摘要:

A previous generalization of the Percus-Yevick (PY) and hypernetted chain (HNC) equations for simple fluids, involving a density- and temperature-dependent coefficientm, is extended by including a spatial dependence inm.The new approximation yields an exact fourth virial coefficient and, by further requirement, a consistent equation of state from both the virial and compressibility forms. Comparison of calculated results for the hard sphere potential shows an improvement over the PY, HNC, and previous pressure-consistent equations

ISSN:0031-9104    

DOI:10.1080/00319107208084090

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

When molecules of chemical compounds are represented by graphs, thermodynamic properties may be connected with numbers of certain classes of walks on graphs. The basic proposition of summing up contributions resulting from interactions of walks is related to fluid distribution functions. The principle of corresponding volumes and structural schemes are discussed. Exemplary calculations for normal alkanes and their binary mixtures give in many cases values within limits of the experimental accuracy

ISSN:0031-9104    

DOI:10.1080/00319107208084091

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor

摘要:

The electrical resistivity of liquid lead was measured between its freezing point,tF= 327.5 and 800°C with a relative accuracy better than 2.5 × 10−2%. The resistivity was found to be a concave function of temperature of the formp(X)=a1.X+a2.[1 - exp(-a3.X)] +po, whereX=t-tF, in the whole range studied. The temperature coefficient of resistivity is a continuous and decreasing function of temperature. A possible explanation of the observed phenomenon is suggested

ISSN:0031-9104    

DOI:10.1080/00319107208084092

出版商:Taylor & Francis Group    

年代:1972

数据来源: Taylor