it seems using the maxwell-stefan (m-s) diffusion model in combination with the vacancy solutiontheory (vst) and the single-component adsorption data provides a superior, qualitative, andquantitative prediction of diffusion in zeolites. in the m-s formulation, thermodynamic factor (г) isan essential parameter which must be estimated by an adsorption isotherm. researchers usually utilizethe simp...

I was first introduced to diffusion theory in the early 1980’s when I took a communication and social change class as part of my Ph.D. coursework. Following that course, I thought of diffusion of innovations as a theory or model that applied to situations where developed countries attempted to enact social change in undeveloped countries. At least that was the perspective that I had after my in...

In many nuclear reactor physics texts (excluding Elmer Lewis’s recent text however), “Chapter 5” is dedicated to diffusion theory; hence, the title of this submission. Here, we will investigate analytical solutions most basic form monoenergetic 1D stationary equation. The intuitive approach taken radically departs from usual method solving particular, consider a general setting such that accomm...

the option-pricing problem is always an important part in modern finance. assuming that the stock diffusion is a constant, some literature has introduced many stock models and given corresponding option pricing formulas within the framework of the uncertainty theory. in this paper, we propose a new stock model with uncertain stock diffusion for uncertain markets. some option pricing formulas on...