To obtain multiple monoenergetic neutron sources and realize the on-site calibration of radiation monitoring equipment for nuclear-involved places,the structura
目前企业的经营环境正在发生巨大变化,而这种变化又与信息技术的支持扣影响密切相关.本文在介绍"虚拟企业"概念的同时,分析了信息技术对几种虚拟型企业的作用和影响.
本文以素质教育理念为依据提出了职业教育要面向未来，弘扬人的主体精神，促进人的全面发展，培养人的创新精神与实践能力。为了实现教育目标必须进行相应的课程改革，本文就目前职教
通过对古槐树的生长环境和生长状况的调查，并对植株叶片营养元素含量和生长地周边的土壤中营养元素含量进行定量分析，结果表明：土壤中的营养极度缺乏，根系得到的营养物质极为有限
Estrogens as a kind of steroidal sex hormone are widely used in humans, especially quinestrol(QS),dienestrol(DS) and norethindrone(NET, 19-nor-17-alphaethinltes
概要 1982年初由于1981年缩短作业时间和自动减产,期望能看到市场情况有所改善,但以高水平的棉纱不断进口,纺纱又一次亏本,棉制品供求失调,库存量增加等,演变到了如从前那样
With taking electromagnetic field into account for the transport model of Boltzmann-Uehling-Uhlenbeck,electromagnetic effects are studied for 208Pb t208 Pb coll
为了桉树的可持续经营,对刚果12桉、尾叶桉、窿缘桉三种桉树Zn元素的积累、循环进行比较研究。采用野外样地取样和室内分析方法进行研究,研究结果表明：刚果12桉、尾叶桉、窿缘
Tritium release is one of the most concerning topics in nuclear power plants. Here, the tritium production in a 2 MW liquid-fueled molten salt experimental reac
A novel X-ray tube spectrum reconstruction method has been proposed based on transmission measurements. Aluminum bars of varying lengths attenuate the X-rays to