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The epoxidation of of various olefins was carried out using LDH-F with Mg/Al=5 as the catalyst and H2O2 and benzonitrile as the oxidants. This catalytic system has excellent catalytic activity. The conversion and selectivity are both above 95% when using styrene, indene, allyl alcohol, and allyl chloride as the substrates.

以Mg/Al=5的LDH-F为催化剂,H2O2和苯甲腈为氧化剂对不同官能团化烯烃进行环氧化反应,结果表明,此催化体系具有良好的催化性能,在苯乙烯、茚、丙烯醇和烯丙基氯环氧化反应中转化率和选择性均在95%以上。

The results of AD reactions are as follows:(1) When the AD reaction of eight olefins was performed at 0.5mo1% OsO〓 and 2mol% ligand 8 in PEG/NMO system, the diols were obtained in 78~90% yields and 78~96% ees (except for trans-5-decene and ally naphthyl ether).

催化结果如下:(1)在PEG/NMO体系中,将配体8用于八种烯烃的AD反应,配体、OsO〓和底物的摩尔比为0.02/0.005/1时,化学产率为78~90%,除反式-5-癸烯和萘基烯丙基醚较低外,其它六种烯烃的相应二醇产物的ee值为78~96%。

Allyl starch was prepared by etherification pretreatment of introducing allyl groups onto starch, and then AS-g-PMA was synthesized through graft copolymerization between allyl starch and methyl acrylate. The adhesion to fibers, sizing film and sizing performance of the blended size composed of AS-g-PMA and PVA-1799 were investigated. And the possibility by using AS-g-PMA to substitute PVA component was studied by contrast experiments.

摘〓要:通过烯丙基化变性对淀粉进行预处理制取烯丙基淀粉,再与丙烯酸甲酯进行接枝共聚合成接枝淀粉,文章探索了这种接枝淀粉与PVA1799混合浆的黏附、浆膜及浆纱性能,与目标配方进行比较,揭示出AS-g-PMA取代PVA的可能性。

A novel chiral diallylic diamine has been synthesized through double addition of allyl zinc bromide to chiral imines in this contribution.

通过烯丙基溴化锌对手性亚胺的两次不对称加成,合成了光活性的双烯丙基化的新型手性二胺。

RESULTS: Expression of iNOS proteins was seen on day 1 following the control stent implanting, developed on day 3, peaked on day 10 and lasted till day 28. iNOS expressions at all time points in diallyl trisulfide coated stent group were higher than those in control stent group. Compared with normal blood vessel tissue, the NO production after stenting decreased on day 1, increased on day 3, maximized on day 10, went down to its pre????stenting level on day 28. At all time points, NO levels in allitridi????stented sites were higher than those in control????

结果: 对照支架组术后1 d血管壁中有少量iNOS蛋白表达,3 d表达增加,10 d达高峰,28 d时仍有表达,二烯丙基三硫化物涂层支架组iNOS蛋白在各时间点的表达量均高于对照支架组;对照支架组术后1 d时NO生成量低于正常组织,3 d时NO水平升高,10 d时最高,28 d时降至基线水平,二烯丙基三硫化物涂层支架组各时间点的NO水平明显高于对照支架组。

Results: expression of inos proteins was seen on day 1 following the control stent implanting, developed on day 3, peaked on day 10 and lasted till day 28. inos expressions at all time points in diallyl trisulfide coated stent group were higher than those in control stent group. compared with normal blood vessel tissue, the no production after stenting decreased on day 1, increased on day 3, maximized on day 10, went down to its pre stenting level on day 28. at all time points, no levels in allitridi stented sites were higher than those in control stented sites.

结果: 对照支架组术后1 d血管壁中有少量inos蛋白表达,3 d表达增加,10 d达高峰,28 d时仍有表达,二烯丙基三硫化物涂层支架组inos蛋白在各时间点的表达量均高于对照支架组;对照支架组术后1 d时no生成量低于正常组织,3 d时no水平升高,10 d时最高,28 d时降至基线水平,二烯丙基三硫化物涂层支架组各时间点的no水平明显高于对照支架组。

Stented sites. CONCLUSION: Diallyl trisulfide coated stent could significantly enhance the iNOS expression and NO production, which may play an important role in inhibiting neoin????timal hyperplasia.

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。

In addition, 65% ee was obtained for 1, 3-dimethylprop-2-enyl acetate. Interestingly, the reactivities of these ligands are all very high.

对于1, 3-二苯基烯丙基醋酸酯的烷基化和胺化反应, ee 值最高分别为93%和98%,此外,在对1, 3-二甲基烯丙基醋酸酯的烷基化反应中 ee 值最高也可达65%。

In this paper,the physical propertites and reactivity of allyl xy lob resin are introduced, and a new matrix resin— allyl xylok /BMI resin system is showed.The properties of this resin system and its fiber reinforced compression moloding materials.

文中论述了烯丙基新酚的物性和反应性,研究了烯丙基新酚/BMI树脂体系以及用它制成的玻璃纤维压塑料的性能,如反应性、力学性能、韧性、耐热性、耐湿热性和绝缘性能等。

A new train of thought of copolymerising modification of the boron phenolic resin was applied and a new resin contained allyl was synthesized through allyl phenol, phenol, boric acid and polyformaldehyde.

运用硼酚醛树脂共聚改性的新思路,利用烯丙基苯酚、苯酚、硼酸、多聚甲醛等合成出结构中含有烯丙基活性基团的可与其它含不饱和双键树脂发生共聚反应的新型硼酚醛树脂,表征了它们的物理性能和结构。

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索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。

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这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。