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Chemistry

Thermochemical properties

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Displaying 651 - 675 of 781

XML-BASED IUPAC STANDARD FOR EXPERIMENTAL, PREDICTED, AND CRITICALLY EVALUATED THERMODYNAMIC PROPERTY DATA STORAGE AND CAPTURE (ThermoML): IUPAC Recommendations 2005

May 1, 2006
Author(s)
Michael D. Frenkel, Robert D. Chirico, Vladimir Diky, Qian Dong, Kenneth N. Marsh, John H. Dymond, William A. Wakeham, Stephen E. Stein, Erich Koenigsberger, Anthony R. Goodwin
ThermoML is an XML-based emerging IUPAC standard for storage and exchange of experimental, predicted, and critically evaluated thermophysical and thermochemical property data. The basic principles, scope, and description of all structural elements of

Multiparameter Equations of State for Selected Siloxanes

April 25, 2006
Author(s)
P. Colonna, R. Nannan, A. Guardone, Eric Lemmon
The development of technical equations of state using the 12-parameter Span-Wagner functional form for four siloxanes is presented in two parts. The fluids under investigation include hexamethyldisiloxane (MM), tetradecamethylhexasiloxane (MD4M)

Short Fundamental Equations of State for 20 Industrial Fluids

April 11, 2006
Author(s)
Eric W. Lemmon, Roland Span
In a preceding project, functional forms for "short" Helmholtz equations of state for typical non- and weakly polar fluids and for typical polar fluids were developed by simultaneous optimization. The coefficients of these equations of state were fitted to

Method and Apparatus for Precision In-Line Sampling of Distillate

February 26, 2006
Author(s)
Thomas J. Bruno
In this short note we present a method and a simple apparatus for use with simple, fractional and steam distillation operations in which the operator requires a precise measurement of instantaneous distillate composition as the distillation proceeds. There

The Distillation and Volatility of Ionic Liquids

February 15, 2006
Author(s)
Martyn J. Earle, Jose M. Esperanca, Manuela A. Gilea, Luis P. Rebelo, Kenneth R. Seddon, Joe W. Magee, Jason A. Widegren
The distillation of a variety of ionic liquids is demonstrated for the first time. The distillations are performed at moderate to high temperatures and at reduced pressure.

Effect of Dissolved Air on the Density and Refractive Index of Water

September 30, 2005
Author(s)
Allan H. Harvey, Simon G. Kaplan, John H. Burnett
We consider the effect of dissolved air on the density and the refractive index of liquid water from 0 ¿aC to 50 ¿aC. The density effect is calculated from the best available values of Henry's constants and partial molar volumes for the components of air

Method for Estimating the Dielectirc Constant of Natural Gas Mixtures

January 11, 2005
Author(s)
Allan H. Harvey, Eric W. Lemmon
A method is developed for calculating the static dielectric constant (relative permittivity) of fluid mixtures, with an emphasis on natural gas. The dielectric constant is calculated as a function of temperature, density, and composition; the density is

Method for estimating the dielectric constant of natural gas mixtures

January 11, 2005
Author(s)
Allan H. Harvey, Eric Lemmon
A method is developed for calculating the static dielectric constant (relative permittivity) of fluid mixtures, with an emphasis on natural gas. The dielectric constant is calculated as a function of temperature, density, and composition; the density is

Transport coefficients of the Lennard-Jones model fluid. III. Bulk viscosity

December 15, 2004
Author(s)
Karsten Meier, Arno D. Laesecke, Stephan Kabelac
In an extensive computer simulation study, the transport coefficients of the Lennard-Jones model fluid were determined with high accuracy from equilibrium molecular dynamics simulations. In the frame of time-correlation function theory, the generalized
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