Feasibility of using mixture of gas in mine with artificial gas;

This paper studies the influences of structure parameters of a manufactured gas pulse combustor on its various characteristics.

Replacing manufactured gas with natural gas for households is a welfare project launched and thought highly of by Datong Municipal Government.

The status of manufactured gas network in TaiYuan is introduced,and some problems of natural gas conversion are analyzed,and the solutions are putforward.

[ Method] The coal miners received questionnaire investigation and their blood pressure、height and weight were measured, levels of plasma Ang Ⅱ were determined by radioimmunoassay in coal miners with hypertension and non-hypertension.

Objective We aimed to investigate the characteristic of pneumoconiosis on coal miners and provide scientific evidences for its prevention.

Conclusion Coal miners working underground are at a greater risk to contract hypertension than those working on the ground,and the contraction of the disease is not only related with the length of the miners\' working underground,but also related with smoking,wine drinking,obesity and the history of hypertension in their families.

The Changes Of Normotensive Offspringss of Spontaneous Hypertensives in Coal Miners

This paper utilizes data which was compiled from an investigation concerning science literacy and related factors among coal miners in Shanxi,Hebei,Heilongjiang,Sichuan and Shandong provinces,based on the analysis and research of the basic situation concerning science literacy related factors.