• 巴布亚新几内亚部分地区,青蒿加苯醇和二氢青蒿素加哌喹分别治疗小儿恶性疟原虫疟疾间日疟的最成本效益治疗方案。

    A+L and DHA+PQ are highly cost-effective regimens for the treatment of paediatric P. falciparum and P. vivax malaria, respectively, in parts of Papua New Guinea.

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  • 全面系统地考察了层柱稀土固体催化剂环氧乙烷化反应。

    Etherification of methanol with ethylene oxide (EO) was investigated systematically on the pillared rare earth solid acid catalyst.

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  • 方法头红石油乙酸乙酯、热水粗提取物分别进行体外抗氧化和抑菌试验

    Method the extracts of petroleum ether, ether, ethyl acetate, ethanol and hot water from the whole plant were used to determine the in vitro miti-oxidant and antibacterial activity.

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  • 结果表明黄草提取物具有一定猪油自动氧化能力,且作用强于抗坏血酸,95%石油提取物对猪油的抗氧化作用明显

    The results showed that the antioxidative activity of the extract by water was stronger than that of Vc, while the extracts by 95 % ethanol and petroleum ether had no obvious antioxidation for lard.

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  • 国产NKC-29型酸性阳离子交换树脂催化剂常压液相条件下用叔戊为原料合成乙基叔戊基

    Ethanol and tert-amyl alcohol were employed to synthesize tert-amyl ethyl ether in the liquid phase at atmospheric pressure. The strong acid cation exchange resin, NKC-29, was used as catalyst.

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  • 聚苯乙烯-二乙烯苯为基质,制备了两个系列化学键聚乙二脂肪聚合物小球固定相。

    Two series of chemical bonded polymers of polyethylene glycol and aliphatic ether based on macroporous styrene-divinyl-benzene polymer have been prepared.

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  • 汽油中的硫化物主要噻吩,占整个硫化物的70%左右,其次

    The main component of sulfide in gasoline is thiophene, it can reach about 70 % in all over the sulfide, then is mercaptan and sulfur ether.

    youdao

  • 产物异丙醇和二异丙基存在平衡分布

    There is an equilibrium distribution relationship between DIPE and isopropanol.

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  • 丁烯反应生产甲基叔丁基目前主要工业化生产方法

    The synthesis route from methanol and isobutene was the most important industrial production methods.

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  • 丁醇脱水化合成甲基叔丁基由于原料相对便宜,可以用于实验室合成可以推广工业化生产

    The synthesis route from the methanol and tert-butanol was not only used in laboratory, but also extended to industrial production.

    youdao

  • 丁醇脱水化合成甲基叔丁基由于原料相对便宜,可以用于实验室合成可以推广工业化生产

    The synthesis route from the methanol and tert-butanol was not only used in laboratory, but also extended to industrial production.

    youdao

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