乙脲

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。

Technical characteristics and existing problems of cyanide-free silver plating technology were summarized through the analysis of cyanide-free silver plating systems of thiosulfate,succinimide,iodide,hydantoin,sulfite and others.

通过对硫代硫酸盐、丁二酰亚胺、碘化物、乙内酰脲、亚硫酸盐以及其它无氰镀银体系的分析，总结了当前无氰镀银工艺的技术特点及存在的问题，并阐述了无氰镀银技术的发展历程和研究现状。

The most commonly used drugs Bleomycin, mitomycin C, Adriamycin, 5 - 5-fluorouracil (5 - Fu), methotrexate, cyclohexyl - nitrosourea, imipramine hydrazone, Vindesine, etoposide (VP-16), chlorine and ammonia-platinum, a single chemotherapy drug remission rate in the 15% to 20% remission for 1 to 4 months.

最常用的药物有博来霉素、丝裂霉素C、阿霉素、5-氟尿嘧啶（5-Fu）、甲氨喋呤、环己亚硝脲、丙咪腙、长春花碱酰胺、鬼臼乙叉甙（VP-16），以及顺氯氨铂，单一药物化疗的缓解率在15％～20％，缓解期为1～4个月。

We establish a microtechnique developed from cytochrome C spreading methods allowing the detection of minimal amounts of DNA through a calibrated composition of buffer、denaturing agents and cytochrome C in an extremely small volume of spreading mixture.

将变性剂脲、乙二醛、甲酰胺引入展开过程，我们在国内首次建立了可检测1×10〓--2×10〓ug以下量DNA样本的微量展层技术，能较好地展开dsDNA及ssDNA分子，DNA形态及长度与经典技术所制样本相似。

Fourthly, plasticized polymer electrolytes based on PEUU and poly were prepared by impregnating PEUU/PECH blend films with lithium salt/PC solution.

三。以带有醚氧链段的线性高分子—聚乙二醇型聚醚氨酯脲为离子导电相制备两相高分子电解质。

Compositions: deionized water, roseleaf, rose essential oil, aloe extract, allantoin, sodium cocoyl isethionate, bi-imidazolidinyl urea

成份： 去离子水、玫瑰花瓣、玫瑰精油、芦荟提取物、尿囊素、椰油酰羟乙磺酸酯钠、双咪唑烷基脲。

Compositions: deionized water, roseleaf, rose essential oil, rose extract, coco-glucoside, CAB-35, lauryl alcohol polyether ammonium sulfate, DMDM glycolylurea

成份： 去离子水、玫瑰花瓣、玫瑰精油、玫瑰花提取物，椰油基葡糖苷，椰油酰胺丙基甜菜碱，月桂醇聚醚硫酸铵， DMDM 乙内酰脲。

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。

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。