无机盐复合沉淀法及柱层析法提纯胡麻卵磷脂

研究建立了以新疆本地资源胡麻油脚制得的粉末磷脂为原料提纯卵磷脂的方法。筛选出了有效、合适的无机盐沉淀剂,在传统有机溶剂萃取的基础上,根据卵磷脂可以和无机盐形成复合物的性质,制得卵磷脂粗品。筛选出了柱层析吸附剂,通过柱层析最终得到精制卵磷脂。产品通过薄层层析进行了初步鉴别。     

行政诉讼撤诉制度探析

撤诉制度在一定程度上反映了一国的诉讼模式和诉讼价值取向。中国的行政诉讼撤诉制度从一个侧面反映了中国法治行政的现状。本文透过行政诉讼撤诉这一具体制度的窗口,分别从实然和应然之角度考察分析了我国行政诉讼撤诉制度,进而反思并追问中国行政法治的现状和未来。     

Emerging trends in US retailing

This article examines the trends shaping the retail environment as we enter the next century. A modified delphi approach was used to access managerial perceptions of the changing retail landscape. Changes in consumer markets, price and branding strategy, store formats, retail institutions and applications of technology were derived from the analysis. From this, a series of managerial considerations are proposed to focus retail managers on developing new strategies to position themselves effectively in the new global marketplace.     

QUANTILES OF SUMS AND EXPECTED VALUES OF ORDERED SUMS

Watson & Gordon (1986) investigated the relationship between the quantiles of a sum of independent continuous random variables and the sum of the individual quantiles. In this note some further results are obtained. Also corresponding relationships are developed for the expected values of the order statistics of a sum, and for the sum of the expected values of the individual order statistics.     

液固顶空气相色谱法测定西洛他唑中溶剂残留

建立液固顶空气相色谱法分析西洛他唑中溶剂残留。采用DB-FFAP大口径毛细管柱,以正丙醇为内标进行定量。乙醇、DMF的线性范围分别为 1.5￣30.2μg·mL-1　(r=0.9993),1.8￣36.4μ g·mL-1(r=　0.9968);回收率分别为104.8%,105.2%。最低检测限分别为0.01μ g·g-1,0.16μg·g-1。     

城乡统筹发展与构建社会主义和谐社会

统筹城乡经济社会发展是构建社会主义和谐社会的必然要求、重要标志和关键所在。只有妥善处理城乡关系,促进城乡协调发展,才能完成全面建设小康社会的伟大任务,也才能建立全体人民各尽其能、各得其所而又和谐相处的局面。     

双曝光散斑干涉测温

本文以散斑干涉原理为基础,探讨了双曝光干涉测温的光路设计问题,并导出二维温度场的计算公式。