化学合成

In this paper, we have focused on the control of the size and shape of nanoparticles by developing effective synthetic techniques of molybdenum disulfide nanoparticles and zinc borate nanoparticles.

本论文发展了化学方法制备纳米二硫化钼和纳米硼酸锌的技术，利用各种控制方法和新的合成路线合成不同形貌的纳米材料。

First we found some limitation lying in the chemical metathesis, especially in the controlling of the quality of the product and the velocity of the reaction. In the following research, we did some comparison experiment of synthesizing various nickel boride nanocrystal in the same principle, but by the two methods respectively.

另外，在试验过程中，我们逐渐发现了化学交换法的局限性，尤其在对反应进程和反应产物质量的控制方面的缺陷，并进一步通过分别用两种方法合成纳米硼化镍颗粒，合成原理相同，但反应产物相应发生较大变化。

Cardanol is principal component of Cashew Nut Shell Liquid used as raw material. According to its structure characteristic, a series of high-performance or functional polymers have been prepared by organic synthesis and polymeric synthesis.

本研究以天然产物腰果壳的榨取液为原料，根据该壳液主成分腰果酚的结构特征，采用有机合成和高分子合成等方法，制备一系列具有高性能或功能性的高分子化合物；并用物理和化学等方法，以及现代测试手段进行结构表征和性能测试。

The suitable synthesis conditions of those new products have been studied. The structures of them are affirmed by IR spectroscopy, 1~H NMR,(13)~C NMR and Elemental Analysis;the configurations of them are also analyzed by theoretical calculation of quantum chemistry. Influences of the length of hydrophobic group, the degree of substitution on the solubility, surface activity, emulsifying property, foam property, hygroscopicity and humidity-retaining ability, compatibleness of those new products have been studied in detail.

探讨了各反应产物的适宜合成条件，并利用红外吸收光谱、1~H、(13~C核磁共振、元素分析等仪器分析手段和量子化学从头算STO-3G对所得产物的结构进行了表征；同时较详细地研究了疏水基碳链长度、反应取代度对合成产物的溶解性、表面活性、乳化性、泡沫性、吸湿保湿性和配伍性等物化性质和应用性能的影响规律。

The Carbonyl Compound Mode Evaluation Device is a research chemical production line newly built by Lanzhou Institute of Chemistry Physics Chinese Academy of Sciences, whose main intention is to make qualitative and quantitative evaluation of the properties of cobalt salt catalyst through the process of producing high-carbon alcohol with carbonyl compound .

"羰基合成模试评价装置"是中科院兰州化学物理研究所新建的研究性化工生产线，主要是通过羰基合成制高碳醇的过程，对钴盐催化剂性能做出定性定量的评价。

Experimental results indicate that the optical purity of the chiral cyanohydrin obtained by enzymatic reaction is quite high, and it is an excellent starting material for the stereoselective synthesis of the chiral amino alcohol compounds.

实验结果表明，醇腈酶催化合成的手性氰醇光学纯度较高，是合成手性氨基醇化合物的优秀原料，并且在随后的化学转化过程中各步反应产物均很好地保留了光学纯度。

A better understanding of the role of PPAR in insulin action system will be critical in developing more efficacious and safe agent s that act on PPAR and benefit patients with type 2 diabetes. The main content is followed: Synthesis and analysis of 1,3-dicarbonyl compounds. Make use of easily available cheap reagent such as 2-naphthol, 6-hydroxyquinoline, 1,2-dibromoethane, 4- hydroxybenzaldehyde, dimethyl malonate, 2-{4- [(2-napthoxy)ethoxyl] benzyl} malonates and 2-{4 [(1,2,3,4-tetrahydro-6 -quinolinoxy)ethoxyl] benzyl } malonates were synthesized through 6-8 steps in virtue of Williamson, Knoevenagel reaction, Pd/C catalyzed hydrogenation with mild conditions and high yield. The total yield of 40-50%.

本论文的主要内容和研究结果如下： 1，3-二羰基类化合物的合成及分析，采用2-萘酚、6-羟基喹啉、1 ，2二溴乙烷、对羟基苯甲醛、丙二酸二甲酯等常见易得试剂，利用Williamson反应、Knoevenagel反应、钯碳加氢等条件温和且收率高的方法，分别合成了2-{4- [(2-萘氧)乙氧基]苄基}丙二酸衍生物和2-{4 [(1，2，3，4-四氢-6-喹啉氧基)乙氧基]苄基}丙二酸衍生物两个系列8个化合物，经6-8步反应，总收率为40-50%，具有一定绿色化学特性。

Objective: To explore the expression of fatty acid synthase and its significance in esophageal carcinoma.

目的：研究脂肪酸合成酶在食管癌中的表达及其临床意义。疗法：通过免疫组织化学的方法对45例食管癌标本，6例不典型增生的食管粘膜和12例正常食管粘膜中的脂肪酸合成酶的表达进行检测；并与临床病理指标进行比较。

This thesis is based on former studies made by our team. Combining with practical conditions, the thesis selects proper basis sets. Applicable and credible quantum chemical calculation methods were adopted to calculate structural optimization, net atomic charge, orbit energy, etc. for a series of compounds against parasite fasciola hepatica according to quantum chemistry theory.

本论文在课题组以前的研究工作基础上，选取应用性好、可靠性强的量子化学计算方法，并结合实际情况选择合适的基组，从量子化学理论角度出发，对于合成的抗肝片吸虫系列化合物进行了结构优化、原子净电荷、前线轨道分布等量化计算。

The chapter 1 introduces the background of imidazole, thiazole, tetrazole derivatives and their glycosides, and organic solid phase research.

论文第一章介绍了咪唑环、噻唑环、四氮唑环等杂环的合成，总结了糖苷的合成方法，对杂环的固相合成化学进行了简单介绍。

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