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1

Free-energy power expansion for orientationally ordered phases: Energy and entropy  

Science Journals Connector (OSTI)

We propose an approach to the description of orientational phase transitions that utilizes the specific features of orientational energy and entropy. The approach is applied to building a model for nematic phases in materials with nonpolar parallelepiped-type molecules with symmetry D2h. The model operates with complex order parameters, generalizes the Landau–de Gennes theory, and predicts the existence of a biaxial nematic phase for the fourth-order expansion of free energy.

Sergij V. Shiyanovskii

2013-06-17T23:59:59.000Z

2

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

SciTech Connect (OSTI)

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

NONE

1995-12-01T23:59:59.000Z

3

Phase structure of topological insulators by lattice strong-coupling expansion  

E-Print Network [OSTI]

The effect of the strong electron correlation on the topological phase structure of 2-dimensional (2D) and 3D topological insulators is investigated, in terms of lattice gauge theory. The effective model for noninteracting system is constructed similarly to the lattice fermions with the Wilson term, corresponding to the spin-orbit coupling. Introducing the electron-electron interaction as the coupling to the gauge field, we analyze the behavior of emergent orders by the strong coupling expansion methods. We show that there appears a new phase with the in-plane antiferromagnetic order in the 2D topological insulator, which is similar to the so-called "Aoki phase" in lattice QCD with Wilson fermions. In the 3D case, on the other hand, there does not appear such a new phase, and the electron correlation results in the shift of the phase boundary between the topological phase and the normal phase.

Yasufumi Araki; Taro Kimura; Akihiko Sekine; Kentaro Nomura; Takashi Z. Nakano

2013-11-15T23:59:59.000Z

4

Temperature dependence of the thermal expansivity and the specific heat near the nematic-isotropic (NI) phase transition in PAA  

Science Journals Connector (OSTI)

Temperature dependence of the thermal expansivity ?p and the specific heat Cp has been studied for the nematic-isotropic (NI) phase transition (TNI = 133.9 °C) of PAA. Our calculated thermal expansivity is in good agreement with the prediction of Maier and Saupe. Our calculated specific heat is compared with the experimental Cp near the transition temperature TNI. Above and below TNI, calculated and observed Cp exhibit some discrepancies for PAA. Discrepancies may be due to the approximations used in our analysis given here.

E. Kilit; H. Yurtseven

2008-01-01T23:59:59.000Z

5

Energy density and volume expansion in solid-liquid phase change, for energy applications.  

E-Print Network [OSTI]

?? Phase change materials (PCMs) have long been studied as thermal energy storage media. However, the Swedish company, Exencotech AB, reaching beyond this usual scope… (more)

Pan, Ruijun

2013-01-01T23:59:59.000Z

6

High-temperature series expansions to fourth order with a multiple-exchange Hamiltonian for both bcc and hcp phases of solid He3  

Science Journals Connector (OSTI)

The high-temperature series expansions with a multiple-exchange Hamiltonian including the most important two, three, and four-particle exchange processes for the bcc and hcp phases of solid He3 are calculated up to fourth order in ?=1/kBT, with arbitrary magnetic field. The series for the susceptibility are derived and compared to the experimental results. For bcc He3 an excellent agreement is obtained with the third- and fourth-order Padé approximants, using the phenomenological parameters formerly published. For hcp He3, we show that the Curie-Weiss temperature ? has been underestimated for the largest molar volumes and propose more accurate fits in better agreement with earlier nuclear-magnetic-resonance estimates.

M. Roger; E. Suaudeau; M. E. R. Bernier

1987-02-01T23:59:59.000Z

7

Invest -An Investment Assistant http://web.mit.edu/manoli/invest/www/invest.html 1 of 11 11/18/2003 5:50 PM  

E-Print Network [OSTI]

Invest - An Investment Assistant http://web.mit.edu/manoli/invest/www/invest.html 1 of 11 11/18/2003 5:50 PM Invest - An Investment Assistant 6.038 Final Project - AI in Practice Manolis Kamvysselis. Introduction The of the project is to build an investment assistant. The purpose is not to have the computer

Kellis, Manolis

8

Phase structure of a generalized Nambu Jona-Lasinio model with Wilson fermions in the mean field or large $N$-expansion  

E-Print Network [OSTI]

We analyze the vacuum structure of a generalized lattice Nambu--Jona-Lasinio model with two flavors of Wilson fermions, such that its continuum action is the most general four-fermion action with 'trivial' color interactions, and having a $SU(2)_V x SU(2)_A$ symmetry in the chiral limit. The phase structure of this model in the space of the two four-fermion couplings shows, in addition to the standard Aoki phases, new phases with $ != 0$, in close analogy to similar results recently suggested by some of us for lattice QCD with two degenerate Wilson fermions. This result shows how the phase structure of an effective model for low energy QCD cannot be entirely understood from Wilson Chiral Perturbation Theory, based on the standard QCD chiral effective Lagrangian approach.

V. Azcoiti; G. Di Carlo; E. Follana; M. Giordano; A. Vaquero

2013-05-08T23:59:59.000Z

9

Magnus expansion generator  

Science Journals Connector (OSTI)

A recursion formula for the Magnus expansion is presented which can be used to deduce higher-order terms and to investigate their properties. The application of this formula is illustrated with several examples which were motivated by NMR spectroscopy.

D. P. Burum

1981-10-01T23:59:59.000Z

10

The Universe Adventure - Expansion  

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

Expansion: Chunk-by-Chunk Expansion: Chunk-by-Chunk A sample of the Universe. A very small portion of the Universe. In order to better understand the significance of expansion, let's look at a cubic sample of space. By considering a finite volume we can follow changes in the size of the Universe as we move forwards and backwards in time. Remember, only the size of the cube will change. The galaxies inside the cube stay the same size. This animation illustrates how our cubic piece of the Universe changes with time. If the Universe followed the simplest expansionary models, its size would increase linearly with time. The Universe would continue to expand at a constant rate forever. If you look at only a narrow time-slice of the Universe's history, it does, in fact, appear that this is how the Universe

11

Chemical Plant Expansion  

Science Journals Connector (OSTI)

Despite $4 billion of capital expenditure for plant expansion over the past seven years, a high level of construction activity is expected to continue ... A marked increase in capital expenditures of t h e six largest chemical companies tooïç place in 1951 over 1950. ...

JOHN M. WEISS

1952-06-09T23:59:59.000Z

12

Static gas expansion cooler  

DOE Patents [OSTI]

Disclosed is a cooler for television cameras and other temperature sensitive equipment. The cooler uses compressed gas ehich is accelerated to a high velocity by passing it through flow passageways having nozzle portions which expand the gas. This acceleration and expansion causes the gas to undergo a decrease in temperature thereby cooling the cooler body and adjacent temperature sensitive equipment.

Guzek, J.C.; Lujan, R.A.

1984-01-01T23:59:59.000Z

13

Inhomogeneity implies accelerated expansion  

Science Journals Connector (OSTI)

The Einstein equations for an inhomogeneous irrotational dust universe are analyzed. A set of mild assumptions, all of which are shared by the standard Friedmann-Lemaitre-Robertson-Walker–type scenarios, results in a model that depends only on the distribution of scalar spatial curvature. If the shape of this distribution is made to fit the structure of the present Universe, with most of the matter in galaxy clusters and very little in the voids that will eventually dominate the volume, then there is a period of accelerated expansion after cluster formation, even in the absence of a cosmological constant.

Harald Skarke

2014-02-10T23:59:59.000Z

14

Load regulating expansion fixture  

DOE Patents [OSTI]

A free standing self contained device for bonding ultra thin metallic films, such as 0.001 inch beryllium foils is disclosed. The device will regulate to a predetermined load for solid state bonding when heated to a bonding temperature. The device includes a load regulating feature, whereby the expansion stresses generated for bonding are regulated and self adjusting. The load regulator comprises a pair of friction isolators with a plurality of annealed copper members located therebetween. The device, with the load regulator, will adjust to and maintain a stress level needed to successfully and economically complete a leak tight bond without damaging thin foils or other delicate components. 1 fig.

Wagner, L.M.; Strum, M.J.

1998-12-15T23:59:59.000Z

15

Load regulating expansion fixture  

DOE Patents [OSTI]

A free standing self contained device for bonding ultra thin metallic films, such as 0.001 inch beryllium foils. The device will regulate to a predetermined load for solid state bonding when heated to a bonding temperature. The device includes a load regulating feature, whereby the expansion stresses generated for bonding are regulated and self adjusting. The load regulator comprises a pair of friction isolators with a plurality of annealed copper members located therebetween. The device, with the load regulator, will adjust to and maintain a stress level needed to successfully and economically complete a leak tight bond without damaging thin foils or other delicate components.

Wagner, Lawrence M. (San Jose, CA); Strum, Michael J. (San Jose, CA)

1998-01-01T23:59:59.000Z

16

Thermal Expansion of Confined Water  

Science Journals Connector (OSTI)

Typical results for expansion measurements on the bulk liquid, reported in ref 3, agreed with the handbook values with errors DOE Contract DEFG 02-97ER45642. ...

Shuangyan Xu; George W. Scherer; T. S. Mahadevan; Stephen H. Garofalini

2009-03-10T23:59:59.000Z

17

Ising expansion for the Hubbard model  

Science Journals Connector (OSTI)

We develop series expansions for the ground state properties of the Hubbard model by introducing an Ising anisotropy into the Hamiltonian. For the two-dimensional square lattice half-filled Hubbard model, the ground state energy, local moment, sublattice magnetization, uniform magnetic susceptibility, and spin stiffness are calculated as a function of U/t, where U is the Coulomb constant and t is the hopping parameter. Magnetic susceptibility data indicate a crossover around U?4 between spin density wave antiferromagnetism and Heisenberg antiferromagnetism. Comparisons with Monte Carlo simulations, random phase approximation result, and mean-field solutions are also made.

Zhu-Pei Shi and Rajiv R. P. Singh

1995-10-01T23:59:59.000Z

18

Crossroads Expansion | Open Energy Information  

Open Energy Info (EERE)

Expansion Expansion Jump to: navigation, search Name Crossroads Expansion Facility Crossroads Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Oklahoma Gas & Electric Developer RES Americas Energy Purchaser Oklahoma Gas & Electric Coordinates 36.021°, -98.667° 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":36.021,"lon":-98.667,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

19

Clocking the Early Universe's Expansion  

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

Expansion Calculations Performed at NERSC Help Scientists Close in on the Nature of Dark Energy April 17, 2014 Margie Wylie, mwylie@lbl.gov, +1 510 486 7421 NERSC PI: David...

20

Thermal expansion of SOFC materials  

Science Journals Connector (OSTI)

A short overview is given for the thermal expansion of solid oxide fuel cell materials. The thermomechanical compatibility of state-of-the-art materials is compared with alternative, new materials. With these ...

F. Tietz

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Cumulant expansion for studying damped quantum solitons  

Science Journals Connector (OSTI)

The quantum statistics of damped optical solitons is studied using cumulant-expansion techniques. The effect of absorption is described in terms of ordinary Markovian relaxation theory, by coupling the optical field to a continuum of reservoir modes. After introduction of local bosonic field operators and spatial discretization, pseudo-Fokker-Planck equations for multidimensional s-parametrized phase-space functions are derived. These partial differential equations are equivalent to an infinite set of ordinary differential equations for the cumulants of the phase-space functions. Introducing an appropriate truncation condition, the resulting finite set of cumulant evolution equations can be solved numerically. Solutions are presented in a Gaussian approximation and the quantum noise is calculated, with special emphasis on squeezing and the recently measured spectral photon-number correlations [Spälter et al., Phys. Rev. Lett. 81, 786 (1998)].

Eduard Schmidt; Ludwig Knöll; Dirk-Gunnar Welsch

1999-03-01T23:59:59.000Z

22

Critical point anomalies include expansion shock waves  

SciTech Connect (OSTI)

From first-principle fluid dynamics, complemented by a rigorous state equation accounting for critical anomalies, we discovered that expansion shock waves may occur in the vicinity of the liquid-vapor critical point in the two-phase region. Due to universality of near-critical thermodynamics, the result is valid for any common pure fluid in which molecular interactions are only short-range, namely, for so-called 3-dimensional Ising-like systems, and under the assumption of thermodynamic equilibrium. In addition to rarefaction shock waves, diverse non-classical effects are admissible, including composite compressive shock-fan-shock waves, due to the change of sign of the fundamental derivative of gasdynamics.

Nannan, N. R., E-mail: ryan.nannan@uvs.edu [Mechanical Engineering Discipline, Anton de Kom University of Suriname, Leysweg 86, PO Box 9212, Paramaribo, Suriname and Process and Energy Department, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft (Netherlands); Guardone, A., E-mail: alberto.guardone@polimi.it [Department of Aerospace Science and Technology, Politecnico di Milano, Via La Masa 34, 20156 Milano (Italy); Colonna, P., E-mail: p.colonna@tudelft.nl [Propulsion and Power, Delft University of Technology, Kluyverweg 1, 2629 HS Delft (Netherlands)

2014-02-15T23:59:59.000Z

23

Cluster expansion, multichannel scattering, and the optical potential  

Science Journals Connector (OSTI)

This paper investigates approximate solutions for the few-body multichannel reaction problem. In the context of the three-body scattering problem, we extend the cluster expansion formalism that is based on the Karlsson-Zeiger integral equations. The decoupling scheme developed by Bollé and Kuzmichev is modified to extract the elastic channel optical potential. The utility and rate of convergence of the cluster expansion is tested in a model three-boson problem. The interactions for the model problem are chosen to include elastic, inelastic, and rearrangement channels. It is found that only a few terms of the cluster expansion are needed to reproduce the exact three-body solutions and that cusp singularity effects which appear in the phase shift at channel thresholds are accounted for accurately.NUCLEAR REACTIONS Three-body problem. Cluster representations. Optical potential. Threshold singularities. Approximation methods.

D. Eyre; T. A. Osborn; J. P. Svenne

1981-12-01T23:59:59.000Z

24

Phenomenological theories of ferroelectric phase transitions  

E-Print Network [OSTI]

Phenomenological theories of ferroelectric phase transitions W. Cao parameter in the free energy expansion, phenomenological theory can also describe inhomogeneous structures appear-Phenomenological parent and product phases. phenomenological theories in multidimensions for describ-Phenomenological

Cao, Wenwu

25

Cosmic antifriction and accelerated expansion  

Science Journals Connector (OSTI)

We explain an accelerated expansion of the present Universe, suggested from observations of supernovae of type Ia at high redshift, by introducing an antifrictional force that is self-consistently exerted on the particles of the cosmic substratum. Cosmic antifriction, which is intimately related to “particle production,” is shown to give rise to an effective negative pressure of the cosmic medium. While other explanations for an accelerated expansion (cosmological constant, quintessence) introduce a component of dark energy in addition to “standard” cold dark matter (CDM) we resort to a phenomenological one-component model of CDM with internal self-interactions. We demonstrate how the dynamics of the cold dark matter model with a cosmological constant may be recovered as a special case of cosmic antifriction. We discuss the connection with two-component models and obtain an attractor behavior for the ratio of the energy densities of both components which provides a possible phenomenological solution to the coincidence problem.

Winfried Zimdahl; Dominik J. Schwarz; Alexander B. Balakin; Diego Pavón

2001-08-03T23:59:59.000Z

26

1/N expansion in noncommutative quantum mechanics  

SciTech Connect (OSTI)

We study the 1/N expansion in noncommutative quantum mechanics for the anharmonic and Coulombian potentials. The expansion for the anharmonic oscillator presented good convergence properties, but for the Coulombian potential, we found a divergent large N expansion when using the usual noncommutative generalization of the potential. We proposed a modified version of the noncommutative Coulombian potential which provides a well-behaved 1/N expansion.

Ferrari, A. F. [Universidade Federal do ABC, Centro de Ciencias Naturais e Humanas, Rua Santa Adelia, 166, 09210-170, Santo Andre, SP (Brazil); Gomes, M.; Stechhahn, C. A. [Instituto de Fisica, Universidade de Sao Paulo, Caixa Postal 66318, 05315-970, Sao Paulo - SP (Brazil)

2010-08-15T23:59:59.000Z

27

Indian Policy and Westward Expansion  

E-Print Network [OSTI]

Transition in Indian Policy, 1840-48 85 First settlements in Oregon—Oregon Trail, roads and military- posts—Santa Fé Trail and the southwestern commerce—Pur chase of right of way for Oregon Trail recommended—Organi zation of Oregon and Nebraska proposed...—Effect on Indian policy. Development of the Four Great Factors, 1848-5J? 40 Westward Expansion and Settlement of the Pacific Coast 41 Summary o£ early period—Population when organized—Oregon emigration after 1848—California emigration after 1848—Re lation...

Malin, James Claude

1921-11-01T23:59:59.000Z

28

High thermal expansion, sealing glass  

DOE Patents [OSTI]

A glass composition is described for hermetically sealing to high thermal expansion materials such as aluminum alloys, stainless steels, copper, and copper/beryllium alloys, which includes between about 10 and about 25 mole percent Na[sub 2]O, between about 10 and about 25 mole percent K[sub 2]O, between about 5 and about 15 mole percent Al[sub 2]O[sub 3], between about 35 and about 50 mole percent P[sub 2]O[sub 5] and between about 5 and about 15 mole percent of one of PbO, BaO, and mixtures thereof. The composition, which may also include between 0 and about 5 mole percent Fe[sub 2]O[sub 3] and between 0 and about 10 mole percent B[sub 2]O[sub 3], has a thermal expansion coefficient in a range of between about 160 and 210[times]10[sup [minus]7]/C and a dissolution rate in a range of between about 2[times]10[sup [minus]7] and 2[times]10[sup [minus]9]g/cm[sup 2]-min. This composition is suitable to hermetically seal to metallic electrical components which will be subjected to humid environments over an extended period of time.

Brow, R.K.; Kovacic, L.

1993-11-16T23:59:59.000Z

29

Cosmic Growth History and Expansion History  

E-Print Network [OSTI]

of the expansion history dark energy equation of state,and growth history constraints on the dark energy equationand growth history constraints on the dark energy equation

Linder, Eric V.

2009-01-01T23:59:59.000Z

30

Generation capacity expansion in restructured energy markets.  

E-Print Network [OSTI]

??With a significant number of states in the U.S. and countries around the world trading electricity in restructured markets, a sizeable proportion of capacity expansion… (more)

Nanduri, Vishnuteja

2009-01-01T23:59:59.000Z

31

Viscosity of the QGP from a virial expansion  

SciTech Connect (OSTI)

In this work we calculate the shear viscosity {eta} in the quark-gluon plasma within a virial expansion approach with particular interest in the ratio of {eta} to the entropy density s, i.e. {eta}/s. We derive a realistic equation of state using a virial expansion approach which allows us to include the interactions between the partons in the deconfined phase. From the interaction we directly extract the effective coupling {alpha}{sub V} for the determination of {eta}. Our results for {eta}/s show a minimum near to T{sub c} very close with the lowest bound and, furthermore, in line with the experimental point from RHIC as well as with the lattice calculations.

Mattiello, S., E-mail: stefano.mattiello@theo.physik.uni-giessen.de [University of Giessen, Institute for Theoretical Physics (Germany)

2012-06-15T23:59:59.000Z

32

Theoretical model for plasma expansion generated by hypervelocity impact  

SciTech Connect (OSTI)

The hypervelocity impact experiments of spherical LY12 aluminum projectile diameter of 6.4?mm on LY12 aluminum target thickness of 23?mm have been conducted using a two-stage light gas gun. The impact velocity of the projectile is 5.2, 5.7, and 6.3?km/s, respectively. The experimental results show that the plasma phase transition appears under the current experiment conditions, and the plasma expansion consists of accumulation, equilibrium, and attenuation. The plasma characteristic parameters decrease as the plasma expands outward and are proportional with the third power of the impact velocity, i.e., (T{sub e}, n{sub e})???v{sub p}{sup 3}. Based on the experimental results, a theoretical model on the plasma expansion is developed and the theoretical results are consistent with the experimental data.

Ju, Yuanyuan; Zhang, Qingming, E-mail: qmzhang@bit.edu.cn; Zhang, Dongjiang; Long, Renrong; Chen, Li; Huang, Fenglei [State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081 (China); Gong, Zizheng [National Key Laboratory of Science and Technology on Reliability and Environment Engineering, Beijing Institute of Spacecraft Environment Engineering, Beijing 100094 (China)

2014-09-15T23:59:59.000Z

33

Delayed Linear Expansion of Two Ultra-low Expansion Dental Stones  

E-Print Network [OSTI]

The purpose of this study was to measure the linear setting expansion of two ultra-low expansion dental stones used in definitive cast/ prosthesis fabrication which claim to have very low to no setting expansion. Five specimens of each material...

Oppedisano, Michael

2013-12-20T23:59:59.000Z

34

Multipole Expansion Model in Gravitational Lensing  

E-Print Network [OSTI]

Non-transparent models of multipole expansion model and two point-mass model are analyzed from the catastrophe theory. Singularity behaviours of $2^n$-pole moments are discussed. We apply these models to triple quasar PG1115+080 and compare with the typical transparent model, softened power law spheroids. Multipole expansion model gives the best fit among them.

T. Fukuyama; Y. Kakigi; T. Okamura

1997-01-31T23:59:59.000Z

35

On Perturbation theory improved by Strong coupling expansion  

E-Print Network [OSTI]

In theoretical physics, we sometimes have two perturbative expansions of physical quantity around different two points in parameter space. In terms of the two perturbative expansions, we introduce a new type of smooth interpolating function consistent with the both expansions, which includes the standard Pad\\'e approximant and fractional power of polynomial method constructed by Sen as special cases. We point out that we can construct enormous number of such interpolating functions in principle while the "best" approximation for the exact answer of the physical quantity should be unique among the interpolating functions. We propose a criterion to determine the "best" interpolating function, which is applicable except some situations even if we do not know the exact answer. It turns out that our criterion works for various examples including specific heat in two-dimensional Ising model, average plaquette in four-dimensional SU(3) pure Yang-Mills theory on lattice and free energy in c=1 string theory at self-dual radius. We also mention possible applications of the interpolating functions to system with phase transition.

Masazumi Honda

2014-10-13T23:59:59.000Z

36

Ocotillo Wind I Expansion | Open Energy Information  

Open Energy Info (EERE)

I Expansion I Expansion Jump to: navigation, search Name Ocotillo Wind I Expansion Facility Ocotillo Wind I Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status Under Construction Owner Pattern Energy Developer Pattern Energy Energy Purchaser San Diego Gas & Electric Location Ocotillo CA Coordinates 32.76302656°, -116.0466957° 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":32.76302656,"lon":-116.0466957,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

37

Century Wind Project Expansion | Open Energy Information  

Open Energy Info (EERE)

Project Expansion Project Expansion Jump to: navigation, search Name Century Wind Project Expansion Facility Century Wind Project Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner MidAmerican Energy Developer EnXco Energy Purchaser MidAmerican Energy Location Wright and Hamilton Counties IA Coordinates 42.509141°, -93.682151° 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":42.509141,"lon":-93.682151,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

38

Design Under Uncertainty Employing Stochastic Expansion Methods  

E-Print Network [OSTI]

Non-intrusive polynomial chaos expansion (PCE) and stochastic collocation (SC) meth- ods and ability to produce functional representations of stochastic variability. PCE estimates coefficients with both techniques for general probabilistic analysis problems. Once PCE or SC representations have been

39

Low expansion superalloy with improved toughness  

DOE Patents [OSTI]

A high strength, low coefficient of thermal expansion superalloy exhibiting improved toughness over a broad temperature range down to about 4 K is disclosed. The composition is adapted for use with wrought superconducting sheathing.

Smith, D.F.; Stein, L.I.; Hwang, I.S.

1995-06-20T23:59:59.000Z

40

ARM - Lesson Plans: Thermal Expansion of Water  

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

of sea water expands. It is this thermal expansion of the ocean water which makes the sea level rise. Recently, it was asked why a bunsen burner was heating the Erlenmeyer flask in...

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Meteorological Network Expansion Using Information Decay Concept  

Science Journals Connector (OSTI)

A generalized network design methodology was developed by using the basic entropy concept introduced by Shannon in communication engineering. In order to select potential sites for meteorological network expansion purposes, the meteorological ...

Tahir Husain; Mustafa A. Ukayli; Hasin U. Khan

1986-03-01T23:59:59.000Z

42

Flat Ridge 2 Expansion | Open Energy Information  

Open Energy Info (EERE)

Flat Ridge 2 Expansion Flat Ridge 2 Expansion Jump to: navigation, search Name Flat Ridge 2 Expansion Facility Flat Ridge 2 Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner BP Wind Energy Developer BP Wind Energy Energy Purchaser Arkansas Electric Cooperative Corp Location Sharon KS Coordinates 37.383239°, -98.334088° 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":37.383239,"lon":-98.334088,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

43

Ultracold Plasma Expansion in a Magnetic Field  

Science Journals Connector (OSTI)

We measure the expansion of an ultracold plasma across the field lines of a uniform magnetic field. We image the ion distribution by extracting the ions with a high-voltage pulse onto a position-sensitive detector. Early in the lifetime of the plasma (magnetic field (up to 70 G). We observe that the expansion velocity scales as B-1/2, explained by a nonlinear ambipolar diffusion model with anisotropic diffusion in two different directions.

X. L. Zhang; R. S. Fletcher; S. L. Rolston; P. N. Guzdar; M. Swisdak

2008-06-13T23:59:59.000Z

44

Expansion of Novolyte Capacity for Lithium Ion Electrolyte Production...  

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

15eswise2012p.pdf More Documents & Publications Expansion of Novolyte Capacity for Lithium Ion Electrolyte Production Expansion of Novolyte Capacity for Lithium Ion Electrolyte...

45

Expansion of Novolyte Capacity for Lithium Ion Electrolyte Production...  

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

15eswise2011p.pdf More Documents & Publications Expansion of Novolyte Capacity for Lithium Ion Electrolyte Production Expansion of Novolyte Capacity for Lithium Ion Electrolyte...

46

Expansion and Improvement of Solar Water Heating Technology in...  

Open Energy Info (EERE)

Expansion and Improvement of Solar Water Heating Technology in China Project Management Office Jump to: navigation, search Name: Expansion and Improvement of Solar Water Heating...

47

Effects of restraint on expansion due to delayed ettringite formation  

Science Journals Connector (OSTI)

Delayed ettringite formation (DEF) is a chemical reaction that causes expansion in civil engineering structures. The safety level of such damaged structures has to be reassessed. To do this, the mechanical conditions acting on DEF expansions have to be analysed and, in particular, the variation of strength with expansion and the effect of restraint on the DEF expansion. This paper highlights several points: DEF expansion is isotropic in stress-free conditions, compressive stresses decrease DEF expansion in the direction subjected to restraint and lead to cracks parallel to the restraint, and expansion measured in the stress-free direction of restrained specimens is not modified. Thus restraint causes a decrease of the volumetric expansion and DEF expansion under restraint is anisotropic. Moreover, the paper examines the correlation between DEF expansion and concrete damage, providing data that can be used for the quantification of the effect of stresses on DEF induced expansion.

Hassina Bouzabata; Stéphane Multon; Alain Sellier; Hacène Houari

2012-01-01T23:59:59.000Z

48

METRIC PROPERTIES AND EXCEPTIONAL SETS OF THE OPPENHEIM EXPANSIONS  

E-Print Network [OSTI]

METRIC PROPERTIES AND EXCEPTIONAL SETS OF THE OPPENHEIM EXPANSIONS OVER THE FIELD OF LAURENT SERIES in a large class of Oppenheim expansions of Laurent series, including Luroth, Engel, Sylvester expansions properties fail to hold. Key Words and Phrases Oppenheim expansions, Laurent series, #12;nite #12;eld

Fan, Ai-Hua

49

Forward Expansion Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Forward Expansion Wind Farm Forward Expansion Wind Farm Facility Forward Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Invenergy Developer Invenergy Energy Purchaser Alliant- Wisconsin Public Service-Madison Gas & Electric- Wisconsin Public Power Location Dodge and Fond du Lac Counties WI Coordinates 43.631519°, -88.556421° 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":43.631519,"lon":-88.556421,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

50

DOE/EA-0845 Environmental Assessment Expansion  

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

45 45 Environmental Assessment Expansion of the Idaho National Engineering Laboratory Research Center March 1994 U.S. Department of Energy MASTER DOE Idaho Operations Office Idaho Falls, Idaho _.OJ Oi_lll_lHl:lUTION OF TFII$O_r, UM_._T _ U_LJ_!_3'_ [6450-01] U.S. DEPARTMENT OF ENERGY FINDINGOF NO SIGNIFICANT IMPACT . FOR EXPANSION OF THE IDAHONATIONALENGINEERING LABORATORY RESEARCH CENTER AGENCY: Department of Energy ACTION: Findingof No Significant Impact(FONSI) SUMMARY: The Department of Energy(DOE)has prepared an environmental assessment (EA),DOE/EA-0845, for expansion and upgrade of facilities at the IdahoNationalEngineering Laboratory (INEL)Research Center(IRC)in Idaho Falls,Idaho. Construction and operation of proposed facilities wouldnot causesignificant environmental impacts. Basedon the analysesin the EA, DOE has determined that the proposedactionis

51

Expansion Capital Partners LLC | Open Energy Information  

Open Energy Info (EERE)

Expansion Capital Partners LLC Expansion Capital Partners LLC Jump to: navigation, search Name Expansion Capital Partners LLC Address One Embarcadero Center, Suite 4100 Place San Francisco, California Zip 94111 Region Bay Area Product Venture capital firm that invests in expansion-stage, clean technology enterprises Year founded 2001 Phone number (415) 788-8802 Website http://www.expansioncapital.co Coordinates 37.794497°, -122.39962° 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":37.794497,"lon":-122.39962,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

52

Stateline Expansion Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Stateline Expansion Wind Farm Stateline Expansion Wind Farm Jump to: navigation, search Name Stateline Expansion Wind Farm Facility Stateline Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Energy Purchaser PPM Energy Inc Location Walla Walla County OR Coordinates 46.012769°, -118.751528° 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":46.012769,"lon":-118.751528,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

53

24 February 1999 Determining Age, Expansion and  

E-Print Network [OSTI]

To Be Younger Than Its Oldest Stars (See Fact #3). 2.) A Universe That Enlarges with Accelerating Expansion (See that of "pure" vacuum space, and the measured capacitance will increase as more and more particles are placed, vapors, nuclear particles, (quarks, wimps, and neutrinos, if they existed separately) or any

Tesfatsion, Leigh

54

Intrepid Expansion Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Intrepid Expansion Wind Farm Intrepid Expansion Wind Farm Jump to: navigation, search Name Intrepid Expansion Wind Farm Facility Intrepid Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner MidAmerican Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location Buena Vista & Sac Counties IA Coordinates 42.483311°, -95.308807° 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":42.483311,"lon":-95.308807,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

55

Exploiting External Collections for Query Expansion  

Science Journals Connector (OSTI)

A persisting challenge in the field of information retrieval is the vocabulary mismatch between a user’s information need and the relevant documents. One way of addressing this issue is to apply query modeling: to add terms to the original query ... Keywords: Query modeling, blog post retrieval, external expansion

Wouter Weerkamp; Krisztian Balog; Maarten de Rijke

2012-11-01T23:59:59.000Z

56

216-B-3 expansion ponds closure plan  

SciTech Connect (OSTI)

This document describes the activities for clean closure under the Resource Conservation and Recovery Act of 1976 (RCRA) of the 216-B-3 Expansion Ponds. The 216-B-3 Expansion Ponds are operated by the US Department of Energy, Richland Operations Office (DOE-RL) and co-operated by Westinghouse Hanford Company (Westinghouse Hanford). The 216-B-3 Expansion Ponds consists of a series of three earthen, unlined, interconnected ponds that receive waste water from various 200 East Area operating facilities. The 3A, 3B, and 3C ponds are referred to as Expansion Ponds because they expanded the capability of the B Pond System. Waste water (primarily cooling water, steam condensate, and sanitary water) from various 200 East Area facilities is discharged to the Bypass pipe (Project X-009). Water discharged to the Bypass pipe flows directly into the 216-B-3C Pond. The ponds were operated in a cascade mode, where the Main Pond overflowed into the 3A Pond and the 3A Pond overflowed into the 3C Pond. The 3B Pond has not received waste water since May 1985; however, when in operation, the 3B Pond received overflow from the 3A Pond. In the past, waste water discharges to the Expansion Ponds had the potential to have contained mixed waste (radioactive waste and dangerous waste). The radioactive portion of mixed waste has been interpreted by the US Department of Energy (DOE) to be regulated under the Atomic Energy Act of 1954; the dangerous waste portion of mixed waste is regulated under RCRA.

Not Available

1994-10-01T23:59:59.000Z

57

Expansion of Facilities on the North Slope of Alaska in Time for the  

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

Expansion of Facilities on the North Slope of Alaska in Time for the Expansion of Facilities on the North Slope of Alaska in Time for the International Polar Year Zak, Bernard Sandia National Laboratories Ivey, Mark Sandia National Laboratories Zirzow, Jeffrey Sandia National Laboratories Brower, Walter UIC Science Division ARM/NSA Ivanoff, James NSA Whiteman, Doug NSA/AAO Sassen, Kenneth University of Alaska Fairbanks Truffer-Moudra, Dana University of Alaska Fairbanks Category: Infrastructure & Outreach The International Polar Year (IPY; 2007-2008) will stimulate research in both polar regions, primarily focusing on the rapid climate-related changes occurring at high latitudes. In part in preparation for the IPY, facilities at the NSA ACRF are undergoing expansion. In addition, with funding through NOAA, Phase 1 of the planned $60M Barrow Global Climate Change Research

58

Expansion and Collapse in the Cosmic Web  

Science Journals Connector (OSTI)

We study the kinematics of the gaseous cosmic web at high redshift using Ly? forest absorption in multiple QSO sight lines. Observations of the projected velocity shifts between Ly? absorbers common to the lines of sight to a gravitationally lensed QSO and three more widely separated QSO pairs are used to directly measure the expansion of the cosmic web in units of the Hubble velocity, as a function of redshift and spatial scale. The lines of sight used span a redshift range from about 2 to 4.5 and represent transverse scales from the subkiloparsec range to about 300 h physical kpc. Using a simple analytic model and a cosmological hydrodynamic simulation, we constrain the underlying three-dimensional distribution of expansion velocities from the observed line-of-sight distribution of velocity shear across the plane of the sky. The shape of the shear distribution and its width (14.9 km s-1 rms for a physical transverse separation of 61 h kpc at z = 2, 30.0 km s-1 for 261 h kpc at z = 3.6) are found to be in good agreement with the IGM undergoing large-scale motions dominated by the Hubble flow, making this one of the most direct observations possible of the expansion of the universe. However, modeling the Ly? clouds with a simple "expanding pancake" model, the average expansion velocity of the gaseous structures causing the Ly? forest in the lower redshift (z ~ 2) smaller separation (61 kpc) sample appears about 20% lower than the local Hubble expansion velocity. In order to understand the observed velocity distribution further we investigated the statistical distribution of expansion velocities in cosmological Ly? forest simulations. The mean expansion velocity in the (z ~ 2, separation ~ 60 kpc) simulation is indeed somewhat smaller than the Hubble velocity, as found in the real data. We interpret this finding as tentative evidence for some Ly? forest clouds breaking away from the Hubble flow and undergoing the early stages of gravitational collapse. However, the distribution of velocities is highly skewed, and the majority of Ly? forest clouds at all redshifts from 2 to 3.8 expand with super-Hubble velocities, typically about 5%-20% faster than the Hubble flow. This behavior is explained if most Ly? forest clouds in the column density range typically detectable are expanding filaments that stretch and drain into more massive nodes. The significant difference seen in the velocity distributions between the high- and low-redshift samples may conceivably reflect actual peculiar deceleration, the differences in spatial scale, or our selecting higher densities at lower redshift for a given detection threshold for Ly? forest lines. We also investigate the alternative possibility that the velocity structure of the general Ly? forest could have an entirely different, local origin, as expected if the Ly? forest were produced or at least significantly modified by galactic feedback, e.g., winds from star-forming galaxies at high redshift. However, we find no evidence that the observed distribution of velocity shear is significantly influenced by processes other than Hubble expansion and gravitational instability. To avoid overly disturbing the IGM, galactic winds may be old and/or limp by the time we observe them in the Ly? forest, or they may occupy only an insignificant volume fraction of the IGM. We briefly discuss the observational evidence usually presented in favor of an IGM afflicted by high-redshift extragalactic superwinds and find much of it ambiguous. During the hierarchical buildup of structure, galaxies are expected to spill parts of their interstellar medium and to heat and stir the IGM in ways that make it hard to disentangle this gravitational process from the effects of winds.

Michael Rauch; George D. Becker; Matteo Viel; Wallace L. W. Sargent; Alain Smette; Robert A. Simcoe; Thomas A. Barlow; Martin G. Haehnelt

2005-01-01T23:59:59.000Z

59

Low thermal expansion seal ring support  

DOE Patents [OSTI]

Today, the trend is to increase the temperature of operation of gas turbine engines. To cool the components with compressor discharge air, robs air which could otherwise be used for combustion and creates a less efficient gas turbine engine. The present low thermal expansion sealing ring support system reduces the quantity of cooling air required while maintaining life and longevity of the components. Additionally, the low thermal expansion sealing ring reduces the clearance "C","C'" demanded between the interface between the sealing surface and the tip of the plurality of turbine blades. The sealing ring is supported by a plurality of support members in a manner in which the sealing ring and the plurality of support members independently expand and contract relative to each other and to other gas turbine engine components.

Dewis, David W. (San Diego, CA); Glezer, Boris (Del Mar, CA)

2000-01-01T23:59:59.000Z

60

Tests for the Expansion of the Universe  

E-Print Network [OSTI]

Almost all cosmologists accept nowadays that the redshift of the galaxies is due to the expansion of the Universe (cosmological redshift), plus some Doppler effect of peculiar motions, but can we be sure of this fact by means of some other independent cosmological test? Here I will review some recent tests: CMBR temperature versus redshift, time dilation, the Hubble diagram, the Tolman or surface brightness test, the angular size test, the UV surface brightness limit and the Alcock--Paczy\\'nski test. Some tests favour expansion and others favour a static Universe. Almost all the cosmological tests are susceptible to the evolution of galaxies and/or other effects. Tolman or angular size tests need to assume very strong evolution of galaxy sizes to fit the data with the standard cosmology, whereas the Alcock--Paczynski test, an evaluation of the ratio of observed angular size to radial/redshift size, is independent of it.

Lopez-Corredoira, Martin

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Low temperature expansion for the Ising model  

Science Journals Connector (OSTI)

On simple cubic lattices, we compute the low-temperature expansion for the energy of the Ising model through 50 excited bonds in three dimensions and 44 excited bonds in four dimensions. We also give the magnetization through 42 excited bonds. Our method is a recursive enumeration of states with given energies on a set of finite lattices with generalized helical boundary conditions. A linear combination of such lattices cancels finite volume effects.

Gyan Bhanot; Michael Creutz; Jan Lacki

1992-09-28T23:59:59.000Z

62

Accelerating cosmological expansion from shear viscosity  

E-Print Network [OSTI]

The dissipation of energy from local velocity perturbations in the cosmological fluid affects the time evolution of spatially averaged fluid dynamic fields and the cosmological solution of Einstein's field equations. We show how this backreaction effect depends on shear viscosity and other material properties of the dark sector, as well as the spectrum of perturbations. If sufficiently large, this effect could account for the acceleration of the cosmological expansion.

Floerchinger, Stefan; Wiedemann, Urs Achim

2014-01-01T23:59:59.000Z

63

Shock compression and expansion in central collisions  

SciTech Connect (OSTI)

Physics of central symmetric reactions of heavy nuclei, in the beam energy range from few tens of MeV to a couple of GeV per nucleon, is discussed. Within transport simulations, it is shown that shock fronts perpendicular to the beam axis form in the head-on reactions. The fronts propagate into projectile and target and they separate hot compressed matter from normal matter. With an increase of the impact parameter, the angle of inclination of fronts relative to the beam axis decreases, and in-between the fronts a weak tangential discontinuity develops. Hot matter exposed to the vacuum in directions perpendicular to the shock motion (and parallel to fronts), starts to expand sideways, early within reactions. Expansion in the direction of shock motion follows, after the shocks traverse nuclei, but due to the delay does not acquire same strength. Expansion affects angular distributions and mean-energy components, and further shapes of spectra and mean energies of different particles emitted into any one direction, and also particle yields. Both the anisotropy in the expansion and a collective motion associated with the weak discontinuity, affect the magnitude of sideward flow within reaction plane. Differences in mean particle energy components in and out of the reaction plane in semicentral collisions, depend sensitively on the relative magnitude of shock speed in normal matter and speed of sound in hot matter. The missing energy, considered in the past in association with low measured pion-multiplicity in central reactions, may be identified with the energy of collective expansion.

Danielewicz, P. [Univ. of Washington, Seattle, WA (United States). Institute for Nuclear Theory]|[Michigan State Univ., East Lansing, MI (United States)

1995-01-01T23:59:59.000Z

64

Statement from Energy Secretary Samuel W. Bodman on the Expansion...  

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

the Expansion of the Strategic Petroleum Reserve to 1.5 Billion Statement from Energy Secretary Samuel W. Bodman on the Expansion of the Strategic Petroleum Reserve to 1.5 Billion...

65

Clean Technology for Diesel Expansion | Department of Energy  

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

Technology for Diesel Expansion Clean Technology for Diesel Expansion Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE...

66

ORIGINAL PAPER Crystal chemistry, thermal expansion, and Raman spectra  

E-Print Network [OSTI]

along the brucite­forsterite join, linear regression gives a systematic linear decrease in expansivity expansion Á Iron effect Introduction The dense hydrous magnesium silicate (DHMS) minerals along the brucite

Jacobsen, Steven D.

67

Earth pressures and deformations in civil infrastructure in expansive soils  

E-Print Network [OSTI]

This dissertation includes the three major parts of the study: volume change, and lateral earth pressure due to suction change in expansive clay soils, and design of civil infrastructure drilled pier, retaining wall and pavement in expansive soils...

Hong, Gyeong Taek

2008-10-10T23:59:59.000Z

68

Thermal and electrostrictive expansion characteristics of MLC (Multilayer Ceramic) capacitors  

SciTech Connect (OSTI)

We have measured by strain gauge technique, in-plane thermal expansivity (coefficient of thermal expansion) as a function of temperature and electrostrictive expansion as a function of applied DC voltage for ceramic capacitors with X7R, NPO and N1500 dielectrics. Multilayer Ceramic (MLC) capacitor materials from two commercial suppliers were evaluated. Thermal expansivities of these materials were compared to polyimide-quartz boards and alumina ceramic substrates. 4 refs., 9 figs., 1 tab.

Chanchani, R.; Hall, C.A.

1991-01-01T23:59:59.000Z

69

Exploring Small-Scale Meat Processing Expansions in Iowa  

E-Print Network [OSTI]

Exploring Small-Scale Meat Processing Expansions in Iowa A Technical Report Submitted@iastate.edu #12;2Exploring Small-Scale Meat Processing Expansions in Iowa April 2011 Overview of Findings Iowa;3Exploring Small-Scale Meat Processing Expansions in Iowa April 2011 Introduction Iowa is a national leader

Debinski, Diane M.

70

Lattice-structures and constructs with designed thermal expansion coefficients  

SciTech Connect (OSTI)

A thermal expansion-managed lattice structure having a plurality of unit cells each having flexure bearing-mounted tabs supported on a base and actuated by thermal expansion of an actuator having a thermal expansion coefficient greater than the base and arranged so that the tab is inwardly displaced into a base cavity. The flexure bearing-mounted tabs are connected to other flexure-bearing-mounted tabs of adjacent unit cells so that the adjacent unit cells are spaced from each other to accommodate thermal expansion of individual unit cells while maintaining a desired bulk thermal expansion coefficient of the lattice structure as a whole.

Spadaccini, Christopher; Hopkins, Jonathan

2014-10-28T23:59:59.000Z

71

Accelerating cycle expansions by dynamical conjugacy  

E-Print Network [OSTI]

Periodic orbit theory provides two important functions---the dynamical zeta function and the spectral determinant for the calculation of dynamical averages in a nonlinear system. Their cycle expansions converge rapidly when the system is uniformly hyperbolic but greatly slowed down in the presence of non-hyperbolicity. We find that the slow convergence can be associated with singularities in the natural measure. A properly designed coordinate transformation may remove these singularities and results in a dynamically conjugate system where fast convergence is restored. The technique is successfully demonstrated on several examples of one-dimensional maps and some remaining challenges are discussed.

Ang Gao; Jianbo Xie; Yueheng Lan

2011-06-06T23:59:59.000Z

72

Calculations of Surface Thermal-Expansion  

E-Print Network [OSTI]

, the quasiharmon- ic approximation (plus the Lennard-Jones potential) predicts values of e???which are too large. " The monic approximation (plus the Lennard- Jones poten- 0 20 40 TEMPERATURE T 60 FIG. 9. Surface thermal expansion for Xe. tial) thus tend... to cancel, so that our results are more accurate than those obtained in more rigorous calcu- lations based on the quasihar monic approximation. The bulk results shown in Figs. 1-6 were ob- tained for a slab having a (111)surface orientation...

KENNER, VE; Allen, Roland E.

1973-01-01T23:59:59.000Z

73

Phase five  

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

Phase five Phase five 1663 Los Alamos science and technology magazine Latest Issue:November 2013 All Issues » submit Phase five Los Alamos physicists have conclusively demonstrated the existence of a new phase of matter. November 25, 2013 Phase five Scientists still have more to learn about the exotic physics of specialty materials. What makes the cuprates special? How about a new phase of matter. Ceramic metals known as cuprates have mystified physicists for decades. They exhibit a variety of distinct phases of matter, each with its own specific properties, including a phase bearing an exotic type of magnetism, a high-temperature superconducting phase, an ordinary metal phase, a poorly understood and weird metallic phase simply called a strange metal, and an equally poorly understood metallic phase known as the pseudogap. The

74

Is Hubble's Expansion due to Dark Energy  

E-Print Network [OSTI]

{\\it The universe is expanding} is known (through Galaxy observations) since 1929 through Hubble's discovery ($V = H D$). Recently in 1999, it is found (through Supernovae observations) that the universe is not simply expanding but is accelerating too. We, however, hardly know only $4\\%$ of the universe. The Wilkinson Microwave Anisotropy Probe (WMAP) satellite observational data suggest $73\\%$ content of the universe in the form of dark-energy, $23\\%$ in the form of non-baryonic dark-matter and the rest $4\\%$ in the form of the usual baryonic matter. The acceleration of the universe is ascribed to this dark-energy with bizarre properties (repulsive-gravity). The question is that whether Hubble's expansion is just due to the shock of big-bang & inflation or it is due to the repulsive-gravity of dark-energy? Now, it is believed to be due to dark-energy, say, by re-introducing the once-discarded cosmological-constant $\\Lambda$. In the present paper, it is shown that `the formula for acceleration due to dark-energy' is (almost) exactly of same-form as `the acceleration formula from the Hubble's law'. Hence, it is concluded that: yes, `indeed it is the dark-energy responsible for the Hubble's expansion too, in-addition to the current on-going acceleration of the universe'.

R. C. Gupta; Anirudh Pradhan

2010-10-19T23:59:59.000Z

75

Perturbation Expa]nsion in Dynamical Nuclear Field Theory and Its Relation with Boson Expansion Theory  

Science Journals Connector (OSTI)

......Perturbation Expa]nsion in Dynamical Nuclear Field Theory and Its Relation...April 1990. With the Dynamical Nuclear Field Theory (DNFT) in the...vibrational mode of a spherical nuclear system. Due to the effects...coupling strength and boson energy fails at full self-consistency......

Teruo Kishimoto; Tetsuo Kammuri

1990-09-01T23:59:59.000Z

76

"Phase freezeout" in isentropically expanding matter  

E-Print Network [OSTI]

Features of isentropic expansion of warm dense matter (WDM) created by intense energy fluxes (strong shock compression or instant isochoric heating by laser or heavy ions) are under discussion in situation when ($i$) -- thermodynamic trajectory of such expansion crosses binodal of liquid-gas phase transition, and ($ii$) -- expansion within the two-phase region is going along equilibrium branch (not metastable one) of the two-phase mixture isentrope. It is known in the plane case that because of break in the expansion isentrope at binodal point (in $P-V$ plane) i.e. jump of sound velocity in this point, there appears extended zone ("boiling layer") of uniformity in expanding material with constant thermodynamic and kinematic parameters. It corresponds just to the state on this binodal of boiling liquid. The point is that because of self-similarity of such expansion (in plane case) this boiling layer contains finite and fixed part of whole expanding material. This property makes it possible (at least formally) ...

Iosilevskiy, Igor

2014-01-01T23:59:59.000Z

77

EMPIRE ULTIMATE EXPANSION: RESONANCES AND COVARIANCES.  

SciTech Connect (OSTI)

The EMPIRE code system is being extended to cover the resolved and unresolved resonance region employing proven methodology used for the production of new evaluations in the recent Atlas of Neutron Resonances. Another directions of Empire expansion are uncertainties and correlations among them. These include covariances for cross sections as well as for model parameters. In this presentation we concentrate on the KALMAN method that has been applied in EMPIRE to the fast neutron range as well as to the resonance region. We also summarize role of the EMPIRE code in the ENDF/B-VII.0 development. Finally, large scale calculations and their impact on nuclear model parameters are discussed along with the exciting perspectives offered by the parallel supercomputing.

HERMAN,M.; MUGHABGHAB, S.F.; OBLOZINSKY, P.; ROCHMAN, D.; PIGNI, M.T.; KAWANO, T.; CAPOTE, R.; ZERKIN, V.; TRKOV, A.; SIN, M.; CARSON, B.V.; WIENKE, H. CHO, Y.-S.

2007-04-22T23:59:59.000Z

78

Thermal expansion recovery microscopy: Practical design considerations  

SciTech Connect (OSTI)

A detailed study of relevant parameters for the design and operation of a photothermal microscope technique recently introduced is presented. The technique, named thermal expansion recovery microscopy (ThERM) relies in the measurement of the defocusing introduced by a surface that expands and recovers upon the heating from a modulated source. A new two lens design is presented that can be easily adapted to commercial infinite conjugate microscopes and the sensitivity to misalignment is analyzed. The way to determine the beam size by means of a focus scan and the use of that same scan to verify if a thermoreflectance signal is overlapping with the desired ThERM mechanism are discussed. Finally, a method to cancel the thermoreflectance signal by an adequate choice of a nanometric coating is presented.

Mingolo, N., E-mail: nmingol@fi.uba.ar; Martínez, O. E. [Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colon 850, 1063 Buenos Aires (Argentina)] [Facultad de Ingeniería, Universidad de Buenos Aires, Paseo Colon 850, 1063 Buenos Aires (Argentina)

2014-01-15T23:59:59.000Z

79

OMV studies ethylene expansion in Germany  

SciTech Connect (OSTI)

OMV(Vienna) is evaluating plans to debottleneck its ethylene plant at Burghausen from 310,000 m.t./year to at least 400,000 m.t./year. Senior v.p. Jochen Berger says OMV is studying the limits to which the cracker can be expanded. {open_quotes}We`re pretty sure we can go to 400,000 m.t./year, but in two months we`ll have a better idea,{close_quotes} says Berger. The expansion will also depend on the future requirements of downstream operations at the Burghausen site, which include OMV plastics subsidiary PCD`s high-density polyethylene and polypropylene units and the vinyl chloride monomer and polyvinyl chloride units operated by Hoechst-Wacker joint venture Vinnolit.

NONE

1996-10-23T23:59:59.000Z

80

Energy Infrastructure Events and Expansions Year-in-Review 2011 |  

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

Infrastructure Events and Expansions Year-in-Review 2011 Infrastructure Events and Expansions Year-in-Review 2011 Energy Infrastructure Events and Expansions Year-in-Review 2011 The 2011 Year-in-Review (YIR) provides a summary of significant energy disruptions and infrastructure changes that occurred in the United States throughout 2011. The focus is on the United States, but international events that impacted the United States are also reported. The 2011 YIR is based primarily on information reported in the Energy Assurance Daily (EAD) between January 1, 2011 and December 31, 2011. Energy Infrastructure Events and Expansions Year-in-Review 2011.pdf More Documents & Publications Year-in-Review: 2012 Energy Infrastructure Events and Expansions (July 2013) Energy Infrastructure Events and Expansions Year-in-Review 2010

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Shear viscosity of the Quark-Gluon Plasma from a virial expansion  

E-Print Network [OSTI]

We calculate the shear viscosity $\\eta$ in the quark-gluon plasma (QGP) phase within a virial expansion approach with particular interest in the ratio of $\\eta$ to the entropy density $s$, i.e. $\\eta/s$. The virial expansion approach allows us to include the interactions between the partons in the deconfined phase and to evaluate the corrections to a single-particle partition function. In the latter approach we start with an effective interaction with parameters fixed to reproduce thermodynamical quantities of QCD such as energy and/or entropy density. We also directly extract the effective coupling $\\ga_{\\rm V}$ for the determination of $\\eta$. Our numerical results give a ratio $\\eta/s\\approx 0.097$ at the critical temperature $T_{\\rm c}$, which is very close to the theoretical bound of $1/(4\\pi)$. Furthermore, for temperatures $T\\leq 1.8 T_{\\rm c}$ the ratio $\\eta/s$ is in the range of the present experimental estimates $0.1-0.3$ at RHIC. When combining our results for $\\eta/s$ in the deconfined phase with those from chiral perturbation theory or the resonance gas model in the confined phase we observe a pronounced minimum of $\\eta/s$ close to the critical temperature $T_{\\rm c}$.

S. Mattiello; W. Cassing

2009-11-24T23:59:59.000Z

82

Double acting stirling engine phase control  

DOE Patents [OSTI]

A mechanical device for effecting a phase change between the expansion and compression volumes of a double-acting Stirling engine uses helical elements which produce opposite rotation of a pair of crankpins when a control rod is moved, so the phase between two pairs of pistons is changed by +.psi. and the phase between the other two pairs of pistons is changed by -.psi.. The phase can change beyond .psi.=90.degree. at which regenerative braking and then reversal of engine rotation occurs.

Berchowitz, David M. (Scotia, NY)

1983-01-01T23:59:59.000Z

83

PHOTOSPHERIC RADIUS EXPANSION IN SUPERBURST PRECURSORS FROM NEUTRON STARS  

SciTech Connect (OSTI)

Thermonuclear runaway burning of carbon is in rare cases observed from accreting neutron stars as day-long X-ray flares called superbursts. In the few cases where the onset is observed, superbursts exhibit a short precursor burst at the start. In each instance, however, the data are of insufficient quality for spectral analysis of the precursor. Using data from the propane anti-coincidence detector of the Proportional Counter Array instrument on the Rossi X-ray Timing Explorer, we perform the first detailed time-resolved spectroscopy of precursors. For a superburst from 4U 1820-30 we demonstrate the presence of photospheric radius expansion. We find the precursor to be 1.4-2 times more energetic than other short bursts from this source, indicating that the burning of accreted helium is insufficient to explain the full precursor. Shock heating would be able to account for the shortfall in energy. We argue that this precursor is a strong indication that the superburst starts as a detonation, and that a shock induces the precursor. Furthermore, we employ our technique to study the superexpansion phase of the same superburst in greater detail.

Keek, L., E-mail: keek@nscl.msu.edu [National Superconducting Cyclotron Laboratory, Department of Physics and Astronomy, and Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 (United States)

2012-09-10T23:59:59.000Z

84

Española entrepreneur breaks ground; expansion will create 50...  

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

Espaola entrepreneur breaks ground; expansion will create 50 new jobs Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:...

85

Small distance expansion for radiative heat transfer between curved objects  

E-Print Network [OSTI]

We develop a small distance expansion for the radiative heat transfer between gently curved objects, in terms of the ratio of distance to radius of curvature. A gradient expansion allows us to go beyond the lowest order proximity transfer approximation. The range of validity of such expansion depends on temperature as well as material properties. Generally, the expansion converges faster for the derivative of the transfer than for the transfer itself, which we use by introducing a near-field adjusted plot. For the case of a sphere and a plate, the logarithmic correction to the leading term has a very small prefactor for all materials investigated.

Vladyslav A. Golyk; Matthias Krüger; Alexander P. McCauley; Mehran Kardar

2012-10-12T23:59:59.000Z

86

Heat Flow Database Expansion for NGDS Data Development, Collection...  

Open Energy Info (EERE)

Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Heat Flow Database Expansion for NGDS Data Development, Collection and Maintenance Project...

87

Observational evidence for poleward expansion of the Hadley circulation  

Science Journals Connector (OSTI)

How the Hadley circulation changes in response to global climate ... consistent and statistically significant poleward expansion of the Hadley circulation in the past few decades is ... independent observational ...

Yongyun Hu ???; Chen Zhou ? ?; Jiping Liu ???

2011-01-01T23:59:59.000Z

88

Load Expansion with Diesel/Gasoline RCCI for Improved Engine...  

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

with DieselGasoline RCCI for Improved Engine Efficiency and Emissions Load Expansion with DieselGasoline RCCI for Improved Engine Efficiency and Emissions This poster will...

89

On the Use of Pade Forms for Postprocessing Polynomial Expansion  

E-Print Network [OSTI]

... postprocessing the Gegenbauer expansion using the Pade forms. This work was done in collaboration with Laura Lurati (IMA/Boeing) and Sidi Kaber (Paris VI).

90

ALUMINUM--2003 5.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

, about 1.5 million metric tons per year (Mt/yr) of domestic primary aluminum smelting capacity, including idled potlines at operating smelters, equivalent to about 35% of total capacity, was closed. Aluminum and the container and packaging industries remained the leading markets for aluminum products in Canada

91

phase coherence  

Science Journals Connector (OSTI)

The state in which two signals, such as electronic or optical signals, maintain (a) a fixed phase relationship with each other or (b) a fixed phase relationship with a third signal that can serve as a referenc...

2001-01-01T23:59:59.000Z

92

The effective pyroelectric and thermal expansion coefficients of ferroelectric ceramics  

E-Print Network [OSTI]

The effective pyroelectric and thermal expansion coefficients of ferroelectric ceramics JiangYu Li an estimate on the effective pyroelectric and thermal expansion coefficients of fer- roelectric ceramics, and thermal-medical diagnostics (Cross, 1993). A ceramic made of pyroelectric grains does not necessarily

Li, Jiangyu

93

Expansion of a plasma cloud into the solar wind  

E-Print Network [OSTI]

Three-dimensional (3D) hybrid particle-in-cell (PIC) simulations, with kinetic ions and fluid electrons, of a plasma cloud expansion in the solar wind are presented, revealing the dynamics of the expansion, with shock formation, magnetic field compression, and the solar wind ions deflection around the plasma bubble. The similarities of this system with a magnetosphere are also pointed out.

Gargaté, L; Bingham, R; Silva, L O

2008-01-01T23:59:59.000Z

94

ON PROVING FUTURE STABILITY OF COSMOLOGICAL SOLUTIONS WITH ACCELERATED EXPANSION  

E-Print Network [OSTI]

ON PROVING FUTURE STABILITY OF COSMOLOGICAL SOLUTIONS WITH ACCELERATED EXPANSION HANS RINGSTR at an accelerated rate. As a consequence, it is of interest to prove that cosmological solutions to Ein- stein's equations with accelerated expansion are future stable. That is the topic of the present contribution

Ringström, Hans

95

POSITIVITY CASES, ESTIMATES AND ASYMPTOTIC EXPANSIONS FOR CONDENSER CAPACITIES.  

E-Print Network [OSTI]

POSITIVITY CASES, ESTIMATES AND ASYMPTOTIC EXPANSIONS FOR CONDENSER CAPACITIES. ALAIN BONNAF´E Abstract. We study positivity cases, estimates and asymptotic expansions of condenser p the internal part of the condenser has a non-empty interior. The study of the point and its approximation

Boyer, Edmond

96

EA-1934: Expansion of Active Borrow Areas, Hanford Site, Richland,  

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

EA-1934: Expansion of Active Borrow Areas, Hanford Site, Richland, EA-1934: Expansion of Active Borrow Areas, Hanford Site, Richland, Washington EA-1934: Expansion of Active Borrow Areas, Hanford Site, Richland, Washington SUMMARY This EA evaluates the potential environmental impacts of expansion or continued use of existing sand and gravel pits located on the Hanford Site (Pits F, H, N, 6, 9, 18, 21, 23, 24, 30, and 34) and establishing one new borrow area source in the 100 Area for ongoing construction activities and fill material following remediation activities. The scope of this EA does not include borrow sources for silt-loam material. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD August 15, 2013 EA-1934: Mitigation Action Plan Expansion of Active Borrow Areas, Hanford Site, Richland, Washington

97

EA-1934: Expansion of Active Borrow Areas, Hanford Site, Richland,  

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

4: Expansion of Active Borrow Areas, Hanford Site, Richland, 4: Expansion of Active Borrow Areas, Hanford Site, Richland, Washington EA-1934: Expansion of Active Borrow Areas, Hanford Site, Richland, Washington SUMMARY This EA evaluates the potential environmental impacts of expansion or continued use of existing sand and gravel pits located on the Hanford Site (Pits F, H, N, 6, 9, 18, 21, 23, 24, 30, and 34) and establishing one new borrow area source in the 100 Area for ongoing construction activities and fill material following remediation activities. The scope of this EA does not include borrow sources for silt-loam material. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD August 15, 2013 EA-1934: Mitigation Action Plan Expansion of Active Borrow Areas, Hanford Site, Richland, Washington

98

Zambia-Long-Term Generation Expansion Study | Open Energy Information  

Open Energy Info (EERE)

Zambia-Long-Term Generation Expansion Study Zambia-Long-Term Generation Expansion Study Jump to: navigation, search Logo: Zambia-Long-Term Generation Expansion Study Name Zambia-Long-Term Generation Expansion Study Agency/Company /Organization Argonne National Laboratory Sector Energy Topics Implementation, GHG inventory, Background analysis Resource Type Software/modeling tools, Lessons learned/best practices Website http://www.dis.anl.gov/pubs/61 Country Zambia UN Region Eastern Africa References Zambia-Long-Term Generation Expansion Study[1] Abstract The objective of this study is to analyze possible long-term development options of the Zambian electric power system in the period up to 2015. Overview "The objective of this study is to analyze possible long-term development options of the Zambian electric power system in the period up to 2015. The

99

Tanzania Energy Development and Access Expansion Project | Open Energy  

Open Energy Info (EERE)

Energy Development and Access Expansion Project Energy Development and Access Expansion Project Jump to: navigation, search Name of project Tanzania Energy Development and Access Expansion Project Location of project Tanzania Energy Services Lighting, Cooking and water heating, Space heating, Cooling Year initiated 2007 Organization World Bank Website http://documents.worldbank.org Coordinates -6.369028°, 34.888822° References The World Bank[1] The objective of the Energy Development and Access Expansion Project of Tanzania is to improve the quality and efficiency of the electricity service provision in the three main growth centers of Dar es Salaam, Arusha, and Kilimanjaro and to establish a sustainable basis for energy access expansion. The project is consistent with the latest Joint Assistance Strategy (2007-2010) by specifically supporting the goals of the

100

Energy Infrastructure Events and Expansions Year-in-Review 2010 |  

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

Infrastructure Events and Expansions Year-in-Review 2010 Infrastructure Events and Expansions Year-in-Review 2010 Energy Infrastructure Events and Expansions Year-in-Review 2010 The Year-in-Review provides an overview of the events that occurred in 2010: disruptions and additions to energy infrastructure in the United States as well as international events of importance to U.S. energy supplies. The report is the culminating analysis of all of the 2010 issues of the Energy Assurance Daily (EAD). Energy Infrastructure Events and Expansions Year-in-Review 2010.pdf More Documents & Publications Energy Infrastructure Events and Expansions Year-in-Review 2011 Hardening and Resiliency: U.S. Energy Industry Response to Recent Hurricane Seasons - August 2010 Comparing the Impacts of the 2005 and 2008 Hurricanes on U.S. Energy

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Supersymmetric inversion of effective-range expansions  

E-Print Network [OSTI]

A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

Bikashkali Midya; Jérémie Evrard; Sylvain Abramowicz; O. L. Ramírez Suárez; Jean-Marc Sparenberg

2015-01-16T23:59:59.000Z

102

Supersymmetric inversion of effective-range expansions  

E-Print Network [OSTI]

A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Pad\\'e expanded, which allows high precision fitting of the experimental scattering phase shifts with a minimal number of parameters on a large energy range. Second, the corresponding poles of the scattering matrix are extracted in the complex wave-number plane. Third, the interaction potential is constructed with supersymmetric transformations of the radial Schr\\"odinger equation. As an illustration, the method is applied to the experimental phase shifts of the neutron-proton elastic scattering in the $^1S_0$ and $^1D_2$ channels on the $[0-350]$ MeV laboratory energy interval.

Midya, Bikashkali; Abramowicz, Sylvain; Suárez, O L Ramírez; Sparenberg, Jean-Marc

2015-01-01T23:59:59.000Z

103

Large order aspects of delta-expansion in low dimensional Ising models  

E-Print Network [OSTI]

We investigate the large order aspects of the delta-expansion under the estimation procession of the critical quantities. As illustrative examples, we revisit one-dimensional Ising model for the analytic study and two-dimensional square Ising model in the high temperature phase for the numerical experiment to large orders. In both models, proposed fundamental base on which the estimation protocol should be constructed is investigated in details and confirmed to be valid. In the square lattice model, we present a new protocol for the estimation of critical exponents and temperature.

Yamada, Hirofumi

2014-01-01T23:59:59.000Z

104

Nonlinear bulk viscosity and the stability of accelerated expansion in FRW spacetime  

E-Print Network [OSTI]

In the context of dark energy solutions, we consider a Friedmann-Robertson-Walker spacetime filled with a non-interacting mixture of dust and a viscous fluid, whose bulk viscosity is governed by the nonlinear model proposed in [15]. Through a phase space analysis of the equivalent dynamical system, existence and stability of critical solutions are established and the respective scale factors are computed. The results point towards the possibility of describing the current accelerated expansion of the Universe by means of the abovementioned nonlinear model for viscosity.

G. Acquaviva; A. Beesham

2014-05-14T23:59:59.000Z

105

Local gravitational physics of the Hubble expansion  

E-Print Network [OSTI]

We study physical consequences of the Hubble expansion of FLRW manifold on measurement of space, time and light propagation in the local inertial frame. We analyse the solar system radar ranging and Doppler tracking experiments, and time synchronization. FLRW manifold is covered by global coordinates (t,y^i), where t is the cosmic time coinciding with the proper time of the Hubble observers. We introduce local inertial coordinates x^a=(x^0,x^i) in the vicinity of a world line of a Hubble observer with the help of a special conformal transformation. The local inertial metric is Minkowski flat and is materialized by the congruence of time-like geodesics of static observers being at rest with respect to the local spatial coordinates x^i. We consider geodesic motion of test particles and notice that the local coordinate time x^0=x^0(t) taken as a parameter along the world line of particle, is a function of the Hubble's observer time t. This function changes smoothly from x^0=t for a particle at rest (observer's clock), to x^0=t+1/2 Ht^2 for photons, where H is the Hubble constant. Thus, motion of a test particle is non-uniform when its world line is parametrized by time t. NASA JPL Orbit Determination Program presumes that motion of light (after the Shapiro delay is excluded) is uniform with respect to the time t but it does not comply with the non-uniform motion of light on cosmological manifold. For this reason, the motion of light in the solar system analysed with the Orbit Determination Program appears as having a systematic blue shift of frequency, of radio waves circulating in the Earth-spacecraft radio link. The magnitude of the anomalous blue shift of frequency is proportional to the Hubble constant H that may open an access to the measurement of this fundamental cosmological parameter in the solar system radiowave experiments.

Sergei Kopeikin

2015-01-21T23:59:59.000Z

106

First-principles study on negative thermal expansion of PbTiO{sub 3}  

SciTech Connect (OSTI)

It is well known that perovskite-type PbTiO{sub 3} behaves negative thermal expansion in a wide temperature range from room temperature to Curie temperature (763?K). The present study reports the first-principles study of the anisotropic thermal expansion of PbTiO{sub 3}, in the framework of the density-functional theory and the density-functional perturbation theory. The curve of temperature dependence of the unit cell volume is presented from 20 to 520?K through the calculation of the minimum of total free energy at each temperature point. The negative thermal expansion of PbTiO{sub 3} is calculated without empirical parameters. Furthermore, the distinctive thermodynamic act of PbTiO{sub 3} from expanding to contracting at tetragonal phase is reproduced. The ab-initio calculations reveal that this unique appearance depends on the phonon vibration. The dynamical contributions of various atoms are also calculated to account for the disparate role of Pb-O and Ti-O bond.

Wang, Fangfang; Chen, Jun; Xing, Xianran, E-mail: xing@ustb.edu.cn [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 (China)] [Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083 (China); Xie, Ying; Fu, Honggang [Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (China)] [Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080 (China)

2013-11-25T23:59:59.000Z

107

Nuclear Fusion Drives Present-Day Accelerated Cosmic Expansion  

SciTech Connect (OSTI)

The widely accepted model of our cosmos is that it began from a Big Bang event some 13.7 billion years ago from a single point source. From a twin universe perspective, the standard stellar model of nuclear fusion can account for the Dark Energy needed to explain the mechanism for our present-day accelerated expansion. The same theories can also be used to account for the rapid inflationary expansion at the earliest time of creation, and predict the future cosmic expansion rate.

Ying, Leong [Princeton Gamma-Tech Instruments, 303C College Road East, Princeton, NJ 07030 (United States)

2010-09-30T23:59:59.000Z

108

Multipole expansions of electromagnetic fields using Debye potentials  

Science Journals Connector (OSTI)

The Debye potentials are introduced by giving new derivations of the multipole expansions of the magnetostatic and electrostatic fields. Simplified derivations of the multipole expansions of the electrodynamic fields are then given. The radiated energy momentum and angular momentum are all calculated in the same manner i.e. using the proper transport equations. The questions of uniqueness and completeness of the Debye potential representations of the fields are discussed. In the Appendices are collected together some useful vector fieldtheorems and operator identities involving the angular momentum operator and also simplified derivations of the spherical harmonic expansions of the static and dynamic Green functions.

C. G. Gray

1978-01-01T23:59:59.000Z

109

On equivalence of high temperature series expansion and coupling parameter series expansion in thermodynamic perturbation theory of fluids  

SciTech Connect (OSTI)

The coupling parameter series expansion and the high temperature series expansion in the thermodynamic perturbation theory of fluids are shown to be equivalent if the interaction potential is pairwise additive. As a consequence, for the class of fluids with the potential having a hardcore repulsion, if the hard-sphere fluid is chosen as reference system, the terms of coupling parameter series expansion for radial distribution function, direct correlation function, and Helmholtz free energy follow a scaling law with temperature. The scaling law is confirmed by application to square-well fluids.

Sai Venkata Ramana, A., E-mail: asaivenk@barc.gov.in [Theoretical Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India)

2014-04-21T23:59:59.000Z

110

Stetson Wind Expansion Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Stetson Wind Expansion Wind Farm Stetson Wind Expansion Wind Farm Jump to: navigation, search Name Stetson Wind Expansion Wind Farm Facility Stetson Wind Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner First Wind Developer First Wind Location Washington County ME Coordinates 45.595833°, -67.928628° 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":45.595833,"lon":-67.928628,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

111

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio |  

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

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio May 24, 2012 - 5:08pm Addthis Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs What does this project do? DuPont's newly expanded solar manufacturing plant in Circleville, Ohio, produces thin film materials to strengthen the durability of solar panels. To support the expansion project, DuPont created 70 new operational

112

DOE Announces Expansion and Solicitation for Entrepreneur in Residence  

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

Expansion and Solicitation for Entrepreneur in Expansion and Solicitation for Entrepreneur in Residence Program DOE Announces Expansion and Solicitation for Entrepreneur in Residence Program November 19, 2008 - 4:58pm Addthis Entrepreneurs Accelerate Deployment of Advanced Clean Energy Technologies from DOE's Labs to the Marketplace WASHINGTON - U.S. Department of Energy (DOE) Secretary Samuel W. Bodman today announced a competitive solicitation for five venture capital firms to participate in the expansion of DOE's Entrepreneur in Residence (EIR) program, that aims to accelerate deployment and commercialization of advanced clean energy technologies from DOE's National Laboratories. EIR furthers President Bush's comprehensive strategy to reduce our nation's dependence on foreign oil and reduce greenhouse gas emissions by empowering

113

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio |  

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

Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio Energy At Work: Plant Expansion Creates Job Opportunities in Ohio May 24, 2012 - 5:08pm Addthis Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Wade Reichelderfer is among the recent hires at DuPont's newly expanded solar manufacturing plant in Circleville, Ohio. | Photo courtesy of DuPont. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs What does this project do? DuPont's newly expanded solar manufacturing plant in Circleville, Ohio, produces thin film materials to strengthen the durability of solar panels. To support the expansion project, DuPont created 70 new operational

114

Partnership in Assisting Community Expansion (PACE) Program (North Dakota)  

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

Partnership in Assisting Community Expansion (PACE) Program (North Partnership in Assisting Community Expansion (PACE) Program (North Dakota) Partnership in Assisting Community Expansion (PACE) Program (North Dakota) < Back Eligibility Commercial Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Dakota Program Type Loan Program The Partnership in Assisting Community Expansion (PACE) Program is available to finance the purchase of equipment or real estate, as well as term working capital. In conjunction with community support, the program provides an interest buy down that can reduce the borrower's rate of interest by as much as 5%. This buy down can mean an interest savings of approximately $462,000 over the term of the loan. In return, the borrower

115

Financial Analysis of Electric Sector Expansion Plans (FINPLAN) | Open  

Open Energy Info (EERE)

Financial Analysis of Electric Sector Expansion Plans (FINPLAN) Financial Analysis of Electric Sector Expansion Plans (FINPLAN) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Financial Analysis of Electric Sector Expansion Plans (FINPLAN) Agency/Company /Organization: International Atomic Energy Agency Sector: Energy Focus Area: Renewable Energy, Energy Efficiency Topics: Market analysis Resource Type: Software/modeling tools Website: www-tc.iaea.org/tcweb/abouttc/strategy/Thematic/pdf/presentations/ener References: Overview of IAEA PESS Models [1] "In developing countries, financial constraints are often the most important obstacle to implementing optimal electricity expansion plans. FINPLAN helps assess the financial viability of plans and projects. It takes into account different financial sources - including export credits,

116

Major Business Expansion Bond Program (Maine) | Department of Energy  

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

Expansion Bond Program (Maine) Expansion Bond Program (Maine) Major Business Expansion Bond Program (Maine) < Back Eligibility Commercial Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Maine Program Type Bond Program Provider Finance Authority of Maine The Major Business Expansion Bond Program provides long-term, credit-enhanced financing up to $25,000,000 at taxable bond rates for businesses creating or retaining at least 50 jobs; up to $10,000,000 is available for businesses which expand their manufacturing services. The bond proceeds may be used to acquire real estate, machinery, equipment, or rehabilitate or expand an existing facility. The interest rate is determined by market forces at the time of the bond sale

117

Train track expansions of measured foliations February 16, 2003  

E-Print Network [OSTI]

Train track expansions of measured foliations Lee Mosher February 16, 2003 Contents 1 Introduction foliations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.5 Train tracks and train track's classification of mapping classes . . . . . . . . . . . . . . 47 3 Train tracks 49 3.1 Pretracks

Mosher, Lee

118

Train track expansions of measured foliations December 28, 2003  

E-Print Network [OSTI]

Train track expansions of measured foliations Lee Mosher December 28, 2003 Contents 1 Introduction foliations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.5 Train tracks and train track's classification of mapping classes . . . . . . . . . . . . . . 53 3 Train tracks 55 3.1 Pretracks

Mosher, Lee

119

Lattice Boltzmann boundary conditions via singular forces: irregular expansion analysis  

E-Print Network [OSTI]

Lattice Boltzmann boundary conditions via singular forces: irregular expansion analysis. We benchmark the method on lattice Boltzmann flows past a rigid disk, comparing its numerical performances with standard boundary condition approaches. Key words: lattice Boltzmann method, boundary

120

Query Expansion Using a Collection Dependent Probabilistic Latent Semantic Thesaurus  

Science Journals Connector (OSTI)

Many queries on collections of text documents are too short to produce informative results. Automatic query expansion is a method of adding terms to the query without interaction from the user in order to obtain ...

Laurence A. F. Park; Kotagiri Ramamohanarao

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Impact of GHG Emission Reduction on Power Generation Expansion Planning  

Science Journals Connector (OSTI)

In this work the impact of greenhouse gas (GHG) emission reduction on Power Generation Expansion Planning ... models, which also consider environmental constraints and GHG emission limits, is presented. After a s...

F. Careri; C. Genesi; P. Marannino; M. Montagna…

2012-01-01T23:59:59.000Z

122

Graph Expansion, Tseitin Formulas and Resolution Proofs for CSP  

Science Journals Connector (OSTI)

We study the resolution complexity of Tseitin formulas over arbitrary rings in terms of combinatorial properties of graphs. We give some evidence that an expansion of a graph is a good characterization of the ...

Dmitry Itsykson; Vsevolod Oparin

2013-01-01T23:59:59.000Z

123

CX: Categorical Determination-Alcoa Tennessee Automotive Sheet Expansion Project  

Broader source: Energy.gov [DOE]

Categorical Determination Alcoa Tennessee Automotive Sheet Expansion Project CX(s) Applied: B1.31 Date: 05/06/2014 Location(s): Alcoa, Tennessee Offices(s): Loan Programs Office

124

On the Born-Oppenheimer expansion for polyatomic molecules  

Science Journals Connector (OSTI)

We consider the Schrödinger operatorP(h) for a polyatomic molecule in the semiclassical limit where the mass ratioh 2 of electronic to nuclear mass tends to zero. We obtain WKB-type expansions of ...

M. Klein; A. Martinez; R. Seiler; X. P. Wang

125

Development of High Expansion Ratio Helium Turbo Expander  

Science Journals Connector (OSTI)

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

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

1991-01-01T23:59:59.000Z

126

Pressure recovery in a radiused sudden expansion Barton L. Smith  

E-Print Network [OSTI]

Pressure recovery in a radiused sudden expansion Barton L. Smith Abstract Experiments on a steady were motivated by a similar study for oscillatory flow in the same geometry. Smith and Swift (2003

Smith, Barton L.

127

How are Feynman graphs resumed by the Loop Vertex Expansion?  

E-Print Network [OSTI]

The purpose of this short letter is to clarify which set of pieces of Feynman graphs are resummed in a Loop Vertex Expansion, and to formulate a conjecture on the $\\phi^4$ theory in non-integer dimension.

Vincent Rivasseau; Zhituo Wang

2010-06-23T23:59:59.000Z

128

Generation and transmission expansion planning for renewable energy integration  

SciTech Connect (OSTI)

In recent years the expansion planning problem has become increasingly complex. As expansion planning (sometimes called composite or integrated resource planning) is a non-linear and non-convex optimization problem, researchers have traditionally focused on approximate models of power flows to solve the problem. The problem has also been split into generation expansion planning (GEP) and transmission network expansion planning (TNEP) to improve computational tractability. Until recently these approximations have produced results that are straight-forward to combine and adapt to the more complex and complete problem. However, the power grid is evolving towards a state where the adaptations are no longer easy (e.g. large amounts of limited control, renewable generation, comparable generation and transmission construction costs) and necessitates new approaches. Recent work on deterministic Discrepancy Bounded Local Search (DBLS) has shown it to be quite effective in addressing the TNEP. In this paper, we propose a generalization of DBLS to handle simultaneous generation and transmission planning.

Bent, Russell W [Los Alamos National Laboratory; Berscheid, Alan [Los Alamos National Laboratory; Toole, G. Loren [Los Alamos National Laboratory

2010-11-30T23:59:59.000Z

129

Eikonal Approximation in AdS/CFT: Resumming the Gravitational Loop Expansion  

E-Print Network [OSTI]

We derive an eikonal approximation to high energy interactions in Anti-de Sitter spacetime, by generalizing a position space derivation of the eikonal amplitude in flat space. We are able to resum, in terms of a generalized phase shift, ladder and cross ladder graphs associated to the exchange of a spin j field, to all orders in the coupling constant. Using the AdS/CFT correspondence, the resulting amplitude determines the behavior of the dual conformal field theory four point function for small values of the cross ratios, in a Lorentzian regime. Finally we show that the phase shift is dominated by graviton exchange and computes, in the dual CFT, the anomalous dimension of the double trace primary operators O_1 \\partial ... \\partial O_2 of large dimension and spin, corresponding to the relative motion of the two interacting particles. The results are valid at strong t'Hooft coupling and are exact in the 1/N expansion.

Lorenzo Cornalba; Miguel S. Costa; Joao Penedones

2007-12-06T23:59:59.000Z

130

Effect of ettringite morphology on DEF-related expansion  

Science Journals Connector (OSTI)

In this study, time dependent ettringite formation in heat-cured mortars has been investigated. In order to clarify the effect of formation place and morphology of ettringite on expansion, secondary electron images of cracked surfaces of mortars at three ages were analysed by SEM–EDS. Also, the X-ray microtomography analysis has been performed to observe the crack formation. The expansive role of delayed formed ettringite was related with its time dependent morphology as a function of formation place. From these observations, mechanism of ettringite reformation after heat curing has been proposed. Alumina rich species were the primary sources of ettringite formation as the starting nuclei. At later ages, if S and Al sources are readily available, the mentioned alumina rich nuclei will grow up and build ball ettringite. At long term, ball type ettringites (non-expansive) converted to massive type (expansive). These conversions can only take places if the form of available space is narrow (preformed micro-cracks). Massive ettringites exert pressure in these narrow spaces and cause expansion of mortar. If the form of the available space is spherical (entrapped air voids) ball ettringites preserve their initial form and do not cause any expansion.

Kamile Tosun; Bülent Baradan

2010-01-01T23:59:59.000Z

131

The Political History of Hydraulic Fracturing’s Expansion Across the West  

E-Print Network [OSTI]

Political History of Hydraulic Fracturing’s Expansion AcrossPolitical History of Hydraulic Fracturing’s Expansion Acrosss use of the hydraulic fracturing development process.

Forbis, Robert E.

2014-01-01T23:59:59.000Z

132

Hypersonic expansion of the Fokker--Planck equation  

SciTech Connect (OSTI)

A systematic study of the hypersonic limit of a heavy species diluted in a much lighter gas is made via the Fokker--Planck equation governing its velocity distribution function. In particular, two different hypersonic expansions of the Fokker--Planck equation are considered, differing from each other in the momentum equation of the heavy gas used as the basis of the expansion: in the first of them, the pressure tensor is neglected in that equation while, in the second expansion, the pressure tensor term is retained. The expansions are valid when the light gas Mach number is O(1) or larger and the difference between the mean velocities of light and heavy components is small compared to the light gas thermal speed. They can be applied away from regions where the spatial gradient of the distribution function is very large, but it is not restricted with respect to the temporal derivative of the distribution function. The hydrodynamic equations corresponding to the lowest order of both expansions constitute two different hypersonic closures of the moment equations. For the subsequent orders in the expansions, closed sets of moment equations (hydrodynamic equations) are given. Special emphasis is made on the order of magnitude of the errors of the lowest-order hydrodynamic quantities. It is shown that if the heat flux vanishes initially, these errors are smaller than one might have expected from the ordinary scaling of the hypersonic closure. Also it is found that the normal solution of both expansions is a Gaussian distribution at the lowest order.

Fernandez-Feria, R.

1989-02-01T23:59:59.000Z

133

Coherent Phase Argument for Inflation  

E-Print Network [OSTI]

Cosmologists have developed a phenomenally successful picture of structure in the universe based on the idea that the universe expanded exponentially in its earliest moments. There are three pieces of evidence for this exponential expansion -- {\\it inflation} -- from observations of anisotropies in the cosmic microwave background. First, the shape of the primordial spectrum is very similar to that predicted by generic inflation models. Second, the angular scale at which the first acoustic peak appears is consistent with the flat universe predicted by inflation. Here I describe the third piece of evidence, perhaps the most convincing of all: the phase coherence needed to account for the clear peak/trough structure observed by the WMAP satellite and its predecessors. I also discuss alternatives to inflation that have been proposed recently and explain how they produce coherent phases.

Scott Dodelson

2003-09-05T23:59:59.000Z

134

Sustainability Fact Sheet for Reser Stadium Expansion (Phase1) Oregon State University, Corvallis, Oregon  

E-Print Network [OSTI]

efficiency motors are used for HVAC equipment. A high efficiency condensing type boiler is used as the first of high efficiency and standard irrigation technology was used in conjunction with a centrally controlled phosphorus in storm water runoff. · The Energy Star compliant white roof, with high emissivity and high

Escher, Christine

135

Toxics Release Inventory Expansion Rule Phase 3 (TRI-P3)  

SciTech Connect (OSTI)

The ORR [East Tennessee Technology Park (ETTP), Y-12 Plant, and Oak Ridge National Laboratory (ORNL)] is considered a single facility for reporting by the DOE prime contractors. The processing, manufacturing, or "otherwise use" Section313 chemicals are combined to determine TRI reportability. Such is the case with lead metal, which is one of two chemicals for which reportin~ forms were prepared in this pilot study (Task 2;1. The lead shop at ORNL exceeded the reporting threshold, causing a lead activity at a Y-1 2 machine shop and lead in waste at ETTP to be reportable. TRI-P3 report preparation time for lead totaled 36.5 hours. The second chemical investigated and reported (chromium) also required nearly a man-week for report preparation and documentation by experienced TRI personnel. The ORR TRI report typically includes about six chemicals, so an estimate of the TRI-P3 incremental reporting burden for ORR would be six weeks for experienced personnel axI d two/three man-months for first-time ORR preparers.

Evans, R.A.; Saunders, A.D.; Worley, G.G.

1998-09-01T23:59:59.000Z

136

LowTemperature Phase Diagrams of Quantum Lattice Systems. II. Convergent Perturbation Expansions and  

E-Print Network [OSTI]

FaMAF, Universidad Nacional de C'ordoba, Ciudad Universitaria 5000 C'ordoba, Argentina. April 25)], Argentina. 4 Present address: Instituto de Matem'atica e Estat'istica, Universidade de S~ao Paulo, Caixa a unitary conjugation transforming H to a form that enables us to find its low­ energy spectrum (to some

137

Motiva Enterprises Refinery Expansion Groundbreaking | Department of Energy  

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

Enterprises Refinery Expansion Groundbreaking Enterprises Refinery Expansion Groundbreaking Motiva Enterprises Refinery Expansion Groundbreaking December 10, 2007 - 4:44pm Addthis Remarks as Prepared for Secretary Bodman Thank you, Bill. It's good to see Congressman Poe, Rob Routs, Mr. Al-Khayyal and Mayor Prince here. Thank you all for inviting me to be part of this occasion. In 1901 Texas wildcatters struck oil near here at a place called Spindletop, setting off the Texas Oil Boom. Like the California Gold Rush some 50 years before, the Texas Oil Boom helped to build America. People moved across the country in search of prosperity. To achieve it, they needed to develop new technologies and build new infrastructure like the original parts of the Port Arthur refinery, which opened here in 1903. As America's need for energy expanded as our demand for oil and gas

138

EIS-0404: Los Vaqueros Reservoir Expansion Project, California | Department  

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

404: Los Vaqueros Reservoir Expansion Project, California 404: Los Vaqueros Reservoir Expansion Project, California EIS-0404: Los Vaqueros Reservoir Expansion Project, California Summary This EIS/Environmental Impact Report was prepared by the Department of the Interior (Bureau of Reclamation, Mid-Pacific Region) and the Contra Costa Water District to evaluate the environmental impacts of a proposal to enlarge the existing Los Vaqueros Reservoir in Contra Costa County, California. DOE's Western Area Power Administration (Western) was a cooperating agency because it has jurisdiction over transmission facilities that were expected to be relocated under the proposed action. Based on project changes, however, Western has no action and therefore will not adopt the EIS or issue a ROD. Public Comment Opportunities No public comment opportunities available at this time.

139

EIS-0488: Cameron Pipeline Expansion Project and Cameron LNG Liquefaction  

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

88: Cameron Pipeline Expansion Project and Cameron LNG 88: Cameron Pipeline Expansion Project and Cameron LNG Liquefaction Project, Cameron Parish, LA EIS-0488: Cameron Pipeline Expansion Project and Cameron LNG Liquefaction Project, Cameron Parish, LA SUMMARY Federal Energy Regulatory Commission (FERC) is preparing an EIS, with DOE as a cooperating agency, to analyze the potential environmental impacts of a proposal to expand the existing Cameron Pipeline by 21 miles (from Calcasieu to Beauregard Parishes, Louisiana, with modifications in Cameron Parish), and expand an existing liquefied natural gas (LNG) import terminal in Cameron Parish, Louisiana, to enable the terminal to liquefy and export the LNG. PUBLIC COMMENT OPPORTUNITIES Comment Period Ends: 03/03/14 DOCUMENTS AVAILABLE FOR DOWNLOAD January 10, 2014

140

Heat Flow Database Expansion for NGDS Data Development, Collection and  

Open Energy Info (EERE)

Database Expansion for NGDS Data Development, Collection and Database Expansion for NGDS Data Development, Collection and Maintenance Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Heat Flow Database Expansion for NGDS Data Development, Collection and Maintenance Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Geothermal Data Development, Collection, and Maintenance Project Description In particular the efforts on document and core digitization, the recovery of the BEG geopressure data developed during the approximately $200 million project by DOE in the 1970-1980, the EGS data from the Fenton Hill experiments, and meta-data associated with US thermal mapping are crucial to be performed at this point because they are otherwise in danger of deterioration or complete loss.

Note: This page contains sample records for the topic "2003-5 expansion phase" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Mirror Film Company Has 'Concentrated' Plans for Expansion | Department of  

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

Mirror Film Company Has 'Concentrated' Plans for Expansion Mirror Film Company Has 'Concentrated' Plans for Expansion Mirror Film Company Has 'Concentrated' Plans for Expansion September 10, 2010 - 1:19pm Addthis Lorelei Laird Writer, Energy Empowers In concentrating solar power, glass is king-but it's fighting to hold on to its crown. The reflectivity of glass mirrors makes them a great choice for focusing sunlight onto a heat generator. However, the glass mirrors can be expensive and heavy -- reducing their ability to compete with conventional energy sources. ReflecTech Inc. has an option: a silvered polymer-based film that does the same job, but with half the weight and cost. Using that film, the company can make 100,000 square feet of mirror panels per year at its factory in Arvada, Colo. Through an Advanced Manufacturing 48C tax credit through the Recovery Act,

142

EIS-0488: Cameron Pipeline Expansion Project and Cameron LNG Liquefaction  

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

8: Cameron Pipeline Expansion Project and Cameron LNG 8: Cameron Pipeline Expansion Project and Cameron LNG Liquefaction Project, Cameron Parish, LA EIS-0488: Cameron Pipeline Expansion Project and Cameron LNG Liquefaction Project, Cameron Parish, LA SUMMARY Federal Energy Regulatory Commission (FERC) is preparing an EIS, with DOE as a cooperating agency, to analyze the potential environmental impacts of a proposal to expand the existing Cameron Pipeline by 21 miles (from Calcasieu to Beauregard Parishes, Louisiana, with modifications in Cameron Parish), and expand an existing liquefied natural gas (LNG) import terminal in Cameron Parish, Louisiana, to enable the terminal to liquefy and export the LNG. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD August 13, 2012 EIS-0488: Notice of Intent to Prepare an Environmental Impact Statement

143

Microsoft Word - MunroControlCenterExpansionCX.docx  

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

9, 2012 9, 2012 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Joseph Bebee TESF-CSB-2 Proposed Action: Munro Control Center Expansion Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.15 Support Buildings Location: Spokane, Washington Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: The proposed project includes a 30,000 square foot (sf) expansion to the east side of the existing building and a total of 53,500 sf of additional paved surfaces for access roads and parking to the north. All proposed activities would be on previously disturbed BPA property. The expansion of the existing Munro Control Center is to provide an alternate facility that would support critical BPA functions in the case of a major

144

Oil Production Capacity Expansion Costs for the Persian Gulf  

Gasoline and Diesel Fuel Update (EIA)

TR/0606 TR/0606 Distribution Category UC-950 Oil Production Capacity Expansion Costs For The Persian Gulf January 1996 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 Department of Energy. The information contained herein should not be construed as advocating or reflecting any policy position of the Department of Energy or any other organization. Energy Information Administration Oil Production Capacity Expansion Costs for the Persian Gulf iii Preface Oil Production Capacity Expansion Costs for the Persian Gulf provides estimates of development and operating costs for various size fields in countries surrounding the Persian

145

Expansion of the U.S. Natural Gas Pipeline Network:  

Gasoline and Diesel Fuel Update (EIA)

Expansion of the U.S. Natural Gas Pipeline Network: Expansion of the U.S. Natural Gas Pipeline Network: Additions in 2008 and Projects through 2011 This report examines new natural gas pipeline capacity added to the U.S. natural gas pipeline system during 2008. In addition, it discusses and analyzes proposed natural gas pipeline projects that may be developed between 2009 and 2011, and the market factors supporting these initiatives. Questions or comments on this article should be directed to Damien Gaul at damien.gaul@eia.doe.gov or (202) 586-2073. Robust construction of natural gas infrastructure in 2008 resulted in the completion of 84 pipeline projects in the lower 48 States, adding close to 4,000 miles of natural gas pipeline. These completions of new natural gas pipelines and expansions of existing pipelines in the United States

146

Horse Hollow Expansion Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Horse Hollow Expansion Wind Farm Horse Hollow Expansion Wind Farm Facility Horse Hollow Expansion Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Energy Purchaser Market Location Near Abilene TX Coordinates 32.243193°, -100.265633° 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":32.243193,"lon":-100.265633,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

147

Century Expansion (4Q07) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Century Expansion (4Q07) Wind Farm Century Expansion (4Q07) Wind Farm Facility Century Expansion (4Q07) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner MidAmerican Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location IA Coordinates 42.495789°, -93.652368° 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":42.495789,"lon":-93.652368,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

148

Bethe-Brueckner-Goldstone Expansion in Nuclear Matter  

Science Journals Connector (OSTI)

The equation of state of symmetric nuclear matter at zero temperature is calculated up to the three hole-line level of approximation in the Bethe-Brueckner-Goldstone expansion. Both the standard and the continuous choices for the single particle auxiliary potential are considered. The resulting equation of state shows independence from the choice of the auxiliary potential to a high degree of accuracy. This result gives strong evidence for the convergence of the expansion and establishes the nuclear matter saturation curve for the adopted nucleon-nucleon interaction, the Argonne v14 potential.

H. Q. Song; M. Baldo; G. Giansiracusa; U. Lombardo

1998-08-24T23:59:59.000Z

149

O(4) Expansion of Off-Shell Scattering Amplitudes  

Science Journals Connector (OSTI)

Using an off-mass-shell approach, we develop a method for the O(4) expansion of the scattering amplitude for two unequal-mass, arbitrary-spin particles. General-spin spherical harmonics for O(4) are constructed. With the aid of these spherical harmonics, the M amplitude is decomposed into O(4) partial waves. The prescription for obtaining the on-mass-shell helicity states from the O(4) partial waves is given. This O(4) expansion, which is valid even away from t=0, is useful in simplifying the Bethe-Salpeter equation.

W. R. Frazer, F. R. Halpern, H. M. Lipinski, and D. R. Snider

1968-12-25T23:59:59.000Z

150

Derivative expansion at small mass for the spinor effective action  

SciTech Connect (OSTI)

We study the small-mass limit of the one-loop spinor effective action, comparing the derivative expansion approximation with exact numerical results that are obtained from an extension to spinor theories of the partial-wave cutoff method. In this approach, one can compute numerically the renormalized one-loop effective action for radially separable gauge field background fields in spinor QED. We highlight an important difference between the small-mass limit of the derivative expansion for spinor and scalar theories.

Dunne, Gerald V. [Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States); Huet, Adolfo [Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States); Instituto de Fisica y Matematicas, Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan 58040 (Mexico); Hur, Jin [School of Computational Sciences, Korea Institute for Advanced Study, Seoul 130-012 (Korea, Republic of); Min, Hyunsoo [Department of Physics, University of Seoul, Seoul 130-743 (Korea, Republic of)

2011-05-15T23:59:59.000Z

151

Non-minimal Kinetic coupling to gravity and accelerated expansion  

E-Print Network [OSTI]

We study a scalar field with kinetic term coupled to itself and to the curvature, as a source of dark energy, and analyze the role of this new coupling in the accelerated expansion at large times. In the case of scalar field dominance, the scalar field and potential giving rise to power-law expansion are found in some cases, and a dynamical equation of state is calculated for a given solution of the field equations. A behavior very close to that of the cosmological constant was found.

L. N. Granda

2009-11-19T23:59:59.000Z

152

Relic gravitational waves and the cosmic accelerated expansion  

E-Print Network [OSTI]

The possibility of reconstructing the whole history of the scale factor of the Universe from the power spectrum of relic gravitational waves (RGWs) makes the study of these waves quite interesting. First, we explore the impact of a hypothetical era -right after reheating- dominated by mini black holes and radiation that may lower the spectrum several orders of magnitude. Next, we calculate the power spectrum of the RGWs taking into account the present stage of accelerated expansion and an hypothetical second dust era. Finally, we study the generalized second law of gravitational thermodynamics applied to the present era of accelerated expansion of the Universe.

German Izquierdo

2006-01-10T23:59:59.000Z

153

Century Expansion (08) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Century Expansion (08) Wind Farm Century Expansion (08) Wind Farm Jump to: navigation, search Name Century Expansion (08) Wind Farm Facility Century Expansion (08) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner MidAmerican Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location IA Coordinates 42.504142°, -93.656316° 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":42.504142,"lon":-93.656316,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

154

Technology Transfer Expansion Planned UTCA is conducting a major project  

E-Print Network [OSTI]

Technology Transfer Expansion Planned UTCA is conducting a major project to evaluate and extend its technology transfer activities (UTCA project 03217). Steven Jones and David Eckhoff of UAB are working to expand the current technology transfer program to showcase the successes of the UTCA projects. Samples

Carver, Jeffrey C.

155

Expansion of LiF under Neutron Irradiation  

Science Journals Connector (OSTI)

The strain gauge method is applied to the relative linear expansion of LiF under neutron irradiation. The result is (9.9±0.3)×10-5 per 1015 thermal neutrons. An estimate of the number of displacements is in adequate agreement with theory.

D. Binder and W. J. Sturm

1957-07-01T23:59:59.000Z

156

Thermal expansion normalization for large steam turbines in service  

SciTech Connect (OSTI)

Some large steam turbines encounter some problems with their thermal expansion. This shows itself in the broken (leap-like) movement of the bearing pedestals while the turbine is being heated or cooled in the course of transients. This also results in distortion of the casings, torsion of the foundation frame crossbars, increased vibration, damage of the bearings and couplings, etc. The thermal expansion freedom problems hamper the turbine`s start-ups since the relative rotor expansions attain their limits. The main causes why the turbine loses the thermal expansion freedom are the increased friction on the sliding surfaces between the bearing pedestals and foundation frame, increased transversal load on the turbine from the steam-lines connected to the cylinders, poor transition of the axial thrust between the cylinders, and insufficient rigidity of the foundation crossbars. Under consideration are a set of diagnostic, design, and technological measures to reveal the specific causes of the problems and to eliminate them. Among the most widespread and effective countermeasures are the placing of special fluoroplastometallic bands under the bearing pedestals and electrochemical facing of the keys` surfaces, adjustment of the support-and-suspension system and tightening of the foundation frame.

Avrutsky, G.D.; Savenkova, I.A.; Don, E.A.; Lyudomirsky, B.N.; Berezin, M.G. [All-Russia Thermal Engineering Research Inst., Moscow (Russian Federation)

1999-11-01T23:59:59.000Z

157

High-frequency expansion of the plasma dielectric tensor  

Science Journals Connector (OSTI)

We derive high-frequency sum-rule expansion for the transverse elements of the plasma dielectric tensor. The correlation contribution to the ?-4 sum-rule coefficient has a sign opposite to that of the longitudinal element. In addition, photon contributions add to the coefficient.

G. Kalman and R. Genga

1986-01-01T23:59:59.000Z

158

YOKAYO BIOFUELS, INC. GRANT FOR IMPROVEMENTS AND EXPANSION OF  

E-Print Network [OSTI]

YOKAYO BIOFUELS, INC. GRANT FOR IMPROVEMENTS AND EXPANSION OF AN EXISTING FACILITY INITIAL STUDY-11-601) to expand an existing biofuels production facility (Yokayo Biofuels, Inc.) located at 350 Orr: THE PROPOSED PROJECT: Yokayo Biofuels, Inc. is an existing biofuels facility located at 350 Orr Springs Road

159

SOME CLASSICAL EXPANSIONS FOR KNOP-SAHI AND MACDONALD POLYNOMIALS  

E-Print Network [OSTI]

SOME CLASSICAL EXPANSIONS FOR KNOP-SAHI AND MACDONALD* *t gives the non-symmetric Macdonald polynomial Eff(x; q, t). Macdonald shows that fo* *r any* * symmetrization of Effyields the Macdonald polynomial P~(x; q, t). In the original papers a* *ll

Morse, Jennifer

160

Capacity expansion analysis in a chemical plant using linear programming  

Science Journals Connector (OSTI)

An analysis of the fuel additive production process of a US mid-western chemical manufacturer is described. Material balance constraints for each potential bottleneck of the manufacturing process are included as part of a linear programming model. Several capacity expansion scenarios are evaluated. The optimal way of modifying and expanding manufacturing capacity to meet forecast demand is determined.

Kenneth H. Myers; Reuven R. Levary

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Simplified expansions for radiation from a baffled circular piston  

E-Print Network [OSTI]

Simplified expansions for radiation from a baffled circular piston T. Douglas Mast Department from a baffled circular piston continues be an active area of investigation, both as a canonical computations of piston fields in lossless and attenuative fluid media. For the region r a, where

Mast, T. Douglas

162

An extension of the linear delta expansion to superspace  

SciTech Connect (OSTI)

We introduce and discuss the method of linear delta expansion for the calculation of effective potentials in superspace, by adopting the improved version of the super-Feynman rules. Calculations are carried out up to two loops and an expression for the optimized Kaehler potential in the Wess-Zumino model is worked out.

Abdalla, M. C. B.; Senise, Carlos R. Jr. [Instituto de Fisica Teorica, UNESP, Rua Pamplona 145, Bela Vista, Sao Paulo, SP, 01405-900 (Brazil); Helayeel-Neto, J. A. [Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, Urca, Rio de Janeiro, RJ, 22290-180 (Brazil); Nedel, Daniel L. [Universidade Federal do Pampa, Rua Carlos Barbosa S/N, Bairro Getulio Vargas, 96412-420, Bage, RS (Brazil)

2008-06-15T23:59:59.000Z

163

Strong-coupling expansions for the topologically inhomogeneous Bose-Hubbard model  

SciTech Connect (OSTI)

We consider a Bose-Hubbard model with an arbitrary hopping term and provide the boundary of the insulating phase thereof in terms of third-order strong coupling perturbative expansions for the ground state energy. In the general case two previously unreported terms occur, arising from triangular loops and hopping inhomogeneities, respectively. Quite interestingly the latter involves the entire spectrum of the hopping matrix rather than its maximal eigenpair, like the remaining perturbative terms. We also show that hopping inhomogeneities produce a first order correction in the local density of bosons. Our results apply to ultracold bosons trapped in confining potentials with arbitrary topology, including the realistic case of optical superlattices with uneven hopping amplitudes. Significant examples are provided. Furthermore, our results can be extended to magnetically tuned transitions in Josephson junction arrays.

Buonsante, P.; Penna, V.; Vezzani, A. [Dipartimento di Fisica, Politecnico di Torino and INFM, Corso Duca degli Abruzzi 24, I-10129 Torino (Italy); Dipartimento di Fisica, Universita degli Studi di Parma and INFM, Parco Area delle Scienze 7/a, I-43100 Parma (Italy)

2004-11-01T23:59:59.000Z

164

Apparatus and process for the separation of gases using supersonic expansion and oblique wave compression  

DOE Patents [OSTI]

The disclosure provides an apparatus and method for gas separation through the supersonic expansion and subsequent deceleration of a gaseous stream. The gaseous constituent changes phase from the gaseous state by desublimation or condensation during the acceleration producing a collectible constituent, and an oblique shock diffuser decelerates the gaseous stream to a subsonic velocity while maintain the collectible constituent in the non-gaseous state. Following deceleration, the carrier gas and the collectible constituent at the subsonic velocity are separated by a separation means, such as a centrifugal, electrostatic, or impingement separator. In an embodiment, the gaseous stream issues from a combustion process and is comprised of N.sub.2 and CO.sub.2.

VanOsdol, John G.

2014-07-08T23:59:59.000Z

165

Negative Volume Thermal Expansion Via Orbital and Magnetic Orders in Ca2Ru1-xCrxO4(0  

Science Journals Connector (OSTI)

Ca2RuO4 undergoes a metal-insulator transition at TMI=357??K, followed by a well-separated transition to antiferromagnetic order at TN=110??K. Dilute Cr doping for Ru reduces the temperature of the orthorhombic distortion at TMI and induces ferromagnetic behavior at TC. The lattice volume V of Ca2Ru1-xCrxO4 (0expansion ?V/V?1%, which sharply contrasts the smooth temperature dependence of the few known examples of negative volume thermal expansion driven by anharmonic phonon modes. In addition, the near absence of volume thermal expansion between TC and TMI represents an Invar effect. The two phase transitions, which surprisingly mimic the classic freezing transition of water, suggest an exotic ground state driven by an extraordinary coupling between spin, orbit, and lattice degrees of freedom.

T. F. Qi, O. B. Korneta, S. Parkin, L. E. De Long, P. Schlottmann, and G. Cao

2010-10-22T23:59:59.000Z

166

Transmission investment and expansion planning in a restructured electricity market  

E-Print Network [OSTI]

such as phase shifting transformers (PST), high-voltage direct-current (HVDC) lines, and other power

Leung, Ka-Cheong

167

Microsoft Word - PearlSubExpansion_CX.docx  

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

3, 2012 3, 2012 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Johny Luiz - TEP-CSB-2 Proposed Action: Pearl Substation 500-kilovolt (kV) #6 Bay Addition Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Clackamas County, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: The proposed project includes modification of existing substation equipment, the addition of a new 500-kV Bay 6, and a one-half acre yard expansion in the southwest corner of the substation. The yard expansion area is within BPA property, consists of mowed grass, and is to facilitate a 40 square foot addition to the Pearl Control House

168

Microsoft Word - CX_DeMoss_Substation_Expansion_130531  

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

Alaric Hsu Alaric Hsu Project Manager - TEP-CSB-2 Proposed Action: De Moss Substation Expansion Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Sherman County, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to expand its De Moss Substation yard located in Sherman County, Oregon. The expansion is necessary to install additional reactors that would provide the necessary reactive support to address the extreme high voltage at De Moss Substation resulting from the loss of the Big Eddy - DeMoss transmission line during winter peak conditions. The equipment at De Moss Substation is currently sustaining voltage

169

Secretary Bodman Meets with Qatari Officials to Promote Energy Expansion  

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

Qatari Officials to Promote Energy Qatari Officials to Promote Energy Expansion Efforts Secretary Bodman Meets with Qatari Officials to Promote Energy Expansion Efforts January 22, 2008 - 10:53am Addthis Thanks U.S. Troops at Camp As-Sayliyah in Qatar for their service DOHA, QATAR - On his fourth stop of a six-nation swing through the Middle East and Europe, U.S. Secretary of Energy Samuel W. Bodman today met with Qatari Amir H.H. Sheikh Hamad Bin Khalifa Al Thani and Qatari Deputy Prime Minister and Energy Minister Abdullah Al-Attiyah to discuss the importance of investments to expand oil and natural gas production, protect critical energy infrastructure as well as promote research and development to diversify world energy supplies. Secretary Bodman also visited U.S. troops at Camp As-Sayliyah to convey the respect and appreciation of the

170

Dynamic sub-transmission substation expansion planning using learning automata  

Science Journals Connector (OSTI)

This paper presents a new method to solve the dynamic sub-transmission substation expansion planning (SSEP) in electric power distribution networks. The method employs a new algorithm based on learning automata for optimization process. The developed algorithm includes different electrical constraints such as voltage drops, thermal limits, power flow and radial flow constraints. Moreover, prevalent cost indices are taken into consideration. The proposed method is used to solve the dynamic SSEP for Birjand city, center of South-Khorasan province of Iran, up to the year 2024. In addition, effects of the dynamic and pseudo-dynamic planning models are investigated at the study region and the obtained results are compared to those of genetic algorithm. Detailed numerical results and comparisons presented in the paper show that the proposed approach leads to proper solutions and can be used as an effective tool for the dynamic sub-transmission substation expansion planning in an actual large scale distribution network.

Seyed Mahdi Mazhari; Hassan Monsef

2013-01-01T23:59:59.000Z

171

Supersaturated Turbine Expansions for Binary Geothermal Power Plants  

SciTech Connect (OSTI)

The Heat Cycle Research project is developing the technology base that will permit a much greater utilization of the moderate-temperature, liquid-dominated geothermal resources, particularly for the generation of electrical power. The emphasis in the project has been the improvement of the performance of binary power cycles. The investigations have been examining concepts projected to improve the brine utilization by 20% relative to a ''Heber-type'' binary plant; these investigations are nearing completion. preparations are currently underway in the project to conduct field investigations of the condensation behavior of supersaturated turbine expansions. These investigations will evaluate whether the projected additional 8% to 10% improvement in brine utilization can be realized by allowing these expansions. Future program efforts will focus on the problems associated with heat rejection and on the transfer of the technology being developed to industry.

Bliem, C.J.; Mines, G.L.

1992-03-24T23:59:59.000Z

172

West Elk Mine expansion and degasification plans approved  

SciTech Connect (OSTI)

West Elk Mine recently applied for and received approval for an expansion of its mining and methane drainage operation sin Gunnison County, Colorado. The deliberation over this planned expansion among several federal agencies and other groups received considerable local press coverage. One of the key issues focused on the fate of the additional; methane that would be emitted from the mine's degasification system. This article summarizes this process, which highlights the numerous barriers that still affect many coal mine methane (CMM) project opportunities is the United states. As the debate over climate change legislation moves forward in the US Congress and awareness of greenhouse gas emissions increases around the country, lawmakers, regulators, and non-governmental organizations will continue to focus more attention on CMM reduction opportunities,.

NONE

2008-04-01T23:59:59.000Z

173

Collapse, Expansion, and a Variable Speed of Light  

E-Print Network [OSTI]

This paper presents an information-theoretic view of how an observer within a quantum system will perceive his world. It is argued that because of the indistinguishability of quantum particles, a coherent state will appear to an observer within the system like a singularity. As superposition is lost, space appears to expand, although to the outsider it is merely the collapse of the wave function. Implications of these ideas to cosmology are considered. The superluminal expansion of space provides a basis to understand inflationary cosmologies. This expansion may be taken to be equivalent to a much faster speed of light during the inflationary period. These ideas can be tested by checking for `higher' speed of light from photons emitted by decohering atoms.

Subhash Kak

2001-01-25T23:59:59.000Z

174

Dressed skeleton expansion and the coupling scale ambiguity problem  

SciTech Connect (OSTI)

Perturbative expansions in quantum field theories are usually expressed in powers of a coupling constant. In principle, the infinite sum of the expansion series is independent of the renormalization scale of the coupling constant. In practice, there is a remnant dependence of the truncated series on the renormalization scale. This scale ambiguity can severely restrict the predictive power of theoretical calculations. The dressed skeleton expansion is developed as a calculational method which avoids the coupling scale ambiguity problem. In this method, physical quantities are expressed as functional expansions in terms of a coupling vertex function. The arguments of the vertex function are given by the physical momenta of each process. These physical momenta effectively replace the unspecified renormalization scale and eliminate the ambiguity problem. This method is applied to various field theoretical models and its main features and limitations are explored. For quantum chromodynamics, an expression for the running coupling constant of the three-gluon vertex is obtained. The effective coupling scale of this vertex is shown to be essentially given by {mu}{sup 2} {approximately} Q{sub min}{sup 2}Q{sub med}{sup 2}/Q{sub max}{sup 2} where Q{sub min}{sup 2}Q{sub med}{sup 2}/Q{sub max}{sup 2} are respectively the smallest, the next-to-smallest and the largest scale among the three gluon virtualities. This functional form suggests that the three-gluon vertex becomes non-perturbative at asymmetric momentum configurations. Implications for four-jet physics is discussed.

Lu, Hung Jung

1992-09-01T23:59:59.000Z

175

Meter Expansion Plan Existing Multi-Space Meter  

E-Print Network [OSTI]

Meter Expansion Plan 11 35 9 7 10 20 12 11 12 46 23 15 15 60 23 Existing Multi-Space Meter Split Regulations 136 New Multi-Space Meter Visitor Only New Multi-Space Meter Split Regulations KEY 97 Updated 7/8/13 11 5 #12;HAVE.HAVE. UNION DR. 1 2 3 4 5 New Multi-space Meter After: 5 Meter Spaces Regulations

Duchowski, Andrew T.

176

An engineering geology analysis of home foundations on expansive clays  

E-Print Network [OSTI]

temperature associated with the wetting of dry kaolinite 113 Thermal and isothermal di f f us ivity values versus soil water content in accord with the theory of Philip and de Vries 113 APPENDIX C C-1 Probable general form of the rela- tionship between... limited treatment from three disciplines. The soils engineer has developed a broad understanding of expansive soils based on practical experience, but has only recently becun to apply classical soil mechanics theory to this area. Within the tield...

Castleberry, Joe Patterson

2012-06-07T23:59:59.000Z

177

Inhomogeneous High Frequency Expansion-Free Gravitational Waves  

E-Print Network [OSTI]

We describe a natural inhomogeneous generalization of high frequency plane gravitational waves. The waves are high frequency waves of the Kundt type whose null propagation direction in space-time has vanishing expansion, twist and shear but is not covariantly constant. The introduction of a cosmological constant is discussed in some detail and a comparison is made with high frequency gravity waves having wave fronts homeomorphic to 2-spheres.

C. Barrabes; P. A. Hogan

2007-06-18T23:59:59.000Z

178

Cylinder kernel expansion of Casimir energy with a Robin boundary  

E-Print Network [OSTI]

: : : : : : : : : : : : : : : 7 A. How to construct the Green function for a single bound- ary condition . . . . . . . . . . . . . . . . . . . . . . . . . 7 B. How to construct the Green function for a slab . . . . . . . 10 III CASIMIR ENERGY OF A SLAB WITH DIRICHLET OR NEUMANN....B.G. Casimir published his famous paper [2] in 1948. The Casimir energy can be de?ned directly as the sum of half-frequencies that is interpreted via 3 ?-function regularization [8]. The Green function formalism [9], multiple scattering expansion [10] and heat...

Liu, Zhonghai

2006-10-30T23:59:59.000Z

179

Quick asymptotic expansion aided by a variational principle  

SciTech Connect (OSTI)

It is shown how expanding asymptotically a variational functional can yield the asymptotic expansion of its Euler equation. The procedure is simple but novel and requires taking the variation of the expanded functional with respect to the leading order of the originally unknown function, even though the leading order of this function has already been determined in a previous order. An example is worked out that of a large aspect ratio tokamak plasma equilibrium state with relatively strong flows and high plasma beta.

Hameiri, Eliezer [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)

2013-02-15T23:59:59.000Z

180

Linear delta expansion applied to the O'Raifeartaigh model  

SciTech Connect (OSTI)

We reassess the method of the linear delta expansion for the calculation of effective potentials in superspace, by adopting the improved version of the super-Feynman rules in the framework of the O'Raifeartaigh model for spontaneous supersymmetry breaking. The effective potential is calculated using both the fastest apparent convergence and the principle of minimal sensitivity criteria and the consistency and efficacy of the method are checked in deriving the Coleman-Weinberg potential.

Abdalla, M. C. B.; Senise, Carlos R. Jr. [Instituto de Fisica Teorica, UNESP, Rua Pamplona 145, Bela Vista, Sao Paulo, SP, 01405-900 (Brazil); Helayeel-Neto, J. A. [Centro Brasileiro de Pesquisas Fisicas, Rua Dr. Xavier Sigaud 150, Urca, Rio de Janeiro, RJ, 22290-180 (Brazil); Nedel, Daniel L. [Universidade Federal do Pampa, Rua Carlos Barbosa S/N, Bairro Getulio Vargas, 96412-420, Bage, RS (Brazil)

2009-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

On optimal multistage electric power distribution networks expansion planning  

Science Journals Connector (OSTI)

Abstract The optimal expansion planning of electric power distribution network to meet system load growth and overcome to pseudo dynamic behavior of network parameters considering a large number of constraints is a hard satisfactory multiobjective optimization problem. This paper implements new developed Imperialist Competitive Algorithm (ICA) for the optimal expansion planning of distribution network. The topology of medium voltage (MV) distribution network as backbone of electric power distribution systems is designed by optimal sizing, siting and timing of medium voltage network components such as HV substation and MV feeders’ routes. A multistage expansion planning is proposed to consider dynamic behavior of the system parameters asset management and geographical constraints. In order to reach the global solution an efficient coding is developed for ICA parameters. The Greedy algorithm is used to solve the minimum spanning tree problem to construct a radial configuration of the mesh network. At each stage of the problem the results are fully illustrated either by figures or by tables. A sensitivity analysis is used to show the robustness of the results with respect to ICA parameters variation. The obtained results are compared with GA as well known heuristic optimization tool. The efficiency and capability of the methodology has been tested on an under developed relatively large-scale distribution network.

S. Najafi Ravadanegh; R. Gholizadeh Roshanagh

2014-01-01T23:59:59.000Z

182

Asymptotic expansion and statistical description of turbulent systems  

SciTech Connect (OSTI)

A new approach to studying turbulent systems is presented in which an asymptotic expansion of the general dynamical equations is performed prior to the application of statistical methods for describing the evolution of the system. This approach has been applied to two specific systems: anomalous drift wave turbulence in plasmas and homogeneous, isotropic turbulence in fluids. For the plasma case, the time and length scales of the turbulent state result in the asymptotic expansion of the Vlasov/Poisson equations taking the form of nonlinear gyrokinetic theory. Questions regarding this theory and modern Hamiltonian perturbation methods are discussed and resolved. A new alternative Hamiltonian method is described. The Eulerian Direct Interaction Approximation (EDIA) is slightly reformulated and applied to the equations of nonlinear gyrokinetic theory. Using a similarity transformation technique, expressions for the thermal diffusivity are derived from the EDIA equations for various geometries, including a tokamak. In particular, the unique result for generalized geometry may be of use in evaluating fusion reactor designs and theories of anomalous thermal transport in tokamaks. Finally, a new and useful property of the EDIA is pointed out. For the fluid case, an asymptotic expansion is applied to the Navier-Stokes equation and the results lead to the speculation that such an approach may resolve the problem of predicting the Kolmogorov inertial range energy spectrum for homogeneous, isotropic turbulence. 45 refs., 3 figs.

Hagan, W.K. III

1986-01-01T23:59:59.000Z

183

Asymptotic expansion and statistical description of turbulent systems  

SciTech Connect (OSTI)

A new approach to studying turbulent systems is presented in which an asymptotic expansion of the general dynamical equations is performed prior to the application of statistical methods for describing the evolution of the system. This approach was applied to two specific systems: anomalous drift wave turbulence in plasmas and homogeneous, isotropic turbulence in fluids. For the plasma case, the time and length scales of the turbulent states result in the asymptotic expansion of the Vlasov/Poisson equations taking the form of nonlinear gyrokinetic theory. A new alternative Hamiltonian method is described. The Eulerian Direct Interaction Approximation (EDIA) is slightly reformulated and applied to the equation of nonlinear gyrokinetic theory. Using a similarity transformation technique, expressions for the thermal diffusivity are derived from the EDIA equations for various geometries, including a tokamak. In particular, the unique result for generalized geometry may be of use in evaluating fusion reaction designs and theories of anomalous thermal transport in tokamaks. Finally, a new and useful property of the EDIA is pointed out. For the fluid case, an asymptotic expansion is applied to the Navier-Stokes equation and the results, in combination with the efforts of other workers on the problem, lead to the speculation that such an approach may resolve the problem of predicting the Kolmogorov intertial range energy spectrum for homogeneous, isotropic turbulence.

Hagan, W.K. III

1986-01-01T23:59:59.000Z

184

SEMI-ANNUAL REPORTS FOR FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTIO...  

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

EXPANSION L.P. & FLNG LIQUEFACTION, LLC - FE DKT. 10-160-LNG - ORDER 2913 SEMI-ANNUAL REPORTS FOR FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTION, LLC - FE DKT. 10-160-LNG - ORDER...

185

Freeport LNG Expansion, L.P., FLNG Liquefaction, LLC, FLNG Liquefactio...  

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

Freeport LNG Expansion, L.P., FLNG Liquefaction, LLC, FLNG Liquefaction 2, LLC and FLNG Liquefaction 3, LLC - 14-005-CIC Freeport LNG Expansion, L.P., FLNG Liquefaction, LLC, FLNG...

186

SEMI-ANNUAL REPORTS - FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTION...  

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

- FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTION, LLC - FE DKT. 10-161-LNG - ORDER 3282 SEMI-ANNUAL REPORTS - FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTION, LLC - FE DKT....

187

SEMI-ANNUAL REPORTS FOR FREEPORT LNG EXPANSION, L.P. & FLNG LIQUEFACTI...  

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

FOR FREEPORT LNG EXPANSION, L.P. & FLNG LIQUEFACTION, LLC - FE DKT. NO. 11-161-LNG - ORDER 3357 SEMI-ANNUAL REPORTS FOR FREEPORT LNG EXPANSION, L.P. & FLNG LIQUEFACTION, LLC - FE...

188

SEMI-ANNUAL REPORTS FOR FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTIO...  

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

LNG EXPANSION L.P. & FLNG LIQUEFACTION, LLC - FE DKT. NO. 12-06-LNG - ORDER 3066 SEMI-ANNUAL REPORTS FOR FREEPORT LNG EXPANSION L.P. & FLNG LIQUEFACTION, LLC - FE DKT. NO....

189

Theoretical basis for the scleral expansion band procedure for surgical reversal of presbyopia (SRP)  

Science Journals Connector (OSTI)

A new technique, the scleral expansion band procedure, has been developed for the surgical reversal of presbyopia. The effects of scleral expansion band are based on a recently developed theory by Schachar, wh...

Ronald A. Schachar MD; PhD

2000-12-01T23:59:59.000Z

190

Theoretical basis for the scleral expansion band procedure for surgical reversal of presbyopia [SRP  

Science Journals Connector (OSTI)

A new technique, the scleral expansion band procedure, has been developed for the surgical reversal of presbyopia. An understanding of demonstrable clinical effects of the scleral expansion band procedure, bas...

Ronald A. Schachar MD; PhD

2001-03-01T23:59:59.000Z

191

Energy recovery during expansion of compressed gas using power plant low-quality heat sources  

DOE Patents [OSTI]

A method of recovering energy from a cool compressed gas, compressed liquid, vapor, or supercritical fluid is disclosed which includes incrementally expanding the compressed gas, compressed liquid, vapor, or supercritical fluid through a plurality of expansion engines and heating the gas, vapor, compressed liquid, or supercritical fluid entering at least one of the expansion engines with a low quality heat source. Expansion engines such as turbines and multiple expansions with heating are disclosed.

Ochs, Thomas L. (Albany, OR); O'Connor, William K. (Lebanon, OR)

2006-03-07T23:59:59.000Z

192

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

Science Journals Connector (OSTI)

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

Yangquan Chen; Blas M. Vinagre; Igor Podlubny

2004-12-01T23:59:59.000Z

193

On the Linear Slopes in the Expansion-Rate Spectra of Chaos  

Science Journals Connector (OSTI)

......820 * Department of Physics, Kyushu Kyoritsu...in the expansion-rate spectra of chaos...Progress of Theoretical Physics, Vol. 91, No...in the Expansion-Rate Spectra of Chaos...to X 8 , then it passes near the maximum...large local expansion rate, so that, no periodic......

Takehiko Horita; Hazime Mori

1994-04-01T23:59:59.000Z

194

The Implications of Panama Canal Expansion to U.S. Ports and Coastal  

E-Print Network [OSTI]

The Implications of Panama Canal Expansion to U.S. Ports and Coastal Navigation Economic Analysis December 2008 #12;The proposed expansion of the Panama Canal will have significant impacts on shipping summarizes the experiences in the field along with the challenges given the Panama Canal Expansion project

US Army Corps of Engineers

195

Non minimally coupled condensate cosmologies: a phase space analysis  

E-Print Network [OSTI]

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

Sante Carloni; Stefano Vignolo; Roberto Cianci

2014-03-11T23:59:59.000Z

196

Ceramic materials with low thermal conductivity and low coefficients of thermal expansion  

DOE Patents [OSTI]

Compositions, having the general formula (Ca[sub x]Mg[sub 1[minus]x])Zr[sub 4](PO[sub 4])[sub 6] where x is between 0.5 and 0.99, are produced by solid state and sol-gel processes. In a preferred embodiment, when x is between 0.5 and 0.8, the MgCZP materials have near-zero coefficients of thermal expansion. The MgCZPs of the present invention also show unusually low thermal conductivities, and are stable at high temperatures. Macrostructures formed from MgCZP are useful in a wide variety of high-temperature applications. In a preferred process, calcium, magnesium, and zirconium nitrate solutions have their pH adjusted to between 7 and 9 either before or after the addition of ammonium dihydrogen phosphate. After dehydration to a gel, and calcination at temperatures in excess of 850 C for approximately 16 hours, single phase crystalline MgCZP powders with particle sizes ranging from approximately 20 nm to 50 nm result. The MgCZP powders are then sintered at temperatures ranging from 1200 C to 1350 C to form solid macrostructures with near-zero bulk coefficients of thermal expansion and low thermal conductivities. Porous macrostructures of the MgCZP powders of the present invention are also formed by combination with a polymeric powder and a binding agent, and sintering at high temperatures. The porosity of the resulting macrostructures can be adjusted by varying the particle size of the polymeric powder used. 7 figs.

Brown, J.; Hirschfeld, D.; Liu, D.M.; Yang, Y.; Li, T.; Swanson, R.E.; Van Aken, S.; Kim, J.M.

1992-04-07T23:59:59.000Z

197

Energy Infrastructure Events and Expansions Infrastructure Security and Energy Restoration  

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

Year-in-Review: 2010 Year-in-Review: 2010 Energy Infrastructure Events and Expansions Infrastructure Security and Energy Restoration Office of Electricity Delivery and Energy Reliability U.S. Department of Energy August 2011 OE/ISER Report 8/31/11 i For Further Information This report was prepared by the Office of Electricity Delivery and Energy Reliability under the direction of Patricia Hoffman, Assistant Secretary, and William Bryan, Deputy Assistant Secretary. Specific questions about information in this report may be directed to Alice Lippert, Senior Technical Advisor (alice.lippert@hq.doe.gov). Contributors include Mindi Farber-DeAnda, Robert Laramey, Carleen Lewandowski, Max

198

Dissipative expansion chambers with two concentric layers of fibrous material  

Science Journals Connector (OSTI)

The acoustic performance of a dissipative expansion chamber lined with two concentric, annular layers of fibrous material with different resistances is investigated. A two-dimensional analytical approach is used to determine the transmission loss of this dissipative silencer. From the boundary conditions at the rigid wall, and the interfaces between the fibre layers and the central airway, the characteristic function and thus eigenvalues and eigenfunctions for sound propagation in the dissipative chamber are obtained, leading to transmission loss through application of pressure and velocity matching. The effects of geometry and fibre properties on the acoustic attenuation are also discussed.

A. Selamet; M.B. Xu; I.J. Lee; N.T. Huff

2005-01-01T23:59:59.000Z

199

Heat kernel expansion in the covariant perturbation theory  

E-Print Network [OSTI]

Working within the framework of the covariant perturbation theory, we obtain the coincidence limit of the heat kernel of an elliptic second order differential operator that is applicable to a large class of quantum field theories. The basis of tensor invariants of the curvatures of a gravity and gauge field background, to the second order, is derived, and the form factors acting on them are obtained in two integral representations. The results are verified by the functional trace operation, by the short proper time (Schwinger-DeWitt) expansions, as well as by the computation of the Green function for the two-dimensional scalar field model.

Yuri V. Gusev

2008-11-06T23:59:59.000Z

200

Aussie LNG players target NE Asia in expansion bid  

SciTech Connect (OSTI)

Australia's natural gas players, keen to increase their presence in world liquefied natural gas trade, see Asia as their major LNG market in the decades to come. That's despite the fact that two spot cargoes of Australian Northwest Shelf LNG were shipped to Europe during the last 12 months and more are likely in 1994. Opportunities for growth are foreseen within the confines of the existing Northwest Shelf gas project for the rest of the 1990s. But the main focus for potential new grassroots project developers and expansions of the existing LNG plant in Australia is the expected shortfall in contract volumes of LNG to Japan, South Korea, and Taiwan during 2000--2010. Traditionally the price of crude oil has been used as a basis for calculating LNG prices. This means the economics of any new 21st century supply arrangements are delicately poised because of the current low world oil prices, a trend the market believes is likely to continue. In a bid to lessen the effect of high initial capital outlays and still meet projected demand using LNG from new projects and expansion of the existing plant, Australia's gas producers are working toward greater cooperation with prospective Asian buyers.

Not Available

1994-02-28T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Portal control of viral prohead expansion and DNA packaging  

SciTech Connect (OSTI)

Bacteriophage T4 terminase packages DNA in vitro into empty small or large proheads (esps or elps). In vivo maturation of esps yields the more stable and voluminous elps required to contain the 170 kb T4 genome. Functional proheads can be assembled containing portal-GFP fusion proteins. In the absence of terminase activity these accumulated in esps in vivo, whereas wild-type portals were found in elps. By nuclease protection assay dsDNAs of lengths 0.1, 0.2, 0.5, 5, 11, 20, 40 or 170 kb were efficiently packaged into wild-type elps in vitro, but less so into esps and gp20-GFP elps; particularly with DNAs shorter than 11 kb. However, 0.1 kb substrates were equally efficiently packaged into all types of proheads as judged by fluorescence correlation spectroscopy. These data suggest the portal controls the expansion of the major capsid protein lattice during prohead maturation, and that this expansion is necessary for DNA protection but not for packaging.

Ray, Krishanu, E-mail: krishanu@cfs.umbi.umd.ed [Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene St., Baltimore, MD 21201 (United States); Center for Fluorescence Spectroscopy, University of Maryland School of Medicine, 725 W. Lombard St., Baltimore, MD 21201 (United States); Oram, Mark, E-mail: moram@umaryland.ed [Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene St., Baltimore, MD 21201 (United States); Ma, Jinxia, E-mail: JMa@som.umaryland.ed [Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene St., Baltimore, MD 21201 (United States); Black, Lindsay W., E-mail: lblack@umaryland.ed [Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N. Greene St., Baltimore, MD 21201 (United States)

2009-08-15T23:59:59.000Z

202

Explicit energy expansion for general odd degree polynomial potentials  

E-Print Network [OSTI]

In this paper we derive an almost explicit analytic formula for asymptotic eigenenergy expansion of arbitrary odd degree polynomial potentials of the form $V(x)=(ix)^{2N+1}+\\beta _{1}x^{2N}+\\beta _{2}x^{2N-1}+\\cdot \\cdot \\cdot \\cdot \\cdot +\\beta _{2N}x$ where $\\beta _{k}^{\\prime }$s are real or complex for $1\\leq k\\leq 2N$. The formula can be used to find semiclassical analytic expressions for eigenenergies up to any order very efficiently. Each term of the expansion is given explicitly as a multinomial of the parameters $\\beta _{1},\\beta _{2}....$ and $\\beta _{2N}$ of the potential. Unlike in the even degree polynomial case, the highest order term in the potential is pure imaginary and hence the system is non-Hermitian. Therefore all the integrations have been carried out along a contour enclosing two complex turning points which lies within a wedge in the complex plane. With the help of some examples we demonstrate the accuracy of the method for both real and complex eigenspectra.

Asiri Nanayakkara; Thilagarajah Mathanaranjan

2014-07-01T23:59:59.000Z

203

Randomized discrepancy bounded local search for transmission expansion planning  

SciTech Connect (OSTI)

In recent years the transmission network expansion planning problem (TNEP) has become increasingly complex. As the TNEP is a non-linear and non-convex optimization problem, researchers have traditionally focused on approximate models of power flows to solve the TNEP. Existing approaches are often tightly coupled to the approximation choice. Until recently these approximations have produced results that are straight-forward to adapt to the more complex (real) problem. However, the power grid is evolving towards a state where the adaptations are no longer easy (e.g. large amounts of limited control, renewable generation) and necessitates new approaches. Recent work on deterministic Discrepancy Bounded Local Search (DBLS) has shown it to be quite effective in addressing this question. DBLS encapsulates the complexity of power flow modeling in a black box that may be queried for information about the quality of proposed expansions. In this paper, we propose a randomization strategy that builds on DBLS and dramatically increases the computational efficiency of the algorithm.

Bent, Russell W [Los Alamos National Laboratory; Daniel, William B [Los Alamos National Laboratory

2010-11-23T23:59:59.000Z

204

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents [OSTI]

An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The side walls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging side walls so that the cuts have a substantially dove-tail shape.

Rossing, T.D.

1993-02-09T23:59:59.000Z

205

Expansion joint for guideway for magnetic levitation transportation system  

DOE Patents [OSTI]

An expansion joint that allows a guideway of a magnetic levitation transportation system to expand and contract while minimizing transients occurring in the magnetic lift and drag forces acting on a magnetic levitation vehicle traveling over the joint includes an upper cut or recess extending downwardly from the upper surface of the guideway and a non-intersecting lower cut or recess that extends upwardly from the lower surface of the guideway. The sidewalls of the cuts can be parallel to each other and the vertical axis of the guideway; the depth of the lower cut can be greater than the depth of the upper cut; and the overall combined lengths of the cuts can be greater than the thickness of the guideway from the upper to lower surface so that the cuts will overlap, but be spaced apart from each other. The distance between the cuts can be determined on the basis of the force transients and the mechanical behavior of the guideway. A second pair of similarly configured upper and lower cuts may be disposed in the guideway; the expansion joint may consist of two upper cuts and one lower cut; or the cuts may have non-parallel, diverging sidewalls so that the cuts have a substantially dove-tail shape.

Rossing, Thomas D. (DeKalb, IL)

1993-01-01T23:59:59.000Z

206

Transition from decelerated to accelerated cosmic expansion in braneworld universes  

E-Print Network [OSTI]

Braneworld theory provides a natural setting to treat, at a classical level, the cosmological effects of vacuum energy. Non-static extra dimensions can generally lead to a variable vacuum energy, which in turn may explain the present accelerated cosmic expansion. We concentrate our attention in models where the vacuum energy decreases as an inverse power law of the scale factor. These models agree with the observed accelerating universe, while fitting simultaneously the observational data for the density and deceleration parameter. The redshift at which the vacuum energy can start to dominate depends on the mass density of ordinary matter. For Omega = 0.3, the transition from decelerated to accelerated cosmic expansion occurs at z approx 0.48 +/- 0.20, which is compatible with SNe data. We set a lower bound on the deceleration parameter today, namely q > - 1 + 3 Omega/2, i.e., q > - 0.55 for Omega = 0.3. The future evolution of the universe crucially depends on the time when vacuum starts to dominate over ord...

De Leon, J P

2004-01-01T23:59:59.000Z

207

GENCOs multiperiod expansion model in a competitive electricity market  

Science Journals Connector (OSTI)

Over the past two decades, several countries have restructured their electricity industry by significantly reducing the government's role in the ownership and management of energy sector. The generation sector was the first activity of the vertically integrated industry to be open for the competition and therefore, it presents the highest level of competitiveness and experience. In the new restructured electricity markets, the objective of each generation company (GENCO) is to maximise its total expected profit over a planning horizon while following the grid-code and system operators' directive for the safe operation of the power system. In the expansion plan of generating companies, the problem is to be reformulated incorporating several uncertainty factors such as demand growth, the volatility of market prices for electricity and fuels, delay in project completion, financial constraints, etc. In this paper, a long-term multi-period expansion model for a generation company operating in the deregulated electricity industry is presented. The effectiveness of the proposed approach is demonstrated on numerical examples.

Daniel Hernández-González; Guillermo Gutiérrez-Alcaraz; S.N. Singh

2012-01-01T23:59:59.000Z

208

Lattice thermal expansion for normal tetrahedral compound semiconductors  

SciTech Connect (OSTI)

The cubic root of the deviation of the lattice thermal expansion from that of the expected value of diamond for group IV semiconductors, binary compounds of III-V and II-VI, as well as several ternary compounds from groups I-III-VI{sub 2}, II-IV-V{sub 2} and I-IV{sub 2}V{sub 3} semiconductors versus their bonding length are given straight lines. Their slopes were found to be 0.0256, 0.0210, 0.0170, 0.0259, 0.0196, and 0.02840 for the groups above, respectively. Depending on the valence electrons of the elements forming these groups, a formula was found to correlate all the values of the slopes mentioned above to that of group IV. This new formula which depends on the melting point and the bonding length as well as the number of valence electrons for the elements forming the compounds, will gives best calculated values for lattice thermal expansion for all compounds forming the groups mentioned above. An empirical relation is also found between the mean ionicity of the compounds forming the groups and their slopes mentioned above and that gave the mean ionicity for the compound CuGe{sub 2}P{sub 3} in the range of 0.442.

Omar, M.S. [Department of Physics, College of Science, University of Salahaddin, Arbil, Iraqi Kurdistan (Iraq)]. E-mail: dr_m_s_omar@yahoo.com

2007-02-15T23:59:59.000Z

209

Synthesis of solid solution Er{sub 2-x}Ce{sub x}W{sub 3}O{sub 12} and studies of their thermal expansion behavior.  

SciTech Connect (OSTI)

The syntheses and structures of Er{sub 2-x}Ce{sub x}W{sub 3}O{sub 12} were studied. It was found that pure phases could form only for 0.0 {le} x {le} 0.4 and 1.5 {le} x {le} 2.0. Compounds with 0 {le} x {le} 0.4 have the hydrated orthorhombic structure at room temperature and transform to unhydrated orthorhombic one above 135 C whereas samples with 1.5 {le} x {le} 2.0 crystallize in monoclinic structure. Thermal expansion properties of Er{sub 2-x}Ce{sub x}W{sub 3}O{sub 12} were studied with high temperature X-ray powder diffraction. Samples with 0 {le} x {le} 0.4 exhibit negative thermal expansion in temperature range of 200-800 C and higher cerium content leads to more negative thermal expansion coefficient. However, compounds with 1.5 {le} x {le} 2.0 show positive thermal expansion owing to the edge-sharing polyhedra.

Wu, M. M.; Cheng, Y. Z.; Peng, J.; Xiao, X. L.; Chen, D. F.; Kiyanagi, R.; Fieramosca, J. S.; Short, S.; Jorgensen, J.; Hu, Z. B.; Graduate Univ. Chinese Academy of Sciences; China Inst. of Atomic Energy

2007-01-30T23:59:59.000Z

210

Pressure induced phase transitions in ceramic compounds containing tetragonal zirconia  

SciTech Connect (OSTI)

Stabilized tetragonal zirconia compounds exhibit a transformation toughening process in which stress applied to the material induces a crystallographic phase transition. The phase transition is accompanied by a volume expansion in the stressed region thereby dissipating stress and increasing the fracture strength of the material. The hydrostatic component of the stress required to induce the phase transition can be investigated by the use of a high pressure technique in combination with Micro-Raman spectroscopy. The intensity of Raman lines characteristic for the crystallographic phases can be used to calculate the amount of material that has undergone the transition as a function of pressure. It was found that pressures on the order of 2-5 kBar were sufficient to produce an almost complete transition from the original tetragonal to the less dense monoclinic phase; while a further increase in pressure caused a gradual reversal of the transition back to the original tetragonal structure.

Sparks, R.G.; Pfeiffer, G.; Paesler, M.A.

1988-12-01T23:59:59.000Z

211

CrowdPhase: crowdsourcing the phase problem  

Science Journals Connector (OSTI)

The idea of attacking the phase problem by crowdsourcing is introduced. Using an interactive, multi-player, web-based system, participants work simultaneously to select phase sets that correspond to better electron-density maps in order to solve low-resolution phasing problems.

Jorda, J.

2014-05-23T23:59:59.000Z

212

Microsoft Word - CX -Ostrander Substation Expansion.doc  

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

6, 2011 6, 2011 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Amit Sinha Project Manager - TEP-CSB-2 Proposed Action: Ostrander Substation Addition Budget Information: Work order 00262568 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.11 Construction of electric power substations (including switching stations and support facilities)....or modification (other than voltage increases) of existing substations and support facilities... Location: Clackamas County, Oregon (T2S, R3E, Sections 26 and 35) Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to expand its existing Ostrander Substation near Barton, Oregon by approximately 4 acres. The expansion would accommodate three new 230/500-kV transformers,

213

The Coefficient of Thermal Expansion in PBX 9502  

Office of Scientific and Technical Information (OSTI)

LA-14003 LA-14003 Approved for public release; distribution is unlimited. The Elusive Coefficients of Thermal Expansion in PBX 9502 Editing by Belinda K. Haag, IM-1 Illustrations by J. Phil Putnam, IM-1 Cover Photo: Stacked sheets of TATB exposed by fracture in a consolidated PBX 9502 component. Los Alamos National Laboratory, an affirmative action/ equal opportunity employer, is operated by the University of California for the National Nuclear Security Administration of the US Department of Energy under contract W-7405-ENG-36. This work was prepared as an account of work sponsored by an agency of the United States Government. Neither the Regents of the University of California, the United States Government nor

214

Microsoft Word - Forest Grove Expansion I CX.doc  

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

, 2011 , 2011 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Amit Sinha - TEP-CSB-2 Proposed Action: Forest Grove Substation Expansion Budget Information: Work Order # 255319 Task 03 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021: B4.6 "Additions or modifications to electric power transmission facilities..." Location: Washington County, OR - Section 32, Township 1 North, Range 3 West of the Forest Grove Quadrangle Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to expand Forest Grove Substation located in Washington County, OR. The purpose of this project is to improve load service and reliability within the Portland vicinity as per the NERC reliability standards. Within the existing Forest Grove Substation, the

215

Ultracold plasma expansion as a function of charge neutrality  

SciTech Connect (OSTI)

Ultracold plasmas (UCPs) are created under conditions of near but not perfect neutrality. In the limit of zero electron temperature, electron screening results in non-neutrality manifesting itself as an interior region of the UCP with both electrons and ions and an exterior region composed primarily of ions. The interior region is the region of the most scientific interest for 2-component ultracold plasma physics. This work presents a theoretical model through which the time evolution of non-neutral UCPs is calculated. Despite Debye screening lengths much smaller than the characteristic plasma spatial size, model calculations predict that the expansion rate and the electron temperature of the UCP interior is sensitive to the neutrality of the UCP. The predicted UCP dependence on neutrality has implications for the correct measurement of several UCP properties, such as electron temperature, and a proper understanding of evaporative cooling of the electrons in the UCP.

Witte, Craig; Roberts, Jacob L. [Colorado State University, Fort Collins, Colorado 80523 (United States)

2014-10-15T23:59:59.000Z

216

The struggle for safe nuclear expansion in China  

Science Journals Connector (OSTI)

Abstract After a temporary halt following the Fukushima nuclear disaster in March 2011, China resumed its fast, yet cautious, expansion of nuclear energy programme. Nuclear energy is considered as part of the general strategy to deal with the challenges of energy security and climate change and to advance with ‘state of the art’ technology in its development. This article briefly discusses recent development in and driving forces behind nuclear industry in China, and several challenges it has been facing: how to adopt, adapt, standardise and indigenise whose technologies, and how to address the shortage of qualified nuclear engineers, scientists, skilled labour force and qualified regulators. More importantly, it argues that safe and secure nuclear development requires consistent policies and effective regulations. Therefore, it is crucial to build policy and regulatory capacities based on coordination, planning and management of government agencies and the industry.

Y.C. Xu

2014-01-01T23:59:59.000Z

217

Low Temperature Thermal Expansion of G-10 Plastic and Mylar  

SciTech Connect (OSTI)

This engineering note is a summary of test information and conclusions from the thermal expansion tests conducted at D-O during the fall of 1992. Each test was conducted separately but using the same basic procedure and equipment. While information on material properties at room temperature and above for these products is quite well doccumented, the companies producing these products had no available data about the thermal properties of these materials at cryogenic temperatures. This lack of readily available information prompted these tests to determine the accuracy of using the elevated temperature data for lower temperatures also. The results of each test were written up separately as stand alone short reports for immediate use in the design stages of the V.L.P.C. cryostat cassette. Both short reports are gathered here for convenient reference.

Bell, D.; /Fermilab

1993-05-24T23:59:59.000Z

218

Infra-red divergences in the large-N expansion  

E-Print Network [OSTI]

We investigate a vectorial O(N) model with a generic nearest-neighbor interaction W(\\bsigma_i\\cdot \\bsigma_j) (depending on {\\cal N} tunable parameters), a Yukawa (and Gross Neveu) model with N_f fermions at finite temperature and the vectorial \\phi^6 model, in the large N (N_f) limit. All this models exhibit a Mean Field critical point for N=\\infinity. When 1/N fluctuations are included, infra red divergences appear near the critical point. In the framework of a generalized 1/N expansion we show that these divergences are related to a universal crossover mechanism between the Mean Field universality class (N=\\infinity) and the nonclassical one for N<\\infinity. For the generic nearest-neighbor interaction multicritical points are also investigated.

Bortolo Matteo Mognetti

2007-03-20T23:59:59.000Z

219

Dark Energy, Expansion History of the Universe, and SNAP  

E-Print Network [OSTI]

This talk presents a pedagogical discussion of how precision distance-redshift observations can map out the recent expansion history of the universe, including the present acceleration and the transition to matter dominated deceleration. The proposed Supernova/Acceleration Probe (SNAP) will carry out observations determining the components and equations of state of the energy density, providing insights into the cosmological model, the nature of the accelerating dark energy, and potentially clues to fundamental high energy physics theories and gravitation. This includes the ability to distinguish between various dynamical scalar field models for the dark energy, as well as higher dimension and alternate gravity theories. A new, advantageous parametrization for the study of dark energy to high redshift is also presented.

Eric V. Linder

2003-02-03T23:59:59.000Z

220

Bethe-Brueckner-Goldstone expansion in neutron matter  

Science Journals Connector (OSTI)

The Equation of State of pure neutron matter at zero temperature is calculated up to the three hole-line level of approximation in the Bethe-Brueckner-Goldstone expansion. The calculations are performed for the Av14 and the Av18 nucleon-nucleon potentials, up to the Fermi momentum kF=2.8 fm?1. The three hole-line contribution turns out to be smaller than in symmetric nuclear matter, and indeed a minor correction if the so-called “continuous choice” for the single particle potential is adopted. These findings are in line with the corresponding values of the wound parameter. The results are expected to be relevant for the theory of neutron stars structure.

M. Baldo; G. Giansiracusa; U. Lombardo; H.Q. Song

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Hubble expansion & Structure Formation in Time Varying Vacuum Models  

E-Print Network [OSTI]

We investigate the properties of the FLRW flat cosmological models in which the vacuum energy density evolves with time, $\\Lambda(t)$. Using different versions of the $\\Lambda(t)$ model, namely quantum field vacuum, power series vacuum and power law vacuum, we find that the main cosmological functions such as the scale factor of the universe, the Hubble expansion rate $H$ and the energy densities are defined analytically. Performing a joint likelihood analysis of the recent supernovae type Ia data, the Cosmic Microwave Background (CMB) shift parameter and the Baryonic Acoustic Oscillations (BAOs) traced by the Sloan Digital Sky Survey (SDSS) galaxies, we put tight constraints on the main cosmological parameters of the $\\Lambda(t)$ scenarios. Furthermore, we study the linear matter fluctuation field and the growth rate of clustering of the above vacuum models. Finally, we derived the theoretically predicted dark-matter halo mass function and the corresponding distribution of cluster-size halos for all the mode...

Basilakos, S; Solà, J

2009-01-01T23:59:59.000Z

222

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

223

Ultra low thermal expansion, highly thermal shock resistant ceramic  

DOE Patents [OSTI]

Three families of ceramic compositions having the given formula: .phi..sub.1+X Zr.sub.4 P.sub.6-2X Si.sub.2X O.sub.24, .phi..sub.1+X Zr.sub.4-2X Y.sub.2X P.sub.6 O.sub.24 and .phi..sub.1+X Zr.sub.4-X Y.sub.X P.sub.6-2X Si.sub.X O.sub.24 wherein .phi. is either Strontium or Barium and X has a value from about 0.2 to about 0.8 have been disclosed. Ceramics formed from these compositions exhibit very low, generally near neutral, thermal expansion over a wide range of elevated temperatures.

Limaye, Santosh Y. (1440 Sandpiper Cir. #38, Salt Lake City, UT 84117)

1996-01-01T23:59:59.000Z

224

Dynamic Time Expansion and Compression Using Nonlinear Waveguides  

DOE Patents [OSTI]

Dynamic time expansion or compression of a small amplitude input signal generated with an initial scale is performed using a nonlinear waveguide. A nonlinear waveguide having a variable refractive index is connected to a bias voltage source having a bias signal amplitude that is large relative to the input signal to vary the reflective index and concomitant speed of propagation of the nonlinear waveguide and an electrical circuit for applying the small amplitude signal and the large amplitude bias signal simultaneously to the nonlinear waveguide. The large amplitude bias signal with the input signal alters the speed of propagation of the small-amplitude signal with time in the nonlinear waveguide to expand or contract the initial time scale of the small-amplitude input signal.

Findikoglu, Alp T.; Hahn, Sangkoo F.; Jia, Quanxi

2004-06-22T23:59:59.000Z

225

Doppler-like effect and doubtful expansion of universe  

E-Print Network [OSTI]

The distance contraction, as observed in electrical soundings over horizontally stratified earth (static system), is identified as a counterpart of Doppler shift in dynamical systems. Identification of Doppler-like effect in a stock-still systems makes it possible to give an al-ternative answer to the question about an effective cause of the Doppler shift, which sounds: the inhomogeneities. This answer opens different static as well as kinematic possibilities, which challenge established theories of expanding universe and energizing big bang.The energy propagating in stratified universe of layers exhibits a shift which could be at-tributed not only to the expansion (Hubble's theory) but alternatively to fluctuations in material properties (inhomogeneities).

Edward Szaraniec

2003-10-01T23:59:59.000Z

226

Glass transition in Ultrathin Polymer Films : A Thermal Expansion Study  

E-Print Network [OSTI]

Glass transition process gets affected in ultrathin films having thickness comparable to the size of the molecules. We observe systematic broadening of glass transition temperature (Tg) as the thickness of the polymer film reduces below the radius of gyration but the change in the average Tg was found to be very small. Existence of reversible negative and positive thermal expansion below and above Tg increased the sensitivity of our thickness measurements performed using energy dispersive x-ray reflectivity. A simple model of Tg variation as a function of depth expected from sliding motion could explain the results. We observe clear glass transition even for 4 nm polystyrene film that was predicted to be absent from ellipsometry measurements of thicker films.

M. Bhattacharya; M. K. Sanyal; Th. Geue; U. Pietsch

2005-01-19T23:59:59.000Z

227

Year-in-Review: 2012 Energy Infrastructure Events and Expansions (July  

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

Year-in-Review: 2012 Energy Infrastructure Events and Expansions Year-in-Review: 2012 Energy Infrastructure Events and Expansions (July 2013) Year-in-Review: 2012 Energy Infrastructure Events and Expansions (July 2013) The Year-in-Review (YIR): 2012 Energy Infrastructure Events and Expansions report provides a summary of significant energy disruptions and infrastructure changes that occurred in the United States throughout 2012. The focus is on the United States, but international events that impacted the United States are also reported. The 2012 YIR is based primarily on information reported in the Energy Assurance Daily (EAD) between January 1, 2012 and December 31, 2012. Year-in-Review: 2012 Energy Infrastructure Events and Expansions More Documents & Publications Energy Infrastructure Events and Expansions Year-in-Review 2011

228

Panama Canal Expansion Illustrates Need for Multimodal Near-Source Air Quality Assessment  

Science Journals Connector (OSTI)

Panama Canal Expansion Illustrates Need for Multimodal Near-Source Air Quality Assessment ... Expansion of the Panama Canal, with the third set of locks expected to be complete in 2015, is anticipated to catalyze change in the United States multimodal freight transportation sector. ... While past studies have evaluated the air impacts of individual sources, understanding the Panama Canal expansion effect requires consideration of multiple interacting sources and locations in parallel (Figure 1). ...

Gayle S. W. Hagler; Timothy M. Barzyk; Sue Kimbrough; Vlad Isakov; Paul Gagliano; Michelle S. Bergin; David D’Onofrio; Richard W. Baldauf; Chad R. Bailey

2013-08-27T23:59:59.000Z

229

Thermodynamics of the pion gas using the O(N) model in 1/N expansion  

E-Print Network [OSTI]

We investigate the thermodynamics of a pion gas within the O(N) model in the 1/N expansion. Using the auxiliary field technique, we compute the effective potential up to the next-to-leading order (NLO) and show that it can be renormalized in a temperature-independent manner. The crucial step for the consistency of the calculation turns out to be the elimination of the auxiliary field prior to renormalization. Subsequently, we solve the NLO gap equation for the chiral condensate as a function of temperature both in the chiral limit and with explicit symmetry breaking. We propose a simple semi-analytic estimate of the NLO correction to the condensate and compare it to the exact numerical solution. Finally, we show that in the chiral limit the chiral symmetry is restored at finite temperature by a second-order phase transition, and determine the critical scaling of the order parameter. We study the dependence of the critical temperature on the renormalized coupling and find that in contrast to the weak-coupling limit, at strong coupling the critical temperature increases at NLO.

Tomas Brauner

2008-12-02T23:59:59.000Z

230

Expansion of nanoplasmas and laser-driven nuclear fusion in single exploding clusters  

SciTech Connect (OSTI)

The expansion of laser-irradiated clusters can be controlled by acting on the amount of energy delivered to the electrons. When increasing the electron energy, the expansion regime varies smoothly from a quasineutral, hydrodinamic-like to a Coulomb explosion (CE), as revealed by self-consistent kinetic analysis. A double-pump irradiation scheme can produce hybrid expansion regimes wherein a slow hydrodynamic expansion is followed by a fast CE, leading to ion overtaking and producing multiple ion flows expanding with different velocities, which can lead to intracluster fusion reactions in homonuclear deuterium clusters.

Peano, F.; Martins, J. L.; Silva, L. O. [GoLP/Instituto de Plasmas e Fusao Nuclear, Instituto Superior Tecnico, 1049-001 Lisboa (Portugal); Fonseca, R. A. [GoLP/Instituto de Plasmas e Fusao Nuclear, Instituto Superior Tecnico, 1049-001 Lisboa (Portugal); Departamento de Ciencias e Tecnologias da Informacao, Instituto Superior de Ciencias do Trabalho e da Empresa, 1649-026 Lisboa (Portugal); Peinetti, F.; Mulas, R.; Coppa, G. [Dipartimento di Energetica, Politecnico di Torino, 10129 Torino (Italy)

2008-09-07T23:59:59.000Z

231

A practical local hacking scheme on device-independent Bell test based quantum randomness expansion  

Science Journals Connector (OSTI)

Violation of Bell inequality cannot guarantee non-locality, thus an applicable hacking scheme on device-independent Bell test based quantum randomness expansion is given, together with...

Li, Junhui; Yu, Quanfu; Liu, Yu; Guo, Hong

232

Heat Flow Database Expansion for NGDS Data Development, Collection and Maintenance (SMU)  

Broader source: Energy.gov [DOE]

Heat Flow Database Expansion for NGDS Data Development, Collection and Maintenance (SMU) presentation at the April 2013 peer review meeting held in Denver, Colorado.

233

Thermal expansion of manganese dioxide using high-temperature in situ X-ray diffraction  

Science Journals Connector (OSTI)

The thermal expansion behaviour of manganese dioxide, an important battery material, is reported using high-temperature in situ X-ray diffraction between 298 and 673 K.

Dose, W.M.

2013-08-03T23:59:59.000Z

234

Retreat of the state and the market: liberalisation and education expansion in Sudan under the NCP.  

E-Print Network [OSTI]

??This thesis is an analysis of two concurrent processes - the liberalisation of the economy and the expansion of the tertiary education system - by… (more)

Mann, Laura Elizabeth

2012-01-01T23:59:59.000Z

235

Effect of curing conditions and concrete mix design on the expansion generated by delayed ettringite formation  

Science Journals Connector (OSTI)

Many studies have shown the effect of different parameters on the expansion induced by delayed ettringite formation (DEF), but there is not...

X. Brunetaud; R. Linder; L. Divet; D. Duragrin; D. Damidot

2007-07-01T23:59:59.000Z

236

Quantum Spin Hall Phases  

Science Journals Connector (OSTI)

......even it is called the weak topological in- sulator (WTI). The STI and WTI correspond to the QSH and I phases, respectively...are used to distinguish various phases in the STI or WTI phases, and each phase can be associated with a mod......

Shuichi Murakami

2008-06-01T23:59:59.000Z

237

Dispersion of solid particles in turbulant flow through pipe expansions  

Science Journals Connector (OSTI)

......liquid phases in a variety of industrial processes, are to function efficiently. It is...motions will not model the entrainment process properly. In the present paper, several...Presented at AIAA 22nd Aerospace Sciences Mtg., Reno, Nevada, U.S.A. SNYDER......

DAVID I. GRAHAM; PHILIP W. JAMES

1996-03-01T23:59:59.000Z

238

Expansion and Improvement of Solar Water Heating Technology in China  

Open Energy Info (EERE)

Improvement of Solar Water Heating Technology in China Improvement of Solar Water Heating Technology in China Project Management Office Jump to: navigation, search Name Expansion and Improvement of Solar Water Heating Technology in China Project Management Office Place Beijing, Beijing Municipality, China Zip 100038 Sector Buildings, Solar Product The programme focuses on the development of high-quality and attractive-looking model designs for integrating solar water heaters (SWH) into buildings in China. Coordinates 39.90601°, 116.387909° 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":39.90601,"lon":116.387909,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

239

Modeling biofuel expansion effects on land use change dynamics  

Science Journals Connector (OSTI)

Increasing demand for crop-based biofuels, in addition to other human drivers of land use, induces direct and indirect land use changes (LUC). Our system dynamics tool is intended to complement existing LUC modeling approaches and to improve the understanding of global LUC drivers and dynamics by allowing examination of global LUC under diverse scenarios and varying model assumptions. We report on a small subset of such analyses. This model provides insights into the drivers and dynamic interactions of LUC (e.g., dietary choices and biofuel policy) and is not intended to assert improvement in numerical results relative to other works.Demand for food commodities are mostly met in high food and high crop-based biofuel demand scenarios, but cropland must expand substantially. Meeting roughly 25% of global transportation fuel demand by 2050 with biofuels requires >2 times the land used to meet food demands under a presumed 40% increase in per capita food demand. In comparison, the high food demand scenario requires greater pastureland for meat production, leading to larger overall expansion into forest and grassland. Our results indicate that, in all scenarios, there is a potential for supply shortfalls, and associated upward pressure on prices, of food commodities requiring higher land use intensity (e.g., beef) which biofuels could exacerbate.

Ethan Warner; Daniel Inman; Benjamin Kunstman; Brian Bush; Laura Vimmerstedt; Steve Peterson; Jordan Macknick; Yimin Zhang

2013-01-01T23:59:59.000Z

240

Energy Prices and the Expansion of World Trade  

E-Print Network [OSTI]

The oil shocks of the 1970s coincided with a number of economic disturbances. However, it has been difficult to develop models where oil shocks have a quantitatively important impact on the economy. In this paper, I show that the disturbances in transportation caused by the oil shocks can significantly affect the economy. I argue that changes in energy prices were responsible for a worldwide slowdown in the growth of trade and may help explain the apparent change in the price-trade elasticity. While tariffs have fallen steadily since 1970, trade growth slowed in the mid-1970s and has grown rapidly since the mid-1980s. In a standard trade model, this pattern implies that the price-import elasticity increased sharply in the mid-1980s. In this paper, I argue that the oil crises of the 1970s led to higher transportation costs. In 1986 energy prices fell to their pre-crisis level, reducing transportation costs and by extension trade barriers. I present a trade model with an energy using transportation sector. In model simulations, I show that total trade costs (transportation cost plus tariffs) are constant from 1974 to 1982. Once transportation costs are accounted for, the price-import elasticity no longer needs to radically change. I also show that trade expansion since 1960 is 50 percent higher in a standard trade model that includes a transportation sector compared to one that does not.

Benjamin Bridgman

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

$1/d$ Expansion for $k$-Core Percolation  

E-Print Network [OSTI]

The physics of $k$-core percolation pertains to those systems whose constituents require a minimum number of $k$ connections to each other in order to participate in any clustering phenomenon. Examples of such a phenomenon range from orientational ordering in solid ortho-para ${\\rm H}_2$ mixtures to the onset of rigidity in bar-joint networks to dynamical arrest in glass-forming liquids. Unlike ordinary ($k=1$) and biconnected ($k=2$) percolation, the mean field $k\\ge3$-core percolation transition is both continuous and discontinuous, i.e. there is a jump in the order parameter accompanied with a diverging length scale. To determine whether or not this hybrid transition survives in finite dimensions, we present a $1/d$ expansion for $k$-core percolation on the $d$-dimensional hypercubic lattice. We show that to order $1/d^3$ the singularity in the order parameter and in the susceptibility occur at the same value of the occupation probability. This result suggests that the unusual hybrid nature of the mean field $k$-core transition survives in high dimensions.

A. B. Harris; J. M. Schwarz

2005-05-12T23:59:59.000Z

242

Hubble expansion & Structure Formation in Time Varying Vacuum Models  

E-Print Network [OSTI]

We investigate the properties of the FLRW flat cosmological models in which the vacuum energy density evolves with time, $\\Lambda(t)$. Using different versions of the $\\Lambda(t)$ model, namely quantum field vacuum, power series vacuum and power law vacuum, we find that the main cosmological functions such as the scale factor of the universe, the Hubble expansion rate $H$ and the energy densities are defined analytically. Performing a joint likelihood analysis of the recent supernovae type Ia data, the Cosmic Microwave Background (CMB) shift parameter and the Baryonic Acoustic Oscillations (BAOs) traced by the Sloan Digital Sky Survey (SDSS) galaxies, we put tight constraints on the main cosmological parameters of the $\\Lambda(t)$ scenarios. Furthermore, we study the linear matter fluctuation field and the growth rate of clustering of the above vacuum models. Finally, we derived the theoretically predicted dark-matter halo mass function and the corresponding distribution of cluster-size halos for all the models studied. Their expected redshift distribution indicates that it will be difficult to distinguish the closely resembling models (constant vacuum, quantum field and power-law vacuum), using realistic future X-ray surveys of cluster abundances. However, cluster surveys based on the Sunayev-Zeldovich detection method give some hope to distinguish the closely resembling models at high redshifts.

S. Basilakos; M. Plionis; J. Sola

2009-09-22T23:59:59.000Z

243

West Foster Creek Expansion Project 2007 HEP Report.  

SciTech Connect (OSTI)

During April and May 2007, the Columbia Basin Fish and Wildlife Authority's (CBFWA) Regional HEP Team (RHT) conducted baseline Habitat Evaluation Procedures (HEP) (USFWS 1980, 1980a) analyses on five parcels collectively designated the West Foster Creek Expansion Project (3,756.48 acres). The purpose of the HEP analyses was to document extant habitat conditions and to determine how many baseline/protection habitat units (HUs) to credit Bonneville Power Administration (BPA) for funding maintenance and enhancement activities on project lands as partial mitigation for habitat losses associated with construction of Grand Coulee and Chief Joseph Dams. HEP evaluation models included mule deer (Odocoileus hemionus), western meadowlark (Sturnella neglecta), sharp-tailed grouse, (Tympanuchus phasianellus), Bobcat (Lynx rufus), mink (Neovison vison), mallard (Anas platyrhynchos), and black-capped chickadee (Parus atricapillus). Combined 2007 baseline HEP results show that 4,946.44 habitat units were generated on 3,756.48 acres (1.32 HUs per acre). HEP results/habitat conditions were generally similar for like cover types at all sites. Unlike crediting of habitat units (HUs) on other WDFW owned lands, Bonneville Power Administration received full credit for HUs generated on these sites.

Ashley, Paul R.

2008-02-01T23:59:59.000Z

244

A PLASMA EXPANSION MODEL BASED ON THE FULL EULER-POISSON SYSTEM  

E-Print Network [OSTI]

A PLASMA EXPANSION MODEL BASED ON THE FULL EULER-POISSON SYSTEM P. Crispel CNES Centre de Toulouse a quasi-neutral plasma expanding in the vacuum gap separat- ing two electrodes. During the expansion, some particles are emitted from the plasma- vacuum interface and form a beam in the vacuum. Starting from the two

Vignal, Marie-Hélène

245

On plasma expansion in vacuum Pierre Degond, Celine Parzani, Marie-Hel`ene Vignal  

E-Print Network [OSTI]

On plasma expansion in vacuum Pierre Degond, C�eline Parzani, Marie-H�el`ene Vignal Abstract. In this paper, we propose a model describing the expansion of a plasma in vacuum. Our starting point consists at the plasma-vacuum interface. This emission is well modeled by a Child-Langmuir law. The difficulty consists

Vignal, Marie-Hélène

246

Economic Costs and Benefits of the Trans Mountain Expansion Project (TMX)  

E-Print Network [OSTI]

Economic Costs and Benefits of the Trans Mountain Expansion Project (TMX) for BC and Metro.thegoodman.com November 10, 2014 #12;SCHOOL OF PUBLIC POLICY Economic Costs and Benefits of the Trans Mountain Expansion Project (TMX) for BC and Metro Vancouver ii Table of Contents 1 Executive Summary

247

Final Independent External Peer Review Report for the Savannah Harbor Expansion Project  

E-Print Network [OSTI]

for the Savannah Harbor Expansion Project General Reevaluation Report EXECUTIVE SUMMARY Savannah Harbor is a deep and 600 feet wide from deep water in the ocean (River Mile 11.4B) to the channel between the jettiesFinal Independent External Peer Review Report for the Savannah Harbor Expansion Project General

US Army Corps of Engineers

248

Mechanical and Thermal Prototype Testing for a Rotatable Collimator for the LHC Phase II Collimation Upgrade  

SciTech Connect (OSTI)

The Phase II upgrade to the LHC collimation system calls for complementing the robust Phase I graphite collimators with high Z, low impedance Phase II collimators. The design for the collimation upgrade has not been finalized. One option is to use metallic rotatable collimators and testing of this design will be discussed here. The Phase II collimators must be robust in various operating conditions and accident scenarios. A prototype collimator jaw has been tested for both mechanical and thermal compliance with the design goals. Thermal expansion bench-top tests are compared to ANSYS simulation results.

Smith, Jeffrey Claiborne; Doyle, Eric; Keller, Lewis; Lundgren, Steven; Markiewicz, Thomas Walter; /SLAC; ,

2010-08-26T23:59:59.000Z

249

Low-temperature structural phase transition in deuterated and protonated lithium acetate dihydrate  

Science Journals Connector (OSTI)

Heat capacity measurements of protonated lithium acetate dihydrate show a structural phase transition at T = 12 K. This finding is in contrast to earlier work, where it was thought that only the deuterated compound undergoes a low temperature structural phase transition. This finding is confirmed by low temperature ultrasound spectroscopy, where the structural phase transition is associated with a velocity decrease of the ultrasonic waves, i.e. with an elastic softening. We compare the thermodynamic properties of the protonated and deuterated compounds and discuss two alternatives for the mechanism of the phase transition based on the thermal expansion measurements.

F. Schröder; B. Winkler; E. Haussühl; P.T. Cong; B. Wolf; M. Avalos-Borja; M. Quilichini; B. Hennion

2010-01-01T23:59:59.000Z

250

Liquid Phase Heating Systems  

E-Print Network [OSTI]

saturation pressure is ju'st under 278 psig. To this, pump head, pump NPSH and static head due to elevated piping must l be added to arrive at total pressure in a steam cushioned HTW system. Nitrogen cushioned systems are more common, and expansion...

Mordt, E. H.

1979-01-01T23:59:59.000Z

251

Phase space barriers and dividing surfaces in the absence of critical points of the potential energy  

E-Print Network [OSTI]

-studied and nonintegrable H´enon-Heiles potential can be obtained by se- ries expansion of the completely integrable Toda, and there has been a great deal of work over the past ten years describing phase space signatures of index one 22­24). More recently, index two25­27 and higher index28 saddles have been studied. The work on index

252

VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion | Department of  

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

VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion March 12, 2010 - 2:47pm Addthis Charlotte sees next-gen vehicle supply expansion: U.S. Energy Secretary Steve Chu speaks at Celgard LLC in Charlotte, N.C. as Mitch Pulwer, Celgard’s vice president and general manager, looks on. | Photo courtesy of Celgard | Charlotte sees next-gen vehicle supply expansion: U.S. Energy Secretary Steve Chu speaks at Celgard LLC in Charlotte, N.C. as Mitch Pulwer, Celgard's vice president and general manager, looks on. | Photo courtesy of Celgard | Joshua DeLung Right now, manufacturers of electric cars too often have to rely on foreign suppliers for the high-performance batteries needed in those vehicles. But

253

VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion | Department of  

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

VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion VP 100: Charlotte Sees Next-Gen Vehicle Supply Expansion March 12, 2010 - 2:47pm Addthis Charlotte sees next-gen vehicle supply expansion: U.S. Energy Secretary Steve Chu speaks at Celgard LLC in Charlotte, N.C. as Mitch Pulwer, Celgard’s vice president and general manager, looks on. | Photo courtesy of Celgard | Charlotte sees next-gen vehicle supply expansion: U.S. Energy Secretary Steve Chu speaks at Celgard LLC in Charlotte, N.C. as Mitch Pulwer, Celgard's vice president and general manager, looks on. | Photo courtesy of Celgard | Joshua DeLung Right now, manufacturers of electric cars too often have to rely on foreign suppliers for the high-performance batteries needed in those vehicles. But

254

EA-1763: Geothermal Expansion to Boise State University, City of Boise,  

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

763: Geothermal Expansion to Boise State University, City of 763: Geothermal Expansion to Boise State University, City of Boise, Boise, Idaho EA-1763: Geothermal Expansion to Boise State University, City of Boise, Boise, Idaho SUMMARY This EA evaluates the proposal to provide Federal funding to the City of Boise for the design and construction of an extension of the City's geothermal system onto the Boise State University. This proposal would be jointly funded by DOE and the Department of Housing and Urban Development. PUBLIC COMMENT OPPORTUNITIES There are none available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD December 23, 2010 EA-1763: Final Environmental Assessment Geothermal Expansion to Boise State University, Boise, Idaho December 23, 2010 EA-1763: Finding of No Significant Impact Geothermal Expansion to Boise State University, City of Boise, Ada County,

255

Year-in-Review: 2012 Energy Infrastructure Events and Expansions Now  

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

Year-in-Review: 2012 Energy Infrastructure Events and Expansions Year-in-Review: 2012 Energy Infrastructure Events and Expansions Now Available (July 2013) Year-in-Review: 2012 Energy Infrastructure Events and Expansions Now Available (July 2013) July 26, 2013 - 12:07pm Addthis The Office of Electricity Delivery and Energy Reliability has released the Year-in-Review: 2012 Energy Infrastructure Events and Expansions. This publication provides a summary of significant energy disruptions and infrastructure changes that occurred in the United States throughout 2012. The focus is on the United States, but international events that impacted the United States are also reported. The 2012 YIR is based primarily on information reported in the Energy Assurance Daily (EAD) between January 1, 2012 and December 31, 2012. The full Year-in-Review: 2012 Energy Infrastructure Events and Expansions

256

Longevity of the quark-gluon plasma and the mixed phase from intensity interferometry of high energy photons  

E-Print Network [OSTI]

Two-photon intensity interferometry is shown to provide an accurate measurement of lifetime of quark-gluon plasma created in ultra-relativistic heavy ion collisions via the difference of outward and sidewardcorrelation radii. Under the assumption of a longitudinal, boost invariant expansion of the plasma, we obtain analytical expressions for the correlations from the quark-gluon plasma phase. A $3+1$ dimensional expansion of the plasma along with a first order phase transition to hadrons is next considered, and, leads to a source with two characteristic lifetimes, one for the quark-gluon plasma phase, and the other for the longer lived mixed phase. This may even help us to {\\em experimentally} determine the order of the phase transition.

Dinesh K. Srivastava; Charles Gale

1993-11-10T23:59:59.000Z

257

Phase-Transfer Catalysts  

Science Journals Connector (OSTI)

In previous chapters we learned that a phase-transfer catalyst must have two particular chemical functions to be successful, that is, it must rapidly transfer one of the reactant species into the normal phase ...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

258

Piecewise Linear Phase Transitions  

E-Print Network [OSTI]

It is shown how simple assumptions lead to piecewise linear behavior, which is observed in certain phase transitions.

Joseph B. Keller

2007-11-26T23:59:59.000Z

259

Multimedia Phase-Spaces  

Science Journals Connector (OSTI)

Dynamic phase-spaces are suggested as a way of designing and implementing interactive multimedia systems. A dynamic phase-space is a space of properties overlayed with dynamics. The space is “decorated” with multimedia resources such ... Keywords: catastrophe theory, dynamics, installation, interactive narrative, museums, phase-space

Peter Bøgh Andersen

1998-05-01T23:59:59.000Z

260

Highly Anisotropic Thermal Expansion in Molecular Films of Dicarboxylic Fatty Acids  

SciTech Connect (OSTI)

Angstrom-resolution x-ray measurements reveal the existence of two-dimensional (2D) crystalline order in molecularly thin films of surface-parallel-oriented fatty diacid molecules supported on a liquid mercury surface. The thermal expansion coefficients along the two unit cell vectors are found to differ 17-fold. The high anisotropy of the 2D thermal expansion and the crystalline coherence length are traced to the different bonding in the two directions: van der Waals normal to, and covalent plus hydrogen bonding along the molecular backbone axis. Similarities with, and differences from, negative thermal expansion materials are discussed.

Tamam L.; Ocko B.; Kraack, H.; Sloutskin, E.; Deutsch, M.

2012-05-25T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Regulatory Factors and Capacity-Expansion Planning in Global Chemical Supply Chains  

Science Journals Connector (OSTI)

In what follows, we first extensively review the existing work on capacity-expansion planning to highlight the scarcity of literature considering regulatory factors. ... The model determines new processes, expansion plans, and shutdown policies to maximize the net present value of a project given the forecasts of prices and demands of the chemicals over a long planning horizon. ... Using the sales forecast from the marketing division, the multinational company wishes to develop an optimum, strategic, and global capacity-expansion plan over a planning horizon of T fiscal years or periods (t = 1, 2, ..., T). ...

Hong-Choon Oh; I. A. Karimi

2004-05-28T23:59:59.000Z

262

The first law of thermodynamics as the origin of the expansion law of the universe  

E-Print Network [OSTI]

In a recent paper, Padmanabhan suggested that the expansion of the universe is attributed to the difference between the number of degrees of freedom on a holographic surface and the bulk degrees of freedom inside it \\cite{T. Padmanabhan1}. In this work, we argue that the first law of thermodynamics is the origin of the expansion law of the universe. We will, then, use this idea to obtain a generalized form of the expansion law for a Kodama observer. We will also obtain the Friedmann equations for f(R) and scalar tensor gravities based on the arguments presented in the first part.

Dezaki, Fatemeh Lalehgani

2014-01-01T23:59:59.000Z

263

The first law of thermodynamics as the origin of the expansion law of the universe  

E-Print Network [OSTI]

In a recent paper, Padmanabhan suggested that the expansion of the universe is attributed to the difference between the number of degrees of freedom on a holographic surface and the bulk degrees of freedom inside it \\cite{T. Padmanabhan1}. In this work, we argue that the first law of thermodynamics is the origin of the expansion law of the universe. We will, then, use this idea to obtain a generalized form of the expansion law for a Kodama observer. We will also obtain the Friedmann equations for f(R) and scalar tensor gravities based on the arguments presented in the first part.

Fatemeh Lalehgani Dezaki; Behrouz Mirza

2014-06-14T23:59:59.000Z

264

LOW LEVEL LIQUID RADIOACTIVE WASTE TREATMENT AT MURMANSK, RUSSIA: FACILITY UPGRADE AND EXPANSION  

SciTech Connect (OSTI)

Today there exist many almost overfilled storage tanks with liquid radioactive waste in the Russian Federation. This waste was generated over several years by the civil and military utilization of nuclear power. The current waste treatment capacity is either not available or inadequate. Following the London Convention, dumping of the waste in the Arctic seas is no longer an alternative. Waste is being generated from today's operations, and large volumes are expected to be generated from the dismantling of decommissioned nuclear submarines. The US and Norway have an ongoing co-operation project with the Russian Federation to upgrade and expand the capacity of a treatment facility for low level liquid waste at the RTP Atomflot site in Murmansk. The capacity will be increased from 1,200 m{sup 3}/year to 5,000 m{sup 3} /year. The facility will also be able to treat high saline waste. The construction phase will be completed the first half of 1998. This will be followed by a start-up and a one year post-construction phase, with US and Norwegian involvement for the entire project. The new facility will consist of 9 units containing various electrochemical, filtration, and sorbent-based treatment systems. The units will be housed in two existing buildings, and must meet more stringent radiation protection requirements that were not enacted when the facility was originally designed. The US and Norwegian technical teams have evaluated the Russian design and associated documentation. The Russian partners send monthly progress reports to US and Norway. Not only technical issues must be overcome but also cultural differences resulting from different methods of management techniques. Six to eight hour time differentials between the partners make real time decisions difficult and relying on electronic age tools becomes extremely important. Language difficulties is another challenge that must be solved. Finding a common vocabulary, and working through interpreters make the process very vulnerable. Each of these obstacles can be overcome when there is a common goal and vision shared by all parties and adequate funds are provided to accomplish the task. The upgrading and expansion of this facility and the construction of a similar facility on the Far East coast of Russia will enable the Russians to sign the London Convention dumping prohibition. This project is one of the first waste management construction projects in the north-west of Russia with foreign contribution. Its success may open for additional co-operative projects with Russia in the future.

BOWERMAN,B.; CZAJKOWSKI,C.; DYER,R.S.; SORLIE,A.

2000-03-01T23:59:59.000Z

265

Vacancies in ordered and disordered binary alloys treated with the cluster expansion A. Van der Ven and G. Ceder  

E-Print Network [OSTI]

Vacancies in ordered and disordered binary alloys treated with the cluster expansion A. Van der Ven far neglected the presence of vacancies. Here, we invoke a local cluster expansion as a perturbation to the standard binary cluster expansion to model the equilibrium vacancy concentration in a binary alloy

Ceder, Gerbrand

266

Uranium hexafluoride liquid thermal expansion, elusive eutectic with hydrogen fluoride, and very first production using chlorine trifluoride  

SciTech Connect (OSTI)

Three unusual incidents and case histories involving uranium hexafluoride in the enrichment facilities of the USA in the late 1940`s and early 1950`s are presented. The history of the measurements of the thermal expansion of liquids containing fluorine atoms within the molecule is reviewed with special emphasis upon uranium hexafluoride. A comparison is made between fluorinated esters, fluorocarbons, and uranium hexafluoride. The quantitative relationship between the thermal expansion coefficient, a, of liquids and the critical temperature, T{sub c} is presented. Uranium hexafluoride has an a that is very high in a temperature range that is used by laboratory and production workers - much higher than any other liquid measured. This physical property of UF{sub 6} has resulted in accidents involving filling the UF{sub 6} containers too full and then heating with a resulting rupture of the container. Such an incident at a uranium gaseous diffusion plant is presented. Production workers seldom {open_quotes}see{close_quotes} uranium hexafluoride. The movement of UF{sub 6} from one container to another is usually trailed by weight, not sight. Even laboratory scientists seldom {open_quotes}see{close_quotes} solid or liquid UF{sub 6} and this can be a problem at times. This inability to {open_quotes}see{close_quotes} the UF{sub 6}-HF mixtures in the 61.2{degrees}C to 101{degrees}C temperature range caused a delay in the understanding of the phase diagram of UF{sub 6}-HF which has a liquid - liquid immiscible region that made the eutectic composition somewhat elusive. Transparent fluorothene tubes solved the problem both for the UF{sub 6}-HF phase diagram as well as the UF{sub 6}-HF-CIF{sub 3} phase diagram with a miscibility gap starting at 53{degrees}C. The historical background leading to the first use of CIF{sub 3} to produce UF{sub 6} in both the laboratory and plant at K-25 is presented.

Rutledge, G.P. [Central Environmental, Inc., Anchorage, AK (United States)

1991-12-31T23:59:59.000Z

267

Studies of the geochemical stability of a salt-saturated expansive grout. Final report, October 1986-June 1987  

SciTech Connect (OSTI)

Laboratory experiments were conducted on several aspects of durability of grout in the special environment of a repository for radioactive wastes in bedded halite rock. Variables tested include solubility of grout components, phase changes, and mobility of chloride relative to interfaces with rock and brine or freshwater. The grout tested had large percentages of both chloride and sulfate. Chloride was more mobile when the grout was exposed to freshwater, and sulfate when exposed to brine. Removal of chloride from the grout accompanied loss of chloroaluminate phase, rather than simply dissolution of sodium chloride. However, chloride gradients were not apparently related to an interface between grout and halite rock. With extended exposure to brine or freshwater, calcium represented the largest fraction of mass loss, as determined by analyses of exposure solutions. Sulfate loss was the second largest. This effect increased with time and temperature of exposure. Volume increase of test specimens indicated continued or renewed expansion, even after the initial curing or storage period (28 days or 9 months), when the grout was exposed to water or brine. The combination of volume increase with mass loss suggests a density decrease, but this did not cause loss of physical integrity of specimens.

Wakeley, L.D.; Poole, T.S.

1987-09-01T23:59:59.000Z

268

Plasma Resonance and Remaining Josephson Coupling in the “Decoupled Vortex Liquid Phase” in Layered Superconductors  

Science Journals Connector (OSTI)

We relate the frequency of the Josephson plasma resonance in layered superconductors with the frequency dependent superconducting response. We demonstrate that the sharp resonance can persist even when the global superconducting coherence is broken provided the resonance frequency is larger than the frequency of interlayer phase slips. In this situation the plasma frequency is determined by the average Josephson energy, which can be calculated using the high temperature expansion. We also find the temperature dependence of the average Josephson energy from the Monte Carlo simulations and determine the applicability region of the high temperature expansion.

A. E. Koshelev

1996-10-28T23:59:59.000Z

269

Energy Infrastructure Events and Expansions Year-in-Review 2011 Available  

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

Energy Infrastructure Events and Expansions Year-in-Review 2011 Energy Infrastructure Events and Expansions Year-in-Review 2011 Available (April 2012) Energy Infrastructure Events and Expansions Year-in-Review 2011 Available (April 2012) May 1, 2012 - 3:15pm Addthis The Office of Electricity Delivery and Energy Reliability has released the Energy Infrastructure Events and Expansions Year-in-Review: 2011. This publication provides a summary of significant energy disruptions and infrastructure changes that occurred in the United States throughout 2011. The focus is on the United States, but international events that impacted the United States are also reported. The 2011 YIR is based primarily on information reported in the Energy Assurance Daily (EAD) between January 1, 2011 and December 31, 2011. The full 2011 Year-in-Review is available for download.

270

Copper Mountain Expansion I and II Solar Power Plant | Open Energy  

Open Energy Info (EERE)

Expansion I and II Solar Power Plant Expansion I and II Solar Power Plant Jump to: navigation, search Name Copper Mountain Expansion I and II Solar Power Plant Facility Copper Mountain Expansion I and II Sector Solar Facility Type Photovoltaic Developer First Solar/Sempra Location Boulder City, Nevada Coordinates 35.9785911°, -114.8324851° 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":35.9785911,"lon":-114.8324851,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

271

Secretary Chu Celebrates Expansion of Lithium-Ion Battery Production in  

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

Celebrates Expansion of Lithium-Ion Battery Celebrates Expansion of Lithium-Ion Battery Production in North Carolina Secretary Chu Celebrates Expansion of Lithium-Ion Battery Production in North Carolina July 26, 2011 - 3:15pm Addthis Secretary Chu joins local officials and dignitaries for Celgard's ribbon-cutting. | Photo courtesy of Celgard Secretary Chu joins local officials and dignitaries for Celgard's ribbon-cutting. | Photo courtesy of Celgard Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What are the key facts? Celgard received $49 million in Recovery Act funding to help expand its Charlotte operations and build a new lithium-ion battery separator facility in Concord. With the help of Recovery Act-funded expansions, Celgard expects to double its production capacity by 2012 and since January 2010, the company

272

Energy Infrastructure Events and Expansions Year-in-Review 2011 Available  

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

Infrastructure Events and Expansions Year-in-Review 2011 Infrastructure Events and Expansions Year-in-Review 2011 Available (April 2012) Energy Infrastructure Events and Expansions Year-in-Review 2011 Available (April 2012) May 1, 2012 - 3:15pm Addthis The Office of Electricity Delivery and Energy Reliability has released the Energy Infrastructure Events and Expansions Year-in-Review: 2011. This publication provides a summary of significant energy disruptions and infrastructure changes that occurred in the United States throughout 2011. The focus is on the United States, but international events that impacted the United States are also reported. The 2011 YIR is based primarily on information reported in the Energy Assurance Daily (EAD) between January 1, 2011 and December 31, 2011. The full 2011 Year-in-Review is available for download.

273

Secretary Chu Celebrates Expansion of Lithium-Ion Battery Production in  

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

Celebrates Expansion of Lithium-Ion Battery Celebrates Expansion of Lithium-Ion Battery Production in North Carolina Secretary Chu Celebrates Expansion of Lithium-Ion Battery Production in North Carolina July 26, 2011 - 3:15pm Addthis Secretary Chu joins local officials and dignitaries for Celgard's ribbon-cutting. | Photo courtesy of Celgard Secretary Chu joins local officials and dignitaries for Celgard's ribbon-cutting. | Photo courtesy of Celgard Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs What are the key facts? Celgard received $49 million in Recovery Act funding to help expand its Charlotte operations and build a new lithium-ion battery separator facility in Concord. With the help of Recovery Act-funded expansions, Celgard expects to double its production capacity by 2012 and since January 2010, the company

274

U.S.-Chinese Agreement Provides Path to Further Expansion of Nuclear Energy  

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

-Chinese Agreement Provides Path to Further Expansion of -Chinese Agreement Provides Path to Further Expansion of Nuclear Energy in China U.S.-Chinese Agreement Provides Path to Further Expansion of Nuclear Energy in China December 16, 2006 - 9:46am Addthis BEIJING, CHINA - U.S. Department of Energy (DOE) Secretary Samuel W. Bodman and Chinese Chairman of National Development and Reform Commission (NDRC) Ma Kai today signed a Memorandum of Understanding (MOU) that will pave the way for Westinghouse Electric Company to construct four civilian nuclear power plants in China. This agreement illustrates the United States government's support of the Chinese expansion and use of safe, emissions-free nuclear power and the related technology transfer. "This is an exciting day for the U.S. nuclear industry. This agreement is

275

Detection and Quantification of Expansive Clay Minerals in Geologically-Diverse Texas Aggregate Fines  

E-Print Network [OSTI]

and asphalt concretes. The Texas Department of Transportation (TXDOT) and Texas A&M Transportation Institute (TTI) evaluated the methylene blue adsorption test for its potential to identify and estimate quantities of expansive clays in aggregate stockpiles...

Russell, George 1983-

2012-11-28T23:59:59.000Z

276

Pressurized heat treatment of glass-ceramic to control thermal expansion  

DOE Patents [OSTI]

A method of producing a glass-ceramic having a specified thermal expansion value is disclosed. The method includes the step of pressurizing the parent glass material to a predetermined pressure during heat treatment so that the glass-ceramic produced has a specified thermal expansion value. Preferably, the glass-ceramic material is isostatically pressed. A method for forming a strong glass-ceramic to metal seal is also disclosed in which the glass-ceramic is fabricated to have a thermal expansion value equal to that of the metal. The determination of the thermal expansion value of a parent glass material placed in a high-temperature environment is also used to determine the pressure in the environment.

Kramer, Daniel P. (Dayton, OH)

1985-01-01T23:59:59.000Z

277

Thermal expansion of Mg(OH)2 brucite under high pressure and pressure dependence of entropy  

Science Journals Connector (OSTI)

An equation of state for Mg(OH)2 brucite under high-pressure and high-temperature conditions ... -ray diffraction. Pressure dependence of entropy of brucite has been calculated with thermal expansion coefficient....

H. Fukui; O. Ohtaka; T. Suzuki; K. Funakoshi

2003-10-01T23:59:59.000Z

278

Comment on ``Success of collinear expansion in the calculation of induced gluon emission''  

E-Print Network [OSTI]

We show that the arguments against our recent paper on the failure of the collinear expansion in the calculation of the induced gluon emission raised by X.N. Wang are either incorrect or irrelevant.

P. Aurenche; B. G. Zakharov; H. Zaraket

2008-06-01T23:59:59.000Z

279

White food-type sorghum in direct-expansion extrusion applications  

E-Print Network [OSTI]

distribution similar to corn meal produced extrudates with higher expansion, lower bulk density and similar texture. In addition, sorghum extrudates were rated equal to corn meal extrudates by a taste panel for appearance, flavor, texture and overall...

Acosta Sanchez, David

2004-09-30T23:59:59.000Z

280

SAVANNAH HARBOR EXPANSION PROJECT CHATHAM COUNTY, GEORGIA AND JASPER COUNTY, SOUTH CAROLINA  

E-Print Network [OSTI]

SAVANNAH HARBOR EXPANSION PROJECT CHATHAM COUNTY, GEORGIA AND JASPER COUNTY, SOUTH CAROLINA 22 (Kings Island Turning Basin at Stations 98+500 to 100+500) 5 feet deeper (to an authorized navigation #12

US Army Corps of Engineers

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

MULTISPECIES VIRIAL EXPANSIONS SABINE JANSEN, STEPHEN J. TATE, DIMITRIOS TSAGKAROGIANNIS, AND DANIEL UELTSCHI  

E-Print Network [OSTI]

MULTISPECIES VIRIAL EXPANSIONS SABINE JANSEN, STEPHEN J. TATE, DIMITRIOS TSAGKAROGIANNIS. JANSEN, S.J. TATE, D.TSAGKAROGIANNIS, AND D. UELTSCHI 5.27]. A droplet can comprise arbitrarily many

Ueltschi, Daniel

282

Leptodermous expansion of nuclear ground state energies and the anomaly in the nuclear curvature energy  

Science Journals Connector (OSTI)

The leptodermous expansion of the total ground state energy of a nucleus into volume, surface, curvature and gauss curvature contributions has been studied starting from a semi-classical energy density formali...

S K Kataria; Aruna Nijasure; V S Ramamurthy; A K Dutta

1994-02-01T23:59:59.000Z

283

The Appell hypergeometric expansions of the solutions of the general Heun equation  

E-Print Network [OSTI]

Starting from the equation obeyed by the derivative, we construct several expansions of the solutions of the general Heun equation in terms of the Appell generalized hypergeometric functions of two variables of the fist kind. Several cases when the expansions reduce to ones written in terms of simpler mathematical functions such as the incomplete Beta function or the Gauss hypergeometric function are identified. The conditions for deriving finite-sum solutions via termination of the series are discussed. In general, the coefficients of the expansions obey four-term recurrence relations; however, there exist certain sets of the parameters for which the recurrence relations involve only two terms, though not successive. The coefficients of the expansions are then explicitly calculated and the general solution of the Heun equation is constructed in terms of the Gauss hypergeometric functions.

A. M. Ishkhanyan

2014-05-12T23:59:59.000Z

284

Ninja: Automated Integrand Reduction via Laurent Expansion for One-Loop Amplitudes  

E-Print Network [OSTI]

We present the public C++ library Ninja, which implements the Integrand Reduction via Laurent Expansion method for the computation of one-loop integrals. The algorithm is suited for applications to complex one-loop processes.

Tiziano Peraro

2014-03-05T23:59:59.000Z

285

Allocation procedure in ethanol production system from corn grain i. system expansion  

Science Journals Connector (OSTI)

We investigated the system expansion approach to net energy analysis for ethanol production from domestic corn grain. Production systems included in this study are ethanol production from corn dry milling and cor...

Seungdo Kim; Bruce E. Dale

2002-07-01T23:59:59.000Z

286

Small Closed-Form CI Expansions for Electronic g-Tensor Calculations  

Science Journals Connector (OSTI)

Small Closed-Form CI Expansions for Electronic g-Tensor Calculations ... Applicability of the multi-reference double-excitation CI (MRD-CI) method to the calculation of electronic wavefunctions and comparison with related techniques ...

Gerald H. Lushington

2000-03-03T23:59:59.000Z

287

The equilibrium response to idealized thermal forcings in a comprehensive GCM: implications for recent tropical expansion  

E-Print Network [OSTI]

Johanson, C. M. and Fu, Q. : Hadley cell widening: ModelT. : Expansion of the Hadley cell under global warming,J. , and Chen, G. : Width of the Hadley cell in simple and

Allen, R. J.; Norris, J. R.; Sherwood, S. C.; Zender, C. S.

2012-01-01T23:59:59.000Z

288

Understanding Hadley Cell Expansion versus Contraction: Insights from Simplified Models and Implications for Recent Observations  

Science Journals Connector (OSTI)

This study seeks a deeper understanding of the causes of Hadley Cell (HC) expansion, as projected under global warming, and HC contraction, as observed under El Niño. Using an idealized general circulation model, the authors show that a thermal ...

Neil F. Tandon; Edwin P. Gerber; Adam H. Sobel; Lorenzo M. Polvani

2013-06-01T23:59:59.000Z

289

Exploration of Resource and Transmission Expansion Decisions in the Western Renewable Energy Zone Initiative  

E-Print Network [OSTI]

Cost with Starting Point Assumptions ($/MWh) Energy- Weighted Median (10th; 90th Percentile) Hydro Biomass Geothermalenergy levels on resource composition, costs, and transmission expansion Impact 12% Renewables (TWh/yr) Geothermal

Mills, Andrew D

2011-01-01T23:59:59.000Z

290

Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC - FE...  

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

0-161-LNG Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC - FE Dkt. No. 10-161-LNG On May 17, 2013, the Office of Fossil Energy of the Department of Energy (DOEFE) issued...

291

Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC - FE...  

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

1-161-LNG Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC - FE Dkt. No. 11-161-LNG On November 15, 2013, the Office of Fossil Energy of the Department of Energy (DOEFE)...

292

Physical, mineralogical, and micromorphological properities of expansive soil treated at different temperature  

Science Journals Connector (OSTI)

Different characterizations were carried out on unheated expansive soil and samples heated at different temperature. The samples are taken from the western outskirts of Nanning of Guangxi Province, China. In the present paper, the mineral and chemical ...

Jian Li, Xiyong Wu, Long Hou

2014-01-01T23:59:59.000Z

293

Consolidation theories for saturated-unsaturated soils and numerical simulation of residential buildings on expansive soils  

E-Print Network [OSTI]

to perform uncoupled two or three dimensional consolidation calculation for both expansive soils and collapsible soils. From the analysis, the equivalent effective stress and excessive pore water pressure can be easily calculated. At the same time...

Zhang, Xiong

2005-11-01T23:59:59.000Z

294

Calculation of the Green's function from high- and low-density series expansions for disordered transport  

E-Print Network [OSTI]

We investigate density expansions for the configurationally averaged Green's function for a random walk on a (site) disordered lattice. Two-point Padé summation techniques are used in conjunction with scaling arguments to examine behavior near...

Calef, Daniel F.; Friesner, Richard; Korzeniewski, Gregory; Laird, Brian Bostian; Silbey, Robert

1984-05-01T23:59:59.000Z

295

Impact of unit commitment constraints on generation expansion planning with renewables  

E-Print Network [OSTI]

Growing use of renewables pushes thermal generators against operating constraints - e.g. ramping, minimum output, and operating reserves - that are traditionally ignored in expansion planning models. We show how including ...

Palmintier, Bryan Stephen

296

Operation and maintenance of Fermilab`s satellite refrigerator expansion engines  

SciTech Connect (OSTI)

Fermilab`s superconducting Tevatron accelerator is cooled to liquid helium temperatures by 24 satellite refrigerators, each of which uses for normal operations a reciprocating `wet` expansion engine. These expanders are basically Process System (formerly Koch) Model 1400 expanders installed in standalone cryostats designed by Fermilab. This paper will summarize recent experience with operations and maintenance of these expansion engines. Some of the statistics presented will include total engine hours, mean time between major and minor maintenance, and frequent causes of major maintenance.

Soyars, W.M.

1996-09-01T23:59:59.000Z

297

Green's Function expansion of scalar and vector fields in the presence of a medium  

E-Print Network [OSTI]

Based on a canonical approach and functional-integration techniques, a series expansion of Green's function of a scalar field, in the presence of a medium, is obtained. A series expansion for Lifshitz-energy, in finite-temperature, in terms of the susceptibility of the medium is derived and the whole formalism is generalized to the case of electromagnetic field in the presence of some dielectrics. A covariant formulation of the problem is presented.

Fardin Kheirandish; Shahriar Salimi

2010-10-17T23:59:59.000Z

298

Unified picture of the BCS nuclear model by use of the 1/N expansion  

Science Journals Connector (OSTI)

Several BCS-type approximations encountered in the literarature were correlated using a 1/N expansion over a set of dispersion type energy equations, which are the exact solution of a system of fermions interacting through a pure pairing force. One of the interesting results obtained is that the BCS+QRPA approximation coincides with the first order term of the 1/N expansion. © 1996 The American Physical Society.

Mauro Kyotoku; C. L. Lima; Hsi-Tseng Chen

1996-05-01T23:59:59.000Z

299

Effective field theory, three-loop perturbative expansion, and their experimental implications in graphene many-body effects  

E-Print Network [OSTI]

Many-body electron-electron interaction effects are theoretically considered in monolayer graphene from a continuum effective field-theoretic perspective by going beyond the standard leading-order perturbative renormalization group (RG) analysis. Given that the bare fine structure constant in graphene is of order unity, which is neither small to justify a perturbative expansion nor large enough for strong-coupling theories to be applicable, the problem is a difficult one, with some similarity to 2+1-dimensional strong-coupling quantum electrodynamics (QED). In this work, we take a systematic and comprehensive analytical approach, working primarily at the Dirac point (intrinsic graphene), by going up to three loops in the diagrammatic expansion to both ascertain the validity of perturbation theory and to estimate quantitatively higher-order renormalization effects. While no direct signatures for non-Fermi liquid behavior at the Dirac point have yet been observed experimentally, there is ample evidence for the interaction-induced renormalization of the graphene velocity as the carrier density approaches zero. We provide a critical comparison between theory and experiment, using both bare- and screened-interaction (RPA) calculations. We find that while the one-loop RG analysis gives reasonable agreement with the experimental data, especially when screening and finite-density effects are included through the RPA, the two-loop analysis reveals a strong-coupling critical point in suspended graphene, signifying either a quantum phase transition or a breakdown of the weak-coupling RG approach. We show that the latter is more likely by adapting Dyson's argument for the breakdown of perturbative QED to the case of graphene. We propose future experiments and theoretical directions to make further progress on this important and difficult problem.

Edwin Barnes; E. H. Hwang; R. E. Throckmorton; S. Das Sarma

2014-01-27T23:59:59.000Z

300

Characterization of plasma expansion dynamics in a high power diode with a carbon-fiber-aluminum cathode  

SciTech Connect (OSTI)

Thermal plasma expansion is characterised during the operation of a high power diode with an explosive emission carbon-fiber-aluminum cathode driven by a 250?kV, 150?ns accelerating pulse. It is found that a quasi-stationary state of plasma expansion is obtained during the main part of the accelerating pulse and the whole plasma expansion exhibits an “U”-shape velocity evolution. A theoretical model describing the dynamics of plasma expansion is developed, which indicates that the plasma expansion velocity is determined by equilibrium between the diode current density and plasma thermal electron current density.

Ju, J.-C., E-mail: jujinchuan@126.com [College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China); Laboratoire de Physique des Gaz et des Plasmas, CNRS-Université Paris-Sud, Orsay 91405 (France); Liu, L.; Cai, D. [College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

2014-06-09T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

NGNP PHASE I REVIEW  

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

REVIEW REVIEW NEAC REACTOR TECHNOLOGY SUBCOMMITTEE FINAL REPORT JUNE 15, 2011 EPACT 2005 REQUIREMENTS * FIRST PROJECT PHASE REVIEW-On a determination by the Secretary that the appropriate activities under the first project phase under subsection (b)(1) are nearly complete, the Secretary shall request the NERAC to conduct a comprehensive review of the Project and to report to the Secretary the recommendation of the NERAC concerning whether the Project is ready to proceed to the second project phase under subsection (b)(2) NGNP PROJECT PHASES (1) FIRST PHASE.-A first project phase shall be conducted to- (A) select and validate the appropriate technology under subsection (a)(1); (B) carry out enabling research, development, and demonstration activities on technologies and components under

302

Holographic Magnetic Phase Transition  

E-Print Network [OSTI]

We study four-dimensional interacting fermions in a strong magnetic field, using the holographic Sakai-Sugimoto model of intersecting D4 and D8 branes in the deconfined, chiral-symmetric parallel phase. We find that as the magnetic field is varied, while staying in the parallel phase, the fermions exhibit a first-order phase transition in which their magnetization jumps discontinuously. Properties of this transition are consistent with a picture in which some of the fermions jump to the lowest Landau level. Similarities to known magnetic phase transitions are discussed.

Gilad Lifschytz; Matthew Lippert

2009-06-21T23:59:59.000Z

303

Degenerate Metric Phase Boundaries  

E-Print Network [OSTI]

The structure of boundaries between degenerate and nondegenerate solutions of Ashtekar's canonical reformulation of Einstein's equations is studied. Several examples are given of such "phase boundaries" in which the metric is degenerate on one side of a null hypersurface and non-degenerate on the other side. These include portions of flat space, Schwarzschild, and plane wave solutions joined to degenerate regions. In the last case, the wave collides with a planar phase boundary and continues on with the same curvature but degenerate triad, while the phase boundary continues in the opposite direction. We conjecture that degenerate phase boundaries are always null.

Ingemar Bengtsson; Ted Jacobson

1999-01-23T23:59:59.000Z

304

During Phase 3, WIPP  

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

UPDATE: April 14, 2014 Phase 3 activities begin Two teams re-entered the WIPP underground facility on Saturday, moving closer to suspected location of the February 14...

305

NGNP PHASE I REVIEW  

Energy Savers [EERE]

and start up operations of the prototype nuclear reactor and its associated hydrogen or electricity production facilities. Scope of Work for Review * Review Phase I reports in...

306

Early stage expansion and time-resolved spectral emission of laser-induced  

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

Early stage expansion and time-resolved spectral emission of laser-induced Early stage expansion and time-resolved spectral emission of laser-induced plasma from polymer Title Early stage expansion and time-resolved spectral emission of laser-induced plasma from polymer Publication Type Journal Article Year of Publication 2009 Authors Boueri, Myriam, Matthieu Baudelet, Jin Yu, Xianglei Mao, Samuel S. Mao, and Richard E. Russo Journal Applied Surface Science Volume 255 Issue 24 Pagination 9566-9571 Date Published 09/2009 Keywords Early stage plasma expansion, Laser ablation of polymer, Plasma spectral emission Abstract In the nanosecond laser ablation regime, absorption of laser energy by the plasma during its early stage expansion critically influences the properties of the plasma and thus its interaction with ambient air. These influences can significantly alter spectral emission of the plasma. For organic samples especially, recombination of the plasma with the ambient air leads to interfering emissions with respect to emissions due to native species evaporated from the sample. Distinguishing interfering emissions due to ambient air represents a critical issue for the application of laser-induced breakdown spectroscopy (LIBS) to the analysis of organic materials. In this paper, we report observations of early stage expansion and interaction with ambient air of the plasma induced on a typical organic sample (nylon) using timeresolved shadowgraph. We compare, in the nanosecond ablation regime, plasmas induced by infrared (IR) laser pulses (1064 nanometers) and ultraviolet (UV) laser pulses (266 nanometers). Nanosecond ablation is compared with femtosecond ablation where the post-ablation interaction is absent. Subsequent to the early stage expansion, we observe for each studied ablation regime, spectral emission from CN, a typical radical for organic and biological samples. Time-resolved LIBS allows identifying emissions from native molecular species and those due to recombination with ambient air through their different time evolution behaviors.

307

A Phase Odyssey  

SciTech Connect (OSTI)

We are introduced to the effects of phase from the earliest days of our childhood, from the nursery rhyme above (or its less verbose for 'Twinkle, Twinkle Little Star') to the shimmer over a hot road and the network of bright lines at the bottom of a swimming pool. These are all manifestations of phase. And there are many more.

Nugent, K.A.; Paganin, D.; Gureyev, T.E. (Melbourne)

2009-01-06T23:59:59.000Z

308

ARM - Measurement - Hydrometeor phase  

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

phase phase ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor phase Hydrometeor phase such as liquid ice or mixed phase Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Value-Added Products VISST : Minnis Cloud Products Using Visst Algorithm (Process) VISSTPX04G08V2MINNIS : VISST-derived pixel-level products from satellite GOES8, version 2 VISSTPX04G08V3MINNIS : VISST-derived pixel-level products from satellite GOES8, version 3

309

Simulative research on the expansion of cathode plasma in high-current electron beam diode  

SciTech Connect (OSTI)

The expansion of cathode plasma has long been recognized as a limiting factor in the impedance lifetime of high-current electron beam diode. Realistic modeling of such plasma is of great necessity in order to discuss the dynamics of cathode plasma. Using the method of particle-in-cell, the expansion of cathode plasma is simulated in this paper by a scaled-down diode model. It is found that the formation of cathode plasma increases the current density in the diode. This consequently leads to the decrease of the potential at plasma front. Once the current density has been increased to a certain value, the potential at plasma front would then be equal to or lower than the plasma potential. Then the ions would move towards the anode, and the expansion of cathode plasma is thereby formed. Different factors affecting the plasma expansion velocity are discussed in this paper. It is shown that the decrease of proton genatation rate has the benefit of reducing the plasma expansion velocity.

Xu Qifu; Liu Lie [College of Photoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

2012-09-15T23:59:59.000Z

310

Statement from Energy Secretary Samuel W. Bodman on the Expansion of the  

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

Statement from Energy Secretary Samuel W. Bodman on the Expansion Statement from Energy Secretary Samuel W. Bodman on the Expansion of the Strategic Petroleum Reserve to 1.5 Billion Statement from Energy Secretary Samuel W. Bodman on the Expansion of the Strategic Petroleum Reserve to 1.5 Billion January 23, 2007 - 10:15am Addthis "Later today President Bush will announce his plan to double our nation's Strategic Petroleum Reserve to 1.5 billion barrels. I believe that expanding the Strategic Petroleum Reserve is a wise and prudent policy decision that will provide an additional layer of protection for our nation's energy security. "Originally established in 1975 in the aftermath of the Arab oil embargo, the Strategic Petroleum Reserve is a national asset that can be used in the case of severe supply disruption. During my tenure alone, we've used it a

311

Statement from Energy Secretary Samuel W. Bodman on the Expansion of the  

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

the Expansion the Expansion of the Strategic Petroleum Reserve to 1.5 Billion Statement from Energy Secretary Samuel W. Bodman on the Expansion of the Strategic Petroleum Reserve to 1.5 Billion January 23, 2007 - 10:15am Addthis "Later today President Bush will announce his plan to double our nation's Strategic Petroleum Reserve to 1.5 billion barrels. I believe that expanding the Strategic Petroleum Reserve is a wise and prudent policy decision that will provide an additional layer of protection for our nation's energy security. "Originally established in 1975 in the aftermath of the Arab oil embargo, the Strategic Petroleum Reserve is a national asset that can be used in the case of severe supply disruption. During my tenure alone, we've used it a number of times, most notably in the aftermath of Hurricanes Katrina and

312

RECORD OF CATEGORICAL EXCLUSION DETERMINATION Ault Substation Expansion and Equipment Additions, Weld County, CO  

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

Ault Substation Expansion and Equipment Additions, Weld County, CO Ault Substation Expansion and Equipment Additions, Weld County, CO A. Proposed Action: Western proposes to expand the existing Ault SUbstation and add electrical equipment. The expansion would be within the existing fee-owned land. B. Number and Title of Categorical Excluison Being Applied . B4.11: Construction of electric power substations (including switching stations and support facilities) with power deliver at 230-kV or below, or modification (other than voltage increases) of existing sutstations and support facilities .. .. C. Regulatory Requirements in 10 CFR 1021.410(b): (Refer to full text in regulation ). (1) The proposed action fits within a class of actions that is listed in Appendix A or B to Subpart D. For classes of actions, listed in Appendix B, the following conditions are

313

The system dynamics simulation of the expansion of the Panama Canal  

Science Journals Connector (OSTI)

The expansion of the Panama Canal could be the largest project attempted by the Republic of Panama in its 100 years of existence. The objective of this simulation study is to use the Canal Expansion Project to develop and demonstrate how more precise and applied concepts that involve complex decision-making processes can be used in a large 'system of systems'. It is an attempt to explain the decision-making processes for complex systems and develop a model that will help with the political, social and economic decision-making processes that are involved in this very large project. The challenges that are involved in this research initiative include developing the parametric expressions that explain the dynamical intricacies and validation of the expansion project.

Humberto R. Alvarez A.; Dario Solis; Arnoldo R. Cano S.; Luis Rabelo; Serge Sala-Diakanda

2009-01-01T23:59:59.000Z

314

Heat Kernel Asymptotic Expansion on Unbounded Domains with Polynomially Confining Potentials  

E-Print Network [OSTI]

In this paper we analyze the small-t asymptotic expansion of the trace of the heat kernel associated with a Laplace operator endowed with a spherically symmetric polynomially confining potential on the unbounded, d-dimensional Euclidean space. To conduct this study, the trace of the heat kernel is expressed in terms of its partially resummed form which is then represented as a Mellin-Barnes integral. A suitable contour deformation then provides, through the use of Cauchy's residue theorem, closed formulas for the coefficients of the asymptotic expansion. The general expression for the asymptotic expansion, valid for any dimension and any polynomially confining potential, is then specialized to two particular cases: the general quartic and sestic oscillator potentials.

Guglielmo Fucci

2014-05-14T23:59:59.000Z

315

Large-Spin and Large-Winding Expansions of Giant Magnons and Single Spikes  

E-Print Network [OSTI]

We generalize the method of our recent paper on large-spin expansions of Gubser-Klebanov-Polyakov (GKP) strings to the large-spin and large-winding expansions of finite-size giant magnons and finite-size single spikes. By expressing the energies of long open strings in RxS2 in terms of Lambert's W-function, we compute the leading, subleading and next-to-subleading series of classical exponential corrections to the dispersion relations of Hofman-Maldacena giant magnons and infinite-winding single spikes. We also compute the corresponding expansions in the doubled regions of giant magnons and single spikes that are respectively obtained when their angular and linear velocities become smaller or greater than unity.

Emmanuel Floratos; Georgios Linardopoulos

2014-06-03T23:59:59.000Z

316

Heat-kernel expansion on non compact domains and a generalised zeta-function regularisation procedure  

E-Print Network [OSTI]

Heat-kernel expansion and zeta function regularisation are discussed for Laplace type operators with discrete spectrum in non compact domains. Since a general theory is lacking, the heat-kernel expansion is investigated by means of several examples. It is pointed out that for a class of exponential (analytic) interactions, generically the non-compactness of the domain gives rise to logarithmic terms in the heat-kernel expansion. Then, a meromorphic continuation of the associated zeta function is investigated. A simple model is considered, for which the analytic continuation of the zeta function is not regular at the origin, displaying a pole of higher order. For a physically meaningful evaluation of the related functional determinant, a generalised zeta function regularisation procedure is proposed.

Guido Cognola; Emilio Elizalde; Sergio Zerbini

2006-01-13T23:59:59.000Z

317

Expansion Parallax for the Compact Planetary Nebula M2-43  

E-Print Network [OSTI]

We present high quality radio continuum observations made with the Very Large Array (VLA) at 3.6 cm at two epochs toward the planetary nebula M2-43. The comparison of the two epochs, obtained with a time separation of 4.07 years, clearly shows the expansion of the planetary nebula with an angular rate of 0.61 +/- 0.09 mas/year.Assuming that the expansion velocity in the plane of the sky (determined from these measurements) and the expansion velocity in the line of sight (determined from optical spectroscopy available in the literature) are equal, we find a distance to the planetary nebula of 6.9 +/- 1.5 kpc. This is the largest distance for a planetary nebula measured up to now with this technique.

L. Guzman; Y. Gomez; L. F. Rodriguez

2006-02-19T23:59:59.000Z

318

Ataxin-2 as potential disease modifier in C9ORF72 expansion carriers  

Science Journals Connector (OSTI)

Abstract Repeat expansions in chromosome 9 open reading frame 72 (C9ORF72) are an important cause of both motor neuron disease (MND) and frontotemporal dementia (FTD). Currently, little is known about factors that could account for the phenotypic heterogeneity detected in C9ORF72 expansion carriers. In this study, we investigated 4 genes that could represent genetic modifiers: ataxin-2 (ATXN2), non-imprinted in Prader-Willi/Angelman syndrome 1 (NIPA1), survival motor neuron 1 (SMN1), and survival motor neuron 2 (SMN2). Assessment of these genes, in a unique cohort of 331 C9ORF72 expansion carriers and 376 control subjects, revealed that intermediate repeat lengths in ATXN2 possibly act as disease modifier in C9ORF72 expansion carriers; no evidence was provided for a potential role of NIPA1, SMN1, or SMN2. The effects of intermediate ATXN2 repeats were most profound in probands with MND or FTD/MND (2.1% vs. 0% in control subjects, p = 0.013), whereas the frequency in probands with FTD was identical to control subjects. Though intermediate ATXN2 repeats were already known to be associated with MND risk, previous reports did not focus on individuals with clear pathogenic mutations, such as repeat expansions in C9ORF72. Based on our present findings, we postulate that intermediate ATXN2 repeat lengths may render C9ORF72 expansion carriers more susceptible to the development of MND; further studies are needed, however, to validate our findings.

Marka van Blitterswijk; Bianca Mullen; Michael G. Heckman; Matthew C. Baker; Mariely DeJesus-Hernandez; Patricia H. Brown; Melissa E. Murray; Ging-Yuek R. Hsiung; Heather Stewart; Anna M. Karydas; Elizabeth Finger; Andrew Kertesz; Eileen H. Bigio; Sandra Weintraub; Marsel Mesulam; Kimmo J. Hatanpaa; Charles L. White III; Manuela Neumann; Michael J. Strong; Thomas G. Beach; Zbigniew K. Wszolek; Carol Lippa; Richard Caselli; Leonard Petrucelli; Keith A. Josephs; Joseph E. Parisi; David S. Knopman; Ronald C. Petersen; Ian R. Mackenzie; William W. Seeley; Lea T. Grinberg; Bruce L. Miller; Kevin B. Boylan; Neill R. Graff-Radford; Bradley F. Boeve; Dennis W. Dickson; Rosa Rademakers

2014-01-01T23:59:59.000Z

319

1/z expansion for the Ising and Heisenberg models in an external field  

Science Journals Connector (OSTI)

Using an expansion in 1/z, where z is the coordination number of the lattice, we examine the effects of fluctuations on the magnetic susceptibility and specific heat of a spin-s ferromagnet in an external field. As expected, the first-order fluctuation correction to the transition temperature calculated from the zero-field susceptibility agrees with previous results obtained from the expansion of the order parameter. The temperature of the peak in the fluctuation specific heat of the Heisenberg model increases linearly with the external field.

X. W. Jiang and R. S. Fishman

1993-04-01T23:59:59.000Z

320

The Thermal Expansion, Elastic and Fracture Properties of Porous Cordierite at Elevated Temperatures  

SciTech Connect (OSTI)

The properties that determine the thermal shock resistance in materials are reported for porous cordierite, a leading candidate material for the fabrication of diesel particulate filters. Fracture toughness and slow crack growth tests were performed on test specimens obtained from the walls of diesel particulate filter monolithic substrates using the double-torsion test method at temperatures between 20 C and 900 C. The thermal expansion and elastic properties were characterized between 20 C and 1000 C. The role of the microstructure of porous cordierite in determining its unusual thermal expansion and elevated temperature Young's modulus and fracture toughness are discussed.

Shyam, Amit [ORNL; Lara-Curzio, Edgar [ORNL; Pandey, Amit [ORNL; Watkins, Thomas R [ORNL; More, Karren [Oak Ridge National Laboratory (ORNL)

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Multiobjective electric distribution system expansion planning using hybrid energy hub concept  

Science Journals Connector (OSTI)

This paper presents a novel approach for optimal electric distribution system expansion planning (OEDSEP) using a hybrid energy hub concept. The proposed method uses an energy hub model to explore the impacts of energy carrier systems on OEDSEP procedure. This algorithm decomposes the OEDSEP problem into three subproblems to achieve an optimal expansion planning of a system in which the investment and operational costs are minimized, while the reliability of the system is maximized. The algorithm was successfully tested in the present research for an urban distribution system.

Mehrdad Setayesh Nazar; Mahmood R. Haghifam

2009-01-01T23:59:59.000Z

322

Thermal expansion and lattice dynamics of RB66 compounds at low temperatures  

SciTech Connect (OSTI)

Thermal characteristics of the phonon and magnon subsystems of icosahedral borides RB66 (R = Gd, Tb, Dy, Ho, Eu, or Lu) have been studied based on the obtained experimental data on the thermal expansion of the borides and the earlier results on their heat capacity in the range of 2–300 K. The contribution to the expansion of borides containing paramagnetic R 3+ ions, which is characteristic of transition to the spin-glass state, has been revealed. The phonon spectrum moments of RB66 compounds and the Grüneisen parameters have been calculated.

Novikov, V V [Petrovsky Bryansk State University; Avdashchenko, D V [Petrovsky Bryansk State University; Mitroshenkov, N V [Petrovsky Bryansk State University; Matovnikov, A V [Petrovsky Bryansk State University; Budko, Serguei L [Ames Laboratory

2014-10-01T23:59:59.000Z

323

Expansion of a Bose-Einstein Condensate in the Presence of Disorder  

SciTech Connect (OSTI)

Expansion of a Bose-Einstein condensate (BEC) is studied in the presence of a random potential. The expansion is controlled by a single parameter ({mu}{tau}{sub eff}/({Dirac_h}/2{pi})), where {mu} is the chemical potential, prior to the release of the BEC from the trap, and {tau}{sub eff} is a transport relaxation time which characterizes the strength of the disorder. Repulsive interactions (nonlinearity) facilitate transport and can lead to diffusive spreading of the condensate which, in the absence of interactions, would have remained localized in the vicinity of its initial location.

Shapiro, Boris [Department of Physics, Technion-Israel Institute of Technology, Haifa 32000 (Israel)

2007-08-10T23:59:59.000Z

324

OPEC production: Capital limitations, environmental movements may interfere with expansion plans  

SciTech Connect (OSTI)

Obtaining capital is a critical element in the production expansion plans of OPEC member countries. Another issue that may impact the plans is the environmental taxes that may reduce the call on OPEC oil by 5 million b/d in 2000 and about 16 million b/d in the year 2010. This concluding part of a two-part series discusses the expansion possibilities of non-Middle East OPEC members, OPEC's capital requirements, and environmental concerns. Non-Middle East OPEC includes Algeria, Gabon, Indonesia, Libya, Nigeria, and Venezuela.

Ismail, I.A.H. (Organization of the Petroleum Exporting Countries, Vienna (Austria))

1994-05-09T23:59:59.000Z

325

Thermal expansion of multiwall carbon nanotube reinforced nanocrystalline silver matrix composite  

SciTech Connect (OSTI)

Multiwall carbon nanotube reinforced silver matrix composite was fabricated by novel molecular level mixing method, which involves nucleation of Ag ions inside carbon nanotube dispersion at the molecular level. As a result the carbon nanotubes get embedded within the powder rather than on the surfaces. Micro structural characterization by X- ray diffraction and scanning electron microscopy reveals that the nanotubes are homogeneously dispersed and anchored within the matrix. The thermal expansion of the composite with the multiwall nanotube content (0, 1.5 vol%) were investigated and it is found that coefficient of thermal expansion decreases with the addition of multiwall nanotube content and reduce to about 63% to that of pure Ag.

Sharma, Manjula, E-mail: manjula.physics@gmail.com; Sharma, Vimal [Department of Physics, NIT Hamirpur - 177005, HP (India); Pal, Hemant [Department of Physics, NIT Hamirpur - 177005, HP, India and Department of Physics, Govt. College Chamba - 176310, HP (India)

2014-04-24T23:59:59.000Z

326

High-resolution thermal-expansion measurements of tetrathiafulvalenetetracyanoquinodimethane (TTF-TCNQ)  

Science Journals Connector (OSTI)

An analysis of our measurements of the b-axis expansivity ?b of tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) within the Debye approximation suggests an unexpectedly high effective Debye temperature (?b=200±30 K) and a large anharmonicity (?=5±1.5) for the low-lying b-axis polarized acoustic phonons. These values for ? and ?b indicate substantial softening of the lattice above 100 K and also suggest an expansivity contribution from intramolecular vibrational modes. No anomalous length changes were observed in the region of the metal-semiconductor transition (45-65 K) to within ?LbLb?3×10-5.

D. E. Schafer; G. A. Thomas; F. Wudl

1975-12-15T23:59:59.000Z

327

Dirty, Skewed, and Backwards: The Smectic A-C Phase Transition in Aerogel  

Science Journals Connector (OSTI)

We study the smectic A-C transition in anisotropic and uniaxial disordered environments, e.g., uniaxially stretched aerogel. We find very strange behavior of translational correlations: the low-temperature, lower-symmetry smectic C phase is less translationally ordered than the high-temperature, higher-symmetry smectic A phase, with short ranged and algebraic translational correlations, respectively. Specifically, the A and C phases belong to the quasi-long-ranged translationally ordered “XY Bragg glass” and short ranged translationally ordered “m=1 Bragg glass” phase, respectively. The A-C phase transition itself belongs to a new universality class, whose fixed points and exponents we find in a d=5-? expansion.

Leiming Chen and John Toner

2005-04-08T23:59:59.000Z

328

High-energy asymptotic expansion of the Green function for one-dimensional Fokker-Planck and Schrödinger equations  

E-Print Network [OSTI]

A new formalism is presented for high-energy analysis of the Green function for Fokker-Planck and Schr\\"odinger equations in one dimension. Formulas for the asymptotic expansion in powers of the inverse wave number are derived, and conditions for the validity of the expansion are studied through the analysis of the remainder term. The short-time expansion of the Green function is also discussed.

Toru Miyazawa

2011-12-26T23:59:59.000Z

329

Expansion of the Two-Particle Scattering Amplitude in Terms of the Matrix Elements of the Lorentz Group  

Science Journals Connector (OSTI)

Starting from a dispersion relation, the scattering amplitude for two spinless particles is expanded in terms of the matrix elements of the unitary representations of the Lorentz group. The expansion consists of two parts: a background term and a series of pole terms. It is shown that this expansion leads to Regge-like behavior at large momentum transfers, and that each pole term and the background term in this expansion have the correct analytic structure in the momentum-transfer plane.

M. H. Rubin

1967-10-25T23:59:59.000Z

330

High Temperature Expansion Due to Compression Test for the Determination of a Cladding Material Failure Criterion under RIA Loading Conditions  

SciTech Connect (OSTI)

This paper is mainly dedicated to the development of an out-of-pile test reproducing the thermo-mechanical loading conditions encountered during the first stage of a Reactivity Initiated Accidents (RIA) transient, dominated by Pellet Clad Mechanical Interaction (PCMI). In particular, the strain-controlled clad loading under high strain rate associated with temperatures up to 600 deg. C expected during the PCMI phase is simulated by an Expansion Due to Compression (EDC) test achievable at high temperature. The use of appropriate materials for the inner pellet made it possible to achieve the tests from 20 deg. C up to 900 deg. C. The interpretation of the test data is supported by Finite Element Analysis (FEA) including parameters tuned using an inverse method coupling FEA and tests results. A deformation model, identified upon the PROMETRA (Transient Mechanical Properties) experimental database and describing the anisotropic viscoplastic behavior of Cold-Worked Stress Relieved Zircaloy-4 cladding alloys under typical RIA loading conditions, is exploited. The combined analysis of experimental results and finite element simulations provides a deeper understanding of the deformation mode (near pure hoop tension) that arises during the tests. The failure mode appears to be representative of that obtained on tubes during the PCMI stage of RIA experiments. An appropriate device is currently developed in order to reach a bi-axiality of the loading path closer to that expected during the PCMI stage (between plane-strain and equal-biaxial tension). (authors)

Le Saux, M.; Poussard, C.; Averty, X.; Sainte Catherine, C.; Carassou, S. [CEA-Saclay, DEN/DMN/SEMI, 91191 Gif-Sur-Yvette (France); Besson, J. [Centre des Materiaux, Mines Paris, CNRS UMR 7633, BP 87, 91003 Evry (France)

2007-07-01T23:59:59.000Z

331

Phasing tiny crystals  

Science Journals Connector (OSTI)

For tiny crystals, their diffraction intensities at and between the Bragg peaks become measurable due to the limited number of the unit cells, which can in principle be used to directly phase the crystal structures.

Miao, J.

2013-12-31T23:59:59.000Z

332

Sliding Luttinger liquid phases  

Science Journals Connector (OSTI)

We study systems of coupled spin-gapped and gapless Luttinger liquids. First, we establish the existence of a sliding Luttinger liquid phase for a system of weakly coupled parallel quantum wires, with and without disorder. It is shown that the coupling can stabilize a Luttinger liquid phase in the presence of disorder. We then extend our analysis to a system of crossed Luttinger liquids and establish the stability of a non-Fermi-liquid state: the crossed sliding Luttinger liquid phase. In this phase the system exhibits a finite-temperature, long-wavelength, isotropic electric conductivity that diverges as a power law in temperature T as T?0. This two-dimensional system has many properties of a true isotropic Luttinger liquid, though at zero temperature it becomes anisotropic. An extension of this model to a three-dimensional stack exhibits a much higher in-plane conductivity than the conductivity in a perpendicular direction.

Ranjan Mukhopadhyay; C. L. Kane; T. C. Lubensky

2001-07-09T23:59:59.000Z

333

Final Report: AST-0613577 "Experimental study of magnetic bubble expansion as a model for extragalactic radio lobes"  

SciTech Connect (OSTI)

Final report for project "Experimental study of magnetic bubble expansion as a model for extragalactic radio lobes" supported by NSF/DOE Joint Program in Basic Plasma Science.

Lynn, Alan [University of New Mexico

2011-02-18T23:59:59.000Z

334

A framework to improve enterprise-wide implementations : the case of the Veterans Health Administration Telehealth Expansion  

E-Print Network [OSTI]

This research applies an implementation framework derived from enterprise systems thinking to the Veterans Health Administration (VHA) Telehealth Expansion in order to characterize and evaluate the implementation methods ...

Andren, Julie C

2013-01-01T23:59:59.000Z

335

Expansion and Change on the U.S. Natural Gas Pipeline Network 2002  

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

Expansion and Change on the U.S. Natural Gas Pipeline Network 2002 Expansion and Change on the U.S. Natural Gas Pipeline Network 2002 EIA Home > Natural Gas > Natural Gas Analysis Publications Expansion and Change on the U.S. Natural Gas Pipeline Network 2002 Printer-Friendly Version Expansion and Change on the U.S. Natural Gas Pipeline Network - 2002 Text Box: This special report looks at the level of new capacity added to the national natural gas pipeline network in 2002 and the current capability of that network to transport supplies from production areas to U.S. markets. In addition, it examines the amount of additional capacity proposed for development during the next several years and to what degree various proposed projects will improve the deliverability of natural gas to key market areas. Questions or comments on the contents of this article should be directed to James Tobin at james.tobin@eia.doe.gov or (202) 586-4835. james.tobin@eia.doe.gov

336

Capricorn Ridge Expansion (1Q08) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Capricorn Ridge Expansion (1Q08) Wind Farm Capricorn Ridge Expansion (1Q08) Wind Farm Jump to: navigation, search Name Capricorn Ridge Expansion (1Q08) Wind Farm Facility Capricorn Ridge Expansion (1Q08) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Location TX Coordinates 31.838061°, -100.923965° 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":31.838061,"lon":-100.923965,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

337

The orifice expansion correction for a 50 mm line size at various diameter ratios  

SciTech Connect (OSTI)

The expansion coefficient or factor for a compressible flowmeter corrects for the change in pressure and density as the fluid is accelerated through the flowmeter. The expansion correction currently in use in the United States and also in other countries was developed over fifty years ago by Buckingham and Bean. More recent work reported by Kinghorn shows the equation currently in use to be in error. This paper describes the results of a test program to determine the expansion factors for flange-tapped sharp-edged orifices with diameter ratios between 0.242 and 0.726 in a nominal 50 mm (2 inch) line. Critical flow Venturis are used as the reference standards and dry air as the flowing fluid. The ratio of differential pressure to inlet static pressure is varied over a range of zero to about 0.2 at a constant Reynolds number. The expansion factor is determined form the apparent change in discharge coefficient at a constant Reynolds number.

Seidl, W. [Colorado Engineering Experiment Station, Inc., Nunn, CO (United States)

1995-12-31T23:59:59.000Z

338

Ising models for neural activity inferred via Selective Cluster Expansion: structural and coding  

E-Print Network [OSTI]

Ising models for neural activity inferred via Selective Cluster Expansion: structural and coding) of the entropy, a method for inferring an Ising model which describes the correlated activity of populations: statistical inference, neuronal networks #12;Ising models for neural activity inferred via Selective Cluster

Cocco, Simona

339

Ambient gas effects on the dynamics of laser-produced tin plume expansion  

E-Print Network [OSTI]

Ambient gas effects on the dynamics of laser-produced tin plume expansion S. S. Harilal,a Beau O in the development of an extreme ultraviolet lithographic light source. An ambient gas that is transparent to 13.5 nm and deceleration of plume species, the addition of ambient gas leads to other events such as double peak formation

Tillack, Mark

340

Bringing together linguistic and genetic evidence to test the Bantu expansion  

Science Journals Connector (OSTI)

...together linguistic and genetic evidence to test the Bantu expansion Cesare de Filippo 1...predictions of the two models and formally test these predictions with linguistic and genetic...those speaking other languages. (ii) We test the two most commonly cited models for...

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Water management with water conservation, infrastructure expansions, and source variability in Jordan  

E-Print Network [OSTI]

in Jordan David E. Rosenberg,1 Richard E. Howitt,2 and Jay R. Lund3 Received 12 September 2007; revised 10 in the Hashemite Kingdom of Jordan. It considers targeted installations of water-efficient appliances, leak expansions, and source variability in Jordan, Water Resour. Res., 44, W11402, doi:10.1029/2007WR006519. 1

Pasternack, Gregory B.

342

POLYGALACTURONASE INVOLVED IN EXPANSION1 Functions in Cell Elongation and Flower Development in Arabidopsis  

Science Journals Connector (OSTI)

...might act as downstream components of the regulatory networks that control cell expansion...each genotype) were recorded using a Plan Neofluar 10 0.3-numerical aperture...methylesterase and its proteinaceous inhibitor: a review. Carbohydr. Res. 345 : 2583-2595...

Chaowen Xiao; Chris Somerville; Charles T. Anderson

2014-03-28T23:59:59.000Z

343

Time Step Expansions and the Invariant Manifold Approach to Lattice Boltzmann  

E-Print Network [OSTI]

Time Step Expansions and the Invariant Manifold Approach to Lattice Boltzmann Models D.J. Packwood dynamics of a lattice Boltzmann system is to use a combination of different approximations and expan- sions, common to all lattice Boltzmann schemes, give rise to a slow invariant manifold. We perform a time step

Gorban, Alexander N.

344

Limitations of polynomial chaos expansions in the Bayesian solution of inverse problems  

E-Print Network [OSTI]

expensive, especially in high-dimensional problems. Polynomial chaos expansions (PCE) and generalized PCE,14,20,29]) which can be used to reduce the cost of Bayesian inverse problems [2,16­18,21]. The PCE leads), the surrogate posterior can be very different from the posterior and PCE-based sampling is either inaccurate

Chorin, Alexandre J.

345

Simulation of single acting natural gas Reciprocating Expansion Engine based on ideal gas model  

Science Journals Connector (OSTI)

Abstract The potential energy of high pressure gas destroyed in natural gas pressure reduction stations during pressure reduction when it passes through throttling valves. One way to recover this energy is to use a Reciprocating Expansion Engine coupled with a generator. The expansion engine is able to produce electricity as pressure decreases by recovering the potential energy. Although the expansion engine has been utilized in pressure reduction points for some time but it has not been analyzed for performance enhancement yet. In this work an advanced numerical simulation has been presented for the thermodynamic modeling of Natural Gas Single Acting Reciprocating Expansion Engine under various working conditions for high pressure ranges. The simulation has been carried out to understand the effects of various parameters and to improve performance of the engine. A range of geometric parameters such as suction diameter, piston diameter, crank radius, connecting rod length, speed were covered in this research. Because of the physical and numerical difficulties of the problem, the natural gas is assumed as an ideal gas.

Mahmood Farzaneh Gord; Mohsen Jannatabadi

2014-01-01T23:59:59.000Z

346

The Spatial Expansion and Ecological Footprint of Fisheries (1950 to Present)  

E-Print Network [OSTI]

/longitude ocean grid system and trace the change in their status over the 56-year time period. This result highlights the global scale expansion in marine fisheries, from the coastal waters off North Atlantic population of flatfish and other bottom fish they were targeting, and they had to move offshore, gradually

Pauly, Daniel

347

U.S. Biofuels Baseline and Impact of E-15 Expansion on Biofuel Markets  

E-Print Network [OSTI]

May 2012 U.S. Biofuels Baseline and Impact of E-15 Expansion on Biofuel Markets FAPRI-MU Report #02 for agricultural and biofuel markets.1 That baseline assumes current biofuel policy, including provisions credit expired, as scheduled, at the end of 2011. The additional tax credit for cellulosic biofuel

Noble, James S.

348

Photo-production of Positive Parity Excited Baryons in the 1/Nc Expansion of QCD  

E-Print Network [OSTI]

We analyze the photo-production helicity amplitudes for the positive parity excited baryons in the context of the $1/N_c$ expansion of QCD. The results show that sub-leading corrections in $1/N_c$ are important and that, while 1-body effective operators are dominant, there is some evidence for the need of 2-body effects.

Jose L. Goity Norberto N. Scoccola

2007-01-29T23:59:59.000Z

349

What lies between a free adiabatic expansion and a quasi-static one?  

E-Print Network [OSTI]

An expression is found that relates the initial and final volumes and temperatures for any adiabatic process. It is given in terms of a parameter r that smoothly interpolates between a free adiabatic expansion (r = 0) and a quasi-static one (r = 1). The parameter has to be evaluated numerically, but an approximate expression is given.

E. N. Miranda

2012-09-26T23:59:59.000Z

350

Fuzzy Rough Set Based Web Query Expansion Martine De Cock and Chris Cornelis  

E-Print Network [OSTI]

Fuzzy Rough Set Based Web Query Expansion Martine De Cock and Chris Cornelis Fuzziness, Krijgslaan 281 (S9), 9000 Gent, Belgium {Martine.DeCock, Chris.Cornelis}@UGent.be Abstract Fuzzy rough set on average -- we focus on query ex- pansion, i.e. the process of adding related terms to the query. Rough set

Gent, Universiteit

351

Mining Linguistic Cues for Query Expansion: Applications to Drug Interaction Search  

E-Print Network [OSTI]

Mining Linguistic Cues for Query Expansion: Applications to Drug Interaction Search Sheng Guo answers to this question, by mining the literature, are valuable for pharmaceuti- cal companies, both in designing combination therapies for complex diseases including cancers. We study this problem as one

Ramakrishnan, Naren

352

PABPN1 polyalanine tract deletion and long expansions modify its aggregation pattern and expression  

Science Journals Connector (OSTI)

Expansions of a (GCN)10/polyalanine tract in the Poly(A) Binding Protein Nuclear 1 (PABPN1) cause autosomal dominant oculopharyngeal muscular dystrophy (OPMD). In OPMD muscles, as in models, PABPN1 accumulates in intranuclear inclusions (INIs) whereas in other diseases caused by similar polyalanine expansions, the mutated proteins have been shown to abnormally accumulate in the cytoplasm. This study presents the impact on the subcellular localization of PABPN1 produced by large expansions or deletion of its polyalanine tract. Large tracts of more than 24 alanines result in the nuclear accumulation of PABPN1 in SFRS2-positive functional speckles and a significant decline in cell survival. These large expansions do not cause \\{INIs\\} formation nor do they lead to cytoplasmic accumulation. Deletion of the polyalanine tract induces the formation of aggregates that are located on either side and cross the nuclear membrane, highlighting the possible role of the N-terminal polyalanine tract in PABPN1 nucleo-cytoplasmic transport. We also show that even though five other proteins with polyalanine tracts tend to aggregate when over-expressed they do not co-aggregate with PABPN1 INIs. This study presents the first experimental evidence that there may be a relative loss of function in OPMD by decreasing the availability of PABPN1 through an INI-independent mechanism.

Arnaud F. Klein; Mitsuru Ebihara; Christine Alexander; Marie-Josée Dicaire; A. Marie-Josée Sasseville; Yves Langelier; Guy A. Rouleau; Bernard Brais

2008-01-01T23:59:59.000Z

353

Study on Alternative Refrigerants for Direct Expansion Solar Assisted Heat Pump System  

Science Journals Connector (OSTI)

This paper reports the investigation results of the possibilities for using pure and mixed refrigerants as working fluids to replace R22 for the DX-SAHP systems. Firstly, pure refrigerants are compared in terms of COP, discharge temperature and mass ... Keywords: direct expansion, heat pump, refrigerant, steady state, simulation

Hong Li

2012-05-01T23:59:59.000Z

354

Renormalized Energy and Asymptotic Expansion of Optimal Logarithmic Energy on the Sphere  

E-Print Network [OSTI]

satisfying some growth assumption and some properties detailed below. The discrete energy wn is linkedRenormalized Energy and Asymptotic Expansion of Optimal Logarithmic Energy on the Sphere Laurent B repelling points confined by an external field verifying the weak growth assumption of Hardy and Kuijlaars

Paris-Sud XI, Université de

355

Apparent violation of thermodynamics second law under Van der Waals gas expansion in vacuum  

E-Print Network [OSTI]

Examining textbooks of thermodynamics we have not able to find a proof of increasing of entropy under free adiabatic expansion in vacuum based on the state equation of the Van der Waals gas. This communication remedies the situation. During proving we faced with an amusing example of apparent violation of thermodynamics second law.

Yury A. Koksharov

2006-05-19T23:59:59.000Z

356

ADVANCES IN ATMOSPHERIC SCIENCES, VOL. 30, NO. 3, 2013, 790795 Poleward Expansion of the Hadley Circulation  

E-Print Network [OSTI]

ADVANCES IN ATMOSPHERIC SCIENCES, VOL. 30, NO. 3, 2013, 790­795 Poleward Expansion of the Hadley that the Hadley circulation has expanded poleward in recent decades. Important issues are what caused the widening of the Hadley circulation and whether the observed widening is related to anthropogenic forcing. In the present

Hu, Yongyun

357

Ocean oxygen minima expansions and their biological impacts Lothar Stramma a,, Sunke Schmidtko a,b  

E-Print Network [OSTI]

Ocean oxygen minima expansions and their biological impacts Lothar Stramma a,Ã?, Sunke Schmidtko a Keywords: Deoxygenation Oxygen minimum zones Ecosystem changes Hypoxia Tropical ocean Tropical Atlantic dissolved oxygen with global warming. In coastal regimes oxygen deficits represent acute ecosystem

Levin, Lisa

358

Simulated impact of urban expansion on future temperature heatwaves in Sydney  

E-Print Network [OSTI]

on 2-m temperature are investigated over Greater Sydney using the Weather Research and Forecasting (WRF the expected urban expansion in the future simulation according to local government urbanisation plans, are partly explained by the prevalent direction of winds that compensate or intensify the effect urbanisation

Evans, Jason

359

Coexistence of individual and social learners during range-expansion Joe Yuichiro Wakano  

E-Print Network [OSTI]

experienced rapid population growth and range expansion during "out-of-Africa." Here we model the spatial in regions where the population density is low. Due to this attenuation effect, the invasion speed of social essentially implies constant population size. Predictions from such "static" models may only be of partial

Wakano, Joe Yuichiro

360

Detecting acute myocardial infarction in the 12-lead ECG using Hermite expansions  

E-Print Network [OSTI]

Detecting acute myocardial infarction in the 12-lead ECG using Hermite expansions and neural-lead ECG, together with patient history and biochemical markers, are usually used at the emergency to rely on the 12-lead ECG together with patient history. The 12-lead ECG has the advantage of always

Lunds Universitet,

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Effects of compression and collective expansion on particle emission from central heavy-ion reactions  

SciTech Connect (OSTI)

Conditions under which compression occurs and collective expansion develops in energetic symmetric reactions of heavy nuclei are analyzed, together with their effects on emitted light baryons and pions. Within transport simulations, it is shown that shock fronts perpendicular to beam axis form in head-on reactions. The fronts separate hot compressed matter from normal matter and propagate into the projectile and target. As the impact parameter increases, the angle of inclination of the fronts relative to beam axis decreases, and in between the fronts a weak tangential discontinuity develops. Hot matter exposed to the vacuum in directions perpendicular to shock motion (and parallel to fronts) starts to expand sideways early within the reactions. Expansion in the direction of shock motion follows after the shocks propagate through nuclei, but due to the delay does not acquire the same strength. Expansion affects angular distributions, mean-energy components, shapes of spectra, and mean energies of different particles emitted into any one direction and further particle yields. Both the anisotropy in the expansion and a collective motion associated with the weak discontinuity affect the magnitude of sideward flow within the reaction plane. Differences in mean particle energy components in and out of the reaction plane in semicentral collisions depend sensitively on the relative magnitude of shock speed in normal matter and speed of sound in hot matter. The missing energy, considered in the past in association with low measured pion multiplicity in central reactions, may be identified with the energy of collective expansion. Relations are established which govern approximately the behavior of density and entropy in the compressed region in reactions with beam energy and impact parameter.

Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States))

1995-02-01T23:59:59.000Z

362

The SU(2) and SU(3) chiral phase transitions within chiral perturbation theory  

Science Journals Connector (OSTI)

The SU(2) and SU(3) chiral phase transitions in a gas made of pions, kaons, and etas are studied within the framework of chiral perturbation theory. We describe the temperature dependence of the quark condensates by using the meson meson scattering phase shifts in a second order virial expansion. In particular, the SU(3) formalism yields a somewhat lower melting temperature for the nonstrange condensates than within SU(2), and also predicts that the strange condensate melting is slower than that of the nonstrange, due to the different strange and nonstrange quark masses.

J. R. Peláez

2002-11-25T23:59:59.000Z

363

Evidence for a Cosmological Phase Transition on the TeVScale  

SciTech Connect (OSTI)

Examining the reverse evolution of the universe from the present, long before reaching Planck density dynamics one expects major modifications from the de-coherent thermal equations of state, suggesting a prior phase that has macroscopic coherence properties. The assumption that the phase transition occurs during the radiation dominated epoch, and that zero-point motions drive the fluctuations associated with this transition, specifies a class of cosmological models in which the cosmic microwave background fluctuation amplitude at last scattering is approximately 10{sup -5}. Quantum measurability constraints (e.g. uncertainly relations) define cosmological scales whose expansion rates can be at most luminal.

Lindesay, James V.; Noyes, H.Pierre; /SLAC

2005-08-23T23:59:59.000Z

364

Dynamics of plasma expansion and shockwave formation in femtosecond laser-ablated aluminum plumes in argon gas at atmospheric pressures  

E-Print Network [OSTI]

plasma expansion into a background gas at atmospheric pressure is cru- cial for many engineeringDynamics of plasma expansion and shockwave formation in femtosecond laser-ablated aluminum plumes in argon gas at atmospheric pressures Alexander Miloshevsky, Sivanandan S. Harilal, Gennady Miloshevsky

Harilal, S. S.

365

Large-scale cross-media retrieval of WikipediaMM images with textual and visual query expansion  

Science Journals Connector (OSTI)

In this paper, we present our approaches for the WikipediaMM task at ImageCLEF 2008. We first experimented with a text-based image retrieval approach with query expansion, where the extension terms were automatically selected from a knowledge base that ... Keywords: cross-media re-ranking, image retrieval, query-dependent visual concept detection, textual query expansion

Zhi Zhou; Yonghong Tian; Yuanning Li; Tiejun Huang; Wen Gao

2008-09-01T23:59:59.000Z

366

Viscosity near phase transitions  

E-Print Network [OSTI]

Probably the most enticing observation in theoretical physics during the last decade was the discovery of the great amount of consequences obtained from the AdS/CFT conjecture put forward by Maldacena. In this work we review how this correspondence can be used to address hydrodynamic properties such as the viscosity of some strongly interacting systems. We also employ the Boltzmann equation for those systems closer to low-energy QCD, and argue that this kind of transport coefficients can be related to phase transitions, in particular the QGP/hadronic phase transition studied in heavy ion collisions.

Antonio Dobado; Felipe J. Llanes-Estrada; Juan M. Torres-Rincon

2010-09-30T23:59:59.000Z

367

Linear phase compressive filter  

DOE Patents [OSTI]

A phase linear filter for soliton suppression is in the form of a laddered series of stages of non-commensurate low pass filters with each low pass filter having a series coupled inductance (L) and a reverse biased, voltage dependent varactor diode, to ground which acts as a variable capacitance (C). L and C values are set to levels which correspond to a linear or conventional phase linear filter. Inductance is mapped directly from that of an equivalent nonlinear transmission line and capacitance is mapped from the linear case using a large signal equivalent of a nonlinear transmission line.

McEwan, Thomas E. (Livermore, CA)

1995-01-01T23:59:59.000Z

368

Correlation between structure, phonon spectra, thermal expansion, and thermomechanics of single-layer MoS2  

Science Journals Connector (OSTI)

Using first-principles simulation, the correlation between structure, phonon spectra, thermal expansion, and thermomechanics of single-layer MoS2 is established. The laminar structure results in the low-dimension ZA mode with a parabolic dispersion and negative Grüneisen constants (?), while the nonorthogonal covalent Mo–S bonds (or intralayer thickness) result in the interatom and interdirection vibrational hybridizations, which tend to increase ?. There is a negative-positive crossover in thermal expansion coefficient at 20 K, because of the competition between the modes with negative and positive ?. Although the phononic activation at finite temperatures has a stiffening effect on the bulk modulus, the dominant effect from thermal expansion softens the lattice upon heating. The intralayer thickness results in the similarity between the thermal expansions of SL and bulk MoS2. Our numerical results explicitly support that the experimentally measured thermal shifts of the Raman modes are dominated by multiphonon scattering, but not thermal expansion.

Liang Feng Huang; Peng Lai Gong; Zhi Zeng

2014-07-15T23:59:59.000Z

369

Berry Phase Quantum Thermometer  

E-Print Network [OSTI]

We show how Berry phase can be used to construct an ultra-high precision quantum thermometer. An important advantage of our scheme is that there is no need for the thermometer to acquire thermal equilibrium with the sample. This reduces measurement times and avoids precision limitations.

Martin-Martinez, E; Mann, R B; Fuentes, I

2011-01-01T23:59:59.000Z

370

Berry Phase Quantum Thermometer  

E-Print Network [OSTI]

We show how Berry phase can be used to construct an ultra-high precision quantum thermometer. An important advantage of our scheme is that there is no need for the thermometer to acquire thermal equilibrium with the sample. This reduces measurement times and avoids precision limitations.

E. Martin-Martinez; A. Dragan; R. B. Mann; I. Fuentes

2013-05-28T23:59:59.000Z

371

Phase II Final Report  

SciTech Connect (OSTI)

The SkyTrough DSP will advance the state-of-the-art in parabolic troughs for utility applications, with a larger aperture, higher operating temperature, and lower cost. The goal of this project was to develop a parabolic trough collector that enables solar electricity generation in the 2020 marketplace for a 216MWe nameplate baseload power plant. This plant requires an LCOE of 9¢/kWhe, given a capacity factor of 75%, a fossil fuel limit of 15%, a fossil fuel cost of $6.75/MMBtu, $25.00/kWht thermal storage cost, and a domestic installation corresponding to Daggett, CA. The result of our optimization was a trough design of larger aperture and operating temperature than has been fielded in large, utility scale parabolic trough applications: 7.6m width x 150m SCA length (1,118m2 aperture), with four 90mm diameter × 4.7m receivers per mirror module and an operating temperature of 500°C. The results from physical modeling in the System Advisory Model indicate that, for a capacity factor of 75%: The LCOE will be 8.87¢/kWhe. SkyFuel examined the design of almost every parabolic trough component from a perspective of load and performance at aperture areas from 500 to 2,900m2. Aperture-dependent design was combined with fixed quotations for similar parts from the commercialized SkyTrough product, and established an installed cost of $130/m2 in 2020. This project was conducted in two phases. Phase I was a preliminary design, culminating in an optimum trough size and further improvement of an advanced polymeric reflective material. This phase was completed in October of 2011. Phase II has been the detailed engineering design and component testing, which culminated in the fabrication and testing of a single mirror module. Phase II is complete, and this document presents a summary of the comprehensive work.

Schuknecht, Nate [Project Manager; White, David [Principle Investigator; Hoste, Graeme [Research Engineer

2014-09-11T23:59:59.000Z

372

Envelope expansion with core collapse – III. Similarity isothermal shocks in a magnetofluid  

Science Journals Connector (OSTI)

......speed-density phase diagram for constructing semi-complete MHD shock solutions...Figure 9 The phase diagram of Class I similarity MHD shock solutions with...Figure 13 The phase diagram of Class II similarity MHD shock solutions with......

Cong Yu; Yu-Qing Lou; Fu-Yan Bian; Yan Wu

2006-07-21T23:59:59.000Z

373

Categorical Exclusion (CX) Determination Proposed Action: Expansion of O'Fallon Creek Substation Yard  

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

Expansion of O'Fallon Creek Substation Yard Expansion of O'Fallon Creek Substation Yard Description of Proposed Action: The Western Area Power Administration (Western) is proposing to expand the current yard to accommodate an additional bay for a dedicated electrical feed to a future oil pumping station that will be part of the Keystone XL project. Number and Title of Categorical Exclusions Being Applied: 10 CFR 10210410 Subpmi D, Appendix B, B4.11: Construction of electric power substations ... or modification of existing substations and support facilities. Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with the Regulatory Requirements for the National Environmental Policy Act at 10 CFR 1021AI0(b), require the following determinations be made in order for a proposed action to be categorically

374

FOA aimed at growing expansive database of Renewable Energy and Energy  

Open Energy Info (EERE)

FOA aimed at growing expansive database of Renewable Energy and Energy FOA aimed at growing expansive database of Renewable Energy and Energy Efficiency Incentives and Policies Home > Groups > Utility Rate Graham7781's picture Submitted by Graham7781(2002) Super contributor 12 December, 2012 - 11:30 DOE energy efficiency FOA funding opportunity Renewable Energy A new funding opportunity is available to anyone interested in helping develop a public database of federal, state, and local policies and incentives. These resources will be made available through state-of-the-art web and mobile interfaces, on-demand web services, and a downloadable data feed designed to reach a wide variety of stakeholders including energy professionals and end consumers. The Department of Energy is anticipating providing $1.5 million total to one Awardee over a period of up to three years to accomplish the goals of

375

Microsoft Word - CX-SnoKingSubstationExpansionFY12_WEB.doc  

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

Michael Marleau Michael Marleau Project Manager - TEP-TPP-1 Proposed Action: Sno-King Substation Expansion Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): Appendix B4.11 Electric power substations and interconnection facilities Location: Bothell, Snohomish County, WA Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to expand its Sno-King Substation's fenced electrical yard by approximately 0.2 acres to accommodate new equipment. The substation expansion is necessary to make room for the addition of a back-up 500/230-kV power transformer, which BPA can energize in the event of a primary transformer failure. The additional transformer will increase the safety and reliability of the system.

376

Aft-body loading function for penetrators based on the spherical cavity-expansion approximation.  

SciTech Connect (OSTI)

In this paper we develop an aft-body loading function for penetration simulations that is based on the spherical cavity-expansion approximation. This loading function assumes that there is a preexisting cavity of radius a{sub o} before the expansion occurs. This causes the radial stress on the cavity surface to be less than what is obtained if the cavity is opened from a zero initial radius. This in turn causes less resistance on the aft body as it penetrates the target which allows for greater rotation of the penetrator. Results from simulations are compared with experimental results for oblique penetration into a concrete target with an unconfined compressive strength of 23 MPa.

Longcope, Donald B., Jr.; Warren, Thomas Lynn; Duong, Henry

2009-12-01T23:59:59.000Z

377

Infrared nanosecond laser-metal ablation in atmosphere: Initial plasma during laser pulse and further expansion  

SciTech Connect (OSTI)

We have investigated the dynamics of the nanosecond laser ablated plasma within and after the laser pulse irradiation using fast photography. A 1064 nm, 15 ns laser beam was focused onto a target made from various materials with an energy density in the order of J/mm{sup 2} in atmosphere. The plasma dynamics during the nanosecond laser pulse were observed, which could be divided into three stages: fast expansion, division into the primary plasma and the front plasma, and stagnation. After the laser terminated, a critical moment when the primary plasma expansion transited from the shock model to the drag model was resolved, and this phenomenon could be understood in terms of interactions between the primary and the front plasmas.

Wu, Jian; Wei, Wenfu; Li, Xingwen; Jia, Shenli; Qiu, Aici [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China)] [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China)

2013-04-22T23:59:59.000Z

378

Representation of the Solar Capacity Value in the ReEDS Capacity Expansion Model: Preprint  

SciTech Connect (OSTI)

An important emerging issue is the estimation of renewables' contributions to reliably meeting system demand, or their capacity value. While the capacity value of thermal generation can be estimated easily, assessment of wind and solar requires a more nuanced approach due to resource variability. Reliability-based methods, particularly, effective load-carrying capacity (ELCC), are considered to be the most robust techniques for addressing this resource variability. The Regional Energy Deployment System (ReEDS) capacity expansion model and other long-term electricity capacity planning models require an approach to estimating CV for generalized PV and system configurations with low computational and data requirements. In this paper we validate treatment of solar photovoltaic (PV) capacity value by ReEDS capacity expansion model by comparing model results to literature for a range of energy penetration levels. Results from the ReEDS model are found to compare well with both comparisons--despite not being resolved at an hourly scale.

Sigrin, B.; Sullivan, P.; Ibanez, E.; Margolis, R.

2014-08-01T23:59:59.000Z

379

Capricious Cables: Understanding the Key Concepts in Transmission Expansion Planning and Its Models  

SciTech Connect (OSTI)

The extra-high-voltage transmission network is the bulk transport network of the electric power system. To understand how the future power system may react to planning decisions today, wide-area transmission models are increasingly used to aid decision makers and stakeholders. The goal of this work is to illuminate these models for a broader audience that may include policy makers or relative newcomers to the field of transmission planning. This paper explains the basic transmission expansion planning model formulation. It highlights six of the major simplifications made in transmission expansion planning models and the resulting need to contextualize model results using knowledge from other models and knowledge not captured in the modeling process.

Donohoo, P.; Milligan, M.

2014-06-01T23:59:59.000Z

380

Major PM expansion at Universal-Cyclops features new consolidation process  

SciTech Connect (OSTI)

A major expansion of powder-metallurgy facilities at Bridgeville, PA., has been recently announced by Universal-Cyclops Speciality Steel Div., Cyclops Corp. Production capacity for high-temperature alloys initially will be increased to two million pounds. Included in the planned project will be expansion of vacuum-induction melting (VIM), gas atomization, screening, blending, degassing, and handling capabilities. Air-atmosphere sintering furnaces will be installed to consolidate powder preforms by Universal-Cyclops' patented CAP (Consolidation by Atmospheric Pressure) process. Production from the new facility will serve the aircraft gas-turbine market. After chemical activation, the powder is placed in glass molds which are then evacuated and sealed. The filled molds are placed in a refractory container, surrounded by sand, and the entire assembly is heated in conventional air atmosphere electric or gas-fired furnace to temperatures over 2000/degree/F.

Not Available

1981-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Alternative nonlinear-optical expansion and diagrammatic approach: Nth-order dephasing-induced effects  

Science Journals Connector (OSTI)

We show that dephasing-induced nonlinear-optical effects whose amplitudes are proportional to trinomials of dephasing rates, ?ij+?jk-?ik, exist in all nonlinear orders of perturbation theory. To do this, we derive a new form for the perturbation expansion of the susceptibility, equivalent to the currently used expansion, but which writes each order as a sum of (1) terms due to single-sided diagrams, and (2) correction terms, all of which are proportional to trinomials of dephasing rates. The proof of this result utilizes a diagrammatic approach involving a new type of double-sided diagram for the latter terms. These diagrams immediately yield the terms proportional to trinomials of dephasing rates in all orders without the need for algebraic manipulation. This approach also reveals some general properties of the Nth-order susceptibility.

Rick Trebino

1988-09-15T23:59:59.000Z

382

Detonative Propagation and Accelerative Expansion of the Crab Nebula Shock Front  

Science Journals Connector (OSTI)

The accelerative expansion of the Crab Nebula’s outer envelope is a mystery in dynamics, as a conventional expanding blast wave decelerates when bumping into the surrounding interstellar medium. Here we show that the strong relativistic pulsar wind bumping into its surrounding nebula induces energy-generating processes and initiates a detonation wave that propagates outward to form the current outer edge, namely, the shock front, of the nebula. The resulting detonation wave, with a reactive downstream, then provides the needed power to maintain propagation of the shock front. Furthermore, relaxation of the curvature-induced reduction of the propagation velocity from the initial state of formation to the asymptotic, planar state of Chapman-Jouguet propagation explains the observed accelerative expansion. Potential richness in incorporating reactive fronts in the description of various astronomical phenomena is expected.

Yang Gao and Chung K. Law

2011-10-18T23:59:59.000Z

383

Direct-Expansion Air-Conditioning System Performance in Low Humidity Applications: A Case Study  

E-Print Network [OSTI]

DIRECT-EXPANSION AIR-CONDITIONING SYSTEM PERFORMANCE IN LOW HUMIDITY APPLICATIONS: A CASE STUDY MUKESH K. KHATTAR, P.E. DENNIS KEEBAUGH, P.E. Senior Systems Engineer Senior Research Engineer Florida Solar Energy Center Shenandoah Solar Center... warehouse. The flat gravel roof is exposed to sun. The 16' ceiling is insulated with two inch spray foam. Entrance to the warehouse is through sealed and insulated doors located on the west partition wall. The air -conditioning sys tem on this leased...

Khattar, M. K.; Keebaugh, D.

1987-01-01T23:59:59.000Z

384

An Interacting Dark Energy Model for the Expansion History of the Universe  

E-Print Network [OSTI]

We explore a model of interacting dark energy where the dark energy density is related by the holographic principle to the Hubble parameter, and the decay of the dark energy into matter occurs at a rate comparable to the current value of the Hubble parameter. We find this gives a good fit to the observational data supporting an accelerating Universe, and the model represents a possible alternative interpretation of the expansion history of the Universe.

Micheal S. Berger; Hamed Shojaei

2006-08-16T23:59:59.000Z

385

The curious case of large-N expansions on a (pseudo)sphere  

E-Print Network [OSTI]

We elucidate the large-N dynamics of one-dimensional sigma models with spherical and hyperbolic target spaces. We find a duality between the Lagrange multiplier and the angular momentum. We propose a new class of operators based on the irreducible representations of hyperbolic space. In the hyperbolic model we uncover unexpected zero modes which lead to the double scaling of the 1/N expansion. We explore these zero modes using Dikiy-Gelfand equations.

Polyakov, Alexander; Stokes, James

2014-01-01T23:59:59.000Z

386

Fast transitionless expansions of Gaussian anharmonic traps for cold atoms: bang-singular-bang control  

E-Print Network [OSTI]

Combining invariant-based inverse engineering, perturbation theory, and Optimal Control Theory, we design fast, transitionless expansions of cold neutral atoms or ions in Gaussian anharmonic traps. Bounding the possible trap frequencies and using a "bang-singular-bang" control we find fast processes for a continuum of durations up to a minimum time that corresponds to a purely bang-bang (stepwise frequency constant) control.

Xiao-Jing Lu; Xi Chen; J. Alonso; J. G. Muga

2014-01-07T23:59:59.000Z

387

Thermal Expansion Coefficients and the Primary and Secondary Pyroelectric Coefficients of Animal Bone  

Science Journals Connector (OSTI)

... observation of the displacement of mercury from a fused quartz dilatometer (see ref. 2, ASTM D864-52), and the linear thermal expansion coefficients in the axial direction with a ... coefficients in the axial direction with a linear variable differential transformer (see ref. 3, ASTM E228-66a). The temperature variation was restricted to 18-30 C to avoid shrinkage4 ...

SIDNEY B. LANG

1969-11-22T23:59:59.000Z

388

JOURNAL OF MATERIALS SCIENCE 23 (1988) 1976-1980 Drying shrinkage of expansive cements  

E-Print Network [OSTI]

of strength-contributing substances, and formation of potentially deleterious products such as ettringite-type expansive cement is ettringite (C6AS3H32)t. C4A3Sin Type K, CA and C12A7in Type M, and C3A in Type S, are the sources of reactive alumina required for the formation of ettringite. Type K is the most widely used

Mobasher, Barzin

389

Apparent lattice expansion in ordered nanoporous silica during capillary condensation of fluids  

Science Journals Connector (OSTI)

A Bragg peak shift suggests a pore lattice expansion in ordered nanoporous silica at the onset of capillary condensation of fluids. In depth analysis by a numerical and an analytical approach leads to the conclusion that this shift is due not to a mechanical deformation of the pore lattice but to a subtle interplay between the form factor and the structure factor from crystallites of finite size.

Prass, J.

2012-07-04T23:59:59.000Z

390

Capricorn Ridge Expansion (2Q08) Wind Farm | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Capricorn Ridge Expansion (2Q08) Wind Farm Jump to: navigation, search Name Capricorn Ridge Expansion (2Q08) Wind Farm Facility Capricorn Ridge Expansion (2Q08) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Location TX Coordinates 31.838061°, -100.923965° 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":31.838061,"lon":-100.923965,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

391

High-expansion foam for LNG vapor mitigation. Topical report, September 1987-December 1989  

SciTech Connect (OSTI)

One of the purposes of these high expansion foam systems is to reduce the extent of the hazardous vapor cloud generated during an accidental LNG release. Should the LNG ignite, these systems serve the additional function of controlling the LNG fire and minimizing its radiation to the surroundings. Foam generators have been installed along the tops of dike walls surrounding some LNG storage tanks, and around other fenced containment areas where LNG may be accidentally released, such as LNG pump pits and pipe rack trenches. To date there are no technically justifiable guidelines for the design and installation of these systems. Furthermore, there are no models that may be used describe the vapor source so as to be able to predict the reduction in the hazardous vapor cloud zone when high expansion foam is applied to an LNG spill. Information is essential not only for the optimal design of high expansion foam systems, but also for comparing the cost effectiveness of alternative LNG vapor mitigation measures.

Atallah, S.; Shah, J.N.; Peterlinz, M.E.

1990-05-01T23:59:59.000Z

392

Wholesale price rebate vs. capacity expansion: The optimal strategy for seasonal products in a supply chain  

Science Journals Connector (OSTI)

Abstract We consider a supply chain in which one manufacturer sells a seasonal product to the end market through a retailer. Faced with uncertain market demand and limited capacity, the manufacturer can maximize its profits by adopting one of two strategies, namely, wholesale price rebate or capacity expansion. In the former, the manufacturer provides the retailer with a discount for accepting early delivery in an earlier period. In the latter, the production capacity of the manufacturer in the second period can be raised so that production is delayed until in the period close to the selling season to avoid holding costs. Our research shows that the best strategy for the manufacturer is determined by three driving forces: the unit cost of holding inventory for the manufacturer, the unit cost of holding inventory for the retailer, and the unit cost of capacity expansion. When the single period capacity is low, adopting the capacity expansion strategy dominates as both parties can improve their profits compared to the wholesale price rebate strategy. When the single period capacity is high, on the other hand, the equilibrium outcome is the wholesale price rebate strategy.

Kwei-Long Huang; Chia-Wei Kuo; Ming-Lun Lu

2014-01-01T23:59:59.000Z

393

Exploration of Resource and Transmission Expansion Decisions in the Western Renewable Energy Zone Initiative  

SciTech Connect (OSTI)

The Western Renewable Energy Zone (WREZ) initiative brings together a diverse set of voices to develop data, tools, and a unique forum for coordinating transmission expansion in the Western Interconnection. In this paper we use a new tool developed in the WREZ initiative to evaluate possible renewable resource selection and transmission expansion decisions. We evaluate these decisions under a number of alternative future scenarios centered on meeting 33percent of the annual load in the Western Interconnection with new renewable resources located within WREZ-identified resource hubs. Our analysis finds that wind energy is the largest source of renewable energy procured to meet the 33percent RE target across nearly all scenarios analyzed (38-65percent). Solar energy is almost always the second largest source (14-41percent). We find several load zones where wind energy is the least cost resource under a wide range of sensitivity scenarios. Load zones in the Southwest, on the other hand, are found to switch between wind and solar, and therefore to vary transmission expansion decisions, depending on uncertainties and policies that affect the relative economics of each renewable option. Further, we find that even with total transmission expenditures of $17-34 billion these costs still represent just 10-19percent of the total delivered cost of renewable energy.

Mills, Andrew D.; Phadke, Amol A.; Wiser, Ryan H.

2010-06-10T23:59:59.000Z

394

Exploration of resource and transmission expansion decisions in the Western Renewable Energy Zone initiative  

Science Journals Connector (OSTI)

The Western Renewable Energy Zone (WREZ) initiative brings together a diverse set of voices to develop data, tools, and a unique forum for coordinating transmission expansion in the Western Interconnection. In this paper we use a new tool developed in the WREZ initiative to evaluate possible renewable resource selection and transmission expansion decisions. We evaluate these decisions under a number of alternative future scenarios centered on meeting 33% of the annual load in the Western Interconnection with new renewable resources located within WREZ-identified resource hubs. Our analysis finds that wind energy is the largest source of renewable energy procured to meet the 33% RE target across nearly all scenarios analyzed (38–65%). Solar energy is almost always the second largest source (14–41%). We find several load zones where wind energy is the least cost resource under a wide range of sensitivity scenarios. Load zones in the Southwest, on the other hand, are found to switch between wind and solar, and therefore to vary transmission expansion decisions, depending on uncertainties and policies that affect the relative economics of each renewable option. Further, we find that even with total transmission expenditures of $17–34 billion these costs still represent just 10–19% of the total delivered cost of renewable energy.

Andrew Mills; Amol Phadke; Ryan Wiser

2011-01-01T23:59:59.000Z

395

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

396

Energy performance of direct expansion air handling unit in office buildings  

Science Journals Connector (OSTI)

Abstract Buildings and their occupants generate a large amount of carbon emissions. In Korea, buildings contribute to about 30% of the total greenhouse gases emissions, and the proportion has been rapidly increasing to the level of the developed counties (i.e., more than 40% of the total emissions. A direct expansion air handling unit, of which a refrigerant is directly delivered to the heating and cooling, has a potential to save cooling and heating energy use, compared to water-based central air conditioning systems. The aim of this study is to compare heating and cooling energy uses of an identical office building but with different air conditioning systems, i.e. direct expansion and water-based air conditioning systems. Dynamic building energy simulations that reflect the actual use of a monitored building and its air handling unit operation have been conducted in this study. Simulation results show good agreement with the actual energy consumption obtained from the field measurements of the building. Our study quantifies the amount of cooling and heating energy uses saved by a direct expansion air handing unit and reveals reasons for this savings, i.e. higher energy efficiency of the unit and reduction in pump and fan energy demands.

Geun Young Yun; Jongdae Choi; Jeong Tai Kim

2014-01-01T23:59:59.000Z

397

Models for mean bonding length, melting point and lattice thermal expansion of nanoparticle materials  

SciTech Connect (OSTI)

Graphical abstract: Three models are derived to explain the nanoparticles size dependence of mean bonding length, melting temperature and lattice thermal expansion applied on Sn, Si and Au. The following figures are shown as an example for Sn nanoparticles indicates hilly applicable models for nanoparticles radius larger than 3 nm. Highlights: ? A model for a size dependent mean bonding length is derived. ? The size dependent melting point of nanoparticles is modified. ? The bulk model for lattice thermal expansion is successfully used on nanoparticles. -- Abstract: A model, based on the ratio number of surface atoms to that of its internal, is derived to calculate the size dependence of lattice volume of nanoscaled materials. The model is applied to Si, Sn and Au nanoparticles. For Si, that the lattice volume is increases from 20 ?{sup 3} for bulk to 57 ?{sup 3} for a 2 nm size nanocrystals. A model, for calculating melting point of nanoscaled materials, is modified by considering the effect of lattice volume. A good approach of calculating size-dependent melting point begins from the bulk state down to about 2 nm diameter nanoparticle. Both values of lattice volume and melting point obtained for nanosized materials are used to calculate lattice thermal expansion by using a formula applicable for tetrahedral semiconductors. Results for Si, change from 3.7 × 10{sup ?6} K{sup ?1} for a bulk crystal down to a minimum value of 0.1 × 10{sup ?6} K{sup ?1} for a 6 nm diameter nanoparticle.

Omar, M.S., E-mail: dr_m_s_omar@yahoo.com [Department of Physics, College of Science, University of Salahaddin-Erbil, Arbil, Kurdistan (Iraq)

2012-11-15T23:59:59.000Z

398

Theory and numerical modeling of the accelerated expansion of laser-ablated materials near a solid surface  

Science Journals Connector (OSTI)

A self-similar theory and numerical hydrodynamic modeling is developed to investigate the effects of dynamic source and partial ionization on the acceleration of the unsteady expansion of laser-ablated material near a solid target surface. The dynamic source effect accelerates the expansion in the direction perpendicular to the target surface, while the dynamic partial ionization effect accelerates the expansion in all directions. The vaporized material during laser ablation provides a nonadiabatic dynamic source at the target surface into the unsteady expanding fluid. For studying the dynamic source effect, the self-similar theory begins with an assumed profile of plume velocity, u=v/vm=?+(1-?)?, where vm is the maximum expansion velocity, ? is a constant, and ?=x/vmt. The resultant profiles of plume density and plume temperature are derived. The relations obtained from the conservations of mass, momentum, and energy, respectively, all show that the maximum expansion velocity is inversely proportional to ?, where 1-? is the slope of plume velocity profile. The numerical hydrodynamic simulation is performed with the Rusanov method and the Newton Raphson method. The profiles and scalings obtained from numerical hydrodynamic modeling are in good agreement with the theory. The dynamic partial ionization requires ionization energy from the heat at the expansion front, and thus reduces the increase of front temperature. The reduction of thermal motion would increase the flow velocity to conserve the momentum. This dynamic partial ionization effect is studied with the numerical hydrodynamic simulation including the Saha equation. With these effects, ? is reduced from its value of conventional free expansion. This reduction on ? increases the flow velocity slope, decreases the flow velocity near the surface, and reduces the thermal motion of plume, such that the maximum expansion velocity is significantly increased over that found from conventional models. The result may provide an explanation for experimental observations of high-expansion front velocities even at low-laser fluence.

K. R. Chen; T. C. King; J. H. Hes; J. N. Leboeuf; D. B. Geohegan; R. F. Wood; A. A. Puretzky; J. M. Donato

1999-09-15T23:59:59.000Z

399

Pro le-Guided Automatic Inline Expansion for C Programs Pohua P. Chang, Scott A. Mahlke, William Y. Chen and Wen-mei W. Hwu  

E-Print Network [OSTI]

Pro le-Guided Automatic Inline Expansion for C Programs Pohua P. Chang, Scott A. Mahlke, William Y study, Allen and Johnson identi ed inline expansion as an essential part of a vectorizing C compiler 5

Hwu, Wen-mei W.

400

The synthesis and characterization of an expansive admixture for M-type cements I. The influence of free CaO to the formation of ettringite  

Science Journals Connector (OSTI)

The hydration process of expansive admixtures for M-type of expansive or shrinkage compensation cements was studied by thermal analysis supplemented by infrared spectroscopy and X-ray diffraction. The main attent...

TomᚠOpravil; Petr Ptá?ek; František Šoukal…

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

NETL: Carbon Storage - Regional Partnership Validation Phase (Phase II)  

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

Validation Phase (Phase II) Projects Validation Phase (Phase II) Projects The Regional Carbon Sequestration Partnerships' (RCSP) Validation Phase focuses on validating the most promising regional opportunities to deploy CCS technologies by building upon the accomplishments of the Characterization Phase. Two different CO2 storage approaches are being pursued in this phase: geologic and terrestrial carbon storage. The Validation Phase includes 20 geologic and 11 terrestrial CO2 storage projects. Efforts are being conducted to: Validate and refine current reservoir simulations for CO2 storage projects. Collect physical data to confirm CO2 storage potential and injectivity estimates. Demonstrate the effectiveness of monitoring, verification, and accounting (MVA) technologies. Develop guidelines for well completion, operations, and abandonment.

402

Load expansion of naphtha multiple premixed compression ignition (MPCI) and comparison with partially premixed compression ignition (PPCI) and conventional diesel combustion (CDC)  

Science Journals Connector (OSTI)

Abstract In previous studies, multiple premixed compression ignition (MPCI) has been proposed as a novel combustion concept in gasoline compression ignition engines which has great potential to achieve high thermal efficiency and low emissions simultaneously. MPCI mode was realized by a sequence of “spray–combustion–spray–combustion” around the compression top dead center (TDC). This study is aimed for the high load expansion of naphtha MPCI. In addition, the study investigated advantages and disadvantages of MPCI compared with partially premixed compression ignition (PPCI) and conventional diesel combustion (CDC). Engine operating range successfully reached indicated mean effective pressure (IMEP) of 1.4 MPa with high thermal efficiency, low emissions and acceptable combustion noise by the optimization of the injection parameters and the intake management. For MPCI, earlier combustion phasing was possible even at the high load operation compared with PPCI and CDC. This was attributed to the separated heat release characteristics and pressure rise rate process. The divided pressure rise rate process caused considerably low maximum pressure rise rate (MPRR) characteristics such as 0.8 MPa/deg at IMEP 1.4 MPa condition. The earlier combustion phasing led to the higher thermal efficiency characteristics of MPCI combustion compared with PPCI and CDC. This was attributed to the lower exhaust heat loss characteristics. However, high level of hydrocarbon (HC) and carbon monoxide (CO) emissions with low combustion stability at the low load operation were considered as severe challenges to overcome.

Kihyun Kim; Zhi Wang; Buyu Wang; Shijin Shuai; Hongqiang Yang; Choongsik Bae

2014-01-01T23:59:59.000Z

403

Effects of refrigerant charge and structural parameters on the performance of a direct-expansion solar-assisted heat pump system  

Science Journals Connector (OSTI)

Abstract The direct-expansion solar-assisted heat pump (DX-SAHP) is widely studied as a refrigeration system, which can supply hot water for domestic use during the whole year. The system refrigerant charge and structure parameters are believed to have a great effect on the cycling thermal performance. The refrigerant mass charge including two-phase and single-phase in heat exchangers and pipes is calculated with distributed and lumped parameter approach mathematical models, respectively. Based on the system simulation program, the refrigerant distribution characteristics and system performance under varied structural parameters are obtained. The mathematical calculation results show that the 70%–80% refrigerant charge exists in the condenser and collector; the optimum refrigerant charge, solar collector area, condenser pipe length and condenser internal diameter for the system are 1.65–1.75 kg, 6.0 m2, 70 m and 9 mm, respectively. In the optimum parameters, the better system performance and feasible cost can be achieved.

D. Zhang; Q.B. Wu; J.P. Li; X.Q. Kong

2014-01-01T23:59:59.000Z

404

Microcellular foams via phase separation  

SciTech Connect (OSTI)

A study of wide variety of processes for making plastic foams shows that phase separation processes for polymers from solutions offers the most viable methods for obtaining rigid plastic foams which met the physical requirements for fusion target designs. Four general phase separation methods have been shown to give polymer foams with densities less than 0.1 g/cm/sup 3/ and cell sizes of 30..mu..m or less. These methods involve the utilization of non-solvent, chemical or thermal cooling processes to achieve a controlled phase separation wherein either two distinct phases are obtained where the polymer phase is a continuous phase or two bicontinuous phases are obtained where both the polymer and solvent are interpenetrating, continuous, labyrinthine phases. Subsequent removal of the solvent gives the final foam structure.

Young, A.T.

1985-01-01T23:59:59.000Z

405

Derivation of a three-dimensional phase-field-crystal model for liquid crystals from density functional theory  

E-Print Network [OSTI]

Using a generalized order parameter gradient expansion within density functional theory, we derive a phase-field-crystal model for liquid crystals composed by apolar particles in three spatial dimensions. Both the translational density and the orientational direction and ordering are included as order parameters. Different terms involving gradients in the order parameters in the resulting free energy functional are compared to the macroscopic Ginzburg-Landau approach as well as to the hydrodynamic description for liquid crystals. Our approach provides microscopic expressions for all prefactors in terms of the particle interactions. Our phase-field-crystal model generalizes the conventional phase-field-crystal model of spherical particles to orientational degrees of freedom and can be used as a starting point to explore phase transitions and interfaces for various liquid-crystalline phases.

Raphael Wittkowski; Hartmut Löwen; Helmut R. Brand

2010-07-09T23:59:59.000Z

406

Phase 1 -- 2  

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

2 2 Revised 8/7/02 " "Sample Statement of Work - Standard Service Offerings for Contractor-Identified Project" "Task #","Task Title","Work Scope","Deliverable","Agency Requirements" " " "Phase Two - Initial Project Development" "2-1","DO RFP Development - Direct Support","Based upon interviews Agency/site staff and consultation support, FEMP Services will prepare DO RFP for Agency/site. FEMP Services will provide onsite or telecon review of draft DO RFP with agency staff. FEMP Services will prepare 2nd draft DO RFP based on telecon and written agency review comments and recommendations. ","Draft DO RFP Document. On-site review of draft DO RFP.

407

Neutron phase echo  

Science Journals Connector (OSTI)

The coherent overlap of the waves traversing the two legs of a perfect-crystal neutron interferometer is altered by a material with a neutron-nuclear optical potential. The fringe visibility is limited by the longitudinal coherence length. The loss of interference contrast caused by a slab of material of positive optical potential can be restored by placing another slab of material with a negative optical potential in the same leg of the interferometer. This paper describes the observation and detailed characterization of this quantum-mechanical phenomenon, which we call the phase-echo effect.

R. Clothier; H. Kaiser; S. A. Werner; H. Rauch; H. Wölwitsch

1991-11-01T23:59:59.000Z

408

Phase 1 --2  

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

2 2 Rev 4-01-05 " "Statement of Work - Standard Service Offerings for Contractor-Identified Project at (insert project site)" "Task #","Task Title","Work Scope","Deliverable","Agency Requirements" " " "Phase Two - Initial Project Development" "2-1","DO RFP Development - Direct Support","Based upon interviews Agency/site staff and consultation support, FEMP Services will prepare DO RFP for Agency/site. FEMP Services will provide onsite or telecon review of draft DO RFP with agency staff. FEMP Services will prepare 2nd draft DO RFP based on telecon and written agency review comments and recommendations. ","Draft DO RFP Document. On-site review of draft DO RFP.

409

Numerical Study on the Operating Performance of an Indirect Expansion Solar Assisted Multifunctional Heat Pump in Water Heating Mode  

Science Journals Connector (OSTI)

An indirect expansion solar assisted multifunctional heat pump (IE-SAMHP) is ... SAMHP consists of an all-glass evacuated-tube solar collector system, a compressor, two air-...

Ji Jie; Jiang Aiguo; Yang Jichun; Pei Gang…

2009-01-01T23:59:59.000Z

410

Dynamic Performance Study on the Solar Collector/Evaporator of Direct Expansion Solar Assisted Heat Pump Systems  

Science Journals Connector (OSTI)

A dynamic simulation model is developed for predicting performance of the solar collector/evaporator of direct expansion solar assisted heat pump systems. In this model, ... meteorological and configuration param...

Li Hong; Yang Hongxing

2009-01-01T23:59:59.000Z

411

Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC- FE Dkt. No. 11-161-LNG  

Broader source: Energy.gov [DOE]

On November 15, 2013, the Office of Fossil Energy of the Department of Energy (DOE/FE) issued Order No. 3357 (FLEX II Conditional Order) to Freeport LNG Expansion, L.P., FLNG Liquefaction, LLC,...

412

Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC- FE Dkt. No. 10-161-LNG  

Broader source: Energy.gov [DOE]

On May 17, 2013, the Office of Fossil Energy of the Department of Energy (DOE/FE) issued Order No. 3282 (FLEX I Conditional Order) to Freeport LNG Expansion, L.P. and FLNG Liquefaction, LLC,...

413

Property:Project Phase | Open Energy Information  

Open Energy Info (EERE)

Phase Phase Jump to: navigation, search Property Name Project Phase Property Type Text This is a property of type String. Pages using the property "Project Phase" Showing 25 pages using this property. (previous 25) (next 25) M MHK Projects/40MW Lewis project + Phase 2 + MHK Projects/ADM 3 + Phase ? + MHK Projects/ADM 4 + Phase ? + MHK Projects/ADM 5 + Phase 2 + MHK Projects/AW Energy EMEC + Phase 3 + MHK Projects/AWS II + Phase 1 + MHK Projects/Admirality Inlet Tidal Energy Project + Phase 1 + MHK Projects/Agucadoura + Phase 3 + MHK Projects/Alaska 1 + Phase 0 + MHK Projects/Alaska 13 + Phase ? + MHK Projects/Alaska 17 + Phase 0 + MHK Projects/Alaska 18 + Phase 0 + MHK Projects/Alaska 24 + Phase 0 + MHK Projects/Alaska 25 + Phase 0 + MHK Projects/Alaska 28 + Phase 0 +

414

Phase 1 -- 4  

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

4" 4" "Statement of Work - Optional Service Offerings for Contractor-Identified Project" "Task #","Task Title","Work Scope","Deliverable","Agency Requirements" " " "Phase Two - Initial Project Development" "Replace Std Task# 2-1","DO RFP Development - On Site Consultation","FEMP Services will provide technical consultation resources at the Agency's site to assist in the integration of the site's requirements into the DO RFP template.","Oral Comments","Agency staff will draft DO RFP. Provide copies to FEMP Services staff for review." "Phase Three - Negotiations and Award" "Replace Std Task# 3-4","Final Proposal Review - Direct Support","FEMP Services will provide direct technical resources to review final proposal. Review will include assessment of ESPC-unique data such as markups, performance period expenses, and financing interest rates. FEMP Services will assure that price schedules have been filled out correctly. ESCO specified equipment will be evaluated for its appropriateness and installation expense (labor and material). FEMP Services will coordinate and assemble agency and FEMP Services questions and issues for Agency CO to be presented to ESCO for discussions and negotiations. ","Telecon Advice and Written comments and recommendations","Agency will provide FEMP Services staff copies of final proposal with emphasis on selected equipment compatibility with agency performance requirements. Agency shall ensure applicable acquisition team members review final proposal. Agency will generate site questions or issues prior to scheduled telecons with FEMP Services staff. Agency will review questions and issues for ESCO discussions. Agency CO will submit questions and issues to ESCO."

415

Large-Z Expansion Theory for the Ground State of a One-Electron Ion Perturbed by rN  

Science Journals Connector (OSTI)

Large-Z (nuclear charge) expansion theory is applied to the nonrelativistic ground state of a one-electron ion which is perturbed by a repulsive central field potential which goes as the Nth power of the radial distance of the electron from the nucleus where N is an integer (N=-1; N?1). The energy-expansion parameters for these problems are determined self-consistently within the asymptotic method itself. General recursive relations for the wave-function expansion coefficients in the basic asymptotic expansion and the stretched solution are obtained. For the case of N=1, the wave function and the energy expansion are obtained explicitly through third order. For N=-1, the basic asymptotic solution is the exact solution. For r large, a few terms of the conventional large-Z perturbation-theory expansion for the N=-1 case give an inaccurate representation for the exact wave function. The relative error associated with first-order perturbation-theory expectation-value results is shown to increase as the operator probes the outer part of the atom to a greater extent.

Lawrence B. Mendelsohn

1967-08-05T23:59:59.000Z

416

Swellings due to alkali-silica reaction and delayed ettringite formation: Characterisation of expansion isotropy and effect of moisture conditions  

Science Journals Connector (OSTI)

This paper investigates the effect of different conditions on the development of concrete expansions due to alkali-silica reaction (ASR), delayed ettringite formation (DEF) and their combination. The presence of products of the two reactions has been observed during structure diagnosis. The aim of this research is to study the two reactions in concretes with close mix designs but with various types of aggregate and moisture conditions. Measurements performed in the three directions of stress-free specimens showed that DEF expansions could be considered as isotropic for stress-free material. DEF expansions were largely influenced by the storage conditions (immersed in water or in sealed conditions). The volume of storage water modified the kinetics. Under sealed conditions, no expansions were measured for mortar containing non-reactive aggregate, while small positive strains were obtained for mortar containing reactive aggregate. In all cases, new water supply caused fast, large expansions. The different effects of alkali leaching and moisture conditions on DEF and ASR expansions are discussed.

Hassina Bouzabata; Stéphane Multon; Alain Sellier; Hacène Houari

2012-01-01T23:59:59.000Z

417

3 - Thermodynamics and Phase Diagrams  

Science Journals Connector (OSTI)

Abstract Many types of phase diagram sections involving temperature, composition, pressure, chemical potentials, partial pressures, volume and enthalpy as axis variables or constants are described for binary, ternary and multicomponent systems. The theme is the relationship between thermodynamics and phase diagrams. A review of the fundamentals of thermodynamics as required for the interpretation and calculation of phase diagrams is presented. One set of general geometrical rules which governs all types of single-valued phase diagram sections is derived. The computer calculation of phase diagrams from large critically assessed databases of model parameters is discussed.

Arthur D. Pelton

2014-01-01T23:59:59.000Z

418

Draft Environmental Impact Statement for the Site Selection for the Expansion of the Strategic Petroleum Reserve  

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

1 1 Summary and Chapters 1 - 7 May 2006 Draft Environmental Impact Statement for Site Selection for the Expansion of the Strategic Petroleum Reserve Document No. DOE/EIS-0385 Responsible Federal Agency: U.S. Department of Energy (DOE), Office of Petroleum Reserves Location: Potential new SPR storage sites are located in Lafourche Parish, Louisiana; Perry and Claiborne Counties, Mississippi; and Brazoria County, Texas. Existing Strategic Petroleum Reserve (SPR) storage sites that could be expanded are located in Cameron, Calcasieu, and Iberville Parishes, Louisiana; and Jefferson County, Texas. Associated pipelines, marine terminals, and other facilities that might be developed are located in East Baton Rouge, East Feliciana, St. James, Terrebonne, West Baton

419

An Improved ((G'/G))-expansion Method for Solving Nonlinear PDEs in Mathematical Physics  

SciTech Connect (OSTI)

In the present article, we construct the traveling wave solutions of the (1+1)-dimensional coupled Hirota-Satsuma-KdV equations and the (1+1)-dimensional variant coupled Boussinesq system of equations by using an improved ((G'/G))-expansion method, where G satisfies the second order linear ordinary differential equation. As a result, hyperbolic, trigonometric and rational function solutions with parameters are obtained. It is shown that the proposed method is direct, effective and can be used for many other nonlinear evolution equations in mathematical physics.

Zayed, Elsayed M. E.; Al-Joudi, Shorog [Mathematics Department, Faculty of Science, Zagazig University, Zagazig (Egypt) and Mathematics Department, Faculty of Science, Taif University, P.O.Box 888, El-Taif (Saudi Arabia)

2010-09-30T23:59:59.000Z

420

Large-order shifted 1/N expansions through the asymptotic iteration method  

E-Print Network [OSTI]

The perturbation technique within the framework of the asymptotic iteration method is used to obtain large-order shifted 1/N expansions, where N is the number of spatial dimensions. This method is contrary to the usual Rayleigh-Schr\\"{o}dinger perturbation theory, no matrix elements need to be calculated. The method is applied to the Schr\\"{o}dinger equation and the non-polynomial potential $V(r)=r^2+\\frac{b r^2}{(1+cr^2)}$ in three dimensions is discussed as an illustrative example.

T. Barakat

2007-08-16T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" 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

Partial decay widths of negative parity baryons in the 1/N{sub c} expansion  

SciTech Connect (OSTI)

The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/N{sub c} expansion. The channels considered are those with single pseudoscalar meson emission. The analysis is carried out to sub-leading order in 1/N{sub c} and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are given.

Gonzalez de Urreta, E. J. [Physics Department, Centro Atomico Constituyentes, CNEA, Argentina, CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Scoccola, N. N. [Physics Department, Centro Atomico Constituyentes, CNEA, Argentina, CONICET, Rivadavia 1917, 1033 Buenos Aires, Argentina. and Universidad Favaloro, Solis 453, 1078 Buenos Aires (Argentina); Jayalath, C. P. [Department of Physics, Hampton University, Hampton, VA 23668 (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States) and Department of Physics, Peradeniya University, Peradeniya (20400) (Sri Lanka); Goity, J. L. [Department of Physics, Hampton University, Hampton, VA 23668 (United States); Thomas Jefferson National Accelerator Facility, Newport News, VA 23606 (United States)

2013-03-25T23:59:59.000Z

422

Negative parity baryon decays in the 1/N{sub c} expansion  

SciTech Connect (OSTI)

The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/N{sub c} expansion. The channels considered are those with single pseudoscalar meson emission. The analysis is carried out to sub-leading order in 1/N{sub c} and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are obtained.

Jayalath, C. [Department of Physics, Hampton University, Hampton, Virginia 23668 (United States); Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States); Department of Physics, Peradeniya University, Peradeniya 20400 (Sri Lanka); Goity, J. L. [Department of Physics, Hampton University, Hampton, Virginia 23668 (United States); Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (United States); Gonzalez de Urreta, E. [Department of Theoretical Physics, Comision Nacional de Energia Atomica, 1429 Buenos Aires (Argentina); CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Scoccola, N. N. [Department of Theoretical Physics, Comision Nacional de Energia Atomica, 1429 Buenos Aires (Argentina); CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Universidad Favaloro, Solis 453, 1078 Buenos Aires (Argentina)

2011-10-01T23:59:59.000Z

423

Isentropic expansion of copper plasma in Mbar pressure range at “Luch” laser facility  

SciTech Connect (OSTI)

We present experimental results on thermodynamic properties of dense copper plasma in Mbar pressure range. The laser facility “Luch” with laser intensity 10{sup 14}?W/cm{sup 2} is used to compress copper up to ?8?Mbar by a strong shock wave; subsequent expansion of copper plasma into Al, Ti, Sn allows us to obtain release isentropes of copper by the impedance–matching method. A theoretical analysis and quantum simulations show that in our experiments strongly coupled quantum plasma is generated.

Bel'kov, S. A.; Derkach, V. N.; Garanin, S. G.; Mitrofanov, E. I.; Voronich, I. N. [Russian Federal Nuclear Center – VNIIEF, Sarov (Russian Federation); Fortov, V. E.; Levashov, P. R.; Minakov, D. V. [Joint Institute for High Temperatures, Moscow, Russia and Moscow Institute of Physics and Technology (State University), Dolgoprudny (Russian Federation)

2014-01-21T23:59:59.000Z

424

Correlation-function asymptotic expansions: Universality of prefactors of the one-dimensional Hubbard model  

SciTech Connect (OSTI)

We show that the prefactors of all terms of the one-dimensional (1D) Hubbard model correlation-function asymptotic expansions have a universal form, as the corresponding critical exponents. In addition to calculating such prefactors, our study clarifies the relation of the low-energy Tomonaga-Luttinger-liquid behavior to the scattering mechanisms which control the spectral properties of the model at all energy scales. Our results are of general nature for many integrable interacting models and provide a broader understanding of the unusual properties of quasi-1D nanostructures, organic conductors, and optical lattices of fermionic atoms.

Carmelo, J. M. P. [Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States); GCEP-Center of Physics, University of Minho, P-4710-057 Braga (Portugal); Penc, K. [Research Institute for Solid State Physics and Optics, H-1525 Budapest, P.O. Box 49 (Hungary)

2006-03-15T23:59:59.000Z

425

Partial Decay Widths of Negative Parity Baryons in the 1/N{sub c} Expansion  

SciTech Connect (OSTI)

The partial decay widths of lowest lying negative parity baryons belonging to the 70-plet of SU(6) are analyzed in the framework of the 1/N{sub c} expansion. The channels considered are those with single pseudoscalar meson emission. The analysis is carried out to sub-leading order in 1/N{sub c} and to first order in SU(3) symmetry breaking. Conclusions about the magnitude of SU(3) breaking effects along with predictions for some unknown or poorly determined partial decay widths of known resonances are given.

Gonzalez de Urreta, Emiliano [CNEA, Buenos Aires; Scoccola, Norberto [CNEA, Buenos Aires; Jayalath, Chandala [JLAB, Hampton U.; Goity, Jose [JLAB, Hampton U.

2013-04-01T23:59:59.000Z

426

Aspects of excited baryon phenomenology in the 1/N{sub c} expansion of QCD  

SciTech Connect (OSTI)

We report on the application of the 1/N{sub c} expansion of QCD to the description of the properties of non-strange excited baryons belonging to the [70, 1{sup -}]-plet. In particular, we present the results of an improved determination of the corresponding mixing angles obtained by performing a simultaneous fit of masses and strong decay widths. We find {theta}{sub 1} 0.47{+-}0.06 and {theta}{sub 3} = 2.74{+-}0.07. These values are within the range of those determined in previous non-global analyses but have smaller uncertainties.

Gonzalez de Urreta, E. J. [Physics Department, Centro Atomico Constituyentes, CNEA, Argentina, CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Scoccola, Norberto N. [Physics Department, Centro Atomico Constituyentes, CNEA, Argentina, CONICET, Rivadavia 1917, 1033 Buenos Aires (Argentina); Universidad Favaloro, Solis 453, 1078 Buenos Aires (Argentina)

2010-11-12T23:59:59.000Z

427

Phase-mixing of Langmuir oscillations in cold electron-positron-ion plasmas  

SciTech Connect (OSTI)

Space-time evolution of Langmuir oscillations in a cold homogeneous electron-positron-ion plasma has been analyzed by employing a straightforward perturbation expansion method, showing phase-mixing and, thus, wave-breaking of excited oscillations at arbitrary amplitudes. Within an assumption of infinitely massive ions, an approximate phase-mixing time is found to scale as ?{sub pe}t{sub mix}?[(6/?{sup 2})((2??){sup 5/2}/(1??))]{sup 1/3}, where “?” and “?” (= n{sub 0i}/n{sub 0e}) are the amplitude of perturbation and the ratio of equilibrium ion density to equilibrium electron density, respectively, and ?{sub pe}??(4?n{sub 0e}e{sup 2}/m) is the electron plasma frequency. The results presented on phase-mixing of Langmuir modes in multispecies plasmas are expected to be relevant to laboratory and astrophysical environments.

Maity, Chandan [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India)

2014-07-15T23:59:59.000Z

428

Phase equilibrium studies  

SciTech Connect (OSTI)

A phase equilibrium model has been developed for the SRC-I process, as well as the other coal liquefaction processes. It is applicable to both vapor/liquid and liquid/liquid equilibria; it also provides an approximate but adequate description of aqueous mixtures where the volatile electrolyte components dissociate to form ionic species. This report completes the description of the model presented in an earlier report (Mathias and Stein, 1983a). Comparisons of the model to previously published data on coal-fluid mixtures are presented. Further, a preliminary analysis of new data on SRC-I coal fluids is presented. Finally, the current capabilities and deficiencies of the model are discussed. 25 references, 17 figures, 30 tables.

Mathias, P.M.; Stein, F.P.

1983-09-01T23:59:59.000Z

429

Commensurate phases, incommensurate phases and the devil’s staircase  

E-Print Network [OSTI]

Modulated structures with periods which are incommensurable (or high-order com-mensurable) with the basic lattice are quite common in condensed-matter physics. The structure may be another lattice, a periodic lattice distortion, a helical or sinusoidal magnetic structure, or a charge density wave in one, two or three dimensions. This review surveys recent theories on the transition between commensurate (C) and incommensurate (I) phases, and on the properties of the ‘incommensurate ’ phase. The predictions of theories will be compared with experiments. The CI transition is usually described in terms of wall, or soliton, formation. The nature of the transition and the structure of the I phase are quite different in two and three dimensions. In three dimensions the I phase seems to consist of an infinity of high-order locked C phases, which may or may not be separated by an infinity of truly incommensurate phases. This behaviour is known as the ‘devil’s staircase’. In two dimensions the incommensurate phase (at T # 0) is a ‘floating ’ phase without complete long-range order, and it does not ‘lock-in ’ at high-order commensurate phases. Phase diagrams are determined by the stability of two types of ‘topological ’ defects: walls, which destabilise the C phase with respect to I phases, and dislocations or vortices which generate paramagnetic or fluid phases. A consequence of this competition is that for sufficiently low order of commensurability the C and I phases are separated by a fluid phase. The properties of modulated systems can be studied by iterating certain area-preserving two-dimensional maps. Very recent studies indicate that, in addition to C and I phases, there are chaotic structures which are at least metastable. The chaotic regimes separate C and I phases and may be described as randomly pinned solitons. The relevance of the chaotic regimes to adsorbed monolayers, pinning of charge density waves, Peierls transitions and spin glasses is briefly discussed. This review was received in July 1981.

Per Bak

430

Anisotropic thermal expansion in silicates: A density functional study of -eucryptite and related materials  

E-Print Network [OSTI]

. The structural phase transition at 755 K arises from positional order- disorder of the Li ions. A survey phase transition at 755 K.6 It is not surprising that it has been the subject of much study for many ions. Below the order-disorder transition the Li ions form a su- perstructure occupying sites in the Si

431

Blanketing effect of expansion foam on liquefied natural gas (LNG) spillage pool  

Science Journals Connector (OSTI)

Abstract With increasing consumption of natural gas, the safety of liquefied natural gas (LNG) utilization has become an issue that requires a comprehensive study on the risk of LNG spillage in facilities with mitigation measures. The immediate hazard associated with an LNG spill is the vapor hazard, i.e., a flammable vapor cloud at the ground level, due to rapid vaporization and dense gas behavior. It was believed that high expansion foam mitigated LNG vapor hazard through warming effect (raising vapor buoyancy), but the boil-off effect increased vaporization rate due to the heat from water drainage of foam. This work reveals the existence of blocking effect (blocking convection and radiation to the pool) to reduce vaporization rate. The blanketing effect on source term (vaporization rate) is a combination of boil-off and blocking effect, which was quantitatively studied through seven tests conducted in a wind tunnel with liquid nitrogen. Since the blocking effect reduces more heat to the pool than the boil-off effect adds, the blanketing effect contributes to the net reduction of heat convection and radiation to the pool by 70%. Water drainage rate of high expansion foam is essential to determine the effectiveness of blanketing effect, since water provides the boil-off effect.

Bin Zhang; Yi Liu; Tomasz Olewski; Luc Vechot; M. Sam Mannan

2014-01-01T23:59:59.000Z

432

Conformal field theories at non-zero temperature: operator product expansions, Monte Carlo, and holography  

E-Print Network [OSTI]

We compute the non-zero temperature conductivity of conserved flavor currents in conformal field theories (CFTs) in 2+1 spacetime dimensions. At frequencies much greater than the temperature, $\\hbar\\omega>> k_B T$, the $\\omega$ dependence can be computed from the operator product expansion (OPE) between the currents and operators which acquire a non-zero expectation value at T > 0. Such results are found to be in excellent agreement with quantum Monte Carlo studies of the O(2) Wilson-Fisher CFT. Results for the conductivity and other observables are also obtained in vector 1/N expansions. We match these large $\\omega$ results to the corresponding correlators of holographic representations of the CFT: the holographic approach then allows us to extrapolate to small $\\hbar \\omega/(k_B T)$. Other holographic studies implicitly only used the OPE between the currents and the energy-momentum tensor, and this yields the correct leading large $\\omega$ behavior for a large class of CFTs. However, for the Wilson-Fisher ...

Katz, Emanuel; Sorensen, Erik S; Witczak-Krempa, William

2014-01-01T23:59:59.000Z

433

Conformal field theories at non-zero temperature: operator product expansions, Monte Carlo, and holography  

E-Print Network [OSTI]

We compute the non-zero temperature conductivity of conserved flavor currents in conformal field theories (CFTs) in 2+1 spacetime dimensions. At frequencies much greater than the temperature, $\\hbar\\omega>> k_B T$, the $\\omega$ dependence can be computed from the operator product expansion (OPE) between the currents and operators which acquire a non-zero expectation value at T > 0. Such results are found to be in excellent agreement with quantum Monte Carlo studies of the O(2) Wilson-Fisher CFT. Results for the conductivity and other observables are also obtained in vector 1/N expansions. We match these large $\\omega$ results to the corresponding correlators of holographic representations of the CFT: the holographic approach then allows us to extrapolate to small $\\hbar \\omega/(k_B T)$. Other holographic studies implicitly only used the OPE between the currents and the energy-momentum tensor, and this yields the correct leading large $\\omega$ behavior for a large class of CFTs. However, for the Wilson-Fisher CFT a relevant "thermal" operator must also be considered, and then consistency with the Monte Carlo results is obtained without a previously needed ad hoc rescaling of the T value. We also establish sum rules obeyed by the conductivity of a wide class of CFTs.

Emanuel Katz; Subir Sachdev; Erik S. Sorensen; William Witczak-Krempa

2014-09-12T23:59:59.000Z

434

Real time cosmology - A direct measure of the expansion rate of the Universe  

E-Print Network [OSTI]

In recent years cosmology has undergone a revolution, with precise measurements of the microwave background radiation, large galaxy redshift surveys, and the discovery of the recent accelerated expansion of the Universe using observations of distant supernovae. In this light, the SKA enables us to do an ultimate test in cosmology by measuring the expansion rate of the Universe in real time. This can be done by a rather simple experiment of observing the neutral hydrogen (HI) signal of galaxies at two different epochs. The signal will encounter a change in frequency imprinted as the Universe expands over time and thus monitoring the drift in frequencies will provide a real time measure of the cosmic acceleration. Over a period of 12 years one would expected a frequency shift of the order of 0.1 Hz assuming a standard Lambda-CDM cosmology. Based on the sensitivity estimates of the SKA and the number counts of the expected HI galaxies, it is shown that the number counts are sufficiently high to compensate for th...

Klöckner, H -R; Martins, C; Raccanelli, A; Champion, D; Roy, A; Lobanov, A; Wagner, J; Keller, R

2015-01-01T23:59:59.000Z

435

A Born-Oppenheimer Expansion in a Neighborhood of a Renner-Teller Intersection  

E-Print Network [OSTI]

We perform a rigorous mathematical analysis of the bending modes of a linear triatomic molecule that exhibits the Renner-Teller effect. Assuming the potentials are smooth, we prove that the wave functions and energy levels have asymptotic expansions in powers of epsilon, where epsilon^4 is the ratio of an electron mass to the mass of a nucleus. To prove the validity of the expansion, we must prove various properties of the leading order equations and their solutions. The leading order eigenvalue problem is analyzed in terms of a parameter b, which is equivalent to the parameter originally used by Renner. For 0 < b < 1, we prove self-adjointness of the leading order Hamiltonian, that it has purely discrete spectrum, and that its eigenfunctions and their derivatives decay exponentially. Perturbation theory and finite difference calculations suggest that the ground bending vibrational state is involved in a level crossing near b = 0.925. We also discuss the degeneracy of the eigenvalues. Because of the crossing, the ground state is degenerate for 0 < b < 0.925 and non-degenerate for 0.925 < b < 1.

Mark S. Herman

2009-01-22T23:59:59.000Z

436

Hearing Outcomes After Stereotactic Radiosurgery for Unilateral Intracanalicular Vestibular Schwannomas: Implication of Transient Volume Expansion  

SciTech Connect (OSTI)

Purpose: We evaluated the prognostic factors for hearing outcomes after stereotactic radiosurgery (SRS) for unilateral sporadic intracanalicular vestibular schwannomas (IC-VSs) as a clinical homogeneous group of VSs. Methods and Materials: Sixty consecutive patients with unilateral sporadic IC-VSs, defined as tumors in the internal acoustic canal, and serviceable hearing (Gardner-Roberson grade 1 or 2) were treated with SRS as an initial treatment. The mean tumor volume was 0.34 {+-} 0.03 cm{sup 3} (range, 0.03-1.00 cm{sup 3}), and the mean marginal dose was 12.2 {+-} 0.1 Gy (range, 11.5-13.0 Gy). The median follow-up duration was 62 months (range, 36-141 months). Results: The actuarial rates of serviceable hearing preservation were 70%, 63%, and 55% at 1, 2, and 5 years after SRS, respectively. In multivariate analysis, transient volume expansion of {>=}20% from initial tumor size was a statistically significant risk factor for loss of serviceable hearing and hearing deterioration (increase of pure tone average {>=}20 dB) (odds ratio = 7.638; 95% confidence interval, 2.317-25.181; P=.001 and odds ratio = 3.507; 95% confidence interval, 1.228-10.018; P=.019, respectively). The cochlear radiation dose did not reach statistical significance. Conclusions: Transient volume expansion after SRS for VSs seems to be correlated with hearing deterioration when defined properly in a clinically homogeneous group of patients.

Kim, Young-Hoon [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of) [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Kim, Dong Gyu, E-mail: gknife@plaza.snu.ac.kr [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Han, Jung Ho [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of) [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Chung, Hyun-Tai; Kim, In Kyung; Song, Sang Woo [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of) [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Park, Jeong-Hoon [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of) [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Kim, Jin Wook; Kim, Yong Hwy; Park, Chul-Kee [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of) [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Kim, Chae-Yong [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of) [Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam-si (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of); Paek, Sun Ha; Jung, Hee-Won [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of) [Department of Neurosurgery, Seoul National University Hospital, Seoul (Korea, Republic of); Department of Neurosurgery, Seoul National University College of Medicine, Seoul (Korea, Republic of)

2013-01-01T23:59:59.000Z

437

Interplay between MacDonald and Hall-Littlewood expansions of extended torus superpolynomials  

E-Print Network [OSTI]

In arXiv:1106.4305 extended superpolynomials were introduced for the torus links T[m,mk+r], which are functions on the entire space of time variables and, at expense of reducing the topological invariance, possess additional algebraic properties, resembling those of the matrix model partition functions and the KP/Toda tau-functions. Not surprisingly, being a suitable extension it actually allows one to calculate the superpolynomials. These functions are defined as expansions into MacDonald polynomials, and their dependence on k is entirely captured by the action of the cut-and-join operator, like in the HOMFLY case. We suggest a simple description of the coefficients in these character expansions, by expanding the initial (at k=0) conditions for the k-evolution into the new auxiliary basis, this time provided by the Hall-Littlewood polynomials, which, hence, play a role in the description of the dual m-evolution. For illustration we list manifest expressions for a few first series, mk\\pm 1, mk\\pm 2, mk\\pm 3, mk\\pm 4. Actually all formulas were explicitly tested up to m=17 strands in the braid.

A. Mironov; A. Morozov; Sh. Shakirov; A. Sleptsov

2012-02-17T23:59:59.000Z

438

Expansion-contraction cycles for cement optimized as a function of additives  

SciTech Connect (OSTI)

An experimental study was carried out to investigate the addition of specific additives to cement in order to eliminate the micro-fractures and micro-annuli that cause gas migration. The experiments performed monitored the change in the cement slurry pressure during the setting of the cement. During the setting period of the cement, two time cycles of cement expansion and contraction were observed. This is due to the individual contributions of each part of the cement mixture. To obtain the optimum tightness of the cement, final optimum concentrations of the additives were obtained experimentally, where the cyclic pressure behavior of the cement was optimized for the best final cement results. By utilizing the correct amount of Anchorage Clay, XC-Polymer, Ironite Scavenger, Ultrafine cement and Synthetic Rubber powder in a class G mixture at a given temperature and confining pressure, an impermeable cement mixture can be obtained. The correct amount of Synthetic Rubber used for cyclic pressure reduction is a function of cement setting temperature and pressure as well as the elastic properties of the rubber. By using laboratory testing at different pressure and temperature with different rubber concentrations and elastic properties, it is estimated that the entire annulus can have an impermeable cement from surface to total depth. The difference in temperature and pressure with depth dictates the concentration and elastic properties of the rubber as the required expansion and contraction changes with depth.

Talabani, S.; Hareland, G. [New Mexico Inst. of Mining and Technology, Socorro, NM (United States)

1995-12-31T23:59:59.000Z

439

EXPANSE methodology for evaluating the economic potential of renewable energy from an energy mix perspective  

Science Journals Connector (OSTI)

Abstract Several methodologies exist for evaluating the economic potential of renewable energy sources. These methodologies either cannot capture how this economic potential depends on its embedding in the whole energy mix, or provide a single cost-optimal energy mix, which is not flexible enough for building consensus among the relevant stakeholders. This article addresses these two limitations and introduces a novel methodology EXPANSE (EXploration of \\{PAtterns\\} in Near-optimal energy ScEnarios) for evaluating the economic potential of renewable energy sources from an energy mix perspective. This methodology is based on generation of cost-optimal and multiple near-optimal energy mixes. These mixes show the maximum, technically feasible, cost-effective potential of a renewable energy source under consideration and how this potential depends on the other supply alternatives and energy savings in an energy mix. The methodology is illustrated with the example of the renewable energy use for heat supply in a Swiss region. The example shows that even a particular renewable energy source is costlier than the currently deployed alternatives such as oil, its economic potential in an energy mix can be as high as its full exploitable (theoretical) potential, when some deviation is allowed from the cost-optimal energy mix. However, the full economic potential of all renewable energy sources cannot be utilized simultaneously. The full deployment of the economic potential of one renewable energy source decreases the economic potential of others. EXPANSE provides basis for analyzing such interlinkages.

Evelina Trutnevyte

2013-01-01T23:59:59.000Z

440

Relocation -- A concept for dealing with measurement object expansion or contraction  

SciTech Connect (OSTI)

Over the last decade, industrial metrology has experienced a tremendous improvement in measurement sensors. First, optical tooling was made obsolete by theodolite systems, which in turn are now being displaced by laser trackers. Furthermore, there are already first indications that laser trackers, as far as static measurements are concerned, will have to compete very hard with the next generation of motorized total stations. These technological advances have made it possible to measure even large objects with high resolution. Now, as it turns out, the factor limiting the achievable accuracy is not equipment related but is imposed by atmospheric effects. These effects are refraction, scintillation, and temperature related object expansion and contraction. Due to temperature changes, large objects, like an airplane's fuselage or wing, will significantly expand or contract during the course of a laser tracker or theodolite system measurement. Typical data analysis software does not model these changes and hence, will absorb them in the least squares process. This leads to inaccuracies in the individual target point coordinates and their corresponding standard deviations, as well as to a warping of the coordinate system. This paper will propose a method for dealing with measurement object expansion and contraction effects.

Ruland, R.; LeCocq, C.

1997-02-01T23:59:59.000Z

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441

Thermal performance analysis of a direct-expansion solar-assisted heat pump water heater  

Science Journals Connector (OSTI)

A direct-expansion solar-assisted heat pump water heater (DX-SAHPWH) is described, which can supply hot water for domestic use during the whole year. The system mainly employs a bare flat-plate collector/evaporator with a surface area of 4.2 m2, an electrical rotary-type hermetic compressor, a hot water tank with the volume of 150 L and a thermostatic expansion valve. R-22 is used as working fluid in the system. A simulation model based on lumped and distributed parameter approach is developed to predict the thermal performance of the system. Given the structure parameters, meteorological parameters, time step and final water temperature, the numerical model can output operational parameters, such as heat capacity, system COP and collector efficiency. Comparisons between the simulation results and the experimental measurements show that the model is able to give satisfactory predictions. The effect of various parameters, including solar radiation, ambient temperature, wind speed and compressor speed, has been analyzed on the thermal performance of the system.

X.Q. Kong; D. Zhang; Y. Li; Q.M. Yang

2011-01-01T23:59:59.000Z

442

Uncorrelated Measurements of the Cosmic Expansion History and Dark Energy from Supernovae  

E-Print Network [OSTI]

We present a method for measuring the cosmic expansion history H(z) in uncorrelated redshift bins, and apply it to current and simulated type Ia supernova data assuming spatial flatness. If the matter density parameter Omega_m can be accurately measured from other data, then the dark energy density history X(z)=rho_X(z)/rho_X(0) can trivially be derived from this expansion history H(z). In contrast to customary ``black box'' parameter fitting, our method is transparent and easy to interpret: the measurement of H(z)^{-1} in a redshift bin is simply a linear combination of the measured comoving distances for supernovae in that bin, making it obvious how systematic errors propagate from input to output. We find the Riess et al. (2004) ``gold'' sample to be consistent with the ``vanilla'' concordance model where the dark energy is a cosmological constant. We compare two mission concepts for the NASA/DOE Joint Dark Energy Mission (JDEM), the Joint Efficient Dark-energy Investigation (JEDI), and the Supernova Accelaration Probe (SNAP), using simulated data including the effect of weak lensing (based on numerical simulations) and a systematic bias from K-corrections. Estimating H(z) in seven uncorrelated redshift bins, we find that both provide dramatic improvements over current data: JEDI can measure H(z) to about 10% accuracy and SNAP to 30-40% accuracy.

Yun Wang; Max Tegmark

2005-01-18T23:59:59.000Z

443

Normal mode expansions in dynamic electroelasticity and their application to electromechanical energy conversion  

Science Journals Connector (OSTI)

A method of eigenfunction expansions is extended to transient problems of dynamics of piezoelectric bodies. After investigation of the eigenfunctions’ properties the general solution of an initial boundary?value problem is constructed in the form of a series of eigenfunctions. Considerable differences between the structure of expansions obtained in this paper and that for a purely elastic case are discussed. The method derived is shown to be a convenient mathematical and physical basis of the theory of electromechanical energy conversion grounded on the concept of the electromechanical coupling factor. It allows one to present this important nonlinear integral characteristic of electroelastic field in the form of a combination of factors corresponding to normal modes of vibrations. The latter quantities are approximately equal to effective coupling factors. These factors can be easily calculated from experimental data by means of the Mason formula instead of Ulitko’s energy?related definition used in the paper. In practical problems this circumstance enables one to simplify calculation of maximal values of the coupling factor and corresponding distributions of displacement with the formulas derived. In general a consistent theory suggested in this paper gives one an opportunity to understand better the nature of dynamical behavior of piezoelectric bodies and of electromechanical energy conversion.

Oleg Yu. Zharii

1992-01-01T23:59:59.000Z

444

A Dialogue of Multipoles: Matched Asymptotic Expansion for Caged Black Holes  

E-Print Network [OSTI]

No analytic solution is known to date for a black hole in a compact dimension. We develop an analytic perturbation theory where the small parameter is the size of the black hole relative to the size of the compact dimension. We set up a general procedure for an arbitrary order in the perturbation series based on an asymptotic matched expansion between two coordinate patches: the near horizon zone and the asymptotic zone. The procedure is ordinary perturbation expansion in each zone, where additionally some boundary data comes from the other zone, and so the procedure alternates between the zones. It can be viewed as a dialogue of multipoles where the black hole changes its shape (mass multipoles) in response to the field (multipoles) created by its periodic "mirrors", and that in turn changes its field and so on. We present the leading correction to the full metric including the first correction to the area-temperature relation, the leading term for black hole eccentricity and the "Archimedes effect". The next order corrections will appear in a sequel. On the way we determine independently the static perturbations of the Schwarzschild black hole in dimension d>=5, where the system of equations can be reduced to "a master equation" - a single ordinary differential equation. The solutions are hypergeometric functions which in some cases reduce to polynomials.

Dan Gorbonos; Barak Kol

2004-06-01T23:59:59.000Z

445

A Dialogue of Multipoles: Matched Asymptotic Expansion for Caged Black Holes  

E-Print Network [OSTI]

No analytic solution is known to date for a black hole in a compact dimension. We develop an analytic perturbation theory where the small parameter is the size of the black hole relative to the size of the compact dimension. We set up a general procedure for an arbitrary order in the perturbation series based on an asymptotic matched expansion between two coordinate patches: the near horizon zone and the asymptotic zone. The procedure is ordinary perturbation expansion in each zone, where additionally some boundary data comes from the other zone, and so the procedure alternates between the zones. It can be viewed as a dialogue of multipoles where the black hole changes its shape (mass multipoles) in response to the field (multipoles) created by its periodic "mirrors", and that in turn changes its field and so on. We present the leading correction to the full metric including the first correction to the area-temperature relation, the leading term for black hole eccentricity and the "Archimedes effect". The nex...

Gorbonos, Dan; Gorbonos, Dan; Kol, Barak

2004-01-01T23:59:59.000Z

446

Heat kernel expansions on the integers and the Toda lattice hierarchy  

E-Print Network [OSTI]

We consider the heat equation $u_t=Lu$ where $L$ is a second-order difference operator in a discrete variable $n$. The fundamental solution has an expansion in terms of the Bessel functions of imaginary argument. The coefficients $\\alpha_k(n,m)$ in this expansion are analogs of Hadamard's coefficients for the (continuous) Schrodinger operator. We derive an explicit formula for $\\alpha_k$ in terms of the wave and the adjoint wave functions of the Toda lattice hierarchy. As a first application of this result, we prove that the values of these coefficients on the diagonals $n=m$ and $n=m+1$ define a hierarchy of differential-difference equations which is equivalent to the Toda lattice hierarchy. Using this fact and the correspondence between commutative rings of difference operators and algebraic curves we show that the fundamental solution can be summed up, giving a finite formula involving only two Bessel functions with polynomial coefficients in the time variable $t$, if and only if the operator $L$ belongs to the family of bispectral operators constructed in [18].

Plamen Iliev

2006-05-31T23:59:59.000Z

447

Performance characteristics of a turbo expander substituted for expansion valve on air-conditioner  

Science Journals Connector (OSTI)

An experimental study is conducted on a small turbo expander which could be applied to the expansion process in place of expansion valves in refrigerator or air-conditioner to improve the cycle efficiency by recovering energy from the throttling process. The operating gas is \\{HFC134a\\} and the maximum cooling capacity of experiment apparatus is 32.7 kW. Four different turbo expanders are tested to find the performance characteristics of the turbo expander when they operate at a low partial admission rate. The partial admission rate is 1.70% or 2.37, and expanders are operated in the supersonic flow. In the experiment, pressure and temperature are measured at 10 different locations in the experimental apparatus. In addition to these measurements, output power at the turbo expander is measured through a generator installed on a rotor shaft with the rotational speed. Performance data of the turbo expander are obtained at many part load operations by adjusting the output power of the generator. A maximum of 15.8% total-to-static efficiency is obtained when the pressure ratio and the partial admission ratio are 2.37 and 1.70%, respectively. Experimental results show that the optimal velocity ratio decreases when the pressure ratio is decreased, and peak efficiencies, which are obtained at locally maximized efficiency depending on the operating condition, vary linearly against the subcooling temperature or the pressure ratio.

Soo-Yong Cho; Chong-Hyun Cho; Chaesil Kim

2008-01-01T23:59:59.000Z

448

Performance characteristics of a turbo expander substituted for expansion valve on air-conditioner  

SciTech Connect (OSTI)

An experimental study is conducted on a small turbo expander which could be applied to the expansion process in place of expansion valves in refrigerator or air-conditioner to improve the cycle efficiency by recovering energy from the throttling process. The operating gas is HFC134a and the maximum cooling capacity of experiment apparatus is 32.7 kW. Four different turbo expanders are tested to find the performance characteristics of the turbo expander when they operate at a low partial admission rate. The partial admission rate is 1.70% or 2.37, and expanders are operated in the supersonic flow. In the experiment, pressure and temperature are measured at 10 different locations in the experimental apparatus. In addition to these measurements, output power at the turbo expander is measured through a generator installed on a rotor shaft with the rotational speed. Performance data of the turbo expander are obtained at many part load operations by adjusting the output power of the generator. A maximum of 15.8% total-to-static efficiency is obtained when the pressure ratio and the partial admission ratio are 2.37 and 1.70%, respectively. Experimental results show that the optimal velocity ratio decreases when the pressure ratio is decreased, and peak efficiencies, which are obtained at locally maximized efficiency depending on the operating condition, vary linearly against the subcooling temperature or the pressure ratio. (author)

Cho, Soo-Yong [Department of Mechanical and Aerospace Engineering (ReCAPT), Gyeongsang National University, 900 Gajoa-dong, Jinju 660-701 (Korea); Cho, Chong-Hyun [School of Mechanical and Aerospace Engineering, Gyeongsang National University, 900 Gajoa-dong, Jinju 660-701 (Korea); Kim, Chaesil [Department of Mechanical Engineering, Changwon National University, 9 Sarim-dong, Changwon 641-773 (Korea)

2008-09-15T23:59:59.000Z

449

Investigation of ultrafast photothermal surface expansion and diffusivity in GaAs via laser-induced dynamic gratings  

SciTech Connect (OSTI)

This thesis details the first direct ultrafast measurements of the dynamic thermal expansion of a surface and the temperature dependent surface thermal diffusivity using a two-color reflection transient grating technique. Studies were performed on p-type, n-type, and undoped GaAs(100) samples over a wide range of temperatures. By utilizing a 90 fs ultraviolet probe with visible excitation beams, the effects of interband saturation and carrier dynamics become negligible; thus lattice expansion due to heating and subsequent contraction caused by cooling provided the dominant influence on the probe. At room temperature a rise due to thermal expansion was observed, corresponding to a maximum net displacement of {approximately} 1 {Angstrom} at 32 ps. The diffracted signal was composed of two components, thermal expansion of the surface and heat flow away from the surface, thus allowing a determination of the rate of expansion as well as the surface thermal diffusivity, D{sub S}. By varying the fringe spacing of the grating, this technique has the potential to separate the signal contributions to the expansion of the lattice in the perpendicular and parallel directions. In the data presented here a large fringe spacing was used, thus the dominant contribution to the rising edge of the signal was expansion perpendicular to the surface. Comparison of he results with a straightforward thermal model yields good agreement over a range of temperatures (20--300{degrees}K). Values for D{sub S} in GaAs were measured and found to be in reasonable agreement with bulk values above 50{degrees}K. Below 50{degrees}K, D{sub S} were determined to be up to an order of magnitude slower than the bulk diffusivity due to increased phonon boundary scattering. The applicability and advantages of the TG technique for studying photothermal and photoacoustic phenomena are discussed.

Pennington, D.M.

1992-04-01T23:59:59.000Z

450

The Noncommutative Anandan's Quantum Phase  

E-Print Network [OSTI]

In this work we study the noncommutative nonrelativistic quantum dynamics of a neutral particle, that possesses permanent magnetic and electric dipole momenta, in the presence of an electric and magnetic fields. We use the Foldy-Wouthuysen transformation of the Dirac spinor with a non-minimal coupling to obtain the nonrelativistic limit. In this limit, we will study the noncommutative quantum dynamics and obtain the noncommutative Anandan's geometric phase. We analyze the situation where magnetic dipole moment of the particle is zero and we obtain the noncommutative version of the He-McKellar-Wilkens effect. We demonstrate that this phase in the noncommutative case is a geometric dispersive phase. We also investigate this geometric phase considering the noncommutativity in the phase space and the Anandan's phase is obtained.

E. Passos; L. R. Ribeiro; C. Furtado; J. R. Nascimento

2007-06-18T23:59:59.000Z

451

The Noncommutative Anandan's Quantum Phase  

E-Print Network [OSTI]

In this work we study the noncommutative nonrelativistic quantum dynamics of a neutral particle, that possesses permanent magnetic and electric dipole momenta, in the presence of an electric and magnetic fields. We use the Foldy-Wouthuysen transformation of the Dirac spinor with a non-minimal coupling to obtain the nonrelativistic limit. In this limit, we will study the noncommutative quantum dynamics and obtain the noncommutative Anandan's geometric phase. We analyze the situation where magnetic dipole moment of the particle is zero and we obtain the noncommutative version of the He-McKellar-Wilkens effect. We demonstrate that this phase in the noncommutative case is a geometric dispersive phase. We also investigate this geometric phase considering the noncommutativity in the phase space and the Anandan's phase is obtained.

Passos, E; Nascimento, J R; Ribeiro, L R

2006-01-01T23:59:59.000Z

452

Identifying the Bose glass phase  

E-Print Network [OSTI]

Introducing disorder into the Bose-Hubbard model at integer fillings leads to a Bose glass phase, along with the Mott insulator and superfluid phases. We suggest a new order parameter: the determinant of the one body density matrix, which is nonzero only within the Mott-insulator phase. Alongside the superfluid fraction, it is then possible to distinguish the three phases. The Bose glass phase is the only phase which has vanishing determinant and superfluid fraction. The vanishing of the determinant in the Bose glass phase occurs due to the partial fragmentation of the condensate into localized fragments, each with zero superfluid response, which implies the presence of unoccupied sites and hence the presence of lines of zeros in the one body density matrix. In the superfluid phase, the determinant vanish for another reason - due to the macroscopic occupation of a single particle state. Finally, we suggest the enhancement of the three body decay rate in the Bose glass phase, as an experimental indicator for the presence of localized fragments.

R. Pugatch; N. Bar-gill; N. Katz; E. Rowen; N. Davidson

2006-07-28T23:59:59.000Z

453

Phase correlations and optical coherence  

Science Journals Connector (OSTI)

We examine the properties of the recently introduced degrees of coherence regarding the phase correlations of the optical field. It is seen that some of these quantities are...

Tervo, Jani; Setälä, Tero; Friberg, Ari T

2012-01-01T23:59:59.000Z

454

Phase-Transfer-Catalyzed Oxidations  

Science Journals Connector (OSTI)

Phase-transfer catalysis (PTC) offers many excellent opportunities for conducting oxidation reactions using inexpensive primary oxidants such as oxygen, sodium hypochlorite, hydrogen peroxide, electrooxidation...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

455

Diffraction Studies of Ordered Phases and Phase Transitions  

E-Print Network [OSTI]

on graphite and A neutron scattering study of the diluted uniaxial dipolar coupled ferromagnets LiTb.3Y.7F4 transition, the critical neutron scattering of either crystal exhibits the asymmetry characteristic PHASES AND PHASE TRANSITIONS: A synchrotron x-ray scattering study of monolayers of CF4 adsorbed

456

APEX user`s guide - (Argonne production, expansion, and exchange model for electrical systems), version 3.0  

SciTech Connect (OSTI)

This report describes operating procedures and background documentation for the Argonne Production, Expansion, and Exchange Model for Electrical Systems (APEX). This modeling system was developed to provide the U.S. Department of Energy, Division of Fossil Energy, Office of Coal and Electricity with in-house capabilities for addressing policy options that affect electrical utilities. To meet this objective, Argonne National Laboratory developed a menu-driven programming package that enables the user to develop and conduct simulations of production costs, system reliability, spot market network flows, and optimal system capacity expansion. The APEX system consists of three basic simulation components, supported by various databases and data management software. The components include (1) the investigation of Costs and Reliability in Utility Systems (ICARUS) model, (2) the Spot Market Network (SMN) model, and (3) the Production and Capacity Expansion (PACE) model. The ICARUS model provides generating-unit-level production-cost and reliability simulations with explicit recognition of planned and unplanned outages. The SMN model addresses optimal network flows with recognition of marginal costs, wheeling charges, and transmission constraints. The PACE model determines long-term (e.g., longer than 10 years) capacity expansion schedules on the basis of candidate expansion technologies and load growth estimates. In addition, the Automated Data Assembly Package (ADAP) and case management features simplify user-input requirements. The ADAP, ICARUS, and SMN modules are described in detail. The PACE module is expected to be addressed in a future publication.

VanKuiken, J.C.; Veselka, T.D.; Guziel, K.A.; Blodgett, D.W.; Hamilton, S.; Kavicky, J.A.; Koritarov, V.S.; North, M.J.; Novickas, A.A.; Paprockas, K.R. [and others

1994-11-01T23:59:59.000Z

457

EXPANSION VELOCITY OF EJECTA IN TYCHO's SUPERNOVA REMNANT MEASURED BY DOPPLER BROADENED X-RAY LINE EMISSION  

SciTech Connect (OSTI)

We show that the expansion of ejecta in Tycho's supernova remnant (SNR) is consistent with a spherically symmetric shell, based on Suzaku measurements of the Doppler broadened X-ray emission lines. All of the strong K{alpha} line emissions show broader widths at the center than at the rim, while the centroid energies are constant across the remnant (except for Ca). This is the pattern expected for Doppler broadening due to expansion of the SNR ejecta in a spherical shell. To determine the expansion velocities of the ejecta, we applied a model for each emission-line feature having two Gaussian components separately representing red- and blueshifted gas, and inferred the Doppler velocity difference between these two components directly from the fitted centroid energy difference. Taking into account the effect of projecting a three-dimensional shell to the plane of the detector, we derived average spherical expansion velocities independently for the K{alpha} emission of Si, S, Ar, and Fe, and K{beta} of Si. We found that the expansion velocities of Si, S, and Ar ejecta of 4700 {+-} 100 km s{sup -1} are distinctly higher than that obtained from Fe K{alpha} emission, 4000 {+-} 300 km s{sup -1}, which is consistent with segregation of the Fe in the inner ejecta. Combining the observed ejecta velocities with the ejecta proper-motion measurements by Chandra, we derived a distance to Tycho's SNR of 4 {+-} 1 kpc.

Hayato, Asami; Yamaguchi, Hiroya; Tamagawa, Toru; Makishima, Kazuo [RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Katsuda, Satoru; Hwang, Una [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Hughes, John P. [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019 (United States); Ozawa, Midori [Department of Physics, Graduate School of Science, Kyoto University, Kita-Shirakawa, Sakyo-ku, Kyoto 606-8502 (Japan); Bamba, Aya [School of Cosmic Physics, Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2 (Ireland); Kinugasa, Kenzo [Gunma Astronomical Observatory, 6860-86, Nakayama, Takayama-mura, Agatsuma-gun, Gunma 377-0702 (Japan); Terada, Yukikatsu [Department of Physics, Saitama University, Shimo-Okubo 255, Sakura, Saitama 338-8570 (Japan); Furuzawa, Akihiro; Kunieda, Hideyo, E-mail: asami.hayato@nasa.go [Division of Particle and Astrophysical Science, Graduate School of Science, Nagoya University, Furo-cho, Nagoya 464-8602 (Japan)

2010-12-10T23:59:59.000Z

458

Structural phase transitions in EuFe[subscript 2]As[subscript 2] superconductor at low temperatures and high pressures  

SciTech Connect (OSTI)

The crystal structure of EuFe{sub 2}As{sub 2} has been studied up to a pressure of 35 GPa and down to a temperature of 8 K using temperature dependent x-ray diffraction in a diamond anvil cell at a synchrotron source. At 4.3 GPa, we have detected a structural phase transition from a high temperature tetragonal phase with I4/mmm space group to a low temperature orthorhombic phase with Fmmm space group around 120 K. With the application of pressure at a low temperature of 10 K, the orthorhombic phase is suppressed and a phase change to a collapsed tetragonal phase with I4/mmm space group is observed at 11 GPa. This collapsed tetragonal phase is similar to the one observed at ambient temperature and pressure above 8.5 GPa. We have shown that the collapsed tetragonal phase of EuFe{sub 2}As{sub 2} has the same pressure-volume (P-V) equation of state at ambient temperature and at 10 K, implying that the high pressure phase of EuFe{sub 2}As{sub 2} has a negligible thermal expansion coefficient.

Uhoya, Walter O.; Tsoi, Georgiy M.; Vohra, Yogesh K.; McGuire, Michael A.; Sefat, Athena S. (UAB); (ORNL)

2011-09-20T23:59:59.000Z

459

Phasing Out the Phase Problem in Interfacial Crystallography  

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

BESSRC/XOR BESSRC/XOR Phasing Out the Phase Problem in Interfacial Crystallography Photo of Paul Fenter (left) and Zhan Zhang at the mineral-fluid interface spectrometer at 12-ID-D (BESSRC/XOR). Paul Fenter (left) and Zhan Zhang at the mineral-fluid interface spectrometer at 12-ID-D (BESSRC/XOR). Since the advent of dedicated synchrotron radiation facilities, the applications of x-ray diffraction and scattering for structure determination have expanded to include a broad range of materials, from proteins and interfaces to nanoparticles. However, the well-known "phase problem" of crystallography limits these applications. The phase problem arises because the complete description of a structure requires a complex structure factor having both a magnitude and a phase. The measured x-ray

460

Quantum phase transition of ultracold bosons in the presence of a non-Abelian synthetic gauge field  

SciTech Connect (OSTI)

We study the Mott phases and the superfluid-insulator transition of two-component ultracold bosons on a square optical lattice in the presence of a non-Abelian synthetic gauge field, which renders a SU(2)-hopping matrix for the bosons. Using a resummed hopping expansion, we calculate the excitation spectra in the Mott insulating phases and demonstrate that the superfluid-insulator phase boundary displays a nonmonotonic dependence on the gauge-field strength. We also compute the momentum distribution of the bosons in the presence of the non-Abelian field and show that they develop peaks at nonzero momenta as the superfluid-insulator transition point is approached from the Mott side. Finally, we study the superfluid phases near the transition and discuss the induced spatial pattern of the superfluid density due to the presence of the non-Abelian gauge potential.

Grass, T. [ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, ES-08860 Castelldefels, Barcelona (Spain); Saha, K.; Sengupta, K. [Theoretical Physics Department, Indian Association for the Cultivation of Science, Kolkata-700032 (India); Lewenstein, M. [ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, ES-08860 Castelldefels, Barcelona (Spain); ICREA-Institucio Catalana de Recerca i Estudis Avancats, Lluis Companys 23, ES-08010 Barcelona (Spain)

2011-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "2003-5 expansion phase" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


461

The Role of Demand Resources In Regional Transmission Expansion Planning and Reliable Operations  

SciTech Connect (OSTI)

Investigating the role of demand resources in regional transmission planning has provided mixed results. On one hand there are only a few projects where demand response has been used as an explicit alternative to transmission enhancement. On the other hand there is a fair amount of demand response in the form of energy efficiency, peak reduction, emergency load shedding, and (recently) demand providing ancillary services. All of this demand response reduces the need for transmission enhancements. Demand response capability is typically (but not always) factored into transmission planning as a reduction in the load which must be served. In that sense demand response is utilized as an alternative to transmission expansion. Much more demand response is used (involuntarily) as load shedding under extreme conditions to prevent cascading blackouts. The amount of additional transmission and generation that would be required to provide the current level of reliability if load shedding were not available is difficult to imagine and would be impractical to build. In a very real sense demand response solutions are equitably treated in every region - when proposed, demand response projects are evaluated against existing reliability and economic criteria. The regional councils, RTOs, and ISOs identify needs. Others propose transmission, generation, or responsive load based solutions. Few demand response projects get included in transmission enhancement plans because few are proposed. But this is only part of the story. Several factors are responsible for the current very low use of demand response as a transmission enhancement alternative. First, while the generation, transmission, and load business sectors each deal with essentially the same amount of electric power, generation and transmission companies are explicitly in the electric power business but electricity is not the primary business focus of most loads. This changes the institutional focus of each sector. Second, market and reliability rules have, understandably, been written around the capabilities and limitations of generators, the historic reliability resources. Responsive load limitations and capabilities are often not accommodated in markets or reliability criteria. Third, because of the institutional structure, demand response alternatives are treated as temporary solutions that can delay but not replace transmission enhancement. Financing has to be based on a three to five year project life as opposed to the twenty to fifty year life of transmission facilities. More can be done to integrate demand response options into transmission expansion planning. Given the societal benefits it may be appropriate for independent transmission planning organizations to take a more proactive role in drawing demand response alternatives into the resource mix. Existing demand response programs provide a technical basis to build from. Regulatory and market obstacles will have to be overcome if demand response alternatives are to be routinely considered in transmission expansion planning.

Kirby, Brendan J [ORNL

2006-07-01T23:59:59.000Z

462

Expansion of the Hadley Cell under Global Warming: Winter versus Summer  

Science Journals Connector (OSTI)

A scaling relationship is introduced to explain the seasonality in the outer boundary of the Hadley cell in both climatology and trend in the simulations of phase 3 of the Coupled Model Intercomparison Project (CMIP3). In the climatological state, ...

Sarah M. Kang; Jian Lu

2012-12-01T23:59:59.000Z

463

PHASE CHANGE LIQUIDS  

SciTech Connect (OSTI)

Work is being performed to develop a new shipping system for frozen environmental samples (or other materials) that uses an optimal phase change liquid (PCL) formulation and an insulated shipping container with an on-board digital temperature data logger to provide a history of the temperature profile within the container during shipment. In previous work, several PCL formulations with temperatures of fusion ranging from approximately -14 to -20 C were prepared and evaluated. Both temperature of fusion and heat of fusion of the formulations were measured, and an optimal PCL formulation was selected. The PCL was frozen in plastic bags and tested for its temperature profile in a cooler using a digital temperature data logger. This testing showed that the PCL formulation can maintain freezer temperatures (< -7 to -20 C) for an extended period, such as the time for shipping samples by overnight courier. The results of the experiments described in this report provide significant information for use in developing an integrated freezer system that uses a PCL formulation to maintain freezer temperatures in coolers for shipping environmental samples to the laboratory. Experimental results show the importance of the type of cooler used in the system and that use of an insulating material within the cooler improves the performance of the freezer system. A new optimal PCL formulation for use in the system has been determined. The new formulation has been shown to maintain temperatures at < -7 to -20 C for 47 hours in an insulated cooler system containing soil samples. These results are very promising for developing the new technology.

Susan S. Sorini; John F. Schabron

2006-03-01T23:59:59.000Z

464

VOLUME 83, NUMBER 3 P H Y S I C A L R E V I E W L E T T E R S 19 JULY 1999 Classical Phase Fluctuations in High Temperature Superconductors  

E-Print Network [OSTI]

Fluctuations in High Temperature Superconductors E. W. Carlson,1 S. A. Kivelson,1 V. J. Emery,2 and E of classical phase fluctuations in the high temperature superconductors using a low temperature expansion importance of the two in the high temperature superconductors, since both are anomalous. The low superfluid

Carlson, Erica

465

Two-phase flow studies  

SciTech Connect (OSTI)

The two-phase flow program is directed at understanding the hydrodynamics of two-phase flows. The two-phase flow regime is characterized by a series of flow patterns that are designated as bubble, slug, churn, and annular flow. Churn flow has received very little scientific attention. This lack of attention cannot be justified because calculations predict that the churn flow pattern will exist over a substantial portion of the two-phase flow zone in producing geothermal wells. The University of Houston is experimentally investigating the dynamics of churn flow and is measuring the holdup over the full range of flow space for which churn flow exists. These experiments are being conducted in an air/water vertical two-phase flow loop. Brown University has constructed and is operating a unique two-phase flow research facility specifically designed to address flow problems of relevance to the geothermal industry. An important feature of the facility is that it is dedicated to two-phase flow of a single substance (including evaporation and condensation) as opposed to the case of a two-component two-phase flow. This facility can be operated with horizontal or vertical test sections of constant diameter or with step changes in diameter to simulate a geothermal well profile.

Hanold, R.J.

1983-12-01T23:59:59.000Z

466

Three phase downhole separator process  

DOE Patents [OSTI]

Three Phase Downhole Separator Process (TPDSP) is a process which results in the separation of all three phases, (1) oil, (2) gas, and (3) water, at the downhole location in the well bore, water disposal injection downhole, and oil and gas production uphole.

Cognata, Louis John (Baytown, TX)

2008-06-24T23:59:59.000Z

467

Microsoft Word - CX-TucannonRiverExpansion-PPA2425_WeB.doc  

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

, 2012 , 2012 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Johny Luiz Electrical Engineer - TEP-CSB-1 Proposed Action: Tucannon River Substation Expansion Project PP&A Project No.: 2,425 Categorical Exclusions Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6, Additions and modifications to transmission facilities; and, B4.11, Electric power substations and interconnection facilities Proposed by: Bonneville Power Administration (BPA) Location: Columbia County, Washington, T10N R41E Sec 8 and 17 Description of the Proposed Action: The energized yard at the existing Tucannon River Substation would be expanded to the east approximately 90 feet, and to the north approximately 100 feet to accommodate two new shunt capacitor banks and associated electrical equipment,

468

Single-enzyme kinetics with branched pathways: exact theory and series expansion  

E-Print Network [OSTI]

The progress of the successive rounds of catalytic conversion of substrates into product(s) by a single enzyme is characterized by the distribution of turnover times. Establishing the most general form of dependence of this distribution on the substrate concentration [S] is one of the fundamental challenges in single molecule enzymology. The distribution of the times of dwell of a molecular motor at the successive positions on its track is an analogous quantity. We derive approximate series expansions for the [ATP]-dependence of the first two moments of the dwell time distributions of motors that catalyze hydrolysis of ATP to draw input energy. Comparison between our results for motors with branched pathways and the corresponding expressions reported earlier for linear enzymatic pathways provides deep insight into the effects of the branches. Such insight is likely to help in discovering the most general form of [S]-dependence of these fundamental distributions.

Ashok Garai; Debashish Chowdhury

2014-12-10T23:59:59.000Z

469

Collective dynamics and expansion of a Bose-Einstein condensate in a random potential  

SciTech Connect (OSTI)

We investigate the dynamics of a Bose-Einstein condensate in the presence of a random potential created by optical speckles. We first consider the effect of a weak disorder on the dipole and quadrupole collective oscillations, finding uncorrelated frequency shifts of the two modes with respect to the pure harmonic case. This behavior, predicted by a sum-rules approach, is confirmed by the numerical solution of the Gross-Pitaevskii equation. Then we analyze the role of disorder on the one-dimensional expansion in an optical guide, discussing possible localization effects. Our theoretical analysis provides a useful insight into the recent experiments performed at LENS [J. E. Lye, L. Fallani, M. Modugno, D. S. Wiersma, C. Fort, and M. Inguscio, Phys. Rev. Lett. 95, 070401 (2005); C. Fort, L. Fallani, V. Guarrera, J. E. Lye, M. Modugno, D. S. Wiersma, and M. Inguscio, Phys. Rev. Lett. 95, 170410 (2005)].

Modugno, Michele [Dipartimento di Matematica Applicata, Universita di Firenze, I-50139 Florence (Italy) and LENS and INFM, Universita di Firenze, I-50019 Sesto Fiorentino, FI (Italy) and BEC-INFM Center, Universita di Trento, I-38050 Povo, TN (Italy)

2006-01-15T23:59:59.000Z

470

The expansion of a collisionless plasma into a plasma of lower density  

SciTech Connect (OSTI)

This paper considers the asymptotic and numerical solution of a simple model for the expansion of a collisionless plasma into a plasma of lower density. The dependence on the density ratio of qualitative and quantitative features of solutions of the well-known cold-ion model is explored. In the cold-ion limit, we find that a singularity develops in the ion density in finite time unless the density ratio is zero or close to unity. The classical cold-ion model may cease to be valid when such a singularity occurs and we then regularize the model by the finite ion-temperature Vlasov-Poisson system. Numerical evidence suggests the emergence of a multi-modal velocity distribution.

Perego, M.; Gunzburger, M. D. [Department of Scientific Computing, Florida State University, Tallahassee, Florida 32306 (United States)] [Department of Scientific Computing, Florida State University, Tallahassee, Florida 32306 (United States); Howell, P. D.; Ockendon, J. R.; Allen, J. E. [OCIAM, Mathematical Institute, Oxford University, 24-29 St Giles, OX1 3LB Oxford (United Kingdom)] [OCIAM, Mathematical Institute, Oxford University, 24-29 St Giles, OX1 3LB Oxford (United Kingdom)

2013-05-15T23:59:59.000Z

471

Coherent states, 6j symbols and properties of the next to leading order asymptotic expansions  

SciTech Connect (OSTI)

We present the first complete derivation of the well-known asymptotic expansion of the SU(2) 6j symbol using a coherent state approach, in particular we succeed in computing the determinant of the Hessian matrix. To do so, we smear the coherent states and perform a partial stationary point analysis with respect to the smearing parameters. This allows us to transform the variables from group elements to dihedral angles of a tetrahedron resulting in an effective action, which coincides with the action of first order Regge calculus associated to a tetrahedron. To perform the remaining stationary point analysis, we compute its Hessian matrix and obtain the correct measure factor. Furthermore, we expand the discussion of the asymptotic formula to next to leading order terms, prove some of their properties and derive a recursion relation for the full 6j symbol.

Kami?ski, Wojciech, E-mail: wkaminsk@fuw.edu.pl [Wydzia? Fizyki, Uniwersytet Warszawski, Ho?a 69, 00-681, Warsaw (Poland) [Wydzia? Fizyki, Uniwersytet Warszawski, Ho?a 69, 00-681, Warsaw (Poland); Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario N2L 2Y5 (Canada); Max Planck Institute for Gravitational Physics, Am Mühlenberg 1, D-14476 Potsdam (Germany); Steinhaus, Sebastian, E-mail: steinhaus.sebastian@gmail.com [Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario N2L 2Y5 (Canada) [Perimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, Ontario N2L 2Y5 (Canada); Max Planck Institute for Gravitational Physics, Am Mühlenberg 1, D-14476 Potsdam (Germany)

2013-12-15T23:59:59.000Z

472

Cosmic expansion and growth histories in Galileon scalar-tensor models of dark energy  

E-Print Network [OSTI]

We study models of late-time cosmic acceleration in terms of scalar-tensor theories generalized to include a certain class of non-linear derivative interaction of the scalar field. The non-linear effect suppress the scalar-mediated force at short distances to pass solar-system tests of gravity. It is found that the expansion history until today is almost indistinguishable from that of the $\\Lambda$CDM model or some (phantom) dark energy models, but the fate of the universe depends clearly on the model parameter. The growth index of matter density perturbations is computed to show that its past asymptotic value is given by 9/16, while the value today is as small as 0.4.

Tsutomu Kobayashi

2010-05-29T23:59:59.000Z

473

Hubble expansion and structure formation in the "running FLRW model" of the cosmic evolution  

E-Print Network [OSTI]

A new class of FLRW cosmological models with time-evolving fundamental parameters should emerge naturally from a description of the expansion of the universe based on the first principles of quantum field theory and string theory. Within this general paradigm, one expects that both the gravitational Newton's coupling, G, and the cosmological term, Lambda, should not be strictly constant but appear rather as smooth functions of the Hubble rate. This scenario ("running FLRW model") predicts, in a natural way, the existence of dynamical dark energy without invoking the participation of extraneous scalar fields. In this paper, we perform a detailed study of these models in the light of the latest cosmological data, which serves to illustrate the phenomenological viability of the new dark energy paradigm as a serious alternative to the traditional scalar field approaches. By performing a joint likelihood analysis of the recent SNIa data, the CMB shift parameter, and the BAOs traced by the Sloan Digital Sky Survey,...

Grande, Javier; Basilakos, Spyros; Plionis, Manolis

2011-01-01T23:59:59.000Z

474

CP: AN INVESTIGATION OF COEFFICIENT OF THERMAL EXPANSION, DECOMPOSITION KINETICS, AND REACTION TO VARIOUS STIMULI  

SciTech Connect (OSTI)

The properties of pentaamine (5-cyano-2H-tetrazolato-N2) cobalt (III) perchlorate (CP), which was first synthesized in 1968, continues to be of interest for predicting behavior in handling, shipping, aging, and thermal cook-off situations. We report coefficient of thermal expansion (CTE) values over four specific temperature ranges, decomposition kinetics using linear heating rates, and the reaction to three different types of stimuli: impact, spark, and friction. The CTE was measured using a Thermal Mechanical Analyzer (TMA) for samples that were uniaxially compressed at 10,000 psi and analyzed over a dynamic temperature range of -20 C to 70 C. Using differential scanning calorimetry, DSC, CP was decomposed at linear heating rates of 1, 3, and 7 C/min and the kinetic triplet calculated using the LLNL code Kinetics05. Values are also reported for spark, friction, and impact sensitivity.

Weese, R K; Burnham, A K; Fontes, A T

2005-03-23T23:59:59.000Z

475

Dynamical Instability and Expansion-free Condition in $f(R,T)$ Gravity  

E-Print Network [OSTI]

Dynamical analysis of spherically symmetric collapsing star surrounding in locally anisotropic environment with expansion-free condition is presented in $f(R,T)$ gravity, where $R$ corresponds to Ricci scalar and $T$ stands for the trace of energy momentum tensor. The modified field equations and evolution equations are reconstructed in the framework of $f(R,T)$ gravty. In order to acquire the collapse equation we implement the perturbation on all matter variables and dark source components comprising the viable $f(R,T)$ model. The instability range is described in Newtonian and post-Newtonian eras by constraining the adiabatic index $\\Gamma$ to maintain viability of considered model and stable stellar configuration.

Noureen, Ifra

2015-01-01T23:59:59.000Z

476

Review of Jamaica Public Service Company, Ltd. least-cost expansion plan.  

SciTech Connect (OSTI)

Argonne National Laboratory has been asked to review the least-cost expansion plan (LCEP) of the Jamaica Public Service Company, Ltd. (JPSCo). The material that has been initially provided to Argonne included: (1) An electronic copy of the data and results from JPSCo's running the WASP electric system expansion planning model, (2) Approximately 20 pages of a document 'JPSCo Generation Expansion Plan', marked 'DRAFT 002', date unknown, and (3) The report 'JPSCo Least Cost Generation Expansion Plans, (1999-2009)', January 1999. It was noticed that the 20 pages from the 'DRAFT 002' document were different from the January 1999 report. An explanation was provided to Argonne that the excerpt was from an earlier draft and that the review should focus on the January 1999 report. Further, the electronic copy of the WASP case did not correspond to either the January 1999 report or to the 20-page excerpt. Again, the reason for these discrepancies was that the WASP case provided to Argonne was an earlier case and not the final one that was presented in the report. Based on the review of the available material, Argonne experts have prepared and submitted to the National Investment Bank of Jamaica (NIBJ) a preliminary draft report containing the initial findings, comments, questions and observations. As many of the comments and questions raised in the preliminary review needed to be discussed with the appropriate staff of JPSCo and other Jamaican experts, a 3-day mission to Jamaica was carried out by one Argonne expert (V. Koritarov) in the period July 20-23, 1999. Besides JPSCo experts, the discussions and the review of the LCEP during the mission included several experts from NIBJ, Ministry of Energy, and the Petroleum Corporation of Jamaica. Mr. Koritarov also worked with the JPSCo technical staff to reconstruct the WASP base case that was used as a basis for the January 1999 report. The first step was to verify that the results obtained after the resimulation of this case were identical to those presented in the January 1999 report. Then, in the next step, the Argonne expert and JPSCo team reviewed this case in detail and performed certain modifications and improvements of data where necessary. These modifications and data adjustments resulted in a new base case that served as a basis for further review and for the sensitivity analyses. Several sensitivity analyses were performed together with JPSCo experts and the results were discussed with the JPSCo management and other Jamaican experts at the end of the mission. Additional sensitivity analyses, as well as the cases for high and low load forecasts, were conducted by Mr. Koritarov after returning from Jamaica. The main findings of the review and issues that have been discussed with the Jamaican team can be summarized.

Koritarov, V.; Buehring, W.; Cirillo, R.; Decision and Information Sciences

2008-02-28T23:59:59.000Z

477

The thermal heat kernel expansion and the one-loop effective action of QCD at finite temperature  

E-Print Network [OSTI]

The heat kernel expansion for field theory at finite temperature is constructed. It is based on the imaginary time formalism and applies to generic Klein-Gordon operators in flat space-time. Full gauge invariance is manifest at each order of the expansion and the Polyakov loop plays an important role at any temperature. The expansion is explicitly worked out up to operators of dimension six included. The method is then applied to compute the one loop effective action of QCD at finite temperature with massless quarks. The calculation is carried out within the background field method in the $\\bar{\\text{MS}}$ scheme up to dimension six operators. Further, the action of the dimensionally reduced effective theory at high temperature is also computed to the same order. Existing calculations are reproduced and new results are obtained in the quark sector for which only partial results existed up to dimension six.

Megias, E; Salcedo, L L

2003-01-01T23:59:59.000Z

478

The thermal heat kernel expansion and the one-loop effective action of QCD at finite temperature  

E-Print Network [OSTI]

The heat kernel expansion for field theory at finite temperature is constructed. It is based on the imaginary time formalism and applies to generic Klein-Gordon operators in flat space-time. Full gauge invariance is manifest at each order of the expansion and the Polyakov loop plays an important role at any temperature. The expansion is explicitly worked out up to operators of dimension six included. The method is then applied to compute the one loop effective action of QCD at finite temperature with massless quarks. The calculation is carried out within the background field method in the $\\bar{\\text{MS}}$ scheme up to dimension six operators. Further, the action of the dimensionally reduced effective theory at high temperature is also computed to the same order. Existing calculations are reproduced and new results are obtained in the quark sector for which only partial results existed up to dimension six.

E. Megias; E. Ruiz Arriola; L. L. Salcedo

2003-12-10T23:59:59.000Z

479

Exploring Cosmological Expansion Parametrizations with the Gold SnIa Dataset  

E-Print Network [OSTI]

We use the SnIa Gold dataset to compare LCDM with 10 representative parametrizations of the recent Hubble expansion history $H(z)$. For the comparison we use two statistical tests; the usual $\\chi_{min}^2$ which is insensitive to the parametrization number of parameters, and a statistic we call the p-test which depends on both the value of $\\chi_{min}^2$ and the number $n$ of the parametrization parameters. The p-test measures the confidence level to which the parameter values corresponding to LCDM are excluded from the viewpoint of the parametrization tested. For example, for a linear equation of state parametrization $w(z)=w_0 + w_1 z$ the LCDM parameter values ($w_0=-1$, $w_1=0$) are excluded at 75% confidence level. We use a flat prior and $\\Omega_{0m}=0.3$. All parametrizations tested are consistent with the Gold dataset at their best fit. According to both statistical tests, the worst fits among the 10 parametrizations, correspond to the Chaplygin gas, the brane world and the Cardassian parametrizations. The best fit is achieved by oscillating parametrizations which can exclude the parameter values corresponding to LCDM at 85% confidence level. Even though this level of significance does not provide a statistically significant exclusion of LCDM (it is less than $2\\sigma$) and does not by itself constitute conclusive evidence for oscillations in the cosmological expansion, when combined with similar independent recent evidence for oscillations coming from the CMB and matter power spectra it becomes an issue worth of further investigation.

R. Lazkoz; S. Nesseris; L. Perivolaropoulos

2005-11-10T23:59:59.000Z

480

Hubble expansion and structure formation in the "running FLRW model" of the cosmic evolution  

E-Print Network [OSTI]

A new class of FLRW cosmological models with time-evolving fundamental parameters should emerge naturally from a description of the expansion of the universe based on the first principles of quantum field theory and string theory. Within this general paradigm, one expects that both the gravitational Newton's coupling, G, and the cosmological term, Lambda, should not be strictly constant but appear rather as smooth functions of the Hubble rate. This scenario ("running FLRW model") predicts, in a natural way, the existence of dynamical dark energy without invoking the participation of extraneous scalar fields. In this paper, we perform a detailed study of these models in the light of the latest cosmological data, which serves to illustrate the phenomenological viability of the new dark energy paradigm as a serious alternative to the traditional scalar field approaches. By performing a joint likelihood analysis of the recent SNIa data, the CMB shift parameter, and the BAOs traced by the Sloan Digital Sky Survey, we put tight constraints on the main cosmological parameters. Furthermore, we derive the theoretically predicted dark-matter halo mass function and the corresponding redshift distribution of cluster-size halos for the "running" models studied. Despite the fact that these models closely reproduce the standard LCDM Hubble expansion, their normalization of the perturbation's power-spectrum varies, imposing, in many cases, a significantly different cluster-size halo redshift distribution. This fact indicates that it should be relatively easy to distinguish between the "running" models and the LCDM cosmology using realistic future X-ray and Sunyaev-Zeldovich cluster surveys.

Javier Grande; Joan Sola; Spyros Basilakos; Manolis Plionis

2011-08-07T23:59:59.000Z

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481

Interannual variability and seasonal contribution of thermal expansion to sea level in the Persian Gulf  

Science Journals Connector (OSTI)

In an attempt to understand the causes of the sea-level seasonal cycle in the Persian Gulf, we investigated the relationships of sea-level data from 11 stations with atmospheric pressure and thermosteric level. Sea level is significantly correlated among all stations. The mean trend in sea level for the Persian Gulf is about 2.34 mm/year. The thermosteric sea-level variability is estimated from temperature profiles at one-degree grid points. Contour maps of thermosteric level show that the height due to thermal expansion is high in summer and autumn, and low during winter and spring. The monthly mean thermostric height ranges from +2.2 cm in July to ?2.1 cm in February. The major change in sea level due to the thermosteric level seems to be associated with the large change of the thermohaline circulation in the Persian Gulf. The maximum expansion occurs in summer, and the maximum contraction occurs in winter. Results of the regression analysis demonstrate that from 62% to 90.2% of the variance in the seasonal cycle is due to atmospheric pressure. The inclusion of the thermosteric sea level as a secondary forcing in the regression model improves the variance explained to 78.1–90.7%. The remaining change should be due to the halosteric effect and upwelling. Tide-gauge stations located at the Gulf's head show high correlation with Ekman vertical velocity. There are two distinct tide gauge stations in the Persian Gulf. One is found in the first cyclonic gyre and the other in the second gyre. The inclusion of Ekman upwelling to the model, improves significantly the variations explained as well, from 82.3% to 91.9%.

F. Hosseinibalam; S. Hassanzadeh; A. Kiasatpour

2007-01-01T23:59:59.000Z

482

Theory and tests of two-phase turbines  

SciTech Connect (OSTI)

Two-phase turbines open the possibility of new types of power cycles operating with extremely wet mixtures of steam and water, organic fluids, or immiscible liquids and gases. Possible applications are geothermal power, waste-heat recovery, refrigerant expansion, solar conversion, transportation turbine engines, and engine bottoming cycles. A theoretical model for two-phase impulse turbines was developed. Apparatus was constructed for testing one- and two-stage turbines (using speed decrease from stage to stage). Turbines were tested with water-and-nitrogen mixtures and Refrigerant 22. Nozzle efficiencies were 0.78 (measured) and 0.72 (theoretical) for water-and-nitrogen mixtures at a water/nitrogen mixture ratio of 68, by mass; and 0.89 (measured) and 0.84 (theoretical) for Refrigerant 22 expanding from 0.02 quality to 0.28 quality. Blade efficiencies (shaft power before windage and bearing loss divided by nozzle jet power) were 0.63 (measured) and 0.71 (theoretical) for water-and-nitrogen mixtures and 0.62 (measured) and 0.63 (theoretical) for Refrigerant 22 with a single-stage turbine, and 0.70 (measured) and 0.85 (theoretical) for water-and-nitrogen mixtures with a two-stage turbine.

Elliot, D.G.

1982-03-15T23:59:59.000Z

483

Slow expansion of the shell of the recurrent nova T Pyxidis and detection of a faint extended envelope  

SciTech Connect (OSTI)

New H-alpha narrow-based CCD imaging of the recurrent nova T Pyxidis and the detection of a very faint, extended H-alpha halo surrounding the already known shell are reported. A forbidden O III image containing an emitting shell with a morphology different from that of the H-alpha shell is presented, and measurements of the H-alpha shell expansion are reported which rule out the 1966 eruption date for the shell origin, assuming uniform expansion. It is proposed that the observed shell consists of slowly moving, solar abundance ejecta which are photoionized. 18 references.

Shara, M.M.; Moffat, A.F.J.; Williams, R.E.; Cohen, J.G.

1989-02-01T23:59:59.000Z

484

Advanced Methods for Incorporating Solar Energy Technologies into Electric Sector Capacity-Expansion Models: Literature Review and Analysis  

SciTech Connect (OSTI)

Because solar power is a rapidly growing component of the electricity system, robust representations of solar technologies should be included in capacity-expansion models. This is a challenge because modeling the electricity system--and, in particular, modeling solar integration within that system--is a complex endeavor. This report highlights the major challenges of incorporating solar technologies into capacity-expansion models and shows examples of how specific models address those challenges. These challenges include modeling non-dispatchable technologies, determining which solar technologies to model, choosing a spatial resolution, incorporating a solar resource assessment, and accounting for solar generation variability and uncertainty.

Sullivan, P.; Eurek, K.; Margolis, R.

2014-07-01T23:59:59.000Z

485

Effect of Optical Disorder and Single Defects on the Expansion of a Bose-Einstein Condensate in a One-Dimensional Waveguide  

SciTech Connect (OSTI)

We investigate the one-dimensional expansion of a Bose-Einstein condensate in an optical guide in the presence of a random potential created with optical speckles. With the speckle the expansion of the condensate is strongly inhibited. A detailed investigation has been carried out varying the experimental conditions and checking the expansion when a single optical defect is present. The experimental results are in good agreement with numerical calculations based on the Gross-Pitaevskii equation.

Fort, C.; Fallani, L.; Guarrera, V.; Lye, J.E.; Inguscio, M. [LENS, Dipartimento di Fisica and INFM, Universita di Firenze, via Nello Carrara 1, I-50019 Sesto Fiorentino, FI (Italy); Modugno, M. [LENS, Dipartimento di Matematica Applicata, Universita di Firenze and BEC-INFM Center, Universita di Trento, Povo (Italy); Wiersma, D.S. [LENS, Dipartimento di Fisica and INFM, Universita di Firenze, via Nello Carrara 1, I-50019 Sesto Fiorentino, FI (Italy); INFM-MATIS, Catania (Italy)

2005-10-21T23:59:59.000Z

486

Crystal structures and thermal expansion of -MgSO4 and -MgSO4 from 4.2 to 300 K by neutron powder diffraction  

Science Journals Connector (OSTI)

Powder neutron refinements of two MgSO4 polymorphs are presented, and their highly anisotropic thermal expansivity is analysed using a Debye model.

Fortes, A.D.

2007-07-13T23:59:59.000Z

487

SNMR pulse sequence phase cycling  

DOE Patents [OSTI]

Technologies applicable to SNMR pulse sequence phase cycling are disclosed, including SNMR acquisition apparatus and methods, SNMR processing apparatus and methods, and combinations thereof. SNMR acquisition may include transmitting two or more SNMR pulse sequences and applying a phase shift to a pulse in at least one of the pulse sequences, according to any of a variety cycling techniques. SNMR processing may include combining SNMR from a plurality of pulse sequences comprising pulses of different phases, so that desired signals are preserved and indesired signals are canceled.

Walsh, David O; Grunewald, Elliot D

2013-11-12T23:59:59.000Z

488

Property:GEADevelopmentPhase | Open Energy Information  

Open Energy Info (EERE)

GEADevelopmentPhase GEADevelopmentPhase Jump to: navigation, search Property Name GEADevelopmentPhase Property Type Page Description GEA Development Phase, as characterized by their Annual U.S. Geothermal Power Production and Development Report. See GEA_Development_Phases Allows Values Phase I - Resource Procurement and Identification;Phase II - Resource Exploration and Confirmation;Phase III - Permitting and Initial Development;Phase IV - Resource Production and Power Plant Construction Subproperties This property has the following 77 subproperties: A Abraham Hot Springs Geothermal Area Adak Geothermal Area Akun Strait Geothermal Area Akutan Fumaroles Geothermal Area Alum Geothermal Area Alvord Hot Springs Geothermal Area Amedee Geothermal Area Arrowhead Hot Springs Geothermal Area

489

Generalized Chaplygin gas, accelerated expansion, and dark-energy-matter unification  

Science Journals Connector (OSTI)

We consider the scenario emerging from the dynamics of a generalized Born-Infeld theory. The equation of state describing this system is given in terms of the energy density ? and pressure p by the relationship p=-A/??, where A is a positive constant and 0phase dominated by nonrelativistic matter to a phase dominated by a cosmological constant via an intermediate period where the effective equation of state is given by p=??.

M. C. Bento; O. Bertolami; A. A. Sen

2002-08-14T23:59:59.000Z

490

Phase projection using three satellites  

E-Print Network [OSTI]

This study seeks to investigate various techniques used in Interferometric Synthetic Aperture Radar (InSAR) during the phase unwrapping process and the noise filtering step. In particular, as intuition would follow, we ...

Yeung, Michael C. (Michael Chi-Hang)

2007-01-01T23:59:59.000Z

491

Agenda Phase 2 Industry Day  

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

JCTD Deputy Transition Manager, NAVFAC EXWC 11:00 - 11:15 Ft. Carson Sustainability and Net Zero Plan and Successes Hal Alguire, Director DPW 11:15 - 11:30 Phase 3, Future plans...

492

Precision digital pulse phase generator  

DOE Patents [OSTI]

A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code. 2 figs.

McEwan, T.E.

1996-10-08T23:59:59.000Z

493

Phase retrieval with prior information  

Science Journals Connector (OSTI)

An algorithm for phase retrieval with Bayesian statistics is discussed. It is shown how the statistics of Kolmogorov turbulence can be used to compute the likelihood for a particular...

Irwan, R; Lane, R G

1998-01-01T23:59:59.000Z

494

Gas-phase chemical dynamics  

SciTech Connect (OSTI)

Research in this program is directed towards the spectroscopy of small free radicals and reactive molecules and the state-to-state dynamics of gas phase collision, energy transfer, and photodissociation phenomena. Work on several systems is summarized here.

Weston, R.E. Jr.; Sears, T.J.; Preses, J.M. [Brookhaven National Laboratory, Upton, NY (United States)

1993-12-01T23:59:59.000Z

495

Phase-Transfer-Catalyzed Reductions  

Science Journals Connector (OSTI)

Phase-transfer catalysis (PTC) procedures that have been developed for use with sodium borohydride, lithiu