A stochastic model of force diffusion,which was well consistent with the experiment,was developed.

Carbon activity sites, inherent catalysts and diffusivity of the reactant gases within the pores of the chars played key role in the gasification process.

The experimental results show that steady state creep rates significantly decrease with the adding of niobium element to form Mo-Nb solid solution alloys, which enhanced the diffusion resistance among atoms.

Since the successive layers have facing surfaces with mated topography, it is considered that the seperating of the layer from the reaction front should relate to the diffusion-induced stresses developing within the separating of the layer during solid state reactions.

Considered that little has been known in a detailed way of the mechanisms of diffusion-induced stresses, the relationship of atomic diffusion and stresses in solids will be elucidated and the concepts of creep-induced diffusion and diffusion-induced stresses are clarified in this paper.

Rational formula of border column punching is also suggested in consideration of the stress diffusion.

Critical edge pressure of soft clay foundation considering closure effect and stress dispersion of crust;

Theory of composite foundation considering stress dispersion and its application in engineering

Investigation of the influences of various geometric parameters on the stress distribution showed that the most important factors influencing the stress dispersion are the web thickness and the inertia moment of the rail,while the inertia moment of the top flange has only minor influence.