Results 11 to 20 of about 1,522 (159)

Determination of the Second Virial Coefficient for Binary Mixtures of Ar with CH4 and CO using Van der Waals and Dieterici Models [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2019
In this paper, we calculate the second virial coefficient for binary mixtures of Ar with CH4 and CO in order to evaluate the performance of equations of state (EOSs).
Mohsen Najafi, Elham Marzbanpour
doaj   +1 more source

Second Virial Coefficients for Dimethyl Ether [PDF]

open access: yesJournal of Chemical & Engineering Data, 2009
Dimethyl ether (DME) is a clean and economical alternative fuel. In addition, it is also an ozone-friendly refrigerant. Burnett measurements were carried out at temperatures from (344 to 393) K and at pressures from (0.055 to 4.015) MPa. A total of 138 experimental points, taken along 15 isotherms and 12 different temperatures, were obtained.
Arteconi, A.   +3 more
openaire   +1 more source

Intermolecular model potentials and virial coefficients from acoustic data

open access: yesJournal of Applied Sciences and Environmental Management, 2018
A simple method is presented for the determination of model two- and three-body intermolecular potentials from acoustic data. The method is applied to argon, nitrogen, methane, ethane and propane.
K.O. Monago, O.T. Dawodu
doaj   +1 more source

Morse oscillator equation of state: An integral equation theory based with virial expansion and compressibility terms

open access: yesHeliyon, 2022
A number of interaction energy types are employed in the vibrations studies, especially in the spectroscopic analysis, such as the harmonic oscillator and Morse oscillator.
Marwan Al-Raeei
doaj   +1 more source

Calculation of propellant gas pressure by simple extended corresponding state principle

open access: yesDefence Technology, 2016
The virial equation can well describe gas state at high temperature and pressure, but the difficulties in virial coefficient calculation limit the use of virial equation.
Bin Xu, San-jiu Ying, Xin Liao
doaj   +1 more source

Global multi-method analysis of interaction parameters for reversibly self-associating macromolecules at high concentrations

open access: yesScientific Reports, 2021
Weak macromolecular interactions assume a dominant role in the behavior of highly concentrated solutions, and are at the center of a variety of fields ranging from colloidal chemistry to cell biology, neurodegenerative diseases, and manufacturing of ...
Arun Parupudi   +8 more
doaj   +1 more source

Second and third virial coefficients for hydrogen

open access: yesJournal of Research of the National Bureau of Standards Section A: Physics and Chemistry, 1964
Second and third virial coefficients for parahydrogen have been derived from closely spaced PVT data from 24 to 100 °K. They are in good agreement at 100 °K with published data for normal hydrogen. Analytical representations of the combined data from about 20 to 423 °K are presented which may be useful in computation of thermodynamic functions of the ...
Goodwin, R. D.   +3 more
openaire   +2 more sources

Thermophysical Properties of Light and Heavy Water from Second Virial Coefficient; Isotopic Substitution Effect [PDF]

open access: yesJournal of Nuclear Research and Applications
In this paper, some thermophysical properties of light and heavy water will be predicted and modeled using the virial equation of state (VEOS), and the effect of isotopic substitution will be studied.
M. Najafi, S. Ammari Allahyari
doaj   +1 more source

Second Virial Coefficients for Nonspherical Molecules and Their Experimental Measurements [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1991
The virial coefficients can be obtained from statistical mechanics in connection with the intermolecular potentials. The intermolecular potential of polyatomic molecules is usually assumed to consist of a spherically symmetric component plus a ...
A. Boushehri, S.H. Moosavipour
doaj  

On a Self-Consistency Thermodynamical Criterion for Equations of the State of Gases in Relativistic Frames

open access: yesEntropy, 2013
More than three decades ago, Tykodi and Hummel proposed a procedure to investigate the self-consistency thermodynamical criterion for equations of the state of gases.
Benjamín López-Carrera   +2 more
doaj   +1 more source

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