查询词典 cis

In this paper, chiral molybdenum or tungsten 2'-pyridinyl alcoholate complex catalyzed asymmetric epoxidation of cis-1-propenylphosphonic acid in H2O was reported.

目前磷霉素的生产是通过以Na2WO4为催化剂、在乙醇中以30%的H2O2将顺丙烯膦酸环氧化得到消旋产物，再利用α-苯乙胺进行拆分而得到[2，3]。

We found that when acetone was used as solvent, in the presence of TFA, cis-4-pyrrodin-1-yl-L-proline could catalyze the direct asymmetric aldol reaction between acetone and 4-nitrobenzaldehyde with 84% ee.

研究发现，该催化剂以丙酮为溶剂时，加入催化剂等当量的三氟乙酸可以较好的催化丙酮与对硝基苯甲醛之间的直接不对称Aldol反应，得到84%的ee值。

The products are methyl vinyl ether (cis- and trans-), allyl alcohol and propen-2-ol.

计算得到的丙酮分子的5个异构化反应通道分别对应3种异构化产物，乙烯甲基醚、丙烯醇和1-丙烯-2羟基。

In 2002, an antiterrorist center was established in the CIS.

在2002年，反恐怖中心在俄罗斯建立。

As for the RF Armed Forces Antiterrorist Center creation, we believe that its functions should be somewhat wider than those of the CIS ATC.

关于俄罗斯反恐怖中心的建立，我们认为其功能应该比独联体反恐怖中心的功能更宽泛一些。

Boulder, February 27, 2008 – Emerson Process Management announces an agreement with Argosy Technologies, Ltd. to provide flowmeters used in upgrading AGZU "Sputnik" oil separator systems in Russia and the CIS.

Boulder 2月27日消息——艾默生过程管理宣布与Argosy 技术有限公司达成一项协议，提供用于升级俄罗斯和独联体国家AGZU "Sputnik"石油分离器系统的流量计。

This study demonstrates optically and spatially band-tunable color cone lasers based on DDCLC cells with a photoisomerizable chiral dopant. The band-tunability is attributable to the recovery of the helix of the CLC resulted from the trans-cis isomerization induced decrease of the helical twisting power of the chiral dopant.The more the chiral cis-isomers are produced, the larger the tuned lasing band is.

本文主要藉由在胆固醇液晶射中加入可光致同素构化亲手性材，使胆固醇液晶所输出的彩色锥角射波段可光调控及空间调控，其射输出波段可调控的机制是由於当同素构化反应产生后，光致同素构化亲手性材的HTP值低并造成胆固醇液晶距改变，藉此间接调控输出的射波长，同素构化的程愈高，胆固醇液晶所输出的彩色锥角射波段可调控范围也愈大。

According to the results of the examination, the stronger the electron-withdrawing protective group of imines, the better the cis-selectivity of the reaction, 68% yield, trans:cis is 99:1 diastereoselectivity could be leaded by Ts-imines (4-methyl-N-methylene-benzenesulfonaides) with a substituent [2,4-(CH3O)2C6H3], Substrate scope investigation revealed that a wide variety of ketenes and imines could react smoothly to afford corresponding,β-lactams.

实验结果表明，亚胺的保护基团吸电子能力越强，越有利于顺式产物的生成。对甲苯磺酰基保护的取代基为2，4-二甲氧苯基的亚胺参与的该反应可得到68%的产率，反式：顺式=99：1的非对映选择性。底物拓展过程中发现Staudinger反应适用于多种不同的亚胺与烯酮。

And the asses of Cis, Sauls father, were lost: and Cis said to his son Saul: Take one of the servants with thee, and arise, go, and seek the asses.

撒乌耳的父亲克士有几匹母驴，走迷了路，克士遂对儿子撒乌耳说：「你带一个仆人，起身去寻找那些驴。

Of 17 objective responses, nine (38%) were partial responses, including two that were greater than 90%. Five patients (21%) had ORs lasting more than five months. Clinically meaningful PRs occurred in five of seven patients with pancreatic cancer, and in all three with neuroendocrine cancers.

其他与70 mg/m2的CIS有关的副作用包括第III级的耳毒性，以及三名患者中有二人出现第二级的神经病变，因此研究人员估计CIS的最高容许剂量为60 mg/m2，并且建议以此剂量作为第 II 阶段的研究剂量。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。