碳烯

We immobilized carbonic anhydrase onto the surface of membrane oxygenator of polymethyl pentene to enhance the removal of carbon dioxide in blood by two steps.

采用两步法将碳酸酐酶共价键合在聚甲基戊烯(Polymethyl-pentene， PMP)膜式氧合器表面以提高其清除血液中CO2的能力。

Seven of them have not been reported.Their structures were confirmed by IR,~1HNMR,MS,and element analysis. 4.Meanwhile,the green methylation procedure of imides was developed by using dimethyl carbonate as methylation reagent.A series of imides,for example,phthalimide,3,4-dibromo-maleimide and succincide were used for substrates.The effects of DABCO(1,4-diazabicyclo [2.2.2]octane)and DBU(1,8-diazabicyclo[5.4.0]undec-7-ene)as a catalyst in this kind of reactions were investigated.2-Bromo-3-(1-methylindolyl-3-yl)-1-methyl-1H-pyrrole-2,5-dione was prepared by using dimethyl carbonate,which further expanded the use of dimethyl carbonate,as a green agent in organic synthesis.

在以硫酸二甲酯为甲基化试剂对3，4-二溴马来酰亚胺进行N-甲基化反应合成3，4-二溴-N-甲基马来酰亚胺的同时，以碳酸二甲酯为甲基化试剂，对3，4-二溴马来酰亚胺、邻苯二甲酰亚胺、琥珀酰亚胺等酰亚胺类化合物的N-甲基化反应进行了研究；考察了1，4-二氮杂双环[2.2.2]辛烷，1，8-二氮杂双环[5.4.0]十一碳-7-烯、碳酸钾和四丁基溴化铵等作为催化剂对碳酸二甲酯N-甲基化反应的反应时间和收率等的影响，并应用碳酸二甲酯为甲基化试剂，合成了N-甲基-3-溴-4-(1-甲基-吲哚-3)-马来酰亚胺。

Two compounds have been isolated from hard coral Porites Compressa Dana,their structures were determined by IR,MS, HNMR, 13CNMR analysis.The two compounds are: batyl alcohol,(2) N-[l--2-hydroxyl--3,7-heptadecadienal]- h exadecanamide.

从采自西沙群岛的扁缩滨珊瑚中的石油醚部分分离出两个化合物，经IR、MS、~1HNMR、~(13)CNMR等波谱方法鉴定，其结构分别为(1)鲨肝醇，(2)N-1-羟基甲基-2-羟基--3，7-十七碳二烯基十六酸酰胺。

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Skeleton and chain syntheses have become highlights of study and development of new carbapenems.

骨架和侧链的化学合成是碳青霉烯类药物研究和开发的重点和热点方向。

Xanthophyceae ; picoalgae ; amino acid ; polyunsaturated fatty acid ; EPA

黄藻；超微型藻；氨基酸；多不饱和脂肪酸；二十碳五烯酸

The result of the study indicates that combining 40% sallower seed oil with 59% mixture of octadecadienoic acid and elaeosteric acid is the best compatibility of medicine to compare with high blood fat group.

试验结果证实了基础药效学研究的有效性，40%红花油与59%混合十八碳二、三烯酸及1%的维生素E组成的配方降血脂效果最好。

In the course of our study the chemistry of arenes contaning allylic acetates moiety under the catalysis of palladium, we found an efficient synthesis of benzocycles via intramolecular Friedel-Crafts reaction of halogen free 6-acetoxy-4alkenyl arens.

我们在设计钯催化的碳—氢键活化时，发现了含有烯丙基醋酸酯侧链的芳烃的三氟醋酸促进的分子内的Friedel-Crafts反应，从而为有效合成苯并六元环结构提供了一个方便的方法。

Alkanes, alkenes, and alkynes are all hydrocarbons (compounds made up of hydrogen and carbon only).

链烷、链烯和链炔都是碳氢化合物（纯净的碳和氢所组成的化合物）。

Alkenes have one or more double bonds between carbon atoms, where two pairs of electrons are shared.

链烯有一个或多个共价键，即碳原子分享两对电子。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新