It Probed into the effect of concentration explosive limits caused by the nature of explosive gases, the damping effect of polybasic Gas caused by CO, as well as the conjunct oxidative and inductive effect .

Based on numerical results of impacted roof movement at four stages which have been verified in-situ, the damping effects of roof movement at the impacted stage with three-dimensional distinct element code and chaotic dynamics theory are studied.

This work has systematically studied the damping effect of some other gases on the branch chain explosion of polybasic explosive mixture gas of H 2, CO and CH 4.

Aimed at the chucking phenomena happened when the common water hydraulic piston friction pairs work,the double damping effect piston friction pairs based on the hydraulic supporting principle were presented and the anti-chucking and flow rate characteristics were analyzed.

By the analysis of the dynamic processes of the movement of dislocations through a crystal lattice, a unified theory of collection dislocation motion including both thermal activation and viscous drag effects is proposed.

According to the analytical solutions of classical Bloch equations and the numeric solutions of extended Bloch equations with radiation damping (RD) effects, the effects of longitudinal relaxation on nuclear magnetic resonance (NMR) lineshape are theoretically studied when radio frequency (RF) field irradiation or RD effects must be considered.