查询词典 urea

In order to find biologically active urea compounds,seven new N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N'- urea derivatives were synthesized by the reaction of 2-amino-5-(3-pyridyl)-1,3,4-thiadiazole with aroylazides,which were prepared starting from carboxylic acids,ethyl chloroformate and sodium azide by one-pot procedure.

为了寻找高生物活性的脲类化合物，通过2-氨基-5-(3-吡啶基)-1，3，4-噻二唑与酰基叠氮化物反应，设计合成了7个新的N-[5-(3-吡啶基)-1，3，4-噻二唑-2-基]-N'-取代苯基脲，其中芳酰基叠氮化物是以芳酸、氯甲酸乙酯、叠氮化钠为起始原料采用&一锅法&所制得。

A spectrophotometry method, which based on the reaction of diacetyl monoxime and urea in acidic solution, was established for determination urea in bovine milk.

根据二乙酰一肟与在酸性条件下尿素的反应，建立了一种分光光度法快速测定牛奶中尿素含量的方法，该方法可以定性和定量测定牛奶中尿素含量。

Urea and amide were used as guest molecule in the chapter 2. Dicarboxylate 36 shows three anodic waves and two cathodic waves in CV. The cathodic current decreased when urea and amide were added.

第二部分则是将尿素与醯胺基团当成被侦测的客分子，我们合成了具双酸根的三苯胺衍生物盐类36，发现尿素与醯胺基团加入后盐类36的循环伏安谱之还原电流减少可以用来侦测尿素与醯胺基团。

Its main products include:ZOLEDRONIC ACID, ADAPALENE, SIMDAX, VORICONAZOLE, J ACID UREA, J ACID UREA SODIUM SALT, 1,7-CLEVE'S ACID, 1,6-CLEVE'S ACID, 1,5- DINAPHTHYL ISOCYANATE, 5- INROINDOLE,----2-METHOXYIMINO-2-（FURYL-2-YL）ACETIC ACID AMMONIUM SALTand etc.

部分产品远销美国、德国、英国、印度、日本等十几个国家和地区，主要产品有：唑来磷酸、阿达帕林、左西孟旦、伏立康唑、猩红酸、猩红酸钠盐、双介酸、1，7克力夫酸1，6克力夫酸、1，5-萘二异氰酸酯、5-硝基吲哚、甲氧亚胺基呋喃乙酸铵等。

The test method is to fetch the urea of the same quality and coated material of different quality first, make coating material parcel evenly the urea particle s surface, grant them into the soil, eluviate with the distilled water every 24 hours, collect the eluviationing solution, titrate the eluviationing solution with distillation titrimetric method, that is, add alkali distillation, make the ammonia release out, absorb with boric acid solution, then titrate it with standard acid.

试验方法是称取相同质量的尿素和不同质量的包膜材料，将包膜材料均匀地包裹在尿素颗粒的表面，将包裹后的包膜肥料施入模拟试验的土壤中，每隔24个小时用蒸馏水淋溶，收集淋溶液，用蒸馏滴定法滴定淋溶液，即加碱蒸馏，使氨释放出来，用硼酸溶液吸收，而后用标准酸滴定之。

Urea could improve shear strength and water resistance of 7S conglycinin and 11S glycinin, and 11S glycinin had a maximum value at 1mol/L urea.

采用各种浓度的尿素对7S和11S球蛋白进行变性，其中1mol/L尿素变性提高胶粘特性的效果最好。

This investigation characterized the wettability and adhesive properties of the major soy protein components conglycinin (7S)and glycinin( 11S)after urea modification and found out the secondary structures playing key roles on the adhesive strength of 7S and 11S proteins after modifying with urea.

随着人们对环境保护意识的增加和地球有限资源的缺乏，大豆蛋白在胶粘剂工业中的应用也越来越显示出强大的吸引力，鉴于前人的研究成果，文章研究了大豆7S和11S球蛋白经过尿素变性后在松木、樱桃木和胡桃木上的粘接强度和湿润能力。

This study was based on the soy protein isolates as raw materials. Chemical modification( acetylation,succinylation ,phosphorylation and urea modification) of SPI were used to improve adhesive strength and water resistance of SPI-based plywood adhesives. Then two modified ways combined were applied to SPI and their adhesive properties were studied. This research also characterized the thermal and adhesive properties of two major soy protein components 7S conglycinin and 11S glycinin after urea modification. Finally, the mechanism of improving SPI's adhesive properties was preliminarily discussed.

本文是以大豆分离蛋白为原料，进行SPI的化学修饰以提高其胶粘特性；采用了磷酸化试剂三聚磷酸钠、乙酰化试剂乙酸酐、琥珀酰化试剂琥珀酸酐和有机溶剂尿素修饰和变性SPI，研究修饰和变性后的SPI作为木材胶粘剂的胶粘性与耐水性，同时研究了两种方法复合修饰SPI对其粘度、胶粘强度和耐水性的影响；然后以SPI为原料，进行7S和11S球蛋白的提取以及胶粘特性的研究，对SPI起胶粘特性的机理进行了初步探讨。

The enthalpy of 7S and 11S with 5mol/L urea modification was zero. Finally, the 11S glycinin was modified by 1mol/L urea and then phosphorylated to various degrees by varying solutions of STP(0～10%), but this could not improve its adhesive properties.

最后，采用尿素变性和磷酸化修饰两种方法复合修饰11S球蛋白，从实验结果发现这两种方法复合并不能够提高11S球蛋白的胶粘特性。

Water, C12-20 acid PEG-8 ester, hydrogenated polysobutene, petrolatum, dicaprylyl maleate, hydrogenated vegetable oil, propylene glycol, acetylated lancolin, glycoprrotiens,panax ginseng root extract,equisetum arvense extract, carbomer, butyrospermum parkill fruit, potassium cetyl phosphate, triethanolamine, hypericum perforatum extract, malva sylvestris extract, methylparaben, glycerin, urea, saccharide hydrolysate, magnesium aspartate, glycine, alanine, creatine, propylparaben, ethlparaben, imidazolidinyl urea, polyperfluoromethylisopropyl ether, fragrance

水，C12-20 酸 PEG-8酯，氢化聚异丁烯，凡士林，马来酸二辛酯，氢化植物油，丙二醇，乙醯化羊毛脂，糖蛋白，人参根萃取，问荆萃取，卡波姆，乳木果，鲸蜡醇磷酸酯钾，三乙醇胺，金丝桃萃取，锦葵萃取，羟苯甲酯，甘油，尿素，水解糖，天门冬酸镁，甘氨酸，丙氨酸，肌酸，羟苯丙酯，羟苯乙酯，尿素醛，聚全氟甲基异丙基醚，香料

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。