摘要:

By means of a toroidal oscillating viscometer, the shear viscosity of some Hg-K alloys has been measured in the composition range 10–60 atomic percent K at 320°C. Some discussion of the experimental results is given in terms of liquid coordination number.

ISSN:0031-9104    

DOI:10.1080/00319108608078504

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

In recent volumes of this Journal, Hammel 1–3 has put forward new thermodynamic arguments in defence of the old solvent tension theory of osmosis. However, as I shall try to demonstrate, Hammers radical contention is incorrect and the rest of his arguments goes by default.

ISSN:0031-9104    

DOI:10.1080/00319108608078505

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Neutron diffraction measurements have been made on a series of four CuTi molten alloy samples in order to determine the possible variation of chemical short range order (CSRO) with composition in the liquid state. The structure factor curvesS(Q) obtained all contain the characteristic pre-peak atQ≈ 1.9 Å−1which provides experimental evidence for the existence of CSRO. The degree of CSRO present has been estimated and the CSRO parameter α obtained from an analysis based on experimental and calculatedS(Q) curves. The observed variation of CSRO with composition in the liquid state follows the trends established from previous experiments and thermodynamic calculations. The CSRO is less developed in the melt than in the metallic glass phase.

ISSN:0031-9104    

DOI:10.1080/00319108608078506

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

An equation is given for the isentropic compressibility of an ideal binary solution and is used to calculate excess isentropic compressibilities of binary mixtures ofN,N-dimethylformamide with methanol, 1-propanol, 1-butanol, 1-pentanol and 1-hexanol. The results of these calculations indicate that all five binary systems exhibit negative deviations from ideality contrary to the earlier calculations of Rao and Reddy.

ISSN:0031-9104    

DOI:10.1080/00319108608078507

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

An approximate expression is given for the bridge function in the modified hypernetted chain approximation in terms of the structure factorS(k) in liquid metals. Asymptotically, it is argued that in liquid metals such as Rb with a well defined collective mode the bridge function falls off asr−4at large distances.

ISSN:0031-9104    

DOI:10.1080/00319108608078508

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

We have used established relations between a probability density, expressed as a sum of positive integrable functions, to its characteristic function, which must consequently be given by a sum of functions of positive type, to study the asymptotic behaviour—in the limitk→ 0—of the structure factors of liquidsS(k). We have illustrated this new approach by choosing examples for which the asymptotic behavior ofS(k) has been obtained using other methods.

ISSN:0031-9104    

DOI:10.1080/00319108608078509

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Recent work of Hernando prompts us to give simple derivations of relations between three-body direct and total correlation functions. These relations are then discussed in relation to the decomposition of the Ornstein-Zernike two body functionc(r) into ‘potential’ and ‘cooperative’ parts. Illustrations are referred to for the two-dimensional plasma and for critical point behaviour.

ISSN:0031-9104    

DOI:10.1080/00319108608078510

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Experimental data for sound velocity and isentropic compressibility in binary mixtures of 1,1,2,2-tetrachloroethane with n-hexane,n-heptane,n-octane andn-nonane are reported at 303.15 and 313.15 K. Sound velocities have been analysed in terms of free length theory and collision factor theory. All the systems exhibited negative ΔKSvalues.

ISSN:0031-9104    

DOI:10.1080/00319108608078511

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Analysis of the spectra of Praseodymium nitrate mixed with organic complexes such as Glutamic, l Aspartic and Maleic acids has been carried out from UV to NIR regions. About six energy levels for Pr3+in all the three hosts have been measured and assigned to the appropriate electronic transitions. By applying the Judd-Ofelt theory, the absorption band intensities and lifetimes of the electronic states3P1,0and1D2have been computed theoretically.

ISSN:0031-9104    

DOI:10.1080/00319108608078512

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The paper, “Solubility and Enhanced Tension of Solute in Solution,” by H. T. Hammel, describes solution properties in terms of “tension” between solute molecules. While the utility of this approach over conventional thermodynamics is certainly debatable, this comment will deal primarily with the thermodynamic validity of several equations contained in that paper.

ISSN:0031-9104    

DOI:10.1080/00319108608078513

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor