乙酰脲

The role of arginine to assist protein refolding was similar to that of acetone, both of them were able to combine with the denature lysozyme and improve the refolding yield.

结果表明，与自发复性收率(40%)相比，复性液中添加精氨酸、甘油、乙酰胺、丙酮、硫脲、海藻糖和甜菜碱均能有效提高变性溶菌酶的复性收率。

Leaves of field wheat in florescence were sprayed and the cutting leaves of hollyhock were soaked at base with aqueous solutions of N-(1-Naphthaleneacetyl)-N′-(4-Aminopyryl) Thiourea of 10, 20, 50 mg .

以新合成的N-(1-萘乙酰基)-N′-(4-氨替吡啉基)硫脲配制成不同浓度(10、20、50 mg 。 L-1)的水溶液，对大田扬花期小麦进行叶面喷洒和蜀葵叶片扦插基部的浸泡处理，并在分别含有0.1 mg 。

A cyanide-free silver electroplating process with 5,5-dimethyl hydantoin as coordination agent is studied.

研究了5，5-二甲基乙内酰脲为配位剂的无氰镀银工艺。

The synthetic method for hydantoin by using improved Bucherer Berg's synthesis was re-ported.

报告了利用改进的Bucherer－Berg＇s工艺进行乙内酰脲的合成方法。

In this work, a series of antimicrobial agents containing the hydantoin structure such as AM, BM and AM-AN, were synthesized by changing the reaction conditions such as temperature, time, concentration of initiator and so on, and the N-halamine structure which possessed the ability of durable antimicrobial, was transformed through a chlorination process.

本文设计合成了一系列含乙内酰脲结构的再生抗菌剂。通过改变合成反应的条件，如反应温度、反应时间、引发剂浓度、加料方式等，制备了再生型抗菌剂前体AM、BM和AM-AN共聚物。

Past the kitchen, toilet use antibacterial, cleaning agents, basically trimer cyanuric chloride Department of halogenated compounds, the main components and to hydantoin as an active ingredient of two products.

以往厨房、厕所使用的抗菌、洗净剂，基本上是以氯化三聚异氰系化合物为主成分和以卤化乙内酰脲为有效成分的两种制品。

Structural comparison has revealed insights into the molecular basis of the differential thermostability of D-hydantoinases.

不同来源的D—乙内酰脲酶的热稳定性不同，三维结构的比较为热稳定性的变化提供了理论依据。

Analytical results showed that the upper clear liquid of pyrolysis oils was mainly consisted of water-soluble substances,such as phenol,cresol,xylenol,sugars,hydantoins,morpholines,pyranones and pyridine derivatives compounds,etc.,while the lower sediment was mainly insoluble or hardly water-soluble substances,such as the big substituent phenolics(the number of substituent carbon atoms of which is greater than or equal to 2),aryl phosphate esters,fatty acid esters and nitrile compounds,and so on.

研究表明，热解油上层清液主要是一些较易溶于水的物质，如苯酚、甲酚、二甲酚、糖类、乙内酰脲类、吗啉类、吡喃酮类和吡啶类化合物等；而下层沉淀则主要为不溶或难溶于水的物质，如大取代基酚类（取代基碳原子数≥2）、磷酸三芳基酯类、脂肪酸酯类和腈类化合物等。

Bromocyclobutanecarboxylic acid is prepared starting from diethyl malonate and trimethylene.

同时还采用5-环丁基乙内酰脲开环法制备了1-氨基环丁甲酸。

The order of geneswithin the operon and the growth temperature of the strains turned out to be important for bothenzyme and D-amino acid production.

重组的菌株能够稳定的表达两种酶，并且能够有效的转化乙内酰脲到相应的 D 型氨基酸。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。