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世界各国之间的竞争,归根结底是科技之争、教育之争和人才之争。江泽民同志多次指出:“创新是一个民族进步的灵魂,是一个国家兴旺发达的不竭动力”。开展创新教育、提高学生科技素质的重任,已经历史地落在教育工作者的肩上。 相似文献
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Forensic examinations of ink have been performed since the beginning of the 20th century. Since the 1960s, the International Ink Library, maintained by the United States Secret Service, has supported those analyses. Until 2009, the search and identification of inks were essentially performed manually. This paper describes the results of a project designed to improve ink samples' analytical and search processes. The project focused on the development of improved standardization procedures to ensure the best possible reproducibility between analyses run on different HPTLC plates. The successful implementation of this new calibration method enabled the development of mathematical algorithms and of a software package to complement the existing ink library. 相似文献
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A new methodology for oligosaccharide combinatorial library synthesis using a special hydroxy protecting group, the uni-chemo hydroxy protection (UCHP) group, was developed. The UCHP group was composed of oligomeric amino acid derivatives. The amino terminals of UCHP groups were protected by either Boc or Fmoc groups. By using these two types of UCHP, five kinds of trigalactoses [Galβ1-3Galβ1-3Gal, Galβ1-3(Galβ1-4)Gal, Galβ1-4Galβ1-3Gal, Galβ1-3Galβ1-4Gal, and Galβ1-4Galβ1-4Gal] were successfully synthesized on a solid support as a model of oligosaccharide combinatorial library. Each step of all reactions was also successfully monitored using a combination of two colorimetric tests, chloranil and methyl red-DIC. 相似文献
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WANG Ying WANG Kun BAO Yong-li WU Yin MENG Xiang-ying LI Yu-xin 《高等学校化学研究》2007,23(3):310-313
The root of Panax ginseng plant undergoes a specific developmental process to become a biosynthesis and accumulation tissue for ginsenosides. To identify and analyze genes involved in the biosynthesis of ginsenoside, we constructed and characterized a full-length cDNA library for 6-year-old North American ginseng. The titer of primary cDNA library is 1.2 × 10^6 pfu/mL, the titer of amplified library is 2. 6 × 10^10 pfu/mL and the rate of recombinant is above 86%. The insert size ranges from 0. 3 to 2.0 kb. Sequencing results show that 18 of 58 genes are high homologous to the genes (GBRS, GBR3 and GBR1 ) known in GenBank, which are involved in biosynthesis of ginsenoside in North American ginseng plant; 16 of 58 genes are novel genes. The full-length cDNA library of North American ginseng root tissues is essential for the cloning of genes known and it is also an initial key for the screening and cloning of new genes. 相似文献
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合理设计一些容量小的、针对特定靶标的化合物库(称为集中库,focused library),是当前组合库设计中的热点。当靶标的三维结构可以通过X射线衍射或NMR等手段确定后,人们就能采用几种不同的策略来进行组合库的设计。本文讨论了在靶标结合位点的约束下,进行组合库设计的主要方法及程序,同时强调了它们的优点与不足。通过这些方法的成功应用实例,显示了它们在新药创制中的广泛应用前景。 相似文献
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结合JJF 1069–2012《法定计量检定机构考核规范》中有关顾客的条款,从现代管理方法和客户价值理论方面阐述了计量检定机构客户价值的表现形式,探讨了提升客户价值的途径。 相似文献
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在肽库中进行小肽筛选的初步研究 总被引:1,自引:0,他引:1
以合成六肽DGGSAA为模型对在噬菌体肽库中进行小肽筛选做了初步研究。结果表明,含有可形成氢键和离子键残基的小肽能够在噬菌体肽库中进行筛选。并用明显提高了筛选的专一性。 相似文献
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医院药师用药咨询服务情况分析 总被引:2,自引:0,他引:2
谢春英 《广东微量元素科学》2006,13(6):65-67
为充分发挥临床药师的作用,进一步促进临床合理用药,对医院医师用药咨询服务情况进行了统计分析。结果表明,药物咨询服务极大地推动了医院临床药学工作的发展,医院药学工作是一块大有作为的天地。 相似文献