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Physics

Thermodynamics

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Displaying 251 - 275 of 437

Thermodynamic properties of 1-phenylnaphthalene and 2-phenylnaphthalene

January 18, 2014
Author(s)
Robert D. Chirico, Andrei F. Kazakov, William V. Steele
Measurements leading to the calculation of thermodynamic properties in the ideal-gas state for 1- phenylnaphthalene (Chemical Abstracts registry number [605-02-7]) and 2-phenylnaphthalene (Chemical Abstracts registry number [612-94-2]) are reported

ThermoData Engine (TDE) Version 8.0 (Pure Compounds, Binary Mixtures, Ternary Mixtures, and Chemical Reactions); NIST Standard Reference Database 103b

December 31, 2013
Author(s)
Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Kenneth Kroenlein, Chris Muzny, Andrei F. Kazakov, Joe W. Magee, Ilmutdin M. Abdulagatov, Eric Lemmon
The ThermoData Engine is a software expert systems implementing the concept of dynamic data evaluation. This new release includes four important new features. (1) Implementation of the Peng-Robinson EOS for mixtures. (2) Evaluation of ideal-gas entropies

ThermoData Engine (TDE): Software Implementation of the Dynamic Data Evaluation Concept. 9. Extensible Thermodynamic Constraints for Pure Compounds and New Model Developments

November 18, 2013
Author(s)
Vladimir Diky, Robert D. Chirico, Chris D. Muzny, Andrei F. Kazakov, Kenneth G. Kroenlein, Joe W. Magee, Ilmutdin M. Abdulagatov, Michael D. Frenkel
ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported in this journal. The present article describes the background and implementation for new additions in latest release of TDE. Advances

Connection between thermodynamics and dynamics of simple fluids in highly attractive pores

October 25, 2013
Author(s)
William P. Krekelberg, Vincent K. Shen, Daniel W. Siderius, Thomas M. Truskett, Jeffrey R. Errington
We investigate the structural and diffusive dynamics properties of a model fluid in highly-absorptive cylindrical pores. At subcritical temperatures, self diffusion displays three distinct regimes as a function of average pore density ρ: 1) a decrease in

Improvement of Quality in Publication of Experimental Thermophysical Property Data: Challenges, Assessment Tools, Global Implementation, and Online Support

September 6, 2013
Author(s)
Robert D. Chirico, Michael D. Frenkel, Joe W. Magee, Vladimir Diky, Chris D. Muzny, Andrei F. Kazakov, Kenneth G. Kroenlein, Ilmutdin M. Abdulagatov, William E. Acree, Jr., Joan F. Brennecke, Paul L. Brown, Peter T. Cummings, Theodoor W. de Loos, Daniel G. Friend, Anthony R. Goodwin, Lee D. Hansen, William M. Haynes, Nobuyoshi Koga, Andreas Mandelis, K N. Marsh, Paul M. Mathias, Clare McCabe, O'Connell J. P., Agilio Padua, Vicente Rives, Christoph Schick, Martin P. Trusler, Sergey Vyazovkin, Ron D. Weir, Jiangtao Wu
This article describes a 10-year cooperative effort between the U. S. National Institute of Standards and Technology (NIST) and five major journals in the field of thermophysical and thermochemical properties to improve the quality of published reports of

New Group-Contribution Approach to Thermochemical Properties of Organic Compounds: Hydrocarbons and Oxygen-Containing Compounds

August 19, 2013
Author(s)
Michael D. Frenkel, Sergey P. Verevkin, V N. Emel'yanenko, Robert D. Chirico, Vladimir Diky, Chris D. Muzny
A new group-contribution approach involving systematic corrections for 1,4-non-bonded carbon-carbon and carbon-oxygen interactions has been proposed. Limits of the applicability of the method, associated with the highly branched structures, were

Refrigerant Properties for Heat Transfer Analysis

January 27, 2013
Author(s)
Mark O. McLinden
Presentation at 2013 Winter Annual Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), Dallas, Texas, January 27, 2013. The importance of fluid properties for heat transfer analysis in refrigeration

Thermochemistry of alpha-D-xylose(cr)

December 4, 2012
Author(s)
Robert N. Goldberg, Manuel A. Ribeiro da Silva, Maria D. Ribeiro da Silva, Ana I. Lobo Ferreira, Quan Shi, Brian F. Woodfield
The thermochemistry of alpha-D-xylose(cr) was studied by means of oxygen bomb calorimetry and a Physical Property Measurement System (PPMS) in zero magnetic field. The sample of -D-xylose(cr) used in this study was one well-characterized by HPLC, Karl

ThermoData Engine (TDE): Software Implementation of the Dynamic Data Evaluation Concept. 8. Properties of Material Streams and Solvent Design

December 3, 2012
Author(s)
Vladimir Diky, Robert D. Chirico, Chris D. Muzny, Andrei F. Kazakov, Kenneth G. Kroenlein, Joe W. Magee, Ilmutdin M. Abdulagatov, Carlos A. Diaz-Tovar, Jeong W. Kang, Rafiqul Gani, Michael D. Frenkel
ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported in this journal. The present paper describes the first application of this concept to the evaluation of thermophysical properties for

A consistent methodology to characterize BAW resonators

October 7, 2012
Author(s)
Eduard Rocas, Carlos Collado, Robert Aigner, Jordi Mateu, A Hueltes, James Booth
We present a methodology to characterize BAW resonators both linearly and nonlinearly. The procedure uses physical modeling along with measurements that exploit different manifestations of the nonlinear phenomena to identify the dominant linear and

Thermal Decomposition of 1-Pentyl Radicals at High Pressures and Temperatures

September 27, 2012
Author(s)
Andrea Comandini, Iftikhar A. Awan, Jeffrey A. Manion
Complementary shock-tube studies at the National Institute of Standards and Technology (NIST) and the University of Illinois at Chicago (UIC) have been used to examine the decomposition reactions of the 1-pentyl radical at temperatures of 833 K to 1130 K

Recommended vapor pressure and thermophysical data for ferrocene

August 14, 2012
Author(s)
Michal Fulem, Kvetoslav Ruzicka, Marisa A. Rocha, Luis M.N.B.F. Santos, Robert F. Berg
Recommended vapor pressure data for ferrocene (CAS Registry Number: 102-54-5) in the temperature range from 242 to 447 K were developed by the simultaneous correlation of critically assessed vapor pressures, heat capacities of the crystalline phase and the

Chemical and Thermophysical Characterization of 1,3,5-triisopropylcyclohexane

July 17, 2012
Author(s)
Thomas J. Bruno, Tara J. Fortin, Tara M. Lovestead, Jason A. Widegren
The complex nature of finished fuels makes definitive studies on composition and combustion properties very difficult and uncertain. This has led to the adoption of fuel surrogate mixtures in such studies. The development of a surrogate mixture is itself a

The Decomposition of 2-Pentyl and 3-Pentyl Radicals

July 15, 2012
Author(s)
Jeffrey A. Manion, Iftikhar A. Awan
The isomerization and decomposition reactions of 2-pentyl and 3-pentyl radicals have been studied in a single-pulse shock tube over a temperature range of 973 K to 1121 K and pressures of 120 kPa to 800 kPa. The results represent the first direct study of
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