Investigated concomitant radioactivity of some lignite in the subregion of aggregative coal in west Yunnan Province,paying special attention to the concomitant radioactivity level about paragenesis between germanium and coal in the Lincang basin and another coal mine in Luxi.
通过对云南省滇西聚煤亚区部分褐煤,尤其是临沧盆地的锗煤共生矿和潞西等呷、芒究煤矿的煤资源中伴生放射性水平采样调查,利用其伴生放射性水平调查值与云南省辐射环境监督站提供的天然放射性水平值进行对比分析,结果表明:煤层中的伴生放射性水平与其形成煤区的岩性、煤质以及有机质有一定的关系,煤化程度低的褐煤尤其以劣质煤和富含有机质及炭化植物碎屑的褐煤伴生放射性水平较高。
The radioactivity level of RE elements and their alloys are discussed.
本文阐述稀土元素对钢铁性能多方面的改善作用，介绍我国稀土及其合金生产和应用的快速发展，讨论稀土及其合金的放射性水平，并对稀土放射性进行安全性分析。
This paper has discussed the airborne monitoring of radioactive contamination formed during exploitation and utilization of iron ore and coal ore, analyzed the Gamma Radiant Eminence Map of China, and determined several relatively high radioactivity level regions, thus showing the effects of airborne radioactivity survey.
通过对铁、煤开发利用中形成的放射性热点的成功航空检测,以及对中国辐射照射量率图的分析,确定了几个放射性水平偏高区域,从而阐明了航空放射性测量在环境检测中的作用。
The Radioactivity Levels in the Main Lakes of Shandong Basin in East Line of South to North Water Diversion;
南水北调东线山东段通水前主要湖区水放射性水平
[Results] The outdoor natural radiation level and the radioactivity level in samples of the environmental media were on the normal background lev.
[目的]评价秦山核电站运行15年间上海市金山地区环境放射性水平和居民所受剂量。
Individual dose to public resided in different sub-region of Yangtze valley and collective dose for the whole of Yangtze valley are estimated according to various irradiation pathways on the basis of the results of investigating the radioactive level on Yangtze River system.
根据长江水系放射性水平调查结果,按照不同照射途径估算了不同子区居民个体因使用长江水而导致的个人剂量,并估算了整个长江流域居民的集体剂量。
The radionuclide contents of typical granite stones have been measured, and their radioactive levels are evaluated according to the National Standard 《 Limit of radionuclides in building materials 》(GB 6566-2001).
从花岗石的颜色来看,红色石材放射性水平较高,黑色石材的放射性水平较低,它们都属A类石材。