烯化

The protic- or Lewis acid catalyzed ring-closure of divinyl ketones (and their acid-labile precursors) pentadienylic cations is known as the via Nazarov cyclization.

质子酸或路易斯酸通过戊二烯基阳离子催化二乙烯酮的环闭合（以及它们的酸不稳定前体）这个反应被称为Nazarov环化。

The formation of charge transfer complex was studied in the first part. The second part includes the synthesis and characterization of the acrylated unsaturated polyester and the kinetic studies on the Ar-UPE/ triethylene divinyl ether (DVE-3) photocuring system, the rheology and properties of film after photocuring. The third part includes the synthesis and characterization of the urethane modified unsaturated polyester and the kinetic studies on the PU-UPE/DVE-3 photocuring system, the rheology and properties of film after photocuring. The fourth part includes the synthesis and characterization of the vinyl ether end capped polyurethane and the kinetic studies on the VE-PU/DVE3 photocuring system, the rheology and properties of film after photocuring.

整个研究工作分为四个部分：一是电荷转移复合物的研究；二是丙烯酰氧基化不饱和聚酯的合成，表征，Ar-UPE/二缩乙二醇二乙烯基醚（DVE-3）体系光固化动力学研究以及Ar-UPE/DVE-3体系流变性能和光固化后涂膜综合性能的研究；三是氨酯改性的不饱和聚酯的合成，表征，PU-UPE/DVE-3体系光固化动力学研究以及该体系光固化后涂膜综合性能的研究；四是乙烯基醚封端的聚氨酯的合成，表征，VE-PU/马来酸二甲酯体系光固化动力学研究以及VE-PU/DMA体系流变性能和光固化后涂膜综合性能的研究。

The catalytic performances of the catalysts were studied by alkylation reaction of benzene and dodecylene in a micro-reactor.

采用负载磷钨酸的SBA-15分子筛作为催化剂，以苯和十二碳烯为原料，经烷基化反应合成十二烷基苯。

The all cis-structure of the cyclizative product was found. The construction of the enolic hydroxyl structure became easier and excellent.

合成中发现环化产物为全顺式结构，烯醇式结构的建立更为简洁、高效，异丙基在较复杂的结构下实现了一步引入。

The effect of different factors was investigated and the main process conditions were obtained: addition temperature120~140℃,esterify temperature:160~175℃,n:n=3~4:1mol:mol）,n(DCPD:n =0.6~0.8:1mol:mol）,the amount of catalyst is

双环戊二烯的含量低于80%，研究了各种影响因素，得出主要工艺条件：加成温度为120~140℃，酯化温度为160~175℃，n：n=3~4：1，n：n=0.6~0.8：1，催化剂用量为0.1~0.2%，树脂收率达

The leftover from bamboo processing was comminuted into bamboo fine powder, which was surface-treaded with a coupling agent of ethenyl tri (β-methoxyethoxy) silane; and then in the presence of initiator dicumyl peroxide, the powder was compounded with styrene-isoprene block copolymer/bromobutyl rubber blend to prepare a crosslinked vibration-absorbing rubber composite material.

将竹加工的边角料粉碎并用乙烯基三硅烷偶联剂处理，再与苯乙烯－异戊二烯嵌段共聚物和溴化丁基橡胶的共混物进行复合，在过氧化二异丙苯引发剂的作用下制得交联型橡胶吸振复合材料。

Neuron specific enolase,neurofilament,glial fibrillary acidic protein were detected by immunohistochemistry.

免疫组化鉴定神经元烯醇化酶、神经丝蛋白、胶质纤维酸性蛋白的表达。

In these chloroplasts carbon dioxide combines with phosphoenolpyruvate to form oxaloacetic acid, which is transported to the bundle sheath cells, where the carbon dioxide is released, then fixed by the enzyme ribulose bisphosphate carboxylase to form glycerate 3-phosphate, the first step in the Calvin cycle.

在叶肉细胞的叶绿体中二氧化碳与磷酸烯醇丙酮酸结合形成草酰乙酸，后被运到邻近的维管束鞘细胞，在那里二氧化碳被释放，后被核酮糖二磷酸羧化酶固定形成3－磷酸甘油酸，这是卡尔文的循环第一步。

The neuroendocrine cells in fresh specimens of 40 prostatic carcinoma,20 benign prostatic hyperplasic and 10 normal prostatic tissues were studied with transmission electron microscopy and their immunohistochemical charatreristics were contrasted by using anti-CgA,NSE and six kinds of hormonal antibody under TEM.Carcinomatous NE cell were found in 32 out of 40 cases with prostatic carcinoma.

应用透射电镜技术对40例前列腺癌、20例前列腺增生症及10例正常前列腺组织的神经内分泌细胞进行观察，并与抗嗜铬粒蛋白A、神经元特异性烯醇化酶和6种激素抗体免疫组化技术进行对比观察。

A hybridized material consisting of polyacrylic acid and kaolin is found to have high water absorbent performance.This polymer/inorganically hybridized material is synthesized by polymerization and cross linking reaction.

在高岭土存在下，以 N，N-亚甲基双丙烯酰胺作交联剂，以过硫酸钾作引发剂，部分中和的丙烯酸单体进行聚合交联反应，合成高聚物/无机杂化高吸水性材料。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

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。