摘要:

We first review analytical and computer modelling approaches to heat conduction in insulating liquids. Thermal conductivity Δ can be calculated by approximate analytic theory, and also by molecular simulation which solves the many-body problem for molecules interacting through specific interactions. Equilibrium and non-equilibrium molecular dynamics, NEMD, techniques are now available that enable Δ to be computed for single-component monatomic and molecular liquids, as well as their mixtures. For mixtures, Δ can be determined from the distinct Onsager coefficients, individually computed using equilibrium molecular dynamics. Electronic contributions to the thermal conductivity of liquid metals are then considered, by invoking the Wiedemann-Franz Law relating thermal and electrical transport.

ISSN:0031-9104    

DOI:10.1080/00319109608030547

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

A simple approach has been used to calculate the excess entropy of mixing (ΔSxs) of liquid Na-K and Na-Cs alloys as a function of concentration and temperature. The basic ingredients are the entropy of pure liquid metals and the observed volume of mixing. The temperature dependence ΔSxsfor Na-Cs is strikingly diffierent than Na-K- HΔSxsfor Na-Cs first increases withTand then starts decreasing whereas for Na-K it decreases continuously with increasingTaboveTm.

ISSN:0031-9104    

DOI:10.1080/00319109608030548

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The unconventional solution model of Mobile Order, which has previously been shown to provide a very accurate thermodynamic description of anthracene and pyrene solubilities in binary hydrocarbon+alcohol and alcohol+alcohol solvent mixtures, is extended to aqueous-alcohol solvent systems. An expression is derived for predicting the solubility of an inert crystalline solute in binary alcohol+water mixtures from measured solubilities in both neat liquid solvents plus hydrogen-bonding stability constants. Applications and limitations of the newly-derived equation are assessed using published solubility for 4-chlorobiphenyl dissolved in binary methanol+water, ethanol+water and 1-propanol+water solvent mixtures.

ISSN:0031-9104    

DOI:10.1080/00319109608030549

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Measurements of the electrical conductivity and thermoelectric power of CuInTe2in the temperature range from 400°C to 970°C shows that the thermoelectric power changes sign from positive in the solid state to negative in the liquid state above its melting point. The experimental data were explained on the basis of a model developed for the density of states and electrical transport in solid amorphous semiconductors [1]. The activation energy from electrical conductivity was found to be 0.31 ev for the solid and 0.79 ev for the liquid and the coefficient of the linear decrease of the energy gap with temperature was found to be 1.18 × 10−4ev/°K.

ISSN:0031-9104    

DOI:10.1080/00319109608030550

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Speeds of sound are measured in binary mixtures of alkyl cellosolve (2-ethoxyethanol and 2-butoxyethanol) with aliphatic alcohols at 308.15K. Aliphatic alcohols includes methanol, propan-1-ol, butan-1-ol, 2 methyl propan-1-ol, 2-methyl propan-2-ol and pentan-1-ol. Experimental sound speed data are used along with the density values to compute isentropic compressibilities in these mixtures. Deviations in isentropic compressibilities are negative in all the systems except in mixtures containing pentan-1-ol as non-common component, where as an inversion in sign of the function is observed. Further, speeds of sound are evaluated on the basis of Jacobson's free length theory and Schaff's collision factor theroy. The predicted values are in good agreement with the experimental results.

ISSN:0031-9104    

DOI:10.1080/00319109608030551

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0031-9104    

DOI:10.1080/00319109608030546

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor