烯

OH radicals produced by ultrasound in aqueous solution attack phenolic cycle at adjacent or para position of the hydroxyl on phenol so that phenol is changed into small organic molecules such as muconic acid, maleic acid and ethane diacid. These small organic molecules will be oxidized to form carbon dioxide and water by.

苯酚超声降解的作用机理是，超声空化在水溶液中产生的·OH自由基进攻苯酚苯环上羟基的邻位或对位而使苯环断裂生成己二烯酸、顺式丁烯二酸和乙二酸小分子有机物而使苯酚得以降解，这些小分子有机物在·OH自由基的进一步作用下最终被氧化成CO〓和H〓O。

Two estolide are that the ester melts an agent take amylum as raw material , with smooth butylene , the ester carrying out the solid room's spends reaction under the situation of there being no menstruum,ester composing smooth amylum butylene diacid Shan, and by having optimized reaction condition , having improved reaction efficiency.

以淀粉为原料，以顺丁烯二酸酐为酯化剂，在无溶剂的情况下，进行固体间的酯化反应，合成淀粉顺丁烯二酸单酯，并通过优化反应条件，提高了反应效率。

CONCLUSION摘要: Diallyl trisulfide coated stent could significantly enhance the iNOS expression and NO production, which may play an important role in inhibiting neointimal hyperplasia.

结论摘要：二烯丙基三硫化物涂层支架可显著增加iNOS表达，并提升NO产量，提示二烯丙基三硫化物涂层支架可能是抑制内膜增生的一个重要机制。

Objective To study the effects of diallyl trisulfide on proliferation, apoptosis and cell cycle in acute myeloid leukemia cells HL-60 and the probable mechanism involved, aiming at offering credible academic and experimental bases for clinical use.

目的：研究二烯丙基三硫对急性髓细胞系白血病细胞株HL-60细胞增殖、凋亡及细胞周期的影响并探讨其作用机制，为二烯丙基三硫用于临床防治癌症提供可靠的理论基础和实验依据。

Part 1 Effects of DATS on proliferation of human bladder carcinoma T24 cells Objective To investigate the effects of diallyl trisulfideon growth inhibition, cell cycle and corresponding molecular mechanism of T24 cells.

中文摘要：第一部分二烯丙基三硫化物对人膀胱癌T24细胞增殖的影响目的研究大蒜提取物二烯丙基三硫化物于体外对人膀胱癌细胞系T24细胞增殖和细胞周期的影响及其可能机制。

Diallyl trisulfide coated stent could significantly enhance the iNOS expression and NO production, which may play an important role in inhibiting neointimal hyperplasia.

二烯丙基三硫化物涂层支架可显著增加iNOS表达，并提升NO产量，提示二烯丙基三硫化物涂层支架可能是抑制内膜增生的一个重要机制。

Diallyl trisulfide coated stent could significantly enhance the iNOS expression and NO production, may play an important role in inhibiting neointimal hyperplasia.

二烯丙基三硫化物涂层支架可显著增加iNOS表达，并提升NO产量，提示二烯丙基三硫化物涂层支架可能是抑制内膜增生的一个重要机制。

The third part of this thesis is reactive simulating calculation In this section, some well-known auxiliaries are selected to compute in density functional theory B3LYP on Gaussian 03, from which the relationship between reaction active energies of transition states and enantiomeric excess of chiral products homoallylic alcohols isobtained based on relative reactive ratio theory. Using this relationship, calculations on the reaction of more than eight auxiliaries with four other aldehydes are carried out in AMI and MNDO, proving that N,N\'-dibenzyl tartamide has higher enantioselectivity than others in this reaction.

第三部分为计算化学部分，运用密度泛函理论B3LYP方法在Gaussian03软件上对已经报道的几种手性配体参与的醛不对称烯丙基化反应过程进行模拟计算，基于相对反应速率理论找出两种构型过渡态间活化能的差异与产物光学收率之间的关系；并以此为基础，用AM1和MNDO方法对上述合成的几种配体控制的反应过程进行量化计算，从而在理论上证实了N-苄基酒石酸二酰胺配体在醛的不对称烯丙基化反应中具有较高的立体选择性。

In a similar way, using N,N\'-dibenzyl tartamide as auxiliary,-(2-methyl)allyl-2-chloro-phenyl-methyl azide, a vital intermediate of Repaglinide, can be prepared via asymmetric allylation of o-chlorobenzaldehyde in

产物经氧化和碘加成内酯化反应得到阿伐他汀中间体(3R，5S)-3-羟基-5-碘甲基戊内酯(10)；将N-苄基酒石酸二酰胺用于邻氯苯甲醛的不对称烯丙基化反应以较高光学收率得-甲基烯丙基-2-氯苯基-甲基醇

Reaction of 5'-O-p-methoxytrityl-thymidine with 1, 1'-carbonyl-diimidazole gave the 3'-O-carbonylimidazolide, which was condensed in high yield with 3'-O-protected thymidine to give a dithymidine carbonate. In the same way, we obtained the protected trithymidine dicarbonate. After deprotection, we obtained quantatively the trithymidine dicarbonate.By the same stratagy, we completed the synthesis of dithymidine sulfite.It was shown that allyl can be used as a good protection group for hydroxyl of ribose in the synthesis of oligonucleotides consisting in some unstable nucleotide analogues.

我们在第一部分工作的基础上，以烯丙基作为3'-OH的保护基合成了保护的三胸苷碳酸酯以及二胸苷亚硫酸酯，用我们所得的脱保护条件进行了脱保护研究，得到了三胸苷碳酸酯以及二胸苷亚硫酸酯，并研究了它们合成中的一些化学问题，结果表明：烯丙基能很好地运用于这两类寡核苷酸类似物的合成中，其脱保护条件为中性，不会影响碳酸酯键及亚硫酸酯键。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐