This thesis narrates and comments on the present development of Chinese drying technology, the research of drying theory and the technical innovation; gives a complete introduction of the drying technology's present application in various professions; analyses and discusses the permanent development path and the development tendency of drying technology.

In the paper is described the reserves,production,price and present applications of Indium is described.

The photocatalytic mechanism of nano- TiO2 was investigated, a nd factors affecting its photocatalytic performance, such as crystal structure, cr ystal size, surface modification and compounding were analyzed with its present applications as photocatalyst in environment protection, bacteria killing and at tacking, photovoltaic conversion and so on being summarized.

Laboratory experiment development and field application of high efficiency reservoir blockage relieving oil displacement agent;

Single well microbial treatment technology and the effect of field application;

Synthesis and field application of highly efficient sewage corrosion inhibitors made from imidazoline;