The foaming effect,structure of foam,mutual solubility of polyether compounds and bubble mechanical properties of blowing agent HFC-365mfc,HFC-365/227 and water have been studied through the preparation of polyether compounds and rigid polyurethane foam and compared with HCFC-141b.

In this paper,the influences of different agents,there addition quantity and particle size on the foaming performance of the refining slag with high basicity were investigated.

The favorable foaming performance of refining slag is the most important factor that influences the achievement of hiding electric arc for LF.

Objective To seek the best installation method of ultraviolet lamp which can yield best sterilization effect.

The disinfection efficacy was examined by on-the-spot sampling using microporous filtering film suction-filtration method.

In order to know air disinfection efficacy in basic medical institutions of Beijing for the purpose of strengthening administration,on-the-spot survey and selective examination method were used to carry out examination and evaluation.

Carrier quantitative germicidal test and simulated field disinfection test method were used to study experimentally the germicidal efficacy and endoscope cleaning-disinfection efficacy of electrolyzed oxidizing water(EOW).