Thermal pressure and energy–volume coefficients for the acetonitrile + water system

1976 ◽  
Vol 54 (17) ◽  
pp. 2813-2819 ◽  
Author(s):  
David F. Grant-Taylor ◽  
Digby D. Macdonald
Keyword(s):  
Cohesive Energy ◽  
Water System ◽  
Thermal Pressure ◽  
Pressure Coefficients ◽  
Derivatives Of

Densities and thermal pressure coefficients for the acetonitrile + water system at temperatures from 298.15 to 328.15 K are reported. These data are used to derive expansivities, energy–volume coefficients, cohesive energy densities, isothermal compressibilities, and derivatives of entropy with respect to pressure. The variation of these parameters with composition and temperature is described.

scholarly journals Calculation of Thermal Pressure Coefficient of R11, R13, R14, R22, R23, R32, R41, and R113 Refrigerants by pVT Data

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Vahid Moeini ◽  
Mahin Farzad
Keyword(s):  
Statistical Mechanics ◽  
Pressure Coefficient ◽  
Intermolecular Forces ◽  
Accurate Calculation ◽  
Thermal Pressure ◽  
Pressure Coefficients ◽  
First Order ◽  
Pvt Data ◽  
Thermodynamic Performance ◽  
Derivatives Of

For thermodynamic performance to be optimized particular attention must be paid to the fluid’s thermal pressure coefficients and thermodynamic properties. A new analytical expression based on the statistical mechanics is derived for R11, R13, R14, R22, R23, R32, R41, and R113 refrigerants, using the intermolecular forces theory. In this paper, temperature dependency of the parameters of R11, R13, R14, R22, R23, R32, R41, and R113 refrigerants to calculate thermal pressure coefficients in the form of first order has been developed to second and third orders and their temperature derivatives of new parameters are used to calculate thermal pressure coefficients. These problems have led us to try to establish a function for the accurate calculation of the thermal pressure coefficients of R11, R13, R14, R22, R23, R32, R41, and R113 refrigerants based on statistical-mechanics theory for different refrigerants.

Electron Momentum Density In Europium Using A 137Cs Compton Spectrometer

2005 ◽  
Vol 60 (7) ◽  
pp. 512-516
Author(s):  
Babu Lal Ahuja ◽  
Harsh Malhotra ◽  
Sonal Mathur
Keyword(s):  
Experimental Data ◽  
Band Structure ◽  
Gamma Rays ◽  
Free Electron ◽  
Cohesive Energy ◽  
Momentum Density ◽  
Compton Profile ◽  
Electron Momentum ◽  
Electron Models ◽  
Derivatives Of

The isotropic Compton profile of europium, the most reactive lanthanide, has been measured at a resolution of 0.40 a.u. using 661.65 keV gamma-rays. In the absence of a band structure-based Compton profile, the experimental data are compared with renormalised-free-atom (RFA) and free electron models. It is seen that the RFA model with e−-e− correlation agrees better with the experiment than the free electron models. The first derivatives of the Compton profiles show the hybridization effects of s-, p-, d-, f-electrons. From our RFA data we have also computed the cohesive energy of europium. PACS: 13.60.F, 71.15.Nc, 78.70. -g, 78.70.Ck

Thermal pressure coefficients of n-decane from 300 to 378 K

1979 ◽  
Vol 11 (5) ◽  
pp. 509-510 ◽  
Author(s):  
Ian A McLure ◽  
Alistair J Pretty
Keyword(s):  
Thermal Pressure ◽  
Pressure Coefficients

The thermal pressure coefficients and heat capacities of simple liquid metals

1979 ◽  
Vol 9 (6) ◽  
pp. 1005-1012 ◽  
Author(s):  
J M Harder ◽  
M Silbert ◽  
I Yokoyama ◽  
W H Young
Keyword(s):  
Liquid Metals ◽  
Heat Capacities ◽  
Simple Liquid ◽  
Thermal Pressure ◽  
Pressure Coefficients

Internal pressures and thermal pressure coefficients for solid polymers

1995 ◽  
Vol 58 (1) ◽  
pp. 143-146 ◽  
Author(s):  
Myung Po Seo ◽  
Boo Young Shin ◽  
Do Hung Han ◽  
Bongkee Cho
Keyword(s):  
Thermal Pressure ◽  
Pressure Coefficients ◽  
Solid Polymers ◽  
Internal Pressures

scholarly journals Absence of Global Solutions for a Fractional in Time and Space Shallow-Water System

Mathematics ◽  
2019 ◽  
Vol 7 (11) ◽  
pp. 1127 ◽  
Author(s):  
Mohamed Jleli ◽  
Mokhtar Kirane ◽  
Bessem Samet
Keyword(s):  
Shallow Water ◽  
Water System ◽  
Global Solutions ◽  
Initial Boundary ◽  
Initial Boundary Value Problem ◽  
Time And Space ◽  
Caputo Fractional Derivatives ◽  
Shallow Water System ◽  
Initial Boundary Value ◽  
Derivatives Of

An initial boundary value problem for a fractional in time and space shallow-water system involving ψ -Caputo fractional derivatives of different orders is considered. Using the test function method, sufficient criteria for the absence of global in time solutions of the system are obtained.

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