A scientific and technological information portal is a domain - oriented and integrated vertical portal . its implementation involves applications of some key technologies associated with topic - specific web information discovery , distributed heterogeneous information integrated retrieval and personalized information dissemination . this thesis focuses on the technologies of topic - specific web information discovery 科技信息门户网站是一种面向学科的、集成的垂直门户网站，其实现涉及到对以特定主题的web信息发现技术、分布式异构信息资源集成检索技术以及web个性化信息分发技术为核心的多种技术的应用。
It shows that we should make further researches of screening high efficiency degradation bacterium and gene engineering bacterium , exploring metabolism kinetic and mechanism of high efficiency degradation bacterium , establishing new means combined with the other technology to convert the existing technology into practice 提出今后应该在筛选高效降解菌及基因工程菌，探明高效降解菌株的代谢动力学和代谢机理，创建新的技术手段和多种技术的联合使用，将现有的技术成果转化为实用技术等方面进行深入的研究。
