查询词典 reductive

The first part reports some new reactions of BNAH, especially the reductive cyclizations of some activated ethylenic compounds to five-membered carbocycles and a sevenmembered enolic ether ring, both of which may be useful in related areas.

详细论文的研究对象是重要的辅酶NADH的化学模型1-苄基-1，4-二氢烟酰胺。论文包括一个对近期该领域进展的综述和三部分工作。

Appear after this problem, added before instantly the following day thick, color is erubescent and reductive, end to was ranked yesterday did not go up all the time line.

出现这个问题后，第二天立即把原来加粗、颜色变红还原，截止到昨天排名一直没有上线。

Organic pollution may cause dissolution and pyrite-stain of foraminiferal test. This can be attributed to the acid and reductive condition formed by over high organic content.

有机质污染在有孔虫特征上主要反映为壳体的溶蚀和黄铁矿化，这是由于过量的有机质导致介质的酸化和还原条件。

Two synthetic routes starting from 1,3-dihydroxyacetone and formamidine acetate as well as imidazole-4,5-dicarboxylic acid as starting material were investigated, and the reductive reaction of ethyl imidazole-4-carboxylate was also investigated.

本文对以1，3-二羟基丙酮和醋酸甲脒为原料和以4，5-二羧酸咪唑为原料合成4(5)-羟甲基咪唑的两条工艺进行了研究并优化，同时对4(5)-羧酸咪唑乙酯的还原反应进行了探索性实验。

Dihydroxyacetone; formamidine acetate; imidazole-4,5-dicarboxylic acid; optimizing process; ethyl imidazole-4-carboxylate; reductive reaction; 4(5)-hydroxymethylimidazole

关键字或关键词组： 1，3-二羟基丙酮；醋酸甲脒；4，5-二羧酸咪唑；工艺优化；4(5)-羧酸咪唑乙酯；还原反应；4(5)-羟甲基咪唑

Galactosidase can hydrolysis a -galactosis bond , namely it can hydrolysis galactosis complex of non-reductive ends binding α-bond, so it can hydrolysis oligosaccharides such as raffinose、 stachyose、 verbascose, et al. It also can hydrolysis heteropolysaccharide including α-galactosis bonds.

能催化α-半乳糖苷键的水解，即能水解非还原性末端以α键结合的半乳糖苷化合物，因此它能水解蜜二糖、棉子糖、水苏糖和毛蕊花糖等低聚糖，还能水解含有α-半乳糖苷键的杂多糖。

The illicit synthesis of this compound has been achieved most commonly by the reductive amination of phenyl-2-propanone 2, by the Leuckart formamidation of 2 followed by hydrolysis or by the reduction of ephedrine or pseudoephedrine 3 with hydriodic acid and red phosphorus.

此化合物非法合成的方法有，通过1-苯基-2丙酮的还原胺化作用；通过1-苯基-2丙酮的洛卡特氐反应后进行水解生成；在红磷、氢碘酸的参与下，通过还原麻黄素或伪麻黄素合成。

In recent years,many researchers have made helpful attempts on hydrometallurgical reductive leaching,and they open up a new way of thinking .

近年来众多学者对湿法还原浸出作了有益的尝试，开辟了新的思路。

In recent years, many researchers have made helpful attempts on hydrometallurgical reductive leaching, and they open up a new way of thinking.

指出更加注重综合利用和环保要求，开展现场加工等是未来锰结核处理技术的发展趋势。

Study on thermostable and salt-tolerant water-soluble polymers with super- high molecular weightChemical degradation of HPAM in aqueous solution and its influence factors werestudied. The oxidative degradation mechanism, including auto-oxidation and chainscission two processes, having longer kinetic chain length was established. Notably, inthe presence of the reductive impurities the oxidative degradation of HPAM inaqueous solution is remarkably accelerated.

2：线性超高分子量耐温抗盐水溶性聚合物的研究研究了部分水解聚丙烯酰胺水溶液中的化学降解作用及其影响因素，确立了它的氧化降解机制，包括自动氧化过程和链式裂解过程，具有较大的动力学链长，当有还原性杂质存在时，降解反应显著加速。

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。