酰化

Adding acetyl groups to proteins at specific locations -- a process called acetylation -- is one mechanism cells use to control protein activity.

在蛋白质特定的位置添加乙酰基的过程又叫做乙酰化，这是细胞控制蛋白质活性的一种机制。

Post-translational modification of proteins which contains phosphorylation, acetylation and methylation has attracted more and more attention because of its important role in organism.

蛋白翻译后修饰如磷酸化、乙酰化和甲基化等在生命活动过程中发挥的重要作用使其成为近年来的研究热点。

A mechanism involved in the second [5 + 1] annulation step, includinga formal [5 + 1] annulation and accompanied chlorovinylation, chloroformylation,amination and aromatization reactions, is proposed.

并对第二步反应机理进行了推测，其中包括了一个一般的[5 + 1]加成反应及伴随此加成反应而发生的氯化乙烯化，氯化甲酰化，氨化和芳构化反应。

METHODS The target compound was synthesized from 3,4-dimethoxyphenylacetic acid via halogenation, acylation, cyclization, alkylation and iodine substitution reaction.

以3，4-二甲氧基苯乙酸为原料，经卤化、酰化、环合、烷基化、碘取代等反应制得目标化合物。

The chemical method include treating with sulfuric acid,saponification,acylation, esterification, etc.

化学方法包括酸洗法、皂化法、酰化法和酯化法等。

The second synthetic strategy commenced from butane-1,4-diol 50, which underwent monobenzylation, Swern oxidation, enolization followed by acetylation and debenzylation to yield an intermediate 46 in an overall yield of 54% in a 4-step procedure.

第二条路线从1，4-丁二醇50开始，这个化合物经过单苄基化、Swern氧化、烯醇化随后乙酰化和脱苄基化共4步反应得到中间体46，总产率54％。

Ib was synthesized by condensation of phthalic anhydride with 2-methylresorcinol in fused AlCl〓/NaCl (5∶1), followed by selective acetylation, methylation, NBS bromination and condensation with sodium ethoxide.

邻苯二甲酸酐在熔融的三氯化铝-氯化钠(5：1)中和-2，6-二羟基甲苯环合得1，3-二羟基-2-甲基蒽醌〓后经选择性乙酰化、甲基化、NBS溴化、乙醇钠缩合得1-甲氧基-2-乙氧甲基-3-羟基蒽醌。

The present invention uses industrial polystyrene as raw material, under the protection of inert gas uses complex of acidylating agent and concentrated sulfuric acid as sulfonating agent to make sulfonation, and utilizes dector-blade casting process or other membrane-forming process to prepare polystyrene sulfoacid membrane with low sulfonation degree.

本发明涉及电化学的燃料电池技术，更具体是指低温直接甲醇燃料电池用聚苯乙烯磺酸膜及其制备方法。本发明是以工业级的聚苯乙烯为原料，在惰性气体保护下以酰化剂与浓硫酸的络合物作磺化剂，进行磺化，并通过流延法或者其它成膜方法制备低磺化度的聚苯乙烯磺酸膜。

Then we compared cleavage rate and blastocyst rate among different groups. After that we evaluated the quality of blastocysts by using ICM/TE (Inner cell mass/Trophectoderm cells) ratio via staining with propidium iodide and Hoechest333258, and analyzed the level of genome methylation and histone acetylation by immunofluorescence.

比较各组受精卵的卵裂率和囊胚发育率；并应用碘化丙啶和Hoechest333258对囊胚进行染色，利用ICM/TE值评价各组胚胎体外发育的质量；同时将囊胚进行免疫荧光染色，观察其基因组甲基化和组蛋白乙酰化的水平。

Some stimulators, including viruses, tumor cells and hot shock, could promote the expression of NKG2 receptors and their ligands via activating certain transcription factors which are capable of up-regulating NKG2 promoters' activity. Meanwhile, epigenetic mechanisms including DNA methylation and histone posttranslational modifications are also critical to expression of NKG2 receptors and their ligands and may control the clonally distribution of some NK cell receptors.

病毒、肿瘤和热休克等刺激可以通过激活相应的转录调节因子，提高启动子活性而上调NKG2家族受体及其配体的表达，而启动子区DNA的甲基化状态、组蛋白的乙酰化和甲基化等表观遗传调控，在NK细胞受体及其配体的表达方面亦起重要作用，并决定NK细胞受体的克隆性分布。

By using competitive adsorption of activated carbom to remove unfavorable influence of carbon in carbonaceous gold concentrate on leaching process, the leaching rate of gold concentrate can be improved to 88% as compared with 10%by direct cyanidation.

本文论述了利用活性炭竞争吸附作用，消除含炭金精矿中炭在浸出过程中的影响，使金精矿的浸出率可由直接氰化的10％提高到88％。

The only thing you're ever gonna be king of is King of the Stupids!

你只配做傻瓜的国王！