ACS Virtual Issue on Multicomponent Systems: Absorption, Adsorption, and Diffusion

Virtual issue on polymorphism.

Some phenomenological and thermodynamic aspects of diffusion in multicomponent systems

During the last twenty years diffusion coefficients have been primarily measured by light scattering and NMR techniques. Optical interferometric techniques, such as those of Gouy or Rayleigh (ref. 1). allowing direct observation of the time evolution of a diffusing boundary are not very popular at present. However, they are the only ones that give a reasonably accurate measurement of the set of...

Nmr Diffusion Measurements of Compartmentalized and Multicomponent Biological Systems

Molecular diffusion is an inherent feature of all fluid systems. The processes and interactions that characterize these systems are in some way dependent upon the mobility of the component molecules. Pulsed field-gradient spin-echo nuclear magnetic resonance (PGSE NMR) is a powerful tool for the study of molecular diffusion; for heterogeneous systems, such as those typically found in biology, t...

An ACS-Based Partitioning Method for Distributed Virtual Environment Systems

Fast Internet connections and the widespread use of high performance graphic cards are making Distributed Virtual Environment systems very common nowadays. However, there are several key issues in these systems that should still be improved in order to design a scalable and costeffective DVE system. One of these key issues is the partitioning problem. This problem consists of efficiently assign...

Multicomponent diffusion revisited

The derivation of the multicomponent diffusion law is revisited. Following Furry Am. J. Phys. 16, 63 1948 , Williams Am. J. Phys. 26, 467 1958 ; Combustion Theory, 2nd ed. Benjamin/ Cummings , Menlo Park, CA,1985 heuristically rederived the classical kinetic theory results using macroscopic equations, and pointed out that the dynamics of the mixture fluid had been assumed inviscid. This paper g...