烯

The speed of electrophilic addition reaction of Alkene is inferenced greatly by the electron-withdrawing group or electron-releasing group on C=C of Alkene And the main addition product is decided by stability of carbonium ion.

烯烃C=C上连有供电子基和吸电子基时，对于烯烃亲电加成反应速度的影响是很大的。加成产物是由碳正离子中间体的稳定性来决定。

Not only could the ethanol decoction reserve the characters of the water decoction, reducing the carene and pinene, but also it enriched the terpenes and reduced the fatty acids in the water decoction.

YL2000醇提制剂保留了水煎降低蒎烯和蒈烯含量的特点，而且进一步富集了水煎剂中的萜类有效成分，降低了脂肪酸类成分。

The components were calculated with normalization method and compared with the references. Result: 68 compounds have been identified; comparing with the water decoction, the amount of fatty acids was decreased while the amount of terpenes was increased; at the mean while, carene and pinene which were abundant in single herb were not detected.

结果：从YL2000醇提制剂中初步分离鉴定了68个成分；同水煎剂相比，醇提制剂提高了挥发油的得率，去除了大量脂肪酸类成分，但保留了水煎剂中的88％的萜类成分，并将其含量提高了约6倍；同单味药材相比，醇提制剂和水煎剂均富集了萜类成分而大大降低了蒎烯和蒈烯类成分的含量。

The hydration reaction catalyzed by the ion-exchange resin,was used to reduce the content of caryophyllene in the heavy turpentine and get the longifolene of high purity.

以离子交换树脂作催化剂，利用水合反应降低重质松节油中的石竹烯含量，再经过提纯获得高纯度的长叶烯。

The results showed that:1 78 volatile constituents were identified in the oil,which were mainly caryophyllene,1,5,9,9-tetramethyl-1,4,7-cycloundecatriene,germacrone,eudesmol and furfural,etc.2 The aroma quality and intensity of cigarette were improved,irritation was reduced,and a...

结果表明：①满山红挥发油中共鉴定出78种挥发性成分，主要有石竹烯、1，5，9，9四甲基-1，4，7环十一碳三烯、杜鹃酮、桉叶醇和糠醛等；②该挥发油具有提高B2F和C3F等香气质和香气量，降低刺激性和改善余味的作用。

Heavy turpentine ; longifolene ;β-caryophyllene ; hydration ; ion-exchange resin

重质松节油；长叶烯；β-石竹烯；水合反应；离子交换树脂

The qualitative analysis of the volatiles emitted from tea plants infested by Ectropis obliqua Prout with GC-MS or zNoseTM showed the similar results, however the relative contents of-3-hexen-1-ol,benzyl nitrile,indole,-caryophyllene obtained from both showed a certain difference.

结果表明：GC-MS与zNoseTM对茶尺蠖取食诱导的茶树挥发物的定性分析结果差别不大；但两者测定茶尺蠖取食诱导的茶树挥发物中顺-3-己烯醇、苯乙腈、吲哚、反-石竹烯等4种组分的相对含量有一定差异。

Our company supply raw materials and related intermediates as follows: Second dibutyryl cAMP calcium, voriconazole, terbinafine, vecuronium amines, cAMP, thiamphenicol, a chlorophenol hydrochloride esters, card network sodium phosphate tilmicosin, foscarnet, lornoxicam, Tilmicosin, Cephalosporium aspirin acid, ceftiofur hydrochloride, ceftiofur sodium, Ozagrel, ondansetron hydrochloride ketones, hydroxyurea, ticarcillin sodium, telmisartan, esmolol hydrochloride, hydrochloric acid Daguan Nikkomycin, adefovir dipivoxil, buflomedil hydrochloride, granisetron hydrochloride, warfarin sodium,-methyl gabexate acid, nicergoline, pantoprazole sodium,·, tegafur, cefepime hydrochloride, vecuronium bromide, hydrochloric acid meclofenoxate, sertraline hydrochloride, Cefonicid amine salt, aztreonam, ticarcillin, cefdinir, cefodizime sodium, sodium ferulate, colloidal pectin secretion, 2,3 - cyclopentene and pyridine, Piperacillin acid, cefetamet US-acid, hydrochloride Cefmenoxime ,3-TZ, 2 - deoxy-D-glucose, two-amidine urea benzene, sodium Cefonicid, Cefonicid intermediates, ester Cefamandole sodium, Cefalotin acid, intermediates cefpirome, cefepime sulphate, cefepime intermediate nucleus of cefepime, cefpirome nucleus, Cefamandole sodium, ceftriaxone new active ester, oxaliplatin, cyclophosphamide vary gland amines, polyene match him.

我公司供应的原料药及相关中间体为：二丁酰环磷腺苷钙、伏立康唑、盐酸特比萘芬、维库溴胺、环磷腺苷、甲砜霉素、盐酸甲氯酚酯、卡络磺钠、磷酸替米考星、膦甲酸钠、氯诺昔康、替米考星、头孢匹胺酸、头孢噻呋盐酸盐、头孢噻呋钠、奥扎格雷、盐酸恩丹西酮、羟基脲、替卡西林钠、替米沙坦、盐酸艾司洛尔、盐酸大观霉素、阿德福韦酯、盐酸丁咯地尔、盐酸格拉司琼、华法林钠、甲磺酸加贝酯、尼麦角林、泮托拉唑钠、普拉洛芬、替加氟、盐酸头孢吡肟、维库溴铵、盐酸甲氯芬酯、盐酸舍曲林、头孢尼西胺盐、氨曲南、替卡西林、头孢地尼、头孢地嗪钠、阿魏酸钠、胶体果胶泌、2，3-环戊烯并吡啶、哌拉西林酸、头孢他美酸、头孢甲肟盐酸盐、3-TZ、2-脱氧-D-葡萄糖、双脒苯脲、头孢尼西钠、头孢尼西中间体、头孢孟多酯钠、头孢噻吩酸、头孢匹罗中间体、头孢吡肟硫酸盐、头孢吡肟中间体、头孢吡肟母核、头孢匹罗母核、头孢孟多钠、头孢曲松新型活性酯、奥沙利铂、异环磷腺胺，多烯他赛。

Synthesis technology of cinnamyl methyl fumarate containing α,β-unsaturated carbonyl group and its antimicrobial activity was studied.

以α，β-不饱和羰基结构为母体设计合成反丁烯二酸桂醇甲酯，并对反丁烯二酸桂醇甲酯的抗菌活性进行了研究。

Dehydration process based on hollow fiber composite membrane is one of the crucial and effective methods to remove water vapor from industrial gases such as light hydrocarbon, compressed air, natural gas and so on. Dehydration of propylene with VP method was studied in the thesis. We prepared the PVA/PS、CS/PS and PVA-CS/PS hollow fiber composite membranes by spread method. The permeation behavior of water vapor among coagulable light hydrocarbons through composite membranes and asymmetric membrane was researched by vapor permeation method. Also a differential mathematical model was established which can describe dehydration of gas phase propylene.

本论文以采用蒸气渗透法脱除丙烯中微量水分为目标，制备了 PVA/PS、 CS/PS、PVA-CS/PS 中空纤维复合膜；研究了可凝性轻烃蒸气中的微量水分在复合膜、非对称膜中的渗透行为，建立了描述丙烯气相脱水的数学模型，并进行了模拟计算；深入探讨了水蒸气在交联 PVA 致密膜中的渗透机理。

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