Based on the research of thaw time and RF (radio frequency) and penetration depth of frozen Spanish mackerel, the experiments results validated RF thaw method if superior to microwave thaw and other usually used methods.

METHODS The formulation and preparation process of clozapine orally disintegrating tablets optimized by single factor experiment using sedimentation volume and disintegration time as the main evaluation parameter.

METHODS Taken the disintegration time as a target,to optimize the prescription craft of dispersible tablets by orthogonal experiment design,determined its in vitro dissolution rate and inspected the preliminary stability.

The main factors that influence tablet hardness and disintegration time are wetting agent ethanol, agglutinating agent polyvinylpyrrolidone(PVP) and tablet pressure.

The results show that the determination of ammonia nitrogen is accurate,however total nitrogen content is low due to shortage of digestion time.

Under a certain condition the influences of digestion time on the measurement results of CODcr are analyzed in order to determine optimal digestion time.

The optimum conditions were determined by testing digestion time and amount of catalyst.

Effect of overall pressure on particle size, pyrolysis time, chemical composition of Si/C/N powders synthesized through chemical vapor deposition was studied by means of IR,SEM and elemental analysis.

We investigate breakthrough curve of carbon dioxide on it and infection of pressure,desorption time.

In this paper using mathematical method,the process of the desorption and diffusion was described,inferred the conception of coalbed methane desorption time and presented the graphics to determine the desorption time,would be very useful to recognize and determine that important parameter in coalbed methane exploration and development.