查询词典 ruthenium

The result: raw materials as little-known as terbium, samarium and ruthenium are starting to command a level of attention once reserved for energy and food security.

为此，一些少有人知的原材料，如铽、钐和钌，已开始引起高度关注。而以往，只有能源和粮食安全曾受到这种程度的关注。

In the present work, we examined the molecular organization of the stratum corneum lipid by confocal microscopy, electron microscopy using ruthenium tetroxide staining and atomic force microscopy.

本计画最主要之目的，即尝试利用Rutheniumtetroxide 染色下的电镜观察，及配合原子力显微镜和共轭焦显微镜，在不同切面下，由纵切、横切及斜切各种不同的层面来探讨角质细胞间脂肪分子之排列，以期能由对形态结构之厘清，而对Skinbarrier 之功能有更进一步深入的了解。

This article reviews recent progress in nucleophilic reaction s of the a - carbon in vinylidene ruthenium complexes.

综述了近几年钌亚乙烯基络合物中间体α-碳的亲核反应。

The presence of a gem-diphenylmethylene moiety at the vinylidene ligand with the appropriate terminal vinyl or alkynyl group along with the proper steric environment implements such a novel reactivity in the ruthenium vinylidene complexes.

因此推测丙二烯基与末端的不饱和键确实可以进行一些分子内的反应，但是gem-diphenylmethylene 官能基需位於适当的立体位置方可进行。

The results obtained are as follows:(1) intrarenal artery injection of capsaicin (20, 40, and 60 nmol/kg) increased the renal afferent nerve activity in a dose-dependent manner with unchanged arterial pressure;(2) pretreatment with ruthenium red (40 mmol/kg), a capsaicin receptor antagonist, completely abolished the effect of capsaicin; and (3) pretreatment with a nitric oxide synthase inhibitor L-NAME ( N6-nitro-L-arginine methylester, 0.1 mmol/kg), significantly enhanced the ARNA response to capsaicin.

结果表明：(1)肾动脉内注射辣椒素20、40和60nmol/kg可呈剂量依赖性地兴奋肾传入纤维的活动，而动脉血压不变；(2)静脉内预先应用辣椒素受体阻断剂钌红(40 mmok/kg)，可完全阻断辣椒素对肾传入纤维的兴奋作用。(3)静脉内预先注射一氧化氮合酶抑制剂L-NAME(0.1 mmok/kg)，能延长并增强肾传入神经对辣椒素的反应。

This paper concludes the study methods of oil and source rock correlation for heavy oils with different degree of biodegradation;correlates the heavy oil and source rock in the western depression of Liaohe oilfield using the method of asphaltic ruthenium ion catalysis-oxidation and analysis of wrapped hydrogen in asphalt.

总结了不同生物降解程度的稠油油源对比相应的研究方法；利用沥青质钌离子催化-氧化、沥青质中包裹烃等新方法对辽河断陷西部凹陷稠油油源进行了对比研究。

The asymmetric hydrogenation of prochiral ketones is one of the most efficient methods of producing enantiomerically enriched secondary alcohols. The ruthenium complex RuCl_2[P(C_6H_5)_3]_2--DPEN(DPEN=1, 2-diphenylethylene-diamine) was applied to the asymmetric hydrogenation of benzalacetone.

具有光学活性的烯丙基醇是合成许多生理活性药物的重要中间体，前手性酮不对称加氢反应是制备具有光学活性仲醇的一种重要方法。

Stability of the ruthenium benzylidene complexes can be enhanced by introducing thechelating ligands.

通过螯合配位提高了钌卡宾配合物的稳定性。

Six ruthenium benzylidene complexes (60-65) containing pyridine derivative ligandsare prepared and three of them are new.

为此，合成了六个吡啶及其衍生物配位的钌卡宾配合物60-65，其中三个是新的。

RCM reactions of 49 and 50 are chosen to evaluate the catalytic performance ofthe complexes 46-48 because they are informative and simple to manipulate. The resultsindicated that ruthenium benzylidene complexes 46 and 48 possess significant thermalstability and cyano group tolerance.

由于烯烃49、50的闭环交互置换反应简单、清晰，故用来考察新钌卡宾配合物的催化性能，结果表明配合物46、48具有良好的热稳定性及耐氰基性能。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。