Taking fractured ore section of orebody №105 with high value in Gaofeng mine for example,three representative kinds of goaf were selected and their stability were calculated by discrete element method in terms of differences in goaf scale,surrounding conditions and initial rock stress field.

A better transition layer material was confirmed,which overcame the problem of fragmentation and lamination of PDC.

The fragmentation influences the char combustion behavior in a fluidized bed combustor.

Based on the perturbative QCD predictions of gluonic distributions and branch cross section of the J/(?) decay via hadronic, electromagnetic,and radiative channels, the strict solutions of LUND area law of string fragmentation had-ronization are used to treat nonperturbative hadronic production processes, a possible description and Monte Carlo packet for the J/(?) hadronic decay are obtained.

An Analysis on Break of Separating Ring for Horizontal Concasting and Improved Measures;

The results show that the fracture process of weathering is a fractal one.

Failures of IC smart cards,caused by fracture of thin/ultra-thin Si chip,break of wire bonding or ESD etc.

The fracture of thin/ultra-thin silicon dies accounts for half of the failures of IC cards,and its failure modes and failure mechanism are not well understood then.