[ 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.
[方法]对地面与井下作业的煤矿工人进行问卷调查和血压、身高、体重的测量,用放射免疫测定法测定研究对象的血浆AngⅡ水平。
Objective We aimed to investigate the characteristic of pneumoconiosis on coal miners and provide scientific evidences for its prevention.
目的 分析煤矿工人尘肺发病特征 ,为有效防治尘肺提供科学依据。
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.
本文采用2007年煤矿从业人员科学素质相关因素调查资料和数据对国有和私有煤矿工人利用大众传媒荻取新闻时事和科技信息的渠道进行了比较分析,调查表明,煤矿工人获取信息的渠道呈现文化程度差异、年龄别的特点。
Mine Project Investment Control Management System Base on Web;
基于WEB的煤矿工程项目投资控制管理系统
This paper,aims at the requirements of the fast graphic clipping in mine map,analyzes the relationship between trim lines and the graphic primitives to be clipped,puts forward an effective algorithm for the fast graphic clipping,and presents an application example.
针对煤矿工程图形对快速“剪裁”的需求,分析了各类拟剪裁图元与剪裁边的关系,提出了一种有效的快速“剪裁”算法,并给出了应用实