化学合成

The results indicate that the synthesized sphene has a good chemical durability in the aqueous solution whose pH value is 5-9, the temperature and pH of the solution have important influences to its chemical durability in 1-21 days.

结果表明，在pH为5~9的水溶液中，合成榍石具有良好的化学稳定性，温度和pH是影响1~21 d化学稳定性的重要因素；42 d Ca(上标 2+)的浸出率比Ti(上标 4+)的浸出率高2个数量级；在90℃、pH=7下，Ca(上标 2+)和Ti(上标 4+)的42d归一化浸出率分别为3.33×10^(-3)、1.33×10^(-5)gm^(-2)d^(-1)；在25℃、pH=7下，Ca(上标 2+)和Ti(上标 2+)的42d归一化浸出率分别为1.52×10^(-3)、3.05×10^(-5)m^(-2)d^(-1)；在25℃、pH=3下，Ca(上标 2+)的42d归一化浸出率达到7.71×10^(-2)gm^(-2)d^(-1)。

Emphasis on reaction mechanisms, synthesis, stereochemistry, as well as chemical and spectroscopic methods of analysis.

课程重点在反应机构、合成、立体化学、化学分析及仪器分析方法。

This paper reviews the recent progress on the Chinese syntheic research of marine natural products according to type classifications: marine cyclopeptides, cembranes, cembrenss, cembranolides, quinolone derivativcs, triacetonamine and subergorgic acid analogues.

由于海洋中的生物资源非常丰富，海洋中的生态环境与陆地显著不同，因此海洋天然产物具有独特的化学·结构和多种多样的生理活性。对这些物质的合成进行深入地研究，必将丰富天然产物化学的内容，促进有机化学基础

ESCA results show that silica is coated on surface of the polymeric microspheres. SEM analysis reveals that when water was used as a solvent, uniform silica coating on the surface of organic microsphere can be obtained, and when the reactive time is 10 minutes, an uniform coating layer can be prepared. But when tetrachloroethylene was used as a reactive solvent, an inhomogeneous silica coating is found on the organic microspheres.

由化学分析电子光谱仪纵深分析可以得到，矽的前驱物是藉由披覆方式附著在有机微球表面；SEM分析发现以水为溶剂所合成出之披覆有二氧化矽的有机微球表面呈现均匀披覆效果，并且当反应时间为10min时表面均匀披覆效果最好；而以四氯乙烯为溶剂的系统所合成之微球则呈现不均匀披覆。

The foreground of transforming biomass energy by boosting up lipid biosynthesis according to transgene and thermochemistry or biochemistry way is very considerable.

通过转基因方式增强油脂生物合成以及通过热化学和生物化学方法转化生物质能的前景是非常可观的。

The chapter 3 focuses on the design and synthesis of new thiazole derivatives.

论文第四章是噻唑衍生物的固相合成，设计并开发了用组合化学方法合成噻唑衍生物的新方法。

Author had started the research on design and synthesis of heterocycles several years ago, mainly focused on the design and synthesis of imidazole, thiazole, tetrazole derivatives and their glucosides, in which most of them may have some particular bioactivities.

本论文主要是围绕具有生理活性含氮杂环化合物的设计与合成而展开的，在论文工作中我们应用液相"一锅法"和固相组合化学方法进行了咪唑环、噻唑环、四氮唑环等具有生理活性的杂环化合物及其糖苷的合成。

The molecular weight of four kinds of UF resins by different process was determined by means of chemical analysis.

本文采用化学方法对四种工艺条件下合成的脲醛树脂进行相关分子含量测定，结合实验结果和合成工艺作了结构分析，并对比分析了衰减全反射红外光谱图。

This paper contains three parts: 1 Synthesis of novel titanium complexes; 2 Polymerization behaviors of alkoxyl substituted Cp Titanocenes as catalysts for styrene syndiotactic polymerization; 3 Polymerization behaviors of alkenyl substituted Cp Lanthanocenes as Methyl Methacrylate polymerization catalysts.

中文题名新型茂钛、噁唑啉钛络合物的合成、表征以及茂钛、茂稀土络合物催化性能的研究副题名外文题名 Synthesis，characterization of novel Cp，oxazoline titanium complexes and polymerization behaviors of titanocenes and lanthanocenes 论文作者张浩导师钱延龙黄吉玲学科专业应用化学研究领域\研究方向金属有机与均相催化学位级别博士学位授予单位华东理工大学学位授予日期2003 论文页码总数148页关键词金属有机化学稀土络合物噁唑啉类钛络合物茂钛络合物馆藏号BSLW /2003 /O627 /27 本论文包括三部分内容：1）有机金属钛络合物的合成；2）烷氧基取代茂钛络合物催化苯乙烯间规聚合的研究；3）烯基取代茂稀土络合物催化甲基丙烯酸甲酯聚合的研究。

Peptide synthesis. PMAP-23 peptide was synthesized by the solid phase method using Fmoc(9-fluorenyl-methoxycarbonyl)-chemistry.Rink Amide 4-methyl benz hydrylamine resin (0.55mmol/g) was used as the support to obtain a C-terminal amidate peptide.

多肽合成。萨夫- 23肽合成固相法芴-化学 try.rink 酰胺4 -甲基奔驰hydrylamine树脂( 0.55mmol /克)，被用来作为支持以获得一个c端酰胺肽。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失