• 通过沉淀转移结合制备纳米催化剂。

    Nanocatalysts were prepared by combining the method of precipitation with that of phase transfer.

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  • 转移合成丁美酮具有所用试剂易得,操作简便反应条件温和,成本较低等优点。

    CONCLUSION The phase transfer catalyst has advantages of simple starting material, convenient operations and mild reaction conditions.

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  • 本试验采用转移法通过溶剂表面活性剂筛选配伍,确定了10%虫腈水乳剂配方溴虫腈质量分数为10%;

    Through the screening and assembling of solvent, and surfactant, the optimum formulation of 10% chlorfenapy EW was developed as following by the phase transfer-method.

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  • 蛋白质印迹:蛋白质分子从电泳凝胶转移介质,然后抗体进行免疫检测技术

    Western blotting --- A technique analogous to Southern blotting, used for detection of proteins, usually by immunological methods.

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  • 苯甲醛衍生物乙酮为原料,弱碱碳酸钾为催化剂为溶剂,转移催化合成查耳酮衍生物。

    Methods Chalcone derivatives were synthesized from benzaldehyde derivatives and acetophenone by using weak alkali potassium carbonate as based catalyst in water via phase - transfer catalysis.

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  • 采用转移催化四丁基氯化铵催化剂合成了端基含磺胺嘧啶的聚乳酸,将肿瘤导向基团引入了可生物降解药物载体

    Sulfadiazine-polylactide, a tumor targeting drug carrier, was successfully synthesized by the phase transfer catalysis(PTC)with tetrabutyl ammonium chloride hydroxide as catalyst.

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  • 高效液色谱(hplc)考察疏肝理脾片主要指标成分芍药生产环节(水液、精制液、干燥品等样品)提取率、损失率、转移

    Methods To explore the influences of each links of productive process on the rate of extraction, percentage loss and the transferring rate of paeoniflorin by HPLC.

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  • 利用相转移催化合成香料2-甲基-3基吡嗪,对其反应条件进行探讨找到较佳的反应条件。

    The synthetic method of perfume 2 - methyl - 3 - methoxy pyrazine was investigated and better reaction conditions have been found.

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  • 采用相转移催化合成了1羟基2甲酸四乙酰葡萄糖进行了IR、1HNMR、MS元素分析证明了其结构。

    Tetraacetyl glucosyl ester of 1 hydroxy 2 naphthoic acid was synthesized by PTC method and confirmed by IR, 1HNMR, MS and elemental analysis.

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  • 采用高效液紫外吸收光谱测定提取黄芪总苷、 淫羊含量,通过计算转移得膏比较两种澄清工艺

    Methods Astragaloside and icariin contents in extracting solution were detected with HPLC and UV-spectrum methods. Metastasis rates and yield were calculated and two techniques were compared.

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  • 相转移催化环烷基化反应适合采用无溶剂进行反应过程中的溶剂效应进行分析后选择甲苯作为溶剂和带水剂

    The reaction was not suitable conducted under solvent-free condition, water formed during the reaction was removed by azeotropic distillation with toluene throughout the reaction.

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  • 相转移催化环烷基化反应适合采用无溶剂进行反应过程中的溶剂效应进行分析后选择甲苯作为溶剂和带水剂

    The reaction was not suitable conducted under solvent-free condition, water formed during the reaction was removed by azeotropic distillation with toluene throughout the reaction.

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