The density and temperature dependence of BULK relaxation time is studied for soft-sphere and Lennard-Jones fluids. For soft-sphere fluid, the BULK relaxation time is determined by numerical solution of the Zwanzig-Mountain equation, using the data of Hansen and Weis for the radial distribution function. The BULK relaxation time for soft sphere fluids decreases monotonically with density and increases with temperature. The BULK relaxation times of Lennard-Jones fluids are determined by numerical integration of the Zwanzig-Mountain equation with the Matteoli- Mansoori radial distribution function. For isotherms up to T* < 2.1, the density dependence of the relaxation time of Lennard-Jones fluids goes through a minimum at a reduced density of approximately 0.85.

We have obtained and presented spatially homogeneous Bianchi types II, VIII, and IX string cosmological models with BULK VISCOSITY in Nordtvedt's (Astrophys. J.161:1059, 1970) general scalar-tensor theory of gravitation with the help of a special case proposed by Schwinger. It is observed that only the BULK viscous cosmological model exists in the case of Bianchi type IX universe. Some important features of the models, thus obtained, have been discussed.

Apparently all of the Jurists and lawyers have agreed that any sale contract transfers the ownership of the thing sold, in a way that this "transfer of ownership" is considered as inherent consequence of any sale contract. However, this clarity faces with serious doubts in case of analysis of all types of sale contracts as some lawyers deny the inherent description of transferring the ownership in some kinds of sale contracts, obviously.In this essay, we are going to elaborate on this point that the sale contracts are all transferor in terms of ownership of object matter and as soon as conclusion, they apply their effect. Therefore, the existing difference between these lawyers' opinion from one side and the implication of Civil Code rules-that are based on transferring of ownership in all types of sale contracts-on the other side, raised from difference between the majority's opinion in Shi'a Jurists with other legal systems in defining the concept of "ownership tie" that the Civil Code has accepted the former one and lawyers followed the later.