According to the advanced directions of the bionanotechnology , four parts of investigations has been performed in this thesis . in part one , the synthesis methods and mechanism of core - shell nanoparticles have been investigated . great breakthrough in the synthesis theory and techniques of core - shell nanoparticles has been obtained 本论文瞄准生物纳米技术发展的前沿方向，以核壳纳米颗粒制备、核壳纳米颗粒性能分析、核壳纳米颗粒应用为主线，开展了四方面的研究工作：第一，开展了核壳纳米颗粒的制备方法以及机理的研究，取得了核壳纳米颗粒制备理论和技术的突破。
In an attempt to produce useful suggestions to optimize our corporate finance models , this text made comparative studies through adoption of the international community recognized three typical corporate finance models , namely the united states model , japanese model , the german model . this text is composed by three components . the first part shows a clear pattern of the three frameworks through construing the corporate financing model oft the united states , japan and germany . 本文通过对国际社会公认的三种典型的企业融资模式,即美国的证券市场主导型模式、日本的主银行融资模式、德国的全能银行融资模式进行历史背景、在经济发展中的作用、融资次序和融资机制等四方面的比较,对我国企业融资模式的选择及具体对策进行了有益的思考。
Based on an systematic explanation of intensive construction land use and its evaluation , this paper establishes a set of evaluation index system including the construction land input intensity , the intensity , efficiency and structure of its use , and then introduces the method of comprehensive integration granting weight to set the contestant indexes weights 摘要在对建设用地集约利用及其评价进行系统学解释的基础上，建立一套包括建设用地投入强度、使用强度、利用效率和利用结构四方面的评价指标体系，引入综合集成赋权法以确定参评指标权重。
