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The influences of mole ratio of ethanediol and naphthenic acid,a mount of catalyst,reation time,reation temperature etc.on est erification were discussed and the suitable processing conditions were found.

介绍了用氧化亚锡非酸性催化剂催化合成环烷酸季戊四醇脂的方法，通过讨论醇酸摩尔比、催化剂用量、反应时间、反应温度等因素对该脂化反应的影响，从而确定了适宜的工艺条件。

The influences of mole ratio of ethanediol and naphthenic acid,a mount of catalyst,reation time,reation temperature etc.on est erification were discussed and the suitable processing conditions were found.

文摘：介绍了用氧化亚锡非酸性催化剂催化合成环烷酸季戊四醇脂的方法，通过讨论醇酸摩尔比、催化剂用量、反应时间、反应温度等因素对该脂化反应的影响，从而确定了适宜的工艺条件。

Secondly, we show a security flaw in a previous certificateless ring signcryption scheme (Wang et al.'s scheme). It is not existentially unforgeable for Type I adversary.

其次，本论文指出了Wang等的无证书环签密方案的一个安全缺陷，对于第一类攻击者，此方案并不是存在不可伪造的。

Totally 17 new type of fulvene ligands have been synthesized by the reaction of substituted-benzoyl chloride with Cp and substituted Cp anions. All the new compounds are fully characterized by infrared spectroscopy,!

我们利用含芳香取代基的环戊二烯丛负离子与含-CN、-I、-CO_2CH_3等配位有机基团的芳酰氯反应成功地合成了17个既含芳香基团又含杂原子配位基团的刚性共轭富烯类配体。

We use this technology to measure some rock and oil sample taken from Liaohe or Tarim basin. We identified many series of biomarker with dividing-era significance. These series are C26 steranes, C30 methylsteranes; and methly hopanoid alkanes, hexacyclic hopanoid alkanes, which two series were measured first by our laboratory in China.

本论文建立地球化学样品GOMS／MS分析方法；并对辽河盆地和塔里木盆地岩石及原油样品进行GC／MS／MS分析，鉴定出多个系列具有划时代意义的生标组分，这些组分是用GC／MS技术无法检测的极微量的生标组分：C26降胆甾烷系列、C30甲基甾烷系列等：还有高碳数甲基藿烷系列和六环藿烷系列见图1，图2，在国内被我们实验室首次检出。

In this paper, the structures and the synthesis methods of glycosyl isothiocyanates are summarized, including the application as intermediates in the preparation of glycosylthioureas, glycosylheterocycles, glycosylguanidins and glycosylconjugates and so on.

本文对糖基异硫氰酸酯的结构、制备方法，以及作为中间体在糖基硫脲、糖基杂环、胍基糖苷、糖基缀合物等重要化合物的合成中的应用作了较详尽阐述。

The complex style of zoning texture in garnet is mainly originated by Fe-Mg exchange reaction on it s interface with Bt or other mafic minerals and intercrystal diffusion at the same time.

石榴石中复杂的环带结构样式主要通过它与黑云母等相邻矿物界面上发生的Fe-Mg交换反应和向晶内的扩散作用来实现。

In recognition of its important value in ion-selective electrode study, this thesis aims to develop new types of carriers. Metallorganic compounds, Metal-Schiff base complexes, heterocyclic nitrogen compounds, derivatives of calixarene,Sudan Ⅰ and dialkyldithio phosphate have been tested as carriers for all kinds of ions.

鉴于新型载体的开发在离子电极研究中所具有的重要价值，本文主要开展了这方面的一些研究工作，重点考察了金属有机化合物、金属希夫碱配合物、含氮杂环化合物、杯芳烃、苏丹Ⅰ以及双硫代磷酸脂衍生物等各类物质用作离子载体的可能性。

We observed that cyclophosphamide-immunosuppressed adult mice were Susceptible to acute infection leading to death.4-8 week old C57 mice or outbred Kunming strain mice inoculated in-tracerebrally with HFRS virus A-16 strain and immunosuppressed with four 50mg/kg CY doses at days -1,+1,+ 2,+ 4 (day O:virai infection), developed a lethal disease94% m...

在第-l、+1，+2、+4天注射环磷酰胺50mg/kg体重(第0天感染病毒)，可使小鼠由隐性感染变为急性致死性感染，病死率为94％。在病死动物的脑，肺、肝、脾和肾等器官中，检查翻HFRS病毒抗原。这些器官显示微血管系统和实质组织的病变。这种成龄鼠模型可用于本病的研究。

By using red blood cell broken-up solution,proteinase K and RNase,total DNA with high quality was extracted from the egg membranes in the incubated eggshells of two pheasant species,Reeves's Pheasant Syrmaticus reevesii and Ring-necked Pheasant Phasianus colchicus from Dongzhai Nature Reserve in Henan Province.

本实验以河南董寨自然保护区白冠长尾雉和环颈雉已孵化的卵壳为材料，利用红细胞破碎液、蛋白酶K及RNA酶等试剂，对卵壳膜内的总DNA进行了提取，建立了一种提取高质量DNA的新方法。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。