乙酰胺

Comb-shaped copolymer of polycarboxylate containing carboxyl,sulfonic groups(-SO3M),polyethylene glycol(-OC2H4-) was synthesized by monomers of sodium 2-acrylamido-2-methylpropane sulphonate,acrylic acid,polyethylene glycol monoester acrylate under certain conditions.

本文通过2-丙烯酰胺-2甲基丙基磺酸钠与丙烯酸、聚乙二醇单丙烯酸酯在一定条件下发生聚合反应合成含有羧基、磺酸基(—SO3M)、聚氧乙烯链(—OC2H4—)等侧链的高性能减水剂PC。

The effect of buffer pH and applied voltage on the migration behavior, the UV signal and the separation of aesculin and aesculetin were systematically studied using capillary zone electrophoresis.

实验表明当pH在5.47-8.50范围内，不仅秦皮甲素和秦皮乙素彼此间得到分离，而且也能与中性标记物甲酰胺分离。

Then we completed the first total synthesis of-Plakoridine A using Eschenmoser couping reaction as akey step. During the synthesis we found the choice of protecting groups and the configuration of the chiralcenter of the substrate play an important role to the key Eschenmoser reaction,so we think our successwould be of guide for synthesizing other polysubstituted pyrrolidines or piperidines.

在论文的第一章中，我们先以易得的对羟基苯乙酸乙酯为原料经多步反应制得了所需的β氨基酸酯，然后利用立体选择性的Aldol缩合反应和内酰胺化反应制得了Plakoridine Alactam，随后，以Eshenmoser缩合反应为关键步骤完成了生物碱-Plakoridine A的首次不对称全合成。

Another possibility is acetazolamide, one of the first diuretics discovered.

另一中可行性药物是乙酰唑胺，这是一种利尿的发现。

In this thermodynamic study, the minimum requirements in molar fraction of the solvents (x3) on the azeotropic feed plate are: 0.20 for N,N-dimethylformamide, 0.36 for 2-ethoxyethanol, 0.40 for 1-pentanol and 0.66 for butyl propionate,.

在这个热力学研究中，共沸混合物喂料盘上各溶剂摩尔分数最小值(x3)分别是：N，N-二甲基甲酰胺：0.20；2-乙氧基乙醇：0.36；1-戊醇：0.40；丙酸丁酯：0.66。

Three methods for the preparation of 1,2,4-trizolone~5 are provided. 22 compounds are prepared. 3, 4-disubstituted 1,2,4-trizolone-5 is prepared by reacting amide with ethyl hydrazine-fornate at 110癈 for 3h in the presence of phosphorus oxychloride, following neutralization and cyclization reaction, giving to 74.5 % yields,which is 30% more than the literature value.

以三氯氧磷为缩合剂，使酰胺和肼基甲酸乙酯在110℃反应3h，经碱中和、环化反应，合成3，4-二取代-1，2，4-三唑酮-5，两步反应总产率达74.5％，与文献报道值相比，高出了30％以上，在三唑酮类衍生物的合成方法中具有很大的突破性。

The SPY protein has significant similarity to O-linked GlcNAc transferase from animals, which suggests that it may also have OGT activity.

SPY蛋白与动物中的氧连N-乙酰葡萄糖胺转移酶具有广泛的同源性，两者可能有着类似的作用机制。

The RCTs found that acetazolamide caused polyuria, paraesthesia, or both in a large proportion of people.

随机对照试验发现在大部分人群中，乙酰唑胺可导致多尿，感觉异常，或者两者皆有。

If the fluidity of the injection was bad, the appearance of the product would berough, brittle, and very difficult to satisfy the actual application. In order to improve thefluidity of the melting-body in full filling condition, different types of lubricant function were used in the paper. Though the metallic soap might enhance the fluidity of themelting-body, the dosage was huge, which might cause drops on the mechanics intensityof the product, and cause magnet to be crisp and easy to crack.

为改善在高填充时熔体的流动性，研究了不同润滑剂的作用，金属皂类可以提高熔体的流动性，但用量较大，会导致产品的力学强度的下降，磁体脆而容易开裂，乙撑双硬脂酰胺可以提高熔体的流动性，复合材料的力学强度也较高。

SiO2 aerogel was prepared by using waterglass as the Si source, formamide as the catalyst and glycol as the drying chemical controlling additive via sol-gel method and ambient pressure drying.

以水玻璃为硅源，甲酰胺为催化剂，乙二醇为干燥控制化学添加剂，采用溶胶－凝胶法常压下干燥制备了硅石气凝胶粉体。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。