【摘 要】
：
Natural uranium has three isotopes, 238U, 235U and 234U, with natural abundances of 99.27 atom %, 0.72% and 0.0055%, respectively. Only 235U is fissile and the
【机 构】
：
School of GeoSciences University of Edinburgh Edinburgh EH9 3JJ UK,School of GeoSciences University
【出 处】
：
Chinese Journal of Geochemistry
论文部分内容阅读
Natural uranium has three isotopes, 238U, 235U and 234U, with natural abundances of 99.27 atom %, 0.72% and 0.0055%, respectively. Only 235U is fissile and the production of nuclear fuel and nuclear weapons involves enrichment of uranium in 235U. This pro
Natural uranium has three isotopes, 238U, 235U and 234U, with natural abundances of 99.27 atom%, 0.72% and 0.0055%, respectively. Only 235U is fissile and the production of nuclear fuel and nuclear weaponstrics enrichment of uranium in 235U. This pro
其他文献
In this research, chlorinated hydrocarbons (polychlorinated biphenyls and organochlorine pesticides) were measured by GC-ECD in sediments from the Hongfeng Rese
为满足地区企业用电户与居民电力需求的增长，需在维柳伊河上修建梯级第二级电站——维柳伊３号水电站。介绍维柳伊３号水电站的主体建筑物、枢纽施工现状和１９９９年第一台机组投入运行需
The behavior of REE during the sulphide weathering is still poorly understood, although REE geochemistry during weathering of igneous rocks has been well docume
The municipal solid waste (MSW) landfills are the significant sources of atmospheric contamination, due to biogas production by anaerobic decomposition of organ
高等数学是高职院校的一门公共基础课程,它所起的作用是不可或缺的。但我们的目标不是培养专业的数学人员,而是希望学生通过学习之后,能把它做为研究其它学科的一种工具。所
峰头水库位于云霄县境内漳江上游,坝址在马铺乡峰头村附近。控制流域面积333km~2,坝高64.4m,库容1.77亿m~3,现有发电装机11500kW,1986年底建成,是一座以灌溉为主,结合发电、
One experiment was conducted, through tensile tests of Albazzia and Eucalypt roots culled from the fields. The other experiment was conducted, by testing anti-d
Mesozoic to Cenozoic petrified woods are very rich and well preserved in the Khorat Plateau, Northeast Thailand, serving as remarkable material for investigatio
复发卵巢癌姑息治疗的目的是控制疾病相关症状、降低治疗的副反应,延长生存期,延迟病情进展的时间,维持或更好地提高生存质量。 复发卵巢癌首次铂类化疗的无治疗间期长短明
在最近刚刚揭晓的戛纳广告奖中,周俊仲为NOKIA6100做的李小龙篇和为福特ESCAPE汽车做的尼加拉瀑布篇杀进FINALIST,这已经是他第三次与该奖亲密接触了。虽然少了一些新鲜的刺