On the basis, the local structural modification of the block is completed.
在此基础上，对缸体进行了局部结构修改。
Biotransformation is going to provide a new research direction for structural modification of sinomenine.
生物转化为青藤碱的结构改造提供了研究方向。
The additive modification is simpler, wider in applicability and more perspective than the structural modification.
指出改性剂改性比结构改性工艺简单、适用面广，是一个颇具前景的研究方向。
Aim To search for new compounds for the treatment of cardiovascular diseases by structural modification of cyclovirobuxine D.
目的通过对植物活性单体环维黄杨星D的结构改造 ，以寻求疗效更好、治疗安全范围更宽的心血管药物。
In this paper, their structural modification and structure-activity relationship are reviewed in order to give some clues for the further research.
本文综述了近年来该类药物结构修饰和构效关系的研究进展，为进一步进行新药研究提供线索。
Objective: To investigate the derivants of bergenin through structural modification and their activity of anti-tumor cells.
目的：探讨岩白菜素经结构修饰得到的衍生物以及它们的抗肿瘤细胞的活性。
The result of this study has a great significance to further understanding of madecassoside in the metabolism and the structural modification of madecassoside.
本研究结果对于进一步了解羟基积雪草苷在人体中的代谢和结构修饰具有重要的意义。
By this research, 23 triterpenoid derivants have been prepared by structural modification of ursolic acid and oleanolic acid, and most of them are new compounds.
通过该课题的实施，对熊果酸及齐墩果酸结构进行修饰和改造，共计获得了23种三萜类衍生物，其中大多为新化合物。
Abstract: the use of biological transformation of structural modification of natural drugs is one of the effective ways for screening new natural active compounds.
摘要：利用生物转化对天然药物进行结构修饰，是筛选新的天然活性化合物的有效途径之一。
Pentacyclic triterpenes are among the most important bioactive compounds and biotransformation is a very useful tool to carry out the structural modification on these compounds.
五环三萜是一类重要的天然产物，研究发现生物转化能够对该类化合物进行多种类型的结构修饰。
The studies on the structural modification and additives of ethyl cellulose (EC) membrane have been carried out in series for improving the gas permeation behaviour of membranes.
为提高乙基纤维素（EC）膜的透气性，本工作系统研究了结构改性和添加物的作用。
In the paper, the structural modification and structure-activity relationship of these two types of antibacterials are reviewed in order to give some references for the further research.
本文综述了这两类抗菌剂近年来结构修饰及构效关系的研究进展，为进一步的新药研究提供参考。
In recent years, domestic and foreign scholars have made researches on its extraction and separation methods, analytical methods, pharmacological effects, structural modification, and so on.
近年来，国内外学者对其提取分离方法、分析方法、药理作用、结构修饰等方面进行了研究。
With the structural modification of quartz sand filter in Daqing oil field, and using the suspended sludge filtration in treating oilfield wastewater, the good experimental results are obtained.
对大庆油田石英砂过滤器结构进行改造，并应用悬浮污泥过滤技术对油田污水进行了深度处理，试验取得了良好的处理效果。
To improve fluorescein's performance, a wide variety of fluorescein derivatives have been prepared by structural modification and used as fluorescent reagents favorable for detecting the organism.
为了改善荧光素的性能，通过对其结构进行修饰，开发研制出许多的荧光素衍生物，这些衍生物作为荧光试剂，更有利于对生物体进行检测。
Structural modification method and mechanism for epoxy resin are discussed and their application to heavy duty coatings is described.
本文探讨了对环氧树脂进行结构改性的方法与机理，并介绍其在防腐涂料中的应用。
These researches supplied the basis for the further work of Structure-activity relationships and Structural modification of eugenol's derivatives.
这些研究结果，为进一步研究丁香酚类化合物的构效关系和结构改造提供了依据。
These researches supplied the basis for the further work of Structure-activity relationships and Structural modification of eugenol's derivatives.
这些研究结果，为进一步研究丁香酚类化合物的构效关系和结构改造提供了依据。
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