合成

The influence of each strategy on heat economy and safety operation of gas turbine simple cycle was discuss...

结果表明：对于焦炉煤气，方案1的热经济性最高，方案4的热经济性最低，各方案对燃气轮机的安全运行几乎没有影响；对于煤基合成气，方案5的热经济性最高，方案4的热经济性最低，方案1的安全性最差；综合考虑热经济性、安全性和可操作性，对于焦炉煤气，方案1是最佳方案，对于煤基合成气，方案2是最佳方案。

The invention relates to a Magadiite/ZSM-5 intergrowth material and a synthetic method thereof, which mainly solves the problems of singular pore-size distribution and nonadjustable pore diameters of the porous material synthesized by the prior art.

本发明涉及一种Magadiite/ZSM-5共生材料及其合成方法，主要在于解决现有技术合成的多孔材料孔径分布单一、孔直径不可调节的问题。

The regioselectivity of primary aminyl radical cyclization was first investigated in this dissertation. The total synthesis of 14-Aza camptothecin was then achieved on the basis of our investigation in the construction of pyrimidin-4-one skeleton via [4+2] strategy.

中文摘要本论文首先探讨了伯胺氮自由基环合反应的区域选择性，然后应用[4 + 2]策略对吡咯并嘧啶-4-酮的合成方法进行了研究，并在此基础上完成了14-氮杂喜树碱的合成工作。

With L-DOPA as the starting chiral phenylalanine derivatives, construction of the skeleton of Phthalascidin was studied. Firstly, starting from L-DOPA and 3,4-dimethoxyphenylalanine, an amide 〓 was obtained, and a modeling cyclization reaction was carried out but failed to give the anticipated product.

二、对由苯丙氨酸甲酯衍生物通过Bischler-Napieralski反应合成四氢异喹啉—3—甲酯进行了研究，通过研究首次发现，生成苄基噁唑的反应是正常的B-N反应的竞争性反应，并从机理上给予了解释，所得出的结论具有一定的规律性，在杂环的合成方面具有一定的应用价值。

The key steps involved Friedel-Crafts reaction of o-cresol and the Wittig reaction for construction the skeleton of amine moiety,at the same time, using the synthesis of E,(7S)-7-methoxytetradec-4-enoic acid in chapter 2,and Johnson-Clainsen rearrangement as a key step for construction the fatty acid part,the corresponding acid was prepared in 23%and 50%overall yield,respectively.

随后将手性不饱和脂肪酸和氨片段进行酰胺化反应构筑了malyngamide M的基本骨架，再将Z-烯氯转化为E-烯氯完成了目标分子的全合成，高立体选择性地构筑了末端烯氯结构，为制备其它含有类似烯氯结构的malyngamides探索出行之有效的合成路线。

Sodalite was synthesized from coal fly ash through hydrothermal reaction and was characterized.

利用粉煤灰通过水热合成反应合成了单一方钠石，并对其进行了表征。

The working voltages were experimentally measured on-line at different reaction times under conditions of different temperatures, different current densities, and different initial anolyte concentrations in the electrochemical synthesis process of sodium dichromate and chromic anhydride from sodium chromate and sodium dichromate, respectively.

在线实验测得不同温度、不同电流密度、阳极液不同初始浓度时，铬酸钠电催化合成重铬酸钠和重铬酸钠电催化合成铬酸酐过程中不同反应时间下的工作电压。

The experimental results show that the electrochemical synthesis process of sodium dichromate from sodium chromate presents zero order reaction kinetic characteristics, and the electrochemical synthesis process of chromic anhydride from sodium dichromate presents first order reaction kinetic characteristics.

铬酸钠电催化合成重铬酸钠反应表现为拟零级反应动力学特征，重铬酸钠电催化合成铬酸酐反应表现为拟一级反应动力学特征。

Seven derivatives of 1,3- dithiocyclohexane were prepared via the reaction o f 7 aldehydes with Bunte′s salt prepared from 1,3-dichloroprop ane and sodium thiosulfate.

国内外关于 1， 3 二硫环己烷类化合物的合成已有大量报道 [5~8]，但反应条件较苛刻，一般都在-18~78℃之间，而且一种方法只能合成一种物质。

The catalytic performance of MDA on a Mo/HZSM-5 catalyst derived from the HZSM-5 zeolite prepared from soluble glass is better than that derived from the HZSM-5 zeolite prepared from silicon gel.

由水玻璃合成的HZSM-5分子筛制得的Mo基催化剂，其甲烷无氧芳构化性能优于由硅溶胶合成的HZSM-5分子筛制得的Mo基催化剂。

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