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Note: This page contains sample records for the topic "fundamental thermodynamic parameters" from the National Library of EnergyBeta (NLEBeta).
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1

Extracting the fundamental parameters  

E-Print Network (OSTI)

If supersymmetry is discovered at the LHC, the extraction of the fundamental parameters will be a formidable task. In such a system where measurements depend on different combinations of the parameters in a highly correlated system, the identification of the true parameter set in an efficient way necessitates the development and use of sophisticated methods. A rigorous treatment of experimental and theoretical errors is necessary to determine the precision of the measurement of the fundamental parameters. The techniques developed for this endeavor can also be applied to similar problems such as the determination of the Higgs boson couplings at the LHC.

Dirk Zerwas

2009-09-30T23:59:59.000Z

2

Status of the Fundamental Laws of Thermodynamics  

E-Print Network (OSTI)

We describe recent progress towards deriving the Fundamental Laws of thermodynamics (the 0th, 1st and 2nd Law) from nonequilibrium quantum statistical mechanics in simple, yet physically relevant models. Along the way, we clarify some basic thermodynamic notions and discuss various reversible and irreversible thermodynamic processes from the point of view of quantum statistical mechanics.

Walid K. Abou Salem; Juerg Froehlich

2006-04-27T23:59:59.000Z

3

Status of the Fundamental Laws of Thermodynamics  

E-Print Network (OSTI)

We describe recent progress towards deriving the Fundamental Laws of thermodynamics (the 0 th,1 st, and 2 nd Law) from nonequilibrium quantum statistical mechanics in simple, yet physically relevant models. Along the way, we clarify some basic thermodynamic notions and discuss various reversible and irreversible thermodynamic processes from the point of view of quantum statistical mechanics. 1

Walid K. Abou Salem; Jürg Fröhlich

2006-01-01T23:59:59.000Z

4

Fundamentals: Thermodynamics, Phase Equilibria, and Kinetics  

Science Conference Proceedings (OSTI)

Mar 14, 2012 ... Development of cavity under industrial conditions has also been simulated. ... Vacuum Distillation Refining of Crude Tin - Thermodynamics ...

5

Fundamental Parameters and Chemical Composition of Arcturus  

E-Print Network (OSTI)

We derive a self-consistent set of atmospheric parameters and abundances of 17 elements for the red giant star Arcturus: Teff = 4286+/-30 K, logg = 1.66+/-0.05, and [Fe/H] = -0.52+/-0.04. The effective temperature was determined using model atmosphere fits to the observed spectral energy distribution from the blue to the mid-infrared (0.44 to 10 um). The surface gravity was calculated using the trigonometric parallax of the star and stellar evolution models. A differential abundance analysis relative to the solar spectrum allowed us to derive iron abundances from equivalent width measurements of 37 FeI and 9 FeII lines, unblended in the spectra of both Arcturus and the Sun; the [Fe/H] value adopted is derived from FeI lines. We also determine the mass, radius, and age of Arcturus: M = 1.08+/-0.06 Msun, R = 25.4+/-0.2 Rsun, and t = 7.1(+1.5/-1.2) Gyr. Finally, abundances of the following elements are measured from an equivalent width analysis of atomic features: C, O, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, ...

Ramirez, I

2011-01-01T23:59:59.000Z

6

Physically Retrieving Cloud and Thermodynamic Parameters from Ultraspectral IR Measurements  

Science Conference Proceedings (OSTI)

A physical inversion scheme has been developed dealing with cloudy as well as cloud-free radiance observed with ultraspectral infrared sounders to simultaneously retrieve surface, atmospheric thermodynamic, and cloud microphysical parameters. A ...

Daniel K. Zhou; William L. Smith Sr.; Xu Liu; Allen M. Larar; Stephen A. Mango; Hung-Lung Huang

2007-03-01T23:59:59.000Z

7

Fundamental Thermodynamics of Actinide-Bearing Mineral Waste Forms - Final Report  

Science Conference Proceedings (OSTI)

The end of the Cold War raised the need for the technical community to be concerned with the disposition of excess nuclear weapon material. The plutonium will either be converted into mixed-oxide fuel for use in nuclear reactors or immobilized in glass or ceramic waste forms and placed in a repository. The stability and behavior of plutonium in the ceramic materials as well as the phase behavior and stability of the ceramic material in the environment is not well established. In order to provide technically sound solutions to these issues, thermodynamic data are essential in developing an understanding of the chemistry and phase equilibria of the actinide-bearing mineral waste form materials proposed as immobilization matrices. Mineral materials of interest include zircon, zirconolite, and pyrochlore. High temperature solution calorimetry is one of the most powerful techniques, sometimes the only technique, for providing the fundamental thermodynamic data needed to establish optimum material fabrication parameters, and more importantly understand and predict the behavior of the mineral materials in the environment. The purpose of this project is to experimentally determine the enthalpy of formation of actinide orthosilicates, the enthalpies of formation of actinide substituted zirconolite and pyrochlore, and develop an understanding of the bonding characteristics and stabilities of these materials.

Williamson, Mark A.; Ebbinghaus, Bartley B.; Navrotsky, Alexandra

2001-03-01T23:59:59.000Z

8

DOE Fundamentals Handbook: Thermodynamics, Heat Transfer, and Fluid Flow, Volume 1  

Science Conference Proceedings (OSTI)

The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of the thermal sciences. The handbook includes information on thermodynamics and the properties of fluids; the three modes of heat transfer -- conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility fluid systems.

Not Available

1992-06-01T23:59:59.000Z

9

DOE Fundamentals Handbook: Thermodynamics, Heat Transfer, and Fluid Flow, Volume 2  

Science Conference Proceedings (OSTI)

The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of the thermal sciences. The handbook includes information on thermodynamics and the properties of fluids; the three modes of heat transfer -- conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility fluid systems.

Not Available

1992-06-01T23:59:59.000Z

10

DOE Fundamentals Handbook: Thermodynamics, Heat Transfer, and Fluid Flow, Volume 3  

SciTech Connect

The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of the thermal sciences. The handbook includes information on thermodynamics and the properties of fluids; the three modes of heat transfer -- conduction, convection, and radiation; and fluid flow, and the energy relationships in fluid systems. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility fluid systems.

Not Available

1992-06-01T23:59:59.000Z

11

Fundamental Chemistry And Thermodynamics Of Hydrothermal Oxidation Processes  

DOE Green Energy (OSTI)

Hydrothermal oxidation (HTO) is a promising technology for the treatment of aqueous-fluid hazardous and mixed waste streams. Waste streams identified as likely candidates for treatment by this technology are primarily aqueous fluids containing hazardous organic compounds, and often containing inorganic compounds including radioisotopes (mixed wastes). These wastes are difficult and expensive to treat by conventional technologies (e.g. incineration) due to their high water content; in addition, incineration can lead to concerns related to stack releases. An especially attractive potential advantage of HTO over conventional treatment methods is the total containment of all reaction products within the overall system. The potential application of hydrothermal oxidation (HTO) technology for the treatment of DOE hazardous or mixed wastes has been uncertain due to concerns about safe and efficient operation of the technology. In principle, aqueous DOE wastes, including hazardous an d mixed waste, can be treated with this technology. Oxidation reactions are carried out in the aqueous phase at high temperatures ({approx}600 C), effectively converting organic waste constituents to nonhazardous materials (e.g., CO2). Inorganic materials which become insoluble in supercritical water may precipitate as scales adhering to components of the reactor, limiting reactor availability and necessitating frequent cleaning of the system. Also, most hazardous organic compounds contain heteroatoms (other than carbon, hydrogen, and oxygen). These heteroatoms, including halides (F, Cl, Br, I), sulfur, phosphorus, and some nitrogen groups, form strong mineral acids on oxidation of the organic compounds, resulting in a solution having low pH and high oxidation potential. This combination, in conjunction with the high temperatures and high fluid densities attained in both the heating and cooling regions of an HTO reactor, can lead to corrosion of structural materials (usually metal s) anticipated for use in HTO reactor construction. Methods have been suggested for mitigating the problems arising from the production of mineral acids and insoluble solids in HTO processes (Barnes et al., 1993). Previous work in this Laboratory centered on the problems arising from the presence of corrosive or insoluble inorganic compounds in HTO fluids (Simonson et al., 1993, 1994, 1995). However, significant gaps in our knowledge of process chemistry remained at the initiation of this project. It was not possible to determine accurately the properties of coexisting fluid phases; the solubilities of radioactive components of mixed wastes were unknown at high temperatures; and molecular level understanding of interparticle interactions was needed for reliable extrapolation of phenomenological equations for solution behavior beyond the range of experimental results. The present project was undertaken to address these deficiencies. The project was undertaken to provide fundamental information needed to support deployment decisions related to HTO technology, and no innovations in the technology per se were anticipated. Rather, the innovations of this project involved applying new or existing experimental and modeling approaches to studies of aqueous inorganic reactions and properties under the rigorous anticipated HTO operating conditions. This work was made possible in part through the support of researchers at ORNL and the University of Tennessee, Knoxville, by the Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences of the Department of Energy. This support has allowed significant, unique experimental and 2 computational resources to be developed for studies of aqueous solution chemistry at high temperatures and pressures.

Simonson, J.M.

2001-12-31T23:59:59.000Z

12

Molecular-level Thermodynamic and Kinetic Parameters for the Self-assembly of Apoferritin  

E-Print Network (OSTI)

Molecular-level Thermodynamic and Kinetic Parameters for the Self-assembly of Apoferritin Molecules at the molecular level the processes responsible for crystal growth. To evaluate the governing thermodynamic and the molecular-level thermodynamic and kinetic parameters determined here. We found that step growth velocity

Vekilov, Peter

13

An electromagnetic and thermodynamic lumped parameter model of an explosively driven regenerative magnetohydrodynamic generator  

DOE Green Energy (OSTI)

The objective of this research is to develop a simple, yet accurate, lumped parameter mathematical model for an explosively driven magnetohydrodynamic generator that can predict the pulse power variables of voltage and current from startup through regenerative operation. The inputs to the model will be the plasma properties entering the generator as predicted by the explosive shock model of Reference [1]. The strategy used was to simplify electromagnetic and thermodynamic three dimensional effects into a zero dimensional model. The model will provide a convenient tool for researchers to optimize designs to be used in pulse power applications. The model is validated using experimental data of Reference [1]. An overview of the operation of the explosively driven generator is first presented. Then a simplified electrical circuit model that describes basic performance of the device is developed. Then a lumped parameter model that incorporates the coupled electromagnetic and thermodynamic effects that govern generator performance is described and developed. The model is based on fundamental physical principles and parameters that were either obtained directly from design data or estimated from experimental data. The model was used to obtain parameter sensitivities and predict beyond the limits observed in the experiments to the levels desired by the potential Department of Defense sponsors. The model identifies process limitations that provide direction for future research.

Morrison, J.L.

1992-12-01T23:59:59.000Z

14

DOE-HDBK-1012/3-92; DOE Fundamentals Handbook Thermodynamics, Heat Transfer, and Fluid Flow Volume 3 of 3  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3-92 3-92 JUNE 1992 DOE FUNDAMENTALS HANDBOOK THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW Volume 3 of 3 U.S. Department of Energy FSC-6910 Washington, D.C. 20585 Distribution Statement A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information. P. O. Box 62, Oak Ridge, TN 37831; prices available from (615) 576- 8401. FTS 626-8401. Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Order No. DE92019791 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW Rev. 0 HT ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was

15

DOE-HDBK-1012/2-92; DOE Fundamentals Handbook Thermodynamics, Heat Transfer, and Fluid Flow Volume 2 of 3  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2-92 2-92 JUNE 1992 DOE FUNDAMENTALS HANDBOOK THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW Volume 2 of 3 U.S. Department of Energy FSC-6910 Washington, D.C. 20585 Distribution Statement A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information. P. O. Box 62, Oak Ridge, TN 37831; prices available from (615) 576- 8401. FTS 626-8401. Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Order No. DE92019790 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW Rev. 0 HT ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was

16

DOE-HDBK-1012/1-92; DOE Fundamentals Handbook Thermodynamics, Heat Transfer, and Fluid Flow Volume 1 of 3  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1-92 1-92 JUNE 1992 DOE FUNDAMENTALS HANDBOOK THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW Volume 1 of 3 U.S. Department of Energy FSC-6910 Washington, D.C. 20585 Distribution Statement A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information. P. O. Box 62, Oak Ridge, TN 37831; (615) 576-8401. Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Order No. DE92019789 THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW Rev. 0 HT ABSTRACT The Thermodynamics, Heat Transfer, and Fluid Flow Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance

17

Thermodynamic  

Science Conference Proceedings (OSTI)

Directory of Accredited Laboratories. CALIBRATION LABORATORIES. Thermodynamic. Listed below are all laboratories ...

2013-09-13T23:59:59.000Z

18

Thermodynamic  

Science Conference Proceedings (OSTI)

*. Bookmark and Share. Thermodynamic Quantities. Fees for services are located directly below the technical contacts for each service category link. ...

2013-04-09T23:59:59.000Z

19

Exploring the role of model parameters and regularization procedures in the thermodynamics of the PNJL model  

E-Print Network (OSTI)

The equation of state and the critical behavior around the critical end point are studied in the context of the Polyakov--Nambu--Jona--Lasinio model. We prove that a convenient choice of the model parameters is crucial to get the correct description of isentropic trajectories. The physical relevance of the effects of the regularization procedure is insured by the agreement with general thermodynamic requirements. The results are compared with simple thermodynamic expectations and lattice data.

M. C. Ruivo; Pedro Costa; H. Hansen; C. A. de Sousa

2010-01-18T23:59:59.000Z

20

Thermodynamics  

Science Conference Proceedings (OSTI)

Mar 13, 2012 ... Thermodynamic Modeling of Peirce-Smith Converter Slag at the Chagres Smelter, Chile: N Cardona1; P.J. Mackey2; P. Coursol3; R. Parada4; ...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

A Fuzzy Logic Method for Lightning Prediction Using Thermodynamic and Kinematic Parameters from Radio Sounding Observations in South Korea  

Science Conference Proceedings (OSTI)

Lightning is one of the most troubling weather phenomena for weather forecasters at space centers. In this study, proximity sounding and lightning data were used to evaluate the utility of thermodynamic and kinematic parameters for forecasting ...

Bongjae Kuk; Hongil Kim; Jongsung Ha; Hyokeun Lee; Gyuwon Lee

2012-02-01T23:59:59.000Z

22

How parameters and regularization affect the Polyakov-Nambu-Jona-Lasinio model phase diagram and thermodynamic quantities  

SciTech Connect

We explore the phase diagram and the critical behavior of QCD thermodynamic quantities in the context of the so-called Polyakov-Nambu-Jona-Lasinio model. We show that this improved field theoretical model is a successful candidate for studying the equation of state and the critical behavior around the critical endpoint. We argue that a convenient choice of the model parameters is crucial to get the correct description of isentropic trajectories. The effects of the regularization procedure in several thermodynamic quantities is also analyzed. The results are compared with simple thermodynamic expectations and lattice data.

Costa, P. [Centro de Fisica Computacional, Departamento de Fisica, Universidade de Coimbra, P-3004-516 Coimbra (Portugal) and E.S.T.G., Instituto Politecnico de Leiria, Morro do Lena-Alto do Vieiro, 2411-901 Leiria (Portugal); Hansen, H. [IPNL, Universite de Lyon/Universite Lyon 1, CNRS/IN2P3, 4 rue E.Fermi, F-69622 Villeurbanne Cedex (France); Ruivo, M. C.; Sousa, C. A. de [Centro de Fisica Computacional, Departamento de Fisica, Universidade de Coimbra, P-3004-516 Coimbra (Portugal)

2010-01-01T23:59:59.000Z

23

Fundamental Parameters of the Milky Way Galaxy Based on VLBI astrometry  

E-Print Network (OSTI)

We present analyses to determine the fundamental parameters of the Galaxy based on VLBI astrometry of 52 Galactic maser sources obtained with VERA, VLBA and EVN. We model the Galaxy's structure with a set of parameters including the Galaxy center distance R_0, the angular rotation velocity at the LSR Omega_0, mean peculiar motion of the sources with respect to Galactic rotation (U_src, V_src, W_src), rotation-curve shape index, and the V component of the Solar peculiar motions V_sun. Based on a Markov chain Monte Carlo method, we find that the Galaxy center distance is constrained at a 5% level to be R_0 = 8.05 +/- 0.45 kpc, where the error bar includes both statistical and systematic errors. We also find that the two components of the source peculiar motion U_src and W_src are fairly small compared to the Galactic rotation velocity, being U_src = 1.0 +/- 1.5 km/s and W_src = -1.4 +/- 1.2 km/s. Also, the rotation curve shape is found to be basically flat between Galacto-centric radii of 4 and 13 kpc. On the o...

Honma, Mareki; Ando, Kazuma; Bushimata, Takeshi; Choi, Yoon Kyung; Handa, Toshihiro; Hirota, Tomoya; Imai, Hiroshi; Jike, Takaaki; Kim, Mi Kyoung; Kameya, Osamu; Kawaguchi, Noriyuki; Kobayashi, Hideyuki; Kurayama, Tomoharu; Kuji, Seisuke; Matsumoto, Naoko; Manabe, Seiji; Miyaji, Takeshi; Motogi, Kazuhito; Nakagawa, Akiharu; Nakanishi, Hiroyuki; Niinuma, Notaro; Oh, Chung Sik; Omodaka, Toshihiro; Oyama, Tomoaki; Sakai, Nobuyuki; Sato, Katsuhisa; Sato, Mayumi; Shibata, Katsunori; Shiozaki, Satoshi; Sunada, Kazuyoshi; Tamura, Yoshiaki; Ueno, Yuji; Yamauchi, Aya

2012-01-01T23:59:59.000Z

24

Fundamental Guided Wave Metrology  

Science Conference Proceedings (OSTI)

Fundamental Guided Wave Metrology. Summary: ... The program is focused on fundamental measurement research for microwave parameters. ...

2010-10-05T23:59:59.000Z

25

A Case for Including Atmospheric Thermodynamic Variables in Wind Turbine Fatigue Loading Parameter Identification  

DOE Green Energy (OSTI)

This paper makes the case for establishing efficient predictor variables for atmospheric thermodynamics that can be used to statistically correlate the fatigue accumulation seen on wind turbines. Recently, two approaches to this issue have been reported. One uses multiple linear-regression analysis to establish the relative causality between a number of predictors related to the turbulent inflow and turbine loads. The other approach, using many of the same predictors, applies the technique of principal component analysis. An examination of the ensemble of predictor variables revealed that they were all kinematic in nature; i.e., they were only related to the description of the velocity field. Boundary-layer turbulence dynamics depends upon a description of the thermal field and its interaction with the velocity distribution. We used a series of measurements taken within a multi-row wind farm to demonstrate the need to include atmospheric thermodynamic variables as well as velocity-related ones in the search for efficient turbulence loading predictors in various turbine-operating environments. Our results show that a combination of vertical stability and hub-height mean shearing stress variables meet this need over a period of 10 minutes.

Kelley, N. D.

1999-08-02T23:59:59.000Z

26

Thermodynamics and Diffusion  

Science Conference Proceedings (OSTI)

Feb 28, 2011 ... Hume-Rothery Symposium Thermodynamics and Diffusion Coupling ... be quite fundamental and often it cannot be distinguished from “basic” ...

27

Thermodynamic Adjustment Parameters in the Betts–Miller Scheme of Convection  

Science Conference Proceedings (OSTI)

The sensitivity of the prediction of a monsoon depression to the adjustment parameters in a Betts–Miller scheme of deep convection is examined and an optimum parameter set is identified for the monsoon depression. For this purpose, a number of ...

S. S. Vaidya; S. S. Singh

1997-12-01T23:59:59.000Z

28

Thermodynamic cost of acquiring information  

E-Print Network (OSTI)

Connections between information theory and thermodynamics have proven to be very useful to establish bounding limits for physical processes. Ideas such as Landauer's erasure principle and information assisted work extraction have greatly contributed not only to enlarge our understanding about the fundamental limits imposed by nature, but also to enlighten the path for practical implementations of information processing devices. The intricate information-thermodynamics relation also entails a fundamental limit on parameter estimation, establishing a thermodynamic cost for information acquisition. More specifically, we show that the amount of information that can be encoded in a physical system (and consequently extracted) by means of any process is limited by the dissipated work during the implementation of the process. This includes a thermodynamic trade-off for information acquisition. Likewise, any information acquisition process is ultimately limited by the second law of thermodynamics. Such a trade-off may find applications in several areas of knowledge, since parameter estimation lies in the building basis of all natural sciences and several technological applications, such as metrology.

Kaonan Micadei; Roberto M. Serra; Lucas C. Celeri

2012-11-02T23:59:59.000Z

29

a BLACK HOLES AND FUNDAMENTAL PHYSICS  

E-Print Network (OSTI)

We give a review of classical, thermodynamic and quantum properties of black holes relevant to fundamental physics. 1.

José P. S. Lemos; Centro Multidisciplinar; Astrofísica Centra

2005-01-01T23:59:59.000Z

30

Global survey of star clusters in the Milky Way I. The pipeline and fundamental parameters in the second quadrant  

E-Print Network (OSTI)

Aims: On the basis of the PPMXL star catalogue we performed a survey of star clusters in the second quadrant of the Milky Way. Methods: From the PPMXL catalogue of positions and proper motions we took the subset of stars with near-infrared photometry from 2MASS and added the remaining 2MASS stars without proper motions (called 2MAst, i.e. 2MASS with astrometry). We developed a data-processing pipeline including interactive human control of a standardised set of multi-dimensional diagrams to determine kinematic and photometric membership probabilities for stars in a cluster region. The pipeline simultaneously produced the astrophysical parameters of a cluster. From literature we compiled a target list of presently known open and globular clusters, cluster candidates, associations, and moving groups. From established member stars we derived spatial parameters (coordinates of centres and radii of the main morphological parts of clusters) and cluster kinematics (average proper motions and sometimes radial velocit...

Kharchenko, N V; Schilbach, E; Röser, S; Scholz, R -D

2012-01-01T23:59:59.000Z

31

Fundamentals - TMS  

Science Conference Proceedings (OSTI)

"The Fundamentals of Electrometallurgy in Aqueous Media" (Overview), M.L. Free, May ... "The Fundamentals of Mechanochemical Processing" (Overview), P.G. ...

32

The call to adopt a nominal set of astrophysical parameters and constants to improve the accuracy of fundamental physical properties of stars  

E-Print Network (OSTI)

The increasing precision of astronomical observations of stars and stellar systems is gradually getting to a level where the use of slightly different values of the solar mass, radius and luminosity, as well as different values of fundamental physical constants may lead to measurable systematic differences in the determination of basic physical properties. An equivalent issue with an inconsistent value of the speed of light was resolved by adopting a nominal value that is constant and has no error associated with it. Analogously, we suggest that the systematic error in stellar parameters may be avoided if the following two conditions are met: (1) we deprecate the usage of solar quantities Msun, Rsun, and Lsun as units and replace them by the nominal values that are by definition exact and expressed in SI units: 1 MnomSun = 1.988416 x 10^{30} kg, 1 RnomSun = 6.95508 x 10^8 m, and 1 LnomSun = 3.846 x 10^{26} W; and (2) each study containing a determination of fundamental properties of stars or stellar systems s...

Harmanec, Petr

2011-01-01T23:59:59.000Z

33

Solvation Thermodynamics  

Science Conference Proceedings (OSTI)

... a consistent, high-quality compilation of solvation thermodynamics data for a ... the solvation process to permit solvation thermodynamic quantities to ...

2013-02-26T23:59:59.000Z

34

Ab Initio Thermodynamics: Fundamentals and Applications  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, The 8th Pacific Rim International Congress on Advanced Materials and Processing. Symposium, L. Modeling and Simulation of  ...

35

Fundamental Thermodynamics of Aqueous Carbon Dioxide Systems  

Science Conference Proceedings (OSTI)

Dissolution Kinetics of Steelmaking Slag and Its Promotion for the Growth of Algae · Electrodeposition of PbTe Thermoelectric Materials in NaOH Solutions.

36

THERMODYNAMIC FUNDAMENTALS FOR THE PYROLYSIS OF REFUSE  

E-Print Network (OSTI)

. In compliance with continuous adjustment to state-of-the-art flue gas cleaning technology the Spittelau Thermal Waste Treatment Plant was equipped with a flue gas scrubbing system in 1986/89, as well as an ultra delivery #12;The thermal waste treatment plant consists of two incinera- tion lines, each with a flue gas

Columbia University

37

Complexation of Gluconate with Uranium(VI) in Acidic Solutions: Thermodynamic Study with Structural Analysis  

E-Print Network (OSTI)

G. G. , Wang, Z. , “Thermodynamic and spectroscopic studiesDetermination of the thermodynamic quantities of uranium(82, 483. Table 1. Thermodynamic parameters of gluconate

Zhang, Zhicheng

2009-01-01T23:59:59.000Z

38

Quantum Thermodynamics  

E-Print Network (OSTI)

Quantum thermodynamics addresses the emergence of thermodynamical laws from quantum mechanics. The link is based on the intimate connection of quantum thermodynamics with the theory of open quantum systems. Quantum mechanics inserts dynamics into thermodynamics giving a sound foundation to finite-time-thermodynamics. The emergence of the 0-law I-law II-law and III-law of thermodynamics from quantum considerations is presented. The emphasis is on consistence between the two theories which address the same subject from different foundations. We claim that inconsistency is the result of faulty analysis pointing to flaws in approximations.

Ronnie Kosloff

2013-05-10T23:59:59.000Z

39

Relativistic thermodynamics  

E-Print Network (OSTI)

Thermodynamics, when formulated as a dynamic action principle, allows a simple and effective integration into the General Theory of Gravitation.

Fronsdal, Christian

2011-01-01T23:59:59.000Z

40

Relativistic thermodynamics  

E-Print Network (OSTI)

Thermodynamics, when formulated as a dynamic action principle, allows a simple and effective integration into the General Theory of Gravitation.

Christian Fronsdal

2011-06-12T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

TRADEMARK FUNDAMENTALS  

Science Conference Proceedings (OSTI)

WEB: http://www.grr.com E-MAIL: info@grr.com. TRADEMARK FUNDAMENTALS . Materials Science & Technology 2004. September 28, 2004. New Orleans, LA.

42

Electrochemical thermodynamic measurement system  

DOE Patents (OSTI)

The present invention provides systems and methods for accurately characterizing thermodynamic and materials properties of electrodes and electrochemical energy storage and conversion systems. Systems and methods of the present invention are configured for simultaneously collecting a suite of measurements characterizing a plurality of interconnected electrochemical and thermodynamic parameters relating to the electrode reaction state of advancement, voltage and temperature. Enhanced sensitivity provided by the present methods and systems combined with measurement conditions that reflect thermodynamically stabilized electrode conditions allow very accurate measurement of thermodynamic parameters, including state functions such as the Gibbs free energy, enthalpy and entropy of electrode/electrochemical cell reactions, that enable prediction of important performance attributes of electrode materials and electrochemical systems, such as the energy, power density, current rate and the cycle life of an electrochemical cell.

Reynier, Yvan (Meylan, FR); Yazami, Rachid (Los Angeles, CA); Fultz, Brent T. (Pasadena, CA)

2009-09-29T23:59:59.000Z

43

Nonequilibrium quantum statistical mechanics and thermodynamics  

E-Print Network (OSTI)

The purpose of this work is to discuss recent progress in deriving the fundamental laws of thermodynamics (0th, 1st and 2nd-law) from nonequilibrium quantum statistical mechanics. Basic thermodynamic notions are clarified and different reversible and irreversible thermodynamic processes are studied from the point of view of quantum statistical mechanics. Special emphasis is put on new adiabatic theorems for steady states close to and far from equilibrium, and on investigating cyclic thermodynamic processes using an extension of Floquet theory.

Walid K. Abou Salem

2006-01-23T23:59:59.000Z

44

Thermodynamic Irreversibility from high-dimensional Hamiltonian Chaos  

E-Print Network (OSTI)

This paper discusses the thermodynamic irreversibility realized in high-dimensional Hamiltonian systems with a time-dependent parameter. A new quantity, the irreversible information loss, is defined from the Lyapunov analysis so as to characterize the thermodynamic irreversibility. It is proved that this new quantity satisfies an inequality associated with the second law of thermodynamics. Based on the assumption that these systems possess the mixing property and certain large deviation properties in the thermodynamic limit, it is argued reasonably that the most probable value of the irreversible information loss is equal to the change of the Boltzmann entropy in statistical mechanics, and that it is always a non-negative value. The consistency of our argument is confirmed by numerical experiments with the aid of the definition of a quantity we refer to as the excess information loss. Thermodynamics formalizes a fundamental limitation of possible processes between equilibrium states. In particular, when a thermodynamic system is enclosed by adiabatic walls, the limitation is represented by, for example, a fact that, given a system in some initial state, it is not possible to lower the system’s energy by first changing some of its other extensive variables and then returning

Shin-ichi Sasa; Teruhisa S. Komatsu

1999-01-01T23:59:59.000Z

45

Thermodynamics of Fractal Universe  

E-Print Network (OSTI)

We investigate the thermodynamical properties of the apparent horizon in a fractal universe. We find that one can always rewrite the Friedmann equation of the fractal universe in the form of the entropy balance relation $ \\delta Q=T_h d{S_h}$, where $ \\delta Q $ and $ T_{h} $ are the energy flux and Unruh temperature seen by an accelerated observer just inside the apparent horizon. We find that the entropy $S_h$ consists two terms, the first one which obeys the usual area law and the second part which is the entropy production term due to nonequilibrium thermodynamics of fractal universe. This shows that in a fractal universe, a treatment with nonequilibrium thermodynamics of spacetime may be needed. We also study the generalized second law of thermodynamics in the framework of fractal universe. When the temperature of the apparent horizon and the matter fields inside the horizon are equal, i.e. $T=T_h$, the generalized second law of thermodynamics can be fulfilled provided the deceleration and the equation of state parameters ranges either as $-1 \\leq q thermodynamics can be secured in a fractal universe by suitably choosing the fractal parameter $\\beta$.

Ahmad Sheykhi; Zeinab Teimoori; Bin Wang

2012-10-29T23:59:59.000Z

46

Thermodynamic Principles  

Science Conference Proceedings (OSTI)

...A thermodynamic system that undergoes no interchange of mass (material) with its surroundings is called a closed system. A closed system, however, can interchange energy with its surroundings....

47

Entanglement Thermodynamics  

E-Print Network (OSTI)

We study entanglement entropy for an excited state by making use of the proposed holographic description of the entanglement entropy. For a sufficiently small entangling region and with reasonable identifications we find an equation between entanglement entropy and energy which is reminiscent of the first law of thermodynamics. We then suggest four statements which might be thought of as four laws of entanglement thermodynamics.

Mohsen Alishahiha; Davood Allahbakhshi; Ali Naseh

2013-05-13T23:59:59.000Z

48

Thermodynamics Research Center Group  

Science Conference Proceedings (OSTI)

Thermodynamics Research Center. Welcome. TRC supplies thermodynamic properties tables, thermophysical properties data, models, standards ...

2012-11-14T23:59:59.000Z

49

Thermodynamics Research Center - Thermophysical ...  

Science Conference Proceedings (OSTI)

Thermodynamics Research Center. TRC supplies thermodynamic properties tables, thermophysical properties data, models, standards and ...

50

Stochastic deformation of a thermodynamic symplectic structure  

E-Print Network (OSTI)

A stochastic deformation of a thermodynamic symplectic structure is studied. Gauge symmetries of thermodynamics and stochastic mechanics are revealed and gauge fields are introduced. A physical interpretation to the gauge transformations and gauge fields is given. An application of the formalism to a description of systems with distributed parameters in a local thermodynamic equilibrium is considered.

Kazinski, P O

2008-01-01T23:59:59.000Z

51

Fundamental Studies  

NLE Websites -- All DOE Office Websites (Extended Search)

in Support of GEO-SEQ LBNL's Consolidated Sequestration Research Program (CSRP) Project Number FWP ESD09-056 Tom Daley Lawrence Berkeley National Laboratory U.S. Department of Energy National Energy Technology Laboratory Carbon Storage R&D Project Review Meeting Developing the Technologies and Infrastructure for CCS August 20-22, 2013 2 Presentation Outline * Benefits and Goals of Fundamental Studies * Technical Status - Petrophysical Relationships - Geochemical Processes - Monitoring Instrumentation * Accomplishments and Summary 3 Benefit to the Program * Program goals being addressed: - Develop and validate technologies to ensure 99 percent storage permanence. - Develop technologies to improve reservoir storage efficiency while ensuring containment effectiveness

52

Quest for Environmentally-Benign Ligands for Actinide Separations: Thermodynamic, Spectroscopic, and Structural Characterization of U(VI) Complexes with Oxa-Diamide and Related Ligands  

E-Print Network (OSTI)

for Actinide Separations: Thermodynamic, Spectroscopic, andoxydiacetic acid (ODA). Thermodynamic parameters, includingThe trend in the thermodynamic stability of the complexes

Tian, Guoxin; Advanced Light Source

2009-01-01T23:59:59.000Z

53

Toward understanding the thermodynamics of TALSPEAK process. Medium effects on actinide complexation  

SciTech Connect

The ingenious combination of lactate and diethylenetriamine-N,N,N’,N”,N”-pentaacetic acid (DTPA) as an aqueous actinide-complexing medium forms the basis of the successful separation of americium and curium from lanthanides known as the TALSPEAK process. While numerous reports in the prior literature have focused on the optimization of this solvent extraction system, considerably less attention has been devoted to the understanding of the basic thermodynamic features of the complex fluids responsible for the separation. The available thermochemical information of both lactate and DTPA protonation and metal complexation reactions are representative of the behavior of these ions under idealized conditions. Our previous studies of medium effects on lactate protonation suggest that significant departures from the speciation predicted based on reported thermodynamic values should be expected in the TALSPEAK aqueous environment. Thermodynamic parameters describing the separation chemistry of this process thus require further examination at conditions significantly removed from conventional ideal systems commonly employed in fundamental solution chemistry. Such thermodynamic characterization is the key to predictive modelling of TALSPEAK. Improved understanding will, in principle, allow process technologists to more efficiently respond to off-normal conditions during large scale process operation. In this report, the results of calorimetric and potentiometric investigations of the effects of aqueous electrolytes on the thermodynamic parameters for lactate protonation and lactate complexation of americium and neodymium will be presented. Studies on the lactate protonation equilibrium will clearly illustrate distinct thermodynamic variations between strong electrolyte aqueous systems and buffered lactate environment.

Peter R Zalupski; Leigh R Martin; Ken Nash; Yoshinobu Nakamura; Masahiko Yamamoto

2009-07-01T23:59:59.000Z

54

Measuring Thermodynamic Length  

E-Print Network (OSTI)

Measuring thermodynamic length Gavin E. Crooks ? PhysicalUSA (Dated: February 5, 2008) Thermodynamic length is abetween equilibrium thermodynamic states. Among other

Crooks, Gavin E

2009-01-01T23:59:59.000Z

55

Friedmann Thermodynamics and the Geometry of the Universe  

E-Print Network (OSTI)

In a recent article we have introduced Friedmann thermodynamics, where certain geometric parameters in Friedmann models are treated like their thermodynamic counterparts (temperature, entropy, Gibbs potential etc.). This model has the advantage of allowing us to determine the geometry of the universe by thermodynamic stability arguments. In this article we review connections between thermodynamics, geometry and cosmology.

Bayin, Selcuk S

2008-01-01T23:59:59.000Z

56

Friedmann Thermodynamics and the Geometry of the Universe  

E-Print Network (OSTI)

In a recent article we have introduced Friedmann thermodynamics, where certain geometric parameters in Friedmann models are treated like their thermodynamic counterparts (temperature, entropy, Gibbs potential etc.). This model has the advantage of allowing us to determine the geometry of the universe by thermodynamic stability arguments. In this article we review connections between thermodynamics, geometry and cosmology.

Selcuk S. Bayin

2008-04-01T23:59:59.000Z

57

NONEQUILIBRIUM QUANTUM STATISTICAL MECHANICS AND THERMODYNAMICS ?  

E-Print Network (OSTI)

The purpose of this work is to discuss recent progress in deriving the fundamental laws of thermodynamics (0 th, 1 st and 2 nd-law) from nonequilibrium quantum statistical mechanics. Basic thermodynamic notions are clarified and different reversible and irreversible thermodynamic processes are studied from the point of view of quantum statistical mechanics. Special emphasis is put on new adiabatic theorems for steady states close to and far from equilibrium, and on investigating cyclic thermodynamic processes using an extension of Floquet theory. This work is based on the author’s doctoral thesis, ETH-Diss 16187.

Walid K. Abou Salem

2006-01-01T23:59:59.000Z

58

Thermodynamics and Relativity: A Message to Physics Teachers (for an easier understanding of the thermodynamic theory)  

E-Print Network (OSTI)

Whoever has to learn or to teach thermodynamics is confronted with conceptual difficulties which are specific to this field of physics ([1],[2]). It seems that they can be eliminated by inserting relativity in the thermodynamic theory. The aim of this paper is to summarize the problem and draw attention upon a fundamental point of the discussion.

Tane, Jean-Louis

2007-01-01T23:59:59.000Z

59

From mechanics to thermodynamics: an example of how to build the thermodynamics laws  

E-Print Network (OSTI)

We study a mechanical problem in which a friction force is acting on the system. We explain how to extend Newtonian mechanics to thermodynamics using the fundamental concept of state, time evolution and energy conservation. We derive the two law of thermodynamics and then apply them to significant examples.

Ferrari, Christian

2009-01-01T23:59:59.000Z

60

Thermodynamics and Relativity: A Message to Physics Teachers (for an easier understanding of the thermodynamic theory)  

E-Print Network (OSTI)

Whoever has to learn or to teach thermodynamics is confronted with conceptual difficulties which are specific to this field of physics ([1],[2]). It seems that they can be eliminated by inserting relativity in the thermodynamic theory. The aim of this paper is to summarize the problem and draw attention upon a fundamental point of the discussion.

Jean-Louis Tane

2007-11-27T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Thermodynamic Databases - TMS  

Science Conference Proceedings (OSTI)

Apr 8, 2008 ... Thermodynamic databases are developed by teams of experts critically assessing all experimental phase equilibrium and thermodynamic data.

62

Chemical Engineering & Processing Thermodynamics ...  

Science Conference Proceedings (OSTI)

... Engineering & Processing Thermodynamics Information at ... Phase Equilibrium Data (01/30 ... Connecting Thermodynamic and Dynamic Properties of ...

2010-09-24T23:59:59.000Z

63

First-principles Thermodynamics  

Science Conference Proceedings (OSTI)

Mar 4, 2013 ... Computational Thermodynamics and Kinetics: First-principles Thermodynamics Sponsored by: TMS Electronic, Magnetic, and Photonic ...

64

Thermodynamic potentials and Thermodynamic Relations in Nonextensive Thermodynamics  

E-Print Network (OSTI)

The generalized Gibbs free energy and enthalpy is derived in the framework of nonextensive thermodynamics by using the so-called physical temperature and the physical pressure. Some thermodynamical relations are studied by considering the difference between the physical temperature and the inverse of Lagrange multiplier. The thermodynamical relation between the heat capacities at a constant volume and at a constant pressure is obtained using the generalized thermodynamical potential, which is found to be different from the traditional one in Gibbs thermodynamics. But, the expressions for the heat capacities using the generalized thermodynamical potentials are unchanged.

Lina, Guo

2010-01-01T23:59:59.000Z

65

Materials Processing Fundamentals  

Science Conference Proceedings (OSTI)

Symposium, Materials Processing Fundamentals ... to be covered in the symposium are all aspects of the fundamentals, synthesis, analysis, design, monitoring, ...

66

On thermodynamic and microscopic reversibility  

E-Print Network (OSTI)

On Thermodynamic and Microscopic Reversibility Abstract. Theof the University of California. On Thermodynamic andMicroscopic Reversibility Thermodynamic reversibility The

Crooks, Gavin E.

2012-01-01T23:59:59.000Z

67

Phantom thermodynamics  

E-Print Network (OSTI)

This paper deals with the thermodynamic properties of a phantom field in a flat Friedmann-Robertson-Walker universe. General expressions for the temperature and entropy of a general dark-energy field with equation of state $p=\\omega\\rho$ are derived from which we have deduced that, whereas the temperature of a cosmic phantom fluid ($\\omegathermodynamic properties of the quantum quantum field are also considered that include a generalized Wien law and the prediction of some novel phenomena such as the stimulated absorption of phantom energy and the anti-laser effect.

Pedro F. Gonzalez-Diaz; Carmen L. Siguenza

2004-07-20T23:59:59.000Z

68

Fundamentals of preparative and nonlinear chromatography  

Science Conference Proceedings (OSTI)

The second edition of Fundamentals of Preparative and Nonlinear Chromatography is devoted to the fundamentals of a new process of purification or extraction of chemicals or proteins widely used in the pharmaceutical industry and in preparative chromatography. This process permits the preparation of extremely pure compounds satisfying the requests of the US Food and Drug Administration. The book describes the fundamentals of thermodynamics, mass transfer kinetics, and flow through porous media that are relevant to chromatography. It presents the models used in chromatography and their solutions, discusses the applications made, describes the different processes used, their numerous applications, and the methods of optimization of the experimental conditions of this process.

Guiochon, Georges A [ORNL; Felinger, Attila [ORNL; Katti, Anita [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Shirazi, Dean G [unknown

2006-02-01T23:59:59.000Z

69

DOE fundamentals handbook: Chemistry  

SciTech Connect

This handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of chemistry. This volume contains the following modules: reactor water chemistry (effects of radiation on water chemistry, chemistry parameters), principles of water treatment (purpose; treatment processes [ion exchange]; dissolved gases, suspended solids, and pH control; water purity), and hazards of chemicals and gases (corrosives [acids, alkalies], toxic compounds, compressed gases, flammable/combustible liquids).

Not Available

1993-01-01T23:59:59.000Z

70

QCD Thermodynamics  

E-Print Network (OSTI)

Recent results on QCD thermodynamics are presented. The nature of the T>0 transition is determined, which turns out to be an analytic cross-over. The absolute scale for this transition is calculated. The temperature dependent static potential is given. The results were obtained by using a Symanzik improved gauge and stout-link improved fermionic action. In order to approach the continuum limit four different sets of lattice spacings were used with temporal extensions N_t=4, 6, 8 and 10 (they correspond to lattice spacings a \\sim 0.3, 0.2, 0.15 and 0.12 fm). A new technique is presented, which --in contrast to earlier methods-- enables one to determine the equation of state at very large temperatures.

Z. Fodor

2007-11-02T23:59:59.000Z

71

Thermodynamics and Phase Transformation  

Science Conference Proceedings (OSTI)

The experimental data were used to verify and refine the thermodynamic optimization. 3:00 PM Thermodynamic Database Development for Magnesium Alloys ...

72

Thermodynamics Software/Codes - TMS  

Science Conference Proceedings (OSTI)

FORUMS > THERMODYNAMICS SOFTWARE/CODES, Replies, Views, Originator ... Thermodynamic calculations in multicomponent systems, 0, 1887, Cathy ...

73

Data Interpretation Fundamentals  

Science Conference Proceedings (OSTI)

... Unable to make Q ? K comparison Page 7. JM Butler Data Interpretation Fundamentals ... Doctrine or Dogma (why?) – A fundamental law of ...

2013-08-30T23:59:59.000Z

74

DOE Fundamentals Handbook - Ebookee  

E-Print Network (OSTI)

Mar 29, 2010 ... 300 pages | U.S. Department of Energy (June 1992) | ASIN: ... The Thermodynamics, Heat Transfer, and Fluid Flow handbook consists of three ...

75

A thermodynamic description of the Mg-Sm-Zr system  

Science Conference Proceedings (OSTI)

Combining with the thermodynamic parameters of the Sm-Zr binary systems cited from ... phase equilibria are in good agreement with the experimental data.

76

Thermodynamic Optimization of Lithia-Alumina  

SciTech Connect

The optimization of thermodynamic parameters in the Li2O-Al2O3 system using available thermodynamic and assessed phase diagram data is discussed. A procedure for obtaining a suitable associate species solution model for the liquid in this system is presented. It is shown that if the eutectic near the pure alumina composition is ignored during the optimization, the optimized thermodynamic parameters in this system result in a phase diagram that is in reasonable agreement with the experimental one. Optimized thermodynamic parameters for the associate species in the associate species liquid model and the solids in this system are provided. An optimized associate-regular solution model with a reduced number of associates in the liquid is also provided as a comparison.

Kulkarni, Nagraj S [ORNL; Besmann, Theodore M [ORNL; Spear, K. E. [Casitacalc

2008-01-01T23:59:59.000Z

77

THERMODYNAMICS AND MECHANISMS OF SINTERING  

E-Print Network (OSTI)

E. Hoge and Joseph A. Pask, "Thermodynamics of So:!.id StateJoseph A. Pask, "Thermodynamics and Geometric Considerations8419 r- ,y / ( /)~; - - I THERMODYNAMICS AND MECHANISMS OF

Pask, J.A.

2011-01-01T23:59:59.000Z

78

Thermodynamic Metrics and Optimal Paths  

E-Print Network (OSTI)

Thermodynamic metrics and optimal paths David A. Sivak ? andmanifold on the space of thermodynamic states. Within theconnection to the existing thermodynamic length formalism,

Sivak, David

2013-01-01T23:59:59.000Z

79

Thermodynamics of geothermal fluids  

DOE Green Energy (OSTI)

A model to predict the thermodynamic properties of geothermal brines, based on a minimum amount of experimental data on a few key systems, is tested. Volumetric properties of aqueous sodium chloride, taken from the literature, are represented by a parametric equation over the range 0 to 300{sup 0}C and 1 bar to 1 kbar. Density measurements at 20 bar needed to complete the volumetric description also are presented. The pressure dependence of activity and thermal properties, derived from the volumetric equation, can be used to complete an equation of state for sodium chloride solutions. A flow calorimeter, used to obtain heat capacity data at high temperatures and pressures, is described. Heat capacity measurements, from 30 to 200{sup 0}C and 1 bar to 200 bar, are used to derive values for the activity coefficient and other thermodynamic properties of sodium sulfate solutions as a function of temperature. Literature data on the solubility of gypsum in mixed electrolyte solutions have been used to evaluate model parameters for calculating gypsum solubility in seawater and natural brines. Predictions of strontium and barium sulfate solubility in seawater also are given.

Rogers, P.S.Z.

1981-03-01T23:59:59.000Z

80

The Particle Adventure | What is fundamental? | Fundamental  

NLE Websites -- All DOE Office Websites (Extended Search)

The Standard Model - What is fundamental? - Eternal questions People have long asked: "What is the world made of?" and "What holds it together?" Question: What is the name of this...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Materials Processing Fundamentals  

Science Conference Proceedings (OSTI)

About this Symposium. Meeting, 2010 TMS Annual Meeting & Exhibition. Symposium, Materials Processing Fundamentals. Sponsorship, The Minerals, Metals ...

82

Momentum Dependent Fundamental Action  

E-Print Network (OSTI)

The fundamental action is dependent on momentum. Some consequences are presented for matter waves and scalar quantum field theory.

Karl De Paepe

2005-07-26T23:59:59.000Z

83

Fundamental neutrino experiments  

E-Print Network (OSTI)

We review fundamental open problems in neutrino physics and propose two basic experiments for their possible resolution.

Ruggero Maria Santilli

2006-11-06T23:59:59.000Z

84

Computational Thermodynamics and Kinetics  

Science Conference Proceedings (OSTI)

Jul 31, 2011 ... About this Symposium. Meeting, 2012 TMS Annual Meeting & Exhibition. Symposium, Computational Thermodynamics and Kinetics.

85

Sources of Thermodynamic Data  

Science Conference Proceedings (OSTI)

...The thermodynamic data summarized in Table 2 are collected from a variety of sources. The certainty with which

86

Thermodynamics of ATP in Solution  

Science Conference Proceedings (OSTI)

Thermodynamics of ATP in Solution. Summary: ... Computations of the thermodynamics of biomolecules in solution are rare in the literature. ...

2013-02-26T23:59:59.000Z

87

The Particle Adventure | What is fundamental? | Fundamental  

NLE Websites -- All DOE Office Websites (Extended Search)

Theory of 1964 Theory of 1964 The Theory of 1964 In 1964, six theoretical physicists hypothesized a new field (like an electromagnetic field) that would permeate all of space and solve a critical problem for our understanding of the universe. Independently, other physicists were constructing a theory of the fundamental particles, eventually called the "Standard Model," that would prove to be phenomenally accurate.* These otherwise unrelated efforts turned out to be intimately interconnected. The Standard Model needed a mechanism to give fundamental particles mass. The field theory devised by Peter Higgs, Robert Brout, François Englert, Gerald Guralnik, Carl Hagen, and Thomas Kibble did just that. Photo of Francois Englert and Peter Higgs - © CERN * Experimental tests of the accuracy of some parts of the Standard Model

88

Exchange Rates and Fundamentals  

E-Print Network (OSTI)

We show analytically that in a rational expectations present-value model, an asset price manifests near–random walk behavior if fundamentals are I(1) and the factor for discounting future fundamentals is near one. We argue that this result helps explain the well-known puzzle that fundamental variables such as relative money supplies, outputs, inflation, and interest rates provide little help in predicting changes in floating exchange rates. As well, we show that the data do exhibit a related link suggested by standard models—that the exchange rate helps predict these fundamentals. The implication is that exchange rates and fundamentals are linked in a way that is broadly consistent with asset-pricing models of the exchange rate. I.

Charles Engel; Kenneth D. West

2005-01-01T23:59:59.000Z

89

Nonextensive thermodynamic relations  

E-Print Network (OSTI)

The generalized zeroth law of thermodynamics indicates that the physical temperature in nonextensive statistical mechanics is different from the inverse of the Lagrange multiplier, ?. This leads to modifications of some of thermodynamic relations for nonextensive systems. Here, taking the first law of thermodynamics and the Legendre transform structure as the basic premises, it is found that Clausius’ definition of the thermodynamic entropy has to be appropriately modified. It is shown that the definitions of specific heat and pressure remain form invariant. Thus, the thermodynamic relations proposed by Tsallis, Mendes and Plastino [Physica A 261 (1998) 534] are rectified. As an application, the classical gas model is reexamined and, in marked contrast with the previous result using the unphysical temperature, the specific heat and the equation of state are found to be similar to those in ordinary extensive thermodynamics. PACS: 05.70.-a; 05.20.-y; 05.90.+m 1

A. Plastino

2000-01-01T23:59:59.000Z

90

Thermodynamic databases - TMS  

Science Conference Proceedings (OSTI)

Apr 8, 2008 ... Fe-DATA * Ni-DATA * NiFe-Super * Ti-DATA * TiAl-DATA Citation: " Thermodynamic databases," Thermotech Sente Software. Launch Site.

91

Thermodynamics and scale relativity  

E-Print Network (OSTI)

It is shown how the fractal paths of scale relativity (following Nottale) can be introduced into a thermodynamical context (following Asadov-Kechkin).

Carroll, Robert

2011-01-01T23:59:59.000Z

92

A COMPUTATIONAL PROCEDURE TO ESTIMATE THE FUNDAMENTAL  

E-Print Network (OSTI)

of the grounding systems is to dissipate a current injection* * at an electrical substation produced A COMPUTATIONAL PROCEDURE TO ESTIMATE THE FUNDAMENTAL PARAMETERS IN GROUNDING. Abstract The grounding grid design must be made in such a way that the funda- mental parameters do

Bendito, Enrique

93

Foundations of quantum theory and thermodynamics  

Science Conference Proceedings (OSTI)

Physical reasons to support the statement that Quantum theory (Quantum Gravity in particular as well as Classical Gravity) loose applicability due to Thermodynamical effects are presented. The statement is based on several points: 1. N.Bohr requirement that measuring units must have macro size is one of common fundamentals of Quantum theory. 2. The Reference System—the base notion of Classical and Quantum theory and of any observation process as well

Victor Olkhov

1998-01-01T23:59:59.000Z

94

Fundamental Symmetries and Interactions  

E-Print Network (OSTI)

In nuclear physics numerous possibilities exist to investigate fundamental symmetries and interactions. In particular, the precise measurements of properties of fundamental fermions, searches for new interactions in ?-decays, and violations of discrete symmeties offer possibilities to search for physics beyond standard theory. Precise measurements of fundamental constants can be carried out. Low energy experiments allow to probe New Physics at mass scales far beyond the reach of present accelerators or such planned for the future and at which predicted new particles could be produced directly. 1. Fundamental Forces and Symmetries Symmetries play an important and crucial role in physics. Global symmetries give rise to conservation laws and local symmetries yield forces [ 1]. To date we know four fundamental interactions: (i) Electromagnetism, (ii) Weak Interactions, (iii) Strong Interactions, and (iv) Gravitation. These four forces are fundamental in the sense that all observed dynamical processes in physics can be traced back to one or a combination of them. Together with fundamental symmetries they from a framework on which all physical descriptions ultimately rest.

Klaus P. Jungmann A; Kernfysisch Versneller Instituut

2005-01-01T23:59:59.000Z

95

Fundamental Constants on the Web  

Science Conference Proceedings (OSTI)

... PHYSICS Find Your Fundamental Constants on the Web. ... Use of the fundamental constants database also is growing rapidly. ...

96

Fundamental Constants Data Center Homepage  

Science Conference Proceedings (OSTI)

Fundamental Constants Data Center. Welcome. ... Fundamental Constants and Tests of Theory in Rydberg States of Hydrogenlike Ions" Phys. Rev. ...

2010-10-05T23:59:59.000Z

97

Fundamental Symmetries and Interactions  

E-Print Network (OSTI)

In Nuclear Physics numerous possibilities exist to investigate fundamental symmetries and interactions. In particular, the precise measurements of properties of fundamental fermions, searches for new interactions in $\\beta$-decays, and violations of discrete symmeties offer possibilities to search for physics beyond Standard Theory. Precise measurements of fundamental constants can be carried out. Low energy experiments allow to probe New Physics at mass scales far beyond the reach of present accelerators or such planned for the future and at which predicted new particles could be produced directly.

Klaus P. Jungmann

2005-02-10T23:59:59.000Z

98

Why gravity is fundamental  

E-Print Network (OSTI)

It is argued that the existence of a minimum size of spacetime may imply the fundamental existence of gravity as a geometric property of spacetime described by general relativity.

Shan Gao

2010-01-18T23:59:59.000Z

99

Why gravity is fundamental  

E-Print Network (OSTI)

It is argued that the existence of a minimum size of spacetime may imply the fundamental existence of gravity as a geometric property of spacetime described by general relativity.

Gao, Sheldon

2010-01-01T23:59:59.000Z

100

EconoThermodynamics, or the world economy "thermal death" paradox  

E-Print Network (OSTI)

The paper present one of attempts to apply the thermodynamics laws to economics. Introducing common thermodynamic parameters and considering world economics as a one macrosystem, authors demonstrate the possible consequences of entropy increasing due to irreversible economics activities. "Entropy" advices to leaders of different business units are presented.

Tishin, A M

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Addressing the Crisis in Fundamental Physics  

E-Print Network (OSTI)

I present the case for fundamental physics experiments in space playing an important role in addressing the current "dark energy'' crisis. If cosmological observations continue to favor a value of the dark energy equation of state parameter w=-1, with no change over cosmic time, then we will have difficulty understanding this new fundamental physics. We will then face a very real risk of stagnation unless we detect some other experimental anomaly. The advantages of space-based experiments could prove invaluable in the search for the a more complete understanding of dark energy. This talk was delivered at the start of the Fundamental Physics Research in Space Workshop in May 2006.

Christopher W. Stubbs

2007-12-18T23:59:59.000Z

102

Thermodynamic curvature and black holes  

E-Print Network (OSTI)

I give a relatively broad survey of thermodynamic curvature $R$, one spanning results in fluids and solids, spin systems, and black hole thermodynamics. $R$ results from the thermodynamic information metric giving thermodynamic fluctuations. $R$ has a unique status in thermodynamics as being a geometric invariant, the same for any given thermodynamic state. In fluid and solid systems, the sign of $R$ indicates the character of microscopic interactions, repulsive or attractive. $|R|$ gives the average size of organized mesoscopic fluctuating structures. The broad generality of thermodynamic principles might lead one to believe the same for black hole thermodynamics. This paper explores this issue with a systematic tabulation of results in a number of cases.

Ruppeiner, George

2013-01-01T23:59:59.000Z

103

Thermodynamic curvature and black holes  

E-Print Network (OSTI)

I give a relatively broad survey of thermodynamic curvature $R$, one spanning results in fluids and solids, spin systems, and black hole thermodynamics. $R$ results from the thermodynamic information metric giving thermodynamic fluctuations. $R$ has a unique status in thermodynamics as being a geometric invariant, the same for any given thermodynamic state. In fluid and solid systems, the sign of $R$ indicates the character of microscopic interactions, repulsive or attractive. $|R|$ gives the average size of organized mesoscopic fluctuating structures. The broad generality of thermodynamic principles might lead one to believe the same for black hole thermodynamics. This paper explores this issue with a systematic tabulation of results in a number of cases.

George Ruppeiner

2013-09-04T23:59:59.000Z

104

Nonequilibrium thermodynamics of a squeezed harmonic oscillator  

E-Print Network (OSTI)

We consider the thermodynamic properties of the squeezed vacuum state of a frequency--modulated quantum harmonic oscillator. We analytically relate the squeezing parameter to the irreversible work and the degree of nonadiabaticity of the frequency transformation. We furthermore determine the optimal modulation that leads to maximal squeezing, and discuss its implementation as well as the detection of squeezing in single cold ion traps.

Fernando Galve; Eric Lutz

2008-11-18T23:59:59.000Z

105

Thermodynamics of Enzyme-Catalyzed Reactions  

Science Conference Proceedings (OSTI)

Enzyme, Thermodynamics of Enzyme-Catalyzed Reactions, NIST. Thermodynamics of Enzyme-Catalyzed Reactions. NIST. ...

2013-04-05T23:59:59.000Z

106

Thermodynamic & Kinetic Data for Sustainable Energy  

Science Conference Proceedings (OSTI)

Thermodynamic & Kinetic Data for Sustainable Energy. Summary: Industry needs thermodynamic and kinetic data for the ...

2012-10-05T23:59:59.000Z

107

Wireless Sensor Network Fundamentals  

NLE Websites -- All DOE Office Websites (Extended Search)

Wireless Sensor Network Fundamentals Wireless Sensor Network Fundamentals Speaker(s): Steven Lanzisera Date: February 8, 2010 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Kevin Kircher Wireless sensor networks have been promising to provide easy data collection and control capability to applications ranging from scientific data collection, disaster recover, national security, and more. The user experience, however, has been filled with confusing terminology, complicated systems, and a lack of interoperability between vendors. Users with a background in the technology and fundamentals are better able to understand system capabilities, make decisions, and end up with a network that meets their needs. Although a sufficient coverage of this topic is at least a semester course, the goal of this talk is to give a brief

108

Monte Carlo fundamentals  

SciTech Connect

This report is composed of the lecture notes from the first half of a 32-hour graduate-level course on Monte Carlo methods offered at KAPL. These notes, prepared by two of the principle developers of KAPL`s RACER Monte Carlo code, cover the fundamental theory, concepts, and practices for Monte Carlo analysis. In particular, a thorough grounding in the basic fundamentals of Monte Carlo methods is presented, including random number generation, random sampling, the Monte Carlo approach to solving transport problems, computational geometry, collision physics, tallies, and eigenvalue calculations. Furthermore, modern computational algorithms for vector and parallel approaches to Monte Carlo calculations are covered in detail, including fundamental parallel and vector concepts, the event-based algorithm, master/slave schemes, parallel scaling laws, and portability issues.

Brown, F.B.; Sutton, T.M.

1996-02-01T23:59:59.000Z

109

Hydrogen recycling: fundamental processes  

DOE Green Energy (OSTI)

The recycling of hydrogen at the interior surfaces of plasma devices is an important and largely uncontrolled process at present. There remain important questions concerning the fundamental processes involved in recycling phenomena and the material dependence of these pocesses. A primary aim of the fundamental studies should be to develop sufficient understanding of the influence of materials properties on hydrogen recycling so that the materials and machine operating conditions can be selected to give maximum control of hydrogen recycling. In addition, realistic models of the wall behavior under recycling conditions need to be developed. Such modeling goes hand-in-hand with both fundamental process studies and in situ measurements, and may provide sufficient overall understanding of the influence of recycling on machine operation to impact design decisions effecting such important processes as impurity control, plasma, fueling, and pulse length.

Picraux, S.T.

1979-01-01T23:59:59.000Z

110

DOE FUNDAMENTALS HANDBOOK  

E-Print Network (OSTI)

The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

unknown authors

1992-01-01T23:59:59.000Z

111

SOME OCEAN MODEL FUNDAMENTALS  

E-Print Network (OSTI)

The purpose of these lectures is to present elements of the equations and algorithms used in numerical models of the large-scale ocean circulation. Such models generally integrate the ocean’s primitive equations, which are based on Newton’s Laws applied to a continuum fluid under hydrostatic balance in a spherical geometry, along with linear irreversible thermodynamics and subgrid scale (SGS) parameterizations. During formulations of both the kinematics and dynamics, we highlight issues related to the use of a generalized vertical coordinate. The vertical coordinate is arguably the most critical element determining how a model is designed and applications to which a model is of use.

Stephen M. Griffies

2005-01-01T23:59:59.000Z

112

Thermodynamic and Aerosol Controls in Southeast Pacific Stratocumulus  

Science Conference Proceedings (OSTI)

A near-large-eddy simulation approach with size-revolving (bin) microphysics is employed to evaluate the relative sensitivity of southeast Pacific marine boundary layer cloud properties to thermodynamic and aerosol parameters. Simulations are ...

David B. Mechem; Sandra E. Yuter; Simon P. de Szoeke

2012-04-01T23:59:59.000Z

113

The thermodynamics of bubbles  

E-Print Network (OSTI)

This paper outlines those concitions annanded by the laws of thermodynamics for equilibriza betwoen the vapor in a bubble and the surrounding liquid and then employs these concepts with a nucleation theory in an atteapt ...

Clark, John A.

1956-01-01T23:59:59.000Z

114

Hoisting & Rigging Fundamentals  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hoisting and Rigging Hoisting and Rigging Fundamentals for Riaaers and ODerators Pendant Control - Components TR244C, Rev. 5 December 2002 TR244C Rev . 5 TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii HOISTING AND RIGGING OBJECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 WIRE ROPE SLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 SYNTHETIC WEBBING SLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I O CHAINSLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 METAL MESH SLINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 SPREADER BEAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 RIGGING HARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

115

Extensivity and Relativistic Thermodynamics  

E-Print Network (OSTI)

The mathematical properties associated with the widely accepted concept of the extensivity of many of the common thermodynamic variables are examined and some of their consequences considered. The possible conflict between some of these and currently accepted results of special relativistic thermodynamics is highlighted. Although several questions are raised, answers are not advanced as this seems an area demanding calm, widespread reflection which could conceivably lead to radical revision of part, or parts, of theoretical physics.

J. Dunning-Davies

2007-06-27T23:59:59.000Z

116

Fundamentals Explain High Prices  

Gasoline and Diesel Fuel Update (EIA)

9 9 Notes: One can use a simple model to deal with price/fundamental relationships. This one predicts monthly average WTI price as a function of OECD total petroleum stock deviations from the normal levels . The graph shows the model as it begins predicting prices in 1992. It shows how well the model has predicted not only the direction, but the magnitude of prices over this 8+ year period. While the model is simple and not perfect, it does predict the overall trends and, in particular, the recent rise in prices. It also shows that prices may have over-shot the fundamental balance for a while -- at least partially due to speculative concerns over Mideast tensions, winter supply adequacy, and Iraq's export policies. Prices now seem to be correcting, and may even undershoot briefly

117

Variation of fundamental constants  

E-Print Network (OSTI)

We present a review of recent works devoted to the variation of the fine structure constant alpha, strong interaction and fundamental masses. There are some hints for the variation in quasar absorption spectra, Big Bang nucleosynthesis, and Oklo natural nuclear reactor data. A very promising method to search for the variation of the fundamental constants consists in comparison of different atomic clocks. Huge enhancement of the variation effects happens in transition between accidentally degenerate atomic and molecular energy levels. A new idea is to build a ``nuclear'' clock based on the ultraviolet transition between very low excited state and ground state in Thorium nucleus. This may allow to improve sensitivity to the variation up to 10 orders of magnitude! Huge enhancement of the variation effects is also possible in cold atomic and molecular collisions near Feschbach resonance.

V. V. Flambaum

2006-08-25T23:59:59.000Z

118

Book review Title: Non-equilibrium thermodynamics for engineers  

E-Print Network (OSTI)

Book review Title: Non-equilibrium thermodynamics for engineers Authors: Signe Kjelstrup, Dick book represents a significant contribution to a better understanding of fundamental and applied non metrics" Krzysztof J. Ptasinski, member of EGY Book Review Panel 1. Review by Krzysztof J. Ptasinski

Kjelstrup, Signe

119

Fundamental Interaction Mechanisms of Engineered ...  

Science Conference Proceedings (OSTI)

Fundamental Interaction Mechanisms of Engineered Nanomaterials with DNA. Summary: We utilized isotope-dilution liquid ...

2012-10-01T23:59:59.000Z

120

Quantum Complexity and Fundamental Physics  

Science Conference Proceedings (OSTI)

Quantum Complexity and Fundamental Physics. Scott Aaronson Computer Science and Artificial Intelligence Laboratory ...

2010-10-05T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Is the notion of time really fundamental?  

E-Print Network (OSTI)

From the Physics point of view, time is now best described through General Relativity, as part of space-time which is a dynamical object encoding gravity. Time possesses also some intrinsic irreversibility due to thermodynamics, quantum mechanical effects... This irreversibility can look puzzling since time-like loops (and hence time machines) can appear in General Relativity (for example in the Goedel universe, a solution of Einstein's equations). We take this apparent discrepancy as a warning bell pointing to us that time as we understand it, might not be fundamental and that whatever theory, lying beyond General Relativity, may not include time as we know it as a fundamental structure. We propose therefore, following the philosophy of analog models of gravity, that time and gravity might not be fundamental per se, but only emergent features. We illustrate our proposal using a toy-model where we show how the Lorentzian signature and Nordstroem gravity (a diffeomorphisms invariant scalar gravity theory) can emerge from a timeless non-dynamical space.

Florian Girelli; Stefano Liberati; Lorenzo Sindoni

2009-03-27T23:59:59.000Z

122

Evolution Vs. Thermodynamics  

NLE Websites -- All DOE Office Websites (Extended Search)

Evolution Vs. Thermodynamics Evolution Vs. Thermodynamics Name: Murphy iii Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: Does the THEORY of evolution contradict the Second Law of thermodynamics? If not, how can an organic system grow in complexity in light of that law? Do not even try to tell me that hot methane soup has less chaos than cool DNA. Replies: The second law only says that the entropy (disorder) of a complete closed system must increase with time, not that the orderliness of one part of that system cannot increase. Increasing complexity of life must be balanced with more increase of disorder somewhere else in the system. Life itself increases order, but only of a small part of the overall system, whose entropy, when all parts are added up, must always be increasing

123

Thermodynamic Modeling Studies  

NLE Websites -- All DOE Office Websites (Extended Search)

Modeling Studies Modeling Studies J. Lindner, L. T. Smith, J. C. Luthe, L. Pearson. R. K. Toghiani, Y. Xia, and P. Naik Institute for Clean Energy Technology Mississippi State University May 20,2009 Initial Tank Composition Remove liquid to reflect undrained saltcake Stage 1 Dissolution Remove transfer stream 1 liquids transfer stream 0 liquids recycle solids liquids transfer stream 1 liquids recycle solids Next Stage of Dissolution DWPF recycle Thermodynamic Modeling Studies 2 Overview of Presentation * Database Activities and Needs * C farm retrievals and neural network development * Thermodynamic data and computational methods for liquid waste flowsheet modeling (SRS) * Aluminum solubility studies Thermodynamic Modeling Studies 3 Database Activities and Needs * Earlier a mid-term study addressed the solubility of a number of systems if

124

Fisher info and thermodynamics' first law  

E-Print Network (OSTI)

1991); B. H. Lavenda, Thermodynamics of Extremes (Al- bion,Fisher information and thermodynamics’ 1st. law A. Plastinotransform (LT) of thermodynamics can be microscopically

Plastino, A; Plastino, A R; Soffer, Bernard H

2006-01-01T23:59:59.000Z

125

Thermodynamic scheme of inhomogeneous perfect fluid mixtures  

E-Print Network (OSTI)

Astron. Soc. 140 461 Thermodynamic scheme of inhomogeneousto have a different thermodynamic framework, in which non-S0264-9381(04)68056-7 Thermodynamic scheme of inhomogeneous

Zarate, R D; Quevedo, Hernando

2004-01-01T23:59:59.000Z

126

THE TRANSPOSED CRITICAL TEMPERATURE RANKINE THERMODYNAMIC CYCLE  

E-Print Network (OSTI)

Pines, "Program GEOTHM, a Thermodynamic Process Program forand R. L. Fulton, "The Thermodynamic and Cost Benefits of aof Elec- tric Power, Thermodynamic and Economic Design

Pope, William L.

2012-01-01T23:59:59.000Z

127

Thermodynamic measurements of applied magnetic materials  

E-Print Network (OSTI)

6 Thermodynamic measurements of 6.1based scanning calorimeter for thermodynamic prop- erties ofK.J. Michel, and F. Hellman. Thermodynamic measurements of

Cooke, David William

2010-01-01T23:59:59.000Z

128

DOE fundamentals handbook: Chemistry  

Science Conference Proceedings (OSTI)

The Chemistry Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of chemistry. The handbook includes information on the atomic structure of matter; chemical bonding; chemical equations; chemical interactions involved with corrosion processes; water chemistry control, including the principles of water treatment; the hazards of chemicals and gases, and basic gaseous diffusion processes. This information will provide personnel with a foundation for understanding the chemical properties of materials and the way these properties can impose limitations on the operation of equipment and systems.

Not Available

1993-01-01T23:59:59.000Z

129

Thermodynamics of electroweak matter  

E-Print Network (OSTI)

This paper is a slightly modified version of the introductory part of a PhD thesis, also containing the articles hep-ph/0303019, hep-ph/0510375 and hep-ph/0512177. We provide a short history of the research of electroweak thermodynamics and a brief introduction to the theory as well as to the necessary theoretical tools needed to work at finite temperatures. We then review computations regarding the pressure of electroweak matter at high temperatures (the full expression of the perturbative expansion of the pressure is given in the appendix) and the electroweak phase diagram at finite chemical potentials. Finally, we compare electroweak and QCD thermodynamics.

A. Gynther

2006-09-21T23:59:59.000Z

130

Confusion in Thermodynamics  

E-Print Network (OSTI)

For a long time now, confusion has existed in the minds of many over the meaning of various concepts in thermodynamics. Recently, this point has been brought to people's attention by two articles appearing on the well-known archive (arxiv) web site. The content of these two pieces serves to illustrate many of the problems and has occasioned the construction of this answer to at least some of them. The position of the axiom proposed by Carath\\'eodory is central in this matter and here its position is clarified and secured within the framework of thermodynamics. In particular, its relation to the First Law is examined and justified.

Jeremy Dunning-Davies; David Sands

2011-03-02T23:59:59.000Z

131

Thermodynamics of Ideal Gas in Cosmology  

E-Print Network (OSTI)

The equation of state and the state functions for the gravitational source are necessary conditions for solving cosmological model and stellar structure. The usual treatments are directly based on the laws of thermodynamics, and the physical meanings of some concepts are obscure. This letter show that, we can actually derive all explicit fundamental state functions for the ideal gas in the context of cosmology via rigorous dynamical and statistical calculation. These relations have clear physical meanings, and are valid in both non-relativistic and ultra-relativistic cases. Some features of the equation of state are important for a stable structure of a star with huge mass.

Ying-Qiu Gu

2007-08-22T23:59:59.000Z

132

Fundamentals versus Beliefs under Almost Common Knowledge  

E-Print Network (OSTI)

Fundamentals versus Beliefs under Almost Common Knowledgeabout the economic fundamentals, this indeterminacy vanishespsychology as on economic fundamentals has become widespread

Karp, Larry

2000-01-01T23:59:59.000Z

133

Fundamental geosciences program. Annual report, 1977  

DOE Green Energy (OSTI)

The geoscience program relating to geothermal energy consists of four projects. In the project on reservoir dynamics, sophisticated codes have been written to simulate the dynamics of heat flow in geothermal reservoir systems. These codes have also been applied to the investigations of natural aquifers as a storage system for thermal energy. In the second project, core samples are studied to determine the high temperature and high pressure behavior of aquifers in the presence of saturating fluids. The third project covers the systematic evaluation of the thermodynamic properties of electrolytes in order to interpret the behavior of geothermal fluids. The fourth project involves hydrothermal solubility measurements of various minerals to elucidate the chemistry and mass transfer in geothermal systems. The second major program includes four projects which involve precise measurements and analysis of physical and chemical properties of geologic materials. These include measurements of the thermodynamic properties (viscosity, density and heat capacity) of silicate materials to help understand magma genesis and evolution, high-precision neutron activation analysis of rare and trace elements in magmatic materials, and the precise measurement of seismic wave velocities near geological faults, in order to determine the buildup of stress in the earth's crust. Third, the development program in fundamental geosciences includes six innovative projects. These projects include research in the in situ leaching of uranium ore, properties of magmas, removal of pyrite from coal, properties of soils and soft rocks, stress flow behavior of fractured rock systems, and high-precision mass spectrometry.

Witherspoon, P.A.; Apps, J.A.

1977-01-01T23:59:59.000Z

134

Thermodynamic Database Population Software (DBCreate)  

Update Thermodynamic Databases for Modeling Geochemical Processes The DBCreate software quickly and accurately updates thermodynamic databases used in geochemical modeling, based on changes in temperatures and pressures. The software facilitates the ...

135

Discrete Thermodynamics of Chemical Equilibria  

E-Print Network (OSTI)

The paper sets forth comprehensive basics of Discrete Thermodynamics of Chemical Equilibria (DTD), developed by the author during the last decade and spread over series of publications. Based on the linear equations of irreversible thermodynamics, De Donder's definition of the thermodynamic force, and the Le Chatelier principle, DTD brings forward a notion of chemical equilibrium as a balance of internal and external thermodynamic forces, acting against a chemical system. The basic expression of DTD is a logistic map that ties together energetic characteristics of the chemical transformation in the system, its deviation from true thermodynamic equilibrium, and the sum of thermodynamic forces, causing that deviation. System deviation from thermodynamic equilibrium is the major variable of the theory. Solutions to the basic map define the chemical system domain of states comprising bifurcation diagrams with four areas, from true thermodynamic equilibrium to chaos, having specific distinctive meaning for chemica...

Zilbergleyt, B

2008-01-01T23:59:59.000Z

136

Vibrational Thermodynamics of Materials  

E-Print Network (OSTI)

Abstract. The literature on vibrational thermodynamics of materials is reviewed. The emphasis is on metals and alloys, especially on the progress over the last decade in understanding differences in the vibrational entropy of different alloy phases and phase transformations. Some results on carbides, nitrides, oxides, hydrides and lithium-storage materials are also covered. Principles of harmonic phonons in alloys are organized into thermodynamic models for unmixing and ordering transformations on an Ising lattice, and extended for non-harmonic potentials. Owing to the high accuracy required for the phonon frequencies, quantitative predictions of vibrational entropy with analytical models prove elusive. Accurate tools for such calculations or measurements were challenging for many years, but are more accessible today. Ab-initio methods for calculating phonons in solids are summarized. The experimental techniques of calorimetry, inelastic neutron scattering, and inelastic x-ray scattering are explained with enough detail to show the issues of using these methods for investigations of vibrational thermodynamics. The explanations extend to methods of data analysis that affect the accuracy of thermodynamic information. It is sometimes possible to identify the structural and chemical origins of the differences in vibrational entropy of materials, and the number of these assessments is growing. There has been

Brent Fultz

2009-01-01T23:59:59.000Z

137

Thermodynamics and Phase Diagrams  

Science Conference Proceedings (OSTI)

...of two-phase fields meet also is limited by thermodynamics. That is, the angle must be such that the extension of each beyond the point of intersection projects into a two-phase field, rather than a one-phase

138

Electrochemical Thermodynamic Measurement System - Energy ...  

The present invention provides systems and methods for accurately characterizing thermodynamic and materials properties of electrodes and electrochemical energy ...

139

Experimental Datasets from Chemical Thermodynamics  

E-Print Network (OSTI)

Mar 29, 2005 ... Optimization Online. Experimental Datasets from Chemical Thermodynamics. Evgenii Rudnyi (Evgenii ***at*** Rudnyi.Ru). Abstract: I have ...

140

Kinetic equilibrium and relativistic thermodynamics  

E-Print Network (OSTI)

Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized J\\"uttner distribution suggested in [1] is compatible with kinetic equilibrium. The requirement of compatibility of kinetic and thermodynamic equilibrium reveals several generalizations of the Gibbs relation where the velocity field is an independent thermodynamic variable.

Ván, P

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Kinetic equilibrium and relativistic thermodynamics  

E-Print Network (OSTI)

Relativistic thermodynamics is treated from the point of view of kinetic theory. It is shown that the generalized J\\"uttner distribution suggested in [1] is compatible with kinetic equilibrium. The requirement of compatibility of kinetic and thermodynamic equilibrium reveals several generalizations of the Gibbs relation where the velocity field is an independent thermodynamic variable.

P. Ván

2011-02-01T23:59:59.000Z

142

Materials Processing Fundamentals Symposium I  

Science Conference Proceedings (OSTI)

Sponsored by: Jt. EPD/MDMD Synthesis, Control, and Analysis in Materials Processing Committee, EPD Process Fundamentals, Aqueous Processing, Copper, ...

143

ALUMINIUM REDUCTION TECHNOLOGY: V: Fundamentals  

Science Conference Proceedings (OSTI)

ALUMINIUM REDUCTION TECHNOLOGY: Session V: Fundamentals. Sponsored by: LMD Aluminum Committee Program Organizer: Harald A. Řye, Institute of ...

144

Gravitational waves and fundamental physics  

E-Print Network (OSTI)

I give an overview of the motivations for gravitational-wave research, concentrating on the aspects related to ``fundamental'' physics.

Michele Maggiore

2006-02-15T23:59:59.000Z

145

Thermodynamics of Enzyme-Catalyzed Reactions  

Science Conference Proceedings (OSTI)

... RN, Tewari YB, Bhat TN, "Thermodynamics of Enzyme ... Thermodynamic Background; How to Use This Database ... and Chemical Reference Data as ...

2013-08-29T23:59:59.000Z

146

Methods for thermodynamic evaluation of battery state of health  

SciTech Connect

Described are systems and methods for accurately characterizing thermodynamic and materials properties of electrodes and battery systems and for characterizing the state of health of electrodes and battery systems. Measurement of physical attributes of electrodes and batteries corresponding to thermodynamically stabilized electrode conditions permit determination of thermodynamic parameters, including state functions such as the Gibbs free energy, enthalpy and entropy of electrode/electrochemical cell reactions, that enable prediction of important performance attributes of electrode materials and battery systems, such as energy, power density, current rate, cycle life and state of health. Also provided are systems and methods for charging a battery according to its state of health.

Yazami, Rachid; McMenamin, Joseph; Reynier, Yvan; Fultz, Brent T

2013-05-21T23:59:59.000Z

147

Zeroth Law compatibility of non-additive thermodynamics  

E-Print Network (OSTI)

Non-extensive thermodynamics was criticized among others by stating that the Zeroth Law cannot be satisfied with non-additive composition rules. In this paper we determine the general functional form of those non-additive composition rules which are compatible with the Zeroth Law of thermodynamics. We find that this general form is additive for the formal logarithms of the original quantities and the familiar relations of thermodynamics apply to these. Our result offers a possible solution to the longstanding problem about equilibrium between extensive and non-extensive systems or systems with different non-extensivity parameters.

T. S. Biró; P. Ván

2011-01-31T23:59:59.000Z

148

Practical aspects of corrosion fundamentals  

SciTech Connect

Aspects important in corrosion have been introduced. They are: (a) ``Pourbaix Diagrams`` which consider thermodynamic stability of metals as a function of electrical potential and water pH; (b) the anodic interfacial reaction rates which depend on potential and accumulation of reaction products; (c) the prediction of polarization curves based on the kinetics and thermodynamics; and (d) localized corrosion models, as this form of corrosion is a major cause of corrosion failures.

Isaacs, H.S.

1994-08-01T23:59:59.000Z

149

Main Parameters  

NLE Websites -- All DOE Office Websites (Extended Search)

Lattice Definitions Up: APS Storage Ring Parameters Previous: APS Storage Ring Parameters Main Parameters Storage Ring Parameters Notation Model Value General Parameters Nominal...

150

Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermodynamic Evaluation of Thermodynamic Evaluation of Low-GWP Refrigerants Mark O. McLinden National Institute of Standards and Technology markm@boulder.nist.gov; 303-497-3580 April 3, 2013 Optimization Fluid Modeling Cycle Modeling Final Candidates Optimum Thermo Parameters 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: HFC refrigerants face restrictions: U.S./Canada/Mexico proposal to Montreal Protocol (85 % cut) EU regulations likely on all application areas (79 % cut)

151

Thermodynamic Evaluation of Low-Global Warming Potential Refrigerants  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Thermodynamic Evaluation of Thermodynamic Evaluation of Low-GWP Refrigerants Mark O. McLinden National Institute of Standards and Technology markm@boulder.nist.gov; 303-497-3580 April 3, 2013 Optimization Fluid Modeling Cycle Modeling Final Candidates Optimum Thermo Parameters 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: HFC refrigerants face restrictions: U.S./Canada/Mexico proposal to Montreal Protocol (85 % cut) EU regulations likely on all application areas (79 % cut)

152

Thermodynamic theory of kinetic overshoots  

E-Print Network (OSTI)

Everything that is not prohibited is permissible. So, what is prohibited in the course of chemical reactions, heat transfer and other dissipative processes? Is it possible to “overshoot ” the equilibrium, and if yes, then how far? Thermodynamically allowed and prohibited trajectories of processes are discussed by the example of effects of equilibrium encircling. The complete theory of thermodynamically accessible states is presented. The space of all thermodynamically admissible paths is presented by projection on the “thermodynamic tree”, that is the tree of the related thermodynamic potential (entropy, free energy, free enthalpy) in the balance polyhedron. The stationary states and limit points for open systems are localized too. 1

Er N. Gorban; Gregory S. Yablonsky

2005-01-01T23:59:59.000Z

153

2014-03-31: Fundamentals of Metrology  

Science Conference Proceedings (OSTI)

Fundamentals of Metrology. Purpose: The Fundamentals of Metrology seminar will introduce the participant to the concepts ...

2013-07-02T23:59:59.000Z

154

2013-08-12: Fundamentals of Metrology  

Science Conference Proceedings (OSTI)

Fundamentals of Metrology. Purpose: The Fundamentals of Metrology seminar will introduce the participant to the concepts ...

2013-06-26T23:59:59.000Z

155

CODATA values of the fundamental constants  

Science Conference Proceedings (OSTI)

CODATA values of the fundamental physical constants. Summary: ... CODATA Task Group on Fundamental Constants websites at: ...

2013-06-28T23:59:59.000Z

156

Facility Representative Program: DOE Fundamentals Handbooks  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamentals Handbooks Fundamentals Handbooks Classical Physics (DOE-HDBK-1010-92) Volume 1 of 1 Electrical Science (DOE-HDBK-1011-92) Volume 1 of 4 Volume 2 of 4 Volume 3 of 4 Volume 4 of 4 Thermodynamics, Heat Transfer and Fluid Flow (DOE-HDBK-1012-92) Volume 1 of 3 Volume 2 of 3 Volume 3 of 3 Instrumentation and Control (DOE-HDBK-1013-92) Volume 1 of 2 Volume 2 of 2 Mathematics (DOE-HDBK-1014-92) Volume 1 of 2 Volume 2 of 2 Chemistry (DOE-HDBK-1015-93) Volume 1 of 2 Volume 2 of 2 Engineering Symbology, Prints and Drawings (DOE-HDBK-1016-93) Volume 1 of 2 Volume 2 of 2 Material Science (DOE-HDBK-1017-93) Volume 1 of 2 Volume 2 of 2 Mechanical Science (DOE-HDBK-1018-93) Volume 1 of 2 Volume 2 of 2 Nuclear Physics and Reactor Theory (DOE-HDBK-1019-93) Volume 1 of 2

157

Computational Thermodynamics and Kinetics  

Science Conference Proceedings (OSTI)

In addition to a fundamental understanding of the mechanisms underlying microstructure ... Atomic scale studies of diffusion and defects ... Explaining the Change in Diffusion Mechanism in the Series of L12 Phases In3R (R= Rare-

158

Gravity, Dimension, Equilibrium, & Thermodynamics  

E-Print Network (OSTI)

Is it actually possible to interpret gravitation as space's property in a pure classical way. Then, we note that extended self-gravitating system equilibrium depends directly on the number of dimension of the space in which it evolves. Given those precisions, we review the principal thermodynamical knowledge in the context of classical gravity with arbitrary dimension of space. Stability analyses for bounded 3D systems, namely the Antonov instability paradigm, are then rapproched to some amazing properties of globular clusters and galaxies.

Jerome Perez

2006-03-30T23:59:59.000Z

159

Thermodynamics of Chaplygin gas  

E-Print Network (OSTI)

We clarify thermodynamics of the Chaplygin gas by introducing the integrability condition. All thermal quantities are derived as functions of either volume or temperature. Importantly, we find a new general equation of state, describing the Chaplygin gas completely. We confirm that the Chaplygin gas could show a unified picture of dark matter and energy which cools down through the universe expansion without any critical point (phase transition).

Yun Soo Myung

2008-12-02T23:59:59.000Z

160

Classical QGP : IV. Thermodynamics  

E-Print Network (OSTI)

We construct the equation of a state of the classical QGP valid for all values of Gamma=V/K, the ratio of the mean Coulomb to kinetic energy. By enforcing the Gibbs relations, we derive the pertinent pressure and entropy densities for all Gamma. For the case of an SU(2) classical gluonic plasma our results compare well with lattice simulations. We show that the strongly coupled component of the classical QGP contributes significantly to the bulk thermodynamics across T_c.

Sungtae Cho; Ismail Zahed

2008-12-09T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Thermodynamics of Chaplygin gas  

E-Print Network (OSTI)

We clarify thermodynamics of the Chaplygin gas by introducing the integrability condition. All thermal quantities are derived as functions of either volume or temperature. Importantly, we find a new general equation of state, describing the Chaplygin gas completely. We confirm that the Chaplygin gas could show a unified picture of dark matter and energy which cools down through the universe expansion without any critical point (phase transition).

Myung, Yun Soo

2008-01-01T23:59:59.000Z

162

Thermodynamic modeling for organic solid precipitation  

SciTech Connect

A generalized predictive model which is based on thermodynamic principle for solid-liquid phase equilibrium has been developed for organic solid precipitation. The model takes into account the effects of temperature, composition, and activity coefficient on the solubility of wax and asphaltenes in organic solutions. The solid-liquid equilibrium K-value is expressed as a function of the heat of melting, melting point temperature, solubility parameter, and the molar volume of each component in the solution. All these parameters have been correlated with molecular weight. Thus, the model can be applied to crude oil systems. The model has been tested with experimental data for wax formation and asphaltene precipitation. The predicted wax appearance temperature is very close to the measured temperature. The model not only can match the measured asphaltene solubility data but also can be used to predict the solubility of asphaltene in organic solvents or crude oils. The model assumes that asphaltenes are dissolved in oil in a true liquid state, not in colloidal suspension, and the precipitation-dissolution process is reversible by changing thermodynamic conditions. The model is thermodynamically consistent and has no ambiguous assumptions.

Chung, T.H.

1992-12-01T23:59:59.000Z

163

PNNL: Fundamental & Computational Sciences - About  

NLE Websites -- All DOE Office Websites (Extended Search)

About Us Organizational Chart Button The Fundamental & Computational Sciences are vital at DOE's Pacific Northwest National Laboratory (PNNL). We advance scientific frontiers and...

164

Handbook of heat transfer fundamentals  

SciTech Connect

This handbook is on the fundamentals of heat transfer. It provides coverage on conduction, convection, and radiation and on thermophysical properties of materials.

Rohsenow, W.M.; Hartnett, J.P.; Ganic, E.N.

1985-01-01T23:59:59.000Z

165

Laser Ablation: Fundamentals and Applications  

NLE Websites -- All DOE Office Websites (Extended Search)

90 This seminar will include both experimental and theoretical topics of ultrafast laser ablation. In the first part, fundamental physics of ultrafast laser-material...

166

Thermodynamics of free Domain Wall fermions  

E-Print Network (OSTI)

Studying various thermodynamic quantities for the free domain wall fermions for both finite and infinite fifth dimensional extent N_5, we find that the lattice corrections are minimum for $N_T\\geq10$ for both energy density and susceptibility, for its irrelevant parameter M in the range 1.45-1.50. The correction terms are, however, quite large for small lattice sizes of $N_T\\leq8$. We propose modifications of the domain wall operator, as well as the overlap operator, to reduce the finite cut-off effects to within 10% of the continuum results of the thermodynamic quantities for the currently used N_T=6-8 lattices. Incorporating chemical potential, we show that \\mu^2 divergences are absent for a large class of such domain wall fermion actions although the chiral symmetry is broken for $\\mu\

R. V. Gavai; Sayantan Sharma

2008-11-19T23:59:59.000Z

167

On thermodynamic and microscopic reversibility  

SciTech Connect

The word 'reversible' has two (apparently) distinct applications in statistical thermodynamics. A thermodynamically reversible process indicates an experimental protocol for which the entropy change is zero, whereas the principle of microscopic reversibility asserts that the probability of any trajectory of a system through phase space equals that of the time reversed trajectory. However, these two terms are actually synonymous: a thermodynamically reversible process is microscopically reversible, and vice versa.

Crooks, Gavin E.

2011-07-12T23:59:59.000Z

168

Thermodynamic Characterization of Mexico City Aerosol during MILAGRO 2006  

E-Print Network (OSTI)

Thermodynamic Characterization of Mexico City Aerosol duringA computationally efficient thermodynamic equilibrium modelurban aerosols determined by thermodynamic equilibrium? An

Fountoukis, C.

2009-01-01T23:59:59.000Z

169

Fundamentals and Techniques of Nonimaging  

DOE Green Energy (OSTI)

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

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

2003-07-10T23:59:59.000Z

170

A fundamental approach for storage commodity classification  

E-Print Network (OSTI)

2.1 Fundamental23] Quintiere, J.G. , Fundamentals of Fire Phenomena. JohnOF CALIFORNIA, SAN DIEGO A Fundamental Approach for Storage

Gollner, Michael J.

2010-01-01T23:59:59.000Z

171

Thermodynamic Database for Nuclear Materials  

Science Conference Proceedings (OSTI)

Feb 8, 2007 ... This resource features an interactive index to thermodynamic properties included on the International Nuclear Safety Center Material Properties ...

172

Thermodynamic Software Research Platform - TMS  

Science Conference Proceedings (OSTI)

Mar 14, 2008 ... Automatic generation of data using ab initio and statistical mechanics ... for thermodynamic calculations, and a couple of simple front ends.

173

Thermodynamics of 1-flavor QCD  

E-Print Network (OSTI)

We present first results, for heavy to moderate quark masses, of a study of thermodynamic properties of 1-flavor QCD, using the multiboson algorithm.

C. Alexandrou; A. Boriçi; A. Feo; Ph. de Forcrand; A. Galli; F. Jegerlehner; T. Takaishi

1996-09-18T23:59:59.000Z

174

New results in extended thermodynamics.  

E-Print Network (OSTI)

??The subject of this thesis lays in the context of Extended Thermodynamics. The classical methodology to solve the system of balance equations, in E.T., leads… (more)

Carrisi, Maria Cristina

2008-01-01T23:59:59.000Z

175

Advances in Computational Solvation Thermodynamics.  

E-Print Network (OSTI)

??The aim of this thesis is to develop improved methods for calculating the free energy, entropy and enthalpy of solvation from molecular simulations. Solvation thermodynamics… (more)

Wyczalkowski, Matthew

2009-01-01T23:59:59.000Z

176

Effect of fluctuations on electron and phonon processes and thermodynamic parameters of Ag{sub 2}Te and Ag{sub 2}Se in the region of phase transition  

Science Conference Proceedings (OSTI)

Temperature dependences of electrical conductivity {sigma}, thermoelectric power {alpha}, results of differential thermal analysis {delta}T{sub y}, thermal conductivity {chi}, temperature conductivity {kappa}, and heat capacity C{sub p} were studied in Ag{sub 2}Te and Ag{sub 2}Se semiconductors in the region of the phase transition. Two extrema are observed in the temperature dependence {chi}(T): a maximum in the region of the {alpha}' {sup {yields}} {beta}' transition and a minimum in the region of the {beta}' {sup {yields}} {beta} transition; these extrema are caused by the similar dependence C{sub p}(T). It is shown that the {alpha} {sup {yields}} {alpha}' and {beta}' {sup {yields}} {beta} transitions are displacement transitions, while the {alpha}' {sup {yields}} {beta}' transition is of reconstruction type. It is established that the disorder parameter {eta} in silver chalcogenides is highly smeared in the region of the phase transition; therefore, disordering of phases at the point of the phase transition is incomplete: 73, 62, and 48% in Ag{sub 2}Te, Ag{sub 2}Se, and Ag{sub 2}S, respectively. The minimum volumes V{sub ph} for new phases are calculated; it is shown that the value of V{sub ph} in displacement transitions is larger than in the reconstruction-type transitions.

Aliev, S. A.; Aliev, F. F. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)], E-mail: farzali@physics.ab.az

2008-04-15T23:59:59.000Z

177

A Detailed Multi-Zone Thermodynamic Simulation For Direct-Injection Diesel Engine Combustion  

E-Print Network (OSTI)

A detailed multi-zone thermodynamic simulation has been developed for the direct-injection (DI) diesel engine combustion process. For the purpose of predicting heterogeneous type combustion systems, the model explores the formation of pre-ignition radicals, start of combustion, and eventual heat release. These mechanisms are described based on the current understanding and knowledge of the diesel engine combustion acquired through advanced laser-based diagnostics. Six zones are developed to take into account the surrounding bulk gas, liquid- and vapor-phase fuel, pre-ignition mixing, fuel-rich combustion products as well as the diffusion flame combustion products. A three-step phenomenological soot model and a nitric oxide emission model are applied based on where and when each of these reactions mainly occurs within the diesel fuel jet evolution process. The simulation is completed for a 4.5 liter, inline four-cylinder diesel engine for a range of operating conditions. Specifically, the engine possesses a compression ratio of 16.6, and has a bore and stroke of 106 and 127 mm. The results suggest that the simulation is able to accurately reproduce the fuel jet evolution and heat release process for conventional diesel engine combustion conditions. The soot and nitric oxide models are able to qualitatively predict the effects of various engine parameters on the engine-out emissions. In particular, the detailed thermodynamics and characteristics with respect to the combustion and emission formation processes are investigated for different engine speed/loads, injection pressures and timings, and EGR levels. The local thermodynamic properties and energy, mass distributions obtained from the simulation offer some fundamental insights into heterogeneous type combustion systems. The current work provides opportunities to better study and understand the diesel engine combustion and emission formation mechanisms for conventional diesel engine combustion modes. The flexible, low computational cost features of this simulation result in a convenient tool for conducting parametric studies, and benefits for engine control and diagnostics.

Xue, Xingyu 1985-

2012-12-01T23:59:59.000Z

178

Fundamental and composite scalars from extra dimensions  

E-Print Network (OSTI)

We discuss a scenario consisting of an effective 4D theory containing fundamental and composite fields. The strong dynamics sector responsible for the compositeness is assumed to be of extra dimensional origin. In the 4D effective theory the SM fermion and gauge fields are taken as fundamental fields. The scalar sector of the theory resembles a bosonic topcolor in the sense there are two scalar Higgs fields, a composite scalar field and a fundamental gauge-Higgs unification scalar. A detailed analysis of the scalar spectrum is presented in order to explore the parameter space consistent with experiment. It is found that, under the model assumptions, the acceptable parameter space is quite constrained. As a part of our phenomenological study of the model, we evaluate the branching ratio of the lightest Higgs boson and find that our model predicts a large FCNC mode h -> tc, which can be as large as O(10^{-3}). Similarly, a large BR for the top FCNC decay is obtained, namely B.R.(t -> c + H) \\simeq 10^{-4}

Alfredo Aranda; J. L. Diaz-Cruz; J. Hernandez-Sanchez; R. Noriega-Papaqui

2007-08-28T23:59:59.000Z

179

The Universe Adventure - Fundamental Particles  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamental Particles Fundamental Particles Chart of Fundamental Particles All matter in the universe is comprised of fundamental particles. So what exactly makes up this matter? All matter is made of fundamental particles that came into being at the birth of the Universe. Quarks experience the strong force which is carried by massless particles called gluons. They bond together in specific combinations to form protons, neutrons, and other hadrons. Leptons do not experience the strong force but may interact via the electromagnetic force, the weak force, or both. Anti-quarks and anti-leptons are exactly the same as their quark and lepton counterparts, but have an opposite charge. All massive particles are influenced by the force of gravity. Quark-Gluon Plasma: 10-12 Seconds After the Big Bang

180

Thermodynamic Origin of Life  

E-Print Network (OSTI)

Understanding the thermodynamic function of life may shed light on its origin. Life, as are all irreversible processes, is contingent on entropy production. Entropy production is a measure of the rate of the tendency of Nature to explore available microstates. The most important irreversible process generating entropy in the biosphere, and thus facilitating this exploration, is the absorption and transformation of sunlight into heat. Here we hypothesize that life began, and persists today, as a catalyst for the absorption and dissipation of sunlight at the surface of shallow seas. The resulting heat is then efficiently harvested by other irreversible processes such as the water cycle, hurricanes, and ocean and wind currents. RNA and DNA are the most efficient of all known molecules for absorbing the intense ultraviolet light that could have penetrated the dense early atmosphere, and are remarkably rapid in transforming this light into heat in the presence of liquid water. From this perspective, the origin and evolution of life, inseparable from water and the water cycle, can be understood as resulting from the natural thermodynamic imperative of increasing the entropy production of the Earth in its interaction with its solar environment. A mechanism is proposed for the reproduction of RNA and DNA without the need for enzymes, promoted instead through UV light dissipation and the ambient conditions of prebiotic Earth.

K. Michaelian

2009-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Ch. 33 Modeling: Computational Thermodynamics  

Science Conference Proceedings (OSTI)

This chapter considers methods and techniques for computational modeling for nuclear materials with a focus on fuels. The basic concepts for chemical thermodynamics are described and various current models for complex crystalline and liquid phases are illustrated. Also included are descriptions of available databases for use in chemical thermodynamic studies and commercial codes for performing complex equilibrium calculations.

Besmann, Theodore M [ORNL

2012-01-01T23:59:59.000Z

182

THERRP: a thermodynamic properties program  

DOE Green Energy (OSTI)

The computer program THERPP, a program that calculates the thermodynamic properties of light hydrocarbons and mixtures of light hydrocarbons is documented. A specific pressure--temperature or pressure--enthalpy grid is input to obtain properties in the desired region. THERPP is a modification of the program HSGC. Thermodynamic properties are calculated using Starling's modification to the Benedict-Webb-Rubin equation of state.

Deeds, R.S.

1977-05-01T23:59:59.000Z

183

Fundamental Constants Bibliography Now on the Web  

Science Conference Proceedings (OSTI)

... PHYSICS Fundamental Constants Bibliography Now on the Web. Some ... To help researchers working on or with fundamental. constants ...

184

NIST Fundamental Constants Data Center 1999 - FCDC  

Science Conference Proceedings (OSTI)

... FUNDAMENTAL CONSTANTS DATA CENTER. ... The FCDC mission is to: provide an international information center on the fundamental constants; ...

185

The fundamental relationships between grain orientation ...  

Science Conference Proceedings (OSTI)

... be used to probe the fundamental relationships between ... [32] HR Piehler, Crystal-Plasticity Fundamentals, in: Metals Handbook: Fundamen- tals ...

2013-03-11T23:59:59.000Z

186

THERMODYNAMIC PROPERTIES OF SeS  

E-Print Network (OSTI)

rights . ;, a 9 U (t,) -iii- THERMODYNAMIC PROPERTIES OF SeSSeS gas. only estimated thermodynamic data are Since groupinterest to study the thermodynamic properties of SeS in

Huang, M.-D.

2011-01-01T23:59:59.000Z

187

Thermodynamic Guidelines for the Prediction of Hydrogen Storage Reactions and Their Application to Destabillzed Hydride Mixtures  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermodynamic guidelines for the prediction of hydrogen Thermodynamic guidelines for the prediction of hydrogen storage reactions and their application to destabilized hydride mixtures Hydrogen Storage & Nanoscale Modeling Group Ford Motor Company Don Siegel dsiegel2@ford.com Phys. Rev. B 76, 134102 (2007) 1 Acknowledgements C. Wolverton V. Ozolins Computation Northwestern UCLA J. Yang A. Sudik Experiments Ford Ford 2 Computational Methodology * Atomistic computer simulations based on quantum mechanics (Density Functional Theory) * First-principles approach: - Only empirical input are crystal structure and fundamental physical constants - VASP code - PAW potentials - PW91 GGA - Temperature-dependent thermodynamic contributions evaluated within harmonic approximation * "Direct method" for construction of dynamical matrix

188

Equilibrium thermodynamics in modified gravitational theories  

E-Print Network (OSTI)

We show that it is possible to obtain a picture of equilibrium thermodynamics on the apparent horizon in the expanding cosmological background for a wide class of modified gravity theories with the Lagrangian density $f(R, \\phi, X)$, where $R$ is the Ricci scalar and $X$ is the kinetic energy of a scalar field $\\phi$. This comes from a suitable definition of an energy momentum tensor of the "dark" component that respects to a local energy conservation in the Jordan frame. In this framework the horizon entropy $S$ corresponding to equilibrium thermodynamics is equal to a quarter of the horizon area $A$ in units of gravitational constant $G$, as in Einstein gravity. For a flat cosmological background with a decreasing Hubble parameter, $S$ globally increases with time, as it happens for viable $f(R)$ inflation and dark energy models. We also show that the equilibrium description in terms of the horizon entropy $S$ is convenient because it takes into account the contribution of both the horizon entropy $\\hat{S}$ in non-equilibrium thermodynamics and an entropy production term.

Kazuharu Bamba; Chao-Qiang Geng; Shinji Tsujikawa

2009-09-11T23:59:59.000Z

189

Thermodynamics and Kinetics Information at NIST  

Science Conference Proceedings (OSTI)

... Staff (06/28/2013). Thermodynamic & Kinetic Data for Sustainable Energy (10/05/2012). Thermodynamics and Kinetics Group (07/06/2013 ...

2010-05-24T23:59:59.000Z

190

Understanding Thermodynamics and Structural Dynamics in ...  

Science Conference Proceedings (OSTI)

... talk will cover work done on understanding the thermodynamics and structural ... behavior can be modeled using a number of thermodynamic models ...

191

Phase Equilibrium Measurements and Thermodynamic Optimization ...  

Science Conference Proceedings (OSTI)

The phase diagram is calculated from the thermodynamic model with the FactSage ... The experimental data were used to verify and refine the thermodynamic ...

192

Connected gradings and fundamental group.  

E-Print Network (OSTI)

The main purpose of this paper is to provide explicit computations of the fundamental group of several algebras. For this purpose, given a $k$-algebra $A$, we consider the category of all connected gradings of $A$ by a group $G$ and we study the relation between gradings and Galois coverings. This theoretical tool gives information about the fundamental group of $A$, which allows its computation using complete lists of gradings.

Claude Cibils (I3M); Maria Julia Redondo (Departamento De Matematica UNS); Andrea Solotar (Departamento De Matematica UBA)

193

The fundamental scales of structures from first principles  

E-Print Network (OSTI)

Five fundamental scales of mass follow from holographic limitations, a self-similar law for angular momentum and the basic scaling laws for a fractal universe with dimension 2. The five scales correspond to the observable universe, clusters, galaxies, stars and the nucleon. The fundamental scales form naturally a self-similar hierarchy, generating new relationships among the parameters of the nucleon,the cosmological constant and the Planck scale. There is implied a sixth fundamental scale thatcorresponds to the electrostatic force within an atom. Identifying the implied scale as such leads to new relationships among the fundamental charge, the mass of the electron and cosmological parameters. Theseconsiderations also suggest that structures on the scale of galaxies and larger must be bound by non-Newtonian forces.

Scott Funkhouser

2008-04-15T23:59:59.000Z

194

DOE fundamentals handbook: Chemistry. Volume 2  

SciTech Connect

This handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of chemistry. This volume contains the following modules: reactor water chemistry (effects of radiation on water chemistry, chemistry parameters), principles of water treatment (purpose; treatment processes [ion exchange]; dissolved gases, suspended solids, and pH control; water purity), and hazards of chemicals and gases (corrosives [acids, alkalies], toxic compounds, compressed gases, flammable/combustible liquids).

Not Available

1993-01-01T23:59:59.000Z

195

shape parameters  

Science Conference Proceedings (OSTI)

... Shape Parameters or Form factors. Shape parameters or form factors are derived from more basic measurements such ...

196

CRC handbook of applied thermodynamics  

Science Conference Proceedings (OSTI)

This book feature an overview of the importance of physical properties and thermodynamics; and the use of thermodynamics to predict the extent of reaction in proposed new chemical combinations. The use of special types of data and prediction methods to develop flowsheets for probing projects; and sources of critically evaluated data, dividing the published works into three categories depending on quality are given. Methods of doing one's own critical evaluation of literature, a list of known North American contract experimentalist with the types of data measured by each, methods for measuring equilibrium data, and thermodynamic concepts to carry out process optimization are also featured.

Palmer, D.A. (Amoco Chemical Co., Naperville, IL (United States). Research and Development Dept.)

1987-01-01T23:59:59.000Z

197

Flow, Moisture, and Thermodynamic Variability Associated with Gulf of California Surges within the North American Monsoon  

Science Conference Proceedings (OSTI)

This study uses an improved surge identification method to examine composites of 29 yr of surface observations and reanalysis data alongside 10 yr of satellite precipitation data to reveal connections between flow, thermodynamic parameters, and ...

Nicole J. Schiffer; Stephen W. Nesbitt

2012-06-01T23:59:59.000Z

198

Entropy In The Present And Early Universe: New Small Parameters And Dark Energy Problem  

E-Print Network (OSTI)

It is demonstrated that entropy and its density play a significant role in solving the problem of the vacuum energy density (cosmological constant) of the Universe and hence the dark energy problem. Taking this in mind, two most popular models for dark energy - Holographic Dark Energy Model and Agegraphic Dark Energy Model - are analyzed. It is shown that the fundamental quantities in the first of these models may be expressed in terms of a new small dimensionless parameter. It is revealed that this parameter is naturally occurring in High Energy Gravitational Thermodynamics and Gravitational Holography (UV-limit). On this basis the possibility of a new approach to the problem of Quantum Gravity is discussed. Besides, the results obtained on the uncertainty relation of the pair "cosmological constant - volume of space-time", where the cosmological constant is a dynamic quantity, are reconsidered and generalized up to the Generalized Uncertainty Relation.

A. E. Shalyt-Margolin

2009-11-30T23:59:59.000Z

199

Entropy In The Present And Early Universe, New Small Parameters And Dark Energy Problem  

E-Print Network (OSTI)

It is demonstrated that entropy and its density play a significant role in solving the problem of the vacuum energy density (cosmological constant) of the Universe and hence the dark energy problem. Taking this in mind, two most popular models for dark energy - Holographic Dark Energy Model and Agegraphic Dark Energy Model - are analyzed. It is shown that the fundamental quantities in the first of these models may be expressed in terms of a new small dimensionless parameter. It is revealed that this parameter is naturally occurring in High Energy Gravitational Thermodynamics and Gravitational Holography (UV-limit). On this basis the possibility of a new approach to the problem of Quantum Gravity is discussed. Besides, the results obtained on the uncertainty relation of the pair "cosmological constant - volume of space-time", where the cosmological constant is a dynamic quantity, are reconsidered and generalized up to the Generalized Uncertainty Relation

Shalyt-Margolin, A E

2009-01-01T23:59:59.000Z

200

Thermodynamic Analysis of Ocean Circulation  

Science Conference Proceedings (OSTI)

Calculating a streamfunction as function of depth and density is proposed as a new way of analyzing the thermodynamic character of the overturning circulation in the global ocean. The sign of an overturning cell in this streamfunction directly ...

J. Nycander; J. Nilsson; K. Döös; G. Broström

2007-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Review of Selenium Thermodynamic Data  

Science Conference Proceedings (OSTI)

Utilities need accurate equilibrium and nonequilibrium models to predict concentrations of toxic metals, such as selenium, in the environment. A comprehensive review of available information revealed the insufficiency and inaccuracy of selenium thermodynamic data available for equilibrium modeling.

1988-02-12T23:59:59.000Z

202

On the Mathematics of Thermodynamics  

E-Print Network (OSTI)

We show that the mathematical structure of Gibbsian thermodynamics flows from the following simple elements: the state space of a thermodynamical substance is a measure space together with two orderings (corresponding to "warmer than" and "adiabatically accessible from") which satisfy certain plausible physical axioms and an area condition which was introduced by Paul Samuelson. We show how the basic identities of thermodynamics, in particular the Maxwell relations, follow and so the existence of energy, free energy, enthalpy and the Gibbs potential function. We also discuss some questions which we have not found dealt with in the literature, such as the amount of information required to reconstruct the equations of state of a substance and a systematic approach to thermodynamical identities.

J. B. Cooper; T. Russell

2011-02-08T23:59:59.000Z

203

Nonequilibrium Thermodynamics of Porous Electrodes  

E-Print Network (OSTI)

We reformulate and extend porous electrode theory for non-ideal active materials, including those capable of phase transformations. Using principles of non-equilibrium thermodynamics, we relate the cell voltage, ionic ...

Ferguson, Todd Richard

204

Thermodynamic black di-rings  

E-Print Network (OSTI)

Previously the five dimensional $S^1$-rotating black rings have been superposed in concentric way by some solitonic methods and regular systems of two $S^1$-rotating black rings were constructed by the authors and then Evslin and Krishnan (we called these solutions black di-rings). In this place we show some characteristics of the solutions of five dimensional black di-rings, especially in thermodynamic equilibrium. After the summary of the di-ring expressions and their physical quantities, first we comment on the equivalence of the two different solution-sets of the black di-rings. Then the existence of thermodynamic black di-rings are shown, in which both iso-thermality and iso-rotation between the inner black ring and the outer black ring are realized. We also give detailed analysis of peculiar properties of the thermodynamic black di-ring including discussion about a certain kind of thermodynamic stability (instability) of the system.

Iguchi, Hideo

2010-01-01T23:59:59.000Z

205

Atypical Thermodynamic Profiles in Hurricanes  

Science Conference Proceedings (OSTI)

The global positioning system dropwindsondes deployed in Hurricane Bonnie on 26 August 1998 with supporting deployments in Hurricanes Mitch (1998) and Humberto (2001) are used to identify three unusual thermodynamic structures in the lower-cloud ...

Gary M. Barnes

2008-02-01T23:59:59.000Z

206

Thermodynamic black di-rings  

SciTech Connect

Previously the five dimensional S{sup 1}-rotating black rings have been superposed in a concentric way by some solitonic methods, and regular systems of two S{sup 1}-rotating black rings were constructed by the authors and then Evslin and Krishnan (we called these solutions 'black di-rings'). In this place we show some characteristics of the solutions of five dimensional black di-rings, especially in thermodynamic equilibrium. After the summary of the di-ring expressions and their physical quantities, first we comment on the equivalence of the two different solution sets of the black di-rings. Then the existence of thermodynamic black di-rings is shown, in which both isothermality and isorotation between the inner black ring and the outer black ring are realized. We also give detailed analysis of peculiar properties of the thermodynamic black di-ring including discussion about a certain kind of thermodynamic stability (instability) of the system.

Iguchi, Hideo; Mishima, Takashi [Laboratory of Physics, College of Science and Technology, Nihon University, Narashinodai, Funabashi, Chiba 274-8501 (Japan)

2010-10-15T23:59:59.000Z

207

Thermodynamic Investigation of Crystalline Thorium Selenite ...  

Science Conference Proceedings (OSTI)

Page 1. Thermodynamic Investigation of Crystalline Thorium Selenite Monohydrate VP NesterenkoC,S Belarusian National ...

2006-07-20T23:59:59.000Z

208

Some topics in thermodynamics and quantum mechanics  

E-Print Network (OSTI)

We sketch some connecting relations involving fractional and quantum calculi, fractal structure, thermodynamics, and quantum mechanics.

Robert Carroll

2012-10-29T23:59:59.000Z

209

Fundamental constants in effective theory  

E-Print Network (OSTI)

There is a discussion between L. B. Okun, G. Veneziano and M. J. Duff, concerning the number of fundamental dimensionful constants in physics [1]. They advocated correspondingly 3, 2 and 0 fundamental constants. Here we consider this problem on example of the effective relativistic quantum field theory, which emerges in the low energy corner of quantum liquids and which reproduces many features of our physics including chiral fermions, gauge fields and dynamical gravity. 1 Introduction. The effective relativistic quantum field theory (RQFT) arising as emergent phenomenon in quantum liquids [2], or in other condensed matter systems [3], allows us to look at the problem of fundamental constants from the outside, i.e. from the point of view of an external observer who does not

G. E. Volovik

2008-01-01T23:59:59.000Z

210

Nuclear chiral dynamics and thermodynamics  

E-Print Network (OSTI)

This presentation reviews an approach to nuclear many-body systems based on the spontaneously broken chiral symmetry of low-energy QCD. In the low-energy limit, for energies and momenta small compared to a characteristic symmetry breaking scale of order 1 GeV, QCD is realized as an effective field theory of Goldstone bosons (pions) coupled to heavy fermionic sources (nucleons). Nuclear forces at long and intermediate distance scales result from a systematic hierarchy of one- and two-pion exchange processes in combination with Pauli blocking effects in the nuclear medium. Short distance dynamics, not resolved at the wavelengths corresponding to typical nuclear Fermi momenta, are introduced as contact interactions between nucleons. Apart from a set of low-energy constants associated with these contact terms, the parameters of this theory are entirely determined by pion properties and low-energy pion-nucleon scattering observables. This framework (in-medium chiral perturbation theory) can provide a realistic description of both isospin-symmetric nuclear matter and neutron matter. The importance of three-body forces is emphasized, and the role of explicit Delta(1232)-isobar degrees of freedom is investigated in detail. Nuclear chiral thermodynamics is developed and a calculation of the nuclear phase diagram is performed. This includes a successful description of the first-order phase transition from a nuclear Fermi liquid to an interacting Fermi gas and the coexistence of these phases below a critical temperature T_c. Density functional methods for finite nuclei based on this approach are also discussed. Effective interactions, their density dependence and connections to Landau Fermi liquid theory are outlined. Finally, the density and temperature dependence of the chiral (quark) condensate is investigated.

J. W. Holt; N. Kaiser; W. Weise

2013-04-23T23:59:59.000Z

211

Thermodynamics of the conversion of plutonium dioxide to plutonium monocarbide  

DOE Green Energy (OSTI)

The present study contains an equilibrium thermodynamic analysis of the Pu--C--O system and a discussion from an equilibrium thermodynamic point of view of the direct carbothermic reduction and two-step carbothermic-hydrogen reduction of PuO/sub 2/ to PuC/sub 1-x/. Included are considerations of the partial pressures of the various species in the Pu--C--O and Pu--C--H systems, the process parameters required for conversion of the oxide to the carbide, and the loss of plutonium due to vapor species.

Besmann, T.M.; Lindemer, T.B.

1976-07-01T23:59:59.000Z

212

Constraining the fundamental interactions and couplings with Eötvös experiments  

E-Print Network (OSTI)

Upper bounds for the violation of the Weak Equivalence Principle (WEP) by the Fundamental Interactions have been given before. We now recompute the limits on the parameters measuring the strength of the violation with the whole set of high accuracy E\\"{o}tv\\"{o}s experiments. Besides, limits on spatial variation of the Fundamental Constants \\alpha, Weinberg angle \\theta, and v, the vacuum expectation value of the Higgs field, are found in a model independent way. Limits on other parameters in the gauge sector are also found from the strucutre of the Standard Model.

Lucila Kraiselburd; Hector Vucetich

2011-10-16T23:59:59.000Z

213

Microscopic diagonal entropy and its connection to basic thermodynamic relations  

SciTech Connect

We define a diagonal entropy (d-entropy) for an arbitrary Hamiltonian system as S{sub d}=-{Sigma}{sub n{rho}nn}ln{rho}{sub nn} with the sum taken over the basis of instantaneous energy states. In equilibrium this entropy coincides with the conventional von Neumann entropy S{sub n} = -Tr{rho} ln {rho}. However, in contrast to S{sub n}, the d-entropy is not conserved in time in closed Hamiltonian systems. If the system is initially in stationary state then in accord with the second law of thermodynamics the d-entropy can only increase or stay the same. We also show that the d-entropy can be expressed through the energy distribution function and thus it is measurable, at least in principle. Under very generic assumptions of the locality of the Hamiltonian and non-integrability the d-entropy becomes a unique function of the average energy in large systems and automatically satisfies the fundamental thermodynamic relation. This relation reduces to the first law of thermodynamics for quasi-static processes. The d-entropy is also automatically conserved for adiabatic processes. We illustrate our results with explicit examples and show that S{sub d} behaves consistently with expectations from thermodynamics.

Polkovnikov, Anatoli, E-mail: asp@bu.edu [Department of Physics, Boston University, Boston, MA 02215 (United States)

2011-02-15T23:59:59.000Z

214

DEVELOPMENT OF A PROGRAM TO DETERMINE HIDDEN PERFORMANCE PARAMETERS OF A GASTURBINE.  

E-Print Network (OSTI)

?? Gas turbines overall theoretical performance analysis can be performed by using several thermodynamic theories and equations with the help of design parameters. However, limited… (more)

Ranasinghe, Chamila

2013-01-01T23:59:59.000Z

215

Fundamental decoherence in quantum gravity  

E-Print Network (OSTI)

A recently introduced discrete formalism allows to solve the problem of time in quantum gravity in a relational manner. Quantum mechanics formulated with a relational time is not exactly unitary and implies a fundamental mechanism for decoherence of quantum states. The mechanism is strong enough to render the black hole information puzzle unobservable.

Rodolfo Gambini; Rafael Porto; Jorge Pullin

2005-01-09T23:59:59.000Z

216

Fundamental physics and Lorentz violation  

E-Print Network (OSTI)

The violation of Lorentz symmetry can arise in a variety of approaches to fundamental physics. For the description of the associated low-energy effects, a dynamical framework known as the Standard-Model Extension has been developed. This talk gives a brief review of the topic focusing on Lorentz violation through varying couplings.

Ralf Lehnert

2003-12-05T23:59:59.000Z

217

Thermodynamics of Modified Chaplygin Gas and Tachyonic Field  

E-Print Network (OSTI)

Here we generalize the results of the work of ref. [10] in modified Chaplygin gas model and tachyonic field model. Here we have studied the thermodynamical behaviour and the equation of state in terms of volume and temperature for both models. We have used the solution and the corresponding equation of state of our previous work [12] for tachyonic field model. We have also studied the thermodynamical stability using thermal equation of state for the tachyonic field model and have shown that there is no critical points during thermodynamical expansion. The determination of $T_{*}$ due to expansion for the tachyonic field have been discussed by assuming some initial conditions. Here, the thermal quantities have been investigated using some reduced parameters.

Samarpita Bhattacharya; Ujjal Debnath

2010-12-26T23:59:59.000Z

218

Thermodynamic properties of pulverized coal during rapid heating devolatilization processes. Quarterly progress report, April--June 1993  

Science Conference Proceedings (OSTI)

Knowledge of the thermodynamic and morphological properties of coal associated with rapid heating decomposition pathways is essential to progress in coal utilization technology. Specifically, knowledge of the heat of devolatilization, surface area and density of coal as a function of rank characteristics, temperature and extent of devolatilization in the context of rapid heating conditions is essential to the fundamental determination of kinetic parameters of coal devolatilization. These same properties are also needed to refine existing devolatilization sub-models utilized in large-scale modeling of coal combustion systems. The objective of this research is to obtain data on the thermodynamic properties and morphology of coal under conditions of rapid heating. Specifically, the total heat of devolatilization, external surface area, BET surface area and true density will be measured for representative coal samples. The coal ranks to be investigated will include a high volatile A bituminous (PSOC 1451 D) and a low volatile bituminous (PSOC 1516D). An anthracite (PSOC 1468) will be used as a non-volatile coal reference. In addition, for one coal, the contribution of each of the following components to the overall heat of devolatilization will be measured: the specific heat of coal/char during devolatilization, the heat of thermal decomposition of the coal, the specific heat capacity of tars, and the heat of vaporization of tars.

Proscia, W.M.; Freihaut, J.D.

1993-08-01T23:59:59.000Z

219

Entanglement Theory and the Second Law of Thermodynamics  

E-Print Network (OSTI)

Entanglement is central both to the foundations of quantum theory and, as a novel resource, to quantum information science. The theory of entanglement establishes basic laws, such as the non-increase of entanglement under local operations, that govern its manipulation and aims to draw from them formal analogies to the second law of thermodynamics. However, while in the second law the entropy uniquely determines whether a state is adiabatically accessible from another, the manipulation of entanglement under local operations exhibits a fundamental irreversibility which prevents the existence of such an order. Here we show that a reversible theory of entanglement and a rigorous relationship with thermodynamics may be established when one considers all non-entangling transformations. The role of the entropy in the second law is taken by the asymptotic relative entropy of entanglement in the basic law of entanglement. We show the usefulness of this new approach to general resource theories and to quantum information theory.

Fernando G. S. L. Brandao; Martin B. Plenio

2008-10-14T23:59:59.000Z

220

Thermodynamic uncertainty relations again: A reply to Lavenda  

E-Print Network (OSTI)

In a previous paper (Found. Phys. 29, 655, (1999)), we have presented a review of various approaches in the literature towards the derivation of so-called thermodynamic uncertainty relations in statistical thermodynamics. This review has been critical. We have argued that some of these approaches are sound, i.e. they reach a valid conclusion, albeit under restricted conditions, whereas others were found to be incoherent and could not withstand the scrutiny of logical analysis. In the latter category we have included work of Lavenda on this topic. However, in a comment (Found. Phys. Lett. 13, 487 (2000)), Lavenda claims to have uncovered “fundamental errors” in our paper. In this reply we show that these claims are mistaken.

J. Uffink; J. Van Lith

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Thermodynamics and time-directional invariance  

E-Print Network (OSTI)

Time directions are not invariant in conventional thermodynamics. We broadly follow ideas of Ludwig Boltzmann and investigate implications of postulating time-directional invariance in thermodynamics. In this investigation, we require that thermodynamic descriptions are not changed under time reversal accompanied by replacement of matter by antimatter (i.e. CPT-invariant thermodynamics). The matter and antimatter are defined as thermodynamic concepts without detailing their physical structure. Our analysis stays within the limits of conceptual thermodynamics and leads to effective negative temperatures, to thermodynamic restrictions on time travel and to inherent antagonism of matter and antimatter. This antagonism is purely thermodynamic; it explains the difficulty in achieving thermodynamic equilibrium between matter and antimatter and does not postulate their mutual annihilation on contact. We believe that the conclusions of this work can be of interest not only for people researching or teaching thermodyn...

Klimenko, A Y

2012-01-01T23:59:59.000Z

222

DOE Fundamentals Handbook: Classical Physics  

Science Conference Proceedings (OSTI)

The Classical Physics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of physical forces and their properties. The handbook includes information on the units used to measure physical properties; vectors, and how they are used to show the net effect of various forces; Newton`s Laws of motion, and how to use these laws in force and motion applications; and the concepts of energy, work, and power, and how to measure and calculate the energy involved in various applications. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility systems and equipment.

Not Available

1992-06-01T23:59:59.000Z

223

DOE Fundamentals Handbook: Classical Physics  

SciTech Connect

The Classical Physics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of physical forces and their properties. The handbook includes information on the units used to measure physical properties; vectors, and how they are used to show the net effect of various forces; Newton's Laws of motion, and how to use these laws in force and motion applications; and the concepts of energy, work, and power, and how to measure and calculate the energy involved in various applications. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility systems and equipment.

Not Available

1992-06-01T23:59:59.000Z

224

Thermodynamics of Neptunium (V) Complexes with Phosphate at Elevated Temperatures  

E-Print Network (OSTI)

VITORGE, H. WANNER, Chemical Thermodynamics of Neptunium andData Bank, Chemical Thermodynamics 4, Elsevier, New York 4.Thermodynamics of Neptunium (V) Complexes with Phosphate at

Xia, Yuanxian

2009-01-01T23:59:59.000Z

225

Thermodynamics and Ionic Conductivity of Block Copolymer Electrolytes  

E-Print Network (OSTI)

2.3 REFERENCES Flory, P.J. , Thermodynamics of high polymerBlock Copolymer Thermodynamics - Theory And Experiment.on block copolymer thermodynamics by measuring the changes

Wanakule, Nisita Sidra

2010-01-01T23:59:59.000Z

226

Three Frontiers in the Thermodynamics of Protein Solutions  

E-Print Network (OSTI)

Three frontiers in the thermodynamics of protein solutions*the broad high- way of thermodynamics. ” ACKNOWLEDGMENTS ForThe great virtue of thermodynamics is its generality, its

Prausnitz, John M; Foose, Loddie

2007-01-01T23:59:59.000Z

227

Ocean dynamics and thermodynamics in the tropical Indo- Pacific region  

E-Print Network (OSTI)

Ocean dynamics and thermodynamics in the tropical Indo-Ocean dynamics and thermodynamics in the tropical Indo-affect the dynam- ics and thermodynamics of the upper ocean.

Drushka, Kyla

2011-01-01T23:59:59.000Z

228

Three Frontiers in the Thermodynamics of Protein Solutions  

E-Print Network (OSTI)

is the broad highway of thermodynamics. Acknowledgments: ForThree Frontiers in the Thermodynamics of Protein SolutionsThe great virtue of thermodynamics is its generality, its

Prausnitz, John; Hagar, Loddie

2008-01-01T23:59:59.000Z

229

Thermodynamics, Entropy, Information and the Efficiency of Solar Cells  

E-Print Network (OSTI)

and P.T. Landsberg, Thermodynamics and reciprocity of solar59. E. Yablonovitch, Thermodynamics of the fluorescentC. 139. E. Yablonovitch, Thermodynamics of the fluorescent

Abrams, Zeev R.

2012-01-01T23:59:59.000Z

230

A Molecular-Thermodynamic Lattice Model for Binary Mixtures  

E-Print Network (OSTI)

A Molecular-Thermodynamic Lattice Model for Binary Mixtures*was much interest in the thermodynamic properties of binarythat end, we use the thermodynamic perturbation method,

Qin, Yuan; Prausnitz, John M.

2005-01-01T23:59:59.000Z

231

Complexation of Actinides in Solution: Thermodynamic Measurements and Structural Characterization  

E-Print Network (OSTI)

of Actinides in Solution: Thermodynamic Measurements andAn integrated approach of thermodynamic measurements andAn integrated approach of thermodynamic measurements and

Rao, L.

2007-01-01T23:59:59.000Z

232

Far-from-equilibrium measurements of thermodynamic length  

E-Print Network (OSTI)

Equilibrium Measurements of Thermodynamic Length Edward H.November 5, 2008) Thermodynamic length is a path functionlength to the surface of thermodynamic states. Here, we show

Feng, Edward H.

2008-01-01T23:59:59.000Z

233

Thermodynamic Equilibrium-Driven Formation of Single-Sized Nanocrystals: Reaction Media Tuning CdSe Magic-Sized versus Regular Quantum Dots  

Science Conference Proceedings (OSTI)

A concept for the fundamental science of nanoparticle synthesis, thermodynamic equilibrium-driven formation of colloidal single-sized nanoparticle ensembles, is proposed and demonstrated in this manuscript, which addresses the controlled formation of CdSe magic-sized and regular quantum dots (MSQDs and RQDs). During formation, the former are magic-sized nuclei without further growth in size, while the latter experience nucleation and growth. Both MSQDs and RQDs exhibit bandgap emission, while the former have homogeneous spectra broadening only and the latter both homogeneous and inhomogeneous spectra broadening. The former are single-sized and the latter have size distribution. With continuous and homogeneous nucleation, the thermodynamically driven formation of MSQDs was realized via our one-pot noninjection approach, which features highly synthetic reproducibility and large-scale capability. With the proper tuning of the synthetic parameters, such as the nature of the reaction medium, that affect the thermodynamic equilibria, various CdSe MSQDs and RQDs were synthesized discriminately under otherwise identical synthetic formulation and reaction conditions; the reaction media were noncoordinating 1-octadecene, coordinating trioctylphosphine, and mixtures of the two. The nature of Cd precursors, affected also by the reaction media, plays a major role in the formation of MSQDs versus RQDs. The present investigation on the thermodynamically driven formation of CdSe single-sized nanoparticles via tuning of the reaction medium, mainly, brings novel insights into the formation mechanism and into the surface ligands of the resulting colloidal nanocrystals. More importantly, the present study provides novel experimental design and approaches to single-sized nanoparticles desired for various applications.

Yu, Kui [SIMS, NRC of Canada; Hu, Michael Z. [ORNL; Wang, Ruibing [SIMS, NRC of Canada; Le Piolet, Mickael [SIMS, NRC of Canada; Frotey, Marion [SIMS, NRC of Canada; Zaman, Md. Badruz [SIMS, NRC of Canada; Wu, Xiaohua [IMS, NRC of Canada; Leek, Donald M. [SIMS, NRC of Canada; Tao, Ye [IMS, NRC of Canada; Wilkinson, Diana [SIMS, NRC of Canada; Li, Chunsheng [National Research Council of Canada

2010-01-01T23:59:59.000Z

234

NIST Fundamental Constants Data Center 1998 - FCDC  

Science Conference Proceedings (OSTI)

... FUNDAMENTAL CONSTANTS DATA CENTER. MISSION CURRENT DIRECTIONS HIGHLIGHTS FUTURE OPPORTUNITIES MISSION. ...

235

NIST Fundamental Constants Data Center 1998 - FCDC  

Science Conference Proceedings (OSTI)

Fundamental Constants Data Center. Technical Highlights. NIST Reference on Constants, Units, and Uncertainty. This is ...

236

NIST Experiments Challenge Fundamental Understanding of ...  

Science Conference Proceedings (OSTI)

NIST Experiments Challenge Fundamental Understanding of Electromagnetism. From NIST Tech Beat: November 27, 2012. ...

2012-11-27T23:59:59.000Z

237

NIST Fundamental Constants Data Center 1994 - FCDC  

Science Conference Proceedings (OSTI)

Fundamental Constants Data Center. Technical Highlights. Measurement Uncertainty - 1994 Edition of NIST TN 1297. In ...

238

Disclaimer concerning the fundamental constants database  

Science Conference Proceedings (OSTI)

... Uncertainty Constants, Units & Uncertainty home page. Disclaimer concerning the fundamental constants database The ...

239

NIST Engineers Discover Fundamental Flaw in Transistor ...  

Science Conference Proceedings (OSTI)

NIST Engineers Discover Fundamental Flaw in Transistor Noise Theory. For Immediate Release: May 20, 2009. ...

2012-11-02T23:59:59.000Z

240

Thermodynamics for individual quantum systems  

E-Print Network (OSTI)

We present a framework for extending thermodynamics to individual quantum systems, including explicitly a thermal bath and work-storage device (essentially a 'weight' that can be raised or lowered). We then prove that the second law of thermodynamics holds in our framework, and give a simple protocol to extract the optimal amount of work from the system (equal to its change in free energy). Our results apply to any quantum system in an arbitrary initial state, in particular including non-equilibrium situations. The optimal protocol is essentially reversible, similar to classical Carnot cycles, and indeed, we can use it to construct a quantum Carnot engine.

Paul Skrzypczyk; Anthony J. Short; Sandu Popescu

2013-07-05T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

CRC handbook of applied thermodynamics  

Science Conference Proceedings (OSTI)

The emphasis of this book is on applied thermodynamics, featuring the stage of development of a process rather than the logical development of thermodynamic principles. It is organized according to the types of problems encountered in industry, such as probing research, process assessment, and process development. The applied principles presented can be used in most areas of industry including oil and gas production and processing, chemical processing, power generation, polymer production, food processing, synthetic fuels production, specialty chemicals and pharmaceuticals production, bioengineered processes, etc.

Palmer, D.A. (Amoco Chemical Corp., Naperville, IL (USA). Research and Development Dept.)

1987-01-01T23:59:59.000Z

242

Thermodynamics with density and temperature dependent particle masses and properties of bulk strange quark matter and strangelets  

E-Print Network (OSTI)

Thermodynamic formulas for investigating systems with density and/or temperature dependent particle masses are generally derived from the fundamental derivation equality of thermodynamics. Various problems in the previous treatments are discussed and modified. Properties of strange quark matter in bulk and strangelets at both zero and finite temperature are then calculated based on the new thermodynamic formulas with a new quark mass scaling, which indicates that low mass strangelets near beta equilibrium are multi-quark states with an anti-strange quark, such as the pentaquark (u^2d^2\\bar{s}) for baryon nmber 1 and the octaquark (u^4d^3\\bar{s}) for dibaryon etc.

X. J. Wen; X. H. Zhong; G. X. Peng; P. N. Shen; P. Z. Ning

2005-06-06T23:59:59.000Z

243

THERMODYNAMIC CONSIDERATIONS FOR MHD SPACE POWER SYSTEMS  

SciTech Connect

Thermodynamic efficiencies and radiator sizes of Brayton Cycle MHD generator systems, with and without regenerators, were obtained. A new gas cycle, the TriCycle, was synthesized. The Tri-Cycle has a radiator size as small as the regenerative Brayton Cycle, but a higher pressure ratio. A new cycle was discovered which operates on a dissociating chemical reaction and combines the advantages of a dry gas expansion, a liquid compression, and a Rankine Cycle size radiator. Entropy generation in supersonic MHD generators was analyzed, the polytropic efficiency was related to the generator operating parameters. Transient boil-off and refrigeration techniques were examined. Multiple radiation shield insulation thicknesses were computed. An optimum temperature ratio for heat rejection from an active refrigeration system was found for superconducting magnets. (auth)

Freedman, S.I.

1962-09-01T23:59:59.000Z

244

Transposed critical temperature Rankine thermodynamic cycle  

DOE Green Energy (OSTI)

The transposed critical temperature (TPCT) is shown to be an extremely important thermodynamic property in the selection of the working fluid and turbine states for optimized geothermal power plants operating on a closed organic (binary) Rankine cycle. When the optimum working fluid composition and process states are determined for given source and sink conditions (7 parameter optimization), turbine inlet states are found to be consistently adjacent to the low pressure side of the working fluids' TPCT line on pressure-enthalpy coordinates. Although the TPCT concepts herein may find numerous future applications in high temperature, advanced cycles for fossil or nuclear fired steam power plants and in supercritical organic Rankine heat recovery bottoming cycles for Diesel engines, this discussion is limited to moderate temperature (150 to 250/sup 0/C) closed simple organic Rankine cycle geothermal power plants. Conceptual design calculations pertinent to the first geothermal binary cycle Demonstration Plant are included.

Pope, W.L.; Doyle, P.A.

1980-04-01T23:59:59.000Z

245

Heat Death in Ancient and Modern Thermodynamics  

Science Conference Proceedings (OSTI)

The notion of Heat Death proves to be very useful for the understanding of the behaviour and evolutionary features of various thermodynamic systems. It is closely related to the problems that motivated the birth of modern thermodynamics, but these problems ...

Gábor Kutrovátz

2001-12-01T23:59:59.000Z

246

Thermodynamics of Modified Theories of Gravity.  

E-Print Network (OSTI)

??Einstein’s equations are derived by following Jacobson’s thermodynamic method. It is seen that a family of possible field equations exist which satisfy the thermodynamic argument.… (more)

Hackebill, Aric

2010-01-01T23:59:59.000Z

247

Fundamentals of horizontal well completions  

Science Conference Proceedings (OSTI)

Oil and gas wells are drilled horizontally for a variety of reasons, chiefly to improve production without drilling multiple vertical wells and to prevent water or gas coning. Benefits of horizontal drilling are well documented. This article addresses the fundamentals of completing a horizontal well, discussing completion by (1) open hole, (2) casing packers, (3) slotted or perforated liner, and (4) cemented casing/liner. Completion methods 1 through 3 are generally known as ''drain hole'' completions, and method 4 is commonly called the ''case hole'' or ''stimulated'' completion.

Austin, C.; Zimmerman, C.; Sullaway, B.; Sabins, F.

1988-05-01T23:59:59.000Z

248

On the Thermodynamics of Subduction  

Science Conference Proceedings (OSTI)

The thermodynamic processes attendant on the transfer of fluid between a surface mixed layer and a stratified thermocline beneath are discussed. For a parcel of fluid in the mixed layer to pass into the stratified thermocline—to subduct—it must ...

David Marshall; John Marshall

1995-01-01T23:59:59.000Z

249

Equilibrium Thermodynamics of Lattice QCD  

E-Print Network (OSTI)

Lattice QCD allows us to simulate QCD at non-zero temperature and/or densities. Such equilibrium thermodynamics calculations are relevant to the physics of relativistic heavy-ion collisions. I give a brief review of the field with emphasis on our work.

D. K. Sinclair

2007-01-14T23:59:59.000Z

250

Microscopic Models for Chemical Thermodynamics  

E-Print Network (OSTI)

We introduce an infinite particle system dynamics, which includes stochastic chemical kinetics models, the classical Kac model and free space movement. We study energy redistribution between two energy types (kinetic and chemical) in different time scales, similar to energy redistribution in the living cell. One example is considered in great detail, where the model provides main formulas of chemical thermodynamics.

Malyshev, V A

2011-01-01T23:59:59.000Z

251

Microscopic Models for Chemical Thermodynamics  

E-Print Network (OSTI)

We introduce an infinite particle system dynamics, which includes stochastic chemical kinetics models, the classical Kac model and free space movement. We study energy redistribution between two energy types (kinetic and chemical) in different time scales, similar to energy redistribution in the living cell. One example is considered in great detail, where the model provides main formulas of chemical thermodynamics.

V. A. Malyshev

2011-12-08T23:59:59.000Z

252

Computational Thermodynamics and Phase Transformations - TMS  

Science Conference Proceedings (OSTI)

May 1, 2007 ... Computational Thermodynamics and Phase Transformations ... Computation also provides a powerful tool for increasing basic understanding ...

253

WILLIAM HUME-ROTHERY AWARD LECTURE: Thermodynamics ...  

Science Conference Proceedings (OSTI)

Symposium, Hume-Rothery Symposium Thermodynamics and Diffusion ... (1997) the common assumption of a linear progression from basic research (science), ...

254

Hawking Emission and Black Hole Thermodynamics  

E-Print Network (OSTI)

A brief review of Hawking radiation and black hole thermodynamics is given, based largely upon hep-th/0409024.

Don N. Page

2006-12-18T23:59:59.000Z

255

Determination of thermodynamic properties by experimental and ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , Hume-Rothery Award Symposium: Thermodynamics and Kinetics of ...

256

COURSE NOTES: Metallurgical Thermodynamics (MET 320)  

Science Conference Proceedings (OSTI)

Feb 10, 2007 ... Department of Materials and Metallurgical Engineering. South Dakota School of Mines & Technology. Launch Metallurgical Thermodynamics

257

Fundamental Studies of Diffusion and Reactions in Hydrogen Storage Materials  

E-Print Network (OSTI)

Fundamental Science ofEnergy 010 "Fundamental studies of diffusion and reactionsInstitute's (UCEI) Fundamental Science of Energy Working

Van de Walle, Chris G; Peles, Amra; Janotti, Anderson; Wilson-Short, Gareth

2008-01-01T23:59:59.000Z

258

An Open Source Thermodynamic Software and Database Structure ...  

Science Conference Proceedings (OSTI)

Abstract Scope, Calphad thermodynamic software and databases are ... Assessment of Thermodynamic Data by Physically-based Thermo-kinetic Modeling.

259

Development of a Thermodynamic Database for Mold Flux and ...  

Science Conference Proceedings (OSTI)

Abstract Scope, The recent progress of the thermodynamic database and kinetic ... experimental thermodynamic and phase diagram data found in literature.

260

Thermodynamic investigations and modeling of copper and iron ...  

Science Conference Proceedings (OSTI)

Experimentally determined thermochemical and thermodynamic data are key input data for the thermodynamic optimization. For the experimental investigations, ...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Space-time thermodynamics of the glass transition  

E-Print Network (OSTI)

Space-time Thermodynamics of the Glass Transition Maurobehavior in terms of a thermodynamics of trajectory space.

Merolle, Mauro; Garrahan, Juan P.; Chandler, David

2005-01-01T23:59:59.000Z

262

High-speed thermodynamic calculations for kinetic simulation  

Science Conference Proceedings (OSTI)

... to determine the underlying thermodynamics for binary ... importance and more basic research ... Historically CALPHAD thermodynamic data was based ...

2013-07-02T23:59:59.000Z

263

Thermodynamic properties of two-dimensional nonideal structures with isotropic pair potential  

SciTech Connect

An approximation is proposed for energy density in two-dimensional nonideal systems for a wide class of isotropic repulsive pair interparticle potentials. The approximation allows one to determine the main thermodynamic functions and characteristics of the system by using well-known thermodynamic formulas. The results obtained with the help of this approximation are compared with the data of numerical simulations of thermodynamic properties of the structures under study. The simulations were performed in a wide range of parameters typical of laboratory dusty plasmas. Main attention was paid to the screened Coulomb potential.

Vaulina, O. S. [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)

2009-05-15T23:59:59.000Z

264

First law of thermodynamics in IR modified Horava-Lifshitz gravity  

Science Conference Proceedings (OSTI)

We study the first law of thermodynamics in IR modified Horava-Lifshitz spacetime. Based on the Bekenstein-Hawking entropy, we obtain the integral formula and the differential formula of the first law of thermodynamics for the Kehagias-Sfetsos black hole by treating {omega} as a new state parameter and redefining a mass that is just equal to M{sub ADM} obtained by Myung [32] if we take {alpha}=3{pi}/8.

Wang Mengjie; Jing Jiliang; Ding Chikun; Chen Songbai [Institute of Physics and Department of Physics, Hunan Normal University, Changsha, Hunan 410081 (China) and Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha, Hunan 410081 (China)

2010-04-15T23:59:59.000Z

265

Dynamic Stability and Thermodynamic Characterization in an Enzymatic Reaction at the Single Molecule Level  

E-Print Network (OSTI)

In this work we study the thermodynamic and dynamic characteristics of an enzymatic reaction at the single molecular level. We investigate how the stability of the enzyme-state stationary probability distribution, the reaction velocity, and its efficiency of energy conversion depend on the system parameters. We employ in this study a recently introduced formalism for performing a multiscale thermodynamic analysis in continuous-time discrete-state stochastic systems.

Santillán, Moisés

2010-01-01T23:59:59.000Z

266

Dynamic Stability and Thermodynamic Characterization in an Enzymatic Reaction at the Single Molecule Level  

E-Print Network (OSTI)

In this work we study, at the single molecular level, the thermodynamic and dynamic characteristics of an enzymatic reaction comprising a rate limiting step. We investigate how the stability of the enzyme-state stationary probability distribution, the reaction velocity, and its efficiency of energy conversion depend on the system parameters. We employ in this study a recently introduced formalism for performing a multiscale thermodynamic analysis in continuous-time discrete-state stochastic systems.

Moisés Santillán

2010-11-24T23:59:59.000Z

267

Key Words Gas chromatography Liquid chromatography Thermodynamic equilibria  

E-Print Network (OSTI)

Solution and adsorption thermodynamics Gas adsorption isotherms Summary After a brief recall of the chromatographic principles, the different applications of gas chromatographic measurements of thermodynamic equilibria were reviewed. Gas and liquid chromatographies are now well known and elegant methods for measuring the physicochemical properties and phase equilibrium thermodynamic constants. Although fundamentally a dynamical method and mostly known as a powerful separation technique, chromatography can be schematized by a succession of equilibria of a chemical species partitioning between a mobile phase and a fixed liquid or solid stationary phase. It can be operated in either infinite dilution or finite concentration conditions and permits to collect a large number of data for calculating molecular interactions for solutes which are either rare or available at the trace level. Gas chromatography permits the measurement of gas adsorption isotherms, gas-liquid equilibria, molecular diffusion and interaction virials. The modelization of successive partition equilibria occuring in the chromatographic column leads to rather simple expressions of differential enthalpy, entropy, free energy of adsorption or solution, variation of heat capacity, complexation constant, second virial coefficients, gas-solid and gasliquid isotherms and also binary or ternary equilibria. The possibilities of High Performance-Liquid Chromatography to investigate adsorption from solutions and chemical equilibria are also discussed. 1 Present address: D~partement de Chimie, Groupe Masse-Chimie

Cedex France

2012-01-01T23:59:59.000Z

268

Analytical approach to SU(2) Yang-Mills thermodynamics  

E-Print Network (OSTI)

We propose an analytical approach to SU(2) Yang-Mills thermodynamics. The existence of a macroscopic and rigid adjoint Higgs field, generated by dilute trivial-holonomy calorons at large temperature $T$ (electric phase), implies a twofold degeneracy of the ground state which signals a broken electric $Z_2$ symmetry. A finite energy density $\\propto T$ of the ground state arises due to caloron interaction. An evolution equation for the effective gauge coupling, derived from thermodynamical self-consistency, predicts a second-order like transition (seen in lattice simulations) at $T_c$ to a phase where monopoles are condensed and off-Cartan excitations decoupled. In this magnetic phase the ground state is unique and dominates the pressure (negative total pressure). While the magnetic phase has a massive, propagating 'photon' it confines fundamental matter (pre-confinement). The temperature dependence of the magnetic gauge coupling predicts the transition to the confining phase at $T_C\\sim \\frac{T_c}{1.9}$ where center-vortex loops condense and the 'photon' decouples. We believe that this transition is 'swallowed' by finite-size artefacts in lattice simulations. No thermodynamical connection exists between the confining and the magnetic phase.

Ralf Hofmann

2004-08-10T23:59:59.000Z

269

Microcanonical Thermostatistics as Foundation of Thermodynamics. The microscopic origin of condensation and phase separations  

E-Print Network (OSTI)

Conventional thermo-statistics address infinite homogeneous systems within the canonical ensemble. However, some 150 years ago the original motivation of thermodynamics was the description of steam engines, i.e. boiling water. Its essential physics is the separation of the gas phase from the liquid. Of course, boiling water is inhomogeneous and as such cannot be treated by canonical thermo-statistics. Then it is not astonishing, that a phase transition of first order is signaled canonically by a Yang-Lee singularity. Thus it is only treated correctly by microcanonical Boltzmann-Planck statistics. This is elaborated in the present article. It turns out that the Boltzmann-Planck statistics is much richer and gives fundamental insight into statistical mechanics and especially into entropy. This can even be done to some extend rigorously and analytically. The microcanonical entropy has a very simple physical meaning: It measures the microscopic uncertainty that we have about the system, i.e. the number of points in $6N$-dim phase, which are consistent with our information about the system. It can rigorously be split into an ideal-gas part and a configuration part which contains all the physics and especially is responsible for all phase transitions. The deep and essential difference between ``extensive'' and ``intensive'' control parameters, i.e. microcanonical and canonical statistics, is exemplified by rotating, self-gravitating systems.

D. H. E. Gross

2004-11-16T23:59:59.000Z

270

On the foundation of thermodynamics by microcanonical thermostatistics. The microscopic origin of condensation and phase separations  

E-Print Network (OSTI)

Conventional thermo-statistics address infinite homogeneous systems within the canonical ensemble. However, some 170 years ago the original motivation of thermodynamics was the description of steam engines, i.e. boiling water. Its essential physics is the separation of the gas phase from the liquid. Of course, boiling water is inhomogeneous and as such cannot be treated by conventional thermo-statistics. Then it is not astonishing, that a phase transition of first order is signaled canonically by a Yang-Lee singularity. Thus it is only treated correctly by microcanonical Boltzmann-Planck statistics. This is elaborated in the present paper. It turns out that the Boltzmann-Planck statistics is much richer and gives fundamental insight into statistical mechanics and especially into entropy. This can be done to a far extend rigorously and analytically. The deep and essential difference between ``extensive'' and ``intensive'' control parameters, i.e. microcanonical and canonical statistics, is exemplified by rotating, self-gravitating systems. In this paper the necessary appearance of a convex entropy $S(E)$ and the negative heat capacity at phase separation in small as well macroscopic systems independently of the range of the force is pointed out. The appearance of a critical end-point for the liquid-gas transition in the $p-E$ or $V-E$ phase diagram can be easily explained as well the non-existence of a critical end-point of the solid-liquid transition.

D. H. E. Gross

2005-09-08T23:59:59.000Z

271

Duality relation between radiation thermodynamics and cosmic string loop thermodynamics  

SciTech Connect

We discuss thermodynamics of electromagnetic radiation, with p=(1/3){rho} and S{proportional_to}T{sup 3}V, and of cosmic string loops, with p=-(1/3){rho} and S{proportional_to}T{sup -3}V, where p stands for pressure, T temperature, {rho} energy density, S entropy, and V volume. We write the thermodynamic formalisms under a common framework that illustrates their formal relationship and allows us to go from one to the other through a smooth transformation. From a microscopic perspective, these relations arise from the energy relations u({lambda})=hc/{lambda} for the photons of electromagnetic radiation, and u(l)=(c{sup 4}/a{sup 2}G)l for cosmic string loops, a being a numerical (dimensionless) constant and {lambda} and l the radiation wavelength and the length of a loop; G, c, and h are the gravitational constant, the speed of light in vacuo, and the Planck constant, respectively. The corresponding thermodynamic behaviors are seen to be connected through a related thermal duality corresponding to the change of T by T*=T{sub c}{sup 2}/T, with T{sub c} a reference temperature related to h, c, and G.

Jou, D. [Departament de Fisica, Universitat Autonoma de Barcelona, 08193 Bellaterra, Catalonia (Spain); Mongiovi, M. S. [Dipartimento di Metodi e Modelli Matematici, Universita di Palermo, 90128 Palermo (Italy); Sciacca, M. [Dipartimento di Sistemi Agro-Ambientali, Universita di Palermo, 90128 Palermo (Italy)

2011-05-15T23:59:59.000Z

272

Systematic analysis of transverse momentum distribution and non-extensive thermodynamics theory  

Science Conference Proceedings (OSTI)

A systematic analysis of transverse momentum distribution of hadrons produced in ultrarelativistic p+p and A+A collisions is presented. We investigate the effective temperature and the entropic parameter from the non-extensive thermodynamic theory of strong interaction. We conclude that the existence of a limiting effective temperature and of a limiting entropic parameter is in accordance with experimental data.

Sena, I.; Deppman, A. [Instituto de Fisica - Universidade de Sao Paulo (Brazil)

2013-03-25T23:59:59.000Z

273

New Thermodynamic Paradigm of Chemical Equilibria  

E-Print Network (OSTI)

The paper presents new thermodynamic paradigm of chemical equilibrium, setting forth comprehensive basics of Discrete Thermodynamics of Chemical Equilibria (DTd). Along with previous results by the author during the last decade, this work contains also some new developments of DTd. Based on the Onsager's constitutive equations, reformulated by the author thermodynamic affinity and reaction extent, and Le Chatelier's principle, DTd brings forward a notion of chemical equilibrium as a balance of internal and external thermodynamic forces (TdF), acting against a chemical system. Basic expression of DTd is the chemical system logistic map of thermodynamic states that ties together energetic characteristics of chemical reaction, occurring in the system, the system shift from "true" thermodynamic equilibrium (TdE), and causing that shift external thermodynamic forces. Solutions to the basic map are pitchfork bifurcation diagrams in coordinates "shift from TdE - growth factor (or TdF)"; points, corresponding to the ...

Zilbergleyt, B

2011-01-01T23:59:59.000Z

274

NIST Fundamental Constants Data Center 1997 - FCDC  

Science Conference Proceedings (OSTI)

Fundamental Constants Data Center. Technical Highlights. New ANSI Standard: US GUM. The ISO Guide to the Expression ...

275

A Study of the Fundamental Relationships between ...  

Science Conference Proceedings (OSTI)

Page 1. A Study of the Fundamental Relationships between Deformation- Induced Surface Roughness and Strain Localization in AA5754 ...

2013-03-11T23:59:59.000Z

276

NIST Fundamental Constants Data Center 1999 - FCDC  

Science Conference Proceedings (OSTI)

Fundamental Constants Data Center. Technical Highlights. Guide to the Expression of Uncertainty. In 1991, the FCDC, in ...

277

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: VI ...  

Science Conference Proceedings (OSTI)

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: Session VI: Microstructure/Property Relationships--Creep and Environmental Effects. Sponsored by: ...

278

Fundamentals of Fatigue and Corrosion Fatigue  

Science Conference Proceedings (OSTI)

...to be responsible for SCC (see the section â??Fundamentals of Stress-Corrosion Crackingâ?ť in this article),

279

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: IV ...  

Science Conference Proceedings (OSTI)

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: Session IV: Microstructure/Property Relationships--Strength, Plasticity, and Toughness. Sponsored by: ...

280

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: III ...  

Science Conference Proceedings (OSTI)

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: Session III: Processing, Microstructure and Properties. Sponsored by: MSD Flow & Fracture and Phase ...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: V ...  

Science Conference Proceedings (OSTI)

FUNDAMENTALS OF GAMMA TITANIUM ALUMINIDES: Session V: Microstructure/Property Relationships--Fatigue, Fracture, and Damage Modeling.

282

CODATA recommended values of the fundamental physical ...  

Science Conference Proceedings (OSTI)

Page 1. CODATA recommended values of the fundamental physical constants: 2002* Peter J. Mohr† and Barry N. Taylor ...

2011-06-08T23:59:59.000Z

283

Constraining gravitational and cosmological parameters with astrophysical data  

E-Print Network (OSTI)

We use astrophysical data to shed light on fundamental physics by constraining parametrized theoretical cosmological and gravitational models. Gravitational parameters are those constants that parametrize possible departures ...

Mao, Yi, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

284

Thermodynamics in Modified Gravity Theories  

E-Print Network (OSTI)

We demonstrate that there does exist an equilibrium description of thermodynamics on the apparent horizon in the expanding cosmological background for a wide class of modified gravity theories with the Lagrangian density $f(R, \\phi, X)$, where $R$ is the Ricci scalar and $X$ is the kinetic energy of a scalar field $\\phi$. This comes from a suitable definition of an energy momentum tensor of the "dark" component obeying the local energy conservation law in the Jordan frame. It is shown that the equilibrium description in terms of the horizon entropy $S$ is convenient because it takes into account the contribution of the horizon entropy $\\hat{S}$ in non-equilibrium thermodynamics as well as an entropy production term.

Kazuharu Bamba; Chao-Qiang Geng; Shinji Tsujikawa

2011-01-19T23:59:59.000Z

285

The Noncommutative Geometry Generalization of Fundamental Group.  

E-Print Network (OSTI)

A notion of fundamental group of spectral triples has been introduced. The notion uses a noncommutative analogue of unramified coverings. It was shown that in commutative case this fundamental group is a profinite completion of fundamental group of corresponding Riemann manifold.

Petr R. Ivankov; Nickolay P. Ivankov

286

Black Hole Thermodynamics and Electromagnetism  

E-Print Network (OSTI)

We show a strong parallel between the Hawking, Beckenstein black hole Thermodynamics and electromagnetism: When the gravitational coupling constant transform into the electromagnetic coupling constant, the Schwarzchild radius, the Beckenstein temperature, the Beckenstein decay time and the Planck mass transform to respectively the Compton wavelength, the Hagedorn temperature, the Compton time and a typical elementary particle mass. The reasons underlying this parallalism are then discussed in detail.

Burra G. Sidharth

2005-07-15T23:59:59.000Z

287

Prediction of thermodynamic properties of coal derivatives  

Science Conference Proceedings (OSTI)

The purpose of this research program is to understand and model the effect of the different intermolecular forces on the thermodynamic properties of systems containing pure compounds and mixtures. The compounds under consideration vary considerably in size, shape and energy. Therefore in order to develop a theory capable of describing accurately the thermodynamic properties and phase behavior of such systems over a wide range of temperature and pressure, one has to take into account explicitly the differences in shape and size among the various compounds as well as the different type of intermolecular interactions. We have developed equations of state for pure-component chain molecules. We have shown that the excellent performance of complicated theories such as the Generalized Flory Dimer (GFD) theory can be mimicked by simpler equations, if certain assumptions for the shape parameters are made. We developed engineering correlations based on the GFD theory, using local composition theory to take into account the attractive contribution. We compared various methods for the calculation of the repulsive and attractive contributions against computer simulation data for hard and square-well chains, and experimental data from the literature. We also have studied microstructure and local order in fluids that contain asymmetric molecules. In addition, simple cubic equations of state have been applied to calculate physical and chemical-reaction equilibria in non-ideal systems. In order to obtain a better understanding of the intermolecular forces and to test some of our recent models, we have performed considerable experimental work. We used FT-IR to examine the self-association of aliphatic alcohols due to hydrogen bonding. In addition, FT-IR spectroscopy was used to investigate Lewis acid-base interactions between probe and entrainer-cosolvent molecules.

Donohue, M.D.

1992-11-01T23:59:59.000Z

288

NIST Fundamental Constants Data Center - Tech. Act. 2001  

Science Conference Proceedings (OSTI)

Physics Laboratory home page. Fundamental Constants Data Center. ... Fundamental Constants Theory. Create an atomic theory ...

289

The Contribution of Economic Fundamentals to Movements in Exchange Rates  

E-Print Network (OSTI)

A puzzle in the international finance literature has been that fundamental variables do not help forecast the future exchange rate change better than the random walk benchmark. Recently Engel and West (2005, 2006) show that such a result can be explained by the present value model of the exchange rate if the discount factor for the expectation of future fundamental variables is close to one and the fundamental variables are I(1). The approach we take in this paper allows us not only to directly estimate the discount factor but also to study the expectation dynamics that are important in evaluating these exchange rate models. Our estimates are based on a century of data for the US and UK. We employ a Bayesian approach to account for both uncertainty about the specification of the underlying state space model as well as parameter uncertainty. First, we show that the degree of model uncertainty is great and that the implied contribution of observed monetary fundamentals is imprecisely estimated. Second, we deal with the weak identification by bringing additional information to bear on the analysis. This additional information comes in the form of data on interest rate and price differentials and prior information about PPP half-lives and the semi-elasticity of money demand. In general, we find that monetary fundamentals (money and output differentials) and money demand shifters contribute most to movements in exchange rates while uncovered interest parity risk premium

Nathan S. Balke; Jun Ma; Mark E. Wohar

2011-01-01T23:59:59.000Z

290

Thermodynamics of helix-coil transitions studied by multicanonical algorithms  

E-Print Network (OSTI)

Thermodynamics of helix-coil transitions in amino-acid homo-oligomers are studied by the recently proposed multicanonical algorithms. Homo-oligomers of length 10 are considered for three characteristic amino acids, alanine (helix former), valine (helix indifferent), and glycine (helix breaker). For alanine other lengths (15 and 20) are also considered in order to examine the length dependence. From one multicanonical production run with completely random initial conformations, we have obtained the lowest-energy conformations and various thermodynamic quantities (average helicity, Zimm-Bragg $s$ and $\\sigma$ parameters, free energy differences between helix and coil states, etc.) as functions of temperature. The results confirm the fact that alanine is helix-forming, valine is helix-indifferent, and glycine is helix-breaking.

Yuko Okamoto; Ulrich H. E. Hansmann

1995-05-25T23:59:59.000Z

291

Thermodynamics of SU(3) gauge theory at fixed lattice spacing  

E-Print Network (OSTI)

We study thermodynamics of SU(3) gauge theory at fixed scales on the lattice, where we vary temperature by changing the temporal lattice size N_t=(Ta_t)^{-1}. In the fixed scale approach, finite temperature simulations are performed on common lattice spacings and spatial volumes. Consequently, we can isolate thermal effects in observables from other uncertainties, such as lattice artifact, renormalization factor, and spatial volume effect. Furthermore, in the EOS calculations, the fixed scale approach is able to reduce computational costs for zero temperature subtraction and parameter search to find lines of constant physics, which are demanding in full QCD simulations. As a test of the approach, we study the thermodynamics of the SU(3) gauge theory on isotropic and anisotropic lattices. In addition to the equation of state, we calculate the critical temperature and the static quark free energy at a fixed scale.

T. Umeda; S. Ejiri; S. Aoki; T. Hatsuda; K. Kanaya; Y. Maezawa; H. Ohno

2008-10-09T23:59:59.000Z

292

Definition: Thermodynamic cycle | Open Energy Information  

Open Energy Info (EERE)

Thermodynamic cycle Thermodynamic cycle Jump to: navigation, search Dictionary.png Thermodynamic cycle A process in which a fluid (water, air, ammonia, etc) successively changes state (from a liquid to a gas and back to a liquid) for the purpose of producing or transferring energy.[1] View on Wikipedia Wikipedia Definition A thermodynamic cycle consists of a collection of thermodynamic processes transferring heat and work, while varying pressure, temperature, and other state variables, eventually returning a system to its initial state. In the process of going through this cycle, the system may perform work on its surroundings, therefore acting as a heat engine. State quantities depend only on the thermodynamic state, and cumulative variation of such properties adds up to zero during a cycle. Process quantities (or

293

Geometric description of BTZ black holes thermodynamics  

E-Print Network (OSTI)

We study the properties of the space of thermodynamic equilibrium states of the Ba\\~nados-Teitelboim-Zanelli (BTZ) black hole in (2+1)-gravity. We use the formalism of geometrothermodynamics to introduce in the space of equilibrium states a $2-$dimensional thermodynamic metric whose curvature is non-vanishing, indicating the presence of thermodynamic interaction, and free of singularities, indicating the absence of phase transitions. Similar results are obtained for generalizations of the BTZ black hole which include a Chern-Simons term and a dilatonic field. Small logarithmic corrections of the entropy turn out to be represented by small corrections of the thermodynamic curvature, reinforcing the idea that thermodynamic curvature is a measure of thermodynamic interaction.

Hernando Quevedo; Alberto Sanchez

2008-11-15T23:59:59.000Z

294

Thermodynamic Curvature of the BTZ Black Hole  

E-Print Network (OSTI)

Some thermodynamic properties of the Bańados-Teitelboim-Zanelli (BTZ) black hole are studied to get the effective dimension of its corresponding statistical model. For this purpose, we make use of the geometrical approach to the thermodynamics: Considering the black hole as a thermodynamic system with two thermodynamic variables (the mass M and the angular momemtum J), we obtain two-dimensional Riemannian thermodynamic geometry described by positive definite Ruppeiner metric. From the thermodynamic curvature we find that the extremal limit is the critical point. The effective spatial dimension of the statistical system corresponding to the near-extremal BTZ black holes is one. Far from the extremal point, the effective dimension becomes less than one, which leads to one possible speculation on the underlying structure for the corresponding statistical model. Typeset using REVTEX

Rong-gen Cai; Jin-ho Cho

1998-01-01T23:59:59.000Z

295

Thermodynamic  

Science Conference Proceedings (OSTI)

... TN. Oak Ridge Metrology Center, Oak Ridge, TN [105000- 0] Oak Ridge National Laboratory - Metrology, Oak Ridge, TN [200659- 0] Transcat ...

2013-07-19T23:59:59.000Z

296

Thermodynamics of discrete quantum processes  

E-Print Network (OSTI)

We define thermodynamic configurations and identify two primitives of discrete quantum processes between configurations for which heat and work can be defined in a natural way. This allows us to uncover a general second law for any discrete trajectory that consists of a sequence of these primitives, linking both equilibrium and non-equilibrium configurations. Moreover, in the limit of a discrete trajectory that passes through an infinite number of configurations, i.e. in the reversible limit, we recover the saturation of the second law. Finally, we show that for a discrete Carnot cycle operating between four configurations one recovers Carnot's thermal efficiency.

Janet Anders; Vittorio Giovannetti

2012-11-01T23:59:59.000Z

297

Thermodynamics of tubelike flexible polymers  

E-Print Network (OSTI)

In this work we present the general phase behavior of short tubelike flexible polymers. The geometric thickness constraint is implemented through the concept of the global radius of curvature. We use sophisticated Monte Carlo sampling methods to simulate small bead-stick polymer models with Lennard-Jones interaction among non-bonded monomers. We analyze energetic fluctuations and structural quantities to classify conformational pseudophases. We find that the tube thickness influences the thermodynamic behavior of simple tubelike polymers significantly, i.e., for given temperature, the formation of secondary structures strongly depends on the tube thickness.

Thomas Vogel; Thomas Neuhaus; Michael Bachmann; Wolfhard Janke

2009-07-17T23:59:59.000Z

298

CODATA Key Values for Thermodynamics - TMS  

Science Conference Proceedings (OSTI)

Feb 8, 2007 ... This site includes internationally agreed upon values for thermodynamic properties of key chemical substances established by the Committee ...

299

Geothermal: Sponsored by OSTI -- Thermodynamic properties of...  

Office of Scientific and Technical Information (OSTI)

Thermodynamic properties of a geothermal working fluid; 90% isobutane-10% isopentane: Final report Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us |...

300

Thermodynamic and phase relations of intermetallic anode ...  

Science Conference Proceedings (OSTI)

The experimental data obtained are necessary for thermodynamic optimizations and direct estimations of the performance of respective anode materials in an ...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Thermodynamic assessment of Pu-based alloys  

Science Conference Proceedings (OSTI)

Symposium, Hume-Rothery Award Symposium: Thermodynamics and Kinetics of ... Calphad Data and File Repositories for the Development of Design Tools for ...

302

Vector Representation of Trade Cumulus Thermodynamic Fluxes  

Science Conference Proceedings (OSTI)

A vector representation of the BOMEX thermodynamic budget data is presented which shows graphically the relationship of the fluxes and the mean layer structure.

Alan K. Betts

1985-12-01T23:59:59.000Z

303

Phase Diagrams & Computational Thermodynamics-Solder ... - TMS  

Science Conference Proceedings (OSTI)

Feb 8, 2007 ... This webpage contains a collection of calculated binary and ternary systems that are relevant to solders. The thermodynamic descriptions of ...

304

Modelling of Slag Surface Tension from Thermodynamics  

Science Conference Proceedings (OSTI)

The relation between thermodynamics and surface tension is given by ... Basic Research of Direct Pyrolysis Performance of MgCl2 in Molten State for New ...

305

Thermodynamic and Kinetic Simulation and Experimental Results ...  

Science Conference Proceedings (OSTI)

Through the use of thermodynamic and kinetic modeling software, NETL has designed a systematic method that has been successfully developed to design an ...

306

Thermodynamics of Lemaitre-Tolman-Bondi Model  

E-Print Network (OSTI)

Here we consider our universe as inhomogeneous spherically symmetric Lemaitre-Tolman-Bondi Model and analyze the thermodynamics of this model of the universe. The trapping horizon is calculated and is found to coincide with the apparent horizon. The Einstein field equations are shown to be equivalent with the unified first law of thermodynamics. Finally assuming the first law of thermodynamics validity of the generalized second law of thermodynamics is examined at the apparent horizon for the perfect fluid and at the event horizon for holographic dark energy.

Subenoy Chakraborty; Nairwita Mazumder; Ritabrata Biswas

2010-06-13T23:59:59.000Z

307

Computational Thermodynamics and Kinetics in Materials Design  

Science Conference Proceedings (OSTI)

A powerful utility in this endeavor is the use of computational thermodynamic and ... Analyses on the Effect of Hot Spot Density on Material Consumption Rate.

308

Vacuum Distillation Refining of Crude Tin - Thermodynamics ...  

Science Conference Proceedings (OSTI)

Presentation Title, Vacuum Distillation Refining of Crude Tin - Thermodynamics Analysis and Experiments on the Removal of Arsenic from the Crude Tin.

309

Thermodynamics of the formation of catalyst clusters for carbon nanotube growth  

SciTech Connect

A fundamental thermodynamic model of formation of catalyst clusters for growing carbon nanotubes has been developed and model predictions have been compared with the experimental data. An expression for the size distribution function of clusters, depending on the conditions of their formation, is obtained. It is shown that surface tension plays an important role in the cluster formation. The surface tension coefficient for iron clusters at 950 deg. C is determined.

Bulyarskii, S. V.; Pyatilova, O. V.; Tsygantsov, A. V. [Ulyanovsk State University (Russian Federation); Basaev, A. S.; Galperin, V. A., E-mail: V.Galperin@tcen.ru; Pavlov, A. A.; Shaman, Yu. P. [Moscow Institute of Electronic Engineering, Technology Center Research and Production Complex (Russian Federation)

2010-12-15T23:59:59.000Z

310

Fundamental & Applied Bioenergy | Clean Energy | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

a new generation of efficient bioenergy strategies that will reduce U.S. dependence on foreign oil and help curb carbon emissions. Fundamental and applied bioenergy research at...

311

CODATA Recommended Values of the Fundamental Physical ...  

Science Conference Proceedings (OSTI)

... As noted in CODATA-06, the binding energy for tritium, 3H, is ... This more fundamental way of handling the SMILETRAP group's results is motivated ...

2012-04-23T23:59:59.000Z

312

CODATA recommended values of the fundamental physical ...  

Science Conference Proceedings (OSTI)

... However, the binding energy for tritium, 3H, is not included in that table. ... This more fundamental way of handling the SMILETRAP group's results is ...

2012-11-15T23:59:59.000Z

313

CODATA Recommended Values of the Fundamental Physical ...  

Science Conference Proceedings (OSTI)

... However, the binding energy for tritium, 3H, is not included in that table. ... This more fundamental way of handling the SMILETRAP group's results is ...

2013-01-02T23:59:59.000Z

314

Fundamentals of Electrochemical Deposition, Second Edition - TMS  

Science Conference Proceedings (OSTI)

Jul 25, 2007 ... Fundamentals of Electrochemical Deposition, 2nd Edition by Milan Paunovic and Mordechay Schlesinger provides a ... This is not a handbook.

315

PNNL: Computational Sciences & Mathematics - Fundamental and...  

NLE Websites -- All DOE Office Websites (Extended Search)

(CM4) Northwest Institute for Advanced Computing Seminar Series Frontiers in Computational and Information Sciences Lecture Series Fundamental & Computational Sciences Home...

316

PNNL: Fundamental & Computational Sciences Directorate - Atmospheric...  

NLE Websites -- All DOE Office Websites (Extended Search)

and complete data to another process without synchronization. Fundamental & Computational Sciences Home About Us Research Highlights Search for Staff Publications & Journal...

317

Perspectives in Fundamental Physics in Space  

E-Print Network (OSTI)

We discuss the fundamental principles underlying the current physical theories and the prospects of further improving their knowledge through experiments in space.

Orfeu Bertolami; Clovis Jacinto de Matos; Jean Christophe Grenouilleau; Olivier Minster; Sergio Volonte

2004-05-07T23:59:59.000Z

318

Fundamentals in Laser Additive Manufacturing of Metals  

Science Conference Proceedings (OSTI)

Presentation Title, Fundamentals in Laser Additive Manufacturing of Metals. Author(s), Xinjin Cao, Yinan Zhang, Priti Wanjara, Mamoun Medraj. On-Site Speaker ...

319

Facility Representative Program: Nuclear Safety Basis Fundamentals...  

NLE Websites -- All DOE Office Websites (Extended Search)

Qualification Information Qualification Standards DOE Order Self-Study Modules DOE Fundamentals Handbooks Nuclear Safety Basis Self-Study Guide Energy Online Courses Available...

320

"Fundamental Challenges in Solar Energy Conversion" workshop...  

Office of Science (SC) Website

Fundamental Challenges in Solar Energy Conversion" workshop hosted by LMI-EFRC Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Materials Tribology: Fundamentals, Applications and Solutions  

Science Conference Proceedings (OSTI)

Thomas W. Scharf, University of North Texas. Scope, This symposium seeks to address the fundamental materials issues governing adhesion, friction and wear

322

Materials Processing Fundamentals - Programmaster.org  

Science Conference Proceedings (OSTI)

Justin Mandel Crapps, ExxonMobil. Scope, The key interest areas to be covered in this symposium are all aspects of the fundamentals, synthesis, analysis, ...

323

Metal Micromachining Program - Fundamental Science - Sandia National...  

NLE Websites -- All DOE Office Websites (Extended Search)

> Fundamental Science Microsystems Home Custom Microsystems Solutions Microsystems R&D Services Capabilities and Technologies Facilities Trusted Microsystems General Info About Us...

324

Velocity Distributions from Nonextensive Thermodynamics  

E-Print Network (OSTI)

There is no accepted mechanism that explains the equilibrium structures that form in collisionless cosmological N-body simulations. Recent work has identified nonextensive thermodynamics as an innovative approach to the problem. The distribution function that results from adopting this framework has the same form as for polytropes, but the polytropic index is now related to the degree of nonextensiveness. In particular, the nonextensive approach can mimic the equilibrium structure of dark matter density profiles found in simulations. We extend the investigation of this approach to the velocity structures expected from nonextensive thermodynamics. We find that the nonextensive and simulated N-body rms-velocity distributions do not match one another. The nonextensive rms-velocity profile is either monotonically decreasing or displays little radial variation, each of which disagrees with the rms-velocity distributions seen in simulations. We conclude that the currently discussed nonextensive models require further modifications in order to corroborate dark matter halo simulations. (adapted from TeX)

Eric I. Barnes; Liliya L. R. Williams; Arif Babul; Julianne J. Dalcanton

2006-10-05T23:59:59.000Z

325

Thermodynamic properties of pulverized coal during rapid heating devolatilization processes. Quarterly progress report, January--March 1993  

SciTech Connect

Knowledge of the thermodynamic and morphological properties of coal associated with rapid heating decomposition pathways is essential to progress in coal utilization technology. Specifically, knowledge of the heat of devolatilization, surface area and density of coal as a function of rank characteristics, temperature and extent of devolatilization in the context of rapid heating conditions is required both, for the fundamental determination of kinetic parameters of coal devolatilization, and to refine existing devolatilization sub-models used in comprehensive coal combustion codes. The objective of this research is to obtain data on the thermodynamic properties and morphology of coal under conditions of rapid heating. Specifically, the total heat of devolatilization, external surface area, BET surface area and true density will be measured for representative coal samples. In addition, for one coal, the contribution of each of the following components to the overall heat of devolatilization will be measured: the specific heat of coal/char during devolatilization, the heat of thermal decomposition of the coal, the specific heat capacity of tars, and the heat of vaporization of tars. Morphological characterization of the parent coal samples has been completed by the University of Pittsburgh. Results are presented for true density, CO{sub 2} surface area, mercury porosimetry, and particle size and shape measurements using image analysis. The heat of thermal decomposition of PSOC 1451D (Task 5) will be calculated from the data reported here. The Task 10 effort, Morphological Characterization of Coal/Char Samples as a Function of Extent of Devolatilization, will continue at the University of Pittsburgh. Work will focus on measurement of the morphological characteristics of the char samples as a function of extent of reaction.

Proscia, W.M.; Freihaut, J.D.

1993-07-01T23:59:59.000Z

326

Fundamental limits and insights: from wireless communication to DNA sequencing  

E-Print Network (OSTI)

Fundamental limits and insights: from wireless communicationDavid Aldous Fall 2012 Fundamental limits and insights: fromGuy Bresler Abstract Fundamental limits and insights: from

Bresler, Guy

2012-01-01T23:59:59.000Z

327

Fundamental challenges for hybrid electrical/optical datacenter networks  

E-Print Network (OSTI)

OF CALIFORNIA, SAN DIEGO Fundamental Challenges for Hybridthe Optical Divide: Fundamental Challenges for Hy- bridthe Optical Divide: Fundamental Challenges for Hybrid

Bazzaz, Hamid Hajabdolali

2011-01-01T23:59:59.000Z

328

Large wireless networks : fundamental limits and design issues  

E-Print Network (OSTI)

wireless networks: fundamental limits and design issues Awireless networks: fundamental limits and design issues bythesis we demonstrate how fundamental questions arising in

Minero, Paolo

2010-01-01T23:59:59.000Z

329

Feedback communication systems : fundamental limits and control-theoretic approach  

E-Print Network (OSTI)

to communication with feedback: Fundamental limits and codeand P. Viswanath. Fundamentals of Wireless Communication.Communication Systems: Fundamental Limits and Control-

Ardestanizadeh, Ehsan

2010-01-01T23:59:59.000Z

330

A fundamental study on analyte adsorption onto metallophthalocyanines  

E-Print Network (OSTI)

OF CALIFORNIA, SAN DIEGO A FUNDAMENTAL STUDY ON ANALYTETHE DISSERTATION A FUNDAMENTAL STUDY ON ANALYTE ADSORPTIONof the material or on the fundamental understanding xviii of

Tran, Ngoc L.

2008-01-01T23:59:59.000Z

331

The fundamentals of configuration in face perception and discrimination  

E-Print Network (OSTI)

THE DISSERTATION The Fundamentals of Configuration in FaceCALIFORNIA, SAN DIEGO The Fundamentals of Configuration inorganization of a face are fundamental to daily human

Pallett, Pamela Mitchell

2008-01-01T23:59:59.000Z

332

Problem Sets: Fundamentals Of Transportation And Traffic Operations  

E-Print Network (OSTI)

P ROBLEM S ETS : Fundamentals of Transportation and TrafficCN-98-1 February, 1998 Fundamentals of Transportation andcomprise a supplement to Fundamentals of Transportation and

Daganzo, Carlos F.

1998-01-01T23:59:59.000Z

333

Introduction and Fundamentals: Course on Advances in Radiation  

E-Print Network (OSTI)

INTRODUCTION AMD FUNDAMENTALS: Course on Advances inUSA "Conception, my boy, fundamental brain work, is whatthat a lecture on "fundamentals" is perhaps inconsistent

Thomas, Ralph H.

2010-01-01T23:59:59.000Z

334

Local Thermodynamic Equilibrium at Three Levels  

E-Print Network (OSTI)

We present coordinated formulations of local thermodynamical equilibrium conditions at three levels, namely the macroscopic one of classical thermodynamics, the mesoscopic one of hydrodynamical fluctuations and the microscopic one of quantum statistical mechanics. These conditions are all expressed in terms of the hydrodynamical variables of the macroscopic picture, and the quantum statistical ones are shown to imply a local version of the zeroth law.

Geoffrey L. Sewell

2013-09-04T23:59:59.000Z

335

Thermodynamic Analyses of Iron Oxides Redox Reactions  

Science Conference Proceedings (OSTI)

To clarify such confusions, the elementary thermodynamic data of various iron ... and water vapor are used to calculate the changes of thermodynamic quantities such as .... Heat Transfer Characteristic in a Slag Heat Recovery Chamber ... Numerical Simulation of Electro-magnetic Flow Control Phenomenon in a Tundish.

336

Loop expansion in Yang-Mills thermodynamics  

E-Print Network (OSTI)

We argue that a selfconsistent spatial coarse-graining, which involves interacting (anti)calorons of unit topological charge modulus, implies that real-time loop expansions of thermodynamical quantities in the deconfining phase of SU(2) and SU(3) Yang-Mills thermodynamics are, modulo 1PI resummations, determined by a finite number of connected bubble diagrams.

Ralf Hofmann

2006-09-05T23:59:59.000Z

337

Light particles - A window to fundamental physics  

E-Print Network (OSTI)

In these proceedings we illustrate that light, very weakly interacting particles can arise naturally from physics which is fundamentally connected to very high energy scales. Searching for them therefore may give us interesting new insights into the structure of fundamental physics. Prime examples are the axion, and more general axion-like particles, as well as hidden sector photons and matter charged under them.

Joerg Jaeckel

2010-03-12T23:59:59.000Z

338

Symmetry, Optical Properties and Thermodynamics of Neptunium(V) Complexes  

E-Print Network (OSTI)

Rao, L. ; Teat, S.J. Thermodynamics, Optical properties andJensen, M.P. ; Nash, K.L. Thermodynamics of dioxoneptunium(Optical Properties and Thermodynamics of Neptunium(V)

Rao, Linfeng

2011-01-01T23:59:59.000Z

339

THERMODYNAMIC DATA FOR FLUE-GAS DESULFURIZATION PROCESSES  

E-Print Network (OSTI)

De Carvalho, J. Chern. Thermodynamics D. Detry, J. Drowart,Vanderzee, J. Chern. Thermodynamics ! Q,lll3-36 (1978). (43)L.G. Hepler, J. Chern. Thermodynamics~~ (45) J.E. Desnoyers,

Brewer, Leo

2013-01-01T23:59:59.000Z

340

THERMODYNAMICS OF SOLID AND LIQUID GROUP III-V ALLOYS  

E-Print Network (OSTI)

D.A. Stevenson, J. Chern. Thermodynamics, J.V. Smith, D.J.P. Bros, J. Chern. Thermodynamics, z, R. Hultgren, P.D.J.M. Prausnitz, Molecular Thermodynamics of Fluid-Phase

Anderson, T.J.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

THERMODYNAMIC DATA FOR FLUE-GAS DESULFURIZATION PROCESSES  

E-Print Network (OSTI)

N.T. Ioffe, et. al. Thermodynamic Constants of Materials,Heats and Related Thermodynamic Quan- ti ties , John W i 1 eN.P.L. Computer Analysed Thermodynamic Data: Organic and

Brewer, Leo

2013-01-01T23:59:59.000Z

342

THERMODYNAMICS OF SOLID AND LIQUID GROUP III-V ALLOYS  

E-Print Network (OSTI)

Selected Values of the Thermodynamic Properties of theSelected Values of the Thermodynamic Properties of theR. Pong, M.S. Thesis, "Thermodynamic Studies of Ga-In, Ga-Sb

Anderson, T.J.

2011-01-01T23:59:59.000Z

343

Fluctuations of intensive quantities in statistical thermodynamics  

E-Print Network (OSTI)

In phenomenological thermodynamics, the canonical coordinates of a physical system split in pairs with each pair consisting of an extensive quantity and an intensive one. In the present paper, the quasi-thermodynamic fluctuation theory of a model system of a large number of oscillators is extended to statistical thermodynamics based on the idea to perceive the fluctuations of intensive variables as the fluctuations of specific extensive ones in a "thermodynamically dual" system. The extension is motivated by the symmetry of the problem in the context of an analogy with quantum mechanics which is stated in terms of a generalized Pauli problem for the thermodynamic fluctuations. The doubled Boltzmann constant divided by the number of particles plays a similar role to the Planck constant.

Artur E. Ruuge

2013-09-17T23:59:59.000Z

344

NSLS Ring Parameters  

NLE Websites -- All DOE Office Websites (Extended Search)

Ring Parameters VUV Ring Parameters X-Ray Ring Parameters Booster Ring Parameters Map of Experimental Floor (jpg)...

345

A linear nonequilibrium thermodynamics approach to optimization of thermoelectric devices  

E-Print Network (OSTI)

Improvement of thermoelectric systems in terms of performance and range of applications relies on progress in materials science and optimization of device operation. In this chapter, we focuse on optimization by taking into account the interaction of the system with its environment. For this purpose, we consider the illustrative case of a thermoelectric generator coupled to two temperature baths via heat exchangers characterized by a thermal resistance, and we analyze its working conditions. Our main message is that both electrical and thermal impedance matching conditions must be met for optimal device performance. Our analysis is fundamentally based on linear nonequilibrium thermodynamics using the force-flux formalism. An outlook on mesoscopic systems is also given.

Ouerdane, H; Apertet, Y; Michot, A; Abbout, A

2013-01-01T23:59:59.000Z

346

Overview of NASA supported Stirling thermodynamic loss research  

DOE Green Energy (OSTI)

The National Aeronautics and Space Administration (NASA) is funding research to characterize Stirling machine thermodynamic losses. NASA`s primary goal is to improve Stirling design codes to support engine development for space and terrestrial power. However, much of the fundamental data is applicable to Stirling cooler and heat pump applications. The research results are reviewed. Much has been learned about oscillating-flow hydrodynamics, including laminar/turbulent transition, and tabulated data has been documented for further analysis. Now, with a better understanding of the oscillator-flow field, it is time to begin measuring the effects of oscillating flow and oscillating pressure level on heat transfer in heat exchanger flow passages and in cylinders. This critical phase of the work is just beginning.

Tew, R.C.; Geng, S.M.

1994-09-01T23:59:59.000Z

347

Thermodynamic properties of pulverized coal during rapid heating devolatilization processes  

SciTech Connect

The thermodynamic properties of coal under conditions of rapid heating have been determined using a combination of UTRC facilities including a proprietary rapid heating rate differential thermal analyzer (RHR-DTA), a microbomb calorimeter (MBC), an entrained flow reactor (EFR), an elemental analyzer (EA), and a FT-IR. The total heat of devolatilization, was measured for a HVA bituminous coal (PSOC 1451D, Pittsburgh No. 8) and a LV bituminous coal (PSOC 1516D, Lower Kittaning). For the HVA coal, the contributions of each of the following components to the overall heat of devolatilization were measured: the specific heat of coal/char during devolatilization, the heat of thermal decomposition of the coal, the specific heat capacity of tars, and the heat of vaporization of tars. Morphological characterization of coal and char samples was performed at the University of Pittsburgh using a PC-based image analysis system, BET apparatus, helium pcynometer, and mercury porosimeter. The bulk density, true density, CO{sub 2} surface area, pore volume distribution, and particle size distribution as a function of extent of reaction are reported for both the HVA and LV coal. Analyses of the data were performed to obtain the fractal dimension of the particles as well as estimates for the external surface area. The morphological data together with the thermodynamic data obtained in this investigation provides a complete database for a set of common, well characterized coal and char samples. This database can be used to improve the prediction of particle temperatures in coal devolatilization models. Such models are used both to obtain kinetic rates from fundamental studies and in predicting furnace performance with comprehensive coal combustion codes. Recommendations for heat capacity functions and heats of devolatilization for the HVA and LV coals are given. Results of sample particle temperature calculations using the recommended thermodynamic properties are provided.

Proscia, W.M.; Freihaut, J.D. [United Technologies Research Center, E. Hartford, CT (United States); Rastogi, S.; Klinzing, G.E. [Univ. of Pittsburg, PA (United States)

1994-07-01T23:59:59.000Z

348

Thermodynamic Analysis for Energy Conservation  

E-Print Network (OSTI)

This paper describes a methodology for performing a thermodynamic analysis of a process, and it demonstrates how such a study can be useful in identifying areas in the process with the greatest potential for improvement in energy use. The basis is a typical modern ethane cracker. The processing sequence was divided into subsections and the 'lost work' of each section quantified. Combustion and radiant heat transfer in the furnaces and boilers alone result in the loss of 50% of the availability that enters the plant. Based on these data, some suggestions for significant process improvement are analyzed. For situations where entropy calculations are impractical, a generalized check list is presented which identifies areas of potential economic impact for the process developer/designer, as a partial substitute for the full analysis.

Kenney, W. F.

1981-01-01T23:59:59.000Z

349

Thermal Ground State in Yang-Mills Thermodynamics  

Science Conference Proceedings (OSTI)

We derive an a useful priori estimate for the thermal ground state of deconfining phase of SU(2) Yang-Mills thermodynamics in four-dimensional, flat spacetime and discuss its implications. Upon a selfconsistent spatial coarse-graining over noninteracting, trivial-holonomy (BPS saturated)(anti)calorons of unit topological charge modulus an inert, adjoint scalar field |{phi}| and an effective pure-gauge configuration a{sub {mu}}{sup gs} emerge. The modulus |{phi}|>0 defines the maximal resolution in the coarse-grained theory and induces dynamical gauge-symmetry breaking. Thanks to perturbative renormalizability and the fact that |{phi}| can not absorb or emit energy-momentum the effective action is local and simple. The temperature dependence of the effective coupling is a consequence of thermodynamical consistency and describes the Coulomb screening of a static test charge due to short-lived monopole-antimonopole pairs. The latter occur unresolvably as small-holonomy excitations of (anti)calorons by the absorption of propagating fundamental gauge fields.

Hofmann, Ralf [ITP, Universitaet Heidelberg, Philosophenweg 16, 69120 Heidelberg (Germany)

2011-09-22T23:59:59.000Z

350

First-Principles Calculations and Thermodynamic Modeling of the ...  

Science Conference Proceedings (OSTI)

Abstract Scope, The thermodynamic property of the B-C binary system is ... to limit experimental data from the literature, the finite temperature thermodynamic ...

351

The Thermodynamics of Gaseous, Cuprous Chloride Monomer and Trimer  

E-Print Network (OSTI)

No.W-7405-eng~48B TIiE THERMODYNAMICS OF GASEOUS" CUPROUSCu(s) + HCl::= I Thermodynamics of Vaporization to Monomeric

Brewer, Leo

2010-01-01T23:59:59.000Z

352

The Fundamental Scaling Relations of Elliptical Galaxies  

E-Print Network (OSTI)

(ABRIDGED) We examine the fundamental scaling relations of elliptical galaxies formed through mergers. Using hundreds of simulations to judge the impact of progenitor galaxy properties on merger remnants, we find that gas dissipation provides an important contribution to tilt in the Fundamental Plane relation. Dissipationless mergers of disks produce remnants that occupy the virial plane. As the gas content of disk galaxies is increased, the tilt of the Fundamental Plane relation increases and the slope of the Re-M_* relation steepens. For gas fractions fgas > 30%, the simulated Fundamental Plane scalings approach those observed in the K-band. In our simulations, feedback from supermassive black hole growth has only a minor influence on the stellar-mass scaling relations of spheroidal galaxies, but may play a role in maintaining the observed Fundamental Plane tilt at optical wavelengths by suppressing residual star formation in merger remnants. We estimate that \\approx 40-100% of the Fundamental Plane tilt induced by structural properties owes to trends in the central total-to-stellar mass ratio M_total/M_* produced by dissipation. Lower mass systems obtain greater phase- space densities than higher mass systems, producing a galaxy mass-dependent central M_total/M_* and a corresponding tilt in the Fundamental Plane.

B. Robertson; T. J. Cox; L. Hernquist; M. Franx; P. F. Hopkins; P. Martini; V. Springel

2005-11-01T23:59:59.000Z

353

NIST Fundamental Constants Data Center - Tech. Act. 2000  

Science Conference Proceedings (OSTI)

... Fundamental Constants Data Center. ... Mission. The FCDC mission is to: provide an international information center on the fundamental constants; ...

354

MS&T '04 Volume 2: Continuous Casting Fundamentals, Engineered  

Science Conference Proceedings (OSTI)

Continuous Casting Fundamentals I – Initial Solidification and Interfacial .... Continuous Casting Fundamentals II – Mold Fluid Flow and Water Spray Cooling.

355

Modeling of fundamental phenomena in welds  

Science Conference Proceedings (OSTI)

Recent advances in the mathematical modeling of fundamental phenomena in welds are summarized. State-of-the-art mathematical models, advances in computational techniques, emerging high-performance computers, and experimental validation techniques have provided significant insight into the fundamental factors that control the development of the weldment. The current status and scientific issues in the areas of heat and fluid flow in welds, heat source metal interaction, solidification microstructure, and phase transformations are assessed. Future research areas of major importance for understanding the fundamental phenomena in weld behavior are identified.

Zacharia, T.; Vitek, J.M. [Oak Ridge National Lab., TN (United States); Goldak, J.A. [Carleton Univ., Ottawa, Ontario (Canada); DebRoy, T.A. [Pennsylvania State Univ., University Park, PA (United States); Rappaz, M. [Ecole Polytechnique Federale de Lausanne (Switzerland); Bhadeshia, H.K.D.H. [Cambridge Univ. (United Kingdom)

1993-12-31T23:59:59.000Z

356

Thermodynamics, Optical Properties and Coordination Modes of Np(V) with Dipicolinic Acid  

E-Print Network (OSTI)

Thermodynamics, Optical Properties and Coordination Modes ofacid, complexation, thermodynamics, coordination mode 1.

Tian, Guoxin

2010-01-01T23:59:59.000Z

357

Fundamental Physics Highlights | Neutron Science | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamental Physics Fundamental Physics SHARE Fundamental Physics Highlights 1-3 of 3 Results Neutron experiments give unprecedented look at quantum oscillations October 23, 2012 - Researchers at the Department of Energy's Oak Ridge National Laboratory have found that nitrogen atoms in the compound uranium nitride exhibit unexpected, distinct vibrations that form a nearly ideal realization of a physics textbook model known as the isotropic quantum harmonic oscillator. Beam Line 13 Fuels Discovery Fever for Fundamental Physicists June 01, 2011 - Kucuker Dogan (left) and Matthew Musgrave prepare a helium-3 cooling cell that is used to measure the angle at which the neutron beam strikes the liquid hydrogen sample. Fast Proton Hopping in Ice (Ih) Confirmed by Quasi-Elastic Neutron

358

The Fundamentals of Forensic Investigation Procedures Guidebook  

Science Conference Proceedings (OSTI)

No reference or guideline for the practice of or procedure for analyzing equipment failures and accidents involving electric utility distribution systems has been available until publication of "The Fundamentals of Forensic Investigation Procedures Guidebook."

2003-03-18T23:59:59.000Z

359

Group homology and ideal fundamental cycles.  

E-Print Network (OSTI)

We prove that the group-homological version of the generalized Goncharov invariant of finite-volume locally rank one symmetric spaces determines their generalized Neumann-Yang invariant, which is defined using ideal fundamental cycles.

Thilo Kuessner.; Volume 40 (2012); Pages 239-258

360

Resistance Welding: Fundamentals and Applications - TMS  

Science Conference Proceedings (OSTI)

Apr 5, 2006 ... If you are seeking welding basics, then this is the book for you. It covers the fundamentals of resistance spot welding (RSW) and applies them in ...

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Free Material Optimization with Fundamental Eigenfrequency ...  

E-Print Network (OSTI)

‡School of Mathematics, University of Birmingham, Edgbaston Birmingham B15 2TT, UK, and In- stitute of Information ..... The square root of the smallest well- defined eigenvalue will be called fundamental ...... Handbook on Semidefinite Pro-.

362

DOE fundamentals handbook: Nuclear physics and reactor theory. Volume 1  

Science Conference Proceedings (OSTI)

The Nuclear Physics and Reactor Theory Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of nuclear physics and reactor theory. The handbook includes information on atomic and nuclear physics; neutron characteristics; reactor theory and nuclear parameters; and the theory of reactor operation. This information will provide personnel with a foundation for understanding the scientific principles that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

363

DOE fundamentals handbook: Nuclear physics and reactor theory  

SciTech Connect

The Nuclear Physics and Reactor Theory Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of nuclear physics and reactor theory. The handbook includes information on atomic and nuclear physics; neutron characteristics; reactor theory and nuclear parameters; and the theory of reactor operation. This information will provide personnel with a foundation for understanding the scientific principles that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

364

DOE fundamentals handbook: Nuclear physics and reactor theory. Volume 2  

SciTech Connect

The Nuclear Physics and Reactor Theory Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of nuclear physics and reactor theory. The handbook includes information on atomic and nuclear physics; neutron characteristics; reactor theory and nuclear parameters; and the theory of reactor operation. This information will provide personnel with a foundation for understanding the scientific principles that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

365

Thermodynamic and cost optimization using program GEOTHM  

SciTech Connect

Some of the features of the computer program GEOTHM are shown. This program designs and optimizes thermodynamic process cycles. Several examples of geothermal cycle optimization are given. Three dimensional plots generated by the computer show how the optimization process works.

Green, M.A.; Pines, H.A.; Pope, W.L.; Williams, J.D.

1977-04-01T23:59:59.000Z

366

The Solvent Mediated Thermodynamics of Cellulose Deconstruction  

E-Print Network (OSTI)

4.2 Methods Following reference 14, dissolution of aby the 2PT method, , and the total dissolution entropy withDissolution Entropy The two-phase thermodynamic (2PT) method

Gross, Adam S

2012-01-01T23:59:59.000Z

367

Thermodynamics of Eastern Mediterranean Rainfall Variability  

Science Conference Proceedings (OSTI)

This note focuses on thermodynamic changes caused by Eastern Mediterranean (EM) subsidence anomalies. Subsidence anomalies are shown to modulate EM-wide stability with respect to moist ascent. Additionally, convective available potential energy (...

Gidon Eshel; Brian F. Farrell

2001-01-01T23:59:59.000Z

368

Linear Thermodynamics of Rodlike DNA Filtration  

E-Print Network (OSTI)

Linear thermodynamics transportation theory is employed to study filtration of rodlike DNA molecules. Using the repeated nanoarray consisting of alternate deep and shallow regions, it is demonstrated that the complex ...

Li, Zirui

369

QCD Thermodynamics on the Lattice: Recent Results  

E-Print Network (OSTI)

I give a brief introduction to the goals, challenges, and technical difficulties of lattice QCD thermodynamics and present some recent results from the HotQCD collaboration for the crossover temperature, equation of state, and other observables.

Carleton DeTar

2010-12-31T23:59:59.000Z

370

Thermodynamic Aspects of Tropical Cyclone Formation  

Science Conference Proceedings (OSTI)

The thermodynamic aspects of tropical cyclone (TC) formation near the center of the wave pouch, a region of approximately closed Lagrangian circulation within the wave critical layer, are examined through diagnoses of a high-resolution numerical ...

Zhuo Wang

2012-08-01T23:59:59.000Z

371

Thermodynamic Properties of Acetic Acid + Hydrocarbons ...  

Science Conference Proceedings (OSTI)

Thermodynamic Properties of Acetic Acid + Hydrocarbons Mixtures L. Negadi1,C,S, N. Ainous2, A. Negadi1, I. Mokbel2, A. Kaci3 and J. Jose2 ...

2006-07-20T23:59:59.000Z

372

Radiation and the Irreversible Thermodynamics of Climate  

Science Conference Proceedings (OSTI)

Attempts to link the theory of irreversible thermodynamics to the study of climate have utilized an entity which has been identified as the entropy production rate. However, this entity does not properly account for irreversibility due to the ...

Christopher Essex

1984-06-01T23:59:59.000Z

373

Cloud Thermodynamic Models in Saturation Point Coordinates  

Science Conference Proceedings (OSTI)

One-dimensional thermodynamic models for cloud-environment mixing, evaporation into downdrafts and precipitation from updrafts are presented in a parallel treatment using convective pressure scales and saturation point coordinates. This common ...

Alan K. Betts

1982-10-01T23:59:59.000Z

374

Equations of Motion Using Thermodynamic Coordinates  

Science Conference Proceedings (OSTI)

The forms of the primitive equations of motion and continuity are obtained when an arbitrary thermodynamic state variable=mrestricted only to be vertically monotonic=mis used as the vertical coordinate. Natural generalizations of the Montgomery ...

Roland A. de Szoeke

2000-11-01T23:59:59.000Z

375

First Principles Contributions to the Thermodynamic Assessment...  

NLE Websites -- All DOE Office Websites (Extended Search)

temperature. Finite T Thermodynamic Predictions The total Gibbs free energy of a stoichiometric compound is determined as: (0 K) calculation. The E vib (T) and S vib (T) are...

376

STATTHERM: a statistical thermodynamics program for calculating thermochemical information  

DOE Green Energy (OSTI)

A statistical thermodynamics program is presented which computes the thermochemical properties of a polyatomic molecule using statistical thermodynamic formulas. Thermodynamic data for substances involving C, H,O,N, and Cl elements are fitted into NASA polynomial form for use in combustion research or research where thermodynamical information is important.

Marinov, N.M.

1997-03-01T23:59:59.000Z

377

Thermodynamic restrictions on mechanosynthesis of strontium titanate  

SciTech Connect

Chemical potential phase stability diagrams were calculated from relevant thermodynamic properties and used to predict the thermodynamic driving force under prospective conditions of room temperature mechanosynthesis. One analysed the dependence of chemical potential diagrams on temperature and partial pressure of evolving gases such as oxygen or carbon dioxide, as expected on using strontium peroxide or strontium carbonate as precursor reactants for the alkali earth component. Thermodynamic calculations were also obtained for changes in titania precursor reactants, including thermodynamic predictions for reactivity of strontium carbonate with amorphous titania. Experimental evidence showed that strontium titanate can be obtained by mechanosynthesis of strontium carbonate+anatase mixtures, due to previous amorphization under high energy milling. Ability to perform mechanosynthesis with less energetic milling depends on the suitable choice of alternative precursor reactants, which meet the thermodynamic requirements without previous amorphization; this was demonstrated by mechanosynthesis from anatase+strontium peroxide mixtures. - Graphical abstract: X-Ray diffractograms of the starting TiO{sub 2} (anatase)+SrCO{sub 3} mixture and after mechanical activation at 650 rpm, for 1, 2, and 7 h. Different symbols are used to identify reflections ascribed to anatase (diamonds), SrCO{sub 3} (squares) and SrTiO{sub 3} (triangles). Highlights: Black-Right-Pointing-Pointer Prediction of thermodynamic driving force for room temperature mechanosynthesis. Black-Right-Pointing-Pointer Dependence of chemical potential diagrams on temperature and partial pressure. Black-Right-Pointing-Pointer Thermodynamic calculations for changes in titania precursor. Black-Right-Pointing-Pointer Experimental support for thermodynamic predictions.

Monteiro, J.F. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Ferreira, A.A.L. [Instituto Politecnico de Viana do Castelo, 4900-347 Viana do Castelo (Portugal); Antunes, I. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Fagg, D.P., E-mail: duncan@ua.pt [Centro de Tecnologia Mecanica e Automacao, Departamento de Engenharia Mecanica, Universidade de Aveiro, 3810-193 Aveiro (Portugal); Frade, J.R. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)

2012-01-15T23:59:59.000Z

378

Thermodynamics of (2+1)-flavor QCD  

E-Print Network (OSTI)

We report on the status of our QCD thermodynamics project. It is performed on the QCDOC machine at Brookhaven National Laboratory and the APEnext machine at Bielefeld University. Using a 2+1 flavor formulation of QCD at almost realistic quark masses we calculated several thermodynamical quantities. In this proceeding we show the susceptibilites of the chiral condensate and the Polyakov loop, the static quark potential and the spatial string tension.

C. Schmidt; T. Umeda

2006-09-21T23:59:59.000Z

379

Thermodynamic potential for compactified bosonic strings  

E-Print Network (OSTI)

We discuss the inclusion of chemical potentials of the Kaluza-Klein charges in the partition function of the bosonic string with a compactified dimension on a circle. The construction of the thermodynamic potential is achieved by the path integral method at one-loop level. Duality symmetry in the dependence on compactification scale is examined. A modular-invariant expression for the thermodynamic potential is also presented.

Kiyoshi Shiraishi

2013-08-06T23:59:59.000Z

380

THERMODYNAMICS OF (2+1)-FLAVOR QCD.  

SciTech Connect

We report on the status of our QCD thermodynamics project. It is performed on the QCDOC machine at Brookhaven National Laboratory and the APEnext machine at Bielefeld University. Using a 2 + 1 flavor formulation of QCD at almost realistic quark masses we calculated several thermodynamical quantities. In this proceeding we show the susceptibilities of the chiral condensate and the Polyakov loop, the static quark potential and the spatial string tension.

SCHMIDT, C.; UMEDA, T.

2006-10-10T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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
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381

Thermodynamics of space quanta models quantum gravity  

E-Print Network (OSTI)

Canonically quantized 3+1 general relativity with the global one dimensionality (1D) conjecture defines the model, which dimensionally reduced and secondary quantized yields the 1D quantum field theory wherein generic one-point correlations create physical scales. This simple quantum gravity model, however, can be developed in a wider sense. In this paper we propose to consider ab initio thermodynamics of space quanta as the quantum gravity phenomenology. The thermodynamics is constructed in the entropic formalism.

L. A. Glinka

2009-06-20T23:59:59.000Z

382

Study on flow parameters optimisation for marine gas turbine intercooler system based on simulation experiment  

Science Conference Proceedings (OSTI)

The thermodynamic calculation software of Intercooled-Cycle gas turbine was developed to observe the impacts that the environmental parameters and cold degrees of intercooler produce quantitatively on this marine engine performance. And then, the mathematical ...

Yu-long Ying; Yun-peng Cao; Shu-ying Li; Zhi-tao Wang

2013-06-01T23:59:59.000Z

383

Constraints on quintessence and new physics from fundamental constant  

E-Print Network (OSTI)

Changes in the values of the fundamental constants mu, the proton to electron mass ratio, and alpha, the fine structure constant due to rolling scalar fields have been discussed both in the context of cosmology and in new physics such as Super Symmetry (SUSY) models. This article examines the changes in these fundamental constants in a particular example of such fields, freezing and thawing slow roll quintessence. Constraints are placed on the product of a cosmological quantity, w, the equation of state parameter, and the square of the coupling constants for mu and alpha with the field, zeta_x, x = mu,alpha, using the existing observational limits on the values of Delta x/x. Various examples of slow rolling quintessence models are used to further quantify the constraints. Some of the examples appear to be rejected by the existing data which strongly suggests that conformation to the values of the fundamental constants in the early universe is a standard test that should be applied to any cosmological model or suggested new physics.

Rodger I. Thompson

2012-02-17T23:59:59.000Z

384

Thermodynamics of Peptide Aggregation Processes. An Analysis from Perspectives of Three Statistical Ensembles  

E-Print Network (OSTI)

We employ a mesoscopic model for studying aggregation processes of protein-like hydrophobic-polar heteropolymers. By means of multicanonical Monte Carlo computer simulations, we find strong indications that peptide aggregation is a phase separation process, in which the microcanonical entropy exhibits a convex intruder due to nonnegligible surface effects of the small systems. We analyze thermodynamic properties of the conformational transitions accompanying the aggregation process from the multicanonical, canonical, and microcanonical perspective. It turns out that the microcanonical description is particularly advantageous as it allows for unraveling details of the phase-separation transition in the thermodynamic region, where the temperature is not a suitable external control parameter anymore.

Christoph Junghans; Michael Bachmann; Wolfhard Janke

2007-12-06T23:59:59.000Z

385

Complementary role of the pressure in the black hole thermodynamics  

E-Print Network (OSTI)

In black hole thermodynamics of certain models, the thermodynamic first law may contain the pressure term. The corresponding entropy follows the area law whereas the thermodynamic energy is not the same with the black hole mass. If the pressure can be decomposed into two parts and recombined with the original thermodynamic quantities, then the thermodynamic energy becomes the black hole mass and the entropy satisfying the area law turns out to be the corrected entropy called the Wald entropy, respectively.

Son, Edwin J

2013-01-01T23:59:59.000Z

386

Eugene Wigner and Fundamental Symmetry Principles  

NLE Websites -- All DOE Office Websites (Extended Search)

Eugene Wigner and Fundamental Symmetry Principles Eugene Wigner and Fundamental Symmetry Principles Patents · Resources with Additional Information · Wigner Honored "[Eugene P.] Wigner's great contribution to science, for which he won the Nobel Prize in Physics in 1963, was his insight into the fundamental mathematics and physics of quantum mechanics. He applied and extended the mathematical theory of groups to the quantum world of the atom; specifically, he used group theory to organize the quantum energy levels of electrons in atoms in a way that is now standard. With that mathematical approach to the atom, Wigner became one of the first to apprehend the deep implications of symmetry, which has since emerged as one, if not the, key principle of 20th-century theoretical physics. ... Eugene P. Wigner

387

Fundamental Symmetries and Interactions - Some Aspects  

E-Print Network (OSTI)

In the framework of nuclear physics and at nuclear physics facilities a large number of different experiments can be performed which render the possibility to investigate fundamental symmetries and interactions in nature. In particular, the precise measurements of properties of fundamental fermions, searches for new interactions in $\\beta$-decays, and violations of discrete symmetries have a robust discovery potential for physics beyond standard theory. Precise measurements of fundamental constants can be carried out as well. Low energy experiments allow probing of New Physics models at mass scales far beyond the reach of present accelerators or such planned for the future in the domain of high energy physics and at which predicted new particles could be produced directly.

Klaus Jungmann

2005-01-30T23:59:59.000Z

388

Fundamental understanding of matter: an engineering viewpoint  

SciTech Connect

Fundamental understanding of matter is a continuous process that should produce physical data for use by engineers and scientists in their work. Lack of fundamental property data in any engineering endeavor cannot be mitigated by theoretical work that is not confirmed by physical experiments. An engineering viewpoint will be presented to justify the need for understanding of matter. Examples will be given in the energy engineering field to outline the importance of further understanding of material and fluid properties and behavior. Cases will be cited to show the effects of various data bases in energy, mass, and momentum transfer. The status of fundamental data sources will be discussed in terms of data centers, new areas of engineering, and the progress in measurement techniques. Conclusions and recommendations will be outlined to improve the current situation faced by engineers in carrying out their work. 4 figures.

Cullingford, H.S.; Cort, G.E.

1980-01-01T23:59:59.000Z

389

Fundamental Tradeoffs on Green Wireless Networks  

E-Print Network (OSTI)

Traditional design of mobile wireless networks mainly focuses on ubiquitous access and large capacity. However, as energy saving and environmental protection become a global demand and inevitable trend, wireless researchers and engineers need to shift their focus to energy-efficiency oriented design, that is, green radio. In this paper, we propose a framework for green radio research and integrate the fundamental issues that are currently scattered. The skeleton of the framework consists of four fundamental tradeoffs: deployment efficiency - energy efficiency tradeoff, spectrum efficiency - energy efficiency tradeoff, bandwidth - power tradeoff, and delay - power tradeoff. With the help of the four fundamental tradeoffs, we demonstrate that key network performance/cost indicators are all stringed together.

Chen, Yan; Xu, Shugong; Li, Geoffrey Ye

2011-01-01T23:59:59.000Z

390

Distribution of Equilibrium Free Energies in a Thermodynamic System with Broken  

E-Print Network (OSTI)

Abstract At low temperatures the configurational phase space of a macroscopic complex system (e.g., a spin-glass) of N ? 10 23 interacting particles may split into an exponential number ?s ? exp(const × N) of ergodic sub-spaces (thermodynamic states). It is usually assumed that the equilibrium collective behavior of such a system is determined by its ground thermodynamic states of the minimal free-energy density, and that the equilibrium free energies follow the distribution of exponential decay. But actually for some complex systems, the equilibrium free-energy values may follow a Gaussian distribution within an intermediate temperature range, and consequently their equilibrium properties are contributed by excited thermodynamic states. Based on this analysis, the re-weighting parameter y in the cavity approach of spin-glasses is easily understood. Depending on the free-energy distribution, the optimal y can either be equal to or be strictly less than the inverse temperature ?.

Zhou Hai-jun; Li Kang

2007-01-01T23:59:59.000Z

391

Modeling of Geothermal Reservoirs: Fundamental Processes, Computer  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Modeling of Geothermal Reservoirs: Fundamental Processes, Computer Simulation and Field Applications Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Modeling of Geothermal Reservoirs: Fundamental Processes, Computer Simulation and Field Applications Abstract This article attempts to critically evaluate the present state of the art of geothermal reservoir simulation. Methodological aspects of geothermal reservoir modeling are briefly reviewed, with special emphasis on flow in fractured media. We then examine some applications of numerical simulation to studies of reservoir dynamics, well test design and analysis, and modeling of specific fields. Tangible impacts of reservoir simulation

392

Argonne Chemical Sciences & Engineering - Fundamental Interactions  

NLE Websites -- All DOE Office Websites (Extended Search)

* Chemical Dynamics * Chemical Dynamics * Solar Conversion Fundamental Interactions flame photosynthesis icon Chemical Dynamics Work focuses on theoretical and experimental investigation of the thermochemistry, dynamics, and kinetics of chemcial reactions in the gas phase, with a particular emphasis on reactions that are important to understanding combusion. Solar Conversion Work focuses on developing a fundamental understanding of structure-function relationships in biological photosynthesis and establishing principles for the design of biomimetic systems for solar energy conversion. Current funding for this work comes primarily from the Department of Energy Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Divisions. April 2011

393

DOE Fundamentals Handbook: Electrical Science, Volume 4  

Science Conference Proceedings (OSTI)

The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive transformers; and electrical test components; batteries; AC and DC voltage regulators; instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

Not Available

1992-06-01T23:59:59.000Z

394

DOE Fundamentals Handbook: Electrical Science, Volume 2  

SciTech Connect

The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

Not Available

1992-06-01T23:59:59.000Z

395

DOE Fundamentals Handbook: Mathematics, Volume 1  

SciTech Connect

The Mathematics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of mathematics and its application to facility operation. The handbook includes a review of introductory mathematics and the concepts and functional use of algebra, geometry, trigonometry, and calculus. Word problems, equations, calculations, and practical exercises that require the use of each of the mathematical concepts are also presented. This information will provide personnel with a foundation for understanding and performing basic mathematical calculations that are associated with various DOE nuclear facility operations.

Not Available

1992-06-01T23:59:59.000Z

396

DOE Fundamentals Handbook: Mathematics, Volume 2  

SciTech Connect

The Mathematics Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of mathematics and its application to facility operation. The handbook includes a review of introductory mathematics and the concepts and functional use of algebra, geometry, trigonometry, and calculus. Word problems, equations, calculations, and practical exercises that require the use of each of the mathematical concepts are also presented. This information will provide personnel with a foundation for understanding and performing basic mathematical calculations that are associated with various DOE nuclear facility operations.

Not Available

1992-06-01T23:59:59.000Z

397

DOE Fundamentals Handbook: Electrical Science, Volume 3  

Science Conference Proceedings (OSTI)

The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

Not Available

1992-06-01T23:59:59.000Z

398

DOE Fundamentals Handbook: Electrical Science, Volume 1  

SciTech Connect

The Electrical Science Fundamentals Handbook was developed to assist nuclear facility operating contractors provide operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of electrical theory, terminology, and application. The handbook includes information on alternating current (AC) and direct current (DC) theory, circuits, motors, and generators; AC power and reactive components; batteries; AC and DC voltage regulators; transformers; and electrical test instruments and measuring devices. This information will provide personnel with a foundation for understanding the basic operation of various types of DOE nuclear facility electrical equipment.

Not Available

1992-06-01T23:59:59.000Z

399

Fundamental and effective Yang-Mills vertices  

SciTech Connect

Calorons and plane waves within and in between them collectively give rise to a thermal ground state. The latter provides a homgeneous energy density and a negative pressure, and it induces quasiparticle masses to part of the propagating spectrum of deconfining SU(2) Yang-Mills thermodynamics (dynamical gauge-symmetry breaking). In the present talk we discuss the role of a single caloron in inducing effective local vertices, characterized by powers of h, mediating the interaction of plane waves which propagate over large distances. The constraints on momentum transfers through effective 4-vertices are revisited.

Hofmann, Ralf [ITP, Universitaet Heidelberg, Philosophenweg 16, 69120 Heidelberg (Germany)

2012-09-26T23:59:59.000Z

400

Using ARM TWP Nauru Observations to Evaluate a Simple Thermodynamic Model  

NLE Websites -- All DOE Office Websites (Extended Search)

Using ARM TWP Nauru Observations to Evaluate a Simple Thermodynamic Model Using ARM TWP Nauru Observations to Evaluate a Simple Thermodynamic Model of the Subcloud Layer Under Fair-Weather Cumulus Conditions Albrecht, Bruce University of Miami Kollias, Pavlos Brookhaven National Laboratory Category: Modeling Marine boundary layer clouds are fundamental in regulating the vertical structure of water vapor and entropy in the lowest 2 km of the Earth's atmosphere. The observations from the ARM TWP-Nauru site provide a unique opportunity to study these clouds and the associated boundary layer structure. In this study an atmospheric mixed layer representation of the subcloud layer for application in fair-weather cumulus regimes is used to develop a diagnostic model of the near surface temperature and moisture associated with a given surface temperature and wind speed. This model

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

Thermodynamics of quantum jump trajectories in systems driven by classical fluctuations  

E-Print Network (OSTI)

The large-deviation method can be used to study the measurement trajectories of open quantum systems. For optical arrangements this formalism allows to describe the long time properties of the (non-equilibrium) photon counting statistics in the context of a (equilibrium) thermodynamic approach defined in terms of dynamical phases and transitions between them in the trajectory space [J.P. Garrahan and I. Lesanovsky, Phys. Rev. Lett. 104, 160601 (2010)]. In this paper, we study the thermodynamic approach for fluorescent systems coupled to complex reservoirs that induce stochastic fluctuations in their dynamical parameters. In a fast modulation limit the thermodynamics corresponds to that of a Markovian two-level system. In a slow modulation limit, the thermodynamic properties are equivalent to those of a finite system that in an infinite-size limit is characterized by a first-order transition. The dynamical phases correspond to different intensity regimes, while the size of the system is measured by the transition rate of the bath fluctuations. As a function of a dimensionless intensive variable, the first and second derivative of the thermodynamic potential develop an abrupt change and a narrow peak respectively. Their scaling properties are consistent with a double-Gaussian probability distribution of the associated extensive variable.

Adrian A. Budini

2010-12-03T23:59:59.000Z

402

Please refer to the disclaimer at the end of this document. The Fundamentals of Fundamental Factor  

E-Print Network (OSTI)

Fundamental analysis is the process of determining a security’s future value by analyzing a combination of macro and microeconomic events and company specific characteristics. Though fundamental analysis focuses on the valuation of individual companies, most institutional investors recognize that there are common factors 1 affecting all stocks. For example,

Jennifer Bender; Frank Nielsen

2010-01-01T23:59:59.000Z

403

A State Space Model of the Economic Fundamentals  

E-Print Network (OSTI)

Asset Values and Economic Fundamentals, Economics Department28, Key words: ECONOMIC FUNDAMENTALS Dynamic programming, smodel o f the economic fundamentals. In t h e o r y t h e

Craine, Roger; Bowman, David

1988-01-01T23:59:59.000Z

404

FUNDAMENTALS OF WETTING AND BONDING BETWEEN CERAMICS AND METALS  

E-Print Network (OSTI)

R. B. Adams and J. A. Pask, "Fundamentals of Glass-to-Metalapplied glass. The same fundamentals and requirements applyand R. M. Fulrath, "Fundamentals of Glass-to-Metal Bonding:

Pask, J.A.

2010-01-01T23:59:59.000Z

405

Understanding Devaluations in Latin America: A 'Bad Fundamentals' Approach  

E-Print Network (OSTI)

the changes and lags of fundamentals Eq. (6.1) Eq. (6.2)Comparing the effect of fundamentals over the full spell vs.in Latin America: A "Bad Fundamentals" Approach by Maria

Martinez Peria, Maria Soledad

1997-01-01T23:59:59.000Z

406

Asset Prices and the Fundamentals: A Q Test  

E-Print Network (OSTI)

Asset Prices and the Fundamentals: A Q Test." Roger Craine.214 Asset Prices and the Fundamentals: A Q Test Roger Craineasset values and the fundamentals. The test is an indirect

Craine, Roger

1993-01-01T23:59:59.000Z

407

201/span>3 Short Course Applied Fundamentals in Interfacial Phenomena  

Science Conference Proceedings (OSTI)

Applied Fundamentals in Interfacial Phenomena Short Course held at the 104th AOCS Annual Meeting and Expo. 201/span>3 Short Course Applied Fundamentals in Interfacial Phenomena Applied Fundamentals in Interfacial Phenomena Saturday •

408

2013 Short Course Fundamentals of Edible Oil Processing and Refining  

Science Conference Proceedings (OSTI)

Fundamentals of Edible Oil Processing and Refining Short Course held at the 104th AOCS Annual Meeting and Expo. 2013 Short Course Fundamentals of Edible Oil Processing and Refining Fundamentals of Edible Oil Processing and Refining S

409

Early Science Instruction Addressing Fundamental Issues  

E-Print Network (OSTI)

Commentary Early Science Instruction Addressing Fundamental Issues David Klahr Carnegie Mellon (Vol. Eds.), Handbook of child psychology: Vol. 4. Child psychology in practice (6th ed.). New York acquisition in foundational domains. In W. Damon (Series Ed.) & D. Kuhn & R.S. Siegler (Vol. Eds.), Handbook

Klahr, David

410

Fundamental solutions of homogeneous elliptic differential operators  

E-Print Network (OSTI)

We compute fundamental solutions of homogeneous elliptic differential operators, with constant coefficients, on $\\mathbb{R}^n$ by mean of analytic continuation of distributions. The result obtained is valid in any dimension, for any degree and can be extended to pseudodifferential operators of the same type.

Brice Camus

2005-10-31T23:59:59.000Z

411

Tate motives and the fundamental group.  

E-Print Network (OSTI)

Let k be a number field, and let S be a finite set of k-rational points of P^1. We relate the Deligne-Goncharov contruction of the motivic fundamental group of X:=P^1_k- S to the Tannaka group scheme of the category of mixed Tate motives over X.

Hélčne Esnault; Marc Levine

412

Prequantum Classical Statistical Field Theory: Fundamentals  

SciTech Connect

We present fundamentals of a prequantum model with hidden variables of the classical field type. In some sense this is the comeback of classical wave mechanics. Our approach also can be considered as incorporation of quantum mechanics into classical signal theory. All quantum averages (including correlations of entangled systems) can be represented as classical signal averages and correlations.

Khrennikov, Andrei [International Center for Mathematical Modelling in Physics and Cognitive Sciences, Linnaeus University, Vaexjoe, S-35195 (Sweden)

2011-03-28T23:59:59.000Z

413

Solution of a Linearized Model of Heisenberg's Fundamental Equation II  

E-Print Network (OSTI)

A linearized version of Heisenberg's fundamental equation is solved, and the solutions satisfy the axioms of a relativistic quantum field theory with a fundamental length.

E. Brüning; S. Nagamachi

2008-04-11T23:59:59.000Z

414

Thermodynamics of pairing in mesoscopic systems  

E-Print Network (OSTI)

Using numerical and analytical methods implemented for different models we conduct a systematic study of thermodynamic properties of pairing correlation in mesoscopic nuclear systems. Various quantities are calculated and analyzed using the exact solution of pairing. An in-depth comparison of canonical, grand canonical, and microcanonical ensemble is conducted. The nature of the pairing phase transition in a small system is of a particular interest. We discuss the onset of discontinuity in the thermodynamic variables, fluctuations, and evolution of zeros of the canonical and grand canonical partition functions in the complex plane. The behavior of the Invariant Correlational Entropy is also studied in the transitional region of interest. The change in the character of the phase transition due to the presence of magnetic field is discussed along with studies of superconducting thermodynamics.

Tony Sumaryada; Alexander Volya

2007-06-12T23:59:59.000Z

415

CORTICAL PHASE TRANSITIONS, NONEQUILIBRIUM THERMODYNAMICS AND THE TIME-DEPENDENT GINZBURG LANDAU EQUATION  

E-Print Network (OSTI)

Nonequilibrium Thermodynamics and Time-Dependent GL EquationNONEQUILIBRIUM THERMODYNAMICS AND THE TIME-DEPENDENTour attention on the thermodynamics of the nonequilibrium

Freeman, Walter J.; Livi, Robert; Obinata, Masashi; Vitiello, Giuseppe

2011-01-01T23:59:59.000Z

416

THERMODYNAMICS OF ELECTROLYTES. X. ENTHALPY AND THE EFFECT OF TEMPERATURE ON THE ACTIVITY COEFFICIENTS.  

E-Print Network (OSTI)

09 THERMODYNAMICS OFELECI'ROLYTES. X'rights. r'-" e. ct THERMODYNAMICS OF ELECTROLYTES. X.Coefficient, Electrolyte, Thermodynamics v ~p , I J ! l

Silvester, Leonard F.

2011-01-01T23:59:59.000Z

417

CHEMICAL THERMODYNAMICS OF COMPLEX SYSTEMS: FISSION PRODUCT BEHAVIOR IN LWR FUEL ELEMENTS  

E-Print Network (OSTI)

p. 59 in Proc. Symp. Thermodynamics of Nuclear MaterialsRecommended Key Values for Thermodynamics, April, 1978, ICSUMonoxide (Cs,0)," J. Chem. Thermodynamics, H. E. Flotow and

Kohli, R.

2010-01-01T23:59:59.000Z

418

Spacetime thermodynamics and subsystem observables in a kinetically constrained model of glassy systems  

E-Print Network (OSTI)

Spacetime thermodynamics and subsystem observables in aconcept of spacetime thermodynamics [3] is illus- trated indiscussion of space- time thermodynamics by considering the

Jack, Robert L.; Garrahan, Juan P.; Chandler, David

2006-01-01T23:59:59.000Z

419

Molecular Thermodynamics for Swelling of a Mesoscopic Ionomer Gel in 1:1 Salt Solutions  

E-Print Network (OSTI)

to statistical thermodynamics (Addison-Wesley Pub. Co. ,Safran, Statistical thermodynamics of surfaces, interfaces,Molecular Thermodynamics for Swelling of a Mesoscopic

Victorov, Alexey; Radke, Clayton; Prausnitz, John

2005-01-01T23:59:59.000Z

420

Thermodynamics and the role of allostery in the thrombin- thrombomodulin interaction  

E-Print Network (OSTI)

64 Chapter IV Using Thermodynamics to Probe the Allosteric81 Table 4.3. Thermodynamics of isotherms atOF CALIFORNIA, SAN DIEGO Thermodynamics and the Role of

Beach, Muneera Aina

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" 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

THERMODYNAMICS OF LOW-TEMPERATURE (700-850oC) HOT CORROSION  

E-Print Network (OSTI)

Ref. 2). J. Lumsden, Thermodynamics of molten salt mixtures,R. Defay, Chemical thermodynamics, Longmans Green and Co. ,Electrochemical Society THERMODYNAMICS OF LOW-TEMPERATURE {

Misra, A.K.

2013-01-01T23:59:59.000Z

422

Complexation of Lanthanides with Nitrate at Variable Temperatures: Thermodynamics and Coordination Modes  

E-Print Network (OSTI)

L. ; Tian, G. J. Chem. Thermodynamics 2008, 40, 1001. 24.Update on the chemical thermodynamics of uranium, neptunium,L. ; Tochiyama, O. “Chemical Thermodynamics of Compounds and

Rao, Linfeng

2009-01-01T23:59:59.000Z

423

Thermodynamics of neptunium(V) fluoride and sulfate at elevated temperatures  

E-Print Network (OSTI)

Rao, O. Tochiyama; “Chemical Thermodynamics of Compounds andUpdate on the chemical thermodynamics of uranium, neptunium,Thermodynamics of Neptunium(V) Fluoride and Sulfate at

Rao, Linfeng; Tian, Guoxin; Xia, Yuanxian; Friese, Judah I.

2006-01-01T23:59:59.000Z

424

Thermodynamic Signatures of Half-Quantum Vortices in p+ip Josephson Junction Arrays  

E-Print Network (OSTI)

OF CALIFORNIA RIVERSIDE Thermodynamic Signatures of Half-OF THE DISSERTATION Thermodynamic Signatures of Half-Quantumto leave various thermodynamic signatures accessible to the

Krahn, Graham Joel

2012-01-01T23:59:59.000Z

425

HIGH-TEMPERATURE THERMODYNAMIC ACTIVITIES OF ZIRCONIUM IN PLATINUM ALLOYS DETERMINED BY NITROGEN-NITRIDE EQUILIBRIA  

E-Print Network (OSTI)

are available on the thermodynamic properties of non-with values of the thermodynamic data for Zr and N2 yieldis crucial because their thermodynamic properties vary with'

Goodman, David Alan

2010-01-01T23:59:59.000Z

426

HP-67 CALCULATOR PROGRAMS FOR THERMODYNAMIC DATA AND PHASE DIAGRAM CALCULATIONS  

E-Print Network (OSTI)

Selected Values of the Thermodynamic Properties of theI-, Estimation of Thermodynamic D.ata and Phase Diagrams. ,CALCULATOR PROGRAMS FOR THERMODYNAMIC DATA AND PHASE DIAGRAM

Brewer, Leo

2010-01-01T23:59:59.000Z

427

Thermodynamic modeling of transcription: sensitivity analysis differentiates biological mechanism from mathematical model-induced effects  

E-Print Network (OSTI)

as: Dresch et al. : Thermodynamic modeling of transcription:ARTICLE Open Access Thermodynamic modeling of transcription:on the analysis of thermodynamic models, which have been

Dresch, Jacqueline M; Liu, Xiaozhou; Arnosti, David N; Ay, Ahmet

2010-01-01T23:59:59.000Z

428

THERMODYNAMIC MODEL OF CRITICALITY IN THE CORTEX BASED ON EEG/ECOG DATA  

E-Print Network (OSTI)

CHAPTER 1 THERMODYNAMIC MODEL OF CRITICALITY IN THE CORTEXJohn Wiley & Sons, Inc. THERMODYNAMIC MODEL OF CRITICALITYoperating far from thermodynamic equilibrium. He called the

Kozma, Robert; Puljic, Marko; Freeman, Walter J III

2012-01-01T23:59:59.000Z

429

THERMODYNAMIC TABLES FOR NUCLEAR WASTE ISOLATION, V.1: AQUEOUS SOLUTIONS DATABASE  

E-Print Network (OSTI)

The NBS Tables of Thermodynamic Properties", J. Phys. Chem.Task Group on Chemical Thermodynamic Tables. D. Garvin; V.B.eds. , CODATA Series on Thermodynamic Properties, 1987.

Phillips, S.L.; Hale, F.V.; Silvester, L.F.

2008-01-01T23:59:59.000Z

430

From Carbon towards Hydrogen in the Steel Industry : Fundamental ...  

Science Conference Proceedings (OSTI)

Cellulose Acetate Membranes for CO2 Separation from Water-gas-shift Reaction ... Thermodynamic Phase Stability in Gasification Carbon Feedstock Slags ...

431

Model for the Prediction of the Hydriding Thermodynamics of Pd-Rh-Co Ternary Alloys  

DOE Green Energy (OSTI)

A dilute solution model (with respect to the substitutional alloying elements) has been developed, which accurately predicts the hydride formation and decomposition thermodynamics and the storage capacities of dilute ternary Pd-Rh-Co alloys. The effect of varying the rhodium and cobalt compositions on the thermodynamics of hydride formation and decomposition and hydrogen capacity of several palladium-rhodium-cobalt ternary alloys has been investigated using pressure-composition (PC) isotherms. Alloying in the dilute regime (<10 at.%) causes the enthalpy for hydride formation to linearly decrease with increasing alloying content. Cobalt has a stronger effect on the reduction in enthalpy than rhodium for equivalent alloying amounts. Also, cobalt reduces the hydrogen storage capacity with increasing alloying content. The plateau thermodynamics are strongly linked to the lattice parameters of the alloys. A near-linear dependence of the enthalpy of hydride formation on the lattice parameter was observed for both the binary Pd-Rh and Pd-Co alloys, as well as for the ternary Pd-Rh-Co alloys. The Pd-5Rh-3Co (at. %) alloy was found to have similar plateau thermodynamics as a Pd-10Rh alloy, however, this ternary alloy had a diminished hydrogen storage capacity relative to Pd-10Rh.

Teter, D.F.; Thoma, D.J.

1999-03-01T23:59:59.000Z

432

QCD Thermodynamics with Three Flavors of Improved Staggered Quarks  

E-Print Network (OSTI)

We report on a study of QCD thermodynamics with three flavors of quarks, using a Symanzik improved gauge action and the Asqtad O(a^2) improved staggered quark action. Simulations were carried out with lattice spacings 1/4T, 1/6T and 1/8T both for three degenerate quarks with masses less than or equal to the strange quark mass, m_s, and for degenerate up and down quarks with masses in the range 0.1 m_s \\leq m_{u,d} \\leq 0.6 m_s, and the strange quark mass fixed near its physical value. We present results for standard thermodynamics quantities, such as the Polyakov loop, the chiral order parameter and its susceptibility. For the quark masses studied to date we find a rapid crossover rather than a bona fide phase transition. We have carried out the first calculations of quark number susceptibilities with three flavors of sea quarks. These quantities are of physical interest because they are related to event-by-event fluctuations in heavy ion collision experiments. Comparison of susceptibilities at different lattice spacings show that our results are close to the continuum values.

The MILC Collaboration; C. Bernard; T. Burch; C. DeTar; Steven Gottlieb; E. B. Gregory; U. M. Heller; J. Osborn; R. Sugar; D. Toussaint

2004-05-27T23:59:59.000Z

433

Black Hole Thermodynamics and Statistical Mechanics  

E-Print Network (OSTI)

We have known for more than thirty years that black holes behave as thermodynamic systems, radiating as black bodies with characteristic temperatures and entropies. This behavior is not only interesting in its own right; it could also, through a statistical mechanical description, cast light on some of the deep problems of quantizing gravity. In these lectures, I review what we currently know about black hole thermodynamics and statistical mechanics, suggest a rather speculative "universal" characterization of the underlying states, and describe some key open questions.

Steven Carlip

2008-07-28T23:59:59.000Z

434

Local thermodynamics of a magnetized, anisotropic plasma  

SciTech Connect

An expression for the internal energy of a fluid element in a weakly coupled, magnetized, anisotropic plasma is derived from first principles. The result is a function of entropy, particle density and magnetic field, and as such plays the role of a thermodynamic potential: it determines in principle all thermodynamic properties of the fluid element. In particular it provides equations of state for the magnetized plasma. The derivation uses familiar fluid equations, a few elements of kinetic theory, the MHD version of Faraday's law, and certain familiar stability and regularity conditions.

Hazeltine, R. D.; Mahajan, S. M.; Morrison, P. J. [Department of Physics and Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712-1060 (United States)

2013-02-15T23:59:59.000Z

435

Thermodynamic nonextensivity in a closed string gas  

E-Print Network (OSTI)

Well known results in string thermodynamics show that there is always a negative specific heat phase in the microcanonical description of a gas of closed free strings whenever there are no winding modes present. We will carefully compute the number of strings in the gas to show how this negative specific heat is related to the fact that the system does not have thermodynamic extensivity. We will also discuss the consequences for a system of having a microcanonical negative specific heat versus the exact result that such a thing cannot happen in any canonical (fixed temperature) description.

Manuel A. Cobas; M. A. R. Osorio; María Suárez

2004-06-04T23:59:59.000Z

436

Thermodynamics of Dyonic Lifshitz Black Holes  

E-Print Network (OSTI)

Black holes with asymptotic anisotropic scaling are conjectured to be gravity duals of condensed matter system close to quantum critical points with non-trivial dynamical exponent z at finite temperature. A holographic renormalization procedure is presented that allows thermodynamic potentials to be defined for objects with both electric and magnetic charge in such a way that standard thermodynamic relations hold. Black holes in asymptotic Lifshitz spacetimes can exhibit paramagnetic behavior at low temperature limit for certain values of the critical exponent z, whereas the behavior of AdS black holes is always diamagnetic.

Tobias Zingg

2011-07-15T23:59:59.000Z

437

Fundamental kinetic modeling of the catalytic reforming process  

E-Print Network (OSTI)

In this work, a fundamental kinetic model for the catalytic reforming process has been developed. The complex network of elementary steps and molecular reactions occurring in catalytic reforming has been generated through a computer algorithm characterizing the various species by vectors and Boolean relation matrices. The algorithm is based on the fundamental chemistry occurring on both acid and metal sites of the catalyst. Rates are expressed for each of the elementary steps involved in the transformation of the intermediates. The Hougen-Watson approach is used to express the rates of the molecular reactions occurring on the metal sites of the catalyst. The single event approach is used to account for the effect of structure of reactant and activated complex on the rate coefficients of the elementary steps occurring on the acid sites. This approach recognizes that even if the number of elementary steps is very large they belong to a very limited number of types, and therefore it is possible to express the kinetics of elementary steps by a reduced number of parameters. In addition, the single event approach leads to rate coefficients that are independent of the feedstock, due to their fundamental chemical nature. The total number of parameters at isothermal conditions is 45. To estimate these parameters, an objective function based upon the sum of squares of the residuals was minimized through the Marquardt algorithm. Intraparticle mass transport limitations and deactivation of the catalyst by coke formation are considered in the model. Both the Wilke and the Stefan-Maxwell approaches were used to calculate the concentration gradients inside of the particle. The heterogeneous kinetic model was applied in the simulation of the process for typical industrial conditions for both axial and radial flow fixed bed reactors. The influence of the main process variables on the octane number and reformate volume was investigated and optimal conditions were obtained. Additional aspects studied with the kinetic model are the reduction of aromatics, mainly benzene. The results from the simulations agree with the typical performance found in the industrial process.

Sotelo-Boyas, Rogelio

2005-12-01T23:59:59.000Z

438

Fundamentals Explain High Crude Oil Prices  

Gasoline and Diesel Fuel Update (EIA)

6 6 Notes: One can use a simple model to deal with price/fundamental relationships. This one predicts monthly average WTI price as a function of OECD total petroleum stock deviations from the normal levels. The graph shows the model as it begins predicting prices in 1992. It shows how well the model has predicted not only the direction, but the magnitude of prices over this 8+ year period. While the model is simple and not perfect, it does predict the overall trends and, in particular, the recent rise in prices. It also shows that prices may have over-shot the fundamental balance for a while -- at least partially due to speculative concerns over Mideast tensions, winter supply adequacy, and Iraq's export policies. Prices moved lower in December, and even undershot briefly the

439

Fundamental & Applied Bioenergy | Clean Energy | ORNL  

NLE Websites -- All DOE Office Websites (Extended Search)

Bioenergy Bioenergy SHARE Fundamental and Applied Bioenergy Steven Brown (left) and Shihui Yang have developed a microbial strain with an improved ability to convert wood products to biofuel as part of research within the DOE BioEnergy Science Center.Source: ORNL News article ORNL researchers are investigating the biological mechanisms underlying production of biofuels so that those mechanisms can be improved and used to develop a new generation of efficient bioenergy strategies that will reduce U.S. dependence on foreign oil and help curb carbon emissions. Fundamental and applied bioenergy research at ORNL includes studies conducted within the BioEnergy Science Center and the following research areas: Bioconversion Science and Technology Plant-Microbe Interfaces

440

Baryogenesis and its implications to fundamental physics  

Science Conference Proceedings (OSTI)

In this talk I shall explain some basic concepts of baryogenesis and leptogenesis theory, and a new idea of experimental method of verification of fundamental ingredients of leptogenesis theory; the Majorana nature and the absolute magnitude of neutrino masses. Both of these are important to the quest of physics beyond the standard theory, and have far reaching implications irrespective of any particular medel of leptogenesis. If this new method works ideally, there is even a further possibility of detecting relic neutrinos.

Yoshimura, M. [Center of Quantum Universe and Department of Physics, Okayama University Tsushima-naka 3-1-1 Okayama 700-8530 (Japan)

2008-08-08T23:59:59.000Z

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


441

DOE fundamentals handbook: Material science. Volume 1  

SciTech Connect

The Mechanical Science Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of mechanical components and mechanical science. The handbook includes information on diesel engines, heat exchangers, pumps, valves, and miscellaneous mechanical components. This information will provide personnel with a foundation for understanding the construction and operation of mechanical components that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

442

DOE fundamentals handbook: Material science. Volume 1  

SciTech Connect

This handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of the structure and properties of metals. This volume contains the two modules: structure of metals (bonding, common lattic types, grain structure/boundary, polymorphis, alloys, imperfections in metals) and properties of metals (stress, strain, Young modulus, stress-strain relation, physical properties, working of metals, corrosion, hydrogen embrittlement, tritium/material compatibility).

Not Available

1993-01-01T23:59:59.000Z

443

DOE fundamentals handbook: Mechanical science. Volume 2  

SciTech Connect

The Mechanical Science Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of mechanical components and mechanical science. The handbook includes information diesel engines, heat exchangers, pumps, valves, and miscellaneous mechanical components. This information will provide personnel with a foundation for understanding the construction and operation of mechanical components that are associated with various DOE nuclear facility operations and maintenance.

Not Available

1993-01-01T23:59:59.000Z

444

Some Aspects of Fundamental Symmetries and Interactions  

E-Print Network (OSTI)

The known fundamental symmetries and interactions are well described by the Standard Model. Features of this powerful theory, which are described but not deeper explained, are addressed in a variety of speculative models. Experimental tests of the predictions in such approaches can be either through direct observations at the highest possible accelerator energies or through precision measurements in which small deviations from calculated values within the Standard Model are searched for. Antiproton physics renders a number of possibilities to search for new physics.

Klaus P. Jungmann

2005-12-10T23:59:59.000Z

445

Engineering Fundamentals - Chemistry, Version 3.0  

Science Conference Proceedings (OSTI)

The Chemistry module of Engineering Fundamentals is intended to provide a basic overview of this topic for individuals, from all engineering disciplines, beginning their career in the nuclear power industry.The Chemistry module covers basic terms and concepts as well as their applications in nuclear power plants. This course will help new engineers understand some of the basic processes and equipment that are critical to the operation of nuclear power plants, how their job might affect ...

2012-10-25T23:59:59.000Z

446

Towards a first-principles thermodynamics of solids  

SciTech Connect

Total energy density-functional methods have made it possible to calculate, from first principles, such important properties as cohesive energies, lattice constants and elastic moduli for elemental crystals and perfectly ordered compounds. Real solids are imperfect, however, so that lattice vibrations and compositional disorder lead to entropy contributions, vibrational and configurational. When these effects are included in an appropriate manner, properties of real crystals can be computed ab initio as a function of temperature and concentration. Consequently, it is possible to obtain, virtually from the knowledge of atomic numbers alone, such basic thermodynamic properties as free energies, entropies, heats of formation, and lattice parameters for stable and metastable phases, leading, for example, to the successful computation of certain classes of phase diagrams. Recent progress in the field will be reviewed. Application is made to the Pd-Rh-V system.

de Fontaine, D.; Wolverton, C.

1992-08-01T23:59:59.000Z

447

Evaluation of AIRS cloud thermodynamic phase determination with CALIPSO  

Science Conference Proceedings (OSTI)

The Atmospheric Infrared Sounder (AIRS) infrared-based cloud thermodynamic phase retrievals are evaluated using the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) cloud thermodynamic phase. The AIRS cloud phase is ...

Hongchun Jin; Shaima L. Nasiri

448

Molecular Thermodynamic Modeling of Droplet-Type Microemulsions  

E-Print Network (OSTI)

Molecular Thermodynamic Modeling of Droplet-Type Microemulsions Livia A. Moreira and Abbas a molecular thermodynamic theory for droplet-type microemulsions, both water-in-oil and oil

Firoozabadi, Abbas

449

12.480 Thermodynamics for Geoscientists, Spring 2004  

E-Print Network (OSTI)

Principles of thermodynamics are used to infer the physical conditions of formation and modification of igneous and metamorphic rocks. Includes phase equilibria of homogeneous and heterogeneous systems and thermodynamic ...

Grove, Timothy L.

450

A Fundamental Study of the Conformational Phase Behavior ...  

Science Conference Proceedings (OSTI)

A Fundamental Study of the Conformational Phase Behavior of Chain Molecules at Interfaces. Summary: Chain molecules ...

2013-08-27T23:59:59.000Z

451

Hydrogen Production: Fundamentals and Case Study Summaries (Presentation)  

DOE Green Energy (OSTI)

This presentation summarizes hydrogen production fundamentals and case studies, including hydrogen to wind case studies.

Harrison, K.; Remick, R.; Hoskin, A.; Martin, G.

2010-05-19T23:59:59.000Z

452

Thermodynamics of Actinide-based Nuclear Fuels  

Science Conference Proceedings (OSTI)

Symposium, Phase Stability, Diffusion, Kinetics and their Applications (PSDK-VIII) ... Financial support from the LLNL LDRD program under project 12-SI-008 is gratefully ... An Atomistic Study of the Structure and Thermodynamics of Molten- salt Mixtures ... Calorimetric Investigations of Liquid Co-Sn and Co-Li-Sn Alloys.

453

A thermodynamic switch for chromosome colocalization  

E-Print Network (OSTI)

A general model for the early recognition and colocalization of homologous DNA sequences is proposed. We show, on a thermodynamic ground, how the distance between two homologous DNA sequences is spontaneously regulated by the concentration and affinity of diffusible mediators binding them, which act as a switch between two phases corresponding to independence or colocalization of pairing regions.

M. Nicodemi; B. Panning; A. Prisco

2008-09-27T23:59:59.000Z

454

First law of p-brane thermodynamics  

Science Conference Proceedings (OSTI)

We study the physical process version and the equilibrium state version of the first law of thermodynamics for a charged p-brane. The general setting for our investigations is (n+p+1)-dimensional Einstein dilaton gravity with (p+2) strength form fields.

Rogatko, Marek [Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, pl. Marii Curie-Sklodowskiej 1 (Poland)

2009-08-15T23:59:59.000Z

455

Chiral thermodynamics of dense hadronic matter  

Science Conference Proceedings (OSTI)

We discuss phases of hot and dense hadronic matter using chiral Lagrangians. A two-flavored parity doublet model constrained by the nuclear matter ground state predicts chiral symmetry restoration. The model thermodynamics is shown within the mean-field approximation. A field-theoretical constraint on possible phases from the anomaly matching is also discussed.

Sasaki, C., E-mail: sasaki@fias.uni-frankfurt.de [Frankfurt Institute for Advanced Studies (Germany)

2012-05-15T23:59:59.000Z

456

Seasonally Stratified Analysis of Simulated ENSO Thermodynamics  

Science Conference Proceedings (OSTI)

Using outputs from the SINTEX-F1 coupled GCM, the thermodynamics of ENSO events and its relation with the seasonal cycle are investigated. Simulated El Nińo events are first classified into four groups depending on during which season the Nińo-...

Tomoki Tozuka; Jing-Jia Luo; Sebastien Masson; Toshio Yamagata

2007-09-01T23:59:59.000Z

457

Microscopic Derivation of an Isothermal Thermodynamic Transformation  

E-Print Network (OSTI)

We obtain macroscopic isothermal thermodynamic transformations by space-time scalings of a microscopic Hamiltonian dynamics in contact with a heat bath. The microscopic dynamics is given by a chain of anharmonic oscillators subject to a varying tension (external force) and the contact with the heat bath is modeled by independent Langevin dynamics acting on each particle. After a diffusive space-time scaling and cross-graining, the profile of volume converges to the solution of a deterministic diffusive equation with boundary conditions given by the applied tension. This defines an irreversible thermodynamic transformation from an initial equilibrium to a new equilibrium given by the final tension applied. Quasi static reversible isothermal transformations are then obtained by a further time scaling. Heat is defined as the total flux of energy exchanged between the system and the heat bath. Then we prove that the relation between the limit heat, work, free energy and thermodynamic entropy agree with the first and second principle of thermodynamics.

Stefano Olla

2013-10-02T23:59:59.000Z

458

Lattice QCD thermodynamics with Wilson quarks  

E-Print Network (OSTI)

We review studies of QCD thermodynamics by lattice QCD simulations with dynamical Wilson quarks. After explaining the basic properties of QCD with Wilson quarks at finite temperature including the phase structure and the scaling properties around the chiral phase transition, we discuss the critical temperature, the equation of state and heavy-quark free energies.

Shinji Ejiri

2007-04-27T23:59:59.000Z

459

Thermodynamics of nuclei in thermal contact  

E-Print Network (OSTI)

The behaviour of a di-nuclear system in the regime of strong pairing correlations is studied with the methods of statistical mechanics. It is shown that the thermal averaging is strong enough to assure the application of thermodynamical methods to the energy exchange between the two nuclei in contact. In particular, thermal averaging justifies the definition of a nuclear temperature.

Karl-Heinz Schmidt; Beatriz Jurado

2010-10-05T23:59:59.000Z

460

Thermodynamics of Energy Production from Biomass  

E-Print Network (OSTI)

Thermodynamics of Energy Production from Biomass Tad W. Patzek 1 and David Pimentel 2 1 Department #12;3 Biomass from Tropical Tree Plantations 14 3.1 Scope of the Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.2 Environmental Impacts of Industrial Biomass Production . . . . . . . . . . . . . . . 16 3

Patzek, Tadeusz W.

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


461

LATTICE QCD THERMODYNAMICS WITH WILSON QUARKS.  

SciTech Connect

We review studies of QCD thermodynamics by lattice QCD simulations with dynamical Wilson quarks. After explaining the basic properties of QCD with Wilson quarks at finite temperature including the phase structure and the scaling properties around the chiral phase transition, we discuss the critical temperature, the equation of state and heavy-quark free energies.

EJIRI,S.

2007-11-20T23:59:59.000Z

462

Thermodynamics and Kinetics of a Brownian Motor  

E-Print Network (OSTI)

Thermodynamics and Kinetics of a Brownian Motor R. Dean Astumian Nonequilibrium fluctuations particle separation and the design of molecular motors and pumps. A small particle in a liquid is subject in conjunction with an- isotropy to drive a motor in the context of a "ratchet and pawl" device shrunk to micro

Linke, Heiner

463

Thermodynamic properties of biphenyl: Topical report  

SciTech Connect

Ideal-gas thermodynamic properties for biphenyl based on accurate calorimetric measurements were determined between 300 and 700 K, well into the range of typical chemical process temperatures. The calorimetrically derived values provide a firm basis for the prediction of thermodynamic properties for a large family of molecular structures including many substituted biphenyls (such as PCB's) as well as polyphenyls of arbitrary size. Also, results highlighted ambiguities common in the statistical calculation of thermodynamic properties of polycyclic molecules. Critical-property measurement using a differential scanning calorimeter (DSC) showed the commonly accepted assessed value to be in error. This value serves as a ''cornerstone'' in group-contribution critical property estimation schemes, which often are employed by engineers in corresponding-states correlations for the estimation of a great variety of physical properties. Thermodynamically-consistent sublimation vapor pressures were derived to show which of the many literature values are valid; an essential step in the validification of the many reported PCB vapor-pressure measurements, which are key to environmental-impact considerations. Derived Gibbs energies of formation allow the calculation of chemical equilibria in the biphenyl/hydrogen reaction network (published in a companion report; Topical report NIPER-403), which has important ramifications in alternate fuel processing. 85 refs., 11 figs., 16 tabs.

Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Steele, W.V.

1989-06-01T23:59:59.000Z

464

Thermodynamic Control of Stoichiometry-Induced Defects in ...  

Thermodynamic Control of Stoichiometry-Induced Defects in Photovoltaic Materials Note: The technology described above is an early stage opportunity.

465

Thermodynamic Study for Cleaning Water Contaminated with Cu ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2011 TMS Annual Meeting & Exhibition. Symposium , General Poster Session. Presentation Title, Thermodynamic Study for ...

466

The Implications of Thermodynamic Models on Diffusion Simulations  

Science Conference Proceedings (OSTI)

Evaluation of the Uncertainty of Extrapolating Thermodynamic and Mobility Data in Temperature and Composition · Finding Critical Nucleus Configuration and ...

467

Thermodynamics-Based Materials Design - Programmaster.org  

Science Conference Proceedings (OSTI)

Thermodynamics-based parametric materials design integrating materials science, applied mechanics and quantum physics within a systems engineering ...

468

Nonperturbative and analytical approach to Yang-Mills thermodynamics  

E-Print Network (OSTI)

An analytical, macroscopic approach to SU(N) Yang-Mills thermodynamics is developed, tested,and applied.

Ralf Hofmann

2004-04-29T23:59:59.000Z

469

Systematic Analysis and Thermodynamic Optimizations of the binary ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , Hume-Rothery Award Symposium: Thermodynamics and Kinetics of ...

470

Thermodynamic Investigations in the Ternary Al-Ti-Cr System  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2014 TMS Annual Meeting & Exhibition. Symposium , Hume-Rothery Award Symposium: Thermodynamics and Kinetics of ...

471

Quantum correlations in the thermodynamic limit: the XY-model  

E-Print Network (OSTI)

We investigate thermal properties of quantum correlations in the thermodynamic limit with reference to the XY-model

Batle, J; Plastino, A R; Casas, M

2011-01-01T23:59:59.000Z

472

Thermodynamics of resonances and blurred particles  

E-Print Network (OSTI)

Exact and approximate expressions for thermodynamic characteristics of heated matter, which consists of particles with finite mass-widths, are constructed. They are expressed in terms of Fermi/Bose distributions and spectral functions, rather than in terms of more complicated combinations between real and imaginary parts of the self-energies of different particle species. Therefore thermodynamically consistent approximate treatment of systems of particles with finite mass-widths can be performed, provided spectral functions of particle species are known. Approximation of the free resonance gas at low densities is studied. Simple ansatz for the energy dependence of the spectral function is suggested that allows to fulfill thermodynamical consistency conditions. On examples it is shown that a simple description of dense systems of interacting particle species can be constructed, provided some species can be treated in the quasiparticle approximation and others as particles with widths. The interaction affects quasiparticle contributions, whereas particles with widths can be treated as free. Example is considered of a hot gas of heavy fermions strongly interacting with light bosons, both species with zero chemical potentials. The density of blurred fermions is dramatically increased for high temperatures compared to the standard Boltzmann value. The system consists of boson quasiparticles (with effective masses) interacting with fermion -- antifermion blurs. In thermodynamical values interaction terms partially compensate each other. Thereby, in case of a very strong coupling between species thermodynamical quantities of the system, like the energy, pressure and entropy, prove to be such as for the quasi-ideal gas mixture of quasi-free fermion blurs and quasi-free bosons.

D. N. Voskresensky

2008-04-10T23:59:59.000Z

473

A learning outcome driven cyber infrastructure for thermodynamics education  

Science Conference Proceedings (OSTI)

The Web portal TEST, the Expert System for Thermodynamics (www.thermofluids.net) is a courseware that is being used in Engineering Thermodynamics classes by more than 2000 registered educators around the world. The courseware combines a number of resources: ... Keywords: assessment, learning outcomes, problem solving, thermodynamics

Subrata Bhattacharjee; Christopher Paolini; Mahesh Kumar

2012-07-01T23:59:59.000Z

474

Thermodynamics of Ideal Gas in Doubly Special Relativity  

E-Print Network (OSTI)

We study thermodynamics of an ideal gas in Doubly Special Relativity. New type of special functions (which we call Incomplete Modified Bessel functions) emerge. We obtain a series solution for the partition function and derive thermodynamic quantities. We observe that DSR thermodynamics is non-perturbative in the SR and massless limits. A stiffer equation of state is found.

Chandra, Nitin

2011-01-01T23:59:59.000Z

475

Positive and negative entropy production in thermodynamic systems  

E-Print Network (OSTI)

This article presents a heuristic combination of the local and global formulations of the second law of thermodynamics that suggests the possibility of theoretical existence of thermodynamic processes with positive and negative entropy production.Such processes may exhibit entropy couplings that reveal an unusual behavior from the point of view of conventional thermodynamics.

Belandria, Jose Iraides

2009-01-01T23:59:59.000Z

476

Storage Ring Parameters  

NLE Websites -- All DOE Office Websites (Extended Search)

Photon Source Parameters Storage Ring Parameters Print General Parameters Parameter Value Beam particle electron Beam energy 1.9 GeV (1.0-1.9 GeV possible) Injection energy 1.9 GeV...

477

Enhancing parameter estimation of biochemical networks by exponentially scaled search steps  

Science Conference Proceedings (OSTI)

A fundamental problem of modelling in Systems Biology is to precisely characterise quantitative parameters, which are hard to measure experimentally. For this reason, it is common practise to estimate these parameter values, using evolutionary and other ...

Hendrik Rohn; Bashar Ibrahim; Thorsten Lenser; Thomas Hinze; Peter Dittrich

2008-03-01T23:59:59.000Z

478

Fundamental Structure of Matter and Strong Interaction  

SciTech Connect

More than 99% of the visible matter in the universe are the protons and neutrons. Their internal structure is mostly governed by the strong interaction. Understanding their internal structure in terms of fundamental degrees-of-freedom is one of the most important subjects in modern physics. Worldwide efforts in the last few decades have lead to numerous surprises and discoveries, but major challenges still remain. An overview of the progress will be presented with a focus on the recent studies of the proton and neutron's electromagnetic and spin structure. Future perspectives will be discussed.

Jian-Ping Chen

2011-11-01T23:59:59.000Z

479

DOE fundamentals handbook: Chemistry. Volume 1  

Science Conference Proceedings (OSTI)

The Chemistry Handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of chemistry. The handbook includes information on the atomic structure of matter; chemical bonding; chemical equations; chemical interactions involved with corrosion processes; water chemistry control, including the principles of water treatment; the hazards of chemicals and gases, and basic gaseous diffusion processes. This information will provide personnel with a foundation for understanding the chemical properties of materials and the way these properties can impose limitations on the operation of equipment and systems.

Not Available

1993-01-01T23:59:59.000Z

480

DOE fundamentals handbook: Material science. Volume 2  

Science Conference Proceedings (OSTI)

This handbook was developed to assist nuclear facility operating contractors in providing operators, maintenance personnel, and the technical staff with the necessary fundamentals training to ensure a basic understanding of the structure and properties of metals. This volume contains the following modules: thermal shock (thermal stress, pressurized thermal shock), brittle fracture (mechanism, minimum pressurization-temperature curves, heatup/cooldown rate limits), and plant materials (properties considered when selecting materials, fuel materials, cladding and reflectors, control materials, nuclear reactor core problems, plant material problems, atomic displacement due to irradiation, thermal and displacement spikes due to irradiation, neutron capture effect, radiation effects in organic compounds, reactor use of aluminum).

Not Available

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fundamental thermodynamic parameters" from the National Library of EnergyBeta (NLEBeta).
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481

Neutrino Physics: Fundamentals of Neutrino Oscillations  

E-Print Network (OSTI)

In this lecture we review some of the basic properties of neutrinos, in particular their mass and the oscillation behavior. First we discuss how to describe the neutrino mass. Then, under the assumption that neutrinos are massive and mixed, the fundamentals of the neutrino oscillations are discussed with emphasis on subtle aspects which have been overlooked in the past. We then review the terrestrial neutrino oscillation experiments in the framework of three generations of neutrinos with the standard mass hierarchy. Finally, a brief summary of the current status of the solar and atmospheric neutrino problems will be given.

C. W. Kim

1996-07-22T23:59:59.000Z

482

Charged fundamental particles in Wesson's IMT  

E-Print Network (OSTI)

In the framework of the Weyl-Dirac version of Wesson's Induced Matter Theory, spherically symmetric entities filled with an electrically charged substance are obtained in the empty 4D space-time, the brane. The substance, characterized by mass and charge density as well by pressure, is induced by the 5D bulk. The entity is separated from the surrounding vacuum by a boundary surface, where the metric satisfy the Schwarzschild conditions. Outside one has the Reissner-Nordstroem metric with M=Q. These entities may be regarded as classical (non-quantum) fundamental particles serving as constituents of quarks and leptons.

Mark Israelit

2007-10-21T23:59:59.000Z

483

Fundamental limits on NOx reduction by plasma  

Science Conference Proceedings (OSTI)

This paper discusses the gas-phase reaction mechanisms for removal of NO{sub x} in a plasma. The effect of oxygen content on the competition between the reduction and oxidation processes is discussed. The effect of the electron kinetic energy distribution on the radical production and subsequent chemistry is then discussed in order to predict the best performance that can be achieved for NO{sub x} reduction using the plasma alone. The fundamental limit on the minimum electrical energy consumption that will be required to implement NO{sub x} reduction in any type of plasma reactor is established.

Penetrante, B. M., LLNL

1997-04-07T23:59:59.000Z

484

Improved Engine Design Concepts Using the Second Law of Thermodynamics  

DOE Green Energy (OSTI)

This project was aimed at developing and using numerical tools which incorporate the second law of thermodynamics to better understand engine operation and particularly the combustion process. A major activity of this project was the continual enhancement and use of an existing engine cycle simulation to investigate a wide range of engine parameters and concepts. The major motivation of these investigations was to improve engine efficiency. These improvements were examined from both the first law and second law perspective. One of the most important aspects of this work was the identification of the combustion irreversibilities as functions of engine design and operating parameters. The combustion irreversibility may be quantified in a number of ways but one especially useful way is by determining the destruction of exergy (availability) during the combustion process. This destruction is the penalty due to converting the fuel exergy to thermal energy for producing work. The engine cycle simulation was used to examine the performance of an automotive (5.7 liter), V-8 spark-ignition engine. A base case was defined for operation at 1400 rpm, stoichiometric, MBT spark timing with a bmep of 325 kPa. For this condition, the destruction of exergy during the combustion process was 21.0%. Variations of many engine parameters (including speed, load, and spark timing) did not alter the level of destruction very much (with these variations, the exergy destruction was within the range of 20.5-21.5%). Also, the use of turbocharging or the use of an over-expanded engine design did not significantly change the exergy destruction. The exergy destruction during combustion was most affected by increased inlet oxygen concentration (which reduced the destruction due to the higher combustion temperatures) and by the use of cooled EGR (which increased the destruction). This work has demonstrated that, in general, the exergy destruction for conventional engines is fairly constant ({approx}21%) for a range of operating and design parameters. Further, to achieve high efficiency engines requires that the exergy be managed and not necessarily reduced. The overall thermodynamics is the final discriminator regarding high efficiency engines.

None

2009-09-30T23:59:59.000Z

485

Variation of fundamental constants: theory and observations  

E-Print Network (OSTI)

Review of recent works devoted to the variation of the fundamental constants is presented including atomic clocks, quasar absorption spectra, and Oklo natural nuclear reactor data. Assuming linear variation with time we can compare different results. From the quasar absorption spectra: $\\dot{\\mu}/\\mu=(1 \\pm 3) \\times 10^{-16}$ yr$^{-1}$. A combination of this result and the atomic clock results gives the best limt on variation of $\\alpha$: $\\dot{\\alpha}/\\alpha=(-0.8 \\pm 0.8) \\times 10^{-16}$ yr$^{-1}$. The Oklo natural reactor gives the best limit on the variation of $m_s/\\Lambda_{QCD}$ where $m_s$ is the strange quark mass. Huge enhancement of the relative variation effects happens in transitions between close atomic, molecular and nuclear energy levels. We suggest several new cases where the levels are very narrow. Large enhancement of the variation effects is also possible in cold atomic and molecular collisions near Feshbach resonance. Massive bodies (stars or galaxies) can also affect physical constants. They have large scalar charge $S$ proportional to number of particles which produces a Coulomb-like scalar field $U=S/r$. This leads to a variation of the fundamental constants proportional to the gravitational potential, e.g. $\\delta \\alpha/ \\alpha = k_\\alpha \\delta (GM/ r c^2)$. We compare different manifestations of this effect.The strongest limit $k_\\alpha +0.17 k_e= (-3.5\\pm 6) \\times 10^{-7}$.

V. V. Flambaum

2007-05-25T23:59:59.000Z

486

Holographic thermodynamics and transport of flavor fields.  

E-Print Network (OSTI)

??We use gauge-gravity duality to study a strongly-coupled non-Abelian gauge theory with flavor fields, i.e. fields transforming in the fundamental representation of the gauge group.… (more)

O'Bannon, Andrew Hill, 1979-

2008-01-01T23:59:59.000Z

487

Thermodynamically predicted oscillations in closed chemical systems  

E-Print Network (OSTI)

All known up to now models of chemical oscillations are based exclusively on kinetic considerations. The chemical gross-process equation is split usually by elementary steps, each step is supplied by an arrow and a differential equation, joint solution to such a construction under certain, often ad hoc chosen conditions and with ad hoc numerical coefficients leads to chemical oscillations. Kinetic perception of chemical oscillations reigns without exclusions. However, as it was recently shown by the author for the laser and for the electrochemical systems, chemical oscillations follow also from solutions to the basic expressions of discrete thermodynamics of chemical equilibria. Graphically those solutions are various fork bifurcation diagrams, and, in certain types of chemical systems, oscillations are well pronounced in the bistable bifurcation areas. In this work we describe a general thermodynamic approach to chemical oscillations as opposite to kinetic models, and depict some of their new features like s...

Zilbergleyt, B

2010-01-01T23:59:59.000Z

488

Prediction of thermodynamic properties of coal derivatives  

Science Conference Proceedings (OSTI)

The purpose of this research program is to understand and model the effect of the different intermolecular forces on the thermodynamic properties of systems containing pure compounds and mixtures. The compounds under consideration vary considerably in size, shape and energy. Therefore in order to develop a theory capable of describing accurately the thermodynamic properties and phase behavior of such systems over a wide range of temperature and pressure, one has to take into account explicitly the differences in shape and size among the various compounds as well as the different type of intermolecular interactions. In order to get a better understanding of the intermolecular forces and to test some of our recent models, we have performed considerable experimental work. We used FTIR to examine hydrogen bonding interactions between small molecules and between small molecules and polymers. In addition, we investigated experimentally the high pressure phase behavior of ternary and quaternary systems exhibiting polar and hydrogen bonding interactions.

Donohue, M.D.

1991-10-01T23:59:59.000Z

489

Thermodynamic Efficiency of Heat Exchange Devices  

E-Print Network (OSTI)

The continued rise in the cost of energy 'has it imperative to augment the usual heat flow analyses for power plants, refineries, chemical plants and other energy intensive industries by adding analyses of available energy flow and device irreversibilities. The reclamation of what was formerly 'waste heat' by using additional, or more efficient, equipment has become not only economically feasible, but sometimes essential. A thermodynamic efficiency based on the second law of thermodynamics is defined for heat exchange devices. The efficiency can be simply written in terms of the mean absolute temperature levels of the two fluids exchanging heat, and an appropriate environment temperature. It is also shown that for a given ratio of hot to cold inlet temperatures, the efficiency and effectiveness for particular heat exchange configurations are related. Conclusions regarding the effect of stream temperatures on the efficiency of various types of exchangers are made. The concept is applied to typical heat exchange cases to demonstrate its applicability and sensitivity.

Witte, L. C.; Shamsundar, N.

1982-01-01T23:59:59.000Z

490

Statistical thermodynamics of supercapacitors and blue engines  

E-Print Network (OSTI)

We study the thermodynamics of electrode-electrolyte systems, for instance supercapacitors filled with an ionic liquid or blue-energy devices filled with river- or sea water. By a suitable mapping of thermodynamic variables, we identify a strong analogy with classical heat engines. We introduce several Legendre transformations and Maxwell relations. We argue that one should distinguish between the differential capacity at constant ion number and at constant ion chemical potential, and derive a relation between them that resembles the standard relation between heat capacity at constant volume and constant pressure. Finally, we consider the probability distribution of the electrode charge at a given electrode potential, the standard deviation of which is given by the differential capacity.

René van Roij

2012-11-06T23:59:59.000Z

491

Thermodynamics of quantum informational systems - Hamiltonian description  

E-Print Network (OSTI)

It is often claimed, that from a quantum system of d levels, and entropy S and heat bath of temperature T one can draw kT(ln d -S) amount of work. However, the usual arguments based on Szilard engine are not fully rigorous. Here we prove the formula within Hamiltonian description of drawing work from a quantum system and a heat bath, at a cost of entropy of the system. We base on the derivation of thermodynamical laws and quantities in [R. Alicki, J. Phys. A, 12, L103 (1979)] within a weak coupling limit. Our result provides fully physical scenario for extracting thermodynamical work from quantum correlations [J. Oppenheim et al. Phys. Rev. Lett. 89, 180402 (2002)]. We also derive Landauer principle as a consquence of second law within the considered model.

Robert Alicki; Michal Horodecki; Pawel Horodecki; Ryszard Horodecki

2004-02-02T23:59:59.000Z

492

The second laws of quantum thermodynamics  

E-Print Network (OSTI)

The second law of thermodynamics tells us which state transformations are so statistically unlikely that they are effectively forbidden. Its original formulation, due to Clausius, states that "Heat can never pass from a colder to a warmer body without some other change, connected therewith, occurring at the same time". The second law applies to systems composed of many particles interacting; however, we are seeing that one can make sense of thermodynamics in the regime where we only have a small number of particles interacting with a heat bath. Is there a second law of thermodynamics in this regime? Here, we find that for processes which are cyclic or very close to cyclic, the second law for microscopic systems takes on a very di?erent form than it does at the macroscopic scale, imposing not just one constraint on what state transformations are possible, but an entire family of constraints. In particular, we find a family of free energies which generalise the traditional one, and show that they can never increase. We further find that there are three regimes which determine which family of second laws govern state transitions, depending on how cyclic the process is. In one regime one can cause an apparent violation of the usual second law, through a process of embezzling work from a large system which remains arbitrarily close to its original state. These second laws are not only relevant for small systems, but also apply to individual macroscopic systems interacting via long-range interactions, which only satisfy the ordinary second law on average. By making precise the definition of thermal operations, the laws of thermodynamics take on a simple form with the first law defining the class of thermal operations, the zeroeth law emerging as a unique condition ensuring the theory is nontrivial, and the remaining laws being a monotonicity property of our generalised free energies.

Fernando G. S. L. Brandao; Micha? Horodecki; Nelly Huei Ying Ng; Jonathan Oppenheim; Stephanie Wehner

2013-05-22T23:59:59.000Z

493

Thermodynamic representations of ammonia and isobutane  

DOE Green Energy (OSTI)

Tables of the thermodynamic properties of ammonia and isobutane are presented for the superheated vapor and the saturated liquid and vapor states. The properties were calculated using appropriate analytical pressure-volume-temperature (P-V-T) representations for the fluids in the regions described. The tables cover the approximate range of values of reduced temperatures up to 1.5 and reduced pressure up to 5.

Milora, S. L.; Combs, S. K.

1977-05-01T23:59:59.000Z

494

Laws of thermodynamics and game theory  

E-Print Network (OSTI)

Using a game theory approach and a new extremal problem, Gibbs formula is proved in a most simple and general way for the classical mechanics case. A corresponding conjecture on the asymptotics of the classical entropy is formulated. For the ordinary quantum mechanics case, the third law of thermodynamics is derived. Some results on the number of ground states and residual entropy are obtained rigorously.

Lev Sakhnovich

2011-05-23T23:59:59.000Z

495

ZINC MITIGATION INTERIM REPORT - THERMODYNAMIC STUDY  

Science Conference Proceedings (OSTI)

An experimental program was initiated in order to develop and validate conditions that will effectively trap Zn vapors that are released during extraction. The proposed work is broken down into three tasks. The first task is to determine the effectiveness of various pore sizes of filter elements. The second task is to determine the effect of filter temperature on zinc vapor deposition. The final task is to determine whether the zinc vapors can be chemically bound. The approach for chemically binding the zinc vapors has two subtasks, the first is a review of literature and thermodynamic calculations and the second is an experimental approach using the best candidates. This report details the results of the thermodynamic calculations to determine feasibility of chemically binding the zinc vapors within the furnace module, specifically the lithium trap (1). A review of phase diagrams, literature, and thermodynamic calculations was conducted to determine if there are suitable materials to capture zinc vapor within the lithium trap of the extraction basket. While numerous elements exist that form compounds with zinc, many of these also form compounds with hydrogen or the water that is present in the TPBARs. This relatively comprehensive review of available data indicates that elemental cobalt and copper and molybdenum trioxide (MoO3) may have the requisite properties to capture zinc and yet not be adversely affected by the extraction gases and should be considered for testing.

Korinko, P.

2010-12-17T23:59:59.000Z

496

Fundamentals of Biomass Pretreatment by Fractionation  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamentals of Biomass Pretreatment by Fractionation Poulomi Sannigrahi 1,2 and Arthur J. Ragauskas 1,2,3 1 BioEnergy Science Center, Oak Ridge, USA 2 Institute of Paper Science and Technology, Georgia Institute of Technology, Atlanta, USA 3 School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, USA 10.1 Introduction With the rise in global energy demand and environmental concerns about the use of fossil fuels, the need for rapid development of alternative fuels from sustainable, non-food sources is now well acknowledged. The effective utilization of low-cost high-volume agricultural and forest biomass for the production of transporta- tion fuels and bio-based materials will play a vital role in addressing this concern [1]. The processing of lignocellulosic biomass, especially from mixed agricultural and forest sources with varying composition,

497

Argonne Chemical Sciences & Engineering - Fundamental Interactions -  

NLE Websites -- All DOE Office Websites (Extended Search)

tranter shock tube tranter shock tube A shock tube for high temperature studies of chemical reaction kinetics. Overview The goal of this program is to develop a fundamental understanding of the elementary chemical reactions, non-reactive energy transfer processes, and coupled kinetics processes involved in combustion. The basic scientific approach is to combine a theoretical effort in the energetics, dynamics, and kinetics of chemical reactions with an experimental effort in thermochemistry, dynamics, and kinetics. Both the theoretical and experimental components of the program are vertically integrated to span a wide range of phenomena relevant to the study of chemical reactivity. This integrated approach produces synergy that results from the strong interaction between the theoretical and experimental efforts. Taken as a

498

Torsion-balance probes of fundamental physics  

E-Print Network (OSTI)

This white paper is submitted as part of Snowmass2013 (subgroup CF2). The extraordinary sensitivity of torsion-balances can be used to search for the ultra-feeble forces suggested by attempts to unify gravity with the other fundamental interactions. The motivation, the results and their implications as well as the future prospects of this work are summarized. The experiments include tests of the universality of free fall (weak equivalence principle), probes of the short-distance behavior of gravity (inverse-square law tests for extra dimensions and exchange forces from new meV scale bosons), and Planck-scale tests of Lorentz invariance (preferred-frame effects, non-commutative geometries).

E. G. Adelberger

2013-08-14T23:59:59.000Z

499

Fundamental differences between SPH and grid methods  

E-Print Network (OSTI)

We have carried out a hydrodynamical code comparison study of interacting multiphase fluids. The two commonly used techniques of grid and smoothed particle hydrodynamics (SPH) show striking differences in their ability to model processes that are fundamentally important across many areas of astrophysics. Whilst Eulerian grid based methods are able to resolve and treat important dynamical instabilities, such as Kelvin-Helmholtz or Rayleigh-Taylor, these processes are poorly or not at all resolved by existing SPH techniques. We show that the reason for this is that SPH, at least in its standard implementation, introduces spurious pressure forces on particles in regions where there are steep density gradients. This results in a boundary gap of the size of the SPH smoothing kernel over which information is not transferred.

Oscar Agertz; Ben Moore; Joachim Stadel; Doug Potter; Francesco Miniati; Justin Read; Lucio Mayer; Artur Gawryszczak; Andrey Kravtsov; Joe Monaghan; Ake Nordlund; Frazer Pearce; Vincent Quilis; Douglas Rudd; Volker Springel; James Stone; Elizabeth Tasker; Romain Teyssier; James Wadsley; Rolf Walder

2006-10-02T23:59:59.000Z

500

Fundamental Studies of Diffusion and Reactions in Hydrogen Storage Materials  

E-Print Network (OSTI)

energy production and use [1,2], but adequate hydrogen storageEnergy Fundamental studies of diffusion and reactions in hydrogen storageEnergy 010 "Fundamental studies of diffusion and reactions in hydrogen storage

Van de Walle, Chris G; Peles, Amra; Janotti, Anderson; Wilson-Short, Gareth

2008-01-01T23:59:59.000Z