氨基化

Based on the experimental results, it could be consequentially concluded that N-methoxycarbonylation of aromatic amines was followed by the exclusive N-methylation of methyl N-aryl carbamates during the reaction process.

苯环上有钝化基团的一级芳胺反应活性比较好，获得N-甲基-N-芳基氨基甲酸甲酯的产率较高，反应时间也较短；而苯环上活化基团的存在，则会降低一级芳胺的反应活性。

Coli. The protein was expressed in a soluble form and as a fusion protein. There was a 6 histidines tag at its amino acid terminus. It was purified by immobilized metal ion affinity chromatography under native conditions.

所表达的蛋白是一种可溶性的融合蛋白，其氨基端带有6个组氨酸的标签，因此可以用固定化金属离子亲和层析法在非变性条件下进行纯化。

IGAD by sodium alginate can produce γ-aminobutyric acid well which may possibly be used as an industrial method to produce GABA.

海藻酸钠法固定化谷氨酸脱羧酶可以很好的转化谷氨酸钠生成γ-氨基丁酸，具有实用的潜力。

However, these LeuRS mutants can mischarge tRNA〓 isoacceptors, indicating that the editing ability of these LeuRS mutants were impaired to varying extents also.

E292突变后的LeuRS变种酶能够误氨基酰化tRNA〓，表明它们的编校功能受到不同程度的损伤。

(1) FFN is a good vector for gene transfection, it can successfully transfect the gene into target cells.

（1）氨基硅烷化Fe3O4纳米颗粒是良好的基因转运载体，可将外源性基因成功的转入靶细胞。

The conformational analysis of the various tautomers of clonidine in both neutral and protonated forms have been investigated using HF/6-31G* method.

采用HF/6-31G*方法，对氨基型和亚胺型可乐定中性分子以及质子化的可乐定分子进行了构象分析。

In this thesis, effects of common factors in yeast extract production with autolysis on yield and total amount of amino acid nitrogen in supernatant, degradation of RNA and saccharides during autolysis were studied, in which fresh baker\'s yeast was used as material. Extraction of 5\'-phosphodiesterase from barley rootlets was also studied. The optimum technology conditions of yeast extract production was determined by comprehensive considering results of above-mentioned study.

本论文以新鲜面包酵母为原料，研究了自溶法生产酵母抽提物过程中的影响因素对得率、上清液氨基氮总量、自溶过程中RNA降解及糖类物质降解的影响，同时还对麦芽根中5'-磷酸二酯酶的提取进行了研究，综合以上研究结果优化了酵母抽提物生产的工艺条件；此外，从酵母自溶残渣中提取了酵母细胞壁多糖，并对该多糖的乳化性及酯化修饰进行了研究，取得了下述主要研究结果。1。

Aminophenyl ketones can be synthesized from different anilines and nitriles in the presence of boron trichloride, or from anilines by Friedel-Crafts reaction.

邻氨基芳香酮则可以由不同取代的苯胺与不同的腈在三氯化硼的作用下生成，或者通过傅克酰基化反应得到。

The intermediate 5-amino-1H-pyrazole-4-carboxylic acid ethyl ester prepared in the first part underwent successively hydrazinolysis, condensations with ketene dithioacetals and alkylations to give rise to the dipyrazolyhnethanes.

从第一部分中的中间体5-氨基-1H-吡唑-4-羧酸乙酯开始，经过肼解、与乙烯酮二硫代缩醛的缩合反应和烷基化反应，合成了二吡唑基甲酮类化合物。

Experimental Center of National Level One, Hubei Traditional Chinese Medica l College, Wuhan 430061）Abstract To investigate the protective effects of Jiaweisinisa n on acute liver injury induced by intraperitoneal injection of D-ga lac-tosamise, serum superoxide dismutase, malondialdehyde , glutathioe contents were measured. The pathological changes of liver wer e observed simultaneously. The results showed that JWSNS could decrease serum MD A content, but increase serum SOD and GSH activities in acute liver injury induc ed by D-GalN. It was also found that JWSNS could alleviate the degeneration and necrosis of the hypatocytes.

为研讨加味四逆散防治肝损伤的作用机理，通过动物试验，先用加味四逆散预防给药，再采用D-氨基半乳糖造成大鼠急性肝损伤模型，然后检测大鼠血清超氧化物岐化酶、丙二醛、还原型谷胱甘肽水平，同步观察该方对急性肝损伤大鼠体内脂质过氧化反应及肝脏病理改变的影响，结果表明该方可明显升高大鼠血清SOD、GSH水平，降低MDA水平，肝脏病理学检查亦表明该方使肝细胞变性坏死程度减轻。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。