• 方法利用高速逆流色谱技术通过寻找合适两相溶剂体系工艺参数研究讨论石杉碱甲分离制备方法

    METHODS Using the technology of HSCCC, research and discuss a new preparative method of Huperzine A by searching a suitable two-phase solvent system and relative technical parameters.

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  • 结果滤法有效地石杉固体脂质纳米粒与游离石杉碱分离回收率为98.09%,测得3样品平均封率为57.63%。

    Results Free drugs could be effectively separated from the Hup ASLN by ultrafiltration. The average entrapment efficiency of three batches of Hup ASLN was 57.63%, with the recovery of 98.09%.

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  • 本文土壤采集分离方法进行了探讨

    This paper studied the method of collecting and separating oribatid mite in soil.

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  • 介绍了溶剂析出法分离间苯酸二磺酸生产废水硫酸钠间苯二酸二酯磺酸钠的工艺

    A new process using solvent for separating sodium sulfate and dimethyl isophthalate sodium sulfonate from wastewater of dimethyl isophthalate sodium sulfonate production is introduced.

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  • 这些结论表明采用加盐萃取对醋酸进行分离十分有利

    These conclusions indicated that saline extraction was very helpful for separation of methanol and methyl acetate.

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  • 色谱进一步分离制备高纯度冬素。

    Oridonin was purified by the further separation of column chromatography.

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  • 大孔树脂用于陈皮基黄酮类化合物分离纯化

    The results proved that macroporous resin can be used for separation and purification of polymethoxylated flavones from orange peel.

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  • 真菌病手分离松脱

    The separation or loosening of a fingernail or toenail from its nail bed.

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  • 适用轻工化工化肥食品制药等行业特别适用于分离

    They are suitable for light industry, chemical industry industry, fertilizer, food and pharmacy industries, especially the separation of methyose.

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  • 元宝枫制成混合脂肪酸,再应用尿素包合法对其中的神经分离主要影响因素进行了正交试验研究。

    The fatty acid methyl esters was prepared from Acer Truncatum buge oil, and the main influence factors of separating nervonic acid methyl ester by urea-inclusion method were analysed.

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  • 发明公开了一种荷叶分离制备2-羟基-1-氧基阿朴啡方法

    The invention discloses a method for separating and preparing 2-hydroxyl-1-methoxy aporphine from lotus leaves.

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  • 结论方法准确快速简便,可不经分离直接测定复方盐酸片中盐酸二双胍含量

    CONCLUSION: the method is accurate, fast, convenient, and which can be used to determine the contents of metformin hydrochloride in compound metformin hydrochloride tablets directly without isolation.

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  • 酯化的大豆油脱臭出物为原料,从中分离提纯天然生育酚。

    The purification of natural tocopherols from methyl esterified soybean oil deodorizer distillate was discussed.

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  • 乙醚溶液制得聚苯乙烯丙烯酸反应不能分离出聚基丙烯酸酯及它的接共聚物。

    Neither polymethylmethacrylate nor polymethylmethacrylate-grafted copolymer could be isolated by the reaction of polystyrene methylene lithium prepared in ether solution with methyl methacrylate.

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  • 混合脂肪酸为原料,采用尿素包合法(脲包法)分离不饱和脂肪酸酯。

    The unsaturated fatty acid methyl esters (FAMEs) were separated from the fatty acid methyl esters mixture using urea adduct method.

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  • 结论我院患者血液分离的耐西林金黄色葡萄球菌菌株分子水平上亲缘关系。

    Conclusion MRSA strains isolated from patients in our hospital have a rather close consanguinity at molecular level.

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  • 柠檬苦素采用氯仿萃取取样硅胶G薄层分离——二氨基苯作显色剂比测定

    The limonin sample is got by extraction with chloroform and is separated by a thin-layer chromatography of silica-gel G, and then is determined by colorimetric metho…

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  • 综述碳酸酯-醇二元共沸物汽液平衡分离方法最新研究进展。

    Vapor-liquid equilibria and separation of methanol-dimethyl carbonate azeotrope are(reviewed) in this paper.

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  • 使用中空纤维处理羟丙纤维素眼液,离心分离羟丙纤维素铵,建立了HPLC测定其中的苯扎溴铵含量。

    Benzalkonium bromide was separated from the hypromellose eye drops with hollow fiber under the effect of centrifugal force and its determination was studied by an HPLC method.

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  • 通过苯酚碳酸交换反应合成了碳酸苯酯,采用减压精馏对其进行了分离提纯,得到纯度>99.5%的碳酸

    Methyl phenyl carbonate(MPC) was prepared by transesterification of dimethyl carbonate(DMC) with phenol and the product with a purity exceeding 99.5% was obtained by vacuum distillation.

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  • 结果分离鉴定了2个二化合物,其结构分别2 氧基- 3, 4 -亚氧基-二苯I), 4 羟基-2, 6 -二氧基-二苯酮(II)。

    Results A new benzophenone was isolated and identified as 2-methoxy-3,4-methylenedioxy-benzophenone (I), along with a known compound 4-hydroxy-2,6-dimethoxy-benzophenone (II).

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  • 乙酸水解体系催化剂热力学动力学研究现状进行了评述分析了传统的水解分离工艺并提出了可行工艺

    The studies on the catalysts, the thermodynamics and kinetics of methyl acetate hydrolysis were reviewed. The ordinary hydrolysis separation technology was analyzed and a new process was proposed.

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  • 本文提出高效液相色谱分离测定小麦粉增白剂过氧化苯方法

    A new method using high validity liquid chromatogram to separate and determine the concentration of benzoyl peroxidation in wheat flour was proposed.

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  • 方法用索氏提取法对脂肪进行提取,采用不同化处理后,采用相色谱-质谱联用技术分离鉴定组分和含量。

    MethodsThe fatty acids were extracted by Soxlet extraction, etherified by different methods and its components were analyzed by GC/MS.

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  • 目的建立冬凌草提取分离工艺

    OBJECTIVE To establish a new method for the extraction and separation of oridonin.

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  • 结论黄芩我国分离型流感病毒神经氨酸酶具有抑制活性的作用。

    Conclusion Baicalin had inhibition effect on the strain of influenza virus isolated in China.

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  • 实用新型可以废气中的有机物尤其是二二丁酯等分离回收降低成本减少了污染

    The organic waste gas separator can separate and reclaim organic matters such as dimethyl, dibutyl ester and the like in waste gas, lowers production cost, and reduces pollution.

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  • 气相氧化羰基化法合成碳酸酯(DMC)产物分离进行了研究。

    Separation methods for products from synthesis of dimethyl-carbonate (DMC) by methanol gaseous oxidative carbonylation were investigated.

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  • Kauppinen发现胺四环素一种四环素分离得到抗生素,它能阻止培养细胞炎症反应凋亡

    Kauppinen found that minocycline, an antibiotic derived from tetracycline, prevents inflammation and apoptosis in cultured brain cells.

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  • Kauppinen发现胺四环素一种四环素分离得到抗生素,它能阻止培养细胞炎症反应凋亡

    Kauppinen found that minocycline, an antibiotic derived from tetracycline, prevents inflammation and apoptosis in cultured brain cells.

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