The geologic characteristics and potential damage factors of reservoir have important effects on the gas well production.

Analysis on Harmfulness of Human Body Parasitic Disease in Yunnan Population;

Focusing on the characteristics of processing and equipment in general paper-making factory,this article analyzed the dangerous and harmful factors of papermaking industry,and put forward corresponding safe measures and suggestions.

The chemical and physical hazard factors,and protection methods for the surveying reporters in the leaking sites were analyzed,based on the more than 20 years practice experience of the online leak sealing engineering at home.

The hazard factors to the operators in the leaking sites and the disastrous consequence with physics explosion,chemical explosion,poison,noise deafness,scald,frostbite and attack injury etc were analyzed based on already and possibly accident to occur for online leak sealing engineering operating.

The hazard factors analyzing of emergency response classification system, partition of departmental function and configuration of two-graded plan for dealing with urban drainage emergency response systems were studied in this paper.