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针对水电站建设项目水土保持方案编制中遇到的重点不突出、可操作性差等问题,从实践和技术的角度,对水电建设项目水土保持编制中若干问题进行探讨. 相似文献
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An improved method has been developed for enriching and determining trace In,Pt,Sn,Co,Hg,Pb,Ni,Bi,Pd,Cu and Ag in high-purity gallium.Sample was treated by PDM(partial dissolution of matrix)withHCl(11mol/L)-HNO_3(0.5mol/L)to a small residue of which Ga was then removed by extraction with 1 mlisopropyl ether.The concentrated impurities were determined by AES procedure.The recoveries for the ele-ments at the range of 0.02~0.2 μg are 95~103%;the relative standard deviations for determined impuritiesovera rangeofn.10~(-7)~n·10~(-8)% are 4.3~12%;the detection limit of most elements can reach n·10~(-7)~n·10~(-8)% level with the exception of Hg and Pt.This method has been successfully used to analyze many sam-ples sent by factories and institutes. 相似文献
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我们始终将班组建设作为提高整体素质、增强整体实力的重要途径。通过强化班组长管理,完善班组制度,建设班组文化,创建“五型”班组等手段,不断提升班组执行力和基层员工的思想素质,强化了生产安全管理,促进了工作标准化规范化,有力地推进了基层党组织建设。 相似文献
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