脲

objectiveto evaluate short term systemic toxicity of cp bleaching agents with different carriers, and to compare the result with commercial bleaching gels of the same kinds.methodsmaking 20% bleaching water solution by using 10% cp with carbopol or pvp as carriers and 10% opalescence.

目的：评价不同增稠载体过氧化脲（carbamide peroxide，cp）漂白剂的短期全身毒性，并与同类商品漂白剂进行比较。

MIRANDA HT grease is lead-free and based on HVI paraffin mineral oil and special poly urea soap.

万灵达高温润滑脂是由高黏度指数矿物油和聚脲基皂稠化制成，不含铅。

It was interesting to find that the melt flow rate curve went parallel to the impact strength with the increasing of CaCO_3 content.

异氰酸酯衍生的氨基甲酸酯、脲基等基团可以通过配位、氢键等形式与CaCO3表面发生作用。

The results obtained by the correlation, path and principal component analysis showed that soil urease and alkaline phosphatase activities could be as a comprehensive index of soil fertility, and their enzyme activities are affected by soil chemical properties and other enzymes.

结果表明，土壤脲酶和堿性磷酸酶活性可以作为土壤肥力的指标，且酶活性大小受到土壤化学性质和其它酶活性影响。

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。

The reaction between periodate and thiourea in acidic medium has been investigated in a batch.

在酸性介质中，高碘酸盐氧化硫脲的非线性反应呈现多种不同的化学计量方程式。

The impact of different degrees of degradation on activities of urease and peroxidase varied.

不同退化程度对脲酶和过氧化物酶活性的影响没有明显的规律性。

But it is still not definition about the pathogenicity of UU. We shoud diagnose stringently the infection of UU. It is necessary that a simple, useful and reliable method of UU grouping be established to avoid excessive therapy and increase of persister day by day.

但对UU致病性仍未最终定性，应严格UU感染的诊断，建立一个简单、实用、可靠的解脲支原体分型的临床检测方法，避免过度治疗和耐药株的日益增多。

However, Zn- phenanthrene and Cd- phenanthrene were synergistic.

Zn和菲，Cd和菲之间的交互作用，无论是对脲酶还是脱氢酶均表现为协同作用。

These results suggested that proper groups at 5-position on phenyl ring of sulfonylurea molecule might possess high herbicidal activity.

结果表明，在磺酰脲类分子苯环5位上进行结构改造，有可能得到高活性的化合物。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。