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1

Duality in N=2 minimal model holography  

E-Print Network [OSTI]

Recently a duality between a family of \\mathcal{N}=2 supersymmetric higher spin theories on AdS3, and the 't Hooft like limit of a class of Kazama-Suzuki models (that are parametrised by N and k) was proposed. The higher spin theories can be described by a Chern-Simons theory based on the infinite-dimensional Lie algebra shs[\\mu], and under the duality, \\mu is to be identified with \\lambda=N/(N+k+1). Here we elucidate the structure of the (quantum) asymptotic symmetry algebra sW_{\\infty}[\\mu] for arbitrary \\mu and central charge c. In particular, we show that for each value of the central charge, there are generically four different values of \\mu that describe the same sW_{\\infty} algebra. Among other things this proves that the quantum symmetries on both sides of the duality agree; this equivalence does not just hold in the 't Hooft limit, but even at finite N and k.

Candu, Constantin

2012-01-01T23:59:59.000Z

2

Duality in N=2 minimal model holography  

E-Print Network [OSTI]

Recently a duality between a family of \\mathcal{N}=2 supersymmetric higher spin theories on AdS3, and the 't Hooft like limit of a class of Kazama-Suzuki models (that are parametrised by N and k) was proposed. The higher spin theories can be described by a Chern-Simons theory based on the infinite-dimensional Lie algebra shs[\\mu], and under the duality, \\mu is to be identified with \\lambda=N/(N+k+1). Here we elucidate the structure of the (quantum) asymptotic symmetry algebra sW_{\\infty}[\\mu] for arbitrary \\mu and central charge c. In particular, we show that for each value of the central charge, there are generically four different values of \\mu that describe the same sW_{\\infty} algebra. Among other things this proves that the quantum symmetries on both sides of the duality agree; this equivalence does not just hold in the 't Hooft limit, but even at finite N and k.

Constantin Candu; Matthias R. Gaberdiel

2012-07-27T23:59:59.000Z

3

N=2 minimal conformal field theories and matrix bifactorisations of x^d  

E-Print Network [OSTI]

We prove a tensor equivalence between full subcategories of a) graded matrix factorisations of the potential x^d-y^d and b) representations of the N=2 minimal super vertex operator algebra at central charge 3-6/d, where d is odd. The subcategories are given by a) permutation-type matrix factorisations with consecutive index sets, and b) Neveu-Schwarz-type representations. The physical motivation for this result is the Landau-Ginzburg / conformal field theory correspondence, where it amounts to the equivalence of a subset of defects on both sides of the correspondence. Our work builds on results by Brunner and Roggenkamp [arXiv:0707.0922], where an isomorphism of fusion rules was established.

Davydov, Alexei; Runkel, Ingo

2014-01-01T23:59:59.000Z

4

N=2 minimal conformal field theories and matrix bifactorisations of x^d  

E-Print Network [OSTI]

We prove a tensor equivalence between full subcategories of a) graded matrix factorisations of the potential x^d-y^d and b) representations of the N=2 minimal super vertex operator algebra at central charge 3-6/d, where d is odd. The subcategories are given by a) permutation-type matrix factorisations with consecutive index sets, and b) Neveu-Schwarz-type representations. The physical motivation for this result is the Landau-Ginzburg / conformal field theory correspondence, where it amounts to the equivalence of a subset of defects on both sides of the correspondence. Our work builds on results by Brunner and Roggenkamp [arXiv:0707.0922], where an isomorphism of fusion rules was established.

Alexei Davydov; Ana Ros Camacho; Ingo Runkel

2014-09-07T23:59:59.000Z

5

Purge water management system  

DOE Patents [OSTI]

A purge water management system is described for effectively eliminating the production of purge water when obtaining a groundwater sample from a monitoring well. In its preferred embodiment, the purge water management system comprises an expandable container, a transportation system, and a return system. The purge water management system is connected to a wellhead sampling configuration, typically permanently installed at the well site. A pump, positioned with the monitoring well, pumps groundwater through the transportation system into the expandable container, which expands in direct proportion with volume of groundwater introduced, usually three or four well volumes, yet prevents the groundwater from coming into contact with the oxygen in the air. After this quantity of groundwater has been removed from the well, a sample is taken from a sampling port, after which the groundwater in the expandable container can be returned to the monitoring well through the return system. The purge water management system prevents the purge water from coming in contact with the outside environment, especially oxygen, which might cause the constituents of the groundwater to oxidize. Therefore, by introducing the purge water back into the monitoring well, the necessity of dealing with the purge water as a hazardous waste under the Resource Conservation and Recovery Act is eliminated.

Cardoso-Neto, J.E.; Williams, D.W.

1995-01-01T23:59:59.000Z

6

Phosphate purge dooms algae  

Science Journals Connector (OSTI)

Phosphate purge dooms algae ... Secretary Stewart L. Udall hails the development as one that could lead to a major, early break-through in water algae control. ... The algae, called algal blooms, have grown increasingly fat on phosphates passing unchecked into rivers and lakes from large-scale waste-treatment plants. ...

1966-08-08T23:59:59.000Z

7

Trends in Purge and Trap  

Science Journals Connector (OSTI)

......methods and hardware capable of handling the wide array of sample matrices...follows first- Figure 1. Flow diagrams: A, purge (extraction...become important reference material as the list of analytes performed...columns, and Figure 7. Flow diagram of the capillary split injection......

Scott M. Abeel; Allen K. Vickers; Daron Decker

1994-08-01T23:59:59.000Z

8

Purge needs in absorption chillers  

SciTech Connect (OSTI)

Absorption chillers are regaining a significant share of large tonnage chiller sales, such as they had 20 years ago. Gas-fired chillers are now available that have a base energy (ultimate fuel usage) consumption rate per ton comparable to that in electric units. Effective purging in an absorption chiller is an absolute necessity to achieve the low chilled water temperature needed for dehumidification and to fully benefit from the energy savings offered by double-effect cycles. Although the purge system is usually not shown on the typical cycle schematic, its proper functioning is a key requirement for satisfactory machine operation. This article discusses the effect of noncondensible (N/C) gases on the absorption cooling process and the basics of purge systems. In addition, the article discusses the rationale for the important design step of selecting the location of the N/C probe, and discusses purge systems applicable to the direct-fired, double-effect machines now entering the marketplace.

Murray, J.G. (Battelle, Columbus, OH (United States))

1993-10-01T23:59:59.000Z

9

Well purge and sample apparatus and method  

DOE Patents [OSTI]

The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well. The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion.

Schalla, Ronald (Kennewick, WA); Smith, Ronald M. (Richland, WA); Hall, Stephen H. (Kennewick, WA); Smart, John E. (Richland, WA); Gustafson, Gregg S. (Redmond, WA)

1995-01-01T23:59:59.000Z

10

Well purge and sample apparatus and method  

DOE Patents [OSTI]

The present invention specifically permits purging and/or sampling of a well but only removing, at most, about 25% of the fluid volume compared to conventional methods and, at a minimum, removing none of the fluid volume from the well. The invention is an isolation assembly with a packer, pump and exhaust, that is inserted into the well. The isolation assembly is designed so that only a volume of fluid between the outside diameter of the isolation assembly and the inside diameter of the well over a fluid column height from the bottom of the well to the top of the active portion (lower annulus) is removed. The packer is positioned above the active portion thereby sealing the well and preventing any mixing or contamination of inlet fluid with fluid above the packer. Ports in the wall of the isolation assembly permit purging and sampling of the lower annulus along the height of the active portion. 8 figs.

Schalla, R.; Smith, R.M.; Hall, S.H.; Smart, J.E.; Gustafson, G.S.

1995-10-24T23:59:59.000Z

11

Micro-purge low-flow sampling of uranium-contaminated ground water at the Fernald Environmental Management Project  

SciTech Connect (OSTI)

Efforts to sample representative, undisturbed distributions of uranium in ground water beneath the Fernald Environmental Management Project (FEMP) prompted the application of a novel technique that is less invasive in the monitoring well. Recent studies indicate that representative samples can and should be collected without prior well volume exchange purging or borehole evacuation. Field experiments conducted at the FEMP demonstrate that under specific sampling conditions in a well-defined hydrogeologic system, representative ground water samples for a monitoring program can be obtained without removing the conventional three well volumes from the well. The assumption is made that indicator parameter equilibration may not be necessary to determine when to collect representative samples at the FEMP. Preliminary results obtained form the field experiments suggest that this may be true. The technique employs low purge rates (< 1 L/min) with dedicated bladder pumps with inlets located in the screened interval of the well, while not disturbing the stagnant water column above the screened interval. If adopted, this technique, termed micro-purge low-flow sampling, will produce representative ground water samples significantly reduce sampling costs, and minimize waste water over the monitoring life cycle at the FEMP. This technique is well suited for sites that have been fully characterized and are undergoing long-term monitoring.

Shanklin, D.E. Sidle, W.C.; Ferguson, M.E.

1995-10-01T23:59:59.000Z

12

New technology for purging the steam generators of nuclear power plants  

SciTech Connect (OSTI)

A technology for removal of undissolved impurities from a horizontal steam generator using purge water is developed on the basis of a theoretical analysis. A purge with a maximal flow rate is drawn off from the zone with the highest accumulation of sludge in the lower part of the steam generator after the main circulation pump of the corresponding loop is shut off and the temperatures of the heat transfer medium at the inlet and outlet of the steam generator have equilibrated. An improved purge configuration is used for this technology; it employs shutoff and regulator valves, periodic purge lines separated by a cutoff fixture, and a D{sub y} 100 drain union as a connector for the periodic purge. Field tests show that the efficiency of this technology for sludge removal by purge water is several times that for the standard method.

Budko, I. O.; Kutdjusov, Yu. F.; Gorburov, V. I. [Scientific-Research Center for Energy Technology 'NICE Centrenergo' (Russian Federation); Rjasnyj, S. I. [JSC 'The All-Rissia Nuklear Power Engineering Research and Development Institute' (VNIIAM) (Russian Federation)

2011-07-15T23:59:59.000Z

13

Purged window apparatus. [On-line spectroscopic analysis of gas flow systems  

DOE Patents [OSTI]

A purged window apparatus is described which utilizes tangentially injected heated purge gases in the vicinity of electromagnetic radiation transmitting windows and a tapered external mounting tube to accelerate these gases to provide a vortex flow on the window surface and a turbulent flow throughout the mounting tube thereby preventing backstreaming of flowing gases under investigation in a chamber to which a plurality of similar purged apparatus is attached with the consequent result that spectroscopic analyses can be undertaken for lengthy periods without the necessity of interrupting the flow for cleaning or replacing the windows due to contamination.

Ballard, E.O.

1982-04-05T23:59:59.000Z

14

Nitrogen Front Evolution in Purged Polymer Electrolyte Membrane Fuel Cell with Dead-Ended Anode  

E-Print Network [OSTI]

Nitrogen Front Evolution in Purged Polymer Electrolyte Membrane Fuel Cell with Dead-Ended Anode and experimentally verify the evolution of liquid water and nitrogen fronts along the length of the anode channel in a proton exchange membrane fuel cell operating with a dead-ended anode that is fed by dry hydrogen

Stefanopoulou, Anna

15

RSE Table N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2  

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

N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2;" N2.1 and N2.2. Relative Standard Errors for Tables N2.1 and N2.2;" " Unit: Percents." " "," " "NAICS"," "," ","Residual","Distillate",,"LPG and",,"Coke"," " "Code(a)","Subsector and Industry","Total","Fuel Oil","Fuel Oil(b)","Natural Gas(c)","NGL(d)","Coal","and Breeze","Other(e)" ,,"Total United States" , 311,"Food",6,0,8,0,0,0,0,7 312,"Beverage and Tobacco Products",10,0,82,0,0,0,0,9 313,"Textile Mills",19,0,77,3,20,0,0,48 314,"Textile Product Mills",38,0,0,38,27,0,0,42

16

Characterization of BCl3/N-2 plasmas  

E-Print Network [OSTI]

Optical emission spectroscopy, quadrupole mass spectrometry, and electron density measurements were used to study the effect of the percentage of N-2 on the characteristics of BCl3/N-2 plasmas and their resulting etch ...

Sia, S. F.

2003-08-15T23:59:59.000Z

17

Cryogenic system with GM cryocooler for krypton, xenon separation from hydrogen-helium purge gas  

SciTech Connect (OSTI)

In the thorium molten salt reactor (TMSR), fission products such as krypton, xenon and tritium will be produced continuously in the process of nuclear fission reaction. A cryogenic system with a two stage GM cryocooler was designed to separate Kr, Xe, and H{sub 2} from helium purge gas. The temperatures of two stage heat exchanger condensation tanks were maintained at about 38 K and 4.5 K, respectively. The main fluid parameters of heat transfer were confirmed, and the structural heat exchanger equipment and cold box were designed. Designed concentrations after cryogenic separation of Kr, Xe and H{sub 2} in helium recycle gas are less than 1 ppb.

Chu, X. X.; Zhang, D. X.; Qian, Y.; Liu, W. [Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800 (China); Zhang, M. M.; Xu, D. [Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 (China)

2014-01-29T23:59:59.000Z

18

The ${\\mathcal N}=2$ superconformal bootstrap  

E-Print Network [OSTI]

In this work we initiate the conformal bootstrap program for ${\\mathcal N}=2$ superconformal field theories in four dimensions. We promote an abstract operator-algebraic viewpoint in order to unify the description of Lagrangian and non-Lagrangian theories, and formulate various conjectures concerning the landscape of theories. We analyze in detail the four-point functions of flavor symmetry current multiplets and of ${\\mathcal N}=2$ chiral operators. For both correlation functions we review the solution of the superconformal Ward identities and describe their superconformal block decompositions. This provides the foundation for an extensive numerical analysis discussed in the second half of the paper. We find a large number of constraints for operator dimensions, OPE coefficients, and central charges that must hold for any ${\\mathcal N}=2$ superconformal field theory.

Christopher Beem; Madalena Lemos; Pedro Liendo; Leonardo Rastelli; Balt C. van Rees

2014-12-23T23:59:59.000Z

19

Spent Nuclear Fuel (SNF) Project Cask and MCO Helium Purge System Design Review Completion Report Project A.5 and A.6  

SciTech Connect (OSTI)

This report documents the results of the design verification performed on the Cask and Multiple Canister Over-pack (MCO) Helium Purge System. The helium purge system is part of the Spent Nuclear Fuel (SNF) Project Cask Loadout System (CLS) at 100K area. The design verification employed the ''Independent Review Method'' in accordance with Administrative Procedure (AP) EN-6-027-01.

ARD, K.E.

2000-04-19T23:59:59.000Z

20

Spent nuclear fuel project cold vacuum drying facility vacuum and purge system design description  

SciTech Connect (OSTI)

This document provides the System Design Description (SDD) for the Cold Vacuum Drying Facility (CVDF) Vacuum and Purge System (VPS) . The SDD was developed in conjunction with HNF-SD-SNF-SAR-O02, Safety Analysis Report for the Cold Vacuum Drying Facility, Phase 2, Supporting Installation of Processing Systems (Garvin 1998), The HNF-SD-SNF-DRD-002, 1998, Cold Vacuum Drying Facility Design Requirements, and the CVDF Design Summary Report. The SDD contains general descriptions of the VPS equipment, the system functions, requirements and interfaces. The SDD provides references for design and fabrication details, operation sequences and maintenance. This SDD has been developed for the SNFP Operations Organization and shall be updated, expanded, and revised in accordance with future design, construction and startup phases of the CVDF until the CVDF final ORR is approved.

IRWIN, J.J.

1998-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Parameterization of GDL Liquid Water Front Propagation and Channel Accumulation for Anode Purge Scheduling in Fuel Cells  

E-Print Network [OSTI]

. I. INTRODUCTION Water produced at the cathode catalyst layer can diffuse back to the anode side due of the catalyst support in the cathode [4]. Therefore, scheduling an occasional purge of the anode volume that was observed via neutron imaging of an operational 53 cm2 PEMFC. Simulation results for the GDL and Membrane

Stefanopoulou, Anna

22

N2Solar | Open Energy Information  

Open Energy Info (EERE)

N2Solar N2Solar Jump to: navigation, search Name N2Solar LLC Address 2855 E. Robidoux Rd. Place Sandy, Utah Zip 84093 Sector Solar Product HOE Solar performance optics for PV, CSP, Desal and UV water treatment Year founded 2003 Number of employees 1-10 Phone number 801 608 3180 Coordinates 40.601751°, -111.811322° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.601751,"lon":-111.811322,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

23

Evaluation of the Effectiveness of a New Technology for Extraction of Insoluble Impurities from Nuclear Power Plant Steam Generators with Purge Water  

SciTech Connect (OSTI)

An experimental technology for the removal of insoluble impurities from a horizontal steam generator with purge water during planned shutdowns of the power generating unit is improved through a more representative determination of the concentration of impurities in the purge water ahead of the water cleanup facility and a more precise effective time for the duration of the purge process. Tests with the improved technique at power generating unit No. 1 of the Rostov Nuclear Power Plant show that the efficiency with which insoluble impurities are removed from the steam generator volume was more than two orders of magnitude greater than under the standard regulations.

Bud'ko, I. O. [JSC NIITsE 'Tsentrenergo' (Russian Federation)] [JSC NIITsE 'Tsentrenergo' (Russian Federation); Zhukov, A. G. [Rostov Nuclear Power Plant (Russian Federation)] [Rostov Nuclear Power Plant (Russian Federation)

2013-11-15T23:59:59.000Z

24

Minimal fusion systems.  

E-Print Network [OSTI]

??We define minimal fusion systems in a way that every non-solvable fusion system has a section which is minimal. Minimal fusion systems can also be (more)

Henke, Ellen

2010-01-01T23:59:59.000Z

25

Seasonal variations in N2O emissions from central California  

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

Seasonal variations in N2O emissions from central California Seasonal variations in N2O emissions from central California Title Seasonal variations in N2O emissions from central California Publication Type Journal Article Year of Publication 2012 Authors Jeong, Seongeun, Chuanfeng Zhao, Arlyn E. Andrews, Edward J. Dlugokencky, Colm Sweeney, Laura Bianco, James M. Wilczak, and Marc L. Fischer Journal Geophysical Research Letters Volume 39 Issue 16 Keywords atmospheric transport, inverse modeling, nitrous oxide Abstract We estimate nitrous oxide (N2O) emissions from Central California for the period of December 2007 through November 2009 by comparing N2O mixing ratios measured at a tall tower (Walnut Grove, WGC) with transport model predictions based on two global a priori N2O emission models (EDGAR32 and EDGAR42). Atmospheric particle trajectories and surface footprints are computed using the Weather Research and Forecasting (WRF) and Stochastic Time-Inverted Lagrangian Transport (STILT) models. Regression analyses show that the slopes of predicted on measured N2O from both emission models are low, suggesting that actual N2O emissions are significantly higher than the EDGAR inventories for all seasons. Bayesian inverse analyses of regional N2O emissions show that posterior annual N2O emissions are larger than both EDGAR inventories by factors of 2.0 ± 0.4 (EDGAR32) and 2.1 ± 0.4 (EDGAR42) with seasonal variation ranging from 1.6 ± 0.3 to 2.5 ± 0.4 for an influence region of Central California within approximately 150 km of the tower. These results suggest that if the spatial distribution of N2O emissions in California follows the EDGAR emission models, then actual emissions are 2.7 ± 0.5 times greater than the current California emission inventory, and total N2O emissions account for 8.1 ± 1.4% of total greenhouse gas emissions from California.

26

TECHNICAL REPORTS Continuous measurement of soil N2  

E-Print Network [OSTI]

.5 nmol mol-1 , equal to that of a tunable diode laser N2 O analyzer. The solar/wind hybrid power system and automated chamber system, powered by wind and solar, that can continuously measure soil N2 O emissions performed well during summer, but system failures increased in frequency in spring and fall, usually

Minnesota, University of

27

Unexpected Nondissociative Binding of N2O on Oxygen Vacancies...  

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

Nondissociative Binding of N2O on Oxygen Vacancies on a Rutile TiO2(110)-11 . Unexpected Nondissociative Binding of N2O on Oxygen Vacancies on a Rutile TiO2(110)-11 ....

28

Physisorption of N2, O2, and CO on Fully Oxidized TiO2(110)  

SciTech Connect (OSTI)

Physisorption of N2, O2 and CO was studied on fully oxidized TiO2(110) using beam reflection and temperature programmed desorption (TPD) techniques. Sticking coefficients for all three molecules are nearly equal (0.75 0.05) and approximately independent of coverage suggesting that adsorption occurs via a precursor mediated mechanism. Excluding multilayer coverages, the TPD spectra for all three adsorbates exhibit three distinct coverage regimes that can be interpreted in accord with previous theoretical studies of N2 adsorption. At low coverages (0 to 0.5 N2/Ti4+), N2 molecules bind head-on to five-coordinated Ti4+ ions. The adsorption occurs preferentially on the Ti4+ sites that do not have neighboring adsorbates. This arrangement minimizes the repulsive interactions between the adsorbed molecules along the Ti4+ rows resulting in a relatively small shift of the TPD peak (105 ? 90 K) with increasing coverage. At higher N2 coverages (0 to 1.0 N2/Ti4+) the nearest-neighbor Ti4+ sites become occupied. The close proximity of the adsorbates results in strong repulsion thus giving rise to a significant shift of the TPD leading edges (90 ? 45 K) with increasing coverage. For N2/Ti4+ > 1, an additional low temperature peak (~ 43 K) is present and is ascribed to N2 adsorption on bridge-bonded oxygen rows. The results for O2 and CO are qualitatively similar. The repulsive adsorbate-adsorbate interactions largest for CO, most likely due to aligned CO dipole moments. The coverage dependent binding energies of O2, N2, and CO are determined by inverting TPD profiles.

Dohnalek, Zdenek; Kim, Jooho; Bondarchuk, Oleksander A.; White, J. M.; Kay, Bruce D.

2006-03-30T23:59:59.000Z

29

The O2/N2 Ratio Gas Solubility Mystery  

Science Journals Connector (OSTI)

Oxygen (O2) and nitrogen (N2) are the two most abundant gases in the Earths atmosphere and have generally similar physical properties, yet O2 is twice as soluble in water as N2, a feature that may have physiological and other biological consequences. ... In addition, a sensible explanation for the difference in the aqueous solubilities of O2 and N2 would provide some insight into the factors determining gas solubility in water. ... The soly. of 408 gaseous compds. in water at 298 K has been correlated through equation (i), where the soly. is expressed as the Ostwald soly. ...

Rubin Battino; Paul G. Seybold

2011-10-20T23:59:59.000Z

30

Chiral and real N=2 supersymmetric ?-conformal Galilei algebras  

SciTech Connect (OSTI)

Inequivalent N=2 supersymmetrizations of the ?-conformal Galilei algebra in d-spatial dimensions are constructed from the chiral (2, 2) and the real (1, 2, 1) basic supermultiplets of the N=2 supersymmetry. For non-negative integer and half-integer ?, both superalgebras admit a consistent truncation with a (different) finite number of generators. The real N=2 case coincides with the superalgebra introduced by Masterov, while the chiral N=2 case is a new superalgebra. We present D-module representations of both superalgebras. Then we investigate the new superalgebra derived from the chiral supermultiplet. It is shown that it admits two types of central extensions, one is found for any d and half-integer ?, and the other only for d= 2 and integer ?. For each central extension, the centrally extended ?-superconformal Galilei algebra is realized in terms of its super-Heisenberg subalgebra generators.

Aizawa, N. [Department of Mathematics and Information Sciences, Graduate School of Science, Osaka Prefecture University, Nakamozu Campus, Sakai, Osaka 599-8351 (Japan)] [Department of Mathematics and Information Sciences, Graduate School of Science, Osaka Prefecture University, Nakamozu Campus, Sakai, Osaka 599-8351 (Japan); Kuznetsova, Z. [UFABC, Rua Santa Adlia 166, Bangu, cep 09210-170, Santo Andr, SP (Brazil)] [UFABC, Rua Santa Adlia 166, Bangu, cep 09210-170, Santo Andr, SP (Brazil); Toppan, F. [CBPF, Rua Dr. Xavier Sigaud 150, Urca, cep 22290-180, Rio de Janeiro, RJ (Brazil)] [CBPF, Rua Dr. Xavier Sigaud 150, Urca, cep 22290-180, Rio de Janeiro, RJ (Brazil)

2013-09-15T23:59:59.000Z

31

A decoupled approach for NOxN2O 3-D CFD modeling in CFB plants  

Science Journals Connector (OSTI)

Abstract In this study, a 3D CFD model for the formation of \\{NOx\\} and N2O in a lignite fired 1.2MWth CFB pilot plant is developed. The decoupled approach (decoupled from combustion simulation) is tested for the minimization of computational cost. As combustion simulation is prerequired, this was achieved through a simplified 3-D CFD combustion model. The developed model is then applied to the pilot-scale 1.2MWth CFB plant and validated against experimental data. As concerns the NOxN2O model, an extensive literature review is also carried out for the incorporation of the appropriate reactions network and respective reaction rates expressions. Results show that homogenous reactions are favoured on the lower section of the bed, due to the abundance of fuel devolatilization products. On the other hand, on the upper section, heterogeneous reactions govern nitric oxide formation/reduction. It is found that for the lignite examined in this work, HCN is released in negligible amounts during char combustion. The proposed and validated CFD model for \\{NOx\\} and N2O, is capable of examining the effect of different operational parameters and coal properties on the overall nitric oxides emissions from a CFB combustor, with low computational cost and without the additional expenses for pilot-scale experiments.

A. Nikolopoulos; I. Malgarinos; N. Nikolopoulos; P. Grammelis; S. Karrelas; E. Kakaras

2014-01-01T23:59:59.000Z

32

Introduction Minimal generation  

E-Print Network [OSTI]

Introduction Minimal generation Random generation Minimal and probabilistic generation of finite generation of finite groups #12;Introduction Minimal generation Random generation Some motivation Let x1 random elements of G = x1, . . . , xk . (G is the group generated by x1, . . . , xk : all possible

St Andrews, University of

33

N=2 Super Boussinesq Hierarchy: Lax Pairs and Conservation Laws  

E-Print Network [OSTI]

We study the integrability properties of the one-parameter family of $N=2$ super Boussinesq equations obtained earlier by two of us (E.I. \\& S.K., Phys. Lett. B 291 (1992) 63) as a hamiltonian flow on the $N=2$ super-$W_3$ algebra. We show that it admits nontrivial higher order conserved quantities and hence gives rise to integrable hierarchies only for three values of the involved parameter, $\\alpha=-2,\\;-1/2,\\;5/2$. We find that for the case $\\alpha = -1/2$ there exists a Lax pair formulation in terms of local $N=2$ pseudo-differential operators, while for $\\alpha = -2$ the associated equation turns out to be bi-hamiltonian.

S. Bellucci; E. Ivanov; S. Krivonos; A. Pichugin

1993-05-18T23:59:59.000Z

34

Characteristics of atmospheric-pressure non-thermal N2 and N2/O2 gas mixture plasma jet  

Science Journals Connector (OSTI)

An atmospheric-pressure non-thermal plasma jet driven by high frequency alternating current and operating on N2 and N2/O2 gas mixture is investigated. The plasma jet can reach 55?mm in length at a gas flow rate of 2500?l/h. The gas temperature at a distance of 4?mm from the nozzle is close to room temperature. Optical emission spectroscopy is employed to investigate the important plasma parameters such as the excited species rotational temperature vibrational temperature and excitation temperature under different discharge conditions. The results show that the plasma source operates under non-equilibrium conditions. The absolute irradiance intensity of the vibrational band N2(C-B) in the active region is measured. Taking into account the irradiance intensity of N2(C-B 0-0) and N2(B-X 0-0) as well as measured current the electron density which is determined by considering direct and step-wise electron impact excitation of nitrogen emission reaches a maximum value of 5.6??1020/m3.

Dezhi Xiao; Cheng Cheng; Jie Shen; Yan Lan; Hongbing Xie; Xingsheng Shu; Jiangang Li; Paul K. Chu

2014-01-01T23:59:59.000Z

35

Nozick's minimal state?  

E-Print Network [OSTI]

In his book, Anarchy , State, and Utopia, Robert Nozick argues that the only state that can be justified is the minimal state, a state limited to providing protection for all its citizens. Nozick explains how a minimal state could naturally develop...

Russell, Darrell James

2012-06-07T23:59:59.000Z

36

Nonlocality from N>2 independent single-photon emitters  

SciTech Connect (OSTI)

We demonstrate that intensity correlations of second order in the fluorescence light of N>2 single-photon emitters may violate locality while the visibility of the signal remains below 1/{radical}(2){approx_equal}71%. For this, we derive a homogeneous Bell-Wigner-type inequality, which can be applied to a broad class of experimental setups. We trace the violation of this inequality back to path entanglement created by the process of detection.

Thiel, C.; Wiegner, R.; Zanthier, J. von [Institut fuer Optik, Information und Photonik, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany); Agarwal, G. S. [Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072 (United States)

2010-09-15T23:59:59.000Z

37

Transpiration purged optical probe  

DOE Patents [OSTI]

An optical apparatus for clearly viewing the interior of a containment vessel by applying a transpiration fluid to a volume directly in front of the external surface of the optical element of the optical apparatus. The fluid is provided by an external source and transported by means of an annular tube to a capped end region where the inner tube is perforated. The perforation allows the fluid to stream axially towards the center of the inner tube and then axially away from an optical element which is positioned in the inner tube just prior to the porous sleeve. This arrangement draws any contaminants away from the optical element keeping it free of contaminants. In one of several embodiments, the optical element can be a lens, a viewing port or a laser, and the external source can provide a transpiration fluid having either steady properties or time varying properties.

2004-01-06T23:59:59.000Z

38

N=2 gauge theories and degenerate fields of Toda theory  

SciTech Connect (OSTI)

We discuss the correspondence between degenerate fields of the W{sub N} algebra and punctures of Gaiotto's description of the Seiberg-Witten curve of N=2 superconformal gauge theories. Namely, we find that the type of degenerate fields of the W{sub N} algebra, with null states at level one, is classified by Young diagrams with N boxes, and that the singular behavior of the Seiberg-Witten curve near the puncture agrees with that of W{sub N} generators. We also find how to translate mass parameters of the gauge theory to the momenta of the Toda theory.

Kanno, Shoichi; Matsuo, Yutaka; Shiba, Shotaro [Department of Physics, Faculty of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Tachikawa, Yuji [School of Natural Sciences, Institute for Advanced Study, Princeton, New Jersey 08540 (United States)

2010-02-15T23:59:59.000Z

39

Waste minimization assessment procedure  

SciTech Connect (OSTI)

Perry Nuclear Power Plant began developing a waste minimization plan early in 1991. In March of 1991 the plan was documented following a similar format to that described in the EPA Waste Minimization Opportunity Assessment Manual. Initial implementation involved obtaining management's commitment to support a waste minimization effort. The primary assessment goal was to identify all hazardous waste streams and to evaluate those streams for minimization opportunities. As implementation of the plan proceeded, non-hazardous waste streams routinely generated in large volumes were also evaluated for minimization opportunities. The next step included collection of process and facility data which would be useful in helping the facility accomplish its assessment goals. This paper describes the resources that were used and which were most valuable in identifying both the hazardous and non-hazardous waste streams that existed on site. For each material identified as a waste stream, additional information regarding the materials use, manufacturer, EPA hazardous waste number and DOT hazard class was also gathered. Once waste streams were evaluated for potential source reduction, recycling, re-use, re-sale, or burning for heat recovery, with disposal as the last viable alternative.

Kellythorne, L.L. (Centerior Energy, Cleveland, OH (United States))

1993-01-01T23:59:59.000Z

40

Multi-instanton calculus in N=2 supersymmetric gauge theory  

Science Journals Connector (OSTI)

The Seiberg-Witten solution of N=2 supersymmetric SU(2) gauge theory may be viewed as a prediction for the infinite family of constants {Fn} measuring the n-instanton contribution to the prepotential F. Here we examine the instanton physics directly, in particular the contribution of the general self-dual solution of topological charge n constructed by Atiyah, Drinfeld, Hitchin, and Manin (ADHM). In both the bosonic and supersymmetric cases, we determine both the large- and short-distance behavior of all the fields in this background. This allows us to construct the exact classical interaction between n ADHM (super)instantons mediated by the adjoint Higgs bosons. We calculate the one- and two-instanton contributions to the low-energy Seiberg-Witten effective action and find precise agreement with their predicted values of F1 and F2.

Nicholas Dorey; Valentin V. Khoze; Michael P. Mattis

1996-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Neutrino parameters and the $N_2$-dominated scenario of leptogenesis  

E-Print Network [OSTI]

We briefly review the main aspects of leptogenesis, describing both the unflavoured and the flavoured versions of the $N_2$-dominated scenario. A study of the success rates of both classes of models has been carried out. We comment on these results and discuss corrective effects to this simplest scenario. Focusing on the flavoured case, we consider the conditions required by strong thermal leptogenesis, where the final asymmetry is fully independent of the initial conditions. Barring strong cancellations in the seesaw formula and in the flavoured decay parameters, we show that strong thermal leptogenesis favours a lightest neutrino mass $m_1\\gtrsim10\\,\\mbox{meV}$ for normal ordering (NO) and $m_1\\gtrsim 3\\,\\mbox{meV}$ for inverted ordering (IO). Finally, we briefly comment on the power of absolute neutrino mass scale experiments to either support or severely corner strong thermal leptogenesis.

Michele Re Fiorentin; Sophie E. King

2014-05-09T23:59:59.000Z

42

Properties of minimal ghosts  

Science Journals Connector (OSTI)

A ghost image is an array of signed pixel values so positioned as to create zero-sums in all discrete projections taken across that image for a pre-defined set of angles. The discrete projection scheme used here is the finite Radon transform. Minimal ...

Imants Svalbe; Nicolas Normand

2011-04-01T23:59:59.000Z

43

Offsetting the radiative benefit of ocean iron fertilization by enhancing N2O emissions  

E-Print Network [OSTI]

from the atmospheric CO2 reduction significantly, because N2O is a much more powerful greenhouse gas

Gruber, Nicolas

44

Global distribution of N2O emissions from aquatic systems: natural emissions and anthropogenic eects  

E-Print Network [OSTI]

Global distribution of N2O emissions from aquatic systems: natural emissions and anthropogenic, are increasing due to human activities. Our analysis suggests that a third of global anthropogenic N2O emission the remainder. Over 80% of aquatic anthropogenic N2O emissions are from the Northern Hemisphere mid

Seitzinger, Sybil

45

Minimally refined biomass fuel  

DOE Patents [OSTI]

A minimally refined fluid composition, suitable as a fuel mixture and derived from biomass material, is comprised of one or more water-soluble carbohydrates such as sucrose, one or more alcohols having less than four carbons, and water. The carbohydrate provides the fuel source; water solubilizes the carbohydrates; and the alcohol aids in the combustion of the carbohydrate and reduces the vicosity of the carbohydrate/water solution. Because less energy is required to obtain the carbohydrate from the raw biomass than alcohol, an overall energy savings is realized compared to fuels employing alcohol as the primary fuel.

Pearson, Richard K. (Pleasanton, CA); Hirschfeld, Tomas B. (Livermore, CA)

1984-01-01T23:59:59.000Z

46

Synthesis and Optical Properties of NuTaN2: Potential Solar Cell Applications  

SciTech Connect (OSTI)

Layered CuTaN2 was synthesized by an ion exchange reaction of CuI and NaTaN2 as previously reported. Based on the results of EDX analysis, the Cu:Ta ratio of the CuTaN2 sample was 1:1 within the overall errors when examining powders of +/-10% and no Na was detected. The crystal structure and thermal stability of CuTaN2 was accurately determined by Rietveld analysis of the powder X-ray Diffraction profile and by TGA analysis, respectively. CuTaN2 crystallizes in a rhombohedral structure with space group R-3mH as shown in [figure 1]. CuTaN2 possesses a band gap of 1.53(x) eV, which is in reasonable agreement with density functional theory calculations of Cu containing nitrides. Similar materials may be even better suited for solar cell application.

Yang, M.; Zakutayev, A.; Zhang, X.; Ginley, D.; DiSalvo, F.

2013-01-01T23:59:59.000Z

47

The development of N2S2 metal complexes as bidentate ligands for organometallic chemistry  

E-Print Network [OSTI]

from CO addition to (NiN2S2)W(CO)4, which is in equilibrium with the resulting (NiN2S2)W(CO)5 species (Keq = 2.8 M-1, G = -1.4 kJ/mole at 50C). Complete NiN2S2 ligand displacement by CO-cleavage of the remaining W-S bond to form W(CO)6 was not observed...

Rampersad, Marilyn Vena

2007-04-25T23:59:59.000Z

48

Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...  

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

intracellular transport and trafficking. Citation: Liberton ML, JR Austin, RH Berg, and HB Pakrasi.2011."Unique Thylakoid Membrane Architecture of aUnicellular N2-Fixing...

49

Generalised CP and $\\Delta (6n^2)$ Family Symmetry in Semi-Direct Models of Leptons  

E-Print Network [OSTI]

We perform a detailed analysis of $\\Delta (6n^2)$ family symmetry combined with a generalised CP symmetry in the lepton sector, breaking to different remnant symmetries $G_{\

Ding, Gui-Jun; Neder, Thomas

2014-01-01T23:59:59.000Z

50

ENERGY-MINIMIZING INCOMPRESSIBLE NEMATIC ...  

E-Print Network [OSTI]

We prove weak lower semi-continuity and existence of energy-minimizers for a free energy describing stable deformations and the corresponding director...

2014-04-25T23:59:59.000Z

51

Minimize Boiler Short Cycling Losses  

Broader source: Energy.gov [DOE]

This tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

52

Uncertainties Associated with Theoretically Calculated N2-Broadened Half-Widths of H2O Lines  

E-Print Network [OSTI]

to be calculated theoretically. The accuracy of these calculated values depends on many factors such as the line-shape1 Uncertainties Associated with Theoretically Calculated N2- Broadened Half-Widths of H2O Lines Q-offs used in the theoretical calculations, we have carried out extensive numerical calculations of the N2

Gamache, Robert R.

53

Raman excitation profiles for the (n1, n2) assignment in carbon nanotubes  

E-Print Network [OSTI]

Raman excitation profiles for the (n1, n2) assignment in carbon nanotubes H. Telg , J. Maultzsch indices n1 and n2 in semiconducting and metallic nanotubes was performed comparing resonance Raman nanotube families. Ever since the discovery of how to keep isolated nanotubes from rebundeling in solu

Nabben, Reinhard

54

Impact of N2 dilution on combustion and emissions in a spark ignition CNG engine  

Science Journals Connector (OSTI)

Abstract In order to reduce \\{NOx\\} (nitrogen oxides) emissions, N2 (nitrogen) was introduced as dilution gas to dilute mixture with a specially-designed injection device. The impacts of varying N2 DR (dilution ratio) on the combustion and the exhaust emissions were investigated, including engine heat release rate, indicator diagram, NOx, CO (carbon monoxide), THC (total hydrocarbon) emissions and so on. For this study, a modified 6.6L CNG (compressed natural gas) engine was tested and N2 was injected into the end of intake manifold by a specially-designed device. The results showed that N2 dilution has a significant influence on the combustion and the exhaust emissions. With the rise of N2 DR, the maximum of pressure in cylinder and the maximum of heat release rate exhibited decrease trends, the centre of heat release curve showed a moving backward tendency. Higher N2 DR exhibited lower \\{NOx\\} (1781%) emissions, but higher emissions of THC (378%) and CO (128%). The change of BSFC (brake specific fuel consumption) can be ignored with N2 DR no more than 167%. Satisfactory results can be obtained, with lower \\{NOx\\} (31%) emissions, lower BSFC (0.5%), and relatively higher THC (6%) and CO (1%) emissions, when N2 DR is 67%.

Zhongshu Wang; Hongbin Zuo; Zhongchang Liu; Weifeng Li; Huili Dou

2014-01-01T23:59:59.000Z

55

A New High-Resolution N2O Emission Inventory for China in 2008  

Science Journals Connector (OSTI)

Per-capita and per-GDP N2O emissions increase gradually with an increase in the urban population fraction from 0.3 to 0.9 among 2884 counties, and N2O emission density increases with urban expansion. ... (56-58) This decrease of demand would eventually reduce some of the food and energy supplies in these regions. ...

Feng Zhou; Ziyin Shang; Philippe Ciais; Shu Tao; Shilong Piao; Peter Raymond; Canfei He; Bengang Li; Rong Wang; Xuhui Wang; Shushi Peng; Zhenzhong Zeng; Han Chen; Na Ying; Xikang Hou; Peng Xu

2014-06-25T23:59:59.000Z

56

The substitution reaction of (CNC)Fe?2N2 with CO  

Science Journals Connector (OSTI)

In the first SN2 substitution step, C1-O1 molecule replaces the axial N3-N4 of (CNC)Fe(N2)_N2, by attacking Fe center from the opposite direction of N3-N4. In the transition state of SN2TS1, the Fe-N3 bond has be...

Hongyan Liu; Shuangshuang Liu; Xiang Zhang

2013-06-01T23:59:59.000Z

57

15N2 formation and fast oxygen isotope exchange during pulsed...  

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

N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOxCeO2. 15N2 formation and fast oxygen isotope exchange during pulsed 15N18O exposure of MnOx...

58

Comparison of corrosion measurements by use of AC-impedance, LPR and polarization methods on carbon steel in CO{sub 2} purged NACL electrolytes  

SciTech Connect (OSTI)

Comparative measurements are performed on carbon steel in CO{sub 2} purged and aerated sodium chloride solutions at different salinities on rotated and stationary electrodes. The results from the use of the AC-Impedance measuring technique are compared with more traditional techniques like Linear Polarization Resistance (LPR) and Polarization using Tafel equations. Electron microscope analyses were obtained to monitor the film formation rate and to facilitate the comparison of the results from the use of the AC-impedance technique. Generally, corrosion in the CO{sub 2} environment was higher than in the aerated solutions, but when the electrodes were rotated, a protective carbonate film was formed which gave a decrease in corrosion rate. Generally, corrosion rates horn AC-impedance measurements gave higher results than the rates from LPR-measurements. High electrolyte resistance (R{sub s}), i.e. low salinity and low polarization resistance (R{sub p}), in AC-impedance measurements caused high deviation from the LPR-results.

Aagotnes, N.O.; Hernmingsenl, T.; Haarseths, C.; Midttveit, I. [Stavanger Coll. (Norway)

1999-11-01T23:59:59.000Z

59

David J. Hathaway, IBM EDAInverter Minimization 1 Inverter Minimization -OverviewInverter Minimization -Overview  

E-Print Network [OSTI]

David J. Hathaway, IBM EDAInverter Minimization 1 Inverter Minimization - OverviewInverter network a polarity graph 9 Initially consider only equal cost AND, NAND, OR, and NOR gates 9 Inverters for covering fundamental cycles 9 Considering electrically useful inverters #12;David J. Hathaway, IBM

Ellis-Monaghan, Joanna

60

FROM THE COLOR-MAGNITUDE DIAGRAM OF {omega} CENTAURI AND (SUPER-)ASYMPTOTIC GIANT BRANCH STELLAR MODELS TO A GALACTIC PLANE PASSAGE GAS PURGING CHEMICAL EVOLUTION SCENARIO  

SciTech Connect (OSTI)

We have investigated the color-magnitude diagram of {omega} Centauri and find that the blue main sequence (bMS) can be reproduced only by models that have a helium abundance in the range Y = 0.35-0.40. To explain the faint subgiant branch of the reddest stars ('MS-a/RG-a' sequence), isochrones for the observed metallicity ([Fe/H] Almost-Equal-To -0.7) appear to require both a high age ({approx}13 Gyr) and enhanced CNO abundances ([CNO/Fe] Almost-Equal-To 0.9). Y Almost-Equal-To 0.35 must also be assumed in order to counteract the effects of high CNO on turnoff colors and thereby to obtain a good fit to the relatively blue turnoff of this stellar population. This suggests a short chemical evolution period of time (<1 Gyr) for {omega} Cen. Our intermediate-mass (super-)asymptotic giant branch (AGB) models are able to reproduce the high helium abundances, along with [N/Fe] {approx}2 and substantial O depletions if uncertainties in the treatment of convection are fully taken into account. These abundance features distinguish the bMS stars from the dominant [Fe/H] Almost-Equal-To -1.7 population. The most massive super-AGB stellar models (M{sub ZAMS} {>=} 6.8 M{sub Sun }, M{sub He,core} {>=} 1.245 M{sub Sun }) predict too large N enhancements, which limit their role in contributing to the extreme populations. In order to address the observed central concentration of stars with He-rich abundance, we show here quantitatively that highly He- and N-enriched AGB ejecta have particularly efficient cooling properties. Based on these results and on the reconstruction of the orbit of {omega} Cen with respect to the Milky Way, we propose the Galactic plane passage gas purging scenario for the chemical evolution of this cluster. The bMS population formed shortly after the purging of most of the cluster gas as a result of the passage of {omega} Cen through the Galactic disk (which occurs today every {approx}40 Myr for {omega} Cen) when the initial mass function of the dominant population had 'burned' through most of the Type II supernova mass range. AGB stars would eject most of their masses into the gas-depleted cluster through low-velocity winds that sink to the cluster core due to their favorable cooling properties and form the bMS population. In our discussion we follow our model through four passage events, which could explain some key properties not only of the bMS but also of the MS-a/RGB-a and the s-enriched stars.

Herwig, Falk; VandenBerg, Don A.; Navarro, Julio F. [Department of Physics and Astronomy, University of Victoria, P.O. Box 3055, Victoria, BC V8W 3P6 (Canada); Ferguson, Jason [Department of Physics, Wichita State University Wichita, KS 67260 (United States); Paxton, Bill, E-mail: fherwig@uvic.ca, E-mail: vandenbe@uvic.ca, E-mail: jason.ferguson@wichita.edu, E-mail: paxton@kitp.ucsb.edu [KITP/UC Santa Barbara, Santa Barbara, CA 93106 (United States)

2012-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Minimize Boiler Short Cycling Losses  

SciTech Connect (OSTI)

This revised ITP tip sheet on minimizing boiler short cycling losses provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

62

Minimal energy for elastic inclusions  

Science Journals Connector (OSTI)

...articles 1008 4 120 Minimal energy for elastic inclusions Hans...Courant Institute, New York University, , Mercer Street 251, New York, NY 10012, USA We...term representing elastic energy. More precisely, our aim...

2011-01-01T23:59:59.000Z

63

Multi-Instanton Measure from Recursion Relations in N = 2 Supersymmetric Yang-Mills Theory  

Science Journals Connector (OSTI)

By using the recursion relations found in the framework of N = 2 Super Yang-Mills theory with gauge group SU(2), we reconstruct the structure of the instanton moduli space and its volume form for all winding numbers.

Marco Matone

2001-01-01T23:59:59.000Z

64

Electronic structure calculations of small Al n (n=28) clusters  

Science Journals Connector (OSTI)

The electronic states of small Al n (n...=28) clusters have been calculated with a relativistic ab-initio MO-LCAO Dirac-Fock-Slater method using numerical atomic DFS wave-funct...

T. Bastug; W. D. Sepp; B. Fricke

1992-01-01T23:59:59.000Z

65

External Electric Field Catalyzed N2O Decomposition on Mn-Embedded Graphene  

Science Journals Connector (OSTI)

External Electric Field Catalyzed N2O Decomposition on Mn-Embedded Graphene ... Key Laboratory of Automobile Materials, Ministry of Education, and Department of Materials Science and Engineering, Jilin University, Changchun 130022, China ...

E. H. Song; J. M. Yan; J. S. Lian; Q. Jiang

2012-09-05T23:59:59.000Z

66

Phase separation, density fluctuation, and critical dynamics of N2 in aerogel  

Science Journals Connector (OSTI)

Light scattering was used to study N2 confined in aerogel. We find evidence of liquid-vapor phase separation that terminates at a critical point. Whereas the width of the coexistence curves is substantialy reduced relative to bulk N2, the shape of the coexistence curve is similar to that found for the bulk. Photon correlation spectroscopy shows that the density fluctuations decay algebraically in time, a result consistent with the random-field Ising model.

A. P. Y. Wong; S. B. Kim; W. I. Goldburg; M. H. W. Chan

1993-02-15T23:59:59.000Z

67

Relative importance of organic coatings for the heterogeneous hydrolysis of N2O5 during summer in Europe  

E-Print Network [OSTI]

coatings, formed via gas-to- particle conversion on aqueous aerosols, to N2O5 hydrolysis on localRelative importance of organic coatings for the heterogeneous hydrolysis of N2O5 during summer suppress heterogeneous N2O5 hydrolysis. In this study we investigated the relative importance of organic

Riemer, Nicole

68

LLNL Waste Minimization Program Plan  

SciTech Connect (OSTI)

This document is the February 14, 1990 version of the LLNL Waste Minimization Program Plan (WMPP). The Waste Minimization Policy field has undergone continuous changes since its formal inception in the 1984 HSWA legislation. The first LLNL WMPP, Revision A, is dated March 1985. A series of informal revision were made on approximately a semi-annual basis. This Revision 2 is the third formal issuance of the WMPP document. EPA has issued a proposed new policy statement on source reduction and recycling. This policy reflects a preventative strategy to reduce or eliminate the generation of environmentally-harmful pollutants which may be released to the air, land surface, water, or ground water. In accordance with this new policy new guidance to hazardous waste generators on the elements of a Waste Minimization Program was issued. In response to these policies, DOE has revised and issued implementation guidance for DOE Order 5400.1, Waste Minimization Plan and Waste Reduction reporting of DOE Hazardous, Radioactive, and Radioactive Mixed Wastes, final draft January 1990. This WMPP is formatted to meet the current DOE guidance outlines. The current WMPP will be revised to reflect all of these proposed changes when guidelines are established. Updates, changes and revisions to the overall LLNL WMPP will be made as appropriate to reflect ever-changing regulatory requirements. 3 figs., 4 tabs.

Not Available

1990-02-14T23:59:59.000Z

69

Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core  

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

Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core Modern Records of Atmospheric Nitrous Oxide (N2O) and a 2000-year Ice-core Record from Law Dome, Antarctica Introduction This page provides an introduction and links to records of atmospheric nitrous oxide (N2O) over the last 2000 years, emphasizing large data bases each representing currently active stations. Records in recent decades (time period depending on location) have been obtained from samples of ambient-air at remote locations, which represent changing global atmospheric conditions rather than influences of local sources. The longer (2000-year) record is from the Law Dome ice core in Antarctica. The ice-core record has been merged with modern annual data from Cape Grim, Tasmania to provide a 2000-year time series of annual values. A spline function has been fit to the data to provide a continuous time series of

70

Gauge/Gravity Duality, Green Functions of N=2 SYM and Radial/Energy-Scale Relation  

E-Print Network [OSTI]

We consider supergravity configuration of D5 branes wrapped on supersymmetric 2-cycles and use it to calculate one-point and two-point Green functions of some special operators in N=2 super Yang-Mills theory. We show that Green functions obtained from supergravity include two very different parts. One of them corresponds to perturbative results of quantum field theory, and another is a non-perturbative effect which corresponds to contribution from instantons with fractional charge. Comparing Green functions obtained from supergravity and gauge theory, we obtain radial/energy-scale relation for this gauge/gravity correspondence with N=2 supersymmetry. This relation leads right beta-function of N=2 SYM from supergravity configuration.

Xiao-Jun Wang; Seng Hu

2002-07-16T23:59:59.000Z

71

Experimental and theoretical study of the (n,2n) reaction on 174,176Hf isotopes  

Science Journals Connector (OSTI)

Cross sections for the 174Hf(n,2n)173Hf and 176Hf(n,2n)175Hf reactions have been measured on the 5.5-MV Van de Graaff tandem accelerator of National Centre for Scientific Research Demokritos in Athens, in the neutron energy region from 8.8 to 11.0 MeV, using the activation technique. An experimental method to account for the contamination of the 176Hf(n,2n) reaction by the 174Hf(n,?) reaction activated by the parasitic neutrons of the beam is presented. Statistical model calculations have also been performed using the nuclear-reaction codes empire-ii and talys. The results and effects of the nuclear input parameters as well as pre-equilibrium emission are discussed in detail.

M. Serris; M. Diakaki; S. Galanopoulos; M. Kokkoris; M. Lamprou; C. T. Papadopoulos; R. Vlastou; P. Demetriou; C. A. Kalfas; A. Lagoyannis

2012-09-07T23:59:59.000Z

72

WIPP WASTE MINIMIZATION PROGRAM DESCRIPTION  

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

Carlsbad, New Mexico 8822 Carlsbad, New Mexico 8822 1 NOV 2 3 2011 Mr. John Kieling , Acting Bureau Chief Hazardous Waste Bureau New Mexico Environme nt Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Transmittal of the Waste Isolation Pilot Plant Annual Waste Minimization Report Dear Mr. Kieling: This letter provides the submittal of the Waste Isolation Pilot Plant Annual Waste Minimization Report. This report is required by and has bee n prepared in accordance with the WIPP Hazardous Waste Facility Perm it Part 2, Permit Condition 2.4. We certify under penalty of law that this document and all enclosures were prepared under our direction or supervision according to a system designed to assure that qualified personnel properly gather and evaluate the information submitted

73

A Minimally Symmetric Higgs Boson  

E-Print Network [OSTI]

Models addressing the naturalness of a light Higgs boson typically employ symmetries, either bosonic or fermionic, to stabilize the Higgs mass. We consider a setup with the minimal amount of symmetries: four shift symmetries acting on the four components of the Higgs doublet, subject to the constraints of linearly realized SU(2)xU(1) electroweak symmetry. Up to terms that explicitly violate the shift symmetries, the effective lagrangian can be derived, irrespective of the spontaneously broken group G in the ultraviolet, and is universal in all models where the Higgs arises as a pseudo-Nambu-Goldstone boson (PNGB). Very high energy scatterings of vector bosons could provide smoking gun signals of a minimally symmetric Higgs boson.

Ian Low

2014-12-05T23:59:59.000Z

74

Minimal universal quantum heat machine  

E-Print Network [OSTI]

In traditional thermodynamics the Carnot cycle yields the ideal performance bound of heat engines and refrigerators. We propose and analyze a minimal model of a heat machine that can play a similar role in quantum regimes. The minimal model consists of a single two-level system with periodically modulated energy splitting that is permanently, weakly, coupled to two spectrally-separated heat baths at different temperatures. The equation of motion allows to compute the stationary power and heat currents in the machine consistently with the second-law of thermodynamics. This dual-purpose machine can act as either an engine or a refrigerator (heat pump) depending on the modulation rate. In both modes of operation the maximal Carnot efficiency is reached at zero power. We study the conditions for finite-time optimal performance for several variants of the model. Possible realizations of the model are discussed.

David Gelbwaser-Klimovsky; Robert Alicki; Gershon Kurizki

2012-09-06T23:59:59.000Z

75

A Minimally Symmetric Higgs Boson  

E-Print Network [OSTI]

Models addressing the naturalness of a light Higgs boson typically employ symmetries, either bosonic or fermionic, to stabilize the Higgs mass. We consider a setup with the minimal amount of symmetries: four shift symmetries acting on the four components of the Higgs doublet, subject to the constraints of linearly realized SU(2)xU(1) electroweak symmetry. Up to terms that explicitly violate the shift symmetries, the effective lagrangian can be derived, irrespective of the spontaneously broken group G in the ultraviolet, and is universal in all models where the Higgs arises as a pseudo-Nambu-Goldstone boson (PNGB). Very high energy scatterings of vector bosons could provide smoking gun signals of a minimally symmetric Higgs boson.

Low, Ian

2014-01-01T23:59:59.000Z

76

New estimates of global emissions of N2O from rivers and estuaries  

E-Print Network [OSTI]

from rivers and estuaries. We present total global emissions, as well as regional shares. 2New estimates of global emissions of N2O from rivers and estuaries CAROLIEN KROEZE1 , EGON DUMONT1 rivers and estuaries, using the NEWS-DIN model. NEWS-DIN is a model of the global transport of dissolved

Seitzinger, Sybil

77

Shock-Tube Study of Methane Ignition with NO2 and N2O  

E-Print Network [OSTI]

. The experimental pressure range was 1 - 44 atm and the temperature range tested was 1177 2095 K. The additives NO2 and N2O were added in concentrations from 831 ppm to 3539 ppm. The results of the mixtures with NO2 have a reduction in ignition delay time across...

Pemelton, John

2012-10-19T23:59:59.000Z

78

Instanton calculus and nonperturbative relations in N=2 supersymmetric gauge theories  

Science Journals Connector (OSTI)

Using instanton calculus we check, in the weak coupling region, the nonperturbative relation ?Tr?2?=i?[F-(a/2)?F/?a] obtained for a N=2 globally supersymmetric gauge theory. Our computations are performed for instantons of winding number k, up to k=2, and turn out to agree with previous nonperturbative results.

Francesco Fucito and Gabriele Travaglini

1997-01-15T23:59:59.000Z

79

Vibrational spectra of N2: An advanced undergraduate laboratory in atomic and molecular spectroscopy  

E-Print Network [OSTI]

an advanced laboratory course focused on spectroscopy of atoms and molecules, for a diverse and solid#12;Vibrational spectra of N2: An advanced undergraduate laboratory in atomic and molecular to demonstrate molecular spectroscopy by measuring the vibrational energy spacing of nitrogen molecules

Bayram, S. Burçin

80

Sminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics  

E-Print Network [OSTI]

Séminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics Le 06 Septembre TOULOUSE Cedex 4 Résumé Droplet-based microfluidics has a tremendous potential for the miniaturization of chemicals in microfluidic systems is therefore a key to reliably downscale the assays from microtiter plates

Ingrand, François

Note: This page contains sample records for the topic "n2 purged minimal" 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

MIS 381N.2 Research in Information Systems: Organizational and Behavioral Perspectives  

E-Print Network [OSTI]

, corporate strategy and IT, business value of IT, knowledge management and organizational learning1 MIS 381N.2 Research in Information Systems: Organizational and Behavioral Perspectives Spring creation, to new organizational, network, and community structures, to a new cadre of business models

Ghosh, Joydeep

82

Ann. Polon. Math., 90, N2, (2007), 145-148. Invisible obstacles  

E-Print Network [OSTI]

Ann. Polon. Math., 90, N2, (2007), 145-148. 1 #12;Invisible obstacles A.G. Ramm Mathematics number will be as small as one wishes. The obstacle is called "invisible" in this case. 1 Introduction ([1]). key words: wave scattering, inverse problems, invisible obstacles AMS subject classification

83

Orientational-ordering transition fcc-Pa3 of Ar1-x(N2)x  

Science Journals Connector (OSTI)

Solid solutions of Ar1-x(N2)x, 0.83

H. Klee and K. Knorr

1991-04-01T23:59:59.000Z

84

CH4 and N2O emissions from Spartina alterniflora and Phragmites australis in experimental mesocosms  

E-Print Network [OSTI]

Author's personal copy CH4 and N2O emissions from Spartina alterniflora and Phragmites australis emissions from S. alterniflora with those from a native C3 plant, Phragmites australis, by establishing Elsevier Ltd. All rights reserved. Keywords: Common reed (Phragmites australis); Brackish marsh mesocosms

Chen, Jiquan

85

Physical properties of selected block Argonne Premium bituminous coal related to CO2, CH4, and N2 adsorption  

Science Journals Connector (OSTI)

CO2, CH4, and N2 adsorption and gas-induced swelling were quantified for block Blind Canyon, Pittsburgh #8 and Pocahontas Argonne Premium coals that were dried and structurally relaxed at 75C in vacuum. Strain measurements were made perpendicular and parallel to the bedding plane on ~7נ7נ7mm3 coal blocks and gravimetric sorption measurements were obtained simultaneously on companion coal blocks exposed to the same gaseous environment. The adsorption amount and strain were determined after equilibration at P?1.8MPa. There is a strong non-linear correlation between strain and the quantity of gas adsorbed and the results for all gases and coals studied follow a common pattern. The dependence of the coal matrix shrinkage/swelling coefficient (Cgc) on the type and quantity of gas adsorbed is seen by plotting the ratio between the strain and the adsorbate concentration against the adsorbate concentration. In general, Cgc increases with increasing adsorbate concentration over the range of ~0.1 to 1.4mmol/g. Results from the dried block coals are compared to CO2 experiments using native coals with an inherent level of moisture as received. The amount of CO2 adsorbed using native coals (assuming no displacement of H2O by CO2) is significantly less than the dried coals. The gas-induced strain (S) and adsorption amount (M) were measured as a function of time following step changes in CO2, CH4, and N2 pressure from vacuum to 1.8MPa. An empirical diffusion equation was applied to the kinetic data to obtain the exponent (n) for time dependence for each experiment. The data for all coals were pooled and the exponent (n) evaluated using an ANOVA statistical analysis method. Values for (n) near 0.5 were found to be independent on the coal, the gas or type of measurement (e.g., parallel strain, perpendicular strain, and gas uptake). These data support the use of a Fickian diffusion model framework for kinetic analysis. The kinetic constant k was determined using a unipore diffusion model for each experiment and the data were pooled for ANOVA analysis. For dry coal, statistically significant differences for k were found for the gases (CO2>N2>CH4) and coals (Pocahontas>Blind Canyon>Pittsburgh #8) but not for the method of the kinetic measurement (e.g., strain or gas uptake). For Blind Canyon and Pittsburgh #8 coal, the rate of CO2 adsorption and gas-induced strain for dry coal was significantly greater than that of the corresponding native coal. For Pocahontas coal the rates of CO2 adsorption and gas-induced strain for dry and native coal were indistinguishable and may be related to its low native moisture and minimal amount of created porosity upon drying.

S.R. Kelemen; L.M. Kwiatek

2009-01-01T23:59:59.000Z

86

Bridging Utility Maximization and Regret Minimization  

E-Print Network [OSTI]

We relate the strategies obtained by (1) utility maximizers who use regret to refine their set of undominated strategies, and (2) regret minimizers who use weak domination to refine their sets of regret-minimizing strategies.

Chiesa, Alessandro

2013-12-03T23:59:59.000Z

87

Multi-instanton calculus in N=2 supersymmetric gauge theory. II. Coupling to matter  

Science Journals Connector (OSTI)

We further discuss the N=2 superinstantons in SU(2) gauge theory, obtained from the general self-dual solutions of topological charge n constructed by Atiyah, Drinfeld, Hitchin, and Manin (ADHM). We realize the N=2 supersymmetry algebra as actions on the superinstanton moduli. This allows us to recast in concise superfield notation our previously obtained expression for the exact classical interaction between n ADHM superinstantons mediated by the adjoint Higgs bosons, and, moreover, to incorporate NF flavors of hypermultiplets. We perform explicit one- and two-instanton checks of the Seiberg-Witten prepotentials for all NF and arbitrary hypermultiplet masses. Our results for the low-energy couplings are all in precise agreement with the predictions of Seiberg and Witten except for NF=4, where we find a finite renormalization of the coupling which is absent in the proposed solution.

Nicholas Dorey; Valentin V. Khoze; Michael P. Mattis

1996-12-15T23:59:59.000Z

88

Kinetic Isotope Effects in the N2O Decomposition over NiO  

Science Journals Connector (OSTI)

Kinetic Isotope Effects in the N2O Decomposition over NiO ... The 15N and 18O kinetic isotope effects (KIEs) in the catalytic decomposition of nitrous oxide on NiO powder were determined in the temperature range of 625?825 K, and the following temperature dependencies were found:? KIE(15N) = (0.821 0.180) + (1445 128)/T and KIE(18O) = (1.384 ...

Peter emva; Antonija Lesar; Ivan Kobal; Marjan Senega?nik

2001-04-21T23:59:59.000Z

89

Instanton calculus, topological field theories and N = 2 super Yang-Mills theories  

Science Journals Connector (OSTI)

The results obtained by Seiberg and Witten for N = 2 supersymmetric theories with gauge group SU(2) are in agreement with instanton computations carried out for winding numbers one and two. This suggests that the instanton saddle point saturates the non-perturbative contribution to the functional integral. A natural framework in which corrections to this approximation are absent is given by the topological field theory built out of the N = 2 Super Yang-Mills theory. After extending the standard construction of the Topological Yang-Mills theory to encompass the case of a non-vanishing vacuum expectation value for the scalar field, a BRST transformation is defined (as a supersymmetry plus a gauge variation), which on the instanton moduli space is the exterior derivative. We then show that each non-perturbative contribution to the N = 2 low-energy effective action can be written as the integral of a total derivative of a function of the instanton moduli. Only instanton configurations of zero conformal size contribute to this result.

Diego Bellisai; Francesco Fucito; Gabriele Travaglini; Alessandro Tanzini

2000-01-01T23:59:59.000Z

90

Minimal surfaces bounded by elastic lines  

Science Journals Connector (OSTI)

...117 Minimal surfaces bounded by elastic lines L. Giomi 1 L. Mahadevan 1 2 * * Author...a minimal surface bounded by an elastic line: the Euler-Plateau problem. We use...a minimal surface bounded by an elastic line. The competition between the surface tension...

2012-01-01T23:59:59.000Z

91

Waste minimization in semiconductor processing  

SciTech Connect (OSTI)

The US semiconductor industry uses 5--7 thousand pounds of arsine annually. Fifty to eighty percent of the arsine used becomes a waste product, which requires abatement. Traditional methods of abatement are reviewed with an emphasis on dry chemical scrubbing. A variety of dry chemical scrubbing materials were evaluated for arsine capacity, using activated carbon as the baseline for comparison. Of the available technologies, dry chemical scrubbing is the most effective means of minimizing arsenic containing waste generated from semiconductor effluents. A copper oxide based media has been identified which has high capacity, high efficiency and treats the spectrum of gases used in MOCVD processes. Reclaim and recovery of spent scrubber media has the potential to drastically reduce arsenic waste from semiconductor manufacturing.

Hardwick, S.J.; Mailloux, J.C. [Novapure Corp., Danbury, CT (United States)

1994-12-31T23:59:59.000Z

92

Even spin minimal model holography  

E-Print Network [OSTI]

The even spin W^e_\\infty algebra that is generated by the stress energy tensor together with one Virasoro primary field for every even spin s \\geq 4 is analysed systematically by studying the constraints coming from the Jacobi identities. It is found that the algebra is characterised, in addition to the central charge, by one free parameter that can be identified with the self-coupling constant of the spin 4 field. We show that W^e_\\infty can be thought of as the quantisation of the asymptotic symmetry algebra of the even higher spin theory on AdS_3. On the other hand, W^e_\\infty is also quantum equivalent to the so(N) coset algebras, and thus our result establishes an important aspect of the even spin minimal model holography conjecture. The quantum equivalence holds actually at finite central charge, and hence opens the way towards understanding the duality beyond the leading 't Hooft limit.

Candu, Constantin; Kelm, Maximilian; Vollenweider, Carl

2012-01-01T23:59:59.000Z

93

ORIGINAL PAPER Short-term effect of tillage intensity on N2O and CO2 emissions  

E-Print Network [OSTI]

ORIGINAL PAPER Short-term effect of tillage intensity on N2O and CO2 emissions Pascal Boeckx negative to positive. We studied the short-term effect of tillage intensity on N2O and CO2 emissions. We site, an intermediately aerated Luvisol in Belgium, were similar. Nitrous oxide and CO2 emissions were

Paris-Sud XI, Université de

94

Single-QCL-based absorption sensor for simultaneous trace-gas detection of CH4 and N2O  

E-Print Network [OSTI]

compact multipass gas cell (MGC). This sensor uses a thermoelectrically cooled, continuous wave­8]. A compact mid-infrared absorption spectrometer for N2O and CH4 was developed using thermoelectrically cooled.04 cm-1 ) and N2O (1274.61 cm-1 ) lines at a 1 Hz repetition rate. Wavelength modulation spec- troscopy

95

High resolution measurements of the {sup 241}Am(n,2n) reaction cross section  

SciTech Connect (OSTI)

Measurements of the {sup 241}Am(n,2n) reaction cross section have been performed at the Joint Research Centre (JRC) Geel in the frame of a collaboration between the European Commission (EC) JRC and French laboratories from CNRS and the Commissariat a L'Energie Atomique (CEA) Cadarache. Raw material coming from the Atalante facility of CEA Marcoule has been transformed by JRC Karlsruhe into suitable {sup 241}AmO{sub 2} samples embedded in Al{sub 2}O{sub 3} matrices specifically designed for these measurements. The irradiations were carried out at the 7-MV Van de Graaff accelerator. The {sup 241}Am(n,2n) reaction cross section was determined relative to the {sup 27}Al(n,alpha){sup 24}Na standard cross section. The measurements were performed in four sessions, using quasi-mono-energetic neutrons with energies ranging from 8 to 21 MeV produced via the {sup 2}H(d,n){sup 3}He and the {sup 3}H(d,n){sup 4}He reactions. The induced activity was measured by standard gamma-ray spectrometry using a high-purity germanium detector. Below 15 MeV, the present results are in agreement with data obtained earlier. Above 15 MeV, these measurements allowed the experimental investigation of the {sup 241}Am(n,2n) reaction cross section for the first time. The present data are in good agreement with predictions obtained with the talys code that uses an optical and fission model developed at CEA.

Sage, C. [Commissariat a L'Energie Atomique Saclay, DSM/IRFU/SPhN, F-91191 Gif-sur-Yvette (France); European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Institut Pluridisciplinaire Hubert Curien, F-67037 Strasbourg (France); Semkova, V. [European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia (Bulgaria); Bouland, O. [Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545 (United States); Dessagne, P.; Rudolf, G. [Institut Pluridisciplinaire Hubert Curien, F-67037 Strasbourg (France); Fernandez, A.; Naestren, C.; Ottmar, H.; Somers, J.; Wastin, F. [European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, D-76125 Karlsruhe (Germany); Gunsing, F. [Commissariat a L'Energie Atomique Saclay, DSM/IRFU/SPhN, F-91191 Gif-sur-Yvette (France); Noguere, G. [Commissariat a L'Energie Atomique Cadarache, DEN/CAD/DER/SPRC/LEPh, F-13108 St Paul-lez-Durance (France); Plompen, A. J. M. [European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel (Belgium); Romain, P. [Commissariat a L'Energie Atomique, DAM, DIF, F-91297 Arpajon (France)

2010-06-15T23:59:59.000Z

96

The free energy of N=2 supersymmetric AdS_4 solutions of M-theory  

E-Print Network [OSTI]

We show that general N=2 supersymmetric AdS_4 solutions of M-theory with non-zero M2-brane charge admit a canonical contact structure. The free energy of the dual superconformal field theory on S^3 and the scaling dimensions of operators dual to supersymmetric wrapped M5-branes are expressed via AdS/CFT in terms of contact volumes. In particular, this leads to topological and localization formulae for the coefficient of N^{3/2} in the free energy of such solutions.

Maxime Gabella; Dario Martelli; Achilleas Passias; James Sparks

2011-07-25T23:59:59.000Z

97

Excitation of the C? 3? u state of N2 by electron impact  

Science Journals Connector (OSTI)

The ?=3371 spectral band of the C? 3? u ?B? 3? g (v?=0 v ?=0) second positive system is investigated using time?resolved spectroscopy with electron beam pulse widths of 100 nsec 260 nsec and 5 ?sec. Lifetime data for the v?=0 vibrational level of the C? 3? u electronic state are obtained for incident electron energies and N2 gas pressures in the range 25200 eV and 2380 mtorr respectively. In the case of the 260 nsec electron pulse a single radiative decay component is observed which exhibits a dependence upon electron impact energy. However in the case of a 5 ?sec excitation pulse the resulting radiative decay is observed to consist of two decay components. The short?lived component is identified as the primary C? 3? u state excitation while the long?lived component is identified as the radiative cascade contribution from higher electronic states including possibly the metastable E? 3?+ g state. When the long?lived cascade contribution is subtracted from the total C? 3? u population the C state natural radiative lifetime becomes independent of energy. In addition the lifetime is observed to be independent of N2 gas pressure over the pressure range ?2380 mtorr.

S. T. Chen; Richard J. Anderson

1975-01-01T23:59:59.000Z

98

Density matrix minimization with $\\ell_1$ regularization  

E-Print Network [OSTI]

We propose a convex variational principle to find sparse representation of low-lying eigenspace of symmetric matrices. In the context of electronic structure calculation, this corresponds to a sparse density matrix minimization algorithm with $\\ell_1$ regularization. The minimization problem can be efficiently solved by a split Bergman iteration type algorithm. We further prove that from any initial condition, the algorithm converges to a minimizer of the variational principle.

Rongjie Lai; Jianfeng Lu; Stanley Osher

2014-03-06T23:59:59.000Z

99

Operator-Schmidt decomposition of the quantum Fourier transform on C^N1 tensor C^N2  

E-Print Network [OSTI]

Operator-Schmidt decompositions of the quantum Fourier transform on C^N1 tensor C^N2 are computed for all N1, N2 > 1. The decomposition is shown to be completely degenerate when N1 is a factor of N2 and when N1>N2. The first known special case, N1=N2=2^n, was computed by Nielsen in his study of the communication cost of computing the quantum Fourier transform of a collection of qubits equally distributed between two parties. [M. A. Nielsen, PhD Thesis, University of New Mexico (1998), Chapter 6, arXiv:quant-ph/0011036.] More generally, the special case N1=2^n1<2^n2=N2 was computed by Nielsen et. al. in their study of strength measures of quantum operations. [M.A. Nielsen et. al, (accepted for publication in Phys Rev A); arXiv:quant-ph/0208077.] Given the Schmidt decompositions presented here, it follows that in all cases the communication cost of exact computation of the quantum Fourier transform is maximal.

Jon Tyson

2002-10-13T23:59:59.000Z

100

A Unified Approach for Minimizing Composite Norms  

E-Print Network [OSTI]

May 25, 2010 ... Abstract: We propose a first-order augmented Lagrangian algorithm (FALC) to solve the composite norm minimization problem min...

Necdet Serhat Aybat

2010-05-25T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Minimizing the sulphur content in Kraft lignin.  

E-Print Network [OSTI]

?? The aim of this project is to investigate the possibilities of minimizing the sulphur content in Kraft lignin. Kraft lignin contains about 1.5 to (more)

Svensson, Sara

2008-01-01T23:59:59.000Z

102

Informational Webinar on Bat Impact Minimization Technologies...  

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

in order to address and minimize the regulatory and financial risks associated with wind power development in locations with sensitive bat species. More information about this...

103

Optimization Online - Hankel Matrix Rank Minimization with ...  

E-Print Network [OSTI]

Aug 29, 2012 ... Abstract: We introduce a flexible optimization framework for nuclear norm minimization of matrices with linear structure, including Hankel,...

Maryam Fazel

2012-08-29T23:59:59.000Z

104

GNEP Element:Minimize Nuclear Waste | Department of Energy  

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

Minimize Nuclear Waste GNEP Element:Minimize Nuclear Waste An article describing the ways in which the GNEP plans to minimize nuclear waste. GNEP Element:Minimize Nuclear Waste...

105

Structural Risk Minimization Kernels Support Vector Machines Support Vector Machines  

E-Print Network [OSTI]

Dimensional Spaces Many acceptable solutions bad generalization Structural Risk Minimization Kernels SupportStructural Risk Minimization Kernels Support Vector Machines Support Vector Machines Kernel Methods Structural Risk Minimization Kernels Support Vector Machines 1 Structural Risk Minimization High Dimensional

Kjellström, Hedvig

106

Sustainability for the Global Biofuels Industry Minimizing Risks...  

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

Industry Minimizing Risks and Maximizing Opportunities Sustainability for the Global Biofuels Industry Minimizing Risks and Maximizing Opportunities Conservation International...

107

Composite Self-concordant Minimization Volkan Cevher  

E-Print Network [OSTI]

Composite Self-concordant Minimization Volkan Cevher Laboratory for Information and InferenceTran Dinh Anastasios Kyrillidis Yen-Huan Li Paris 6 Dec 11, 2013 #12;Composite minimization Motivation-the-grid array processing g convex and possibly nonsmooth (P) ·a ·a f convex and smooth #12;Composite

Combettes, Patrick Louis

108

Emissions Minimization Vehicle Routing Problem Miguel Figliozzi  

E-Print Network [OSTI]

. The level of GHG emissions is a proxy for fuel consumption in diesel engines and in the near future, the minimization of emissions and fuel consumption as the primary or secondary objective. This creates a new type, study, and solve a new vehicle routing problem where the minimization of emissions and fuel consumption

109

Aluminum: Principled Scenario Exploration through Minimality  

E-Print Network [OSTI]

Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J. We present Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios

Dougherty, Daniel J.

110

Aluminum: Principled Scenario Exploration through Minimality  

E-Print Network [OSTI]

Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios and backtracking. It also

Krishnamurthi, Shriram

111

Receptor Specificity and Transmission of H2N2 Subtype Viruses Isolated from the Pandemic of 1957  

E-Print Network [OSTI]

Influenza viruses of the H2N2 subtype have not circulated among humans in over 40 years. The occasional isolation of avian H2 strains from swine and avian species coupled with waning population immunity to H2 hemagglutinin ...

Pappas, Claudia

112

Gas?Kinetic Temperature of Planar High?Frequency Capacitive Discharge Plasma in N2/CO2/He Gas Mixtures  

Science Journals Connector (OSTI)

Using methods of emission spectroscopy, we have determined the gas?kinetic temperature fields of planar high?frequency capacitive discharge plasma in N2/CO2/He gas mixtures depending on the excitation frequency, ...

V. V. Azharonok; I. I. Filatova; V. D. Shimanovich

2001-09-01T23:59:59.000Z

113

Line shape in the low-frequency wing of N2 and O2 broadened CO2 lines  

Science Journals Connector (OSTI)

The shape of the far wings of N2 and O2 broadened CO2 lines have been investigated, at room temperature, in the 21402250-cm?1 spectral...

Menoux, V; Le Doucen, R; Boulet, C

1987-01-01T23:59:59.000Z

114

N=2 supersymmetric extension of a hydrodynamic system in Riemann invariants  

SciTech Connect (OSTI)

In this paper, we formulate an N=2 supersymmetric extension of a hydrodynamic-type system involving Riemann invariants. The supersymmetric version is constructed by means of a superspace and superfield formalism, using bosonic superfields, and consists of a system of partial differential equations involving both bosonic and fermionic variables. We make use of group-theoretical methods in order to analyze the extended model algebraically. Specifically, we calculate a Lie superalgebra of symmetries of our supersymmetric model and make use of a general classification method to classify the one-dimensional subalgebras into conjugacy classes. As a result we obtain a set of 401 one-dimensional nonequivalent subalgebras. For selected subalgebras, we use the symmetry reduction method applied to Grassmann-valued equations in order to determine analytic exact solutions of our supersymmetric model. These solutions include traveling waves, bumps, kinks, double-periodic solutions, and solutions involving exponentials and radicals.

Grundland, A. M. [Centre de Recherches Mathematiques, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada); Universite du Quebec, Trois-Rivieres, C.P. 500, Quebec G9A 5H7 (Canada); Hariton, A. J. [Centre de Recherches Mathematiques, Universite de Montreal, C.P. 6128, Succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada)

2009-07-15T23:59:59.000Z

115

Feather-like He plasma plumes in surrounding N2 gas  

Science Journals Connector (OSTI)

Effects of surrounding gases on the propagation of room-temperature atmospheric-pressure plasma jets are reported. A highly unusual feather-like plasma plume is observed only when N2 is used as surrounding gas. The He concentration on the axis at the starting point of the feather-like plume is ?0.85 of the maximum value and is independent on the He flow rates. High-speed optical imaging reveals that dim diffuse plasmas emerge just behind the bright head of the plasma bullet at the starting point of the feather-like plume. These results help tailoring surface exposure in emerging applications of plasma jets in medicine and nanotechnology.

X. P. Lu; Y. Pan; K. Ostrikov

2013-01-01T23:59:59.000Z

116

Large rank Wilson loops in N=2 superconformal QCD at strong coupling  

E-Print Network [OSTI]

We compute the expectation values of circular Wilson loops in large representations at strong coupling, in the large-N limit of the N=2 superconformal theory with SU(N) gauge group and 2N hypermultiplets. Employing Pestun's matrix integral, we focus attention on symmetric and antisymmetric representations with ranks of order N. We find that large rank antisymmetric loops are independent of the coupling at strong 't Hooft coupling while symmetric Wilson loops grow exponentially with it. Symmetric loops display a non-analyticity as a function of the rank, characterized by the splitting of a single matrix model eigenvalue from the continuum, bearing close resemblance to Bose-Einstein condensation in an ideal gas. We discuss implications of these for a putative large-N string dual. The method of calculation we adopt makes explicit the connection to Fermi and Bose gas descriptions and also suggests a tantalizing connection of the above system to a multichannel Kondo model.

Benedict Fraser; S. Prem Kumar

2012-02-28T23:59:59.000Z

117

Effect of Minimal lengths on Electron Magnetism  

E-Print Network [OSTI]

We study the magnetic properties of electron in a constant magnetic field and confined by a isotropic two dimensional harmonic oscillator on a space where the coordinates and momenta operators obey generalized commutation relations leading to the appearance of a minimal length. Using the momentum space representation we determine exactly the energy eigenvalues and eigenfunctions. We prove that the usual degeneracy of Landau levels is removed by the presence of the minimal length in the limits of weak and strong magnetic field.The thermodynamical properties of the system, at high temperature, are also investigated showing a new magnetic behavior in terms of the minimal length.

Khireddine Nouicer

2007-07-13T23:59:59.000Z

118

FAST ALTERNATING LINEARIZATION METHODS FOR MINIMIZING ...  

E-Print Network [OSTI]

Feb 9, 2012 ... The nuclear norm minimization problem, which ... is comparable in cost to computing a subgradient of ?X??, or the gradient of the ... graph by estimating a sparse inverse covariance matrix from sample data by solving the...

2012-02-09T23:59:59.000Z

119

Minimizing Project Risk Through Financing Strategies  

E-Print Network [OSTI]

or eliminate their risks on energy investments. Topics include: 1. procedures for evaluating project risk, 2. strategies to minimize risk, including financing options that transfer risk from the building owner to a third party investor, and 3. guidelines...

Michaelson, M.

120

Waste minimization and pollution prevention awareness plan  

SciTech Connect (OSTI)

The purpose of this plan is to document the Lawrence Livermore National Laboratory (LLNL) Waste Minimization and Pollution Prevention Awareness Program. The plan specifies those activities and methods that are or will be employed to reduce the quantity and toxicity of wastes generated at the site. The intent of this plan is to respond to and comply with (DOE's) policy and guidelines concerning the need for pollution prevention. The Plan is composed of a LLNL Waste Minimization and Pollution Prevention Awareness Program Plan and, as attachments, Program- and Department-specific waste minimization plans. This format reflects the fact that waste minimization is considered a line management responsibility and is to be addressed by each of the Programs and Departments. 14 refs.

Not Available

1991-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Minimizing and exploiting leakage in VLSI  

E-Print Network [OSTI]

reverse body bias voltage to minimize leakage. As the minimum feature size of VLSI fabrication processes continues to shrink with each successive process generation (along with the value of supply voltage and therefore the threshold voltage of the devices...

Jayakumar, Nikhil

2009-05-15T23:59:59.000Z

122

Data-based estimates of suboxia, denitrification, and N2O production in the ocean and their sensitivities to dissolved O2  

E-Print Network [OSTI]

pathways, N2O is a powerful greenhouse gas that affects the Earth's energy balance and climate. The ocean

123

The Parisi formula has a unique minimizer  

E-Print Network [OSTI]

In 1979, G. Parisi predicted a variational formula for the thermodynamic limit of the free energy in the Sherrington-Kirkpatrick model and described the role played by its minimizer. This formula was verified in the seminal work of Talagrand and later generalized to the mixed p-spin models by Panchenko. In this paper, we prove that the minimizer in Parisi's formula is unique at any temperature and external field by establishing the strict convexity of the Parisi functional.

Antonio Auffinger; Wei-Kuo Chen

2014-02-20T23:59:59.000Z

124

Impact of Prior Seasonal H3N2 Influenza Vaccination or Infection on Protection and Transmission of Emerging Variants of Influenza A(H3N2)v Virus in Ferrets  

Science Journals Connector (OSTI)

...Emerging Variants of Influenza A(H3N2)v Virus in Ferrets Katherine V. Houser a b Melissa B. Pearce a Jacqueline M. Katz a Terrence...infection. J. Virol. 75 :5141-5150. 21. Harvey, R , JX Wheeler, CL Wallis, JS Robertson, and OG Engelhardt. 2008. Quantitation...

Katherine V. Houser; Melissa B. Pearce; Jacqueline M. Katz; Terrence M. Tumpey

2013-10-02T23:59:59.000Z

125

Structural Risk Minimization Kernels Support Vector Machines Support Vector Machines  

E-Print Network [OSTI]

Dimensional Spaces Many acceptable solutions #12;Structural Risk Minimization Kernels Support Vector Machines High Dimensional Spaces Many acceptable solutions bad generalization #12;Structural Risk MinimizationStructural Risk Minimization Kernels Support Vector Machines Support Vector Machines Kernel Methods

Kjellström, Hedvig

126

Waste minimization necessary for solving wastewater problems  

SciTech Connect (OSTI)

Developing and implementing waste minimization procedures to correct the wastewater treatment problem are not as simple as identifying the problem. People cannot solve today's problems with the same kind of thinking that caused the problems. Nonetheless, industry primarily is using traditional treatment technologies to reduce wastewater. most companies are upgrading their wastewater treatment plants and installing treatment equipment in process areas whenever technically and economically feasible. The solution to ensuring wastewater compliance is recycling, waste minimization and moving toward zero discharge. Treating wastewater to the best possible quality still creates residual waste that must be disposed. In addition, regulatory limits continue to increase. Although some facilities can close and have closed the loop in certain processes, industry is pursuing waste minimization and the goal of zero discharge, given existing technology and economics. This, companies must taken an innovative approach to reducing wastewater volume and toxicity at the source.

Melody, M.

1993-07-01T23:59:59.000Z

127

Sustainability for the Global Biofuels Industry: Minimizing Risks...  

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

Sustainability for the Global Biofuels Industry: Minimizing Risks and Maximizing Opportunities Webinar Transcript Sustainability for the Global Biofuels Industry: Minimizing Risks...

128

Global Nuclear Energy Partnership Fact Sheet - Minimize Nuclear...  

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

Minimize Nuclear Waste Global Nuclear Energy Partnership Fact Sheet - Minimize Nuclear Waste GNEP will increase the efficiency in the management of used nuclear fuel, also known as...

129

New Report States That Hydrokinetic Turbines Have Minimal Environmenta...  

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

Report States That Hydrokinetic Turbines Have Minimal Environmental Impacts on Fish New Report States That Hydrokinetic Turbines Have Minimal Environmental Impacts on Fish August...

130

Sustainability for the Global Biofuels Industry: Minimizing Risks...  

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

* Assess impact on land and resource use, biodiversity * Minimize water consumption, air pollution, and waste * Maximize efficiency * Minimize GHG emissions * Avoid negative...

131

Boltzmann Equation Analysis of Electron Transport in a N2O2 Streamer Discharge Sasa Dujko1;2;3  

E-Print Network [OSTI]

Boltzmann Equation Analysis of Electron Transport in a N2­O2 Streamer Discharge Sasa Dujko1;2;3?, P. O. Box 68, Zemun, Belgrade 11080, Serbia 3 ARC Centre for Antimatter­Matter Studies, School of the reduced electric field. The fluid model is coupled with the Monte Carlo model via a model interface

Ebert, Ute

132

Ann. Polon. Math., 95, N2, (2009), 135-139. A DSM proof of surjectivity of monotone  

E-Print Network [OSTI]

Ann. Polon. Math., 95, N2, (2009), 135-139. 1 #12;A DSM proof of surjectivity of monotone nonlinear. The proof is based on the Dynamical Systems Method (DSM). MSC: 47A52 Key words: dynamical systems method of this result. It is based on the Dynamical Systems Method (DSM) developed in [2]. Theorem 1.1. Assume that F

133

Jeffrey R. Row Environment and Resource Studies, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1  

E-Print Network [OSTI]

, N2L 3G1 Website: http://jeffrow.ca · Email: jeff.row@me.com · Phone: 1-416-399-3066 1 Education 2006 and population structure of foxsnakes across spatial and temporal scales. 2003-2005 M.Sc. Biology, University (Lampropeltis triangulum). 1997-2001 B.Sc. Environmental Biology, Queen's University, Kingston, Ontario. 2

Row, Jeffrey R.

134

The role of N2O derived from crop-based biofuels, and from agriculture in general, in Earth's climate  

Science Journals Connector (OSTI)

...The role of N2O derived from crop-based biofuels, and from agriculture in general, in Earth's...factor (EF) of 3-5%, and applied it to biofuel production. For first-generation biofuels, e.g. biodiesel from rapeseed and bioethanol...

2012-01-01T23:59:59.000Z

135

N2O emission from a combined ex-situ nitrification and in-situ denitrification bioreactor landfill  

Science Journals Connector (OSTI)

Abstract A combined process comprised of ex-situ nitrification in an aged refuse bioreactor (designated as A bioreactor) and in-situ denitrification in a fresh refuse bioreactor (designated as F bioreactor) was constructed for investigating N2O emission during the stabilization of municipal solid waste (MSW). The results showed that N2O concentration in the F bioreactor varied from undetectable to about 130ppm, while it was much higher in the A bioreactor with the concentration varying from undetectable to about 900ppm. The greatly differences of continuous monitoring of N2O emission after leachate cross recirculation in each period were primarily attributed to the stabilization degree of MSW. Moreover, the variation of N2O concentration was closely related to the leachate quality in both bioreactors and it was mainly affected by the COD and COD/TN ratio of leachate from the F bioreactor, as well as the DO, ORP, and NO3?-N of leachate from the A bioreactor.

Ya-nan Wang; Ying-jie Sun; Lei Wang; Xiao-jie Sun; Hao Wu; Rong-xing Bian; Jing-jing Li

2014-01-01T23:59:59.000Z

136

UNIVERSITY OF CALIFORNIA, SAN DIEGO Continuous Measurements of Atmospheric Ar/N2 as a Tracer of  

E-Print Network [OSTI]

........................... 31 2.3 Results ................................................. 34 2.3.1 Comparison of station measurements and model predictions ....................... 34 2.3.2 Station-station comparisons ........................................... 74 #12;v 3.2 The seasonal cycle in (Ar/N2): A transient model of air-sea gas flux

Keeling, Ralph

137

Minimal Residual Disease in Chronic Myeloid Leukemia  

Science Journals Connector (OSTI)

...treatment with chemotherapy. In a hematologic complete remission, we know that a large portion of the leukemic cells remain out of sight. These cells, invisible to the microscopist, are the components of an important clinical problem termed "minimal residual disease." The concept of minimal residual disease... For many years hematologists have used the microscope to identify a complete remission of leukemia after treatment with chemotherapy. In a hematologic complete remission, we know that a large portion of the leukemic cells remain out of sight. These cells, ...

Lwenberg B.

2003-10-09T23:59:59.000Z

138

From Jack polynomials to minimal model spectra  

E-Print Network [OSTI]

In this note, a deep connection between free field realisations of conformal field theories and symmetric polynomials is presented. We give a brief introduction into the necessary prerequisites of both free field realisations and symmetric polynomials, in particular Jack symmetric polynomials. Then we combine these two fields to classify the irreducible representations of the minimal model vertex operator algebras as an illuminating example of the power of these methods. While these results on the representation theory of the minimal models are all known, this note exploits the full power of Jack polynomials to present significant simplifications of the original proofs in the literature.

David Ridout; Simon Wood

2014-09-17T23:59:59.000Z

139

Free Parameters and Frameworks in Minimal Supersymmetry  

E-Print Network [OSTI]

405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coe#cients of the ``soft

California at Berkeley, University of

140

Free Parameters and Frameworks in Minimal Supersymmetry  

E-Print Network [OSTI]

405 Appendix A Free Parameters and Frameworks in Minimal Supersymmetry It is useful to discuss what the various schemes that exist for reducing the set of free parameters to a manageable number. The information, and so is fixed by experiment. The free parameters consist mainly of the coefficients of the "soft

California at Berkeley, University of

Note: This page contains sample records for the topic "n2 purged minimal" 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

Minimizing incomplete automata Marie-Pierre Beal  

E-Print Network [OSTI]

Minimizing incomplete automata Marie-Pierre B´eal Maxime Crochemore March 17, 2008 Abstract We-Monge, 77454 Marne-la-Vall´ee Cedex 2, France. beal@univ-mlv.fr King's College London, Strand, London WC2R 2LS

Paris-Sud XI, Université de

142

Minimizing local automata Marie-Pierre Beal  

E-Print Network [OSTI]

Minimizing local automata Marie-Pierre B´eal Institut Gaspard-Monge University of Marne-la-Vall´ee, CNRS 77454 Marne-la-Vall´ee Cedex 2, France beal@univ-mlv.fr Maxime Crochemore Institut Gaspard

Boyer, Edmond

143

Energy Minimization Accelerated with FPGAs Thesis submitted in partial fulfillment  

E-Print Network [OSTI]

implementation for that part of the computation. iv #12;Contents 1 Introduction 1 1.1 What is Energy Minimization between Energy Minimization and Molecular Dynamics . . . . 7 2.3 Content of Energy Minimization Terms' & $ % Energy Minimization Accelerated with FPGAs Huaxin Dai Thesis submitted in partial

Herbordt, Martin

144

Determination of the cross sections of (n,2n), (n,gamma) nuclear reactions on germanium isotopes at the energy of neutrons 13.96 MeV  

E-Print Network [OSTI]

The cross sections of 70Ge(n,2n)69Ge, 72Ge(n,2n)71Ge, 76Ge(n,gamma)77(g+0.21m)Ge, 76Ge(n,2n)75Ge nuclear reactions were measured at the energy of neutrons 13.96(6) MeV by activation method with gamma-ray and X-ray spectra studies.

S. V. Begun; O. G. Druzheruchenko; O. O. Pupirina; V. K. Tarakanov

2007-01-23T23:59:59.000Z

145

Analyses spectroscopiques d'un plasma CO2-N2 (97%-3%), de type atmosphre martienne, par torche ICP  

E-Print Network [OSTI]

Analyses spectroscopiques d'un plasma CO2-N2 (97%-3%), de type atmosphère martienne, par torche ICP couplage inductif, fonctionnant à la pression atmosphérique, est utilisée pour créer un plasma à partir d Electrique et Plasmas Thermiques, CNRS, 24 Av. des Landais, F63177 Aubière cedex,France, (2) Laboratoire d

Boyer, Edmond

146

Guide to Minimizing Compress-based Cooling  

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

Guide to Minimizing Guide to Minimizing Compressor-based Cooling in Data Centers Prepared for the U.S. Department of Energy Federal Energy Management Program By: Lawrence Berkeley National Laboratory Author: William Tschudi May 2013 2 Contacts William Tschudi Lawrence Berkeley National Laboratory One Cyclotron Road, 90R3111 Berkeley, California 94720 510-495-2417 wftschudi@lbl.gov For more information on FEMP, please contact: Will Lintner, P.E. Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. S.W. Washington, D. C. 20585-0121 202.586.3120 william.lintner@ee.doe.gov Cover photo: Center for Disease Control and Prevention's Arlen Specter Headquarters and Operations Center reached LEED Silver rating through sustainable design and operations that decrease energy consumption by 20%

147

N=2 supersymmetric a=4-Korteweg-de Vries hierarchy derived via Gardner's deformation of Kaup-Boussinesq equation  

SciTech Connect (OSTI)

We consider the problem of constructing Gardner's deformations for the N=2 supersymmetric a=4-Korteweg-de Vries (SKdV) equation; such deformations yield recurrence relations between the super-Hamiltonians of the hierarchy. We prove the nonexistence of supersymmetry-invariant deformations that retract to Gardner's formulas for the Korteweg-de Vries (KdV) with equation under the component reduction. At the same time, we propose a two-step scheme for the recursive production of the integrals of motion for the N=2, a=4-SKdV. First, we find a new Gardner's deformation of the Kaup-Boussinesq equation, which is contained in the bosonic limit of the superhierarchy. This yields the recurrence relation between the Hamiltonians of the limit, whence we determine the bosonic super-Hamiltonians of the full N=2, a=4-SKdV hierarchy. Our method is applicable toward the solution of Gardner's deformation problems for other supersymmetric KdV-type systems.

Hussin, V. [Departement de Mathematiques et de Statistique, Universite de Montreal, C.P. 6128, succ. Centre-ville, Montreal, Quebec H3C 3J7 (Canada); Kiselev, A. V. [Mathematical Institute, University of Utrecht, P.O. Box 80.010, 3508 TA Utrecht (Netherlands); Krutov, A. O. [Department of Higher Mathematics, Ivanovo State Power University, 34 Rabfakovskaya str., Ivanovo 153003 (Russian Federation); Wolf, T. [Department of Mathematics, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1 (Canada)

2010-08-15T23:59:59.000Z

148

An algorithm for minimization of quantum cost  

E-Print Network [OSTI]

A new algorithm for minimization of quantum cost of quantum circuits has been designed. The quantum cost of different quantum circuits of particular interest (eg. circuits for EPR, quantum teleportation, shor code and different quantum arithmetic operations) are computed by using the proposed algorithm. The quantum costs obtained using the proposed algorithm is compared with the existing results and it is found that the algorithm has produced minimum quantum cost in all cases.

Anindita Banerjee; Anirban Pathak

2009-10-12T23:59:59.000Z

149

Waste Minimization: A Hidden Energy Savings?  

E-Print Network [OSTI]

WASTE MINIMIZATION: A HIDDEN ENERGY SAVINGS? R. 1. GOOD Principal Engineer, Environmental Protection and Energy Union Carbide Chemicals & Plastics Company, Inc. Seadrift, Texas ABSTRACT Several changes in the last few years have forced a re...-examination of waste generation within the petro chemical industry. In today's political/regulatory arena, industrial waste, both hazardous and non hazardous, has become an extreme potential liability in handling, storing, and disposal. Traditional methods...

Good, R. L.; Hunt, K. E.

150

Apply process integration to waste minimization  

SciTech Connect (OSTI)

This article presents a systematic method for identifying process modifications to minimize waste generation. It is based on the hierarchical decision procedure, which provides a framework for identifying process improvement options and evaluating heat and mass integration opportunities. The article deals specifically with an adaptation of the hierarchical decision approach for use in pollution abatement applications. The article also illustrates the use of the technique by applying it to the fluid catalytic cracking unit at Amoco Oil Co.'s Yorktown, VA, refinery.

Rossiter, A.P.; Spriggs, H.D. (Linnhoff March, Inc., Leesburg, VA (United States)); Klee, H. Jr. (Amoco Corp., Chicago, IL (United States))

1993-01-01T23:59:59.000Z

151

Influence of propane on CO2/CH4 and N2/CH4 separations in CHA zeolite membranes  

Science Journals Connector (OSTI)

Abstract Two types of CHA zeolite membranes (SAPO-34, SSZ-13) were used for CO2/CH4, N2/CH4, and CO2/i-butane separations at both low (270 and 350kPa) and high (1.73MPa) pressures. The SSZ-13 membranes were more selective, with CO2/CH4 separation selectivities as high as 280 and N2/CH4 separation selectivities of 12 at 270kPa feed pressure. For both types of membranes, selectivities and permeances decreased as the feed pressure increased. The CO2/i-butane separation selectivities were greater than 500,000 for SAPO-34 membranes, indicating extremely low densities of defects because i-butane is too large to enter the CHA pores. The CO2/i-butane selectivities were smaller for SSZ-13 membranes (2,80020,000), in part because the SSZ-13 layer was on the outside of the porous mullite tubes and sealing the membrane on the zeolite surface was more difficult than for the SAPO-34 membranes that were grown on the inside of glazed alumina tubes. Propane, in feed concentrations from 1 to 9%, significantly influenced separations by decreasing permeances in most cases. The effect was larger for N2/CH4 than for CO2/CH4 mixtures, apparently because the more strongly-adsorbing CO2 competes better than N2 with propane for adsorption sites. Although propane caused permeances to decrease significantly over time, selectivities decreased much less. Propane decreased permeances more for SAPO-34 membranes than for SSZ-13 membranes at 350kPa, and at high pressure propane even increased CO2 permeances and decreased CH4 permeances in SSZ-13 membranes, thus significantly increasing CO2/CH4 selectivities. Propane permeances reached steady state relatively quickly because its permeation was mostly through defects, but CO2, N2, and CH4 permeances did not stabilize in the presence of propane, even after seven days. The effects of propane were reversible when it was removed from the feed and the membranes were heated.

Ting Wu; Merritt C. Diaz; Yihong Zheng; Rongfei Zhou; Hans H. Funke; John L. Falconer; Richard D. Noble

2015-01-01T23:59:59.000Z

152

Fusion Algebras of Logarithmic Minimal Models  

E-Print Network [OSTI]

We present explicit conjectures for the chiral fusion algebras of the logarithmic minimal models LM(p,p') considering Virasoro representations with no enlarged or extended symmetry algebra. The generators of fusion are countably infinite in number but the ensuing fusion rules are quasi-rational in the sense that the fusion of a finite number of representations decomposes into a finite direct sum of representations. The fusion rules are commutative, associative and exhibit an sl(2) structure but require so-called Kac representations which are reducible yet indecomposable representations of rank 1. In particular, the identity of the fundamental fusion algebra is in general a reducible yet indecomposable Kac representation of rank 1. We make detailed comparisons of our fusion rules with the results of Gaberdiel and Kausch for p=1 and with Eberle and Flohr for (p,p')=(2,5) corresponding to the logarithmic Yang-Lee model. In the latter case, we confirm the appearance of indecomposable representations of rank 3. We also find that closure of a fundamental fusion algebra is achieved without the introduction of indecomposable representations of rank higher than 3. The conjectured fusion rules are supported, within our lattice approach, by extensive numerical studies of the associated integrable lattice models. Details of our lattice findings and numerical results will be presented elsewhere. The agreement of our fusion rules with the previous fusion rules lends considerable support for the identification of the logarithmic minimal models LM(p,p') with the augmented c_{p,p'} (minimal) models defined algebraically.

Jorgen Rasmussen; Paul A. Pearce

2007-07-21T23:59:59.000Z

153

Minimal model for spoof acoustoelastic surface states  

SciTech Connect (OSTI)

Similar to textured perfect electric conductors for electromagnetic waves sustaining artificial or spoof surface plasmons we present an equivalent phenomena for the case of sound. Aided by a minimal model that is able to capture the complex wave interaction of elastic cavity modes and airborne sound radiation in perfect rigid panels, we construct designer acoustoelastic surface waves that are entirely controlled by the geometrical environment. Comparisons to results obtained by full-wave simulations confirm the feasibility of the model and we demonstrate illustrative examples such as resonant transmissions and waveguiding to show a few examples of many where spoof elastic surface waves are useful.

Christensen, J., E-mail: jochri@fotonik.dtu.dk; Willatzen, M. [Department of Photonics Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby (Denmark); Liang, Z. [College of Electronic Science and Technology, Shenzhen University, Shenzhen (China)

2014-12-15T23:59:59.000Z

154

Dimensionality-induced insulator-metal crossover in layered nickelates La{sub n+1}Ni{sub n}O{sub 2n+2} (n = 2, 3, and ?)  

SciTech Connect (OSTI)

Low-valence layered nickelates are a structural analog to the superconducting cuprates and possess interesting properties. In this work, we have systematically studied the electronic structure of La{sub n+1}Ni{sub n}O{sub 2n+2} using first-principles calculations. Our results reveal that the Ni-3d 3z{sup 2} ? r{sup 2} orbital state is active and evolves from discrete molecular levels to a continuous solid band and its filling varies as the dimensionality (or n) increases. The two-dimensional (2D) La{sub 3}Ni{sub 2}O{sub 6} and La{sub 4}Ni{sub 3}O{sub 8} are thus found to have a molecular insulating state. In contrast, the 3D LaNiO{sub 2} is metallic and its 3z{sup 2} ? r{sup 2} band surprisingly becomes 3D due to the Ni-La hybridization, and the La-5d xy orbital also forms a 2D metallic band. Therefore, La{sub n+1}Ni{sub n}O{sub 2n+2} is a dimensionality-controlled insulator-metal crossover system.

Liu, Ting; Jia, Ting; Zhang, Xiaoli [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)] [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Wu, Hua, E-mail: wuh@fudan.edu.cn [Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of physics, Fudan University, Shanghai 200433 (China)] [Laboratory for Computational Physical Sciences (MOE), State Key Laboratory of Surface Physics, and Department of physics, Fudan University, Shanghai 200433 (China); Zeng, Zhi, E-mail: zzeng@theory.issp.ac.cn [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China) [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China); Lin, H. Q. [Beijing Computational Science Research Center, Beijing 100084 (China)] [Beijing Computational Science Research Center, Beijing 100084 (China); Li, X. G. [Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)] [Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026 (China)

2014-04-15T23:59:59.000Z

155

The Disilane Chromophore:? Photoelectron and Electronic Spectra of Hexaalkyldisilanes and 1,(n+2)-Disila[n.n.n]propellanes  

Science Journals Connector (OSTI)

The Disilane Chromophore:? Photoelectron and Electronic Spectra of Hexaalkyldisilanes and 1,(n+2)-Disila[n.n.n]propellanes ... Related information can be gleaned from results11-15 for the parent disilane, Si2H6. ... 18 A synthesis of an unusual tricyclic disilane with approximately eclipsed Si?C bonds, 1,6-disila[4.4.4]propellane (4, Chart 1), was reported in 1971,19 and the authors noted that its absorption maximum is significantly red-shifted relative to that of 1. ...

Deborah L. Casher; Hayato Tsuji; Atsushi Sano; Martins Katkevics; Akio Toshimitsu; Kohei Tamao; Mari Kubota; Tsunetoshi Kobayashi; C. Henrik Ottosson; Donald E. David; Josef Michl

2003-05-01T23:59:59.000Z

156

Electron-Transfer Collisions of Low-Energy Multicharged Nitrogen-Ions with H-2 and N-2  

E-Print Network [OSTI]

PHYSICAL REVIEW A VOLUME 36, NUMBER 9 NOVEMBER 1, 1987 Electron-transfer collisions of low-energy multicharged nitrogen ions with H2 and N2 Hua-Ying Wang and D. A. Church Department of Physics, Texas A&M University, College Station, Texas 77843... collision provides a direct and valuable test of a recent calculation 36 4261 1987 The American Physical Society 4262 HUA-YING WANG AND P. A. CHURCH 36 by Gargaud and Mccarroll, ' and the other measure- ments provide insight into the electron transfer...

Wang, H. Y.; Church, David A.

1987-01-01T23:59:59.000Z

157

Minimal Bell-Kochen-Specker proofs with POVMs on qubits  

E-Print Network [OSTI]

There are many different definitions of what a Bell-Kochen-Specker proof with POVMs might be. Here we present and discuss the minimal proof on qubits for three of these definitions and show that they are indeed minimal.

A. A. Methot

2005-09-28T23:59:59.000Z

158

Minimal Proton Channel Enables H2 Oxidation and Production with...  

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

Minimal Proton Channel Enables H2 Oxidation and Production with a Water-Soluble Nickel-Based Catalyst. Minimal Proton Channel Enables H2 Oxidation and Production with a...

159

The train fueling cost minimization problem with fuzzy fuel prices  

Science Journals Connector (OSTI)

The train fueling cost minimization problem is to find a scheduling and fueling strategy such that the fueling cost is minimized and no train runs out of fuel. Since fuel prices vary by location and time from mon...

Xiang Li; Chen-Fu Chien; Lixing Yang

2014-06-01T23:59:59.000Z

160

Sustainability for the Global Biofuels Industry: Minimizing Risks...  

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

Opportunities Sustainability for the Global Biofuels Industry: Minimizing Risks and Maximizing Opportunities Introduction slides for the webinar describing bioenergy and...

Note: This page contains sample records for the topic "n2 purged minimal" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Support minimized inversion of acoustic and elastic wave scattering  

SciTech Connect (OSTI)

This report discusses the following topics on support minimized inversion of acoustic and elastic wave scattering: Minimum support inversion; forward modelling of elastodynamic wave scattering; minimum support linearized acoustic inversion; support minimized nonlinear acoustic inversion without absolute phase; and support minimized nonlinear elastic inversion.

Safaeinili, A.

1994-04-24T23:59:59.000Z

162

What Energy Functions Can Be Minimized via Graph Cuts?  

E-Print Network [OSTI]

What Energy Functions Can Be Minimized via Graph Cuts? Vladimir Kolmogorov, Member, IEEE, and Ramin been developed to solve energy minimization problems in computer vision. Each of these techniques constructs a graph such that the minimum cut on the graph also minimizes the energy. Yet, because these graph

Field, David

163

Accretions of Dark Matter and Dark Energy onto ($n+2$)-dimensional Schwarzschild Black Hole and Morris-Thorne Wormhole  

E-Print Network [OSTI]

We have studied accretion of the dark matter and dark energy onto of $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole. The mass and the rate of change of mass for $(n+2)$-dimensional Schwarzschild black hole and Morris-Thorne wormhole have been found. We have assumed some candidates of dark energy like holographic dark energy, new agegraphic dark energy, quintessence, tachyon, DBI-essence, etc. The black hole mass and the wormhole mass have been calculated in term of redshift when dark matter and above types of dark energies accrete onto them separately. We have shown that the black hole mass increases and wormhole mass decreases for holographic dark energy, new agegraphic dark energy, quintessence, tachyon accretion and the slope of increasing/decreasing of mass sensitively depends on the dimension. But for DBI-essence accretion, the black hole mass first increases and then decreases and the wormhole mass first decreases and then increases and the slope of increasing/decreasing of mass not sensitively depends on the dimension.

Ujjal Debnath

2015-02-08T23:59:59.000Z

164

Beamline 5.4.1  

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

5.4.1 5.4.1 Beamline 5.4.1 Print Infrared spectromicroscopy GENERAL BEAMLINE INFORMATION Operational 2011 Source characteristics Bend magnet Energy range 0.07-1.25 eV Frequency range 600 - 10,000 cm-1 Interferometer resolution 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution; reflection, transmission, and attenuated total reflectance (ATR) modes; polarizing and UV fluorescence optics Spatial resolution Diffraction limited (~wavelength) Detectors Probably MCT-A*, MCT-B (mercury cadmium telluride) Spot size at sample 2-10 µm (diffraction-limited) Sample preparation Biological preparation equipment available including incubator, biohoods, prep table, and more TBD. Sample environment N2 purged, minimal clean area (no particle specification), microcryostat/heater stages available for 4.2-730 K

165

Beamline 5.4.1  

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

1 Print 1 Print Infrared spectromicroscopy GENERAL BEAMLINE INFORMATION Operational 2011 Source characteristics Bend magnet Energy range 0.07-1.25 eV Frequency range 600 - 10,000 cm-1 Interferometer resolution 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution; reflection, transmission, and attenuated total reflectance (ATR) modes; polarizing and UV fluorescence optics Spatial resolution Diffraction limited (~wavelength) Detectors Probably MCT-A*, MCT-B (mercury cadmium telluride) Spot size at sample 2-10 µm (diffraction-limited) Sample preparation Biological preparation equipment available including incubator, biohoods, prep table, and more TBD. Sample environment N2 purged, minimal clean area (no particle specification), microcryostat/heater stages available for 4.2-730 K

166

Beamline 5.4.1  

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

1 Print 1 Print Infrared spectromicroscopy GENERAL BEAMLINE INFORMATION Operational 2011 Source characteristics Bend magnet Energy range 0.07-1.25 eV Frequency range 600 - 10,000 cm-1 Interferometer resolution 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution; reflection, transmission, and attenuated total reflectance (ATR) modes; polarizing and UV fluorescence optics Spatial resolution Diffraction limited (~wavelength) Detectors Probably MCT-A*, MCT-B (mercury cadmium telluride) Spot size at sample 2-10 µm (diffraction-limited) Sample preparation Biological preparation equipment available including incubator, biohoods, prep table, and more TBD. Sample environment N2 purged, minimal clean area (no particle specification), microcryostat/heater stages available for 4.2-730 K

167

Beamline 5.4.1  

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

1 Print 1 Print Infrared spectromicroscopy GENERAL BEAMLINE INFORMATION Operational 2011 Source characteristics Bend magnet Energy range 0.07-1.25 eV Frequency range 600 - 10,000 cm-1 Interferometer resolution 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution; reflection, transmission, and attenuated total reflectance (ATR) modes; polarizing and UV fluorescence optics Spatial resolution Diffraction limited (~wavelength) Detectors Probably MCT-A*, MCT-B (mercury cadmium telluride) Spot size at sample 2-10 µm (diffraction-limited) Sample preparation Biological preparation equipment available including incubator, biohoods, prep table, and more TBD. Sample environment N2 purged, minimal clean area (no particle specification), microcryostat/heater stages available for 4.2-730 K

168

Beamline 5.4.1  

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

1 Print 1 Print Infrared spectromicroscopy GENERAL BEAMLINE INFORMATION Operational 2011 Source characteristics Bend magnet Energy range 0.07-1.25 eV Frequency range 600 - 10,000 cm-1 Interferometer resolution 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution; reflection, transmission, and attenuated total reflectance (ATR) modes; polarizing and UV fluorescence optics Spatial resolution Diffraction limited (~wavelength) Detectors Probably MCT-A*, MCT-B (mercury cadmium telluride) Spot size at sample 2-10 µm (diffraction-limited) Sample preparation Biological preparation equipment available including incubator, biohoods, prep table, and more TBD. Sample environment N2 purged, minimal clean area (no particle specification), microcryostat/heater stages available for 4.2-730 K

169

Beamline 5.4.1  

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

1 Print 1 Print Infrared spectromicroscopy GENERAL BEAMLINE INFORMATION Operational 2011 Source characteristics Bend magnet Energy range 0.07-1.25 eV Frequency range 600 - 10,000 cm-1 Interferometer resolution 0.125 cm-1 Endstations FTIR bench and IR microscope (N2 purged) Characteristics Computerized sample stage, 0.1-micron resolution; reflection, transmission, and attenuated total reflectance (ATR) modes; polarizing and UV fluorescence optics Spatial resolution Diffraction limited (~wavelength) Detectors Probably MCT-A*, MCT-B (mercury cadmium telluride) Spot size at sample 2-10 µm (diffraction-limited) Sample preparation Biological preparation equipment available including incubator, biohoods, prep table, and more TBD. Sample environment N2 purged, minimal clean area (no particle specification), microcryostat/heater stages available for 4.2-730 K

170

Analyzing the Trade-offs Between Minimizing Makespan and Minimizing Energy Consumption in a Heterogeneous Resource Allocation Problem  

E-Print Network [OSTI]

Analyzing the Trade-offs Between Minimizing Makespan and Minimizing Energy Consumption@engr.colostate.edu, wcoliver@rams.colostate.edu, HJ@colostate.edu, aam@colostate.edu Abstract--The energy consumption of data their energy consumption while maintaining a high level of performance. Minimizing energy consumption while

Maciejewski, Anthony A.

171

Wormholes minimally violating the null energy condition  

E-Print Network [OSTI]

We consider novel wormhole solutions supported by a matter content that minimally violates the null energy condition. More specifically, we consider an equation of state in which the sum of the energy density and radial pressure is proportional to a constant with a value smaller than that of the inverse area characterising the system, i.e., the area of the wormhole mouth. This approach is motivated by a recently proposed cosmological event, denoted "the little sibling of the big rip", where the Hubble rate and the scale factor blow up but the cosmic derivative of the Hubble rate does not [1]. By using the cut-and-paste approach, we match interior spherically symmetric wormhole solutions to an exterior Schwarzschild geometry, and analyze the stability of the thin-shell to linearized spherically symmetric perturbations around static solutions, by choosing suitable properties for the exotic material residing on the junction interface radius. Furthermore, we also consider an inhomogeneous generalisation of the eq...

Bouhmadi-Lopez, Mariam; Martin-Moruno, Prado

2014-01-01T23:59:59.000Z

172

On how nanomechanical systems can minimize dissipation  

E-Print Network [OSTI]

Information processing machines at the nanoscales are unavoidably affected by thermal fluctuations. Efficient design requires understanding how nanomachines can operate at minimal energy dissipation. In this letter we focus on mechanical systems controlled by smoothly varying potential forces. We show that optimal control equations come about in a natural way if the energy cost to manipulate the potential is taken into account. When such cost becomes negligible, the optimal control strategy can be constructed by transparent geometrical methods and recovers the solution of optimal mass transport equations in the overdamped limit. Our equations are equivalent to hierarchies of kinetic equations of a form well-known in the theory of dilute gases. From our results, optimal strategies for energy efficient nanosystems may be devised

Paolo Muratore-Ginanneschi; Kay Schwieger

2014-08-22T23:59:59.000Z

173

Electrochimica Acta 53 (2008) 63376343 Contents lists available at ScienceDirect  

E-Print Network [OSTI]

situations, gas purge serves to avoid or minimize various types of material degradation in a fuel cell stack April 2008 Keywords: Automotive fuel cells Gas purge Water removal High-frequency resistance Experimental a b s t r a c t Gas purge intended to minimize residual water in a polymer electrolyte fuel cell

174

The discovery of [Ru(NH3)5N2]2+: A case of serendipity and the scientific method  

Science Journals Connector (OSTI)

In this paper the author provides a personal account of the events leading up to the realization [Ru9NH3)5N2]2+ is a real species.

Caesar V. Senoff

1990-01-01T23:59:59.000Z

175

Study on the mechanism of the catalytic conversion of NO x and soot into N2 and CO2 on Fe2O3 in diesel exhaust  

Science Journals Connector (OSTI)

The present study deals with the mechanism of the conversion of NO x and soot into N2 and CO2 on Fe2O3 catalyst. The results of TPO, TRM, DRIFTS and HRTEM examinations suggest a...

H. Bockhorn; S. Kureti; D. Reichert

2007-05-01T23:59:59.000Z

176

Effect of Inoculation with N2-Fixing Spirilla and Azotobacter on Nitrogenase Activity on Roots of Maize Grown Under Subtropical Conditions  

Science Journals Connector (OSTI)

...such as photosynthetic efficiency, trans- VOL. 38...Cairo University, Giza, Egypt, 1967). fixation necessarily...University, Cairo, Egypt. LITERATURE CITED 1...N2-fixing Spirillum in Egypt. Nonsymbiotic Nitrogen...Seminar on Biological Solar Energy Conversion Sys- tems...

N. A. Hegazi; M. Monib; K. Vlassak

1979-10-01T23:59:59.000Z

177

Corrosion mitigation of N-(2-hydroxy-3-trimethyl ammonium)propyl chitosan chloride as inhibitor on mild steel  

Science Journals Connector (OSTI)

Abstract The biopolymer N-(2-hydroxy-3-trimethyl ammonium)propyl chitosan chloride (HTACC) was synthesised and its influence as a novel corrosion inhibitor on mild steel in 1M \\{HCl\\} was studied using gravimetric and electrochemical experiments. The compound obtained was characterised using FTIR and NMR studies. The inhibition efficiency increased with the increase in concentration and reached a maximum of 98.9% at 500ppm concentration. Polarisation studies revealed that HTACC acts both as anodic and cathodic inhibitor. Electrochemical impedance studies confirmed that the inhibition is through adsorption on the metal surface. The extent of inhibition exhibits a negative trend with increase in temperature. Langmuir isotherm provides the best description on the adsorption nature of the inhibitor. SEM analysis indicated the presence of protective film formed by the inhibitor on the metal surface.

Y. Sangeetha; S. Meenakshi; C. SairamSundaram

2015-01-01T23:59:59.000Z

178

The rate of carbonic acid decomposition in sea water and its oceanographic significance  

E-Print Network [OSTI]

Compressed Air Purging . . . . . . . . , . . 58 15 L6 Carbon-14 Uptake by ~la ~nas sp. in a Closed System, under 4f Carbon Dioxide Gas Purging and under N Gas Purging using Low pH Sea Water . C b -V, Uptk by~Mt ~~lt ik Cl System and under N2 Gas... and under Nitrogen Gas Purging and 4$ Carbon Dioxide Purging, using low pH Sea Water . . . . . . . . . . . . . . . . . , 63 12 Carbon-14 Uptake by Nitzuhia closterium in a Closed System and under Nitrogen Gas Purging . 1v PREFATORY' NOTE The author...

Park, Kilho

1957-01-01T23:59:59.000Z

179

A thermodynamic model for calculating nitrogen solubility, gas phase composition and density of the N2H2ONaCl system  

Science Journals Connector (OSTI)

A thermodynamic model is presented to calculate N2 solubility in pure water (273590K and 1600bar) and aqueous NaCl solutions (273400K, 1600bar and 06molkg?1) with or close to experimental accuracy. This model is based on a semi-empirical equation used to calculate gas phase composition of the H2ON2 system and a specific particle interaction theory for liquid phase. With the parameters evaluated from N2H2ONaCl system and using a simple approach, the model is extended to predict the N2 solubility in seawater accurately. Liquid phase density of N2H2ONaCl system at phase equilibrium and the homogenization pressure of fluid inclusions containing N2H2ONaCl can be calculated from this model. A computer code is developed for this model and can be downloaded from the website: www.geochem-model.org/programs.htm.

Shide Mao; Zhenhao Duan

2006-01-01T23:59:59.000Z

180

Seesaw Models with Minimal Flavor Violation  

E-Print Network [OSTI]

We explore realizations of minimal flavor violation (MFV) for leptons in the simplest seesaw models where the neutrino mass generation mechanism is driven by new fermion singlets (type I) or triplets (type III) and by a scalar triplet (type II). We also discuss similarities and differences of the MFV implementation among the three scenarios. To study the phenomenological implications, we consider a number of effective dimension-six operators that are purely leptonic or couple leptons to the standard-model gauge and Higgs bosons and evaluate constraints on the scale of MFV associated with these operators from the latest experimental information. Specifically, we employ the most recent measurements of neutrino mixing parameters as well as the currently available data on flavor-violating radiative and three-body decays of charged leptons, mu -> e conversion in nuclei, the anomalous magnetic moments of charged leptons, and their electric dipole moments. The most stringent lower-limit on the MFV scale comes from the present experimental bound on mu -> e gamma and can reach 500 TeV or higher, depending on the details of the seesaw scheme. With our numerical results, we illustrate some important differences among the seesaw types. Particularly, we show that in types I and III there are features which can bring about potentially remarkable effects which do not occur in type II. In addition, we comment on how one of the new effective operators can induce flavor-changing dilepton decays of the Higgs boson.

Xiao-Gang He; Chao-Jung Lee; Jusak Tandean; Ya-Juan Zheng

2015-01-27T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Linearized Functional Minimization for Inverse Modeling  

SciTech Connect (OSTI)

Heterogeneous aquifers typically consist of multiple lithofacies, whose spatial arrangement significantly affects flow and transport. The estimation of these lithofacies is complicated by the scarcity of data and by the lack of a clear correlation between identifiable geologic indicators and attributes. We introduce a new inverse-modeling approach to estimate both the spatial extent of hydrofacies and their properties from sparse measurements of hydraulic conductivity and hydraulic head. Our approach is to minimize a functional defined on the vectors of values of hydraulic conductivity and hydraulic head fields defined on regular grids at a user-determined resolution. This functional is constructed to (i) enforce the relationship between conductivity and heads provided by the groundwater flow equation, (ii) penalize deviations of the reconstructed fields from measurements where they are available, and (iii) penalize reconstructed fields that are not piece-wise smooth. We develop an iterative solver for this functional that exploits a local linearization of the mapping from conductivity to head. This approach provides a computationally efficient algorithm that rapidly converges to a solution. A series of numerical experiments demonstrates the robustness of our approach.

Wohlberg, Brendt [Los Alamos National Laboratory; Tartakovsky, Daniel M. [University of California, San Diego; Dentz, Marco [Institute of Environmental Assessment and Water Research, Barcelona, Spain

2012-06-21T23:59:59.000Z

182

Minimizing or eliminating refueling of nuclear reactor  

DOE Patents [OSTI]

Demand for refueling of a liquid metal fast nuclear reactor having a life of 30 years is eliminated or reduced to intervals of at least 10 years by operating the reactor at a low linear-power density, typically 2.5 kw/ft of fuel rod, rather than 7.5 or 15 kw/ft, which is the prior art practice. So that power of the same magnitude as for prior art reactors is produced, the volume of the core is increased. In addition, the height of the core and it diameter are dimensioned so that the ratio of the height to the diameter approximates 1 to the extent practicable considering the requirement of control and that the pressure drop in the coolant shall not be excessive. The surface area of a cylinder of given volume is a minimum if the ratio of the height to the diameter is 1. By minimizing the surface area, the leakage of neutrons is reduced. By reducing the linear-power density, increasing core volume, reducing fissile enrichment and optimizing core geometry, internal-core breeding of fissionable fuel is substantially enhanced. As a result, core operational life, limited by control worth requirements and fuel burnup capability, is extended up to 30 years of continuous power operation.

Doncals, Richard A. (Washington, PA); Paik, Nam-Chin (Pittsburgh, PA); Andre, Sandra V. (Hempfield Township, Westmoreland County, PA); Porter, Charles A. (Rostraver Township, Westmoreland County, PA); Rathbun, Roy W. (Greensburg, PA); Schwallie, Ambrose L. (Greensburg, PA); Petras, Diane S. (Penn Township, Westmoreland County, PA)

1989-01-01T23:59:59.000Z

183

Minimizing energy losses in control valves  

SciTech Connect (OSTI)

The pulp and paper industry uses massive amounts of energy, but it could reduce its electricity consumption by about 2,000 MW worldwide by simply optimizing the pumping of process liquids. Wasted pumping power can be significantly reduced by sizing pumps and control valves more accurately, and by using new methods of pump and valve selection. Combining the improved control valve's installed flow characteristic with state-of-the-art sizing and simulation programs ensures minimal pressure drop across the control valve without loss of accurate and reliable control in all process conditions. If accurate process condition information is available at the planning stage, even more significant pumping energy savings can be achieved. Moreover, reduced pressure drop across the control valve reduces the likelihood of valve cavitation. This, in turn, reduces the need for noise attenuation, preventing cavitation erosion, and repairing damage. To make the most of the advantages gained by using highly developed control valve sizing and selection programs, closer cooperation between process licensees, process users, and valve manufacturers is also required.

Niemela, I.; Pyotsia, J. (Neles-Jamesbury Oy, Helsinki (Finland))

1994-08-01T23:59:59.000Z

184

On the Global Optimality for Linear Constrained Rank Minimization ...  

E-Print Network [OSTI]

Nov 10, 2014 ... Abstract: The rank minimization with linear equality constraints has two closely related models, the low rank approximation model, that is to find...

Xin Liu

2014-11-10T23:59:59.000Z

185

Nuclear norm minimization for the planted clique and biclique ...  

E-Print Network [OSTI]

Jan 21, 2009 ... We write both problems as matrix-rank minimization and then relax them using the nuclear norm. This technique, which may be regarded as a...

2009-01-21T23:59:59.000Z

186

On Minimizing the Energy Consumption of an Electrical Vehicle  

E-Print Network [OSTI]

Apr 20, 2011 ... The problem that we focus on, is the minimization of the energy consumption of an electrical vehicle achievable on a given driving cycle.

Abdelkader Merakeb

2011-04-20T23:59:59.000Z

187

The ppg256 Series of Minimal Poetry Generators  

E-Print Network [OSTI]

J. 1984. A Travesty Generator for Micros. In BYTE 9 (12):afterthought. Minimal poetry generators, however, constituteon larger-scale poetry generators, can clearly benefit from

Montfort, Nick

2009-01-01T23:59:59.000Z

188

Optimization Online - Nuclear norm minimization for the planted ...  

E-Print Network [OSTI]

Jan 21, 2009 ... Nuclear norm minimization for the planted clique and biclique problems. Brendan Ames(bpames ***at*** math.uwaterloo.ca) Stephen...

Brendan Ames

2009-01-21T23:59:59.000Z

189

Geothermal: Sponsored by OSTI -- Ways to Minimize Water Usage...  

Office of Scientific and Technical Information (OSTI)

Ways to Minimize Water Usage in Engineered Geothermal Systems Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About...

190

Minimizing Lubricant-Ash Requirement and Impact on Emission Aftertreat...  

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

Lubricant-Ash Requirement and Impact on Emission Aftertreatment Systems via an Oil Conditioning Filter Minimizing Lubricant-Ash Requirement and Impact on Emission...

191

Minimizers of the magnetic Ginzburg-Landau functional in simply ...  

E-Print Network [OSTI]

Aug 17, 2009 ... We study the minimizers of the Ginzburg-Landau free energy ...... [8] E. B. Bogomol'nyi, The stability of classical solutions, Soviet J. Nuclear...

2009-08-17T23:59:59.000Z

192

Rigid Holography and Six-Dimensional N=(2,0) Theories on AdS_5 times S^1  

E-Print Network [OSTI]

Field theories on anti-de Sitter (AdS) space can be studied by realizing them as low-energy limits of AdS vacua of string/M theory. In an appropriate limit, the field theories decouple from the rest of string/M theory. Since these vacua are dual to conformal field theories (CFTs), this relates some of the observables of these field theories on AdS to a subsector of the dual CFTs. We exemplify this `rigid holography' by studying in detail the 6d N=(2,0) A_{K-1} superconformal field theory (SCFT) on AdS_5xS^1, with equal radii for AdS_5 and for S^1. We choose specific boundary conditions preserving sixteen supercharges that arise when this theory is embedded into Type IIB string theory on AdS_5xS^5/Z_K. On R^{4,1}xS^1, this 6d theory has a 5(K-1)-dimensional moduli space, with unbroken 5d SU(K) gauge symmetry at (and only at) the origin. On AdS_5xS^1, the theory has a 2(K-1)-dimensional `moduli space' of supersymmetric configurations. We argue that in this case the SU(K) gauge symmetry is unbroken everywhere in...

Aharony, Ofer; Rey, Soo-Jong

2015-01-01T23:59:59.000Z

193

Transformation pathways in high-pressure solid nitrogen: from molecular N$_2$ to polymeric cg-N  

E-Print Network [OSTI]

The transition pathway in high-pressure solid nitrogen from N$_2$ molecular state to polymeric cg-N phase was investigated by means of \\textit{ab initio} molecular dynamics and metadynamics simulations. In our study, we observed a transformation mechanism from molecular $Immm$ phase initiated by formation of $trans$-$cis$ chains. These chains further connected within layers and formed a chain-planar state, which we describe as a mixture of crystalline $trans$-$cis$ chain phase and $planar$ phase (both with $Pnma$ symmetry). This form appeared in molecular dynamics performed at 120 GPa and 1500 K and also in metadynamics run at 110 GPa and 1500 K, in which the chains continued to reorganize further and finally formed cg-N. During various other metadynamics runs, two different phases emerged - molecular $P2_1/c$ and two-three-coordinated chain-like $Cm$. The transformation mechanism leading to cg-N may be characterized as a progressive polymerization process passing throughout several intermediate states of var...

Plaienka, Dusan

2014-01-01T23:59:59.000Z

194

Influence of operating conditions and coal properties on \\{NOx\\} and N2O emissions in pressurized fluidized bed combustion of subbituminous coals  

Science Journals Connector (OSTI)

This experimental study is aimed at finding effects of operating conditions in PFBC on nitrogen oxide emissions for subbituminous coals differing in ash content/composition, combustion/gasification reactivities and in particle size distribution. The experiments have been done on a smaller laboratory apparatus with ID=8 cm. The effects of operating pressure (0.11 MPa), temperature of the fluidized bed (800900 C), freeboard temperature and oxygen concentration (310vol.%) on the nitrogen oxides emissions are relatively complex, coupled with temperature of burning coal particles. The coal ash content/composition (esp. CaO and Fe2O3) and fly ash freeboard concentration play an important role in formation/destruction chemistry of both NO and N2O. The \\{NOx\\} emissions decrease with increasing operating pressure at the same volumetric oxygen concentration and temperature. Temperature, volatile content, reactivities of coals and ash composition are the most important factors for N2O emissions. The N2O emissions are either almost constant or can exhibit a maximum at increasing operating pressure. Influence of increasing oxygen concentration on \\{NOx\\} and N2O emissions is more pronounced at lower operating pressures, esp. for the less reactive, medium ash coal. The particle size distribution of the coal (influence of coal dust) can cause characteristic changes in \\{NOx\\} and N2O emissions in PFBC, esp. at lower combustion temperatures (800840 C). The emission changes are dependent on ash properties/composition.

Karel Svoboda; Michael Poho?el

2004-01-01T23:59:59.000Z

195

European Journal of Soil Science, December 2010, 61, 903913 doi: 10.1111/j.1365-2389.2009.01217.x Towards an agronomic assessment of N2O emissions  

E-Print Network [OSTI]

Towards an agronomic assessment of N2O emissions: a case study for arable crops J . W . V a n G r o e n i. Commonly, N2O emissions are expressed as a function of N application rate. This suggests that smaller fertilizer applications always lead to smaller N2O emissions. Here we argue that, because of global demand

van Kessel, Chris

196

Coding-based Energy Minimization for Phase Change Memory  

E-Print Network [OSTI]

-1-4503-1199-1/12/06 ...$10.00. states of the phase-change material. In one state, the ma- terial is amorphous with a highCoding-based Energy Minimization for Phase Change Memory Azalia Mirhoseini Electrical and Computer Phase Change Memory write energy. Our method minimizes the energy required for memory rewrites

197

Spontaneous CP violation in the NexttoMinimal  

E-Print Network [OSTI]

Spontaneous CP violation in the Next­to­Minimal Supersymmetric Standard Model Thesis submitted CP violation within the Next­to­ Minimal Supersymmetric Standard Model (NMSSM). The study of the violation of the CP symmetry is relevant for several reasons. The origin of CP symmetry violation observed

Low, Robert

198

Minimal thinness with respect to symmetric Levy processes Renming Song  

E-Print Network [OSTI]

of [27] was a necessary condition for minimal thinness of a Borel subset E of the half-space H Rd, d 2: If E is minimally thin in H (with respect to the process X) at the point z = 0, then EB(0,1) |x|-d dx NRF) grant funded by the Korea

Song, Renming

199

Task Scheduling and Voltage Selection for Energy Minimization  

E-Print Network [OSTI]

system con gurations. 1. INTRODUCTION Energy consumption has become a primary concern in today's ICTask Scheduling and Voltage Selection for Energy Minimization Yumin Zhang Synopsys, Inc. 700 East-phase framework that inte- grates task assignment, ordering and voltage selection VS together to minimize energy

Hu, Xiaobo Sharon

200

What Energy Functions can be Minimized via Graph Cuts?  

E-Print Network [OSTI]

What Energy Functions can be Minimized via Graph Cuts? Vladimir Kolmogorov and Ramin Zabih Computer. In the last few years, several new algorithms based on graph cuts have been developed to solve energy cut on the graph also minimizes the energy. Yet because these graph constructions are complex

Field, David

Note: This page contains sample records for the topic "n2 purged minimal" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

The minimal number of generators of an invertible ideal  

E-Print Network [OSTI]

The minimal number of generators of an invertible ideal Bruce Olberding1 and Moshe Roitman2 1 New of an integral ideal). We denote the minimal number of generators of an ideal I of R by R(I). If R is a Dedekind ideal I; moreover, I is strongly 2- generated, in the sense that one of the generators can

Olberding, Bruce

202

Joint Power-Delay Minimization in Green Wireless Access Networks  

E-Print Network [OSTI]

, adapting power consumption to traffic load [3] or devising intelligent network deployment strategies using an optimization problem that jointly minimizes the power consumption of the network and the sum of data unitJoint Power-Delay Minimization in Green Wireless Access Networks Farah Moety, Samer Lahoud, Kinda

Paris-Sud XI, Université de

203

LOCAL AND GLOBAL MINIMIZERS FOR A VARIATIONAL ENERGY  

E-Print Network [OSTI]

LOCAL AND GLOBAL MINIMIZERS FOR A VARIATIONAL ENERGY INVOLVING A FRACTIONAL NORM GIAMPIERO of the minimizers of the energy functional u 2 Hs() + W(u) dx, where u Hs() denotes the total contribution from References 38 2010 Mathematics Subject Classification. Primary 82B26, 49J45; Secondary 49Q20. Key words

Savin, Ovidiu

204

Controllers with Minimal Observation Power (Application to Timed Systems)  

E-Print Network [OSTI]

Controllers with Minimal Observation Power (Application to Timed Systems) Peter Bulychev1 , Franck is the computation of a subset of predicates sufficient for control and whose cost is minimal. Our solution avoids, Danish-Chinese Center for Cyber Physical Systems (IDEA4CPS) and VKR Center of Excellence MT-LAB. #12;The

David, Alexandre

205

Waste Minimization and Pollution Prevention | Department of Energy  

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

Waste Minimization Waste Minimization and Pollution Prevention Waste Minimization and Pollution Prevention Mission The team supports efforts that promote a more sustainable environment and implements pollution prevention activities in accordance with Executive Order (EO) 13423, Strengthening Federal Environmental, Energy, and Transportation Management, and EO 13514, Federal Leadership in Environmental, Energy, and Economic Performance, as approved by LM. The WM/P2 Team advocates environmentally sound waste minimization and pollution prevention practices. Scope Inventory the waste stream. Prevent or reduce pollution and waste at their source. Recycle. Use recycled-content products. Use less toxic or nontoxic products. Key Expectations Monitor and track progress on metrics. Maintain/implement a plan that integrates waste minimization and

206

Analysis of insulation characteristics of c-C4F8 and N2 gas mixtures by the Monte Carlo method  

Science Journals Connector (OSTI)

The motion of electrons in c-C4F8 and N2 gas mixtures for a pulsed Townsend discharge is simulated by the Monte Carlo method. The effective ionization coefficient, , over the E/N range from 160 to 480?Td is calculated by employing a set of cross sections available in the literature. From the variation curve of with the C4F8 mixture ratio k, the limiting field of the gas mixture at different gas content is determined. The required gas pressure ratios comparable with the insulation property of SF6 and GWP at this gas pressure were also investigated. It is found that the insulation characteristics of the N2 and c-C4F8 gas mixtures are comparable with the N2 and SF6 mixture, but the GWP of the former is significantly lower than that of the latter. Simulation results show excellent agreement with experimental data available in the literature.

Bian-Tao Wu; Deng-Ming Xiao; Zhang-Sheng Liu; Liu-Chun Zhang; Xue-Li Liu

2006-01-01T23:59:59.000Z

207

SUMBMISSION TO TPAMI: OOI EXTRACTION BY LOCAL-GLOBAL ENERGY MINIMIZATION 1 Iterative local-global energy minimization for  

E-Print Network [OSTI]

SUMBMISSION TO TPAMI: OOI EXTRACTION BY LOCAL-GLOBAL ENERGY MINIMIZATION 1 Iterative local-global energy minimization for automatic extraction of object of interest Gang Hua, Member, IEEE, Zicheng Liu are with the Department of Electrical Engineering and Computer Science, Northwest- ern University, 2145 Sheridan Road

Wu, Ying

208

A common intermediate for N2 formation in enzymes and zeolites: side-on Cu-nitrosyl complexes  

SciTech Connect (OSTI)

Understanding the mechanisms of catalytic processes requires the identification of reaction centers and key intermediates, both of which are often achieved by the use of spectroscopic characterization tools. Due to the heterogeneity of active centers in heterogeneous catalysts, it is frequently difficult to identify the specific sites that are responsible for the overall activity. Furthermore, the simultaneous presence of a large number of surface species on the catalyst surface often poses a great challenge for the unambiguous determination of the relevant species in the reaction mechanism. In contrast, enzymes possess catalytically active centers with precisely defined coordination environments that are only able to accommodate intermediates relevant to the specific catalytic process. Here we show that side-on Cu+-NO+ complexes characterized by high magnetic field solid state magic angle spinning nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopies are the key intermediates in the selective catalytic reduction of NO over Cu-SSZ-13 zeolite catalysts. Analogous intermediates have been observed and characterized in nitrite reductase enzymes, and shown to be the critical intermediates in the formation of N2 for anaerobic ammonium oxidation reactions.[1] The identification of this key reaction intermediate, combined with the results of our prior kinetic studies, allows us to propose a new reaction mechanism for the selective catalytic reduction of NO with NH3 under oxygen-rich environments over Cu-SSZ-13 zeolites, a key reaction in automotive emission control. The authors acknowledge the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy/Vehicle Technologies Program for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOEs Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle Memorial Institute.

Kwak, Ja Hun; Lee, Jong H.; Burton, Sarah D.; Lipton, Andrew S.; Peden, Charles HF; Szanyi, Janos

2013-09-16T23:59:59.000Z

209

Hydrogen atom in momentum space with a minimal length  

E-Print Network [OSTI]

A momentum representation treatment of the hydrogen atom problem with a generalized uncertainty relation,which leads to a minimal length ({\\Delta}X_{i})_{min}= \\hbar \\sqrt(3{\\beta}+{\\beta}'), is presented. We show that the distance squared operator can be factorized in the case {\\beta}'=2{\\beta}. We analytically solve the s-wave bound-state equation. The leading correction to the energy spectrum caused by the minimal length depends on \\sqrt{\\beta}. An upper bound for the minimal length is found to be about 10^{-9} fm.

Djamil Bouaziz; Nourredine Ferkous

2010-09-05T23:59:59.000Z

210

Usage of FTIR for Detection of Isotopicaly Labeled N2O Emitted from Soil D. Harush, A. Shaviv, R. Linker and Y. Dubowski*  

E-Print Network [OSTI]

the emissions of water soluble or gaseous pollutants. Nitrous oxide (N2O), a well-known greenhouse gas. Linker and Y. Dubowski* Faculty of Civil and Environmental Engineering, Technion, Haifa, Israel Nitrogen, is an intermediate nitrogen species of the denitrification process and a by-product of nitrification. The various

Simon, Emmanuel

211

Potentials of Silver and Gold Electrodes of ZrO2-Based Cells in N2+ O2+ CO2+ CO Gas Mixtures  

Science Journals Connector (OSTI)

Steady-state electrode potentials in cells with a ZrO2+ 10 mol % Y2O3electrolyte are measured at 400 to 500C in nonequilibrium N2+ O2+ CO2+ CO gas mixtures containing 03 and 010 vol % of CO and O2, respectivel...

G. I. Fadeev; I. D. Remez

2001-05-01T23:59:59.000Z

212

---Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041201/kyodo/d86n2bdg0.html  

E-Print Network [OSTI]

- - -Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041201/kyodo/d86n2bdg0.html Thursday Reserved. - - -Privacy Policy Terms of Service Community Help 12/1/04 8:49 PMFrance confident of U.S., S

213

Supersaturated N2O in a perennially ice-covered Antarctic lake: Molecular and stable isotopic evidence for a biogeochemical relict  

E-Print Network [OSTI]

Supersaturated N2O in a perennially ice-covered Antarctic lake: Molecular and stable isotopic Abstract The east lobe of Lake Bonney, a permanently ice-covered lake in the McMurdo Dry Valleys2O was produced via incomplete nitrification and has undergone virtually no subsequent consumption

Priscu, John C.

214

Optical Nonlinearity in Ar and N2 near the Ionization Threshold J. K. Wahlstrand, Y.-H. Cheng, Y.-H. Chen, and H. M. Milchberg  

E-Print Network [OSTI]

Optical Nonlinearity in Ar and N2 near the Ionization Threshold J. K. Wahlstrand, Y.-H. Cheng, Y measure the nonlinear optical response in argon and nitrogen in a thin gas target to laser intensities.103901 PACS numbers: 42.65.An, 42.65.Jx, 42.65.Re The optical Kerr effect, the intensity-dependent refrac

Milchberg, Howard

215

GTRI's Convert Program: Minimizing the Use of Highly Enriched Uranium |  

National Nuclear Security Administration (NNSA)

Program: Minimizing the Use of Highly Enriched Uranium | Program: Minimizing the Use of Highly Enriched Uranium | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > GTRI's Convert Program: Minimizing the Use of ... Fact Sheet GTRI's Convert Program: Minimizing the Use of Highly Enriched Uranium Apr 12, 2013

216

HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear  

National Nuclear Security Administration (NNSA)

HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear Security Summit: Fact Sheet | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Fact Sheets > HEU Minimization and the Reliable Supply of ... Fact Sheet HEU Minimization and the Reliable Supply of Medical Isotopes Nuclear

217

Effective Fouling Minimization Increases the Efficiency and Productivity of Refineries  

Broader source: Energy.gov [DOE]

This factsheet details a project to improve operating procedures, including physical and chemical methods and the use of high-temperature coatings, to allow refineries to operate equipment below threshold fouling conditions and use the most effective minimization techniques.

218

Complete Embedded Minimal Surfaces of Finite Total David Hoffman  

E-Print Network [OSTI]

Complete Embedded Minimal Surfaces of Finite Total Curvature David Hoffman Department-5300 Bonn, Germany July 18, 1994 Contents 1 Introduction 2 2 Basic theory and the global Weierstrass representation 4 2.1 Finite total curvature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2

219

Optimal Placement of Wind Power Plants for Delivery Loss Minimization  

Science Journals Connector (OSTI)

In this chapter we investigate how to minimize power delivery losses in the distribution system on ... We show that strategically placing and utilizing new wind power plants can lead to significant loss reduction...

Masoud Honarvar Nazari

2013-01-01T23:59:59.000Z

220

A UNIFIED APPROACH FOR MINIMIZING COMPOSITE NORMS 1 ...  

E-Print Network [OSTI]

We propose a first-order augmented Lagrangian algorithm (FALC) to solve the composite norm minimization problem min. X?Rmn. 1 ?(F(X) ? G)? + 2 C(X)

2012-08-06T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Provably minimal energy using coordinated DVS and power gating  

Science Journals Connector (OSTI)

Both energy and execution speed can be greatly impacted by clock and power gating, nonlinear voltage scaling, and leakage energy. We address the problem of coordinated power gating and dynamic voltage scaling (DVS) to minimize the overall energy consumption ...

Nathaniel A. Conos; Saro Meguerdichian; Foad Dabiri; Miodrag Potkonjak

2014-03-01T23:59:59.000Z

222

Trends and Opportunities in Industrial Hazardous Waste Minimization  

E-Print Network [OSTI]

This paper describes trends and opportunities in Resource Conservation and Recovery Act hazardous waste minimization. It uses U.S. Environmental Protection Agency data gathered since 1989 from over 20,000 facilities that account for almost all...

Atlas, M.

223

Wastewater minimization in industrial applications: Challenges and solutions  

SciTech Connect (OSTI)

The impetus for waste minimization and water recycle in the metal processing industry comes from increasingly stringent environmental regulations and dwindling water supplies. Tougher discharge permits often dictate additional wastewater treatments, which can make water recycle and waste minimization an attractive option. The most challenging part in the design of a water recycle system is to minimize the capital and operating costs while meeting the water quality requirements of the process. Computer simulation of water recycle alternatives provides: (1) ``expected`` water chemistry, (2) steady-state mass and energy balance for the plant water system, (3) performance of the water treatments considered in the water recycle scheme, and (4) relative economics based on capital and operating costs. The computer simulation study recommends the best wastewater recycle scheme based on economics and technical merits. Benefits of a computer simulation study in the design of water recycle and wastewater minimization processes are illustrated by a case study in the metal processing industry.

Dave, B.B. [Nalco Chemical Co., Naperville, IL (United States)

1998-12-31T23:59:59.000Z

224

Minimizing electricity costs with an auxiliary generator using stochastic programming  

E-Print Network [OSTI]

This thesis addresses the problem of minimizing a facility's electricity costs by generating optimal responses using an auxiliary generator as the parameter of the control systems. The-goal of the thesis is to find an ...

Rafiuly, Paul, 1976-

2000-01-01T23:59:59.000Z

225

Structural Genomics of Minimal Organisms: Pipeline and Results  

E-Print Network [OSTI]

of Minimal Organisms: Pipeline and Results Sung-Hou Kim*,~500 genes, respectively). Pipeline: To achieve our mission,determination. Over all pipeline schemes for the single-path

Kim, Sung-Hou

2008-01-01T23:59:59.000Z

226

Annual Waste Minimization Summary Report, Calendar Year 2008  

SciTech Connect (OSTI)

This report summarizes the waste minimization efforts undertaken by National Security Technologies, LLC (NSTec), for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO), during calendar year 2008.

NSTec Environmental Management

2009-02-01T23:59:59.000Z

227

Flexible Elastoresistive Tactile Sensor for Minimally Invasive Surgery  

Science Journals Connector (OSTI)

In minimally invasive surgery, tactile feedback is lacking. An elastoresistive tactile sensor is designed to feel inside the body of the patient. The sensor is thin, flexible, robust, cheap, and has a simple s...

Pauwel Goethals; Mauro M. Sette

2008-01-01T23:59:59.000Z

228

An alternative derivation of the Minimal massive 3D gravity  

E-Print Network [OSTI]

By using the algebra of exterior forms and the first order formalism with constraints, an alternative derivation of the field equations for the Minimal massive 3D gravity model is presented.

Ahmet Baykal

2014-08-22T23:59:59.000Z

229

Minimal thinness with respect to symmetric Levy processes Renming Song  

E-Print Network [OSTI]

of [27] was a necessary condition for minimal thinness of a Borel subset E of the half-space H Rd , d 2: If E is minimally thin in H (with respect to the process X) at the point z = 0, then EB(0,1) |x|-d dx. In the classical case this was proved in [4] for d = 2 and in [17] for d 3. The method applied in [27] was based

Vondraèek, Zoran

230

Hydrogen-atom spectrum under a minimal-length hypothesis  

E-Print Network [OSTI]

The energy spectrum of the Coulomb potential with minimal length commutation relations $[X_i, P_j] = i\\hbar\\{\\delta_{ij}(1+\\beta P^2) + \\beta'P_iP_j\\}$ is determined both numerically and perturbatively for arbitrary values of $\\beta'/\\beta$ and angular momenta $\\ell$. The constraint on the minimal length scale from precision hydrogen spectroscopy data is of order of a few GeV$\

Sandor Benczik; Lay Nam Chang; Djordje Minic; Tatsu Takeuchi

2005-07-08T23:59:59.000Z

231

Waste Minimization- The Challenge of the 90's  

E-Print Network [OSTI]

W~STE MINIMIZATION - THE CHALLENGE OF THE 90'S RICHARD DURHAM Senior Environmental Specialist Dow Chemical U.S.A. Plaquemine, Louisiana ABSTRACT Waste minimization is an environmental good news story that Dow enjoys going out... informally for years. The chemical industry has been practicing waste reduction by increasing yields, improving their processes and reducing energy requirements. If Dow or any other chemical company does not practice waste reduction, competition...

Durham, R.

232

Minimal Index Surface Subgroups of Noneuclidean Crystallographic Groups  

Science Journals Connector (OSTI)

......group G has the presentation with generators c10, cu, c20, c2U eu e2, and relators c2 lQ, c2 n, c\\Q, c\\x, (cwcu...El (2/-1,2/), (fl-l)/2 f(c2k-ul)=f(c2U))= n (2/,2/ + l), forl^A:^2r, >=' f{e2k-x......

Milagros Izquierdo

1993-09-01T23:59:59.000Z

233

Flare System Optimization  

E-Print Network [OSTI]

be minimally the flare manufacturer's total recommended flow. For systems with a liquid seal, the purge gas should be added downstream of the seal or designed to continuously flow through the seal at a low pressure. Excessive purge gas should not be added... problems with incorrect purge gas rates include: o Not knowing the correct purge rate o Missing restriction orifices o Improperly sized restriction orifices o Improper flow meter settings o Improperly set pressure regulators o Improper valve...

Aegerter, R.

234

Two-phase Cryogenic Avalanche Detectors with THGEM and hybrid THGEM/GEM multipliers operated in Ar and Ar+N2  

E-Print Network [OSTI]

Two-phase Cryogenic Avalanche Detectors (CRADs) with GEM and THGEM multipliers have become an emerging potential technique for charge recording in rare-event experiments. In this work we present the performance of two-phase CRADs operated in Ar and Ar+N2. Detectors with sensitive area of 10x10 cm2, reaching a litre-scale active volume, yielded gains of the order of 1000 with a double-THGEM multiplier. Higher gains, of about 5000, have been attained in two-phase Ar CRADs with a hybrid triple-stage multiplier, comprising of a double-THGEM followed by a GEM. The performance of two-phase CRADs in Ar doped with N2 (0.1-0.6%) yielded faster signals and similar gains compared to the operation in two-phase Ar. The applicability to rare-event experiments is discussed.

A. Bondar; A. Buzulutskov; A. Dolgov; A. Grebenuk; E. Shemyakina; A. Sokolov; D. Akimov; A. Breskin; D. Thers

2012-10-02T23:59:59.000Z

235

Measurements of linestrengths, N2-, Ar-, He- and self-broadening coefficients of acetylene in the ?4+?5 combination band using a cw quantum cascade laser  

Science Journals Connector (OSTI)

Abstract Linestrengths, N2-, Ar-, He- and self-broadening coefficients of acetylene have been measured at 296K in the P branch of the ?4+?5 combination band for 25 rotational transitions. The effect of gas temperature is studied over 296683K for five transitions to allow the determination of the temperature dependent exponent n for N2- and Ar-broadening coefficients. These measurements were performed using a continuous-wave quantum cascade laser (cw-QCL) operating over 12531310cm?1. Spectroscopic parameters were obtained by fitting absorption spectra using Voigt, Galatry and Rautian profiles. Linestrength and broadening results are compared with previous studies available in literature for the ?4+?5 combination band and other vibrational bands of acetylene.

Muhammad Bilal Sajid; Et-touhami Es-sebbar; Aamir Farooq

2014-01-01T23:59:59.000Z

237

The retrieval of vertical profiles of chlorine source gases and N2O5 from MIPAS-B-92 limb emission spectra  

SciTech Connect (OSTI)

During the European Arctic Stratospheric Ozone Experiment (EASOE) the balloon-borne cryogenic Fourier transform spectrometer MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) recorded several sequences of mid-infrared limb emission spectra, which were used for the retrieval of vertical profiles of CFC-11, CFC-12, HCFC-22, CF4, and N2O5. These gases are characterized by very dense emission bands of unresolved lines. Results are consistent with the current theories of stratospheric dynamics and chemistry.

Clarmann, T.V.; Linden, A.; Wetzel, G.; Oelhaf, H.

1995-01-01T23:59:59.000Z

238

Minimizing Energy Losses in Ducts | Department of Energy  

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

Minimizing Energy Losses in Ducts Minimizing Energy Losses in Ducts Minimizing Energy Losses in Ducts June 24, 2012 - 5:45pm Addthis Placing ductwork in conditioned space can help reduce energy losses. | Photo courtesy of ©iStockphoto/SimplyCreativePhotography Placing ductwork in conditioned space can help reduce energy losses. | Photo courtesy of ©iStockphoto/SimplyCreativePhotography In new home construction or in retrofits, proper duct system design is critical. In recent years, energy-saving designs have sought to include ducts and heating systems in the conditioned space. Many existing duct systems lose a lot of energy from leakage and poor insulation, but you can reduce that loss by sealing and insulating your ducts. Existing ducts may also be blocked or may require simple upgrades.

239

Half-prophets and Robbins' Problem of Minimizing the Expected Rank  

E-Print Network [OSTI]

1993) Minimizing the expected rank with full information. J.Optimal selection based on relative ranks, Israel Journal ofMinimizing the Expected Rank F. THOMAS BRUSS ? , Universit

Thomas S. Ferguson; F. Thomas Bruss

2011-01-01T23:59:59.000Z

240

STATISTICAL MECHANICS: FROM ISING MODELS TO UNITARY MINIMAL MODELS  

E-Print Network [OSTI]

STATISTICAL MECHANICS: FROM ISING MODELS TO UNITARY MINIMAL MODELS Paul A. PEARCE Mathematics universality classes of critical behaviour including the critical and tricritical Ising model, the critical of a ferromagnet with his Ph.D. student Ising2 . This period gave birth to the subject of exactly solvable lattice

Pearce, Paul A.

Note: This page contains sample records for the topic "n2 purged minimal" 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

Curvature and Optimal Algorithms for Learning and Minimizing Submodular Functions  

E-Print Network [OSTI]

Curvature and Optimal Algorithms for Learning and Minimizing Submodular Functions Rishabh Iyer a submodular function everywhere, learning a submodular function (in a PAC-like setting [52]), and constrained of the function (for approximation and learning), or a transformation of algorithms to use an appropriate

Noble, William Stafford

242

Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization  

E-Print Network [OSTI]

Minimizing Energy Consumption in Body Sensor Networks via Convex Optimization Sidharth Nabar energy consumption while limiting the latency in data transfer. In this paper, we focus on polling energy consumption and latency. We show that this problem can be posed as a geometric program, which

Poovendran, Radha

243

Old and New Algorithms for Minimal Coverability Sets  

Science Journals Connector (OSTI)

Many algorithms for computing minimal coverability sets for Petri nets prune futures. That is, if a newmarking strictly covers an old one, then not just the old marking but also some subset of its successor markings is discarded from search. In this ...

Antti Valmari; Henri Hansen

2014-01-01T23:59:59.000Z

244

Rank/sparsity minimization and latent variable graphical model selection  

E-Print Network [OSTI]

Rank/sparsity minimization and latent variable graphical model selection Pablo A. Parrilo · Complication: latent variables · Rank/sparsity decomposition, and generalizations · Convex optimization cond. on other vars. 1 3 2 4 Sparse Low-rank Concentration matrix #12;Proposal for modeling · Decompose

Parrilo, Pablo A.

245

Systems Biology Perspectives on Minimal and Simpler Cells  

Science Journals Connector (OSTI)

...Overall, it has become clear that both fundamental and applied goals for research on minimal...Research from diverse fields, ranging from fundamental biology to LUCA to chassis cells, is...Fermentation and biochemical engineering handbook-principles, process design, and...

Joana C. Xavier; Kiran Raosaheb Patil; Isabel Rocha

2014-09-01T23:59:59.000Z

246

Every Nearly Idempotent Plain Algebra Generates a Minimal Variety  

E-Print Network [OSTI]

Every Nearly Idempotent Plain Algebra Generates a Minimal Variety Keith A. Kearnes Fachbereich Mathematik, AG1 Technische Hochschule Darmstadt D 64289 Darmstadt Germany An algebra A is plain transitively on the non-idempotent elements. In [2], ´Agnes Szendrei proves that every idempotent plain algebra

Kearnes, Keith A.

247

Controlling Minimally-Actuated Vehicles for Applications in Ocean Observation  

E-Print Network [OSTI]

of ocean currents to compute a path between prescribed waypoints that has the highest likelihood to achieve reliable trajectories, as their motion is dictated more by external forces (ocean currents) thanControlling Minimally-Actuated Vehicles for Applications in Ocean Observation Ryan N. Smith

Smith, Ryan N.

248

Comments and Controversies Lost in localization: A minimal middle way  

E-Print Network [OSTI]

Article history: Received 19 March 2009 Revised 5 May 2009 Accepted 7 May 2009 Available online xxxx for a universal coordinate database. Neuroimage.) and Nielsen (Nielsen, F.A., 2009-this issue. Lost database and some possible approaches to creating one. I highlight the issue of minimal or maximal database

Hamilton, Antonia

249

Grid Security and Integration with Minimal Performance Degradation Sugata Sanyal  

E-Print Network [OSTI]

Grid Security and Integration with Minimal Performance Degradation Sugata Sanyal School of computational grids becoming a reality. However, the question of grid security remains one of the important open research issues. Here, we present some novel ideas about how to implement grid security, without

Sanyal, Sugata

250

Energy Minimization in Cooperative Relay Networks with Sleep Modes  

E-Print Network [OSTI]

. To minimize the total energy consumption, working modes of RNs and power allocation need to be optimized dominates the total energy consumption only when the transmission range is long. As wireless net- works consumption model, the total energy con- sumption consists of transmission energy and circuit energy

Paris-Sud XI, Université de

251

Structured Deformations as Energy Minimizers in Models of Fracture and  

E-Print Network [OSTI]

Structured Deformations as Energy Minimizers in Models of Fracture and Hysteresis R. Choksi and for a bar experiencing both smooth exten- sion and macroscopic fractures then are determined, and applications to the shearing of single crystals and to the cohesive fracture of solids are discussed. Yield

252

Global minimization of rational functions using semidefinite programming  

E-Print Network [OSTI]

) with p and q relatively prime. We will consider the optimization problem: p := inf xS p(x) q(x) where prime. We will consider the optimization problem: p := inf xS p(x) q(x) where S is the semi.); · stability analysis of certain dynamical systems, including biochemical reactor models. Global minimization

Neumaier, Arnold

253

Double quantum dot as a minimal thermoelectric generator  

Science Journals Connector (OSTI)

Based on numerical renormalization group calculations, we demonstrate that experimentally realized double quantum dots constitute a minimal thermoelectric generator. In the Kondo regime, one quantum dot acts as an n-type and the other one as a p-type thermoelectric device. Properly connected, a capacitively coupled double quantum dot provides a miniature power supply utilizing the thermal energy of the environment.

S. Donsa; S. Andergassen; K. Held

2014-03-05T23:59:59.000Z

254

Steiner Minimal Trees, Twist Angles, and the Protein Folding Problem  

E-Print Network [OSTI]

Steiner Minimal Trees, Twist Angles, and the Protein Folding Problem J. MacGregor Smith, Yunho Jang. These properties should be ultimately useful in the ab ini- tio protein folding prediction. Proteins 2007;66:889­ 902. VVC 2006 Wiley-Liss, Inc. Key words: Steiner trees; twist angles; protein fold- ing; side chain

Smith, J. MacGregor

255

Systematic Waste Minimization in Chemical Processes. 1. Methodology  

Science Journals Connector (OSTI)

22 In MFM, the functional structure of a system is described using a set of interrelated structures for mass, energy, and information flows. ... (1)?Dantus, M. M.; High, K. A. Economic Evaluation for the Retrofit of Chemical Processes through Waste Minimization and Process Integration. ... Price-Targeting Through Iterative Flowsheet Syntheses in Developing Novel Processing Equipment:? Pervaporation ...

Iskandar Halim; Rajagopalan Srinivasan

2002-01-16T23:59:59.000Z

256

Trees and Power Lines: Minimizing Conflicts between Electric Power  

E-Print Network [OSTI]

Trees and Power Lines: Minimizing Conflicts between Electric Power Infrastructure and the Urban Forest By William Brock Most 1 and Steven Weissman 2 March 10, 2012 #12;iiTrees and Power Lines Trees and Power Lines 5 5. Benefits of the Urban Forest 6 a. Carbon Sequestration 6 b. Property Value 6

Kammen, Daniel M.

257

Higgs boson in non-minimal models at the LHC  

E-Print Network [OSTI]

While approaching the start of the data taking at the LHC, ATLAS and CMS perform studies involving the Higgs boson within non-minimal models besides Supersymmetric models. Highlights from both experiments are summarized; all results refer to LHC low luminosity conditions of 10^33 cm^-2 s^-1.

Nancy Marinelli

2007-09-14T23:59:59.000Z

258

Heat Source Identification Based on L1 Constrained Minimization  

E-Print Network [OSTI]

Heat Source Identification Based on L1 Constrained Minimization Yingying Li Stanley Osher Richard to the heat equation is considered. The initial data is assumed to be a sum of an unknown but finite number of Dirac delta functions at unknown locations. Point-wise values of the heat solution at only a few

Soatto, Stefano

259

OIL SPILL SENSOR USING MULTISPECTRAL INFRARED IMAGING VIA 1 MINIMIZATION  

E-Print Network [OSTI]

OIL SPILL SENSOR USING MULTISPECTRAL INFRARED IMAGING VIA 1 MINIMIZATION Yingying Li , Wei Computational and Applied Mathematics, Rice University ABSTRACT Early detection of oil spill events is the key in detecting the early onset of a small-scale oil spill event. Based on an infrared oil-water contrast model

Yin, Wotao

260

Assessing the N2O/CO2 high pressure separation using ionic liquids with the soft-SAFT EoS  

Science Journals Connector (OSTI)

Abstract The capabilities of the soft-SAFT EoS to accurately describe the thermophysical properties of ionic liquids (ILs) and the phase equilibria of their mixtures with greenhouse gases is extended in this work to address the CO2 and the N2O solubilities in [C4mim]+ \\{ILs\\} from different anion families. In addition to the commonly studied [BF4]? and [NTf2]? anions, the solubility of these gases in \\{ILs\\} with the anions [N(CN)2]?, [SCN]? and [Ac]? is also studied and compared among them, searching for the best system for separation purposes. A coarse-grained molecular model is proposed within the soft-SAFT framework for each newly studied IL based on structural information, guidance obtained from quantum calculations and previous work. The most adequate set of molecular parameters are selected from the \\{ILs\\} density description and from the ability to reproduce the N2O/CO2 solubilities in these \\{ILs\\} at the lowest and highest temperatures for which experimental data are available. A discussion about the association molecular parameters values and their relation with the anion nature is also presented. With these molecular models, the description of the high pressure phase equilibria of the binary systems composed of the two gases and the \\{ILs\\} referred above are described with soft-SAFT for the remaining isotherms. For most systems, the equilibria behavior of the mixtures is predicted without using any binary parameter. When good agreement with the experimental data is not achieved, a single temperature independent binary parameter is enough to allow a good description. Finally, Henry's law constants are calculated from soft-SAFT to evaluate the selectivity of those \\{ILs\\} for the CO2/N2O separation.

Lus M.C. Pereira; Mariana B. Oliveira; Felix Llovell; Lourdes F. Vega; Joo A.P. Coutinho

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Relationship Between Onset Thresholds, Trigger Types, and Rotation Shear for the m/n=2/1 Neoclassical Tearing Mode in a High-? Spherical Torus  

SciTech Connect (OSTI)

The onset conditions for the m/n=2/1 neoclassical tearing mode (NTM) are studied in terms of neoclassical drive, triggering instabilities, and toroidal rotation or rotation shear, in the spherical torus NSTX [M. Ono, et al., Nuclear Fusion 40, 557 (2000)]. There are three typical onset conditions for these modes, given in order of increasing neoclassical drive required for mode onset: triggering by energetic particle modes, triggering by edge localized modes, and cases where the modes appear to grow without a trigger. In all cases, the required drive increases with toroidal rotation shear, implying a stabilizing effect from the shear.

Gerhardt, S. P.; Brennan, D. P.; Buttery, R.; La Haye, R. J.; Sabbagh, S.; Strait, E.; Bell, M.; Bell, R.; Fredrickson, E.; Gates, D.; LeBlanc, B.; Menard, J.; Stutman, D.; Tritz, K.; Yuh, H.

2009-02-24T23:59:59.000Z

262

Investigation of the liquid/vapor composition of compressed liquid CO2 with N2 and O2 in integrated pollutant removal systems for coal combustion  

SciTech Connect (OSTI)

Accurate prediction of the processes in Integrated Pollutant Removal (IPR) using compression and condensation of coal combustion products requires an understanding of the liquid/vapor ternary CO2/O2/N2 system. At conditions close to the critical point of CO2 the existing equations of state deviate from the sparse measured results available in the literature. Building on existing data and procedures, the USDOE/Albany Research Center has designed an apparatus for examining compositions in this region. The design of the apparatus and planned initial experiments are presented.

Oryshchyn, Danylo B.; Ochs, Thomas L.; Summers, Cathy A.; Penner, Larry R.; Gerdemann, Stephen J.

2005-01-01T23:59:59.000Z

263

Light Sterile Neutrino in the Minimal Extended Seesaw  

E-Print Network [OSTI]

Motivated by the recent observations on sterile neutrinos, we present a minimal extension of the canonical type-I seesaw by adding one extra singlet fermion. After the decoupling of right-handed neutrinos, an eV-scale mass eigenstate is obtained without the need of artificially inserting tiny mass scales or Yukawa couplings for sterile neutrinos. In particular, the active-sterile mixing is predicted to be of the order of 0.1. Moreover, we show a concrete flavor A_4 model, in which the required structures of the minimal extended seesaw are realized. We also comment on the feasibility of accommodating a keV sterile neutrino as an attractive candidate for warm dark matter.

He Zhang

2011-10-31T23:59:59.000Z

264

Waste heat boiler optimization by entropy minimization principle  

SciTech Connect (OSTI)

A second law analysis has been undertaken for a waste heat boiler having an economizer, evaporator and superheater. Following the principle of minimization of entropy generation, a general equation for entropy generation number is derived, which incorporates all the operating variables. By differentiating the entropy generation number equation with respect to the operating parameters, various optimization parameters can be obtained. Few illustrations have been made to see the effect of various parameters on entropy generation number.

Reddy, B.V.; Murali, J.; Satheesh, V.S. [Vellore Engineering Coll. (India). Mechanical Engineering Dept.; Nag, P.K. [Indian Inst. of Tech., Kharagpur (India). Mechanical Engineering Dept.

1996-12-31T23:59:59.000Z

265

Hanford site waste minimization and pollution prevention awareness program  

SciTech Connect (OSTI)

This plan documents the requirements of the Hanford Site Waste Minimization/Pollution Prevention (WMin/P2) Program. The plan specifies requirements for Hanford contractors to prevent pollution from entering the environment, to conserve resources and energy, and to reduce the quantity and toxicity of hazardous, radioactive, mixed, and sanitary waste generated at Hanford. The Pollution Prevention Awareness Program required by DOE 5400.1 (DOE 1988A) is included in the Hanford WMin/P2 Program.

Kirkendall, J.R.

1996-09-23T23:59:59.000Z

266

Mixed low-level waste minimization at Los Alamos  

SciTech Connect (OSTI)

During the first six months of University of California 98 Fiscal Year (July--December) Los Alamos National Laboratory has achieved a 57% reduction in mixed low-level waste generation. This has been accomplished through a systems approach that identified and minimized the largest MLLW streams. These included surface-contaminated lead, lead-lined gloveboxes, printed circuit boards, and activated fluorescent lamps. Specific waste minimization projects have been initiated to address these streams. In addition, several chemical processing equipment upgrades are being implemented. Use of contaminated lead is planned for several high energy proton beam stop applications and stainless steel encapsulated lead is being evaluated for other radiological control area applications. INEEL is assisting Los Alamos with a complete systems analysis of analytical chemistry derived mixed wastes at the CMR building and with a minimum life-cycle cost standard glovebox design. Funding for waste minimization upgrades has come from several sources: generator programs, waste management, the generator set-aside program, and Defense Programs funding to INEEL.

Starke, T.P.

1998-12-01T23:59:59.000Z

267

Determine Vehicle Usage and Refueling Trends to Minimize Greenhouse Gas  

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

Vehicle Usage and Refueling Trends to Minimize Greenhouse Vehicle Usage and Refueling Trends to Minimize Greenhouse Gas Emissions Determine Vehicle Usage and Refueling Trends to Minimize Greenhouse Gas Emissions October 7, 2013 - 11:42am Addthis YOU ARE HERE Step 2 Once a Federal agency has identified its most important mobile greenhouse gas (GHG) emission sources overall, it can work with individual sites to determine vehicle usage and refueling trends. Agencies can compare the results of this analysis to internal standards and requirements to identify GHG mitigation opportunities for assets that are underperforming or underutilized. Two examples of this type of analysis focus on: Alternative fuel consumption Vehicle utilization. Figure 1 - An image of a vertical, stacked bar chart titled 'Alternative Fuel Use in AFVs.' The frequency data axis is labeled 'Gallons of Gasoline Equivalent' with a scale of 0-1,400,000 in increments of 200,000. The stacked bar labeled 'CNG Dual Fuel Vehicles' shows CNG from 0-300,000 gallons and Gasoline from 300,000-800,000 gallons. The stacked bar labeled 'E-85 Flex Fuel Vehicles' shows E85 from 0-1,000,000 gallons and Gasoline from 1,000,000-1,250,000 gallons.

268

Open chain versus cyclic 14-electron triatomics: molecular structures and vibrational frequencies of P2Si, P2C, SiN2 and Si2S  

Science Journals Connector (OSTI)

Since the studies of Walsh in the 1950s, triatomic molecules have provided a field of investigation for the fundamentals of bonding. A general consensus has been that rings are higher in energy than open chains due to the strain associated with narrow bond angles. The 14-valence-electron triatomics P2Si, P2C, SiN2, and Si2S were investigated using ab initio molecular quantum mechanical methods. Double zeta plus polarization (DZP) and triple zeta plus double polarization (TZ2P) basis sets have been used in conjunction with self-consistent field (SCF), single and double excitation configuration interaction (CISD) and coupled cluster (CCSD) methods. The all third period \\{P2Si\\} and Si2S were found to have rings as their lowest-energy geometries. The ring geometry of P2C is high in energy because it necessitates formation of a carbene. The ring geometry of SiN2 is only about 5 kcal/mol above the linear Si?N?N isomer.

Randall D. Davy; Henry F. Schaefer III

1996-01-01T23:59:59.000Z

269

Finding a Minimally Informative Dirichlet Prior Distribution Using Least Squares  

SciTech Connect (OSTI)

In a Bayesian framework, the Dirichlet distribution is the conjugate distribution to the multinomial likelihood function, and so the analyst is required to develop a Dirichlet prior that incorporates available information. However, as it is a multiparameter distribution, choosing the Dirichlet parameters is less straight-forward than choosing a prior distribution for a single parameter, such as p in the binomial distribution. In particular, one may wish to incorporate limited information into the prior, resulting in a minimally informative prior distribution that is responsive to updates with sparse data. In the case of binomial p or Poisson, the principle of maximum entropy can be employed to obtain a so-called constrained noninformative prior. However, even in the case of p, such a distribution cannot be written down in closed form, and so an approximate beta distribution is used in the case of p. In the case of the multinomial model with parametric constraints, the approach of maximum entropy does not appear tractable. This paper presents an alternative approach, based on constrained minimization of a least-squares objective function, which leads to a minimally informative Dirichlet prior distribution. The alpha-factor model for common-cause failure, which is widely used in the United States, is the motivation for this approach, and is used to illustrate the method. In this approach to modeling common-cause failure, the alpha-factors, which are the parameters in the underlying multinomial aleatory model for common-cause failure, must be estimated from data that is often quite sparse, because common-cause failures tend to be rare, especially failures of more than two or three components, and so a prior distribution that is responsive to updates with sparse data is needed.

Dana Kelly; Corwin Atwood

2011-03-01T23:59:59.000Z

270

Kac boundary conditions of the logarithmic minimal models  

E-Print Network [OSTI]

We develop further the implementation and analysis of Kac boundary conditions in the general logarithmic minimal models ${\\cal LM}(p,p')$ with $1\\le ptype seam of width $s-1$ columns and an $r$-type seam of width $\\rho-1$ columns. The $r$-type seam contains an arbitrary boundary field $\\xi$. The usual fusion construction of the $r$-type seam relies on the existence of Wenzl-Jones projectors restricting its application to $r\\le\\rho

Pearce, Paul A; Couvreur, Romain

2014-01-01T23:59:59.000Z

271

Pollution prevention and waste minimization in metal finishing  

SciTech Connect (OSTI)

This study was done to identify pollution prevention and waste minimization opportunities in the general plating department and the printed circuit board processing department. Recommendations for certain recycle and recovery technologies were mad in order to reduce usage of acids and the volume of heavy metal sludge that is formed at the industrial Wastewater Pretreatment Facility (IWPF). Some of these technologies discussed were acid purification, electrowinning, and ion exchange. Specific technologies are prescribed for specific processes. Those plating processes where the metals can be recovered are copper, nickel, gold, cadmium, tin, lead, and rhodium.

Stimetz, C.J.

1994-12-01T23:59:59.000Z

272

Process for minimizing solids contamination of liquids from coal pyrolysis  

DOE Patents [OSTI]

In a continuous process for recovery of liquid hydrocarbons from a solid carbonaceous material by pyrolysis of the carbonaceous material in the presence of a particulate source of heat, particulate contamination of the liquid hydrocarbons is minimized. This is accomplished by removing fines from the solid carbonaceous material feed stream before pyrolysis, removing fines from the particulate source of heat before combining it with the carbonaceous material to effect pyrolysis of the carbonaceous material, and providing a coarse fraction of reduced fines content of the carbon containing solid residue resulting from the pyrolysis of the carbonaceous material before oxidizing carbon in the carbon containing solid residue to form the particulate source of heat.

Wickstrom, Gary H. (Yorba Linda, CA); Knell, Everett W. (Los Alamitos, CA); Shaw, Benjamin W. (Costa Mesa, CA); Wang, Yue G. (West Covina, CA)

1981-04-21T23:59:59.000Z

273

On Solutions of Minimal Massive 3D Gravity  

E-Print Network [OSTI]

We look at solutions of Minimal Massive Gravity (MMG), a generalisation of Topologically Massive Gravity (TMG) that improves upon its holographic properties. It is shown that generically (in MMG parameter space) all conformally flat solutions of vacuum MMG are locally isometric to one of the two (A)dS vacua of the theory. We then couple a scalar field, and find that domain wall solutions can only interpolate between these two vacua precisely when the bulk graviton is tachyonic. Finally, we find a non-BTZ AdS black hole solution satisfying Brown-Henneaux boundary conditions, which lies within the "bulk/ boundary unitarity region".

Arvanitakis, Alex S

2015-01-01T23:59:59.000Z

274

Non minimally coupled condensate cosmologies: a phase space analysis  

E-Print Network [OSTI]

We present an analysis of the phase space of cosmological models based on a non minimal coupling between the geometry and a fermionic condensate. We obtain that the strong constraint coming from the Dirac equations allows a detailed design of the cosmology of these models and at the same time guarantees an evolution towards a state indistinguishable from General Relativistic cosmological models. In this light, we show how the use of some specific potentials is able to reproduce naturally two de Sitter phases separated by a power law expansion which could be an interesting model for the unification of an inflationary phase and a dark energy era.

Sante Carloni; Stefano Vignolo; Roberto Cianci

2014-03-11T23:59:59.000Z

275

Electron-impact excitation from metastable helium: 2t1,3 S?nt1,3 L (L=0, 1, 2; n=2,,?)  

Science Journals Connector (OSTI)

Integral cross sections for electron-impact excitation from the helium 2 3 S and 2 1 S metastable excited states, to all energetically higher S, P, and D excited states, are reported from threshold to 200 eV. These cross sections have been obtained using the distorted-wave approximation, and are compared to other experimental and theoretical results. Special attention is paid to obtaining an adequate representation for the wave functions of the n 1 S excited states (n=2, 3, and 4). The total integral electronic excitation cross sections from each of these metastable states, summed over n for fixed L of the final state, and then summed over L, are also reported. These results are combined with other cross-section data to obtain the total inelastic integral cross section for inelastic electron scattering from each of these two helium metastable states.

D. C. Cartwright and G. Csanak

1997-03-01T23:59:59.000Z

276

Inexpensive discrete atomistic model technique for studying excitations on infinite disordered media: the case of orientational glass ArN$_2$  

E-Print Network [OSTI]

Excitations of disordered systems such as glasses are of fundamental and practical interest but computationally very expensive to solve. Here we introduce a technique for modeling these excitations in an infinite disordered medium with a reasonable computational cost. The technique relies on a discrete atomic model to simulate the low-energy behavior of an atomic lattice with molecular impurities. The interaction between different atoms is approximated using a spring like interaction based on the Lennard Jones potential but can be easily adapted to other potentials. The technique allows to solve a statistically representative number of samples with a minimum of computational expense, and uses a Monte-Carlo approach to achieve a state corresponding to any given temperature. This technique has already been applied successfully to a problem with interest in condensed matter physics: the solid solution of N$_2$ in Ar.

Gonzlez-Albuixech, V F

2014-01-01T23:59:59.000Z

277

2659 heat insulation [n] (2)  

Science Journals Connector (OSTI)

constr....(Protection against heat provided by heat-shielding materials in the outer walls of a building to prevent heat build-up in hot regions or in temperate climates during the summer. In tempera...

2010-01-01T23:59:59.000Z

278

6262 swimming pool [n] (2)  

Science Journals Connector (OSTI)

recr. (Pool for swimmers, frequently one structure with descending... swimming center [US] /swimming centre [UK]; opp. ? wading pool

2010-01-01T23:59:59.000Z

279

The Use of Trust Regions in Kohn-Sham Total Energy Minimization  

E-Print Network [OSTI]

minimization in electronic structure calculation. LBNLmethod for electronic structure calculations. Journal ofpractice of electronic structure calculation is to modify

Yang, Chao; Meza, Juan C.; Wang, Lin-wang

2006-01-01T23:59:59.000Z

280

Inverter Minimization in Multi-Level Logic Networks Department of ECE  

E-Print Network [OSTI]

Inverter Minimization in Multi-Level Logic Networks Alok Jain Department of ECE Carnegie Mellon Pittsburgh, PA 15213 Abstract In this paper, we look at the problem of inverter minimization in multi approach takes a more global view and maps the problem of inverter minimization into a problem of removing

Bryant, Randal E.

Note: This page contains sample records for the topic "n2 purged minimal" 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

Energy 32 (2007) 335343 Minimizing the entropy production in a chemical process  

E-Print Network [OSTI]

Energy 32 (2007) 335­343 Minimizing the entropy production in a chemical process Ranheim, Norway Received 2 November 2005 Abstract We minimize the total entropy production of a process of selected units, which minimized the total entropy production of the process, were found. The most important

Kjelstrup, Signe

282

A minimal and predictive $T_7$ lepton flavor 331 model  

E-Print Network [OSTI]

We present a model based on the $SU(3)_{C}\\otimes SU(3)_{L}\\otimes U(1)_{X}$ gauge group having an extra $T_{7}\\otimes Z_{3}\\otimes Z_{14}$ flavor group, where the light active neutrino masses arise via double seesaw mechanism and the observed charged lepton mass hierarchy is a consequence of the $Z_{14}$ symmetry breaking at very high energy. In our minimal and predictive $T_7$ lepton flavor 331 model, the spectrum of neutrinos includes very light active neutrinos and heavy and very heavy sterile neutrinos. The obtained neutrino mixing parameters and neutrino mass squared splittings are compatible with the neutrino oscillation experimental data, for both normal and inverted hierarchies. The model predicts CP conservation in neutrino oscillations.

Hernndez, A E Crcamo

2015-01-01T23:59:59.000Z

283

The Principle of Minimal Resistance in Non-Equilibrium Thermodynamics  

E-Print Network [OSTI]

Analytical models describing the motion of colloidal particles in given velocity fields are presented. In addition to local approaches, leading to well known master equations such as the Langevin and the Fokker-Planck equations, a global description based on path integration is reviewed. This shows that under very broad conditions, during its evolution a dissipative system tends to minimize its energy dissipation in such a way to keep constant the Hamiltonian time rate, equal to the difference between the flux-based and the force-based Rayleigh dissipation functions. At steady state, the Hamiltonian time rate is maximized, leading to a minimum resistance principle. In the unsteady case, we consider the relaxation to equilibrium of harmonic oscillators and the motion of a Brownian particle in shear flow, obtaining results that coincide with the solution of the Fokker-Planck and the Langevin equations.

Mauri, Roberto

2015-01-01T23:59:59.000Z

284

Distributing many points on spheres: minimal energy and designs  

E-Print Network [OSTI]

This survey discusses recent developments in the context of spherical designs and minimal energy point configurations on spheres. The recent solution of the long standing problem of the existence of spherical $t$-designs on $\\mathbb{S}^d$ with $\\mathcal{O}(t^d)$ number of points by A. Bondarenko, D. Radchenko, and M. Viazovska attracted new interest to this subject. Secondly, D. P. Hardin and E. B. Saff proved that point sets minimising the discrete Riesz energy on $\\mathbb{S}^d$ in the hypersingular case are asymptotically uniformly distributed. Both results are of great relevance to the problem of describing the quality of point distributions on $\\mathbb{S}^d$, as well as finding point sets, which exhibit good distribution behaviour with respect to various quality measures.

Johann S. Brauchart; Peter J. Grabner

2014-07-31T23:59:59.000Z

285

Proceedings of pollution prevention and waste minimization tools workshop  

SciTech Connect (OSTI)

Pollution Prevention (P2) has evolved into one of DOE`s sprime strategies to meet environmental, fiscal, and worker safety obligations. P2 program planning, opportunity identification, and implementation tools were developed under the direction of the Waste Minimization Division (EM-334). Forty experts from EM, DP, ER and DOE subcontractors attended this 2-day workshop to formulate the incentives to drive utilization of these tools. Plenary and small working group sessions were held both days. Working Group 1 identified incentives to overcoming barriers in the area of P2 program planning and resource allocation. Working Group 2 identified mechanisms to drive the completion of P2 assessments and generation of opportunities. Working Group 3 compiled and documented a broad range of potential P2 incentives that address fundamental barriers to implementation of cost effective opportunities.

NONE

1995-11-01T23:59:59.000Z

286

Waste Minimization/Pollution Prevention Crosscut Plan, 1994  

SciTech Connect (OSTI)

This plan establishes a Department-wide goal to reduce total releases of toxic chemicals to the environment and off-site transfers of such toxic chemicals by 50 percent by December 31, 1999, in compliance with Executive Order 12856. Each site that meets the threshold quantities of toxic chemicals established in the Emergency Planning and Community Right-to-Know Act (EPCRA) will participate in this goal. In addition, each DOE site will establish site-specific goals to reduce generation of hazardous, radioactive, radioactive mixed, and sanitary wastes and pollutants, as applicable. Implementation of this plan will represent a major step toward the environmental risks and costs associated with DOE operations and increasing the Department`s use of preventive environmental management practices. Investing in Waste Minimization Pollution Prevention (WMin/PP) steadily reduce hazardous and radioactive waste generation and will reduce the need for waste management and unnecessary expenditures for waste treatment, storage, and disposal. A preventive approach to waste management will help solve current environmental and regulatory issues and reduce the need for costly future corrective actions. The purpose of this plan is to establish the strategic framework for integrating WMin/PP into all DOE internal activities. This program includes setting DOE policy and goals for reducing the generation of wastes and pollutants, increasing recycling activities, and establishing an infrastructure to achieve and measure the goals throughout the DOE complex. Waste Minimization and Pollution Prevention Awareness Plans, submitted to Headquarters by DOE field sites, will incorporate the WMin/PP activities and goals outlined in this plan. Success of the DOE WMin/PP program is dependent upon each field operation becoming accountable for resources used, wastes and pollutants generated, and wastes recycled.

Not Available

1994-02-28T23:59:59.000Z

287

Remote processing, delivery and injection of H2[15O] produced from a N2/H2 gas target using a simple and compact apparatus  

Science Journals Connector (OSTI)

We report here a simple apparatus for remote trapping and processing of H2[15O] produced from the N2/H2 target. The system performs a three step operation for H2[15O] delivery at the PET imaging facility which includes the following: (i) collecting the radiotracer in sterile water; (ii) adjusting preparation pH through removal of radiolytically produced ammonia, while at the same time adjusting solution isotonicity; and (iii) delivery of the radiotracer preparation to the injection syringe in a sterile and pyrogen-free form suitable for human studies. The processing apparatus is simple, can be remotely operated and fits inside a Capintec Dose Monitoring Chamber for direct measurement of accumulated radioactivity. Using this system, 300 mCi of H2[15O] (15 ?A of 8 MeV D+ on target) is transferred from target through 120 m 3.18 mm o.d. Impolene tubing to yield 100 mCi of H2[15O] which is isotonic, neutral and suitable for human studies. A remote hydraulically driven system for i.v. injection of the H2[15O] is also described. The device allows for direct measurement of syringe dose while filling, and for easy, as well as safe transport of the injection syringe assembly to the patient's bedside via a shielded delivery cart. This cart houses a hydraulic piston that allows the physician to manually inject the radiotracer without directly handling the syringe.

Richard A. Ferrieri; David L. Alexoff; David J. Schlyer; Alfred P. Wolf

1994-01-01T23:59:59.000Z

288

Effect of H2/CO ratio and N2/CO2 dilution rate on laminar burning velocity of syngas investigated by direct measurement and simulation  

Science Journals Connector (OSTI)

Abstract Laminar burning velocities of syngas/air premixed flames, varying with H2/CO ratio (from 5/95 to 75/25) and N2 or CO2 dilution rate (from 0% to 60%), were accurately measured using a Teflon coated Heat Flux burner and OH-PLIF based Bunsen flame method. Experiments were carried out at atmospheric pressure and room temperature, with fuel/air equivalence ratios ranging from fuel-lean to fuel-rich. Coupled with experimental data, three chemical kinetic mechanisms, namely GRI-Mech 3.0, USC Mech II and Davis H2CO mechanism, were validated. The Davis H2CO and USC Mech II mechanisms appear to provide a better prediction for the laminar burning velocity. The laminar burning velocity variations with H2 and dilution gas contents were systematically investigated. For given dilution gas fraction, the laminar burning velocity reduction rate was enhanced as H2/CO ratio increasing. Effects of the syngas components and equivalence ratio variation on the concentrations of radical H and OH were also studied. It appears that there is a strong linear correlation between the laminar burning velocity and the maximum concentration of the H radical in the reaction zone for syngas. This characteristic is exclusively different from that in methane air premixed flame. These findings indicated that the high thermal diffusivity of the H radical played an important role in the laminar burning velocity enhancement and affected the laminar burning velocity reduction rate under dilution condition.

Z.H. Wang; W.B. Weng; Y. He; Z.S. Li; K.F. Cen

2014-01-01T23:59:59.000Z

289

Finite element meshing approached as a global minimization process  

SciTech Connect (OSTI)

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

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

2000-03-01T23:59:59.000Z

290

Drilling Waste Management Fact Sheet: Drilling Practices That Minimize  

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

Drilling Practices Drilling Practices Fact Sheet - Drilling Practices That Minimize Generation of Drilling Wastes How Are Wells Typically Drilled? The conventional process of drilling oil and gas wells uses a rotary drill bit that is lubricated by drilling fluids or muds. As the drill bit grinds downward through the rock layers, it generates large amounts of ground-up rock known as drill cuttings. This section of the Drilling Waste Management Information System website discusses several alternative drilling practices that result in a lower volume of waste being generated. Oil and gas wells are constructed with multiple layers of pipe known as casing. Traditional wells are not drilled from top to bottom at the same diameter but rather in a series of progressively smaller-diameter intervals. The top interval is drilled starting at the surface and has the largest diameter hole. Drill bits are available in many sizes to drill different diameter holes. The hole diameter can be 20" or larger for the uppermost sections of the well, followed by different combinations of progressively smaller diameters. Some of the common hole diameters are: 17.5", 14.75", 12.25", 8.5", 7.875", and 6.5".

291

Minimal Coupling in Koopman-von Neumann Theory  

E-Print Network [OSTI]

Classical mechanics (CM), like quantum mechanics (QM), can have an operatorial formulation. This was pioneered by Koopman and von Neumann (KvN) in the 30's. They basically formalized, via the introduction of a classical Hilbert space, earlier work of Liouville who had shown that the classical time evolution can take place via an operator, nowadays known as the Liouville operator. In this paper we study how to perform the coupling of a point particle to a gauge field in the KvN version of CM. So we basically implement at the classical operatorial level the analog of the minimal coupling of QM. We show that, differently than in QM, not only the momenta but also other variables have to be coupled to the gauge field. We also analyze in details how the gauge invariance manifests itself in the Hilbert space of KvN and indicate the differences with QM. As an application of the KvN method we study the Landau problem proving that there are many more degeneracies at the classical operatorial level than at the quantum one. As a second example we go through the Aharonov-Bohm phenomenon showing that, at the quantum level, this phenomenon manifests its effects on the spectrum of the quantum Hamiltonian while at the classical level there is no effect whatsoever on the spectrum of the Liouville operator.

E. Gozzi; D. Mauro

2001-05-23T23:59:59.000Z

292

Global Fits of the Minimal Universal Extra Dimensions Scenario  

SciTech Connect (OSTI)

In theories with Universal Extra-Dimensions (UED), the {gamma}{sub 1} particle, first excited state of the hypercharge gauge boson, provides an excellent Dark Matter (DM) candidate. Here we use a modified version of the SuperBayeS code to perform a Bayesian analysis of the minimal UED scenario, in order to assess its detectability at accelerators and with DM experiments. We derive in particular the most probable range of mass and scattering cross sections off nucleons, keeping into account cosmological and electroweak precision constraints. The consequences for the detectability of the {gamma}{sub 1} with direct and indirect experiments are dramatic. The spin-independent cross section probability distribution peaks at {approx} 10{sup -11} pb, i.e. below the sensitivity of ton-scale experiments. The spin-dependent cross-section drives the predicted neutrino flux from the center of the Sun below the reach of present and upcoming experiments. The only strategy that remains open appears to be direct detection with ton-scale experiments sensitive to spin-dependent cross-sections. On the other hand, the LHC with 1 fb{sup -1} of data should be able to probe the current best-fit UED parameters.

Bertone, Gianfranco; /Zurich U. /Paris, Inst. Astrophys.; Kong, Kyoungchul; /SLAC /Kansas U.; de Austri, Roberto Ruiz; /Valencia U., IFIC; Trotta, Roberto; /Imperial Coll., London

2012-06-22T23:59:59.000Z

293

A Variational Approach for Minimizing Lennard-Jones Energies  

E-Print Network [OSTI]

A variational method for computing conformational properties of molecules with Lennard-Jones potentials for the monomer-monomer interactions is presented. The approach is tailored to deal with angular degrees of freedom, {\\it rotors}, and consists in the iterative solution of a set of deterministic equations with annealing in temperature. The singular short-distance behaviour of the Lennard-Jones potential is adiabatically switched on in order to obtain stable convergence. As testbeds for the approach two distinct ensembles of molecules are used, characterized by a roughly dense-packed ore a more elongated ground state. For the latter, problems are generated from natural frequencies of occurrence of amino acids and phenomenologically determined potential parameters; they seem to represent less disorder than was previously assumed in synthetic protein studies. For the dense-packed problems in particular, the variational algorithm clearly outperforms a gradient descent method in terms of minimal energies. Although it cannot compete with a careful simulating annealing algorithm, the variational approach requires only a tiny fraction of the computer time. Issues and results when applying the method to polyelectrolytes at a finite temperature are also briefly discussed.

Carsten Peterson; Ola Sommelius; Bo Sderberg

1995-02-17T23:59:59.000Z

294

Minimal Microwave Anisotropy from Perturbations Induced at Late Times  

E-Print Network [OSTI]

Aside from primordial gravitational instability of the cosmological fluid, various mechanisms have been proposed to generate large-scale structure at relatively late times, including, e.g., ``late-time'' cosmological phase transitions. In these scenarios, it is envisioned that the universe is nearly homogeneous at the time of last scattering and that perturbations grow rapidly sometime after the primordial plasma recombines. On this basis, it was suggested that large inhomogeneities could be generated while leaving relatively little imprint on the cosmic microwave background (MBR) anisotropy. In this paper, we calculate the minimal anisotropies possible in any ``late-time'' scenario for structure formation, given the level of inhomogeneity observed at present. Since the growth of the inhomogeneity involves time-varying gravitational fields, these scenarios inevitably generate significant MBR anisotropy via the Sachs-Wolfe effect. Moreover, we show that the large-angle MBR anisotropy produced by the rapid post-recombination growth of inhomogeneity is generally greater than that produced by the same inhomogeneity grown via gravitational instability. In ``realistic'' scenarios one can decrease the anisotropy compared to models with primordial adiabatic fluctuations, but only on very small angular scales. The value of any particular measure of the anisotropy can be made small in late-time models, but only by making the time-dependence of the gravitational field sufficiently ``pathological''.

Andrew H. Jaffe; Albert Stebbins; Joshua A. Frieman

1993-01-21T23:59:59.000Z

295

The contour method cutting assumption: error minimization and correction  

SciTech Connect (OSTI)

The recently developed contour method can measure 2-D, cross-sectional residual-stress map. A part is cut in two using a precise and low-stress cutting technique such as electric discharge machining. The contours of the new surfaces created by the cut, which will not be flat if residual stresses are relaxed by the cutting, are then measured and used to calculate the original residual stresses. The precise nature of the assumption about the cut is presented theoretically and is evaluated experimentally. Simply assuming a flat cut is overly restrictive and misleading. The critical assumption is that the width of the cut, when measured in the original, undeformed configuration of the body is constant. Stresses at the cut tip during cutting cause the material to deform, which causes errors. The effect of such cutting errors on the measured stresses is presented. The important parameters are quantified. Experimental procedures for minimizing these errors are presented. An iterative finite element procedure to correct for the errors is also presented. The correction procedure is demonstrated on experimental data from a steel beam that was plastically bent to put in a known profile of residual stresses.

Prime, Michael B [Los Alamos National Laboratory; Kastengren, Alan L [ANL

2010-01-01T23:59:59.000Z

296

The IFR pyroprocessing for high-level waste minimization  

SciTech Connect (OSTI)

The process developed for the recycle of integral fast reactor (IFR) spent fuel utilizes a combination of pyrometallurgical and electrochemical methods and has been termed pyroprocessing. The process has been operated at full scale with simulated spent fuel using nonradioactive fission product elements. A comprehensive demonstration of the pyroprocessing of irradiated IFR fuel will begin later this year. Pyroprocessing involves the anodic dissolution of all the constituent elements of the IFR spent fuel and controlled electrotransport (electrorefining) to separate the actinide elements from the fission products present in the spent fuel. The process be applied to the processing of spent light water reactor (LWR) fuel as well, requiring only the addition of a reduction step to convert the LWR fuel as well, requiring only the addition of a reduction step to convert the LWR oxide fuel to metallic form and a separation step to separate uranium from the transuranic (TRU) elements. The TRU elements are then recovered by electroefining in the same manner as the actinides from the IFR high-level wastes arising from pyroprocessing are virtually free of actinides, and the volume of the wastes is minimized by the intrinsic characteristics of the processing of the processing method.

Laidler, J.J. (Argonne National Lab., IL (United States))

1993-01-01T23:59:59.000Z

297

BornOppenheimer breakdown and non-adiabatic lifetimes of rovibrational levels of D2 lying near the n=2 dissociation limit: Experiment and theory  

Science Journals Connector (OSTI)

The singlet gerade states of the hydrogen molecule are strongly affected by the breakdown of the BornOppenheimer approximation. This leads to strong non-adiabatic coupling resulting in large changes of the energies and lifetimes of the quantum levels compared to the values obtained in the BornOppenheimer or even the adiabatic levels of approximation. The non-adiabatic calculations of Quadrelli, Dressler, and Wolniewicz (1990) [7] (hereinafter QDW) for the three highest vibrational levels (?=44, 45, and 46) of the EF 1?g+ state of D2 predicted an enormous increase of the lifetimes upon excitation of just one quantum of rotational motion. However, although our experimental results for these levels just below the n=2 dissociation limit do show a strong increase in lifetime, the non-adiabatic lifetimes calculated by QDW are longer than experiment by as much as three orders of magnitude. In their work on isotopomers of hydrogen QDW and Yu and Dressler (1994) [5] published extensive summary tables of ab initio non-adiabatic coupling data. We present a technique which allows us to use their summary data to calculate approximate non-adiabatic ab initio lifetimes. The results reconcile our observed lifetimes with the non-adiabatic coupling from those previous ab initio calculations and also provide a detailed quantitative and qualitative understanding of the unusual rotational dependence of the lifetimes of these very highly excited levels. We also test the current technique by calculating the lifetimes of other levels involved in interactions with these EF levels and by calculating the lifetimes of the EF ?=33 level of H2, for which no corresponding level exists in the BornOppenheimer or adiabatic approximations.

Stephen C. Ross; Koichi Tsukiyama

2011-01-01T23:59:59.000Z

298

Structural and electronic properties of Au{sub n?x}Pt{sub x} (n = 214; x ? n) clusters: The density functional theory investigation  

SciTech Connect (OSTI)

The structural evolutions and electronic properties of bimetallic Au{sub nx}Pt{sub x} (n = 214; x ? n) clusters are investigated by using the density functional theory (DFT) with the generalized gradient approximation (GGA). The monatomic doping Au{sub n1}Pt clusters are emphasized and compared with the corresponding pristine Au{sub n} clusters. The results reveal that the planar configurations are favored for both Au{sub n1}Pt and Au{sub n} clusters with size up to n = 13, and the former often employ the substitution patterns based on the structures of the latter. The most stable clusters are Au{sub 6} and Au{sub 6}Pt, which adopt regular planar triangle (D{sub 3h}) and hexagon-ring (D{sub 6h}) structures and can be regarded as the preferential building units in designing large clusters. For Pt-rich bimetallic clusters, their structures can be obtained from the substitution of Pt atoms by Au atoms from the Pt{sub n} structures, where Pt atoms assemble together and occupy the center yet Au atoms prefer the apex positions showing a segregation effect. With respect to pristine Au clusters, Au{sub n}Pt clusters exhibit somewhat weaker and less pronounced odd-even oscillations in the highest occupied and lowest unoccupied molecular-orbital gaps (HOMO-LUMO gap), electron affinity (EA), and ionization potential (IP) due to the partially released electron pairing effect. The analyses of electronic structure indicate that Pt atoms in AuPt clusters would delocalize their one 6s and one 5d electrons to contribute the electronic shell closure. The sp-d hybridizations as well as the d-d interactions between the host Au and dopant Pt atoms result in the enhanced stabilities of AuPt clusters.

Yuan, H. K.; Kuang, A. L.; Tian, C. L.; Chen, H., E-mail: chenh@swu.edu.cn [School of Physical Science and Technology, Southwest University, Chongqing, 400715 (China)

2014-03-15T23:59:59.000Z

299

The minimal genus problem in rational surfaces \\(CP^2 \\# n\\overline {CP^2 } \\)  

Science Journals Connector (OSTI)

There are three key ingredients in the study of the minimal genus problem for rational surfaces $$CP^2 \\# n\\overline {CP^2 } $$ ...

Xuan Zhao; Hongzhu Gao; Huaidong Qiu

2006-09-01T23:59:59.000Z

300

Structural proteomics of minimal organisms: conservation of protein fold usage and evolutionary implications  

E-Print Network [OSTI]

e A) Variation in fold usage between organisms, in differentB) Variation in fold usage between minimal organisms onlyConservation of protein fold usage and evolutionary

Chandonia, John-Marc; Kim, Sung-Hou

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Solution of inverse dynamics problems for contour error minimization in CNC machines  

E-Print Network [OSTI]

metal cut- ting mechanics, machine tool vibrations, and CNCerror minimization in CNC machines Charlie A. Ernesto RidaAbstract For CNC machines governed by typical feed- back

Ernesto, Charlie A.; Farouki, Rida T.

2010-01-01T23:59:59.000Z

302

Direct Free Energy Minimization Methods: Application to Grain Boundaries [and Discussion  

Science Journals Connector (OSTI)

16 November 1992 research-article Direct Free Energy Minimization Methods: Application to Grain Boundaries [and Discussion] A. P. Sutton P. A. Mulheran A. M. Stoneham A critical...

1992-01-01T23:59:59.000Z

303

Total and Peak Energy Consumption Minimization of Building HVAC Systems Using Model Predictive Control  

E-Print Network [OSTI]

combination of the total energy consumption and the peakalso reduces the total energy consumption of the occupancyTotal and Peak Energy Consumption Minimization of Building

Maasoumy, Mehdi; Sangiovanni-Vincentelli, Alberto

2012-01-01T23:59:59.000Z

304

Necessary and Sufficient Conditions for Success of the Nuclear Norm Heuristic for Rank Minimization  

E-Print Network [OSTI]

Necessary and Sufficient Conditions for Success of the Nuclear Norm Heuristic for Rank Minimization this distribution satisfy our conditions for success with overwhelming probability provided the number

Recht, Ben

305

Upcoming Funding Opportunity to Develop and Field Test Wind Energy Bat Impact Minimization Technologies  

Broader source: Energy.gov [DOE]

EERE's Wind Program announced a Notice of Intent to issue a funding opportunity entitled "Wind Energy Bat Impact Minimization Technologies and Field Testing Opportunities."

306

A Constrained Optimization Algorithm for Total Energy Minimization in Electronic Structure Calculation  

E-Print Network [OSTI]

Functionals for Electronic Structure Calculations. J. Comp.Minimization in Electronic Structure Calculation ? ChaoKey words: electronic structure calculation, total energy

Yang, Chao; Meza, Juan C.; Wang, Lin-Wang

2005-01-01T23:59:59.000Z

307

Good Practice Guide Waste Minimization/Pollution Prevention  

SciTech Connect (OSTI)

This Good Practice Guide provides tools, information, and examples for promoting the implementation of pollution prevention during the design phases of U.S. Department of Energy (DOE) projects. It is one of several Guides for implementing DOE Order 430.1, Life-cycle Asset Management. DOE Order 430.1 provides requirements for DOE, in partnership with its contractors, to plan, acquire, operate, maintain, and dispose of physical assets. The goals of designing for pollution prevention are to minimize raw material consumption, energy consumption, waste generation, health and safety impacts, and ecological degradation over the entire life of the facility (EPA 1993a). Users of this Guide will learn to translate national policy and regulatory requirements for pollution prevention into action at the project level. The Guide was written to be applicable to all DOE projects, regardless of project size or design phase. Users are expected to interpret the Guide for their individual project's circumstances, applying a graded approach so that the effort is consistent with the anticipated waste generation and resource consumption of the physical asset. This Guide employs a combination of pollution prevention opportunity assessment (PPOA) methods and design for environment (DfE) philosophies. The PPOA process was primarily developed for existing products, processes, and facilities. The PPOA process has been modified in this Guide to address the circumstances of the DOE design process as delineated in DOE Order 430.1 and its associated Good Practice Guides. This modified form of the PPOA is termed the Pollution Prevention Design Assessment (P2DA). Information on current nationwide methods and successes in designing for the environment also have been reviewed and are integrated into this guidance.

J Dorsey

1999-10-14T23:59:59.000Z

308

Validation of transport models using additive flux minimization technique  

SciTech Connect (OSTI)

A new additive flux minimization technique is proposed for carrying out the verification and validation (V and V) of anomalous transport models. In this approach, the plasma profiles are computed in time dependent predictive simulations in which an additional effective diffusivity is varied. The goal is to obtain an optimal match between the computed and experimental profile. This new technique has several advantages over traditional V and V methods for transport models in tokamaks and takes advantage of uncertainty quantification methods developed by the applied math community. As a demonstration of its efficiency, the technique is applied to the hypothesis that the paleoclassical density transport dominates in the plasma edge region in DIII-D tokamak discharges. A simplified version of the paleoclassical model that utilizes the Spitzer resistivity for the parallel neoclassical resistivity and neglects the trapped particle effects is tested in this paper. It is shown that a contribution to density transport, in addition to the paleoclassical density transport, is needed in order to describe the experimental profiles. It is found that more additional diffusivity is needed at the top of the H-mode pedestal, and almost no additional diffusivity is needed at the pedestal bottom. The implementation of this V and V technique uses the FACETS::Core transport solver and the DAKOTA toolkit for design optimization and uncertainty quantification. The FACETS::Core solver is used for advancing the plasma density profiles. The DAKOTA toolkit is used for the optimization of plasma profiles and the computation of the additional diffusivity that is required for the predicted density profile to match the experimental profile.

Pankin, A. Y.; Kruger, S. E. [Tech-X Corporation, 5621 Arapahoe Ave., Boulder, Colorado 80303 (United States)] [Tech-X Corporation, 5621 Arapahoe Ave., Boulder, Colorado 80303 (United States); Groebner, R. J. [General Atomics, San Diego, California 92121 (United States)] [General Atomics, San Diego, California 92121 (United States); Hakim, A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States); Kritz, A. H.; Rafiq, T. [Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015 (United States)] [Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015 (United States)

2013-10-15T23:59:59.000Z

309

Halide and Oxy-halide Eutectic Systems for High Performance High...  

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

setup (building a home-made enclosure to purge with N 2 ) in case salts also react with air - Quartz weight ordered to replace Ni Measure volume expansion directly...

310

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4?-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixedvalence complexes [(NH3)5Ru-L- Ru(NH3)5]5+ (L = N2,pyz, bipy, pym, bpa) is analyzed by the semiempirical CINDO +...

O. V. Sizova; V. I. Baranovskii; A. I. Panin

311

Intramolecular electron transfer in mixed-valence complexes [(NH3)5Ru-L-Ru(NH3)5]5+ (L = N2, pyz, pym, 4,4-bipy, bpa)  

Science Journals Connector (OSTI)

The dynamics of the intramolecular electron transfer from Ru(II) to Ru(III) in binuclear mixed-valence complexes [NH3)5Ru -L-Ru(NH3)5]5+ (L = N2, pyz, bipy, pym, bpa) is analyzed by the semiempiri...

O. V. Sizova; V. I. Baranovskii; A. I. Panin

2002-02-01T23:59:59.000Z

312

A New Method for Minimizing Buffer Sizes for Cyclo-Static Dataflow Graphs  

E-Print Network [OSTI]

. This paper presents an original methodology to minimize the global surface of the buffers for a Cyclo for real life problems. The resolution of the optimization problem for a Reed- Solomon Decoder application that the methodology developed in [5] to minimize the surface of the buffers for a minimum fixed throughput for a SDF

Paris-Sud XI, Université de

313

Explicit CP Violation in the Higgs Sector of the Next-to-Minimal Supersymmetric Standard Model  

Science Journals Connector (OSTI)

......1997 research-article Articles Explicit CP Violation in the Higgs Sector of the Next-to-Minimal...University, Nagoya 464-01 We analyze explicit CP violation in the Higgs sector of the next-to-minimal...and the singlet N, and between N itself. CP symmetry is conserved in the extreme limits......

Naoyuki Haba

1997-02-01T23:59:59.000Z

314

Power-consumption minimization mechanism for heterogeneous multi-cell cellular network  

E-Print Network [OSTI]

Power-consumption minimization mechanism for heterogeneous multi-cell cellular network Chulhyun, yhchoi } @snu.ac.kr Power-consumption minimization mechanism for heterogeneous multi-cell cellular consumes large amount of energy, reduction of energy consumption in ICT attracts attention of research

315

THE DE GIORGI MEASURE AND AN OBSTACLE PROBLEM RELATED TO MINIMAL SURFACES IN  

E-Print Network [OSTI]

THE DE GIORGI MEASURE AND AN OBSTACLE PROBLEM RELATED TO MINIMAL SURFACES IN METRIC SPACES JUHA of a set with minimal perime- ter that separates two disjoint sets in a metric measure space equipped with a doubling measure and supporting a Poincar´e in- equality. A measure constructed by De Giorgi is used

Kinnunen, Juha

316

Trust Management in Mobile Ad Hoc Networks for Bias Minimization and Application  

E-Print Network [OSTI]

for MANETs in two important areas: trust bias minimization and applica- tion performance maximization1 Trust Management in Mobile Ad Hoc Networks for Bias Minimization and Application Performance as an active research area as evidenced by the proliferation of trust/reputation protocols to support mobile

Chen, Ing-Ray

317

Effectiveness of marine reserve networks in representing biodiversity and minimizing impact to fishermen: a comparison  

E-Print Network [OSTI]

LETTER Effectiveness of marine reserve networks in representing biodiversity and minimizing impact of California's Marine Life Protection Act Initiative at represent- ing biodiversity and minimizing estimated to design marine reserve networks that meet biodiversity targets efficiently (Kirkpatrick 1983; Leslie et al

Queensland, University of

318

Optimal Bus Stop Spacing for Minimizing Transit Operation Cost and Robert L. Bertini2  

E-Print Network [OSTI]

. Two cost functions are considered in the model including passenger access cost and in-vehicle1 Optimal Bus Stop Spacing for Minimizing Transit Operation Cost Huan Li1 and Robert L. Bertini2 model is generated with the aim at minimizing the operation cost without impact on transit accessibility

Bertini, Robert L.

319

Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni`ere  

E-Print Network [OSTI]

Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni in finding the shape of the tree that minimizes the viscous energy dissipated by the fluid with a constrained of energy by viscous effects and the question of the optimization of the tree geometry arises. Important

Paris-Sud XI, Université de

320

Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni`ere  

E-Print Network [OSTI]

Shape minimization of the dissipated energy in dyadic trees Xavier Dubois de La Sabloni in finding the shape of the tree that minimizes the viscous energy dissipated by the fluid with a constrained on the optimal shape of a dyadic tree in which flows a Newtonian fluid. Our optimization problem consists

Privat, Yannick

Note: This page contains sample records for the topic "n2 purged minimal" 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

Power Fluctuation Minimization During Behavioral Synthesis using ILP-Based Datapath Scheduling  

E-Print Network [OSTI]

Power Fluctuation Minimization During Behavioral Synthesis using ILP-Based Datapath Scheduling, FL 33620 smohanty,ranganat,chappidi¡ @csee.usf.edu Abstract-- We model the power fluctuation as cycle-to-cycle power gradi- ent and minimize the mean of the power gradients using ILP. We propose

Mohanty, Saraju P.

322

Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways  

E-Print Network [OSTI]

Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways Ali induce dominant pathway mechanisms in protein folding. Citation: Mohazab AR, Plotkin SS (2013) Polymer Uncrossing and Knotting in Protein Folding, and Their Role in Minimal Folding Pathways. PLoS ONE 8(1): e53642

Plotkin, Steven S.

323

THE USE OF TRUST REGIONS IN KOHN-SHAM TOTAL ENERGY MINIMIZATION  

E-Print Network [OSTI]

-consistent and the Kohn-Sham (KS) total energy function associated with the system reaches the global minimum. It has longTHE USE OF TRUST REGIONS IN KOHN-SHAM TOTAL ENERGY MINIMIZATION CHAO YANG , JUAN C. MEZA , AND LIN system, is viewed in this paper as an optimization procedure that minimizes the Kohn- Sham total energy

Geddes, Cameron Guy Robinson

324

ON A CONJECTURE BY COFFMAN, FLATTO, AND WRIGHT ON STOCHASTIC MACHINE MINIMIZATION  

E-Print Network [OSTI]

ON A CONJECTURE BY COFFMAN, FLATTO, AND WRIGHT ON STOCHASTIC MACHINE MINIMIZATION NAH-OAK SONG, pp. 681­687 Abstract. We investigate a conjecture stated by Coffman, Flatto, and Wright within. Coffman, Flatto, and Wright [1] considered a stochastic ma- chine minimization problem (described

Teneketzis, Demosthenis

325

Online Speed Scaling Based on Active Job Count to Minimize Flow plus Energy  

E-Print Network [OSTI]

Online Speed Scaling Based on Active Job Count to Minimize Flow plus Energy Tak-Wah Lam Lap-Kei Lee research on online job scheduling has gradually taken speed scaling and energy usage into consideration algorithms that aim at minimizing the total flow time plus energy usage. The results are divided into two

Wong, Prudence W.H.

326

Zone Freezing Study for Pyrochemical Process Waste Minimization  

SciTech Connect (OSTI)

Pyroprocessing technology is a non-aqueous separation process for treatment of used nuclear fuel. At the heart of pyroprocessing lies the electrorefiner, which electrochemically dissolves uranium from the used fuel at the anode and deposits it onto a cathode. During this operation, sodium, transuranics, and fission product chlorides accumulate in the electrolyte salt (LiCl-KCl). These contaminates change the characteristics of the salt overtime and as a result, large volumes of contaminated salt are being removed, reprocessed and stored as radioactive waste. To reduce the storage volumes and improve recycling process for cost minimization, a salt purification method called zone freezing has been proposed at Korea Atomic Energy Research Institute (KAERI). Zone freezing is melt crystallization process similar to the vertical Bridgeman method. In this process, the eutectic salt is slowly cooled axially from top to bottom. As solidification occurs, the fission products are rejected from the solid interface and forced into the liquid phase. The resulting product is a grown crystal with the bulk of the fission products near the bottom of the salt ingot, where they can be easily be sectioned and removed. Despite successful feasibility report from KAERI on this process, there were many unexplored parameters to help understanding and improving its operational routines. Thus, this becomes the main motivation of this proposed study. The majority of this work has been focused on the CsCl-LiCl-KCl ternary salt. CeCl3-LiCl-KCl was also investigated to check whether or not this process is feasible for the trivalent speciessurrogate for rare-earths and transuranics. For the main part of the work, several parameters were varied, they are: (1) the retort advancement rate1.8, 3.2, and 5.0 mm/hr, (2) the crucible lid configurationslid versus no-lid, (3) the amount or size of mixture50 and 400 g, (4) the composition of CsCl in the salt1, 3, and 5 wt%, and (5) the temperature differences between the high and low furnace zones200 and 300 ?C. During each experiment, the temperatures at selected locations around the crucible were measured and recorded to provide temperature profiles. Following each experiment, samples were collected and elemental analysis was done to determine the composition of iii the salt. Several modelsnon-mixed, well-mixed, Favier, and hybridwere explored to describe the zone freezing process. For CsCl-LiCl-KCl system, experimental results indicate that through this process up to 90% of the used salt can be recycled, effectively reducing waste volume by a factor of ten. The optimal configuration was found to be a 5.0 mm/hr rate with a lid configuration and a ?T of 200C. The larger 400 g mixtures had recycle percentages similar to the 50 g mixtures; however, the throughput per time was greater for the 400 g case. As a result, the 400 g case is recommended. For the CeCl3-LiCl-KCl system, the result implies that it is possible to use this process to separate the rare-earth and transuranics chlorides. Different models were applied to only CsCl ternary system. The best fit model was the hybrid model as a result of a solute transport transition from non- mixed to well-mixed throughout the growing process.

Ammon Williams

2012-05-01T23:59:59.000Z

327

Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide  

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

Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. Available for thumbnail of Feynman Center (505) 665-9090 Email Oxygen-Consuming Chlor-Alkali Cell Configured To Minimize Peroxide Formation Oxygen-consuming zero gap chlor-alkali cell was configured to minimize peroxide formation. The cell included an ion-exchange membrane that divided the cell into an anode chamber including an anode and a cathode chamber including an oxygen gas diffusion cathode. The cathode included a single-piece of electrically conducting graphitized carbon cloth. Catalyst and polytetrafluoroethylene were attached to only one side of the cloth.

328

MINIMIZING THE BONDLINE THERMAL RESISTANCE IN THERMAL INTERFACE MATERIALS WITHOUT AFFECTING RELIABILITY  

E-Print Network [OSTI]

MINIMIZING THE BONDLINE THERMAL RESISTANCE IN THERMAL INTERFACE MATERIALS WITHOUT AFFECTING microstructure, and bondline thermal resistance with the tradeoffs between material systems, manufacturability of devices to heat sinks using existing commercial thermal interface materials (TIMs). The present study

Paris-Sud XI, Université de

329

A robust window-based multi-node minimization technique using Boolean relations  

E-Print Network [OSTI]

Multi-node optimization using Boolean relations is a powerful approach for network minimization. The approach has been studied in theory, and so far its superiority over single node optimization techniques has only been conjectured for practical...

Cobb, Jeffrey Lee

2008-10-10T23:59:59.000Z

330

A robust window-based multi-node minimization technique using Boolean relations  

E-Print Network [OSTI]

Multi-node optimization using Boolean relations is a powerful approach for network minimization. The approach has been studied in theory, and so far its superiority over single node optimization techniques has only been conjectured for practical...

Cobb, Jeffrey Lee

2009-05-15T23:59:59.000Z

331

Pairing of valence electrons as necessary condition for energy minimization in a crystal  

E-Print Network [OSTI]

Pairing of valence electrons can lead to energy minimization of a crystal. It can be proved by use of representation of the valence electrons as plane waves in periodic potential of the crystal.

Dolgopolov Stanislav Olegovich

2014-10-21T23:59:59.000Z

332

MHS2: A Map-Reduce Heuristic-Driven Minimal Hitting Set Search Algorithm  

Science Journals Connector (OSTI)

Computing minimal hitting sets (also known as set covers) for a collection of sets is an important problem in many domains...Staccato, which was proposed in the context of reasoning-based fault localization. In t...

Nuno Cardoso; Rui Abreu

2013-01-01T23:59:59.000Z

333

Minimizing the production of unwanted activation products in the AR40/AR39 dating method  

E-Print Network [OSTI]

region, being stabilized radially from below the rotisserie by a bayonet and above the rotisserie by polyethylene plugs. The polyethylene plugs also served as shields to minimize the gamma and neutron dose rates at the reactor bridge level. The rotisserie...

Brightwell, Michael Shane

2012-06-07T23:59:59.000Z

334

Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization  

E-Print Network [OSTI]

The affine rank minimization problem consists of finding a matrix of minimum rank that satisfies a given system of linear equality constraints. Such problems have appeared in the literature of a diverse set of fields ...

Recht, Benjamin

335

Establishing and Implementing a Waste Minimization Program in the Chemical and Oil Industries  

E-Print Network [OSTI]

The incentives for establishing and the expertise for implementing successful waste minimization programs can be found in every company. The in-house expertise that discovers, designs, builds and manages manufacturing processes understand...

Hollod, G. J.; Marton, R. J.

336

Combined fit of low energy constraints to minimal supersymmetry and discovery potential at LEP II  

Science Journals Connector (OSTI)

Within the Constrained Minimal Supersymmetric Standard Model (CMSSM) it is possible to predict the low energy gauge couplings and masses of the 3. generation particles from a few parameters at the GUT scale. I...

W. de Boer; G. Burkart; R. Ehret

1996-07-01T23:59:59.000Z

337

Predictions of SUSY masses in the minimal supersymmetric grand unified theory  

Science Journals Connector (OSTI)

The Minimal Supersymmetric Standard Model (MSSM) distinguishes itself from other GUT's by a successful prediction of many unrelated phenomena with a minimum number of parameters. Among them: a) Unification of ...

W. de Boer; R. Ehret; D. I. Kazakov

1995-01-01T23:59:59.000Z

338

A minimal axiom group for rough set based on quasi-ordering  

Science Journals Connector (OSTI)

Rough set axiomatization is one aspect of rough set study to characterize rough set theory using dependable and minimal axiom groups. Thus, rough set theory can be studied by logic and axiom system methods. The c...

Jian-hua Dai; Wei-dong Chen; Yun-he Pan

2004-07-01T23:59:59.000Z

339

Development and test case application of a waste minimization project evaluation method  

SciTech Connect (OSTI)

The authors have developed and applied a methodology to evaluate and prioritize proposed waste minimization activities affecting Department of Energy (DOE) programs. The approach provides a systematic and defensible method for selecting a set of waste minimization proposals that maximizes the benefits to DOE while maintaining costs within a specified budget. The report discusses the development of a structured set of evaluation criteria to characterize waste minimization issues; techniques for documenting the anticipated and potential costs, risks, and benefits of waste minimization proposals; and a method of translating disparate data into a figure of merit for each proposal. A test case demonstration of this prioritization approach was applied to proposals currently being considered at two DOE weapons production facilities. Recommendations are provided for combining this approach with the existing DOE proposal selection process. 9 refs., 9 figs., 3 tabs.

Kjeldgaard, E.A. (Sandia National Labs., Albuquerque, NM (USA)); Saloio, J.H.; Varnado, G.B. (ERC Environmental and Energy Services Co., Albuquerque, NM (USA))

1990-08-01T23:59:59.000Z

340

Cost Minimization in an Energy-Intensive Plant Using Mathematical Programming Approaches  

Science Journals Connector (OSTI)

Cost Minimization in an Energy-Intensive Plant Using Mathematical Programming Approaches ... This creates a potential opportunity to reduce average operating costs by changing the operating mode and production rates depending on the power costs. ...

M. G. Ierapetritou; D. Wu; J. Vin; P. Sweeney; M. Chigirinskiy

2002-09-24T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

ENVELOPING SEMI-GROUP FOR MINIMAL ROTATIONS ON CUT UP TORI  

E-Print Network [OSTI]

are in general hard to identify, but the special class of topological eigen- values (the ones associatedENVELOPING SEMI-GROUP FOR MINIMAL ROTATIONS ON CUT UP TORI JEAN-BAPTISTE AUJOGUE Abstract

Paris-Sud XI, Université de

342

Determination of an acceptable assimilable organic carbon (AOC) level for biological stability in water distribution systems with minimized chlorine residual  

Science Journals Connector (OSTI)

There is considerable interest in minimizing the chlorine residual in Japan because of increasing complaints about a chlorinous odor in drinking water. However, minimizing the chlorine residual causes the microbi...

Yumiko Ohkouchi; Bich Thuy Ly; Suguru Ishikawa

2013-02-01T23:59:59.000Z

343

Proper use of sodium bisulfite with minimal salt penetration during brine immersion freezing of shrimp  

E-Print Network [OSTI]

PROPER USE OF SODIUM BISULFITE WITH MINIMAL SALT PENETRATION DURING BRINE IMMERSION FREEZING OF SHRIMP A Thesis by SUZANNE RENE BROUSSARD Submitted to the Graduate College of Texas ASM University in partial fulfillment of the reguirement... for the degree of MASTER OF SCIENCE MAY 1988 OC o Z m Z IJ III s Z Major Subject: Food Science and Technology PROPER USE OF SODIUM BISULFITE WITH MINIMAL SALT PENETRATION DURING BRINE IMMERSION FREEZING OF SHRIMP A Thesis by SUZANNE RENE...

Broussard, Suzanne Rene

2012-06-07T23:59:59.000Z

344

Encoding serial data for energy-delay-product and energy minimization  

E-Print Network [OSTI]

: : : : : : : : : : : : : : : : : : : 38 IV.3 Results of 2-LIWT for Green Channel : : : : : : : : : : : : : : : : : : : 38 IV.4 Results of 2-LIWT for Red Channel : : : : : : : : : : : : : : : : : : : : 38 IV.5 Results of IVTM optimized for EDP minimization for Blue Channel with k = 3, n... = 5, p = 6 and R = 50 : : : : : : : : : : : : : : : : : : : : 39 IV.6 Results of IVTM optimized for EDP minimization for Green Channel with k = 3, n = 5, p = 6 and R = 50 : : : : : : : : : : : : : : : : : : : : 39 IV.7 Results of IVTM optimized for EDP...

Ekambavanan, Sasidharan

2009-05-15T23:59:59.000Z

345

Relativistic Approach to the Hydrogen Atom in a Minimal Length Scenario  

E-Print Network [OSTI]

In this work we show that relativistic contributions to the ground state energy of the hydrogen atom arising from the presence of a minimal length introduced by a Lorentz-covariant algebra are more relevant than non-relativistic ones, and because of this the non-relativistic approach is not suitable. In addition, comparing our result with experimental data we can roughly estimate the upper bound for the minimal length value of the order $10^{-20}m$.

R. O. Francisco; T. L. Antonacci Oakes; J. C. Fabris; J. A. Nogueira

2014-02-19T23:59:59.000Z

346

Minimizing damage to a propped fracture by correct selection of proppant and controlled flowback procedures  

E-Print Network [OSTI]

MINIMIZING DAMAGE TO A PROPPED FRACTURE BY CORRECT SELECTION OF PROPPANT AND CONTROLLED FLOWBACK PROCEDURES A Thesis by BRADLEY MASON ROBINSON Submitted to the Graduate College of Texas ASM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 1986 Major Subject: Petroleum Engineering MINIMIZING DAMAGE TO A PROPPED FRACTURE BY CORRECT SELECTION OF PROPPANT AND CONTROLLED FLOWBACK PROCEDURES A Thesis by BRADLEY MASON ROBINSON Approved...

Robinson, Bradley Mason

1986-01-01T23:59:59.000Z

347

Minimal regularity conditions for the end-point estimate of bilinear Caldern-Zygmund operators  

E-Print Network [OSTI]

(1.5) |??m(?)| #2; |?|?|?| for all |?| ? [n/2] + 1 and the weaker Hormander [14] condition (1.6) sup j?Z ?m(2j )??L2s(Rn) n/2, where ? is a smooth bump supported away from the origin and L2s is the usual Sobolev space, imply (1... be in the case of multipliers. If we again consider m as a Fourier multiplier in R2n, then (1.10) is just Hor- manders condition, and we have for the kernel of the corresponding linear operator in R2n for any y, z ? Rn ? |y?y?|+|z?z?|?c|x1?y|+|x2?z| |K(x1 ? y...

Perez, Carlos; Torres, Rodolfo H.

2014-01-09T23:59:59.000Z

348

Non-linear curvature perturbation in multi-field inflation models with non-minimal coupling  

SciTech Connect (OSTI)

Using the ?N formalism we consider the non-linear curvature perturbation in multi-field models of inflation with non-minimal coupling. In particular, we focus on the relation between the ?N formalism as applied in the conformally related Jordan and Einstein frames. Exploiting results already known in the Einstein frame, we give expressions for the power spectrum, spectral tilt and non-gaussianity associated with the Jordan frame curvature perturbation. In the case that an adiabatic limit has not been reached, we find that in general these quantities differ from those associated with the Einstein frame curvature perturbation, and also confirm their equivalence in the absence of isocurvature modes. We then proceed to consider two analytically soluble examples, the first involving a non-minimally coupled 'spectator' field and the second being a non-minimally coupled extension of the multi-brid inflation model. In the first model we find that predictions can easily be brought into agreement with the recent Planck results, as the tensor-to-scalar ratio is generally small, the spectral tilt tuneable and the non-gaussianity suppressed. In the second model we find that predictions for all three parameters can differ substantially from those predicted in the minimally coupled case, and that the recent Planck results for the spectral tilt can be used to constrain the non-minimal coupling parameters.

White, Jonathan; Minamitsuji, Masato; Sasaki, Misao, E-mail: jwhite@yukawa.kyoto-u.ac.jp, E-mail: masato.minamitsuji@ist.utl.pt, E-mail: misao@yukawa.kyoto-u.ac.jp [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

2013-09-01T23:59:59.000Z

349

Time-dependent density-functional theory for molecular processes in strong fields: Study of multiphoton processes and dynamical response of individual valence electrons of N2 in intense laser fields  

E-Print Network [OSTI]

in the exchange ~x!- only limit. In the latter approach @1#, theTime-dependent density-functional theor Study of multiphoton processes and dynam of N2 in inten Xi Chu and Department of Chemistry, University of Kansas, and Kansas Ce ~Received 30 July 2001; pu We...-I CHU PHYSICAL REVIEW A 64 0634041sg 21su 22sg 22su 21pu 43sg 2 . According to the valence bond theory, this molecule has a triple bond formed with 3sg and 1pu electrons. The 3sg orbital is parallel to the internuclear axis and the two degen- erate 1pu...

Chu, Xi; Chu, Shih-I

2001-11-14T23:59:59.000Z

350

Non-minimally coupled scalar field cosmology on the phase plane  

SciTech Connect (OSTI)

In this publication we investigate dynamics of a flat FRW cosmological model with a non-minimally coupled scalar field with the coupling term {xi}R{psi}{sup 2} in the scalar field action. The quadratic potential function V({psi}) {proportional_to} {psi}{sup 2} is assumed. All the evolutional paths are visualized and classified in the phase plane, at which the parameter of non-minimal coupling {xi} plays the role of a control parameter. The fragility of global dynamics with respect to changes of the coupling constant is studied in details. We find that the future big rip singularity appearing in the phantom scalar field cosmological models can be avoided due to non-minimal coupling constant effects. We have shown the existence of a finite scale factor singular point (future or past) where the Hubble function as well as its first cosmological time derivative diverge.

Hrycyna, Orest [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland)] [Department of Theoretical Physics, Faculty of Philosophy, The John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland); Szydlowski, Marek, E-mail: hrycyna@kul.lublin.pl, E-mail: uoszydlo@cyf-kr.edu.pl [Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia (Italy)] [Dipartimento di Fisica Nucleare e Teorica, Universita degli studi di Pavia, via A. Bassi 6, I-27100 Pavia (Italy)

2009-04-15T23:59:59.000Z

351

A Uniqueness Result for Minimizers of the 1D Log-gas Renormalized Energy  

E-Print Network [OSTI]

Sandier and Serfaty studied the one-dimensional Log-gas model, in particular they gave a crystallization result by showing that the one-dimensional lattice $\\mathbb{z}$ is a minimizer for the so-called renormalized energy which they obtained as a limit of the $N$-particle Log-gas Hamiltonian for $N \\to \\infty$. However, this minimizer is not unique among infinite point configurations (for example small perturbations of $\\mathbb{z}$ leave the renormalized energy unchanged). In this paper, we establish that uniqueness holds at the level of (stationary) point processes, the only minimizer being given by averaging $\\mathbb{z}$ over a choice of the origin in $[0,1]$. This is proved by showing a quantitative estimate on the two-point correlation function of a process in terms of its renormalized energy.

Thomas Lebl

2014-08-10T23:59:59.000Z

352

Hanford Site waste minimization and pollution prevention awareness program plan. Revision 1  

SciTech Connect (OSTI)

The Hanford Site WMin/P2 program is an organized, comprehensive, and continual effort to systematically reduce the quantity and toxicity of hazardous, radioactive, mixed, and sanitary wastes; conserve resources; and prevent or minimize pollutant releases to all environmental media from all Site activities. The Hanford Site WMin/P2 program plan reflects national and DOE waste minimization and pollution prevention goals and policies, and represents an ongoing effort to make WMin/P2 part of the Site operating philosophy. In accordance with these policies, a hierarchical approach to environmental management has been adopted and is applied to all types of polluting and waste generating activities. Pollution prevention and waste minimization through source reduction are first priority in the Hanford WMin/P2 program, followed by environmentally safe recycling. Treatment to reduce the quantity, toxicity, and/or mobility will be considered only when prevention or recycling are not possible or practical. Environmentally safe disposal is the last option.

Not Available

1994-05-01T23:59:59.000Z

353

Study of design parameters for minimizing the cost of electricity of tokamak fusion power reactors  

Science Journals Connector (OSTI)

The impact of the design parameters on the cost of electricity (COE) is studied through a parameter survey in order to minimize the COE. Three kinds of operating modes are considered; first stability (FS), second stability (SS) and reversed shear (RS). The COE is calculated by a coupled physics-engineering-cost computer system code. Deuterium-tritium type, 1000 MW(e) at electric bus bar, steady state tokamak reactors with aspect ratios A from 3 to 4.5 are assumed. Several criteria are used for the parameter survey; for example, (a) the thermal to electrical conversion efficiency is assumed to be 34.5% using water as a coolant; (b) the average neutron wall load must not exceed 5 MW/m2 for plasma major radius Rp > 5 m; (c) a 2 MeV neutral beam injector (NBI) is applied. It is found that the RS operating mode most minimizes the COE among the three operating modes by reducing the cost of the current drive and the coils and structures. The cost-minimized RS reactor can attain high fbs, high ?N and low q95 at the same time, which results in a short Rp of 5.1 m, a low Bmax of the maximum magnetic toroidal field (TF) of the TF coils of 13 T and a low A of 3.0. It can be concluded that this cost-minimized RS reactor is the most cost-minimized within the frameworks of this study. This cost-minimized RS reactor has two advantages: one is that a Bmax = 13 T TF coil can be made by use of ITER coil technology and the other is that the same cooling technology as that of ITER (water cooling) can be used.

K. Tokimatsu; K. Okano; T. Yoshida; K. Yamaji; M. Katsurai

1998-01-01T23:59:59.000Z

354

Likelihood analysis of the next-to-minimal supergravity motivated model  

SciTech Connect (OSTI)

In anticipation of data from the Large Hadron Collider (LHC) and the potential discovery of supersymmetry, we calculate the odds of the next-to-minimal version of the popular supergravity motivated model (NmSuGra) being discovered at the LHC to be 4:3 (57%). We also demonstrate that viable regions of the NmSuGra parameter space outside the LHC reach can be covered by upgraded versions of dark matter direct detection experiments, such as super-CDMS, at 99% confidence level. Due to the similarities of the models, we expect very similar results for the constrained minimal supersymmetric standard model (CMSSM)

Balazs, Csaba; Carter, Daniel [School of Physics, Monash University, Melbourne Victoria 3800 (Australia)

2009-10-27T23:59:59.000Z

355

Application of L1 Minimization Technique to Image Super-Resolution and Surface Reconstruction  

E-Print Network [OSTI]

the minimization on ?1 while the solution is kept fixed in ?2. Solid points represent fixed nodal values, while hollow points represent the nodal values to be determined by the minimization algorithm. Degrees of freedoms are indexed from 0 to 12.... On the other hand Augmented Lagrangian method reduces L1 norm at an initial relatively fast rate but they slow down at fine tuning. 21 4.5?103 5.0?103 5.5?103 6.0?103 0 50 100 150 200 SolidTriangleTriangle SolidTriangleTriangle Solid...

Talavatifard, Habiballah

2013-05-06T23:59:59.000Z

356

Development and test case application of a waste minimization project evaluation method  

SciTech Connect (OSTI)

This paper describes a formal process for selecting, from a diverse set of proposed waste minimization activities, those activities that provide the greatest benefit to Department of Energy (DOE). A methodology for evaluating and prioritizing proposals was developed to illustrate how the selection process works and what types of data are required to characterize waste minimization activities. It is clearly impossible to remove all aspects of subjective judgment from the proposal selection process. With this important consideration in mind, the methodology presented is put forth to enhance, not replace, the traditional DOE decision-making process. 5 refs., 2 figs., 1 tab.

Kjeldgaard, E.A. (Sandia National Labs., Albuquerque, NM (USA)); Saloio, J.H.; Varnado, G.B. (ERC Environmental and Energy Services Co., Albuquerque, NM (USA))

1990-01-01T23:59:59.000Z

357

Cosmological perturbations in theories with non-minimal coupling between curvature and matter  

SciTech Connect (OSTI)

In this work, we examine how the presence of a non-minimal coupling between spacetime curvature and matter affects the evolution of cosmological perturbations on a homogeneous and isotropic Universe, and hence the formation of large-scale structure. This framework places constraints on the terms which arise due to the coupling with matter and, in particular, on the modified growth of matter density perturbations. We derive approximate analytical solutions for the evolution of matter overdensities during the matter dominated era and discuss the compatibility of the obtained results with the hypothesis that the late time acceleration of the Universe is driven by a non-minimal coupling.

Bertolami, Orfeu [Departamento de Fsica e Astronomia, Faculdade de Cincias, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto (Portugal); Frazo, Pedro; Pramos, Jorge, E-mail: orfeu.bertolami@fc.up.pt, E-mail: pedro.frazao@ist.utl.pt, E-mail: paramos@ist.edu [Instituto de Plasmas e Fuso Nuclear, Instituto Superior Tcnico, Universidade Tcnica de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa (Portugal)

2013-05-01T23:59:59.000Z

358

Comparison of the efficiency of N2 and NH3 plasma treatments to improve the adhesion of PP films to in situ deposited Al coatings. Study of ageing phenomena in terms of acid-base properties  

Science Journals Connector (OSTI)

This paper reports on the characteristics of polypropylene (PP) treated at two different frequencies, 70 kHz and 13.56 MHz, in two plasma atmospheres, NH3 and N2 plasmas. Chemical modifications created on the plasma-treated material were investigated by different complementary surface analytical techniques (X-ray photoelectron spectroscopy (XPS) and contact angle measurements), which revealed a higher reactivity of the NH3 plasma. The incorporation of nitrogen plays an important role as revealed by the adhesion study of thermally evaporated aluminium with treated PP: the measured peel strengths were two times higher for NH3-treated surfaces than for N2-treated ones, with XPS measurements showing a sharper increase of N/C ratio as a function of treatment time for the former treatment. Ageing of the PP pretreated in NH3 was also studied in terms of surface acid-base properties. The work of adhesion, calculated from contact angle measurements, showed a distinct dependence on the pH value of the test liquids and good correlations were obtained with peel test results. The basic character of the NH3-treated PP disappears with ageing, leading to an amphoteric surface.

M. Tatoulian; F. Arefi-Khonsari; N. Shahidzadeh-Ahmadi; J. Amouroux

1995-01-01T23:59:59.000Z

359

Minimizing Shortfall  

E-Print Network [OSTI]

BarraExtremeRiskmodel. 2.1VolatilityandShortfallasRiskMeasures Volatility,orthesquarerootofgains and losses. Volatility is the central concept

Goldberg, Lisa R.; Hayes, Michael Y.; Mahmoud, Ola

2011-01-01T23:59:59.000Z

360

Implementation of Waste Minimization at a complex R&D site  

SciTech Connect (OSTI)

Under the 1994 Waste Minimization/Pollution Prevention Crosscut Plan, the Department of Energy (DOE) has set a goal of 50% reduction in waste at its facilities by the end of 1999. Each DOE site is required to set site-specific goals to reduce generation of all types of waste including hazardous, radioactive, and mixed. To meet these goals, Argonne National Laboratory (ANL), Argonne, IL, has developed and implemented a comprehensive Pollution Prevention/Waste Minimization (PP/WMin) Program. The facilities and activities at the site vary from research into basic sciences and research into nuclear fuel cycle to high energy physics and decontamination and decommissioning projects. As a multidisciplinary R&D facility and a multiactivity site, ANL generates waste streams that are varied, in physical form as well as in chemical constituents. This in turn presents a significant challenge to put a cohesive site-wide PP/WMin Program into action. In this paper, we will describe ANL`s key activities and waste streams, the regulatory drivers for waste minimization, and the DOE goals in this area, and we will discuss ANL`s strategy for waste minimization and it`s implementation across the site.

Lang, R.E. [USDOE Chicago Operations Office, Argonne, IL (United States); Thuot, J.R.; Devgun, J.S. [Argonne National Lab., IL (United States)

1995-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Dexterity optimization by port placement in robot-assisted minimally invasive surgery  

E-Print Network [OSTI]

Dexterity optimization by port placement in robot-assisted minimally invasive surgery Shaun Selha1 port triplets ranked according to tool dexterity and endoscopic view quality at each surgical site involved in a procedure. A computer simulation allows the surgeon to select from among the proposed port

Dupont, Pierre

362

A majorization-minimization approach to design of power distribution networks  

SciTech Connect (OSTI)

We consider optimization approaches to design cost-effective electrical networks for power distribution. This involves a trade-off between minimizing the power loss due to resistive heating of the lines and minimizing the construction cost (modeled by a linear cost in the number of lines plus a linear cost on the conductance of each line). We begin with a convex optimization method based on the paper 'Minimizing Effective Resistance of a Graph' [Ghosh, Boyd & Saberi]. However, this does not address the Alternating Current (AC) realm and the combinatorial aspect of adding/removing lines of the network. Hence, we consider a non-convex continuation method that imposes a concave cost of the conductance of each line thereby favoring sparser solutions. By varying a parameter of this penalty we extrapolate from the convex problem (with non-sparse solutions) to the combinatorial problem (with sparse solutions). This is used as a heuristic to find good solutions (local minima) of the non-convex problem. To perform the necessary non-convex optimization steps, we use the majorization-minimization algorithm that performs a sequence of convex optimizations obtained by iteratively linearizing the concave part of the objective. A number of examples are presented which suggest that the overall method is a good heuristic for network design. We also consider how to obtain sparse networks that are still robust against failures of lines and/or generators.

Johnson, Jason K [Los Alamos National Laboratory; Chertkov, Michael [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

363

Multi-Task Feature Learning Via Efficient 2,1-Norm Minimization Department of CSE  

E-Print Network [OSTI]

Multi-Task Feature Learning Via Efficient 2,1-Norm Minimization Jun Liu Department of CSE Arizona can be derived in the probabilistic framework by assuming a suitable prior from the exponential family. A key building block in solving the reformulations is the Euclidean pro- jection. We show

Liu, Huan

364

Nest graphs and minimal complete symmetry groups for magic Sudoku variants  

E-Print Network [OSTI]

, already minimal and complete. 2 Modular-magic Sudoku A Sudoku board is a 9 grid with nine 3 ? 3 designated blocks. We call the rows, columns and diagonals of these blocks mini-rows, mini-columns and mini block is a magic square modulo 9, in the sense that the entries of every mini-row, mini-column and mini

Lorch, John D.

365

Electric Vehicle Induction Motor DSVM-DTC with Torque Ripple Minimization  

E-Print Network [OSTI]

Electric Vehicle Induction Motor DSVM-DTC with Torque Ripple Minimization Farid Khoucha1 a sensorless DSVM-DTC of an induction motor that propels an electrical vehicle or a hybrid one. The drive uses, as demonstrated in experimental results. Keywords: Electric vehicle (EV), induction motor, Discrete Space Vector

Paris-Sud XI, Université de

366

Minimizing Pathogen Transmission at Primate Ecotourism Destinations: The Need for Input from Travel Medicine  

E-Print Network [OSTI]

I SM T 229 EDITORIAL Minimizing Pathogen Transmission at Primate Ecotourism Destinations: The Need. Ecotourism is a sustainable version of nature tourism with the following components: · Contributes for rural people (p. 10).3 Ecotourism accounts for a significant proportion of all international tourism

Muehlenbein, Michael

367

Minimal energy for elastic inclusions By Hans Knupfer and Robert V. Kohn  

E-Print Network [OSTI]

Minimal energy for elastic inclusions By Hans Kn¨upfer and Robert V. Kohn Courant Institute, New York University Mercer Street 251, New York, NY 10012, USA We consider a variant of the isoperimetric the emergence of the new phase, the interfacial energy provides an energy barrier for the creation and growth

368

Heteroclinic standing waves in defocussing DNLS equations -- Variational approach via energy minimization  

E-Print Network [OSTI]

We study heteroclinic standing waves (dark solitons) in discrete nonlinear Schr\\"{o}dinger equations with defocussing nonlinearity. Our main result is a quite elementary existence proof for waves with monotone and odd profile, and relies on minimizing an appropriately defined energy functional. We also study the continuum limit and the numerical approximation of standing waves.

Michael Herrmann

2010-02-08T23:59:59.000Z

369

Distributed Load Demand Scheduling in Smart Grid to Minimize Electricity Generation Cost  

E-Print Network [OSTI]

is to perform demand side management (DSM) [1], which aims at matching the consum- ers' electricity demand between electricity consumption and generation. On the consumption side, electric demand ramps upDistributed Load Demand Scheduling in Smart Grid to Minimize Electricity Generation Cost Siyu Yue

Pedram, Massoud

370

LightFlood: Minimizing Redundant Messages and Maximizing the Scope of  

E-Print Network [OSTI]

of redundant messages. Our analysis and simulation experiments show that the LightFlood scheme provides a lowLightFlood: Minimizing Redundant Messages and Maximizing the Scope of Peer-to-Peer Search Song Abstract--Flooding is a fundamental file search operation in unstructured peer-to-peer (P2P) file sharing

371

Minimal supporting subtrees for the free energy of polymers on disordered trees  

E-Print Network [OSTI]

Minimal supporting subtrees for the free energy of polymers on disordered trees Peter M, the free energy is supported by a random tree of positive exponential growth rate, which is strictly Abstract: We consider a model of directed polymers on a regular tree with a disorder given by independent

372

Bath Institute for Complex Systems Minimal supporting subtrees for the free energy of polymers  

E-Print Network [OSTI]

. We show that, for high temperatures, the free energy is supported by a random tree of positiveBICS Bath Institute for Complex Systems Minimal supporting subtrees for the free energy of polymers on disordered trees Peter M¨orters and Marcel Ortgiese Bath Institute For Complex Systems Preprint 10/08 (2008

Burton, Geoffrey R.

373

Minimizing Energy and Maximizing Network Lifetime Multicasting in Wireless Ad Hoc Networks  

E-Print Network [OSTI]

trees with multiple optimization objectives. A. Related Work A number of energy-aware broadcast] that the problem of finding a minimum-energy broadcast tree is NP-hard. Particularly in [2], they have shownMinimizing Energy and Maximizing Network Lifetime Multicasting in Wireless Ad Hoc Networks Weifa

Liang, Weifa

374

TECHNIQUES FOR MINIMIZING AND MONITORING THE IMPACT OF PIPELINE CONSTRUCTION ON COASTAL STREAMS1  

E-Print Network [OSTI]

TECHNIQUES FOR MINIMIZING AND MONITORING THE IMPACT OF PIPELINE CONSTRUCTION ON COASTAL STREAMS1 resources dur- ing construction of an oil and gas pipeline that crossed coastal reaches of 23 perennial, and representatives of Santa Barbara County. The Point Arguello pipeline was recently constructed by Chevron U

Standiford, Richard B.

375

Project Controls to Minimize Cost and Schedule Overruns: A Model, Research Agenda, and Initial Results  

E-Print Network [OSTI]

1 of 27 Project Controls to Minimize Cost and Schedule Overruns: A Model, Research Agenda been successfully applied to the study of projects for many years. While this modeling has clearly defined the structures which create project dynamics, it has been less helpful in providing explicit

Ford, David N.

376

Towards the development of a humanoid arm by minimizing interaction forces through minimum impedance control  

E-Print Network [OSTI]

in the development of a robotic arm with minimal impedance. The development of such an arm is use- ful for gentle exploration of unknown objects in un- structured environments. Similar to a human, the robotic arm should- velopment of a humanoid arm using the Whole Arm Manipulator (WAM) robot. Through careful model- ing

377

Optimal Preemptive Semi-Online Scheduling to Minimize Makespan on Two Related Machines  

E-Print Network [OSTI]

Optimal Preemptive Semi-Online Scheduling to Minimize Makespan on Two Related Machines Leah Epstein uni- formly related machines. We analyze the algorithms as a function of the speed ratio (q #21; 1) between the two machines. We design algorithms of optimal competitive ratio for all values of q, and show

Epstein, Leah

378

On Approximate Non-submodular Minimization via Tree-Structured Supermodularity  

E-Print Network [OSTI]

the submodular energy alone. For example, a supermodular forest or tree could be used to add encouragementOn Approximate Non-submodular Minimization via Tree-Structured Supermodularity Yoshinobu Kawahara Jeffery A. Bilmes Dept. of Electrical Engineering, University of Washington, {rkiyer

Hochberg, Michael

379

Spill-Minimizing Rules For Parallel Reservoirs: Quantity and Quality Javier Paredes  

E-Print Network [OSTI]

to incorporate constraints on conservative constituents. Willey et al. (1996) #12;modified the water allocation is considered, with different pools having different water quality characteristics. This fragmentation This paper presents a spill-minimizing operating policy for refill of reservoirs in parallel for water supply

Lund, Jay R.

380

Waste minimization for commercial radioactive materials users generating low-level radioactive waste  

SciTech Connect (OSTI)

The objective of this document is to provide a resource for all states and compact regions interested in promoting the minimization of low-level radioactive waste (LLW). This project was initiated by the Commonwealth of Massachusetts, and Massachusetts waste streams have been used as examples; however, the methods of analysis presented here are applicable to similar waste streams generated elsewhere. This document is a guide for states/compact regions to use in developing a system to evaluate and prioritize various waste minimization techniques in order to encourage individual radioactive materials users (LLW generators) to consider these techniques in their own independent evaluations. This review discusses the application of specific waste minimization techniques to waste streams characteristic of three categories of radioactive materials users: (1) industrial operations using radioactive materials in the manufacture of commercial products, (2) health care institutions, including hospitals and clinics, and (3) educational and research institutions. Massachusetts waste stream characterization data from key radioactive materials users in each category are used to illustrate the applicability of various minimization techniques. The utility group is not included because extensive information specific to this category of LLW generators is available in the literature.

Fischer, D.K.; Gitt, M.; Williams, G.A.; Branch, S. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Otis, M.D.; McKenzie-Carter, M.A.; Schurman, D.L. (Science Applications International Corp., Idaho Falls, ID (United States))

1991-07-01T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Waste minimization for commercial radioactive materials users generating low-level radioactive waste. Revision 1  

SciTech Connect (OSTI)

The objective of this document is to provide a resource for all states and compact regions interested in promoting the minimization of low-level radioactive waste (LLW). This project was initiated by the Commonwealth of Massachusetts, and Massachusetts waste streams have been used as examples; however, the methods of analysis presented here are applicable to similar waste streams generated elsewhere. This document is a guide for states/compact regions to use in developing a system to evaluate and prioritize various waste minimization techniques in order to encourage individual radioactive materials users (LLW generators) to consider these techniques in their own independent evaluations. This review discusses the application of specific waste minimization techniques to waste streams characteristic of three categories of radioactive materials users: (1) industrial operations using radioactive materials in the manufacture of commercial products, (2) health care institutions, including hospitals and clinics, and (3) educational and research institutions. Massachusetts waste stream characterization data from key radioactive materials users in each category are used to illustrate the applicability of various minimization techniques. The utility group is not included because extensive information specific to this category of LLW generators is available in the literature.

Fischer, D.K.; Gitt, M.; Williams, G.A.; Branch, S. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Otis, M.D.; McKenzie-Carter, M.A.; Schurman, D.L. [Science Applications International Corp., Idaho Falls, ID (United States)

1991-07-01T23:59:59.000Z

382

MINIMIZATION OF SENSOR USAGE FOR TARGET TRACKING IN A NETWORK OF IRREGULARLY SPACED SENSORS  

E-Print Network [OSTI]

MINIMIZATION OF SENSOR USAGE FOR TARGET TRACKING IN A NETWORK OF IRREGULARLY SPACED SENSORS Thomas address the following scenario: a single target moves through a field of stationary sensors with known locations. At each time epoch, each sensor is either active or not; each active sensor outputs either target

Morrell, Darryl

383

Formulating an Optimization Problem for Minimization of Losses due to Utilities  

E-Print Network [OSTI]

Formulating an Optimization Problem for Minimization of Losses due to Utilities Anna Lindholm.lindholm@control.lth.se). Abstract: Utilities, such as steam and cooling water, are often shared between several production areas at industrial sites, and the effects of disturbances in utilities could thus be hard to predict. In addition

Como, Giacomo

384

Hiding Traffic with Camouflage: Minimizing Message Delay in the Smart Grid under Jamming  

E-Print Network [OSTI]

Hiding Traffic with Camouflage: Minimizing Message Delay in the Smart Grid under Jamming Zhuo Lu}@ncsu.edu Email: cliff.wang@us.army.mil Abstract--The smart grid is an emerging cyber-physical system that integrates power infrastructures with information technolo- gies. In the smart grid, wireless networks have

Wang, Wenye

385

Minimizing Nonspecific Adsorption in Protein Biosensors that Utilize Electrochemical Impedance Spectroscopy  

E-Print Network [OSTI]

, such as optical and acoustic methods.3-6 In addition, electrochemical biosensors often have lower noise levels are often sensitive to environmental noise. Electrochemical glucose biosensors detect glucose by measuringMinimizing Nonspecific Adsorption in Protein Biosensors that Utilize Electrochemical Impedance

Suni, Ian Ivar

386

Power Minimization Techniques at the RT-Level and Afshin Abdollahi and Massoud Pedram  

E-Print Network [OSTI]

1 Power Minimization Techniques at the RT-Level and Below Afshin Abdollahi and Massoud Pedram Dept. of Electrical Engineering University of Southern California Los Angeles, CA 90089 U.S.A. Abstract ­ Power consumption and power-related issues have become a first-order concern for most designs and loom

Pedram, Massoud

387

An Efficient P300-based Brain-Computer Interface with Minimal Calibration Time  

E-Print Network [OSTI]

An Efficient P300-based Brain-Computer Interface with Minimal Calibration Time Fabien LOTTE, Cuntai {fprlotte,ctguan}@i2r.a-star.edu.sg 1 Introduction Brain-Computer Interfaces (BCI) are communication systems are based on Elec- troEncephaloGraphy (EEG) as the measure of brain activity [1]. So far, BCI have been

Boyer, Edmond

388

Minimizing Building Electricity Costs in a Dynamic Power Market: Algorithms and Impact on Energy Conservation  

E-Print Network [OSTI]

Minimizing Building Electricity Costs in a Dynamic Power Market: Algorithms and Impact on Energy of Computing, The Hong Kong Polytechnic University, Hong Kong, P. R. China 2 Department of Electrical and the electricity bills nowa- days are leading to unprecedented costs. Electricity price is market-based and dynamic

Wang, Dan

389

Minimizing the Operational Cost of Data Centers via Geographical Electricity Price Diversity  

E-Print Network [OSTI]

Minimizing the Operational Cost of Data Centers via Geographical Electricity Price Diversity amounts of electric power, which lead to high operational costs of cloud service providers. Reducing cloud environment by incorporating the diversity of time-varying electricity prices in different regions

Liang, Weifa

390

Consistently Orienting Facets in Polygon Meshes by Minimizing the Dirichlet Energy of Generalized Winding Numbers  

E-Print Network [OSTI]

orienting facets in polygon meshes by minimizing the Dirichlet energy of generalized winding numbers. While based on the Dirichlet energy of the generalized winding number. Our motivation came from the fact Dirichlet energy of the corresponding generalized winding number. 2 Method 2.1 Patch extraction

Plotkin, Joshua B.

391

Dynamic Voltage Scaling for Systemwide Energy Minimization in Real-Time Embedded Systems  

E-Print Network [OSTI]

%. We show that our scheduling approach minimizes the total static and dynamic energy consumption increase the total energy consumption of the system. A minimum power consumption is associated with keeping the processorenergy consumption as opposed to the entire system energy consumption. The slowdown resulting from DVS

Gupta, Rajesh

392

Exact calculation of the minimal exposure for the secure detection of a transmission contrast signal  

Science Journals Connector (OSTI)

......BACKGROUND The calculations presented here are...photons however does. The main theory...model developed here does not consider single...acquisition process electronic noise, quantisation...Van Metter R. L. Handbook of Medical Imaging...89-106. Exact calculation of the minimal exposure......

F. H. Schfer; C. Hoeschen

2010-01-01T23:59:59.000Z

393

Inexact Restoration method for minimization problems arising in electronic structure calculations  

E-Print Network [OSTI]

Inexact Restoration method for minimization problems arising in electronic structure calculations arising in electronic structure calculations. The solution of the problem is the closed-shell density structure calculation consists of finding the wave functions from which the spatial electronic distribution

Martínez, José Mario

394

Minimizing the Energy Cost of Throughput in a Linear Pipeline by Opportunistic Time Borrowing  

E-Print Network [OSTI]

Minimizing the Energy Cost of Throughput in a Linear Pipeline by Opportunistic Time Borrowing a technique to optimize the energy-delay product of a synchronous linear pipeline circuit with dynamic error and clock frequency of the design by exploiting slacks that are present in various stages of the pipeline

Pedram, Massoud

395

The anatomy of electroweak symmetry breaking Tome II: The Higgs bosons in the Minimal Supersymmetric Model  

Science Journals Connector (OSTI)

The second part of this review is devoted to the Higgs sector of the Minimal Supersymmetric Standard Model. The properties of the neutral and charged Higgs bosons of the extended Higgs sector are summarized and their decay modes and production mechanisms at hadron colliders and at future lepton colliders are discussed.

Abdelhak Djouadi

2008-01-01T23:59:59.000Z

396

MINIMAL AND MAXIMAL OPERATOR SPACES AND OPERATOR SYSTEMS IN ENTANGLEMENT THEORY  

E-Print Network [OSTI]

MINIMAL AND MAXIMAL OPERATOR SPACES AND OPERATOR SYSTEMS IN ENTANGLEMENT THEORY NATHANIEL JOHNSTON-maximal operator spaces and operator systems, and investigate their relationships with the basic separability operator systems that were recently introduced and show that their cones of positive elements are exactly

Paulsen, Vern

397

DECENTRALIZED VOLTAGE CONTROL TO MINIMIZE DISTRIBUTION LOSSES IN AN ISLANDED MICROGRID  

E-Print Network [OSTI]

power sources and energy storage systems such as batteries requires new power and voltage control-time voltage control algorithm that minimizes power losses for a microgrid supported by inverter based Microgrids can bring electricity power to rural communities or isolated military forward operation bases

Peng, Huei

398

Sleep with Guilt and Work Faster to Minimize Flow plus Energy  

E-Print Network [OSTI]

to reduce energy usage. Re- cently there is a lot of theory research on online job scheduling taking speedSleep with Guilt and Work Faster to Minimize Flow plus Energy Tak-Wah Lam1, , Lap-Kei Lee1 , Hing. {isaacto, pwong}@liverpool.ac.uk Abstract. In this paper we extend the study of flow-energy scheduling

Wong, Prudence W.H.

399

Theory and Algorithms for Software Pipelining with Minimal Cost on Nested Loops  

E-Print Network [OSTI]

Theory and Algorithms for Software Pipelining with Minimal Cost on Nested Loops Qingfeng Zhuge. However, little research has been done for the software pipelining problem on nested loops. The existing software pipelining techniques for single loops can only explore the innermost loop parallelism of a nested

Sha, Edwin

400

On global minimizers of repulsiveattractive power-law interaction energies  

Science Journals Connector (OSTI)

...repulsive-attractive power-law interaction energies Jose Antonio Carrillo 1 Michel Chipot...repulsive-attractive power-law interaction energies that occur in many biological and physical...through numerical simulations. interaction energy|global discrete minimizers|swarming...

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Minimal Experimental Data Set Required for Estimating PCP-SAFT Parameters  

Science Journals Connector (OSTI)

Minimal Experimental Data Set Required for Estimating PCP-SAFT Parameters ... The pure-component parameters of the Perturbed Chain Polar-Statistical Associating Fluid Theory (PCP-SAFT) equation of state are usually fitted to experimental data over broad temperature ranges. ... PCP-SAFT Equation of State ...

Katja Albers; Gabriele Sadowski

2011-09-12T23:59:59.000Z

402

A PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM  

E-Print Network [OSTI]

in the context of eigen- value optimization, and [8] gives an overview of the history. The bases for the presentA PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM EIGENVALUE function, semi-infinite problem, H-norm. 1. Introduction. Proximity control for bundle methods has been

Noll, Dominikus

403

A PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM  

E-Print Network [OSTI]

in the context of eigen- value optimization, and [9] gives an overview of the history. The bases for the presentA PROXIMITY CONTROL ALGORITHM TO MINIMIZE NONSMOOTH AND NONCONVEX SEMI-INFINITE MAXIMUM EIGENVALUE function, semi-infinite problem, H-norm. 1. Introduction. Proximity control for bundle methods has been

Noll, Dominikus

404

Phenomenology of the minimal B ? L Model: the Higgs sector at the Large Hadron Collider and future linear colliders.  

E-Print Network [OSTI]

??This thesis is devoted to the study of the phenomenology of the Higgs sector of the minimal B ?L extension of the Standard Model at (more)

Pruna, Giovanni Marco

2011-01-01T23:59:59.000Z

405

Volumen 1 N. 2 Julio Diciembre 2011  

E-Print Network [OSTI]

___________________________________________________________________________________________________ ________________________________________________________________________________________ e-colabora "Revista de ciencia, educación, innovación y cultura apoyadas por Redes de Tecnología ___________________________________________________________________________________________________ ________________________________________________________________________________________ e-colabora "Revista de ciencia, educación, innovación y cultura apoyadas por Redes de Tecnología

406

6, 42734324, 2006 Stratospheric N2O  

E-Print Network [OSTI]

Discussion EGU Abstract A comprehensive set of stratospheric balloon and aircraft samples was analyzed

Paris-Sud XI, Université de

407

JOURNAL DE PHYSIQUE CoZZoque C9, suppl6ment au nO1l, Tome 41, novembre 2980, page C9-203 THE HIGH GAIN C02 LASER BY EFFECTIVE MIXING OF N2 AND C02 GAS  

E-Print Network [OSTI]

GAIN C02 LASER BY EFFECTIVE MIXING OF N2 AND C02 GAS H. Hara and A. Fujisawa. First Research Center is described in which vibrationally excited N2 gas and cold Con gas are mixed effectively by means of the diffusion of C02 gas into Ng gas. By using different ty- pes of mixing techniques, a maximum gain of 1 1 m

Boyer, Edmond

408

E-MiLi: Energy-Minimizing Idle Listening in Wireless Networks Xinyu Zhang and Kang G. Shin  

E-Print Network [OSTI]

}@eecs.umich.edu ABSTRACT WiFi interface is known to be a primary energy consumer in mo- bile devices, and idle listeningE-MiLi: Energy-Minimizing Idle Listening in Wireless Networks Xinyu Zhang and Kang G. Shin with PSM enabled. To remedy this problem, we propose E-MiLi (Energy-Minimizing idle Listening) that re

Shihada, Basem

409

978-1-4244-4439-7/09/$25.00 c 2009 IEEE Minimizing Energy Consumption by Power-Efficient Radio  

E-Print Network [OSTI]

978-1-4244-4439-7/09/$25.00 c 2009 IEEE Minimizing Energy Consumption by Power-Efficient Radio herve.rivano@sophia.inria.fr Abstract In this paper, we investigate on minimizing the energy consumption a piecewise linear convex function that pro- vides a good approximation of the energy consumption on the links

Paris-Sud XI, Université de

410

PER-NODE POWER MINIMAL MULTICAST TREES WHICH MAXIMIZE THE TIME-TO-FIRST-FAILURE IN ENERGY CONSTRAINED STATIC WIRELESS  

E-Print Network [OSTI]

PER-NODE POWER MINIMAL MULTICAST TREES WHICH MAXIMIZE THE TIME-TO-FIRST-FAILURE IN ENERGY as the time till the first node in the network runs out of battery energy, and minimizing the total power in energy constrained static wireless networks. It is shown in [6] that simply optimizing the TTFF criterion

Arabshahi, Payman

411

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 5, NO. 11, NOVEMBER 2006 3087 Energy Minimization for Real-Time Data Gathering  

E-Print Network [OSTI]

objective is to minimize the overall energy cost of the sensor nodes in the data gathering tree subjectIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 5, NO. 11, NOVEMBER 2006 3087 Energy problem of energy minimization for data gathering over a multiple-sources single-sink communication

Krishnamachari, Bhaskar

412

Minimizing the Number of Inputs while Applying Adaptive Test Cases Guy-Vincent Jourdan, Hasan Ural and Nejib Zaguia  

E-Print Network [OSTI]

1 Minimizing the Number of Inputs while Applying Adaptive Test Cases Guy-Vincent Jourdan, Hasan engineering, adaptive testing, adaptive test cases, minimization of test inputs 1. Introduction State is to construct a set of test cases to be employed during testing of potential implementations of the specified

Jourdan, Guy-Vincent

413

Minimization of energy per particle among Bravais lattices in R2 Lennard-Jones and Thomas-Fermi cases  

E-Print Network [OSTI]

show some characterization results for the global minimizer of this energy and finally we also prove is triangular. AMS Classification: Primary 82B20 ; Secondary 52C15, 35Q40. Keywords: Lattice's energy ; Theta close to one and long range interaction. He showed that the global minimizer of the total energy

Paris-Sud XI, Université de

414

Minimization of energy per particle among Bravais lattices in R2 Lennard-Jones and Thomas-Fermi cases  

E-Print Network [OSTI]

show some characterization results for the global minimizer of this energy and finally we also prove is triangular. AMS Classification: Primary 82B20 ; Secondary 52C15, 35Q40. Keywords: Lattice energy ; Theta interaction. He showed that the global minimizer of the total energy is triangular. His method was adapted

Paris-Sud XI, Université de

415

Minimization of energy consumption in HVAC systems with data-driven models and an interior-point method  

E-Print Network [OSTI]

Minimization of energy consumption in HVAC systems with data-driven models and an interior online 13 June 2014 Keywords: HVAC Interior-point method Internal heat gain Multilayer perceptron-driven approach is applied to minimize energy consumption of a heating, ventilating, and air conditioning (HVAC

Kusiak, Andrew

416

Minimization of energy per particle among Bravais lattices in R2 Lennard-Jones and Thomas-Fermi cases  

E-Print Network [OSTI]

that the global min- imizer of the total energy is the triangular lattice of length one. His method was adapted. The problem is to find the configuration of the points which minimizes the total energy of interaction, calledMinimization of energy per particle among Bravais lattices in R2 : Lennard-Jones and Thomas

417

Abstract One way for animals to decrease energy ex-penditures is to minimize the cost of movement. For ani-  

E-Print Network [OSTI]

Abstract One way for animals to decrease energy ex- penditures is to minimize the cost of movement. For ani- mals dwelling on slopes, gravity can impart a large ener- getic cost to movement. For this reason (specifically hillslope angle) so as to minimize their energetic costs. Subterra- nean animals should also

Chadwick, Oliver A.

418

On the performance of greedy algorithms for energy minimization Anne Benoit, Paul Renaud-Goud and Yves Robert  

E-Print Network [OSTI]

Line-Greedy (with p = 5). Minimizing the total energy consumed by the processors to execute the job has recentlyOn the performance of greedy algorithms for energy minimization Anne Benoit, Paul Renaud Report RR-2010-27 Abstract We revisit the well-known greedy algorithm for scheduling independent jobs

419

The Waterpinch{trademark} approach to wastewater minimization: A chemical industry case study  

SciTech Connect (OSTI)

For over a decade, Pinch Analysis{trademark} has been applied to the optimization of energy utilization in process industry. One of the latest applications of pinch technology is waste minimization. Pinch Analysis{trademark} has been extended to deal with mass-transfer processes, as well as energy transfer processes. The latest technology in this field focuses on water conservation and wastewater minimization. It contains an integrated strategy for reuse, regeneration, and recycling of wastewater. It has recently been applied to a number of industrial projects, in which it was proven to be a valid and valuable method for significantly reducing fresh water consumption and/or wastewater effluent from several different types of industrial processes. This paper describes the methodology as well as the results from a recent industrial case study.

Kumana, J.D.; Flen, G.J. [Linnhoff March, Inc., Houston, TX (United States)

1995-12-31T23:59:59.000Z

420

An effective algorithm for mining closed sequential patterns and their minimal generators based on prefix trees  

Science Journals Connector (OSTI)

Sequential generator patterns and closed sequential patterns play an important role in data mining tasks. They are proposed to address difficult problems in mining sequential pattern and have often been used together to generate non-redundant rules. Based on their important role, this paper proposes an efficient algorithm called CloGen for mining closed sequential patterns and their minimal sequential generator patterns. The CloGen algorithm uses the parent-child relationship on prefix tree structure and inserts fields into each node on prefix tree to determine whether that is a minimal sequential generator pattern or closed sequential pattern. Experimental results show that the performance runtime of CloGen algorithm is much faster than that of other algorithms by more than one order of magnitude.

Thi-Thiet Pham; Jiawei Luo; Bay Vo

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Minimal anomaly-free chiral fermion sets and gauge coupling unification  

E-Print Network [OSTI]

We look for minimal chiral sets of fermions beyond the Standard Model that are anomaly-free and, simultaneously, vector-like particles with respect to colour SU(3) and electromagnetic U(1). We then study whether the addition of such particles to the Standard Model particle content allows for the unification of gauge couplings at a high energy scale, above $5.0 \\times 10^{15}$ GeV so as to be safely consistent with proton decay bounds. The possibility to have unification at the string scale is also considered. Inspired in grand unified theories, we also search for minimal chiral fermion sets that belong to SU(5) multiplets. Restricting to representations up to dimension 50, we show that some of these sets can lead to gauge unification at the GUT and/or string scales.

Cebola, Luis M; Felipe, R Gonzalez; Simoes, C

2014-01-01T23:59:59.000Z

422

Minimally Invasive Techniques for the Treatment of Benign Salivary Gland Obstruction: A Review  

SciTech Connect (OSTI)

This paper reviews the literature published on minimally invasive techniques developed to treat benign salivary gland obstruction. Techniques reported include extracorporeal and intracorporeal salivary gland lithotripsy, endoscopy and radiologically guided techniques for the extraction of calculi and dilatation of duct strictures. These techniques are described, their advantages and disadvantages discussed and their success rates compared. Recommendations are made on the most appropriate application of each technique.

Brown, Jackie E. [Department of Dental Radiology, Guy's Dental Hospital, Guy's and St. Thomas' Hospital Trust, London SE1 9RT (United Kingdom)

2002-10-15T23:59:59.000Z

423

Fitting Non-Minimally Coupled Scalar Models to Gold SnIa Dataset  

E-Print Network [OSTI]

Non-minimally coupled theories of special potentials are analyzed numerically. Such theories yield equations of state $\\omegadataset, we obtain results comparable with other models. A potential of the form $V(\\phi)=V_0e^{a_1\\phi^2}$ yields $\\chi^2_{min}=170.127$. Similar results are obtained for potentials of the form $V(\\phi)=V_0+a_1\\phi^n$.

Mingxing Luo; Qiping Su

2005-08-18T23:59:59.000Z

424

Non--perturbative bounds on the Higgs mass in the minimal standard model  

E-Print Network [OSTI]

This is a slightly extended version of the talk delivered at the Topical Workshop ``Non perturbative aspects of chiral gauge theories'', Accademia Nazionale dei Lincei, Roma, 9-11 March, 1992. Abstract: The Higgs mass in the minimal standard model is bounded by triviality and vacuum stability in the range 50--100 $GeV$ to 700--900 $GeV$. Recent results will be presented in brief and directions for future work will be proposed.

Herbert Neuberger

1992-05-01T23:59:59.000Z

425

Waste minimization/pollution prevention study of high-priority waste streams  

SciTech Connect (OSTI)

Although waste minimization has been practiced by the Metals and Ceramics (M&C) Division in the past, the effort has not been uniform or formalized. To establish the groundwork for continuous improvement, the Division Director initiated a more formalized waste minimization and pollution prevention program. Formalization of the division`s pollution prevention efforts in fiscal year (FY) 1993 was initiated by a more concerted effort to determine the status of waste generation from division activities. The goal for this effort was to reduce or minimize the wastes identified as having the greatest impact on human health, the environment, and costs. Two broad categories of division wastes were identified as solid/liquid wastes and those relating to energy use (primarily electricity and steam). This report presents information on the nonradioactive solid and liquid wastes generated by division activities. More specifically, the information presented was generated by teams of M&C staff members empowered by the Division Director to study specific waste streams.

Ogle, R.B. [comp.

1994-03-01T23:59:59.000Z

426

The Lennard-Jones Potential Minimization Problem for Prion AGAAAAGA Amyloid Fibril Molecular Modeling  

E-Print Network [OSTI]

The simplified Lennard-Jones (LJ) potential minimization problem is minimize f(x)=4\\sum_{i=1}^N \\sum_{j=1,jminimizer should be just at the point of the bottom of the LJ potential well. Based on this point, this paper tackles this problem illuminated by amyloid fibril molecular model building. The 3nhc.pdb, 3nve.pdb, 3nvf.pdb, 3nvg.pdb and 3nvh.pdb of PDB bank are used for the successful molecular modeling.

Jiapu Zhang

2011-06-08T23:59:59.000Z

427

Annual Report on Waste Generation and Waste Minimization Progress, 1991--1992  

SciTech Connect (OSTI)

This report is DOE`s first annual report on waste generation and waste minimization progress. Data presented in this report were collected from all DOE sites which met minimum threshold criteria established for this report. The fifty-seven site submittals contained herein represent data from over 100 reporting sites within 25 states. Radioactive, hazardous and sanitary waste quantities and the efforts to minimize these wastes are highlighted within the fifty-seven site submittals. In general, sites have made progress in moving beyond the planning phase of their waste minimization programs. This is evident by the overall 28 percent increase in the total amount of materials recycled from 1991 to 1992, as well as individual site initiatives. During 1991 and 1992, DOE generated a total of 279,000 cubic meters of radioactive waste and 243,000 metric tons of non-radioactive waste. These waste amounts include significant portions of process wastewater required to be reported to regulatory agencies in the state of Texas and the state of Tennessee. Specifically, the Pantex Plant in Texas treats an industrial wastewater that is considered by the Texas Water Commission to be a hazardous waste. In 1992, State regulated wastewater from the Pantex Plant represented 3,620 metric tons, 10 percent of the total hazardous waste generated by DOE. Similarly, mixed low-level wastewater from the TSCA Incinerator Facility at the Oak Ridge K-25 Site in Tennessee represented 55 percent of the total radioactive waste generated by DOE in 1992.

Not Available

1994-02-01T23:59:59.000Z

428

Strategic Minimization of High Level Waste from Pyroprocessing of Spent Nuclear Fuel  

SciTech Connect (OSTI)

The pyroprocessing of spent nuclear fuel results in two high-level waste streams--ceramic and metal waste. Ceramic waste contains active metal fission product-loaded salt from the electrorefining, while the metal waste contains cladding hulls and undissolved noble metals. While pyroprocessing was successfully demonstrated for treatment of spent fuel from Experimental Breeder Reactor-II in 1999, it was done so without a specific objective to minimize high-level waste generation. The ceramic waste process uses throw-away technology that is not optimized with respect to volume of waste generated. In looking past treatment of EBR-II fuel, it is critical to minimize waste generation for technology developed under the Global Nuclear Energy Partnership (GNEP). While the metal waste cannot be readily reduced, there are viable routes towards minimizing the ceramic waste. Fission products that generate high amounts of heat, such as Cs and Sr, can be separated from other active metal fission products and placed into short-term, shallow disposal. The remaining active metal fission products can be concentrated into the ceramic waste form using an ion exchange process. It has been estimated that ion exchange can reduce ceramic high-level waste quantities by as much as a factor of 3 relative to throw-away technology.

Simpson, Michael F.; Benedict, Robert W.

2007-09-01T23:59:59.000Z

429

Measurements of the reduced force coefficients for H2, N2, CO, and CO2 incident upon a solar panel array material, SiO2-coated Kapton, Kapton, and Z-93-coated Al  

Science Journals Connector (OSTI)

The reduced force coefficients were measured for H2, N2, CO, and CO2 incident upon a solar panel array material, SiO2-coated Kapton, Kapton, and Z-93-coated Al. The coefficients were determined by measuring both the magnitude and direction of the force exerted on the surfaces by molecular beams of the gases. Measurements were made at angles of incidence of 0, 25, 50, 75, and 85. The forces were measured using a torsion balance with the surfaces mounted on the end of the lever arm. The absolute flux densities of the molecular beams were measured using a second torsion balance with a beam stop mounted on the lever arm that nullified the force of the scattered molecules. Flux measurements were also made using the effusive method. Standard time-of-flight techniques were used to determine the flux-weighted average velocities of the molecular beams. These velocities ranged from 1670 to 4620 m/s. The overall uncertainty in the reduced force coefficient measurements was estimated to be less than 10%. These measurements were used to obtain the magnitude and direction of the flux-weighted average velocity of the scattered molecules, and also the flux-weighted translational kinetic energy of the scattered molecules. Analysis of this information provided insight into the microscopic details of the gas-surface interaction potential energy surface.

Steven R. Cook; Mark A. Hoffbauer; David D. Clark; Jon B. Cross

1998-07-01T23:59:59.000Z

430

Direct ab initio molecular dynamics study on a microsolvated S{sub N}2 reaction of OH{sup -}(H{sub 2}O) with CH{sub 3}Cl  

SciTech Connect (OSTI)

Reaction dynamics for a microsolvated S{sub N}2 reaction OH{sup -}(H{sub 2}O)+CH{sub 3}Cl have been investigated by means of the direct ab initio molecular dynamics method. The relative center-of-mass collision energies were chosen as 10, 15, and 25 kcal/mol. Three reaction channels were found as products. These are (1) a channel leading to complete dissociation (the products are CH{sub 3}OH+Cl{sup -}+H{sub 2}O: denoted by channel I), (2) a solvation channel (the products are Cl{sup -}(H{sub 2}O)+CH{sub 3}OH: channel II), and (3) a complex formation channel (the products are CH{sub 3}OH{center_dot}{center_dot}{center_dot}H{sub 2}O+Cl{sup -}: channel III). The branching ratios for the three channels were drastically changed as a function of center-of-mass collision energy. The ratio of complete dissociation channel (channel I) increased with increasing collision energy, whereas that of channel III decreased. The solvation channel (channel II) was minor at all collision energies. The selectivity of the reaction channels and the mechanism are discussed on the basis of the theoretical results.

Tachikawa, Hiroto [Division of Materials Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628 (Japan)

2006-10-07T23:59:59.000Z

431

Discovery potential of the next-to-minimal supergravity-motivated model  

Science Journals Connector (OSTI)

Applying a likelihood analysis to the next-to-minimal supergravity-motivated model, we identify parameter space regions preferred by present experimental limits from collider, astrophysical, and low energy measurements. We then show that favored regions are amenable to detection by a combination of the CERN Large Hadron Collider and an upgraded cryogenic dark matter search, provided that the more than three sigma discrepancy in the difference of the experimental and the standard theoretical values of the anomalous magnetic moment of the muon prevails in the future.

Csaba Balzs and Daniel Carter

2008-09-02T23:59:59.000Z

432

Non-geodesic motion in $f({\\mathcal G})$ gravity with non-minimal coupling  

E-Print Network [OSTI]

The dynamics of test particles in $f(\\mathcal G)$ modified Gauss-Bonnet gravity is investigated. It is shown that in $f({\\mathcal G})$ gravity models with non-minimal coupling to matter, particles experience an extra force normal to their four-velocities and as a result move along non- geodesic world-lines. The explicit form of the extra force depends on the function of the Gauss-Bonnet term included in coupling term. The effects of this force on the relative accelerations of particles are studied.

Morteza Mohseni

2009-11-14T23:59:59.000Z

433

Probing minimal supersymmetry at the LHC with the Higgs boson masses  

Science Journals Connector (OSTI)

The ATLAS and CMS collaborations report indications of a Higgs boson at Mh~125GeV. In addition, CMS data show a tenuous bump in the ZZ channel, at about 320GeV. We make the bold assumption that it might be the indication of a secondary line corresponding to the heaviest scalar Higgs boson of minimal supersymmetry, H, and discuss the viability of this hypothesis. We discuss also the case of a heavier H. The relevance of the decay channel is underlined.

L Maiani; A D Polosa; V Riquer

2012-01-01T23:59:59.000Z

434

A Minimal Two-band Model for the Superconducting Fe-pnictides  

SciTech Connect (OSTI)

Following the discovery of the Fe-pnictide superconductors, LDA band structure calculations showed that the dominant contributions to the spectral weight near the Fermi energy came from the Fe 3d orbitals. The Fermi surface is characterized by two hole surfaces around the {Lambda} point and two electron surfaces around the M point of the 2 Fe/cell Brillouin zone. Here, we describe a 2-band model that reproduces the topology of the LDA Fermi surface and exhibits both ferromagnetic and q = ({pi}, 0) spin density wave (SDW) fluctuations. We argue that this minimal model contains the essential low energy physics of these materials.

Raghu, S.

2010-03-25T23:59:59.000Z

435

Torque ripple minimization of axial laminations switched reluctance motor provided with digital lead controller  

Science Journals Connector (OSTI)

The switched reluctance motor (SRM) has great potential as an adjustable speed application due to its outstanding merits. One of the major problems is torque ripple which causes increased undesirable acoustic noise and possibly speed ripple. This paper investigates the application of a digital lead controller to the axial laminations switched reluctance motor (ALSRM) for the purpose of minimizing its torque ripples. The dynamic response of the ALSRM with the proposed controller is analyzed. The effectiveness of the proposed digital lead controller is then compared with that of the conventional PI controller.

Hany M. Hasanien; S.M. Muyeen; Junji Tamura

2010-01-01T23:59:59.000Z

436

Minimizing fuel emissions by optimizing vessel schedules in liner shipping with uncertain port times  

Science Journals Connector (OSTI)

We consider the problem of designing an optimal vessel schedule in the liner shipping route to minimize the total expected fuel consumption (and emissions) considering uncertain port times and frequency requirements on the liner schedule. The general optimal scheduling problem is formulated and tackled by simulation-based stochastic approximation methods. For special cases subject to the constraint of 100% service level, we prove the convexity and continuous differentiability of the objective function. Structural properties of the optimal schedule under certain conditions are obtained with useful managerial insights regarding the impact of port uncertainties. Case studies are given to illustrate the results.

Xiangtong Qi; Dong-Ping Song

2012-01-01T23:59:59.000Z

437

Energy conditions in $f(T)$ gravity with non-minimal torsion-matter coupling  

E-Print Network [OSTI]

The present paper examines the validity of energy bounds in a modified theory of gravity involving non-minimal coupling of torsion scalar and perfect fluid matter. In this respect, we formulate the general inequalities of energy conditions by assuming the flat FRW universe. For the application of these bounds, we particularly focus on two specific models that are recently proposed in literature and also choose the power law cosmology. We find the feasible constraints on the involved free parameters and evaluate their possible ranges graphically for the consistency of these energy bounds.

Zubair, M

2015-01-01T23:59:59.000Z

438

General Nonextremal Rotating Charged Goedel Black Holes in Minimal Five-Dimensional Gauged Supergravity  

SciTech Connect (OSTI)

I present the general exact solutions for nonextremal rotating charged black holes in the Goedel universe of five-dimensional minimal supergravity theory. They are uniquely characterized by four nontrivial parameters: namely, the mass m, the charge q, the Kerr equal rotation parameter a, and the Goedel parameter j. I calculate the conserved energy, angular momenta, and charge for the solutions and show that they completely satisfy the first law of black hole thermodynamics. I also study the symmetry and separability of the Hamilton-Jacobi and the massive Klein-Gordon equations in these Einstein-Maxwell-Chern-Simons-Goedel black hole backgrounds.

Wu Shuangqing [College of Physical Science and Technology, Central China Normal University, Wuhan, Hubei 430079 (China)

2008-03-28T23:59:59.000Z

439

922 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 42, NO. 4, APRIL 2007 Power and Area Minimization for Multidimensional  

E-Print Network [OSTI]

922 IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. 42, NO. 4, APRIL 2007 Power and Area Minimization of California, Berkeley, CA 94704 USA. Digital Object Identifier 10.1109/JSSC.2007.892191 battery life

Nikolic, Borivoje

440

Characterization of Trivalent Graphs with Minimal Eigenvalue Gap* Clemens Brand,a Barry Guiduli,b,** and Wilfried Imrichc,***  

E-Print Network [OSTI]

Characterization of Trivalent Graphs with Minimal Eigenvalue Gap* Clemens Brand,a Barry Guiduli is the mirror image of one of these blocks. Each interior block is of the type: or (2) We will refer

Babai, László

Note: This page contains sample records for the topic "n2 purged minimal" 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

$C^{1,\\alpha}$-Regularity of energy minimizing maps from a 2-dimentional domain into a Finsler space  

E-Print Network [OSTI]

We show $C^{1,\\alpha}$-regularity for energy minimizing maps from a 2-dimensional Riemannian manifold into a Finsler space $(\\R^n, F)$ with a Finsler structure $F(u,X)$.

Tachikawa, Atsushi

2011-01-01T23:59:59.000Z

442

Annual Waste Minimization Summary Report, Calendar Year 2010, U.S. Environmental Protection Agency Identification No. NV3890090001  

SciTech Connect (OSTI)

This report summarizes the waste minimization efforts undertaken by National Security TechnoIogies, LLC, for the U. S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO), during calendar year 2010. The NNSA/NSO Pollution Prevention Program establishes a process to reduce the volume and toxicity of waste generated by NNSA/NSO activities and ensures that proposed methods of treatment, storage, and/or disposal of waste minimize potential threats to human health and the environment.

Haworth, D.M.

2011-01-30T23:59:59.000Z

443

Waste minimization at Lawrence Livermore National Laboratory: A case study of environmentally conscious manufacturing  

SciTech Connect (OSTI)

The purpose of this paper is to provide an update on what we`ve accomplished and have planned in our plating operation at Lawrence Livermore National Laboratory (LLNL) in the area of waste minimization. Our efforts have included issues other than waste minimization and, therefore, fall under the wider umbrella entitled pollution prevention or environmentally conscious electroplating. Approximately one year has passed since our last report on pollution prevention and since this topic remains a high-effort activity much more has been accomplished. Our efforts to date fall under the first two generation categories of waste reduction. Good housekeeping practices, inventory control, and minor changes in operating practices (first generation) resulted in an impressive amount of waste reduction. In the second generation of waste reduction, current technology, separation technologies, and material substitutions were used to reduce emission and wastes. The third generation of improvements requires significant technological advances in process synthesis and engineering. We are presently starting some projects in this third generation phase and these will be discussed at the end of this paper.

Steffani, C.P.; Dini, J.W.

1994-02-01T23:59:59.000Z

444

Minimally Invasive Radiologically Guided Intervention for the Treatment of Salivary Calculi  

SciTech Connect (OSTI)

Purpose: To describe the technique and examine the value of salivary stone extraction using a minimally invasive, radiologically guided approach as an alternative to salivary gland surgery for the treatment of benign salivary gland obstruction. Methods: Eighty-six cases of sialolithiasis (83 patients) were treated by stone removal using a Dormia basket under local anesthesia and fluoroscopic guidance. Postoperative assessment was made clinically at review, by sialogram and by questionnaire. Results: Of 86 cases of sialolithiasis treated, in 55 (64%)it was possible to remove all stones. In 12 cases (14%) part of a stone or some of a number of calculi were removed and in 19 cases (22%) the procedure failed. The commonest reason for failure was fixation of the stone within the duct. Symptoms at review (range 1-49 months, mean 17 months) were relieved in 55 of 67 (82%) of cases where a stone or portion of stone was removed. Conclusions:Stone removal from the salivary duct system by radiologically guided,minimally invasive approach is a simple procedure with low morbidity and high patient acceptance when appropriate selection criteria are applied. These criteria are considered and recommendations made.

Brown, Jackie E.; Drage, Nicholas A. [Department of Dental Radiology, Guy's Dental Hospital, Guy's and St. Thomas' Dental Hospital Trust, London SE1 9RT (United Kingdom); Escudier, Michael P. [Department of Oral Medicine and Pathology, Guy's, King's and St. Thomas' Dental Institute, LondonSE1 9RT (United Kingdom); Wilson, Ron F. [Dental Clinical Research, Guy's, King's and St. Thomas' Dental Institute, London SE1 9RT (United Kingdom); McGurk, Mark [Department of Oral and Maxillofacial Surgery, Guy's, King's and St. Thomas' Dental Institute, LondonSE1 9RT (United Kingdom)

2002-10-15T23:59:59.000Z

445

Observation techniques that minimize impacts on wildlife and maximize visitor satisfaction in night-time tours  

Science Journals Connector (OSTI)

Nocturnal observation of wildlife is a popular tourist attraction. However, there is very little research about its impact on wildlife and thus the optimal trade-off in minimizing impacts and maximizing visitor satisfaction. We first used a questionnaire-based survey to determine the characteristics of a satisfying nocturnal wildlife tour for visitors to a popular Australian rangeland tourist site. This revealed a particular interest by visitors in high-tech wildlife observation equipment such as night vision devices and bat detectors. Further satisfaction was gained from the types of wildlife viewed and the conduct of the tour. Respondents underestimated aversive effects on wildlife imposed by night-time tours. With this context, we analyzed observation methods typically employed in night-time wildlife tours. We compared the results achieved with different illumination (white vs. red vs. infrared light), watch modes (sitting at artificial watering points vs. hiking in creek beds), observation times (starting at dusk vs. 2h past dusk) and wind speed. Abundance and species richness of the non-bat fauna and bat activity were greatest at artificial watering points directly after dusk during calm nights. A night vision device enhanced by infrared light facilitated closer observations, the viewing of undisturbed wildlife behavior and revealed more species than under white or red light. We consolidated our findings from the visitor survey and the wildlife observation research to recommend a tour design that minimizes impacts and optimizes observation outcomes when conducting night-time tours of wildlife.

Isabelle D. Wolf; David B. Croft

2012-01-01T23:59:59.000Z

446

Unrestricted disposal of minimal activity levels of radioactive wastes: exposure and risk calculations  

SciTech Connect (OSTI)

The US Nuclear Regulatory Commission is currently considering revision of rule 10 CFR Part 20, which covers disposal of solid wastes containing minimal radioactivity. In support of these revised rules, we have evaluated the consequences of disposing of four waste streams at four types of disposal areas located in three different geographic regions. Consequences are expressed in terms of human exposures and associated health effects. Each geographic region has its own climate and geology. Example waste streams, waste disposal methods, and geographic regions chosen for this study are clearly specified. Monetary consequences of minimal activity waste disposal are briefly discussed. The PRESTO methodology was used to evaluate radionuclide transport and health effects. This methodology was developed to assess radiological impacts to a static local population for a 1000-year period following disposal. Pathways and processes of transit from the trench to exposed populations included the following considerations: groundwater transport, overland flow, erosion, surface water dilution, resuspension, atmospheric transport, deposition, inhalation, and ingestion of contaminated beef, milk, crops, and water. 12 references, 2 figures, 8 tables.

Fields, D.E.; Emerson, C.J.

1984-08-01T23:59:59.000Z

447

Polymer uncrossing and knotting in protein folding, and their role in minimal folding pathways  

E-Print Network [OSTI]

We introduce a method for calculating the extent to which chain non-crossing is important in the most efficient, optimal trajectories or pathways for a protein to fold. This involves recording all unphysical crossing events of a ghost chain, and calculating the minimal uncrossing cost that would have been required to avoid such events. A depth-first tree search algorithm is applied to find minimal transformations to fold $\\alpha$, $\\beta$, $\\alpha/\\beta$, and knotted proteins. In all cases, the extra uncrossing/non-crossing distance is a small fraction of the total distance travelled by a ghost chain. Different structural classes may be distinguished by the amount of extra uncrossing distance, and the effectiveness of such discrimination is compared with other order parameters. It was seen that non-crossing distance over chain length provided the best discrimination between structural and kinetic classes. The scaling of non-crossing distance with chain length implies an inevitable crossover to entanglement-do...

Mohazab, Ali R

2012-01-01T23:59:59.000Z

448

Heat kernel of non-minimal gauge field kinetic operators on Moyal plane  

E-Print Network [OSTI]

We generalize the Endo formula originally developed for the computation of the heat kernel asymptotic expansion for non-minimal operators in commutative gauge theories to the noncommutative case. In this way, the first three non-zero heat trace coefficients of the non-minimal U(N) gauge field kinetic operator on the Moyal plane taken in an arbitrary background are calculated. We show that the non-planar part of the heat trace asymptotics is determined by U(1) sector of the gauge model. The non-planar or mixed heat kernel coefficients are shown to be gauge-fixing dependent in any dimension of space-time. In the case of the degenerate deformation parameter the lowest mixed coefficients in the heat expansion produce non-local gauge-fixing dependent singularities of the one-loop effective action that destroy the renormalizability of the U(N) model at one-loop level. The twisted-gauge transformation approach is discussed.

Alexei Strelchenko

2006-08-18T23:59:59.000Z

449

Minimization of the vibration transmission through the propeller?shafting system in a submarine  

Science Journals Connector (OSTI)

Ships and submarines are efficient sources of underwater radiated noise. In the low?frequency range the main sources of ship vibration and noise are the working machinery such as the diesel engines gearboxes and generators and the propeller/propulsion system. Rotation of the propeller results in discrete tonals at the blade passing frequency and its harmonics. In addition in the case of a submarine hydrodynamic forces acting on the propeller due to the fluctuating pressure field are transmitted through the propeller?shaft and thrust bearings resulting in axial excitation of the submarine hull. A hydraulic dynamic absorber also known as a resonant changer is used to minimize the vibration transmission through the propeller?shafting system in order to prevent excitation of the hull axial resonances. The present work is concerned with minimizing the vibration transmission to the hull by optimizing the virtual spring mass and damper parameters associated with the resonant changer in a submarine. The dynamic response of the propeller?shafting system including the propeller shaft thrust bearing thrust block foundation and resonant changer are characterized using four pole parameters.

2004-01-01T23:59:59.000Z

450

Electron Impact Induced Fragmentation of N2H+ and N2D+  

Science Journals Connector (OSTI)

Specific data on such molecular ions has been thus recognized as an urgent need for fusion plasma research purposes. ...

M. O. A. El Ghazaly; J. B. A. Mitchell; J. J. Jureta; P. Defrance

2014-10-21T23:59:59.000Z

451

NETL: News Release - DOE Selects Projects to Minimize Freshwater Use in  

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

November 21, 2005 November 21, 2005 DOE Selects Projects to Minimize Freshwater Use in Coal-Fired Power Plants WASHINGTON, DC- As part of an expanding effort to address the critical link between energy and water, the U.S. Department of Energy (DOE) has selected seven projects aimed at reducing the amount of freshwater needed by coal-fired power plants. Under DOE's Innovations for Existing Plants program, which is designed to enhance the environmental performance of existing coal-fired power plants, the Energy Department and its research partners will cost-share in a broad mix of projects with a total value of more than $5 million. The projects will be managed by the Office of Fossil Energy's National Energy Technology Laboratory. MORE INFO Learn more about the 2003 project selections

452

Minimal energy cost of thermodynamic information processes only with entanglement transfer  

E-Print Network [OSTI]

We present the minimal energy costs for the measurement and the information erase, using only the Helmholtz free energy and the entanglement of formation. The entanglement of formation appears in the form of difference which indicates the amount of entanglement transfer on the memory during the processes; the cost of the measurement is given by the entanglement gain, whereas the cost of the information erase is given by the loss of available entanglement. Putting together the present Letter and Rev. E 88, 042143 (2013), we can describe the violation and the restoration of the second law only in terms of the entanglement of formation; both of the excess of extracted work from thermodynamics with information process over the conventional second law and the total cost of the information process are given by the entanglement of formation, and the former is less than or equal to the latter.

Hiroyasu Tajima

2013-11-06T23:59:59.000Z

453

Admixture enhanced controlled low-strength material for direct underwater injection with minimal cross-contamination  

SciTech Connect (OSTI)

Commercially available admixtures have been developed for placing traditional concrete products under water. This paper evaluates adapting anti-washout admixture (AWA) and high range water reducing admixture (HRWRA) products to enhance controlled low-strength materials (CLSMs) for underwater placement. A simple experimental scale model (based on dynamic and geometric similitude) of typical grout pump emplacement equipment has been developed to determine the percentage of cementing material washed out. The objective of this study was to identify proportions of admixtures and underwater CLSM emplacement procedures which would minimize the cross-contamination of the displaced water while maintaining the advantages of CLSM. Since the displaced water from radioactively contaminated systems must be subsequently treated prior to release to the environment, the amount of cross-contamination is important for cases in which cementing material could form hard sludges in a water treatment facility and contaminate the in-place CLSM stabilization medium.

Hepworth, H.K.; Davidson, J.S.; Hooyman, J.L.

1997-03-01T23:59:59.000Z

454

Inflation from non-minimally coupled scalar field in loop quantum cosmology  

SciTech Connect (OSTI)

The FRW model with non-minimally coupled massive scalar field has been investigated in LQC framework. Considered form of the potential and coupling allows applications to Higgs driven inflation. Out of two frames used in the literature to describe such systems: Jordan and Einstein frame, the latter one is applied. Specifically, we explore the idea of the Einstein frame being the natural 'environment' for quantization and the Jordan picture having an emergent nature. The resulting dynamics qualitatively modifies the standard bounce paradigm in LQC in two ways: (i) the bounce point is no longer marked by critical matter energy density, (ii) the Planck scale physics features the ''mexican hat'' trajectory with two consecutive bounces and rapid expansion and recollapse between them. Furthermore, for physically viable coupling strength and initial data the subsequent inflation exceeds 60 e-foldings.

Artymowski, Micha?; Dapor, Andrea [Instytut Fizyki Teoretycznej, Uniwersytet Warszawski, ul. Ho?a 69, 00-681 Warszawa (Poland); Paw?owski, Tomasz, E-mail: artymowski@fuw.edu.pl, E-mail: adapor@fuw.edu.pl, E-mail: tomasz.pawlowski@unab.cl [Departamento de Ciencias Fsicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Av. Repblica 220, Santiago de Chile (Chile)

2013-06-01T23:59:59.000Z

455

$b \\to s l \\bar l $ in the minimal supergravity model  

E-Print Network [OSTI]

The $b \\rightarrow s l^+ l^-$ process is studied in the minimal supergravity model in detail. Taking account of the long distance contributions from the $c\\overline{c}$ resonances, we calculate the branching ratio and the lepton forward-backward asymmetry in this model. We find that there is a strong correlation between the branching ratios of $b \\rightarrow s \\gamma$ and $b \\rightarrow s l^+ l^-$ processes and that the interference effect can change the $b \\rightarrow s l^+ l^-$ branching ratio in the off-resonance regions by up to $\\pm 15%$ depending on the relative phase between the long and short distance contributions. Using various phenomenological constraints including the branching ratio of $b \\rightarrow s \\gamma$, we show that there are regions in the parameter space where the branching ratio of $b \\rightarrow s l^+ l^-$ is enhanced by about 50% compared to the SM. We also show that the branching ratio of $b \\rightarrow s \

Toru Goto; Yasuhiro Okada; Yasuhiro Shimizu; Minoru Tanaka

1996-09-28T23:59:59.000Z

456

Design and prototype of a minimal cost tracking photovoltaic array structure  

SciTech Connect (OSTI)

This paper presents research results to develop a minimal cost photovoltaic array tracking structure. Objectives of the project were to (1) employ a modular design based upon multiple point foundations, off-site assembly, and commercially available materials; (2) offer performance improvements over horizontal one-axis trackers by tilting the axis of rotation; (3) verify design performance, and cost goals through prototype construction and operation. Each of these objectives was accomplished beginning with design activities in early 1993 and culminating with construction of commercial trackers in early 1995. The Delta Trackers{trademark} offer dramatic reduction in PV energy production costs ({cents}/kWh) through lower balance-of-system costs and improved performance.

Shugar, D.S. [Advanced Photovoltaic Systems, Inc., San Bruno, CA (United States); Matlin, R.W. [Enertech Engineering, Lexington, MA (United States)

1995-10-01T23:59:59.000Z

457

Classification of Kac representations in the logarithmic minimal models LM(1,p)  

E-Print Network [OSTI]

For each pair of positive integers r,s, there is a so-called Kac representation (r,s) associated with a Yang-Baxter integrable boundary condition in the lattice approach to the logarithmic minimal model LM(1,p). We propose a classification of these representations as finitely-generated submodules of Feigin-Fuchs modules, and present a conjecture for their fusion algebra which we call the Kac fusion algebra. The proposals are tested using a combination of the lattice approach and applications of the Nahm-Gaberdiel-Kausch algorithm. We also discuss how the fusion algebra may be extended by inclusion of the modules contragredient to the Kac representations, and determine polynomial fusion rings isomorphic to the conjectured Kac fusion algebra and its contragredient extension.

Jorgen Rasmussen

2010-12-23T23:59:59.000Z

458

Environmental effects of dredging: Guide to selecting a dredge for minimizing resuspension of sediment. Technical notes  

SciTech Connect (OSTI)

This technical note contains assessments of conventional and special-purpose dredges in removing sediment with minimal sediment resuspension. If sediment resuspension is a critical factor in dredging areas of contaminated material, the following guidance will aid in specifying the dredge and operating conditions. Investigations were conducted as part of the Corps of Engineers Improvement of Operations and Maintenance Techniques (IOMT) Research Program to evaluate the resuspension of sediment into the water column due to dredging operations. Laboratory, field, and literature studies have been used to define the sediment resuspension characteristics of most conventional and several special-purpose dredges. The natural hydrophobic tendency of most organic contaminants and the high sediment-sorptive capacity for inorganic contaminants limits release to the soluble forms and makes the simple measure of sediment resuspension during dredging a relative measure of the potential for contaminant release.

Hayes, D.F.

1986-12-01T23:59:59.000Z

459

Summary of research on waste minimization studies by Japan Waste Research Foundation (JWRF)  

SciTech Connect (OSTI)

Japan is trying to provide a qualitatively better environment and the treatment of incinerator gas emissions is an indispensable part of pollution prevention programs. Therefore, a large part of incinerator wastes will be disposed of in landfills for municipal solid waste, and volume reduction and stabilization are major items on the technology agenda. For these reasons, the purpose of this research is waste minimization, namely reducing the volume of wastes that must be disposed of in landfills. This is being done by studying ways to use heat treatment to reduce the volume of incinerator ash, to develop technology for the effective use of treated material and to render fly ash and fused salts harmless. In addition, the author seeks to establish more advanced municipal solid waste treatment systems that reduce (slim) waste by using space efficiently and recovering metals in incinerator residue and fly ash for recycling.

Nabeshima, Yoshiro [Tamagawa Univ., Machida City, Tokyo (Japan)] [Tamagawa Univ., Machida City, Tokyo (Japan)

1996-12-31T23:59:59.000Z

460

Simultaneous optimization of propellerhull systems to minimize lifetime fuel consumption  

Science Journals Connector (OSTI)

Abstract In traditional naval architecture design methodologies optimization of the hull and propeller are done in two separate phases. This sequential approach can lead to designs that have sub-optimal fuel consumption and, thus, higher operational costs. This work presents a method to optimize the propellerhull system simultaneously in order to design a vessel to have minimal fuel consumption. The optimization uses a probabilistic mission profile, propellerhull interaction, and engine information to determine the coupled system with minimum fuel cost over its operational life. The design approach is tested on a KCS SIMMAN container ship using B-series propeller data and is shown to reduce fuel consumption compared to an optimized traditional design approach.

M. Nelson; D.W. Temple; J.T. Hwang; Y.L. Young; J.R.R.A. Martins; M. Collette

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "n2 purged minimal" 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

Bhabha first-order wave equations. iv. causality with minimal electromagnetic coupling  

Science Journals Connector (OSTI)

We demonstrate that the arbitrary-spin Bhabha fields with minimal electromagnetic coupling are causal in both the c-number and q-number theories. We first obtain the Klein-Gordon (KG) divisors in closed form in terms of the elementary symmetric functions. c-number causality is easily demonstrated for half-integer spin with the Velo-Zwanziger method and for integer spin by using Wightman's suggestion involving the KG divisors. For the q-number demonstration we set up an indefinite-metric second-quantized formalism, and use the above KG divisors to show causality in closed form for arbitrary spin. In both the c-number and q-number theories a special handling of the integer-spin subsidiary components is necessary. Our discussion focuses on the Bhabha indefinite metric and on the connection between the number of derivatives in a theory and the occurrence or nonoccurrence of causality.

R. A. Krajcik and Michael Martin Nieto

1976-02-15T23:59:59.000Z

462

Dark Energy from Gauss-Bonnet and non-minimal couplings  

E-Print Network [OSTI]

We consider a scalar-tensor model of dark energy with Gauss-Bonnet and non-minimal couplings. Exact cosmological solutions were found in absence of potential, that give equations of state of dark energy consistent with current observational constraints, but with different asymptotic behaviors depending on the couplings of the model. A detailed reconstruction procedure is given for the scalar potential and the Gauss-Bonnet coupling for any given cosmological scenario. Particularly, we consider conditions for the existence of a variety of cosmological solutions with accelerated expansion, including quintessence, phantom, de Sitter, Little Rip. For the case of quintessence and phantom we have found a scalar potential of the Albrecht-Skordis type, where the potential is an exponential with a polynomial factor.

Granda, L N

2014-01-01T23:59:59.000Z

463

Constrained minimal supersymmetric standard model spectroscopy in light of PAMELA and ATIC observations  

SciTech Connect (OSTI)

Dark matter neutralinos in the constrained minimal supersymmetric model (CMSSM) may account for the recent cosmic ray electron and positron observations reported by the PAMELA and ATIC experiments either through self annihilation or via decay. However, to achieve this, both scenarios require new physics beyond the 'standard' CMSSM, and a unified explanation of the two experiments suggests a neutralino mass of order 700 GeV-2 TeV. A relatively light neutralino with mass around 100 GeV (300 GeV) can accommodate the PAMELA but not the ATIC observations based on a model of annihilating (decaying) neutralinos. We study the implications of these scenarios for Higgs and sparticle spectroscopy in the CMSSM and highlight some benchmark points. An estimate of neutrino flux expected from the annihilating and decaying neutralino scenarios is provided.

Gogoladze, Ilia; Khalid, Rizwan; Shafi, Qaisar; Yueksel, Hasan [Bartol Research Institute, Department of Physics and Astronomy University of Delaware, Newark, Delaware 19716 (United States)

2009-03-01T23:59:59.000Z

464

Elimination or Minimization of Oscillation Marks: A Path To Improved Cast Surface Quality  

SciTech Connect (OSTI)

Oscillation marks are the most recognizable feature of continuous casting and can be related to the subsurface defects that can be found on product rolled from continuous cast slabs. The purpose of this work was to develop strategies that can be used on industrial continuous casters to reduce oscillation mark depth and, in particular, to minimize the formation of hook type defects that are prevalent on ultra low carbon grades. The major focus of the work was on developing a technique to allow heat transfer in the meniscus region of the continuous caster to be measured and the effect of mold slag chemistry and chrystallization to be documented. A new experimental technique was developed that allowed the effect of mold flux chemistry and chrystallization on the radiation heat transfer rate to be measured dynamically.

Dr. Alan W. Cramb

2007-12-17T23:59:59.000Z

465

Hamilton's principle: why is the integrated difference of kinetic and potential energy minimized?  

E-Print Network [OSTI]

I present an intuitive answer to an often asked question: why is the integrated difference K-U between the kinetic and potential energy the quantity to be minimized in Hamilton's principle? Using elementary arguments, I map the problem of finding the path of a moving particle connecting two points to that of finding the minimum potential energy of a static string. The mapping implies that the configuration of a non--stretchable string of variable tension corresponds to the spatial path dictated by the Principle of Least Action; that of a stretchable string in space-time is the one dictated by Hamilton's principle. This correspondence provides the answer to the question above: while a downward force curves the trajectory of a particle in the (x,t) plane downward, an upward force of the same magnitude stretches the string to the same configuration x(t).

Alberto G. Rojo

2005-04-02T23:59:59.000Z

466

Online scheduling of simple linear deteriorating jobs to minimize the total general completion time  

Science Journals Connector (OSTI)

Abstract Traditional scheduling assumes that the processing time of a job is fixed. Yet there are numerous situations in which the processing time increases (deteriorates) as the start time increases. In particular, lots of work has been devoted to jobs with simple linear deterioration. The processing time p j of job J j is a simple linear function of its start time s j , precisely, p j = b j s j , where b j is the deteriorating rate. In this paper, we study the problem of online non-preemptive scheduling of jobs with arbitrary release times and simple linear deteriorating rates on a single machine to minimize the total general completion time. We present an algorithm DSDR (Delayed Smallest Deteriorating Rate) and prove that it achieves the best-possible competitive ratio ( 1 + b max ) ? for all deterministic online algorithms, where ? is the general index of completion time and ? > 0 .

Sheng Yu; Prudence W.H. Wong

2013-01-01T23:59:59.000Z

467

Neutrino fluxes from constrained minimal supersymmetric standard model lightest supersymmetric particle annihilations in the Sun  

SciTech Connect (OSTI)

We evaluate the neutrino fluxes to be expected from neutralino lightest supersymmetric particle (LSP) annihilations inside the Sun, within the minimal supersymmetric extension of the standard model with supersymmetry-breaking scalar and gaugino masses constrained to be universal at the grand unified theory scale [the constrained minimal supersymmetric standard model (CMSSM)]. We find that there are large regions of typical CMSSM (m{sub 1/2},m{sub 0}) planes where the LSP density inside the Sun is not in equilibrium, so that the annihilation rate may be far below the capture rate. We show that neutrino fluxes are dependent on the solar model at the 20% level, and adopt the AGSS09 model of Serenelli et al. for our detailed studies. We find that there are large regions of the CMSSM (m{sub 1/2},m{sub 0}) planes where the capture rate is not dominated by spin-dependent LSP-proton scattering, e.g., at large m{sub 1/2} along the CMSSM coannihilation strip. We calculate neutrino fluxes above various threshold energies for points along the coannihilation/rapid-annihilation and focus-point strips where the CMSSM yields the correct cosmological relic density for tan{beta}=10 and 55 for {mu}>0, exploring their sensitivities to uncertainties in the spin-dependent and -independent scattering matrix elements. We also present detailed neutrino spectra for four benchmark models that illustrate generic possibilities within the CMSSM. Scanning the cosmologically favored parts of the parameter space of the CMSSM, we find that the IceCube/DeepCore detector can probe at best only parts of this parameter space, notably the focus-point region and possibly also at the low-mass tip of the coannihilation strip.

Ellis, John [TH Division, Physics Department, CERN, 1211 Geneva 23 (Switzerland); Olive, Keith A. [William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States); Savage, Christopher [Oskar Klein Centre for Cosmoparticle Physics, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm (Sweden); Spanos, Vassilis C. [Department of Physics, University of Patras, GR-26500 Patras (Greece)

2010-04-15T23:59:59.000Z

468

Minimizing the total cost of hen allocation to poultry farms using hybrid Growing Neural Gas approach  

Science Journals Connector (OSTI)

Abstract In this paper a decision support system to solve the problem of hen allocation to hen houses with the aim of minimizing the total cost is described. The total cost consists of farm utilization cost, hen transportation cost, and loss from mixing hens at different ages in the same hen houses. Clustering of hen houses using the traditional Growing Neural Gas (GNG) was first determined to allocate hens to the hen houses effectively. However, the traditional GNG often solves the clustering problem by considering distance only. Therefore the hybrid Growing Neural Gas (hGNG) considering both the distance from the centroids of the clusters to the hen houses and the weights of hen house sizes was proposed to solve the problem. In the second phase, allocating and determining routes to allocate hens to the hen houses using the nearest neighbor approach were carried out in order to minimize the total distance. The performance of the algorithm was measured using the relative improvement (RI), which compares the total costs of the hGNG and GNG algorithms and the current practice. The results obtained from this study show that the hGNG algorithm provides better total cost values than the firms current practice from 7.92% to 20.83%, and from 5.90% to 17.91% better than the traditional GNG algorithm. The results also demonstrate that the proposed method is useful not only for reducing the total cost, but also for efficient management of a poultry production system. Furthermore, the method used in this research should prove beneficial to other similar agro-food sectors in Thailand and around the world.

Atiwat Boonmee; Kanchana Sethanan; Banchar Arnonkijpanich; Somnuk Theerakulpisut

2015-01-01T23:59:59.000Z

469

Purge-and-Trap Analysis Using Fused Silica Capillary Column GC/MS  

Science Journals Connector (OSTI)

......dimethylcyclohexane (isomer) tetrahydrothiophene (?)** tetrachloroethene...chlorobenzene 2-methyl tetrahydrothiophene (?)** ethylbenzene...bromoform 2,5-dimethyl tetrahydrothiophene (isomer) 2,5-dimethyl......

F.A. Dreisch; T.O. Munson

1983-03-01T23:59:59.000Z

470

Adaptation to a new environment allows cooperators to purge cheaters stochastically  

E-Print Network [OSTI]

, and approved September 5, 2012 (received for review June 14, 2012) Cooperation via production of common goods a "tragedy of the commons": Cheaters, benefit- ing from without producing costly common goods, are more fit to produce a publicly available good is a common biological phenomenon. Human volunteers contribute

Zhang, Jianzhi

471

RCRA Permit for a Hazardous Waste Management Facility, Permit Number NEV HW0101, Annual Summary/Waste Minimization Report  

SciTech Connect (OSTI)

This report summarizes the EPA identification number of each generator from which the Permittee received a waste stream, a description and quantity of each waste stream in tons and cubic feet received at the facility, the method of treatment, storage, and/or disposal for each waste stream, a description of the waste minimization efforts undertaken, a description of the changes in volume and toxicity of waste actually received, any unusual occurrences, and the results of tank integrity assessments. This Annual Summary/Waste Minimization Report is prepared in accordance with Section 2.13.3 of Permit Number NEV HW0101.

Arnold, Patrick [NSTec] [NSTec

2014-02-14T23:59:59.000Z

472

Phenomenology of the minimal $B-L$ Model: the Higgs sector at the Large Hadron Collider and future Linear Colliders  

E-Print Network [OSTI]

This Thesis is devoted to the study of the phenomenology of the Higgs sector of the minimal $B-L$ extension of the Standard Model at present and future colliders. Firstly, the motivations that call for the minimal $B-L$ extension are summarised. In addition, the model is analysed in its salient parts. Moreover, a detailed review of the phenomenological allowed Higgs sector parameter space is given. Finally, a complete survey of the distinctive Higgs boson signatures of the model at both the Large Hadron Collider and the future linear colliders is presented.

Giovanni Marco Pruna

2011-06-23T23:59:59.000Z

473

Even-odd effects and Coulomb effects on minimal excitation energy of fragments from low energy fission  

E-Print Network [OSTI]

This work is focused on even-odd effects on the minimal total fragment excitation energy in thermal neutron induced fission of 233U and 235U as well as in spontaneous fission of 252Cf. In a scission model, taking into account the fragment deformation properties and Coulomb interaction between fragments, the expression of the difference between Q-values referred to even/even and odd/odd charge splits, respectively, on the corresponding difference between the minimal total fragment excitation energy is studied.

Modesto Montoya

2014-10-06T23:59:59.000Z

474

Exotic collider signals from the complete phase diagram of minimal universal extra dimensions  

Science Journals Connector (OSTI)

Minimal universal extra dimensions (mUED) is often thought to predict that the lightest Kaluza-Klein particle (LKP) is the Kaluza-Klein gauge boson B1, leading to conventional missing energy signals at colliders and weakly interacting massive particle (WIMP) dark matter. In fact, the implications of mUED are far richer: the B1, charged Higgs boson H1, and graviton G1 are all possible LKPs, leading to many different phases with distinct signatures. Considering the complete phase diagram, we find predictions for charged or neutral particles with decay lengths of microns to tens of meters; WIMP, superWIMP, or charged relic particles; metastable particles with lifetimes of the order of or in excess of the age of the Universe; and scenarios combining two or more of these phenomena. In the cosmologically preferred region, the Higgs boson mass is between 180 and 245GeV, the LKP mass is between 810 and 1400GeV, and the maximal splitting between first Kaluza-Klein modes is less than 320GeV. This region predicts a variety of exotic collider signals, such as slow charged particles, displaced vertices, tracks with nonvanishing impact parameters, track kinks, and even vanishing charged tracks, all of which provide early discovery possibilities at the Large Hadron Collider.

Jose A. R. Cembranos; Jonathan L. Feng; Louis E. Strigari

2007-02-08T23:59:59.000Z

475

The Muon Anomalous Magnetic Moment in the Reduced Minimal 3-3-1 Model  

E-Print Network [OSTI]

We study the muon anomalous magnetic moment $(g-2)_{\\mu}$ in the context of the reduced minimal 3-3-1 model recently proposed in the literature. In particular, its spectrum contains a doubly charged scalar ($H^{\\pm \\pm}$) and gauge boson ($U^{\\pm \\pm}$), new singly charged vectors ($V^{\\pm}$) and a $Z^{\\prime}$ boson, each of which might give a sizeable contribution to the $(g-2)_{\\mu}$. We compute the 1-loop contributions from all these new particles to the $(g-2)_{\\mu}$. We conclude that the doubly charged vector boson provides the dominant contribution, and by comparing our results with the experimental constraints we derive an expected value for the scale of $SU(3)_L\\otimes U(1)_N$ symmetry breaking $v_{\\chi} \\sim 2$ TeV. We also note that, if the discrepancy in the anomalous moment is resolved in the future without this model then the constraints will tighten to requiring $v_\\chi > 2.7$ TeV with current precision, and will entirely rule out the model if the expected precision is achieved by the future experiment at Fermilab.

Chris Kelso; P. R. D. Pinheiro; Farinaldo S. Queiroz; William Shepherd

2013-11-30T23:59:59.000Z

476

Dark Matter in Minimal Universal Extra Dimensions with a Stable Vacuum and the "Right" Higgs  

E-Print Network [OSTI]

The recent discovery of a Higgs boson with mass of about 125 GeV, along with its striking similarity to the prediction from the Standard Model, informs and constrains many models of new physics. The Higgs mass exhausts one out of three input parameters of the minimal, five-dimensional version of universal extra dimension models, the other two parameters being the Kaluza-Klein (KK) scale and the cut-off scale of the theory. The presence of KK fermions with large coupling to the Higgs implies a short-lived electro-weak vacuum, unless the cut-off scale is at most a few times higher than the KK mass scale, providing an additional tight constraint to the theory parameter space. Here, we focus on the lightest KK particle as a dark matter candidate, and investigate the regions of parameter space where such particle has a thermal relic density in accord with the cosmological dark matter density. We find the paradoxical result that, for low enough cutoff scales consistent with vacuum stability, larger than previously thought KK mass scales become preferred to explain the dark matter abundance in the universe. We explain this phenomenon by pinpointing the additional particles which, at such low cutoffs, become close enough in mass to the dark matter candidate to coannihilate with it. We make predictions for both collider and direct dark matter searches that might soon close in on all viable theory parameter space.

Jonathan M. Cornell; Stefano Profumo; William Shepherd

2014-01-27T23:59:59.000Z

477

Method for minimizing decarburization and other high temperature oxygen reactions in a plasma sprayed material  

DOE Patents [OSTI]

A method is disclosed for spray coating material which employs a plasma gun that has a cathode, an anode, an arc gas inlet, a first powder injection port, and a second powder injection port. A suitable arc gas is introduced through the arc gas inlet, and ionization of the arc gas between the cathode and the anode forms a plasma. The plasma is directed to emenate from an open-ended chamber defined by the boundary of the anode. A coating is deposited upon a base metal part by suspending a binder powder within a carrier gas that is fed into the plasma through the first powder injection port; a material subject to degradation by high temperature oxygen reactions is suspended within a carrier gas that is fed into the plasma through the second injection port. The material fed through the second injection port experiences a cooler portion of the plasma and has a shorter dwell time within the plasma to minimize high temperature oxygen reactions. The material of the first port and the material of the second port intermingle within the plasma to form a uniform coating having constituent percentages related to the powder-feed rates of the materials through the respective ports.

Lenling, William J. (Madison, WI); Henfling, Joseph A. (Bosque Farms, NM); Smith, Mark F. (Albuquerque, NM)

1993-06-08T23:59:59.000Z

478

Methods of minimizing ground-water contamination from in situ leach uranium mining. Final report  

SciTech Connect (OSTI)

This is the final report of a research project designed to study methods of minimizing ground-water contamination from in situ leach uranium mining. Fieldwork and laboratory experiments were conducted to identify excursion indicators for monitoring purposes during mining, and to evaluate effective aquifer restoration techniques following mining. Many of the solution constituents were found to be too reactive with the aquifer sediments to reliably indicate excursion of leaching solution from the ore zone; however, in many cases, the concentrations of chloride and sulfate and the total dissolved solids level of the solution were found to be good excursion indicators. Aquifer restoration by ground-water sweeping consumed large quantities of ground water and was not effective for the redox-sensitive contaminants often present in the ore zone. Surface treatment methods such as reverse osmosis and electrodialysis were effective in reducing the amount of water used, but also had the potential for creating conditions in the aquifer under which the redox-sensitive contaminants would be mobile. In situ restoration by chemical reduction, in which a reducing agent is added to the solution recirculated through the ore zone during restoration, can restore the ore-zone sediment as well as the ground water. This method could lead to a stable chemical condition in the aquifer similar to conditions before mining. 41 figures.

Deutsch, W.J.; Martin, W.J.; Eary, L.E.; Serne, R.J.

1985-03-01T23:59:59.000Z

479

Integrable Boundary Conditions and W-Extended Fusion in the Logarithmic Minimal Models LM(1,p)  

E-Print Network [OSTI]

We consider the logarithmic minimal models LM(1,p) as `rational' logarithmic conformal field theories with extended W symmetry. To make contact with the extended picture starting from the lattice, we identify 4p-2 boundary conditions as specific limits of integrable boundary conditions of the underlying Yang-Baxter integrable lattice models. Specifically, we identify 2p integrable boundary conditions to match the 2p known irreducible W-representations. These 2p extended representations naturally decompose into infinite sums of the irreducible Virasoro representations (r,s). A further 2p-2 reducible yet indecomposable W-representations of rank 2 are generated by fusion and these decompose as infinite sums of indecomposable rank-2 Virasoro representations. The fusion rules in the extended picture are deduced from the known fusion rules for the Virasoro representations of LM(1,p) and are found to be in agreement with previous works. The closure of the fusion algebra on a finite number of representations in the extended picture is remarkable confirmation of the consistency of the lattice approach.

Paul A. Pearce; Jorgen Rasmussen; Philippe Ruelle

2008-03-06T23:59:59.000Z

480

Comparison of several glycerol reforming methods for hydrogen and syngas production using Gibbs energy minimization  

Science Journals Connector (OSTI)

Abstract This paper focuses on the comparison of different glycerol reforming technologies aimed to hydrogen and syngas production. The reactions of steam reforming, partial oxidation, autothermal reforming, dry reforming and supercritical water gasification were analyzed. For this, the Gibbs energy minimization approach was used in combination with the virial equation of state. The validation of the model was made between the simulations of the proposed model and both, simulated and experimental data obtained in the literature. The effects of modifications in the operational temperature, operational pressure and reactants composition were analyzed with regard to composition of the products. The effect of coke formation was discussed too. Generally, higher temperatures and lower pressures resulted in higher hydrogen and syngas production. All reforming technologies demonstrated to be feasible for use in hydrogen or synthesis gas production in respect of the products composition. The proposed model showed good predictive ability and low computational time (close to 1s) to perform the calculation of the combined chemical and phase equilibrium for all systems analyzed.

Antonio C.D. Freitas; Reginaldo Guirardello

2014-01-01T23:59:59.000Z

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481

Topologically protected qubits as minimal Josephson junction arrays with non trivial boundary conditions: a proposal  

E-Print Network [OSTI]

Recently a one-dimensional closed ladder of Josephson junctions has been studied (G. Cristofano et al., Phys. Lett. A 372 (2008) 2464) within a twisted conformal field theory (CFT) approach (G. Cristofano et al., Mod. Phys. Lett. A 15 (2000) 1679; Nucl. Phys. B 641 (2002) 547) and shown to develop the phenomenon of flux fractionalization (G. Cristofano et al., Eur. Phys. J. B 49 (2006) 83). That led us to predict the emergence of a topological order in such a system (G. Cristofano et al., JSTAT (2005) P03006). In this letter we analyze the ground states and the topological properties of fully frustrated Josephson junction arrays (JJA) arranged in a Corbino disk geometry for a variety of boundary conditions. In particular minimal configurations of fully frustrated JJA are considered and shown to exhibit the properties needed in order to build up a solid state qubit, protected from decoherence. The stability and transformation properties of the ground states of the JJA under adiabatic magnetic flux changes are analyzed in detail in order to provide a tool for the manipulation of the proposed qubit.

Gerardo Cristofano; Vincenzo Marotta; Adele Naddeo; Giuliano Niccoli

2008-10-16T23:59:59.000Z

482

On approximate reasoning and minimal models for the development of robust outdoor vehicle navigation schemes  

SciTech Connect (OSTI)

Outdoor sensor-based operation of autonomous robots has revealed to be an extremely challenging problem, mainly because of the difficulties encountered when attempting to represent the many uncertainties which are always present in the real world. These uncertainties are primarily due to sensor imprecisions and unpredictability of the environment, i.e., lack of full knowledge of the environment characteristics and dynamics. Two basic principles, or philosophies, and their associated methodologies are proposed in an attempt to remedy some of these difficulties. The first principle is based on the concept of ``minimal model`` for accomplishing given tasks and proposes to utilize only the minimum level of information and precision necessary to accomplish elemental functions of complex tasks. This approach diverges completely from the direction taken by most artificial vision studies which conventionally call for crisp and detailed analysis of every available component in the perception data. The paper will first review the basic concepts of this approach and will discuss its pragmatic feasibility when embodied in a behaviorist framework. The second principle which is proposed deals with implicit representation of uncertainties using Fuzzy Set Theory-based approximations and approximate reasoning, rather than explicit (crisp) representation through calculation and conventional propagation techniques. A framework which merges these principles and approaches is presented, and its application to the problem of sensor-based outdoor navigation of a mobile robot is discussed. Results of navigation experiments with a real car in actual outdoor environments are also discussed to illustrate the feasibility of the overall concept.

Pin, F.G.

1993-11-01T23:59:59.000Z

483

Integrated probabilistic design of marine propulsors to minimize lifetime fuel consumption  

Science Journals Connector (OSTI)

Marine propellers are typically designed to achieve optimal performance at a single or a few design points. It is well understood that the performance of marine propulsion systems decays at off-design conditions, where the system operates for the majority of its life, where fuel consumption rates are high and the system as a whole operates at lower efficiencies. This paper presents a novel integrated design methodology that considers the propeller, prime mover, and vessel as one integrated system, and considers the probabilistic operational profile of the vessel, to minimize lifetime fuel consumption. The proposed design methodology represents a new approach to evaluate the tradeoffs between different design objectives and constraints by considering the system performance characteristics along with probability of occurrence, and hence allows for global optimization of the propeller geometry. Results are shown for a pair of fixed-pitch propellers designed for a twin-screw naval combatant craft. System performance for a design obtained using the proposed methodology is compared with designs obtained using traditional point-based design approaches. This methodology can be easily extended to investigate the effects of variations in resistance, operational profile or additional performance criteria, such as safety during extreme operations, lifetime carbon emission, and life cycle costs.

Michael R. Motley; Mayer Nelson; Yin L. Young

2012-01-01T23:59:59.000Z

484

Finding the quantum thermoelectric with maximal efficiency and minimal entropy production at given power output  

E-Print Network [OSTI]

We investigate the nonlinear scattering theory for quantum systems with strong Seebeck and Peltier effects, and consider their use as heat-engines and refrigerators with finite power outputs. This article gives detailed derivations of the results summarized in Phys. Rev. Lett. 112, 130601 (2014). It shows how to use the scattering theory to find (i) the quantum thermoelectric with maximum possible power output, and (ii) the quantum thermoelectric with maximum efficiency at given power output. The latter corresponds to a minimal entropy production at that power output. These quantities are of quantum origin since they depend on system size over electronic wavelength, and so have no analogue in classical thermodynamics. The maximal efficiency coincides with Carnot efficiency at zero power output, but decreases with increasing power output. This gives a fundamental lower bound on entropy production, which means that reversibility (in the thermodynamic sense) is impossible for finite power output. The suppression of efficiency by (nonlinear) phonon and photon effects is addressed in detail; when these effects are strong, maximum efficiency coincides with maximum power. Finally, we show in particular limits (typically without magnetic fields) that relaxation within the quantum system does not allow the system to exceed the bounds derived for relaxation-free systems, however a general proof of this remains elusive.

Robert S. Whitney

2015-01-28T23:59:59.000Z

485

Ten scenarios from early radiation to late time acceleration with a minimally coupled dark energy  

E-Print Network [OSTI]

We consider General Relativity with matter, radiation and a minimally coupled dark energy defined by an equation of state w. Using dynamical system method, we find the equilibrium points of such a theory assuming an expanding Universe and a positive dark energy density. Two of these points correspond to classical radiation and matter dominated epochs for the Universe. For the other points, dark energy mimics matter, radiation or accelerates Universe expansion. We then look for possible sequences of epochs describing a Universe starting with some radiation dominated epoch(s) (mimicked or not by dark energy), then matter dominated epoch(s) (mimicked or not by dark energy) and ending with an accelerated expansion. We find ten sequences able to follow this Universe history without singular behaviour of w at some saddle points. Most of them are new in dark energy literature. To get more than these ten sequences, w has to be singular at some specific saddle equilibrium points. This is an unusual mathematical proper...

Fay, Stephane

2015-01-01T23:59:59.000Z

486

Neutrino Masses, Lepton Flavor Mixing and Leptogenesis in the Minimal Seesaw Model  

E-Print Network [OSTI]

We present a review of neutrino phenomenology in the minimal seesaw model (MSM), an economical and intriguing extension of the Standard Model with only two heavy right-handed Majorana neutrinos. Given current neutrino oscillation data, the MSM can predict the neutrino mass spectrum and constrain the effective masses of the tritium beta decay and the neutrinoless double-beta decay. We outline five distinct schemes to parameterize the neutrino Yukawa-coupling matrix of the MSM. The lepton flavor mixing and baryogenesis via leptogenesis are investigated in some detail by taking account of possible texture zeros of the Dirac neutrino mass matrix. We derive an upper bound on the CP-violating asymmetry in the decay of the lighter right-handed Majorana neutrino. The effects of the renormalization-group evolution on the neutrino mixing parameters are analyzed, and the correlation between the CP-violating phenomena at low and high energies is highlighted. We show that the observed matter-antimatter asymmetry of the Universe can naturally be interpreted through the resonant leptogenesis mechanism at the TeV scale. The lepton-flavor-violating rare decays, such as $\\mu \\to e + \\gamma$, are also discussed in the supersymmetric extension of the MSM.

Wan-lei Guo; Zhi-zhong Xing; Shun Zhou

2006-12-05T23:59:59.000Z

487

Abstract --This paper describes a practical technique for the opti-mal scheduling of control dominated systems minimizing the weighted  

E-Print Network [OSTI]

Abstract -- This paper describes a practical technique for the opti- mal scheduling of control is cru- cial for control dependent scheduling to accommodate practical archi- tectural goals. In contrast ­ to the exclusion of all other costs. A scheduler minimizing every control path separately may miss operation

California at Santa Barbara, University of

488

Shipping of Potentially Infectious Goods Why regulate: minimizing the potential for (1) Direct physical contact with the package contents  

E-Print Network [OSTI]

Shipping of Potentially Infectious Goods Why regulate: minimizing the potential for (1) Direct have to use Internet Explorer browser for this Web based course. Upon completion of training and passing a written exam, you will receive a certificate that is good for two years. After two years

489

that minimizes vehicle emissions during design of routes in congested environments with time-dependent travel speeds, hard time windows,  

E-Print Network [OSTI]

that minimizes vehicle emissions during design of routes in congested environments with time emissions, and several laboratory and field methods are available for estimating vehicle emissions rates (1 and then begins to increase again (2); hence, the relationship between emission rates and travel speed

Bertini, Robert L.

490

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 56, NO. 1, JANUARY 2007 81 A Loss-Minimization DTC Scheme  

E-Print Network [OSTI]

--This paper proposes a strategy to minimize the losses of an induction motor propelling an electric vehicle with the torque demand of the EV to achieve the efficiency-optimized drive performance. Moreover, among EV's motor electric propulsion features, the energy efficiency is a basic characteristic that is influenced by vehicle

491

Animal-Vehicle Collision Reduction Evaluation of Measures to Minimize Wildlife-Vehicle Collisions and Maintain Wildlife  

E-Print Network [OSTI]

Overview of Animal Detection and Animal Warning Systems in North American and Europe, Marcel P. Huijser.................................385 The Wildlife Protection System: Early Successes and Challenges Using Infrared Technology to DetectAnimal-Vehicle Collision Reduction Evaluation of Measures to Minimize Wildlife-Vehicle Collisions

McGowen, Patrick

492

A technique has been developed to accurately align a laser beam through a plasma channel by minimizing the  

E-Print Network [OSTI]

for radiation sources ­ ranging from coherent THz to free electron laser (FEL) x-ray sources and ThomsonAbstract A technique has been developed to accurately align a laser beam through a plasma channel by minimizing the shift in laser centroid and angle at the channel outptut. If only the shift in centroid

Geddes, Cameron Guy Robinson

493

756 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 4, NO. 3, JULY 2013 Minimization of Wind Farm Operational  

E-Print Network [OSTI]

756 IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, VOL. 4, NO. 3, JULY 2013 Minimization of Wind Farm) of wind turbine at time , denoted as 0 or 1. Energy consumed by an idle wind turbine. Electricity spot, and Guanglin Xu Abstract--Scheduling a wind farm in the presence of uncertain wind speed conditions

Kusiak, Andrew

494

Real Time Selective Harmonic Minimization for Multilevel Inverters Connected to Solar Panels Using Artificial Neural Network Angle Generation  

E-Print Network [OSTI]

Real Time Selective Harmonic Minimization for Multilevel Inverters Connected to Solar Panels Using varying DC input sources. Five 195 W solar panels were used as the DC source for each full bridge cells or solar panels and will consequently bring a voltage unbalance depending on the system dynamics

Tolbert, Leon M.

495

Two dark matter components in dark matter extension of the minimal supersymmetric standard model and the high energy positron spectrum in PAMELA/HEAT data  

SciTech Connect (OSTI)

We present a dark matter extension of the minimal supersymmetric standard model to give the recent trend of the high energy positron spectrum of the PAMELA/HEAT experiments. If the trend is caused indeed by dark matter, the minimal supersymmetric standard model needs to be extended. Here, we minimally extend the minimal supersymmetric standard model with one more dark matter component N together with a heavy lepton E and introduce the coupling e{sub R}E{sub R}{sup c}N{sub R}. This coupling naturally appears in the flipped SU(5) grand unification models. We also present the needed parameter ranges of these additional particles.

Huh, Ji-Haeng; Kim, Jihn E.; Kyae, Bumseok [Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)

2009-03-15T23:59:59.000Z

496

EXERGY ANALYSIS AND ENTROPY GENERATION MINIMIZATION OF THERMOELECTRIC WASTE HEAT RECOVERY FOR ELECTRONICS  

E-Print Network [OSTI]

Energy recovery from waste heat is attracting more and more attention. All electronic systems consume electricity but only a fraction of it is used for information processing and for human interfaces, such as displays. Lots of energy is dissipated as heat. There are some discussions on waste heat recovery from the electronic systems such as laptop computers. However the efficiency of energy conversion for such utilization is not very attractive due to the maximum allowable temperature of the heat source devices. This leads to very low limits of Carnot efficiency. In contrast to thermodynamic heat engines, Brayton cycle, free piston Stirling engines, etc., authors previously reported that thermoelectric (TE) can be a cost-effective device if the TE and the heat sink are co-optimized, and if some parasitic effects could be reduced. Since the heat already exists and it is free, the additional cost and energy payback time are the key measures to evaluate the value of the energy recovery system. In this report, we will start with the optimum model of the TE power generation system. Then, theoretical maximum output, cost impact and energy payback are evaluated in the examples of electronics system. Entropy Generation Minimization (EGM) is a method already familiar in thermal management of electronics. The optimum thermoelectric waste heat recovery design is compared with the EGM approach. Exergy analysis evaluates the useful energy flow in the optimum TE system. This comprehensive analysis is used to predict the potential future impact of the TE material development, as the dimensionless figure-ofmerit (ZT) is improved.

Kazuaki Yazawa; Ali Shakouri

497

Fusion hierarchies, T-systems and Y-systems of logarithmic minimal models  

E-Print Network [OSTI]

A Temperley-Lieb (TL) loop model is a Yang-Baxter integrable lattice model with nonlocal degrees of freedom. On a strip of width N, the evolution operator is the double-row transfer tangle D(u), an element of the TL algebra TL_N(beta) with loop fugacity beta=2cos(lambda). Similarly on a cylinder, the single-row transfer tangle T(u) is an element of the enlarged periodic TL algebra. The logarithmic minimal models LM(p,p') comprise a subfamily of the TL loop models for which the crossing parameter lambda=(p'-p)pi/p' is parameterised by coprime integers 0LM(1,2), D(u) and T(u) are known to satisfy inversion identities that allow us to obtain exact eigenvalues in any representation and for all system sizes N. The generalisation for p'>2 takes the form of functional relations for D(u) and T(u) of polynomial degree p'. These derive from fusion hierarchies of commuting transfer tangles D^{m,n}(u) and T^{m,n}(u) where D(u)=D^{1,1}(u) and T(u)=T^{1,1}(u). The fused transfer tangles are constructed from (m,n)-fused face operators involving Wenzl-Jones projectors P_k on k=m or k=n nodes. Some projectors P_k are singular for k>p'-1, but we argue that D^{m,n}(u) and T^{m,n}(u) are well defined for all m,n. For generic lambda, we derive the fusion hierarchies and the associated T- and Y-systems. For the logarithmic theories, the closure of the fusion hierarchies at n=p' translates into functional relations of polynomial degree p' for D^{m,1}(u) and T^{m,1}(u). We also derive the closure of the Y-systems for the logarithmic theories. The T- and Y-systems are the key to exact integrability and we observe that the underlying structure of these functional equations relate to Dynkin diagrams of affine Lie algebras.

Alexi Morin-Duchesne; Paul A. Pearce; Jorgen Rasmussen

2014-01-30T23:59:59.000Z

498

IMRT for Sinonasal Tumors Minimizes Severe Late Ocular Toxicity and Preserves Disease Control and Survival  

SciTech Connect (OSTI)

Purpose: To report late ocular (primary endpoint) and other toxicity, disease control, and survival (secondary endpoints) after intensity-modulated radiotherapy (IMRT) for sinonasal tumors. Methods and Materials: Between 1998 and 2009, 130 patients with nonmetastatic sinonasal tumors were treated with IMRT at Ghent University Hospital. Prescription doses were 70 Gy (n = 117) and 60-66 Gy (n = 13) at 2 Gy per fraction over 6-7 weeks. Most patients had adenocarcinoma (n = 82) and squamous cell carcinoma (n = 23). One hundred and one (101) patients were treated postoperatively. Of 17 patients with recurrent tumors, 9 were reirradiated. T-stages were T1-2 (n = 39), T3 (n = 21), T4a (n = 38), and T4b (n = 22). Esthesioneuroblastoma was staged as Kadish A, B, and C in 1, 3, and 6 cases, respectively. Results: Median follow-up was 52, range 15-121 months. There was no radiation-induced blindness in 86 patients available for late toxicity assessment ({>=}6 month follow-up). We observed late Grade 3 tearing in 10 patients, which reduced to Grade 1-2 in 5 patients and Grade 3 visual impairment because of radiation-induced ipsilateral retinopathy and neovascular glaucoma in 1 patient. There was no severe dry eye syndrome. The worst grade of late ocular toxicity was Grade 3 (n = 11), Grade 2 (n = 31), Grade 1 (n = 33), and Grade 0 (n = 11). Brain necrosis and osteoradionecrosis occurred in 6 and 1 patients, respectively. Actuarial 5-year local control and overall survival were 59% and 52%, respectively. On multivariate analysis local control was negatively affected by cribriform plate and brain invasion (p = 0.044 and 0.029, respectively) and absence of surgery (p = 0.009); overall survival was negatively affected by cribriform plate and orbit invasion (p = 0.04 and <0.001, respectively) and absence of surgery (p = 0.001). Conclusions: IMRT for sinonasal tumors allowed delivering high doses to targets at minimized ocular toxicity, while maintaining disease control and survival. Avoidance of severe dry eye syndrome and radiation-induced blindness suggests IMRT as a standard treatment for sinonasal tumors.

Duprez, Frederic, E-mail: frederic.duprez@ugent.be [Department of Radiotherapy, Ghent University Hospital, Ghent (Belgium); Madani, Indira; Morbee, Lieve [Department of Radiotherapy, Ghent University Hospital, Ghent (Belgium); Bonte, Katrien; Deron, Philippe; Domjan, Vilmos [Department of Head and Neck Surgery, Ghent University Hospital, Ghent (Belgium); Boterberg, Tom; De Gersem, Werner; De Neve, Wilfried [Department of Radiotherapy, Ghent University Hospital, Ghent (Belgium)

2012-05-01T23:59:59.000Z

499

Three-level spin system under decoherence-minimizing driving fields: Application to nitrogen-vacancy spin dynamics  

E-Print Network [OSTI]

Within the framework of a general three-level problem, the dynamics of the nitrogen-vacancy (NV) spin is studied for the case of a special type of external driving consisting of a set of continuous fields with decreasing intensities. Such a set has been proposed for minimizing coherence losses. Each new driving field with smaller intensity is designed to protect against the fluctuations induced by the driving field at the preceding step with larger intensity. We show that indeed this particular type of external driving minimizes the loss of coherence, using purity and entropy as quantifiers for this purpose. As an illustration, we study the coherence loss of an NV spin due to a surrounding spin bath of $^{13}$C nuclei.

Sunil K. Mishra; L. Chotorlishvili; A. R. P. Rau; J. Berakdar

2014-09-06T23:59:59.000Z

500

High-throughput continuous hydrothermal flow synthesis of ZnCe oxides: unprecedented solubility of Zn in the nanoparticle fluorite lattice  

Science Journals Connector (OSTI)

...was replaced with clean water (a minimum of 80ml being...were re-dispersed in water using an analogue vortex...were frozen in liquid nitrogen and then freeze-dried...at 200C with N2 (purge gas supplied by BOC, UK...5kW electrically powered water pre-heater was used...

2010-01-01T23:59:59.000Z