二聚体

Six 3,6-dichloropyridazine-derivatized cinchona alkaloid catalysts were synthesized and applied in IFB reaction.

二氢奎宁二聚体2c最差(56%ee)，与环己二酮相比，环戊二酮作为反应原料时，产物的ee值降低。

N,N-dimethyl-N'-(2-trifluorometyl-1-pentafluoroethyl) perfluoro propenyl propane diamine and N,N-dimethyl N'-(2-trifluorometyl-1-pentafluoroethyl) perfluoro propene propane diamine were prepared by the reaction of hexafluoropropene dimer and N,N-dimethyl propanediamine in the molar ratio 1:1.0 at about 35℃for 8h, and the structures of I were identified by IR and NMR spectra.

本文以六氟丙烯二聚体和N，N-二甲基丙二胺为主要原料合成了两种含氟中间体叔胺——N，N-二甲基-N'-(2-三氟甲基-1-五氟乙基)全氟丙烯基丙二胺和N，N-二甲基-N'-(2-三氟甲基-1-五氟乙基)全氟烯丙基丙二胺，用薄层色谱和柱色谱等方法对产品进行分离提纯，并运用红外光谱和核磁共振等分析手段对其结构进行了表征。

Though the molecular mass and the hypoglycemic activity of myristic acid modified HIDesB30 are both consistent with Detemir, the expression system, purification artwork and the methods of modification were different from Detemir.

本研究实现了含短C肽的人胰岛素原类似物HMPIDesB30在毕赤酵母中的高效分泌表达，表达量达1 g/L，分泌表达的重组蛋白HMPIDesB30未出现糖基化，未形成二聚体和多聚体，并具有生物学活性。

The structure of ArsA ATPase with its ligand, arsenite, either on membranes or in solution, was revealed. The current trimeric ring-like structure of this protein doubts the previous dimeric model and gives deeper insight on this protein's physiological roles.

对亚砷酸根复合体ArsA蛋白质分子结构的揭示显示了该蛋白在亚砷酸根存在情况下，在膜上和水溶液中都是环形三聚体，对前人的二聚体模型假说提出了置疑，并为解释它的生理功能提供了重要的结构信息。

But the yields decreased to 71~37％ in n-propanol, i-propanol and i-butanol, with another trimeric byproduct 1-oxo-13c-(2-naphthyloxy)-1, 13c-dihydro-dibenzo xanthenes (29) increasing up to 30％ yield.

而在正丙醇、异丙醇和异丁醇中二苯并咕吨4~6的产率下降至71~37％，另一个二聚体副产物1-氧代-13c-（2-萘氧基）-1，13c-二氢-二苯并-咕吨（29）的含量增加，产率可达30％。

A few covalently bonded C〓 dimers and trimers in the adlayer were observed, which is consistent with the experimental observations.

表面上的C〓沉积层保持着局域有序的结构，观察到了共价键结合的二聚体和三聚体，与实验观察结果相符合。

These amorphized phases are composed of the dimers and polymers packing densely and randomly.

这些压致非晶态是由堆积紧密、取向无序的二聚体或多聚体所组成的。

The scavenging effect of polyphenols extracted from grape seeds such as monomers, dimers and trimers on superoxide and hydroxyl radicals is studied with the ESR spin trapping method. The results are comparable with those obtained from chemiluminescence method. It has been proved that polyphenols extracted from grape seeds have a strong scavenging effect on Oxygen free radicals. Probably this is the reason why drinking some grape wine every day is good for one's health.

用ESR自旋捕集技术研究了从葡萄籽分离的单体、二聚体和三聚体等多酚类物质对羟基自由基和超氧阴离子的精除作用，并与化学发光法的测定结果进行了比较，得到了较一致的结果，证明葡萄籽中多酚类物质对氧自由基的确有较好的清除作用，这很可能是喝少量葡萄酒有利于身体健康的原因。

Water samples collected off Malaysia and the U.S. Pacific coast and in the northern Pacific Ocean all contained styrene monomers, as well as styrene dimers and trimers, reported Katsuhiko Saido of Nihon University in Chiba, Japan.

日本大学千叶校区的卡素西口赛一朵称：收集于远离马来西亚海岸、美国太平洋海岸和北太平洋的水样本都含有苯基团单体，二聚体和三聚体。

The plant PAPs are dimer or tetramer with molecular weight around 110 or 240 kDa. The function of plant PAPs is unknown.

植物中的紫色酸性磷酸酶以二聚体和四聚体的形式存在，分子量约为110或240kDa，它们的功能不详。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。