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1

RESTRICTED MODULES AND CONJECTURES FOR MODULES OF CONSTANT JORDAN TYPE  

E-Print Network [OSTI]

RESTRICTED MODULES AND CONJECTURES FOR MODULES OF CONSTANT JORDAN TYPE SEMRA ¨OZT¨URK KAPTANO GLU give a method to construct new restricted k[E]-modules of constant Jordan type from k[E]-modules of constant Jordan type and use it to realize several Jordan types. The constraints on the Jordan type

Kaptanoglu, Semra Ozturk

2

RESTRICTED MODULES AND CONJECTURES FOR MODULES OF CONSTANT JORDAN TYPE  

E-Print Network [OSTI]

RESTRICTED MODULES AND CONJECTURES FOR MODULES OF CONSTANT JORDAN TYPE SEMRA ¨OZT¨URK KAPTANO GLU Abstract. We introduce the class of restricted k[A]-modules and pt-Jordan types for a finite abelian p on Jordan types for modules of constant Jordan type when t is 1. We state conjectures giving constraints

Kaptanoglu, Semra Ozturk

3

Seismic pulse propagation with constant Q and stable probability distributions  

E-Print Network [OSTI]

The one-dimensional propagation of seismic waves with constant Q is shown to be governed by an evolution equation of fractional order in time, which interpolates the heat equation and the wave equation. The fundamental solutions for the Cauchy and Signalling problems are expressed in terms of entire functions (of Wright type) in the similarity variable and their behaviours turn out to be intermediate between those for the limiting cases of a perfectly viscous fluid and a perfectly elastic solid. In view of the small dissipation exhibited by the seismic pulses, the nearly elastic limit is considered. Furthermore, the fundamental solutions for the Cauchy and Signalling problems are shown to be related to stable probability distributions with index of stability determined by the order of the fractional time derivative in the evolution equation.

Francesco Mainardi; Massimo Tomirotti

2010-08-07T23:59:59.000Z

4

p-POWER POINTS AND MODULES OF CONSTANT p-POWER JORDAN TYPE  

E-Print Network [OSTI]

p-POWER POINTS AND MODULES OF CONSTANT p-POWER JORDAN TYPE SEMRA ¨OZT¨URK KAPTANO GLU Abstract. We modules of constant pt-Jordan type, constant pt-power-Jordan type as generalizations of modules of constant Jordan type, and pt-support, non-maximal pt-support spaces. We obtain a filtration of modules

Kaptanoglu, Semra Ozturk

5

Wronskian type determinants of orthogonal polynomials, Selberg type formulas and constant term identities  

Science Journals Connector (OSTI)

Let (p"n)"n be a sequence of orthogonal polynomials with respect to the measure @m. Let T be a linear operator acting in the linear space of polynomials P and satisfying deg(T(p))=deg(p)-1, for all polynomial p. We then construct a sequence of polynomials ... Keywords: Casorati determinants, Classical polynomials, Constant term identities, Discrete classical polynomials, Orthogonal polynomials, Selberg formulas

Antonio J. Durn

2014-05-01T23:59:59.000Z

6

Constant extension rate testing of Type 304L stainless steel in simulated waste tank environments. [Type 304L stainless steel  

SciTech Connect (OSTI)

New tanks for storage of low level radioactive wastes will be constructed at the Savannah River Site (SRS) of AISI Type 304L stainless steel (304L). The presence of chlorides and fluorides in the wastes may induce Stress Corrosion Cracking (SCC) in 304L. Constant Extension Rate Tests (CERT) were performed to determine the susceptibility of 304L to SCC in simulated wastes. In five of the six tests conducted thus far 304L was not susceptible to SCC in the simulated waste environments. Conflicting results were obtained in the final test and will be resolved by further tests. For comparison purposes the CERT tests were also performed with A537 carbon steel, a material similar to that utilized for the existing nuclear waste storage tanks at SRS.

Wiersma, B.J.

1992-01-01T23:59:59.000Z

7

Constant extension rate testing of Type 304L stainless steel in simulated waste tank environments  

SciTech Connect (OSTI)

New tanks for storage of low level radioactive wastes will be constructed at the Savannah River Site (SRS) of AISI Type 304L stainless steel (304L). The presence of chlorides and fluorides in the wastes may induce Stress Corrosion Cracking (SCC) in 304L. Constant Extension Rate Tests (CERT) were performed to determine the susceptibility of 304L to SCC in simulated wastes. In five of the six tests conducted thus far 304L was not susceptible to SCC in the simulated waste environments. Conflicting results were obtained in the final test and will be resolved by further tests. For comparison purposes the CERT tests were also performed with A537 carbon steel, a material similar to that utilized for the existing nuclear waste storage tanks at SRS.

Wiersma, B.J.

1992-11-01T23:59:59.000Z

8

Channel type and salmonid spawning distribution and abundance  

E-Print Network [OSTI]

with map-based and field investigations, indicates that stream channel type influences salmonid spawning nord-ouest du Pacifique sont adaptés, entre autres, aux caractéristiques temporelles de la mobilité du les distributions des chenaux selon leur pente dans plusieurs bassins du versant ouest de la côte nord

Montgomery, David R.

9

Individual eigenvalue distributions for chGSE-chGUE crossover and determination of low-energy constants in two-color QCD+QED  

E-Print Network [OSTI]

We compute statistical distributions of individual low-lying eigenvalues of random matrix ensembles interpolating chiral Gaussian symplectic and unitary ensembles. To this aim we use the Nystrom-type discretization of Fredholm Pfaffians and resolvents of the dynamical Bessel kernel containing a single crossover parameter \\rho. The \\rho-dependent distributions of the four smallest eigenvalues are then used to fit the Dirac spectra of modulated SU(2) lattice gauge theory, in which the reality of the staggered SU(2) Dirac operator is weakly violated either by the U(1) gauge field or by a constant background flux. Combined use of individual eigenvalue distributions is effective in reducing statistical errors in \\rho; its linear dependence on the imaginary chemical potential \\mu_I enables precise determination of the pseudo-scalar decay constant F of the SU(2) gauge theory from a small lattice. The U(1)-coupling dependence of an equivalent of F^2 \\mu_I^2 in the SU(2) x U(1) theory is also obtained.

Nishigaki, Shinsuke M

2015-01-01T23:59:59.000Z

10

Ignition quality determination of diesel fuels from hydrogen type distribution of hydrocarbons  

SciTech Connect (OSTI)

Hydrogen types of diesel like hydrocarbon fuels which have dominant effect on the ignition quality have been identified. A scheme of characterizing the chemistry of hydrocarbon fuels in terms of these hydrogen types using proton nuclear resonance spectrometry has been proposed. Using this analysis technique on 70 different diesel fuels, whose cetane numbers were determined on a number of standard cetane rating engines, an empirical expression which relates the ignition quality to the hydrogen type distribution of the fuels has been developed. The developed expression and the relationship between the ignition delay and cetane number imply that the effective activation energy term in the usual semiempirical ignition delay expression is not a constant for a given fuel but is a function of pressure and temperature as well as the fuel chemistry.

Gulder, O.L.; Glavincevski, B.

1986-02-01T23:59:59.000Z

11

Type Ia Supernova: Burning and Detonation in the Distributed Regime  

E-Print Network [OSTI]

A simple, semi-analytic representation is developed for nuclear burning in Type Ia supernovae in the special case where turbulent eddies completely disrupt the flame. The speed and width of the ``distributed'' flame front are derived. For the conditions considered, the burning front can be considered as a turbulent flame brush composed of corrugated sheets of well-mixed flames. These flames are assumed to have a quasi-steady-state structure similar to the laminar flame structure, but controlled by turbulent diffusion. Detonations cannot appear in the system as long as distributed flames are still quasi-steady-state, but this condition is violated when the distributed flame width becomes comparable to the size of largest turbulent eddies. When this happens, a transition to detonation may occur. For current best estimates of the turbulent energy, the most likely density for the transition to detonation is in the range 0.5 - 1.5 x 10^7 g cm^{-3}.

S. E. Woosley

2007-09-26T23:59:59.000Z

12

Abstract--This paper presents the impact of different types of load models in distribution network with distributed wind  

E-Print Network [OSTI]

as a major enabler of the smart grid for the integration of small and medium sized renewable energy basedAbstract--This paper presents the impact of different types of load models in distribution network with distributed wind generation. The analysis is carried out for a test distribution system representative

Pota, Himanshu Roy

13

Creol: a type-safe object-oriented model for distributed concurrent systems  

Science Journals Connector (OSTI)

Object-oriented distributed computing is becoming increasingly important for critical infrastructure in society. In standard object-oriented models, objects synchronize on method calls. These models may be criticized in the distributed setting for their ... Keywords: distributed object-oriented systems, type and effect system, type soundness

Einar Broch Johnsen; Olaf Owe; Ingrid Chieh Yu

2006-11-01T23:59:59.000Z

14

Classical statistical distributions can violate Bell-type inequalities  

E-Print Network [OSTI]

We investigate two-particle phase-space distributions in classical mechanics characterized by a well-defined value of the total angular momentum. We construct phase-space averages of observables related to the projection of the particles' angular momenta along axes with different orientations. It is shown that for certain observables, the correlation function violates Bell's inequality. The key to the violation resides in choosing observables impeding the realization of the counterfactual event that plays a prominent role in the derivation of the inequalities. This situation can have statistical (detection related) or dynamical (interaction related) underpinnings, but non-locality does not play any role.

A. Matzkin

2008-01-18T23:59:59.000Z

15

A Control Methodology for DFIG Type Wind Turbines Connected to Distribution Networks  

E-Print Network [OSTI]

A Control Methodology for DFIG Type Wind Turbines Connected to Distribution Networks N. K. Roy, H.roy.h.pota.md.mahmud)@adfa.edu.au Ahstract-This paper proposes a decentralised controller design for doubly-fed induction generators (DFIGs in operating conditions. Index Terms-distributed generation (DG), DFIG, H= norm, linear quadratic Gaussian (LQG

Pota, Himanshu Roy

16

Optical constants of cosmic carbon analogue grains I. Simulation of clustering by a modified continuous distribution of ellipsoids  

Science Journals Connector (OSTI)

......following condi- tions: (i) arc discharge between amorphous carbon electrodes...mbar (ACAR sample); (ii) arc discharge between the same type of electrodes...unit ten- sion of the applied electric field (Bohren & Huffman 1983......

V. G. Zubko; V. Mennella; L. Colangeli; E. Bussoletti

1996-10-11T23:59:59.000Z

17

PEAK FLUX DISTRIBUTIONS OF SOLAR RADIO TYPE-I BURSTS FROM HIGHLY RESOLVED SPECTRAL OBSERVATIONS  

SciTech Connect (OSTI)

Solar radio type-I bursts were observed on 2011 January 26 by high resolution observations with the radio telescope AMATERAS in order to derive their peak flux distributions. We have developed a two-dimensional auto burst detection algorithm that can distinguish each type-I burst element from complex noise storm spectra that include numerous instances of radio frequency interference (RFI). This algorithm removes RFI from the observed radio spectra by applying a moving median filter along the frequency axis. Burst and continuum components are distinguished by a two-dimensional maximum and minimum search of the radio dynamic spectra. The analysis result shows that each type-I burst element has one peak flux without double counts or missed counts. The peak flux distribution of type-I bursts derived using this algorithm follows a power law with a spectral index between 4 and 5.

Iwai, K. [Nobeyama Solar Radio Observatory, National Astronomical Observatory of Japan, Nobeyama, Nagano 384-1305 (Japan); Masuda, S.; Miyoshi, Y. [Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8601 (Japan); Tsuchiya, F.; Morioka, A.; Misawa, H., E-mail: kazumasa.iwai@nao.ac.jp [Planetary Plasma and Atmospheric Research Center, Tohoku University, Sendai, Miyagi 980-8578 (Japan)

2013-05-01T23:59:59.000Z

18

MESURE DE LA DISTRIBUTION RADIALE DU COURANT DANS UN PLASMA DU TYPE TOKAMAK,  

E-Print Network [OSTI]

85 MESURE DE LA DISTRIBUTION RADIALE DU COURANT DANS UN PLASMA DU TYPE TOKAMAK, A L'AIDE D plasma du type Tokamak à l'aide d'un faisceau de lithium neutre. On décrit les différentes parties du analyse. Finalement les résultats expérimentaux obtenus sur un Tokamak sont décrits. Les profils sont

Boyer, Edmond

19

Remote sensing-based characterization of plant functional type distributions at the Barrow Environmental Observatory  

SciTech Connect (OSTI)

Arctic ecosystems have been observed to be warming faster than the global average and are predicted to experience accelerated changes in climate due to global warming. Arctic vegetation is particularly sensitive to warming conditions and likely to exhibit shifts in species composition, phenology and productivity under changing climate. Mapping and monitoring of changes in vegetation is essential to understand the effect of climate change on the ecosystem functions. Vegetation exhibits unique spectral characteristics which can be harnessed to discriminate plant types and develop quantitative vegetation indices. We have combined high resolution multi-spectral remote sensing from the WorldView 2 satellite with LIDAR-derived digital elevation models to characterize the tundra landscape on the North Slope of Alaska. Classification of landscape using spectral and topographic characteristics yields spatial regions with expectedly similar vegetation characteristics. A field campaign was conducted during peak growing season to collect vegetation harvests from a number of 1m x 1m plots in the study region, which were then analyzed for distribution of vegetation types in the plots. Statistical relationships were developed between spectral and topographic characteristics and vegetation type distributions at the vegetation plots. These derived relationships were employed to statistically upscale the vegetation distributions for the landscape based on spectral characteristics. Vegetation distributions developed are being used to provide Plant Functional Type (PFT) maps for use in the Community Land Model (CLM).

Kumar, Jitendra; Hoffman, Forrest M.

2014-03-18T23:59:59.000Z

20

Ambient ion distributions in Saturns magnetosphere near Titan during a non-Voyager type interaction  

E-Print Network [OSTI]

V and 2.9 keV. Both species had a thermal speed of 200 km/s. The flow speed of the am- bient plasma with Titan?s atmosphere and ionosphere rather than a strong intrinsic magnetic field. This observed plasmaAmbient ion distributions in Saturn?s magnetosphere near Titan during a non-Voyager type

California at Berkeley, University of

Note: This page contains sample records for the topic "distribution type constant" 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

Climate and Soil Type Together Explain the Distribution of Microendemic Species in a Biodiversity Hotspot  

E-Print Network [OSTI]

Climate and Soil Type Together Explain the Distribution of Microendemic Species in a Biodiversity Biodiversite´ et d'Ecologie terrestre et marine, Aix-Marseille Universite´/ CNRS/IRD/UAPV, UMR 237 IRD, Centre in a Biodiversity Hotspot. PLoS ONE 8(12): e80811. doi:10.1371/journal.pone.0080811 Editor: Valerio Ketmaier

22

Impact of SCIG and DFIG Type Wind Turbine on the Stability of Distribution Networks: static and dynamic  

E-Print Network [OSTI]

Impact of SCIG and DFIG Type Wind Turbine on the Stability of Distribution Networks: static fed induction generator (DFIG) type wind turbine in distribution networks. The analysis is carried out and DFIG type wind turbines have significant impact on the static voltage stability, power loss

Pota, Himanshu Roy

23

Optimum design for BB84 quantum key distribution in tree-type passive optical networks  

E-Print Network [OSTI]

We show that there is a tradeoff between the useful key distribution bit rate and the total length of deployed fiber in tree-type passive optical networks for BB84 quantum key distribution applications. A two stage splitting architecture where one splitting is carried in the central office and a second in the outside plant and figure of merit to account for the tradeoff are proposed. We find that there is an optimum solution for the splitting ratios of both stages in the case of Photon Number Splitting (PNS) attacks and Decoy State transmission. We then analyze the effects of the different relevant physical parameters of the PON on the optimum solution.

Jose Capmany; Carlos R. Fernandez-Pousa

2011-03-24T23:59:59.000Z

24

Global distribution of total cloud cover and cloud type amounts over the ocean  

SciTech Connect (OSTI)

This is the fourth of a series of atlases to result from a study of the global cloud distribution from ground-based observations. The first two atlases (NCAR/TN-201+STR and NCAR/TN-241+STR) described the frequency of occurrence of each cloud type and the co-occurrence of different types, but included no information about cloud amounts. The third atlas (NCAR/TN-273+STR) described, for the land areas of the earth, the average total cloud cover and the amounts of each cloud type, and their geographical, diurnal, seasonal, and interannual variations, as well as the average base heights of the low clouds. The present atlas does the same for the ocean areas of the earth.

Warren, S.G.; Hahn, C.J.; London, J.; Chervin, R.M.; Jenne, R.L. (Washington Univ., Seattle, WA (USA). Dept. of Atmospheric Sciences; Colorado Univ., Boulder, CO (USA). Cooperative Inst. for Research in Environmental Sciences; Colorado Univ., Boulder, CO (USA). Dept. of Astrophysical, Planetary, and Atmospheric Sciences; National Center for Atmospheric Research, Boulder, CO (USA))

1988-12-01T23:59:59.000Z

25

Optimal allocation of multi-type distributed generators using backtracking search optimization algorithm  

Science Journals Connector (OSTI)

Abstract In this article, a very recently swarm optimization technique namely a backtracking search optimization algorithm (BSOA) is addressed to assign the distributed generators (DGs) along radial distribution networks. One of the main features of the BSOA is a single control parameter and not over sensitive to the initial value of this factor. The objective function is adapted with weighting factor to reduce the network real loss and enhance the voltage profile with the purpose of improving the operating performance. In addition, the combined power factor and reduction in network reactive power loss are spotted. Set of fuzzy expert rules using loss sensitivity factors and bus voltages are employed to identify the initial DGs locations. The proposed approach is attuned to tackle the shortfall of loss sensitivity factors and to decide the final placement of the DGs. Two types of the \\{DGs\\} are studied and investigated. The proposed method is demonstrated and validated thru many radial distribution networks with different sizes and complexities. The BSOA-based methodology can efficiently generate high-quality solutions compared to other competitive techniques in the literature.

Attia El-Fergany

2015-01-01T23:59:59.000Z

26

The Nuclear Spectral Energy Distribution of NGC 4395, The Least Luminous Type 1 Seyfert Galaxy  

E-Print Network [OSTI]

We present X-ray (ROSAT), infrared, and radio observations of NGC 4395, which harbors the optically least luminous type 1 Seyfert nucleus discovered thus far. In combination with published optical and ultraviolet spectra, we have used these data to assemble the broadband spectral energy distribution (SED) of the galaxy's nucleus. Interestingly, the SED of NGC 4395 differs markedly from the SEDs of both quasars and typical low-luminosity active galactic nuclei, which may be a manifestation of the different physical conditions (i.e., black hole masses, accretion rates, and/or accretion modes) that exist in these objects. The nuclear X-ray source in NGC 4395 is variable and has an observed luminosity of just ~ 10^38 ergs/s. Although this emission could plausibly be associated with either a weak active nucleus or a bright stellar-mass binary system, the optical and ultraviolet emission-line properties of the nucleus strongly suggest that the X-rays arise from a classical AGN.

E. C. Moran; A. V. Filippenko; L. C. Ho; J. C. Shields; T. Belloni; A. Comastri; S. L. Snowden; R. A. Sramek

1999-04-28T23:59:59.000Z

27

Analyses of multiplicity distributions of $e^{+}e^{-}$ and $e-p$ collisions by means of modified negative binomial distribution and Laguerre-type distribution Interrelation of solutions in stochastic processes  

E-Print Network [OSTI]

A pure birth stochastic process with several initial conditions is considered.We analyze multiplicity distributions of e^+e^- collisions and e-p collisions, usigthe Modified Negative Binomial Distribution (MNBD) and the Laguerre-type distribution. Several multiplicity distributions show the same minimum \\chi^2's values in analyses by means of two formulas: In these cases, we find that a parameter N contained in the MNBD becomes to be large. Taking large N limit in the MNBD, we find that the Laguerre-type distribution can be derived from it. Moreover, from the generalized MNBD we can also derive the generalized Glauber-Lachs formula. Finally stochastic properties of QCD and multiparticle dynamics are discussed.

Biyajima, M; Takei, K

1998-01-01T23:59:59.000Z

28

Analyses of multiplicity distributions of e^+e^- and e-p collisions by means of modified negative binomial distribution and Laguerre-type distribution: Interrelation of solutions in stochastic processes  

E-Print Network [OSTI]

A pure birth stochastic process with several initial conditions is considered.We analyze multiplicity distributions of e^+e^- collisions and e-p collisions, usigthe Modified Negative Binomial Distribution (MNBD) and the Laguerre-type distribution. Several multiplicity distributions show the same minimum \\chi^2's values in analyses by means of two formulas: In these cases, we find that a parameter N contained in the MNBD becomes to be large. Taking large N limit in the MNBD, we find that the Laguerre-type distribution can be derived from it. Moreover, from the generalized MNBD we can also derive the generalized Glauber-Lachs formula. Finally stochastic properties of QCD and multiparticle dynamics are discussed.

M. Biyajima; T. Osada; K. Takei

1998-05-08T23:59:59.000Z

29

1. Physical constants 1 1. PHYSICAL CONSTANTS  

E-Print Network [OSTI]

1. Physical constants 1 1. PHYSICAL CONSTANTS Table 1.1. Reviewed 2011 by P.J. Mohr (NIST). Mainly in parentheses after the values give the 1-standard-deviation uncertainties in the last digits; the corresponding also P.J. Mohr and D.B. Newell, "Resource Letter FC-1: The Physics of Fundamental Constants," Am. J

30

Imprecise Reliability Assessment and Decision-Making when the Type of the Probability Distribution of the Random Variables is  

E-Print Network [OSTI]

1 Imprecise Reliability Assessment and Decision-Making when the Type of the Probability Distribution of the Random Variables is Unknown Efstratios Nikolaidis Department of Mechanical Industrial@oakland.edu First ISSMO Internet Conference on Reliability-based Structural Optimization Keywords: Imprecise

Nikolaidis, Efstratios

31

Mountain Fen Distribution, Types and Restoration Priorities, San Juan Mountains, Colorado, USA  

Science Journals Connector (OSTI)

Mountain fens are vital ecosystems for habitat, biodiversity, water and carbon cycling, but there is little comprehensive information on their distribution, abundance or condition in any region of the western U.S...

Rod A. Chimner; Joanna M. Lemly; David J. Cooper

2010-08-01T23:59:59.000Z

32

The ATLAS 3D project XXIV. The intrinsic shape distribution of early-type galaxies  

Science Journals Connector (OSTI)

......European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching, Germany...Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching, Germany...given by the measurement errors. We mirror the resulting distribution around psi......

Anne-Marie Weijmans; P. T. de Zeeuw; Eric Emsellem; Davor Krajnovi?; Pierre-Yves Lablanche; Katherine Alatalo; Leo Blitz; Maxime Bois; Frdric Bournaud; Martin Bureau; Michele Cappellari; Alison F. Crocker; Roger L. Davies; Timothy A. Davis; Pierre-Alain Duc; Sadegh Khochfar; Harald Kuntschner; Richard M. McDermid; Raffaella Morganti; Thorsten Naab; Tom Oosterloo; Marc Sarzi; Nicholas Scott; Paolo Serra; Gijs Verdoes Kleijn; Lisa M. Young

2014-01-01T23:59:59.000Z

33

Holocene Sediment Types and Their Distribution in the Southern Persian Gulf  

Science Journals Connector (OSTI)

A simplified classification of the Holocene sediments based on textures and grain type results in fourteen major units, twelve of which are essentially carbonate in composition. A brief description and photograph...

C. W. Wagner; C. van der Togt

1973-01-01T23:59:59.000Z

34

Probability Distributions and Threshold Selection for Monte CarloType Tropical Cyclone Wind Speed Forecasts  

Science Journals Connector (OSTI)

Probabilistic wind speed forecasts for tropical cyclones from Monte Carlotype simulations are assessed within a theoretical framework for a simple unbiased Gaussian system that is based on feature size and location error that mimic tropical ...

Michael E. Splitt; Steven M. Lazarus; Sarah Collins; Denis N. Botambekov; William P. Roeder

2014-10-01T23:59:59.000Z

35

Human Papillomavirus Prevalence and Type Distribution in Male Anogenital Sites and Semen  

Science Journals Connector (OSTI)

...Sireesha Banduvula for their work in the laboratory; Dr. Katherine Stone for her assistance with study concept and design; and...2000;38:357-61. 22 Gravitt PE, Peyton CL, Apple RJ, Wheeler CM. Genotyping of 27 human papillomavirus types by using L1...

Carrie M. Nielson; Roberto Flores; Robin B. Harris; Martha Abrahamsen; Mary R. Papenfuss; Eileen F. Dunne; Lauri E. Markowitz; and Anna R. Giuliano

2007-06-01T23:59:59.000Z

36

Constraints on parton distribution functions and extraction of the strong coupling constant from the inclusive jet cross section in pp collisions at sqrt(s) = 7 TeV  

E-Print Network [OSTI]

The inclusive jet cross section for proton-proton collisions at a centre-of-mass energy of 7 TeV was measured by the CMS Collaboration at the LHC with data corresponding to an integrated luminosity of 5.0 inverse femtobarns. The measurement covers a phase space up to 2 TeV in jet transverse momentum and 2.5 in absolute jet rapidity. The statistical precision of these data leads to stringent constraints on the parton distribution functions of the proton. The data provide important input for the gluon density at high fractions of the proton momentum and for the strong coupling constant at large energy scales. Using predictions from perturbative quantum chromodynamics at next-to-leading order, complemented with electroweak corrections, the constraining power of these data is investigated and the strong coupling constant at the Z boson mass M[Z] is determined to be alpha[S(M[Z])} = 0.1185 +/- 0.0019 (exp) +0.0060 -0.0037 (theo), which is in agreement with the world average.

CMS Collaboration

2014-10-24T23:59:59.000Z

37

Constant Speed for Processing  

Science Journals Connector (OSTI)

Synduction motor combines constant speed of synchronous motor with ruggedness of induction motor ... CONVENTIONAL SYNCHRONOUS ELECTRIC MOTORS operate at constant speed, regardless of load and voltagefrequency is the determining factor. ...

1956-04-23T23:59:59.000Z

38

Improved characterization of reservoir behavior by integration of reservoir performances data and rock type distributions  

SciTech Connect (OSTI)

An integrated geological/petrophysical and reservoir engineering study was performed for a large, mature waterflood project (>250 wells, {approximately}80% water cut) at the North Robertson (Clear Fork) Unit, Gaines County, Texas. The primary goal of the study was to develop an integrated reservoir description for {open_quotes}targeted{close_quotes} (economic) 10-acre (4-hectare) infill drilling and future recovery operations in a low permeability, carbonate (dolomite) reservoir. Integration of the results from geological/petrophysical studies and reservoir performance analyses provide a rapid and effective method for developing a comprehensive reservoir description. This reservoir description can be used for reservoir flow simulation, performance prediction, infill targeting, waterflood management, and for optimizing well developments (patterns, completions, and stimulations). The following analyses were performed as part of this study: (1) Geological/petrophysical analyses: (core and well log data) - {open_quotes}Rock typing{close_quotes} based on qualitative and quantitative visualization of pore-scale features. Reservoir layering based on {open_quotes}rock typing {close_quotes} and hydraulic flow units. Development of a {open_quotes}core-log{close_quotes} model to estimate permeability using porosity and other properties derived from well logs. The core-log model is based on {open_quotes}rock types.{close_quotes} (2) Engineering analyses: (production and injection history, well tests) Material balance decline type curve analyses to estimate total reservoir volume, formation flow characteristics (flow capacity, skin factor, and fracture half-length), and indications of well/boundary interference. Estimated ultimate recovery analyses to yield movable oil (or injectable water) volumes, as well as indications of well and boundary interference.

Davies, D.K.; Vessell, R.K. [David K. Davies & Associates, Kingwood, TX (United States); Doublet, L.E. [Texas A& M Univ., College Station, TX (United States)] [and others

1997-08-01T23:59:59.000Z

39

Molecular dynamics studies on the NMR structures of rabbit prion protein wild-type and mutants: surface electrostatic charge distributions  

E-Print Network [OSTI]

Prion is a misfolded protein found in mammals that causes infectious diseases of the nervous system in humans and animals. Prion diseases are invariably fatal and highly infectious neurodegenerative diseases that affect a wide variety of mammalian species such as sheep and goats, cattle, deer, elk and humans etc. Recent studies have shown that rabbits have a low susceptibility to be infected by prion diseases with respect to other animals including humans. The present study employs molecular dynamics (MD) means to unravel the mechanism of rabbit prion proteins (RaPrPC) based on the recently available rabbit NMR structures (of the wild-type and its two mutants of two surface residues). The electrostatic charge distributions on the protein surface are the focus when analysing the MD trajectories. It is found that we can conclude that surface electrostatic charge distributions indeed contribute to the structural stability of wild-type RaPrPC; this may be useful for the medicinal treatment of prion diseases.

Zhang, Jiapu

2014-01-01T23:59:59.000Z

40

constant.inc  

E-Print Network [OSTI]

... with 1(read) completion } { 2 for status, and 3 for DMA control } { constants below for IBM DTC51C interface board } hddata = 0; { data port, bidirectional } hdcon...

Note: This page contains sample records for the topic "distribution type constant" 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

Distribution:  

Office of Legacy Management (LM)

JAN26 19% JAN26 19% Distribution: OR00 Attn: h.H.M.Roth DFMusser ITMM MMMann INS JCRyan FIw(2) Hsixele SRGustavson, Document rocm Formal file i+a@mmm bav@ ~@esiaw*cp Suppl. file 'Br & Div rf's s/health (lic.only) UNITED STATES ATOMIC ENERGY COMMISSION SPECIAL NUCLEAB MATERIAL LICENSE pursuant to the Atomic Energy Act of 1954 and Title 10, Code of Federal Regulations, Chapter 1, P&t 70, "Special Nuclear Material Reg)llatiqm," a license is hereby issued a$hortztng the licensee to rekeive and possess the special nuclear material designated below; to use such special nuclear mat&ial for the purpose(s) and at the place(s) designated below; and to transfer such material to per&s authorized to receive it in accordance with the regula,tions in said Part.

42

Cosmology with varying constants  

Science Journals Connector (OSTI)

...with a varying constant, say c, one can always, by a suitable rede nition of units of measurement, transform it into another theory...it follows that all we have to do is carry out appropriate rede nitions of our units of length, time and energy. Again, these...

2002-01-01T23:59:59.000Z

43

The fundamental constants and theory  

Science Journals Connector (OSTI)

...1. Introduction The fundamental constants appear as parameters...least-squares adjustment of the fundamental constants (Mohr Taylor...are the following: How does theory enter into the CODATA evaluation of the fundamental constants? What are the...

2005-01-01T23:59:59.000Z

44

Determination of nanoparticle structure type, size and strain distribution from X-ray data for monatomic f.c.c.-derived non-crystallographic nanoclusters  

Science Journals Connector (OSTI)

Whole-profile-fitting least-squares techniques are successfully applied to simulated and experimental diffraction patterns of monatomic f.c.c.-derived non-crystallographic nanoclusters, with the aim of extracting information about structure-type concentration, size and strain distribution.

Cervellino, A.

2003-09-08T23:59:59.000Z

45

Constant voltage ultracapacitor  

Science Journals Connector (OSTI)

Ultracapacitors have attracted lots of attention recently due to their growing use in hybrid vehicles and in energy storage applications for the smart grid. A very undesirable feature of ultracapacitors is the fact that the voltage drops as the capacitor is discharged. DC-DC converters are employed at present to convert the voltage of the ultracapacitor to constant voltage; however these converters typically do not operate if the voltage of the ultracapacitor drops below 1?V. In addition DC-DC converters suffer from well-known size/efficiency tradeoffs. This paper introduces a novel new ultracapacitor that is characterized by constant voltage. The new ultracapacitor does not utilize familiar energy conversion principles. Rather operation depends on an embedded electromechanical system that actually alters the capacitance of the ultracapacitor as the device is discharged. Due to a simple proportionality relationship between charge capacitance and voltage the voltage remains constant. Theoretical and experimental investigations have shown that the embedded mechanism for altering the capacitance has an efficiency of 99% or higher.

Ezzat G. Bakhoum

2012-01-01T23:59:59.000Z

46

Distribution change of oxygen vacancies in layered perovskite type(Sr, La){sub n+1}Fe{sub n}O{sub 3n+1} (n=3)  

SciTech Connect (OSTI)

To elucidate characteristic oxygen vacancy formation in layered perovskite (Sr, La){sub n+1}Fe{sub n}O{sub 3n+1} with the perovskite layer number: n=3, oxygen vacancy content ? of the (Sr{sub 0.775}La{sub 0.225}){sub 4}Fe{sub 3}O{sub 10??} (SLF4310) was investigated using a titration technique and a thermogravimetric analysis. The equilibrium constant K for the reduction reaction: Oo{sup }+2Fe{sub Fe}{sup ?} (Fe{sup 4+})=1/2O{sub 2}+Vo{sup ??}+2Fe{sub Fe}{sup }(Fe{sup 3+}) was estimated using the vacancy content ?. The Arrhenius plot of the K reveals slope change at approximately 775 C. From the Rietveld analysis, the oxygen vacancies are the most remarkable at the O2 (O4) sites at lower (higher) temperatures than about 800 C, which temperature is approximately comparable with that of slope change in the K. These facts mean that distribution of vacancy sites in the SLF4310 changes at approximately 775 C, accompanying no structural phase transition. The vacancy distribution change affects to the ion conductivity of the SLF4310. - Graphical abstract: Crystal structure of (Sr{sub 0.775}La{sub 0.225}){sub 4}Fe{sub 3}O{sub 10??} (SLF4310) at 1000 C. Display Omitted - Highlights: Distribution change of oxygen vacancies is appeared at approximately 775 C. The distribution change with no structure phase transition is the first observation. The vacancy distribution change affects the ion conductivity of the SLF4310.

Kagomiya, Isao, E-mail: kagomiya@nitech.ac.jp; Jimbo, Keigo; Kakimoto, Ken-ichi

2013-11-15T23:59:59.000Z

47

Unitaxial constant velocity microactuator  

DOE Patents [OSTI]

A uniaxial drive system or microactuator capable of operating in an ultra-high vacuum environment is disclosed. The mechanism includes a flexible coupling having a bore therethrough, and two clamp/pusher assemblies mounted in axial ends of the coupling. The clamp/pusher assemblies are energized by voltage-operated piezoelectrics therewithin to operatively engage the shaft and coupling causing the shaft to move along its rotational axis through the bore. The microactuator is capable of repeatably positioning to sub-nanometer accuracy while affording a scan range in excess of 5 centimeters. Moreover, the microactuator generates smooth, constant velocity motion profiles while producing a drive thrust of greater than 10 pounds. The system is remotely controlled and piezoelectrically driven, hence minimal thermal loading, vibrational excitation, or outgassing is introduced to the operating environment. 10 figs.

McIntyre, T.J.

1994-06-07T23:59:59.000Z

48

Irrationality of the Zeta Constants  

E-Print Network [OSTI]

A general technique for proving the irrationality of the zeta constants z(s) for odd s = 2n + 1 => 3 from the known irrationality of the beta constants L(2n+1) is developed in this note. The results on the irrationality of the zeta constants z(2n), n => 1, and z(3) are well known, but the results on the irrationality for the zeta constants z(2n+1), n => 2, are new, and these results seem to confirm that these constants are irrational numbers. In addition, a result on the irrationality measures indicates that mu(L(2n+1)) <= mu(z(2n+1)).

N. A. Carella

2014-04-08T23:59:59.000Z

49

Reliability concerns with logical constants in Xilinx FPGA designs  

SciTech Connect (OSTI)

In Xilinx Field Programmable Gate Arrays logical constants, which ground unused inputs and provide constants for designs, are implemented in SEU-susceptible logic. In the past, these logical constants have been shown to cause the user circuit to output bad data and were not resetable through off-line rcconfiguration. In the more recent devices, logical constants are less problematic, though mitigation should still be considered for high reliability applications. In conclusion, we have presented a number of reliability concerns with logical constants in the Xilinx Virtex family. There are two main categories of logical constants: implicit and explicit logical constants. In all of the Virtex devices, the implicit logical constants are implemented using half latches, which in the most recent devices are several orders of magnitudes smaller than configuration bit cells. Explicit logical constants are implemented exclusively using constant LUTs in the Virtex-I and Virtex-II, and use a combination of constant LUTs and architectural posts to the ground plane in the Virtex-4. We have also presented mitigation methods and options for these devices. While SEUs in implicit and some types of explicit logical constants can cause data corrupt, the chance of failure from these components is now much smaller than it was in the Virtex-I device. Therefore, for many cases, mitigation might not be necessary, except under extremely high reliability situations.

Quinn, Heather M [Los Alamos National Laboratory; Graham, Paul [Los Alamos National Laboratory; Morgan, Keith [Los Alamos National Laboratory; Ostler, Patrick [Los Alamos National Laboratory; Allen, Greg [JPL; Swift, Gary [XILINX; Tseng, Chen W [XILINX

2009-01-01T23:59:59.000Z

50

Energy Efficiency Potential for Distribution Transformers in the APEC Economies  

E-Print Network [OSTI]

the Standard for Dry-type distribution Transformers. Sampat,depending on the economy. Dry-type distribution transformersliquid-type and dry-type distribution transformers,

Letschert, Virginie

2014-01-01T23:59:59.000Z

51

The Hubble constant and dark energy from cosmological distance measures  

E-Print Network [OSTI]

We study how the determination of the Hubble constant from cosmological distance measures is affected by models of dark energy and vice versa. For this purpose, constraints on the Hubble constant and dark energy are investigated using the cosmological observations of cosmic microwave background, baryon acoustic oscillations and type Ia suprenovae. When one investigates dark energy, the Hubble constant is often a nuisance parameter, thus it is usually marginalized over. On the other hand, when one focuses on the Hubble constant, simple dark energy models such as a cosmological constant and a constant equation of state are usually assumed. Since we do not know the nature of dark energy yet, it is interesting to investigate the Hubble constant assuming some types of dark energy and see to what extent the constraint on the Hubble constant is affected by the assumption concerning dark energy. We show that the constraint on the Hubble constant is not affected much by the assumption for dark energy. We furthermore show that this holds true even if we remove the assumption that the universe is flat. We also discuss how the prior on the Hubble constant affects the constraints on dark energy and/or the curvature of the universe.

Kazuhide Ichikawa; Tomo Takahashi

2007-10-22T23:59:59.000Z

52

Small sample size power for some tests of constant hazard function  

E-Print Network [OSTI]

. This method has been applied to testing for a fit of the exponential distribution. Four different. tests of constant hazard function were used in this research. They are described in detail in Section 2. Two of the tests were developed by Epstein [1960... that on a whole these four particular tests would give a definite insight into the behavior of power for constant hazard function tests. SECTION 2 CONSTANT HAZARD FUNCTION TESTS Background As stated in Section 1, four different tests of constant...

Fercho, Wayne Ward

2012-06-07T23:59:59.000Z

53

Cosmological models with variable constants  

E-Print Network [OSTI]

The behavior of the constants, G,c,h,a,e,m and Lambda, considering them as variable, in the framework of a flat cosmological model with FRW symmetries described by a bulk viscous fluid and considering mechanisms of adiabatic matter creation are investigated. Within two models; one with radiation predominance and another of matter predominance, this behavior are studied.

J. A. Belinchon

1999-07-01T23:59:59.000Z

54

Fundamental Constants of the Muon  

Science Journals Connector (OSTI)

Three precise measurements exist on static properties of the muon. These are the g factor, g-2, and the frequency of the 3D-2P transition in mesonic phosphorus. They are combined to obtain the best fit to the fundamental constants of the muon.

G. Shapiro and L. M. Lederman

1962-02-01T23:59:59.000Z

55

Two-dimensional model of the air flow and temperature distribution in a cavity-type heat receiver of a solar stirling engine  

SciTech Connect (OSTI)

A theoretical study on the air flow and temperature in the heat receiver, affected by free convection, of a Stirling Engine for a Dish/Stirling Engine Power System is presented. The standard {kappa}-{epsilon} turbulence model for the fluid flow has been used and the boundary conditions employed were obtained using a second level mathematical model of the Stirling Engine working cycle. Physical models for the distribution of the solar insolation from the Concentrator on the bottom and side walls of the cavity-type heat receiver have been taken into account. The numerical results show that most of the heat losses in the receiver are due to re-radiation from the cavity and conduction through the walls of the cavity. It is in the region of the boundary of the input window of the heat receiver where there is a sensible reduction in the temperature in the shell of the heat exchangers and this is due to the free convection of the air. Further, the numerical results show that convective heat losses increase with decreasing tilt angle.

Makhkamov, K.K.; Ingham, D.B.

1999-11-01T23:59:59.000Z

56

The ATLAS 3D project - XVI. Physical parameters and spectral line energy distributions of the molecular gas in gas-rich early-type galaxies  

E-Print Network [OSTI]

[Abridged] We present a detailed study of the physical properties of the molecular gas in a sample of 18 molecular gas-rich early-type galaxies (ETGs) from the ATLAS$ 3D sample. Our goal is to better understand the star formation processes occurring in those galaxies, starting here with the dense star-forming gas. We use existing integrated $^{12}$CO(1-0, 2-1), $^{13}$CO(1-0, 2-1), HCN(1-0) and HCO$^{+}$(1-0) observations and present new $^{12}$CO(3-2) single-dish data. From these, we derive for the first time the average kinetic temperature, H$_{2}$ volume density and column density of the emitting gas, this using a non-LTE theoretical model. Since the CO lines trace different physical conditions than of those the HCN and HCO$^{+}$ lines, the two sets of lines are treated separately. We also compare for the first time the predicted CO spectral line energy distributions (SLEDs) and gas properties of our molecular gas-rich ETGs with those of a sample of nearby well-studied disc galaxies. The gas excitation con...

Bayet, Estelle; Davis, Timothy A; Young, Lisa M; Crocker, Alison F; Alatalo, Katherine; Blitz, Leo; Bois, Maxime; Bournaud, Frdric; Cappellari, Michele; Davies, Roger L; de Zeeuw, P T; Duc, Pierre-Alain; Emsellem, Eric; Khochfar, Sadegh; Krajnovi?, Davor; Kuntschner, Harald; McDermid, Richard M; Morganti, Raffaella; Naab, Thorsten; Oosterloo, Tom; Sarzi, Marc; Scott, Nicholas; Serra, Paolo; Weijmans, Anne-Marie

2012-01-01T23:59:59.000Z

57

MINIMAL CURVES OF CONSTANT TORSION THOMAS A. IVEY  

E-Print Network [OSTI]

moving along , the functions p, r, y may be visualized as pitch, roll, and yaw, respectively. Suppose two of some given distribution of rank two, or equivalently, of a Pfaffian system I of rank four. We may ask by Chow's theorem [7], which says that if a smooth constant rank Pfaffian system I on manifold M contains

Ivey, Thomas A.

58

CALCULATING OPTICAL CONSTANTS OF GLAZING MATERIALS  

E-Print Network [OSTI]

Solar Energy CALCULATING OPTICAL CONSTANTS OF GLAZING MATERIALS Michael Rub August 1981 TWO-WEEK LOAN

Rubin, Michael

2013-01-01T23:59:59.000Z

59

Relaxing a large cosmological constant  

E-Print Network [OSTI]

The cosmological constant (CC) problem is the biggest enigma of theoretical physics ever. In recent times, it has been rephrased as the dark energy problem in order to encompass a wider spectrum of possibilities. It is, in any case, a polyhedric puzzle with many faces, including the cosmic coincidence problem, i.e. why the density of matter is presently so close to the CC density. However, the oldest, toughest and most intriguing face of this polyhedron is the big CC problem, namely why the measured value of the CC at present is so small as compared to any typical density scale existing in high energy physics, especially taking into account the many phase transitions that our Universe has undergone since the early times, including inflation. In this letter, we propose to extend the field equations of General Relativity by including a class of invariant terms that automatically relax the value of the CC irrespective of the initial size of the vacuum energy in the early epochs. We show that, at late times, the Universe enters an eternal de Sitter stage mimicking a tiny positive cosmological constant. Thus, these models could solve the big CC problem and have also a bearing on the cosmic coincidence problem. Remarkably, they mimic the LCDM model to a large extent, but they still leave some characteristic imprints that should be testable in the next generation of experiments.

Florian Bauer; Joan Sola; Hrvoje Stefancic

2009-07-23T23:59:59.000Z

60

Determination of the Hubble Constant Using Cepheids  

E-Print Network [OSTI]

This paper introduces a statistical treatment to use Cepheid variable stars as distance indicators. The expansion rate of the Universe is also studied here through deriving the value of the Hubble constant H0. A Gaussian function approximation is proposed to fit the absolute magnitude and period of Cepheid variables in our galaxy. The calculations are carried out on samples of Cepheids observed in 23 galaxies to derive the distance modulus (DM) of these galaxies based on the frequency distributions of their periods and intrinsic apparent magnitudes. The DM is the difference between the apparent magnitude for extragalactic Cepheids and the absolute magnitude of the galactic Cepheids at maximum number. It is calculated by using the comparison of the period distribution of Cepheids in our galaxy and in other galaxies. This method is preferred due to its simplicity to use and its efficiency in providing reliable DM. A linear fit with correlation coefficient of 99.68% has been found between the published distance ...

Abdel-Sabour, Mohamed; Issa, Issa Ali; El-Nawawy, Mohamed Saleh; Kordi, Ayman; Almostafa, Zaki; El-Said, Ahmad Essam; Ali, Gamal Bakr

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

An experimental study of a heatexchanger-type steam reformer with a low steam/carbon ratio. Effect of carbon deposition on the distribution of flow among the catalyst tubes and of temperature among and along the tubes  

SciTech Connect (OSTI)

An experimental heat-exchanger-type steam reformer containing eight full-sized tubes of catalyst was operated at low steam/carbon ratios up to the point of onset of carbon deposition. The following phenomena were investigated: the effect of carbon deposition on the distribution of the gas stream among the tubes, the effect of this distribution on the nonuniformity of temperature on the outer surface of the tubes, and the distribution of carbon deposition in the beds of catalyst. At steam/carbon ratios close to the onset of carbon deposition, the average pressure differential through the tubes rose at a rate of 0.1-0.5 kg/cm/sup 2/ . hr. The temperature at the bottom of the catalyst tubes varied about 10 /sup 0/C due to the deposition of carbon. Most of the carbon is deposited within about 1,000 mm from the top of the bed.

Miyasuai T; Kosaka, S.; Suzuki, A.; Yoshioka, S.

1985-07-01T23:59:59.000Z

62

Distribution Patterns of Metals Contamination in Sediments Based on Type Regional Development on the Intertidal Coastal Zones of the Persian Gulf, Iran  

Science Journals Connector (OSTI)

This study was performed to determine the variation of metals concentrations (Pb, Cd, Zn, and Cu) in surface sediments based on type region development from ten sites on the intertidal coastal zone of the Persian

Ali Kazemi; Alireza Riyahi Bakhtiari

2012-01-01T23:59:59.000Z

63

Solar system tests of the cosmological constant  

E-Print Network [OSTI]

We discuss the influence of the cosmological constant $\\Lambda$ on the gravitational equations of motion of bodies with arbitrary masses and eventually solve the two-body problem. Observational constraints are derived from measurements of the periastron advance in stellar systems, in particular binary pulsars and the solar system. For the latter we consider also the change in the mean motion due to $\\Lambda$. Up to now, Earth and Mars data give the best constraint, $\\Lambda \\sim 10^{-36} \\mathrm{km}^{-2}$. If properly accounting for the gravito-magnetic effect, this upper limit on $\\Lambda$ could greatly improve in the near future thanks to new data from planned or already operating space-missions. Dark matter or modifications of the Newtonian inverse-square law in the solar system are discussed as well. Variations in the $1/r^2$ behavior are considered in the form of either a possible Yukawa-like interaction or a modification of gravity of MOND type.

Philippe Jetzer; Mauro Sereno

2007-11-23T23:59:59.000Z

64

Shape from Contour: Straight Homogeneous Generalized Cylinders and Constant Cross Section Generalized Cylinders  

Science Journals Connector (OSTI)

Abstract We analyze the properties of Straight Homogeneous Generalized Cylinders (SHGCs) and Constant Cross Section Generalized Cylinders (CGCs), and derive the types of symmetries that the limb boundaries and cross sections of these objects produce ... Keywords: Shape from contour, staright homogeneous generalized cones, constant cross section generalized cones, symmetry analysis, shape constraints.

Faith Ulupinar; Ramakant Nevatia

1995-02-01T23:59:59.000Z

65

Emergent cosmological constant from colliding electromagnetic waves  

E-Print Network [OSTI]

In this study we advocate the view that the cosmological constant is of electromagnetic (em) origin, which can be generated from the collision of em shock waves coupled with gravitational shock waves. The wave profiles that participate in the collision have different amplitudes. It is shown that, circular polarization with equal amplitude waves does not generate cosmological constant. We also prove that the generation of the cosmological constant is related to the linear polarization. The addition of cross polarization generates no cosmological constant. Depending on the value of the wave amplitudes, the generated cosmological constant can be positive or negative. We show additionally that, the collision of nonlinear em waves in a particular class of Born-Infeld theory also yields a cosmological constant.

M. Halilsoy; S. Habib Mazharimousavi; O. Gurtug

2014-10-15T23:59:59.000Z

66

Constant voltage electro-slag remelting control  

DOE Patents [OSTI]

A system for controlling electrode gap in an electro-slag remelt furnace has a constant regulated voltage and an electrode which is fed into the slag pool at a constant rate. The impedance of the circuit through the slag pool is directly proportional to the gap distance. Because of the constant voltage, the system current changes are inversely proportional to changes in gap. This negative feedback causes the gap to remain stable. 1 fig.

Schlienger, M.E.

1996-10-22T23:59:59.000Z

67

Cosmological Constant and Axions in String Theory  

SciTech Connect (OSTI)

String theory axions appear to be promising candidates for explaining cosmological constant via quintessence. In this paper, we study conditions on the string compactifications under which axion quintessence can happen. For sufficiently large number of axions, cosmological constant can be accounted for as the potential energy of axions that have not yet relaxed to their minima. In compactifications that incorporate unified models of particle physics, the height of the axion potential can naturally fall close to the observed value of cosmological constant.

Svrcek, Peter; /Stanford U., Phys. Dept. /SLAC

2006-08-18T23:59:59.000Z

68

Distributed Algorithms Distributed Transactions  

E-Print Network [OSTI]

Algorithms© Gero Mühl 8 Concurrency Control serial RC (ReCoverable) ACA (Avoiding Cascading Aborts) ST (StricDistributed Algorithms Distributed Transactions PD Dr.-Ing. Gero Mühl Kommunikations- und Betriebssysteme Fakultät für Elektrotechnik u. Informatik Technische Universität Berlin #12;Distributed Algorithms

Wichmann, Felix

69

Newtonian Constant of Gravitation International Consortium  

E-Print Network [OSTI]

Newtonian Constant of Gravitation International Consortium I. BACKGROUND Recent measurements of the Newtonian constant of gravitation G are in disagreement, with discrepancies that are roughly ten times forces on a laboratory scale. It also raises the question of whether the Newtonian force law

70

The Constant Radiance Term Lszl Neumann 1  

E-Print Network [OSTI]

is zero. The self- 1 Email: neumann@hungary.net #12; L. Neumann: The Constant Radiance Term - 2 information, nor the calculation of form factors. A constant radiance is extracted from the solution in every of the residuum problem is zero. The self-emitting term of the residuum problem can either be positive or negative

71

Inflation with a negative cosmological constant  

SciTech Connect (OSTI)

We find a unique way of realizing inflation through cyclic phases in a universe with negative vacuum energy. According to the second law of thermodynamics entropy monotonically increases from cycle to cycle, typically by a constant factor. This means that the scale factor at the same energy density in consecutive cycles also increases by a constant factor. If the time period of the oscillations remains approximately constant then this leads to an 'overall' exponential growth of the scale factor, mimicking inflation. A graceful exit from this inflationary phase is possible as a dynamical scalar field can take us from the negative to a positive energy vacuum during the last contracting phase.

Biswas, Tirthabir [Department of Physics, Institute for Gravitation and the Cosmos, Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania, 16802 (United States); Mazumdar, Anupam [Physics Department, Lancaster University, Lancaster, LA1 4YB (United Kingdom); Niels Bohr Institute, Copenhagen, Blegdamsvej-17, DK-2100 (Denmark)

2009-07-15T23:59:59.000Z

72

TASI Lectures on the cosmological constant  

E-Print Network [OSTI]

discovery in tones of wonder and stupefaction, as a mysterious dark energy,dark energy. 5.3 The real second problem By sharpening the cosmological constant problem, the discovery

Bousso, Raphael

2008-01-01T23:59:59.000Z

73

Optical constants of liquid and solid methane  

Science Journals Connector (OSTI)

The optical constants nr + ini of liquid methane and phase I solid methane were determined over the entire spectral range by the use of various data sources published in the...

Martonchik, John V; Orton, Glenn S

1994-01-01T23:59:59.000Z

74

FRIB cryogenic distribution system  

SciTech Connect (OSTI)

The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

Ganni, Venkatarao [JLAB; Dixon, Kelly D. [JLAB; Laverdure, Nathaniel A. [JLAB; Knudsen, Peter N. [JLAB; Arenius, Dana M. [JLAB; Barrios, Matthew N. [Michigan State; Jones, S. [Michigan State; Johnson, M. [Michigan State; Casagrande, Fabio [Michigan State

2014-01-01T23:59:59.000Z

75

FRIB cryogenic distribution system  

SciTech Connect (OSTI)

The Michigan State University Facility for Rare Isotope Beams (MSU-FRIB) helium distribution system has been revised to include bayonet/warm valve type disconnects between each cryomodule and the transfer line distribution system, similar to the Thomas Jefferson National Accelerator Facility (JLab) and the Spallation Neutron Source (SNS) cryogenic distribution systems. The heat loads at various temperature levels and some of the features in the design of the distribution system are outlined. The present status, the plans for fabrication, and the procurement approach for the helium distribution system are also included.

Ganni, V.; Dixon, K.; Laverdure, N.; Knudsen, P.; Arenius, D. [Thomas Jefferson National Accelerator Facility (JLab), Newport News, VA 23606 (United States); Barrios, M.; Jones, S.; Johnson, M.; Casagrande, F. [Facility for Rare Isotope Beams (FRIB), Michigan State University, East Lansing, MI 48824 (United States)

2014-01-29T23:59:59.000Z

76

Blood Types  

E-Print Network [OSTI]

Broadcast Transcript: According to the Japanese, you can tell a lot about a person by their blood type: Type A is the farmer, calm and responsible; Type B is the hunter, independent and creative; Type AB is humanistic, ...

Hacker, Randi; Tsutsui, William

2007-03-14T23:59:59.000Z

77

Asymptotic safety and the cosmological constant  

E-Print Network [OSTI]

We study the non-perturbative renormalisation of quantum gravity in four dimensions. Taking care to disentangle physical degrees of freedom, we observe the topological nature of conformal fluctuations arising from the functional measure. The resulting beta functions possess an asymptotically safe fixed point with a global phase structure leading to classical general relativity for positive, negative or vanishing cosmological constant. If only the conformal fluctuations are quantised we find an asymptotically safe fixed point predicting a vanishing cosmological constant on all scales. At this fixed point we reproduce the critical exponent, $\

Kevin Falls

2014-08-01T23:59:59.000Z

78

Black Hole Constraints on Varying Fundamental Constants  

SciTech Connect (OSTI)

We apply the generalized second law of thermodynamics and derive upper limits on the variation in the fundamental constants. The maximum variation in the electronic charge permitted for black holes accreting and emitting in the present cosmic microwave background corresponds to a variation in the fine-structure constant of {delta}{alpha}/{alpha}{approx_equal}2x10{sup -23} per second. This value matches the variation measured by Webb et al. [Phys. Rev. Lett. 82, 884 (1999); Phys. Rev. Lett. 87, 091301 (2001)] using absorption lines in the spectra of distant quasars and suggests the variation mechanism may be a coupling between the electron and the cosmic photon background.

MacGibbon, Jane H. [Department of Physics and Chemistry, University of North Florida, Jacksonville, Florida 32224 (United States)

2007-08-10T23:59:59.000Z

79

Electromagnetic corrections to pseudoscalar decay constants  

E-Print Network [OSTI]

The effects of electromagnetic interactions on pseudoscalar decay constants are investigated. Using a compact QED and QCD action we are able to resolve differences of about 0.1 MeV. We obtain the preliminary results f_pi^0-f_pi^+/- =0.09(3) MeV and f_D^0-f_D^+/- =0.79(11) MeV for light and charmed pseudoscalar decay constants on a N_f=2 nonperturbatively improved Sheikholeslami-Wohlert ensemble.

Benjamin Glaessle; Gunnar S. Bali

2011-11-16T23:59:59.000Z

80

Environmental Dependence of Masses and Coupling Constants  

E-Print Network [OSTI]

We construct a class of scalar field models coupled to matter that lead to the dependence of masses and coupling constants on the ambient matter density. Such models predict a deviation of couplings measured on the Earth from values determined in low-density astrophysical environments, but do not necessarily require the evolution of coupling constants with the redshift in the recent cosmological past. Additional laboratory and astrophysical tests of \\Delta \\alpha and \\Delta(m_p/m_e) as functions of the ambient matter density are warranted.

Keith A. Olive; Maxim Pospelov

2007-09-24T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Low-Cost Constant Temperature Heating Block  

Science Journals Connector (OSTI)

Low-Cost Constant Temperature Heating Block ... Secondary school and undergraduate laboratories can build many units for the cost of a commercially comparable one while simultaneously putting to practice several electronic principles taught in most instrumental analysis courses. ... Cost-Effective Teacher ...

Charles G. Shevlin; Ward Coppersmith; Christopher Fish; Stanley Vlock; William Vellema

1997-08-01T23:59:59.000Z

82

Surface Tension and the Cosmological Constant  

E-Print Network [OSTI]

The astronomically observed value of the cosmological constant is small but non-zero. This raises two questions together known as the cosmological constant problem a) why is lambda so nearly zero? b) why is lambda not EXACTLY zero? Sorkin has proposed that b) can be naturally explained as a one by square root N fluctuation by invoking discreteness of spacetime at the Planck scale due to quantum gravity. In this paper we shed light on these questions by developing an analogy between the cosmological constant and the surface tension of membranes. The ``cosmological constant problem'' has a natural analogue in the membrane context: the vanishingly small surface tension of fluid membranes provides an example where question a) above arises and is answered. We go on to find a direct analogue of Sorkin's proposal for answering question b) in the membrane context, where the discreteness of spacetime translates into the molecular structure of matter. We propose analogue experiments to probe a small and fluctuating surface tension in fluid membranes. A counterpart of dimensional reduction a la Kaluza-Klein and large extra dimensions also appears in the physics of fluid membranes.

Joseph Samuel; Supurna Sinha

2006-04-18T23:59:59.000Z

83

Density Perturbations for Running Cosmological Constant  

E-Print Network [OSTI]

The dynamics of density and metric perturbations is investigated for the previously developed model where the decay of the vacuum energy into matter (or vice versa) is due to the renormalization group (RG) running of the cosmological constant (CC) term. The evolution of the CC depends on the single parameter \

Julio C. Fabris; Ilya L. Shapiro; Joan Sola

2007-01-26T23:59:59.000Z

84

A Time-dependent Cosmological Constant Phenomenology  

E-Print Network [OSTI]

We construct a cosmological toy model in which a step-function ``cosmological constant'' is taken into consideration beside ordinary matter. We assume that $\\Lambda$ takes two values depending on the epoch, and matter goes from a radiation dominated era to a dust dominated era. The model is exactly solvable and it can be compared with recent observations.

Salvatore Capozziello; Ruggiero de Ritis; Alma Angela Marino

1996-05-29T23:59:59.000Z

85

The Cosmological Constant and the String Landscape  

E-Print Network [OSTI]

Theories of the cosmological constant fall into two classes, those in which the vacuum energy is fixed by the fundamental theory and those in which it is adjustable in some way. For each class we discuss key challenges. The string theory landscape is an example of an adjustment mechanism. We discuss the status of this idea, and future directions.

Joseph Polchinski

2006-04-21T23:59:59.000Z

86

Infrared Spectroscopy and Optical Constants of Porous Amorphous...  

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

Spectroscopy and Optical Constants of Porous Amorphous Solid Water. Infrared Spectroscopy and Optical Constants of Porous Amorphous Solid Water. Abstract: Reflection-absorption...

87

STABILITY CONSTANTS OF NP(V) COMPLEXES WITH FLOURIDE AND SULFATE AT VARIABLE TEMPERATURES  

SciTech Connect (OSTI)

A solvent extraction method was used to determine the stability constants of Np(V) complexes with fluoride and sulfate in 1.0 M NaClO{sub 4} from 25 C to 60 C. The distribution ratio of Np(V) between the organic and aqueous phases was found to decrease as the concentrations of fluoride and sulfate were increased. Stability constants of the 1:1 Np(V)-fluoride complexes and the 1:1 Np(V)-sulfate and 1:2 Np(V)-sulfate complexes, dominant in the aqueous phase under the experimental conditions, were calculated from the effect of [F{sup -}] and [SO{sub 4}{sup 2-}] on the distribution ratio. The enthalpy and entropy of complexation were calculated from the stability constants at different temperatures by using the Van't Hoff equation.

Y. Xia; J.I. Friese; D.A. Moore; L. Rao

2005-07-11T23:59:59.000Z

88

Quantum Exclusion of Positive Cosmological Constant?  

E-Print Network [OSTI]

We show that a positive cosmological constant is incompatible with the quantum-corpuscular resolution of de Sitter metric in form of a coherent state. The reason is very general and is due to the quantum self-destruction of the coherent state because of the scattering of constituent graviton quanta. This process creates an irreversible quantum clock, which precludes eternal de Sitter. It also eliminates the possibility of Boltzmann brains and Poincare recurrences. This effect is expected to be part of any microscopic theory that takes into account the quantum corpuscular structure of the cosmological background. This observation puts the cosmological constant problem in a very different light, promoting it, from a naturalness problem, into a question of quantum consistency. We are learning that quantum gravity cannot tolerate exceedingly-classical sources.

Gia Dvali; Cesar Gomez

2014-12-27T23:59:59.000Z

89

Boundary problems for one-dimensional kinetic equation with constant collision frequency  

E-Print Network [OSTI]

For the one-dimensional linear kinetic equation analytical solutions of problems about temperature jump and weak evaporation (condensation) over flat surface are received. The equation has integral of collisions BGK (Bhatnagar, Gross and Krook) and constant frequency of collisions of molecules. Distribution of concentration, mass speed and temperature is received.

A. L. Bugrimov; A. V. Latyshev; A. A. Yushkanov

2014-04-17T23:59:59.000Z

90

Cosmological Constant Problems and Renormalization Group  

E-Print Network [OSTI]

The Cosmological Constant Problem emerges when Quantum Field Theory is applied to the gravitational theory, due to the enormous magnitude of the induced energy of the vacuum. The unique known solution of this problem involves an extremely precise fine-tuning of the vacuum counterpart. We review a few of the existing approaches to this problem based on the account of the quantum (loop) effects and pay special attention to the ones involving the renormalization group.

Ilya L. Shapiro; Joan Sola

2007-01-05T23:59:59.000Z

91

A comparison of various calculational methods for constant volatility ratio, constant reflux multicomponent distillation  

E-Print Network [OSTI]

for Figures 17, 18, nd 19. . . 83 XIV. Tabulation of Empirical Correlation (Equation 48). 85 ZIQUR S Page l. Operating Data for the Depropanization of a Light Naphtha. 26 2. Composition of Vapor Rising from Plates in a Column Containi. ng an Infinite... for lg constant- doublet separation systems in which the molal liquid and vapor flows remain constant within each section of the column. An empirical correlation (Equation 48) relating the error of the "apcroximate" method to process variables...

Hurst, James William

1952-01-01T23:59:59.000Z

92

Electricity Distribution  

Science Journals Connector (OSTI)

High voltage (HV) distribution grids have nominal voltages of up ... the grid that connects distribution to the transmission substations and also supplies large industrial customers requiri...

Toms Gmez

2013-01-01T23:59:59.000Z

93

34 Chemical Shifts and Coupling Constants for CHP  

Science Journals Connector (OSTI)

It contains 31P NMR data (chemical shift, coupling constant), structural diagram, and solvent of CHP

M. Kumar

2013-01-01T23:59:59.000Z

94

Precision determination of the strong coupling constant  

E-Print Network [OSTI]

In this thesis we study the event shapes variable thrust. Event shape variables are observables that characterize the shape of the distribution of the final state particles of a reaction. We take advantage of the formalism ...

Abbate, Riccardo

2012-01-01T23:59:59.000Z

95

Alternative to the principle of constant speed of light  

E-Print Network [OSTI]

To consider a medium carrying light and electromagnetic waves is impossible, when this medium shall have properties according to the principle of constant speed of light, that is, isotropy of speed of light in every system of reference. Therefore, with principle of constant speed of light abandoned, the so-called medium synchronization of clocks is defined, yielding isotropy solely in the system at rest and anisotropy in all moving systems. From medium synchronization the appropriate coordinate transformation is developed, the so-called medium transformation, a Galilean type of transformation, thus maintaining simultaneity between all participant systems of reference and changing the form of Maxwells equations to the extended Maxwell equations. Despite the fact that medium transformation violates Lorentz invariance and the principle of relativity, it is demonstrated that the results from medium transformation and extended Maxwell equations are fully compliant with observable phenomena. Moreover, it is shown that the concept of a medium, a preferred frame of reference, is compatible not only with medium transformation, but also with Lorentz transformation and with theory of special relativity, so it is quite possible now to consider a realistic medium. Finally, a discrepancy is exposed within theory of special relativity, giving rise to assume a preferred frame of reference even in special relativity.

Herbert Weiss

2006-06-28T23:59:59.000Z

96

Scalar field collapse with negative cosmological constant  

E-Print Network [OSTI]

The formation of black holes or naked singularities is studied in a model in which a homogeneous time-dependent scalar field with an exponential potential couples to four dimensional gravity with negative cosmological constant. An analytic solution is derived and its consequences are discussed. The model depends only on one free parameter, which determines the equation of state and decides the fate of the spacetime. Without fine tuning the value of this parameter the collapse ends in a generic formation of a black hole or a naked singularity. The latter case violates the cosmic censorship conjecture.

R. Baier; Hiromichi Nishimura; S. A. Stricker

2014-10-13T23:59:59.000Z

97

Scalar field collapse with negative cosmological constant  

E-Print Network [OSTI]

The formation of black holes or naked singularities is studied in a model in which a homogeneous time-dependent scalar field with an exponential potential couples to four dimensional gravity with negative cosmological constant. An analytic solution is derived and its consequences are discussed. The model depends only on one free parameter which determines the equation of state and decides the fate of the spacetime. Depending on the value of this parameter the collapse ends in a black hole or a naked singularity. The latter case violates the cosmic censorship conjecture.

Baier, R; Stricker, S A

2014-01-01T23:59:59.000Z

98

Cosmological Constant and the Speed of Light  

E-Print Network [OSTI]

By exploring the relationship between the propagation of electromagnetic waves in a gravitational field and the light propagation in a refractive medium, it is shown that, in the presence of a positive cosmological constant, the velocity of light will be smaller than its special relativity value. Then, restricting again to the domain of validity of geometrical optics, the same result is obtained in the context of wave optics. It is argued that this phenomenon and the anisotropy in the velocity of light in a gravitational field are produced by the same mechanism.

W. R. Esposito Miguel; J. G. Pereira

2000-06-28T23:59:59.000Z

99

Property:Study Type | Open Energy Information  

Open Energy Info (EERE)

Type Type Jump to: navigation, search This is a property of type Page. Pages using the property "Study Type" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Long-term Monitoring + Distributed Generation Study/615 kW Waukesha Packaged System + Laboratory Test + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Field Test + Distributed Generation Study/Arrow Linen + Long-term Monitoring + Distributed Generation Study/Dakota Station (Minnegasco) + Case Study + Distributed Generation Study/Elgin Community College + Case Study + Distributed Generation Study/Emerling Farm + Long-term Monitoring + Distributed Generation Study/Floyd Bennett + Long-term Monitoring + Distributed Generation Study/Harbec Plastics + Long-term Monitoring +

100

Type Fusion  

Science Journals Connector (OSTI)

Fusion is an indispensable tool in the arsenal ... Less well-known, but equally valuable is type fusion, which states conditions for fusing an application ... algebra. We provide a novel proof of type fusion base...

Ralf Hinze

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Casimir energy for surfaces with constant conductivity  

E-Print Network [OSTI]

We consider the vacuum energy of the electromagnetic field in systems characterized by a constant conductivity using the zeta-regularization approach. The interaction in two cases is investigated: two infinitely thin parallel sheets and an infinitely thin spherical shell. We found that the Casimir energy for the planar system is always attractive and it has the same characteristic distance dependence as the interaction for two perfect semi-infinite metals. The Casimir energy for the spherical shell depends on the inverse radius of the sphere, but it maybe negative or positive depending on the value of the conductivity. If the conductivity is less than a certain critical value, the interaction is attractive, otherwise the Casimir force is repulsive regardless of the spherical shell radius.

Nail Khusnutdinov; D. Drosdoff; Lilia M. Woods

2014-04-09T23:59:59.000Z

102

Eternal Higgs inflation and cosmological constant problem  

E-Print Network [OSTI]

We investigate the Higgs potential beyond the Planck scale in the superstring theory, under the assumption that the supersymmetry is broken at the string scale. We identify the Higgs field as a massless state of the string, which is indicated by the fact that the bare Higgs mass can be zero around the string scale. We find that, in the large field region, the Higgs potential is connected to a runaway vacuum with vanishing energy, which corresponds to opening up an extra dimension. We verify that such universal behavior indeed follows from the toroidal compactification of the non-supersymmetric $SO(16)\\times SO(16)$ heterotic string theory. We show that this behavior fits in the picture that the Higgs field is the source of the eternal inflation. The observed small value of the cosmological constant of our universe may be understood as the degeneracy with this runaway vacuum, which has vanishing energy, as is suggested by the multiple point criticality principle.

Hamada, Yuta; Oda, Kin-ya

2015-01-01T23:59:59.000Z

103

Universal equations and constants of turbulent motion  

E-Print Network [OSTI]

This paper presents a parameter-free theory of shear-generated turbulence at asymptotically high Reynolds numbers in incompressible fluids. It is based on a two-fluids concept. Both components are materially identical and inviscid. The first component is an ensemble of quasi-rigid dipole-vortex tubes as quasi-particles in chaotic motion. The second is a superfluid performing evasive motions between the tubes. The local dipole motions follow Helmholtz' law. The vortex radii scale with the energy-containing length scale. Collisions between quasi-particles lead either to annihilation (likewise rotation, turbulent dissipation) or to scattering (counterrotation, turbulent diffusion). There are analogies with birth and death processes of population dynamics and their master equations. For free homogeneous decay the theory predicts the TKE to follow 1/t. With an adiabatic condition at the wall it predicts the logarithmic law with von Karman's constant as 1/\\sqrt{2 pi} = 0.399. Likewise rotating couples form dissipat...

Baumert, Helmut Z

2012-01-01T23:59:59.000Z

104

Dielectric Constant and Transport Mechanism of Percolated Polyaniline Nanoclay Composites.  

Science Journals Connector (OSTI)

Dielectric Constant and Transport Mechanism of Percolated Polyaniline Nanoclay Composites. ... We report the dielectric constant and transport mechanism of intercalated nanoclaypolyaniline composite, an industrially ready to use novel nanocomposite, which is prepared by a simple mechanochemical method. ...

Mini Vellakkat; Archana Kamath; S. Raghu; Sharanappa Chapi; Devendrappa Hundekal

2014-09-30T23:59:59.000Z

105

Supply Fan Control for Constant Air Volume Air Handling Units  

E-Print Network [OSTI]

Since terminal boxes do not have a modulation damper in constant volume (CV) air handling unit (AHU) systems, zone reheat coils have to be modulated to maintain the space temperature with constant supply airflow. This conventional control sequence...

Cho, Y.; Wang, G.; Liu, M.

2007-01-01T23:59:59.000Z

106

Direct Test of the Time-Independence of Fundamental Nuclear Constants Using the Oklo Natural Reactor  

E-Print Network [OSTI]

[NOTE: This 1983 preprint is being uploaded to arXiv.org after the death of its author, who supported online distribution of his work. Contact info of the submitter is at http://ilya.cc .] The positions of neutron resonances have been shown to be highly sensitive to the variation of fundamental nuclear constants. The analysis of the measured isotopic shifts in the natural fossil reactor at Oklo gives the following restrictions on the possible rates of the interaction constants variation: strong ~2x10^-19 yr^-1, electromagnetic ~5x10^-18 yr^-1, weak ~10^-12 yr^-1. These limits permit to exclude all the versions of nuclear constants contemporary variation discussed in the literature. URL: http://alexonline.info >. For more recent analyses see hep-ph/9606486, hep-ph/0205206 and astro-ph/0204069 .

Alexander I. Shlyakhter

2003-07-03T23:59:59.000Z

107

The determination of best values of the fundamental physical constants  

Science Journals Connector (OSTI)

...Discussion Meeting Issue The fundamental constants of physics, precision...calls to mind an axiom of the fundamental constants field, namely...uncertainties.) Although it does not ensure that an unsuspected...uncertainty of interest in the fundamental constants field at that time...

2005-01-01T23:59:59.000Z

108

Holographic Dark Energy with Cosmological Constant  

E-Print Network [OSTI]

Inspired by the multiverse scenario, we study a heterotic dark energy model in which there are two parts, the first being the cosmological constant and the second being the holographic dark energy, thus this model is named the $\\Lambda$HDE model. By studying the $\\Lambda$HDE model theoretically, we find that the parameters $c$ and $\\Omega_{hde}$ are divided into a few domains in which the fate of the universe is quite different. We investigate dynamical behaviors of this model, and especially the future evolution of the universe. We perform fitting analysis on the cosmological parameters in the $\\Lambda$HDE model by using the recent observational data. We find the model yields $\\chi^2_{\\rm min}=426.27$ when constrained by Planck+SNLS3+BAO+HST, comparable to the results of the HDE model (428.20) and the concordant $\\Lambda$CDM model (431.35). At 68.3\\% CL, we obtain $-0.07<\\Omega_{\\Lambda0}<0.68$ and correspondingly $0.04<\\Omega_{hde0}<0.79$, implying at present there is considerable degeneracy bet...

Hu, Yazhou; Li, Nan; Zhang, Zhenhui

2015-01-01T23:59:59.000Z

109

Universal equations and constants of turbulent motion  

E-Print Network [OSTI]

This paper presents a parameter-free theory of shear-generated turbulence at asymptotically high Reynolds numbers in incompressible fluids. It is based on a two-fluids concept. Both components are materially identical and inviscid. The first component is an ensemble of quasi-rigid dipole-vortex tubes as quasi-particles in chaotic motion. The second is a superfluid performing evasive motions between the tubes. The local dipole motions follow Helmholtz' law. The vortex radii scale with the energy-containing length scale. Collisions between quasi-particles lead either to annihilation (likewise rotation, turbulent dissipation) or to scattering (counterrotation, turbulent diffusion). There are analogies with birth and death processes of population dynamics and their master equations. For free homogeneous decay the theory predicts the TKE to follow 1/t. With an adiabatic condition at the wall it predicts the logarithmic law with von Karman's constant as 1/\\sqrt{2 pi} = 0.399. Likewise rotating couples form dissipative patches almost at rest ($\\rightarrow$ intermittency) wherein the spectrum evolves like an "Apollonian gear" as discussed first by Herrmann, 1990. On this basis the prefactor of the 3D-wavenumber spectrum is predicted as (1/3)(4 pi)^{2/3}=1.8; in the Lagrangian frequency spectrum it is simply 2. The results are situated well within the scatter range of observational, experimental and DNS results.

Helmut Z. Baumert

2012-03-22T23:59:59.000Z

110

Universal constants and equations of turbulent motion  

E-Print Network [OSTI]

In the spirit of Prandtl [1926], for turbulence at high Reynolds number we present an analogy with the kinetic theory of gases, with dipoles made of Thorpe's [1977] quasi-solid vortex tubes as frictionless, incompressible but deformable quasi-particles. Their movements are governed by Helmholtz' elementary vortex rules applied locally. A contact interaction or 'collision' leads either to random scatter of a trajectory or to the formation of two likewise rotating, fundamentally unstable whirls forming a dissipative patch slowly rotating around its center of mass which is almost at rest. This approach predicts von Karman's constant as 1/sqrt(2 pi) = 0.399 and the spatio-temporal dynamics of energy-containing time and length scales controlling turbulent mixing Baumert [2009]. A link to turbulence spectra was missing so far. In the present paper it is shown that the above image of random vortex-dipole movements is compatible with Kolmogorov's turbulence spectra if dissipative patches, beginning as two likewise ro...

Baumert, Helmut Z

2011-01-01T23:59:59.000Z

111

The Ccr4-Not Complex Independently Controls both Msn2-Dependent Transcriptional Activationvia a Newly Identified Glc7/Bud14 Type I Protein Phosphatase Moduleand TFIID Promoter Distribution  

Science Journals Connector (OSTI)

...subjected to heat stress, the distribution pattern of TBP...promoters. Loss of Not5 caused...Accordingly, loss of Not5 consistently...mentioning that the heat shock-induced changes in distribution of Taf8 (and...unaffected by the loss of Not5 (Table...

Eve Lenssen; Nicole James; Ivo Pedruzzi; Frdrique Dubouloz; Elisabetta Cameroni; Ruth Bisig; Laurent Maillet; Michel Werner; Johnny Roosen; Katarina Petrovic; Joris Winderickx; Martine A. Collart; Claudio De Virgilio

2005-01-01T23:59:59.000Z

112

Variation of stability constants of thorium citrate complexes and of thorium hydrolysis constants with ionic strength  

SciTech Connect (OSTI)

Citrate is among the organic anions that are expected to be present in the wastes planned for deposition in the Waste Isolation Pilot Plant repository. In this study, a solvent extraction method has been used to measure the stability constants of Thorium(IV)[Th(IV)] with citrate anions in aqueous solutions with (a) NaClO{sub 4} and (b) NaCl as the background electrolytes. The ionic strengths were varied up to 5 m (NaCl) and 14 m (NaClO{sub 4}). The data from the NaClO{sub 4} solutions at varying pH values were used to calculate the hydrolysis constants for formation of Th(OH){sup 3+} at the different ionic strengths.

Choppin, G.R.; Erten, H.N.; Xia, Y.X. [Florida State Univ., Tallahassee, FL (United States)

1995-09-01T23:59:59.000Z

113

Broken gauge symmetry in a Bose gas with constant particle number  

E-Print Network [OSTI]

The existence of broken gauge symmetries in Bose-Einstein condensates is still controversially discussed in science, since it would not conserve the total number of particles. Here, it is shown for the first time that non-random condensate and non-condensate phase distributions may arise from local particle number breaking in a Bose gas with constant particle number, while the global U(1)-gauge symmetry of the system is preserved due to particle number conservation.

Alexej Schelle

2014-12-13T23:59:59.000Z

114

The variation of the fine structure constant: testing the dipole model with thermonuclear supernovae  

E-Print Network [OSTI]

The large-number hypothesis conjectures that fundamental constants may vary. Accordingly, the spacetime variation of fundamental constants has been an active subject of research for decades. Recently, using data obtained with large telescopes a phenomenological model in which the fine structure constant might vary spatially has been proposed. We test whether this hypothetical spatial variation of {\\alpha}, which follows a dipole law, is compatible with the data of distant thermonuclear supernovae. Unlike previous works, in our calculations we consider not only the variation of the luminosity distance when a varying {\\alpha} is adopted, but we also take into account the variation of the peak luminosity of Type Ia supernovae resulting from a variation of {\\alpha}. This is done using an empirical relation for the peak bolometric magnitude of thermonuclear supernovae that correctly reproduces the results of detailed numerical simulations. We find that there is no significant difference between the several phenome...

Kraiselburd, Lucila; Negrelli, Carolina; Berro, Enrique Garca

2014-01-01T23:59:59.000Z

115

Elastic constants of single crystal Hastelloy X at elevated temperatures  

SciTech Connect (OSTI)

An acoustic time of flight technique is described in detail for measuring the elastic constants of cubic single crystals that allows for the constants to be determined at elevated temperature. Although the overall technique is not new, various aspects of the present work may prove extremely useful to others interested in finding these values, especially for aerospace materials applications. Elastic constants were determined for the nickel based alloy, Hastelloy X from room temperature to 1,000 C. Accurate elastic constants were needed as part of an effort to predict both polycrystal mechanical properties and the nature of grain induced heterogeneous mechanical response. The increased accuracy of the acoustically determined constants resulted in up to a 15% change in the predicted stresses in individual grains. These results indicate that the use of elastic single crystal constants of pure nickel as an approximation for the constants of gas turbine single crystal alloys, which is often done today, is inaccurate.

Canistraro, H.A. [Univ. of Hartford, CT (United States). Dept. of Mechanical and Audio Engineering Technology; Jordan, E.H.; Shi Shixiang [Univ. of Connecticut, Storrs, CT (United States); Favrow, L.H.; Reed, F.A. [United Technologies Research Center, East Hartford, CT (United States)

1998-07-01T23:59:59.000Z

116

Universal constants and equations of turbulent motion  

E-Print Network [OSTI]

In the spirit of Prandtl's conjecture of 1926, for turbulence at high Reynolds number we present an analogy with the kinetic theory of gases, with dipoles made of quasi-rigid and 'dressed' vortex tubes as frictionless, incompressible but deformable quasi-particles. Their movements are governed by Helmholtz' elementary vortex rules applied locally. A contact interaction or 'collision' leads either to random scatter of a trajectory or to the formation of two likewise rotating, fundamentally unstable whirls forming a dissipative patch slowly rotating around its center of mass which is almost at rest. This approach predicts von Karman's constant as 1/sqrt(2 pi) = 0.399 and the spatio-temporal dynamics of energy-containing time and length scales controlling turbulent mixing [Baumert 2009]. A link to turbulence spectra was missing so far. In the present paper it is shown that the above image of random vortex-dipole movements is compatible with Kolmogorov's turbulence spectra if dissipative patches, beginning as two likewise rotating eddies, evolve locally into a space-filling bearing in the sense of Herrmann [1990], i.e. into an "Apollonian gear". Its parts and pieces are incompressible and flexibly deformable vortex tubes which are frictionless, excepting the dissipative scale of size zero. For steady and locally homogeneous conditions our approach predicts the dimensionless pre-factor in the 3D Eulerian wavenumber spectrum as [(4 pi)^2/3]/3 = 1.8, and in the Lagrangian frequency spectrum as 2. Our derivations rest on geometry, methods from many-particle physics, and on elementary conservation laws.

Helmut Z. Baumert

2011-07-25T23:59:59.000Z

117

Distribution Workshop  

Broader source: Energy.gov [DOE]

On September 24-26, 2012, the GTT presented a workshop on grid integration on the distribution system at the Sheraton Crystal City near Washington, DC.

118

Melanin Types  

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

Melanin Types Melanin Types Name: Irfan Location: N/A Country: N/A Date: N/A Question: What are different types of melanins? And what are the functions of these types? Replies: Hi Irfan! Melanin is a dark compound or better a photoprotective pigment. Its major role in the skin is to absorb the ultraviolet (UV) light that comes from the sun so the skin is not damaged. Sun exposure usually produces a tan at the skin that represents an increase of melanin pigment in the skin. Melanin is important also in other areas of the body, as the eye and the brain., but it is not completely understood what the melanin pigment does in these areas. Melanin forms a special cell called melanocyte. This cell is found in the skin, in the hair follicle, and in the iris and retina of the eye.

119

The Analysis of Hydrocarbon Distillates for Group Types Using HPLC With Dielectric Constant Detection: A Review  

Science Journals Connector (OSTI)

......David Talbot Day, chief of the Division of Mineral Resources of the American Geological Survey...the color and composition of Pennsylvania green petroleum after percolation through a column of powdered lime stone. In August of 1900, Day reported......

Paul C. Hayes; Jr.; Steven D. Anderson

1988-05-01T23:59:59.000Z

120

ON THE WEAK-TYPE CONSTANT OF THE BEURLING-AHLFORS ...  

E-Print Network [OSTI]

tion of G, the two unimodular terms cancel out and the integral value does ...... B. Johnson and Joram Lindenstrauss, eds., Handbook of the Geometry of Banach.

2008-08-22T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

The Constant Rank Condition and Second Order Constraint ...  

E-Print Network [OSTI]

Nov 13, 2009 ... The Constant Rank condition for feasible points of nonlinear ... stant Rank condition is, in addition, a second order constraint qualification.

2009-11-13T23:59:59.000Z

122

Air temperature effect on thermal models for ventilated dry-type transformers  

Science Journals Connector (OSTI)

The temperature of the air surrounding the windings of ventilated dry-type transformers is an important factor in the cooling of the windings since they are cooled only by the air. In particular, inner windings are sensitive to the air temperature in vertical cooling ducts. This study presents air temperature effect on the temperatures in foil-type inner winding for the dry-type transformers. A transformer rated at 2000kVA was selected for the research and temperature distribution was calculated under constant and varying air temperatures inside vertical ducts at three different loads. The 2-D transient heat diffusion equation was solved using the finite element method by coupling it with the vector potential equation due to non-uniformly generated heat caused by eddy currents in the foil winding. The calculated temperatures at constant and varying air temperatures are presented together with experimental values. The numerical and experimental results of this study showed that the air temperature affects the accuracy of temperatures in foil-type inner winding greatly.

Moonhee Lee; Hussein A. Abdullah; Jan C. Jofriet; Dhiru Patel; Murat Fahrioglu

2011-01-01T23:59:59.000Z

123

Wealth Distribution  

Science Journals Connector (OSTI)

Walter: What is a just wealth distribution? In my view, it is one that results from respect for proper initial homesteading, for resulting private property rights, and, finally, from any legitimate subsequent ...

Four Arrows; Walter Block

2011-01-01T23:59:59.000Z

124

Special Distribution  

Office of Legacy Management (LM)

Special Distribution Special Distribution Issued: December 1977 ',, Radiological Survey and Decontamination of the Former Main Technical Area (TA-1) at Los Alamos, New Mexico Compiled by A. John Ahlquist Alan K. Stoker Linda K. Trocki c laboratory of, the University of California LOS ALAMOS, NEW MEXICO 87545 An Alfirmdve Action/Equal Opportunity Employer ..-_- .-- .--.-. c T -,--... _ _._-r..l __,.. - .-,_.. ..- _._ -- .--. " . . _ . - . c- - . . . _ -. . _ . - . - . _ - - n - _ _~ ~_. __ _ ~~_ --..&e+ L.';; CONTENTS ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._____ 1 EXECUTIVE SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .._... _._ 2 I. BACKGROUND .............................................. 15

125

Codes of constant Lee or Euclidean weight Jay A. Wood  

E-Print Network [OSTI]

Codes of constant Lee or Euclidean weight Jay A. Wood Department of Mathematics, Computer Science & Statistics Purdue University Calumet Hammond, Indiana 46323 2094 USA wood@calumet.purdue.edu http: www.calumet.purdue.edu public math wood Abstract. Carlet 2 has determined the linear codes over Z=4 of constant Lee weight

Wood, Jay

126

The Duffing Oscillator And Linearization Techniques For Its Motion Constants  

E-Print Network [OSTI]

constant is known, solving the system is no longer needed to analyze the characteristics of the system. Motion constants are time independent integrals that are hard to find for nonlinear dynamic systems. We chose the Duffing Oscillator as a higher order...

Rashdan, Mouath

2014-01-16T23:59:59.000Z

127

Maximum Constant Boost Control of the Z-Source Inverter  

E-Print Network [OSTI]

Maximum Constant Boost Control of the Z-Source Inverter Miaosen Shen1 , Jin Wang1 , Alan Joseph1 Laboratory Abstract: This paper proposes two maximum constant boost control methods for the Z-source inverter to modulation index is analyzed in detail and verified by simulation and experiment. Keywords- Z-source inverter

Tolbert, Leon M.

128

A thermal distribution function for relativistic magnetically insulated electron flows  

SciTech Connect (OSTI)

A distribution function is presented that may be used to study the effects of finite temperature on the equilibrium and stability properties of magnetically insulated electron flows. This distribution function has the useful property that it generates the thoroughly studied class of constant Q = ..omega../sup 2//sub p//..cap omega../sup 2/ equilibria in its zero-temperature limit. Analytic solutions are given for the general, constant Q, zero-temperature equilibria.

Desjarlais, M.P.; Sudan, R.N.

1986-05-01T23:59:59.000Z

129

A thermal distribution function for relativistic magnetically insulated electron flows  

Science Journals Connector (OSTI)

A distribution function is presented that may be used to study the effects of finite temperature on the equilibrium and stability properties of magnetically insulated electron flows. This distribution function has the useful property that it generates the thoroughly studied class of constant Q=?2 p /?2 equilibria in its zero?temperature limit. Analytic solutions are given for the general constant Q zero?temperature equilibria.

M. P. Desjarlais; R. N. Sudan

1986-01-01T23:59:59.000Z

130

Advances in theoretical and physical aspects of spin-spin coupling constants  

Science Journals Connector (OSTI)

Publisher Summary This chapter describes trends of coupling constants on the basis of the concepts commonly used by chemists in the laboratory. With the discovery of nuclear magnetic resonance, four impressive progresses have taken place, both in experimental techniques and in theoretical approaches aimed at understanding the electronic origin of high-resolution nuclear magnetic resonance parameters. The chapter describes the calculation and analysis of spinspin coupling constants. Intra- and inter-molecular interaction effects on spinspin coupling constants have also been presented. Ab initio calculations of couplings in small molecules with large basis sets and inclusion of electron correlation effects have reached almost quantitative accuracy. Different types of couplings in different molecular environments have very different computational demands to obtain such accuracy. The use density functional theory (DFT)-based methods for chemical applications have increased exponentially in the past decade and the finite perturbation theory (FPT) approach to calculating the Fermi contact (FC) contribution to different couplings employing a variety of functionals has produced quite promising results. Progress in different experimental techniques helped determine relative signs of coupling constants, which in many cases are now determined routinely. This additional information is a significant improvement in using experimental values to obtain insights into different aspects of molecular electronic structure.

Rubn H. Contreras; Juan E. Peralta; Claudia G. Giribet; Martn C. Ruiz de aza; Julio C. Facelli

2000-01-01T23:59:59.000Z

131

Methodology for extracting local constants from petroleum cracking flows  

DOE Patents [OSTI]

A methodology provides for the extraction of local chemical kinetic model constants for use in a reacting flow computational fluid dynamics (CFD) computer code with chemical kinetic computations to optimize the operating conditions or design of the system, including retrofit design improvements to existing systems. The coupled CFD and kinetic computer code are used in combination with data obtained from a matrix of experimental tests to extract the kinetic constants. Local fluid dynamic effects are implicitly included in the extracted local kinetic constants for each particular application system to which the methodology is applied. The extracted local kinetic model constants work well over a fairly broad range of operating conditions for specific and complex reaction sets in specific and complex reactor systems. While disclosed in terms of use in a Fluid Catalytic Cracking (FCC) riser, the inventive methodology has application in virtually any reaction set to extract constants for any particular application and reaction set formulation. The methodology includes the step of: (1) selecting the test data sets for various conditions; (2) establishing the general trend of the parametric effect on the measured product yields; (3) calculating product yields for the selected test conditions using coupled computational fluid dynamics and chemical kinetics; (4) adjusting the local kinetic constants to match calculated product yields with experimental data; and (5) validating the determined set of local kinetic constants by comparing the calculated results with experimental data from additional test runs at different operating conditions.

Chang, Shen-Lin (Woodridge, IL); Lottes, Steven A. (Naperville, IL); Zhou, Chenn Q. (Munster, IN)

2000-01-01T23:59:59.000Z

132

Type: Renewal  

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

1 INCITE Awards 1 INCITE Awards Type: Renewal Title: -Ab Initio Dynamical Simulations for the Prediction of Bulk Properties‖ Principal Investigator: Theresa Windus, Iowa State University Co-Investigators: Brett Bode, Iowa State University Graham Fletcher, Argonne National Laboratory Mark Gordon, Iowa State University Monica Lamm, Iowa State University Michael Schmidt, Iowa State University Scientific Discipline: Chemistry: Physical INCITE Allocation: 10,000,000 processor hours Site: Argonne National Laboratory Machine (Allocation): IBM Blue Gene/P (10,000,000 processor hours) Research Summary: This project uses high-quality electronic structure theory, statistical mechanical methods, and

133

IPCC Data Distribution Centre | Open Energy Information  

Open Energy Info (EERE)

IPCC Data Distribution Centre IPCC Data Distribution Centre Jump to: navigation, search Tool Summary Name: IPCC Data Distribution Centre Agency/Company /Organization: World Meteorological Organization, United Nations Environment Programme Sector: Energy, Land Topics: Baseline projection, GHG inventory, Co-benefits assessment, - Energy Access, - Environmental and Biodiversity, Pathways analysis Resource Type: Dataset Website: www.ipcc-data.org/ References: IPCC Data Distribution Centre [1] " The DDC provides climate, socio-economic and environmental data, both from the past and also in scenarios projected into the future. Technical guidelines on the selection and use of different types of data and scenarios in research and assessment are also provided." References ↑ "IPCC Data Distribution Centre"

134

Open Inflation, the Four Form and the Cosmological Constant  

E-Print Network [OSTI]

Fundamental theories of quantum gravity such as supergravity include a four form field strength which contributes to the cosmological constant. The inclusion of such a field into our theory of open inflation (hep-th/9802030) allows an anthropic solution to the cosmological constant problem in which the cosmological constant gives a small but non-negligible contribution to the density of today's universe. We include a discussion of the role of the singularity in our solution and a reply to Vilenkin's recent criticism (hep-th/9803084).

Neil Turok; S. W. Hawking

1998-03-19T23:59:59.000Z

135

Bacteria Types  

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

Bacteria Types Bacteria Types Name: Evelyn Location: N/A Country: N/A Date: N/A Question: What is the significance of S. marcescens,M.luteus, S.epidermidis, and E. Coli? Which of these are gram-positive and gram-negative, and where can these be found? Also, what problems can they cause? When we culture these bacteria, we used four methods: plates, broth, slants, and pour plates. The media was made of TSB, TSA, NAP, and NAD. What is significant about these culturing methods? Replies: I could give you the answer to that question but it is more informative, and fun, to find out yourself. Start with the NCBI library online (http://www.ncbi.nlm.nih.gov/) and do a query with the species name, and 'virulence' if you want to know what they're doing to us. Have a look at the taxonomy devision to see how they are related. To find out if they're gram-pos or neg you should do a gram stain if you can. Otherwise you'll find that information in any bacteriology determination guide. Your question about the media is not specific enough so I can't answer it.

136

High Temperature, Large Sample Volume, Constant Flow Magic Angle Spinning NMR Probe for a 11  

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

High Temperature, Large Sample Volume, Constant Flow Magic Angle Spinning NMR Probe for a High Temperature, Large Sample Volume, Constant Flow Magic Angle Spinning NMR Probe for a 11.7 T Magnetic Field for In Situ Catalytic Reaction Characterization Project start date: April 1, 2007 EMSL Lead Investigator: Joseph Ford, EMSL High Field Magnetic Resonance Facility Co-investigators: Jian Zhi Hu, Macromolecular Structure and Dynamics, Biological Science Division, FCSD Jesse Sears and David W. Hoyt, EMSL High Field Magnetic Resonance Facility Detailed understanding of the mechanisms involved in a catalytic reaction requires identification of the nature of the active sites and the temporal evolution of reaction intermediates. Although optical methods such as UV-visible and infrared (IR) spectroscopies can be used for some types of reactions, these do not

137

Facility Type!  

Office of Legacy Management (LM)

ITY: ITY: --&L~ ----------- srct-r~ -----------~------~------- if yee, date contacted ------------- cl Facility Type! i I 0 Theoretical Studies Cl Sample 84 Analysis ] Production 1 Diepasal/Storage 'YPE OF CONTRACT .--------------- 1 Prime J Subcontract&- 1 Purchase Order rl i '1 ! Other information (i.e., ---------~---~--~-------- :ontrait/Pirchaee Order # , I C -qXlJ- --~-------~~-------~~~~~~ I I ~~~---~~~~~~~T~~~ FONTRACTING PERIODi IWNERSHIP: ,I 1 AECIMED AECMED GOVT GOUT &NTtiAC+OR GUN-I OWNED ----- LEEE!? M!s LE!Ps2 -LdJG?- ---L .ANDS ILJILDINGS X2UIPilENT IRE OR RAW HA-I-L :INAL PRODUCT IASTE Z. RESIDUE I I kility l pt I ,-- 7- ,+- &!d,, ' IN&"E~:EW AT SITE -' ---------------- , . Control 0 AEC/tlED managed operations

138

Giant Dielectric Constant Controlled by Maxwell-Wagner Dielectric  

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

Giant Dielectric Constant Controlled Giant Dielectric Constant Controlled by Maxwell-Wagner Dielectric Relaxation in Al2O3/TiO2 Nanolaminates Synthesized by Atomic Layer Deposition Giant Dielectric Constant Controlled by Maxwell-Wagner Dielectric Relaxation in Al2O3/TiO2 Nanolaminates Synthesized by Atomic Layer Deposition Nanolaminate consisting of Al2O3 and TiO2 oxide sublayers were synthesized, using atomic layer deposition (ALD) to produce individual layers with atomic scale control. The main goal of this work is to produce robust high dielectric constant layers based on biocompatible materials, such as Al2O3 and TiO2, suitable to fabricate high-capacitance capacitors for microchip embedded energy storage capacitor for implantable biomedical devices. However, these capacitors based on Al2O3/TiO2 nanolaminates can provide

139

Fundamental constants and cosmic vacuum: the micro and macro connection  

E-Print Network [OSTI]

The idea that the vacuum energy density $\\rho_{\\Lambda}$ could be time dependent is a most reasonable one in the expanding Universe; in fact, much more reasonable than just a rigid cosmological constant for the entire cosmic history. Being $\\rho_{\\Lambda}=\\rho_{\\Lambda}(t)$ dynamical, it offers a possibility to tackle the cosmological constant problem in its various facets. Furthermore, for a long time (most prominently since Dirac's first proposal on a time variable gravitational coupling) the possibility that the fundamental "constants" of Nature are slowly drifting with the cosmic expansion has been continuously investigated. In the last two decades, and specially in recent times, mounting experimental evidence attests that this could be the case. In this paper, we consider the possibility that these two groups of facts might be intimately connected, namely that the observed acceleration of the Universe and the possible time variation of the fundamental constants are two manifestations of the same underlyi...

Fritzsch, Harald

2015-01-01T23:59:59.000Z

140

Colliding Impulsive Gravitational Waves and a Cosmological Constant  

E-Print Network [OSTI]

We present a space--time model of the collision of two homogeneous, plane impulsive gravitational waves (each having a delta function profile) propagating in a vacuum before collision and for which the post collision space--time has constant curvature. The profiles of the incoming waves are $k\\,\\delta(u)$ and $l\\,\\delta(v)$ where $k, l$ are real constants and $u=0, v=0$ are intersecting null hypersurfaces. The cosmological constant $\\Lambda$ in the post collision region of the space--time is given by $\\Lambda=-6\\,k\\,l$. In this sense this model collision provides a mechanism for generating a cosmological constant and therefore may be relevant to the theoretical description of dark energy.

Barrabs, C

2015-01-01T23:59:59.000Z

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141

Condensates in quantum chromodynamics and the cosmological constant  

Science Journals Connector (OSTI)

...where mesons are treated as elementary fields and QCD in which...substance, namely, (i) zero-resistance flow of electric current, and...proton subjected to a constant electric field will accelerate and...

Stanley J. Brodsky; Robert Shrock

2011-01-01T23:59:59.000Z

142

Phenomenology of infrared finite gluon propagator and coupling constant  

E-Print Network [OSTI]

We report on some recent solutions of the Dyson-Schwinger equations for the infrared behavior of the gluon propagator and coupling constant, discussing their differences and proposing that these different behaviors can be tested through hadronic phenomenology. We discuss which kind of phenomenological tests can be applied to the gluon propagator and coupling constant, how sensitive they are to the infrared region of momenta and what specific solution is preferred by the experimental data.

A. A. Natale

2006-10-23T23:59:59.000Z

143

The eta decay constant in `resummed' chiral perturbation theory  

E-Print Network [OSTI]

The recently developed 'Resummed' ChPT is illustrated on the case of pseudoscalar meson decay constants. We try to get an estimate of the eta decay constant, which is not well known from experiments, while using several ways including the Generalized ChPT Lagrangian to gather information beyond Standard next-to-leading order. We compare the results to published ChPT predictions, our own Standard ChPT calculations and available phenomenological estimates.

M. Kolesar; J. Novotny

2008-02-08T23:59:59.000Z

144

Conformal Supersymmetry Breaking and Dynamical Tuningof the Cosmological Constant  

SciTech Connect (OSTI)

We propose 'conformal supersymmetry breaking' models, which tightly relate the conformal breaking scale (i.e. R-symmetry breaking scale) and the supersymmetry breaking scale. The both scales are originated from the constant term in the superpotential through the common source of the R-symmetry breaking. We show that dynamical tuning between those mass scales significantly reduces the degree of fine-tuning necessary for generating the almost vanishing cosmological constant.

Ibe, M.; /SLAC; Nakayama, Y.; /UC, Berkeley; Yanagida, T.T.; /Tokyo U.

2008-03-07T23:59:59.000Z

145

DISTRIBUTION CATEGORY  

Office of Scientific and Technical Information (OSTI)

DISTRIBUTION CATEGORY DISTRIBUTION CATEGORY uc-11 I A W E N C E LIVERMORE IABORATORY University of Cahfmia/Livermore, California/94550 UCRL-52658 CALCULATION OF CHEMICAL EQUILIBRIUM BETWEEN AQUEOUS SOLUTION AND MINERALS: THE EQ3/6 - - SOFTWARE PACKAGE T. J. Wolery MS. date: February 1, 1979 . . - . . - . Tho rcpon rn prepared as an account of work sponsored by the United Stater Government. Seither Lhc Urutcd Stater nor the Umted Stater Department of Energy, nor any of their employees. nor any of their E O ~ ~ ~ B C I O I S . rubcontracton. o r their employees. makes any warranr)., exprcs or !mplwd. or assumes any legal liability or respanability io: the ~ c c u o c y . complctencn or uvfulneu of any miormarlon. apparatcr. product or p r o m s dtwlorcd. or r c p r e v n u that its UP would not infringe privately owned r

146

Performance of thermal distribution systems in large commercial buildings  

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

Performance of thermal distribution systems in large commercial buildings Performance of thermal distribution systems in large commercial buildings Title Performance of thermal distribution systems in large commercial buildings Publication Type Journal Article LBNL Report Number LBNL-44331 Year of Publication 2002 Authors Xu, Tengfang T., François Rémi Carrié, Darryl J. Dickerhoff, William J. Fisk, Jennifer A. McWilliams, Duo Wang, and Mark P. Modera Journal Energy and Buildings Volume 34 Start Page Chapter Pagination 215-226 Abstract This paper presents major findings of a field study on the performance of five thermal distribution systems in four large commercial buildings. The five systems studied are typical single-duct or dual-duct constant air volume (CAV) systems and variable air volume (VAV) systems, each of which serves an office building or a retail building with floor area over 2,000 m2. The air leakage from ducts are reported in terms of effective leakage area (ELA) at 25 Pa reference pressure, the ASHRAE-defined duct leakage class, and air leakage ratios. The specific ELAs ranged from 0.7 to 12.9 cm2 per m2 of duct surface area, and from 0.1 to 7.7 cm2 per square meter of floor area served. The leakage classes ranged from 34 to 757 for the five systems and systems sections tested. The air leakage ratios are estimated to be up to one-third of the fan- supplied airflow in the constant-air-volume systems. The specific ELAs and leakage classes indicate that air leakage in large commercial duct systems varies significantly from system to system, and from system section to system section even within the same thermal distribution system. The duct systems measured are much leakier than the ductwork specified as "unsealed ducts" by ASHRAE. Energy losses from supply ducts by conduction (including convection and radiation) are found to be significant, on the scale similar to the losses induced by air leakage in the duct systems. The energy losses induced by leakage and conduction suggest that there are significant energy-savings potentials from duct-sealing and insulation practice in large commercial buildings

147

Percent Distribution  

Gasoline and Diesel Fuel Update (EIA)

. . Percent Distribution of Natural Gas Supply and Disposition by State, 1996 Table State Estimated Proved Reserves (dry) Marketed Production Total Consumption Alabama................................................................... 3.02 2.69 1.48 Alaska ...................................................................... 5.58 2.43 2.04 Arizona..................................................................... NA 0 0.55 Arkansas.................................................................. 0.88 1.12 1.23 California.................................................................. 1.25 1.45 8.23 Colorado .................................................................. 4.63 2.90 1.40 Connecticut.............................................................. 0 0 0.58 D.C...........................................................................

148

Distributed Generation  

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

Untapped Value of Backup Generation Untapped Value of Backup Generation While new guidelines and regulations such as IEEE (Institute of Electrical and Electronics Engineers) 1547 have come a long way in addressing interconnection standards for distributed generation, utilities have largely overlooked the untapped potential of these resources. Under certain conditions, these units (primarily backup generators) represent a significant source of power that can deliver utility services at lower costs than traditional centralized solutions. These backup generators exist today in large numbers and provide utilities with another option to reduce peak load, relieve transmission congestion, and improve power reliability. Backup generation is widely deployed across the United States. Carnegie Mellon's Electricity

149

Constant residual electrostatic electron plasma mode in Vlasov-Ampere system  

SciTech Connect (OSTI)

In a collisionless Vlasov-Poisson (V-P) electron plasma system, two types of modes for electric field perturbation exist: the exponentially Landau damped electron plasma waves and the initial-value sensitive ballistic modes. Here, the V-P system is modified slightly to a Vlasov-Ampere (V-A) system. A new constant residual mode is revealed. Mathematically, this mode comes from the Laplace transform of an initial electric field perturbation, and physically represents that an initial perturbation (e.g., external electric field perturbation) would not be damped away. Thus, this residual mode is more difficult to be damped than the ballistic mode.

Xie, Hua-sheng [Institute for Fusion Theory and Simulation, Department of Physics, Zhejiang University, Hangzhou 310027 (China)] [Institute for Fusion Theory and Simulation, Department of Physics, Zhejiang University, Hangzhou 310027 (China)

2013-11-15T23:59:59.000Z

150

THE CENTRAL DARK MATTER DISTRIBUTION OF NGC 2976  

SciTech Connect (OSTI)

We study the mass distribution in the late-type dwarf galaxy NGC 2976 through stellar kinematics obtained with the Visible Integral Field Replicable Unit Spectrograph Prototype and anisotropic Jeans models as a test of cosmological simulations and baryonic processes that putatively alter small-scale structure. Previous measurements of the H{alpha} emission-line kinematics have determined that the dark matter halo of NGC 2976 is most consistent with a cored density profile. We find that the stellar kinematics are best fit with a cuspy halo. Cored dark matter halo fits are only consistent with the stellar kinematics if the stellar mass-to-light ratio is significantly larger than that derived from stellar population synthesis, while the best-fitting cuspy model has no such conflict. The inferred mass distribution from a harmonic decomposition of the gaseous kinematics is inconsistent with that of the stellar kinematics. This difference is likely due to the gas disk not meeting the assumptions that underlie the analysis such as no pressure support, a constant kinematic axis, and planar orbits. By relaxing some of these assumptions, in particular the form of the kinematic axis with radius, the gas-derived solution can be made consistent with the stellar kinematic models. A strong kinematic twist in the gas of NGC 2976's center suggests caution, and we advance the mass model based on the stellar kinematics as more reliable. The analysis of this first galaxy shows promising evidence that dark matter halos in late-type dwarfs may in fact be more consistent with cuspy dark matter distributions than earlier work has claimed.

Adams, Joshua J.; Gebhardt, Karl; Blanc, Guillermo A.; Murphy, Jeremy D. [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712 (United States); Fabricius, Maximilian H. [Max-Planck Institut fuer extraterrestrische Physik, Giessenbachstrasse, D-85741 Garching bei Muenchen (Germany); Hill, Gary J. [Texas Cosmology Center, University of Texas at Austin, 1 University Station C1400, Austin, TX 78712 (United States); Van den Bosch, Remco C. E. [McDonald Observatory, University of Texas at Austin, 1 University Station C1402, Austin, TX 78712 (United States); Van de Ven, Glenn [Max-Planck Institut fuer Astronomie, Koenigstuhl 17, 69117 Heidelberg (Germany)

2012-01-20T23:59:59.000Z

151

Gravitation, the 'Dark Matter' Effect and the Fine Structure Constant  

E-Print Network [OSTI]

Gravitational anomalies such as the mine/borehole g anomaly, the near-flatness of the spiral galaxy rotation-velocity curves, currently interpreted as a `dark matter' effect, the absence of that effect in ordinary elliptical galaxies, and the ongoing problems in accurately determining Newton's gravitational constant G_N are explained by a generalisation of the Newtonian theory of gravity to a fluid-flow formalism with one new dimensionless constant. By analysing the borehole data this constant is shown to be the fine structure constant alpha=1/137. The spiral galaxy `dark matter' effect and the globular cluster `black hole' masses are then correctly predicted. This formalism also explains the cause of the long-standing uncertainties in G_N and leads to the introduction of a fundamental gravitational constant G not = G_N with value G=(6.6526 +/- 0.013)x 10^-11 m^3s^{-2}kg^{-1}. The occurrence of alpha implies that space has a quantum structure, and we have the first evidence of quantum gravity effects.

Reginald T. Cahill

2005-04-07T23:59:59.000Z

152

Spin-rotation and NMR shielding constants in HCl  

SciTech Connect (OSTI)

The spin-rotation and nuclear magnetic shielding constants are analysed for both nuclei in the HCl molecule. Nonrelativistic ab initio calculations at the CCSD(T) level of approximation show that it is essential to include relativistic effects to obtain spin-rotation constants consistent with accurate experimental data. Our best estimates for the spin-rotation constants of {sup 1}H{sup 35}Cl are C{sub Cl} = ?53.914kHz and C{sub H} = 42.672kHz (for the lowest rovibrational level). For the chlorine shielding constant, the ab initio value computed including the relativistic corrections, ?(Cl) = 976.202ppm, provides a new absolute shielding scale; for hydrogen we find ?(H) = 31.403ppm (both at 300K). Combining the theoretical results with our new gas-phase NMR experimental data allows us to improve the accuracy of the magnetic dipole moments of both chlorine isotopes. For the hydrogen shielding constant, including relativistic effects yields better agreement between experimental and computed values.

Jaszu?ski, Micha?, E-mail: michal.jaszunski@icho.edu.pl [Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warszawa, Kasprzaka 44 (Poland)] [Institute of Organic Chemistry, Polish Academy of Sciences, 01-224 Warszawa, Kasprzaka 44 (Poland); Repisky, Michal; Demissie, Taye B.; Komorovsky, Stanislav; Malkin, Elena; Ruud, Kenneth [Centre for Theoretical and Computational Chemistry, University of TromsThe Arctic University of Norway, N-9037 Troms (Norway)] [Centre for Theoretical and Computational Chemistry, University of TromsThe Arctic University of Norway, N-9037 Troms (Norway); Garbacz, Piotr; Jackowski, Karol; Makulski, W?odzimierz [Laboratory of NMR Spectroscopy, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw (Poland)] [Laboratory of NMR Spectroscopy, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw (Poland)

2013-12-21T23:59:59.000Z

153

Intrusion Detection in the Large: Distributed Detection of Distributed Attacks  

E-Print Network [OSTI]

Communicate CMAD IV (Monterey, 1996) Coniidentiality/Sanitize Security Feedback to cracker Under Phased Response - Are there dependable cues n Distributed Attack in small Cluster of Computers - Limit components CMAD IV (Monterey, 1996) Doug Moran, SRI International n Single Platform Type #12;Scaling-Up 4

California at Davis, University of

154

In situ Measurement of Robot Motor Electrical Constants  

E-Print Network [OSTI]

Motor torque constant is an important parameter in modeling and controlling a robot axis. In practice this parameter can vary considerably from the manufacturer's specification, if available, and this makes it desirable to characterise individual motors. Traditional techniques require that the motor be removed from the robot for testing, or that an elaborate technique involving weights and pulleys be employed. This paper describes a novel method for measuring the torque constant of robot servo motors in situ and is based on the equivalence of motor torque and back EMF constants. It requires a very simple experimental procedure, utilizes existing axis position sensors, and eliminates effects due to static friction and joint cross coupling. A straightforward extension to this approach can provide a measurement of motor armature impedance. Experimental results obtained for a Puma 560 are discussed and compared with other published results. 1 Introduction A large number of existing robot m...

Peter I. Corke

1996-01-01T23:59:59.000Z

155

The Expansion of the Universe and the Cosmological Constant Problem  

E-Print Network [OSTI]

The discovery that the expansion of the universe is accelerating in time is a major discovery which still awaits adequate explanation. It is generally agreed that this implies a cosmic repulsion as a result of the existence of a cosmological constant . However, estimates of the cosmological constant, based on calculations of the zero-point fluctuations of quantum fields are too large by over a hundred orders of magnitude. This result is obtained by summing the zero-point energies up to a large cutoff energy, based on the Planck scale. Since there is no compelling reason for this choice, we argue that since all known quantum electrodynamic (QED) effects involves interaction with matter, a preferred choice should be based on causality and other considerations, leading to a much lower value for the cosmological constant .

O'Connell, R F

2007-01-01T23:59:59.000Z

156

Regular Black Hole Metric with Three Constants of Motion  

E-Print Network [OSTI]

According to the no-hair theorem, astrophysical black holes are uniquely characterized by their masses and spins and are described by the Kerr metric. Several parametric spacetimes which deviate from the Kerr metric have been proposed in order to test this theorem with observations of black holes in both the electromagnetic and gravitational-wave spectra. Such metrics often contain naked singularities or closed timelike curves in the vicinity of the compact objects that can limit the applicability of the metrics to compact objects that do not spin rapidly, and generally admit only two constants of motion. The existence of a third constant, however, can facilitate the calculation of observables, because the equations of motion can be written in first-order form. In this paper, I design a Kerr-like black hole metric which is regular everywhere outside of the event horizon, possesses three independent constants of motion, and depends nonlinearly on four free functions that parameterize potential deviations from ...

Johannsen, Tim

2015-01-01T23:59:59.000Z

157

Percent Distribution  

Gasoline and Diesel Fuel Update (EIA)

. . Percent Distribution of Natural Gas Delivered to Consumers by State, 1996 Table State Residential Commercial Industrial Vehicle Fuel Electric Utilities Alabama..................................... 1.08 0.92 2.27 0.08 0.23 Alaska ........................................ 0.31 0.87 0.85 - 1.16 Arizona....................................... 0.53 0.92 0.30 3.91 0.70 Arkansas.................................... 0.88 0.98 1.59 0.11 1.24 California.................................... 9.03 7.44 7.82 43.11 11.64 Colorado .................................... 2.12 2.18 0.94 0.58 0.20 Connecticut................................ 0.84 1.26 0.37 1.08 0.38 D.C............................................. 0.33 0.52 - 0.21 - Delaware.................................... 0.19 0.21 0.16 0.04 0.86 Florida........................................

158

Distribution Category:  

Office of Legacy Management (LM)

- - Distribution Category: Remedial Action and Decommissioning Program (UC-70A) DOE/EV-0005/48 ANL-OHS/HP-84-104 ARGONNE NATIONAL LABORATORY 9700 South Cass Avenue Argonne, Illinois 60439 FORMERLY UTILIZED MXD/AEC SITES REMEDIAL ACTION PROGRAM RADIOLOGICAL SURVEY OF THE HARSHAW CHEMICAL COMPANY CLEVELAND. OHIO Prepared by R. A. Wynveen Associate Division Director, OHS W. H. Smith Senior Health Physicist C. M. Sholeen Health Physicist A. L. Justus Health Physicist K. F. Flynn Health Physicist Radiological Survey Group Health Physics Section Occupational Health and Safety Division April 1984 Work Performed under Budget Activity DOE KN-03-60-40 and ANL 73706 iii PREFACE AND EXECUTIVE SUMMARY This is one in a series of reports resulting from a program initiated

159

Early universe constraints on time variation of fundamental constants  

SciTech Connect (OSTI)

We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, cosmic microwave background, and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant {alpha} and the Higgs vacuum expectation value without assuming any theoretical framework. A variation in leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of {alpha} and the electron mass m{sub e}. In a purely phenomenological fashion, we derive a relationship between both variations.

Landau, Susana J.; Mosquera, Mercedes E.; Scoccola, Claudia G.; Vucetich, Hector [Departamento de Fisica, FCEyN, Universidad de Buenos Aires, Ciudad Universitaria-Pabellon 1, 1428 Buenos Aires (Argentina); Facultad de Ciencias Astronomicas y Geofisicas. Universidad Nacional de La Plata, Paseo del Bosque S/N 1900 La Plata (Argentina); Facultad de Ciencias Astronomicas y Geofisicas. Universidad Nacional de La Plata, Paseo del Bosque S/N 1900 La Plata (Argentina); and Instituto de Astrofisica, Paseo del Bosque S/N 1900 La Plata (Argentina); Facultad de Ciencias Astronomicas y Geofisicas. Universidad Nacional de La Plata, Paseo del Bosque S/N 1900 La Plata (Argentina)

2008-10-15T23:59:59.000Z

160

Cosmological Evolution of Fundamental Constants: From Theory to Experiment  

E-Print Network [OSTI]

In this paper we discuss a possible cosmological time evolution of fundamental constants from the theoretical and experimental point of views. On the theoretical side, we explain that such a cosmological time evolution is actually something very natural which can be described by mechanisms similar to those used to explain cosmic inflation. We then discuss implications for grand unified theories, showing that the unification condition of the gauge coupling could evolve with cosmological time. Measurements of the electron-to-proton mass ratio can test grand unified theories using low energy data. Following the theoretical discussion, we review the current status of precision measurements of fundamental constants and their potential cosmological time dependence.

Xavier Calmet; Matthias Keller

2014-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Meson masses and decay constants from unquenched lattice QCD  

SciTech Connect (OSTI)

We report results for the masses of the flavor nonsinglet light 0{sup ++}, 1{sup --}, and 1{sup +-} mesons from unquenched lattice QCD at two lattice spacings. The twisted mass formalism was used with two flavors of sea quarks. For the 0{sup ++} and 1{sup +-} mesons we look for the effect of decays on the mass dependence. For the light vector mesons we study the chiral extrapolations of the mass. We report results for the leptonic and transverse decay constants of the {rho} meson. We test the mass dependence of the KSRF relations, between the mass, leptonic coupling constant, and strong coupling of the rho meson.

Jansen, K. [DESY, Zeuthen, Platanenallee 6, D-15738 Zeuthen (Germany); McNeile, C. [Department of Physics and Astronomy, Kelvin Building, University of Glasgow, Glasgow, G12 8QQ (United Kingdom); Michael, C. [Theoretical Physics Division, Department of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX (United Kingdom); Urbach, C. [Humboldt-Universitaet zu Berlin, Institut fuer Physik Mathematisch-Naturwissenschaftliche Fakultaet I, Theorie der Elementarteilchen/Phaenomenologie, Newtonstrasse 15, 12489 Berlin (Germany)

2009-09-01T23:59:59.000Z

162

A Modified FRW Metric to Explain the Cosmological Constant  

E-Print Network [OSTI]

One of the most outstanding problems of the standard model of cosmology today is the problem of cosmological constant/dark energy. It corresponds to about 73 per cent of the energy content of the universe gone missing. I hereby postulate a modified FRW metric for our universe, which animates a universe spinning rigidly but very slowly with an angular frequency that is equal to the Hubble constant. It is shown by a simple argument that in such a universe there will be an overlooked rotational energy whose average value is identically equal to the matter-energy content of this universe as observed by a coordinate observer.

Serkan Zorba

2012-10-02T23:59:59.000Z

163

The Quantum Vacuum and the Cosmological Constant Problem  

E-Print Network [OSTI]

The cosmological constant problem arises at the intersection between general relativity and quantum field theory, and is regarded as a fundamental problem in modern physics. In this paper we describe the historical and conceptual origin of the cosmological constant problem which is intimately connected to the vacuum concept in quantum field theory. We critically discuss how the problem rests on the notion of physical real vacuum energy, and which relations between general relativity and quantum field theory are assumed in order to make the problem well-defined.

Svend Erik Rugh; Henrik Zinkernagel

2000-12-28T23:59:59.000Z

164

The Quantum Vacuum and the Cosmological Constant Problem  

E-Print Network [OSTI]

The cosmological constant problem arises at the intersection between general relativity and quantum field theory, and is regarded as a fundamental problem in modern physics. In this paper we describe the historical and conceptual origin of the cosmological constant problem which is intimately connected to the vacuum concept in quantum field theory. We critically discuss how the problem rests on the notion of physical real vacuum energy, and which relations between general relativity and quantum field theory are assumed in order to make the problem well-defined.

Rugh, S E; Rugh, Svend Erik; Zinkernagel, Henrik

2000-01-01T23:59:59.000Z

165

Electromagnetic low-energy constants in ChPT  

E-Print Network [OSTI]

We investigate three-flavour chiral perturbation theory including virtual photons in a limit where the strange quark mass is much larger than the external momenta and the up and down quark masses, and where the external fields are those of two-flavour chiral perturbation theory. In particular we work out the strange quark mass dependence of the electromagnetic two-flavour low-energy constants C and k_i. We expect that these relations will be useful for a more precise determination of the electromagnetic low-energy constants.

Christoph Haefeli; Mikhail A. Ivanov; Martin Schmid

2007-10-29T23:59:59.000Z

166

Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax  

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

Distribution Distribution Infrastructure Tax Credit to someone by E-mail Share Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax Credit on Facebook Tweet about Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax Credit on Twitter Bookmark Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax Credit on Google Bookmark Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax Credit on Delicious Rank Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax Credit on Digg Find More places to share Alternative Fuels Data Center: Biofuels Distribution Infrastructure Tax Credit on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biofuels Distribution Infrastructure Tax Credit

167

Static charged distributions in 2+1 gravity  

SciTech Connect (OSTI)

Circularly symmetric charged perfect-fluid distributions are studied in three-dimensional gravity with a cosmological constant. We derive the Tolman-Oppenheimer-Volkoff equation of hydroelectrostatic equilibrium, and we discuss its applicability. A class of charged fluid distributions for p=-{rho} is considered. In this case, a particular model is obtained which represents a charged distribution whose mass is entirely of electromagnetic origin.

Cataldo, Mauricio; Cruz, Norman [Departamento de Fisica, Facultad de Ciencias, Universidad del Bio-Bio, Avenida Collao 1202, Casilla 5-C, Concepcion (Chile); Departamento de Fisica, Facultad de Ciencia, Universidad de Santiago, Casilla 307, Santiago (Chile)

2006-05-15T23:59:59.000Z

168

Money Smart Many families face the constant challenge of managing  

E-Print Network [OSTI]

Money Smart Relevance Many families face the constant challenge of managing limited resources correctly. Response Money Smart is a financial management program developed by the Federal Deposit Insurance knowledge, develop financial confidence, and use banking services effectively. For almost 10 years, Money

169

Hydrolysis and formation constants at 25/sup 0/C  

SciTech Connect (OSTI)

A database consisting of hydrolysis and formation constants for about 20 metals associated with the disposal of nuclear waste is given. Complexing ligands for the various ionic species of these metals include OH, F, Cl, SO/sub 4/, PO/sub 4/ and CO/sub 3/. Table 1 consists of tabulated calculated and experimental values of log K/sub xy/, mainly at 25/sup 0/C and various ionic strengths together with references to the origin of the data. Table 2 consists of a column of recommended stability constants at 25/sup 0/C and zero ionic strength tabulated in the column headed log K/sub xy/(0); other columns contain coefficients for an extended Debye-Huckel equation to permit calculations of stability constants up to 3 ionic strength, and up to 0.7 ionic strength using the Davies equation. Selected stability constants calculated with these coefficients for various ionic strengths agree to an average of +- 2% when compared with published experimental and calculated values.

Phillips, S.L.

1982-05-01T23:59:59.000Z

170

Note on bosonic open strings in a constant B field  

Science Journals Connector (OSTI)

We sketch the main steps of old covariant quantization of bosonic open strings in a constant B field background. We comment on its space-time symmetries and the induced effective metric. The low-energy spectrum is evaluated and the appearance of a new noncommutative gauge symmetry is addressed.

Ansar Fayyazuddin and Maxim Zabzine

2000-07-21T23:59:59.000Z

171

Codes of constant Lee or Euclidean weight Jay A. Wood  

E-Print Network [OSTI]

Codes of constant Lee or Euclidean weight Jay A. Wood Department of Mathematics, Computer Science & Statistics Purdue University Calumet Hammond, Indiana 46323--2094 USA wood@calumet.purdue.edu http://www.calumet.purdue.edu/public/math/wood Scholarly Research Awards. #12; JAY A. WOOD 1. Linear codes as modules Throughout this extended abstract

Wood, Jay

172

Determination of rate constants by the frequency response method  

SciTech Connect (OSTI)

A technique based upon transmission FTIR to obtain rate constants for adsorption and desorption over supported metal catalysts has been developed and tested. The technique requires the use of a sinusoidal perturbation function imposed on steady state linearized adsorption-desorption kinetics. The measurement of a phase lag between the sinusoidal inlet gas phase forcing concentration and the response of surface coverage, together with a measurement of the maximum amplitudes of the forcing function and surface response enable the calculation of the relevant adsorption and desorption rate constants. The technique has been successfully applied to the measurement of both adsorption and desorption rate constants for CO adsorbed on a 1% Pt/SiO/sub 2/ catalyst. The values obtained for these rate constants at 343 K were: K/sub a/ = 0.147 s/sup -1/ and K/sub d/ = 7.28 x 10/sup -3/ s/sup -1/. A sticking coefficient corresponding to the adsorption of weakly bonded CO on Pt under conditions of high CO surface coverage was obtained.

Li, Y.E.; Willcox, D.; Gonzalez, R.D.

1989-03-01T23:59:59.000Z

173

Studying variation of fundamental constants with molecules V. V. Flambaum  

E-Print Network [OSTI]

directly linked to experimentally measured atomic and molecular observables. Below we will show that huge, and Oklo natural nuclear reactor give us the space-time variation of constants on the Universe lifetime scale, i.e. on times from few bil- lion to more than ten billion years. Comparison of the frequencies

Titov, Anatoly

174

CODATA recommended values of the fundamental physical constants: 2010*  

E-Print Network [OSTI]

constants and conversion factors of physics and chemistry recommended by the Committee on Data for Science. Theory of hydrogen and deuterium energy levels 1534 a. Dirac eigenvalue 1534 b. Relativistic recoil 1534 c. Nuclear polarizability 1535 d. Self energy 1535 e. Vacuum polarization 1536 f. Two

175

The Cosmological Constant Problem Service de Physique Theorique  

E-Print Network [OSTI]

and radiation, the energy momentum tensor is diagonal and determined by the energy density measured in units of energy per unit volume and p the pressure. All energy scales will be measured in units where ¯h = c = 1's constant of gravitation. The Ricci tensor measures the curvature of space­time while the energy

Paris-Sud XI, Université de

176

Measurement of the cosmological constant P. Antilogus a  

E-Print Network [OSTI]

. The usage of SN Ia to probe the vacuum energy and more generally to study the dark energy seems quite, let us expect a break through in the understanding of the dark energy, energy at the source of the observed acceleration of the universe expansion. 2. From the cosmological constant to the dark energy

Paris-Sud XI, Université de

177

CODATA Recommended Values of the Fundamental Physical Constants: 1998*  

E-Print Network [OSTI]

and conversion factors of physics and chemistry recommended by the Committee on Data for Science and Technology Institute of Physics and American Chemical Society. S0047-2689 00 00301-9 Key words: CODATA, conversion factors, data analysis, electrical units, fundamental constants, Josephson effect, least

178

CAPUT DARK ENERGY TOPICS, 2013 1. The Cosmological Constant  

E-Print Network [OSTI]

waves rule Physics Today, april 2008, 44 - Colless M. The WiggleZ Dark Energy Survey KIAS workshop 2008 Redshift Surveys ApJ 633, 575 - Seo H-J, Eisenstein D.J., 2005 Probing Dark Energy with Baryonic AcousticCAPUT DARK ENERGY TOPICS, 2013 1 #12;1. The Cosmological Constant - The acceleration

Weijgaert, Rien van de

179

WRIGHT'S CONSTANTS IN GRAPH ENUMERATION AND BROWNIAN EXCURSION AREA  

E-Print Network [OSTI]

WRIGHT'S CONSTANTS IN GRAPH ENUMERATION AND BROWNIAN EXCURSION AREA SVANTE JANSON Abstract - 1) = n n-2 for every n # 1. Wright [19] proved that for any fixed k # -1, we have the analoguous) Note the equivalent recursion formula # k+1 = 3k + 2 2 # k + k # j=0 # j # k-j , k # -1. (4) Wright

Janson, Svante

180

WRIGHT'S CONSTANTS IN GRAPH ENUMERATION AND BROWNIAN EXCURSION AREA  

E-Print Network [OSTI]

WRIGHT'S CONSTANTS IN GRAPH ENUMERATION AND BROWNIAN EXCURSION AREA SVANTE JANSON Abstract n 1. Wright [19] proved that for any fixed k -1, we have the analoguous asymptotic formula C(n, n-j, k -1. (4) Wright gives in the later paper [20] the same result in the form k = 2(1-5k)/23k1/2(k - 1

Janson, Svante

Note: This page contains sample records for the topic "distribution type constant" 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

Mobile applications constantly demand additional memory, and traditional  

E-Print Network [OSTI]

. This remote access could reduce local storage space, thereby reducing energy demands on the mobile plat- form60 Mobile applications constantly demand additional memory, and traditional designs increase- port connected ubiquitous environments. Engineers attempt to minimize network use because of its

Lee, Hsien-Hsin "Sean"

182

Dynamic Resource Management for Adaptive Distributed Information Fusion in  

E-Print Network [OSTI]

Dynamic Resource Management for Adaptive Distributed Information Fusion in Large Volume for distributed information fusion to address large volume surveil- lance challenges, assuming a multitude of different sensor types on multi- ple mobile platforms for intelligence, surveillance and reconnaissance. Our

Zhang, Richard "Hao"

183

Distributed Energy Calculator | Open Energy Information  

Open Energy Info (EERE)

Distributed Energy Calculator Distributed Energy Calculator Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Distributed Energy Calculator Agency/Company /Organization: Apps for Energy Challenge Participant Sector: Energy Resource Type: Application prototype User Interface: Website Website: distributedenergycalculator.com/ OpenEI Keyword(s): Challenge Generated, Green Button Apps Language: English References: Apps for Energy[1] The Distributed Energy Calculator allows you to explore the potential energy savings for your community using Solar, Small Wind or Microturbines. The Distributed Energy Calculator allows you to explore the potential energy savings for your community using Solar, Small Wind or Microturbines. You can upload Green Button Data to compare your utility energy costs to

184

NAPTH: Neutronics analysis code system for the fusionfission hybrid reactor with pressure tube type blanket  

Science Journals Connector (OSTI)

The fusionfission hybrid reactor is considered as a potential path to the early application of fusion energy. A new concept with pressure tube type blanket has recently been proposed for a feasible hybrid reactor. In this paper, a code system for the neutronics analysis of the pressure tube type hybrid reactor is developed based on the two-step calculation scheme: the few-group homogeneous constant calculation and the full blanket calculation. The few-group homogeneous constants are calculated using the lattice code DRAGON4. The blanket transport calculation is performed by the multigroup Monte Carlo code. A link procedure for fitting the cross sections is developed between these two steps. An additional procedure is developed to calculate the burnup, power distribution, energy multiplication factor, tritium breeding ratio and neutron multiplication factor. From some numerical results, it is found that the code system NAPTH is reliable and exhibits good calculation efficiency. It can be used for the conceptual design of the pressure tube type hybrid reactor with precise geometry.

Tiejun Zu; Hongchun Wu; Youqi Zheng; Liangzhi Cao; Chao Yang

2013-01-01T23:59:59.000Z

185

Diffractive parton distributions from H1 data  

E-Print Network [OSTI]

We analyse the latest H1 large rapidity gap data to obtain diffractive parton distributions, using a procedure based on perturbative QCD, and compare them with distributions obtained from the simplified Regge factorisation type of analysis. The diffractive parton densities and structure functions are made publicly available.

Martin, A D; Watt, G

2007-01-01T23:59:59.000Z

186

Diffractive parton distributions from H1 data  

E-Print Network [OSTI]

We analyse the latest H1 large rapidity gap data to obtain diffractive parton distributions, using a procedure based on perturbative QCD, and compare them with distributions obtained from the simplified Regge factorisation type of analysis. The diffractive parton densities and structure functions are made publically available.

A. D. Martin; M. G. Ryskin; G. Watt

2006-09-26T23:59:59.000Z

187

Distributed Generation Study/Patterson Farms CHP System Using...  

Open Energy Info (EERE)

Biogas < Distributed Generation Study Jump to: navigation, search Study Location Auburn, New York Site Description Agricultural Study Type Field Test Technology Internal Combustion...

188

Bulk viscous FWR with time varying constants revisited  

E-Print Network [OSTI]

We study a full causal bulk viscous cosmological model with flat FRW symmetries and where the ``constants'' $G,c$ and $\\Lambda $ vary. We take into account the possible effects of a $c-$variable into the curvature tensor in order to outline the field equations. Using the Lie method we find the possible forms of the ``constants'' $G$ and $c$ that make integrable the field equations as well as the equation of state for the viscous parameter. It is found that $G,c$ and $\\Lambda $ follow a power law solution verifying the relationship $G/c^{2}=\\kappa .$ Once these possible forms have been obtained we calculate the thermodynamical quantities of the model in order to determine the possible values of the parameters that govern the quantities, finding that only a growing $G$ and $c$ are possible while $% \\Lambda $ behaves as a negative decreasing function.

J. A. Belinchn

2005-01-07T23:59:59.000Z

189

Mega-masers, Dark Energy and the Hubble Constant  

SciTech Connect (OSTI)

Powerful water maser emission (water mega-masers) can be found in accretion disks in the nuclei of some galaxies. Besides providing a measure of the mass at the nucleus, such mega-masers can be used to determine the distance to the host galaxy, based on a kinematic model. We will explain the importance of determining the Hubble Constant to high accuracy for constraining the equation of state of Dark Energy and describe the Mega-maser Cosmology Project that has the goal of determining the Hubble Constant to better than 3%. Time permitting, we will also present the scientific capabilities of the current and future NRAO facilities: ALMA, EVLA, VLBA and GBT, for addressing key astrophysical problems

Lo, Fred K. Y.

2007-10-15T23:59:59.000Z

190

Determination of Tafel constants in nonlinear polarization curves. Master's thesis  

SciTech Connect (OSTI)

The presence of nonlinear behavior in potentiodynamic polarization plots has resulted in difficulty in determining the Tafel constants from such plots. A FORTRAN-based program involving numerical-differentiation techniques was used to determine the existence of the Tafel regions. Various alloys polarized in synthetic seawater and a 3.5% NaCl solution were analyzed. Although severe concentration polarization often dominated the cathodic branches, the techniques employed did allow for the selection of regions that approached linear behavior. The effects of concentration polarization in hindering the determination of Tafel constants were exemplified by the uncovering of a cathodic branch containing a small region where only activation polarization dominated, followed by the onset and total domination of concentration polarization. A method of determining where the anodic and cathodic currents begin to dominate the potentiodynamic polarization curve is introduced.

O'Loughlin, T.E.

1987-12-01T23:59:59.000Z

191

Spectral gap and logarithmic Sobolev constant for continuous spin systems  

E-Print Network [OSTI]

The aim of this paper is to study the spectral gap and the logarithmic Sobolev constant for continuous spin systems. A simple but general result for estimating the spectral gap of finite dimensional systems is given by Theorem 1.1, in terms of the spectral gap for one-dimensional marginals. The study of the topic provides us a chance, and it is indeed another aim of the paper, to justify the power of the results obtained previously. The exact order in dimension one (Proposition 1.4), and then the precise leading order and the explicit positive regions of the spectral gap and the logarithmic Sobolev constant for two typical infinite-dimensional models are presented (Theorems 6.2 and 6.3). Since we are interested in explicit estimates, the computations become quite involved. A long section (Section 4) is devoted to the study of the spectral gap in dimension one.

Mu-Fa Chen

2010-04-26T23:59:59.000Z

192

The Speed of Light and the Fine Structure Constant  

E-Print Network [OSTI]

The fine structure constant $\\alpha $ includes the speed of light as given by $\\alpha =\\frac{e^{2}}{4\\pi \\epsilon_{0}c\\hbar}$. It is shown here that, following a $TH\\epsilon \\mu $ formalism, interpreting the permittivity $\\epsilon_{0}$ and permeabiliy $\\mu_{0}$ of free space under Lorentz local and position invariance, this is not the case. The result is a new expression as $\\alpha =\\frac{e^{2}}{4\\pi \\hbar}$ in a new system of units for the charge that preserves local and position invariance. Hence, the speed of light does not explicitly enter in the constitution of the fine structure constant. The new expressions for the Maxwell's equations are derived and some cosmological implications discussed.

Antonio Alfonso-Faus

2000-08-04T23:59:59.000Z

193

Adjoint-based method for supersonic aircraft design using equivalent area distributions  

E-Print Network [OSTI]

Adjoint-based method for supersonic aircraft design using equivalent area distributions Francisco for the design of supersonic aircraft that must match a target equivalent area distribution at constant lift of an adjoint solver for the equivalent area distribution, and the shape design process of a trijet supersonic

Alonso, Juan J.

194

Apparatus producing constant cable tension for intermittent demand  

DOE Patents [OSTI]

This invention relates to apparatus for producing constant tension in cable or the like when it is unreeled and reeled from a drum or spool under conditions of intermittent demand. The invention is particularly applicable to the handling of superconductive cable, but the invention is also applicable to the unreeling and reeling of other strands, such as electrical cable, wire, cord, other cables, fish line, wrapping paper and numerous other materials.

Lauritzen, T.

1984-05-23T23:59:59.000Z

195

Apparatus producing constant cable tension for intermittent demand  

DOE Patents [OSTI]

The disclosed apparatus produces constant tension in superconducting electrical cable, or some other strand, under conditions of intermittent demand, as the cable is unreeled from a reel or reeled thereon. The apparatus comprises a pivotally supported swing frame on which the reel is rotatably supported, a rotary motor, a drive train connected between the motor and the reel and including an electrically controllable variable torque slip clutch, a servo transducer connected to the swing frame for producing servo input signals corresponding to the position thereof, a servo control system connected between the transducer and the clutch for regulating the torque transmitted by the clutch to maintain the swing frame in a predetermined position, at least one air cylinder connected to the swing frame for counteracting the tension in the cable, and pressure regulating means for supplying a constant air pressure to the cylinder to establish the constant tension in the cable, the servo system and the clutch being effective to produce torque on the reel in an amount sufficient to provide tension in the cable corresponding to the constant force exerted by the air cylinder. The drive train also preferably includes a fail-safe brake operable to its released position by electrical power in common with the servo system, for preventing rotation of the reel if there is a power failure. A shock absorber and biasing springs may also be connected to the swing frame, such springs biasing the frame toward its predetermined position. The tension in the cable may be measured by force measuring devices engageable with the bearings for the reel shaft, such bearings being supported for slight lateral movement. The reel shaft is driven by a Shmidt coupler which accommodates such movement.

Lauritzen, Ted (Lafayette, CA)

1985-01-01T23:59:59.000Z

196

Perfect Fluid LRS Bianchi I with Time Varying Constants  

E-Print Network [OSTI]

It is investigated the behaviour of the ``constants'' $G,$ $c$ and $\\Lambda $ in the framework of a perfect fluid LRS Bianchi I cosmological model. It has been taken into account the effects of a $c-$variable into the curvature tensor. Two exact cosmological solutions are investigated, arriving to the conclusion that if $q<0$ (deceleration parameter) then $G,$ $c$ are growing functions on time $t$ while $\\Lambda $ is a negative decreasing function on time.

J. A. Belinchn

2004-10-30T23:59:59.000Z

197

Development of low dielectric constant alumina-based ceramics for microelectronic substrates  

SciTech Connect (OSTI)

The performance of high speed computers depends not only on IC chips, but also on the signal propagation speed between these chips. The signal propagation delay in a computer is determined by the dielectric constant of the substrate material to which the IC chips are attached. In this study, a ceramic substrate with a low dielectric constant (k {approx} 5.0) has been developed. When compared with the traditional alumina substrate (k {approx} 10.0), the new material corresponds to a 37% decrease in the signal propagation delay. Glass hollow spheres are used to introduce porosity (k = 1.0) to the alumina matrix in a controlled manner. A surface coating technique via heterogeneous nucleation in aqueous solution has been used to improve the high temperature stability of these spheres. After sintering at 1,400 C, isolated spherical pores are uniformly distributed in the almost fully dense alumina matrix; negligible amounts of matrix defects can be seen. All pores are isolated from each other. Detailed analyses of the chemical composition find that the sintered sample consists of {alpha}-alumina, mullite and residual glass. Mullite is the chemical reaction product of alumina and the glass spheres. Residual glass exists because current firing conditions do not complete the mullitization reaction. The dielectric constant of the sintered sample is measured and then compared with the predicted value using Maxwell`s model. Mechanical strength is evaluated by a four-point bending test. Although the flexural strength decreases exponentially with porosity, samples with 34% porosity (k {approx} 5.0) still maintain adequate mechanical strength for the proper operation of a microelectronic substrate.

Wu, S.J. [Lawrence Berkeley Lab., CA (United States). Materials Science Div.]|[California Univ., Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering

1993-05-01T23:59:59.000Z

198

Stars in other universes: stellar structure with different fundamental constants  

SciTech Connect (OSTI)

Motivated by the possible existence of other universes, with possible variations in the laws of physics, this paper explores the parameter space of fundamental constants that allows for the existence of stars. To make this problem tractable, we develop a semi-analytical stellar structure model that allows for physical understanding of these stars with unconventional parameters, as well as a means to survey the relevant parameter space. In this work, the most important quantities that determine stellar properties-and are allowed to vary-are the gravitational constant G, the fine structure constant {alpha} and a composite parameter C that determines nuclear reaction rates. Working within this model, we delineate the portion of parameter space that allows for the existence of stars. Our main finding is that a sizable fraction of the parameter space (roughly one-fourth) provides the values necessary for stellar objects to operate through sustained nuclear fusion. As a result, the set of parameters necessary to support stars are not particularly rare. In addition, we briefly consider the possibility that unconventional stars (e.g. black holes, dark matter stars) play the role filled by stars in our universe and constrain the allowed parameter space.

Adams, Fred C, E-mail: fca@umich.edu [Michigan Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, MI 48109 (United States)

2008-08-15T23:59:59.000Z

199

Hydrogen Atom and Time Variation of Fine-Structure Constant  

E-Print Network [OSTI]

In this paper, we have solved the de Sitter special relativistic ($\\mathcal{SR}_{cR}$-) Dirac equation of hydrogen in the earth-QSO(quasar) framework reference by means of the adiabatic approach. The aspects of geometry effects of de Sitter space-time described by Beltrami metric are explored and taken into account. It is found that the $\\mathcal{SR}_{cR}$-Dirac equation of hydrogen is a time dependent quantum Hamiltonian system. We provide an explicit calculation to justify the adiabatic approach in dealing with this time-dependent system. Since the radius of de Sitter sphere $R$ is cosmologically large, the evolution of the system is very slow so that the adiabatic approximation legitimately works with high accuracy. We conclude that the electromagnetic fine-structure constant, the electron mass and the Planck constant are time variations. This prediction of fine-structure constant is consistent with the presently available observation data. For confirming it further, experiments/observations are required.

Mu-Lin Yan

2009-11-21T23:59:59.000Z

200

Scattering Anisotropies in n-Type Silicon  

Science Journals Connector (OSTI)

Measurements have been made of magnetoresistance effects in several relatively pure samples of n-type silicon for the purpose of obtaining information on scattering anisotropies. The results indicate that the ratios of relaxation times parallel and perpendicular to a constant-energy-spheroid axis in the six-valley conduction band of silicon are ?II???23 for acoustic-mode intravalley lattice scattering and ?II??>1 for ionized-impurity scattering. Intervalley lattice scattering, important at higher temperatures, is isotropic.

Donald Long and John Myers

1960-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

NVU dynamics. I. Geodesic motion on the constant-potential-energy hypersurface  

E-Print Network [OSTI]

An algorithm is derived for computer simulation of geodesics on the constant potential-energy hypersurface of a system of N classical particles. First, a basic time-reversible geodesic algorithm is derived by discretizing the geodesic stationarity condition and implementing the constant potential energy constraint via standard Lagrangian multipliers. The basic NVU algorithm is tested by single-precision computer simulations of the Lennard-Jones liquid. Excellent numerical stability is obtained if the force cutoff is smoothed and the two initial configurations have identical potential energy within machine precision. Nevertheless, just as for NVE algorithms, stabilizers are needed for very long runs in order to compensate for the accumulation of numerical errors that eventually lead to "entropic drift" of the potential energy towards higher values. A modification of the basic NVU algorithm is introduced that ensures potential-energy and step-length conservation; center-of-mass drift is also eliminated. Analytical arguments confirmed by simulations demonstrate that the modified NVU algorithm is absolutely stable. Finally, simulations show that the NVU algorithm and the standard leap-frog NVE algorithm have identical radial distribution functions for the Lennard-Jones liquid.

Trond S. Ingebrigtsen; Sren Toxvaerd; Ole J. Heilmann; Thomas B. Schrder; Jeppe C. Dyre

2011-08-06T23:59:59.000Z

202

Optical properties of silicon carbide for astrophysical applications I. New laboratory infrared reflectance spectra and optical constants  

E-Print Network [OSTI]

Silicon Carbide (SiC) optical constants are fundamental inputs for radiative transfer models of astrophysical dust environments. However, previously published values contain errors and do not adequately represent the bulk physical properties of the cubic (beta) SiC polytype usually found around carbon stars. We provide new, uncompromised optical constants for beta- and alpha-SiC derived from single-crystal reflectance spectra and investigate quantitatively whether there is any difference between alpha- and beta-SiC that can be seen in infrared spectra and optical functions. Previous optical constants for SiC do not reflect the true bulk properties, and they are only valid for a narrow grain size range. The new optical constants presented here will allow narrow constraints to be placed on the grain size and shape distribution that dominate in astrophysical environments. In addition, our calculated absorption coefficients are much higher than laboratory measurements, which has an impact on the use of previous data to constrain abundances of these dust grains.

K. M. Pitman; A. M. Hofmeister; A. B. Corman; A. K. Speck

2008-03-10T23:59:59.000Z

203

Local Soot Loading Distribution in Cordierite Diesel Particulate Filters by Dynamic Neutron Radiography  

Broader source: Energy.gov [DOE]

Quantitative analysis of the soot loading and soot distribution for Cordierite type DPFs are studied under controlled conditions.

204

Chapter 2. Discrete Distributions Random Variables of the Discrete Type  

E-Print Network [OSTI]

) + c2u2(X)] = c1E[u1(X)] + c2E[u2(X)]. Definition: The kth moment mk, k = 1, 2, · · · of a random

Chen, Chaur-Chin

205

Supernovae, an accelerating universe and the cosmological constant  

Science Journals Connector (OSTI)

...attributes the hydrogen-free type Ia supernovae to the thermonuclear detonation of white dwarf stars and the type II (as well...explode if a binary companion adds to its mass. When a thermonuclear burning wave destroys such a star, by burning approximately...

Robert P. Kirshner

1999-01-01T23:59:59.000Z

206

Property:Document type | Open Energy Information  

Open Energy Info (EERE)

Document type Document type Jump to: navigation, search Property Name Document type Property Type String Description The type of document as a string. This property is used by a variety of concepts including Reference Materials and may contain document types appropriate for multiple concepts. Allows Values Book;Book Review;Book Section;Conference Paper;Conference Proceedings;General;Info Graphic/Map/Chart;Journal Article;Legal;Memorandum;Periodical;Personal Communication;Poster;Report;Thesis/Dissertation;Web Site Pages using the property "Document type" Showing 25 pages using this property. (previous 25) (next 25) 2 2-D Magnetotellurics At The Geothermal Site At Soultz-Sous-Forets- Resistivity Distribution To About 3000 M Depth + Journal Article + 2.8-Ma Ash-Flow Caldera At Chegem River In The Northern Caucasus Mountains (Russia), Contemporaneous Granites, And Associated Ore Deposits + Journal Article +

207

Unifying distribution functions: some lesser known distributions  

E-Print Network [OSTI]

We show that there is a way to unify distribution functions that describe simultaneously a signal in space and (spatial) frequency. Probably the most known of them is the Wigner distribution function. Here we show how to unify functions of the Cohen class, Rihacek's complex energy function, Husimi and Glauber-Sudarshan distribution functions.

Moya-Cessa, J R; Berriel-Valdos, L R; Aguilar-Loreto, O; Barberis-Blostein, P

2008-01-01T23:59:59.000Z

208

Bekenstein Bound of Information Number N and its Relation to Cosmological Parameters in a Universe with and without Cosmological Constant  

E-Print Network [OSTI]

Bekenstein has obtained is an upper limit on the entropy S, and from that, an information number bound N is deduced. In other words, this is the information contained within a given finite region of space that includes a finite amount of energy. Similarly, this can be thought as the maximum amount of information required to perfectly describe a given physical system down to its quantum level. If the energy and the region of space are finite then the number of information N required in describing the physical system is also finite. In this short letter two information number bounds are derived and compared for two types of universe. First, a universe without a cosmological constant lamda and second a universe with a cosmological constant lamda are investigated. This is achieved with the derivation of two different relations that connect the Hubble constant and cosmological constants to the number of information N. We find that the number of information N involved in a the two universes are identical or N1=N2, and that the total mass of the universe scales as the square root of the information number N, containing an information number N of the order of 10E+122. Finally, we expressed Calogero quantization action as a function of the number of information N. We also have found that in self gravitating systems the number of information N in nats is the ratio of the total kinetic to total thermal energy of the system.

Ioannis Haranas; Ioannis Gkigkitzis

2014-06-09T23:59:59.000Z

209

Conductivity and dielectric constants of LiD  

Science Journals Connector (OSTI)

The dielectric constant of LiD has been measured in the frequency region 5-500 kHz at different temperatures up to 340 C. Compared to the results of other workers, the LiD conductivity curves are found to be displaced slightly to lower values than those of LiH. Furthermore, it is also proved that the high ac-conductivity values found by other workers at low temperature in the case of LiH correspond not to true conductivity but are caused by reorientation of complexes. Activation energies corresponding to the motion of a free cation vacancy or the reorientation of complexes have been determined.

P. Varotsos

1974-02-15T23:59:59.000Z

210

Coupling constant constraints in a nonminimally coupled phantom cosmology  

SciTech Connect (OSTI)

In the paper we investigate observational constraints on coupling to gravity constant parameter {xi} using distant supernovae SNIa data, baryon oscillation peak (BOP), the cosmic microwave background radiation (CMBR) shift parameter, and the H(z) data set. We estimate the value of this parameter to constrain the extended quintessence models with nonminimally coupled to gravity phantom scalar field. The combined analysis of observational data favors a value of {xi} which lies in close neighborhood of the conformal coupling. While our estimations are model dependent they give rise to an indirect bound on the equivalence principle.

Szydlowski, Marek; Hrycyna, Orest; Kurek, Aleksandra [Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Cracow (Poland) and Mark Kac Complex Systems Research Centre, Jagiellonian University, Reymonta 4, 30-059 Cracow (Poland); Department of Theoretical Physics, Faculty of Philosophy, John Paul II Catholic University of Lublin, Al. Raclawickie 14, 20-950 Lublin (Poland); Astronomical Observatory, Jagiellonian University, Orla 171, 30-244 Cracow (Poland)

2008-01-15T23:59:59.000Z

211

The Cosmological Constant Problem and Re-interpretation of Time  

E-Print Network [OSTI]

We abandon the interpretation that time is a global parameter in quantum mechanics, replace it by a quantum dynamical variable playing the role of time. This operational re-interpretation of time provides a solution to the cosmological constant problem. The expectation value of the zero-point energy under the new time variable vanishes. The fluctuation of the vacuum energy as the leading contribution to the gravitational effect gives a correct order to the observed "dark energy". The "dark energy" as a mirage is always seen comparable with the matter energy density by an observer using the internal clock time. Conceptual consequences of the re-interpretation of time are also discussed.

M. J. Luo

2013-12-10T23:59:59.000Z

212

Lattice constants and optical response of pseudomorph Si-rich SiGe:B  

SciTech Connect (OSTI)

Pseudomorph epitaxial films of Si{sub 1?x}Ge{sub x}:B were grown on undoped (100) Si for x???0.026 and the B concentration of 1.3??10{sup 20}?cm{sup ?3}.The in-plane and out-of-plane lattice constants were determined using the X-ray techniques for 004 symmetric and 224 asymmetric diffraction. The influence of B and Ge co-doping has been detected in reflectance and ellipsometric spectra from infrared to ultraviolet. Free-hole plasma and Fano-type resonances of Si phonons and localized {sup 11}B and {sup 10}B vibrations have been observed. The spectral shift of E{sub 1} electronic transitions has been quantified. We found a simple way to test the variations of Ge content using relative reflectance spectra.

Caha, O. [CEITECCentral European Institute of Technology, Masaryk University, Kamenice 753/5, 62500 Brno (Czech Republic)] [CEITECCentral European Institute of Technology, Masaryk University, Kamenice 753/5, 62500 Brno (Czech Republic); Kostelnk, P.; ik, J. [ON Semiconductor CR, 1. Mje 2230, Ronov p. Radhot'em 75661 (Czech Republic)] [ON Semiconductor CR, 1. Mje 2230, Ronov p. Radhot'em 75661 (Czech Republic); Kim, Y. D. [Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University, Seoul 130-701 (Korea, Republic of)] [Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University, Seoul 130-701 (Korea, Republic of); Huml?ek, J., E-mail: humlicek@physics.muni.cz [CEITECCentral European Institute of Technology, Masaryk University, Kamenice 753/5, 62500 Brno (Czech Republic); Nano-Optical Property Laboratory and Department of Physics, Kyung Hee University, Seoul 130-701 (Korea, Republic of)

2013-11-11T23:59:59.000Z

213

Some Implications of the Cosmological Constant to Fundamental Physics  

E-Print Network [OSTI]

In the presence of a cosmological constant, ordinary Poincare' special relativity is no longer valid and must be replaced by a de Sitter special relativity, in which Minkowski space is replaced by a de Sitter spacetime. In consequence, the ordinary notions of energy and momentum change, and will satisfy a different kinematic relation. Such a theory is a different kind of a doubly special relativity. Since the only difference between the Poincare' and the de Sitter groups is the replacement of translations by certain linear combinations of translations and proper conformal transformations, the net result of this change is ultimately the breakdown of ordinary translational invariance. From the experimental point of view, therefore, a de Sitter special relativity might be probed by looking for possible violations of translational invariance. If we assume the existence of a connection between the energy scale of an experiment and the local value of the cosmological constant, there would be changes in the kinematics of massive particles which could hopefully be detected in high-energy experiments. Furthermore, due to the presence of a horizon, the usual causal structure of spacetime would be significantly modified at the Planck scale.

R. Aldrovandi; J. P. Beltran Almeida; J. G. Pereira

2007-02-12T23:59:59.000Z

214

On Killing vector fields and Newman-Penrose constants  

E-Print Network [OSTI]

Asymptotically flat spacetimes with one Killing vector field are considered. The Killing equations are solved asymptotically using polyhomogeneous expansions (i.e. series in powers of 1/r an ln r), and solved order by order. The solution to the leading terms of these expansions yield the asymptotic form of the Killing vector field. The possible classes of Killing fields are discussed by analysing their orbits on null infinity. The integrability conditions of the Killing equations are used to obtain constraints on the components of the Weyl tensor (\\Psi_0, \\Psi_1, \\Psi_2) and on the shear (\\sigma). The behaviour of the solutions to the constraint equations is studied. It is shown that for Killing fields that are non-supertranslational the characteristics of the constraint equations are the orbits of the restriction of the Killing field to null infinity. As an application, boost-rotation symmetric spacetimes are considered. The constraints on \\Psi_0 are used to study the behaviour of the coefficients that give rise to the Newman-Penrose constants, if the spacetime is non-polyhomogeneous, or the logarithmic Newman-Penrose constants if the spacetime is polyhomogeneous.

J. A. Valiente-Kroon

1999-03-25T23:59:59.000Z

215

Chemistry of tributyl phosphate and nitric acid at constant volume  

SciTech Connect (OSTI)

This paper addresses the reaction of tributyl phosphate (TBP) with nitric acid (HNO{sub 3}). The reaction pressure of TBP/HNO{sub 3} mixtures as a function of time was measured under constant volume. A simplified model, which parametrically includes autocatalysis, was used to plot the total gas production of the reaction as a function of time. Comparison of the functions shows a rough equivalence in the induction time, reaction time, and total gas production. Predictions of the amounts of reaction products as a function of time were made based on assumptions regarding autocatalysis and using rate constants from experimental data. The derived reaction mechanisms and experimental results have several implications. Tests with a large amount of venting and high surface to volume ratio will show very different behavior than tests with increasing confinement and low surface to volume ratios. The amount alkyl nitrate, carbon monoxide, or hydrogen that reacts within the organic phase is limited by their solubilities and volatilities. The overall yield of both heat and gas per mol of nitric acid or TBP will vary significantly depending on the amount of solution, free volume, and vessel vent capacity.

Agnew, S.F.; Eisenhawer, S.W.; Morris, J.S. [Los Alamos National Lab., NM (United States)

1995-12-31T23:59:59.000Z

216

Long range constant force profiling for measurement of engineering surfaces  

Science Journals Connector (OSTI)

A new instrument bridging the gap between atomic force microscopes (AFMs) and stylus profiling instruments is described. The constant force profiler is capable of subnanometer resolution over a 15??m vertical range with a horizontal traverse length of 50 mm. This long traverse length coupled with the possibilities of utilizing standard radius diamondmeasurement styli make the force profiler more compatible with existing profiling instrument standards. The forces between the specimen and a diamond stylus tipped cantilever spring are sensed as displacements using a capacitance bridge. This displacement signal is then fed through a proportional plus integral controller to a high stability piezoelectric actuator to maintain a constant tip?to?sample force of approximately 100 nN. Much of the sensor head and traverse mechanism is made of Zerodur glass?ceramic to provide the thermal stability needed for long travel measurements. Profiles of a 30?nm silica step height standard and an 8.5??m step etched on Zerodur are presented.

L. P. Howard; S. T. Smith

1992-01-01T23:59:59.000Z

217

Types of Commissioning  

Broader source: Energy.gov [DOE]

Several commissioning types exist to address the specific needs of equipment and systems across both new and existing buildings. The following commissioning types provide a good overview.

218

Granuloma annulare, patch type  

E-Print Network [OSTI]

Granuloma annulare, patch type Frank C Victor MD, Stephaniewas consistent with patch-type granuloma annulare. He wascm, annular, erythematous patch without scale was present on

Victor, Frank C; Mengden, Stephanie

2008-01-01T23:59:59.000Z

219

Alternative Fuels Data Center: Biofuels Production and Distribution  

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

Biofuels Production Biofuels Production and Distribution Contracts to someone by E-mail Share Alternative Fuels Data Center: Biofuels Production and Distribution Contracts on Facebook Tweet about Alternative Fuels Data Center: Biofuels Production and Distribution Contracts on Twitter Bookmark Alternative Fuels Data Center: Biofuels Production and Distribution Contracts on Google Bookmark Alternative Fuels Data Center: Biofuels Production and Distribution Contracts on Delicious Rank Alternative Fuels Data Center: Biofuels Production and Distribution Contracts on Digg Find More places to share Alternative Fuels Data Center: Biofuels Production and Distribution Contracts on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type

220

Annual Coal Distribution Report  

Gasoline and Diesel Fuel Update (EIA)

Distribution Report Release Date: December 19, 2013 | Next Release Date: December 12, 2014 | full report | RevisionCorrection Revision to the Annual Coal Distribution Report...

Note: This page contains sample records for the topic "distribution type constant" 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

Distribution Grid Integration  

Broader source: Energy.gov [DOE]

The DOE Systems Integration team funds distribution grid integration research and development (R&D) activities to address the technical issues that surround distribution grid planning,...

222

Distribution Drive | Open Energy Information  

Open Energy Info (EERE)

Drive Drive Jump to: navigation, search Name Distribution Drive Place Dallas, Texas Zip 75205 Product Biodiesel fuel distributor. Coordinates 32.778155°, -96.795404° 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":32.778155,"lon":-96.795404,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

223

Large Scale Parameter Sweep Studies Using Distributed Matlab  

E-Print Network [OSTI]

1 Large Scale Parameter Sweep Studies Using Distributed Matlab Vikas Argod Graduate Assistant 225. The implementation is done in Matlab. The discussion extends to large scale problems of similar type using distributed matlab. Use of distributed matlab reduced computation time significantly

Bjørnstad, Ottar Nordal

224

Types of Costs Types of Cost Estimates  

E-Print Network [OSTI]

first cost or capital investment): ­ Expenditures made to acquire or develop capital assets ­ Three main· Types of Costs · Types of Cost Estimates · Methods to estimate capital costs MIN E 408: Mining-site management or corporate level expenditure · Direct vs. Indirect Costs ­ Direct (or variable) costs apply

Boisvert, Jeff

225

Types of Costs Types of Cost Estimates  

E-Print Network [OSTI]

-Revenue Relationships · Capital Costs (or first cost or capital investment): ­ Expenditures made to acquire or develop05-1 · Types of Costs · Types of Cost Estimates · Methods to estimate capital costs MIN E 408 ­ off-site management or corporate level expenditure · Direct vs. Indirect Costs ­ Direct (or variable

Boisvert, Jeff

226

Testing the cosmological constant as a candidate for dark energy  

SciTech Connect (OSTI)

It may be difficult to single out the best model of dark energy on the basis of the existing and planned cosmological observations, because many different models can lead to similar observational consequences. However, each particular model can be studied and either found consistent with observations or ruled out. In this paper, we concentrate on the possibility to test and rule out the simplest and by far the most popular of the models of dark energy, the theory described by general relativity with positive vacuum energy (the cosmological constant). We evaluate the conditions under which this model could be ruled out by the future observations made by the Supernova/Acceleration Probe SNAP (both for supernovae and weak lensing) and by the Planck Surveyor cosmic microwave background satellite.

Kratochvil, Jan; Linde, Andrei; Linder, Eric V.; Shmakova, Marina

2003-12-03T23:59:59.000Z

227

Molecular Dynamics Simulations of Solutions at Constant Chemical Potential  

E-Print Network [OSTI]

Molecular Dynamics studies of chemical processes in solution are of great value in a wide spectrum of applications, that range from nano-technology to pharmaceutical chemistry. However, these calculations are affected by severe finite-size effects, such as the solution being depleted as the chemical process proceeds, that influence the outcome of the simulations. To overcome these limitations, one must allow the system to exchange molecules with a macroscopic reservoir, thus sampling a Grand-Canonical ensemble. Despite the fact that different remedies have been proposed, this still represents a key challenge in molecular simulations. In the present work we propose the C$\\mu$MD method, which introduces an external force that controls the environment of the chemical process of interest. This external force, drawing molecules from a finite reservoir, maintains the chemical potential constant in the region where the process takes place. We have applied the C$\\mu$MD method to the paradigmatic case of urea crystall...

Perego, Claudio; Parrinello, Michele

2015-01-01T23:59:59.000Z

228

Asymptotics with a positive cosmological constant: I. Basic framework  

E-Print Network [OSTI]

The asymptotic structure of the gravitational field of isolated systems has been analyzed in great detail in the case when the cosmological constant $\\Lambda$ is zero. The resulting framework lies at the foundation of research in diverse areas in gravitational science. Examples include: i) positive energy theorems in geometric analysis; ii) the coordinate invariant characterization of gravitational waves in full, non-linear general relativity; iii) computations of the energy-momentum emission in gravitational collapse and binary mergers in numerical relativity and relativistic astrophysics; and iv) constructions of asymptotic Hilbert spaces to calculate $S$-matrices and analyze the issue of information loss in the quantum evaporation of black holes. However, by now observations have established that $\\Lambda$ is positive in our universe. In this paper we show that, unfortunately, the standard framework does not extend from the $\\Lambda =0$ case to the $\\Lambda >0$ case in a physically useful manner. In partic...

Ashtekar, Abhay; Kesavan, Aruna

2014-01-01T23:59:59.000Z

229

On gravitational waves in spacetimes with a nonvanishing cosmological constant  

SciTech Connect (OSTI)

We study the effect of a cosmological constant {lambda} on the propagation and detection of gravitational waves. To this purpose we investigate the linearized Einstein's equations with terms up to linear order in {lambda} in a de Sitter and an anti-de Sitter background spacetime. In this framework the cosmological term does not induce changes in the polarization states of the waves, whereas the amplitude gets modified with terms depending on {lambda}. Moreover, if a source emits a periodic waveform, its periodicity as measured by a distant observer gets modified. These effects are, however, extremely tiny and thus well below the detectability by some 20 orders of magnitude within present gravitational wave detectors such as LIGO or future planned ones such as LISA.

Naef, Joachim; Jetzer, Philippe; Sereno, Mauro [Institut fuer Theoretische Physik, Universitaet Zuerich, Winterthurerstrasse 190, CH-8057 Zuerich (Switzerland)

2009-01-15T23:59:59.000Z

230

Path Integral Confined Dirac Fermions in a Constant Magnetic Field  

E-Print Network [OSTI]

We consider Dirac fermion confined in harmonic potential and submitted to a constant magnetic field. The corresponding solutions of the energy spectrum are obtained by using the path integral techniques. For this, we begin by establishing a symmetric global projection, which provides a symmetric form for the Green function. Based on this, we show that it is possible to end up with the propagator of the harmonic oscillator for one charged particle. After some transformations, we derive the normalized wave functions and the eigenvalues in terms of different physical parameters and quantum numbers. By interchanging quantum numbers, we show that our solutions possed interesting properties. The density of current and the non-relativistic limit are analyzed where different conclusions are obtained.

Abdeldjalil Merdaci; Ahmed Jellal; Lyazid Chetouani

2014-04-17T23:59:59.000Z

231

Determination of the Boltzmann Constant Using the Differential - Cylindrical Procedure  

E-Print Network [OSTI]

We report in this paper the progresses on the determination of the Boltzmann constant using the acoustic gas thermometer (AGT) of fixed-length cylindrical cavities. First, we present the comparison of the molar masses of pure argon gases through comparing speeds of sound of gases. The procedure is independent from the methodology by Gas Chromatography-Mass Spectrometry (GC-MS). The experimental results show good agreement between both methods. The comparison offers an independent inspection of the analytical results by GC-MS. Second, we present the principle of the novel differential-cylindrical procedure based on the AGT of two fixed-length cavities. The deletion mechanism for some major perturbations is analyzed for the new procedure. The experimental results of the differential-cylindrical procedure demonstrate some major improvements on the first, second acoustic and third virial coefficients, and the excess half-widths. The three acoustic virial coefficients agree well with the stated-of-the-art experime...

Feng, X J; Lin, H; Gillis, K A; Moldover, M R

2015-01-01T23:59:59.000Z

232

Abstract--There are two types of drivers in production machine systems: constant velocity (CV) motor and servo-motor.  

E-Print Network [OSTI]

the dynamic model of the five-bar hybrid mechanism including its electric motors. Section 3 presents) motor and servo-motor. If a system contains two drivers or more, among which some are of the CV motor while the other are the servo-motor, the system has the so-called hybrid driver architecture

Zhang, WJ "Chris"

233

Measurement of Interfacial Charge-Transfer Rate Constants at n-Type InP/CH3OH Junctions  

Science Journals Connector (OSTI)

Katherine E. Pomykal and Nathan S. Lewis * ... Nagasubramanian, G.; Wheeler, B. L.; Bard, A. J. J. Electrochem. ...

Katherine E. Pomykal; Nathan S. Lewis

1997-04-03T23:59:59.000Z

234

Shearforce-Based Constant-Distance Scanning Electrochemical Microscopy as Fabrication Tool for Needle-Type Carbon-Fiber Nanoelectrodes  

Science Journals Connector (OSTI)

Coating the stems but not the end of the tips of the tapered structures with anodic electrodeposition paint was the strategy for limiting the bare carbon to the foremost end and restricting a feasible voltammetry current response to exactly this section. ... The vibrating carbon fiber tip was fixed in space and the electrochemical cell for the EDP deposition was moved through a stage of three joined stepper motors (SPI Robot Systems, Oppenheim, Germany) with a nominal resolution in x-, y-, and z-direction of 10 nm per microstep. ... Furthermore, electrodeposition paints are com. ...

Emad Mohamed Hussien; Wolfgang Schuhmann; Albert Schulte

2010-06-09T23:59:59.000Z

235

The Evolution of the Multiplicity of Embedded Protostars II: Binary Separation Distribution & Analysis  

E-Print Network [OSTI]

We present the Class I protostellar binary separation distribution based on the data tabulated in the companion paper. We verify the excess of Class I binary stars over solar-type main-sequence stars, especially at separations beyond 500 AU. Although our sources are in nearby star forming regions distributed across the entire sky (including Orion), none of our objects are in a high stellar density environment. The binary separation distribution changes significantly during the Class I phase, and the binary frequency at separations greater than 1000 AU declines steadily with respect to spectral index. Despite these changes, the binary frequency remains constant until the end of the Class I phase, when it drops sharply. We propose a scenario to account for the changes in the Class I binary separation distribution. This scenario postulates that companions with a separation greater than ~1000 AU were ejected during the Class 0 phase, but remain gravitationally bound due to the mass of the envelope. As the envelope dissipates, these companions become unbound and the binary frequency at wide separations declines. This scenario predicts that a large number of Class 0 objects should be non-hierarchical multiple systems, and that many Class I YSOs with a widely separated companion should also have a very close companion. We also find that Class I protostars are not dynamically pristine, and have experienced dynamical evolution before they are visible as Class I objects. For the first time, evidence is presented showing that the Class I binary frequency and the binary separation distribution strongly depend on the star forming environment. The reason for this dependence remains unclear.

Michael Connelley; Bo Reipurth; Alan Tokunaga

2008-03-07T23:59:59.000Z

236

DistributionDrive | Open Energy Information  

Open Energy Info (EERE)

DistributionDrive DistributionDrive Jump to: navigation, search Name DistributionDrive Place Addison, Texas Zip 75001 Product Supplier of Biodiesel, Straight Vegetable Oil (SVO), Recycled Vegetable Oil (WVO) and Engine Conversion Kits to use this fuels. Coordinates 38.477365°, -80.412149° 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":38.477365,"lon":-80.412149,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

237

Nord Distribution Solaire | Open Energy Information  

Open Energy Info (EERE)

Nord Distribution Solaire Nord Distribution Solaire Jump to: navigation, search Name Nord Distribution Solaire Place Roubaix, France Zip 59100 Sector Solar Product An installation company for solar passive and PV system in the North of France. Coordinates 50.691705°, 3.1752° 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":50.691705,"lon":3.1752,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

238

Distributed Generation Systems Inc | Open Energy Information  

Open Energy Info (EERE)

Distributed Generation Systems Inc Distributed Generation Systems Inc Name Distributed Generation Systems Inc Address 200 Union Blvd Place Lakewood, Colorado Zip 80228 Sector Wind energy Product Developer of electricity generation wind power facilities Website http://www.disgenonline.com/ Coordinates 39.718048°, -105.1324055° 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":39.718048,"lon":-105.1324055,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

239

Variable Speed Drive (VSD) Applications in Dual-Duct Constant Volume Systems  

E-Print Network [OSTI]

Models have been developed for static pressure and potential supply fan energy savings by using variable speed drive (VSD) in dual-duct constant volume systems. Experiments have been performed using a full size dual-duct constant volume system...

Joo, I.; Liu, M.; Conger, K.; Wang, G.

2002-01-01T23:59:59.000Z

240

Stability constants of HBED with various metal ions  

E-Print Network [OSTI]

Foundation. vi TABLE OF CONTENTS Page ABSTRACT ACKNOWLEDGEMENTS TABLE OF CONTENTS LIST OF TABLES LIST OF FIGURES INTRODUCTION vr v111 Radiopharmaceuticals and NMR Contrast Agents Design of Chelate Ligands Reasons for Equilibrium Measurements... -log [H]'s. 50 52 16. Plot of Fe (III) -HBED spectrophotometric titration. 53 17. Species distribution for Fe(III) and HBED. 18. Proposed structure for HFeL species. 56 64 INTRODUCTION Radiopharmaceuticals and NMR Contrast Agents...

Long, Gregory Neal

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Property:Distributed Generation System Power Application | Open Energy  

Open Energy Info (EERE)

Application Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Power Application" Showing 21 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Based Load + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Based Load + Distributed Generation Study/Arrow Linen + Based Load + Distributed Generation Study/Dakota Station (Minnegasco) + Based Load +, Backup + Distributed Generation Study/Elgin Community College + Based Load +, Backup + Distributed Generation Study/Emerling Farm + Based Load + Distributed Generation Study/Floyd Bennett + Based Load + Distributed Generation Study/Harbec Plastics + Based Load + Distributed Generation Study/Hudson Valley Community College + Based Load +

242

End-to-end distance distributions and intrachain diffusion constants in unfolded polypeptide chains indicate intramolecular hydrogen bond formation  

Science Journals Connector (OSTI)

...the chromophores and on the distance, r, separating them according to (25...fluorescence lifetime of the donor, and R 0 is the characteristic Forster distance...Mol. Biol. 327 : 867 884 . 16 Pappu R. V. Srinivasan R. Rose G. D. ( 2000 ) Proc. Natl...

Andreas Mglich; Karin Joder; Thomas Kiefhaber

2006-01-01T23:59:59.000Z

243

Physics 250 -Measurements of the Fine Structure Constant Derek Kimball January 2000 1  

E-Print Network [OSTI]

Physics 250 - Measurements of the Fine Structure Constant Derek Kimball January 2000 1 #12;Physics 250 - Measurements of the Fine Structure Constant Derek Kimball January 2000 2 #12;Physics 250 - Measurements of the Fine Structure Constant Derek Kimball January 2000 3 #12;Physics 250 - Measurements

Budker, Dmitry

244

OPTICAL CONSTANTS OF THIN FILMS FROM THE CHARACTERISTIC ELECTRON ENERGY LOSSES  

E-Print Network [OSTI]

114. OPTICAL CONSTANTS OF THIN FILMS FROM THE CHARACTERISTIC ELECTRON ENERGY LOSSES By R. E in the photon energy range from 5 to 30 eV. The optical constants of aluminum from 2 500 A to 6 500 A have been à une étude de l'oscillateur optique. Abstract. 2014 A method for obtaining the optical constants

Paris-Sud XI, Université de

245

Observability analysis of 2D single beacon navigation in the presence of constant  

E-Print Network [OSTI]

that in the presence of known ocean currents, the system is found to be globally observable for constant relative hand, with unknown ocean currents the system fails to be locally weakly observable with constant and ocean current configuration. Interestingly, observability can be achieved with constant (nonzero

Instituto de Sistemas e Robotica

246

Stress Alters Rates and Types of Loss of Heterozygosity in Candida albicans  

Science Journals Connector (OSTI)

...noncommercial use, distribution, and reproduction...Types of Loss of Heterozygosity...stress, heat stress...1999. The distribution of rates...1985. Heat shock induces chromosome loss in the yeast...1949. The distribution of the numbers...types of loss of heterozygosity...stress, heat stress...

A. Forche; D. Abbey; T. Pisithkul; M. A. Weinzierl; T. Ringstrom; D. Bruck; K. Petersen; J. Berman

2011-08-01T23:59:59.000Z

247

Coal Distribution Database, 2006  

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

2009 Final February 2011 2 Overview of 2009 Coal Distribution Tables Introduction The Coal Distribution Report - Annual provides detailed information on domestic coal distribution by origin state, destination state, consumer category, and method of transportation. Also provided is a summary of foreign coal distribution by coal-producing State. This Final 2009 Coal Distribution Report - Annual, supersedes the data contained in the four Quarterly Coal Distribution Reports previously issued for 2009. This report relies on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. In addition, the report

248

Types of Hydropower Plants  

Broader source: Energy.gov [DOE]

There are three types of hydropower facilities: impoundment, diversion, and pumped storage. Some hydropower plants use dams and some do not. The images below show both types of hydropower plants.

249

Theory of Dielectric Constants of LiF  

Science Journals Connector (OSTI)

The static and high-frequency dielectric constants and the effective charge of LiF are calculated on the basis of a simplified model in which the polarizability of the positive ion is neglected and that of the negative ion is attributed entirely to perturbations in the outermost subshell (2p) of electrons. The present calculation differs from the variational treatment of Yamashita mainly in the inclusion of perturbed wave functions differs from the variational treatment of Yamashita mainly in the inclusion of perturbed wave functions for the 2p electrons which are orthogonal to the core-electron wave functions. Also, different methods are employed in evaluating portions of the energy of the crystal in a field and in deducing the effective charge ratio e*e from the calculated energy. It is found that the use of trial wave functions which preserve the orthogonality within individual ions is of prime importance, and leads to results in generally better agreement with observation than the previously used nonorthogonal functions.

Edwin R. Levin and Elmer L. Offenbacher

1960-06-01T23:59:59.000Z

250

On the possible running of the cosmological "constant"  

E-Print Network [OSTI]

Despite the many outstanding cosmological observations leading to a strong evidence for a nonvanishing cosmological constant (CC) term in the gravitational field equations, the theoretical status of this quantity seems to be lagging well behind the observational successes. It thus seems timely to revisit some fundamental aspects of the CC term in Quantum Field Theory (QFT). We emphasize that, in curved space-time, nothing a priori prevents this term from potentially having a mild running behavior associated to quantum effects. Remarkably, this could be the very origin of the dynamical nature of the Dark Energy, in contrast to many other popular options considered in the literature. In discussing this possibility, we also address some recent criticisms concerning the possibility of such running. Our conclusion is that, while there is no comprehensive proof of the CC running, there is no proof of the non-running either. The problem can be solved only through a deeper understanding of the vacuum contributions of massive quantum fields on a curved spacetime background. We suggest that such investigations are at the heart of one of the most important endeavors of fundamental theoretical cosmology in the years to come.

Ilya L. Shapiro; Joan Sola

2009-10-26T23:59:59.000Z

251

Can the cosmological "constant" run? - It may run  

E-Print Network [OSTI]

Using standard quantum field theory, we discuss several theoretical aspects of the possible running of the cosmological constant (CC) term in Einstein's equations. The basic motivation for the present work is to emphasize that this possibility should also be taken into account when considering dynamical models for the dark energy (DE), which are nowadays mainly focused on identifying the DE with the energy density associated to one or more ad hoc scalar fields. At the same time, we address some recent criticisms that have been published (or privately communicated to us) attempting to cast doubts on the fundamental possibility of such running. In this work, we argue that while there is no comprehensive proof of the CC running, there is no rigorous proof of the non-running either. In particular, some purported "non-running theorem" recently adduced in the literature is, in our opinion, completely insubstantial and formally incorrect. The way to the CC running is, therefore, still open and we take here the opportunity to present a pedagogical review of the present state of the art in this field, including a a brief historical account.

Ilya L. Shapiro; Joan Sola

2008-10-04T23:59:59.000Z

252

Abatement of Air Pollution: Distributed Generators (Connecticut) |  

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

Distributed Generators (Connecticut) Distributed Generators (Connecticut) Abatement of Air Pollution: Distributed Generators (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Connecticut Program Type Environmental Regulations Provider Department of Energy and Environmental Protection

253

Typing aspects for MATLAB  

Science Journals Connector (OSTI)

The MATLAB programming language is heavily used in many scientific and engineering domains. Part of the appeal of the language is that one can quickly prototype numerical algorithms without requiring any static type declarations. However, this lack of ... Keywords: MATLAB, dynamic type assertions, typing aspects

Laurie Hendren

2011-03-01T23:59:59.000Z

254

PPL: distribution transformer | The Better Buildings Alliance  

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

Plug & Process Loads » Install a Plug & Process Loads » Install a distribution transformer that will reduce energy use by more than 15% using the distribution transformer specification Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Install a distribution transformer that will reduce energy use by more than 15% using the distribution transformer specification The Plug & Process Loads team developed a low-voltage, dry-type distribution transformer specification that outlines energy-related product requirements. Purchasers can use this document to procure high-efficiency, high-quality products from manufacturers. The specification is unique, as

255

Coal Distribution Database, 2006  

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

Domestic Distribution of U.S. Coal by Origin State, Domestic Distribution of U.S. Coal by Origin State, Consumer, Destination and Method of Transportation, 2009 Final February 2011 2 Overview of 2009 Coal Distribution Tables Introduction The Coal Distribution Report - Annual provides detailed information on domestic coal distribution by origin state, destination state, consumer category, and method of transportation. Also provided is a summary of foreign coal distribution by coal-producing State. This Final 2009 Coal Distribution Report - Annual, supersedes the data contained in the four Quarterly Coal Distribution Reports previously issued for 2009. This report relies on the most current data available from EIA's various monthly, quarterly and annual surveys

256

CONSULTANT REPORT DISTRIBUTED GENERATION  

E-Print Network [OSTI]

Energy Jobs Plan, Governor Brown established a 2020 goal of 12,000 megawatts of localized renewable energy development, or distributed generation, in California. In May 2012, Southern California Edison, renewables, interconnection, integration, electricity, distribution, transmission, costs. Please use

257

Distributed Wind 2015  

Broader source: Energy.gov [DOE]

Distributed Wind 2015 is committed to the advancement of both distributed and community wind energy. This two day event includes a Business Conference with sessions focused on advancing the...

258

Measured dose rate constant from oncology patients administered 18F for positron emission tomography  

SciTech Connect (OSTI)

Purpose: Patient exposure rate measurements verify published patient dose rate data and characterize dose rates near 2-18-fluorodeoxyglucose ({sup 18}F-FDG) patients. A specific dose rate constant based on patient exposure rate measurements is a convenient quantity that can be applied to the desired distance, injection activity, and time postinjection to obtain an accurate calculation of cumulative external radiation dose. This study reports exposure rates measured at various locations near positron emission tomography (PET) {sup 18}F-FDG patients prior to PET scanning. These measurements are normalized for the amount of administered activity, measurement distance, and time postinjection and are compared with other published data. Methods: Exposure rates were measured using a calibrated ionization chamber at various body locations from 152 adult oncology patients postvoid after a mean uptake time of 76 min following injection with a mean activity of 490 MBq {sup 18}F-FDG. Data were obtained at nine measurement locations for each patient: three near the head, four near the chest, and two near the feet. Results: On contact with, 30 cm superior to and 30 cm lateral to the head, the mean (75th percentile) dose rates per unit injected activity at 60 min postinjection were 0.482 (0.511), 0.135 (0.155), and 0.193 (0.223) {mu}Sv/MBq h, respectively. On contact with, 30 cm anterior to, 30 cm lateral to and 1 m anterior to the chest, the mean (75th percentile) dose rates per unit injected activity at 60 min postinjection were 0.623 (0.709), 0.254 (0.283), 0.190 (0.218), and 0.067 (0.081) {mu}Sv/MBq h respectively. 30 cm inferior and 30 cm lateral to the feet, the mean (75th percentile) dose rates per unit injected activity at 60 min postinjection were 0.024 (0.022) and 0.039 (0.044) {mu}Sv/MBq h, respectively. Conclusions: The measurements for this study support the use of 0.092 {mu}Sv m{sup 2}/MBq h as a reasonable representation of the dose rate anterior from the chest of patients immediately following injection. This value can then be reliably scaled to the desired time and distance for planning and staff dose evaluation purposes. At distances closer than 1 m, a distance-specific dose rate constant of 0.367 {mu}Sv/MBq h at 30 cm is recommended for accurate calculations. An accurate patient-specific dose rate constant that accounts for patient-specific variables (e.g., distribution and attenuation) will allow an accurate evaluation of the dose rate from a patient injected with an isotope rather than simply utilizing a physical constant.

Quinn, Brian; Holahan, Brian; Aime, Jean; Humm, John; St Germain, Jean; Dauer, Lawrence T. [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States); Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States); Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States) and Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States); Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States); Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States) and Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, New York 10065 (United States)

2012-10-15T23:59:59.000Z

259

Feasibility study of volumetric modulated arc therapy with constant dose rate for endometrial cancer  

SciTech Connect (OSTI)

To investigate the feasibility, efficiency, and delivery accuracy of volumetric modulated arc therapy with constant dose rate (VMAT-CDR) for whole-pelvic radiotherapy (WPRT) of endometrial cancer. The nine-field intensity-modulated radiotherapy (IMRT), VMAT with variable dose-rate (VMAT-VDR), and VMAT-CDR plans were created for 9 patients with endometrial cancer undergoing WPRT. The dose distribution of planning target volume (PTV), organs at risk (OARs), and normal tissue (NT) were compared. The monitor units (MUs) and treatment delivery time were also evaluated. For each VMAT-CDR plan, a dry run was performed to assess the dosimetric accuracy with MatriXX from IBA. Compared with IMRT, the VMAT-CDR plans delivered a slightly greater V{sub 20} of the bowel, bladder, pelvis bone, and NT, but significantly decreased the dose to the high-dose region of the rectum and pelvis bone. The MUs decreased from 1105 with IMRT to 628 with VMAT-CDR. The delivery time also decreased from 9.5 to 3.2 minutes. The average gamma pass rate was 95.6% at the 3%/3 mm criteria with MatriXX pretreatment verification for 9 patients. VMAT-CDR can achieve comparable plan quality with significant shorter delivery time and smaller number of MUs compared with IMRT for patients with endometrial cancer undergoing WPRT. It can be accurately delivered and be an alternative to IMRT on the linear accelerator without VDR capability.

Yang, Ruijie [Department of Radiation Oncology, Peking University Third Hospital, Beijing (China); Wang, Junjie, E-mail: junjiewang47@yahoo.com [Department of Radiation Oncology, Peking University Third Hospital, Beijing (China); Xu, Feng [Department of Biomedical Engineering, Peking University Third Hospital, Beijing (China); Li, Hua [Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing (China); Zhang, Xile [Department of Radiation Oncology, Peking University Third Hospital, Beijing (China)

2013-10-01T23:59:59.000Z

260

Infinite Randomness Expansion and Amplification with a Constant Number of Devices  

E-Print Network [OSTI]

We present a device-independent randomness expansion protocol, involving only a constant number of non-signaling quantum devices, that achieves \\emph{infinite expansion}: starting with $m$ bits of uniform private randomness, the protocol can produce an unbounded amount of certified randomness that is $\\exp(-\\Omega(m^{1/3}))$-close to uniform and secure against a quantum adversary. The only parameters which depend on the size of the input are the soundness of the protocol and the security of the output (both are inverse exponential in $m$). This settles a long-standing open problem in the area of randomness expansion and device-independence. The analysis of our protocols involves overcoming fundamental challenges in the study of \\emph{adaptive} device-independent protocols. Our primary technical contribution is the design and analysis of device-independent protocols which are \\emph{Input Secure}; that is, their output is guaranteed to be secure against a quantum eavesdropper, \\emph{even if the input randomness was generated by that same eavesdropper}! The notion of Input Security may be of independent interest to other areas such as device-independent quantum key distribution.

Matthew Coudron; Henry Yuen

2014-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Property:Distributed Generation System Enclosure | Open Energy Information  

Open Energy Info (EERE)

System Enclosure System Enclosure Jump to: navigation, search This is a property of type String. The allowed values for this property are: Indoor Outdoor Dedicated Shelter Pages using the property "Distributed Generation System Enclosure" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Indoor + Distributed Generation Study/615 kW Waukesha Packaged System + Outdoor + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Outdoor + Distributed Generation Study/Arrow Linen + Outdoor + Distributed Generation Study/Dakota Station (Minnegasco) + Outdoor + Distributed Generation Study/Elgin Community College + Indoor + Distributed Generation Study/Emerling Farm + Dedicated Shelter + Distributed Generation Study/Floyd Bennett + Outdoor +

262

Alternative Fuels Data Center: Biofuels Distribution Tax Exemption  

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

Biofuels Distribution Biofuels Distribution Tax Exemption to someone by E-mail Share Alternative Fuels Data Center: Biofuels Distribution Tax Exemption on Facebook Tweet about Alternative Fuels Data Center: Biofuels Distribution Tax Exemption on Twitter Bookmark Alternative Fuels Data Center: Biofuels Distribution Tax Exemption on Google Bookmark Alternative Fuels Data Center: Biofuels Distribution Tax Exemption on Delicious Rank Alternative Fuels Data Center: Biofuels Distribution Tax Exemption on Digg Find More places to share Alternative Fuels Data Center: Biofuels Distribution Tax Exemption on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biofuels Distribution Tax Exemption Fuel delivery vehicles, machinery, equipment, and related services that are

263

Organic Macromolecular High Dielectric Constant Materials: Synthesis, Characterization, and Applications  

Science Journals Connector (OSTI)

It will lead to a thermal effect and perhaps thermal failure of devices. ... The white light was then overlapped with the pump beam in a 2 mm quartz cuvette containing the sample, and the change in the absorbance for the signal was collected by a CCD detector (Ocean Optics). ... In many ?-conjugated organic materials, up-converted ultrafast fluorescence dynamics and anisotropy decay experiments have been applied successfully to reveal possible ultrafast processes, such as vibrational relaxation and singletsinglet annihilation, occurring in a time scale shorter than 20 ps, and to validate the presence and type of intramolecular energy and charge transfer processes. ...

Meng Guo; Teruaki Hayakawa; Masa-aki Kakimoto; Theodore Goodson; III

2011-09-27T23:59:59.000Z

264

Integrated Transmission and Distribution Control  

SciTech Connect (OSTI)

Distributed, generation, demand response, distributed storage, smart appliances, electric vehicles and renewable energy resources are expected to play a key part in the transformation of the American power system. Control, coordination and compensation of these smart grid assets are inherently interlinked. Advanced control strategies to warrant large-scale penetration of distributed smart grid assets do not currently exist. While many of the smart grid technologies proposed involve assets being deployed at the distribution level, most of the significant benefits accrue at the transmission level. The development of advanced smart grid simulation tools, such as GridLAB-D, has led to a dramatic improvement in the models of smart grid assets available for design and evaluation of smart grid technology. However, one of the main challenges to quantifying the benefits of smart grid assets at the transmission level is the lack of tools and framework for integrating transmission and distribution technologies into a single simulation environment. Furthermore, given the size and complexity of the distribution system, it is crucial to be able to represent the behavior of distributed smart grid assets using reduced-order controllable models and to analyze their impacts on the bulk power system in terms of stability and reliability. The objectives of the project were to: Develop a simulation environment for integrating transmission and distribution control, Construct reduced-order controllable models for smart grid assets at the distribution level, Design and validate closed-loop control strategies for distributed smart grid assets, and Demonstrate impact of integrating thousands of smart grid assets under closed-loop control demand response strategies on the transmission system. More specifically, GridLAB-D, a distribution system tool, and PowerWorld, a transmission planning tool, are integrated into a single simulation environment. The integrated environment allows the load flow interactions between the bulk power system and end-use loads to be explicitly modeled. Power system interactions are modeled down to time intervals as short as 1-second. Another practical issue is that the size and complexity of typical distribution systems makes direct integration with transmission models computationally intractable. Hence, the focus of the next main task is to develop reduced-order controllable models for some of the smart grid assets. In particular, HVAC units, which are a type of Thermostatically Controlled Loads (TCLs), are considered. The reduced-order modeling approach can be extended to other smart grid assets, like water heaters, PVs and PHEVs. Closed-loop control strategies are designed for a population of HVAC units under realistic conditions. The proposed load controller is fully responsive and achieves the control objective without sacrificing the end-use performance. Finally, using the T&D simulation platform, the benefits to the bulk power system are demonstrated by controlling smart grid assets under different demand response closed-loop control strategies.

Kalsi, Karanjit; Fuller, Jason C.; Tuffner, Francis K.; Lian, Jianming; Zhang, Wei; Marinovici, Laurentiu D.; Fisher, Andrew R.; Chassin, Forrest S.; Hauer, Matthew L.

2013-01-16T23:59:59.000Z

265

EIA -Quarterly Coal Distribution  

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

Coal Distribution Coal Distribution Home > Coal> Quarterly Coal Distribution Back Issues Quarterly Coal Distribution Archives Release Date: June 27, 2013 Next Release Date: September 2013 The Quarterly Coal Distribution Report (QCDR) provides detailed quarterly data on U.S. domestic coal distribution by coal origin, coal destination, mode of transportation and consuming sector. All data are preliminary and superseded by the final Coal Distribution - Annual Report. Year/Quarters By origin State By destination State Report Data File Report Data File 2009 January-March pdf xls pdf xls April-June pdf xls pdf xls July-September pdf xls pdf October-December pdf xls pdf 2010 January-March pdf xls pdf xls April-June pdf xls pdf xls July-September pdf xls pdf xls

266

Innovation flow through social networks: Productivity distribution  

E-Print Network [OSTI]

A detailed empirical analysis of the productivity of non financial firms across several countries and years shows that productivity follows a non-Gaussian distribution with power law tails. We demonstrate that these empirical findings can be interpreted as consequence of a mechanism of exchanges in a social network where firms improve their productivity by direct innovation or/and by imitation of other firm's technological and organizational solutions. The type of network-connectivity determines how fast and how efficiently information can diffuse and how quickly innovation will permeate or behaviors will be imitated. From a model for innovation flow through a complex network we obtain that the expectation values of the productivity level are proportional to the connectivity of the network of links between firms. The comparison with the empirical distributions reveals that such a network must be of a scale-free type with a power-law degree distribution in the large connectivity range.

T. Di Matteo; T. Aste; M. Gallegati

2004-06-19T23:59:59.000Z

267

Atom interferometric techniques for measuring gravitational acceleration and constant magnetic field gradients  

E-Print Network [OSTI]

We discuss two techniques for probing the effects of a homogeneous force acting on cold atoms, such as that due to gravity or a constant magnetic field gradient, using grating echo-type atom interferometers. A comprehensive theoretical description of signals generated by both two-pulse and three-pulse interferometers, accounting for magnetic sub-levels in the atomic ground state, is shown to agree with experimental results. Laser-cooled samples of $^{85}$Rb with temperatures as low as 2.4 $\\mu$K have been achieved in a relatively large glass cell with well-suppressed magnetic fields. Using transit time limited interferometer signals, we demonstrate sensitivity to externally applied magnetic gradients as small as $\\sim 4$ mG/cm. With these timescales we estimate that precision measurements of the gravitational acceleration, $g$, are possible with both the two-pulse and three-pulse echo interferometers. Whereas the two-pulse signal is a position-sensitive technique to measure the absolute value of $g$, the thre...

Barrett, B

2011-01-01T23:59:59.000Z

268

Structure disorder degree of polysilicon thin films grown by different processing: Constant C from Raman spectroscopy  

SciTech Connect (OSTI)

Flat, low-stress, boron-doped polysilicon thin films were prepared on single crystalline silicon substrates by low pressure chemical vapor deposition. It was found that the polysilicon films with different deposition processing have different microstructure properties. The confinement effect, tensile stresses, defects, and the Fano effect all have a great influence on the line shape of Raman scattering peak. But the effect results are different. The microstructure and the surface layer are two important mechanisms dominating the internal stress in three types of polysilicon thin films. For low-stress polysilicon thin film, the tensile stresses are mainly due to the change of microstructure after thermal annealing. But the tensile stresses in flat polysilicon thin film are induced by the silicon carbide layer at surface. After the thin film doped with boron atoms, the phenomenon of the tensile stresses increasing can be explained by the change of microstructure and the increase in the content of silicon carbide. We also investigated the disorder degree states for three polysilicon thin films by analyzing a constant C. It was found that the disorder degree of low-stress polysilicon thin film larger than that of flat and boron-doped polysilicon thin films due to the phase transformation after annealing. After the flat polysilicon thin film doped with boron atoms, there is no obvious change in the disorder degree and the disorder degree in some regions even decreases.

Wang, Quan, E-mail: wangq@mail.ujs.edu.cn [School of mechanical engineering, Jiangsu University, Zhenjiang 212013 (China); State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); Zhang, Yanmin; Hu, Ran; Ren, Naifei [School of mechanical engineering, Jiangsu University, Zhenjiang 212013 (China); Ge, Daohan [School of mechanical engineering, Jiangsu University, Zhenjiang 212013 (China); State Key Laboratory of Transducer Technology, Chinese Academy of Sciences, Shanghai 200050 (China)

2013-11-14T23:59:59.000Z

269

Confronting the relaxation mechanism for a large cosmological constant with observations  

E-Print Network [OSTI]

In order to deal with a large cosmological constant a relaxation mechanism based on modified gravity has been proposed recently. By virtue of this mechanism the effect of the vacuum energy density of a given quantum field/string theory (no matter how big is its initial value in the early universe) can be neutralized dynamically, i.e. without fine tuning, and hence a Big Bang-like evolution of the cosmos becomes possible. Remarkably, a large class F^n_m of models of this kind, namely capable of dynamically adjusting the vacuum energy irrespective of its value and size, has been identified. In this paper, we carefully put them to the experimental test. By performing a joint likelihood analysis we confront these models with the most recent observational data on type Ia supernovae (SNIa), the Cosmic Microwave Background (CMB), the Baryonic Acoustic Oscillations (BAO) and the high redshift data on the expansion rate, so as to determine which ones are the most favored by observations. We compare the optimal relaxation models F^n_m found by this method with the standard or concordance LambdaCDM model, and find that some of these models may appear as almost indistinguishable from it. Interestingly enough, this shows that it is possible to construct viable solutions to the tough cosmological fine tuning problem with models that display the same basic phenomenological features as the concordance model.

Spyros Basilakos; Florian Bauer; Joan Sola

2012-01-03T23:59:59.000Z

270

Rock types, pore types, and hydrocarbon exploration  

SciTech Connect (OSTI)

A proposed exploration-oriented method of classifying porosity in sedimentary rocks is based on microscopic examination cores or cuttings. Factors include geometry, size, abundance, and connectivity of the pores. The porosity classification is predictive of key petrophysical characteristics: porosity-permeability relationships, capillary pressures, and (less certainly) relative permeabilities. For instance, intercrystalline macroporosity typically is associated with high permeability for a given porosity, low capillarity, and favorable relative permeabilities. This is found to be true whether this porosity type occurs in a sucrosic dolomite or in a sandstone with pervasive quartz overgrowths. This predictive method was applied in three Rocky Mountain oil plays. Subtle pore throat traps could be recognized in the J sandstone (Cretaceous) in the Denver basin of Colorado by means of porosity permeability plotting. Variations in hydrocarbon productivity from a Teapot Formation (Cretaceous) field in the Powder River basin of Wyoming were related to porosity types and microfacies; the relationships were applied to exploration. Rock and porosity typing in the Red River Formation (Ordovician) reconciled apparent inconsistencies between drill-stem test, log, and mud-log data from a Williston basin wildcat. The well was reevaluated and completed successfully, resulting in a new field discovery. In each of these three examples, petrophysics was fundamental for proper evaluation of wildcat wells and exploration plays.

Coalson, E.B.; Hartmann, D.J.; Thomas, J.B.

1985-05-01T23:59:59.000Z

271

The Structure of a Tunicate C-type Lectin from Polyandrocarpa misakiensis Complexed with  

E-Print Network [OSTI]

, Hills Road, Cambridge CB2 2QH, UK C-type lectins are calcium-dependent carbohydrate-recognising proteins misakiensis revealed the presence of a single calcium atom per monomer with a dissociation constant of 2.6 m in structure from other C-type lectins mainly in the diverse loop regions and in the second a-helix, which

Williams, Roger L.

272

Advanced Distributed Generation LLC | Open Energy Information  

Open Energy Info (EERE)

LLC LLC Jump to: navigation, search Name Advanced Distributed Generation LLC Address 200 West Scott Park Drive, MS # 410 Place Toledo, Ohio Zip 43607 Sector Solar Product Agriculture; Consulting; Installation; Maintenance and repair; Retail product sales and distribution Phone number 419-725-3401 Website http://www.advanced-dg.com Coordinates 41.6472294°, -83.5975882° 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":41.6472294,"lon":-83.5975882,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

273

Network Reconfiguration at the Distribution System with Distributed Generators  

Science Journals Connector (OSTI)

This article proposes a novel model for distribution network reconfiguration to meet current distribution system operating demands. In the model the connection of distributed generators to distribution system is ...

Gao Xiaozhi; Li Linchuan; Xue Hailong

2010-01-01T23:59:59.000Z

274

GENERATING SYNCHRONIZABLE TEST SEQUENCES BASED ON FINITE STATE MACHINE WITH DISTRIBUTED PORTS 1  

E-Print Network [OSTI]

GENERATING SYNCHRONIZABLE TEST SEQUENCES BASED ON FINITE STATE MACHINE WITH DISTRIBUTED PORTS 1 with several distributed interfaces, called ports. A test generation method is developed for generating test generation and fault detectability. Several types of such interfaces have been standardized

von Bochmann, Gregor

275

A study of microstrip delay lines on high dielectric constant substrates.  

E-Print Network [OSTI]

??Microstrip delay lines have many possible applications in today's world of high frequency communications and radar systems. High dielectric constant (high-x) substrates allow for the (more)

Ashour, Thomas Joseph

2012-01-01T23:59:59.000Z

276

Distribution free tests for mixed probability distributions  

Science Journals Connector (OSTI)

......specifically, suppose that X^ is drawn from a population having distribution function F^x), where Let nHk = (uik + vjk-wti) = n^ui Then E(tk) = \\ and t* = (^+ ... +tn)jn. Proceeding as in the derivation of (2-3-2), we can where......

E. A. C. THOMAS

1969-12-01T23:59:59.000Z

277

Distribution System State Estimation  

Office of Scientific and Technical Information (OSTI)

these include reactive power management, outage management, loss reduction, demand response, adaptable over-current protection, condition-based maintenance, distributed...

278

Distribution of Correspondence  

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

Defines correct procedures for distribution of correspondence to the Naval Reactors laboratories. Does not cancel another directive. Expired 8-30-97.

1996-08-30T23:59:59.000Z

279

Ductless Hydronic Distribution Systems  

Broader source: Energy.gov [DOE]

This presentation is from a Building America webinar conducted on November 8, 2011, by the Alliance for Residential Building Innovation (ARBI) about ductless hydronic distribution systems.

280

What is Distributed Wind?  

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

and refurbishers, including those from Canada, Mexico, Europe, China, and South Africa. In 2013, 30.4 MW of new distributed wind capacity was added, representing nearly...

Note: This page contains sample records for the topic "distribution type constant" 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

Distribution reliability analysis.  

E-Print Network [OSTI]

??This thesis presents an example for optimization of distribution maintenance scheduling of a recloser. It applies a risk reduction technique associated with maintenance of the (more)

Bhusal, Prabodh

2007-01-01T23:59:59.000Z

282

Property:Distributed Generation System Application | Open Energy  

Open Energy Info (EERE)

System Application System Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Application" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Combined Heat and Power + Distributed Generation Study/615 kW Waukesha Packaged System + Combined Heat and Power + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Combined Heat and Power + Distributed Generation Study/Arrow Linen + Combined Heat and Power + Distributed Generation Study/Dakota Station (Minnegasco) + Combined Heat and Power + Distributed Generation Study/Elgin Community College + Combined Heat and Power + Distributed Generation Study/Emerling Farm + Combined Heat and Power +

283

Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate  

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

Biodiesel Blend Biodiesel Blend Distribution Mandate to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate on Google Bookmark Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate on Delicious Rank Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Blend Distribution Mandate on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Biodiesel Blend Distribution Mandate All state-owned diesel fueling facilities must provide fuel containing at

284

Property:Distributed Generation Prime Mover | Open Energy Information  

Open Energy Info (EERE)

Property Property Edit with form History Facebook icon Twitter icon » Property:Distributed Generation Prime Mover Jump to: navigation, search Property Name Distributed Generation Prime Mover Property Type Page Description Make and model of power sources. Pages using the property "Distributed Generation Prime Mover" Showing 22 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Ingersoll Rand I-R PowerWorks 70 + Distributed Generation Study/615 kW Waukesha Packaged System + Waukesha VGF 36GLD + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Aisin Seiki G60 + Distributed Generation Study/Arrow Linen + Coast Intelligen 150-IC with ECS + Distributed Generation Study/Dakota Station (Minnegasco) + Capstone C30 +

285

Parametric probability distributions in reliability  

E-Print Network [OSTI]

Parametric probability distributions in reliability F.P.A. Coolen Department of Mathematical parametric probability distributions which are frequently used in reliability. We present some main as models for specific reliability scenarios. Keywords: Binomial distribution, Exponential distribution

Coolen, Frank

286

Second-order elastic constants of AgCl from 20 to 430C  

Science Journals Connector (OSTI)

The three independent adiabatic second-order elastic constants of AgCl have been measured from 20 to 430C using the McSkimin pulse-superposition technique. Two single crystals with (110) and (001) axes were used in the measurements. Measurements on the (110) crystal gave the complete set of constants and showed that the longitudinal elastic constant C11?=(C11+C12+2C44)2 decreased by 37%, the shear constant C44 decreased by 15%, and the shear constant C?=(C11-C12)2 decreased by 65% over this temperature range. The longitudinal elastic constant C11 decreased by 45%, the elastic constant C12 decreased by 31% and the bulk modulus Bs=(C11+2C12)3 decreased by 37%. The (001) crystal was used as a check on the consistency of the measurements. The decreases in the elastic constants are linear, as expected, until approximately 320C, whereupon C11?, C44, C11, C12, and Bs begin to decrease more rapidly than linearly and are 6.8, 0.8, 6.0, 9.2, and 8.0%, respectively, below the expected linearity at 430C. By contrast, the shear constant C? decreases linearly over the entire temperature range. The elastic constant behavior thus becomes anomalous near the melting point, just like many of the other physical properties of the silver halides. This anomalous behavior may be attributed to the unusually high defect concentration near the melting point. Similar changes in elastic constants are seen in superionic conductors near the transition into the superionic state: a large decrease in C11, but only small changes in C44. This may indicate that the silver halides are just starting the transition to the superionic state when the halide sublattice melts and the transition is frustrated.

W. C. Hughes and L. S. Cain

1996-03-01T23:59:59.000Z

287

Reliability improvement of distribution systems using SSVR  

Science Journals Connector (OSTI)

This paper presents a reliability assessment algorithm for distribution systems using a Static Series Voltage Regulator (SSVR). Furthermore, this algorithm considers the effects of Distributed Generation (DG) units, alternative sources, system reconfiguration, load shedding and load adding on distribution system reliability indices. In this algorithm, load points are classified into 8 types and separated restoration times are considered for each class. Comparative studies are conducted to investigate the impacts of DG and alternative source unavailability on the distribution system reliability. For reliability assessment, the customer-oriented reliability indices such as SAIFI, SAIDI, CAIDI ASUI and also load- and energy-oriented indices such as ENS and AENS are evaluated. The effectiveness of the proposed algorithm is examined on the two standard distribution systems consisting of 33 and 69 nodes. The best location of the SSVR in distribution systems is determined based on different reliability indices, separately. Results show that the proposed algorithm is efficient for large-scale radial distribution systems and can accommodate the effects of fault isolation and load restoration.

Mehdi Hosseini; Heidar Ali Shayanfar; Mahmoud Fotuhi-Firuzabad

2009-01-01T23:59:59.000Z

288

Document Type: Subject Terms  

E-Print Network [OSTI]

Title: Authors: Source: Document Type: Subject Terms: Abstract: Full Text Word Count: ISSN the department back on track. The action is to call a meeting of the team leaders and stress the urgency o

Major, Arkady

289

Indeterminacy with Constant Money Growth Rules and Income-Based Liquidity Constraints  

E-Print Network [OSTI]

Indeterminacy with Constant Money Growth Rules and Income-Based Liquidity Constraints Stefano Bosi Abstract We study the implications of constant money growth rules on the sta- bility properties. In this context, the steady state value of the velocity of money becomes a cru- cial parameter for gauging whether

Boyer, Edmond

290

Measurement of the Axial-Vector Coupling Constant $g_A$ in Neutron Beta Decay  

E-Print Network [OSTI]

The matrix element \\Vud of the CKM matrix can be determined by two independent measurements in neutron decay: the neutron lifetime $\\tau_n$ and the ratio of coupling constants $\\lambda=g_A/g_V$, which is most precisely determined by measurements of the beta asymmetry angular correlation coefficient~$A$. We present recent progress on the determination of these coupling constants.

Bastian Maerkisch; Hartmut Abele

2014-10-15T23:59:59.000Z

291

Universal Gravitational Constant EX-9908 Page 1 of 13 Re-Written by Geoffrey R. Clarion  

E-Print Network [OSTI]

Newton was able to deduce his law of universal gravitation. Newton's law of universal gravitation: 2 21 rUniversal Gravitational Constant EX-9908 Page 1 of 13 Re-Written by Geoffrey R. Clarion Universal Gravitational Constant EQUIPMENT 1 Gravitational Torsion Balance AP-8215 1 X-Y Adjustable Diode Laser OS-8526A 1

Dai, Pengcheng

292

Video Description Length Guided Constant Quality Video Coding with Bitrate Constraint  

E-Print Network [OSTI]

Video Description Length Guided Constant Quality Video Coding with Bitrate Constraint Lei Yang propose a new video encoding strategy -- Video description length guided Constant Quality video coding with Bitrate Constraint (V-CQBC), for large scale video transcoding systems of video charing websites

Tomkins, Andrew

293

Numerical Analysis of Non-constant Discounting with an Application to Renewable Resource Management  

E-Print Network [OSTI]

Numerical Analysis of Non-constant Discounting with an Application to Renewable Resource Management illustrate the approach by studying welfare and observational equivalence for a particular renewable resource man- agement problem. Keywords: Non-constant discounting, numerical methods, non-renewable resources

Karp, Larry S.

294

Macdonald's Constant Term Conjectures For Exceptional Root Systems* Frank G. Garvan and Gaston Gonnet  

E-Print Network [OSTI]

Macdonald's Constant Term Conjectures For Exceptional Root Systems* A Frank G. Garvan and Gaston Gonnet bstract: We announce proofs of Macdonald's constant term conjectures for the affine root systems result mply that Macdonald's conjectures are true in form for any root system, and the complete truth

Garvan, Frank

295

Polynomial time algorithms for constant capacitated single-item lot sizing problem with stepwise production cost  

E-Print Network [OSTI]

production cost Ayse Akbalik , Christophe Rapine LGIPM, Université de Lorraine, Ile du Saulcy, 57045 Metz. Assuming constant production capacity, constant batch size and Wagner- Whitin cost structure, we derive O sizing problem, stepwise costs, polynomial time algorithm, dynamic programming. 1. Introduction We study

Paris-Sud XI, Université de

296

Calculation of hyperfine coupling constants of radicals by density-functional theory  

Science Journals Connector (OSTI)

Hyperfine coupling constants for small radicals have been calculated using the density-functional theory with a gradient-corrected (GC) local-spin-density approximation (LSDA). The agreement between the calculated and observed results is fairly good. The GC-LSDA is essential to calculate the isotropic hyperfine coupling constants for ? radicals. For ? radicals, the simple LSDA also leads to relatively good results.

Nobuhiko Ishii and Tatsuo Shimizu

1993-08-01T23:59:59.000Z

297

Dynamics of kinematically constrained bimolecular reactions having constant product recoil energy  

E-Print Network [OSTI]

Dynamics of kinematically constrained bimolecular reactions having constant product recoil energy reactions in which the product recoil energy is assumed constant (CPR approximation). It is further assumed-shaped, peaking at the vibrational level with an energy equal to the reaction exoergicity minus the product recoil

Zare, Richard N.

298

MODIFICATION DE LA CHAMBRE DE COMPENSATION D'UN RESPIROMTRE A PRESSION CONSTANTE  

E-Print Network [OSTI]

MODIFICATION OF THE COMPENSATION CHAMBER OF A CONSTANT PRESSURE RESPIROMETER A change was madeNOTE MODIFICATION DE LA CHAMBRE DE COMPENSATION D'UN RESPIROM?TRE A PRESSION CONSTANTE Andrée PIHET compensation (appelée aussi fiole de référence) qui élimine les effets des changements barométriques et

Boyer, Edmond

299

Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Nuclear Anapole Moment  

E-Print Network [OSTI]

Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Nuclear Anapole Moment;Weak Interactions in Atoms Nuclear Anapole Moment Weak Coupling Constants Plan of the talk Weak Interactions in Atoms Charged and Neutral Currents. Effective P-odd Hamiltonian Nuclear Anapole Moment

Pines, Alexander

300

AN EXTENDED NICHOLS CHART WITH CONSTANT MAGNITUDE LOCI OF SENSITIVITY AND  

E-Print Network [OSTI]

AN EXTENDED NICHOLS CHART WITH CONSTANT MAGNITUDE LOCI OF SENSITIVITY AND COMPLEMENTARY SENSITIVITY chart) and constant magnitude loci MS of |S(j)|. While the for- mer are part of standard methodologies the complementary sensitivity and sensitivity functions. In order to handle such resonance peak specifications

Regruto, Diego

Note: This page contains sample records for the topic "distribution type constant" 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

FDTD Analysis of Patch Antennas on High Dielectric-Constant Substrates Surrounded  

E-Print Network [OSTI]

P42655 1 FDTD Analysis of Patch Antennas on High Dielectric-Constant Substrates Surrounded constant is the dominant mechanism affecting the radiation pattern of a patch antenna fabricated along the dielectric substrate, thus reducing the unwanted diffraction. Patch antennas surrounded

Tentzeris, Manos

302

Type I Tanks  

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

I Tanks I Tanks * 12 Type I tanks were built between 1951-53 * 750,000 gallon capacity; 75 feet in diameter by 24 ½ feet high * Partial secondary containment with leak detection * Contain approximately 10 percent of the waste volume * 7 Type I tanks have leaked waste into the tank annulus; the amount of waste stored in these tanks is kept below the known leak sites that have appeared over the decades of

303

Jansen type of spondylometaphyseal dysplasia  

Science Journals Connector (OSTI)

Metaphyseal dysplasia, type Jansen (JMD), is a rare skeletal dysplasia ... we propose the term spondylometaphyseal dysplasia, type Jansen.

J. B. Campbell; Kazimierz Kozlowski; Tadeusz Lejman; J. Sulko

2000-04-01T23:59:59.000Z

304

The Evolution of the Multiplicity of Embedded Protostars. II. Binary Separation Distribution and Analysis  

Science Journals Connector (OSTI)

We present the Class I protostellar binary separation distribution based on the data tabulated in a companion paper. We verify the excess of Class I binary stars over solar-type main-sequence stars in the separation range from 500 AU to 4500 AU. Although our sources are in nearby star-forming regions distributed across the entire sky (including Orion), none of our objects are in a high stellar density environment. A log-normal function, used by previous authors to fit the main-sequence and T Tauri binary separation distributions, poorly fits our data, and we determine that a log-uniform function is a better fit. Our observations show that the binary separation distribution changes significantly during the Class I phase, and that the binary frequency at separations greater than 1000 AU declines steadily with respect to spectral index. Despite these changes, the binary frequency remains constant until the end of the Class I phase, when it drops sharply. We propose a scenario to account for the changes in the Class I binary separation distribution. This scenario postulates that a large number of companions with a separation greater than ~1000 AU were ejected during the Class 0 phase, but remain gravitationally bound due to the significant mass of the Class I envelope. As the envelope dissipates, these companions become unbound and the binary frequency at wide separations declines. Circumstellar and circumbinary disks are expected to play an important role in the orbital evolution at closer separations. This scenario predicts that a large number of Class 0 objects should be non-hierarchical multiple systems, and that many Class I young stellar objects (YSOs) with a widely separated companion should also have a very close companion. We also find that Class I protostars are not dynamically pristine, but have experienced dynamical evolution before they are visible as Class I objects. Our analysis shows that the Class I binary frequency and the binary separation distribution strongly depend on the star-forming environment.

Michael S. Connelley; Bo Reipurth; Alan T. Tokunaga

2008-01-01T23:59:59.000Z

305

The design and implementation of a distributed hierarchy for overcurrent protection and monitoring of a power distribution system  

E-Print Network [OSTI]

be made locally. Since most distribution substations are unmanned, this requires a special service trip by a meter reading crew. Thus, this information is not immediately available to system operators who must constantly determine the most efficient... interface would allow substation personnel to monitor the feeder load currents and to verify the system's response to disturbances on the feeder. An external communication link would also provide all of this information to a remote operator...

Zeigler, John Charles

2012-06-07T23:59:59.000Z

306

NREL: Distributed Grid Integration - Webmaster  

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

Webmaster Webmaster Please enter your name and email address in the boxes provided, then type your message below. When you are finished, click "Send Message." NOTE: If you enter your e-mail address incorrectly, we will be unable to reply. Your name: Your email address: Your message: Send Message Printable Version Distributed Grid Integration Home Capabilities Projects Research Staff Working with Us Did you find what you needed? Yes 1 No 0 Thank you for your feedback. Would you like to take a moment to tell us how we can improve this page? Submit We value your feedback. Thanks! We've received your feedback. Something went wrong. Please try again later. NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.

307

Constant extension rate tensile tests on 304L stainless steel in simulated hazardous low-level waste  

SciTech Connect (OSTI)

New waste tanks which handle hazardous low-level waste were proposed to be constructed in H-area. The candidate material for the tanks is AISI Type 304L (304L) stainless steel. Constant extension rate tensile (CERT) tests were conducted to assess the susceptibility of 304L to stress-corrosion cracking (SCC) in these waste solutions. The tests demonstrated that 304L was not susceptible to SCC in simulated wastes. Based on these tests and previous pitting corrosion studies 304L is a suitable material of construction for the new tanks. Comparison tests in the same simulants were performed on A537 carbon steel (A537), a material that is similar to material of construction for the current tanks. Stress-corrosion cracking was indicated in two of the simulants. If carbon steel tanks are utilized to handle the hazardous low-level wastes, inhibitors such as nitrite or hydroxide will be necessary to prevent corrosion.

Wiersma, B.J.

1992-04-01T23:59:59.000Z

308

Characterization of high-power lithium-ion cells during constant current cycling. Part I. Cycle performance and electrochemical diagnostics  

SciTech Connect (OSTI)

Twelve-cm{sup 2} pouch type lithium-ion cells were assembled with graphite anodes, LiNi{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2} cathodes and 1M LiPF{sub 6}/EC/DEC electrolyte. These pouch cells were cycled at different depths of discharge (100 percent and 70 percent DOD) at room temperature to investigate cycle performance and pulse power capability. The capacity loss and power fade of the cells cycled over 100 percent DOD was significantly faster than the cell cycled over 70 percent DOD. The overall cell impedance increased with cycling, although the ohmic resistance from the electrolyte was almost constant. From electrochemical analysis of each electrode after cycling, structural and/or impedance changes in the cathode are responsible for most of the capacity and power fade, not the consumption of cycleable Li from side-reactions.

Shim, Joongpyo; Striebel, Kathryn A.

2003-01-24T23:59:59.000Z

309

Verification Calculation Results to Validate the Procedures and Codes for Pin-by-Pin Power Computation in VVER Type Reactors with MOX Fuel Loading  

SciTech Connect (OSTI)

One of the important problems for ensuring the VVER type reactor safety when the reactor is partially loaded with MOX fuel is the choice of appropriate physical zoning to achieve the maximum flattening of pin-by-pin power distribution. When uranium fuel is replaced by MOX one provided that the reactivity due to fuel assemblies is kept constant, the fuel enrichment slightly decreases. However, the average neutron spectrum fission microscopic cross-section for {sup 239}Pu is approximately twice that for {sup 235}U. Therefore power peaks occur in the peripheral fuel assemblies containing MOX fuel which are aggravated by the interassembly water. Physical zoning has to be applied to flatten the power peaks in fuel assemblies containing MOX fuel. Moreover, physical zoning cannot be confined to one row of fuel elements as is the case with a uniform lattice of uranium fuel assemblies. Both the water gap and the jump in neutron absorption macroscopic cross-sections which occurs at the interface of fuel assemblies with different fuels make the problem of calculating space-energy neutron flux distribution more complicated since it increases nondiffusibility effects. To solve this problem it is necessary to update the current codes, to develop new codes and to verify all the codes including nuclear-physical constants libraries employed. In so doing it is important to develop and validate codes of different levels--from design codes to benchmark ones. This paper presents the results of the burnup calculation for a multiassembly structure, consisting of MOX fuel assemblies surrounded by uranium dioxide fuel assemblies. The structure concerned can be assumed to model a fuel assembly lattice symmetry element of the VVER-1000 type reactor in which 1/4 of all fuel assemblies contains MOX fuel.

Chizhikova, Z.N.; Kalashnikov, A.G.; Kapranova, E.N.; Korobitsyn, V.E.; Manturov, G.N.; Tsiboulia, A.A.

1998-12-01T23:59:59.000Z

310

Vehicle Specifications Battery Type: Li-Ion  

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

Under hood above powertrain Under hood above powertrain Nominal System Voltage: 333 V Rated Capacity (C/3): 40 Ah Cooling Method: Glycol / Water mix Powertrain Motor Type: DC Brushless Number of Motors: One Motor Cooling Type: Glycol / Water mix Drive Wheels: Rear Wheel Drive Transmission: None (gear ratio only in rear axle) Charger Location: Underhood Charger Port: Driver's side, front quarter panel Type: Conductive (J1772 connector) Input Voltage(s): 120 or 240 VAC Chassis Aluminum Body on Steel Frame Rear Suspension: Solid Axle with Leaf Springs Front Suspension: Dual A-arm with Coil Springs Weights Design Curb Weight: 3250 lbs Delivered Curb Weight: 3310 lbs 7 Distribution F/R: 55.2/44.8% GVWR: 4450 lbs Max Payload: 940 lbs + 200 lbs driver 1 Performance Goal Payload: 1000 lbs + 200 lbs driver

311

Property:Distributed Generation System Heating-Cooling Application | Open  

Open Energy Info (EERE)

Heating-Cooling Application Heating-Cooling Application Jump to: navigation, search This is a property of type Page. Pages using the property "Distributed Generation System Heating-Cooling Application" Showing 21 pages using this property. D Distributed Generation Study/10 West 66th Street Corp + Domestic Hot Water +, Space Heat and/or Cooling + Distributed Generation Study/Aisin Seiki G60 at Hooligans Bar and Grille + Domestic Hot Water + Distributed Generation Study/Arrow Linen + Domestic Hot Water + Distributed Generation Study/Dakota Station (Minnegasco) + Space Heat and/or Cooling +, Other + Distributed Generation Study/Elgin Community College + Space Heat and/or Cooling +, Domestic Hot Water + Distributed Generation Study/Emerling Farm + Domestic Hot Water +, Process Heat and/or Cooling +

312

Coal Distribution Database, 2008  

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

4Q 2009 4Q 2009 April 2010 Quarterly Coal Distribution Table Format and Data Sources 4Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal Distribution Report is a preliminary report, based on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. The final report will rely on the receipt of annual data to replace the imputed monthly data for smaller electric generation plants that are excluded from the monthly filing requirement, and final data for all other respondents. The Coal Distribution Report traces coal from the origin State to the destination State by transportation mode. The data sources beginning with the 2008 Coal Distribution Report

313

Electricity Distribution System Workshop  

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

Grid Tech Team Grid Tech Team Discussion Summary Electricity Distribution System Workshop 2 Table of Contents INTRODUCTION ............................................................................................................................................. 3 EXECUTIVE SUMMARY .................................................................................................................................. 4 Process ...................................................................................................................................................... 4 Common Themes ...................................................................................................................................... 5 Discussion Topic Tables ............................................................................................................................. 8

314

Ductless Hydronic Distribution  

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

DUCTLESS HYDRONIC DUCTLESS HYDRONIC DISTRIBUTION Alliance for Residential Building Innovation David Springer, Davis Energy Group Context  Target: Builders of high performance new homes & deep retrofits  Why is this technology key to meeting performance goals of future homes?  Distribution Efficiency * Distribution efficiency for well insulated, tight ducts in attics ≈ 85% * Duct energy losses drives placement of ducts inside conditioned space, which adds cost and interferes with structure and architecture * Ductless hydronic systems can approach 100% distribution efficiency; piping needs little space  Delivery Energy * Fans: 0.58 W/cfm or 9 (heating) to 27 (cooling) W/kBtuh * Pumps: 8 W/gpm, or 0.8 W/kBtuh Context  Sizing * Conventional systems tend to be too large for low load homes

315

Gossiping in distributed systems  

E-Print Network [OSTI]

Exchange of information between various nodes in a distributed network can be useful to utilize the available resources effectively. Gossiping algorithms can be used for this purpose. We begin with a survey of various gossiping schemes for different...

Penubothu, Muralidhar V

2012-06-07T23:59:59.000Z

316

Central Versus Distributed Production  

Broader source: Energy.gov [DOE]

Central, semi-central, and distributed production facilities are expected to play a role in the evolution and long-term use of hydrogen as an energy carrier. The different resources and processes...

317

Recoverable distributed shared memory  

E-Print Network [OSTI]

Distributed Shared Memory (DSM) is a model for interprocess communication, implemented on top of message passing systems. In this model, processes running on separate hosts can access a shared, coherent memory address space, provided...

Kanthadai, Sundarrajan S

2012-06-07T23:59:59.000Z

318

Coal Distribution Database, 2008  

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

4Q 2009 April 2010 Quarterly Coal Distribution Table Format and Data Sources 4Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal...

319

Efficient distributed quantum computing  

E-Print Network [OSTI]

We provide algorithms for efficiently moving and addressing quantum memory in parallel. These imply that the standard circuit model can be simulated with a low overhead by a more realistic model of a distributed quantum ...

Beals, Robert

320

TYPE OF OPERATION  

Office of Legacy Management (LM)

3!NEEi_S1 3!NEEi_S1 past: -~~~-~~~~~-~~~---------- current: ------------_------------- Owner contacted q yes g no; if ye=, date contacted TYPE OF OPERATION --~~__--~-~~~---- 5 Research & Development 5 Facility Type 0 Production scale testing c1 Pilot Scale 0 Bench Scale Process z Theareti cal Studi es Sample Sr Analysis 0 Production D Disposal/Storage TYPE OF CONTRACT ---------------- 0 Manufacturing 0 University 0 Research Clrganization B Government Cpanaored Faci 1 i ty 0 Other ~~---~~---_--~~-----_ a Prime 13 Subcontract& D PurcSase Order 0 Other information (i.e., cost + fixed fee, unit price, time & material, +z) ----_----------------------- Cantract/Purchaae Order #-d-z=&-/) -2_7~-------------Is_------------ PERIOD: CONTRACTING I%~(?) - 1465

Note: This page contains sample records for the topic "distribution type constant" 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

US Recovery Act Smart Grid Projects - Electric Distributions Systems | Open  

Open Energy Info (EERE)

Distributions Systems Distributions Systems Jump to: navigation, search CSV Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":500,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026 further results","default":"","geoservice":"google","zoom":false,"width":"600px","height":"350px","centre":false,"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":"","icon":"","visitedicon":"","forceshow":true,"showtitle":true,"hidenamespace":false,"template":false,"title":"","label":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"locations":[{"text":"

322

Environment-Dependent Fundamental Physical Constants in the Theory of General Inconstancy  

E-Print Network [OSTI]

A theory of special inconstancy, in which some fundamental physical constants such as the fine-structure and gravitational constants may vary, is proposed in pregeometry. In the special theory of inconstancy, the \\alpha-G relation of \\alpha=3\\pi/[16ln(4\\pi/5GM_W^2)] between the varying fine-structure and gravitaional constants (where M_W is the charged weak boson mass) is derived from the hypothesis that both of these constants are related to the same fundamental length scale in nature. Furthermore, it leads to the prediction of dot{{\\alpha}}/\\alpha=(-0.8\\pm2.5)\\times10^{-14}yr^{-1} from the most precise limit of dot{G}/G=(-0.6\\pm2.0)\\times10^{-12}yr^{-1} by Thorsett, which is not only consistent with the recent observation of dot{{\\alpha}}/\\alpha=(0.5\\pm0.5)\\times10^{-14}yr^{-1} by Webb et al. but also feasible for future experimental tests. Also a theory of general inconstancy, in which any fundamental physical constants may vary, is proposed in "more general relativity", by assuming that the space-time is "environment-dependent". In the general theory of inconstancy, the G-\\Lambda\\ relation between the varying gravitational and cosmological constants is derived from the hypothesis that the space-time metric is a function of \\tau, the "environment-coodinate", in addition to x^{\\mu}, the ordinary space-time coodinates. Furthermore, it leads to the prediction of the varying cosmological constant, which is consistent with the present observations. In addition, the latest observation of spatial variation in the fine-structure constant from VLT/UVES of (1.1\\pm 0.2)\\times 10^{-6}GLyr^{-1} by King et al. is suggested to be taken as a clear evidence for environment-dependent fundamental physical constants

Hidezumi Terazawa

2012-02-09T23:59:59.000Z

323

Types of quantum information  

E-Print Network [OSTI]

Quantum, in contrast to classical, information theory, allows for different incompatible types (or species) of information which cannot be combined with each other. Distinguishing these incompatible types is useful in understanding the role of the two classical bits in teleportation (or one bit in one-bit teleportation), for discussing decoherence in information-theoretic terms, and for giving a proper definition, in quantum terms, of ``classical information.'' Various examples (some updating earlier work) are given of theorems which relate different incompatible kinds of information, and thus have no counterparts in classical information theory.

Robert B. Griffiths

2007-07-25T23:59:59.000Z

324

Types of quantum information  

Science Journals Connector (OSTI)

Quantum, in contrast to classical, information theory, allows for different incompatible types (or species) of information which cannot be combined with each other. Distinguishing these incompatible types is useful in understanding the role of the two classical bits in teleportation (or one bit in one-bit teleportation), for discussing decoherence in information-theoretic terms, and for giving a proper definition, in quantum terms, of classical information. Various examples (some updating earlier work) are given of theorems which relate different incompatible kinds of information, and thus have no counterparts in classical information theory.

Robert B. Griffiths

2007-12-21T23:59:59.000Z

325

On the classification of type D spacetimes  

E-Print Network [OSTI]

We give a classification of the type D spacetimes based on the invariant differential properties of the Weyl principal structure. Our classification is established using tensorial invariants of the Weyl tensor and, consequently, besides its intrinsic nature, it is valid for the whole set of the type D metrics and it applies on both, vacuum and non-vacuum solutions. We consider the Cotton-zero type D metrics and we study the classes that are compatible with this condition. The subfamily of spacetimes with constant argument of the Weyl eigenvalue is analyzed in more detail by offering a canonical expression for the metric tensor and by giving a generalization of some results about the non-existence of purely magnetic solutions. The usefulness of these results is illustrated in characterizing and classifying a family of Einstein-Maxwell solutions. Our approach permits us to give intrinsic and explicit conditions that label every metric, obtaining in this way an operational algorithm to detect them. In particular a characterization of the Reissner-Nordstr\\"{o}m metric is accomplished.

J. J. Ferrando; J. A. Sez

2002-12-20T23:59:59.000Z

326

Prompt neutron decay constants in uranium diluted with matrix material systems  

SciTech Connect (OSTI)

Rossi-Alpha measurements were performed on uranium diluted with matrix material systems to determine the prompt neutron decay constants. These constants represent an eigenvalue characteristic of these particular critical assemblies, which can be experimentally measured by the Rossi-Alpha or pulse neutron source techniques and calculated by a deterministic or Monte Carlo method. In the measurements presented in this summary, highly enriched foils diluted in various X/{sup 235}U ratios with polyethylene and SiO{sub 2}, and polyethylene and aluminum were assembled to a high multiplication and the prompt neutron decay constants were obtained by the Rossi-Alpha technique.

Sanchez, R. G. (Rene G.); Loaiza, D. J. (David J.); Brunson, G. S. (Glenn S.)

2001-01-01T23:59:59.000Z

327

Full causal bulk viscous LRS Bianchi I with time varying constants  

E-Print Network [OSTI]

In this paper we study the evolution of a LRS Bianchi I Universe, filled with a bulk viscous cosmological fluid in the presence of time varying constants "but" taking into account the effects of a c-variable into the curvature tensor. We find that the only physical models are those which ``constants'' $G$ and $c$ are growing functions on time $t$, while the cosmological constant $\\Lambda$ is a negative decreasing function. In such solutions the energy density obeys the ultrastiff matter equation of state i.e. $\\omega=1$.

J. A. Belinchn

2004-10-15T23:59:59.000Z

328

Note: Spring constant calibration of nanosurface-engineered atomic force microscopy cantilevers  

Science Journals Connector (OSTI)

The determination of the dynamic spring constant (k d ) of atomic force microscopy cantilevers is of crucial importance for converting cantilever deflection to accurate force data. Indeed the non-destructive fast and accurate measurement method of the cantilever dynamic spring constant by Sader et al. [Rev. Sci. Instrum.83 103705 (2012)] is confirmed here for plane geometry but surface modified cantilevers. It is found that the measured spring constants (k eff the dynamic one k d ) and the calculated (k d 1) are in good agreement within less than 10% error.

2014-01-01T23:59:59.000Z

329

Distributed Tabletops: Territoriality and Orientation in Distributed Collaboration  

E-Print Network [OSTI]

Distributed Tabletops: Territoriality and Orientation in Distributed Collaboration Abstract Previous research has shown that orientation and territory serve key roles during tabletop collaboration. However, no one has yet investigated whether they can play similar roles in distributed collaboration

Robinson, Peter

330

Fusion systems of -type  

Science Journals Connector (OSTI)

We prove results on 2-fusion systems related to the 2-fusion systems of groups of Lie type over the field of order 2 and certain sporadic groups. The results are used in a later paper to determine the N-systems: the 2-fusion systems of N-groups.

Michael Aschbacher

2013-01-01T23:59:59.000Z

331

Pruning Simply Typed -terms  

Science Journals Connector (OSTI)

......looking for the smallest pout > r /) 6out > //_ gout > B,, c/) pout > p such that: pout...and pout h ^out . Bout b y minimaiKy o f tout gout pout w e deduce; 6out gout gout^ pout < pout Pruning Simply Typed A-terms......

STEFANO BERARDI

1996-10-01T23:59:59.000Z

332

Renewable Energy Co-Location of Distribution Facilities (Virginia) |  

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

Co-Location of Distribution Facilities (Virginia) Co-Location of Distribution Facilities (Virginia) Renewable Energy Co-Location of Distribution Facilities (Virginia) < Back Eligibility Commercial Construction Developer Fuel Distributor Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Systems Integrator Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Virginia Program Type Siting and Permitting Provider Virginia State Corporation Commission This legislation applies to distribution facilities, which include poles and wires, cables, pipelines, or other underground conduits by which a renewable generator is able to (i) supply electricity generated at its

333

New Construction of Distribution Lines, Service Lines, and Appurtenant  

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

New Construction of Distribution Lines, Service Lines, and New Construction of Distribution Lines, Service Lines, and Appurtenant Facilities in Certain Visually Significant Resources Outside Residential Subdivisions (New York) New Construction of Distribution Lines, Service Lines, and Appurtenant Facilities in Certain Visually Significant Resources Outside Residential Subdivisions (New York) < Back Eligibility Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State New York Program Type Environmental Regulations Provider New York State Public Service Commission Any proposed construction of distribution lines, service lines, and appurtenant facilities to electric utilities located near scenic areas of

334

Ge atom distribution in buried dome islands  

SciTech Connect (OSTI)

Laser-assisted atom probe tomography microscopy is used to provide direct and quantitative compositional measurements of tri-dimensional Ge distribution in Ge dome islands buried by Si. Sub-nanometer spatial resolution 3D imaging shows that islands keep their facets after deposition of the Si cap, and that the island/substrate/Si cap interfaces are abrupt. The core of the domes contains 55% of Ge, while the island shell exhibits a constant composition of 15% of Ge. The {l_brace}113{r_brace} facets of the islands present a Ge enrichment up to 35%. The wetting layer composition is not homogeneous, varying from 9.5% to 30% of Ge.

Portavoce, A.; Berbezier, I.; Ronda, A.; Mangelinck, D. [CNRS, IM2NP, Case 142, 13397 Marseille Cedex 20 (France); Hoummada, K. [Aix-Marseille Universite, IM2NP, Case 142, 13397 Marseille Cedex 20 (France)

2012-04-16T23:59:59.000Z

335

A constant-mass fuel delivery system for use in underwater autonomous vehicles  

E-Print Network [OSTI]

This thesis describes the design and assembly of two constant-mass fuel tanks to be used in autonomous underwater vehicles (AUVs). The fuel tanks are part of a power supply designed to increase AUV endurance without limiting ...

Saxton-Fox, Theresa Ann

2012-01-01T23:59:59.000Z

336

Improved Measurement of the Muon Lifetime and Determination of the Fermi Constant  

E-Print Network [OSTI]

The MuLan collaboration has measured the lifetime of the positve muon to a precision of 1.0 parts per million. The Fermi constant is determined to a precision of 0.6 parts per million.

P. T. Debevec

2011-08-22T23:59:59.000Z

337

The creation of fiberglass tanks and parts for autonomous underwater vehicle constant buoyancy power supply  

E-Print Network [OSTI]

The purpose of this thesis was to construct and seal air and containment tanks and other parts for a constant buoyancy power supply for an Autonomous Underwater Vehicle, or AUV. While multiple materials and techniques were ...

Sack, Jean H. (Jean Hope)

2013-01-01T23:59:59.000Z

338

New Approaches Indicate Constant Viral Diversity despite Shifts in Assemblage Structure in an Australian Hypersaline Lake  

Science Journals Connector (OSTI)

...Microbiology New Approaches Indicate Constant...and Planetary Science, University...Environmental Science, Policy, and Management, University...of Biological Sciences, University...developed an approach to estimate viral...

Joanne B. Emerson; Brian C. Thomas; Karen Andrade; Karla B. Heidelberg; Jillian F. Banfield

2013-08-30T23:59:59.000Z

339

Use of Rough Sets and Spectral Data for Building Predictive Models of Reaction Rate Constants  

Science Journals Connector (OSTI)

A model for predicting the log of the rate constants for alkaline hydrolysis of organic esters has been developed with the use of gas-phase mid-infrared library spectra and a...

Collette, Timothy W; Szladow, Adam J

1994-01-01T23:59:59.000Z

340

Measurement of the Elastic Constants of Lithium Acetate by Means of the Brillouin Effect  

Science Journals Connector (OSTI)

The numerical values of the elastic constants at room temperature are given. The significance of the results and the various causes of uncertainty are discussed. Indices of refraction and density are also measured.

R. Vacher; L. Boyer; M. Boissier

1972-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

A study of microstrip delay lines on high dielectric constant substrates  

E-Print Network [OSTI]

Microstrip delay lines have many possible applications in today's world of high frequency communications and radar systems. High dielectric constant (high-x) substrates allow for the building of miniaturized microstrip delay fines which...

Ashour, Thomas Joseph

2012-06-07T23:59:59.000Z

342

Analysis of three-phase rectifiers with constant-voltage loads  

E-Print Network [OSTI]

This work presents a quantitative analysis of the operating characteristics of three-phase diode bridge rectifiers with AC-side reactance and constant-voltage loads. We focus on the case where the AC-side currents vary ...

Caliskan, Vahe

343

Low-Frequency Dielectric Constant of LiF, NaF, NaCl, NaBr, KCl, and KBr by the Method of Substitution  

Science Journals Connector (OSTI)

The 1000-Hz 300K dielectric constants of some alkali halides were measured to an accuracy of 0.01% by the method of substitution. Reproducibly different values for various crystals of the same type were obtained which varied beyond the experimental error. The ranges of results for various crystals of each type measured are LiF, 9.0355-9.0360; NaF, 5.0719-5.0722; NaCl, 5.8940-5.8956; NaBr, 6.3957-6.3974; KCl, 4.8112-4.8182; and KBr, 4.8735-4.8762. The spread for each type of crystal is thought to be attributable to random trace impurities. The numbers are discussed in the light of past values.

Carl Andeen; John Fontanella; Donald Schuele

1970-12-15T23:59:59.000Z

344

The characteristics of atmospheric radio frequency discharges with frequency increasing at a constant power density  

SciTech Connect (OSTI)

A computational model is used to investigate the characteristics of atmospheric radio frequency discharges by increasing frequency from 20 to 100 MHz at a constant power density. The simulation results show that increasing frequency can effectively enhance electron density before the transition frequency but after it the ignition is quenched then the electron density decreases. However this simulation also indicates the maximum time-averaged electron energy reduces monotonically with the excitation frequency increasing at a constant power density.

Zhang Yuantao; Li Qingquan; Lou Jie; Li Qingmin [School of Electrical Engineering, Shandong University, Jinan, Shandong Province 250061 (China)

2010-10-04T23:59:59.000Z

345

The export responsiveness of the Argentine grain export marketing system: a constant market share analysis  

E-Print Network [OSTI]

THE EXPORT RESPONSIVENESS OF THE ARGENTINE GRAIN EXPORT MARKET NG SYSTEM: A CONSTANT MARKET SHARE ANALYSIS A Thesis by SCOTT ALAN MILLIMET Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1982 Ma) or Subject: Agricultural Economics THE EXPORT RESPONSIVENESS OF THE ARGENTINE GRAIN EXPORT MARKETING SYSTEM: A CONSTANT MARKET SHARE ANALYSIS A Thesis by SCOTT ALAN MILLIMET Approved as to style...

Millimet, Scott Alan

1982-01-01T23:59:59.000Z

346

Magnetic properties and homogeneous distribution of Gd{sup 3+} ions in gadolinium molybdenum borate glass with high Gd{sub 2}O{sub 3} content  

SciTech Connect (OSTI)

Highlights: ? The magnetic susceptibility of Gd{sub 2}O{sub 3}MoO{sub 3}B{sub 2}O{sub 3} glass was examined in T = 1.8300 K. ? The effective magnetic moment was ?{sub eff} = 7.87 ?{sub B}. ? The Weiss constant was ? = ?0.7 K. ? Gd{sup 3+} ions are distributed homogeneously as paramagnetic ions down to T = 1.8 K. -- Abstract: The magnetic susceptibility and specific heat of 21.25Gd{sub 2}O{sub 3}63.75MoO{sub 3}15B{sub 2}O{sub 3} (mol%) glass showing the crystallization of ferroelastic ??-Gd{sub 2}(MoO{sub 4}){sub 3} crystals are examined in the temperature range of T = 1.8300 K to clarify magnetic and distribution states of Gd{sup 3+} ions. The magnetic susceptibility obeys the CurieWeiss law, giving the effective magnetic moment of ?{sub eff} = 7.87 ?{sub B} and the Weiss constant of ? = ?0.7 K. Any peak such as ?-type anomaly is not observed in the temperature dependence of specific heat in T = 1.85 K. It is suggested that Gd{sup 3+} ions in the glass with a high Gd{sub 2}O{sub 3} content of 21.25 mol% are distributed homogeneously and randomly as paramagnetic ions down to T = 1.8 K without inducing any strong magnetic interaction. The present study suggests that glasses based on the MoO{sub 3}B{sub 2}O{sub 3} system are good hosts for the homogeneous solubility of a large amount of rare-earth oxides.

Suzuki, F.; Honma, T. [Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan)] [Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan); Doi, Y.; Hinatsu, Y. [Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810 (Japan)] [Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810 (Japan); Komatsu, T., E-mail: komatsu@mst.nagaokaut.ac.jp [Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan)

2012-11-15T23:59:59.000Z

347

Coal Distribution Database, 2006  

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

7 7 December 2008 2007 Changes in Coal Distribution Table Format and Data Sources The changes in the coal distribution data sources made in 2006 are carried over to the 2007 tables. As in 2006, EIA used data from the EIA-3 survey to distribute synfuel to the electric generation sector on a state level, aggregated with all of the other coal (such as bituminous, subbituminous, and lignite coal) sent to electric generating plants. EIA supplemented the EIA-3 data with previously collected information to determine the mode of transportation from the synfuel plant to the electric generating consumer, which was not reported on the EIA-3A survey form. Although not contained in the EIA-6A master file, this information has been documented in an ancillary spreadsheet in the EIA

348

Coal Distribution Database, 2008  

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

Origin State, Origin State, Consumer, Destination and Method of Transportation 3Q 2009 February 2010 Quarterly Coal Distribution Table Format and Data Sources 3Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal Distribution Report is a preliminary report, based on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. The final report will rely on the receipt of annual data to replace the imputed monthly data for smaller electric generation plants that are excluded from the monthly filing requirement, and final data for all other respondents. The Coal Distribution Report traces coal from the origin State to the destination State by

349

distribution | OpenEI  

Open Energy Info (EERE)

distribution distribution Dataset Summary Description This dataset represents a historical repository of all the numerical data from the smartgrid.gov website condensed into spreadsheets to enable analysis of the data. Below are a couple of things worth noting: Source Smartgrid.gov Date Released March 04th, 2013 (11 months ago) Date Updated March 04th, 2013 (11 months ago) Keywords AMI costs distribution smart grid transmission Data application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon SmartGrid.gov Quarterly Data Summary 4Q12 (xlsx, 112.1 KiB) application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon SmartGrid.gov Quarterly Data Summary 3Q12 (xlsx, 107.9 KiB) application/vnd.openxmlformats-officedocument.spreadsheetml.sheet icon SmartGrid.gov Quarterly Data Summary 2Q12 (xlsx, 111.9 KiB)

350

Computing Frontier: Distributed Computing  

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

Computing Computing Frontier: Distributed Computing and Facility Infrastructures Conveners: Kenneth Bloom 1 , Richard Gerber 2 1 Department of Physics and Astronomy, University of Nebraska-Lincoln 2 National Energy Research Scientific Computing Center (NERSC), Lawrence Berkeley National Laboratory 1.1 Introduction The field of particle physics has become increasingly reliant on large-scale computing resources to address the challenges of analyzing large datasets, completing specialized computations and simulations, and allowing for wide-spread participation of large groups of researchers. For a variety of reasons, these resources have become more distributed over a large geographic area, and some resources are highly specialized computing machines. In this report for the Snowmass Computing Frontier Study, we consider several questions about distributed computing

351

Distributed Wind Market Applications  

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

Distributed Wind Market Distributed Wind Market Applications T. Forsyth and I. Baring-Gould Technical Report NREL/TP-500-39851 November 2007 NREL is operated by Midwest Research Institute ● Battelle Contract No. DE-AC36-99-GO10337 National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 * www.nrel.gov Operated for the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy by Midwest Research Institute * Battelle Contract No. DE-AC36-99-GO10337 Technical Report NREL/TP-500-39851 November 2007 Distributed Wind Market Applications T. Forsyth and I. Baring-Gould Prepared under Task No. WER6.7502 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

352

Hydrogen Pathway Cost Distributions  

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

Pathway Cost Distributions Pathway Cost Distributions Jim Uihlein Fuel Pathways Integration Tech Team January 25, 2006 2 Outline * Pathway-Independent Cost Goal * Cost Distribution Objective * Overview * H2A Influence * Approach * Implementation * Results * Discussion Process * Summary 3 Hydrogen R&D Cost Goal * Goal is pathway independent * Developed through a well defined, transparent process * Consumer fueling costs are equivalent or less on a cents per mile basis * Evolved gasoline ICE and gasoline-electric hybrids are benchmarks * R&D guidance provided in two forms * Evolved gasoline ICE defines a threshold hydrogen cost used to screen or eliminate options which can't show ability to meet target * Gasoline-electric hybrid defines a lower hydrogen cost used to prioritize projects for resource allocation

353

Coal Distribution Database, 2008  

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

Destination State, Destination State, Consumer, Destination and Method of Transportation 3Q 2009 February 2010 Quarterly Coal Distribution Table Format and Data Sources 3Q 2009 In keeping with EIA's efforts to increase the timeliness of its reports, this Quarterly Coal Distribution Report is a preliminary report, based on the most current data available from EIA's various monthly, quarterly and annual surveys of the coal industry and electric power generation industry. The final report will rely on the receipt of annual data to replace the imputed monthly data for smaller electric generation plants that are excluded from the monthly filing requirement, and final data for all other respondents. The Coal Distribution Report traces coal from the origin State to the destination State by

354

Discrete Pearson distributions  

SciTech Connect (OSTI)

These distributions are generated by a first order recursive scheme which equates the ratio of successive probabilities to the ratio of two corresponding quadratics. The use of a linearized form of this model will produce equations in the unknowns matched by an appropriate set of moments (assumed to exist). Given the moments we may find valid solutions. These are two cases; (1) distributions defined on the non-negative integers (finite or infinite) and (2) distributions defined on negative integers as well. For (1), given the first four moments, it is possible to set this up as equations of finite or infinite degree in the probability of a zero occurrence, the sth component being a product of s ratios of linear forms in this probability in general. For (2) the equation for the zero probability is purely linear but may involve slowly converging series; here a particular case is the discrete normal. Regions of validity are being studied. 11 refs.

Bowman, K.O. [Oak Ridge National Lab., TN (United States); Shenton, L.R. [Georgia Univ., Athens, GA (United States); Kastenbaum, M.A. [Kastenbaum (M.A.), Basye, VA (United States)

1991-11-01T23:59:59.000Z

355

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

SciTech Connect (OSTI)

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

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

2008-02-15T23:59:59.000Z

356

TYPE OF OPERATION  

Office of Legacy Management (LM)

Owner c:ontacted Owner c:ontacted TYPE OF OPERATION ----------------_ jJ Research & Development 0 Production scale testing Cl Pilot Scale 0 Bench Scale Process i Theoretical Studies Sample & Analysis B Production 0 Disposal/Storage $r Prime 0 Subcontract& 0 Purchase Order 0 Facility Type 0 Manufacturing 0 University 0 Research Organization a Other information (i.e., cost + fixed fern, unit price,' time & mate ~r~~-r~~tf~-_~_-_~-~f-~~J~ d ial, etc)_kl/Jlfits ---- -7---- -- Contract/Purchase Order # w?@7-e?-b $ 6, i;,_~~~~~----------------- - ----- C_O!!IF!KXYE-PEELEg: -lTlL-/L?~J --------------------------- OWNERSHXP: AEWHEC AEC/HED' GOVT GB' JT SiXiRACTOR CONiRkCiGR WEE LEAs_EE a!!!%? IEEE!? --------_ ..---LEASED ._ OWNED LANDS BUILDINGS EQUIPMENT

357

TYPE OF OPERATION  

Office of Legacy Management (LM)

OWNEF? (S) OWNEF? (S) Current: ____ LcrcJksLG! _________ Owner contacted n yes WI-IO; if yes, date contacted-- TYPE OF OPERATION ----_-------_---- m Research & Development Cl Pilot Scale Cl Disposal/Storaqe TYPE OF CDNTRACT ---__------__--- q Prime 0 Subcnntractor Cl Purchase Order 0 Other infcrmation (i.e., cnst + fixed fee, unit price, time 84 materi+, e.tc) v-7Y07-&G-W ---------------------------- Contract/Pur&aae Order # 0 -?+7- FJc-(CL --___--------~----_______________ CONTRACTING PEXIOD: fl& ,&I;'"'-?;': (&e-?)_-- ' ------------------ OWNERSHIP: AEC/MED GEC/MED SOVT GOVT CONTRACTOR CCNTRACTOR OWNE3 LEASE3 OWNE3 LEASED OWNE3 ----- ------ ----- ------ -__------- LE.352 LANDS u u q BUILDINGS EQUIPMENT 0 FINAL PRODUCT WASTE G RESIDUE a

358

TYPE OF OPERATION  

Office of Legacy Management (LM)

~~__--------_____ ~~__--------_____ q Research & Development q Production scale testing Cl Pilat Scale 0 Bench Scale Process 0 Theoretical Studies a Sample & Analysis c] Production 0 Disposal/Storage TYPE OF CONTRACT ~~__-------_--__ 0 Prime 0 Subcontractor 0 Purchase Order a d//F- a Faci 1 i ty Type a tlanuf acturi ng 0 University q Research Organization 0 Government Sponsored Facility a other --------------__----- Other information (i.e., cost + fixed fee, unit price, time & material, qtr) ------- -1------------------_L______ Contract/Purchase Order # CONTRACTING PE?IOD- 42 --------------L---- --------- ----------------_---______ OWNERSHIP: AEC/MED AEC/tlED OWNED ----- LE_A_sEE GOUT GO' JT CONTRACTOR E!!!!E!z LEASED - ----_ ---_OW_E!L LANDS BUILDINGS

359

Distribution System Research Priorities  

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

Mark McGranaghan Mark McGranaghan EPRI ELECTRICITY DISTRIBUTION SYSTEM WORKSHOP Crystal City, VA September 24, 2012 Distribution System Research Priorities 2 © 2012 Electric Power Research Institute, Inc. All rights reserved. The Power System Roadmaps start with a Vision Future Power System will require new technologies, infrastructure, and control systems 3 © 2012 Electric Power Research Institute, Inc. All rights reserved. R&D Roadmaps - Coordination is Critical Roadmaps are living documents 4 © 2012 Electric Power Research Institute, Inc. All rights reserved. Developing the next generation grid * Industry needs new technologies, communication protocols, and information management methods - More variable generation sources and controllable loads - Aging infrastructure

360

Early Type Galaxy Core Phase Densities  

E-Print Network [OSTI]

Early type galaxies, ellipticals and S0's, have two distinct core density profiles, either a power law or nearly flat in projection. The two core types are distributed with substantial overlap in luminosity, radius, mass and velocity dispersion, however, the cores separate into two distinct distributions in their coarse grain phase density, Q_0 = rho/sigma^3,suggesting that dynamical processes played a dominant role in their origin. The transition phase density separating the two elliptical types is approximately 0.003 M_sun pc^-3 km^-3 s^3,. The Q_0*M_c^2 vs M_c diagram shows that globular clusters, nuclear star clusters and power-law cores fall on what is likely a "collisional" sequence of inspiralling globular clusters. on which the relative core mass excess varies as the bulk stellar mass to the -0.34+/-0.08 power, close to predictions, albeit with a correlation coefficient of -0.46. Both power-law and cored galaxies lie on a single sequence of approximately Q_0 ~r_c^-2.2, suggesting that transport proces...

Carlbeg, Raymond

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Distributed Generation Technologies DGT | Open Energy Information  

Open Energy Info (EERE)

DGT DGT Jump to: navigation, search Name Distributed Generation Technologies (DGT) Place Ithaca, New York Zip 14850 Product Commercializing a technology to convert organic waste into pure and compressed methane gas via anaerobic digestion. Coordinates 39.93746°, -84.553194° 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":39.93746,"lon":-84.553194,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

362

Distributed Energy Systems Corp | Open Energy Information  

Open Energy Info (EERE)

Systems Corp Systems Corp Jump to: navigation, search Name Distributed Energy Systems Corp Place Wallingford, Connecticut Zip CT 06492 Product The former holding company of Proton Energy Systems and Northern Power Systems that ceased to operate upon the sale of both subsidiaries. Coordinates 43.473755°, -72.976925° 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":43.473755,"lon":-72.976925,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

364

Interdiffusion and free-boundary problem for r-component (r?2) one-dimensional mixtures showing constant concentration  

Science Journals Connector (OSTI)

The concept of separation of diffusional and drift flows, i.e., the postulate that the total mass flow is a sum of diffusion flux and translation only, is applied for the general case of diffusional transport in an r-component compound (process defined as interdiffusion in a one-dimensional mixture). The equations of local mass conservation (continuity equations), the appropriate expressions describing the fluxes (drift flux and diffusional flux), and momentum conservation equation (equation of motion) allow a complete quantitative description of diffusional transport process (in one-dimensional mixture showing constant concentration) to be formulated. The equations describing the interdiffusion process (mixing) in the general case where the components diffusivities vary with composition are derived. If certain regularity assumptions and a quantitative condition (concerning the diffusion coefficientsproviding a parabolic type of the final equation) are fulfilled, then there exists the unique solution of the interdiffusion problem. Good agreement between the numerical solution obtained with the use of Faedo-Galerkin method and experimental data is shown. An effective algebraic criterion allows us to determine the parabolic type of a particular problem. A condition for the up-hill diffusion in the three component mixture is given and a universal example of such effect is demonstrated. The results extend the standard Darken approach. The phenomenology allows the quantitative data on the dynamics of the processes to be obtained within an interdiffusion zone.

K. Holly and M. Danielewski

1994-11-01T23:59:59.000Z

365

Efficient distributed quantum computing  

Science Journals Connector (OSTI)

...model of a distributed quantum computer. As a result, the circuit...algorithms and the way that quantum computers are likely to be implemented...W.H. was funded by NSF grant nos 0916400, 0829937, 0803478...Large scale modular quantum computer architecture with atomic memory...

2013-01-01T23:59:59.000Z

366

Building diagnosable distributed systems  

E-Print Network [OSTI]

Building diagnosable distributed systems Petros Maniatis Intel Research Berkeley ICSI ­ Security] Project response@R (R, K, SI) lookup response Specification #12;2/8/2006 Petros Maniatis9 Strawman Design Join lookup.NI == node.NI Join lookup.NI == succ.NI Select K in (N, S] Project response@R (R, K, SI

Maniatis, Petros

367

Distribution and Market Share  

Science Journals Connector (OSTI)

Abstract This paper presents findings from a census of more than 79,000 stock-keeping units (SKUs) in 37 consumer packaged goods categories totaling $55 billion in annual revenue. It shows that, in 86 percent of product categories, the relationship between market share and retail distribution is increasing and convex at the SKU level. The degree of convexity is greater in categories with higher revenues and more concentration in market shares. The relationship is also typically convex within leading brands SKU portfolios, showing that the double jeopardy phenomenon of low share and distribution not only affects small brands competing against market leaders, it also affects low-share \\{SKUs\\} within a category leader's product line. Holdout evidence shows that the distribution/share relationship within a brand's portfolio of existing \\{SKUs\\} usually holds for new \\{SKUs\\} as well. We explain how knowledge of the distribution/share relationship can help to improve a brand's go-to-market decisions for new SKUs.

Kenneth C. Wilbur; Paul W. Farris

2014-01-01T23:59:59.000Z

368

Hottest spot temperatures in ventilated dry type transformers  

SciTech Connect (OSTI)

The hottest spot temperature allowance to be used for the different insulation system temperature classes is a major unknown facing IEEE Working Groups developing standards and loading guides for ventilated dry type transformers. In 1944, the hottest spot temperature allowance for ventilated dry type transformers was established as 30 C for 80 C average winding temperature rise. Since 1944, insulation temperature classes have increased to 220 C but IEEE standards continue to use a constant 30 C hottest spot temperature allowance. IEC standards use a variable hottest spot temperature allowance from 5 to 30 C. Six full size test windings were manufactured with imbedded thermocouples and 133 test runs performed to obtain temperature rise data. The test data indicated that the hottest spot temperature allowance used in IEEE standards for ventilated dry type transformers above 500 kVA is too low. This is due to the large thermal gradient from the bottom to the top of the windings caused by natural convection air flow through the cooling ducts. A constant ratio of hottest spot winding temperature rise to average winding temperature rise should be used in product standards for all insulation temperature classes. A ratio of 1.5 is suggested for ventilated dry type transformers above 500 kVA. This would increase the hottest spot temperature allowance from 30 C to 60 C and decrease the permissible average winding temperature rise from 150 C to 120 C for the 220 C insulation temperature class.

Pierce, L.W. (General Electric Co., Rome, GA (United States))

1994-01-01T23:59:59.000Z

369

Analytic Evolution of Singular Distribution Amplitudes in QCD  

SciTech Connect (OSTI)

We describe a method of analytic evolution of distribution amplitudes (DA) that have singularities, such as non-zero values at the end-points of the support region, jumps at some points inside the support region and cusps. We illustrate the method by applying it to the evolution of a flat (constant) DA, anti-symmetric at DA and then use it for evolution of the two-photon generalized distribution amplitude. Our approach has advantages over the standard method of expansion in Gegenbauer polynomials, which requires infinite number of terms in order to accurately reproduce functions in the vicinity of singular points, and over a straightforward iteration of an initial distribution with evolution kernel. The latter produces logarithmically divergent terms at each iteration, while in our method the logarithmic singularities are summed from the start, which immediately produces a continuous curve, with only one or two iterations needed afterwards in order to get rather precise results.

Radyushkin, Anatoly V. [Old Dominion University, Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Tandogan Kunkel, Asli [Old Dominion University, Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

2014-03-01T23:59:59.000Z

370

Characteristics of Vector Surge Relays for Distributed Synchronous Generator Protection  

SciTech Connect (OSTI)

This work presented a detailed investigation on the performance characteristics if vector surge relays to detect islanding of distributed synchronous generators. A detection time versus active power imbalance curve is proposed to evaluate the relay performance. Computer simulations are used to obtain the performance curves. The concept of critical active power imbalance is introduced based on these curves. Main factors affecting the performance of the relays are analyzed. The factors investigated are voltage-dependent loads, load power factor, inertia constant of the generator, generator excitation system control mode, feeder length and R/X ratio as well as multi-distributed generators. The results are a useful guideline to evaluate the effectiveness of anti-islanding schemes based on vector surge relays for distributed generation applications.

Freitas, Walmir; Xu, Wilsun; Huang, Zhenyu; Vieira, Jose C.

2007-02-28T23:59:59.000Z

371

Size distribution functions for rock fragments  

Science Journals Connector (OSTI)

Abstract The capacity of 17 functions to represent the size distribution of fragmented rock is assessed on 1234 data sets of screened fragments from blasted and crushed rock of different origins, of sizes ranging from 0.002 to 2000mm. The functions evaluated are Weibull, Grady, log-normal, log-logistic and Gilvarry, in their plain, re-scaled and bi-component forms, and also the Swebrec distribution and its bi-component extension. In terms of determination coefficient, the Weibull is the best two-parameter function for describing rock fragments, with a median R2 of 0.9886. Among re-scaled, three-parameter distributions, Swebrec and Weibull lead with median R2 values of 0.9976 and 0.9975, respectively. Weibull and Swebrec distributions tie again as best bi-component, with median R2 of 0.9993. Re-scaling generally reduces the unexplained variance by a factor of about four with respect to the plain function; bi-components further reduce this unexplained variance by a factor of about two to three. Size-prediction errors are calculated in four zones: coarse, central, fines and very fines. Expected and maximum errors in the different ranges are discussed. The extended Swebrec is the best fitting function across the whole passing range for most types of data. Bimodal Weibull and Grady distributions follow, except for the coarse range, where re-scaled forms are preferable. Considering the extra difficulty in fitting a five-parameter function with respect to a three-parameter one, re-scaled functions are the best choice if data do not extend far below 20% passing. If the focus is on the fine range, some re-scaled distributions may still do (Weibull, Swebrec and Grady, with maximum errors of 1520% at 8% passing), but serious consideration should be given to bi-component distributions, especially extended Swebrec, bimodal Weibull and bimodal Grady.

Jos A. Sanchidrin; Finn Ouchterlony; Pablo Segarra; Peter Moser

2014-01-01T23:59:59.000Z

372

Probabilistic and Resilient Distributed Architectures  

E-Print Network [OSTI]

projects for undergraduates that integrate multiple disciplines, e.g., protein folding and distributed

Heaton, Thomas H.

373

Distributed Acoustic and Seismic Sensing  

Science Journals Connector (OSTI)

An overview of fiber optic distributed acoustic and seismic sensor system architectures is presented.

Kirkendall, Clay

374

Distributed XML Design Serge Abiteboul  

E-Print Network [OSTI]

Distributed XML Design Serge Abiteboul INRIA Saclay ­ ?le-de-France & University Paris Sud, FR that a distribution design of the document tree is given, provid- ing an XML tree some of whose leaves are "docking.4 [Distributed Systems]: Distributed databases; H.2.1 [Logical Design]: Data models; Schema and subschema General

Paris-Sud XI, Université de

375

Distributed Energy Alternatives to Electrical  

E-Print Network [OSTI]

Distributed Energy Alternatives to Electrical Distribution Grid Expansion in Consolidated Edison.www.gastechnology.org 2 #12;Distributed Energy Alternatives to Electrical Distribution Grid Expansion in Consolidated-Battelle for the Department of Energy Subcontract Number: 4000052360 GTI Project Number: 20441 New York State Energy Research

Pennycook, Steve

376

TYPE OF OPERATION  

Office of Legacy Management (LM)

_---------_-- _---------_-- Research & Development 0 Production scale testing Cl Pilat Scale 0 Bench Scale Process 0 Theoretical Studies Cl Sample SC Analysis !J Production 0 Dis.posal/Storage 0 Prime ." 0 Subcontract& 0 Purchase Order 0 Facility Type 0 Manufacturing 0 University 0 Research Org&ization 0 Government Sponsored Facility Cl Other ---------_---__-____- Other information (i.e., cost + fixed fee, unit price, time & material, gtr) Coni+act/Purchase Order # ---------------------_--_________ C!2kEE~_CIL_N_G-EE~LE~: /5J--L-,r4 53 -------------------------------------- OWNERSHIP: AEC/MED AEC/MED GOVT GOVT CONTRACTOR CONTRACTOR !w!!E? ___--- " EWNED LEASED L_EesEE OWNED LEASED ---------_ --_------ LANDS BUILDINGS ' EQUIPMENT

377

Rate types for stream programs  

Science Journals Connector (OSTI)

We introduce RATE TYPES, a novel type system to reason about and optimize data-intensive programs. Built around stream languages, RATE TYPES performs static quantitative reasoning about stream rates -- the frequency of data items in a stream being ... Keywords: data processing rates, data throughput, performance reasoning, stream programming, type systems

Thomas W. Bartenstein, Yu David Liu

2014-10-01T23:59:59.000Z

378

Molecular Simulation of Henry's Constant at Vapor-Liquid and Liquid-Liquid Phase Richard J. Sadus  

E-Print Network [OSTI]

coexistence. 1. Introduction Henry's constant is a well-known measure of a solute's solubility in a particularMolecular Simulation of Henry's Constant at Vapor-Liquid and Liquid-Liquid Phase Boundaries Richard to determine Henry's constant from the residual chemical potential at infinite dilution at the vapor-liquid

379

Handbook of Physical Constants Edited by S. P. Clarke, Jr. (Geological Society of America, $8.75)  

Science Journals Connector (OSTI)

......book-review Book Reviews Handbook of Physical Constants Edited...8.75) T. F. Gaskell Handbook of Physical Constants S. P...polarization. J. M. BRUCKSHAW Handbook of Physical Constants Edited...Earth Science library which does not already have this classic......

T. F. Gaskell

1967-06-01T23:59:59.000Z

380

Economical method for the determination of group constants for reactor lattices  

SciTech Connect (OSTI)

The development of an economical method for determining accurately group constants of hexagonal and rectangular cells is considered in this dissertation. The mathematical model constructed for this purpose has the capability to characterize the group constants for the entire range of the neutron spectrum. Furthermore, this model is also rigorous enough to predict the group constants with the required accuracy for a specific range of interest in the energy spectrum and for a variety of energy group configurations. The group constants calculated wih the economical model have been benchmarked with those computed by the VIM Monte Carlo code. The values obtained for the group constants agree within 1-2% with those computed by VIM for the fast energy region. The agreements for the thermal energy region are within 2-3%. The CPU running time of the implemented model is about 3 1/2 minutes for a four group configuration. On the other hand a typical VIM run comprising 25,000 neutron histories and a four-group structure expends about 30 minutes of CPU time for light water moderated systems. Moreover, similar VIM runs utilizing heavy water as moderator require over one hour of CPU time. Therefore, the implemented model makes utilization of computer resources with a cost advantage of a factor of 10 or better as compared to VIM.

Rogow, R.

1984-01-01T23:59:59.000Z

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


381

DA (Distribution Automation) (Smart Grid Project) | Open Energy Information  

Open Energy Info (EERE)

DA (Distribution Automation) (Smart Grid Project) DA (Distribution Automation) (Smart Grid Project) Jump to: navigation, search Project Name DA (Distribution Automation) Country Netherlands Coordinates 52.132633°, 5.291266° 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":52.132633,"lon":5.291266,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

382

Distributed connected wind farms (Smart Grid Project) (Limerick, Ireland) |  

Open Energy Info (EERE)

Distributed connected wind farms (Smart Grid Project) (Limerick, Ireland) Distributed connected wind farms (Smart Grid Project) (Limerick, Ireland) Jump to: navigation, search Project Name Distributed connected wind farms Country Ireland Headquarters Location Limerick, Ireland Coordinates 52.663857°, -8.626773° 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":52.663857,"lon":-8.626773,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

383

Method of preparing mercury with an arbitrary isotopic distribution  

DOE Patents [OSTI]

This invention provides for a process for preparing mercury with a predetermined, arbitrary, isotopic distribution. In one embodiment, different isotopic types of Hg[sub 2]Cl[sub 2], corresponding to the predetermined isotopic distribution of Hg desired, are placed in an electrolyte solution of HCl and H[sub 2]O. The resulting mercurous ions are then electrolytically plated onto a cathode wire producing mercury containing the predetermined isotopic distribution. In a similar fashion, Hg with a predetermined isotopic distribution is obtained from different isotopic types of HgO. In this embodiment, the HgO is dissolved in an electrolytic solution of glacial acetic acid and H[sub 2]O. The isotopic specific Hg is then electrolytically plated onto a cathode and then recovered. 1 fig.

Grossman, M.W.; George, W.A.

1986-12-16T23:59:59.000Z

384

Method of preparing mercury with an arbitrary isotopic distribution  

DOE Patents [OSTI]

This invention provides for a process for preparing mercury with a predetermined, arbitrary, isotopic distribution. In one embodiment, different isotopic types of Hg.sub.2 Cl.sub.2, corresponding to the predetermined isotopic distribution of Hg desired, are placed in an electrolyte solution of HCl and H.sub.2 O. The resulting mercurous ions are then electrolytically plated onto a cathode wire producing mercury containing the predetermined isotopic distribution. In a similar fashion, Hg with a predetermined isotopic distribution is obtained from different isotopic types of HgO. In this embodiment, the HgO is dissolved in an electrolytic solution of glacial acetic acid and H.sub.2 O. The isotopic specific Hg is then electrolytically plated onto a cathode and then recovered.

Grossman, Mark W. (Belmont, MA); George, William A. (Rockport, MA)

1986-01-01T23:59:59.000Z

385

Geothermal: Distributed Search Help  

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

Search Help Search Help Geothermal Technologies Legacy Collection Help/FAQ | Site Map | Contact Us | Admin Log On Home/Basic Search About Publications Advanced Search New Hot Docs News Related Links Distributed Search Help Table of Contents General Information Search More about Searching Browse the Geothermal Legacy Collection Obtaining Documents Contact Us General Information The Distributed Search provides a searchable gateway that integrates diverse geothermal resources into one location. It accesses databases of recent and archival technical reports in order to retrieve specific geothermal information - converting earth's energy into heat and electricity, and other related subjects. See About, Help/FAQ, Related Links, or the Site Map, for more information about the Geothermal Technologies Legacy Collection .

386

MEMORANDUM FOR DISTRIBUTION  

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

DISTRIBUTION DISTRIBUTION (;7 FROM: SUBJECT The purpose of this memorandum is to revise the discretionary set-aside authority addressed on Page 13 of Acquisition Letter 2004-03 from $50,000 to $100,000. The paragraph entitled, Discretionary Set-Asides, is revised to read: "Contractors responsible for the management and operation of sites and facilities are authorized to set aside purchases at any dollar value for award to small businesses and to make purchases valued up to $100,000 on a sole source basis to small businesses. If such programs are instituted, the contractor shall assure that awards are to be made at fair market prices." If you have any questions on this subject, please contact Stephen Zvolensky of my staff at (202) 287-1307. Department of Energy

387

Distributed Energy Fuel Cells  

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

Energy Fuel Cells Energy Fuel Cells DOE Hydrogen DOE Hydrogen and and Fuel Cells Fuel Cells Coordination Meeting Fuel Cell Coordination Meeting June 2-3, 2003 Electricity Users Kathi Epping Kathi Epping Objectives & Barriers Distributed Energy OBJECTIVES * Develop a distributed generation PEM fuel cell system operating on natural gas or propane that achieves 40% electrical efficiency and 40,000 hours durability at $400-750/kW by 2010. BARRIERS * Durability * Heat Utilization * Power Electronics * Start-Up Time Targets and Status Integrated Stationary PEMFC Power Systems Operating on Natural Gas or Propane Containing 6 ppm Sulfur 40,000 30,000 15,000 Hours Durability 750 1,250 2,500 $/kWe Cost 40 32 30 % Electrical Efficiency Large (50-250 kW) Systems 40,000 30,000 >6,000 Hours Durability 1,000 1,500 3,000

388

Ken Bettridge Distributing, Inc.  

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

7, 2002 7, 2002 DECISION AND ORDER OF THE DEPARTMENT OF ENERGY Application for Exception Name of Petitioner: Ken Bettridge Distributing, Inc. Case Number: VEE-0083 Date of Filing: February 28, 2002 On February 28, 2002, Ken Bettridge Distributing, Inc. (Bettridge) of Cedar City, Utah, filed an Application for Exception with the Office of Hearings and Appeals (OHA) of the Department of Energy (DOE). In its application, Bettridge requests that it be temporarily relieved of the requirement to prepare and file the Energy Information Administration's (EIA) form entitled "Resellers'/Retailers' Monthly Petroleum Product Sales Report" (Form EIA-782B). As explained below, we have concluded that Bettridge shall be excused from filing Form EIA-782B for one year.

389

Dissecting the Gravitational Lens B1608 656. II. Precision Measurements of the Hubble Constant, Spatial Curvature, and the Dark Energy Equation of State  

SciTech Connect (OSTI)

Strong gravitational lens systems with measured time delays between the multiple images provide a method for measuring the 'time-delay distance' to the lens, and thus the Hubble constant. We present a Bayesian analysis of the strong gravitational lens system B1608+656, incorporating (1) new, deep Hubble Space Telescope (HST) observations, (2) a new velocity dispersion measurement of 260 {+-} 15 km s{sup -1} for the primary lens galaxy, and (3) an updated study of the lens environment. Our analysis of the HST images takes into account the extended source surface brightness, and the dust extinction and optical emission by the interacting lens galaxies. When modeling the stellar dynamics of the primary lens galaxy, the lensing effect, and the environment of the lens, we explicitly include the total mass distribution profile logarithmic slope {gamma}{prime} and the external convergence {kappa}{sub ext}; we marginalize over these parameters, assigning well-motivated priors for them, and so turn the major systematic errors into statistical ones. The HST images provide one such prior, constraining the lens mass density profile logarithmic slope to be {gamma}{prime} = 2.08 {+-} 0.03; a combination of numerical simulations and photometric observations of the B1608+656 field provides an estimate of the prior for {kappa}{sub ext}: 0.10{sub -0.05}{sup +0.08}. This latter distribution dominates the final uncertainty on H{sub 0}. Fixing the cosmological parameters at {Omega}{sub m} = 0.3, {Omega}{sub {Lambda}} = 0.7, and w = -1 in order to compare with previous work on this system, we find H{sub 0} = 70.6{sub -3.1}{sup +3.1} km s{sup -1} Mpc{sup -1}. The new data provide an increase in precision of more than a factor of two, even including the marginalization over {kappa}{sub ext}. Relaxing the prior probability density function for the cosmological parameters to that derived from the WMAP 5-year data set, we find that the B1608+656 data set breaks the degeneracy between {Omega}{sub m} and {Omega}{sub {Lambda}} at w = -1 and constrains the curvature parameter to be -0.031 < {Omega}{sub k} < 0.009 (95% CL), a level of precision comparable to that afforded by the current Type Ia SNe sample. Asserting a flat spatial geometry, we find that, in combination with WMAP, H{sub 0} = 69.7{sub 5.0}{sup +4.9} km s{sup -1} Mpc{sup -1} and w = -0.94{sub -0.19}{sup +0.17} (68% CL), suggesting that the observations of B1608+656 constrain w as tightly as do the current Baryon Acoustic Oscillation data.

Suyu, S.H.; /Argelander Inst. Astron.; Marshall, P.J.; /KIPAC, Menlo Park /UC, Santa Barbara; Auger, M.W.; /UC, Santa Barbara /UC, Davis; Hilbert, S.; /Argelander Inst. Astron. /Garching, Max Planck Inst.; Blandford, R.D.; /KIPAC, Menlo Park; Koopmans, L.V.E.; /Kapteyn Astron. Inst., Groningen; Fassnacht, C.D.; /UC, Davis; Treu, T.; /UC, Santa Barbara

2009-12-11T23:59:59.000Z

390

Symmetric generalized binomial distributions  

SciTech Connect (OSTI)

In two recent articles, we have examined a generalization of the binomial distribution associated with a sequence of positive numbers, involving asymmetric expressions of probabilities that break the symmetry win-loss. We present in this article another generalization (always associated with a sequence of positive numbers) that preserves the symmetry win-loss. This approach is also based on generating functions and presents constraints of non-negativeness, similar to those encountered in our previous articles.

Bergeron, H. [Univ Paris-Sud, ISMO, UMR 8214, 91405 Orsay (France)] [Univ Paris-Sud, ISMO, UMR 8214, 91405 Orsay (France); Curado, E. M. F. [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil) [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil); Instituto Nacional de Cincia e Tecnologia - Sistemas Complexos, Rua Xavier Sigaud 150, 22290-180 - Rio de Janeiro, RJ (Brazil); Gazeau, J. P. [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil) [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil); APC, UMR 7164, Univ Paris Diderot, Sorbonne Paris Cit, 75205 Paris (France); Rodrigues, Ligia M. C. S., E-mail: herve.bergeron@u-psud.fr, E-mail: evaldo@cbpf.br, E-mail: gazeau@apc.univ-paris7.fr, E-mail: ligia@cbpf.br [Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150 22290-180 - Rio de Janeiro (Brazil)

2013-12-15T23:59:59.000Z

391

Mapping Biomass Distribution Potential  

E-Print Network [OSTI]

Mapping Biomass Distribution Potential Michael Schaetzel Undergraduate ? Environmental Studies ? University of Kansas L O C A T S I O N BIOMASS ENERGY POTENTIAL o According to DOE, Biomass has the potential to provide 14% of... the nations power o Currently 1% of national power supply o Carbon neutral? combustion of biomass is part of the natural carbon cycle o Improved crop residue management has potential to benefit environment, producers, and economy Biomass Btu...

Schaetzel, Michael

2010-11-18T23:59:59.000Z

392

g-Factor of Heavy Ions: A New Access to the Fine Structure Constant  

SciTech Connect (OSTI)

A possibility for a determination of the fine structure constant in experiments on the bound-electron g-factor is examined. It is found that studying a specific difference of the g-factors of B- and H-like ions of the same spinless isotope in the Pb region to the currently accessible experimental accuracy of 7x10{sup -10} would lead to a determination of the fine structure constant to an accuracy which is better than that of the currently accepted value. Further improvements of the experimental and theoretical accuracy could provide a value of the fine structure constant which is several times more precise than the currently accepted one.

Shabaev, V.M. [Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198504 (Russian Federation); Gesellschaft fuer Schwerionenforschung, Planckstrasse 1, D-64291 Darmstadt (Germany); Glazov, D.A.; Oreshkina, N.S. [Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198504 (Russian Federation); Volotka, A.V. [Department of Physics, St. Petersburg State University, Oulianovskaya 1, Petrodvorets, St. Petersburg 198504 (Russian Federation); Institut fuer Theoretische Physik, TU Dresden, Mommsenstrasse 13, D-01062 Dresden (Germany); Plunien, G. [Institut fuer Theoretische Physik, TU Dresden, Mommsenstrasse 13, D-01062 Dresden (Germany); Kluge, H.-J.; Quint, W. [Gesellschaft fuer Schwerionenforschung, Planckstrasse 1, D-64291 Darmstadt (Germany)

2006-06-30T23:59:59.000Z

393

The Cosmological Constant of One-Dimensional Matter Coupled Quantum Gravity is Quantized  

E-Print Network [OSTI]

Coupling any interacting quantum mechanical system to gravity in one dimension requires the cosmological constant to belong to the matter energy spectrum and thus to be quantized, even though the gravity sector is free of any quantum dynamics, while physical states are also confined to the subspace of matter quantum states whose energy coincides with the cosmological constant value. These general facts are illustrated through some simple examples. The physical projector quantization approach readily leads to the correct representation of such systems, whereas other approaches relying on gauge fixing methods are often plagued by Gribov problems in which case the quantization rule is not properly recovered. Whether such a quantization of the cosmological constant as well as the other ensuing consequences in terms of physical states extend to higher dimensional matter-gravity coupled quantum systems is clearly a fascinating open issue.

Govaerts, J

2002-01-01T23:59:59.000Z

394

Complex Dielectric Constant of KH2PO4 at 9.2 Gc/sec  

Science Journals Connector (OSTI)

The temperature dependence of the dielectric constant and loss tangent in potassium dihydrogen phosphate along and normal to the optic axis has been measured by a cavity perturbation method at 9.2 Gc/sec. The dielectric constants agree with earlier low-frequency measurements. The parallel dielectric constant exhibits a modified Curie-Weiss behavior which may be described by (T-Tc)?c?=A?+BT, with Tc=119 K, A?=2.27103 K, B=4.7. The parallel loss tangent also has an approximate Curie-Weiss dependence which may be described by (T-Tc)tan?c=?+?T+?T2, with ?=8.4210-1 K, ?=-9.4910-4, and ?=8.4910-6 (K)-1. This result is discussed in terms of Silverman's treatment of the microwave loss in strontium titanate. The implications of these measurements for microwave light modulation are also discussed.

I. P. Kaminow and G. O. Harding

1963-02-15T23:59:59.000Z

395

Dynamical friction in constant density cores: a failure of the Chandrasekhar formula  

E-Print Network [OSTI]

Using analytic calculations and N-body simulations we show that in constant density (harmonic) cores, sinking satellites undergo an initial phase of very rapid (super-Chandrasekhar) dynamical friction, after which they experience no dynamical friction at all. For density profiles with a central power law profile of log-slope, $-\\alpha$, the infalling satellite heats the background and causes $\\alpha$ to decrease. For $\\alpha < 0.5$ initially, the satellite generates a small central constant density core and stalls as in the $\\alpha = 0$ case. We discuss some astrophysical applications of our results to decaying satellite orbits, galactic bars and mergers of supermassive black hole binaries. In a companion paper we show that a central constant density core can provide a natural solution to the timing problem for Fornax's globular clusters.

J. I. Read; Tobias Goerdt; Ben Moore; A. P. Pontzen; Joachim Stadel; George Lake

2006-06-26T23:59:59.000Z

396

Coupling constant metamorphosis and Nth order symmetries in classical and quantum mechanics  

E-Print Network [OSTI]

We review the fundamentals of coupling constant metamorphosis (CCM) and the St\\"ackel transform, and apply them to map integrable and superintegrable systems of all orders into other such systems on different manifolds. In general, CCM does not preserve the order of constants of the motion or even take polynomials in the momenta to polynomials in the momenta. We study specializations of these actions which do preserve polynomials and also the structure of the symmetry algebras in both the classical and quantum cases. We give several examples of non-constant curvature 3rd and 4th order superintegrable systems in 2 space dimensions obtained via CCM, with some details on the structure of the symmetry algebras preserved by the transform action.

E. G. Kalnins; W. Miller Jr.; S. Post

2009-08-31T23:59:59.000Z

397

Our Knowledge of the Fundamental Constants of Physics and Chemistry in 1965  

Science Journals Connector (OSTI)

Experimental data bearing on the precision determination of the numerical values of the fundamental physical constants are reviewed, with particular emphasis being placed on the identification and isolation of discrepancies and inconsistencies. The purpose of the analysis is to present a consistent set of values of the fundamental constants and to present a careful and complete description of the steps taken to reach this end. The Introduction discusses the significance of such an analysis and indicates the general method of approach. The indispensability of local unit systems and conversion factors connecting them, in order to avoid a sacrifice of precision peculiar to different metrological techniques, is emphasized. The point is stressed that conversion constants introduce the danger of ignoring error-statistical correlations between physically measured quantities, and the effects of such correlations on the assignment of errors is discussed. All available sources of experimental information relative to the necessary input data are presented, and changes in definitions of units since our last review are discussed. After the available stochastic input data have been reviewed and the less reliable items eliminated, the third section examines the remainder for mutual compatibility by means of an analysis of variance in which special criteria for recognizing the incompatibility of a datum are developed, using the analogy of the energy of internal strain introduced in overdetermined mechanical structures. Tables of least-squares adjusted values of fundamental constants and conversion factors of physics and chemistry based on the 1963 adjustment are given. Research pertinent to the constants which has been completed or published subsequent to the 1963 "recommended" adjustment is discussed, and the effect of these on our knowledge of the numerical values of the fundamental constants is presented.

E. RICHARD COHEN and JESSE W. M. DuMOND

1965-10-01T23:59:59.000Z

398

TYPE OF OPERATION  

Office of Legacy Management (LM)

----------------- ----------------- 0 Research & Development .a Production scale testing 0 Pilat Scale 0 Bench Scale Process 0 Thearetical Studies Cl Sample 84 Analysis 0 Production *i DiaposalKitorage Cl Facility Tybe q Government Sponsored Facility Other R.L- 6:e 14 1 1 ---------- --------- I I I TYPE OF CONTRACT ~-__-----------_ fl Prime *I 0 Subcantractbr Other infuriation (i.e., L.t + fixed fee, kit price, 0 Purchase Order time k mat*iik, gtc) /I -~---------'-t-----------~- ----------II---------------- Contract/Purchase Order # I EP!EBEII!G-PEEI9E: ---------------------------------~---- , OWNERSHiP: : I I j ,' / 1 AEC/tlED AEC/MED GOUT GOUT E!!NE_D LEASEI! !z%!NE_D CONTTACTOR CONTf?qCTOR LEASE?? ---w!En- ---LEL3SEI! i I I I LANDS BUILDINGS EIXIIPMENT

399

TYPE OF OPERATION  

Office of Legacy Management (LM)

______ ______ 0 Research & Development 9 Faciiity Type 0 Production scale testing Cl Pilot Scale 0 Bench Scale Process 0 Theoretical Studies Cl Sample 84 Analysis Production Di aposal /Storage g ;E:"V',;=:;;';"" IJ Research Organization 0 Government Sponeored Facility q Other --------------------- 0 Prime q ,@ Subcontract& Other information (i.e., cost 0 Purchase Order + fixed fee, unit price, time ?8 material, etc) -------mm----+------------- Contract/Purchase Order # CONTRACTING PERIODr c&L&.& rqs-z i i -----~_--~~~_----_ -------------------------------------- OWNERSHIP8 CIEC/tlED CIEC/MED GOUT WNED LE&xU _o!!EED LANDS BUILDINGS EQUIPMENT iii E : ORE OR RAW MATL IJ : E FINCIL PRODUCT [7 WCISTE b RESIDUE q GOUT

400

GASIFICATION FOR DISTRIBUTED GENERATION  

SciTech Connect (OSTI)

A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

2000-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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401

Generation of SFR few-group constants using the Monte Carlo code Serpent  

SciTech Connect (OSTI)

In this study, the Serpent Monte Carlo code was used as a tool for preparation of homogenized few-group cross sections for the nodal diffusion analysis of Sodium cooled Fast Reactor (SFR) cores. Few-group constants for two reference SFR cores were generated by Serpent and then employed by nodal diffusion code DYN3D in 2D full core calculations. The DYN3D results were verified against the references full core Serpent Monte Carlo solutions. A good agreement between the reference Monte Carlo and nodal diffusion results was observed demonstrating the feasibility of using Serpent for generation of few-group constants for the deterministic SFR analysis. (authors)

Fridman, E.; Rachamin, R. [Helmholz-Zentrum Dresden-Rossendorf, POB 510119, Dresden, 01314 (Germany); Shwageraus, E. [Ben-Gurion University, POB 653, 84105 Beer-Sheva (Israel)

2013-07-01T23:59:59.000Z

402

Influence of the cosmological constant on gravitational lensing in small systems  

SciTech Connect (OSTI)

The cosmological constant {lambda} affects gravitational lensing phenomena. The contribution of {lambda} to the observable angular positions of multiple images and to their amplification and time delay is here computed through a study of the weak deflection limit of the equations of motion in the Schwarzschild-de Sitter metric. Because of {lambda} the unresolved images are slightly demagnified, the radius of the Einstein ring decreases, and the time delay increases. The effect is however negligible for near lenses. In the case of a null cosmological constant, we provide some updated results on lensing by a Schwarzschild black hole.

Sereno, Mauro [Institut fuer Theoretische Physik, Universitaet Zuerich, Winterthurerstrasse 190, CH-8057 Zurich (Switzerland)

2008-02-15T23:59:59.000Z

403

Influence of the cosmological constant on gravitational lensing in small systems  

Science Journals Connector (OSTI)

The cosmological constant ? affects gravitational lensing phenomena. The contribution of ? to the observable angular positions of multiple images and to their amplification and time delay is here computed through a study of the weak deflection limit of the equations of motion in the SchwarzschilddeSitter metric. Because of ? the unresolved images are slightly demagnified, the radius of the Einstein ring decreases, and the time delay increases. The effect is however negligible for near lenses. In the case of a null cosmological constant, we provide some updated results on lensing by a Schwarzschild black hole.

Mauro Sereno

2008-02-15T23:59:59.000Z

404

Low red-shift formula for the luminosity distance in a LTB model with cosmological constant  

E-Print Network [OSTI]

We calculate the low red-shift Taylor expansion for the luminosity distance for an observer at the center of a spherically symmetric matter inhomogeneity with a non vanishing cosmological constant. We then test the accuracy of the formulas comparing them to the numerical calculation for different cases for both the luminosity distance and the radial coordinate. The formulas can be used as a starting point to understand the general non linear effects of a local inhomogeneity in presence of a cosmological constant, without making any special assumption about the inhomogeneity profile.

Antonio Enea Romano; Pisin Chen

2014-05-08T23:59:59.000Z

405

Electronic constant current and current pulse signal generator for nuclear instrumentation testing  

DOE Patents [OSTI]

Circuitry is described for testing the ability of an intermediate range nuclear instrument to detect and measure a constant current and a periodic current pulse. The invention simulates the resistance and capacitance of the signal connection of a nuclear instrument ion chamber detector and interconnecting cable. An LED flasher/oscillator illuminates an LED at a periodic rate established by a timing capacitor and circuitry internal to the flasher/oscillator. When the LED is on, a periodic current pulse is applied to the instrument. When the LED is off, a constant current is applied. An inductor opposes battery current flow when the LED is on. 1 figures.

Brown, R.A.

1994-04-19T23:59:59.000Z

406

Is the zero-point energy a source of the cosmological constant?  

E-Print Network [OSTI]

We discuss how we remove a huge discrepancy between the theory of a cosmological constant, due to the zero-point energies of matter fields, and the observation. The technique of dimensional regularization plays a decisive role. We eventually reach the desired behavior of the vacuum densities falling off like t^{-2}, allowing us to understand how an extremely small result comes about naturally. As a price, however, the zero-point energy vacuum fails to act as a true cosmological constant. Its expected role responsible for the observed accelerating universe is then to be inherited by the gravitational scalar field, dark energy, as we suggest in the scalar-tensor theory.

Fujii, Yasunori

2014-01-01T23:59:59.000Z

407

Is the zero-point energy a source of the cosmological constant?  

E-Print Network [OSTI]

We discuss how we remove a huge discrepancy between the theory of a cosmological constant, due to the zero-point energies of matter fields, and the observation. The technique of dimensional regularization plays a decisive role. We eventually reach the desired behavior of the vacuum densities falling off like t^{-2}, allowing us to understand how an extremely small result comes about naturally. As a price, however, the zero-point energy vacuum fails to act as a true cosmological constant. Its expected role responsible for the observed accelerating universe is then to be inherited by the gravitational scalar field, dark energy, as we suggest in the scalar-tensor theory.

Yasunori Fujii

2014-03-15T23:59:59.000Z

408

Electronic constant current and current pulse signal generator for nuclear instrumentation testing  

DOE Patents [OSTI]

Circuitry for testing the ability of an intermediate range nuclear instrut to detect and measure a constant current and a periodic current pulse. The invention simulates the resistance and capacitance of the signal connection of a nuclear instrument ion chamber detector and interconnecting cable. An LED flasher/oscillator illuminates an LED at a periodic rate established by a timing capacitor and circuitry internal to the flasher/oscillator. When the LED is on, a periodic current pulse is applied to the instrument. When the LED is off, a constant current is applied. An inductor opposes battery current flow when the LED is on.

Brown, Roger A. (Amsterdam, NY)

1994-01-01T23:59:59.000Z

409

Superselection rule for the cosmological constant in three-dimensional spacetime  

E-Print Network [OSTI]

Efforts to understand the origin of the cosmological constant {\\Lambda} and its observed value have led to consider it as a dynamical field rather than as a universal constant. Then the possibility arises that the universe, or regions of it, might be in a superposition of quantum states with different values of {\\Lambda}, so that its actual value would not be definite. There appears to be no argument to rule out this possibility for a generic spacetime dimension D. However, as proved herein, for D=3 there exists a superselection rule that forbids such superpositions. The proof is based on the asymptotic symmetry algebra.

Bunster, Claudio

2014-01-01T23:59:59.000Z

410

Thermal distribution systems in commercial buildings  

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

Thermal distribution systems in commercial buildings Thermal distribution systems in commercial buildings Title Thermal distribution systems in commercial buildings Publication Type Journal Article LBNL Report Number LBNL-51860 Year of Publication 2003 Authors Diamond, Richard C., Craig P. Wray, Darryl J. Dickerhoff, Nance Matson, and Duo Wang Start Page Chapter Abstract Previous research suggests that HVAC thermal distribution systems in commercial buildings suffer from thermal losses, such as those caused by duct air leakage and poor duct location. Due to a lack of metrics and data showing the potentially large energy savings from reducing these losses, the California building industry has mostly overlooked energy efficiency improvements in this area. The purpose of this project is to obtain the technical knowledge needed to properly measure and understand the energy efficiency of these systems. This project has three specific objectives: to develop metrics and diagnostics for determining system efficiencies, to develop design and retrofit information that the building industry can use to improve these systems, and to determine the energy impacts associated with duct leakage airflows in an existing large commercial building. The primary outcome of this project is the confirmation that duct leakage airflows can significantly impact energy use in large commercial buildings: our measurements indicate that adding 15% duct leakage at operating conditions leads to an increase in fan power of about 25 to 35%. This finding is consistent with impacts of increased duct leakage airflows on fan power that have been predicted by previous simulations. Other project outcomes include the definition of a new metric for distribution system efficiency, the demonstration of a reliable test for determining duct leakage airflows, and the development of new techniques for duct sealing. We expect that the project outcomes will lead to new requirements for commercial thermal distribution system efficiency in future revisions of California's Title 24.

411

Distributed Intelligent Agents for Decision Making at Local Distributed  

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

Distributed Intelligent Agents for Decision Making at Local Distributed Distributed Intelligent Agents for Decision Making at Local Distributed Energy Resource (DER) Levels Speaker(s): David Cohen Date: June 3, 2005 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Peng Xu Our goals are to develop and commercialize a system of adaptive, intelligent software components which run at distributed locations (DER-level) on the energy network to improve the reliability, efficiency, and security of the U.S. electrical distribution network. We are developing GridAgents, an enabling software technology framework and platform using a distributed multi-agent systems approach for advanced communications and control capabilities (large- scale automated demand response, distribution automation control, and Microgrid control applications). For more

412

Numerical Study on Exergy Losses of n-Heptane Constant-Volume Combustion by Detailed Chemical Kinetics  

Science Journals Connector (OSTI)

A trade-off relation between exergy loss and incomplete conversion loss was also observed, and ways to reduce the total loss of combustion processes were determined by investigating the influences of multiple parameters on loss distributions. ... Szybist et al.(30) had modified the traditional calculation of the Otto cycle efficiency to better account for composition differences during each stage of the ideal cycle, and the work term of the cycle can be computed by eq 15:(15)where ?h is the lower heating value of the fuel, ? is the ratio of specific heat, CV is the specific heat at constant volume, and subscripts R and P represent reactants and products, respectively. ... For Case 3 and Case 4, preheating will increase the in-cylinder temperatures, resulting in the reduced ratio of specific heat; thus, as shown in Figure 7, from Case 2 to Case 4, the increase in ?2nd is less than the decrease in total losses because of the deterioration in the work-extraction efficiency caused by the lower ratio of specific heat. ...

Feng Yan; Wanhua Su

2014-09-05T23:59:59.000Z

413

Orchestrating Distributed Resource Ensembles for Petascale Science  

SciTech Connect (OSTI)

Distributed, data-intensive computational science applications of interest to DOE scientific com- munities move large amounts of data for experiment data management, distributed analysis steps, remote visualization, and accessing scientific instruments. These applications need to orchestrate ensembles of resources from multiple resource pools and interconnect them with high-capacity multi- layered networks across multiple domains. It is highly desirable that mechanisms are designed that provide this type of resource provisioning capability to a broad class of applications. It is also important to have coherent monitoring capabilities for such complex distributed environments. In this project, we addressed these problems by designing an abstract API, enabled by novel semantic resource descriptions, for provisioning complex and heterogeneous resources from multiple providers using their native provisioning mechanisms and control planes: computational, storage, and multi-layered high-speed network domains. We used an extensible resource representation based on semantic web technologies to afford maximum flexibility to applications in specifying their needs. We evaluated the effectiveness of provisioning using representative data-intensive ap- plications. We also developed mechanisms for providing feedback about resource performance to the application, to enable closed-loop feedback control and dynamic adjustments to resource allo- cations (elasticity). This was enabled through development of a novel persistent query framework that consumes disparate sources of monitoring data, including perfSONAR, and provides scalable distribution of asynchronous notifications.

Baldin, Ilya; Mandal, Anirban; Ruth, Paul; Yufeng, Xin

2014-04-24T23:59:59.000Z

414

Safety of Gas Transmission and Distribution Systems (Maine) | Department of  

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

Safety of Gas Transmission and Distribution Systems (Maine) Safety of Gas Transmission and Distribution Systems (Maine) Safety of Gas Transmission and Distribution Systems (Maine) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Maine Program Type Safety and Operational Guidelines Provider Public Utilities Commission These regulations describe requirements for the participation of natural gas utilities in the Underground Utility Damage Prevention Program,

415

New Construction of Distribution Lines, Service Lines, and Appurtenant  

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

Construction of Distribution Lines, Service Lines, and Construction of Distribution Lines, Service Lines, and Appurtenant Facilities in Residential Subdivisions (New York) New Construction of Distribution Lines, Service Lines, and Appurtenant Facilities in Residential Subdivisions (New York) < Back Eligibility Commercial Installer/Contractor Institutional Investor-Owned Utility Low-Income Residential Multi-Family Residential Municipal/Public Utility Residential Rural Electric Cooperative Schools Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Home Weatherization Water Buying & Making Electricity Solar Wind Program Info State New York Program Type Siting and Permitting Provider New York State Public Service Commission Any proposed construction of electricity-related facilities in residential

416

Fragment Mass Distribution of Platelike Objects  

SciTech Connect (OSTI)

The fragment mass distributions of platelike objects are investigated by conducting two types of experiments. The first is a {open_quotes}sandwich{close_quote}{close_quote} experiment in which thin glass and plaster plates are inserted between two larger stainless steel plates and an iron projectile is dropped onto the target plate at normal incidence. The second is a {open_quotes}lateral impact{close_quote}{close_quote} experiment in which a hypervelocity nylon projectile collides at the side of the plaster plates. There is a discrepancy in the power-law exponent of fragment mass distribution between the sandwich experiment and the lateral impact experiment. A model that agrees with the experimental results is proposed. {copyright} {ital 1997} {ital The American Physical Society}

Kadono, T. [Institute of Space and Astronautical Science, Kanagawa 229 (Japan)] [Institute of Space and Astronautical Science, Kanagawa 229 (Japan); [and Department of Physics, Kyoto University, Kyoto 606 (Japan)

1997-02-01T23:59:59.000Z

417

New model for nucleon generalized parton distributions  

SciTech Connect (OSTI)

We describe a new type of models for nucleon generalized parton distributions (GPDs) H and E. They are heavily based on the fact nucleon GPDs require to use two forms of double distribution (DD) representations. The outcome of the new treatment is that the usual DD+D-term construction should be amended by an extra term, {xi} E{sub +}{sup 1} (x,{xi}) which has the DD structure {alpha}/{beta} e({beta},{alpha}, with e({beta},{alpha}) being the DD that generates GPD E(x,{xi}). We found that this function, unlike the D-term, has support in the whole -1 <= x <= 1 region. Furthermore, it does not vanish at the border points |x|={xi}.

Radyushkin, Anatoly V. [JLAB, Newport News, VA (United States)

2014-01-01T23:59:59.000Z

418

Conduction Models Of The Temperature Distribution In The East Rift Zone Of  

Open Energy Info (EERE)

Conduction Models Of The Temperature Distribution In The East Rift Zone Of Conduction Models Of The Temperature Distribution In The East Rift Zone Of Kilauea Volcano Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Conduction Models Of The Temperature Distribution In The East Rift Zone Of Kilauea Volcano Details Activities (2) Areas (1) Regions (0) Abstract: Temperature variations in the 1966-meter Hawaii Geothermal Project well HGP-A are simulated by model studies using a finite element code for conductive heat flow. Three models were generated: a constant temperature source from a vertical dike; a constant heat-generating magma chamber; and a transient heat source from a tapered vertical dike. Fair correlation is obtained between the HGP-A well temperature and the tapered dike 125 years after it is injected with an initial (transient) 1200°C

419

Category:Energy Distribution Organizations | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Energy Distribution Organizations Jump to: navigation, search Add a new Company Loading map... {"format":"googlemaps3","type":"ROADMAP","types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":1000,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"\u2026

420

Efficient Distributed Quantum Computing  

E-Print Network [OSTI]

We provide algorithms for efficiently addressing quantum memory in parallel. These imply that the standard circuit model can be simulated with low overhead by the more realistic model of a distributed quantum computer. As a result, the circuit model can be used by algorithm designers without worrying whether the underlying architecture supports the connectivity of the circuit. In addition, we apply our results to existing memory intensive quantum algorithms. We present a parallel quantum search algorithm and improve the time-space trade-off for the Element Distinctness and Collision problems.

Robert Beals; Stephen Brierley; Oliver Gray; Aram Harrow; Samuel Kutin; Noah Linden; Dan Shepherd; Mark Stather

2012-07-10T23:59:59.000Z

Note: This page contains sample records for the topic "distribution type constant" 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

Attributive types for proof erasure  

Science Journals Connector (OSTI)

Proof erasure plays an essential role in the paradigm of programming with theorem proving. In this paper, we introduce a form of attributive types that carry an attribute to determine whether expressions assigned such types are eligible for erasure before ...

Hongwei Xi

2007-05-01T23:59:59.000Z

422

Property:EIA/861/ActivityDistribution | Open Energy Information  

Open Energy Info (EERE)

ActivityDistribution ActivityDistribution Jump to: navigation, search This is a property of type Boolean. Description: Activity Distribution Entity engages in power distribution activity (Y or N) [1] References ↑ EIA Form EIA-861 Final Data File for 2008 - F861 File Layout-2008.doc Pages using the property "EIA/861/ActivityDistribution" Showing 25 pages using this property. (previous 25) (next 25) 4 4-County Electric Power Assn + true + A A & N Electric Coop (Virginia) + true + AEP Texas Central Company + true + AEP Texas North Company + true + AGC Division of APG Inc + true + Access Energy Coop + true + Adams Electric Coop + true + Adams Electric Cooperative Inc + true + Adams Rural Electric Coop, Inc + true + Adams-Columbia Electric Coop + true + Adrian Public Utilities Comm + true +

423

Distributed Wind Site Analysis Tool (DSAT) | Open Energy Information  

Open Energy Info (EERE)

Distributed Wind Site Analysis Tool (DSAT) Distributed Wind Site Analysis Tool (DSAT) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Distributed Wind Site Analysis Tool (DSAT) Focus Area: Renewable Energy Topics: Opportunity Assessment & Screening Website: dsat.cadmusgroup.com/Default.aspx Equivalent URI: cleanenergysolutions.org/content/distributed-wind-site-analysis-tool-d Language: English Policies: Deployment Programs DeploymentPrograms: Technical Assistance The Distributed Wind Site Analysis Tool (DSAT) is a powerful online tool for conducting detailed site assessments for single turbine projects, from residential to community scale. The tool offers users the ability to analyse potential wind turbine installment projects based on the type of turbine being installed, the terrain of the installment site, and the

424

FUEL CELLS SOLID OXIDE FUEL CELLS | Gas Distribution  

Science Journals Connector (OSTI)

A uniform distribution of the reactants over the total available electrode surfaces in solid oxide fuel cells (SOFCs) is a prerequisite for the proper operation of the fuel cell. The gas distribution plays a dominant role not only in the current density distribution but also in the temperature distribution over the cell areas and in the stack and modules. Several transport mechanisms for mass transport occurring in the SOFC are introduced and discussed. General flow configurations and structures for the gas distribution at three different levels, i.e., stack/module, cell/tube, and electrode/electrolyte, are discussed for both tubular and planar type cells and illustrated with examples of concentration and temperature profiles.

L.G.J. de Haart; M. Spiller

2009-01-01T23:59:59.000Z

425

Distributed Energy Resources for Carbon Emissions Mitigation  

E-Print Network [OSTI]

and Energy Reliability, Distribution System Integrationand Energy Reliability, Distribution System Integration

Firestone, Ryan; Marnay, Chris

2008-01-01T23:59:59.000Z

426

Tornado type wind turbines  

DOE Patents [OSTI]

A tornado type wind turbine has a vertically disposed wind collecting tower with spaced apart inner and outer walls and a central bore. The upper end of the tower is open while the lower end of the structure is in communication with a wind intake chamber. An opening in the wind chamber is positioned over a turbine which is in driving communication with an electrical generator. An opening between the inner and outer walls at the lower end of the tower permits radially flowing air to enter the space between the inner and outer walls while a vertically disposed opening in the wind collecting tower permits tangentially flowing air to enter the central bore. A porous portion of the inner wall permits the radially flowing air to interact with the tangentially flowing air so as to create an intensified vortex flow which exits out of the top opening of the tower so as to create a low pressure core and thus draw air through the opening of the wind intake chamber so as to drive the turbine.

Hsu, Cheng-Ting (Ames, IA)

1984-01-01T23:59:59.000Z

427

The Formulation of Quantum Field Theory with no Renormalization of Masses and Coupling Constants of Fermions  

E-Print Network [OSTI]

The paper presents the formulation of quantum field theory without renormalization of masses and coupling constants of fermions. Counter-terms, compensating for divergent quantities in self-energy diagrams of fermions and vacuum polarization diagrams at all orders of the perturbation theory, appear in the appropriate Hamiltonians under the special time-dependent unitary transformation.

Neznamov, V P

2015-01-01T23:59:59.000Z

428

The B{sub s}B*K coupling constant using QCDSR  

SciTech Connect (OSTI)

In this work we evaluate the coupling constant for the vertex B{sub s}B*K by the QCD Sum Rules. The result was obtained using the heaviest particle off shell of this vertex, the B{sub s} meson, and the lightest particle off shell, the K meson.

Cerqueira, A. Jr.; Rodrigues, B. O. [Instituto de Fisica Armando Dias Tavares, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20559-900, Rio de Janeiro, RJ (Brazil); Bracco, M. E. [Faculdade de Tecnologia, DMFC, Universidade do Estado do Rio de Janeiro, Rod. Presidente Dutra km 298, 27537-000, Resende, RJ (Brazil)

2013-03-25T23:59:59.000Z

429

A QCDSR calculation for the {phi}D{sub s}D{sub s} coupling constant  

SciTech Connect (OSTI)

In this work, we use the QCD Sum Rules (QCDSR) technique to obtain informations about the strong coupling constant of the three meson vertex {phi}D{sub s}D{sub s}. The calculation is done for the case where the {phi} meson is considered off-shell.

Rodrigues, B. O.; Chiapparini, M. [Instituto de Fisica, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-900 Rio de Janeiro, RJ (Brazil); Bracco, M. E. [Faculdade de Tecnologia, Universidade do Estado do Rio de Janeiro, Rod. Presidente Dutra Km 298, Polo Industrial, 27537-000 , Resende, RJ (Brazil)

2013-03-25T23:59:59.000Z

430

The Partially Stopped Leaky Bucket: An Efficient Traffic Regulator with Constant  

E-Print Network [OSTI]

1 The Partially Stopped Leaky Bucket: An Efficient Traffic Regulator with Constant Time Implementation Florin Ciucu, Brian L. Mark , and Robert Simon Lab. of Cooperative Work Environment Dept. of Computer Science Dept. of Electrical and Computer Engineering School of Information Technology

Ciucu, Florin

431

The hillslope-storage Boussinesq model for non-constant bedrock slope  

E-Print Network [OSTI]

The hillslope-storage Boussinesq model for non-constant bedrock slope A.G.J. Hilbertsa,*, E.E. van hillslope-storage Boussinesq (hsB) model is cast in a generalized formulation enabling the model to handle flow; Boussinesq equation; Richards equation; Kinematic wave equation 1. Introduction Landscape

Loon, E. Emiel van

432

Channel Specific Rate Constants Relevant to the Thermal Decomposition of Disilane  

Science Journals Connector (OSTI)

Channel Specific Rate Constants Relevant to the Thermal Decomposition of Disilane ... Silane and disilane are routinely used as the source gases for silicon chemical vapor deposition (CVD) processes. ... Each of the reactions relevant to the thermal decomposition of disilane is, of course, pressure dependent. ...

Keiji Matsumoto; Stephen J. Klippenstein; Kenichi Tonokura; Mitsuo Koshi

2005-05-14T23:59:59.000Z

433

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS  

E-Print Network [OSTI]

THE BEST SOBOLEV TRACE CONSTANT IN DOMAINS WITH HOLES FOR CRITICAL OR SUBCRITICAL EXPONENTS JULI in the Sobolev trace embedding H1() Lq() in a bounded smooth domain for critical or subcritical q, that is 1 embedding H1 () Lq () for critical or subcritical exponents, 1

Rossi, Julio D.

434

Viscosity and elastic constants of amorphous Si and Ge Ann Witwow@ and Frans Spaepen  

E-Print Network [OSTI]

Viscosity and elastic constants of amorphous Si and Ge Ann Witwow@ and Frans Spaepen Division expansion. Viscous flow was measured by stress relaxation and was found to be Newtonian. The viscosity of the viscosity of sputter-deposited samples as a function of stress (to establish the Newtonian charac- ter

Spaepen, Frans A.

435

Equilibria for Economies with Production: Constant-Returns Technologies and Production Planning Constraints  

E-Print Network [OSTI]

can produce a bundle of goods out of many possibilities e.g., a dairy can either produce ice- creams, each producer has a convex, constant-returns- to-scale, technology. In particular, this means that it is not possible to produce something from nothing. At a given price, the producer picks a technologically feasible

Varadarajan, Kasturi R.

436

Fretting Corrosion Damage of Total Hip Prosthesis: Friction Coefficient and Damage Rate Constant Approach  

E-Print Network [OSTI]

1 Fretting Corrosion Damage of Total Hip Prosthesis: Friction Coefficient and Damage Rate Constant Building, University Park 16802 PA USA 4 Chair Professor Center for Research Excellence in Corrosion hip prosthesis. Fretting corrosion tests were conducted with stainless steel and poly (methyl

Boyer, Edmond

437

The watt balance: determination of the Planck constant and redefinition of the kilogram  

Science Journals Connector (OSTI)

...aspect is that the future definition can...fundamental constant of quantum physics, which...example an electric motor lifting a mass...feasibility study for a future cryogenic experiment...electrostatic motor which is part...and for the future realization of...two macroscopic quantum effects, thus...

2011-01-01T23:59:59.000Z

438

Generalized methods and solvers for noise removal from piecewise constant signals. II. New methods  

Science Journals Connector (OSTI)

...piecewise constant signals. II. New methods Max A. Little 1 2 * Nick S. Jones 1 3 * Author for correspondence ( max.little@physics...existing methods, leading to new methods that have their own merit as PWC denoising methods. To recap, the notation used in part...

2011-01-01T23:59:59.000Z

439

Performance Analysis of a New Ultrasound Axial Strain Time Constant Estimation  

E-Print Network [OSTI]

elastographic time constant (TC) estimator, which is based on the use of the Least Square Error (LSE) curve-fitting method and the Levenberg-Marquardt (LM) optimization rule as applied to noisy elastographic data obtained from a tissue under creep compression...

Nair, Sanjay P.

2011-08-08T23:59:59.000Z

440

Bonding in Sodium Chloride Nanotubes: A New Analysis via Madelung Constants and Cohesive Energies  

E-Print Network [OSTI]

1 Bonding in Sodium Chloride Nanotubes: A New Analysis via Madelung Constants and Cohesive Energies is introduced which employs a linear relationship between nanotube cohesive energies determined via Density between ionic and cohesive bonding energies indicate that, as the nanotubes become longer, ionic bonding

Hanusa, Christopher

Note: This page contains sample records for the topic "distribution type constant" 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

Photon emission in a constant magnetic field in 2+1 dimensional space-time  

E-Print Network [OSTI]

We calculate by the proper-time method the amplitude of the two-photon emission by a charged fermion in a constant magnetic field in (2+1)-dimensional space-time. The relevant dynamics reduces to that of a supesymmetric quantum-mechanical system with one bosonic and one fermionic degrees of freedom.

J. T. S. Amaral; S. I. Zlatev

2005-11-01T23:59:59.000Z

442

ur solid Earth undergoes constant change from motions within its core  

E-Print Network [OSTI]

O ur solid Earth undergoes constant change from motions within its core to the surface. Solid Earth is the physical planet we live on, not the oceans or atmosphere. Motions near Earth's cen- ter affect the geodynamo, which generates the Earth's magnetic field. Convection within Earth's mantle drives plate

McLeod, Dennis

443

Impact of thermal strain on the dielectric constant of sputtered barium strontium titanate thin films  

E-Print Network [OSTI]

Impact of thermal strain on the dielectric constant of sputtered barium strontium titanate thin, California 93106 Received 6 November 2001; accepted for publication 10 January 2002 Barium strontium titanate: magnesium oxide, strontium titanate, sapphire, silicon, and vycor glass. These substrates were chosen

York, Robert A.

444

Calibration of the torsional spring constant and the lateral photodiode response of frictional force microscopes  

E-Print Network [OSTI]

Calibration of the torsional spring constant and the lateral photodiode response of frictional simultaneously calibrates the photodiode response to the angular deflection of the cantilever. It does not rely steps: the calibration of the lateral photodiode response to convert the measured volts to the angle

Attard, Phil

445

The precession constant of the Earth: Variations through the ice-age  

SciTech Connect (OSTI)

We directly calculate the history of variations in Earth`s precession constant H that are forced by variations in surface mass associated with late Pleistocene ice-age glaciation and deglaciation events. Our analyses show that the magnitude of Delta H/H(sub zero) is lower than that required to cause the recently hypothesized resonant reduction of the precession period.

Peltier, W.R.; Jiang, X. [Univ. of Toronto, Ontario (Canada)] [Univ. of Toronto, Ontario (Canada)

1994-10-01T23:59:59.000Z

446

Jet Measurements and Extraction of the Strong Coupling Constant at HERA  

E-Print Network [OSTI]

Results on jet measurements in neutral current deep inelastic scattering at HERA are presented. The low-$x_{Bj}$ and low-$Q^2$ region is explicitly investigated using forward jet production and the azimuthal asymmetry between jets in dijet production. Recent results on the determination of the strong coupling constant, $\\alpha_s(M_Z)$, are discussed.

A. A. Savin

2005-05-22T23:59:59.000Z

447

Waves of constant shape and the structure of the \\rotors boundary" in excitable media.  

E-Print Network [OSTI]

Waves of constant shape and the structure of the \\rotors boundary" in excitable media. Yu.E. Elkin wave patterns in R 2 , in terms of the kinematic approach. These patterns include rotating waves (diverging and converging spiral waves), and translating waves (retracting waves, \\critical #12;ngers" and \\V

Biktashev, Vadim N.

448

CODATA recommended values of the fundamental physical constants: Peter J. Mohr,  

E-Print Network [OSTI]

constants and conversion factors of physics and chemistry recommended by the Committee on Data for Science c. Nuclear polarization 640 d. Self energy 640 e. Vacuum polarization 641 f. Two-photon corrections energy and vacuum polarization 645 j. Radiative-recoil corrections 645 k. Nucleus self energy 645 l

449

Temperature dependent elastic constants and ultimate strength of graphene and graphyne  

E-Print Network [OSTI]

Temperature dependent elastic constants and ultimate strength of graphene and graphyne Tianjiao strength of graphene and graphyne Tianjiao Shao,1,2 Bin Wen,1,a) Roderick Melnik,3,4 Shan Yao,2 Yoshiyuki strength of graphene and graphyne. For the linear thermal expan- sion coefficient, both graphene

Melnik, Roderick

450

Chemical reactor models of optimal digestion efficiency with constant foraging costs  

E-Print Network [OSTI]

Chemical reactor models of optimal digestion efficiency with constant foraging costs J. David Logan-batch reactor or plug flow reactor. Specifically, we determine the residence time that optimizes the average net , Anthony Joern , & William Wolesensky January 24, 2003 Abstract We develop quantitative optimization

Logan, David

451

Spare change? Today's business leaders have to work in a constantly shifting landscape. The challenge  

E-Print Network [OSTI]

Spare change? Today's business leaders have to work in a constantly shifting landscape. According to Climate change: Everyone's business, a report from the CBI Climate Change Task Force published. The challenge is to turn change management into an opportunity, not a cost centre, writes Oliver Cann

452

Accurate laboratory ultraviolet wavelengths for quasar absorption-line constraints on varying fundamental constants  

Science Journals Connector (OSTI)

......improvement in the quality and quantity of...invested into improving the laboratory...reducing the noise, solar-blind photomultipliers...2000-a, where air absorbs most light...constants for the energy levels included...dispersion formula for air at 15C and atmospheric......

M. Aldenius; S. Johansson; M. T. Murphy

2006-07-21T23:59:59.000Z

453

Absorption line shape recovery beyond the detection bandwidth limit: application to the Boltzmann constant determination  

E-Print Network [OSTI]

1 Absorption line shape recovery beyond the detection bandwidth limit: application to the Boltzmann of the influence of detection bandwidth properties on observed line shapes in laser absorption spectroscopy the Boltzmann constant (kB) [10, 11]. Based upon laser absorption spectroscopy in the linear regime

454

Estimation of surface precipitation constants for sorption of divalent metals onto hydrous ferric oxide and calcite  

E-Print Network [OSTI]

+ , Mg2+ , Ca2+ , Mn2+ , Co2+ , Ni2+ , Sr2+ , Sn2+ , Ba2+ , Eu2+ , Ra2+ , Pb2+ , Hg2+ , Cu2+ , and UO2 2 estimation of free energies and, hence, equilibrium constants of the surface precipitation reactions for Be2

Polly, David

455

IEEE POWER ELECTRONICS LETTERS 1 A Constant-Frequency Method for Improving  

E-Print Network [OSTI]

these are resonant gate drive [3]­[5], pulse frequency modulation (PFM) [6], and a hybrid Manuscript received, in the case of the variable-frequency methods, their potential for generating undesired noise at subharmonicsIEEE POWER ELECTRONICS LETTERS 1 A Constant-Frequency Method for Improving Light-Load Efficiency

Lee, Thomas H.

456

A Design Methodology for Link Adaptation Schemes using Constellations of Constant PAPR  

E-Print Network [OSTI]

communication systems requires the inclusion of circuit energy consumption in the system's total energy budget in the total energy budget, in which a set of signal constellations of constant peak-to-average power ratio are then applied to a design example. I. INTRODUCTION Including circuit energy consumption in the global energy

?ien, Geir E.

457

Cosmic strings in a spacetime with positive cosmological constant  

Science Journals Connector (OSTI)

We study Abelian strings in a fixed de Sitter background. We find that the gauge and Higgs fields extend smoothly across the cosmological horizon and that the string solutions have oscillating scalar fields outside the cosmological horizon for all currently accepted values of the cosmological constant. If the gauge to Higgs boson mass ratio is small enough, the gauge field function has a power-like behaviour, while it is oscillating outside the cosmological horizon if Higgs and gauge boson mass are comparable. Moreover, we observe that Abelian strings exist only up to a maximal value of the cosmological constant and that two branches of solutions exist that meet at this maximal value. We also construct radially excited solutions that only exist for non-vanishing values of the cosmological constant and are thus a novel feature as compared to flat spacetime. Considering the effect of the de Sitter string on the spacetime, we observe that the deficit angle increases with increasing cosmological constant. Lensed objects would thus be separated by a larger angle as compared to asymptotically flat spacetime.

Yves Brihaye; Betti Hartmann

2008-01-01T23:59:59.000Z

458

Cosmic strings in a space-time with positive cosmological constant  

E-Print Network [OSTI]

We study Abelian strings in a fixed de Sitter background. We find that the gauge and Higgs fields extend smoothly across the cosmological horizon and that the string solutions have oscillating scalar fields outside the cosmological horizon for all currently accepted values of the cosmological constant. If the gauge to Higgs boson mass ratio is small enough, the gauge field function has a power-like behaviour, while it is oscillating outside the cosmological horizon if Higgs and gauge boson mass are comparable. Moreover, we observe that Abelian strings exist only up to a maximal value of the cosmological constant and that two branches of solutions exist that meet at this maximal value. We also construct radially excited solutions that only exist for non-vanishing values of the cosmological constant and are thus a novel feature as compared to flat space-time. Considering the effect of the de Sitter string on the space-time, we observe that the deficit angle increases with increasing cosmological constant. Lensed objects would thus be separated by a larger angle as compared to asymptotically flat space-time.

Yves Brihaye; Betti Hartmann

2008-06-03T23:59:59.000Z

459

Rate constants for OH with selected large alkanes : shock-tube measurements and an improved group scheme.  

SciTech Connect (OSTI)

High-temperature rate constant experiments on OH with the five large (C{sub 5}-C{sub 8}) saturated hydrocarbons n-heptane, 2,2,3,3-tetramethylbutane (2,2,3,3-TMB), n-pentane, n-hexane, and 2,3-dimethylbutane (2,3-DMB) were performed with the reflected-shock-tube technique using multipass absorption spectrometric detection of OH radicals at 308 nm. Single-point determinations at {approx}1200 K on n-heptane, 2,2,3,3-TMB, n-hexane, and 2,3-DMB were previously reported by Cohen and co-workers; however, the present work substantially extends the database to both lower and higher temperature. The present experiments span a wide temperature range, 789-1308 K, and represent the first direct measurements of rate constants at T > 800 K for n-pentane. The present work utilized 48 optical passes corresponding to a total path length of {approx}4.2 m. As a result of this increased path length, the high OH concentration detection sensitivity permitted pseudo-first-order analyses for unambiguously measuring rate constants. The experimental results can be expressed in Arrhenius form in units of cm{sup 3} molecule{sup -1} s{sup -1} as follows: K{sub OH+n-heptane} = (2.48 {+-} 0.17) x 10{sup -10} exp[(-1927 {+-} 69 K)/T] (838-1287 K); k{sub OH+2,2,3,3-TMB} = (8.26 {+-} 0.89) x 10{sup -11} exp[(-1337 {+-} 94 K)/T] (789-1061 K); K{sub OH+n-pentane} = (1.60 {+-} 0.25) x 10{sup -10} exp[(-1903 {+-} 146 K)/T] (823-1308 K); K{sub OH+n-hexane} = (2.79 {+-} 0.39) x 10{sup -10} exp[(-2301 {+-} 134 K)/T] (798-1299 K); and k{sub OH+2,3-DMB} = (1.27 {+-} 0.16) x 10{sup -10} exp[(-1617 {+-} 118 K)/T] (843-1292 K). The available experimental data, along with lower-T determinations, were used to obtain evaluations of the experimental rate constants over the temperature range from {approx}230 to 1300 K for most of the title reactions. These extended-temperature-range evaluations, given as three-parameter fits, are as follows: k{sub OH+n-heptane} = 2.059 x 10{sup -5}T{sup 1.401} exp(33 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (241-1287 K); k{sub OH+2,2,3,3-TMB} = 6.835 x 10{sup -17}T{sup 1.886} exp(-365 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (290-1180 K); k{sub OH+n-pentane} = 2.495 x 10{sup -16}T{sup 1.649} exp(80 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (224-1308 K); k{sub OH+n-hexane} = 3.959 x 10{sup -18}T{sup 2.218} exp(443 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (292-1299 K); and k{sub OH+2,3-DMB} = 2.287 x 10{sup -17}T{sup 1.958} exp(365 K/T) cm{sup 3} molecule{sup -1} s{sup -1} (220-1292 K). The experimental data and the evaluations obtained for these five larger alkanes in the present work were used along with prior data/evaluations obtained in this laboratory for H abstractions by OH from a series of smaller alkanes (C{sub 3}?C{sub 5}) to devise rate rules for abstractions from various types of primary, secondary, and tertiary H atoms. Specifically, the current scheme was applied with good success to H abstractions by OH from a series of n-alkanes (n-octane through n-hexadecane). The total rate constants using this group scheme for reactions of OH with selected large alkanes are given as three-parameter fits in this article. The rate constants for the various abstraction channels in any large n-alkane can also be obtained using the groups listed in this article. The present group scheme serves to reduce the uncertainties in rate constants for OH + alkane reactions.

Sivaramakrishnan, R.; Michael, J. V.; Chemical Sciences and Engineering Division

2009-04-30T23:59:59.000Z

460

Technical Potential for Local Distributed  

E-Print Network [OSTI]

the impact of high penetrations of solar PV on wholesale power markets (energy and capacity Technical Potential for Local Distributed Photovoltaics in California Preliminary.391.5100 www.ethree.com Technical Potential for Local Distributed Photovoltaics in California Preliminary

Note: This page contains sample records for the topic "distribution type constant" 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

Arnold Schwarzenegger DISTRIBUTED GENERATION DRIVETRAIN  

E-Print Network [OSTI]

Arnold Schwarzenegger Governor DISTRIBUTED GENERATION DRIVETRAIN FOR WINDPOWER APPLICATION Prepared in this report. #12;ENERGY INNOVATIONS SMALL GRANT (EISG) PROGRAM INDEPENDENT ASSESSMENT REPORT (IAR) DISTRIBUTED GENERATION DRIVETRAIN FOR WINDPOWER APPLICATION EISG AWARDEE Dehlsen Associates, LLC 7985 Armas Canyon Road

462

Hydrogen storage and distribution systems  

Science Journals Connector (OSTI)

Hydrogen storage and transportation or distribution is closely linked together. Hydrogen can be distributed continuously in pipelines or ... or airplanes. All batch transportation requires a storage system but al...

Andreas Zttel

2007-03-01T23:59:59.000Z

463

Annual Coal Distribution Tables  

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

and Foreign Distribution of U.S. Coal by State of Origin, 2001 and Foreign Distribution of U.S. Coal by State of Origin, 2001 State / Region Domestic Foreign Total Alabama 14,828 4,508 19,336 Alaska 825 698 1,524 Arizona 13,143 - 13,143 Arkansas 13 - 13 Colorado 32,427 894 33,321 Illinois 33,997 285 34,283 Indiana 36,714 - 36,714 Kansas 176 - 176 Kentucky Total 131,546 2,821 134,367 East 107,000 2,707 109,706 West 24,547 114 24,660 Louisiana 3,746 - 3,746 Maryland 4,671 319 4,990 Mississippi 475 - 475 Missouri 366 - 366 Montana 38,459 485 38,944 New Mexico 28,949 - 28,949 North Dakota 30,449 - 30,449 Ohio 25,463 12 25,475 Oklahoma 1,710 - 1,710 Pennsylvania Total 64,392 6,005 70,397 Anthracite 2,852 205 3,057 Bituminous 61,540 5,800 67,340 Tennessee 3,346 28 3,374 Texas 45,019 31 45,050 Utah 24,761 2,144 26,905 Virginia 25,685 7,071 32,756 Washington 4,623 - 4,623 West Virginia Total 144,584

464

Annual Coal Distribution Tables  

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

Foreign Distribution of U.S. Coal by Major Coal-Exporting States and Foreign Distribution of U.S. Coal by Major Coal-Exporting States and Destination, 2001 Coal-Exporting State and Destination Metallurgical Steam Total Alaska - 761 761 South Korea - 761 761 Alabama 4,667 167 4,834 Argentina 155 - 155 Belgium 989 - 989 Brazil 1,104 - 1,104 Bulgaria 82 - 82 Egypt 518 - 518 Italy 115 - 115 Netherlands 56 83 139 Spain 412 84 496 Turkey 581 - 581 United Kingdom 654 - 654 Kentucky 2,130 - 2,130 Canada 920 - 920 France 22 - 22 Iceland 9 - 9 Italy 430 - 430 Netherlands 417 - 417 Spain 9 - 9 United Kingdom 323 - 323 Pennsylvania 1,086 14,326 15,722 Belgium - 203 203 Brazil 372 - 373 Canada - 12,141 12,418 France - 84 84 Germany 495 165 661 Ireland - 136 136 Netherlands 219 879 1,097 Norway - - 7 Peru - - 21 Portugal - 634 634 United Kingdom - 85 85 Venezuela - - 3 Utah - 1,420 1,420 Japan - 1,334 1,334 Taiwan - 86 86 Virginia 4,531

465

Annual Coal Distribution Tables  

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

Domestic Distribution of U.S. Coal by Destination State, Domestic Distribution of U.S. Coal by Destination State, Consumer, Destination and Method of Transportation, 2001 (Thousand Short Tons) DESTINATION: Alabama State of Origin by Method of Transportation Electricity Generation Coke Plants Industrial Plants (Except Coke) Residential and Commercial Total Alabama 7,212 375 6,032 3 13,622 Railroad 2,613 170 4,607 - 7,390 River 3,867 - - - 3,867 Truck 732 205 1,424 3 2,365 Illinois 1,458 - - * 1,458 Railroad 167 - - - 167 River 1,291 - - - 1,291 Truck - - - * * Kentucky Total 2,277 - 262 - 2,539 Railroad 1,928 - 165 - 2,093 River 349 - 83 - 432 Truck - - 14 - 14 Eastern 843 - 262 - 1,105 Railroad 843 - 165 - 1,008 River - - 83 - 83 Truck - - 14 - 14 Western 1,435 - - - 1,435 Railroad 1,086 - - - 1,086 River 349 - - - 349 Pennsylvania Total 242 - 62 - 304 Great Lakes - - 60 - 60 Railroad - - * - * River 242 - -

466

Benford distributions in NMR  

E-Print Network [OSTI]

Benford's Law is an empirical law which predicts the frequency of significant digits in databases corresponding to various phenomena, natural or artificial. Although counter intuitive at the first sight, it predicts a higher occurrence of digit 1, and decreasing occurrences to other larger digits. Here we report the Benford analysis of various NMR databases and draw several interesting inferences. We observe that, in general, NMR signals follow Benford distribution in time-domain as well as in frequency domain. Our survey included NMR signals of various nuclear species in a wide variety of molecules in different phases, namely liquid, liquid-crystalline, and solid. We also studied the dependence of Benford distribution on NMR parameters such as signal to noise ratio, number of scans, pulse angles, and apodization. In this process we also find that, under certain circumstances, the Benford analysis can distinguish a genuine spectrum from a visually identical simulated spectrum. Further we find that chemical-shift databases and amplitudes of certain radio frequency pulses generated using optimal control techniques also satisfy Benford's law to a good extent.

Gaurav Bhole; Abhishek Shukla; T. S. Mahesh

2014-06-27T23:59:59.000Z

467

Designing Distributed Applications with Mobile Code Paradigms  

E-Print Network [OSTI]

Designing Distributed Applications with Mobile Code Paradigms Antonio Carzaniga Politecnico di code, design paradigms, distributed applica­ tions. INTRODUCTION Distributed systems have been with the design of distributed applications, that aims at identifying the distributable components

Carzaniga, Antonio

468

BASICS OF GENERALIZED PARTON DISTRIBUTIONS  

SciTech Connect (OSTI)

A brief review of the theory of generalized parton distributions (GPDs) is given. We discuss the basic concepts of the GPD theory and relationship between GPDs and simpler phenomenological functions, viz. form factors, parton densities and distribution amplitudes. A special emphasis is given to the formulation of GPDs in terms of double distributions.

Anatoly Radyushkin

2012-12-01T23:59:59.000Z

469

Distributively generated lattices Grigore Calugareanu  

E-Print Network [OSTI]

Distributively generated lattices Grigore Calugareanu Abstract In 1938 [6] Ore proved the following and distributive is equivalent to locally cyclic (i.e. each finite set of elements generates a cyclic group). A lattice is called distributively generated [resp. cycle generated] if every element is a join

Cãlugãreanu, Grigore

470

DISTRIBUTED GENERATION AND COGENERATION POLICY  

E-Print Network [OSTI]

CALIFORNIA ENERGY COMMISSION DISTRIBUTED GENERATION AND COGENERATION POLICY ROADMAP FOR CALIFORNIA to the development of this report by the Energy Commission's Distributed Generation Policy Advisory Team; Melissa;ABSTRACT This report defines a year 2020 policy vision for distributed generation and cogeneration

471

Distributed Energy | Department of Energy  

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

Distributed Distributed Energy Distributed Energy Distributed energy consists of a range of smaller-scale and modular devices designed to provide electricity, and sometimes also thermal energy, in locations close to consumers. They include fossil and renewable energy technologies (e.g., photovoltaic arrays, wind turbines, microturbines, reciprocating engines, fuel cells, combustion turbines, and steam turbines); energy storage devices (e.g., batteries and flywheels); and combined heat and power systems. Distributed energy offers solutions to many of the nation's most pressing energy and electric power problems, including blackouts and brownouts, energy security concerns, power quality issues, tighter emissions standards, transmission bottlenecks, and the desire for greater control over energy costs.

472

Kirsh Home: Articles: Distributed Cognition, Coordination and Environment Design This appeared in Proceedings of the European Cognitive Science Society (1999). Formal citation: Distributed Cognition, Coordination  

E-Print Network [OSTI]

@ucsd.edu Abstract The type of principles which cognitive engineers need to design better work environmentsKirsh Home: Articles: Distributed Cognition, Coordination and Environment Design This appeared, Coordination and Environment Design. Distributed Cognition, Coordination and Environment Design David Kirsh

Kirsh, David

473

Shock tube measurements of high temperature rate constants for OH with cycloalkanes and methylcycloalkanes  

SciTech Connect (OSTI)

High temperature experiments were performed with the reflected shock tube technique using multi-pass absorption spectrometric detection of OH radicals at 308 nm. The present experiments span a wide T-range, 801-1347 K, and represent the first direct measurements of the title rate constants at T>500 K for cyclopentane and cyclohexane and the only high temperature measurements for the corresponding methyl derivatives. The present work utilized 48 optical passes corresponding to a total path length {proportional_to}4.2 m. As a result of this increased path length, the high [OH] detection sensitivity permitted unambiguous analyses for measuring the title rate constants. The experimental rate constants in units, cm{sup 3} molecule{sup -1} s{sup -1}, can be expressed in Arrhenius form as k{sub OH+Cyclopentane}=(1.90{+-}0.30) x 10{sup -10}exp(-1705{+-}56 K/T) (813-1341 K), k{sub OH+Cyclohexane}=(1.86{+-}0.24) x 10{sup -10}exp(-1513{+-}123 K/T) (801-1347 K), k{sub OH+Methylcyclopentane}=(2.02{+-}0.19) x 10{sup -10}exp(-1799{+-}96 K/T) (859-1344 K), k{sub OH+Methylcyclohexane}=(2.55{+-}0.30) x 10{sup -10}exp(-1824{+-}114 K/T) (836-1273 K). These results and lower-T experimental data were used to obtain three parameter evaluations of the experimental rate constants for the title reactions over an even wider T-range. These experimental three parameter fits to the rate constants in units, cm{sup 3} molecule{sup -1} s{sup -1}, are k{sub OH+Cyclopentane}=1.390 x 10{sup -16}T{sup 1.779}exp(97 K/T)cm{sup 3} molecule{sup -1}s{sup -1} (209-1341 K), k{sub OH+Cyclohexane}=3.169 x 10{sup -16}T{sup 1.679}exp(119 K/T)cm{sup 3}molecule{sup -1}s{sup -1} (225-1347 K), k{sub OH+Methylcyclopentane}=6.903 x 10{sup -18}T{sup 2.148}exp(536 K/T)cm{sup 3}molecule{sup -1}s{sup -1} (296-1344 K), k{sub OH+Methylcyclohexane}=2.341 x 10{sup -18}T{sup 2.325}exp(602 K/T)cm{sup 3}molecule{sup -1}s{sup -1} (296-1273 K). High level electronic structure methods were used to characterize the first three reactions in order to provide reliable extrapolations of the rate constants from 250-2000 K. The results of the theoretical predictions for OH + cyclohexane and OH + methylcyclopentane were sufficient to make a theoretical prediction for OH + methylcyclohexane. The present recommended rate expressions for OH with cyclohexane, and methylcyclohexane, give rate constants that are 15-25% higher (over the T-range 800-1300 K) than the rate constants utilized in recent modeling efforts aimed at addressing the oxidation of cyclohexane and methylcyclohexane. The current measurements reduce the uncertainties in rate constants for the primary cycloalkane consumption channel in a high temperature oxidation environment. (author)

Sivaramakrishnan, R.; Michael, J.V. [Chemical Sciences and Engineering Division, D-193, Bldg. 200, Argonne National Laboratory, Argonne, IL 60439 (United States)

2009-05-15T23:59:59.000Z

474

Planet occurrence within 0.25AU of solar-type stars from Kepler  

E-Print Network [OSTI]

We report the distribution of planets as a function of planet radius, orbital period, and stellar effective temperature for orbital periods less than 50 days around solar-type (GK) stars. These results are based on the ...

Seager, Sara

475

U.S. Crude Oil Production Forecast-Analysis of Crude Types  

Gasoline and Diesel Fuel Update (EIA)

oil production by crude type as it would be delivered from well-site or lease storage tanks. Once the oil enters transportation and distribution systems, it may be commingled...

476

Light energy supply in plate-type and light diffusing optical fiber bioreactors  

Science Journals Connector (OSTI)

The light distribution profiles of plate-type photobioreactors were investigated. Light reaching individual channels of a plate module is dependent on the orientation of the module to the sun, the position of ...

O. Pulzl; N. Gerbsch; R. Buchholz

1995-04-01T23:59:59.000Z

477

MEMORANDUM FOR DISTRIBUTION  

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

* Department of Energy * Department of Energy Washington, DC 20585 December 20, 2007 MEMORANDUM FOR DISTRIBUTION FROM: MICHAEL W. OWEN /

478

Distribution Category UC-950  

Gasoline and Diesel Fuel Update (EIA)

EIA - 0627 EIA - 0627 Distribution Category UC-950 May 2001 Energy Information Administration Office of Oil and Gas U.S. Department of Energy Washington, DC 20585 This report was prepared by the Energy Information Administration, the independent statistical and analytical agency within the U.S. Department of Energy. The Information contained herein should be attributed to the Energy Information Administration and should not be construed as advocating or reflecting any policy of the Department of Energy or any other organization. Energy Information Administration Future Oil Production for the Alaska North Slope iii Future Oil Production for the Alaska North Slope, a product of the Energy Information Administration's (EIA) Office of Oil and Gas,

479

Ductless Hydronic Distribution Systems  

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

8, 2011 8, 2011 Ductless Hydronic Distribution Systems Welcome to the Webinar! We will start at 1:00 PM Eastern Time Be sure that you are also dialed into the telephone conference call: Dial-in number: 800-779-8694; Pass code: 2506667 Download the presentation at: www.buildingamerica.gov/meetings.html Building Technologies Program eere.energy.gov * Reduce energy use in new and existing residential buildings * Promote building science and systems engineering / integration approach * "Do no harm": Ensure safety, health and durability are maintained or improved * Accelerate adoption of high performance technologies www.buildingamerica.gov Introduction to Building America Building Technologies Program eere.energy.gov Building America Industry Consortia

480

MEMORANDUM FOR DISTRIBUTION  

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

6, 2013 6, 2013 MEMORANDUM FOR DISTRIBUTION b FROM : PAUL BOSCO ? DIRECTOR Cl.) v SUBJECT: OFFICE OF ACQUISITION AND SUPPLY MANAGEMENT Procurement Evaluation and Re-Engineering Team and Establishment of a 5-Year Cycle with Correspond ing Schedule As you are aware, the Procurement Evaluation and Re-Engineering Team (PERT) has a proven track record within the Department of Energy (DOE) complex for effectively reviewing contractor purchasing systems on Management and Operating contracts. The PERT program is mission essential. Federal Acquisition Regulation (FAR) 44.302(b) requires Contracting Officers to make an assessment every three years of the need for a review of a contractor's purchasing system; with reduced funding and budget levels, it is considered the most economical way to fulfill the requirements of FAR 44.302(b). The

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481

Nonlinear DSTATCOM controller design for distribution network with distributed generation to enhance voltage stability  

E-Print Network [OSTI]

Nonlinear DSTATCOM controller design for distribution network with distributed generation Accepted 19 June 2013 Keywords: Distributed generation Distribution network DSATACOM Partial feedback connected to a distribution network with distributed generation (DG) to regulate the line voltage

Pota, Himanshu Roy

482

Distributed Wind | Open Energy Information  

Open Energy Info (EERE)

Distributed Wind Distributed Wind Jump to: navigation, search Distributed wind energy systems provide clean, renewable power for on-site use and help relieve pressure on the power grid while providing jobs and contributing to energy security for homes, farms, schools, factories, private and public facilities, distribution utilities, and remote locations.[1] Resources Clean Energy States Alliance. (2010). State-Based Financing Tools to Support Distributed and Community Wind Projects. Accessed September 27, 2013. This guide reviews the financing role that states, and specifically state clean energy funds, have played and can play in supporting community and distributed wind projects. Clean Energy States Alliance. (May 2010). Supporting Onsite Distributed Wind Generation Projects. Accessed September 27, 2013.

483

Application of the distributed activation energy model to blends devolatilisation  

Science Journals Connector (OSTI)

In this study, an investigation was carried out into the thermal behaviour of coal, petcoke and their blend as a generic feedstock in combustion and IGCC plants for energy production. The samples were pyrolysed in a TG analyzer in nitrogen atmosphere (constant flow of 0.0335m/s) at several heating rates with temperatures ranging from 300 to 1223K. The distributed activation energy model was applied to study the effects of heating rates on the reactions of single solids. The results obtained were used in the calculation of curves mass loss vs. temperature at more realistic heating rates. The algorithm used to obtain the distribution of reactivities for single solids was successfully implemented to allow the prediction of blends performance.

M.V. Navarro; A. Aranda; T. Garcia; R. Murillo; A.M. Mastral

2008-01-01T23:59:59.000Z

484

A Review of Distributions on the String Landscape  

E-Print Network [OSTI]

We review some basic flux vacua counting techniques and results, focusing on the distributions of properties over different regions of the landscape of string vacua and assessing the phenomenological implications. The topics we discuss include: an overview of how moduli are stabilized and how vacua are counted; the applicability of effective field theory; the uses of and differences between probabilistic and statistical analysis (and the relation to the anthropic principle); the distribution of various parameters on the landscape, including cosmological constant, gauge group rank, and SUSY-breaking scale; "friendly landscapes"; open string moduli; the (in)finiteness of the number of phenomenologically viable vacua; etc. At all points, we attempt to connect this study to the phenomenology of vacua which are experimentally viable.

Jason Kumar

2006-05-24T23:59:59.000Z

485

Electric Drive Vehicles: A Huge New Distributed Energy Resource  

E-Print Network [OSTI]

with electric power generation and storage capabilities · Three Vehicle Types in Program ­ Full ZEV: true zero) #12;Electric Drive in Vehicles -- All the Ingredients for a Distributed Power System #12;Vehicle and energy storage potential · Electric vehicle charge stations: grid connection points for power

Firestone, Jeremy

486

LIMITED POWER BURSTS IN DISTRIBUTED MODELS OF NUCLEAR REACTORS  

E-Print Network [OSTI]

LIMITED POWER BURSTS IN DISTRIBUTED MODELS OF NUCLEAR REACTORS M. V. Bazhenov and E. F. Sabaev UDC employed for analyzing reactor dynamics. Equations of this type are used for analyzing the stability of the reactor power, etc. Among these problems the question of the boundedness of reactor power bursts

Bazhenov, Maxim

487

On the asymptotic homotopy type of inductive limit Type ...  

E-Print Network [OSTI]

In this note we exhibit large classes of (projeetionless) stable, nuclear C*- algebras whose asymptotic homotopy type is determined by K-theoretical data.

488

From the orbit theory to a guiding center parametric distribution function  

E-Print Network [OSTI]

This work proposes a parametric equilibrium distribution function $\\mathcal{F}_{eq}$ to be applied to the gyrokinetic studies of the Finite Orbit Width behavior of guiding centers representing several species encountered in axisymmetric tokamak plasma, as fusion products, thermal bulk and energetic particles from Ion Cyclotron Radiation Heating and Negative Neutral Beam Injections. After the analysis of the basic results of the orbit theory obtained with a particularly convenient orbit coordinates set, it is shown how the proposed $\\mathcal{F}_{eq}$ satisfies the two conditions that make it an equilibrium distribution function: (i) it must depend only on the constants of motion and adiabatic invariants, and (ii) the guiding centers must remain confined for suitably long time. Furthermore, the $\\mathcal{F}_{eq}$ can be modeled, with a proper choice of its parameters, to reproduce the most common distribution functions. A distribution similar to a local Maxwellian distribution function is obtained for the therm...

Di Troia, Claudio

2011-01-01T23:59:59.000Z

489

Infrared Spectra and Optical Constants of Astronomical Ices: II. Ethane and Ethylene  

E-Print Network [OSTI]

Infrared spectroscopic observations have established the presence of hydrocarbon ices on Pluto and other TNOs, but the abundances of such molecules cannot be deduced without accurate optical constants (n, k) and reference spectra. In this paper we present our recent measurements of near- and mid-infrared optical constants for ethane (C$_2$H$_6$) and ethylene (C$_2$H$_4$) in multiple ice phases and at multiple temperatures. As in our recent work on acetylene (C$_2$H$_2$), we also report new measurements of the index of refraction of each ice at 670 nm. Comparisons are made to earlier work where possible, and electronic versions of our new results are made available.

Hudson, R L; Moore, M H

2015-01-01T23:59:59.000Z

490

Phenomenology of Gravitational Aether as a solution to the Old Cosmological Constant Problem  

E-Print Network [OSTI]

One of the deepest and most long-standing mysteries in physics has been the huge discrepancy between the observed vacuum density and our expectations from theories of high energy physics, which has been dubbed the Old Cosmological Constant problem. One proposal to address this puzzle at the semi-classical level is to decouple quantum vacuum from space-time geometry via a modification of gravity that includes an incompressible fluid, known as Gravitational Aether. In this paper, we discuss classical predictions of this theory along with its compatibility with cosmological and experimental tests of gravity. We argue that deviations from General Relativity (GR) in this theory are sourced by pressure or vorticity. In particular, the theory predicts that the gravitational constant for radiation is 33% larger than that of non-relativistic matter, which is preferred by (most) cosmic microwave background (CMB), Lyman-Alpha forest, and Lithium-7 primordial abundance observations, while being consistent with other cosm...

Aslanbeigi, Siavash; Foster, Brendan Z; Kohri, Kazunori; Afshordi, Niayesh

2011-01-01T23:59:59.000Z

491

Dielectric constant of He3 near the liquid-vapor critical point  

Science Journals Connector (OSTI)

High-resolution measurements of the static dielectric constant ? along the critical isochoe are reported for He3 in the region of the critical point. The experiments were conducted at a frequency of 1000 Hz and the purpose was to observe a divergence of (???T)?c as Tc is approached from above. No evidence for a critical anomaly was found, the estimated upper bound for its integrated value being ???410-8 which is consistent with the theoretical estimations. Hence, the recently reported enhancement in ?? for SF6 over that predicted by theory is not observed in He3. In the Appendix, some experimental questions arising in such constant-density experiments are discussed.

Ted Doiron and Horst Meyer

1978-03-01T23:59:59.000Z

492

The Oklo Natural Reactor and the Time Variability of the Fundamental Constants of Nature  

SciTech Connect (OSTI)

Natural nuclear reactors? Changes in the speed of light? If either of these concepts seem implausible to you now they certainly won't once Dr. Steve Lamoreaux (LANL) delivers his SLAC Colloquium lecture in the Panofsky Auditorium on November 7th at 4:15 pm entitled The Oklo Natural Reactor and the Time Variability of the Fundamental Constants of Nature. This lecture is a rare opportunity to learn not only about Oklo's incredible natural nuclear reactors but also to gain understanding about how the present-day study of these sites may alter our understanding of fundamental constants such as the speed of light. This event is a must-see for the curious!

Lamoreaux, Steve (LANL) [LANL

2005-11-07T23:59:59.000Z

493

Analog simulations of josephson junction in a microwave field. Devil's staircase, fractal dimension, and decay constants  

SciTech Connect (OSTI)

The RSJ model of the Josephson junction in the presence of a microwave field is studied using an analog computer, with special attention to the behavior of this system near or at the critical line, where the set of substeps forms a complete devil's staircase on the I-V characteristic. A value of fractal dimension D = 0.868 +/- 0.002 is determined from 240 substeps between the winding numbers W = 0 and W = 1. Four values of decay constants are determined. The results agree very well with the prediction obtained from the one-dimensional circle map. A self-similarity graph is shown confirming that the staircase is very near the critical line. Results confirm the universal and global character of D and decay constants on the critical line, as was suggested by Jensen et al.

Kuznik, V.; Odehnal, M.

1986-12-01T23:59:59.000Z

494

Quantum adiabatic computation with a constant gap is not useful in one dimension  

SciTech Connect (OSTI)

We show that it is possible to use a classical computer to efficiently simulate the adiabatic evolution of a quantum system in one dimension with a constant spectral gap, starting the adiabatic evolution from a known initial product state. The proof relies on a recently proven area law for such systems, implying the existence of a good matrix product representation of the ground state, combined with an appropriate algorithm to update the matrix product state as the Hamiltonian is changed. This implies that adiabatic evolution with such Hamiltonians is not useful for universal quantum computation. Therefore, adiabatic algorithms which are useful for universal quantum computation either require a spectral gap tending to zero or need to be implemented in more than one dimension (we leave open the question of the computational power of adiabatic simulation with a constant gap in more than one dimension).

Hastings, Matthew [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

495

Prediction for the Cosmological Constant in Resummed Quantum Gravity and Constraints on SUSY GUT's  

E-Print Network [OSTI]

We use our resummed quantum gravity approach to Einstein's general theory of relativity in the context of the Planck scale cosmology formulation of Bonanno and Reuter to estimate the value of the cosmological constant such that \\rho_\\Lambda=(0.0024 eV)^4. We argue that the closeness of this estimate to experiment constrains susy GUT models. We discuss in turn various theoretical issues that have been raised about the approach itself as well as about the application to estimate the cosmological constant. Given the closeness of the estimate to the currently observed value, we also discuss the theoretical uncertainty in the estimate -- at this time, we argue it is still large.

B. F. L. Ward

2015-01-05T23:59:59.000Z

496

Distributed Energy Communications & Controls, Lab Activities - Summary  

SciTech Connect (OSTI)

The purpose is to develop controls for inverter-based renewable and non-renewable distributed energy systems to provide local voltage, power and power quality support for loads and the power grid. The objectives are to (1) develop adaptive controls for inverter-based distributed energy (DE) systems when there are multiple inverters on the same feeder and (2) determine the impact of high penetration high seasonal energy efficiency ratio (SEER) air conditioning (A/C) units on power systems during sub-transmission faults which can result in an A/C compressor motor stall and assess how inverter-based DE can help to mitigate the stall event. The Distributed Energy Communications & Controls Laboratory (DECC) is a unique facility for studying dynamic voltage, active power (P), non-active power (Q) and power factor control from inverter-based renewable distributed energy (DE) resources. Conventionally, inverter-based DE systems have been designed to provide constant, close to unity power factor and thus not provide any voltage support. The DECC Lab interfaces with the ORNL campus distribution system to provide actual power system testing of the controls approach. Using mathematical software tools and the DECC Lab environment, we are developing and testing local, autonomous and adaptive controls for local voltage control and P & Q control for inverter-based DE. We successfully tested our active and non-active power (P,Q) controls at the DECC laboratory along with voltage regulation controls. The new PQ control along with current limiter controls has been tested on our existing inverter test system. We have tested both non-adaptive and adaptive control modes for the PQ control. We have completed several technical papers on the approaches and results. Electric power distribution systems are experiencing outages due to a phenomenon known as fault induced delayed voltage recovery (FIDVR) due to air conditioning (A/C) compressor motor stall. Local voltage collapse from FIDVR is occurring in part because modern air-conditioner and heat pump compressor motors are much more susceptible to stalling during a voltage sag or dip than older motors. These motors can stall in less than three cycles (0.05 s) when a fault, for example, on the sub-transmission system, causes voltage on the distribution system to sag to 70% or less of nominal. We completed a new test system for A/C compressor motor stall testing at the DECC Lab. The A/C Stall test system is being used to characterize when and how compressor motors stall under low voltage and high compressor pressure conditions. However, instead of using air conditioners, we are using high efficiency heat pumps. We have gathered A/C stall characterization data for both sustained and momentary voltage sags of the test heat pump. At low enough voltage, the heat pump stalls (compressor motor stops and draws 5-6 times normal current in trying to restart) due to low inertia and low torque of the motor. For the momentary sag, we are using a fast acting contactor/switch to quickly switch from nominal to the sagged voltage in cycles.

Rizy, D Tom [ORNL

2010-01-01T23:59:59.000Z

497

Window Types | Department of Energy  

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

Window Types Window Types Window Types June 18, 2012 - 8:06am Addthis A wood-frame window with insulated window glazing. | Photo courtesy of ©iStockphoto/chandlerphoto A wood-frame window with insulated window glazing. | Photo courtesy of ©iStockphoto/chandlerphoto What does this mean for me? If you have old windows, they are likely losing large amounts of energy through the frames and glazing. By upgrading old windows, you can reduce heating and cooling costs in your home. Windows come in a number of different frame and glazing types. By combining an energy-efficient frame choice with a glazing type tailored to your climate and application, you can customize each of your home's windows. Types of Window Frames Improving the thermal resistance of the frame can contribute to a window's

498

Window Types | Department of Energy  

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

Window Types Window Types Window Types June 18, 2012 - 8:06am Addthis A wood-frame window with insulated window glazing. | Photo courtesy of ©iStockphoto/chandlerphoto A wood-frame window with insulated window glazing. | Photo courtesy of ©iStockphoto/chandlerphoto What does this mean for me? If you have old windows, they are likely losing large amounts of energy through the frames and glazing. By upgrading old windows, you can reduce heating and cooling costs in your home. Windows come in a number of different frame and glazing types. By combining an energy-efficient frame choice with a glazing type tailored to your climate and application, you can customize each of your home's windows. Types of Window Frames Improving the thermal resistance of the frame can contribute to a window's

499

Boundary integral method for quantum billiards in a constant magnetic field  

Science Journals Connector (OSTI)

We derive a boundary integral equation to compute the eigenvalues of two-dimensional billiards subjected to a magnetic field. The integral requires the Green's function of the boundary-free problem with the magnetic field pointing in the opposite direction. This Green's function is computed for the case of a constant magnetic field perpendicular to the billiard and some applications are discussed. The elliptical billiard is then studied numerically as an example of a nontrivial application.

M. L. Tiago; T. O. de Carvalho; M. A. M. de Aguiar

1997-01-01T23:59:59.000Z

500

The decay constants f(B+) and f(D+) from three-flavor lattice QCD  

SciTech Connect (OSTI)

We present new results for f{sub B+} and f{sub D+} from the MILC 2+1 flavor a = 0.09fm 'fine' lattice. We use clover heavy quarks in the Fermilab interpretation and improved staggered light quarks. Lattice results from partially quenched QCD fix the parameters of staggered chiral perturbation theory which is used in the extrapolation to the physical decay constants.

Bernard, C.; /Washington U., St. Louis; DeTar, Carleton; Levkova, L.; /Utah U.; Di Pierro, Massimo; /DePaul U.; El-Khadra, Aida Xenia; Evans, R.T.; Jain, R.; /Illinois U., Urbana; Freeland, Elizabeth Dawn; /Art Inst. of Chicago; Gottlieb, Steven A.; /Indiana U.; Heller, Urs M.; /APS, New York; Hetrick, James E.; /U. Pacific, Stockton /Fermilab /Simon Fraser U. /Arizona U. /UC, Santa Barbara

2006-01-01T23:59:59.000Z