共查询到15条相似文献,搜索用时 78 毫秒
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化学絮凝法在工业有机污水处理中的应用 总被引:7,自引:1,他引:6
文章对化学絮凝法处理工业有机污水的理论基础、科研和应用、改进途径和方法等作了介绍和综述,从而阐明了该法具有基建投资省、适应性强,操作管理简单等优点。 相似文献
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毫无疑问,分子分类学和化学分类学在农药创制中起着重要的作用,但是这种途径如何获得成功?其挑战性工作又是什么呢?在过去10年中,不少研究机构和公司投入了大量的精力和财力研究开发转基因植物和合成适于高通量筛选的组合化学分子 相似文献
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简要介绍了环糊精化学的产生、发展及应用,重点介绍了:(1)环糊精衍生物的自组装、包合及应用;(2)新型环糊精超分子聚集体的形成及应用;(3)环糊精的包合作用在医药学研究中的应用。并对环糊精化学的发展进行了展望。 相似文献
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Suporn Charumanee Aurawan Titwan Jakkapan Sirithunyalug Petra Weiss‐Greiler Peter Wolschann Helmut Viernstein Siriporn Okonogi 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2006,81(4):523-529
Molecular encapsulation on a molecular basis can be performed by cyclodextrins. The inclusion of organic molecules into the interior changes the properties of these molecules, which may be used for a broad variety of applications. The affinity of guest molecules for the cavities of various cyclodextrins depends on the stereochemistry and on the interaction forces of the molecules involved. Calculations of the thermodynamic parameters show that the reaction entropy is highly important for the inclusion reaction. Completely different reaction mechanisms are observed for various types of cyclodextrins as some of these reactions show enthalpy–entropy compensation. Others are supported by the reaction entropy or are even entropically controlled. Protonation and deprotonation reactions contribute significantly to the inclusion reaction, as first of all the solubility of the compounds in water is strongly influenced by the acidity of the solution, and, moreover, all tautomeric forms of the compounds show different affinities to various cyclodextrins. Copyright © 2006 Society of Chemical Industry 相似文献
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综述了近几年来环糊精与药物分子形成包合物在医药应用上的新进展,即①超声波法合成药用环糊精包合物;②新型药用环糊精包合物的制备;③环糊精及其衍生物对药物的增溶作用。 相似文献
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Michael Kolb Brigitte Zentgraf Peer Arvidsson Bo Mattiasson Bengt Danielsson 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1996,66(1):15-18
A thermostable α-amylase catalyzed the exothermal hydrolysis of cyclodextrins. It was immobilized covalently via a spacer on controlled pore glass (CPG-10) or Silicagel. The temperature signal caused by the reaction heat of the cyclodextrin hydrolysis was determined in a one column calorimetric system (enzyme thermistor). It was correlated to the cyclodextrin concentration and depended on the type of enzyme carrier and kind of cyclodextrin hydrolyzed. The proposed technique offers a direct route to the determination of α-amylase activity, and the results are of importance for analysis of cyclodextrin concentration. 相似文献
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简要介绍了环糊精化学的产生、发展、应用及结构特征;重点讨论了:(1)超分子大环主体化合物环糊精的自组装及应用;(2)环糊精自组装在医药学方面的应用;(3)环糊精模拟酶及其选择性识别作用。并对环糊精化学的发展进行了展望。 相似文献
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Supramolecular chemistry of cyclodextrins in enzyme technology 总被引:3,自引:0,他引:3