查询词典 reduction

Lightfoot et al have developed one of these iridium-based systems for the stereocontrolled synthesis of lilial by asymmetric reduction of an allyl alcohol and subsequent oxidation of the alcohol.

Lightfoot等发展了一种基于铱的系统，通过烯丙醇和第二阶段酒精氧化的不对称还原，用来进行铃兰醛的立体控制合成。

The potentials of oxidization and reduction for amaranth decolorization on ACF were ascertained at 0.6V and-0.4V, respectively.

确定了ACF上苋菜红发生氧化和还原反应的电极电位分别是0.6V和-0.4V。

This brings out the ambiguity of the concept of reduction when applied to the philosophy of mind.

这带来了还原概念的含混，当用在心灵哲学的时候。

ResultsA significant reduction in time to achieve hemostasis and time to ambulation was associated with use of the Perclose.

摘要］目的比较心导管术拔鞘管后，采用经皮血管缝合器止血与人工压迫止血的效果。

Then Doripenem came into the market in the July ,2005. We studied the synthesis of Doripemen.Firstly, we synthesized the chemical 2 from the starting material------o-hydroxylphenylacylamine through Reformastky reaction, alkylation, Diekmann reaction, enolization, esterification and etc. Secondly, we synthesized the chemical 3 from L — hydroxylproline through the protection of carboxyl, amidogen and hydroxyl group, reduction by NaBr, SN_2 substitution and Mitsumobu reaction.

我们以水杨酰胺为起始原料，经Reformatsky反应、烷基化、Diekmann环合、烯醇化、酯化等反应合成双环母核2；再从L-羟基脯氨酸出发，经酯化保护羧基、保护氨基、保护羟基、硼氢化还原酯得醇、Sn2取代和Mitsumobu反应等合成巯基侧链3；最后由化合物3经脱保护、水解得硫醇，和化合物2在二异丙基乙基胺的作用下缩合，最后Pd／C催化脱保护，历经16步反应最终得到产物多尼培南。

To our knowledge, however, it has never been used for reductive amination of carbonyl compounds, nor for reduction of pre-formed imines.

可是据我们所知，它还从来没有被用于羰基的还原氨化和用于一个已制亚胺的还原。

The researchers said that the increase of amine makes fat reduction.

研究人员表示，复合胺的增加会使得脂肪减少。

It is first reported and studied systematically about the changes occured during calcination, reduction and re-oxidation treatments of Pt ammine complex supported on β zeolite.

一。首次系统地研究了β沸石上Pt胺化合物经分解、还原及再氧化等处理过程中发生的变化，并提出关于Pt粒子大小及其状态变化的模型。

The results showed that methamidophos inhibited the growth and activity of bacteria, Actinomyces and Azotobacter at different degree, but stimulated the growth of fungi; the results also showed that soil respiration and ammonification was stimulated, however, soil nitrogen fixation, nitrification and Fe－reduction was inhibited.

结果表明，甲胺磷对细菌、放线菌和固氮菌群的生长具有不同程度的抑制作用，而对真菌却有一定的刺激效应；土壤的呼吸作用、氨化作用增强，自生固氮能力、硝化作用以及铁离子价数转换作用减弱。

Ammonium hydroxide solution, and can glucose, such as formaldehyde reduction effect produced by the reaction,"Silver Mirror." Industrial applications of inorganic.

氢氧化铵溶液中，能和葡萄糖、甲醛等起还原反应生成"银镜"。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。