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乙酯基

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Coverer: Seamless sheath of ether-based urethane resistant to cathodic, hydraulic and other environmental conditions.

包层:无缝铠装乙醚基氨基甲酸乙酯。耐阴极、液压和其它环境条件。

ObjectiveTo explore the methods of prevention and cure of sun-induced aging dermis, and clarify the mechanism of Ginsenoside Rb1 on sun-induced aging dermis, with the study of expression of matrix metallo preteinases in sun-induced aging dermis fibroblasts' cytoplast, which are cultured in vitro, under the effect of Ginsenoside Rb1 and arotinoid ethyl ester.

目的通过人参皂苷Rb1与芳维甲酸乙酯对皮肤真皮体外培养光老化成纤维细胞胞质内基质金属蛋白酶表达的影响,阐明人参皂苷Rb1对光老化的防治机理,探索光老化的防治手段。

The properties of this surfactant were examined by numbers, including surface tension, foaming power, wetting power, emulsification, detergence, dispersion ability, stability in hard water and thermal stability.

对产物双十二烷基乙氧基二硫酸酯钠进行系统的性能研究,包括表面张力、泡沫力、润湿力、乳化力、去污力、分散力、在硬水中的稳定性和热稳定性等。

At the same concentration, extracts show the highest scavenging rate on the four different free radicals extracted by ethyl ether, acetone, ethyl ether and ethyl acetate, respectively.

在相同的浓度下,对自由基的清除作用最大的分别为乙醚、丙酮、乙醚和乙酸乙酯提取物。

Our company treasures technical innovation and development of new products. On the basis of stable food grade,pharmagrade glycine,we have also developed compound amino acid,4pyridone,hydantoin and Nbenzylglycine ethyl ester etc.

本公司十分注重技术创新和新产品开发,在稳定食品级,医药级甘氨酸等老产品生产的基础上,又开发了蚕蛹复合氨基酸,4羟基吡啶,海因,N苄基甘氨酸乙酯等产品。

Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate)/clay hydrogel was copolymerized with NIPA and HEMA cross-linked by clay to form a new kind of nanocomposite hydrogel P(NIPA-co-HEMA)/clay was obtained.

以无机粘土为交联剂制备了具有温度、pH双重敏感性的聚(N-异丙基丙烯酰胺-co-甲基丙烯酸-β-羟乙酯)/粘土纳米复合水凝胶P(NIPA-co-HEMA/clay,并用红外和X衍射对其结构和形态进行了表征。

With the occurrence of H2/Pd-C and ethyl formic ester,the reduction of the nitro group and the formylation of the amino group could be finished in one step.

但是在甲酸乙酯存在下,用H2/Pd-C对Ⅶ的硝基进行还原,得到的Ⅷ中的氨基可当即被甲酰化,使由Ⅶ到Ⅳ的两步反应一步完成。

ABSTRACT:OBJECTIVETo synthesis the 4alkyl 1[2(pyridin2yl ethoxy)ethyl] piperazine and study its effects for ability of memory in mice.

[目的]合成4烷基1[2(2吡啶乙氧基)乙基]哌嗪,探讨减少了酯结构的合成物对小鼠记忆力的影响。

The results also indicated a low production of acetic acid, acetoin and ethyl acetate, and high amounts of amyl alcohols in all of the ciders.

结果在全部萍果汁也表明了乙酸、乙醛和乙酸乙酯旳低产量和大量产生旳戊基乙醇。

Ultrasound, Expansive Graphite, Cinnamic Acid, Ethyl Alkylidene a- Cyanoacetate, Montmorillonite, Pinacol

超声波,膨胀石墨,肉桂酸,烷叉基氰乙酸乙酯,蒙脱土,片呐醇

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。