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Result showed that conversion of isobutylene reached 80% and selectivity of diisobutylene was 90% when reacted at 180 oC with mass airspeed of 3h-1 by self-made R2 catalyst.

利用分子筛催化异丁烯合成二聚异丁烯，在固定床反应器中考查了温度、空速对异丁烯齐聚反应的影响。

The process can convert over 95% isobutylene in C 4 olefin into diisobutylene or isooctene in the present of acid cation exchange resin catalyst,and partial 1-butylene also take part in the reaction.

介绍了一种混合碳四烯烃叠合利用的预反和催化蒸馏组合技术，该技术以酸性阳离子交换树脂为催化剂，可以将混合碳四烯烃中的95%以上的异丁烯叠合反应生成二异丁烯和异辛烯，且部分正丁烯也参与二聚或共聚。

In jail, Valentine fell in love with his jailor's daughter and wrote the 1st ever Valentine Letter for her, and signed it "From your Valentine".

在狱中瓦伦丁与看守的女儿相爱并给她写了一封信，署名是"你的瓦伦丁"，这封信被后人看成了是有史以来的第一封"情书"，情人节也因此被称为圣瓦伦丁节。

In this paper,microbial production of 2,3-BD was performed by Klebsiella pneumoniae using glucose or Jerusalem artichoke tubers as carbon source.Additionally,a novel aqueous two-phase system for the recovery of 2,3-BD from fermentation broth was developed employing short chain alcohol/inorganic salt.

针对这些问题，本论文研究了生物转化法生产2，3-丁二醇的工艺，并采用新型双水相体系对发酵液中的2，3-丁二醇进行分离萃取，最后考察了利用廉价的非粮原料菊芋作为底物发酵2，3-丁二醇的可行性。

To study the effects of different freezing temperatures on the cells structures and texture of kiwi fruit dices.

为研究不同冻结温度对猕猴桃果丁细胞结构和质构特性的影响，将猕猴桃果丁分别在温度-20，-25，-30℃速冻温度下冻结，研究速冻前后猕猴桃果丁细胞结构、穿刺力、VC和汁液流失率的变化。

Serious genius that the mere lambent sheetlightning playing under the edge of the summercloud does to the electric deathspark hid in its womb.

他们说他像菲尔丁；他们谈论他的才智、幽默和诙谐能力。他之近似菲尔丁，犹如老鹰之近似秃鹫；菲尔丁会扑向腐尸，而萨克雷却从不如此。

The course of thermal reaction for iso-butyl mercaptan, di-n-butyl sulfide and di-n-butyl disulfide is free radical mechanism.

对于异丁硫醇、丁硫醚、丁基二硫化物的热反应，其热转化的途径是自由基机理。

The invention discloses a method for synthesizing acetyl tributyl citrate, which uses tributyl citrate and acetic anhydride as reaction articles, uses naphthalenesulfonic acid methylal as the catalyst during the ester synthesis process, filtering the catalyst from reacted articles after reaction, water-washing, alkaline-washing, distilling the filtrate to obatin acetyl tributyl citrate.

本发明公开了一种合成乙酰柠檬酸三丁酯的方法，它以柠檬酸三丁酯、乙酸酐为反应物，在酯合成过程中用萘磺酸甲缩醛作催化剂，反应结束后，将催化剂从反应后的物料中过滤出来，滤液经水洗、碱洗、蒸馏获得乙酰柠檬酸三丁酯。

His tactful, patient, encouraging editor at Faber（注5）, Charles Monteith, was a lifeline to him, a friend on whom he relied more than any other during the second half of his life.

菲伯出版社的编辑查尔斯蒙塔斯负责戈尔丁的稿件。查尔斯经验丰富，十分耐心，又时常鼓舞激励戈尔丁。对于戈尔丁来说，他就是自己的救生索，是后半生他最为依赖的一个朋友。

Objective To study the efficacies of quadruple regimens for thetreatment of peptic ulcer disease and eradication of Helicobacter pylori.Methods 102patients with Hp associated peptic ulcer were randomly divided into three groups,groupA（n=98）received sanjiuweitai-based quadruple regimen（Yangweishul.2g,bid+ranitidine150mg,bid+amoxicillin500mg,bid+metronidazole400mg,bid）;group B（n=31）received colloidal bisˉmuth subcitrate110mg,bid+ranitidine150mg,bid+amoxicillin500mg,bid+metronidazole400mg,bid;groupC（n=23）received ranitidine150mg,bid+amoxicillin500mg,bid+metronidazole400mg,bid.Antibiotics were griven for two weeks,the other drugs were given for six weeks,the efficacies were determined by gastroendoscopy or 13 C—UBT.

目的 探讨四联疗法对消化性溃疡的治疗作用及根除幽门螺杆菌的效果方法将102例胃镜证实消化性溃疡者随机分为3组，A组48例给予养胃舒1.2g+雷尼替丁150mg+阿膜西林500mg+甲硝唑400mg，bid；B组31例给予铋剂220mg+雷尼替丁150mg+阿莫西林500mg+甲硝唑400mg，bid；对照组（C组，23例）给予雷尼替丁150mg+阿莫西林500mg+甲硝唑400mg，bid；以上药物除抗菌药物只服用2周外，其余药物服至6周末疗程结束，第7周复查胃镜和 13 C呼气试验。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。