The pinning phenomenon was investigated respectively in three kinds of two-dimensional rectangular moving beds, their cross-flow sections of the gas flow have the same height of 430 mm and their widths are 400 mm, 200 mm and 105 mm separately.

The effects of two internals,a flow-corrective element and a porous dividing wall,on pinning were investigated in a rectangular moving bed with cross flow of gas.

Objective To investigate the reason that neural stem cell clusters cannot keep suspending in the culture medium,and develop a novel anti-attachment culture system for long-term neural stem cell cultivation.

The attachment behavior of the rabbit embryos treated by different methods on the surface of the feeder layer was observed.

A discussion on the countermeasures against foreign subsidy-countervailing policies;

Looks at the formation mechanism of private forest subsidy system from the Industrial Revolution;

The Evolutionary Game for Chinese Enterprises Against Foreign Subsidy and Anti-subsidy;

Thereinto, patch bonded repair and flush repair are the two most important methods.

The item of national agricultural machinery purchase allowance is a good policy for "agriculture, country and farmer".

Introduced the actualizing of agricultural machinery allowance in Shandong Dingtao, conclude that bring social benefit, economy benefit and zoology benefit.

The allowance of medium-sized and small enterprises in public finance is the rectification made by the government on the external positive effect of medium-sized and small enterprises,which abides by the international practices and benefits the development of medium-sized and small enterprises.