) apparatus is initiated by a single initiation source and detonates a strip of explosive charge at two separate contacts. The reflection of explosively induced stresses meet and create a fracture and breach a target along a generally single fracture contour and produce generally fragment-free scattering and no spallation. Methods for making and implementing a DISC apparatus provide numerous advantages over previous methods of creating explosive charges by utilizing steps for rapid prototyping; by implementing efficient steps and designs for metering consistent, repeatable, and controlled amount of high explosive; and by utilizing readily available materials.

Jakaboski, Juan-Carlos (Albuquerque, NM); Todd,; Steven N. (Rio Rancho, NM); Polisar, Stephen (Albuquerque, NM); Hughs, Chance (Tijeras, NM)

2011-03-22T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Papers Based Electrochemical Biosensors: From Test Strips to Paper-Based Microfluidics  

SciTech Connect (OSTI)

Papers based biosensors such as lateral flow test strips and paper-based microfluidic devices (or paperfluidics) are inexpensive, rapid, flexible, and easy-to-use analytical tools. An apparent trend in their detection is to interpret sensing results from qualitative assessment to quantitative determination. Electrochemical detection plays an important role in quantification. This review focuses on electrochemical (EC) detection enabled biosensors. The first part provides detailed examples in paper test strips. The second part gives an overview of paperfluidics engaging EC detections. The outlook and recommendation of future directions of EC enabled biosensors are discussed in the end.

Liu, Bingwen; Du, Dan; Hua, Xin; Yu, Xiao-Ying; Lin, Yuehe

2014-05-08T23:59:59.000Z

102

Ising model on nonorientable surfaces: Exact solution for the Möbius strip and the Klein bottle  

Science Journals Connector (OSTI)

Closed-form expressions are obtained for the partition function of the Ising model on an M×N simple-quartic lattice embedded on a Möbius strip and a Klein bottle. The solutions all lead to the same bulk free energy, but for finite M and N the expressions are different depending on whether the strip width M is odd or even. Finite-size corrections at criticality are analyzed and compared with those under cylindrical and toroidal boundary conditions. Our results are consistent with the conformal field prediction of a central charge c=1/2, provided that the twisted Möbius boundary condition is regarded as a free or fixed boundary.

Wentao T. Lu and F. Y. Wu

2001-01-22T23:59:59.000Z

103

The Swedish Higher Education System  

E-Print Network [OSTI]

EDUCATION Higher education within all cycles has two strata of entry requirements: general and (additional) specific requirements. General eligibility to the first cycle is the same for all higher education. General and courses. DEGREE-AWARDING POWERS Universities have the general right to award first-, second- and third-cycle

Zhao, Yuxiao

104

Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models  

E-Print Network [OSTI]

Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models N. Legrand1,a , N. Labbe1,b D. Weisz-Patrault2,c , A. Ehrlacher2,d , T. Luks3,e heat transfers during pilot hot steel strip rolling. Two types of temperature sensors (drilled and slot

Paris-Sud XI, Université de

105

Implications of Fast Reactor Transuranic Conversion Ratio  

SciTech Connect (OSTI)

Theoretically, the transuranic conversion ratio (CR), i.e. the transuranic production divided by transuranic destruction, in a fast reactor can range from near zero to about 1.9, which is the average neutron yield from Pu239 minus 1. In practice, the possible range will be somewhat less. We have studied the implications of transuranic conversion ratio of 0.0 to 1.7 using the fresh and discharge fuel compositions calculated elsewhere. The corresponding fissile breeding ratio ranges from 0.2 to 1.6. The cases below CR=1 (“burners”) do not have blankets; the cases above CR=1 (“breeders”) have breeding blankets. The burnup was allowed to float while holding the maximum fluence to the cladding constant. We graph the fuel burnup and composition change. As a function of transuranic conversion ratio, we calculate and graph the heat, gamma, and neutron emission of fresh fuel; whether the material is “attractive” for direct weapon use using published criteria; the uranium utilization and rate of consumption of natural uranium; and the long-term radiotoxicity after fuel discharge. For context, other cases and analyses are included, primarily once-through light water reactor (LWR) uranium oxide fuel at 51 MWth-day/kg-iHM burnup (UOX-51). For CR<1, the heat, gamma, and neutron emission increase as material is recycled. The uranium utilization is at or below 1%, just as it is in thermal reactors as both types of reactors require continuing fissile support. For CR>1, heat, gamma, and neutron emission decrease with recycling. The uranium utilization exceeds 1%, especially as all the transuranic elements are recycled. exceeds 1%, especially as all the transuranic elements are recycled. At the system equilibrium, heat and gamma vary by somewhat over an order of magnitude as a function of CR. Isotopes that dominate heat and gamma emission are scattered throughout the actinide chain, so the modest impact of CR is unsurprising. Neutron emitters are preferentially found among the higher actinides, so the neutron emission varies much stronger with CR, about three orders of magnitude.

Steven J. Piet; Edward A. Hoffman; Samuel E. Bays

2010-11-01T23:59:59.000Z

106

MULTI-WAVELENGTH STUDIES OF SPECTACULAR RAM PRESSURE STRIPPING OF A GALAXY: DISCOVERY OF AN X-RAY ABSORPTION FEATURE  

SciTech Connect (OSTI)

We report the detection of an X-ray absorption feature near the galaxy M86 in the Virgo cluster. The absorber has a column density of 2-3 × 10{sup 20} cm{sup –2}, and its position coincides with the peak of an intracluster H I cloud which was removed from the galaxy NGC 4388 presumably by ram pressure. These results indicate that the H I cloud is located in front of M86 along the line-of-sight, and suggest that the stripping was primarily created by an interaction between NGC 4388 and the hot plasmas of the Virgo cluster, not the M86 halo. By calculating an X-ray temperature map, we further detected an X-ray counterpart of the H I cloud up to ?3' south of M86. It has a temperature of 0.89 keV and a mass of ?4.5 × 10{sup 8} M {sub ?}, exceeding the estimated H I gas mass. The high hot-to-cold gas ratio in the cloud indicates a significant evaporation of the H I gas, probably by thermal conduction from the hotter cluster plasma with a sub-Spitzer rate.

Gu, Liyi; Makishima, Kazuo [Research Center for the Early Universe, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)] [Research Center for the Early Universe, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Yagi, Masafumi [Optical and Infrared Astronomy Division, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)] [Optical and Infrared Astronomy Division, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Nakazawa, Kazuhiro [Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)] [Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Yoshida, Michitoshi [Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan)] [Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Fujita, Yutaka [Department of Earth and Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043 (Japan)] [Department of Earth and Space Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043 (Japan); Hattori, Takashi [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'Ohoku Place, Hilo, HI 96720 (United States)] [Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'Ohoku Place, Hilo, HI 96720 (United States); Akahori, Takuya, E-mail: lygu@juno.phys.s.u-tokyo.ac.jp [Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006 (Australia)] [Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006 (Australia)

2013-11-10T23:59:59.000Z

107

Higher Education Energy Loan Program  

Broader source: Energy.gov [DOE]

The Oklahoma Department of Commerce has established a loan/lease fund for institutes of higher education to improve energy efficiency. Two categories of funding are available for schools to reduce...

108

Effect of geometry on void formation in commercial electroplating of thin strips to copper  

E-Print Network [OSTI]

. Other methods to attach dissimilar metals include diffusion bonding [1­4], ultrasonic welding [5: Electroplating; Defects; Voids; Metal embedding; Coating failure; Thin film microsensors 1. Introduction Electroplating is one method to attach a thin strip to a metal substrate by embedding it into the coating layer

Thomas, Brian G.

109

ATLAS ID Upgrade R&D Plan: Development of a Short-Strip Silicon Detector Module  

E-Print Network [OSTI]

ATLAS ID Upgrade R&D Plan: Development of a Short-Strip Silicon Detector Module and a Frontend of the optimum technology and layout of the tracking detectors for the upgraded ATLAS ID. The goal for the intermediate tracking region in the upgraded ATLAS ID. We anticipate that much of the work would then also

California at Santa Cruz, University of

110

ATLAS Tracker Upgrade: Silicon Strip Detectors for the sLHC  

E-Print Network [OSTI]

ATLAS Tracker Upgrade: Silicon Strip Detectors for the sLHC Sergey Burdin (University of Liverpool) for ATLAS Collaboration 13th ISTC SAC Seminar "New Perspectives of High Energy Physics" 1-5 September, 2010 2021 Commission new detectors Apr 2021 - Jun 2021 Take data July 2021 3 Sep 2010 2S.Burdin / Atlas

111

A modified in vitro stripping method to automate the calculation of geometry of corneocytes imaged with  

E-Print Network [OSTI]

and Materials: In the first stage, an adhesive tape is used to collect corneocytes as in the regular stripping populated sample, in which more individual corneocytes can be observed with the help of fluorescent: The method described is suitable for the auto- mated data processing. It allows for the reliable detection

Sokolov, Igor

112

Strip, Bind, and Search: A Method for Identifying Abnormal Energy Consumption in Buildings  

E-Print Network [OSTI]

Strip, Bind, and Search: A Method for Identifying Abnormal Energy Consumption in Buildings Romain usage that leads to energy waste. The av- erage waste uncovered is as high as 2500 kWh per device; Energy Consumption; Anomaly Detection 1. INTRODUCTION Buildings are one of the prime targets to reduce

California at Berkeley, University of

113

Incineration of Residue from Paint Stripping Operations Using Plastic Media Blasting  

E-Print Network [OSTI]

i INCINERATION OF RESIDUE FROH PAINT STRIPPING OPERATIONS USING PLASTIC MEDIA BLASTING J. E. HELT N. MALLYA Group Leader Chemist Chemical Technology Division Chemical Technology Division Argonne National Laboratory Argonne National... Laboratory Argonne, Illinois Argonne, Illinois ABSTRACT A preliminary investigation has been performed on the environmental consequences of incinerating plastic-media-blasting (PHB) wastes from paint removal operations. PHB is similar to sandblasting...

Helt, J. E.; Mallya, N.

114

J. Phycol. 39, 253258 (2003) AN IMPROVED STRIPPING TECHNIQUE FOR LIGHTLY ARMORED DINOFLAGELLATES1  

E-Print Network [OSTI]

organisms or stripping off the outer membranes with ethanol to expose the underlying cellulose plates. Both morphology and develop plate tabulations: swell- ing the sutures between the cellulose plates of intact-like dinoflagellates involves removal of the outer membranes to expose the underlying cellulose plates. These plates

115

Ray-Strips: A Compact Mesh Representation for Interactive Ray Tracing Christian Lauterbach1 Sung-Eui Yoon2 Dinesh Manocha1  

E-Print Network [OSTI]

Ray-Strips: A Compact Mesh Representation for Interactive Ray Tracing Christian Lauterbach1 Sung-Eui

North Carolina at Chapel Hill, University of

116

Weather-Corrected Performance Ratio  

SciTech Connect (OSTI)

Photovoltaic (PV) system performance depends on both the quality of the system and the weather. One simple way to communicate the system performance is to use the performance ratio (PR): the ratio of the electricity generated to the electricity that would have been generated if the plant consistently converted sunlight to electricity at the level expected from the DC nameplate rating. The annual system yield for flat-plate PV systems is estimated by the product of the annual insolation in the plane of the array, the nameplate rating of the system, and the PR, which provides an attractive way to estimate expected annual system yield. Unfortunately, the PR is, again, a function of both the PV system efficiency and the weather. If the PR is measured during the winter or during the summer, substantially different values may be obtained, making this metric insufficient to use as the basis for a performance guarantee when precise confidence intervals are required. This technical report defines a way to modify the PR calculation to neutralize biases that may be introduced by variations in the weather, while still reporting a PR that reflects the annual PR at that site given the project design and the project weather file. This resulting weather-corrected PR gives more consistent results throughout the year, enabling its use as a metric for performance guarantees while still retaining the familiarity this metric brings to the industry and the value of its use in predicting actual annual system yield. A testing protocol is also presented to illustrate the use of this new metric with the intent of providing a reference starting point for contractual content.

Dierauf, T.; Growitz, A.; Kurtz, S.; Cruz, J. L. B.; Riley, E.; Hansen, C.

2013-04-01T23:59:59.000Z

117

Viscosity bound for anisotropic superfluids in higher derivative gravity  

E-Print Network [OSTI]

In the present paper, based on the principles of gauge/gravity duality we analytically compute the shear viscosity to entropy ratio corresponding to the superfluid phase in Einstein Gauss-Bonnet gravity. From our analysis we note that the ratio indeed receives a finite temperature correction below certain critical temperature. This proves the non universality of shear viscosity to entropy ratio in higher derivative theories of gravity. We also compute the upper bound for the Gauss-Bonnet coupling corresponding to the symmetry broken phase and note that the upper bound on the coupling does not seem to change as long as we are close to the critical point of the phase diagram. However the corresponding lower bound of the shear viscosity to entropy ratio seems to get modified due to the finite temperature effects.

Bhattacharyya, Arpan

2014-01-01T23:59:59.000Z

118

Viscosity bound for anisotropic superfluids in higher derivative gravity  

E-Print Network [OSTI]

In the present paper, based on the principles of gauge/gravity duality we analytically compute the shear viscosity to entropy ratio corresponding to the superfluid phase in Einstein Gauss-Bonnet gravity. From our analysis we note that the ratio indeed receives a finite temperature correction below certain critical temperature. This proves the non universality of shear viscosity to entropy ratio in higher derivative theories of gravity. We also compute the upper bound for the Gauss-Bonnet coupling corresponding to the symmetry broken phase and note that the upper bound on the coupling does not seem to change as long as we are close to the critical point of the phase diagram. However the corresponding lower bound of the shear viscosity to entropy ratio seems to get modified due to the finite temperature effects.

Arpan Bhattacharyya; Dibakar Roychowdhury

2014-10-13T23:59:59.000Z

119

Higher Yields Can Be Achieved  

Gasoline and Diesel Fuel Update (EIA)

8 8 Notes: While the current forecast is showing higher distillate production than last year, there is room for yet more volume through refiners switching to higher yields than those being forecast. This will only happen if economic incentives evolve to encourage this change. Current high spreads indicate those incentives may occur. This graph shows the distillate yield pattern over the last few years. Generally yields rise in the fall to build stocks for winter distillate use. On average, the yield increase during the fourth quarter is about 2% higher than the yield average of the lowest yield months of June, July and August. (Recognize that a 1% change in yield is about a 150 MB/D change in distillate production, which is about 4% of winter demand.) During the fall of 1996, the winter season began with very low

120

Increasing the transformer ratio at the Argonne wakefield accelerator  

Science Journals Connector (OSTI)

The transformer ratio is defined as the ratio of the maximum energy gain of the witness bunch to the maximum energy loss experienced by the drive bunch (or a bunch within a multidrive bunch train). This plays an important role in the collinear wakefield acceleration scheme. A high transformer ratio is desirable since it leads to a higher overall efficiency under similar conditions (e.g. the same beam loading, the same structure, etc.). One technique to enhance the transformer ratio beyond the ordinary limit of 2 is to use a ramped bunch train. The first experimental demonstration observed a transformer ratio only marginally above 2 due to the mismatch between the drive microbunch length and the frequency of the accelerating structure [C. Jing, A. Kanareykin, J. Power, M. Conde, Z. Yusof, P. Schoessow, and W. Gai, Phys. Rev. Lett. 98, 144801 (2007)]. Recently, we revisited this experiment with an optimized microbunch length using a UV laser stacking technique at the Argonne Wakefield Accelerator facility and measured a transformer ratio of 3.4. Measurements and data analysis from these experiments are presented in detail.

C. Jing, J. G. Power, M. Conde, W. Liu, Z. Yusof, A. Kanareykin, and W. Gai

2011-02-16T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Complex higher order derivative theories  

SciTech Connect (OSTI)

In this work is considered a complex scalar field theory with higher order derivative terms and interactions. A procedure is developed to quantize consistently this system avoiding the presence of negative norm states. In order to achieve this goal the original real scalar high order field theory is extended to a complex space attaching a complex total derivative to the theory. Next, by imposing reality conditions the complex theory is mapped to a pair of interacting real scalar field theories without the presence of higher derivative terms.

Margalli, Carlos A.; Vergara, J. David [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico 04510 DF (Mexico)

2012-08-24T23:59:59.000Z

122

A Silicon Strip Detector for the Phase II High Luminosity Upgrade of the ATLAS Detector at the Large Hadron Collider  

E-Print Network [OSTI]

This thesis presents the work carried out in the testing of the ATLAS Phase-II Upgrade electronic systems in the future strips tracker after 2023, to be installed for operations in the HL-LHC period. The high luminosity and number of interactions per crossing that will happen after the HL-LHC starts require a complete replacement of the ATLAS tracker. The systems that have been defined for the Phase-II Upgrade will be designed to cope with that increased radiation and have the right granularity to maintain the performance with higher pile-up. In this thesis I present results on single modules and larger structures comprising multiple modules. In the context of the current ATLAS Semiconductor Tracker studies, I present an analysis of the data taken by the detector from the beginning of operation in 2010 until the first Long Shut-down in 2013. The analysis consists of an energy loss study in the Semiconductor Tracker, a task the detector was not designed to perform. However, the availability of the Time-over-Th...

García-Argos, Carlos

2015-01-01T23:59:59.000Z

123

Tax Benefits and Higher Education  

E-Print Network [OSTI]

payments Tax Benefits and Higher Education Lifetime Learning Credit A nonrefundable tax credit of up to $2 deductions,tax credits are subtracted from the amount of tax owed,rather than your taxable income tax credit allows you to reduce the amount of your tax by up to $1,500 (subject to certain phaseouts

Gelfond, Michael

124

Effect of arc discharge on wear rate of Cu-impregnated carbon strip in unlubricated sliding against Cu trolley under electric current  

Science Journals Connector (OSTI)

The wear of contact strip on the pantograph of electric railway vehicle is mainly governed by arc discharge occurring simultaneously with contact break between strip and trolley wire. Sliding wear tests were carried out under electric current for the combination of Cu-impregnated baked carbon strip and Cu trolley at a sliding speed of 100 km/h. Voltage drop and current were measured at a frequency of 48 kHz and electric power, total time duration and accumulated energy of discharge were evaluated for each test strip. Plot of wear rate of strip against arc discharge energy shows a proportional relationship between them.

Shunichi Kubo; Koji Kato

1998-01-01T23:59:59.000Z

125

90.1 Prototype Building Models Strip Mall | Building Energy Codes Program  

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

Strip Mall Strip Mall The ASHRAE Standard 90.1 prototype building models were developed by Pacific Northwest National Laboratory in support of the U.S. Department of Energy's (DOE's) Building Energy Codes Program. These prototype buildings were derived from DOE's Commercial Reference Building Models. This suite of ASHRAE Standard 90.1 prototype buildings covers all the Reference Building types except supermarket, and also adds a new building prototype representing high-rise apartment buildings.The prototype models include 16 building types in 17 climate locations for ASHRAE Standards 90.1-2004, 90.1-2007 and 90.1-2010. This combination leads to a set of 816 building models (in EnergyPlus Version 6.0). Also included is a scorecard for each prototype building. The scorecard is a spreadsheet that summarizes the

126

Determining the mechanisms of catonic contamination of PEMFCs using a strip cell configuration  

SciTech Connect (OSTI)

Cationic contamination of polymer electrolyte fuel cells has been shown to cause serious performance degradation but the exact mechanisms of this degradation are not fully understood. A strip cell configuration was devised to study the mechanisms of performance degradation due to cationic contamination by changing the time and length scales of traditional fuel cells while providing a suitable reference electrode. This 'strip cell' configuration utilizes traditional Nafion{reg_sign} membranes in an inplane configuration with electrodes painted on each end. Using this cell it was determined that cationic contaminants collect near the cathode of the fuel cell under load and that this profile leads to increased losses primarily in the cathode region. These results can be directly related to performance losses in a typical PEMFC contaminated by foreign cations.

Kienitz, Brian L [Los Alamos National Laboratory; Pivovar, Bryan S [Los Alamos National Laboratory; Fernando, Garzon [Los Alamos National Laboratory; Zawodzinski, Thomas A [CWRU

2008-01-01T23:59:59.000Z

127

Interaction of Josephson Junction and Distant Vortex in Narrow Thin-Film Superconducting Strips  

SciTech Connect (OSTI)

The phase difference between the banks of an edge-type planar Josephson junction crossing the narrow thin-film strip depends on wether or not vortices are present in the junction banks. For a vortex close to the junction this effect has been seen by Golod, Rydh, and Krasnov [Phys. Rev. Lett. 104, 227003 (2010)], who showed that the vortex may turn the junction into ? type. It is shown here that even if the vortex is far away from the junction, it still changes the 0 junction to a ? junction when situated close to the strip edges. Within the approximation used, the effect is independent of the vortex-junction separation, a manifestation of the topology of the vortex phase which extends to macroscopic distances of superconducting coherence.

Kogan, V. G. [Ames Laboratory; Mints, R. G. [Tel Aviv University

2014-01-31T23:59:59.000Z

128

Determining the Mechanisms of Cationic Contamination Affecting PEMFCs Using a Strip Cell Configuration  

SciTech Connect (OSTI)

Cationic contamination of polymer electrolyte fuel cells has been shown to cause serious performance degradation but the exact mechanisms of this degradation are not fully understood. A strip cell configuration was devised to study the mechanisms of performance degradation due to cationic contamination by changing the time and length scales of traditional fuel cells while providing a suitable reference electrode. This 'strip cell' configuration utilizes traditional Nafion{reg_sign} membranes in an in-plane configuration with electrodes painted on each end. Using this cell it was determined that cationic contaminants collect near the cathode of the fuel cell under load and that this profile leads to increased losses primarily in the cathode region. These results can be directly related to performance losses in a typical PEMFC contaminated by foreign cations.

Kienitz, B. L.; Zawodzinski, T. A.; Pivovar, B. S.; Garzon, F. H.

2008-01-01T23:59:59.000Z

129

Stripping of organic compounds from wastewater as an auxiliary fuel of regenerative thermal oxidizer  

Science Journals Connector (OSTI)

Organic solvents with different volatilities are widely used in various processes and generate air and water pollution problems. In the cleaning processes of electronics industries, most volatile organic compounds (VOCs) are vented to air pollution control devices while most non-volatile organic solvents dissolve in the cleaning water and become the major sources of COD in wastewater. Discharging a high-COD wastewater stream to wastewater treatment facility often disturbs the treatment performance. A pretreatment of the high-COD wastewater is therefore highly desirable. This study used a packed-bed stripping tower in combination with a regenerative thermal oxidizer to remove the COD in the wastewater from a printed circuit board manufacturing process and to utilize the stripped organic compounds as the auxiliary fuel of the RTO. The experimental results showed that up to 45% of the COD could be removed and 66% of the RTO fuel could be saved by the combined treatment system.

Meng-Wen Chang; Jia-Ming Chern

2009-01-01T23:59:59.000Z

130

Dynamic underground stripping: steam and electric heating for in situ decontamination of soils and groundwater  

DOE Patents [OSTI]

A dynamic underground stripping process removes localized underground volatile organic compounds from heterogeneous soils and rock in a relatively short time. This method uses steam injection and electrical resistance heating to heat the contaminated underground area to increase the vapor pressure of the contaminants, thus speeding the process of contaminant removal and making the removal more complete. The injected steam passes through the more permeable sediments, distilling the organic contaminants, which are pumped to the surface. Large electrical currents are also applied to the contaminated area, which heat the impermeable subsurface layers that the steam has not penetrated. The condensed and vaporized contaminants are withdrawn by liquid pumping and vacuum extraction. The steam injection and electrical heating steps are repeated as necessary. Geophysical imaging methods can be used to map the boundary between the hot, dry, contamination-free underground zone and the cool, damp surrounding areas to help monitor the dynamic stripping process. 4 figs.

Daily, W.D.; Ramirez, A.L.; Newmark, R.L.; Udell, K.; Buetnner, H.M.; Aines, R.D.

1995-09-12T23:59:59.000Z

131

Multimedia sampling for dioxin at a strip mine reclaimed with sludge from bleached kraft wastewater treatment  

SciTech Connect (OSTI)

This paper reports that mead conducted a two-year dioxin testing program on strip-mined land being reclaimed with sludge from the wastewater treatment plant of its bleached kraft mill. Many different samples were analyzed for both 2,3,7,8-TCDD (or dioxin) and 2,3,7,8-TCDF (or furan). The study included biodiversity studies to determine the total environmental impact. The results indicate that the sludge is an excellent reclamation material that improves the biodiversity at the site. The tracer dioxin in the sludge does not exhibit any significant migration or bioavailability when used for reclaiming strip mines. These findings differ from assumptions sometimes used in assessing the environmental risks of dioxin.

Krouskop, D.J.; Ayers, K.C. (Metal Corp. (US)); Proctor, J.L. (Ohio Univ., Chillicothe, OH (US))

1991-04-01T23:59:59.000Z

132

Stripping ethanol from ethanol-blended fuels for use in NO.sub.x SCR  

DOE Patents [OSTI]

A method to use diesel fuel alchohol micro emulsions (E-diesel) to provide a source of reductant to lower NO.sub.x emissions using selective catalytic reduction. Ethanol is stripped from the micro emulsion and entered into the exhaust gasses upstream of the reducing catalyst. The method allows diesel (and other lean-burn) engines to meet new, lower emission standards without having to carry separate fuel and reductant tanks.

Kass, Michael Delos (Oak Ridge, TN); Graves, Ronald Lee (Knoxville, TN); Storey, John Morse Elliot (Oak Ridge, TN); Lewis, Sr., Samuel Arthur (Andersonville, TN); Sluder, Charles Scott (Knoxville, TN); Thomas, John Foster (Powell, TN)

2007-08-21T23:59:59.000Z

133

NETL: Development of a Novel Gas Pressurized Stripping Process-Based  

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

Development of a Novel Gas Pressurized Stripping Process-Based Technology for CO2 Capture Development of a Novel Gas Pressurized Stripping Process-Based Technology for CO2 Capture Project No.: DE-FE0007567 Carbon Capture Scientific is developing and testing a novel, proprietary, Gas Pressurized Stripping (GPS) process-based technology for CO2 capture from post-combustion flue gases. GPS process-based technology has many advantages. For the solvent based process it will be able to: Reduce the energy penalty associated with solvent regeneration Increase the CO2 desorption pressure Integrate CO2 capture and compression into one step Reduce CO2 compression needs Reduce solvent degradation These advantages could potentially eliminate CO2 compression entirely, hence reducing the total parasitic power load of a CO2 capture process to about 0.14kWh/kgCO2. This power load is a 60 percent reduction compared to the baseline case of 0.38kWh/kgCO2. The economic impact of this parasitic power reduction is a reduction in the incremental cost of electricity (COE) by about 21 mills/kWh.

134

Electroslag surfacing of steel shafting with Ni alloy 625 and 70Cu-30Ni strip  

SciTech Connect (OSTI)

A comprehensive study of electroslag surfacing (ESS) of steel with Ni Alloy 625 and 70Cu-30Ni strip electrodes was conducted to establish the feasibility of replacing forged bearing sleeves on propulsion shafting with integral weld surfacing. The base material was MIL-S-23284, Class 1 steel in the form of 41--66 cm (16--26 in.) diameter shafting and 76 mm (3 in.) thick flat plate. All ESS was carried out at a heat input level of approximately 5.9kJ/mm (150 kJ/in.) using 30 x 0.5 mm (1.2 x 0.02 in.) strip electrodes. Assessments of mechanical properties and microstructure of Ni Alloy 625 surfacing and 70Cu-30Ni surfacing were conducted to establish the structure-property relationships in these complex alloy systems. In addition, a solidification cracking test was developed to determine the relative cracking susceptibilities of these strip surfacing alloys. Although the Ni Alloy 625 surfacing contained small islands of interdendritic MC type carbides and Laves phase, the mechanical properties of this surfacing were satisfactory. The 70Cu-30Ni surfacing required a buttering layer of 30Cu-70Ni or pure Ni to prevent solidification cracking. The inherent ductility-dip sensitivity of 70Cu-30Ni surfacing was overcome by the development of a suitable ESS procedure.

Devletian, J.H.; Gao, Y.P.; Wood, W.E. [Oregon Graduate Inst. of Science and Technology, Portland, OR (United States)

1996-12-31T23:59:59.000Z

135

Problems Found Using a Radon Stripping Algorithm for Retrospective Assessment of Air Filter Samples  

SciTech Connect (OSTI)

An evaluation of a large number of air sample filters was undertaken using a commercial alpha and beta spectroscopy system employing a passive implanted planar silicon (PIPS) detector. Samples were only measured after air flow through the filters had ceased. Use of a commercial radon stripping algorithm was implemented to discriminate anthropogenic alpha activity on the filters from the radon progeny. When uncontaminated air filters were evaluated, the results showed that there was a time-dependent bias in both average estimates and measurement dispersion of anthropogenic activity estimates with the relative bias being small compared to the dispersion, indicating that the system would not give false positive indications for an appropriately set decision level. By also measuring environmental air sample filters simultaneously with electroplated alpha filters, use of the radon stripping algorithm demonstrated a number of substantial unexpected deviations from calibrated values indicating that the system would give false negative indications. Use of the current algorithm is, therefore, not recommended for general assay applications. Use of the PIPS detector should only be utilized for gross counting without appropriate modifications to the curve-fitting algorithm. As a screening method, the radon stripping algorithm might be expected to see elevated alpha activities on air sample filters (not due to radon progeny) around the 200 disintegrations per minute level.

Robert Hayes

2008-04-01T23:59:59.000Z

136

Use of a Radon Stripping Algorithm for Retrospective Assessment of Air Filter Samples  

SciTech Connect (OSTI)

An evaluation of a large number of air sample filters was undertaken using a commercial alpha and beta spectroscopy system employing a passive implanted planar silicon (PIPS) detector. Samples were only measured after air flow through the filters had ceased. Use of a commercial radon stripping algorithm was implemented to discriminate anthropogenic alpha and beta activity on the filters from the radon progeny. When uncontaminated air filters were evaluated, the results showed that there was a time-dependent bias in both average estimates and measurement dispersion with the relative bias being small compared to the dispersion. By also measuring environmental air sample filters simultaneously with electroplated alpha and beta sources, use of the radon stripping algorithm demonstrated a number of substantial unexpected deviations. Use of the current algorithm is therefore not recommended for assay applications and so use of the PIPS detector should only be utilized for gross counting without appropriate modifications to the curve fitting algorithm. As a screening method, the radon stripping algorithm might be expected to see elevated alpha and beta activities on air sample filters (not due to radon progeny) around the 200 dpm level.

Robert Hayes

2009-01-23T23:59:59.000Z

137

Improved Magnetic Field Generation Efficiency and Higher Temperature Spheromak Plasmas  

SciTech Connect (OSTI)

New understanding of the mechanisms governing the observed magnetic field generation limits on the sustained spheromak physics experiment has been obtained. Extending the duration of magnetic helicity injection during the formation of a spheromak and optimizing the ratio of injected current to bias flux produce higher magnetic field plasmas with record spheromak electron temperatures. To explore magnetic field buildup efficiency limits, the confinement region geometry was varied resulting in improved field buildup efficiencies.

Wood, R D; Hill, D N; McLean, H S; Hooper, E B; Hudson, B F; Moller, J M; Romero-Talamas, C A

2008-09-15T23:59:59.000Z

138

Improved magnetic field generation efficiency and higher temperature spheromak plasmas  

Science Journals Connector (OSTI)

New understanding of the mechanisms governing the observed magnetic field generation limits on the sustained spheromak physics experiment has been obtained. Extending the duration of magnetic helicity injection during the formation of a spheromak and optimizing the ratio of injected current to bias flux produce higher magnetic field plasmas with record spheromak electron temperatures. To explore magnetic field buildup efficiency limits, the confinement region geometry was varied resulting in improved field buildup efficiencies.

R.D. Wood; D.N. Hill; H.S. McLean; E.B. Hooper; B.F. Hudson; J.M. Moller; C.A. Romero-Talamás

2009-01-01T23:59:59.000Z

139

Abundance Ratios in Early-Type Galaxies  

E-Print Network [OSTI]

Although evidence is accumulating that abundance ratios in galaxies are often non-solar, they are far from understood. I resume the current evidence for non-solar abundance ratios, supplementing the recent review by Worthey (1998) with some new results. It appears that the Mg/Fe abundance ratio only depends on the mass of the galaxy, not on the formation time-scale. For massive galaxies [Mg/Fe] > 0, while small galaxies show solar abundance ratios. Information about abundances of other element is scarce, but new evidence is given that [Ca/Fe] is solar, or slightly lower than solar, contrary to what is expected for an alpha-element.

Reynier Peletier

1999-04-21T23:59:59.000Z

140

Bulges of disk galaxies at intermediate redshifts. I. Samples with and without bulges in the Groth Strip Survey  

E-Print Network [OSTI]

We aim to define a sample of intermediate-z disk galaxies harbouring central bulges, and a complementary sample of disk galaxies without measurable bulges. We intend to provide colour profiles for both samples, as well as measurements of nuclear, disk, and global colours, which may be used to constrain the relative ages of bulges and disks. We select a diameter-limited sample of galaxies in images from the HST/WFPC2 Groth Strip survey, which is divided into two subsamples of higher and lower inclination to assess the role of dust in the measures quantities. Mergers are visually identified and excluded. We take special care to control the pollution by ellipticals. The bulge sample is defined with a criterion based on nuclear surface brightness excess over the inward extrapolation of the exponential law fitted to the outer regions of the galaxies. We extract colour profiles on the semi-minor axis least affected by dust in the disk, and measure nuclear colours at 0.85 kpc from the centre over those profiles. Disk colours are measured on major axis profiles; global colours are obtained from 2.6"-diameter apertures. We obtain a parent sample containing 248 galaxies with known redshifts, spectroscopic or photometric, spanning 0.1 < z < 1.2. The bulge subsample comprises 54 galaxies (21.8% of the total), while the subsample with no measureable bulges is 55.2% of the total (137 galaxies). The remainder (23%) is composed of mergers. We list nuclear, disk, and global colours (observed and restframe) and magnitudes (apparent and absolute), as well as galaxy colour gradients for the samples with and without bulges. We also provide images, colour maps, plots of spectral energy distributions, major-axis surface brightness profiles, and minor-axis colour profiles for both samples.

L. Dominguez-Palmero; M. Balcells; P. Erwin; M. Prieto; D. Cristobal-Hornillos; M. C. Eliche-Moral; R. Guzman

2008-07-20T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

THE UNIVERSITY OF SHEFFIELD CATALYST HIGHER EDUCATION  

E-Print Network [OSTI]

Page | 1 THE UNIVERSITY OF SHEFFIELD & CATALYST HIGHER EDUCATION (SHEFFIELD) PLC. UNIVERSITY of Sheffield / Catalyst Higher Education (Sheffield) plc Project Co Accommodation: Accommodation / Catalyst Higher Education (Sheffield) plc LLFM: Lend Lease Facilities Management Ltd Project Co: Catalyst

Dixon, Peter

142

Limits on the Boron Isotopic Ratio in HD 76932  

E-Print Network [OSTI]

Data in the 2090 A B region of HD 76932 have been obtained at high S/N using the HST GHRS echelle at a resolution of 90,000. This wavelength region has been previously identified as a likely candidate for observing the B11/B10 isotopic splitting. The observations do not match a calculated line profile extremely well at any abundance for any isotopic ratio. If the B abundance previously determined from observations at 2500 A is assumed, the calculated line profile is too weak, indicating a possible blending line. Assuming that the absorption at 2090 A is entirely due to boron, the best-fit total B abundance is higher than but consistent with that obtained at 2500 A, and the best-fit isotopic ratio (B11/B10) is in the range ~10:1 to ~4:1. If the absorption is not entirely due to B and there is an unknown blend, the best-fit isotopic ratio may be closer to 1:1. Future observations of a similar metal-poor star known to have unusually low B should allow us to distinguish between these two possibilities. The constraints that can be placed on the isotopic ratio based on comparisons with similar observations of HD 102870 and HD 61421 (Procyon) are also discussed.

L. M. Rebull; D. K. Duncan; S. Johansson; J. Thorburn; B. Fields

1998-07-13T23:59:59.000Z

143

Sample Results From The Extraction, Scrub, And Strip Test For The Blended NGS Solvent  

SciTech Connect (OSTI)

This report summarizes the results of the extraction, scrub, and strip testing for the September 2013 sampling of the Next Generation Solvent (NGS) Blended solvent from the Modular Caustic Side-Solvent Extraction Unit (MCU) Solvent Hold Tank. MCU is in the process of transitioning from the BOBCalixC6 solvent to the NGS Blend solvent. As part of that transition, MCU has intentionally created a blended solvent to be processed using the Salt Batch program. This sample represents the first sample received from that blended solvent. There were two ESS tests performed where NGS blended solvent performance was assessed using either the Tank 21 material utilized in the Salt Batch 7 analyses or a simulant waste material used in the V-5/V-10 contactor testing. This report tabulates the temperature corrected cesium distribution, or DCs values, step recovery percentage, and actual temperatures recorded during the experiment. This report also identifies the sample receipt date, preparation method, and analysis performed in the accumulation of the listed values. The calculated extraction DCs values using the Tank 21H material and simulant are 59.4 and 53.8, respectively. The DCs values for two scrub and three strip processes for the Tank 21 material are 4.58, 2.91, 0.00184, 0.0252, and 0.00575, respectively. The D-values for two scrub and three strip processes for the simulant are 3.47, 2.18, 0.00468, 0.00057, and 0.00572, respectively. These values are similar to previous measurements of Salt Batch 7 feed with lab-prepared blended solvent. These numbers are considered compatible to allow simulant testing to be completed in place of actual waste due to the limited availability of feed material.

Washington, A. L. II; Peters, T. B.

2014-03-03T23:59:59.000Z

144

Thermal photons to dileptons ratio at LHC  

E-Print Network [OSTI]

It is shown that the ratio of transverse momentum (p_T) distribution of thermal photons to dileptons produced in heavy ion collisions reaches a plateau above p_T=1 GeV. We argue that the value of the ratio in the plateau region can be used to estimate the initial temperature.

Jajati K. Nayak; Jan-e Alam; Sourav Sarkar; Bikash Sinha

2007-05-24T23:59:59.000Z

145

Extended Kalman Filter Based Neural Networks Controller For Hot Strip Rolling mill  

SciTech Connect (OSTI)

The present paper deals with the application of an Extended Kalman filter based adaptive Neural-Network control scheme to improve the performance of a hot strip rolling mill. The suggested Neural Network model was implemented using Bayesian Evidence based training algorithm. The control input was estimated iteratively by an on-line extended Kalman filter updating scheme basing on the inversion of the learned neural networks model. The performance of the controller is evaluated using an accurate model estimated from real rolling mill input/output data, and the usefulness of the suggested method is proved.

Moussaoui, A. K. [Electrical Engineering Laboratory of Guelma (LGEG), BP.401, University of Guelma, 24000 (Algeria); Abbassi, H. A.; Bouazza, S. [Universite Badji Mokhtar BP 12--23000-Annaba Algerie (Algeria)

2008-06-12T23:59:59.000Z

146

DISCOVERY OF 'WARM DUST' GALAXIES IN CLUSTERS AT z {approx} 0.3: EVIDENCE FOR STRIPPING OF COOL DUST IN THE DENSE ENVIRONMENT?  

SciTech Connect (OSTI)

Using far-infrared imaging from the 'Herschel Lensing Survey', we derive dust properties of spectroscopically confirmed cluster member galaxies within two massive systems at z {approx} 0.3: the merging Bullet Cluster and the more relaxed MS2137.3-2353. Most star-forming cluster sources ({approx}90%) have characteristic dust temperatures similar to local field galaxies of comparable infrared (IR) luminosity (T{sub dust} {approx} 30 K). Several sub-luminous infrared galaxy (LIRG; L{sub IR} < 10{sup 11} L{sub Sun }) Bullet Cluster members are much warmer (T{sub dust} > 37 K) with far-infrared spectral energy distribution (SED) shapes resembling LIRG-type local templates. X-ray and mid-infrared data suggest that obscured active galactic nuclei do not contribute significantly to the infrared flux of these 'warm dust' galaxies. Sources of comparable IR luminosity and dust temperature are not observed in the relaxed cluster MS2137, although the significance is too low to speculate on an origin involving recent cluster merging. 'Warm dust' galaxies are, however, statistically rarer in field samples (>3{sigma}), indicating that the responsible mechanism may relate to the dense environment. The spatial distribution of these sources is similar to the whole far-infrared bright population, i.e., preferentially located in the cluster periphery, although the galaxy hosts tend toward lower stellar masses (M{sub *} < 10{sup 10} M{sub Sun }). We propose dust stripping and heating processes which could be responsible for the unusually warm characteristic dust temperatures. A normal star-forming galaxy would need 30%-50% of its dust removed (preferentially stripped from the outer reaches, where dust is typically cooler) to recover an SED similar to a 'warm dust' galaxy. These progenitors would not require a higher IR luminosity or dust mass than the currently observed normal star-forming population.

Rawle, T. D.; Rex, M.; Egami, E.; Walth, G.; Pereira, M. J. [Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721 (United States); Chung, S. M.; Gonzalez, A. H. [Department of Astronomy, University of Florida, Gainesville, FL 32611-2055 (United States); Perez-Gonzalez, P. G. [Departamento de Astrofisica, Facultad de CC. Fisicas,Universidad Complutense de Madrid, E-28040 Madrid (Spain); Smail, I. [Institute for Computational Cosmology, Durham University, South Road, Durham DH1 3LE (United Kingdom); Altieri, B.; Valtchanov, I. [Herschel Science Centre, ESAC, ESA, P.O. Box 78, Villanueva de la Canada, E-28691 Madrid (Spain); Appleton, P.; Fadda, D. [IPAC, California Institute of Technology, Pasadena, CA 91125 (United States); Alba, A. Berciano [ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo (Netherlands); Blain, A. W. [Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH (United Kingdom); Dessauges-Zavadsky, M. [Observatoire de Geneve, Universite de Geneve, 51 Ch. des Maillettes, CH-1290 Sauverny (Switzerland); Van der Werf, P. P. [Sterrewacht Leiden, Leiden University, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Zemcov, M., E-mail: trawle@as.arizona.edu [Department of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)

2012-09-10T23:59:59.000Z

147

The blue-edge problem of the V1093 Her instability strip revisited using evolutionary models with atomic diffusion  

E-Print Network [OSTI]

We have computed a new grid of evolutionary subdwarf B star (sdB) models from the start of central He burning, taking into account atomic diffusion due to radiative levitation, gravitational settling, concentration diffusion, and thermal diffusion. We have computed the non-adiabatic pulsation properties of the models and present the predicted p-mode and g-mode instability strips. In previous studies of the sdB instability strips, artificial abundance enhancements of Fe and Ni were introduced in the pulsation driving layers. In our models, the abundance enhancements of Fe and Ni occur naturally, eradicating the need to use artificial enhancements. We find that the abundance increases of Fe and Ni were previously underestimated and show that the instability strip predicted by our simulations solves the so-called blue edge problem of the subdwarf B star g-mode instability strip. The hottest known g-mode pulsator, KIC 10139564, now resides well within the instability strip {even when only modes with low spherical...

Bloemen, S; Aerts, C; Dupret, M A; Østensen, R H; Degroote, P; Müller-Ringat, E; Rauch, T

2014-01-01T23:59:59.000Z

148

Lost Mountain: a year in the vanishing wilderness; radical strip mining and the devastation of Appalachia  

SciTech Connect (OSTI)

The mountains of Appalachia are home to one of the great forests of the world - they predate the Ice Age and scientists refer to them as the 'rainforests' of North America for their remarkable density and species diversity. These mountains also hold the mother lode of American coal, and the coal mining industry has long been the economic backbone for families in a region hard-pressed for other job opportunities. But recently, a new type of mining has been introduced -'radical strip mining', aka 'mountaintop removal'- in which a team employing no more than ten men and some heavy machinery literally blast off the top of a mountain, dump it in the valley below, and scoop out the coal. Erik Reece chronicles the year he spent witnessing the systematic decimation of a single mountain, aptly named 'Lost Mountain'. A native Kentuckian and the son of a coal worker, Reece makes it clear that strip mining is neither a local concern nor a radical contention, but a mainstream crisis that encompasses every hot-button issue - from corporate hubris and government neglect, to class conflict and poisoned groundwater, to irrevocable species extinction and landscape destruction. Published excerpts of Lost Mountain are already driving headlines and legislative action in Kentucky.

Reece, E.

2007-02-15T23:59:59.000Z

149

Strip2CubeFace user%3CU%2B2019%3Es manual.  

SciTech Connect (OSTI)

Commercial Off The Shelf (COTS) software for producing linked virtual tours based on 360 degree panoramas are becoming more and more available. However, the best current products for taking the images, stitching them into 360 degree panoramas, and then linking them together into complex virtual tours require different and incompatible input and output formats. This program is designed to bridge the gap between the iPix Interactive Studio export format, which consists of a single JPEG with the six faces of a cube connected horizontally, with the six individual JPEGs needed to be imported into Panotour Pro software. This report describes how to use the software program Strip2CubeFace, which takes the cube-strip JPEG exported from iPix Studio and coverts it into six JPEGs representing the six cube faces that Panotour Pro imports. As such, it represents a necessary link between the two COTS software programs key to making virtual tours quickly and easily. It becomes one member of the suite of software programs known as %E2%80%9CRaPP-TOURS%E2%80%9D or Rapid Processing of PanoTours Software necessary to simulate managed access and other permission requesting arms control-type training exercises.

Forden, Geoffrey Ethan

2013-03-01T23:59:59.000Z

150

Inspection of surface defects in copper strip using multivariate statistical approach and SVM  

Science Journals Connector (OSTI)

The surface quality would directly influence the capability and quality of the final product, but there is little domestic research focused on surface defects inspection for copper strip based on automated visual inspection. According to the gradual change of intensity levels of copper strips surface defect, a defect detection algorithm is proposed using wavelet-based multivariate statistical analysis. First, the image is divided into several sub-images, namely statistical units, and then each unit is further decomposed into multiple wavelet processing units. Then each wavelet processing unit is decomposed by 1D db4 wavelet function. Then, multivariate statistics of Hotelling T² are applied to distinguish the existence of defects and classify the defects using support vector machine (SVM). During SVM design, the authors used cross-validation method to get the best parameters and then used the parameters to train and test the samples. Finally, the defect detection performance of the proposed approach is compared with the traditional method based on greyscale. Experimental results demonstrate that the proposed method has better performance on identification, especially its application in the ripple defects can achieve a 96.7% probability of detecting the existence of micro defects, which was poor in common algorithms.

Xue-Wu Zhang; Fang Gong; Li-Zhong Xu

2012-01-01T23:59:59.000Z

151

The Flying Spaghetti Monster: Impact of magnetic fields on ram pressure stripping in disk galaxies  

E-Print Network [OSTI]

Ram pressure stripping can remove significant amounts of gas from galaxies in clusters, and thus has a large impact on the evolution of cluster galaxies. Recent observations have shown that key properties of ram-pressure stripped tails of galaxies, such as their width and structure, are in conflict with predictions by simulations. To increase the realism of existing simulations, we simulated for the first time a disk galaxy exposed face-on to a uniformly magnetized wind including radiative cooling and self-gravity of the gas. We find that magnetic fields have a strong effect on the morphology of the gas in the tail of the galaxy. While in the purely hydrodynamical case the tail is very clumpy, the MHD case shows very filamentary structures in the tail. The filaments can be strongly supported by magnetic pressure and, wherever this is the case, the magnetic fields vectors tend to be aligned with the filaments. Interestingly, we observe the formation of two dominant magnetized density tails behind the galaxy re...

Ruszkowski, M; Lee, D; Shin, M -S

2012-01-01T23:59:59.000Z

152

Isotope ratio determination in boron analysis  

Science Journals Connector (OSTI)

Traditionally, boron (B) isotope ratios have been determined using thermal ionization...+, Cs+, or O-...for analyte ionization. TIMS can be used in negative or positive ion modes with high sensitivity and precisi...

Ram N. Sah; Patrick H. Brown

1998-12-01T23:59:59.000Z

153

Fuel Equivalence Ratio Imaging for Methane Jets  

Science Journals Connector (OSTI)

A 2-D fuel/oxygen equivalence ratio imaging system has been developed. The technique exploits the efficient quenching of the fluorescence of organic molecules by molecular oxygen in...

Ni, T Q; Melton, L A

1993-01-01T23:59:59.000Z

154

Development of nanodiamond foils for H- stripping to Support the Spallation Neutron Source (SNS) using hot filament chemical vapor deposition  

SciTech Connect (OSTI)

Thin diamond foils are needed in many particle accelerator experiments regarding nuclear and atomic physics, as well as in some interdisciplinary research. Particularly, nanodiamond texture is attractive for this purpose as it possesses a unique combination of diamond properties such as high thermal conductivity, mechanical strength and high radiation hardness; therefore, it is a potential material for energetic ion beam stripper foils. At the ORNL Spallation Neutron Source (SNS), the installed set of foils must be able to survive a nominal five-month operation period, without the need for unscheduled costly shutdowns and repairs. Thus, a small foil about the size of a postage stamp is critical to the operation of SNS and similar sources in U.S. laboratories and around the world. We are investigating nanocrystalline, polycrystalline and their admixture films fabricated using a hot filament chemical vapor deposition (HFCVD) system for H- stripping to support the SNS at Oak Ridge National Laboratory. Here we discuss optimization of process variables such as substrate temperature, process gas ratio of H2/Ar/CH4, substrate to filament distance, filament temperature, carburization conditions, and filament geometry to achieve high purity diamond foils on patterned silicon substrates with manageable intrinsic and thermal stresses so that they can be released as free standing foils without curling. An in situ laser reflectance interferometry tool (LRI) is used for monitoring the growth characteristics of the diamond thin film materials. The optimization process has yielded free standing foils with no pinholes. The sp3/sp2 bonds are controlled to optimize electrical resistivity to reduce the possibility of surface charging of the foils. The integrated LRI and HFCVD process provides real time information on the growth of films and can quickly illustrate growth features and control film thickness. The results are discussed in the light of development of nanodiamond foils that will be able to withstand a few MW proton beam and hopefully will be able to be used after possible future upgrades to the SNS to greater than a 3MW beam.

Vispute, R D [Blue Wave Semiconductors; Ermer, Henry K [Blue Wave Semiconductors; Sinsky, Phillip [Blue Wave Semiconductors; Seiser, Andrew [Blue Wave Semiconductors; Shaw, Robert W [ORNL; Wilson, Leslie L [ORNL

2014-01-01T23:59:59.000Z

155

Universal viscosity to entropy density ratio from entanglement  

SciTech Connect (OSTI)

We present evidence that the universal Kovtun-Son-Starinets shear viscosity to entropy density ratio of 1/4{pi} can be associated with a Rindler causal horizon in flat spacetime. Since there is no known holographic (gauge/gravity) duality for this spacetime, a natural microscopic explanation for this viscosity is in the peculiar properties of quantum entanglement. In particular, it is well known that the Minkowski vacuum state is a thermal state and carries an area entanglement entropy density in the Rindler spacetime. Based on the fluctuation-dissipation theorem, we expect a similar notion of viscosity arising from vacuum fluctuations. Therefore, we propose a holographic Kubo formula in terms of a two-point function of the stress tensor of matter fields in the bulk. We calculate this viscosity assuming a minimally coupled scalar field theory and find that the ratio with respect to the entanglement entropy density is exactly 1/4{pi} in four dimensions. The issues that arise in extending this result to nonminimally coupled scalar fields, higher spins, and higher dimensions provide interesting hints about the relationship between entanglement entropy and black hole entropy.

Chirco, Goffredo; Eling, Christopher; Liberati, Stefano [SISSA, Via Bonomea 265, 34136 Trieste (Italy) and INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste (Italy)

2010-07-15T23:59:59.000Z

156

Limits on the Boron Isotopic Ratio in HD 76932  

E-Print Network [OSTI]

Data in the 2090 A B region of HD 76932 have been obtained at high S/N using the HST GHRS echelle at a resolution of 90,000. This wavelength region has been previously identified as a likely candidate for observing the B11/B10 isotopic splitting. The observations do not match a calculated line profile extremely well at any abundance for any isotopic ratio. If the B abundance previously determined from observations at 2500 A is assumed, the calculated line profile is too weak, indicating a possible blending line. Assuming that the absorption at 2090 A is entirely due to boron, the best-fit total B abundance is higher than but consistent with that obtained at 2500 A, and the best-fit isotopic ratio (B11/B10) is in the range ~10:1 to ~4:1. If the absorption is not entirely due to B and there is an unknown blend, the best-fit isotopic ratio may be closer to 1:1. Future observations of a similar metal-poor star known to have unusually low B should allow us to distinguish between these two possibilities. The constr...

Rebull, L M; Johansson, S; Thorburn, J; Fields, B

1998-01-01T23:59:59.000Z

157

The E2/M1 ratio in {Delta} photoproduction  

SciTech Connect (OSTI)

The properties of the transition from the nucleon to the {Delta}(1232) serve as a benchmark for models of nucleon structure. To first order, N {r_arrow} {Delta} photo-excitation is dominated by a simple M1 quark spin-flip transition. At higher order, small L = 2 components in the N and {Delta} wavefunctions allow this excitation to proceed via an electric quadrupole transition. Since Nucleon models differ greatly on the mechanisms used to generate these L = 2 components,, the ratio of E2/M1 transitions (EMR) provides a sensitive test for structure models. Here, new high-precision measurements of p({rvec {gamma}}, {pi}) and p({rvec {gamma}}, {gamma}) cross sections and beam asymmetries have been combined with other polarization ratios in a simultaneous analysis of both reactions. Compton scattering has provided two important new constraints on the photo-pion amplitude. The E2/M1 mixing ratio for the N {r_arrow} {Delta} transition extracted from this analysis is EMR = {minus}3.0% {+-} 0.3 (stat+sys) {+-} 0.2 (model).

Sandorfi, A.M. [Brookhaven National Lab., Upton, NY (United States). Physics Dept.; Blanpied, G. [Univ. of South Carolina, Columbia, SC (United States). Dept. of Physics; Blecher, M. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Physics Dept.] [and others; LEGS Collaboration

1997-08-01T23:59:59.000Z

158

Group velocities in coplanar strip transmission lines on Si and Si/SiO2 /Si substrates measured using differential electro-optic sampling  

E-Print Network [OSTI]

Group velocities in coplanar strip transmission lines on Si and Si/SiO2 /Si substrates measured 1996; accepted for publication 26 August 1996 The group velocities in coplanar strip transmission lines-9 Velocity measurements have been previously carried out for coplanar transmission lines on a variety

159

Fraud in For-Profit Higher Education  

Science Journals Connector (OSTI)

The rising prominence of for-profit higher education in recent years has been impressive, as these organizations have come to play a more prominent role in American higher education. Nonetheless, for-profits c...

William Beaver

2012-05-01T23:59:59.000Z

160

Higher Power Energy LLC | Open Energy Information  

Open Energy Info (EERE)

Higher Power Energy LLC Higher Power Energy LLC Jump to: navigation, search Name Higher Power Energy, LLC Place Flower Mound, Texas Zip 78028 Sector Renewable Energy, Wind energy Product Higher Power Energy is focused on the development and management of renewable wind energy across North America. References Higher Power Energy, LLC[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Higher Power Energy, LLC is a company located in Flower Mound, Texas . References ↑ "Higher Power Energy, LLC" Retrieved from "http://en.openei.org/w/index.php?title=Higher_Power_Energy_LLC&oldid=346535" Categories: Clean Energy Organizations Companies Organizations Stubs What links here

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161

Atomic force microscope cantilever spring constant evaluation for higher mode oscillations: A kinetostatic method  

SciTech Connect (OSTI)

Our previous study of the particle mass sensor has shown a large ratio (up to thousands) between the spring constants of a rectangular cantilever in higher mode vibration and at the static bending or natural mode vibration. This has been proven by us through the derived nodal point position equation. That solution is good for a cantilever with the free end in noncontact regime and the probe shifted from the end to an effective section and contacting a soft object. Our further research shows that the same nodal position equation with the proper frequency equations may be used for the same spring constant ratio estimation if the vibrating at higher mode cantilever's free end has a significant additional mass clamped to it or that end is in permanent contact with an elastic or hard measurand object (reference cantilever). However, in the latter case, the spring constant ratio is much smaller (in tens) than in other mentioned cases at equal higher (up to fourth) vibration modes. We also present the spring constant ratio for a vibrating at higher eigenmode V-shaped cantilever, which is now in wide use for atomic force microscopy. The received results on the spring constant ratio are in good (within a few percent) agreement with the theoretical and experimental data published by other researchers. The knowledge of a possible spring constant transformation is important for the proper calibration and use of an atomic force microscope with vibrating cantilever in the higher eigenmodes for measurement and imaging with enlarged resolution.

Tseytlin, Yakov M. [Instrument Society of America, 20 Randall Street, Apt. 5G, Providence, Rhode Island 02904 (United States)

2008-02-15T23:59:59.000Z

162

States & Energy Efficiency in Higher Education  

Broader source: Energy.gov [DOE]

This presentation, given through the DOE's Technical Assitance Program (TAP), provides information on States & Energy Efficiency in Higher Education.

163

Heat transfer and pressure drop correlations for the rectangular offset strip fin compact heat exchanger  

Science Journals Connector (OSTI)

The development of thermal-hydraulic design tools for rectangular offset strip fin compact heat exchangers and the associated convection process are delineated. On the basis of current understanding of the physical phenomena and enhancement mechanisms, existing empirical f and j data for actual cores are reanalyzed. The asymptotic behavior of the data in the deep laminar and fully turbulent flow regimes is identified. The respective asymptotes for f and j are shown to be correlated by power law expressions in terms of Re and the dimensionless geometric parameters ?, ?, and ?. Finally, rational design equations for f and j are presented in the form of single continuous expressions covering the laminar, transition, and turbulent flow regimes.

Raj M. Manglik; Arthur E. Bergles

1995-01-01T23:59:59.000Z

164

Effect of the Doping Ion on the Electrical Response of a Free-Standing Polypyrrole Strip Subjected to Different Preloads  

E-Print Network [OSTI]

, a degeneration of the electrical energy vs the external stress was measured, which would seriously limit the useEffect of the Doping Ion on the Electrical Response of a Free-Standing Polypyrrole Strip Subjected they are immersed in aqueous solutions with different doping ions. By plotting the electrical energy associated

Otero, Toribio Fernández

165

Lab-on-a-Chip Sensor with Evaporated Bismuth Film Electrode for Anodic Stripping Voltammetry of Zinc  

E-Print Network [OSTI]

Lab-on-a-Chip Sensor with Evaporated Bismuth Film Electrode for Anodic Stripping Voltammetry voltammetry, Zinc, Lab-on-a-chip sensor, Dopamine, Evaporated Bi film electrode DOI: 10.1002/elan.201300349 1 negative potential window. Most importantly, it is much less toxic than mercury and is environmentally

Papautsky, Ian

166

Model calculations of the response of CZT strip detectors E. Kalemci a , J. L. Matteson a , R. T. Skelton a  

E-Print Network [OSTI]

to achieve this objective. 2 (For more information on the objectives and status of high energy astronomy, see and optimized strip widths and gaps to improve energy resolution. A ``steering electrode'' is employed between on the electrodes has been developed to allow us to better understand these types of detectors and improve

Kalemci, Emrah

167

Progress in the development of large area sub-millimeter resolution CdZnTe strip detectors  

SciTech Connect (OSTI)

The authors report progress in ongoing measurements of the performance of a sub-millimeter pitch CdZnTe strip detector developed as a prototype for astronomical instruments. Strip detectors can be used to provide two-dimensional position resolution with fewer electronic channels than pixellated arrays. Arrays of this type are under development for the position-sensitive image plane detector for a coded-aperture telescope operating in the hard x-ray range of 20--200 keV. The prototype is a 1.5 mm thick, 64 x 64 orthogonal stripe CdZnTe detector of 0.375 mm pitch in both dimensions, approximately one square inch of sensitive area. In addition to energy and spatial resolution capabilities, as reported last year, the authors demonstrate the imaging capabilities and discuss uniformity of response across an 8 x 8 stripe, 64 pixel, segment of detector. A technique for determination of the depth of photon interaction is discussed and initial results related to depth determination are presented. Issues related to the design and development of readout electronics, the packaging and production of strip detectors and the production of compact strip detector modules, including detector and readout electronics, are also discussed.

Macri, J.R.; Boykin, D.V.; Larson, K. [Univ. of New Hampshire, Durham, NH (United States). Space Science Center] [and others

1996-12-31T23:59:59.000Z

168

Viscosity to entropy ratio at extremality  

E-Print Network [OSTI]

Assuming gauge theory realization at the boundary, we show that the viscosity to entropy ratio is 1/(4 pi) where the bulk is represented by a large class of extremal black holes in anti-de Sitter space. In particular, this class includes multiple R-charged black holes in various dimensions.

Sayan K. Chakrabarti; Sachin Jain; Sudipta Mukherji

2009-10-27T23:59:59.000Z

169

Fission Product Ratios as Treaty Monitoring Discriminants  

SciTech Connect (OSTI)

The International Monitoring System (IMS) of the Comprehensive Test Ban Treaty Organization (CTBTO) is currently under construction. The IMS is intended for monitoring of nuclear explosions. The radionuclide branch of the IMS monitors the atmosphere for short-lived radioisotopes indicative of a nuclear weapon test, and includes field collection and measurement stations, as well as laboratories to provide reanalysis of the most important samples and a quality control function. The Pacific Northwest National Laboratory in Richland, Washington hosts the United States IMS laboratory, with the designation “RL16.” Since acute reactor containment failures and chronic reactor leakage may also produce similar isotopes, it is tempting to compute ratios of detected isotopes to determine the relevance of an event to the treaty or agreement in question. In this paper we will note several shortcomings of simple isotopic ratios: (1) fractionation of different chemical species, (2) difficulty in comparing isotopes within a single element, (3) the effect of unknown decay times. While these shortcomings will be shown in the light of an aerosol sample, several of the problems extend to xenon isotopic ratios. The result of the difficulties listed above is that considerable human expertise will be required to convert a simple mathematical ratio into a criterion which will reliably categorize an event as ‘reactor’ or ‘weapon’.

Miley, Harry S.; Bowyer, Ted W.; Greenwood, Lawrence R.; Arthur, Richard J.

2008-05-15T23:59:59.000Z

170

Blowing Ratio Effects on Film Cooling Effectiveness  

E-Print Network [OSTI]

The research focuses on testing the film cooling effectiveness on a gas turbine blade suction side surface. The test is performed on a five bladed cascade with a blow down facility. Four different blowing ratios are used in this study, which are 0...

Liu, Kuo-Chun

2010-01-14T23:59:59.000Z

171

Theater SBI cost-effectiveness ratios  

SciTech Connect (OSTI)

To address M missiles spaced at intervals longer than the constillation reconstitution time t, the defense needs at the absentee ratio N{sub a} of SBIs to fill the belt plus the M SBIs needed for the intercepts; the resulting cost effectiveness scales as M/(M + N{sub a}). N{sub a} is large and CER small for small ranges and numbers of missiles. For several-hundred missile threats, CERs are greater than unity for ranges of interest.

Canavan, G.H.

1993-11-01T23:59:59.000Z

172

K?K? X-Ray Transition-Probability Ratios for Elements 18?Z?39  

Science Journals Connector (OSTI)

K?K? x-ray transition-probability ratios for 16 elements in the range 18?Z?39 were measured with a high-resolution Si(Li) detector. The K vacancies were produced by a heavily filtered bremsstrahlung beam from a commercial x-ray tube. Our results agree qualitatively with the theoretical calculations of Scofield but are consistently about 15% higher.

V. W. Slivinsky and P. J. Ebert

1972-04-01T23:59:59.000Z

173

Role of Hydrogen Peroxide in a Selected Emulsified Fuel Ratio and Comparing It to Diesel Fuel  

Science Journals Connector (OSTI)

(9) At higher load conditions, the brake thermal efficiency slightly increases for the hydrogen-peroxide-added emulsified fuel than for the remaining two fuels. ... Reduction of NOx, smoke, BSFC, and maximum combustion pressure by low compression ratios in a diesel engine fueled by emulsified fuel. ...

M. P. Ashok; C. G. Saravanan

2008-05-03T23:59:59.000Z

174

HIGHER EDUCATION TAX 42013 TAX YEAR  

E-Print Network [OSTI]

HIGHER EDUCATION TAX BENEFITS 42013 TAX YEAR #12;2 The credit offsets what you pay for the first four years of higher education by reducing the amount of income tax you pay. In addition, the credit is more than you owe in taxes. Eligibility Requirements The full credit is available to individuals whose

Reif, John H.

175

HIGHER EDUCATION TAX BENEFITS 42011 TAX YEAR  

E-Print Network [OSTI]

HIGHER EDUCATION TAX BENEFITS 42011 TAX YEAR #12;2 The credit offsets what you pay for the first four years of higher education by reducing the amount of income tax you pay. In addition, the credit during the tax year and has not claimed the Hope Scholarship Credit and/or the American Opportunity Tax

176

Supporting accessibility in higher education information systems  

Science Journals Connector (OSTI)

Higher education institutions (HEI) and students are highly dependent of information systems, implemented as web applications. Students must be able to access this applications, thought accessible web interfaces, in order to perform their academic activities. ... Keywords: DSpace, W3C, accessibility, higher education institutions, moodle

Arsénio Reis; João Barroso; Ramiro Gonçalves

2013-07-01T23:59:59.000Z

177

CO2 Capture by Aqueous Absorption/Stripping Opportunities for Better Technology  

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

Capture Capture by Aqueous Absorption/Stripping Opportunities for Better Technology by Gary Rochelle Department of Chemical Engineering University of Texas CO 2 Emissions by Source (1998) C o a l E l e c G a s E l e c . P e t r o . E l e c . I n d . C o a l I n d . G a s I n d . P e t r o . T r a n s . O t h e r MMTCE 0 100 200 300 400 500 Comparison of Power Technologies (500 MW Power Plant) P F & F G D G T C C I G C C CO 2 Wet Vol. % 5 15 0 10 20 Flue Gas (scfm) 0.0 5.0e+5 1.0e+6 1.5e+6 2.0e+6 2.5e+6 The Plan * Base Case MEA * Thermodynamics: Solvents for Reduced Energy: * CO2 Kinetics: Solvents for Increased Rates * Energy Integration * Amine Makeup: Degradation, Corrosion * Contactor Innovations * Four Promising Solvent Systems Typical Absorber / Stripper Flue Gas 2-10% O 2 3-10% CO 2 Rich Amine HX Lean Amine AB SO RB ER STRIPPER 100-120 o C CO 2 H 2 O (O 2 ) CO 2 < 2% Reboiler 1-2 atm

178

Cross strip microchannel plate imaging photon counters with high time resolution  

SciTech Connect (OSTI)

We have implemented cross strip readout microchannel plate detectors in 18 mm active area format including open face (UV/particle) and sealed tube (optical) configurations. These have been tested with a field programmable gate array based parallel channel electronics for event encoding which can process high input event rates (> 5 MHz) with high spatial resolution. Using small pore MCPs (6 {micro}m) operated in a pair, we achieve gains of >5 x 10{sup 5} which is sufficient to provide spatial resolution of <35 {micro}m FHWM, with self triggered event timing accuracy of {approx}2 ns for sealed tube optical sensors. A peak quantum efficiency of {approx}19% at 500 nm has been achieved with SuperGenII photocathodes that have response over the 400 nm to 900 nm range. Local area counting rates of up to >200 events/mcp pore sec{sup -1} have been attained, along with image linearity and stability to better than 50 {micro}m.

Stonehill, Laura C [Los Alamos National Laboratory; Shirey, Robert [Los Alamos National Laboratory; Rabin, Michael W [Los Alamos National Laboratory; Thompson, David C [Los Alamos National Laboratory; Siegmund, Oswald H W [U.C. BERKELEY; Vallerga, John V [U.C. BERKELEY; Tremsin, Anton S [U.C. BERKELEY

2010-01-01T23:59:59.000Z

179

Flow distribution in a solar collector panel with horizontally inclined absorber strips  

Science Journals Connector (OSTI)

The objective of this work is to theoretically and experimentally investigate the flow and temperature distribution in a solar collector panel with an absorber consisting of horizontally inclined strips. Fluid flow and heat transfer in the collector panel are studied by means of computational fluid dynamics (CFD) calculations. Further, experimental investigations of a 12.5 m2 solar collector panel with 16 parallel connected horizontal fins are carried out. The flow distribution through the absorber is evaluated by means of temperature measurements on the backside of the absorber tubes. The measured temperatures are compared to the temperatures determined by the CFD model and there is a good similarity between the measured and calculated results. Calculations with the CFD model elucidate the flow and temperature distribution in the collector. The influences of different operating conditions such as flow rate, properties of solar collector fluid, solar collector fluid inlet temperature and collector tilt angle are shown. The flow distribution through the absorber fins is uniform if high flow rates are used. By decreased flow rate and decreased content of glycol in the glycol/water mixture used as solar collector fluid, and by increased collector tilt and inlet temperature, the flow distribution gets worse resulting in an increased risk of boiling in the upper part of the collector panel.

Jianhua Fan; Louise Jivan Shah; Simon Furbo

2007-01-01T23:59:59.000Z

180

The silicon micro-strip detector plane for the LOFT/Wide Field Monitor  

E-Print Network [OSTI]

The main objective of the Wide Field Monitor (WFM) on the LOFT mission is to provide unambiguous detection of the high-energy sources in a large field of view, in order to support science operations of the LOFT primary instrument, the LAD. The monitor will also provide by itself a large number of results on the timing and spectral behaviour of hundreds of galactic compact objects, Active Galactic Nuclei and Gamma-Ray Bursts. The WFM is based on the coded aperture concept where a position sensitive detector records the shadow of a mask projected by the celestial sources. The proposed WFM detector plane, based on Double Sided micro-Strip Silicon Detectors (DSSD), will allow proper 2-dimensional recording of the projected shadows. Indeed the positioning of the photon interaction in the detector with equivalent fine resolution in both directions insures the best imaging capability compatible with the allocated budgets for this telescope on LOFT. We will describe here the overall configuration of this 2D-WFM and t...

Goldwurm, A; Götz, D; Laurent, P; Lebrun, F; Limousin, O; Basa, S; Bertoli, W; Delagnes, E; Dolgorouky, Y; Gevin, O; Gros, A; Gouiffes, C; Jeanneau, F; Lachaud, C; Llored, M; Olivetto, C; Prévôt, G; Renaud, D; Rodriguez, J; Rossin, C; Schanne, S; Soldi, S; Varniere, P

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Isogeometric rotation-free bending-stabilized cables: Statics, dynamics, bending strips and coupling with shells  

Science Journals Connector (OSTI)

Abstract An isogeometric cable formulation is derived from a 3D continuum, where large-deformation kinematics and the St. Venant–Kirchhoff constitutive law are assumed. It is also assumed that the cable cross-sections remain circular, planar, and orthogonal to the cable middle curve during the deformation. The cable geometry representation reduces to a curve in 3D space, and, because only displacement degrees of freedom are employed, only membrane and bending effects are accounted for in the modeling. Torsion is neglected and bending is confined to an osculating plane of the curve. In the case structural loading and response are confined to a plane, the formulation is reduced to a 2D Euler–Bernoulli beam of finite thickness. Bending terms also stabilize the cable formulation in the presence of compressive forces. The resulting cable formulation is validated in the regime of linear and nonlinear statics, and nonlinear dynamics. The concept of bending strips is extended to the case of multiple cables, and cable-shell coupling is also investigated. The formulation is presented in sufficient mathematical detail for straightforward computer implementation.

S.B. Raknes; X. Deng; Y. Bazilevs; D.J. Benson; K.M. Mathisen; T. Kvamsdal

2013-01-01T23:59:59.000Z

182

Stripping of H- beams by residual gas in the linac at the Los Alamos neutron science center  

SciTech Connect (OSTI)

The linear accelerator at the Los Alamos Neutron Science Center (LANSCE) accelerates both protons and H{sup -} ions using Cockroft-Walton-type injectors, a drift-tube linac and a coupled-cavity linac. The vacuum is maintained in the range of 10{sup -6} to 10{sup -7} Torr; the residual gas in the vacuum system results in some stripping of the electrons from the H{sup -} ions resulting in beam spill and the potential for unwanted proton beams delivered to experiments. We have measured the amount of fully-stripped H{sup -} beam (protons) that end up at approximately 800 MeV in the beam switchyard at LANSCE using image plates as very sensitive detectors. We present here the motivation for the measurement, the measurement technique and results.

Mccrady, Rodney C [Los Alamos National Laboratory; Ito, Takeyasu [Los Alamos National Laboratory; Cooper, Martin D [Los Alamos National Laboratory; Alexander, Saunders [Los Alamos National Laboratory

2010-09-07T23:59:59.000Z

183

A Natural Gas, High Compression Ratio, High Efficiency ICRE ...  

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

A Natural Gas, High Compression Ratio, High Efficiency ICRE A Natural Gas, High Compression Ratio, High Efficiency ICRE Using natural gas and gasoline modeling, indications are...

184

Table E7.1. Consumption Ratios of Fuel, 1998  

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

1. Consumption Ratios of Fuel, 1998;" " Level: National and Regional Data; " " Row: Values of Shipments and Employment Sizes;" " Column: Energy-Consumption Ratios;" " Unit:...

185

Development of a Micropyrolyzer for Enhanced Isotope Ratio Measurement...  

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

Micropyrolyzer for Enhanced Isotope Ratio Measurement. Development of a Micropyrolyzer for Enhanced Isotope Ratio Measurement. Abstract: This paper presents design, fabrication and...

186

Results Of Routine Strip Effluent Hold Tank, Decontaminated Salt Solution Hold Tank, Caustic Wash Tank And Caustic Storage Tank Samples From Modular Caustic-Side Solvent Extraction Unit During Macrobatch 6 Operations  

SciTech Connect (OSTI)

Strip Effluent Hold Tank (SEHT), Decontaminated Salt Solution Hold Tank (DSSHT), Caustic Wash Tank (CWT) and Caustic Storage Tank (CST) samples from the Interim Salt Disposition Project (ISDP) Salt Batch (“Macrobatch”) 6 have been analyzed for 238Pu, 90Sr, 137Cs, and by Inductively Coupled Plasma Emission Spectroscopy (ICPES). The Pu, Sr, and Cs results from the current Macrobatch 6 samples are similar to those from comparable samples in previous Macrobatch 5. In addition the SEHT and DSSHT heel samples (i.e. ‘preliminary’) have been analyzed and reported to meet NGS Demonstration Plan requirements. From a bulk chemical point of view, the ICPES results do not vary considerably between this and the previous samples. The titanium results in the DSSHT samples continue to indicate the presence of Ti, when the feed material does not have detectable levels. This most likely indicates that leaching of Ti from MST has increased in ARP at the higher free hydroxide concentrations in the current feed.

Peters, T. B.

2014-01-02T23:59:59.000Z

187

PIP Strip/Array Protocol 1) Cut the membrane (Amersham Hybond-C Extra RPN203E) into the appropriate  

E-Print Network [OSTI]

before making strips. a. Resuspension Buffer - 250ul Chloroform + 500ul MeOH + 200ul Water b. Spot Buffer lipid in the correct amount of Resuspension Buffer to make a 1mM stock solution. Work in the glass vial with 104.5ul Resuspension Buffer. Lipid Amount ul Resuspion Buffer for 1mM PI 0.1 mg 109.6 ul PI3P 0.1 mg

Gozani, Or

188

The effect of marbling and subcutaneous fat on the microbiological and sensory characteristics of beef strip loin steaks  

E-Print Network [OSTI]

in the marbling experiment. Mean surface discoloration and mean overall appearance scores of intact steaks packaged in HOB film for 14 to 28 days were greater than those of samples packaged and stored without subcutaneous fat. DEDICATION This study... of subcutaneous fat samples taken from intact steaks and of fat packaged and stored separately were consistently 24 Table 9. Mean off-odor scores of beef strip loin steaks (a) packaged and stored in polyvinyl chloride (PVC) film and (b) vacuum packaged...

Correale, Karen Kross

2012-06-07T23:59:59.000Z

189

SiO2 aerogel ultra low k dielectric patterning using different hard mask concepts and stripping processes  

Science Journals Connector (OSTI)

The patterning of porous SiO"2 aerogel as ultra low k dielectric has been investigated. Three different concepts were examined to etch this material without damage and to finally integrate it into a copper damascene metallization. Oxygen containing etching ... Keywords: Dielectric thin films, H2/N2 strip, Integrated circuit interconnections, Low dielectric constant, Plasma etching, Porous materials, SiO2 aerogel

F. Blaschta; K. Schulze; S. E. Schulz; T. Gessner

2004-10-01T23:59:59.000Z

190

CO (Carbon Monoxide Mixing Ratio System) Handbook  

SciTech Connect (OSTI)

The main function of the CO instrument is to provide continuous accurate measurements of carbon monoxide mixing ratio at the ARM SGP Central Facility (CF) 60-meter tower (36.607 °N, 97.489 °W, 314 meters above sea level). The essential feature of the control and data acquisition system is to record signals from a Thermo Electron 48C and periodically calibrate out zero and span drifts in the instrument using the combination of a CO scrubber and two concentrations of span gas (100 and 300 ppb CO in air). The system was deployed on May 25, 2005.

Biraud, S

2011-02-23T23:59:59.000Z

191

High aspect ratio, remote controlled pumping assembly  

DOE Patents [OSTI]

A miniature dual syringe-type pump assembly which has a high aspect ratio and which is remotely controlled, for use such as in a small diameter penetrometer cone or well packer used in water contamination applications. The pump assembly may be used to supply and remove a reagent to a water contamination sensor, for example, and includes a motor, gearhead and motor encoder assembly for turning a drive screw for an actuator which provides pushing on one syringe and pulling on the other syringe for injecting new reagent and withdrawing used reagent from an associated sensor.

Brown, Steve B. (Livermore, CA); Milanovich, Fred P. (Lafayette, CA)

1995-01-01T23:59:59.000Z

192

Meteorological Effects on Air/Fuel Ratio  

E-Print Network [OSTI]

1. "Temperature Compensat d Air/Fuel Ratio Control on a Recuperated Furnace," by J. L. Ferri. GTE Products Corporation, Towanda, PA, lECTC '83 2. Chemical Engineers Handbook, PerTY and Chilton, 5th ed.., (McGraw Hlln, p. 12-7. 3. "Technology..., E = (100 ... 10) (ill) - 100 = 17.2% excess a . 2 Example 2 A furnace uses recuperators which prehe~t the combustion air to 1200 OF using 30 OF air. WithJlOO OF air, the preheated air temperature will be approxIjrnately 1270 OF, a 70 OF increase...

Ferri, J. L.

1984-01-01T23:59:59.000Z

193

Multi-Wavelength Studies of Spectacular Ram Pressure Stripping of a Galaxy. II. Star Formation in the Tail  

E-Print Network [OSTI]

With multiband photometric data in public archives, we detected four intracluster star-forming regions in the Virgo cluster. Two of them were at a projected distance of 35 kpc away from NGC4388, and the other two were 66 kpc away. Our new spectroscopic observation revealed that their recession velocities were comparable to the ram-pressure-stripped tail of NGC4388 and confirmed their association. The stellar mass of the star-forming regions ranged from 10^4 - 10^4.5 M_sun except for that of the faintest one which would be solar abundance, and the age of the stars was ~ 10^6.8 years. Their young stellar age meant that the star formation should have started after the gas was stripped from NGC4388. This implied in situ condensation of the stripped gas. We also found that two star-forming regions lay near the leading edge of a filamentary dark cloud. The extinction of the filament was smaller than that derived from the Balmer decrement of the star-forming regi...

Yagi, Masafumi; Fujita, Yutaka; Nakazawa, Kazuhiro; Akahori, Takuya; Hattori, Takashi; Yoshida, Michitoshi; Makishima, Kazuo

2013-01-01T23:59:59.000Z

194

Field-dependent critical state of high-Tc superconducting strip simultaneously exposed to transport current and perpendicular magnetic field  

SciTech Connect (OSTI)

We present an exact analytical approach for arbitrary field-dependent critical state of high-T{sub c} superconducting strip with transport current. The sheet current and flux-density profiles are derived by solving the integral equations, which agree with experiments quite well. For small transport current, the approximate explicit expressions of sheet current, flux-density and penetration depth for the Kim model are derived based on the mean value theorem for integration. We also extend the results to the field-dependent critical state of superconducting strip in the simultaneous presence of applied field and transport current. The sheet current distributions calculated by the Kim model agree with experiments better than that by the Bean model. Moreover, the lines in the I{sub a}-B{sub a} plane for the Kim model are not monotonic, which is quite different from that the Bean model. The results reveal that the maximum transport current in thin superconducting strip will decrease with increasing applied field which vanishes for the Bean model. The results of this paper are useful to calculate ac susceptibility and ac loss.

Xue, Cun; He, An; Yong, Huadong; Zhou, Youhe, E-mail: zhouyh@lzu.edu.cn [Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China, and Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000 (China)] [Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China, and Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, Gansu 730000 (China)

2013-12-15T23:59:59.000Z

195

A Binary Readout System for Silicon Strip Detectors at the LHC A. Ciocio, T. Collins, J. Emes, C. Haber, I. Kipnis, M. Shapiro, J. Siegrist, H. Spieler  

E-Print Network [OSTI]

A Binary Readout System for Silicon Strip Detectors at the LHC A. Ciocio, T. Collins, J. Emes, C. Haber, I. Kipnis, M. Shapiro, J. Siegrist, H. Spieler Lawrence Berkeley National Laboratory, Berkeley

196

Higher levels of the transmon qubit  

E-Print Network [OSTI]

This thesis discusses recent experimental work in measuring the properties of higher levels in transmon qubit systems. The first part includes a thorough overview of transmon devices, explaining the principles of the device ...

Bader, Samuel James

2014-01-01T23:59:59.000Z

197

WHAT FUTURE FOR UK HIGHER EDUCATION?  

E-Print Network [OSTI]

BERKELEY http://cshe.berkeley.edu/ WHAT FUTURE FOR UK HIGHERof the course). Brown, What Future for UK Higher Educationand local trends and also on what happens on migration, and

Roger Brown

2010-01-01T23:59:59.000Z

198

Higher Education, Mobility and the Subsidiarity Principle  

Science Journals Connector (OSTI)

Two issues related to higher education in Europe are addressed in this chapter; one relates to the mobility of students especially the Bologna process, the other to that of researchers, with a special focus on...

Marcel Gérard

2008-01-01T23:59:59.000Z

199

Flexible Conversion Ratio Fast Reactor Systems Evaluation  

SciTech Connect (OSTI)

Conceptual designs of lead-cooled and liquid salt-cooled fast flexible conversion ratio reactors were developed. Both concepts have cores reated at 2400 MWt placed in a large-pool-type vessel with dual-free level, which also contains four intermediate heat exchanges coupling a primary coolant to a compact and efficient supercritical CO2 Brayton cycle power conversion system. Decay heat is removed passively using an enhanced Reactor Vessel Auxiliary Cooling System and a Passive Secondary Auxiliary Cooling System. The most important findings were that (1) it is feasible to design the lead-cooled and salt-cooled reactor with the flexible conversion ratio (CR) in the range of CR=0 and CR=1 n a manner that achieves inherent reactor shutdown in unprotected accidents, (2) the salt-cooled reactor requires Lithium thermal Expansion Modules to overcme the inherent salt coolant's large positive coolant temperature reactivity coefficient, (3) the preferable salt for fast spectrum high power density cores is NaCl-Kcl-MgCl2 as opposed to fluoride salts due to its better themal-hydraulic and neutronic characteristics, and (4) both reactor, but attain power density 3 times smaller than that of the sodium-cooled reactor.

Neil Todreas; Pavel Hejzlar

2008-06-30T23:59:59.000Z

200

Systematic variations in strip-out factors used in the assessment of plutonium and americium lung burdens at Los Alamos National Laboratory  

E-Print Network [OSTI]

in partial fulfillment of the requirements fo the degree of MASTER OF SCIENCE December 1992 Major Subject: Health Physics SYSTEMATIC VARIATIONS IN STRIP-OUT FACTORS USED IN THE ASSESSMENT OF PLUTONIUM AND AMERICIUM LUNG BURDENS AT LOS ALAMOS NATIONAL... Variations in Strip-Out Factors Used in the Assessment of Plutonium and Americium Lung Burdens at Los Alamos National Laboratory. (December 1992) Steven Charles Myers, B. A. , State University of New York College at Buffalo; M. Ed. , State University...

Myers, Steven Charles

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Catalysts for conversion of methane to higher hydrocarbons  

DOE Patents [OSTI]

Catalysts for converting methane to higher hydrocarbons such as ethane and ethylene in the presence of oxygen at temperatures in the range of about 700.degree. to 900.degree. C. are described. These catalysts comprise calcium oxide or gadolinium oxide respectively promoted with about 0.025-0.4 mole and about 0.1-0.7 mole sodium pyrophosphate. A preferred reaction temperature in a range of about 800.degree. to 850.degree. C. with a preferred oxygen-to-methane ratio of about 2:1 provides an essentially constant C.sub.2 hydrocarbon yield in the range of about 12 to 19 percent over a period of time greater than about 20 hours.

Siriwardane, Ranjani V. (Morgantown, WV)

1993-01-01T23:59:59.000Z

202

The low Sr/Ba ratio on some extremely metal-poor stars  

E-Print Network [OSTI]

It has been noted that, in classical extremely metal-poor (EMP) stars, the abundance ratio of Sr and Ba, is always higher than [Sr/Ba] = -0.5, the value of the solar r-only process; however, a handful of EMP stars have recently been found with a very low Sr/Ba ratio. We try to understand the origin of this anomaly by comparing the abundance pattern of the elements in these stars and in the classical EMP stars. Four stars with very low Sr/Ba ratios were observed and analyzed within LTE approximation through 1D (hydrostatic) model atmosphere, providing homogeneous abundances of nine neutron-capture elements. In CS 22950-173, the only turnoff star of the sample, the Sr/Ba ratio is, in fact, found to be higher than the r-only solar ratio, so the star is discarded. The remaining stars (CS 29493-090, CS 30322-023, HE 305-4520) are cool evolved giants. They do not present a clear carbon enrichment. The abundance patterns of the neutron-capture elements in the three stars are strikingly similar to a theoretical s-pro...

Spite, M; Bonifacio, P; Caffau, E; François, P; Sbordone, L

2014-01-01T23:59:59.000Z

203

Viscosity bound violation in higher derivative gravity  

SciTech Connect (OSTI)

Motivated by the vast string landscape, we consider the shear viscosity to entropy density ratio in conformal field theories dual to Einstein gravity with curvature square corrections. After field redefinitions these theories reduce to Gauss-Bonnet gravity, which has special properties that allow us to compute the shear viscosity nonperturbatively in the Gauss-Bonnet coupling. By tuning of the coupling, the value of the shear viscosity to entropy density ratio can be adjusted to any positive value from infinity down to zero, thus violating the conjectured viscosity bound. At linear order in the coupling, we also check consistency of four different methods to calculate the shear viscosity, and we find that all of them agree. We search for possible pathologies associated with this class of theories violating the viscosity bound.

Brigante, Mauro; Liu Hong; Myers, Robert C.; Shenker, Stephen; Yaida, Sho [Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5 (Canada) and Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada); Department of Physics, Stanford University, Stanford, CA 94305 (United States)

2008-06-15T23:59:59.000Z

204

Abundance ratios in hierarchical galaxy formation  

E-Print Network [OSTI]

The chemical enrichment and stellar abundance ratios of galaxies which form in a hierarchical clustering scheme are calculated. For this purpose I adopt the star formation histories (SFH) as they are delivered by semi-analytic models in Kauffmann (1996}. It turns out that the average SFH of cluster ellipticals does not yield globally alpha-enhanced stellar populations. The star burst that occurs when the elliptical forms in the major merger plays therefore a crucial role in producing alpha-enhancement. Only under the assumption that the IMF is significantly flattened with respect to the Salpeter value during the burst, a Mg/Fe overabundant population can be obtained. In particular for the interpretation of radial gradients in metallicity and alpha-enhancement, the mixing of global and burst populations are of great importance. The model predicts bright field galaxies to be less alpha-enhanced than their counterparts in clusters.

D. Thomas

1999-01-18T23:59:59.000Z

205

Higher order equations of motion and gravity  

Science Journals Connector (OSTI)

Standard fundamental equations of motion for point particles are of second order in the time derivative. Here we are exploring the consequences of fundamental equations of motion with an additional small even higher order term to the standard formulation. This is related to two issues: (i) higher order equations of motion will have influence on the definition of the structure of possible interactions and in particular of the gravitational interaction, and (ii) such equations of motion provide a framework to test the validity of Newton’s second law which is the basis for the definition of forces but which assumes from the very beginning that the fundamental equations of motion are of second order. We will show that starting with our generalized equations of motions it is possible to introduce the space-time metric describing the gravitational interaction by means of a standard gauge principle. Another main result within our model of even higher order derivatives is that for slowly varying and smooth fields the higher order derivatives either lead to runaway solutions or induces a zitterbewegung. We confront this higher order scheme with experimental data.

Claus Lämmerzahl and Patricia Rademaker

2012-12-06T23:59:59.000Z

206

BLACK HOLE ENTROPY IN HIGHER CURVATURE GRAVITY  

E-Print Network [OSTI]

We discuss some recent results on black hole thermodynamics within the context of effective gravitational actions including higher-curvature interactions. Wald's derivation of the First Law demonstrates that black hole entropy can always be expressed as a local geometric density integrated over a space-like cross-section of the horizon. In certain cases, it can also be shown that these entropy expressions satisfy a Second Law. One such simple example is considered from the class of higher curvature theories where the Lagrangian consists of a polynomial in the Ricci scalar.

TED JACOBSON; GUNGWON KANG; ROBERT C. MYERS

1995-02-27T23:59:59.000Z

207

Teknik och social frndring Higher Seminar  

E-Print Network [OSTI]

ambition to shape the transition towards sustainable energy systems. All welcome! Tema T higher seminar and Social change "Transforming energy systems: a socio-tecnical perspective" Innovation and technology the challenge of transforming energy systems towards greater sustainability. I will, however, also focus

Zhao, Yuxiao

208

Task and Machine Heterogeneities: Higher Moments Matter  

E-Print Network [OSTI]

Task and Machine Heterogeneities: Higher Moments Matter Abdulla M. Al-Qawasmeh 1 , Anthony A.potter}@colostate.edu jtsmith@digitalglobe.com Abstract - One type of heterogeneous computing (HC) systems consists of machines in this matrix represents the ETC of a specific task on a specific machine when executed exclusively. Heuristics

Maciejewski, Anthony A.

209

Broadband, Higher Education and Rural New Mexico  

E-Print Network [OSTI]

Broadband, Higher Education and Rural New Mexico Gil Gonzales, Ph.D., Chief Information Officer University of New Mexico, Albuquerque, NM 87131 E mail: gonzgil@unm.edu Background UNM students enjoy the country do. New Mexico is also home to two national laboratories in Los Alamos (Los Alamos National

Maccabe, Barney

210

Dashboards in Higher UMACRAO/WACRAO Joint  

E-Print Network [OSTI]

Dashboards in Higher Education UMACRAO/WACRAO Joint Conference November 1-3, 2006 Phil Hull-UW Madison, Office of the Registrar Jason Haverly-UW River Falls, Information Technology Services Gery informed decisions based on collected BI (business intelligence) ·Align strategies and organizational goals

Wisconsin at Madison, University of

211

Higher Derivative D-brane Couplings  

E-Print Network [OSTI]

supersymmetry. In the third part, we obtain the higher derivative D-brane action by using both linearized T-duality and string disc amplitude computation. We evaluate disc amplitude of one R-R field C^(p-3) and two NS-NS fields in the presence of a single Dp...

Guo, Guangyu

2012-10-19T23:59:59.000Z

212

Innovation Through Collaboration:Higher Learning  

E-Print Network [OSTI]

Innovation Through Collaboration:Higher Learning Commission ·The Criteria for Accredita Collaboration: Criteria ·Criterion One: Mission and Integrity ·Criterion Two: Preparing: Acquisi/on, Discovery, and Applica/on of Knowledge #12;Innovation Through Collaboration

Zhou, Yaoqi

213

High beach temperatures increased female-biased primary sex ratios but reduced output of female hatchlings in the leatherback turtle  

Science Journals Connector (OSTI)

Abstract Sex of offspring in most turtles is determined by temperature-dependent sex determination (TSD). In sea turtles, higher incubation temperatures produce female hatchlings and primary sex ratios are often highly female-biased. Because of the current rate of climate warming, highly female-biased sex ratios have raised concern among scientists and managers because populations might become too female biased for genetic viability. We tested the effects of higher incubation temperatures on embryo and hatchling mortality and on sex ratios in a population of leatherback turtles (Dermochelys coriacea) in the eastern Pacific. The long-term study provided a large sample size in a location influenced by El Niño Southern Oscillation that resulted in highly variable climatic conditions between seasons. High temperatures reduced emergence success. Output of female hatchlings increased with incubation temperature as it reached the upper end of the transitional range (range of temperatures that produce both sexes) (30 °C) and decreased afterwards because high temperatures increased mortality of ‘female clutches’. Effect of temperature on female hatchling output lessened female-biased sex ratios from 85% female primary sex ratios to 79% secondary sex ratios (sex ratios of total number of hatchlings emerged). If male turtles reproduce more often than females, operational sex ratios will be closer to 1:1. Female-biased primary sex ratios should not raise concerns by default, but climate change may still threaten populations by reducing hatchling output and increasing frequency of seasons with 100% female production. Clutch relocation to cooler conditions may alter sex ratios and should be used cautiously unless temperatures are so high that no hatchlings survive. In addition, it is unknown what differential survival of male versus female hatchlings may have on the eventual adult sex ratio after they enter the ocean and disperse.

Pilar Santidrián Tomillo; Daniel Oro; Frank V. Paladino; Rotney Piedra; Annette E. Sieg; James R. Spotila

2014-01-01T23:59:59.000Z

214

Measurement of the charge ratio of atmospheric muons with the CMS detector  

SciTech Connect (OSTI)

We present a measurement of the ratio of positive to negative muon fluxes from cosmic ray interactions in the atmosphere, using data collected by the CMS detector both at ground level and in the underground experimental cavern at the CERN LHC. Muons were detected in the momentum range from 5 GeV/c to 1 TeV/c. The surface flux ratio is measured to be 1.2766 \\pm 0.0032(stat.) \\pm 0.0032 (syst.), independent of the muon momentum, below 100 GeV/c. This is the most precise measurement to date. At higher momenta the data are consistent with an increase of the charge ratio, in agreement with cosmic ray shower models and compatible with previous measurements by deep-underground experiments.

Khachatryan, Vardan; et al.

2010-08-01T23:59:59.000Z

215

Observation of a stripping threshold for the reaction N2 ^++CH4?N2H^++CH3  

E-Print Network [OSTI]

reactions of positive ions have been found to proceed with no activa­ tion energT; (2) the most probable value of the product translational energy is about 0.1 eV lower than the value predicted by the spectator stripping model, 3 exactly the opposite... that the methyl fragment be produced with in­ ternal excitation. B. Reaction cross section a R The reaction cross section is calculated from the equation where Ie is the total reactively scattered product ion intensity, IA is the transmitted primary ion...

Wyatt, J. R.; Strattan, L. W.; Snyder, S. C.; Hierl, Peter M.

1976-01-01T23:59:59.000Z

216

Lower Cost, Higher Performance Carbon Fiber  

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

David (Dave) Warren David (Dave) Warren Field Technical Manager Transportation Materials Research Oak Ridge National Laboratory P.O. Box 2009, M/S 8050 Oak Ridge, Tennessee 37831-8050 Phone: 865-574-9693 Fax: 865-574-0740 Email: WarrenCD@ORNL.GOV Lower Cost, Higher Performance Carbon Fiber 14 February 2011 2 Managed by UT-Battelle for the U.S. Department of Energy Presentation_name Questions for Today Materials How can the cost of carbon fiber suitable for higher performance applications (H 2 Storage) be developed? H 2 Storage requirements implies Aerospace grade fibers. Can we build off of work previously done for more modest structural applications? To accurately answer: We need to know the minimum performance and maximum cost requirements of the fiber not simply the properties of current fiber.

217

Higher modulus compositions incorporating particulate rubber  

DOE Patents [OSTI]

Rubber particles, to be used as fillers or extenders for various composite polymer systems, are chlorinated by a gas-solid phase reaction with a chlorine-containing gas. A composite polymer containing the chlorinated rubber fillers or extenders exhibits a higher flexural modulus than if prepared using an unchlorinated rubber filler or extender. Chlorination of the rubber particles is carried out by contacting the finely divided rubber particles with a chlorine-containing gas comprising at least about 5 volume percent chlorine. Advantageously, the chlorine can be diluted with air, nitrogen or other essentially inert gases and may contain minor amounts of fluorine. Improved performance is obtained with nitrogen dilution of the chlorine gas over air dilution. Improved polymer composite systems having higher flexural modulus result from the use of the chlorinated rubber particles as fillers instead of unchlorinated rubber particles. 2 figs.

Bauman, B.D.; Williams, M.A.; Bagheri, R.

1997-12-02T23:59:59.000Z

218

Higher modulus compositions incorporating particulate rubber  

DOE Patents [OSTI]

Rubber particles, to be used as fillers or extenders for various composite polymer systems, are chlorinated by a gas-solid phase reaction with a chlorine-containing gas. A composite polymer containing the chlorinated rubber fillers or extenders exhibits a higher flexural modulus than if prepared using an unchlorinated rubber filler or extender. Chlorination of the rubber particles is carried out by contacting the finely divided rubber particles with a chlorine-containing gas comprising at least about 5 volume percent chlorine. Advantageously, the chlorine can be diluted with air, nitrogen or other essentially inert gases and may contain minor amounts of fluorine. Improved performance is obtained with nitrogen dilution of the chlorine gas over air dilution. Improved polymer composite systems having higher flexural modulus result from the use of the chlorinated rubber particles as fillers instead of unchlorinated rubber particles.

Bauman, Bernard D. (Emmaus, PA); Williams, Mark A. (Souderton, PA); Bagheri, Reza (Bethlehem, PA)

1997-12-02T23:59:59.000Z

219

Lorentz violation and higher-derivative gravity  

E-Print Network [OSTI]

In this work, we analyze a gravity model with higher derivatives including a CPT-even Lorentz-violating term. In principle, the model could be a low-energy limit of a Lorentz-invariant theory presenting the violation of Lorentz symmetry as a consequence of a spontaneous symmetry-breaking mechanism if a decoupling between the metric and the Nambu-Goldstone modes is assumed. We have set up a convenient operator basis for the expansion of wave operators for symmetric second-rank tensors in the presence of a background vector. By using this set of operators, the particle content is obtained, and its consistency, regarding the conditions for stability and unitarity, is discussed. We conclude that this extra Lorentz noninvariant contribution is unable to address the problems of stability and unitarity of higher-derivative gravity models.

Hernaski, C

2014-01-01T23:59:59.000Z

220

Type II Einstein spacetimes in higher dimensions  

E-Print Network [OSTI]

This short note shows that many of the results derived by Pravda et al (Class. Quant. Grav. 24 4407-4428) for higher-dimensional Type D Einstein spacetimes can be generalized to all Einstein spacetimes admitting a multiple WAND; the main new result being the extension to include the Type II case. Examples of Type D Einstein spacetimes admitting non-geodesic multiple WANDs are given in all dimensions greater than 4.

Mark Durkee

2009-04-28T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Black hole entropy and higher curvature interactions  

Science Journals Connector (OSTI)

A general formula for the entropy of stationary black holes in Lovelock higher-curvature gravity theories is obtained by integrating the first law of black hole mechanics, which is derived by Hamiltonian methods. The entropy is not simply one quarter of the surface area of the horizon, but also includes a sum of intrinsic curvature invariants integrated over a cross section of the horizon.

Ted Jacobson and Robert C. Myers

1993-06-14T23:59:59.000Z

222

Regulators on additive higher Chow groups.  

E-Print Network [OSTI]

As an attempt to understand motives over $k[x]/(x^m)$, we define the cubical additive higher Chow groups with modulus for all dimensions extending the works of S. Bloch, H. Esnault and K. Rülling on 0-dimensional cycles. We give an explicit construction of regulator maps on the groups of 1-cycles with an aid of the residue theory of A. Parshin and V. Lomadze.

Jinhyun Park (Purdue University; West Lafayette; IN)

223

Final Report on Isotope Ratio Techniques for Light Water Reactors  

SciTech Connect (OSTI)

The Isotope Ratio Method (IRM) is a technique for estimating the energy or plutonium production in a fission reactor by measuring isotope ratios in non-fuel reactor components. The isotope ratios in these components can then be directly related to the cumulative energy production with standard reactor modeling methods.

Gerlach, David C.; Gesh, Christopher J.; Hurley, David E.; Mitchell, Mark R.; Meriwether, George H.; Reid, Bruce D.

2009-07-01T23:59:59.000Z

224

A pixel segmented silicon strip detector for ultra fast shaping at low noise and low power consumption  

SciTech Connect (OSTI)

A new radiation imaging device is proposed based on strips segmented into small pixels. Every pixel contains a submicron transistor that is normally biased in weak inversion. The ionization charge, upon collection by the pixel, changes the bias of the transistor to strong inversion and supplies a current up to several tens of a {micro}A. This is a consequence of the small pixel capacitance (12 fF). The drains and sources of the transistors on the same row and column are shorted to bus lines that effectively become the Y and X coordinates. These bus lines are connected to the off chip ICON amplifiers to provide a 10 ns peaking time at a noise of about 150 electrons and 1 nW power consumption, for a 10x10 cm{sup 2} detector and a MIP excitation. The noise performance is dominated by the ICON transistors. The cross talk between adjacent strips can be kept at a few percentage points provided a low transistor bias current is used.

Misiakos, K.; Kavadias, S. [NCSR Demokritos, Athens (Greece). Microelectronics Inst.] [NCSR Demokritos, Athens (Greece). Microelectronics Inst.

1996-06-01T23:59:59.000Z

225

Improved Superlinks for Higher Spin Operators  

E-Print Network [OSTI]

Traditional smearing or blocking techniques serve well to increase the overlap of operators onto physical states but allow for links orientated only along lattice axes. Recent attempts to construct more general propagators have shown promise at resolving the higher spin states but still rely on iterative smearing. We present a new method of superlink construction which creates meared links from (sparse) matrix multiplications, allowing for gluonic propagation in arbitrary directions. As an application and example, we compute the positive-parity, even-spin glueball spectrum up to spin 6 for pure gauge SU(2) at beta = 6, L = 16, in D = 2+1 dimensions.

Robert W. Johnson

2007-10-12T23:59:59.000Z

226

Higher mode stability in spheromak equilibria  

Science Journals Connector (OSTI)

Spheromak equilibria with current profiles varying from peaked to hollow are analyzed for higher mode stability using a linear magnetohydrodynamic(MHD) code. For a cylindrical flux conserver with a radius equal to length the n=2 m=2 mode is found to be marginally unstable for the same hollow current profile as the n=1 m=1 mode. While the growth rate for this n=2 mode is much lower than the n=1 mode the presence of the n=2 mode may explain experimentally observed relaxation phenomena involving short wavelength turbulence in spheromak equilibria with sufficiently hollow current profiles.

U. Shumlak; T. R. Jarboe

1999-01-01T23:59:59.000Z

227

Application of PLM in higher education procurement  

Science Journals Connector (OSTI)

Colleges and universities are moving away from the traditional focus on single exchange transactions and towards an emphasis on creating and maintaining longer-term buyerâ??supplier relationships. These strategic relationships generate managed supply chain relationships that encompass activities associated with the flow of goods and services, as well as the flow of information. The need to understand the complexities of the relationships in the supply chain and how these relationships are viewed by both buyers and suppliers is critical. The application of Product Lifecycle Management (PLM) in higher education purchasing and procurement will serve to improve organisational efficiencies and support strategic positioning.

Michael Wisma; Cynthia L. Tomovic

2010-01-01T23:59:59.000Z

228

Chronic effects of an herbicide strip treatment on habitat use by white-tailed deer (Odocoileus Virginianus) on the Rio Grande Plain, Texas  

E-Print Network [OSTI]

CHRONIC EFFECTS OF AN HERBICIDE STRIP TREATMENT ON HABITAT USE BY NHITE-TAILED DEER (ODOCO ILEUS V IRGINIANUS) ON THE RID GRANDE PLAIN, TEXAS A Thesis by ROSS SANDI FORD MCKENNEY Submitted to the Graduate Col lege of Texas ASM University... in partial fulfil lment of the requirement for the degree of MASTER OF SCIENCE December 1978 Major Subject: Wi 1dl i fe and Fisheries Sciences CHRONIC EFFECTS OF AN HERBICIDE STRIP TREATMENT ON HAB i TAT USE BY WHITE-TAILED DEER (ODOCOILEUS VIRGINIANUS...

McKenney, Ross Sandiford

2012-06-07T23:59:59.000Z

229

Early effects of an 80% herbicide strip treatment on habitat use by white-tailed deer (Odocoileus virginianus) on the Northern Rio Grande Plain, Texas  

E-Print Network [OSTI]

EARLY EFFECTS OF AN HOT HERBICIDE STRIP TREATMENT QN P~ITAT USE BY WHITE-TAILED DEER (ODOCOILEUS VIRGINIANUS) ON THE NORTHERN RIO GRANDE PLAIN, TEXAS A Thesis bv GEORGE WALDEN TAIPi~ER Submitted to the Graduate College oz Texas A&M University... in partial fulfillment of the requirement ror the d gree of MASTER OF SCIENCE August 19/6 Major Subject: Wildlife and Fisheries Sciences EARLY EFFECTS OF AN SOB HERBICIDE STRIP TREATMENT ON HABITAT USE BY WHITE-TAILED DEER (ODOCOILEUS VIRGINIANUS...

Tanner, George Walden

2012-06-07T23:59:59.000Z

230

Generalized Holographic Superconductors with Higher Derivative Couplings  

E-Print Network [OSTI]

We introduce and study generalized holographic superconductors with higher derivative couplings between the field strength tensor and a complex scalar field, in four dimensional AdS black hole backgrounds. We study this theory in the probe limit, as well as with backreaction. There are multiple tuning parameters in the theory, and with two non-zero parameters, we show that the theory has a rich phase structure, and in particular, the transition from the normal to the superconducting phase can be tuned to be of first order or of second order within a window of one of these. This is established numerically as well as by computing the free energy of the boundary theory. We further present analytical results for the critical temperature of the model, and compare these with numerical analysis. Optical properties of this system are also studied numerically in the probe limit, and our results show evidence for negative refraction at low frequencies.

Anshuman Dey; Subhash Mahapatra; Tapobrata Sarkar

2014-06-13T23:59:59.000Z

231

Characterization of uncertainties in the operation and economics of the proposed seawater desalination plant in the Gaza Strip  

Science Journals Connector (OSTI)

In the Gaza Strip, the available freshwater sources are severely polluted and overused. Desalination of seawater through reverse osmosis (RO) has become the most realistic option to meet a rapidly growing water demand. It is estimated that the Gaza Strip will need to develop a seawater desalination capacity of about 120,000 m3/d by the year 2008, and an additional 30,000 m3/d by the year 2016 in order to maintain a fresh water balance in the coastal aquifer and to fulfill the water demand for different uses in a sustainable manner. Cost and reliability of a large RO facility are still subject to much uncertainty. The cost of seawater desalination by RO systems varies with facility size and lifetime, financing conditions, intake type and pre-treatment requirements, power requirements, recovery rate, chemicals cost, spare parts cost, and membrane replacement cost. The permeate salinity is a function of feed water temperature, recovery rate, and permeate flux. The quantity of water produced depends mainly on plant size, recovery rate, and operating load factor. Many of these parameters are subject to a great deal of uncertainty. The objective of this work is to develop a probabilistic model for the simulation of seawater reverse osmosis processes using a Bayesian belief network (BBN) approach. This model represents a new application of probabilistic modeling tools to a large-scale complex system. The model is used to: (1) characterize the different uncertainties involved in the RO process; (2) optimize the RO process reliability and cost; and (3) study how uncertainty in unit capital cost, unit operation and maintenance (O&M) cost, and permeate quality is related to different input variables. The model utilizes information from journal articles, books, expert opinions, and technical reports related to the study area, and can be used to support operators and decision makers in the design of RO systems and formulation of operational policies. The structure of the model is not specific to the Gaza Strip and can be easily populated with data from any large-scale RO plant in any part of the world.

Said Ghabayen; Mac McKee; Mariush Kemblowski

2004-01-01T23:59:59.000Z

232

Poisson's ratio and porosity at Coso geothermal area, California | Open  

Open Energy Info (EERE)

Poisson's ratio and porosity at Coso geothermal area, California Poisson's ratio and porosity at Coso geothermal area, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Poisson's ratio and porosity at Coso geothermal area, California Details Activities (1) Areas (1) Regions (0) Abstract: High-resolution, three-dimensional, compressional and shear wave velocity models, derived from microearthquake traveltimes, are used to map the distribution of Poisson's ratio and porosity at Coso Geothermal Area, Inyo County, California. Spatial resolution of the three-dimensional Poisson's ratio and porosity distributions is estimated to be 0.5 km horizontally and 0.8 km vertically. Model uncertainties, + or -1% in the interior and + or -2.3% around the edge of the model, are estimated by a jackknife method. We use perturbations of r = V p /V s ratio and Psi = V p

233

Table 6.2 Consumption Ratios of Fuel, 2002  

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

2 Consumption Ratios of Fuel, 2002;" 2 Consumption Ratios of Fuel, 2002;" " Level: National and Regional Data; " " Row: Values of Shipments and Employment Sizes;" " Column: Energy-Consumption Ratios;" " Unit: Varies." ,,,"Consumption" " ",,"Consumption","per Dollar"," " " ","Consumption","per Dollar","of Value","RSE" "Economic","per Employee","of Value Added","of Shipments","Row" "Characteristic(a)","(million Btu)","(thousand Btu)","(thousand Btu)","Factors"

234

" Column: Energy-Consumption Ratios;"  

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

3 Consumption Ratios of Fuel, 2006;" 3 Consumption Ratios of Fuel, 2006;" " Level: National Data; " " Row: Values of Shipments within NAICS Codes;" " Column: Energy-Consumption Ratios;" " Unit: Varies." ,,,,"Consumption" ,,,"Consumption","per Dollar" ,,"Consumption","per Dollar","of Value" "NAICS",,"per Employee","of Value Added","of Shipments" "Code(a)","Economic Characteristic(b)","(million Btu)","(thousand Btu)","(thousand Btu)" ,,"Total United States" " 311 - 339","ALL MANUFACTURING INDUSTRIES"

235

" Column: Energy-Consumption Ratios;"  

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

3 Consumption Ratios of Fuel, 2002;" 3 Consumption Ratios of Fuel, 2002;" " Level: National Data; " " Row: Values of Shipments within NAICS Codes;" " Column: Energy-Consumption Ratios;" " Unit: Varies." " "," ",,,"Consumption"," " " "," ",,"Consumption","per Dollar" " "," ","Consumption","per Dollar","of Value","RSE" "NAICS",,"per Employee","of Value Added","of Shipments","Row" "Code(a)","Economic Characteristic(b)","(million Btu)","(thousand Btu)","(thousand Btu)","Factors"

236

GUM Analysis for TIMS and SIMS Isotopic Ratios in Graphite  

SciTech Connect (OSTI)

This report describes GUM calculations for TIMS and SIMS isotopic ratio measurements of reactor graphite samples. These isotopic ratios are used to estimate reactor burn-up, and currently consist of various ratios of U, Pu, and Boron impurities in the graphite samples. The GUM calculation is a propagation of error methodology that assigns uncertainties (in the form of standard error and confidence bound) to the final estimates.

Heasler, Patrick G.; Gerlach, David C.; Cliff, John B.; Petersen, Steven L.

2007-04-01T23:59:59.000Z

237

Dual equilibrium in a finite aspect ratio tokamak  

E-Print Network [OSTI]

achievable in conventional tokamaks. Previous research hasin a ?nite aspect ratio tokamak P. -A. Gourdain a , b ,? ,fusion reactor is the tokamak concept, a closed magnetic

Gourdain, P A

2008-01-01T23:59:59.000Z

238

13-Energy Efficiency Ratio Window Air Conditioner | Department...  

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

Window Air Conditioner 13-Energy Efficiency Ratio Window Air Conditioner Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: General Electric - Fairfield, CT...

239

Full scale field test of the in situ air stripping process at the Savannah River integrated demonstration test site  

SciTech Connect (OSTI)

Under sponsorship from the US Department of Energy, technical personnel from the Savannah River Laboratory (SRL) and other DOE laboratories, universities and private industry have completed a full scale demonstration of environmental remediation using horizontal wells. This demonstration was performed as Phase I of an Integrated Demonstration Project designed to evaluate innovative remediation technologies for environmental restoration of sites contaminated with organic contaminants. The demonstration utilized two directionally drilled horizontal wells to deliver gases and extract contaminants from the subsurface. The resulting in situ air stripping process was designed to remediate soils and sediments above and below the water table as well as groundwater contaminated with volatile organic contaminants. The 139 day long test successfully removed volatile chlorinated solvents from the subsurface using the two horizontal wells. One well, approximately 300 ft (90m) long and 165 ft (50m) deep drilled below a contaminant plume in the groundwater, was used to inject air and strip the contaminants from the groundwater. A second horizontal well, approximately 175 ft (53m) long and 75 ft (23m) deep in the vadose zone, was used to extract residual contamination in the vadose zone along with the material purged from the groundwater. Pretest and posttest characterization data and monitoring data during the demonstration were collected to aid in interpretation of the test and to provide the information needed for future environmental restoration that employ directionally drilled wells as extraction or delivery systems. Contaminant concentration data and microbiological monitoring data are summarized in this report; the characterization data and geophysical monitoring data are documented in a series of related project reports.

Looney, B.B.; Hazen, T.C.; Kaback, D.S.; Eddy, C.A.

1991-06-29T23:59:59.000Z

240

Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph–catenary systems  

Science Journals Connector (OSTI)

A series of tests on friction and wear performance of pure copper rubbing against carbon strip under electric current have been carried out on a modified pin-on-disc friction and wear tester. The results indicate that there are temperature rise and arc discharge in the electrical sliding processes. The temperature rise of contact pairs and the intensity of arc discharge increase with the increasing of electric current. However, the friction coefficient increases firstly due to the accumulation of wear debris, and then decreases with the increasing of electric current due to the accumulation of electric heat and friction heat on contact interface. The increase in wear volume of the carbon strip is mainly caused by high temperature of contact pairs and arc discharge phenomenon. The test results also show that the wear volume of pin specimen with arc discharge is much greater than that without arc discharge under the same temperature. Therefore, the thermal wear due to high temperature has a distinct influence on the service life of pantograph contact strip and arc erosion even has more significant influence. Cooling measures should be applied in pantograph/catenary systems. Especially, off-line arc discharge of the contact couple should be suppressed to the maximum extent to extend the service life of pantograph contact strip.

T. Ding; G.X. Chen; J. Bu; W.H. Zhang

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

The 16OH/18OH and OD/OH isotope ratios in comet C/2002 T7 (LINEAR)  

E-Print Network [OSTI]

The 16OH/18OH and OD/OH isotope ratios are measured in the Oort-Cloud comet C/2002 T7 (LINEAR) through ground-based observations of the OH ultraviolet bands at 3063 A (0,0) and 3121 A (1,1) secured with the Very Large Telescope (VLT) feeding the Ultraviolet-Visual Echelle Spectrograph (UVES). From the 16OH/18OH ratio, we find 16O/18O = 425 +/- 55, equal within the uncertainties to the terrestrial value and to the ratio measured in other comets, although marginally smaller. We also estimate OD/OH from which we derive D/H = 2.5 +/- 0.7 10-4 in water. This value is compatible with the water D/H ratios evaluated in other comets and marginally higher than the terrestrial value.

D. Hutsemekers; J. Manfroid; E. Jehin; J. -M. Zucconi; C. Arpigny

2008-09-25T23:59:59.000Z

242

Application of information (new media) technology in Japanese higher education  

Science Journals Connector (OSTI)

Japanese higher education and higher education institutions are facing rapid changes in the social/systemic environment and are expected to rise to the challenge and leap forward.

Prof. Dr. Takeshi Kikukawa

2000-01-01T23:59:59.000Z

243

Recovery Act: Wind Energy Consortia between Institutions of Higher...  

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

Recovery Act: Wind Energy Consortia between Institutions of Higher Learning and Industry Recovery Act: Wind Energy Consortia between Institutions of Higher Learning and Industry A...

244

Electromagnetic Casimir piston in higher dimensional spacetimes  

E-Print Network [OSTI]

We consider the Casimir effect of the electromagnetic field in a higher dimensional spacetime of the form $M\\times \\mathcal{N}$, where $M$ is the 4-dimensional Minkowski spacetime and $\\mathcal{N}$ is an $n$-dimensional compact manifold. The Casimir force acting on a planar piston that can move freely inside a closed cylinder with the same cross section is investigated. Different combinations of perfectly conducting boundary conditions and infinitely permeable boundary conditions are imposed on the cylinder and the piston. It is verified that if the piston and the cylinder have the same boundary conditions, the piston is always going to be pulled towards the closer end of the cylinder. However, if the piston and the cylinder have different boundary conditions, the piston is always going to be pushed to the middle of the cylinder. By taking the limit where one end of the cylinder tends to infinity, one obtains the Casimir force acting between two parallel plates inside an infinitely long cylinder. The asymptotic behavior of this Casimir force in the high temperature regime and the low temperature regime are investigated for the case where the cross section of the cylinder in $M$ is large. It is found that if the separation between the plates is much smaller than the size of $\\mathcal{N}$, the leading term of the Casimir force is the same as the Casimir force on a pair of large parallel plates in the $(4+n)$-dimensional Minkowski spacetime. However, if the size of $\\mathcal{N}$ is much smaller than the separation between the plates, the leading term of the Casimir force is $1+h/2$ times the Casimir force on a pair of large parallel plates in the 4-dimensional Minkowski spacetime, where $h$ is the first Betti number of $\\mathcal{N}$. In the limit the manifold $\\mathcal{N}$ vanishes, one does not obtain the Casimir force in the 4-dimensional Minkowski spacetime if $h$ is nonzero.

L. P. Teo

2011-02-22T23:59:59.000Z

245

Revisit of the neutron/proton ratio puzzle in intermediate-energy heavy-ion collisions  

E-Print Network [OSTI]

Incorporating a newly improved isospin- and momentum-dependent interaction in the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model IBUU11, we have investigated relative effects of the density dependence of nuclear symmetry energy $E_{sym}(\\rho)$ and the neutron-proton effective mass splitting $m^*_n-m^*_p$ on the neutron/proton ratio of free nucleons and those in light clusters. It is found that the $m^*_n-m^*_p$ has a relatively stronger effect than the $E_{sym}(\\rho)$ and the assumption of $m^*_n\\leq m^*_p$ leads to a higher neutron/proton ratio. Moreover, this finding is independent of the in-medium nucleon-nucleon cross sections used. However, results of our calculations using the $E_{sym}(\\rho)$ and $m^*_n-m^*_p$ both within their current uncertainty ranges are all too low compared to the recent NSCL/MSU double neutron/proton ratio data from central $^{124}$Sn+$^{124}$Sn and $^{112}$Sn+$^{112}$Sn collisions at 50 and 120 MeV/u, thus calling for new mechanisms to explain the puzzlingly high neutron/proton ratio observed in the experiments.

Hai-Yun Kong; Yin Xia; Jun Xu; Lie-Wen Chen; Bao-An Li; Yu-Gang Ma

2015-02-03T23:59:59.000Z

246

IEA Workshop 59 Shape and Aspect Ratio Optimization for  

E-Print Network [OSTI]

IEA Workshop 59 Shape and Aspect Ratio Optimization for High Beta, Steady-State Tokamak SCOPE tokamak DEMO reactor. Many present tokamaks are addressing such operation for ITER and DEMO. Shape and aspect ratio is particularly important for achieving high beta and also for the optimization of edge

247

Spatial variation of void ratio and shear band thickness in sand using X-ray computed tomography  

SciTech Connect (OSTI)

A detailed study of spatial variation of void ratio and shear band thickness measurements is presented in this paper. A prismatic sand specimen that initially measured 57{center_dot}4 mm wide x 120{center_dot}5 mm long x 182{center_dot}1 mm high was sheared under plane-strain (biaxial) loading conditions. The specimen was prepared at a relative density of 79% using F-75 Ottawa sand. X-ray computed tomography was used to scan the specimen before shearing and after the onset of the shear band. The specimen failed through a single shear band with an inclination angle of 65{center_dot}6{sup o} measured from the direction of the minor principal stress. Computer algorithms were developed to calibrate CT images and quantify void ratio (e) variation within the specimen. CT data analysis revealed cross-sectional spatial variation in void ratio where density is higher in regions close to the edges of the specimen due to membrane effects and confining pressure with no significant variation in void ratio in the axial direction (top to bottom) before shearing. The shear band was easily identified from the CT images, and analysis of void ratio showed a noticeable jump in void ratio profile across the shear band. A detailed statistical summary of the thickness of the shear band and variation of void ratio across the shear band is presented and discussed.

Alshibli, K.A.; Hasan, A. (LSU)

2008-05-01T23:59:59.000Z

248

European Responses to Global Competitiveness in Higher Education  

E-Print Network [OSTI]

application of information and communications technology (ICT) in the service sector (13). Looking at higher education,

Marijk van der Wende

2009-01-01T23:59:59.000Z

249

Prominence seismology using the period ratio of transverse thread oscillations  

E-Print Network [OSTI]

The ratio of the period of the fundamental mode to that of the first overtone of kink oscillations, from here on the "period ratio", is a seismology tool that can be used to infer information about the spatial variation of density along solar magnetic flux tubes. The period ratio is 2 in longitudinally homogeneous thin tubes, but it differs from 2 due to longitudinal inhomogeneity. In this paper we investigate the period ratio in longitudinally inhomogeneous prominence threads and explore its implications for prominence seismology. We numerically solve the two-dimensional eigenvalue problem of kink oscillations in a model of a prominence thread. We take into account three nonuniform density profiles along the thread. In agreement with previous works that used simple piecewise constant density profiles, we find that the period ratio is larger than 2 in prominence threads. When the ratio of the central density to that at the footpoints is fixed, the period ratio depends strongly on the form of the density profi...

Soler, R; Ballester, J L

2015-01-01T23:59:59.000Z

250

Energetic and exergetic analyses of a variable compression ratio spark ignition gas engine  

Science Journals Connector (OSTI)

Abstract Considering the significance of obtaining higher efficiencies from internal combustion engines (ICE) along with the growing role of natural gas as a fuel, the present work is set to explore the effects of compression ratio (CR hereafter) and air/fuel equivalence ratio (AFER hereafter) on the energy and exergy potentials in a gas-fueled spark ignition internal combustion engine. Experiments are carried out using a single cylinder, port injection, water cooled, variable compression ratio (VCR hereafter), spark ignition engine at a constant engine speed of 2000 rpm. The study involves \\{CRs\\} of 12, 14 and 16 and 10 \\{AFERs\\} between 0.8 and 1.25. Pure methane is utilized for the analysis. In addition, a natural gas blend with the minimum methane content among Iranian gas sources is also tested in order to investigate the effect of real natural gas on findings. The energy analysis involves input fuel power, indicated power and losses due to high temperature of exhaust gases and their unburned content, blow-by and heat loss. The exergy analysis is carried out for availability input and piston, exhaust, and losses availabilities along with destructed entropy. The analysis indicates an increase in the ratio of thermo-mechanical exhaust availability to fuel availability by CR with a maximum near stoichiometry, whereas it is shown that chemical exhaust exergy is not dependent on CR and reduces with AFER. In addition, it is indicated that the ratio of actual cycle to Otto cycle thermal efficiencies is about constant (about 0.784) with changing CR, AFER and CNG fuel used.

A. Javaheri; V. Esfahanian; A. Salavati-Zadeh; M. Darzi

2014-01-01T23:59:59.000Z

251

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone  

Open Energy Info (EERE)

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Drill Cores Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Drill Cores Details Activities (3) Areas (1) Regions (0) Abstract: Oxygen and carbon isotope ratios were measured for hydrothermal minerals (silica, clay and calcite) from fractures and vugs in altered rhyolite, located between 28 and 129 m below surface (in situ temperatures ranging from 81 to 199°C) in Yellowstone drill holes. The purpose of this study was to investigate the mechanism of formation of these minerals. The Δ18O values of the thirty-two analyzed silica samples (quartz, chalcedony, α-cristobalite, and β-cristobalite) range from -7.5 to +2.8‰. About one

252

The Ne/O abundance ratio in the quiet Sun  

E-Print Network [OSTI]

Aims: To determine the neon-to-oxygen abundance in the quiet Sun, a proxy for the photospheric abundance ratio. Method: An emission measure method applied to extreme ultraviolet emission lines of Ne IV-VI and O III-V ions observed by the Coronal Diagnostic Spectrometer on the SOHO satellite. Results: The average Ne/O abundance ratio in supergranule cell centre regions is 0.18 +/- 0.05, while in supergranule network regions is 0.16 +/- 0.04. A photospheric Ne/O ratio of 0.17 +/- 0.05 is suggested, in good agreement with the most recent compilation of solar photospheric abundances, but discrepant with a recent Ne/O ratio derived from stellar X-ray spectra and revised neon abundances suggested from solar interior models.

P. R. Young

2005-10-10T23:59:59.000Z

253

Development of High Expansion Ratio Helium Turbo Expander  

Science Journals Connector (OSTI)

The authors developed a high expansion ratio radial inflow turbine for a helium liquefier of 100 L/h capacity for use with a 70 MW superconductive generator. The following results were obtained from this devel...

N. Ino; A. Machida; K. Ttsugawa; Y. Arai; M. Matsuki…

1991-01-01T23:59:59.000Z

254

TOKAMAK REACTOR DESIGNS AS A FUNCTION OF ASPECT RATIO  

E-Print Network [OSTI]

GA­A23168 TOKAMAK REACTOR DESIGNS AS A FUNCTION OF ASPECT RATIO by C.P.C. WONG and R.D. STAMBAUGH or reflect those of the United States Government or any agency thereof. #12;GA­A23168 TOKAMAK REACTOR DESIGNS JULY 1999 #12;C.P.C. WONG AND R.D. STAMBAUGH TOKAMAK REACTOR DESIGNS AS A FUNCTION OF ASPECT RATIO

California at Los Angeles, University of

255

The E2/M1 ratio in {Delta} photoproduction  

SciTech Connect (OSTI)

New high-precision measurements of p({rvec {gamma}}, {pi}) and p({rvec {gamma}}, {gamma}) cross sections and beam asymmetries have been combined with other polarization ratios in a simultaneous analysis of both reactions. The E2/M1 mixing ratio for the n {r_arrow} {Delta} transition extracted from this analysis is EMR = {minus}3.0% {+-} 0.3 (stat+sys) {+-} 0.2 (model).

Hoblit, S. [Brookhaven National Lab., Upton, NY (United States). Physics Dept.]|[Univ. of Virginia, Charlottesville, VA (United States). Dept. of Physics; Blanpied, G. [Univ. of South Carolina, Columbia, SC (United States). Dept. of Physics; Blecher, M. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States). Physics Dept.] [and others; LEGS Collaboration

1997-10-01T23:59:59.000Z

256

Surface waves in multilayered elastic media. Part II. Higher mode spectra and spectral ratios from point sources in plane layered Earth models  

Science Journals Connector (OSTI)

...10- -0.~0~TTEr00 -0.18161E 0l SURFACE WAVES IN MULTILAYERED ELASTIC ~EDIA TABLE 18 OCEAN 1965 DISPLACEMENT AND STRESS RA1IOS AT A DEPTH OF 150 KN RAYLEIGH LOVE . . . . . . . . . . . . . ~oo...

David G. Harkrider

257

Enhanced radiation of an invisible array of sources through a sub-wavelength metal-strip grating and applications  

Science Journals Connector (OSTI)

We experimentally demonstrate dramatically increased radiation from an “invisible” source placed next to a sub-wavelength metal strip grating. The invisible source is a novel highly reactive array of antennas excited by a common feed which weakly radiates in the far-zone. The metal grating used is sub-wavelength and non-resonant which typically attenuates the overall radiation of a nearby source especially in the transverse electric polarization. However we show that such a grating screen with proper dimensions placed next to the “invisible” source can in fact significantly enhance the radiated field strength far beyond the free space radiation of this “invisible” radiator by an order of magnitude. This radiation enhancement is facilitated through the conversion of evanescent waves of the specially designed reactive source into propagating waves and its level is inversely related to the source-grating distance. The physical phenomenon is shown in simulations and measurements at microwaves. This novel radiation enhancement effect is shown to have potential applications in various areas such as proximity sensing detection and measurement of distance.

M. Memarian

2013-01-01T23:59:59.000Z

258

Evidence for correlated pair transfer of valence nucleons in multiparticle stripping channels in the 18O+174Yb reaction  

Science Journals Connector (OSTI)

The single and multinucleon transfer cross sections in 16O, 18O+174Yb reactions were measured at Elab=83?MeV bombarding energy. The data were analyzed to obtain the variation of transfer cross sections with the number of nucleons transferred from the projectile to the target nucleus, and with respect to the ground state Q value (Qgg) of the transfer reaction. In 18O+174Yb reaction, the two-neutron stripping and the two-neutron correlated cluster transfer cross sections are strongly enhanced as compared to the 16O +174Yb reaction. The results have been discussed on the basis of the possible influence of the valence neutrons in the 18O nucleus on multiparticle transfer cross sections. The transfer probabilities of multinucleon transfers have been analyzed as a function of distance of closest approach and the results for two-neutron transfer is consistent with the supposition of correlated pair transfer of valence nucleons in the 18O+174Yb reaction.

P. K. Sahu; R. K. Choudhury; D. C. Biswas; B. K. Nayak

2001-06-14T23:59:59.000Z

259

Development of Large Format Lithium Ion Cells with Higher Energy...  

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

Large Format Lithium Ion Cells with Higher Energy Density Exceeding 500WhL Development of Large Format Lithium Ion Cells with Higher Energy Density Exceeding 500WhL 2012 DOE...

260

Logical Effort of Higher Valency Adders David Harris  

E-Print Network [OSTI]

Logical Effort of Higher Valency Adders David Harris Harvey Mudd College 301 E. Twelfth St. Claremont, CA 91711 David_Harris@hmc.edu Abstract ­ Higher valency parallel prefix adders reduce the number

Harris, David Money

Note: This page contains sample records for the topic "higher stripping ratios" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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261

Influence of adaptive mesh refinement and the hydro solver on shear-induced mass stripping in a minor-merger scenario  

E-Print Network [OSTI]

We compare two different codes for simulations of cosmological structure formation to investigate the sensitivity of hydrodynamical instabilities to numerics, in particular, the hydro solver and the application of adaptive mesh refinement (AMR). As a simple test problem, we consider an initially spherical gas cloud in a wind, which is an idealized model for the merger of a subcluster or galaxy with a big cluster. Based on an entropy criterion, we calculate the mass stripping from the subcluster as a function of time. Moreover, the turbulent velocity field is analyzed with a multi-scale filtering technique. We find remarkable differences between the commonly used PPM solver with directional splitting in the Enzo code and an unsplit variant of PPM in the Nyx code, which demonstrates that different codes can converge to systematically different solutions even when using uniform grids. For the test case of an unbound cloud, AMR simulations reproduce uniform-grid results for the mass stripping quite well, although...

Schmidt, W; Iapichino, L; Vazza, F; Almgren, A S

2014-01-01T23:59:59.000Z

262

One-step signal amplified lateral flow strip biosensor for ultrasensitive and on-site detection of bisphenol A (BPA) in aqueous samples  

Science Journals Connector (OSTI)

Abstract A one-step signal amplified lateral flow strip (LFS) biosensor has been developed for ultrasensitive and on-site visual detection of bisphenol A (BPA). This signal amplified LFS was based on the dual labeling using different-sized gold nanoparticles (Duo-LFS). This Duo-LFS could achieve BPA detection with 0.5 ng/mL as the visual sensitivity by naked eye observation and with 0.076 ng/mL as the limit of detection (LOD) for semi-quantitative detection by software analysis, which is at least 10-fold improvement of the sensitivity of traditional LFS based methods. This one-step signal amplified lateral flow strip biosensor and related signal enhancement method could be adopted as a potential generous technique for all LFS-based detection methods.

Zhanlong Mei; Wei Qu; Yi Deng; Huaqin Chu; Jinxuan Cao; Feng Xue; Lei Zheng; Hani Said El-Nezamic; Yucheng Wu; Wei Chen

2013-01-01T23:59:59.000Z

263

Revisit of the neutron/proton ratio puzzle in intermediate-energy heavy-ion collisions  

E-Print Network [OSTI]

Incorporating a newly improved isospin- and momentum-dependent interaction in the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model IBUU11, we have investigated relative effects of the density dependence of nuclear symmetry energy $E_{sym}(\\rho)$ and the neutron-proton effective mass splitting $m^*_n-m^*_p$ on the neutron/proton ratio of free nucleons and those in light clusters. It is found that the $m^*_n-m^*_p$ has a relatively stronger effect than the $E_{sym}(\\rho)$ and the assumption of $m^*_n\\leq m^*_p$ leads to a higher neutron/proton ratio. Moreover, this finding is independent of the in-medium nucleon-nucleon cross sections used. However, results of our calculations using the $E_{sym}(\\rho)$ and $m^*_n-m^*_p$ both within their current uncertainty ranges are all too low compared to the recent NSCL/MSU double neutron/proton ratio data from central $^{124}$Sn+$^{124}$Sn and $^{112}$Sn+$^{112}$Sn collisions at 50 and 120 MeV/u, thus calling for new mechanisms to explain the puzzlingly high n...

Kong, Hai-Yun; Xu, Jun; Chen, Lie-Wen; Li, Bao-An; Ma, Yu-Gang

2015-01-01T23:59:59.000Z

264

Bench-Scale Development of a Hot Carbonate Absorption Process with Crystallization-Enabled High Pressure Stripping for Post-Combustion CO2 Capture  

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

Development of a Hot Development of a Hot Carbonate Absorption Process with Crystallization-Enabled High Pressure Stripping for Post-Combustion CO 2 Capture Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same

265

Simplified higher-order Boussinesq equations I. Linear simplifications  

E-Print Network [OSTI]

Simplified higher-order Boussinesq equations I. Linear simplifications Andrew B. Kennedy a,*, James derive and test simplified higher-order Boussinesq equations, i.e., higher-order Boussinesq equations Science B.V. All rights reserved. Keywords: Boussinesq equations; Dispersion; Shoaling 1. Introduction

Kirby, James T.

266

Fresh Water Increased temperature means higher proportion of water  

E-Print Network [OSTI]

Fresh Water Increased temperature means higher proportion of water falling on surface higher evaporation higher rainfall greater intensity of floods and droughts. Water use has grown four on How much storage compared to average flow Demand as percentage of supply How much ground water is used

Houston, Paul L.

267

Evidence of Self-correction of Child Sex Ratios in India: A District-Level Analysis of Child Sex Ratios From 1981 to 2011  

Science Journals Connector (OSTI)

Sex ratios in India have become increasingly imbalanced over the past decades. We hypothesize that when sex ratios become very uneven, the shortage of girls will increase girls’ future value, leading sex ratio...

Nadia Diamond-Smith; David Bishai

2014-12-01T23:59:59.000Z

268

On higher derivatives in 3D gravity and higher-spin gauge theories  

SciTech Connect (OSTI)

The general second-order massive field equations for arbitrary positive integer spin in three spacetime dimensions, and their 'self-dual' limit to first-order equations, are shown to be equivalent to gauge-invariant higher-derivative field equations. We recover most known equivalences for spins 1 and 2, and find some new ones. In particular, we find a non-unitary massive 3D gravity theory with a 5th order term obtained by contraction of the Ricci and Cotton tensors; this term is part of an N=2 super-invariant that includes the 'extended Chern-Simons' term of 3D electrodynamics. We also find a new unitary 6th order gauge theory for 'self-dual' spin 3.

Bergshoeff, Eric A. [Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands)], E-mail: E.A.Bergshoeff@rug.nl; Hohm, Olaf [Centre for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States)], E-mail: ohohm@mit.edu; Townsend, Paul K. [Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA (United Kingdom)], E-mail: P.K.Townsend@damtp.cam.ac.uk

2010-05-15T23:59:59.000Z

269

The muon charge ratio in cosmic ray air showers  

E-Print Network [OSTI]

The muon charge ratio of the lateral muon density distributions in single EAS is studied by simulations, in context of recent proposals to measure this observable in coincidence with EAS observations. While effects of the hadronic interaction do not lead to significant differences of the total muon plus and muon minus content, the differences of the azimuthal variation of the muon densities of opposite charges and the azimuthal variation of the muon charge ratio appear to be very much pronounced, dependent on the direction of EAS incidence. This is due to the influence of the geomagnetic field which induces related effects in radio emission from extended air showers.

H. Rebel; O. Sima; A. Haungs; C. Manailescu; B. Mitrica; C. Morariu

2008-06-29T23:59:59.000Z

270

RESULTS OF THE EXTRACTION-SCRUB-STRIP TESTING USING AN IMPROVED SOLVENT FORMULATION AND SALT WASTE PROCESSING FACILITY SIMULATED WASTE  

SciTech Connect (OSTI)

The Office of Waste Processing, within the Office of Technology Innovation and Development, is funding the development of an enhanced solvent - also known as the next generation solvent (NGS) - for deployment at the Savannah River Site to remove cesium from High Level Waste. The technical effort is a collaborative effort between Oak Ridge National Laboratory (ORNL) and Savannah River National Laboratory (SRNL). As part of the program, the Savannah River National Laboratory (SRNL) has performed a number of Extraction-Scrub-Strip (ESS) tests. These batch contact tests serve as first indicators of the cesium mass transfer solvent performance with actual or simulated waste. The test detailed in this report used simulated Tank 49H material, with the addition of extra potassium. The potassium was added at 1677 mg/L, the maximum projected (i.e., a worst case feed scenario) value for the Salt Waste Processing Facility (SWPF). The results of the test gave favorable results given that the potassium concentration was elevated (1677 mg/L compared to the current 513 mg/L). The cesium distribution value, DCs, for extraction was 57.1. As a comparison, a typical D{sub Cs} in an ESS test, using the baseline solvent formulation and the typical waste feed, is {approx}15. The Modular Caustic Side Solvent Extraction Unit (MCU) uses the Caustic-Side Solvent Extraction (CSSX) process to remove cesium (Cs) from alkaline waste. This process involves the use of an organic extractant, BoBCalixC6, in an organic matrix to selectively remove cesium from the caustic waste. The organic solvent mixture flows counter-current to the caustic aqueous waste stream within centrifugal contactors. After extracting the cesium, the loaded solvent is stripped of cesium by contact with dilute nitric acid and the cesium concentrate is transferred to the Defense Waste Processing Facility (DWPF), while the organic solvent is cleaned and recycled for further use. The Salt Waste Processing Facility (SWPF), under construction, will use the same process chemistry. The Office of Waste Processing (EM-31) expressed an interest in investigating the further optimization of the organic solvent by replacing the BoBCalixC6 extractant with a more efficient extractant. This replacement should yield dividends in improving cesium removal from the caustic waste stream, and in the rate at which the caustic waste can be processed. To that end, EM-31 provided funding for both the Savannah River National Laboratory (SRNL) and the Oak Ridge National Laboratory (ORNL). SRNL wrote a Task Technical Quality and Assurance Plan for this work. As part of the envisioned testing regime, it was decided to perform an ESS test using a simulated waste that simulated a typical envisioned SWPF feed, but with added potassium to make the waste more challenging. Potassium interferes in the cesium removal, and its concentration is limited in the feed to <1950 mg/L. The feed to MCU has typically contained <500 mg/L of potassium.

Peters, T.; Washington, A.; Fink, S.

2012-01-09T23:59:59.000Z

271

Branching ratios for the beta decay of Na-21  

E-Print Network [OSTI]

We have measured the beta-decay branching ratio for the transition from Na-21 to the first excited state of Ne-21. A recently published test of the standard model, which was based on a measurement of the beta-nu correlation in the decay of Na-21...

Iacob, V. E.; Hardy, John C.; Gagliardi, Carl A.; Goodwin, J.; Nica, N.; Park, H. I.; Tabacaru, G.; Trache, L.; Tribble, Robert E.; Zhai, Y.; Towner, I. S.

2006-01-01T23:59:59.000Z

272

A genetically encoded fluorescent reporter of ATP:ADP ratio  

E-Print Network [OSTI]

A genetically encoded fluorescent reporter of ATP:ADP ratio Jim Berg1,2, Yin Pun Hung1 & Gary's affinity for Mg-ATP was o100 nM, as seen for other members of the bacterial PII regulator family, a surprisingly high affinity given that normal intracellular ATP concentration is in the millimolar range. ADP

Yellen, Gary

273

Application of Resource-Ratio Theory to Hydrocarbon Biodegradation  

Science Journals Connector (OSTI)

Application of Resource-Ratio Theory to Hydrocarbon Biodegradation ... We suggest that the procedures outlined here can be used to help guide practical decisions about the nutrients that are most likely to be growth-limiting and help define the subsequent nutrient application rates. ...

Val H. Smith; David W. Graham; Dale D. Cleland

1998-09-12T23:59:59.000Z

274

Magnesium Isotope Ratios in omega Centauri Red Giants  

E-Print Network [OSTI]

We have used high resolution observations obtained at the AAT with UHRF (R ~ 100,000) and at Gemini-S with b-HROS (R ~ 150,000) to determine magnesium isotope ratios for seven omega Centauri red giants that cover a range in iron abundance from [Fe/H] = --1.78 to --0.78 dex, and for two red giants in M4 (NGC 6121). The omega Centauri stars sample both the "primordial" (i.e., O-rich, Na and Al-poor) and the "extreme" (O-depleted, Na and Al-rich) populations in the cluster. The primordial population stars in both omega Centauri and M4 show (25Mg, 26Mg)/24 Mg isotopic ratios that are consistent with those found for the primordial population in other globular clusters with similar [Fe/H] values. The isotopic ratios for the omega Centauri extreme stars are also consistent with those for extreme population stars in other clusters. The results for the extreme population stars studied indicate that the 26Mg/24Mg ratio is highest at intermediate metallicities ([Fe/H] < --1.4 dex), and for the highest [Al/Fe] values....

Da Costa, G S; Yong, David

2013-01-01T23:59:59.000Z

275

Design studies of low aspect ratio quasi-omnigenous stellarators  

E-Print Network [OSTI]

optimization principles for the design of a more attractive reactor. These are 3 and 4 field period low aspect ratio quasi-omnigenous stellarators based on an optimization method that aims at improved confinement stability boundaries. 1. Configuration optimization The development of increasingly sophisticated

Martín-Solís, José Ramón

276

Holographic study of conventional and negative Poisson's ratio metallic foams  

E-Print Network [OSTI]

. Inhomogeneous, non-affine deformation was observed holographically in both foam materials. Introduction in this series were determined from displacement measurements of high magnification video tapes of the tensile a very useful and reliable tool to determine the Poisson's ratio of orthotropic FRP (Fiber Reinforced

Lakes, Roderic

277

Measurement of Branching Ratio for K+?e+?  

Science Journals Connector (OSTI)

Using a 2?-sr magnetic spectrometer, the branching ratio for K+?e+? relative to that for K+??+? has been measured to be (2.42 ± 0.42) × 10-5, in good agreement with the predictions of the V-A theory.

A. R. Clark, Bruce Cork, T. Elioff, L. T. Kerth, J. F. McReynolds, David Newton, and W. A. Wenzel

1972-10-30T23:59:59.000Z

278

LITERATURE SURVEY ON ISOTOPIC ABUNDANCE RATIO MEASUREMENTS - 2001-2005  

SciTech Connect (OSTI)

Along with my usual weekly review of the published literature for new nuclear data, I also search for new candidates for best measurements of isotopic abundances from a single source. Most of the published articles, that I previously had found in the Research Library at the Brookhaven Lab, have already been sent to the members of the Atomic Weights Commission, by either Michael Berglund or Thomas Walczyk. In the last few days, I checked the published literature for any other articles in the areas of natural variations in isotopic abundance ratios, measurements of isotopic abundance ratios on samples of extra-terrestrial material and isotopic abundance ratio measurements performed using ICPMS instruments. Hopefully this information will be of interest to members of the Commission, the sub-committee on isotopic abundance measurements (SIAM), members of the former sub-committee on natural isotopic fractionation (SNIF), the sub-committee on extra-terrestrial isotope ratios (SETIR), the RTCE Task Group and the Guidelines Task Group, who are dealing with ICPMS and TIMS comparisons. In the following report, I categorize the publications in one of four areas. Measurements performed using either positive or negative ions with Thermal Ionization Mass Spectrometer, TIMS, instruments; measurements performed on Inductively Coupled Plasma Mass Spectrometer, ICPMS, instruments; measurements of natural variations of the isotopic abundance ratios; and finally measurements on extra-terrestrial samples with instrumentation of either type. There is overlap in these areas. I selected out variations and ET results first and then categorized the rest of the papers by TIMS and ICPMS.

HOLDEN, N.E.

2005-08-13T23:59:59.000Z

279

The Proton Form Factor Ratio Measurements at Jefferson Lab  

SciTech Connect (OSTI)

The ratio of the proton form factors, G{sub Ep}/G{sub Mp}, has been measured from Q{sup 2} of 0.5 GeV{sup 2} to 8.5 GeV{sup 2}, at the Jefferson Laboratory, using the polarization transfer method. This ratio is extracted directly from the measured ratio of the transverse and longitudinal polarization components of the recoiling proton in elastic electron-proton scattering. The discovery that the proton form factor ratio measured in these experiments decreases approximately linearly with four-momentum transfer, Q{sup 2}, for values above #25;~1 GeV{sup 2}, is one of the most significant results to come out of JLab. These results have had a large impact on progress in hadronic physics; and have required a significant rethinking of nucleon structure. The increasingly common use of the double-polarization technique to measure the nucleon form factors, in the last 15 years, has resulted in a dramatic improvement of the quality of all four nucleon electromagnetic form factors, G{sub Ep}, G{sub Mp}, G{sub En} and G{sub Mn}. There is an approved experiment at JLab, GEP(V), to continue the ratio measurements to 12 GeV{sup 2}. A dedicated experimental setup, the Super Bigbite Spectrometer (SBS), will be built for this purpose. It will be equipped with a focal plane polarimeter to measure the polarization of the recoil protons. The scattered electrons will be detected in an electromagnetic calorimeter. In this presentation, I will review the status of the proton elastic electromagnetic form factors and discuss a number of theoretical approaches to describe nucleon form factors.

Punjabi, Vina A. [Norfolk State University, Norfolk, VA (United States); Perdrisat, Charles F. [William and Mary College, Williamsburg, VA (United States)

2014-03-01T23:59:59.000Z

280

Developing a Lower Cost and Higher Energy Density Alternative...  

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

for Advanced Batteries ADVANCED MANUFACTURING OFFICE Developing a Lower Cost and Higher Energy Density Alternative to Lithium-Ion Batteries Introduction As the world moves toward...

Note: This page contains sample records for the topic "higher stripping ratios" 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

HIGHER-ORDER MODELING AND AUTOMATED DESIGN-SPACE EXPLORATION  

E-Print Network [OSTI]

the second requires the exis- tence of an automated process for design space exploration. There are many waysHIGHER-ORDER MODELING AND AUTOMATED DESIGN-SPACE EXPLORATION J¨orn W. Janneck EECS Department exploration, exploratory simula- tion, performance evaluation, higher-order models ABSTRACT An important part

Esser, Robert

282

STATE OF COLORADO DEPARTMENT OF HIGHER EDUCATION John Hickenlooper  

E-Print Network [OSTI]

STATE OF COLORADO DEPARTMENT OF HIGHER EDUCATION John Hickenlooper Governor Lt. Gov. Joseph A. Garcia Executive Director 1560 Broadway, Suite 1600, Denver, Colorado 80202 (303) 866-2723 fax (303) 866-4266 http://highered.colorado.gov STATEWIDE TRANSFER ARTICULATION AGREEMENT for a Bachelor of Arts

283

STATE OF COLORADO DEPARTMENT OF HIGHER EDUCATION John Hickenlooper  

E-Print Network [OSTI]

STATE OF COLORADO DEPARTMENT OF HIGHER EDUCATION John Hickenlooper Governor Lt. Gov. Joseph A. Garcia Executive Director 1560 Broadway, Suite 1600, Denver, Colorado 80202 (303) 866-2723 fax (303) 866-4266 http://highered.colorado.gov STATEWIDE TRANSFER ARTICULATION AGREEMENT for a Bachelor

284

Compiling Higher Order Functional Programs to Composable Digital Hardware  

Science Journals Connector (OSTI)

This work demonstrates the capabilities of a high-level synthesis tool-chain that allows the compilation of higher order functional programs to gate-level hardware descriptions. Higher order programming allows functions to take functions as parameters. ... Keywords: functional programming, fpga, compiler

Eduardo Aguilar Pelaez, Samuel Bayliss, Alex Smith, Felix Winterstein, Dan R. Ghica, David Thomas, George A. Constantinides

2014-05-01T23:59:59.000Z

285

Teacher Education Assistance for College and Higher Education Grant  

E-Print Network [OSTI]

1 Teacher Education Assistance for College and Higher Education Grant (TEACH Grant) Initial and Subsequent Counseling Guide June 16, 2009 #12;2 Overview What is the TEACH Grant Program? The U.S. Department of Education's Teacher Education Assistance for College and Higher Education Grant (TEACH Grant) Program

Hardy, Christopher R.

286

After several tough years, Colorado's public higher education institutions  

E-Print Network [OSTI]

education -- toward zero sometime in the next 10 to 12 years. We're not alone. Thomas Mortenson, in his fiscal support for higher education will reach zero by 2059, al- though it could happen much sooner in years -- the total budget for higher education will be about $543 million. That's still a net decrease

Rutledge, Steven

287

Semantics and scoping of aspects in higher-order languages  

Science Journals Connector (OSTI)

Aspect-oriented software design will need to support languages with first-class and higher-order procedures, such as Ruby, Perl, ML and Scheme. These language features present both challenges and benefits for aspects. On the one hand, they force the ... Keywords: CEKS, abstract machine, advice, aspect, higher-order, join point, pointcut, scheme

Christopher Dutchyn; David B. Tucker; Shriram Krishnamurthi

2006-12-01T23:59:59.000Z

288

Use of vodcasting in higher education to improve student learning  

Science Journals Connector (OSTI)

In several countries the curricula for the different degrees of the universities is changing to adapt it to the Anglo-Saxon model of four years. In this context, several degrees must reduce the hours for classroom and this affects in a higher way to ... Keywords: educational innovation, higher education, information in electronic form, knowledge, learning, video podcast, vodcast, vodcasting

Javier Bilbao; Eugenio Bravo; Olatz García; Concepción Varela; Purificación González; Izaskun Baro; Miguel Rodríguez

2010-02-01T23:59:59.000Z

289

HigherOrder Colored Unification: A Linguistic Application  

E-Print Network [OSTI]

. In sentence (1) for instance, the meaning of the elliptical verb phrase (VP) does is the property of "likingRECHERCHE Higher­Order Colored Unification: A Linguistic Application Claire Gardent Michael the last decade, Higher-Order unification (HOU) has become a popular tool for constructing the semantic

Kohlhase, Michael

290

Optical absorption spectra and geometric e ects in higher fullerenes  

E-Print Network [OSTI]

Optical absorption spectra and geometric e ects in higher fullerenes (Running head: Optical absorption in higher fullerenes) Kikuo Harigaya and Shuji Abe Physical Science Division, Electrotechnical of their amplitudes at the pentagons. The oscillator strengths of projected absorption almost accord with those

Harigaya, Kikuo

291

Viscosity, entropy and the viscosity to entropy density ratio; how perfect is a nucleonic fluid?  

E-Print Network [OSTI]

The viscosity of hadronic matter is studied using a classical evaluation of the scattering angle and a quantum mechanical discussion based on phase shifts from a potential. Semi classical limits of the quantum theory are presented. A hard sphere and an attractive square well potential step are each considered as well as the combined effects of both. The lowest classical value of the viscosity for an attractive potential is shown to be a hard sphere limit. The high wave number-short wavelength limits of the quantum result have scaling laws associated with it for both the viscosity and entropy. These scaling laws are similar to the Fraunhoher diffraction increase for the hard sphere geometric cross section. Specific examples for nuclear collisions are given. The importance of the nuclear tensor force and hard core is mentioned. The viscosity (eta), entropy density (s) and eta/s ratio are calculated for a gas of dilute neutrons in the unitary limit of large scattering length. Away from the unitary limit, the ratio of the interaction radius or the scattering length to the interparticle spacing introduces a variable y besides the fugacity z. The isothermal compressibility is shown to impose important constraints. The results for eta/s are compared to the AdS/CFT string theory minimum of (1/4Pi)hbar/kb to see how close a nucleonic gas is to being a perfect fluid. The eta/s ~1hbar/kb for a neutron gas in its unitary limit. The eta/s 3hbar/kb treating the nuclear scattering as billiard ball collisions. The minimum eta/s for a neutron gas occurs in regions of negative isothermal compressibility and high fugacity where higher virial terms are important. In a neutron-proton system higher virial terms are associated with a liquid-gas phase transition and critical opalescent phenomena.The type of flow-laminar,vortex, turbulent- is investigated.

Aram Z. Mekjian

2010-09-29T23:59:59.000Z

292

Barium even-to-odd isotope abundance ratios in thick disk and thin disk stars  

E-Print Network [OSTI]

We present the Ba even-to-odd isotope abundance ratios in 25 cool dwarf stars with the metallicity [Fe/H] ranged between 0.25 and --1.35. Our method takes advantage of the hyperfine structure (HFS) affecting the \\ion{Ba}{ii} resonance line of the odd isotopes. The fractional abundance of the odd isotopes of Ba is derived from a requirement that Ba abundances from the resonance line $\\lambda 4554$ and subordinate lines $\\lambda 5853$ and $\\lambda 6496$ must be equal. The results are based on NLTE line formation and analysis of high resolution (R $\\sim60000$) high signal-to-noise (S/N $\\ge 200$) observed spectra. We find that the fraction of the odd isotopes of Ba grows toward the lower Ba abundance (or metallicity) and the mean value in the thick disk stars equals 33 $\\pm$ 4%. This indicates the higher contribution of the $r-$process to barium in the thick disk stars compared to the solar system matter. The obtained fraction increases with the [Eu/Ba] abundance ratio growth in agreement with expectations. A significant fraction of the \\emph{even} isotopes of Ba found in old Galactic stars (the thick disk stars), $\\sim67$%, is in contrast to the prediction of the "classical" model of the $s-$process and favors the value predicted by the "stellar" models of Arlandini et al. (1999) and Travaglio et al. (1999).

L. Mashonkina; G. Zhao

2006-04-10T23:59:59.000Z

293

Whole-Organism Concentration Ratios for Plutonium in Wildlife from Past US Nuclear Research Data  

SciTech Connect (OSTI)

Whole-organism concentration ratios (CR{sub wo-media}) for plutonium (Pu) in wildlife were calculated using data from the broad range of organism types and environmental settings of the US nuclear research program. Original sources included site-specific reports and scientific journal articles typically from 1960s to 80s research. Most of the calculated CR{sub wo-media} values are new to existing data sets, and, for some wildlife categories, serve to fill gaps or add to sparse data including those for terrestrial reptile; freshwater bird, crustacean and zooplankton; and marine crustacean and zooplankton. Ratios of Pu concentration in the whole-organism to that in specific tissues and organs are provided here for a range of freshwater and marine fish. The CR{sub wo-media} values in fish living in liquid discharge ponds were two orders of magnitude higher than those for similar species living in lakes receiving Pu from atmospheric fallout, suggesting the physico-chemical form of the source Pu can dominate over other factors related to transfer, such as organism size and feeding behavior. Small rodent data indicated one to two order of magnitude increases when carcass, pelt, and gastrointestinal tract were included together in the whole-organism calculation compared to that for carcass alone. Only 4% of Pu resided in the carcass of small rodents compared to 75% in the gastrointestinal tract and 21% in the pelt.

johansen, M.; Kamboj; Kuhne, W.

2012-07-26T23:59:59.000Z

294

Results Of Routine Strip Effluent Hold Tank And Decontaminated Salt Solution Hold Tank Samples From Modular Caustic-Side Solvent Extraction Unit During Macrobatch 5 Operations  

SciTech Connect (OSTI)

Strip Effluent Hold Tank (SEHT) and Decontaminated Salt Solution Hold Tank (DSSHT) samples from several of the ''microbatches'' of Integrated Salt Disposition Project (ISDP) Salt Batch (''Macrobatch'') 5 have been analyzed for {sup 238}Pu, {sup 90}Sr, {sup 137}Cs, and by Inductively Coupled Plasma Emission Spectroscopy (ICPES). The results indicate good decontamination performance within process design expectations. While the data set is sparse, the results of this set and the previous set of results for Macrobatch 4 samples indicate generally consistent operations. The DSSHT samples show continued presence of titanium, likely from leaching of the monosodium titanate in the Actinide Removal process (ARP).

Peters, T. B.; Fondeur, F. F.

2013-04-30T23:59:59.000Z

295

Effect of nearby Pearl vortices upon the Ic versus B characteristics of planar Josephson junctions in thin and narrow superconducting strips  

SciTech Connect (OSTI)

In this paper I show how to calculate the effect of a nearby Pearl vortex or antivortex upon the critical current I{sub c}(B) when a perpendicular magnetic induction B is applied to a planar Josephson junction in a long, thin, superconducting strip of width W much less than the Pearl length {Lambda} = 2{lambda}2/d, where {lambda} is the London penetration depth and d is the thickness (d < {lambda}). The theoretical results provide a qualitative explanation of unusual features recently observed experimentally by Golod et al. [ Phys. Rev. Lett. 104 227003 (2010)] in a device with a similar geometry.

Clem, John R.

2011-10-03T23:59:59.000Z

296

Numerical and physical modelling of microstructure evolution – new approach to the development and optimisation of cold rolling and annealing technology of IF steel strips  

Science Journals Connector (OSTI)

Modelling of cold rolling and continuous annealing of the IF steel is the objective of the paper. Experimental plastometric tests were performed to determine flow stress in the temperature range characteristic for cold rolling. Physical simulations of the annealing were performed at various heating rates to various temperatures. The kinetics of recrystallization model based on the additivity rule was identified on the basis of the experimental results. In connection with the finite element model of cold rolling, the complex model for the whole manufacturing cycle is obtained. This model can be used for optimisation of cold rolling and annealing technology of IF steel strips.

R. KUZIAK; R. MOLENDA; M. PIETRZYK

2008-01-01T23:59:59.000Z

297

On the polarization of non-Gaussian optical quantum field: Higher-order optical-polarization  

SciTech Connect (OSTI)

Polarization of light signifies transversal, anisotropic and asymmetrical statistical properties of electromagnetic radiation about the direction of propagation. Traditionally, optical-polarization is characterized by Stokes’ theory susceptible to be insufficient in assessing the polarization structure of optical quantum fields and, also, does not decipher the twin characteristic polarization parameters (‘ratio of real amplitudes and difference in phases’). An alternative way, in the spirit of classical description of optical-polarization, is introduced which can be generalized to deal higher-order polarization of quantum light, particularly, prepared in non-Gaussian Schrodinger Cat or Cat-like states and entangled bi-modal coherent states. On account of pseudo mono-modal or multi-modal nature of such optical quantum field, higher-order polarization is seen to be highly sensitive to the basis of description. -- Highlights: •We have generalized the usual concept of optical-polarization. •A concept of higher-order optical-polarization is introduced. •This concept is applied to compute the polarization-parameters of non-Gaussian Optical field. •To the best of our knowledge, no study is performed which investigates such optical quantum field.

Singh, Ravi S., E-mail: yesora27@gmail.com [Department of Physics, D. D. U. Gorakhpur University, Gorakhpur-273009, (U.P.) (India); Prakash, Hari [Physics Department, University of Allahabad, Allahabad-211002, (U.P.) (India)] [Physics Department, University of Allahabad, Allahabad-211002, (U.P.) (India)

2013-06-15T23:59:59.000Z

298

Mixing Ratios of CO, CO2, CH4, and Isotope Ratios of Associated 13C, 18O,  

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

Air Samples, Niwot Ridge, Colorado Air Samples, Niwot Ridge, Colorado Mixing Ratios of CO, CO2, CH4, and Isotope Ratios of Associated 13C, 18O, and 2H in Air Samples from Niwot Ridge, Colorado, and Montaña de Oro, California, USA (January 2004) image Abstract graphics Graphics data Data Investigator Stanley C. Tyler Department of Earth System Science University of California Irvine, CA DOI: 10.3334/CDIAC/atg.db1022 Description and Methods Air samples from Niwot Ridge, Colorado (41°N, 105°W) and Montaña de Oro, CA (35°N, 121°W) have been collected at approximately semi-monthly to monthly intervals since the mid 1990s. The beginning dates for each gas and isotope analyzed are as follows: GASLAB Flask Sampling Network Data Available (April 2003) Gas or isotope Niwot Ridge Montaña de Oro

299

Impacts of Raindrop Fall Velocity and Axis Ratio Errors on Dual-Polarization Radar Rainfall Estimation  

Science Journals Connector (OSTI)

Motivated by the field observations of fall velocity and axis ratio deviations from predicted terminal velocity and equilibrium axis ratio values, the combined effects of raindrop fall velocity and axis ratio deviations on dual-polarization radar ...

Bin Pei; Firat Y. Testik; Mekonnen Gebremichael

2014-10-01T23:59:59.000Z

300

A field evaluation of the movement of selected metals in revegetated strip mine overburden and laboratory assessment of transport mechanisms  

E-Print Network [OSTI]

placement of materials following the excavation and sampling of lignite at a test pit. The effect of varying ratios of lime and gypsum had on revegetation were studied. Resultant overburden'pH and electrical conductivity (EC) wire evaluated... to increase as reserves are depleted and the demand for more energy production to r educe depen- dence on oil and subsequent improvement of the economi c situation is being echoed across the world. To meet these demands, alternate forms of eneroy...

Launius, Kenneth Wayne

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" from the National Library of EnergyBeta (NLEBeta).
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301

E-Print Network 3.0 - aspect ratio spherical Sample Search Results  

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

element aspect ratio. Currently in the final stages of development, these tools will be applied... possible tetrahedrons (brute force) sort tetrahedrons for aspect ratio sort...

302

HIGHER ORDER SLIDING L. FRIDMAN and A. LEVANT  

E-Print Network [OSTI]

Chapter 3 HIGHER ORDER SLIDING MODES L. FRIDMAN and A. LEVANT Chihuahua Institute of Technology, Chihuahua, Mexico. Institute for Industrial Mathematics, Beer-Sheva, Israel. 3.1 Introduction One

Levant, Arie

303

U 68 — A reform proposal for Swedish higher education  

Science Journals Connector (OSTI)

The Swedish 1968 Educational Commission (U 68) completed its main report in 1973. The Commission recommends a very wide definition of the concept of higher education so as to include any qualified education or...

Gunnar Bergendal

1974-08-01T23:59:59.000Z

304

A comparative perspective on Finnish higher education policy  

Science Journals Connector (OSTI)

The last decades have offered social scientists an abundance of material for studies of governmental reform policy in the area of higher education. Reforms of educational politics have been legion in great par...

Harriet Silius

1987-01-01T23:59:59.000Z

305

Evaluating student allocation in the Portuguese public higher education system  

Science Journals Connector (OSTI)

This paper characterizes and evaluates the student allocation in the Portuguese public higher education system. It describes the supply and demand sides of the system by looking at the numerus clausus across area...

Miguel Portela; Nelson Areal; Carla Sá; Fernando Alexandre…

2008-08-01T23:59:59.000Z

306

Development of Large Format Lithium Ion Cells with Higher Energy...  

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

Hydrogen and Fuel Cells Program Review ES-127 Development of Large Format Lithium Ion Cells with Higher Energy Density Erin O'Driscoll (PI) Han Wu (Presenter) Dow Kokam May 13,...

307

Effect of low steam/carbon ratio on water gas shift reaction  

Science Journals Connector (OSTI)

Cu/ZnO/Al2O3 catalysts prepared by reverse co-precipitation and an industrial catalyst were used for the low-temperature water gas shift reaction. The catalysts were characterized by chemical analysis (atomic absorption spectroscopy), BET surface area, nitrous oxide chemisorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and catalytic activity in the target reaction. The catalyst prepared by reverse co-precipitation showed higher BET and copper surface areas, as well as higher catalytic activity. XRD patterns showed that the aurichalcite and hydrozincite precursors were converted into crystalline CuO and ZnO oxides when calcined in air at 623 K. TPR profiles revealed that Cu(I) oxide forms prior to Cu. Binding energies corresponding to several copper states on fresh catalysts were observed by XPS, but copper was in the metallic state during the reaction conditions (reduced catalyst). By varying the catalytic reaction conditions, such as vapor/carbon ratio and the time of contact, it is possible to obtain different conversion rates of carbon monoxide and thus operate under conditions of lower vapor consumption.

Renan Tavares Figueiredo; André Luis Dantas Ramos; Heloysa Martins Carvalho de Andrade; J.L.G. Fierro

2005-01-01T23:59:59.000Z

308

Neutrino flavor ratios as diagnostic of solar WIMP annihilation  

E-Print Network [OSTI]

We consider the neutrino (and antineutrino) flavors arriving at Earth for neutrinos produced in the annihilation of weakly interacting massive particles (WIMPs) in the Sun's core. Solar-matter effects on the flavor propagation of the resulting $\\agt$ GeV neutrinos are studied analytically within a density-matrix formalism. Matter effects, including mass-state level-crossings, influence the flavor fluxes considerably. The exposition herein is somewhat pedagogical, in that it starts with adiabatic evolution of single flavors from the Sun's center, with $\\theta_{13}$ set to zero, and progresses to fully realistic processing of the flavor ratios expected in WIMP decay, from the Sun's core to the Earth. In the fully realistic calculation, non-adiabatic level-crossing is included, as are possible nonzero values for $\\theta_{13}$ and the CP-violating phase $\\delta$. Due to resonance enhancement in matter, nonzero values of $\\theta_{13}$ even smaller than a degree can noticeably affect flavor propagation. Both normal and inverted neutrino-mass hierarchies are considered. Our main conclusion is that measuring flavor ratios (in addition to energy spectra) of $\\agt$ GeV solar neutrinos can provide discrinination between WIMP models. In particular, we demonstrate the flavor differences at Earth for neutrinos from the two main classes of WIMP final states, namely $W^+ W^-$ and 95% $b \\bar{b}$ + 5% $\\tau^+\\tau^-$. Conversely, if WIMP properties were to be learned from production in future accelerators, then the flavor ratios of $\\agt$ GeV solar neutrinos might be useful for inferring $\\theta_{13}$ and the mass hierarchy.

Ralf Lehnert; Thomas J. Weiler

2007-08-08T23:59:59.000Z

309

Separated Response Function Ratios in Exclusive, Forward pi^{+/-} Electroproduction  

E-Print Network [OSTI]

The study of exclusive $\\pi^{\\pm}$ electroproduction on the nucleon, including separation of the various structure functions, is of interest for a number of reasons. The ratio $R_L=\\sigma_L^{\\pi^-}/\\sigma_L^{\\pi^+}$ is sensitive to isoscalar contamination to the dominant isovector pion exchange amplitude, which is the basis for the determination of the charged pion form factor from electroproduction data. A change in the value of $R_T=\\sigma_T^{\\pi^-}/\\sigma_T^{\\pi^+}$ from unity at small $-t$, to 1/4 at large $-t$, would suggest a transition from coupling to a (virtual) pion to coupling to individual quarks. Furthermore, the mentioned ratios may show an earlier approach to pQCD than the individual cross sections. We have performed the first complete separation of the four unpolarized electromagnetic structure functions above the dominant resonances in forward, exclusive $\\pi^{\\pm}$ electroproduction on the deuteron at central $Q^2$ values of 0.6, 1.0, 1.6 GeV$^2$ at $W$=1.95 GeV, and $Q^2=2.45$ GeV$^2$ at $W$=2.22 GeV. Here, we present the $L$ and $T$ cross sections, with emphasis on $R_L$ and $R_T$, and compare them with theoretical calculations. Results for the separated ratio $R_L$ indicate dominance of the pion-pole diagram at low $-t$, while results for $R_T$ are consistent with a transition between pion knockout and quark knockout mechanisms.

G. M. Huber; H. P. Blok; C. Butuceanu; D. Gaskell; T. Horn; D. J. Mack; D. Abbott; K. Aniol; H. Anklin; C. Armstrong; J. Arrington; K. Assamagan; S. Avery; O. K. Baker; B. Barrett; E. J. Beise; C. Bochna; W. Boeglin; E. J. Brash; H. Breuer; C. C. Chang; N. Chant; M. E. Christy; J. Dunne; T. Eden; R. Ent; H. Fenker; E. F. Gibson; R. Gilman; K. Gustafsson; W. Hinton; R. J. Holt; H. Jackson; S. Jin; M. K. Jones; C. E. Keppel; P. H. Kim; W. Kim; P. M. King; A. Klein; D. Koltenuk; V. Kovaltchouk; M. Liang; J. Liu; G. J. Lolos; A. Lung; D. J. Margaziotis; P. Markowitz; A. Matsumura; D. McKee; D. Meekins; J. Mitchell; T. Miyoshi; H. Mkrtchyan; B. Mueller; G. Niculescu; I. Niculescu; Y. Okayasu; L. Pentchev; C. Perdrisat; D. Pitz; D. Potterveld; V. Punjabi; L. M. Qin; P. E. Reimer; J. Reinhold; J. Roche; P. G. Roos; A. Sarty; I. K. Shin; G. R. Smith; S. Stepanyan; L. G. Tang; V. Tadevosyan; V. Tvaskis; R. L. J. van der Meer; K. Vansyoc; D. Van Westrum; S. Vidakovic; J. Volmer; W. Vulcan; G. Warren; S. A. Wood; C. Xu; C. Yan; W. -X. Zhao; X. Zheng; B. Zihlmann

2014-04-15T23:59:59.000Z

310

Enrollment Logics and Discourse: Toward Professionalizing Higher Education Enrollment Management  

E-Print Network [OSTI]

stated, “enrollment management deals with how students choose a college, how they make the transition to higher education, what leads them to stay or drop out, and what influences how well they do while enrolled” (Hossler, 1984, p. 2). Hence, chief... ENROLLMENT LOGICS AND DISCOURSE: TOWARD PROFESSIONALIZING HIGHER EDUCATION ENROLLMENT MANAGEMENT A Dissertation by MONIQUE LAVETTE SNOWDEN Submitted to the Office of Graduate Studies of Texas A&M University in partial...

Snowden, Monique Lavette

2012-10-19T23:59:59.000Z

311

Higher-Rank Numerical Ranges of Unitary and Normal Matrices  

E-Print Network [OSTI]

We verify a conjecture on the structure of higher-rank numerical ranges for a wide class of unitary and normal matrices. Using analytic and geometric techniques, we show precisely how the higher-rank numerical ranges for a generic unitary matrix are given by complex polygons determined by the spectral structure of the matrix. We discuss applications of the results to quantum error correction, specifically to the problem of identification and construction of codes for binary unitary noise models.

Man-Duen Choi; John A. Holbrook; David W. Kribs; Karol Zyczkowski

2007-01-31T23:59:59.000Z

312

Searching for higher-dimensional wormholes with noncommutative geometry  

Science Journals Connector (OSTI)

Noncommutative geometry, an offshoot of string theory, replaces pointlike structures with smeared objects and has recently been extended to higher dimensions. The purpose of this paper is to obtain wormhole solutions with this extended noncommutative geometry as a background. It is found through this investigation that wormhole solutions exist in the usual four, as well as in five dimensions, but they do not exist in higher-dimensional spacetimes.

Farook Rahaman; Safiqul Islam; P. K. F. Kuhfittig; Saibal Ray

2012-11-27T23:59:59.000Z

313

Probability Tables for Mendelian Ratios with Small Numbers.  

E-Print Network [OSTI]

-called ex- Total ...-...-..-..-....-.--. .9999 pected may lead to error in interpretation rather than serving as a valuable aid as it does with large numbers. Examples with other small numbers could be given, but this should iIIustrate the points... is set off so as to show the point beyond which the total probability in that direction is .0050 or less. Mendelian Ratios Combi- 1 130 121 112 10 3 9 4 8 5 7 6 6 7 5 8 4 9 3 10 2 11 .On95 0028 .O002 .. -- I ---- - 1 12 .0016 .0004...

Warwick, B. L. (Bruce L.)

1932-01-01T23:59:59.000Z

314

Poisson's Ratio and the Densification of Glass under High Pressure  

SciTech Connect (OSTI)

Because of a relatively low atomic packing density, (C{sub g}) glasses experience significant densification under high hydrostatic pressure. Poisson's ratio ({nu}) is correlated to C{sub g} and typically varies from 0.15 for glasses with low C{sub g} such as amorphous silica to 0.38 for close-packed atomic networks such as in bulk metallic glasses. Pressure experiments were conducted up to 25 GPa at 293 K on silica, soda-lime-silica, chalcogenide, and bulk metallic glasses. We show from these high-pressure data that there is a direct correlation between {nu} and the maximum post-decompression density change.

Rouxel, T.; Ji, H. [Applied Mechanics Laboratory of the University of Rennes 1, LARMAUR, Universite de Rennes 1, Campus de Beaulieu, 35042 Rennes cedex (France); Hammouda, T. [Laboratoire Magmas et Volcans, CNRS-OPG , Universite Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand cedex (France); Moreac, A. [IPR, CNRS-Universite de Rennes 1, Campus de Beaulieu, 35042 Rennes cedex (France)

2008-06-06T23:59:59.000Z

315

CISC controls and the union/non-union wage ratio  

E-Print Network [OSTI]

57 CISC CONTROLS AND THE UNION/NON-UNION WAGE RATIO David Shulenburger, Robert A. McLean, Sara B. Rasch 1 Introduction The late 1960's witnessed relatively high rates of change in the hourly wages of craftsmen in the contract construction i.... The research reported here was supported by the Office of Construction Industry Servicc~, U.S. Depaitment of Labor. Hugh Conway and Tom Mobley of that office were especially helpful. Conclusions drawn and opinions expressed are those of the authors and 6o...

Shulenburger, David E.; McLean, Robert A.; Rasch, Sara B.

1984-06-01T23:59:59.000Z

316

Microfabricated three-electrode on-chip PDMS device with a vibration motor for stripping voltammetric detection of heavy metal ions  

Science Journals Connector (OSTI)

Abstract A microfabricated three-electrode on-chip device with a vibration motor for stripping voltammetric detection of Cd2+ and Pb2+ ions is introduced. Gold electrodes on a glass substrate are utilized as the counter electrode directly, as well as the working electrode with bismuth coating. The reference electrode is achieved by painting silver/silver chloride layer on the gold layer. Polydimethylsiloxane (PDMS) cover is bonded onto the glass substrate, organizing a compact module. A vibration motor in the device provides vibration as the alternate for stirring to improve detection limits and decrease deposition time. Cyclic voltammetry (CV) is performed with the on-chip reference electrode and a commercial liquid electrolyte Ag/AgCl electrode, showing that the potential shift is less than 20 mV. Differential pulse stripping voltammetry (DPSV) is used to detect Cd2+ and Pb2+ ions. Linearity is well defined from 10 µg/L to 80 µg/L for both ions. Detection limits for Cd2+ and Pb2+ ions are 0.7 µg/L and 1.2 µg/L, respectively, at 325 s deposition without vibration; the limits are 0.11 µg/L and 0.25 µg/L at 120 s deposition with vibration. The reliability is verified by detecting Cd2+ and Pb2+ concentrations of natural water samples and comparing with the results obtained from inductively coupled plasma mass spectrometry (ICP-MS).

Wen Zhang; Han Zhang; Spencer E. Williams; Anhong Zhou

2015-01-01T23:59:59.000Z

317

Laboratory Measurements of 3 --> 2 X-ray Line Ratios of F-like Fe XVIII and Ni XX  

SciTech Connect (OSTI)

The intensity ratios of 3 {yields} 2 emission lines of Fe XVIII and Ni XX were measured on the Livermore electron beam ion trap (EBIT-I) with a flat-field grating spectrometer. The results were compared with distorted-wave (DW) calculations obtained with the Flexible Atomic Code and recent close-coupling calculations using the R-matrix code. The measured 3s {yields} 2p/3d {yields} 2p ratios are about 20-40% higher than the theoretical values. When more extended configuration interaction is included in the DW theory, the agreement with the measurements improved slightly. At the beam energies of these measurements, no significant resonance contribution is expected to be present, and the discrepancies represent the uncertainties in the direct excitation cross sections.

Gu, M F; Chen, H; Brown, G V; Beiersdorfer, P; Kahn, S M

2007-03-08T23:59:59.000Z

318

Bench-Scale Development of a Hot Carbonate Absorption Process with Crystallization-Enabled High-Pressure Stripping for Post-Combustion CO{sub 2} Capture  

SciTech Connect (OSTI)

A novel Hot Carbonate Absorption Process with Crystallization-Enabled High-Pressure Stripping (Hot-CAP) has been developed by the University of Illinois at Urbana-Champaign and Carbon Capture Scientific, LLC in this three-year, bench-scale project. The Hot-CAP features a concentrated carbonate solution (e.g., K{sub 2}CO{sub 3}) for CO{sub 2} absorption and a bicarbonate slurry (e.g., KHCO{sub 3}) for high-pressure CO{sub 2} stripping to overcome the energy use and other disadvantages associated with the benchmark monoethanolamine (MEA) process. The project was aimed at performing laboratory- and bench-scale experiments to prove its technical feasibility and generate process engineering and scale-up data, and conducting a techno-economic analysis (TEA) to demonstrate its energy use and cost competitiveness over MEA. To meet project goals and objectives, a combination of experimental, modeling, process simulation, and economic analysis studies were applied. Carefully designed and intensive experiments were conducted to measure thermodynamic and reaction engineering data relevant to four major unit operations in the Hot-CAP (i.e., CO{sub 2} absorption, CO{sub 2} stripping, bicarbonate crystallization, and sulfate reclamation). The rate promoters that could accelerate the CO{sub 2} absorption rate into the potassium carbonate/bicarbonate (PCB) solution to a level greater than that into the 5 M MEA solution were identified, and the superior performance of CO{sub 2} absorption into PCB was demonstrated in a bench-scale packed-bed column. Kinetic data on bicarbonate crystallization were developed and applied for crystallizer design and sizing. Parametric testing of high-pressure CO{sub 2} stripping with concentrated bicarbonate-dominant slurries at high temperatures ({>=}140{degrees}C) in a bench-scale stripping column demonstrated lower heat use than with MEA. The feasibility of a modified process for combining SO{sub 2} removal with CO{sub 2} capture was preliminarily demonstrated. In addition to the experimental studies, the technical challenges pertinent to fouling of slurry-handling equipment and the design of the crystallizer and stripper were addressed through consultation with vendors and engineering analyses. A process flow diagram of the Hot-CAP was then developed and a TEA was performed to compare the energy use and cost performance of a nominal 550-MWe subcritical pulverized coal (PC)-fired power plant without CO{sub 2} capture (DOE/NETL Case 9) with the benchmark MEA-based post-combustion CO{sub 2} capture (PCC; DOE/NETL Case 10) and the Hot-CAP-based PCC. The results revealed that the net power produced in the PC + Hot-CAP is 609 MWe, greater than the PC + MEA (550 MWe). The 20-year levelized cost of electricity (LCOE) for the PC + Hot-CAP, including CO{sub 2} transportation and storage, is 120.3 mills/kWh, a 60% increase over the base PC plant without CO{sub 2} capture. The LCOE increase for the Hot-CAP is 29% lower than that for MEA. TEA results demonstrated that the Hot-CAP is energy-efficient and cost-effective compared with the benchmark MEA process.

Lu, Yongqi; DeVries, Nicholas; Ruhter, David; Manoranjan, Sahu; Ye, Qing; Ye, Xinhuai; Zhang, Shihan; Chen, Scott; Li, Zhiwei; O'Brien, Kevin

2014-03-31T23:59:59.000Z

319

Shear Viscosity to Entropy Density Ratio in Six Derivative Gravity  

E-Print Network [OSTI]

We calculate shear viscosity to entropy density ratio in presence of four derivative (with coefficient $\\alpha'$) and six derivative (with coefficient $\\alpha'^2$) terms in bulk action. In general, there can be three possible four derivative terms and ten possible six derivative terms in the Lagrangian. Among them two four derivative and eight six derivative terms are ambiguous, i.e., these terms can be removed from the action by suitable field redefinitions. Rest are unambiguous. According to the AdS/CFT correspondence all the unambiguous coefficients (coefficients of unambiguous terms) can be fixed in terms of field theory parameters. Therefore, any measurable quantities of boundary theory, for example shear viscosity to entropy density ratio, when calculated holographically can be expressed in terms of unambiguous coefficients in the bulk theory (or equivalently in terms of boundary parameters). We calculate $\\eta/s$ for generic six derivative gravity and find that apparently it depends on few ambiguous coefficients at order $\\alpha'^2$. We calculate six derivative corrections to central charges $a$ and $c$ and express $\\eta/s$ in terms of these central charges and unambiguous coefficients in the bulk theory.

Nabamita Banerjee; Suvankar Dutta

2009-03-23T23:59:59.000Z

320

Influence of Transport Variables on Isospin Transport Ratios  

E-Print Network [OSTI]

The symmetry energy in the nuclear equation of state affects many aspects of nuclear astrophysics, nuclear structure, and nuclear reactions. Recent constraints from heavy ion collisions, including isospin diffusion observables, have started to put constraints on the symmetry energy below nuclear saturation density, but these constraints depend on the employed transport model and input physics other than the symmetry energy. To understand these dependencies, we study the influence of the symmetry energy, isoscaler mean field compressibility and momentum dependence, in-medium nucleon-nucleon cross sections, and light cluster production on isospin diffusion within the pBUU transport code. In addition to the symmetry energy, several uncertain issues strongly affect isospin diffusion, most notably the cross sections and cluster production. In addition, there is a difference in the calculated isospin transport ratios, depending upon whether they are computed using the isospin asymmetry of either the residue or of all forward moving fragments. Measurements that compare the isospin transport ratios of these two quantities would help place constraints on the input physics, such as the density dependence of the symmetry energy.

D. D. S. Coupland; W. G. Lynch; M. B. Tsang; P. Danielewicz; Yingxun Zhang

2011-07-19T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

E-Print Network 3.0 - aspect ratio tokamak Sample Search Results  

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

tokamak Search Powered by Explorit Topic List Advanced Search Sample search results for: aspect ratio tokamak...

322

Elimination of higher-order diffraction using zigzag transmission grating in soft x-ray region  

SciTech Connect (OSTI)

We present a realization of the sinusoidal transmission function using a series of zigzag-profiled strips where the transmission takes on the binary values 0 and 1 in a two-dimensional distribution. A zigzag transmission grating of 1000 line/mm has been fabricated and demonstrated on the soft x-ray beam of synchrotron radiation. The axial single-order diffraction indicates that the zigzag transmission grating is adequate for spectroscopic application.

Zang, H. P.; Wang, C. K. [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065 (China); Gao, Y. L.; Zhou, W. M.; Kuang, L. Y.; Wei, L.; Fan, W.; Zhang, W. H.; Zhao, Z. Q.; Cao, L. F.; Gu, Y. Q.; Zhang, B. H. [Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Jiang, G. [Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065 (China); Zhu, X. L.; Xie, C. Q. [Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029 (China); Zhao, Y. D.; Cui, M. Q. [Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)

2012-03-12T23:59:59.000Z

323

DOE Proposes Higher Efficiency Standards for Refrigerators | Department of  

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

DOE Proposes Higher Efficiency Standards for Refrigerators DOE Proposes Higher Efficiency Standards for Refrigerators DOE Proposes Higher Efficiency Standards for Refrigerators September 28, 2010 - 12:00am Addthis WASHINGTON, DC - U.S. Energy Secretary Steven Chu today announced the release of a new proposed energy efficiency standard for residential refrigerators, refrigerator-freezers, and freezers. The standard, as proposed, could save consumers as much as $18.6 billion over thirty years. The Obama Administration has made efficiency standards a major priority as a way to save energy and money for American families and businesses. Since January 2009, the Department of Energy has finalized new efficiency standards for more than twenty household and commercial products, which will cumulatively save consumers between $250 billion and

324

Chemical conversion of energetic materials to higher value products  

SciTech Connect (OSTI)

The objective of this project is to develop new and innovative solutions for the disposal of surplus energetic materials. Disposal through open burning/open detonation (OB/OD) is less attractive today due to environmental, cost and safety concerns. We are examining the use of military high explosives as raw materials for the production of higher value products useful in civilian and military applications. We have developed scenarios where Explosive D and TNT can be used as raw materials for industrial processes to produce higher value products. 1,2 The use of Explosive D as a precursor to picramide, an intermediate potentially useful for the production of many higher value products, is illustrated in Figure 1.

Mitchell, A. R., LLNL

1998-05-01T23:59:59.000Z

325

BRIDGE: Branching Ratio Inquiry/Decay Generated Events  

E-Print Network [OSTI]

We present the manual for the program BRIDGE: Branching Ratio Inquiry/Decay Generated Events. The program is designed to operate with arbitrary models defined within matrix element generators, so that one can simulate events with small final-state multiplicities, decay them with BRIDGE, and then pass them to showering and hadronization programs. BRI can automatically calculate widths of two and three body decays. DGE can decay unstable particles in any Les Houches formatted event file. DGE is useful for the generation of event files with long decay chains, replacing large matrix elements by small matrix elements followed by sequences of decays. BRIDGE is currently designed to work with the MadGraph/MadEvent programs for implementing and simulating new physics models. In particular, it can operate with the MadGraph implementation of the MSSM. In this manual we describe how to use BRIDGE, and present a number of sample results to demonstrate its accuracy.

Patrick Meade; Matthew Reece

2007-03-05T23:59:59.000Z

326

QCD Viscosity to Entropy Density Ratio in the Hadronic Phase  

E-Print Network [OSTI]

Shear viscosity (eta) of QCD in the hadronic phase is computed by the coupled Boltzmann equations of pions and nucleons in low temperatures and low baryon number densities. The eta to entropy density ratio eta/s maps out the nuclear gas-liquid phase transition by forming a valley tracing the phase transition line in the temperature-chemical potential plane. When the phase transition turns into a crossover, the eta/s valley gradually disappears. We suspect the general feature for a first-order phase transition is that eta/s has a discontinuity in the bottom of the eta/s valley. The discontinuity coincides with the phase transition line and ends at the critical point. Beyond the critical point, a smooth eta/s valley is seen. However, the valley could disappear further away from the critical point. The eta/s measurements might provide an alternative to identify the critical points.

Jiunn-Wei Chen; Yen-Han Li; Yen-Fu Liu; Eiji Nakano

2007-03-21T23:59:59.000Z

327

Influence of Transport Variables on Isospin Transport Ratios  

E-Print Network [OSTI]

The symmetry energy in the nuclear equation of state affects many aspects of nuclear astrophysics, nuclear structure, and nuclear reactions. Recent constraints from heavy ion collisions, including isospin diffusion observables, have started to put constraints on the symmetry energy below nuclear saturation density, but these constraints depend on the employed transport model and input physics other than the symmetry energy. To understand these dependencies, we study the influence of the symmetry energy, isoscaler mean field compressibility and momentum dependence, in-medium nucleon-nucleon cross sections, and light cluster production on isospin diffusion within the pBUU transport code. In addition to the symmetry energy, several uncertain issues strongly affect isospin diffusion, most notably the cross sections and cluster production. In addition, there is a difference in the calculated isospin transport ratios, depending upon whether they are computed using the isospin asymmetry of either the residue or of a...

Coupland, D D S; Tsang, M B; Danielewicz, P; Zhang, Yingxun

2011-01-01T23:59:59.000Z

328

Modular low-aspect-ratio high-beta torsatron  

DOE Patents [OSTI]

A fusion-reactor device is described which the toroidal magnetic field and at least a portion of the poloidal magnetic field are provided by a single set of modular coils. The coils are arranged on the surface of a low-aspect-ratio toroid in planed having the cylindrical coordinate relationship phi = phi/sub i/ + kz, where k is a constant equal to each coil's pitch and phi/sub i/ is the toroidal angle at which the i'th coil intersects the z = o plane. The toroid defined by the modular coils preferably has a race track minor cross section. When vertical field coils and, preferably, a toroidal plasma current are provided for magnetic-field-surface closure within the toroid, a vacuum magnetic field of racetrack-shaped minor cross section with improved stability and beta valves is obtained.

Sheffield, G.V.

1982-04-01T23:59:59.000Z

329

Modular low aspect ratio-high beta torsatron  

DOE Patents [OSTI]

A fusion reactor device in which the toroidal magnetic field and at least a portion of the poloidal magnetic field are provided by a single set of modular coils. The coils are arranged on the surface of a low aspect ratio toroid in planes having the cylindrical coordinate relationship .phi.=.phi..sub.i +kz where k is a constant equal to each coil's pitch and .phi..sub.i is the toroidal angle at which the i'th coil intersects the z=o plane. The device may be described as a modular, high beta torsation whose screw symmetry is pointed along the systems major (z) axis. The toroid defined by the modular coils preferably has a racetrack minor cross section. When vertical field coils and preferably a toroidal plasma current are provided for magnetic field surface closure within the toroid, a vacuum magnetic field of racetrack shaped minor cross section with improved stability and beta valves is obtained.

Sheffield, George V. (Hopewell, NJ); Furth, Harold P. (Princeton, NJ)

1984-02-07T23:59:59.000Z

330

Origin of higher temperatures in multidipolar plasma devices  

SciTech Connect (OSTI)

Hot-filament discharge devices with multidipolar surface magnetic fields have densities and temperatures higher than in these devices without multidipolar fields. Probe data show a much higher density of secondary electrons from the wall with multidipolar fields that is best explained by the wall secondaries being confined by the magnetic mirror effect. A relatively simple mathematical model for energy balance shows that the heating of the bulk plasma electrons by collisions with the greater number of secondaries from the wall accounts quantitatively for the increased temperature.

Knappmiller, Scott [Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, Colorado 80309-0392 (United States); Robertson, Scott [Center for Integrated Plasma Studies, University of Colorado, Boulder, Colorado 80309-0390 (United States)

2011-10-15T23:59:59.000Z

331

Higher order 1/m corrections at zero recoil  

Science Journals Connector (OSTI)

The general structure of the 1/m corrections at zero recoil is studied. The relevant matrix elements are forward matrix elements of local higher dimensional operators and their time ordered products with higher order terms from the Lagrangian. These matrix elements may be classified in a simple way and the analysis at the nonrecoil point for the form factor of heavy quark currents simplifies drastically. The second order recoil corrections to the form factor hA1 of the axial vector current, relevant for the ?Vcb? determination from B?D* decays, are estimated to be -5%

Thomas Mannel

1994-07-01T23:59:59.000Z

332

Higher coronary heart disease and heart attack morbidity in Appalachian coal mining regions  

Science Journals Connector (OSTI)

Background This study analyzes the U.S. 2006 Behavioral Risk Factor Surveillance System survey data (N = 235,783) to test whether self-reported cardiovascular disease rates are higher in Appalachian coal mining counties compared to other counties after control for other risks. Methods Dependent variables include self-reported measures of ever (1) being diagnosed with cardiovascular disease (CVD) or with a specific form of CVD including (2) stroke, (3) heart attack, or (4) angina or coronary heart disease (CHD). Independent variables included coal mining, smoking, BMI, drinking, physician supply, diabetes co-morbidity, age, race/ethnicity, education, income, and others. SUDAAN Multilog models were estimated, and odds ratios tested for coal mining effects. Results After control for covariates, people in Appalachian coal mining areas reported significantly higher risk of CVD (OR = 1.22, 95% CI = 1.14–1.30), angina or CHD (OR = 1.29, 95% CI = 1.19–1.39) and heart attack (OR = 1.19, 95% CI = 1.10–1.30). Effects were present for both men and women. Conclusions Cardiovascular diseases have been linked to both air and water contamination in ways consistent with toxicants found in coal and coal processing. Future research is indicated to assess air and water quality in coal mining communities in Appalachia, with corresponding environmental programs and standards established as indicated.

Michael Hendryx; Keith J. Zullig

2009-01-01T23:59:59.000Z

333

STATE OF COLORADO DEPARTMENT OF HIGHER EDUCATION John Hickenlooper  

E-Print Network [OSTI]

of Colorado Denver University of Northern Colorado Western State Colorado University #12;FINAL StatewideSTATE OF COLORADO DEPARTMENT OF HIGHER EDUCATION John Hickenlooper Governor Lt. Gov. Joseph A. Garcia Executive Director 1560 Broadway, Suite 1600, Denver, Colorado 80202 (303) 866-2723 fax (303

334

Middle States Commission on Higher Education Decennial Accreditation Review  

E-Print Network [OSTI]

's Mission Statement (4.1) Faculty Development Strategic Plan Standard 1 Section 4.II.A.3.i (3.25) University Advisory Groups and Committees (2.20) LTS Strategic Plan Standard 1 Section 4.II.B.4 (4.17) ExamplesMiddle States Commission on Higher Education Decennial Accreditation Review Chapter 4 Appendices

Napier, Terrence

335

Knowledge induction from medical databases with higher-order programming  

Science Journals Connector (OSTI)

Medical data mining is an emerging area of computational intelligence applied to automatically analyze patients' records aiming at the discovery of new knowledge potentially useful for medical decision making. Induced knowledge is anticipated not only ... Keywords: higher-order programming, logic-based knowledge induction, medical decision making, medical informatics

Nittaya Kerdprasop; Kittisak Kerdprasop

2009-10-01T23:59:59.000Z

336

Opportunities and Challenges for Higher Renewable Penetration in  

E-Print Network [OSTI]

to unsustainable levels for solar PV #12;11 Capacity Value Declines Significantly at High Penetration Peak net loadOpportunities and Challenges for Higher Renewable Penetration in California Beyond 33%: UC Davis Policy Forum Series Sacramento, California October 17, 2014 Arne Olson, Partner, E3 #12;2 California

California at Davis, University of

337

An Experience Report on Using Gamification in Technical Higher Education  

E-Print Network [OSTI]

An Experience Report on Using Gamification in Technical Higher Education Alexandru Iosup Parallel with gamification, which we loosely define as a teaching technique that uses social gaming elements to deliver long-running attempts to show that gamification can be used to teach technically challenging courses

Iosup, Alexandru

338

Pointcuts and advice in higher-order languages  

Science Journals Connector (OSTI)

Aspect-oriented software design will need to support languages with first-class and higher-order procedures, such as Python, Perl, ML and Scheme. These language features present both challenges and benefits for aspects. On the one hand, they force the ...

David B. Tucker; Shriram Krishnamurthi

2003-03-01T23:59:59.000Z

339

Economic Impact of West Virginia Higher Education Institutions  

E-Print Network [OSTI]

Economic Impact of West Virginia Higher Education Institutions FY 2008 By Amy Higginbotham Eric Pennington Christiadi Tom S. Witt Bureau of Business and Economic Research College of Business and Economics ­ the economic impact of their expenditures on the West Virginia economy. The economic impacts presented

Mohaghegh, Shahab

340

Supporting Higher Education in the Developing World Executive Director Report  

E-Print Network [OSTI]

Supporting Higher Education in the Developing World Executive Director Report Steven Davis science at the Department of Computer Science and Information Technology at the University of Cape Coast programme in computer science and information technology. d) Lisa Fisher is now on assignment at UIN Suka

deYoung, Brad

Note: This page contains sample records for the topic "higher stripping ratios" 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

REINVENTING PUBLIC HIGHER EDUCATION A Call to Action  

E-Print Network [OSTI]

to dramatically reduce the need for remediation and repetition of courses. Entrepreneurs and academics must and universities, businesses and the community to create innovative programs that blend learning with real. However, to remedy the crisis in public higher education, we must reinvent our current approach

Su, Xiao

342

Chemistry in Higher What's available and where is the info?  

E-Print Network [OSTI]

Chemistry in Higher Education What's available and where is the info? What does studying chemistry? Where does it lead and what might a chemistry career look like? Dr. David Read, Director of Outreach 2013 #12;310 (294) HE courses with chemistry offered as a single subject hosted at 53 universities 699

Anderson, Jim

343

ON HIGHER ORDER BOURGAIN ALGEBRAS OF A NEST ALGEBRA  

E-Print Network [OSTI]

ON HIGHER ORDER BOURGAIN ALGEBRAS OF A NEST ALGEBRA TIMOTHY G. FEEMAN Abstract. Following earlier algebras, as well as the second order Bourgain algebras, associated with a nest algebra, we herein demonstrate that a given nest algebra has (essentially) at most six different third order Bourgain algebras

Feeman, Timothy

344

A typed higher-order calculus for querying XML databases  

Science Journals Connector (OSTI)

As the eXtensible Markup Language (XML) is about to emerge as a new standard for databases, the problem of providing solid logical grounds for XML query languages arises. For the relational data model first-order logic, i.e. the Relational Calculus turned ... Keywords: eXten-sible markup language, higher-order logic, object model, query language, type system

Qing Wang; Klaus-Dieter Schewe

2008-01-01T23:59:59.000Z

345

Towards Unifying Structures in Higher Spin Gauge Symmetry  

E-Print Network [OSTI]

This article is expository in nature, outlining some of the many still incompletely understood features of higher spin field theory. We are mainly considering higher spin gauge fields in their own right as free-standing theoretical constructs and not circumstances where they occur as part of another system. Considering the problem of introducing interactions among higher spin gauge fields, there has historically been two broad avenues of approach. One approach entails gauging a non-Abelian global symmetry algebra, in the process making it local. The other approach entails deforming an already local but Abelian gauge algebra, in the process making it non-Abelian. In cases where both avenues have been explored, such as for spin 1 and 2 gauge fields, the results agree (barring conceptual and technical issues) with Yang-Mills theory and Einstein gravity. In the case of an infinite tower of higher spin gauge fields, the first approach has been thoroughly developed and explored by M. Vasiliev, whereas the second approach, after having lain dormant for a long time, has received new attention by several authors lately. In the present paper we briefly review some aspects of the history of higher spin gauge fields as a backdrop to an attempt at comparing the gauging vs. deforming approaches. A common unifying structure of strongly homotopy Lie algebras underlying both approaches will be discussed. The modern deformation approach, using BRST-BV methods, will be described as far as it is developed at the present time. The first steps of a formulation in the categorical language of operads will be outlined. A few aspects of the subject that seems not to have been thoroughly investigated are pointed out.

Anders K. H. Bengtsson

2008-02-04T23:59:59.000Z

346

Artificial Neural Network Processing of Stripping Analysis Responses for Identifying and Quantifying Heavy Metals in the Presence of Intermetallic Compound Formation  

Science Journals Connector (OSTI)

Artificial Neural Network Processing of Stripping Analysis Responses for Identifying and Quantifying Heavy Metals in the Presence of Intermetallic Compound Formation ... Using simulated data, modeled after complex interactions experimentally observed in samples containing Cu and Zn, it has been demonstrated that networks containing two layers of neurons (a nonlinear hidden layer and a linear output layer) can be trained to calculate concentrations under a variety of complicated situations. ... The output of any particular neuron in a feed-forward neural network is determined by passing the sum of the weighted inputs through a transfer function, where the transfer function can have any of a variety of forms (linear and sigmoidal transfer functions are most common). ...

Helen Chan; Alexander Butler; David M. Falck; Michael S. Freund

1997-07-01T23:59:59.000Z

347

Assessment of penetration of quantum dots through in vitro and in vivo human skin using the human skin equivalent model and the tape stripping method  

SciTech Connect (OSTI)

Quantum dots (QDs) are rapidly emerging as an important class of nanoparticles (NPs) with potential applications in medicine. However, little is known about penetration of QDs through human skin. This study investigated skin penetration of QDs in both in vivo and in vitro human skin. Using the tape stripping method, this study demonstrates for the first time that QDs can actually penetrate through the stratum corneum (SC) of human skin. Transmission electron microscope (TEM) and energy diverse X-ray (EDX) analysis showed accumulation of QDs in the SC of a human skin equivalent model (HSEM) after dermal exposure to QDs. These findings suggest possible transdermal absorption of QDs after dermal exposure over a relatively long period of time.

Jeong, Sang Hoon; Kim, Jae Hwan; Yi, Sang Min [Laboratory of Cell Signaling and Nanomedicine, Department of Dermatology and Division of Brain Korea 21 Project for Biomedical Science, Korea University College of Medicine, Seoul (Korea, Republic of)] [Laboratory of Cell Signaling and Nanomedicine, Department of Dermatology and Division of Brain Korea 21 Project for Biomedical Science, Korea University College of Medicine, Seoul (Korea, Republic of); Lee, Jung Pyo; Kim, Jin Ho; Sohn, Kyung Hee; Park, Kui Lea [National Institute of Toxicological Research, Seoul (Korea, Republic of)] [National Institute of Toxicological Research, Seoul (Korea, Republic of); Kim, Meyoung-Kon [Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul (Korea, Republic of)] [Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul (Korea, Republic of); Son, Sang Wook, E-mail: skin4u@korea.ac.kr [Laboratory of Cell Signaling and Nanomedicine, Department of Dermatology and Division of Brain Korea 21 Project for Biomedical Science, Korea University College of Medicine, Seoul (Korea, Republic of)

2010-04-09T23:59:59.000Z

348

UV-TO-FIR ANALYSIS OF SPITZER/IRAC SOURCES IN THE EXTENDED GROTH STRIP. II. PHOTOMETRIC REDSHIFTS, STELLAR MASSES, AND STAR FORMATION RATES  

SciTech Connect (OSTI)

Based on the ultraviolet to far-infrared photometry already compiled and presented in a companion paper (Paper I), we present a detailed spectral energy distribution (SED) analysis of nearly 80,000 IRAC 3.6 + 4.5 {mu}m selected galaxies in the Extended Groth Strip. We estimate photometric redshifts, stellar masses, and star formation rates (SFRs) separately for each galaxy in this large sample. The catalog includes 76,936 sources with [3.6] {<=} 23.75 (85% completeness level of the IRAC survey) over 0.48 deg{sup 2}. The typical photometric redshift accuracy is {Delta}z/(1 + z) = 0.034, with a catastrophic outlier fraction of just 2%. We quantify the systematics introduced by the use of different stellar population synthesis libraries and initial mass functions in the calculation of stellar masses. We find systematic offsets ranging from 0.1 to 0.4 dex, with a typical scatter of 0.3 dex. We also provide UV- and IR-based SFRs for all sample galaxies, based on several sets of dust emission templates and SFR indicators. We evaluate the systematic differences and goodness of the different SFR estimations using the deep FIDEL 70 {mu}m data available in the Extended Groth Strip. Typical random uncertainties of the IR-bases SFRs are a factor of two, with non-negligible systematic effects at z {approx}> 1.5 observed when only MIPS 24 {mu}m data are available. All data products (SEDs, postage stamps from imaging data, and different estimations of the photometric redshifts, stellar masses, and SFRs of each galaxy) described in this and the companion paper are publicly available, and they can be accessed through our the Web interface utility Rainbow-navigator.

Barro, G.; Perez-Gonzalez, P. G.; Gallego, J.; Villar, V.; Zamorano, J. [Departamento de Astrofisica, Facultad de CC. Fisicas, Universidad Complutense de Madrid, E-28040 Madrid (Spain); Ashby, M. L. N. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States); Kajisawa, M.; Yamada, T. [Astronomical Institute, Tohoku University, Aramaki, Aoba, Sendai 9808578 (Japan); Miyazaki, S. [National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588 (Japan)

2011-04-01T23:59:59.000Z

349

Frequency ratio method for seismic modeling of Gamma Doradus stars  

E-Print Network [OSTI]

A method for obtaining asteroseismological information of a Gamma Doradus oscillating star showing at least three pulsation frequencies is presented. This method is based on a first-order asymptotic g-mode expression, in agreement with the internal structure of Gamma Doradus stars. The information obtained is twofold: 1) a possible identification of the radial order n and degree l of observed frequencies (assuming that these have the same l), and 2) an estimate of the integral of the buoyancy frequency (Brunt-Vaisala) weighted over the stellar radius along the radiative zone. The accuracy of the method as well as its theoretical consistency are also discussed for a typical Gamma Doradus stellar model. Finally, the frequency ratios method has been tested with observed frequencies of the Gamma Doradus star HD 12901. The number of representative models verifying the complete set of constraints (the location in the HR diagram, the Brunt-Vaisala frequency integral, the observed metallicity and frequencies and a re...

Moya, A; Amado, P J; Martin-Ruiz, S; Garrido, R

2004-01-01T23:59:59.000Z

350

Achieving Higher Performance with Cost Neutrality through Building America  

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

Achieving Higher Performance Achieving Higher Performance with Cost Neutrality through Building America Residential Energy Efficiency Stakeholder Meeting March 1, 2012 Residential Energy Efficiency Stakeholder Meeting Agenda * Imagine Homes - An Overview * 2010 Occupied Test House - Objectives - From Modeling through Monitoring * 2012 Occupied Test House - Objectives - What's Next * Closing Remarks Residential Energy Efficiency Stakeholder Meeting Overview: * San Antonio, TX * 68 Homes in 2011 * $140k - $425k * 1,300 - 4,500 ft 2 Imagine Homes Residential Energy Efficiency Stakeholder Meeting Environment: * Hot-Humid * 2,996 CDD * 1,546 HDD * 31" Rainfall Imagine Homes Residential Energy Efficiency Stakeholder Meeting Imagine Homes History: * Established 2006 * Partnership with Beazer Homes * Builders Challenge * Building America

351

Geodesic deviation at higher orders via covariant bitensors  

E-Print Network [OSTI]

We review a simple but instructive application of the formalism of covariant bitensors, to use a deviation vector field along a fiducial geodesic to describe a neighboring worldline, in an exact and manifestly covariant manner, via the exponential map. Requiring the neighboring worldline to be a geodesic leads to the usual linear geodesic deviation equation for the deviation vector, plus corrections at higher order in the deviation and relative velocity. We show how these corrections can be efficiently computed to arbitrary orders via covariant bitensor expansions, deriving a form of the geodesic deviation equation valid to all orders, and producing its explicit expanded form through fourth order. We also discuss the generalized Jacobi equation, action principles for the higher-order geodesic deviation equations, results useful for describing accelerated neighboring worldlines, and the formal general solution to the geodesic deviation equation through second order.

Justin Vines

2014-07-25T23:59:59.000Z

352

Higher Derivative Corrections to Non-Abelian Vortex Effective Theory  

E-Print Network [OSTI]

We give a systematic method to calculate higher derivative corrections to low-energy effective theories of solitons, which are in general non-linear sigma models on the moduli spaces of the solitons. By applying it to the effective theory of a single BPS non-Abelian vortex in U(N) gauge theory with N fundamental Higgs fields, we obtain four derivative corrections to the effective sigma model on the moduli space C \\times CP^{N-1}. We compare them with the Nambu-Goto action and the Faddeev-Skyrme model. We also show that Yang-Mills instantons/monopoles trapped inside a non-Abelian vortex membrane/string are not modified in the presence of higher derivative terms.

Minoru Eto; Toshiaki Fujimori; Muneto Nitta; Keisuke Ohashi; Norisuke Sakai

2012-04-03T23:59:59.000Z

353

Reducing Photobleaching in STED Microscopy with Higher Scanning Speed  

E-Print Network [OSTI]

Photobleaching is a major limitation of super-resolution STED microscopy. We show that the photobleaching rate in STED microscopy is slowed down by scanning with a higher linear speed, enabled by the large field of view in our custom-built resonant-scanning STED microscope. The effect of scanning speed on photobleaching is more remarkable at higher levels of depletion laser irradiance. With a depletion irradiance of 0.4 GW/cm$^2$ (time average), we were able to slow down the photobleaching of the Atto 647N dye by 80% with 8-fold faster scanning. Photobleaching is primarily caused by the depletion light acting upon the excited fluorophores. Experimental data qualitatively agree with a theoretical model. Our results encourage further increasing linear scanning speed for photobleaching reduction in STED microscopy.

Wu, Yong

2014-01-01T23:59:59.000Z

354

Extended supersymmetry in AdS_3 higher spin theories  

E-Print Network [OSTI]

We determine the asymptotic symmetry algebra (for fields of low spin) of the $M\\times M$ matrix extended Vasiliev theories on AdS$_3$ and find that it agrees with the $\\mathcal{W}$-algebra of their proposed coset duals. Previously it was noticed that for $M=2$ the supersymmetry increases from $\\mathcal{N}=2$ to $\\mathcal{N}=4$. We study more systematically this type of supersymmetry enhancements and find that, although the higher spin algebra has extended supersymmetry for all $M\\geq 2$, the corresponding asymptotic symmetry algebra fails to be superconformal except for $M=2$, when it has large $\\mathcal{N}=4$ superconformal symmetry. Moreover, we find that the Vasiliev theories based on $shs^E\\! \\left( \\mathcal{N} \\vert 2, \\mathbb{R} \\right)$ are special cases of the matrix extended higher spin theories, and hence have the same supersymmetry properties.

Constantin Candu; Cheng Peng; Carl Vollenweider

2014-08-21T23:59:59.000Z

355

Extended supersymmetry in AdS_3 higher spin theories  

E-Print Network [OSTI]

We determine the asymptotic symmetry algebra (for fields of low spin) of the $M\\times M$ matrix extended Vasiliev theories on AdS$_3$ and find that it agrees with the $\\mathcal{W}$-algebra of their proposed coset duals. Previously it was noticed that for $M=2$ the supersymmetry increases from $\\mathcal{N}=2$ to $\\mathcal{N}=4$. We study more systematically this type of supersymmetry enhancements and find that, although the higher spin algebra has extended supersymmetry for all $M\\geq 2$, the corresponding asymptotic symmetry algebra fails to be superconformal except for $M=2$, when it has large $\\mathcal{N}=4$ superconformal symmetry. Moreover, we find that the Vasiliev theories based on $shs^E\\! \\left( \\mathcal{N} \\vert 2, \\mathbb{R} \\right)$ are special cases of the matrix extended higher spin theories, and hence have the same supersymmetry properties.

Candu, Constantin; Vollenweider, Carl

2014-01-01T23:59:59.000Z

356

The Peierls argument for higher dimensional Ising models  

Science Journals Connector (OSTI)

The Peierls argument is a mathematically rigorous and intuitive method to show the presence of a non-vanishing spontaneous magnetization in some lattice models. This argument is typically explained for the D = 2 Ising model in a way which cannot be easily generalized to higher dimensions. The aim of this paper is to present an elementary discussion of the Peierls argument for the general D-dimensional Ising model.

Claudio Bonati

2014-01-01T23:59:59.000Z

357

Covariant Noether Charge for Higher Dimensional Chern-Simons Terms  

E-Print Network [OSTI]

We construct a manifestly covariant differential Noether charge for theories with Chern-Simons terms in higher dimensional spacetimes. This is in contrast to Tachikawa's extension of the standard Lee-Iyer-Wald formalism which results in a non-covariant differential Noether charge for Chern-Simons terms. On a bifurcation surface, our differential Noether charge integrates to the Wald-like entropy formula proposed by Tachikawa in arXiv:hep-th/0611141.

Tatsuo Azeyanagi; R. Loganayagam; Gim Seng Ng; Maria J. Rodriguez

2014-07-23T23:59:59.000Z

358

Covariant Noether Charge for Higher Dimensional Chern-Simons Terms  

E-Print Network [OSTI]

We construct a manifestly covariant differential Noether charge for theories with Chern-Simons terms in higher dimensional spacetimes. This is in contrast to Tachikawa's extension of the standard Lee-Iyer-Wald formalism which results in a non-covariant differential Noether charge for Chern-Simons terms. On a bifurcation surface, our differential Noether charge integrates to the Wald-like entropy formula proposed by Tachikawa in arXiv:hep-th/0611141.

Azeyanagi, Tatsuo; Ng, Gim Seng; Rodriguez, Maria J

2014-01-01T23:59:59.000Z

359

On the coset duals of extended higher spin theories  

E-Print Network [OSTI]

We study the holographic duality between the M x M matrix extension of Vasiliev higher spin theories on AdS3 and the large N limit of SU(N+M)/SU(N) x U(1) type cosets. We present a simplified proof for the agreement of the spectra and clarify the relation between this duality and the version in which the cosets are replaced by Kazama-Suzuki models of Grassmannian type.

Constantin Candu; Carl Vollenweider

2013-12-18T23:59:59.000Z

360

Concentrations and activity ratios of uranium isotopes in groundwater from Donana National Park, South of Spain  

SciTech Connect (OSTI)

The levels and distribution of natural radionuclides in groundwaters from the unconfined Almonte-Marismas aquifer, upon which Donana National Park is located, have been analysed. Most sampled points were multiple piezometers trying to study the vertical distribution of the hydrogeochemical characteristics in the aquifer. Temperature, pH, electrical conductivity, dissolved oxygen and redox potential were determined in the field. A large number of parameters, physico-chemical properties, major and minor ions, trace elements and natural radionuclides (U-isotopes, Th-isotopes, Ra-isotopes and {sup 210}Po), were also analysed. In the southern zone, where aeolian sands crop out, water composition is of the sodium chloride type, and the lower U-isotopes concentrations have been obtained. As water circulates through the aquifer, bicarbonate and calcium concentrations increase slightly, and higher radionuclides concentrations were measured. Finally, we have demonstrated that {sup 234}U/{sup 238}U activity ratios can be used as markers of the type of groundwater and bedrock, as it has been the case for old waters with marine origin confined by a marsh in the south-east part of aquifer.

Bolivar, J. P.; Olias, M.; Gonzalez-Garcia, F. [Department of Applied Physics, University of Huelva, Campus de El Carmen, 21071-Huelva (Spain); Garcia-Tenorio, R. [Department of Applied Physics II, University of Sevilla, ETSA Arquitectura, 41012-Sevilla (Spain)

2008-08-07T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Measurements of the self?to?other ratio in an opera chorus in performance  

Science Journals Connector (OSTI)

The objective of this study was to obtain measurements of the self?to?other ratio (SOR) in the opera chorus on stage. Four members of the opera chorus of Opera Australia volunteered to carry wireless binaural microphones during a dress rehearsal of Verdi’s The Masked Ball in the Sydney Opera House. Conditions were those of actual performance in costume with soloists and orchestra. Hence the recordings are very realistic if acoustically not so stringently controlled. The SOR was estimated from the recordings using M/S matrixing complemented with L–R correlation by adaptive filtering. The results indicate how much louder the singers heard themselves relative to the rest of the ensemble including the orchestra. The SOR varied with score and on?stage formation but was 4–8 dB higher than in ordinary choirs (not opera) as might be expected from the podium acoustics. While each opera chorus artist can hear his or her own voice very well they often hear less of the rest of the chorus and very little of the orchestra. This was borne out in informal listening; the orchestra often became inaudible once the choir entered its louder passages. [Work supported by the Australian Research Council under the SPIRT program.

2004-01-01T23:59:59.000Z

362

Constraints on adaptation: explaining deviation from optimal sex ratio using artificial neural networks  

E-Print Network [OSTI]

Y Keywords: adaptation; artificial neural networks; evolutionary constraints; parasitoid; sex ratio by modelling information acquisition and processing using artificial neural networks (ANNs) evolving accordingConstraints on adaptation: explaining deviation from optimal sex ratio using artificial neural

West, Stuart

363

Gain to Absorption Ratio of Self-Induced Transparency Modelocked Quantum Cascade Lasers  

Science Journals Connector (OSTI)

A model to calculate the gain to absorption ratio of self-induced transparency modelocked quantum cascade lasers is presented and then used to find the gain to absorbing periods ratio...

Talukder, Muhammad; Menyuk, Curtis

364

Experimental Determination of the Effect of the Ratio of B/Al...  

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

the Effect of the Ratio of BAl on Glass Dissolution along the Nepheline (NaAlSiO4) – Experimental Determination of the Effect of the Ratio of BAl on Glass Dissolution along...

365

Effects of elevated CO2 concentration on growth and water usage of tomato seedlings under different ammonium/nitrate ratios  

Science Journals Connector (OSTI)

Increasing atmospheric CO2 concentration is generally expected to enhance photosynthesis and growth of agricultural C3 vegetable crops, and therefore results in an increase in crop yield. However, little is known about the combined effect of elevated CO2 and N species on plant growth and development. Two growth-chamber experiments were conducted to determine the effects of NH4+/NO3? ratio and elevated CO2 concentration on the physiological development and water use of tomato seedlings. Tomato was grown for 45 d in containers with nutrient solutions varying in NH4+/NO3? ratios and CO2 concentrations in growth chambers. Results showed that plant height, stem thickness, total dry weight, dry weight of the leaves, stems and roots, G value (total plant dry weight/seedling days), chlorophyll content, photosynthetic rate, leaf-level and whole plant-level water use efficiency and cumulative water consumption of tomato seedlings were increased with increasing proportion of NO3? in nutrient solutions in the elevated CO2 treatment. Plant biomass, plant height, stem thickness and photosynthetic rate were 67%, 22%, 24% and 55% higher at elevated CO2 concentration than at ambient CO2 concentration, depending on the values of NH4+/NO3? ratio. These results indicated that elevating CO2 concentration did not mitigate the adverse effects of 100% NH4+-N (in nutrient solution) on the tomato seedlings. At both CO2 levels, NH4+/NO3? ratios of nutrient solutions strongly influenced almost every measure of plant performance, and nitrate-fed plants attained a greater biomass production, as compared to ammonium-fed plants. These phenomena seem to be related to the coordinated regulation of photosynthetic rate and cumulative water consumption of tomato seedlings.

Juan LI; Jian-min ZHOU; Zeng-qiang DUAN

2007-01-01T23:59:59.000Z

366

Combustion and emissions characteristics of high n-butanol/diesel ratio blend in a heavy-duty diesel engine and EGR impact  

Science Journals Connector (OSTI)

Abstract In this work, the combustion and emission fundamentals of high n-butanol/diesel ratio blend with 40% butanol (i.e., Bu40) in a heavy-duty diesel engine were investigated by experiment and simulation at constant engine speed of 1400 rpm and an IMEP of 1.0 MPa. Additionally, the impact of EGR was evaluated experimentally and compared with neat diesel fuel (i.e., Bu00). The results show that Bu40 has higher cylinder pressure, longer ignition delay, and faster burning rate than Bu00. Compared with Bu00, moreover, Bu40 has higher \\{NOx\\} due to wider combustion high-temperature region, lower soot due to local lower equivalence ratio distribution, and higher CO due to lower gas temperature in the late expansion process. For Bu40, EGR reduces \\{NOx\\} emissions dramatically with no obvious influence on soot. Meanwhile, there is no significant change in HC and CO emissions and indicated thermal efficiency (ITE) with EGR until EGR threshold is reached. When EGR rate exceeds the threshold level, HC and CO emissions increase dramatically, and ITE decreases markedly. Compared with Bu00, the threshold of Bu40 appears at lower EGR rate. Consequently, combining high butanol/diesel ratio blend with medium EGR has the potential to achieve ultra-low \\{NOx\\} and soot emissions simultaneously while maintaining high thermal efficiency level.

Zheng Chen; Zhenkuo Wu; Jingping Liu; Chiafon Lee

2014-01-01T23:59:59.000Z

367

Modeling the interface area aspect ratio of carbide grains in WCCo composites  

E-Print Network [OSTI]

Modeling the interface area aspect ratio of carbide grains in WC­Co composites Xiaokun Yuan a Keywords: Cemented carbide Electron backscattered diffraction Interface area aspect ratio Five parameter analysis The average interface area aspect ratios of carbide grains in WC­Co composites are measured from

Rohrer, Gregory S.

368

Sea turtle bycatch to fish catch ratios for differentiating Hawaii longline-caught seafood products  

E-Print Network [OSTI]

Sea turtle bycatch to fish catch ratios for differentiating Hawaii longline- caught seafood 30 May 2009 Keywords: Bycatch to catch ratios Sea turtles Sustainable seafood Hawaii longline tuna and swordfish. Bycatch to fish catch (B/C) ratios can differentiate seafood based on sea turtle

Hawai'i at Manoa, University of

369

An approach to determine a defensible spent fuel ratio.  

SciTech Connect (OSTI)

Sabotage of spent nuclear fuel casks remains a concern nearly forty years after attacks against shipment casks were first analyzed and has a renewed relevance in the post-9/11 environment. A limited number of full-scale tests and supporting efforts using surrogate materials, typically depleted uranium dioxide (DUO2), have been conducted in the interim to more definitively determine the source term from these postulated events. In all the previous studies, the postulated attack of greatest interest was by a conical shape charge (CSC) that focuses the explosive energy much more efficiently than bulk explosives. However, the validity of these large-scale results remain in question due to the lack of a defensible Spent Fuel Ratio (SFR), defined as the amount of respirable aerosol generated by an attack on a mass of spent fuel compared to that of an otherwise identical DUO2 surrogate. Previous attempts to define the SFR have resulted in estimates ranging from 0.42 to 12 and include suboptimal experimental techniques and data comparisons. Different researchers have suggested using SFR values of 3 to 5.6. Sound technical arguments exist that the SFR does not exceed a value of unity. A defensible determination of the SFR in this lower range would greatly reduce the calculated risk associated with the transport and dry storage of spent nuclear fuel. Currently, Oak Ridge National Laboratory (ORNL) is in possession of several samples of spent nuclear fuel (SNF) that were used in the original SFR studies in the 1980's and were intended for use in a modern effort at Sandia National Laboratories (SNL) in the 2000's. A portion of these samples are being used for a variety of research efforts. However, the entirety of SNF samples at ORNL is scheduled for disposition at the Waste Isolation Pilot Plant (WIPP) by approximately the end of 2015. If a defensible SFR is to be determined for use in storage and transportation security analyses, the need to begin this effort is urgent in order to secure the only known available SNF samples with a clearly defined path to disposal.

Durbin, Samuel G.; Lindgren, Eric Richard

2014-03-01T23:59:59.000Z

370

DOE Solid-State Lighting in Higher Ed Facilities  

SciTech Connect (OSTI)

The focus of the workshop was on higher education facilities because college and university campuses are an important market for lighting products and they use almost every kind of luminaire on the market. This workshop was seen as a chance for SSL manufacturers large and small to get the inside scoop from a group of people that specify, pay for, install, use, maintain, and dispose of lighting systems for nearly every type of application. Workshop attendees explored the barriers to SSL adoption, the applications where SSL products could work better than existing technologies, and where SSL luminaires are currently falling short. This report summarizes the Workshop activities and presentation highlights.

Miller, Naomi J.; Curry, Ku'Uipo J.

2010-07-20T23:59:59.000Z

371

Higher-dimensional numerical relativity: Formulation and code tests  

SciTech Connect (OSTI)

We derive a formalism of numerical relativity for higher-dimensional spacetimes and develop numerical codes for simulating a wide variety of five-dimensional (5D) spacetimes for the first time. First, the Baumgarte-Shapiro-Shibata-Nakamura formalism is extended for arbitrary spacetime dimensions D{>=}4, and then, the so-called cartoon method, which was originally proposed as a robust method for simulating axisymmetric 4D spacetimes, is described for 5D spacetimes of several types of symmetries. Implementing 5D numerical relativity codes with the cartoon methods, we perform test simulations by evolving a 5D Schwarzschild spacetime and a 5D spacetime composed of a gravitational-wave packet of small amplitude. The numerical simulations are stably performed for a sufficiently long time, as done in the 4D case, and the obtained numerical results agree well with the analytic solutions: The numerical solutions are shown to converge at the correct order. We also confirm that a long-term accurate evolution of the 5D Schwarzschild spacetime is feasible using the so-called puncture approach. In addition, we derive the Landau-Lifshitz pseudotensor in arbitrary dimensions, and show that it gives a robust tool for computing the energy flux of gravitational waves. The formulations and methods developed in this paper provide a powerful tool for studying nonlinear dynamics of higher-dimensional gravity.

Yoshino, Hirotaka; Shibata, Masaru [Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2G7 (Canada); Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, 606-8502 (Japan)

2009-10-15T23:59:59.000Z

372

Real-time operating systems at higher control  

SciTech Connect (OSTI)

Although virtually all development of real-time operating systems focuses on the lowest of the three traditional control levels, sheet economics demands higher level real-time OSs. Meeting this demand requires a major change in the mindset of the people who have been focusing on the lowest level of control. {open_quotes}These people are trying to deal with an elephant`s tail, but they don`t realize that there is an elephant attached to it.{close_quotes} For more than three decades, the historical real-time mindset, concepts and techniques have been driven by a particular pair of contexts. First is the application context, which can be characterized as {open_quotes}small, simple, centralized, static subsystems for low-level, sampled data, monitoring and first-order control.{close_quotes} Second is the hardware context, characterized by a scarcity of hardware resources due to size, weight, power and cost considerations. Both of these contexts are changing dramatically in ways that {open_quotes}have a significant impact on the concepts and techniques of real-time computing.{close_quotes} Hardware now offers much higher performance and the real-time domain is expanding upward in the application control hierarchy.

Jensen, E.D.

1995-01-01T23:59:59.000Z

373

Horizon entropy and higher curvature equations of state  

E-Print Network [OSTI]

The Clausius relation between entropy change and heat flux has previously been used to derive Einstein's field equations as an equation of state. In that derivation the entropy is proportional to the area of a local causal horizon, and the heat is the energy flux across the horizon, defined relative to an approximate boost Killing vector. We examine here whether a similar derivation can be given for extensions beyond Einstein gravity to include higher derivative and higher curvature terms. We review previous proposals which, in our opinion, are problematic or incomplete. Refining one of these, we assume that the horizon entropy depends on an approximate local Killing vector in a way that mimics the diffeomorphism Noether charge that yields the entropy of a stationary black hole. We show how this can be made to work if various restrictions are imposed on the nature of the horizon slices and the approximate Killing vector. Also, an integrability condition on the assumed horizon entropy density must hold. This can yield field equations of a Lagrangian constructed algebraically from the metric and Riemann tensor, but appears unlikely to allow for derivatives of curvature in the Lagrangian.

Raf Guedens; Ted Jacobson; Sudipta Sarkar

2012-01-02T23:59:59.000Z

374

Increase of Black Hole Entropy in Higher Curvature Gravity  

E-Print Network [OSTI]

We examine the Zeroth Law and the Second Law of black hole thermodynamics within the context of effective gravitational actions including higher curvature interactions. We show that entropy can never decrease for quasi-stationary processes in which a black hole accretes positive energy matter, independent of the details of the gravitational action. Within a class of higher curvature theories where the Lagrangian consists of a polynomial in the Ricci scalar, we use a conformally equivalent theory to establish that stationary black hole solutions with a Killing horizon satisfy the Zeroth Law, and that the Second Law holds in general for any dynamical process. We also introduce a new method for establishing the Second Law based on a generalization of the area theorem, which may prove useful for a wider class of Lagrangians. Finally, we show how one can infer the form of the black hole entropy, at least for the Ricci polynomial theories, by integrating the changes of mass and angular momentum in a quasistationary accretion process.

Ted Jacobson; Gungwon Kang; Robert C. Myers

1995-03-11T23:59:59.000Z

375

Development of nuclear models for higher energy calculations  

SciTech Connect (OSTI)

Two nuclear models for higher energy calculations have been developed in the regions of high and low energy transfer, respectively. In the former, a relativistic hybrid-type preequilibrium model is compared with data ranging from 60 to 800 MeV. Also, the GNASH exciton preequilibrium-model code with higher energy improvements is compared with data at 200 and 318 MeV. In the region of low energy transfer, nucleon-nucleus scattering is predominately a direct reaction involving quasi-elastic collisions with one or more target nucleons. We discuss various aspects of quasi-elastic scattering which are important in understanding features of cross sections and spin observables. These include (1) contributions from multi-step processes; (2) damping of the continuum response from 2p-2h excitations; (3) the ''optimal'' choice of frame in which to evaluate the nucleon-nucleon amplitudes; and (4) the effect of optical and spin-orbit distortions, which are included in a model based on the RPA the DWIA and the eikonal approximation. 33 refs., 15 figs.

Bozoian, M.; Siciliano, E.R.; Smith, R.D.

1988-01-01T23:59:59.000Z

376

First and second law analysis of a gasoline engine for various compression ratios  

Science Journals Connector (OSTI)

This article presents a comparative energy and exergy analyses of a single cylinder, four-stroke spark-ignition engine for three compression ratios. A Petter engine with variable compression ratio and ignition timing was used to obtain the experimental data at full load conditions for six engine speeds between 1,300 and 2,800 rpm. It was found that the first and the second law efficiencies increased with increasing compression ratio. The maximum extractable power was obtained at the compression ratio 6.2 and observed inversely proportional to the compression ratio.

Adnan Parlak; Yavuz Erbas; Halit Yasar; Hakan Soyhan; Cengiz Deniz

2009-01-01T23:59:59.000Z

377

Chemiluminescence-based multivariate sensing of local equivalence ratios in premixed atmospheric methane-air flames  

SciTech Connect (OSTI)

Chemiluminescence emissions from OH*, CH*, C2, and CO2 formed within the reaction zone of premixed flames depend upon the fuel-air equivalence ratio in the burning mixture. In the present paper, a new partial least square regression (PLS-R) based multivariate sensing methodology is investigated and compared with an OH*/CH* intensity ratio-based calibration model for sensing equivalence ratio in atmospheric methane-air premixed flames. Five replications of spectral data at nine different equivalence ratios ranging from 0.73 to 1.48 were used in the calibration of both models. During model development, the PLS-R model was initially validated with the calibration data set using the leave-one-out cross validation technique. Since the PLS-R model used the entire raw spectral intensities, it did not need the nonlinear background subtraction of CO2 emission that is required for typical OH*/CH* intensity ratio calibrations. An unbiased spectral data set (not used in the PLS-R model development), for 28 different equivalence ratio conditions ranging from 0.71 to 1.67, was used to predict equivalence ratios using the PLS-R and the intensity ratio calibration models. It was found that the equivalence ratios predicted with the PLS-R based multivariate calibration model matched the experimentally measured equivalence ratios within 7%; whereas, the OH*/CH* intensity ratio calibration grossly underpredicted equivalence ratios in comparison to measured equivalence ratios, especially under rich conditions ( > 1.2). The practical implications of the chemiluminescence-based multivariate equivalence ratio sensing methodology are also discussed.

Tripathi, Markandey M.; Krishnan, Sundar R.; Srinivasan, Kalyan K.; Yueh, Fang-Yu; Singh, Jagdish P.

2012-03-01T23:59:59.000Z

378

The geodesic rule for higher codimensional global defects  

E-Print Network [OSTI]

We generalize the geodesic rule to the case of formation of higher codimensional global defects. Relying on energetic arguments, we argue that, for such defects, the geometric structures of interest are the totally geodesic submanifolds. On the other hand, stochastic arguments lead to a diffusion equation approach, from which the geodesic rule is deduced. It turns out that the most appropriate geometric structure that one should consider is the convex hull of the values of the order parameter on the causal volumes whose collision gives rise to the defect. We explain why these two approaches lead to similar results when calculating the density of global defects by using a theorem of Cheeger and Gromoll. We present a computation of the probability of formation of strings/vortices in the case of a system, such as nematic liquid crystals, whose vacuum is $\\mathbb{R}P^2$.

Anthony J. Creaco; Nikos Kalogeropoulos

2008-05-15T23:59:59.000Z

379

Thermalization with chemical potentials, and higher spin black holes  

E-Print Network [OSTI]

We study the long time behaviour of local observables following a quantum quench in 1+1 dimensional conformal field theories possessing additional conserved charges besides the energy. We show that the expectation value of an arbitrary string of {\\it local} observables supported on a finite interval exponentially approaches an equilibrium value. The equilibrium is characterized by a temperature and chemical potentials defined in terms of the quenched state. For an infinite number of commuting conserved charges, the equilibrium ensemble is a generalized Gibbs ensemble (GGE). We compute the thermalization rate in a systematic perturbation in the chemical potentials, using a new technique to sum over an infinite number of Feynman diagrams. The above technique also allows us to compute relaxation times for thermal Green's functions in the presence of an arbitrary number of chemical potentials. In the context of a higher spin (hs[\\lambda]) holography, the partition function of the final equilibrium GGE is known to...

Mandal, Gautam; Sorokhaibam, Nilakash

2015-01-01T23:59:59.000Z

380

Holography as a Gauge Phenomenon in Higher Spin Duality  

E-Print Network [OSTI]

Employing the world line spinning particle picture we discuss the appearance of several different `gauges' which we use to gain a deeper explanation of the Collective/Gravity identification. We discuss transformations and algebraic equivalences between them. For a bulk identification we develop a `gauge independent' representation where all gauge constraints are eliminated. This `gauge reduction' of Higher Spin Gravity demonstrates that the physical content of 4D AdS HS theory is represented by the dynamics of an unconstrained scalar field in 6d. It is in this gauge reduced form that HS Theory can be seen to be equivalent to a 3+3 dimensional bi-local collective representation of CFT3.

Robert de Mello Koch; Antal Jevicki; Joao P. Rodrigues; Junggi Yoon

2014-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Influence of ICT Applications on Learning Process in Higher Education  

Science Journals Connector (OSTI)

Abstract Education is the great investment for the future. When investing in education, predicting future parameters and moving according to predictions is an essential part in the education process. In such an important subject, the use of technology cannot be avoided at all. ICT-based educations serves the purpose of both attended and non-attended (distance) education types. The aim of this research is to determine and find out the perceptions of students, motivations and their success rate those study with Information and Communication Technology Based technology supported environments and universities and evaluate these outcomes to find out potential issues of ICT applications through learning process in higher education institutes by conducting survey analysis.

Arif Sari

2014-01-01T23:59:59.000Z

382

Improved Combustion Health Monitoring Techniques - Longer Life, Higher Availability  

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

Combustion Health Combustion Health Monitoring Techniques Longer Life, Higher Availability Georgia Tech Jerry Seitzman SR102 * Modern Dry Low Emissions combustors have low emissions, but at a cost - significantly lower availability and reliability than "conventional" systems * The input data to the combustor monitor is pressure fluctuations, same as in currently available systems, but from this project the system analyzes the data differently, accounting for changes such as ambient temperature and doing analyses that show trends which indicate when planned maintenance should be performed to avoid an unplanned shut down. * Technology Transfer: Worked with 3 GT manufacturers. Method licensed to turbine monitoring company and installed at a number of power plants in the United States.

383

In situ Carbon 13 and Oxygen 18 Ratios of Atmospheric CO2 from Cape Grim,  

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

Oxygen Isotopes and Ratios » 13C and 18O Oxygen Isotopes and Ratios » 13C and 18O Ratios, Atmospheric CO2, Cape Grim In situ Carbon 13 and Oxygen 18 Ratios of Atmospheric CO2 from Cape Grim, Tasmania, Australia: 1982-1993 DOI: 10.3334/CDIAC/atg.db1014 data Data Investigators Francey R. J. and C. E. Allison Description Since 1982, a continuous program of sampling atmospheric CO2 to determine stable isotope ratios has been maintained at the Australian Baseline Air Pollution Station, Cape Grim, Tasmania (40°, 40'56"S, 144°, 41'18"E). The process of in situ extraction of CO2 from air, the preponderance of samples collected in conditions of strong wind from the marine boundary layer of the Southern Ocean, and the determination of all isotope ratios relative to a common high purity CO2 reference gas with isotopic δ13C close to

384

honeys were classified higher and were pre-ferred. Honeys with an ethanol content  

E-Print Network [OSTI]

honeys were classified higher and were pre- ferred. Honeys with an ethanol content higher than 100 with an ethanol con- tent higher than 1000 mg·kg-1 were classi- fied as 'extremely fermented'. Ethanol

Boyer, Edmond

385

Higher-order web link analysis using multilinear algebra.  

SciTech Connect (OSTI)

Linear algebra is a powerful and proven tool in web search. Techniques, such as the PageRank algorithm of Brin and Page and the HITS algorithm of Kleinberg, score web pages based on the principal eigenvector (or singular vector) of a particular non-negative matrix that captures the hyperlink structure of the web graph. We propose and test a new methodology that uses multilinear algebra to elicit more information from a higher-order representation of the hyperlink graph. We start by labeling the edges in our graph with the anchor text of the hyperlinks so that the associated linear algebra representation is a sparse, three-way tensor. The first two dimensions of the tensor represent the web pages while the third dimension adds the anchor text. We then use the rank-1 factors of a multilinear PARAFAC tensor decomposition, which are akin to singular vectors of the SVD, to automatically identify topics in the collection along with the associated authoritative web pages.

Kenny, Joseph P.; Bader, Brett William (Sandia National Laboratories, Albuquerque, NM); Kolda, Tamara Gibson

2005-07-01T23:59:59.000Z

386

Thermal and daylighting evaluation of the effect of varying aspect ratios in urban canyons in Curitiba, Brazil  

Science Journals Connector (OSTI)

Urbanization is commonly associated with densification which may lead to vertical growth or urban consolidation. The present study evaluates the daylighting potential as a function of urban morphology for the city of Curitiba ( 25 ° 2 5 ? 5 0 ? ? S 46 ° 1 6 ? 1 5 ? ? W ). It also presents a thermal analysis for a representative street axis orientation in this location showing indoor conditions within a test office for different aspect ratios. In Curitiba certain street axes were designated to allow densification (in the so-called structural sector of the city). As a consequence there is a great risk of urban canyons being formed as local legislation does not impose height restrictions to adjacent buildings. Daylight analysis was based on software simulations with LUZ DO SOL DLN ECOTECT and RADIANCE. Thermal analysis was carried out by means of computer simulations with the IDA ICEsoftware. It was verified that diagonal axial orientations relative to the north (rotated in 45°) provide higher daylighting potentials to buildings located in urban canyons. With regard to the thermal effect of varying the aspect ratio in an east-west street axis results confirm daylighting simulations showing the interrelation between both comfort parameters.

Eduardo Krüger; Mauro Suga

2009-01-01T23:59:59.000Z

387

Fabrication and characterization of As[subscript 2]S[subscript 3]/Y[subscript 3]Fe[subscript 5]O[subscript 12] and Y[subscript 3]Fe[subscript 5]O[subscript 12]/SOI strip-loaded waveguides for integrated optical isolator applications  

E-Print Network [OSTI]

We report two novel strategies to integrate magneto-optical oxides on oxidized silicon and SOI platforms based on strip-loaded waveguide structures. By using conventional waveguide fabrication and thin film deposition ...

Ross, Caroline A.

388

" Row: NAICS Codes; Column: Energy-Consumption Ratios;"  

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

N7.1. Consumption Ratios of Fuel, 1998;" N7.1. Consumption Ratios of Fuel, 1998;" " Level: National and Regional Data; " " Row: NAICS Codes; Column: Energy-Consumption Ratios;" " Unit: Varies." " "," ",,,"Consumption"," " " "," ",,"Consumption","per Dollar"," " " "," ","Consumption","per Dollar","of Value","RSE" "NAICS"," ","per Employee","of Value Added","of Shipments","Row" "Code(a)","Subsector and Industry","(million Btu)","(thousand Btu)","(thousand Btu)","Factors"

389

" Row: NAICS Codes; Column: Energy-Consumption Ratios;"  

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

1 Consumption Ratios of Fuel, 2002;" 1 Consumption Ratios of Fuel, 2002;" " Level: National and Regional Data; " " Row: NAICS Codes; Column: Energy-Consumption Ratios;" " Unit: Varies." " "," ",,,"Consumption"," " " "," ",,"Consumption","per Dollar"," " " "," ","Consumption","per Dollar","of Value","RSE" "NAICS"," ","per Employee","of Value Added","of Shipments","Row" "Code(a)","Subsector and Industry","(million Btu)","(thousand Btu)","(thousand Btu)","Factors"

390

E-Print Network 3.0 - avalanches branching ratios Sample Search...  

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

20 J.Stat.Mech.(2010)P02015 ournal of Statistical Mechanics Summary: ) and subcritical dynamics: individual avalanches are either subcritical (average branching ratio...

391

Effect of Compression Ratio and Piston Geometry on RCCI load limit  

Broader source: Energy.gov [DOE]

Explores the effect of compression ratio and piston design on the practical load range of bio-fueled Reactivity Controlled Compression Ignition (RCCI) combustion.

392

E-Print Network 3.0 - aspect ratio wings Sample Search Results  

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

S., "Limit Cycle Oscillations in High-Aspect-Ratio Wings," Jour- nal of Fluids... of Aerodynamic and Structural Geometrical Nonlinearities on Aeroelastic Behavior of...

393

E-Print Network 3.0 - average aspect ratios Sample Search Results  

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

aspect ratio... results between them. Turbulent flow in enclosures with ... Source: Massachusetts at Amherst, University of - Center for Energy Efficiency and Renewable Energy,...

394

Metal-mass-to-light ratios of the Perseus cluster out to the virial radius  

E-Print Network [OSTI]

We analyzed XMM-Newton data of the Perseus cluster out to $\\sim$1 Mpc, or approximately half the virial radius. Using the flux ratios of Lyalpha lines of H-like Si and S to Kalpha line of He-like Fe, the abundance ratios of Si/Fe and S/Fe of the intracluster medium (ICM) were derived using the APEC plasma code v2.0.1. The temperature dependence of the line ratio limits the systematic uncertainty in the derived abundance ratio. The Si/Fe and S/Fe in the ICM of the Perseus cluster show no radial gradient. The emission-weighted averages of the Si/Fe and S/Fe ratios outside the cool core are 0.91 +- 0.08 and 0.93 +- 0.10, respectively, in solar units according to the solar abundance table of Lodders (2003). These ratios indicate that most Fe was synthesized by supernovae Ia. We collected K-band luminosities of galaxies and calculated the ratio of Fe and Si mass in the ICM to K-band luminosity, iron-mass-to-light ratio (IMLR) and silicon-mass-to-light ratio (SMLR). Within $\\sim$1 Mpc, the cumulative IMLR and SMLR ...

Matsushita, K; Sasaki, T; Sato, K; Simionescu, A

2013-01-01T23:59:59.000Z

395

E-Print Network 3.0 - aspect ratio Sample Search Results  

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

time scale of the resulting motion. In both series the initial aspect ratio a... two orders of magnitude. The initial basal lengths and range of aspect ... Source: Huppert,...

396

E-Print Network 3.0 - aspect ratio effects Sample Search Results  

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

time scale of the resulting motion. In both series the initial aspect ratio a... two orders of magnitude. The initial basal lengths and range of aspect ... Source: Huppert,...

397

E-Print Network 3.0 - affecting sex ratio Sample Search Results  

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

colony members (Sundstrom & Boomsma, 2001). Since brood... Ross Biology letters 2009 Decisions over what sex ratio to produce can have far-reaching evolutionary... genetic...

398

Modeling and Analysis of Natural Gas and Gasoline In A High Compression Ratio High Efficiency ICRE  

Broader source: Energy.gov [DOE]

performance of a high compression ratio (32:1 to 74:1) high efficiency (50 to 60% BTE) ICRE operating on natural gas and gasoline

399

Complete Theoretical Treatment of the Transmittance Ratio Ultraviolet/Visible Spectrophotometric Stray Radiant Energy Test Method  

Science Journals Connector (OSTI)

This paper develops the theoretical basis behind the transmittance ratio test method for determining the relative stray radiant energy level in a double-beam dispersive...

Fleming, Paddy

2009-01-01T23:59:59.000Z

400

E-Print Network 3.0 - attending higher education Sample Search...  

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

Sample search results for: attending higher education Page: << < 1 2 3 4 5 > >> 1 The political economy of mass higher education: shrinking the 'public' and elevating the 'market'...

Note: This page contains sample records for the topic "higher stripping ratios" 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

Measurements of volatile organic compounds at a suburban ground site (T1) in Mexico City during the MILAGRO 2006 campaign: Measurement comparison, emission ratios, and source attribution  

SciTech Connect (OSTI)

Volatile organic compound (VOC) mixing ratios were measured with two different instruments at the T1 ground site in Mexico City during the Megacity Initiative: Local and Global Research Observations (MILAGRO) campaign in March of 2006. A gas chromatograph with flame ionization detector (GC-FID) quantified 18 light alkanes, alkenes and acetylene while a proton-transfer-reaction ion-trap mass spectrometer (PIT-MS) quantified 12 VOC species including oxygenated VOCs (OVOCs) and aromatics. A GC separation system was used in conjunction with the PIT-MS (GC-PIT-MS) to evaluate PIT-MS measurements and to aid in the identification of unknown VOCs. The VOC measurements are also compared to simultaneous canister samples and to two independent proton-transfer-reaction mass spectrometers (PTR-MS) deployed on a mobile and an airborne platform during MILAGRO. VOC diurnal cycles demonstrate the large influence of vehicle traffic and liquid propane gas (LPG) emissions during the night and photochemical processing during the afternoon. Emission ratios for VOCs and OVOCs relative to CO are derived from early-morning measurements. Average emission ratios for non-oxygenated species relative to CO are on average a factor of {approx}2 higher than measured for US cities. Emission ratios for OVOCs are estimated and compared to literature values the northeastern US and to tunnel studies in California. Positive matrix factorization analysis (PMF) is used to provide insight into VOC sources and processing. Three PMF factors were distinguished by the analysis including the emissions from vehicles, the use of liquid propane gas and the production of secondary VOCs + long-lived species. Emission ratios to CO calculated from the results of PMF analysis are compared to emission ratios calculated directly from measurements. The total PIT-MS signal is summed to estimate the fraction of identified versus unidentified VOC species.

Bon, D.M.; Springston, S.; M.Ulbrich, I.; de Gouw, J. A.; Warneke, C.; Kuster, W. C.; Alexander, M. L.; Baker, A.; Beyersdorf, A. J.; Blake, D.; Fall, R.; Jimenez, J. L., Herndon, S. C.; Huey, L. G.; Knighton, W. B.; Ortega, J.; Vargas, O.

2011-03-16T23:59:59.000Z

402

Kaon production and kaon to pion ratio in Au+Au collisions at {radical}(s{sub NN})=130 GeV  

SciTech Connect (OSTI)

Mid-rapidity transverse mass spectra and multiplicity densities of charged and neutral kaons are reported for Au+Au collisions at {radical}s{sub NN}=130 GeV at RHIC. The spectra are exponential in transverse mass, with an inverse slope of about 280 MeV in central collisions. The multiplicity densities for these particles scale with the negative hadron pseudo-rapidity density. The charged kaon to pion ratios are K{sup +}/{pi}{sup -} = 0.161 {+-} 0.002(stat) {+-} 0.024(syst) and K{sup -}/{pi}{sup -} = 0.146 {+-} 0.002(stat) {+-} 0.022(syst) for the most central collisions. The K{sup +}/{pi}{sup -} ratio is lower than the same ratio observed at the SPS while the K{sup -}/{pi}{sup -} is higher than the SPS result. Both ratios are enhanced by about 50% relative to p+p and {bar p}+p collision data at similar energies.

Adler, C.; Ahammed, Z.; Allgower, C.; Amonett, J.; Anderson, B.D.; Anderson, M.; Arkhipkin, D.; Averichev, G.S.; Balewski, J.; Barannikova, O.; Barnby, L.S.; Baudot, J.; Bekele, S.; Belaga, V.V.; Bellwied, R.; Berger, J.; Bichsel, H.; Billmeier, A.; Bland, L.C.; Blyth, C.O.; Bonner, B.E.; Boucham, A.; Brandin, A.; Bravar, A.; Cadman, R.V.; Caines, H.; Calderon de la Barca Sanchez, M.; Cardenas, A.; Carroll, J.; Castillo, J.; Castro, M.; Cebra, D.; Chaloupka, P.; Chattopadhyay, S.; Chen, Y.; Chernenko, S.P.; Cherney, M.; Chikanian, A.; Choi, B.; Christie, W.; Coffin, J.P.; Cormier, T.M.; Cramer, J.G.; Crawford, H.J.; Deng, W.S.; Derevschikov, A.A.; Didenko, L.; Dietel, T.; Draper, J.E.; Dunin, V.B.; Dunlop, J.C.; Eckardt, V.; Efimov, L.G.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Fachini, P.; Faine, V.; Faivre, J.; Filimonov, K.; Finch, E.; Fisyak, Y.; Flierl, D.; Foley, K.J.; Fu, J.; Gagliardi, C.A.; Gagunashvili, N.; Gans, J.; Gaudichet, L.; Germain, M.; Geurts, F.; Ghazikhanian, V.; Grachov, O.; Grigoriev, V.; Guedon, M.; Gushin, E.; Hallman, T.J.; Hardtke, D.; Harris, J.W.; Henry, T.W.; Heppelmann, S.; Herston, T.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffmann, G.W.; Horsley, M.; Huang, H.Z.; Humanic, T.J.; Igo, G.; Ishihara, A.; Ivanshin, Yu.I.; Jacobs, P.; Jacobs, W.W.; Janik, M.; Johnson, I.; Jones, P.G.; Judd, E.G.; Kaneta, M.; Kaplan, M.; Keane, D.; Kiryluk, J.; Kisiel, A.; Klay, J.; Klein, S.R.; Klyachko, A.; Konstantinov, A.; Kopytine, S.M.; Kotchenda, L.; Kovalenko, A.D.; Kramer, M.; Kravtsov, P.; Krueger, K.; Kuhn, C.; Kulikov, A.I.; Kunde, G.J.; Kunz, C.L.; Kutuev, R.Kh.; Kuznetsov, A.A.; Lakehal-Ayat, L.; Lamont, M.A.C.; Landgraf, J.M.; Lange, S.; Lansdell, C.P.; Lasiuk, B.; Laue, F.; Lauret, J.; Lebedev, A.; Lednicky, R.; Leontiev, V.M.; LeVine, M.J.; Li, Q.; Lindenbaum, S.J.; Lisa, M.A.; Liu, F.; Liu, L.; Liu, Z.; Liu, Q.J.; Ljubicic, T.; Llope, W.J.; LoCurto, G.; Long, H.; Longacre, R.S.; et al.

2002-06-13T23:59:59.000Z

403

Results of High R-Ratio Fatigue Crack Growth Tests on 304 Stainless Steel in Low Oxygen Water  

SciTech Connect (OSTI)

Fatigue crack growth rate tests were performed on a 304 stainless steel compact tension (CT) specimen in water with 40-60 cc/kg H[sub]2. Data in the literature for CT tests show minor environmental effects in hydrogenated water, but higher effects in oxygenated water. However, the PWR data presented by Bernard, et al (1979) were taken at low stress ratios (R=0.05) and high stress intensity levels (delta K=16-41 MPa square root m). The purpose of these tests is to explore the crack growth rate characteristics of 304 SS in hydrogenated water at higher R values (0.7 and 0.83) and lower delta K values (11.0 and 7.7 MPa square root m). Each set of R, delta K conditions were tested at frequencies of 0.1, 0.01 and 0.001 Hz. The results show a pronounced effect on crack growth rates when compared to available literature data on air rates.

Evans, W. M.; Wire, G. L.

2002-08-01T23:59:59.000Z

404

EVALUATION OF REQUIREMENTS FOR THE DWPF HIGHER CAPACITY CANISTER  

SciTech Connect (OSTI)

The Defense Waste Processing Facility (DWPF) is considering the option to increase canister glass capacity by reducing the wall thickness of the current production canister. This design has been designated as the DWPF Higher Capacity Canister (HCC). A significant decrease in the number of canisters processed during the life of the facility would be achieved if the HCC were implemented leading to a reduced overall reduction in life cycle costs. Prior to implementation of the change, Savannah River National Laboratory (SRNL) was requested to conduct an evaluation of the potential impacts. The specific areas of interest included loading and deformation of the canister during the filling process. Additionally, the effect of the reduced wall thickness on corrosion and material compatibility needed to be addressed. Finally the integrity of the canister during decontamination and other handling steps needed to be determined. The initial request regarding canister fabrication was later addressed in an alternate study. A preliminary review of canister requirements and previous testing was conducted prior to determining the testing approach. Thermal and stress models were developed to predict the forces on the canister during the pouring and cooling process. The thermal model shows the HCC increasing and decreasing in temperature at a slightly faster rate than the original. The HCC is shown to have a 3°F ?T between the internal and outer surfaces versus a 5°F ?T for the original design. The stress model indicates strain values ranging from 1.9% to 2.9% for the standard canister and 2.5% to 3.1% for the HCC. These values are dependent on the glass level relative to the thickness transition between the top head and the canister wall. This information, along with field readings, was used to set up environmental test conditions for corrosion studies. Small 304-L canisters were filled with glass and subjected to accelerated environmental testing for 3 months. No evidence of stress corrosion cracking was indicated on either the canisters or U-bend coupons. Calculations and finite element modeling were used to determine forces over a range of handling conditions along with possible forces during decontamination. While expected reductions in some physical characteristics were found in the HCC, none were found to be significant when compared to the required values necessary to perform its intended function. Based on this study and a review of successful testing of thinner canisters at West Valley Demonstration Project (WVDP), the mechanical properties obtained with the thinner wall do not significantly undermine the ability of the canister to perform its intended function.

Miller, D.; Estochen, E.; Jordan, J.; Kesterson, M.; Mckeel, C.

2014-08-05T23:59:59.000Z

405

Bench-Scale Development of a Hot Carbonate Absorption Process with Crystallization-Enabled High Pressure Stripping for Post-Combustion CO{sub 2} Capture  

SciTech Connect (OSTI)

This report summarizes the methodology and preliminary results of a techno-economic analysis on a hot carbonate absorption process (Hot-CAP) with crystallization-enabled high pressure stripping for post-combustion CO{sub 2} capture (PCC). This analysis was based on the Hot-CAP that is fully integrated with a sub-critical steam cycle, pulverized coal-fired power plant adopted in Case 10 of the DOE/NETL’s Cost and Performance Baseline for Fossil Energy Plants. The techno-economic analysis addressed several important aspects of the Hot-CAP for PCC application, including process design and simulation, equipment sizing, technical risk and mitigation strategy, performance evaluation, and cost analysis. Results show that the net power produced in the subcritical power plant equipped with Hot-CAP is 611 MWe, greater than that with Econoamine (550 MWe). The total capital cost for the Hot-CAP, including CO{sub 2} compression, is $399 million, less than that for the Econoamine PCC ($493 million). O&M costs for the power plant with Hot-CAP is $175 million annually, less than that with Econoamine ($178 million). The 20-year levelized cost of electricity (LCOE) for the power plant with Hot-CAP, including CO2 transportation and storage, is 119.4 mills/kWh, a 59% increase over that for the plant without CO2 capture. The LCOE increase caused by CO{sub 2} capture for the Hot-CAP is 31% lower than that for its Econoamine counterpart.

Lu, Yongqi

2014-02-01T23:59:59.000Z

406

Free Boundary, High Beta Equilibrium in a Large Aspect Ratio Tokamak with Nearly  

E-Print Network [OSTI]

Free Boundary, High Beta Equilibrium in a Large Aspect Ratio Tokamak with Nearly Circular Plasma­boundary, high­beta equi­ libria in large aspect ratio tokamaks with a nearly circular plasma boundary in tokamaks for the purpose of developing an economic fusion reactor. It has long been recognized

407

E-Print Network 3.0 - aspect ratio au Sample Search Results  

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

determine the mean ratio of C2 to CN. With a mean log(C2CN) 0.1 0.2 between 4 to 3 AU, Hale-Bopp falls... could explain the observed small QCN QOH ratio seen in comets with...

408

Quantification of Nanoscale Density Fluctuations in Biological Cells/Tissues: Inverse Participation Ratio (IPR) Analysis of  

E-Print Network [OSTI]

Ratio (IPR) Analysis of Transmission Electron Microscopy Images and Implications for Early-Stage Cancer analysis of the inverse participation ratio (IPR) of the eigenfunctions of these optical lattices at the nanoscales. First, the IPR analysis is validated in experiments with models of disordered systems fabricated

Pradhan, Prabhakar

409

Algae/Bacteria Ratio in High-Rate Ponds Used for Waste Treatment  

Science Journals Connector (OSTI)

...ALGAE/BACTERIAL RATIO IN HIGH-RATE PONDS 573 1140 1120...ALGAE/BACTERIAL RATIO IN HIGH-RATE PONDS 575 and N is the...favorable operating conditions with high algal productivity, the algae...utilization in converted oil- fired boiler. Resource Recov. Conserv...

Gideon Oron; Gedaliah Shelef; Anna Levi; Arie Meydan; Yossef Azov

1979-10-01T23:59:59.000Z

410

Measurement of lithium isotope ratios by quadrupole-ICP-MS: application to seawater and natural carbonates  

E-Print Network [OSTI]

Measurement of lithium isotope ratios by quadrupole-ICP-MS: application to seawater and natural method for lithium isotope ratio (7 Li/6 Li) determinations with low total lithium consumption ( lithium from all matrix elements using small volume resin (2 ml/3.4 meq AG 50W-X8) and low volume elution

Weston, Ken

411

Rapidity dependence of the photon to pion production ratio in high energy collisions  

E-Print Network [OSTI]

We investigate rapidity dependence of the ratio of photon and pion production cross sections in high energy proton (deuteron) - nucleus collisions at RHIC and LHC. This ratio, and its rapidity dependence can be a sensitive probe of high density QCD (Color Glass Condensate) dynamics and shed further light on the role of saturation physics at RHIC and LHC.

Jamal Jalilian-Marian

2007-03-22T23:59:59.000Z

412

Signal-to-noise ratio of Geiger-mode avalanche photodiode single-photon  

E-Print Network [OSTI]

Signal-to-noise ratio of Geiger-mode avalanche photodiode single-photon counting detectors Kimberly Kolb #12;Signal-to-noise ratio of Geiger-mode avalanche photodiode single-photon counting detectors, Rochester, New York 14623 Abstract. Geiger-mode avalanche photodiodes (GM-APDs) use the avalanche mechanism

Figer, Donald F.

413

Negative Association of Neuroticism with Brain Volume Ratio in Healthy Humans  

E-Print Network [OSTI]

Negative Association of Neuroticism with Brain Volume Ratio in Healthy Humans Brian Knutson, Reza Momenan, Robert R. Rawlings, Grace W. Fong, and Daniel Hommer Background: Brain volume decreases reactivity (i.e., neuroti- cism) would also predict reductions in brain volume. Methods: Brain volume ratios

Knutson, Brian

414

Prediction of Ultra-High Aspect Ratio Nanowires from Self-Assembly  

E-Print Network [OSTI]

Prediction of Ultra-High Aspect Ratio Nanowires from Self-Assembly Zhigang Wu and Jeffrey C to investigate the possible self-assembly of nanoscale objects into ultrahigh aspect ratio chains and wires. Self-assembly17,18 from nanosize building blocks is regarded as one of the most promising methods

Wu, Zhigang

415

Size Ratio Effects on Interparticle Interactions and Phase Behavior of Microsphere-Nanoparticle Mixtures  

E-Print Network [OSTI]

Size Ratio Effects on Interparticle Interactions and Phase Behavior of Microsphere-Nanoparticle and phase behavior of microsphere-nanoparticle mixtures of high charge asymmetry and varying size ratio. In the absence of nanoparticles, negligibly charged microspheres flocculate as a result of van der Waals

Lewis, Jennifer

416

Power and Effective Study Size Based on Approximations to the Expected Likelihood Ratio  

E-Print Network [OSTI]

Power and Effective Study Size Based on Approximations to the Expected Likelihood Ratio Test statistical power and precision of heritability estimates can be difficult particularly in complex pedigrees. Previous work focused on the power to detect heritability by using the expectation of the likelihood ratio

Washington at Seattle, University of

417

Steiner ratio typeset December 5, 1994 Smith & Smith Warren D. Smith  

E-Print Network [OSTI]

Steiner ratio typeset December 5, 1994 Smith & Smith Warren D. Smith 3 wds@research.nj.nec.com J. MacGregor Smith y jmsmith@umaecs.edu December 5, 1994 Abstract --- The ``Steiner minimal tree'' (SMT. This is a companion paper to D­Z. Du and W.D.Smith: Three disproofs of the Gilbert­Pollak Steiner ratio conjecture

Smith, J. MacGregor

418

Mapping the Energy Distribution of SERRS Hot Spots from Anti-Stokes to Stokes Intensity Ratios  

E-Print Network [OSTI]

Mapping the Energy Distribution of SERRS Hot Spots from Anti- Stokes to Stokes Intensity Ratios in the anti-Stokes to Stokes intensity ratios in single-molecule surface-enhanced resonance Raman scattering-enhanced Raman scattering. Moreover, a methodology to estimate the distribution of resonance energies

Brolo, Alexandre G.

419

Modeling of Air-Fuel Ratio Dynamics of Gasoline Combustion Engine with ARX Network  

E-Print Network [OSTI]

DS-06-1351 Modeling of Air-Fuel Ratio Dynamics of Gasoline Combustion Engine with ARX Network Tomás dynamics of gasoline engines during transient operation. With a collection of input-output data measured;Modeling of Air-Fuel Ratio Dynamics of Gasoline Combustion Engine with ARX Network I. INTRODUCTION

Johansen, Tor Arne

420

Low stress development of poly,,methylmethacrylate... for high aspect ratio structures  

E-Print Network [OSTI]

-beam lithography can provide adequate resolution for research and development of magnetic heads, and at 100 kV can dominated by I-line steppers, the rate of decrease in feature sizes is much more rapid than-ratio plating stencil. For sufficient transmission of magnetic flux, this upper pole must have an aspect ratio

Haller, Gary L.

Note: This page contains sample records for the topic "higher stripping ratios" 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

Temporal variability of uranium concentrations and 234 activity ratios in the Mississippi river and its tributaries  

E-Print Network [OSTI]

Temporal variability of uranium concentrations and 234 U/238 U activity ratios in the Mississippi Department of Geology and Geophysics, Texas A&M University, College Station, TX 77845, United States c/238 U activity ratios and total dissolved uranium concentrations in the Lower Mississippi River at New

422

UDC 622.276 A NEW APPROACH CALCULATE OIL-GAS RATIO  

E-Print Network [OSTI]

UDC 622.276 A NEW APPROACH CALCULATE OIL-GAS RATIO FOR GAS CONDENSATE AND VOLATILE OIL RESERVOIRS. In this work, we develop a new approach to calculate oil-gas ratio (Rv) by matching PVT experimental data laboratory analysis of eight gas condensate and five volatile oil fluid samples; selected under a wide range

Fernandez, Thomas

423

Master thesis project at the Netherlands Forensic Development and validation of Likelihood Ratio  

E-Print Network [OSTI]

Master thesis project at the Netherlands Forensic Institute: Development and validation of Likelihood Ratio methods In the forensic scientific community, it is widely accepted to present a likelihood in contributions from the Netherlands Forensic Institute to the Dutch legal system. A LR is defined as the ratio

Boucherie, Richard J.

424

Raindrop axis ratios, fall velocities and size distribution over Sumatra from 2D-Video Disdrometer measurement  

Science Journals Connector (OSTI)

Raindrop axis ratio, falling velocity and size distribution are important in broad list of applications. However, they are not frequently observed in the equatorial region. This paper elucidated the characteristics of raindrop axis ratio, falling velocity and size distribution based on 2D-Video Disdrometer (2DVD) data that have been collected in the equatorial Indonesia, particularly at Kototabang (hereafter called KT), west Sumatra, Indonesia (0.20°S, 100.32°E, 864 m above sea level). A comprehensive follow-up of the previous study on the natural variability of raindrop size distributions (DSDs) is presented. Precipitation was classified through 1.3-GHz wind profiler observation. The dependence of raindrop falling velocity and axis ratio on rainfall type was not clearly observed. Overall, measured raindrop fall velocities were in good agreement with Gunn–Kinzer's data. Raindrop axis ratio at KT was more spherical than that of artificial rain and equilibrium model, and close to the values reported in the turbulent high shear zone of surface layer which can be partially due to the effect of the instrument errors (e.g., location and container shape). Of some natural variations of DSD investigated, the dependence of DSD on rainfall rate and rainfall type as well as diurnal variation was clearly visible. A striking contrast between the stratiform and convective rains is that the size distributions from the stratiform (convective) rains tend to narrow (broaden) with increasing rainfall rates. For rainfall rate R < 10 mm/h, the size distribution of stratiform was broader than that of convective. On the other hand, at higher rainfall rate more large-sized drops were found in convective rain. During the convective rain, very large-sized drops were found mainly at the very start of rain event while for the stratiform they were found to be associated with a strong bright band. In diurnal basis, the \\{DSDs\\} in the morning hours were narrower than those in the evening which was indicated by smaller Dm values in the morning hours than their counterparts in the evening. Rainfall type dependence and diurnal variation of DSD lead to significant variation of Z–R relations so that they must be considered to increase the accuracy of Z–R conversion from weather radar in this region. Consistent with the previous study, lack of seasonal DSD variability was also found in this work that would be due to significant local convective and orographic effect at this region throughout the year. However, Dm values in our result were larger than the typical orographic DSD.

Marzuki; Walter L. Randeu; Toshiaki Kozu; Toyoshi Shimomai; Hiroyuki Hashiguchi; Michael Schönhuber

2013-01-01T23:59:59.000Z

425

High Peak-to-Valley Current Ratio GaAs/InGaAs/InAs Double Stepped Quantum Well Resonant Interband Tunneling Diodes at Room Temperature  

Science Journals Connector (OSTI)

A high ratio of the peak current density to the valley current density of current-voltage characteristic is accomplished for the double stepped quantum well resonant interband tunneling diode (DSQW RITD). Results for good quantum confinement effect and long drift layer with deep quantum well GaAs/In0.59Ga0.41As/InAs DSQW RITD that has a lower valley current density of about 0.98 A/cm2 and a higher peak-to-valley current ratio (PVCR) reached 622 at room temperature than conventionally designed double quantum well resonant interband tunneling diodes (DQW RITDs) are presented. This PVCR value is also the highest value than those of the other resonant tunneling diodes.

Chih-Chin Yang; Kuang-Chih Huang; Yan-Kuin Su

1996-01-01T23:59:59.000Z

426

Determination of Light Water Reactor Fuel Burnup with the Isotope Ratio Method  

SciTech Connect (OSTI)

For the current project to demonstrate that isotope ratio measurements can be extended to zirconium alloys used in LWR fuel assemblies we report new analyses on irradiated samples obtained from a reactor. Zirconium alloys are used for structural elements of fuel assemblies and for the fuel element cladding. This report covers new measurements done on irradiated and unirradiated zirconium alloys, Unirradiated zircaloy samples serve as reference samples and indicate starting values or natural values for the Ti isotope ratio measured. New measurements of irradiated samples include results for 3 samples provided by AREVA. New results indicate: 1. Titanium isotope ratios were measured again in unirradiated samples to obtain reference or starting values at the same time irradiated samples were analyzed. In particular, 49Ti/48Ti ratios were indistinguishably close to values determined several months earlier and to expected natural values. 2. 49Ti/48Ti ratios were measured in 3 irradiated samples thus far, and demonstrate marked departures from natural or initial ratios, well beyond analytical uncertainty, and the ratios vary with reported fluence values. The irradiated samples appear to have significant surface contamination or radiation damage which required more time for SIMS analyses. 3. Other activated impurity elements still limit the sample size for SIMS analysis of irradiated samples. The sub-samples chosen for SIMS analysis, although smaller than optimal, were still analyzed successfully without violating the conditions of the applicable Radiological Work Permit

Gerlach, David C.; Mitchell, Mark R.; Reid, Bruce D.; Gesh, Christopher J.; Hurley, David E.

2007-11-01T23:59:59.000Z

427

Retrieval of Aerosol Optical Depth in Vicinity of Broken Clouds from Reflectance Ratios: Sensitivity Study  

SciTech Connect (OSTI)

We conducted a sensitivity study to better understand the potential of a new method for retrieving aerosol optical depth (AOD) under partly cloudy conditions. This method exploits reflectance ratios in the visible spectral range and provides an effective way to avoid three-dimensional (3D) cloud effects. The sensitivity study is performed for different observational conditions and random errors in input data. The results of the sensitivity study suggest that this ratio method has the ability to detect clear pixels even in close proximity to clouds. Such detection does not require a statistical analysis of the two-dimensional (2D) horizontal distribution of reflected solar radiation, and thus it could be customized for operational retrievals. In comparison with previously suggested approaches, the ratio method has the capability to increase the "harvest" of clear pixels. Similar to the traditional Independent Pixel Approximation (IPA), the ratio method has a low computational cost for retrieving AOD. In contrast to the IPA method, the ratio method provides much more accurate estimations of the AOD values under broken cloud conditions: pixel-based and domain-averaged estimations of errors in AOD are about 25% and 10%, respectively. Finally, both the ratio-based cloud screening and the accuracy of domain-averaged ratio-based AOD values do not suffer greatly when 5% random errors are introduced in the reflectances.

Kassianov, Evgueni I.; Ovtchinnikov, Mikhail; Berg, Larry K.; McFarlane, Sally A.; Flynn, Connor J.

2009-09-01T23:59:59.000Z

428

METAL-MASS-TO-LIGHT RATIOS OF THE PERSEUS CLUSTER OUT TO THE VIRIAL RADIUS  

SciTech Connect (OSTI)

We analyzed XMM-Newton data of the Perseus cluster out to {approx}1 Mpc, or approximately half the virial radius. Using the flux ratios of Ly{alpha} lines of H-like Si and S to K{alpha} line of He-like Fe, the abundance ratios of Si/Fe and S/Fe of the intracluster medium (ICM) were derived using the APEC plasma code v2.0.1. The temperature dependence of the line ratio limits the systematic uncertainty in the derived abundance ratio. The Si/Fe and S/Fe in the ICM of the Perseus cluster show no radial gradient. The emission-weighted averages of the Si/Fe and S/Fe ratios outside the cool core are 0.91 {+-} 0.08 and 0.93 {+-} 0.10, respectively, in solar units according to the solar abundance table of Lodders. These ratios indicate that most Fe was synthesized by supernovae Ia. We collected K-band luminosities of galaxies and calculated the ratio of Fe and Si mass in the ICM to K-band luminosity, iron-mass-to-light ratio (IMLR), and silicon-mass-to-light ratio (SMLR). Within {approx}1 Mpc, the cumulative IMLR and SMLR increase with radius. Using Suzaku data for the northwest and east directions, we also calculated the IMLR out to {approx}1.8 Mpc, or about the virial radius. We constrained the SMLR out to this radius and discussed the slope of the initial mass function of stars in the cluster. Using the cumulative IMLR profile, we discuss the past supernova Ia rate.

Matsushita, K.; Sakuma, E.; Sasaki, T.; Sato, K. [Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601 (Japan)] [Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601 (Japan); Simionescu, A., E-mail: matusita@rs.kagu.tus.ac.jp [KIPAC, Stanford University, 452 Lomita Mall, Stanford, CA 94305 (United States)

2013-02-20T23:59:59.000Z

429

" Row: NAICS Codes; Column: Energy-Consumption Ratios;"  

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

1 Consumption Ratios of Fuel, 2006;" 1 Consumption Ratios of Fuel, 2006;" " Level: National and Regional Data; " " Row: NAICS Codes; Column: Energy-Consumption Ratios;" " Unit: Varies." ,,,,"Consumption" ,,,"Consumption","per Dollar" ,,"Consumption","per Dollar","of Value" "NAICS",,"per Employee","of Value Added","of Shipments" "Code(a)","Subsector and Industry","(million Btu)","(thousand Btu)","(thousand Btu)" ,,"Total United States" 311,"Food",879.8,5,2.2 3112," Grain and Oilseed Milling",6416.6,17.5,5.7

430

Determination of the ratio of specific heats for gases through the use of electrosonics  

E-Print Network [OSTI]

jfier+ + ~ e' e a e e a ?e e e e Velooity of Sound for Pure Propane ? ~ Variation of ~ ~ with Preeeure for Pure (at)T Propane' a a m m E a a w ~ a Ratio of Syeeifio Heate for Pure Propane- Oosparieon of V Data for Different Oaeee gl g6 ~Tab o... data ior Cho ratio of sposifio heatsi V& are re? e 0 ported for gaseous propane at 100 F~ and lg0 pg snd for pressures up to @0 pounds por square inch absolutes Tho ratio of speoifis heats is determsinsd for gaseous propane fran Che vsleoity...

Cretsinger, James Hubert

2012-06-07T23:59:59.000Z

431

Probing the symmetry energy with isospin ratio from nucleons to fragments  

E-Print Network [OSTI]

Within the framework of ImQMD05, we study several isospin sensitive observables, such as DR(n/p) ratios, isospin transport ratio (isospin diffusion), yield ratios for LCPs between the projectile region and mid-rapidity region for the reaction systems Ni+Ni, Zn+Zn, Sn+Sn at low-intermediate energies. Our results show that those observables are sensitive to the density dependence of symmetry energy, and also depend on the cluster formation mechanism. By comparing these calculations to the data, the information of the symmetry energy and reaction mechanism is obtained.

Zhang, Yingxun; Zhou, Chengshuang; Chen, Jixian; Colonna, M; Danielewicz, P; Tsang, M B

2012-01-01T23:59:59.000Z

432

Probing the symmetry energy with isospin ratio from nucleons to fragments  

E-Print Network [OSTI]

Within the framework of ImQMD05, we study several isospin sensitive observables, such as DR(n/p) ratios, isospin transport ratio (isospin diffusion), yield ratios for LCPs between the projectile region and mid-rapidity region for the reaction systems Ni+Ni, Zn+Zn, Sn+Sn at low-intermediate energies. Our results show that those observables are sensitive to the density dependence of symmetry energy, and also depend on the cluster formation mechanism. By comparing these calculations to the data, the information of the symmetry energy and reaction mechanism is obtained.

Yingxun Zhang; Zhuxia Li; Chengshuang Zhou; Jixian Chen; M. Colonna; P. Danielewicz; M. B. Tsang

2012-08-31T23:59:59.000Z

433

Modeling multipolar gravitational-wave emission from small mass-ratio mergers  

E-Print Network [OSTI]

Using the effective-one-body (EOB) formalism and a time-domain Teukolsky code, we generate inspiral, merger, and ringdown waveforms in the small-mass-ratio limit. We use EOB inspiral and plunge trajectories to build the ...

Barausse, Enrico

434

Determination of boron isotope ratios by Zeeman effect background correction-graphite furnace atomic absorption spectrometry  

Science Journals Connector (OSTI)

A new method for the determination of isotopic ratio of boron using Zeeman effect background correction-graphite furnace atomic absorption spectrometry with conventional atomizer and natural-boron hollow cathode source is described. The isotope-shift Zeeman effect at 208.9 nm is utilized for isotopic ratio determination. At a given concentration of total boron, the net absorbance decreases linearly with increasing 10B/11B ratio. The absorbances are recorded at the field strength of 1.0 T. The isotope ratios measured by the proposed method were in good agreement with the results obtained by inductively coupled plasma-quadruple mass spectrometry or thermal ionization mass spectrometry. The present method is fairly fast and less expensive compared to the above techniques and is quite suitable for plant environments.

S. Thangavel; S.V. Rao; K. Dash; J. Arunachalam

2006-01-01T23:59:59.000Z

435

Determination of boron isotope ratios in geological materials by inductively coupled plasma mass spectrometry  

Science Journals Connector (OSTI)

Determination of boron isotope ratios in geological materials by inductively coupled plasma mass spectrometry ... Isotope dilution analysis using flow injection inductively coupled plasma mass spectrometry was applied to determine low boron contents in iron and steel samples. ...

D. Conrad Gregoire

1987-10-01T23:59:59.000Z

436

Non-Oberbeck-Boussinesq effects and barodiffusion in binary mixtures with small thermodiffusion ratio  

Science Journals Connector (OSTI)

For a binary-fluid layer heated from below, we evaluate the effects of the temperature and concentration dependence of the thermodiffusion ratio kT as well as the influence of barodiffusion on the conductive state and its stability.

S. J. Linz and M. Lücke

1987-10-01T23:59:59.000Z

437

Shear viscosity to relaxation time ratio in SU(3) lattice gauge theory  

E-Print Network [OSTI]

We evaluate the ratio of the shear viscosity to the relaxation time of the shear flux above but near the critical temperature $T_c$ in SU(3) gauge theory on the lattice. The ratio is related to Kubo's canonical correlation of the energy-momentum tensor in Euclidean space with the relaxation time approximation and an appropriate regularization. Using this relation, the ratio is evaluated by direct measurements of the Euclidean observables on the lattice. We obtained the ratio with reasonable statistics for the range of temperature $1.3T_c \\lesssim T \\lesssim 4T_c$. We also found that the characteristic speed of the transverse plane wave in gluon media is almost constant, $v \\simeq 0.5$, for $T \\gtrsim 1.5T_c$, which is compatible with the causality in the second order dissipative hydrodynamics.

Yasuhiro Kohno; Masayuki Asakawa; Masakiyo Kitazawa

2011-12-07T23:59:59.000Z

438

Stability of highly shifted equilibria in a large-aspect-ratio tokamak  

E-Print Network [OSTI]

in a large aspect ratio tokamak P. -A. Gourdain, S. C.High beta poloidal tokamaks can confine plasma pressures ansymmetric configuration called tokamak, where a plasma (i.e.

Gourdain, P A

2006-01-01T23:59:59.000Z

439

The analysis and interpretation of water-oil-ratio performance in petroleum reservoirs.  

E-Print Network [OSTI]

??Our goal in this work is to develop and validate a multivariate relation for the behavior of the water-oil-ratio (WOR) and/or water cut (f[]) functions,… (more)

Bondar, Valentina

2012-01-01T23:59:59.000Z

440

The enrichment ratio of atomic contacts in crystals, an indicator derived from the Hirshfeld surface analysis  

Science Journals Connector (OSTI)

An enrichment ratio is derived from the decomposition of the crystal contact surface between pairs of interacting chemical species. The propensity of different contact types to form is investigated.

Jelsch, C.

2014-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Stiffness-Mass Ratios Method for a baseline determination and damage assessment of a benchmark structure  

E-Print Network [OSTI]

Superior de Ingenieria y Arquitectura Chair of Advisory Committee: Dr. Luciana Barroso A new method based on ratios between stiffness and mass values from the eigenvalue problem is introduced and applied to the benchmark suucture to obtain baseline modal...

Rocha, Ramses Rodriguez

2002-01-01T23:59:59.000Z

442

E-Print Network 3.0 - aspect-ratio polymer microstructures Sample...  

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

of poly... and with aspect ratios as high as 8:1 (for 50-nm lines).41,45 Step-and-flash lithography is self... replicate nanostructures as small as 10 nm and aspect ......

443

Assessment of uranium exposure from total activity and 234U:238U activity ratios in urine  

Science Journals Connector (OSTI)

......Excretion Patterns of Naturally Occuring 234U, 238U and Calcium...ratios in urine. | Radiation workers at Atomic Weapons...Dose-Response Relationship, Radiation Humans Isotopes analysis...prevention & control Radiation Monitoring methods Radiation......

T. Nicholas; D. Bingham

2011-03-01T23:59:59.000Z

444

Dynamic Cost-Loss Ratio Decision-making Model with an Autocorrelated Climate Variable  

Science Journals Connector (OSTI)

A dynamic decision-making problem is considered involving the use of information about the autocorrelation of a climate variable. Specifically, an infinite horizon, discounted version of the dynamic cost-loss ratio model is treated, in which only ...

Richard W. Katz

1993-01-01T23:59:59.000Z

445

Signal-to-noise ratio: Computed Dental Radiography versus Sens-A-Ray  

Science Journals Connector (OSTI)

The signal-to-noise ratio (SNR) describes the ability of a detector to differentiate a signal from random fluctuations in signal intensity or noise in an image. The dose-response curves and the SNRs were measu...

Yoshihiko Hayakawa Ph.D.; Allan G. Farman BDS; Ph.D.Sc.…

1995-12-01T23:59:59.000Z

446

E-Print Network 3.0 - atomic mass ratios Sample Search Results  

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

23 PHYSICAL AND ELECTRICAL PROPERTIES OF In2O3 : Sn FILMS. APPLICATIONS TO OPTOELECTRONIC DEVICES Summary: is reported on the figure 1 as function of the atomic ratio SnIn in...

447

Embedding Google Maps APIs into WebRatio for the Automatic Generation of Web GIS Applications  

Science Journals Connector (OSTI)

The success of WebML (Web Modeling Language) and of the supporting tool WebRatio for designing and generating data-intensive web applications suggested us to extend the approach to the Web GIS context. The propos...

Giuseppe Avagliano; Sergio Di Martino…

2008-01-01T23:59:59.000Z

448

E-Print Network 3.0 - axial ratio Sample Search Results  

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

Engineering 2 CASING EFFECTS ON THE RADIATION PERFORMANCE OF A CIRCULARLY POLARIZED PATCH ANTENNA Summary: -7803-8302-80420.00 2004 IEEE 12;Fig.1b Axial ratio and gain...

449

E-Print Network 3.0 - anti-hcv signal-to-cutoff ratio Sample...  

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

noise ratio; ALT... 13 and P. Nakane's method 14, respectively. Cut-off values in RIA and ELISA were 2.1 (SN ... Source: Hammock, Bruce D. - Department of Entomology,...

450

E-Print Network 3.0 - aspect ratio micro-electro-magnetic-mechanical...  

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

micro-electro-magnetic-mechanical Search Powered by Explorit Topic List Advanced Search Sample search results for: aspect ratio micro-electro-magnetic-mechanical Page: << < 1 2 3 4...

451

A stochastic derivation of the ratio form of contest success functions  

Science Journals Connector (OSTI)

This note provides a distribution-based justification for the ratio form of contest success functions (CSFs), in which a player’s success depends positively on her effort relative to that of her opponents. I ...

Hao Jia

2008-06-01T23:59:59.000Z

452

E-Print Network 3.0 - aspect ratio ion Sample Search Results  

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

ion temperature ranges... from 2.6 to 9.3. The percent of reflected ions increases with sonic Mach number and the ratio... energy, is a crucial and not totally understood aspect of...

453

Two-Stage Variable Compression Ratio (VCR) System to Increase Efficiency in Gasoline Powertrains  

Broader source: Energy.gov [DOE]

Presents two-stage variable compression ratio mechanism realized by varying the connecting rod length, description of the system layout, working principle and expected fuel savings benefits when used in current and future gasoline engine concepts

454

Measurements on ferroelectric liquid-crystal spatial light modulators: contrast ratio and speed  

Science Journals Connector (OSTI)

The contrast ratio and the speed of a 16 × 16 electrically addressed spatial light modulator, composed of a ferroelectric liquid-crystal layer on top of a VLSI silicon backplane, are...

Collings, N; Gourlay, J; Vass, D G; White, H J; Stace, C; Proudley, G M

1995-01-01T23:59:59.000Z

455

The effect of stratum thickness ratio on crossflow in a stratified petroleum reservoir  

E-Print Network [OSTI]

THE EFFECT OF STRATUM THICKNESS RATIO ON CROSSFLOW IN A STRATIFIED PETROLEUM RESERVOIR A Thesis By Michael J. Kereluk Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 4966 Major Subject: Petroleum Engineering THE EFFECT OF STRATUM THICKNESS RATIO ON CROSSFLOW IN A STRATIFIED PETROLEUM RESERVOIR A Thesis By Michael I. Kereluk Approved as to style and content by: Chazrma of Com 'ttee...

Kereluk, Michael Joseph

2012-06-07T23:59:59.000Z

456

Fabrication and characterization of large arrays of mesoscopic gold rings on large-aspect-ratio cantilevers  

E-Print Network [OSTI]

-ratio cantilevers D. Q. Ngo, I. Petkovi, A. Lollo, M. A. Castellanos-Beltran, and J. G. E. Harris Citation: Review-aspect-ratio cantilevers D. Q. Ngo,1 I. Petkovi´c,1,a) A. Lollo,1 M. A. Castellanos-Beltran,2 and J. G. E. Harris1,3 1 in nonlinear mesoscopic rings J. Appl. Phys. 109, 07E139 (2011); 10.1063/1.3562257 High sensitivity cantilevers

Harris, Jack

457

Flow characteristics of finite aspect ratio fences in turbulent shear flows  

E-Print Network [OSTI]

FLOW CHARACTERISTICS OF FINITE ASPECT RATIO FENCES IN TURBULENT SHEAR FLOWS A THESIS by JOSEPH RODNEY MATTE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1977 Major. Subject: Aerospace Engineering FLOW CHARACTERISTICS OF FINITE ASPECT RATIO FENCES IN TURBULENT SHEAR FLOWS A Thesis by JOSEPH RODNEY MATTE Approved as to style and content by: (Chairman of Committee) (Head...

Matte, Joseph Rodney

2012-06-07T23:59:59.000Z

458

The relation of octane number, compression ratio, and exhaust temperature in the gasoline engine  

E-Print Network [OSTI]

THE RELATION OF OCTANE NUMHER& COMPRESSION RATIO& AND EXHAUST TEMPERATURE IN THE GASOLINE ENGINE A Tbeaie Donald George Jentsch THE RELATION OF OCTANE NUMBER, COMHKSSION RATIO, EXHAUST TEMPERATURE IN THE GASOLINE ENGINE By Donald George... throttle settings) a. Table VI - Aviation Gasolines 22 26 b. Table VI (a) ? Automotive Gasolines . . . 33 2. Spark set for maximum power at full throttle (Speed 2000 RPH at various throttle settings) a. Table VII ? Aviation Gasolines . . . . . 34 b...

Jentsch, Donald George

2012-06-07T23:59:59.000Z

459

A comparison of the values of Poisson's ratio of rocks measured statically and dynamically  

E-Print Network [OSTI]

T s 15 Where: V s T s POISSON'S RATIO Velocity of shear wave - Ft/Sec. Travel time - microseconds (Sonic Method) , H YOUNG'S NODULUS (Triaxiai Method) b, p Where. ' E YOUNG'S NODULUS Young's modulus - psi Incremental pressure change - psi...A COMPARISON OF THE VALUES OF POISSON'S RATIO OF ROCKS MEASURED STATICALLY AND DYNAMICALLY A Thesis by Benjamin F. M rek Submitted to I;he Graduate College of the Texas ASM University in partial fulfillment of the requirements for the degree...

Marek, Benjamin Frank

2012-06-07T23:59:59.000Z

460

Improving boron isotope ratio measurement precision with quadrupole inductively coupled plasma-mass spectrometry  

Science Journals Connector (OSTI)

A method was developed to improve the precision of inductively coupled plasma quadrupole mass spectrometry (ICP-QMS) for the determination of boron isotope ratios (11B/10B) in various environmental materials including seawater. This approach is based on the common analyte internal standardization (CAIS) chemometric algorithm. The sample solution obtained after digestion is spiked with lithium, and both 7Li/6Li and 11B/10B values are measured using long-counting periods (20 min). The CAIS algorithm corrects the measured 11B/10B values for (a) statistical fluctuations resulting from short-term noise; (b) drift in 11B-to-10B ratio as a result of long-term deviation in instrumental parameters likely to occur during long counting times; (c) change in 11B-to-10B ratio caused by variation in matrix elements concentrations; and (d) drift in mass bias correction factor. Comparing boron isotopic ratios in seawater measured by conventional and the new isotope ratio methods validates the procedure. A synthetic isotopic mixture of boron SRM 951 and enriched 10B SRM 952 also was examined. The CAIS method provided a measured boron isotopic ratio precision of 0.05% R.S.D. while eliminating 5.1% matrix concentration error and 0.25% instrumental drift error.

Assad Al-Ammar; Eva Reitznerová; Ramon M. Barnes

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" 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

Determining the slag fraction, water/binder ratio and degree of hydration in hardened cement pastes  

SciTech Connect (OSTI)

A method for determining the original mix composition of hardened slag-blended cement-based materials based on analysis of backscattered electron images combined with loss on ignition measurements is presented. The method does not require comparison to reference standards or prior knowledge of the composition of the binders used. Therefore, it is well-suited for application to real structures. The method is also able to calculate the degrees of reaction of slag and cement. Results obtained from an experimental study involving sixty samples with a wide range of water/binder (w/b) ratios (0.30 to 0.50), slag/binder ratios (0 to 0.6) and curing ages (3 days to 1 year) show that the method is very promising. The mean absolute errors for the estimated slag, water and cement contents (kg/m{sup 3}), w/b and s/b ratios were 9.1%, 1.5%, 2.5%, 4.7% and 8.7%, respectively. 91% of the estimated w/b ratios were within 0.036 of the actual values. -- Highlights: •A new method for estimating w/b ratio and slag content in cement pastes is proposed. •The method is also able to calculate the degrees of reaction of slag and cement. •Reference standards or prior knowledge of the binder composition are not required. •The method was tested on samples with varying w/b ratios and slag content.

Yio, M.H.N., E-mail: marcus.yio11@imperial.ac.uk; Phelan, J.C.; Wong, H.S.; Buenfeld, N.R.

2014-02-15T23:59:59.000Z

462

U.S. Wind Manufacturing: Taller Hub Heights to Access Higher...  

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

U.S. Wind Manufacturing: Taller Hub Heights to Access Higher Wind Resources and Lower Cost of Energy U.S. Wind Manufacturing: Taller Hub Heights to Access Higher Wind Resources and...

463

Feature selection by higher criticism thresholding achieves the optimal phase diagram  

Science Journals Connector (OSTI)

...higher criticism test statistic is . HC seems insensitive...figure-1 b shows a probability-probability (PP...2005 Higher criticism statistic: detecting and identifying...mathematical sciences I: Probability and statistics, Platinum Jubilee...

2009-01-01T23:59:59.000Z

464

A Broader Church? Expansion, Access and Cost-Sharing in Portuguese Higher Education  

Science Journals Connector (OSTI)

The literature on higher education used to postulate that we should expect a much more diversified student population once a system of higher education grows in size, and particularly when it moves from an eli...

Pedro Teixeira; Maria João Rosa…

2006-01-01T23:59:59.000Z

465

Why don’t Jordanian Women Graduate? A theoretical look at gendered experiences in Higher Education in Jordan  

E-Print Network [OSTI]

in Higher Education in Jordan Carine Allaf Thinking Gender,look at gendered experiences in Higher Education in Jordanin Higher Education in Jordan Carine Allaf Thinking Gender,

Allaf, Carine

2008-01-01T23:59:59.000Z

466

The Economic Return on Investment in South Carolina's Higher Education Page i Division of Research  

E-Print Network [OSTI]

The Economic Return on Investment in South Carolina's Higher Education Page i Division of Research August 2009 The Economic Return on Investment in South Carolina's Higher Education #12;The Economic Return of Investment in South Carolina's Higher Education Page i The Economic

Almor, Amit

467

The Strategy for Learning Outcomes at Higher Education Institutions in Sweden ISSN 1340-8550  

E-Print Network [OSTI]

20 23 9 The Strategy for Learning Outcomes at Higher Education Institutions in Sweden ISSN 1340-8550 #12; [] The Strategy for Learning Outcomes at Higher Education Institutions in Sweden Institutions in Sweden #12;The Strategy for Learning Outcomes at Higher Education Institutions in Sweden

Banbara, Mutsunori

468

GLOBAL KIOSK OF HIGHER EDUCATION & SCHOLARSHIP: Emerging Mega Alliance of High  

E-Print Network [OSTI]

REN as the centerpiece of their information and communication technology (ICT) plan for higherGLOBAL KIOSK OF HIGHER EDUCATION & SCHOLARSHIP: Emerging Mega Alliance of High Performance Research and Education Networks (REN) GLOBAL KIOSK OF HIGHER EDUCATION & SCHOLARSHIP: Emerging Mega Alliance of High

Khan, Javed I.

469

Relativistic density functional theory modeling of plutonium and americium higher oxide molecules  

E-Print Network [OSTI]

Relativistic density functional theory modeling of plutonium and americium higher oxide molecules of plutonium and americium higher oxide molecules Andréi Zaitsevskii,1,2,a) Nikolai S. Mosyagin,2,3 Anatoly V of plutonium and americium higher oxide molecules (actinide oxidation states VI through VIII) by two

Titov, Anatoly

470

Chlorine/bromine ratios in fracture-filling aqueous alteration products in Nakhla olivine  

SciTech Connect (OSTI)

The Cl/Br ratios in fracture-filling materials in veins in Nakhla olivine was determined using x-ray microprobe (Br) and EDX (Cl) techniques. The Cl/Br ratio of 55 +/- 13 shows that the secondary altered material is pristine, extraterrestrial and akin to the Martian soil. During the early Martian history, volcanic emanations contributed large excesses of volatiles including halogens, sulfur and water to the Martian crust. These chemically-reactive elements had undergone extensive redistribution over time due to a variety of surface processes on Mars. To understand the nature of the alterations due to aqueous activity in the Martian surface environment, a study of halogens, in particular Cl/Br ratios in secondary mineralization products may provide valuable insights. Dreibus and Waenke arrived at a Cl/Br ratio of {approx}110 for the Martian surface materials by studying glasses and bulk samples of several SNC meteorites using neutron activation. Nakhla probably offers the most diverse suite of aqueous precipitates to be found among the SNC meteorites. Numerous veins of hydrous clay within olivine grains are present in Nakhla. Bridges and Grady and Wentworth and McKay observed massive concentrations of halite of probable Martian evaporitic origin, in association with siderite and anhydrite in interstitial areas in Nakhla. Dreibus et al. reported Cl/Br ratios in 3 Nakhla fragments from 104 to 550 and found that 90% of the Cl and Br was readily leachable from this material. Their Nakhla leachate ratio was 580. Their analysis of an attached salt grain yielded a ratio of 5440, similar to that in table salt. Xirouchakis et al. found 20 ppm Br in glass veins in Los Angeles shergottite based on XRF measurements with the x-ray microprobe (beamline X26A) at the Brookhaven Nat. Lab. We examine in this study whether a Cl/Br ratio similar to that of Dreibus and Waenke is also present in products of secondary mineralization, generated as a result of aqueous alteration in some SNC meteorites. We have studied the Cl/Br ratios in fracture-filling materials in veins in Nakhla olivines (thin sections) by determining Br contents using the X-ray Microprobe facility at GeoSoilEnviroCARS (Advanced Photon Source/University of Chicago) and by determining Cl using SEM-based EDX measurements at the same sites in the veins.

Sutton, S.R.; Rao, M.N.; Dreibus, G.; McKay, D.S.; Wanke, H.; Wentworth, S.; Newville, M.; Trainor, T.; Flynn, G.J. (Max-Plank Inst); (SUNY Plattsburgh); (UofC); (Lockheed Martin); (NASA)

2005-04-22T23:59:59.000Z

471

Theoretical study on a novel ammonia–water cogeneration system with adjustable cooling to power ratios  

Science Journals Connector (OSTI)

Abstract A novel ammonia–water cogeneration system with adjustable cooling to power ratios is proposed and investigated. In the combined system, a modified Kalina subcycle and an ammonia absorption cooling subcycle are interconnected by mixers, splitters, absorbers and heat exchangers. The proposed system can adjust its cooling to power ratios from the separate mode without splitting/mixing processes in the two subcycles to the combined operation modes which can produce different ratios of cooling and power. Simulation analysis is conducted to investigate the effects of operation parameter on system performance. The results indicate that the combined system efficiency can reach the maximum values of 37.79% as SR1 (split ratio 1) is equal to 1. Compared with the separate system, the combined efficiency and COP values of the proposed system can increase by 6.6% and 100% with the same heat input, respectively. In addition, the cooling to power ratios of the proposed system can be adjusted in the range of 1.8–3.6 under the given operating conditions.

Zeting Yu; Jitian Han; Hai Liu; Hongxia Zhao

2014-01-01T23:59:59.000Z

472

Effects of recycle ratios on process dynamics and operability of a whey ultrafiltration stage  

Science Journals Connector (OSTI)

There is limited information available to describe how the recycle ratios of the retentate and permeate streams can be used to counteract the effects of fluctuations in feed flowrate and composition on the flowrate and composition of the retentate stream from a whey ultrafiltration (UF) process. Based on dynamic modelling of a single membrane channel and a single-stage membrane module, it was found that the high retentate recycle ratio typically used in industrial UF of whey imposes slow dynamic responses and extensive oscillations on the flowrate and concentration of the retentate after a feedback controller is implemented. Even though the permeate recycle ratio can be used to control the specifications of the retentate, the high retentate recycle ratio used in typical whey UF processing places a limit on how fast the effects of fluctuations in feed flowrate and composition can be mitigated. Since a high retentate recycle ratio is required to improve the productivity of the whey UF process, a tradeoff must be obtained between the productivity and the time required to mitigate the effects of fluctuations in feed flowrate and composition.

Kevin W.K. Yee; Alessio Alexiadis; Jie Bao; Dianne E. Wiley

2009-01-01T23:59:59.000Z

473

Calcite growth rates as a function of aqueous calcium-to-carbonate ratio, saturation index and strontium concentration  

SciTech Connect (OSTI)

Using in situ atomic force microscopy, the growth rates of the obtuse and acute step orientations on the calcite surface were measured at two saturation indices as a function of the aqueous calcium-to-carbonate ratio and aqueous strontium concentration. The amount of strontium required to inhibit growth was found to correlate with the aqueous calcium concentration, but did not correlate with carbonate. This suggests that strontium inhibits attachment of calcium ions to the reactive sites on the calcite surface. Strontium/calcium cation exchange selectivity coefficients for those sites, Kex, of 1.09 0.09 and 1.44 0.19 are estimated for the obtuse and acute step orientations, respectively. The implication of this finding is that to avoid poisoning calcite growth, the concentration of calcium should be higher than the quotient of the strontium concentration and Kex, regardless of saturation state. Additionally, analytical models of nucleation and propagation of steps are expanded from previous work to capture growth rates of these steps at multiple saturation indices and the effect of strontium. This work will have broader implications for naturally occurring or engineered calcite growth, such as to sequester subsurface strontium contamination.

Bracco, Jacquelyn N [ORNL; Grantham, Ms. Meg [Georgia Institute of Technology; Stack, Andrew G [ORNL

2012-01-01T23:59:59.000Z

474

The Distribution Coefficients and Gasification Ratios of [1,2-{sup 14}C] Sodium Acetate for Various Paddy Soils in Japan  

SciTech Connect (OSTI)

For appropriate safety assessment of the disposal of TRU waste, distribution coefficients (K{sub d}) and gasification ratios of {sup 14}C labeled [1, 2-{sup 14}C] sodium acetate ({sup 14}C-NaOAc) were determined by batch sorption tests for 85 Japanese paddy soil samples. The soil studied were from four soil types: Andsol; Gley; Gray lowland; and Yellow. The range of K{sub d} values for all soil samples was from 7.5 to 295.2 mL g{sup -1}, and the mean value was 105.6 mL g{sup -1}. This mean value was higher than that of previous study (1). The high K{sub d} values of the present study could be a result of the properties of the paddy soils. The comparison of K{sub d} values by each soil type revealed statistically significant difference between Andsol and Gray lowland soils (P < 0.05). The soil type was one of the factors affecting partitioning of {sup 14}C-NaOAc. Gasification ratios ranged from 29.1% to 83.3%, and its mean value was 66.4% of the total {sup 14}C-NaOAc added. These results suggest that most of the radiocarbon in {sup 14}C-NaOAc will be released from soil into the air as gases. The gasification ratio between soil types was also compared, but no statistically significant difference was found. Gas production may be controlled by other than physicochemical properties of soil, for example by factors such as bacterial community. In addition, both the K{sub d} values and the gasification ratios for Gley soil were decreased according to the increase in pH although the underlaying mechanisms for this observation are not clear. (authors)

Ishii, N.; Takeda, H.; Uchida, S. [Office of Biospheric Assessment for Waste Disposal, National Institute of Radiological Sciences, Inage-ku, Chiba-shi (Japan)

2008-07-01T23:59:59.000Z

475

Argonne CNM Highlight: High density, high-aspect-ratio precision polyimide  

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

High density, high-aspect-ratio precision polyimide nanofilters High density, high-aspect-ratio precision polyimide nanofilters Polyimide Nanofilter SEM of a polyimide film with holes ~250 nm in diameter and ~10 µm deep. The cross-sectional cut of the channels in the front are made visible by focused ion-beam milling. Collaborative users from Creatv MicroTech, Inc. and Los Alamos National Laboratory, working with CNM's Nanofabrication & Devices Group, have demonstrated a novel fabrication process that produces high-porosity polymer nanofilters with smooth, uniform. and straight pores and high aspect ratios. Nanofilters have a wide range of applications for various size-exclusion-based separations in bioseparation and nanomedicine, such as laboratory assays, removing bacteria and viruses, drug delivery devices,

476

36Cl/Cl ratios in geothermal systems- preliminary measurements from the  

Open Energy Info (EERE)

Cl/Cl ratios in geothermal systems- preliminary measurements from the Cl/Cl ratios in geothermal systems- preliminary measurements from the Coso Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: 36Cl/Cl ratios in geothermal systems- preliminary measurements from the Coso Field Details Activities (1) Areas (1) Regions (0) Abstract: The {sub 36}Cl/Cl isotopic composition of chlorine in geothermal systems can be a useful diagnostic tool in characterizing hydrologic structure, in determining the origins and age of waters within the systems, and in differentiating the sources of chlorine (and other solutes) in the thermal waters. The {sub 36}Cl/Cl values for several geothermal water samples and reservoir host rock samples from the Coso, California geothermal field have been measured for these purposes. The results

477

Nano-scaled graphene platelets with a high length-to-width aspect ratio  

DOE Patents [OSTI]

This invention provides a nano-scaled graphene platelet (NGP) having a thickness no greater than 100 nm and a length-to-width ratio no less than 3 (preferably greater than 10). The NGP with a high length-to-width ratio can be prepared by using a method comprising (a) intercalating a carbon fiber or graphite fiber with an intercalate to form an intercalated fiber; (b) exfoliating the intercalated fiber to obtain an exfoliated fiber comprising graphene sheets or flakes; and (c) separating the graphene sheets or flakes to obtain nano-scaled graphene platelets. The invention also provides a nanocomposite material comprising an NGP with a high length-to-width ratio. Such a nanocomposite can become electrically conductive with a small weight fraction of NGPs. Conductive composites are particularly useful for shielding of sensitive electronic equipment against electromagnetic interference (EMI) or radio frequency interference (RFI), and for electrostatic charge dissipation.

Zhamu, Aruna (Centerville, OH); Guo, Jiusheng (Centerville, OH); Jang, Bor Z. (Centerville, OH)

2010-09-07T23:59:59.000Z

478

The effects of R/X ratios on power system minimum loss  

E-Print Network [OSTI]

Impedanoe 20+$40 20+ 40 R/X ratio 1/2 1 2 X17 Angle (degrees -5 -7. 5 -10. 0 -12. 5 -15. 0 10 I R 2, 03 2 ' 44 3e04 3. 68 4. 60 5+76 2. 45 3. 77 5. 68 TOTAL 4, 06 4. 88 6. 08 7. 36 9 ~ 20 lla52 4 ' 90 7+54 11, 36 I Z 4 ' 53..., itions: (1) The line impedanoes and R/X ratios are, Line 134 Im edanoe 0 100 5 10 R ratio 1 2 1 2 X17 Angle (degrees) 2 ~ 5 o95 i+90 TOTAL IR IX ~ 87 i 1. 74 I Z 1 ~ 95 2. 12 P 0' OS I R I X I Z 100. 0 108 ' 8 -5 ' 0 i+13 2+26 2...

Denison, John Scott

2012-06-07T23:59:59.000Z

479

Uses of chloride/bromide ratios in studies of potable water  

SciTech Connect (OSTI)

In natural ground water systems, both chlorine and bromine occur primarily as monovalent anions, chloride and bromide. Although dissolution or precipitation of halite, biological activity in the root zone, anion sorption, and exchange can affect chloride/bromide ratios in some settings, movement of the ions in potable ground water is most often conservative. Atmospheric precipitation will generally have mass ratios between 50 and 150; shallow ground water, between 100 and 200; domestic sewage, between 300 and 600; water affected by dissolution of halite, between 1,000 and 10,000; and summer runoff from urban streets, between 10 and 100. These, and other distinctive elemental ratios, are useful in the reconstruction of the origin and movement of ground water, as illustrated by case studies investigating sources of salinity in ground water from Alberta, Kansas, and Arizona, and infiltration rates and pathways at Yucca Mountain, Nevada.

Davis, S.N. [Univ. of Arizona, Tucson, AZ (United States). Dept. of Hydrology and Water Resources; Whittemore, D.O. [Univ. of Kansas, Lawrence, KS (United States). Kansas Geological Survey; Fabryka-Martin, J. [Los Alamos National Lab., NM (United States)

1998-03-01T23:59:59.000Z

480

Bayesian Integration of Isotope Ratios for Geographic Sourcing of Castor Beans  

SciTech Connect (OSTI)

Recent years have seen an increase in the forensic interest associated with the poison ricin, which is extracted from the seeds of the Ricinus communis plant. Both light element (C, N, O, and H) and strontium (Sr) isotope ratios have previously been used to associate organic material with geographic regions of origin. We present a Bayesian integration methodology that can more accurately predict the region of origin for a castor bean than individual models developed independently for light element stable isotopes or Sr isotope ratios. Our results demonstrate a clear improvement in the ability to correctly classify regions based on the integrated model with a class accuracy of 6 0 . 9 {+-} 2 . 1 % versus 5 5 . 9 {+-} 2 . 1 % and 4 0 . 2 {+-} 1 . 8 % for the light element and strontium (Sr) isotope ratios, respectively. In addition, we show graphically the strengths and weaknesses of each dataset in respect to class prediction and how the integration of these datasets strengthens the overall model.

Webb-Robertson, Bobbie-Jo M.; Kreuzer, Helen W.; Hart, Garret L.; Ehleringer, James; West, Jason B.; Gill, Gary A.; Duckworth, Douglas C.

2012-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "higher stripping ratios" from the National Library of EnergyBeta (NLEBeta).
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481

The influence of cluster emission and the symmetry energy on neutron-proton spectral double ratios  

E-Print Network [OSTI]

Emissions of free neutrons and protons from the central collisions of 124Sn+124Sn and 112Sn+112Sn reactions are simulated using the Improved Quantum Molecular Dynamics model with two different density dependence of the symmetry energy in the nuclear equation of state. The constructed double ratios of the neutron to proton ratios of the two reaction systems are found to be sensitive to the symmetry terms in the EOS. The effect of cluster formation is examined and found to affect the double ratios mainly in the low energy region. In order to extract better information on symmetry energy with transport models, it is therefore important to have accurate data in the high energy region which also is affected minimally by sequential decays.

Y. X. Zhang; P. Danielewicz; M. Famiano; Z. Li; W. G. Lynch; M. B. Tsang

2007-08-27T23:59:59.000Z

482

Measurement of the ratio of hydrogen to deuterium at the KSTAR 2009 experimental campaign  

SciTech Connect (OSTI)

The control of the ratio of hydrogen to the deuterium is one of the very important issues for ion cyclotron range of frequency (ICRF) minority heating as well as the plasma wall interaction in the tokamak. The ratio of hydrogen to deuterium during the tokamak shot was deduced from the emission spectroscopy measurements during the KSTAR 2009 experimental campaign. Graphite tiles were used for the plasma facing components (PFCs) at KSTAR and its surface area exposed to the plasma was about 11 m{sup 2}. The data showed that it remained as high as around 50% during the campaign period because graphite tiles were exposed to the air for about two months and the hydrogen contents at the tiles are not fully pumped out due to the lack of baking on the PFC in the 2009 campaign. The validation of the spectroscopy method was checked by using the Zeeman effects and the ratio of hydrogen to the deuterium is compared with results from the residual gas analysis. During the tokamak shot, the ratio is low below 10% initially and saturated after around 1 s. When there is a hydrogen injection to the vessel via ion cyclotron wall conditioning and the boronization process where the carbone is used, the ratio of the hydrogen to the deuterium is increased by up to 100% and it recovers to around 50% after one day of operation. However it does not decrease below 50% at the end of the experimental campaign. It was found that the full baking on the PFC (with a high temperature and sufficient vacuum pumping) is required for the ratio control which guarantees the efficient ICRF heating at the KSTAR 2010 experimental campaign.

Kwak, Jong-Gu; Wang, Son Jong; Kim, Sun Ho [Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong, Daejeon, South Korea, 305-353 (Korea, Republic of); Park, Jae Min; Na, Hoon Kyun [National Fusion Research Institute, Yuseong, Daejeon, South Korea, 305-333 (Korea, Republic of)

2010-10-15T23:59:59.000Z

483

"Table A15. Selected Energy Operating Ratios for Total Energy Consumption for"  

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

Selected Energy Operating Ratios for Total Energy Consumption for" Selected Energy Operating Ratios for Total Energy Consumption for" " Heat, Power, and Electricity Generation by Census Region and Economic" " Characteristics of the Establishment, 1991" ,,,"Consumption","Major" " "," ","Consumption","per Dollar","Byproducts(b)","Fuel Oil(c)"," " " ","Consumption","per Dollar","of Value","as a Percent","as a Percent","RSE" " ","per Employee","of Value Added","of Shipments","of Consumption","of Natural Gas","Row" "Economic Characteristics(a)","(million Btu)","(thousand Btu)","(thousand Btu)","(percent)","(percent)","Factors"

484

"Table A45. Selected Energy Operating Ratios for Total Energy Consumption"  

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

5. Selected Energy Operating Ratios for Total Energy Consumption" 5. Selected Energy Operating Ratios for Total Energy Consumption" " for Heat, Power, and Electricity Generation by Industry Group," " Selected Industries, and Value of Shipment Categories, 1994" ,,,,,"Major" ,,,"Consumption","Consumption per","Byproducts(c)","Fuel Oil(d)" ,,"Consumption","per Dollar","Dollar of Value","as a Percent","as a Percent","RSE" "SIC",,"per Employee","of Value Added","of Shipments","of Consumption","of Natural Gas","Row" "Code(a)","Economic Characteristics(b)","(million Btu)","(thousand Btu)","(thousand Btu)","(percents)","(percents)","Factors"

485

"Table A46. Selected Energy Operating Ratios for Total Energy Consumption"  

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

Selected Energy Operating Ratios for Total Energy Consumption" Selected Energy Operating Ratios for Total Energy Consumption" " for Heat, Power, and Electricity Generation by Industry Group," " Selected Industries, and Employment Size Categories, 1994" ,,,,,"Major" ,,,"Consumption","Consumption per","Byproducts(c)","Fuel Oil(d)" ,,"Consumption","per Dollar","Dollar of Value","as a Percent","as a Percent","RSE" "SIC",,"per Employee","of Value Added","of Shipments","of Consumption","of Natural Gas","Row" "Code(a)","Economic Characteristics(b)","(million Btu)","(thousand Btu)","(thousand Btu)","(percents)","(percents)","Factors"

486

"Table A48. Selected Energy Operating Ratios for Total Energy Consumption for"  

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

8. Selected Energy Operating Ratios for Total Energy Consumption for" 8. Selected Energy Operating Ratios for Total Energy Consumption for" " Heat, Power, and Electricity Generation by Census Region, Census Division, and Economic" " Characteristics of the Establishment, 1994" ,,,"Consumption","Major" " "," ","Consumption","per Dollar","Byproducts(b)","Fuel Oil(c)"," " " ","Consumption","per Dollar","of Value","as a Percent","as a Percent","RSE" " ","per Employee","of Value Added","of Shipments","of Consumption","of Natural Gas","Row"

487

"Table A8. Selected Energy Operating Ratios for Total Energy Consumption for"  

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

A8. Selected Energy Operating Ratios for Total Energy Consumption for" A8. Selected Energy Operating Ratios for Total Energy Consumption for" " Heat, Power, and Electricity Generation by Census Region, Industry Group, and" " Selected Industries, 1991" ,,,,,"Major" ,,,,"Consumption","Byproducts(b)" ,,,"Consumption","per Dollar","as a","Fuel Oil(c) as" ,,"Consumption","per Dollar","of Value","Percent of","a Percent of","RSE" "SIC"," ","per Employee","of Value Added","of Shipments","Consumsption","Natural Gas","Row" "Code(a)","Industry Groups and Industry","(million Btu)","(thousand Btu)","(thousand Btu)","(PERCENT)","(percent)","Factors"

488

"Table A51. Selected Energy Operating Ratios for Total Energy Consumption for"  

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

1. Selected Energy Operating Ratios for Total Energy Consumption for" 1. Selected Energy Operating Ratios for Total Energy Consumption for" " Heat, Power, and Electricity Generation by Census Region and Economic" " Characteristics of the Establishment, 1991 " ,,,,,"Major" ,,,"Consumption","Consumption per","Byproducts(c)","Fuel Oil(d)" ,,"Consumption","per Dollar","Dollar of Value","as a Percent","as a Percent","RSE" "SIC",,"per Employee","of Value Added","of Shipments","of Consumption","of Natural Gas","Row" "Code(a)","Economic Characteristics(b)","(million Btu)","(thousand Btu)","(thousand Btu)","(percent)","(percent)","Factors"

489

"Table A47. Selected Energy Operating Ratios for Total Energy Consumption for"  

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

7. Selected Energy Operating Ratios for Total Energy Consumption for" 7. Selected Energy Operating Ratios for Total Energy Consumption for" " Heat, Power, and Electricity Generation by Census Region, Census Division, Industry Group, and" " Selected Industries, 1994" ,,,,,"Major" ,,,,"Consumption","Byproducts(b)" ,,,"Consumption","per Dollar","as a","Fuel Oil(c) as" ,,"Consumption","per Dollar","of Value","Percent of","a Percent of","RSE" "SIC"," ","per Employee","of Value Added","of Shipments","Consumption","Natural Gas","Row" "Code(a)","Industry Group and Industry","(million Btu)","(thousand Btu)","(thousand Btu)","(percents)","(percents)","Factors"

490

Scaling of the Longitudinal Electric Field and Transformer Ratio in a Nonlinear Plasma Wakefield Accelerator  

SciTech Connect (OSTI)

The scaling of the two important figures of merit, the transformer ratio T and the longitudinal electric field E{sub z}, with the peak drive-bunch current I{sub p}, in a nonlinear plasma wakefield accelerator is presented for the first time. The longitudinal field scales as I{sub P}{sup 0.623{+-}0.007}, in good agreement with nonlinear wakefield theory ({approx}I{sub P}{sup 0.5}), while the unloaded transformer ratio is shown to be greater than unity and scales weakly with the bunch current. The effect of bunch head erosion on both parameters is also discussed.

Blumenfeld, I.; /SLAC; Clayton, C.E.; /UCLA; Decker, F.J.; Hogan, M.J.; /SLAC; Huang, C.; /UCLA; Ischebeck, R.; Iverson, R.H.; /SLAC; Joshi, C.; /UCLA; Katsouleas, T.; /Southern California U.; Kirby, N.; /SLAC; Lu, W.; Marsh, K.A.; Mori, W.B.; /UCLA; Muggli, P.; Oz, E.; /Southern California U.; Siemann, R.H.; Walz, D.R.; /SLAC; Zhou, M.; /UCLA

2012-06-12T23:59:59.000Z

491

Measurement of the branching ratios for the decays of D(+)(s) to ??(+), ???(+), ??(+), and ???(+)  

E-Print Network [OSTI]

PHYSICAL REVIEW D, VOLUME 58, 052002Measurement of the branching ratios for the decays of Ds1 to hp1, h8p1, hr1, and h8r1 C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, S. F. Schaffner, D. Ugolini, R. Wang, and X. Zhou Stanford Linear Accelerator...-II detector at the Cornell Electron Storage Ring, we have measured the branching ratios for the decay modes Ds 1!(h ,h 8 )p1 and Ds1!(h ,h8)r1 relative to Ds1!fp1. These decay modes are among the most common hadronic decays of the Ds 1 , and can be related...

Baringer, Philip S.

1998-07-29T23:59:59.000Z

492

The effect of void ratio on critical tractive force of cohesive soils  

E-Print Network [OSTI]

THE EFFECT OF VOID RATIO ON CRITICAL TRACTIVE FORCE OF COHESIVE SOILS A Thesis By WILLIAM MADISON LYLE Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE January 1964 Major Subject: Agricultural Engineering THE EFFECT Of VOID RATIO ON CRITICAL TRACTIVE FORCE OF COHESIVE SOILS A Thesis By WILLIAM MADISON LYLE Approved as to style a d content by: (Com itt)te airman) / / (Head of D ment...

Lyle, William Madison

1964-01-01T23:59:59.000Z

493

An application of ratio and regression estimation to a forest land ownership project  

E-Print Network [OSTI]

AN APPLICATION OF RATIO AND REGRESSION ESTIMATION TO A FOREST LAND OWNERSHIP PROJECT A Thesis By DAVID LYNN MINALDI Submitted to the Graduate College of the Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 1967 Major Subject: Statistics AN APPLICATION OF RATIO AND REGRESSION ESTIMATION TO A FOREST LAND OWNERSHIP PROJECT A Thesis By DAVID I YNN MINALDI Approve as t~~ye and content by: ( (Chai(man f - mmittee) (Member) (Head...

Minaldi, David Lynn

1967-01-01T23:59:59.000Z

494

Mg isotope ratios in giant stars of the globular clusters M 13 and M 71  

E-Print Network [OSTI]

We present Mg isotope ratios in 4 red giants of the globular cluster M 13 and 1 red giant of the globular cluster M 71 based on spectra obtained with HDS on the Subaru Telescope. We confirm earlier results by Shetrone that for M 13, the ratio varies from (25+26)Mg/24Mg = 1 in stars with the highest Al abundance to (25+26)Mg/24Mg = 0.2 in stars with the lowest Al abundance. However, we separate the contributions of all three isotopes and find a spread in the ratio 24Mg:25Mg:26Mg with values ranging from 48:13:39 to 78:11:11. As in NGC 6752, we find a positive correlation between 26Mg and Al, an anticorrelation between 24Mg and Al, and no correlation between 25Mg and Al. In M 71, our one star has a ratio 70:13:17. For both clusters, the lowest ratios of 25Mg/24Mg and 26Mg/24Mg exceed those observed in field stars at the same metallicity, a result also found in NGC 6752. The contribution of 25Mg to the total Mg abundance is constant within a given cluster and between clusters with 25Mg/(24+25+26)Mg = 0.13. For M 13 and NGC 6752, the ranges of the Mg isotope ratios are similar and both clusters show the same correlations between Al and Mg isotopes suggesting that the same process is responsible for the abundance variations in these clusters. While existing models fail to reproduce all the observed abundances, we continue to favor the scenario in which two generations of AGB stars produce the observed abundances. A first generation of metal-poor AGB stars pollutes the entire cluster and is responsible for the large ratios of 25Mg/24Mg and 26Mg/24Mg observed in cluster stars with compositions identical to field stars at the same metallicity. Differing degrees of pollution by a second generation of AGB stars of the same metallicity as the cluster provides the star-to-star scatter in Mg isotope ratios.

David Yong; Wako Aoki; David L. Lambert

2005-10-19T23:59:59.000Z

495

Practical method and device for enhancing pulse contrast ratio for lasers and electron accelerators  

DOE Patents [OSTI]

An apparatus and method for enhancing pulse contrast ratios for drive lasers and electron accelerators. The invention comprises a mechanical dual-shutter system wherein the shutters are placed sequentially in series in a laser beam path. Each shutter of the dual shutter system has an individually operated trigger for opening and closing the shutter. As the triggers are operated individually, the delay between opening and closing first shutter and opening and closing the second shutter is variable providing for variable differential time windows and enhancement of pulse contrast ratio.

Zhang, Shukui; Wilson, Guy

2014-09-23T23:59:59.000Z

496

Control system and method for a power delivery system having a continuously variable ratio transmission  

DOE Patents [OSTI]

A control system and method for a power delivery system, such as in an automotive vehicle, having an engine coupled to a continuously variable ratio transmission (CVT). Totally independent control of engine and transmission enable the engine to precisely follow a desired operating characteristic, such as the ideal operating line for minimum fuel consumption. CVT ratio is controlled as a function of commanded power or torque and measured load, while engine fuel requirements (e.g., throttle position) are strictly a function of measured engine speed. Fuel requirements are therefore precisely adjusted in accordance with the ideal characteristic for any load placed on the engine.

Frank, Andrew A. (1034 Hillside Ave., Madison, WI 53705)

1984-01-01T23:59:59.000Z

497

"Table A50. Selected Energy Operating Ratios for Total Energy Consumption for"  

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

0. Selected Energy Operating Ratios for Total Energy Consumption for" 0. Selected Energy Operating Ratios for Total Energy Consumption for" " Heat, Power, and Electricity Generation by Industry Group," " Selected Industries, and Economic Characteristics of the" " Establishment, 1991 (Continued)" ,,,,,"Major" ,,,"Consumption","Consumption per","Byproducts(c)","Fuel Oil(d)" ,,"Consumption","per Dollar","Dollar of Value","as a Percent of","as a Percent","RSE" "SIC",,"per Employee","of Value Added","of Shipments","of Consumption","of Natural Gas","Row" "Code(a)","Economic Characteristics(b)","(million Btu)","(thousand Btu)","(thousand Btu)","(Percent)","(percent)","Factors"

498

Environmental levels of oestrogenic and antiandrogenic compounds feminize digit ratios in male rats and their unexposed male progeny  

Science Journals Connector (OSTI)

...compounds feminize digit ratios in male rats and their unexposed male progeny Jacques...studied the effect on adult male Wistar rat digit ratios of a gestational exposure to...dimorphism of