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线粒体基因组已被广泛应用于后生动物分子系统发育和群体遗传的研究。文昌鱼(Amphioxus)作为研究脊椎动物起源和进化的模式动物,在脊椎动物起源和进化研究中占据极为重要的位置。作者综合分析文昌鱼2科7个种的51条线粒体基因组全序列,全面揭示了文昌鱼线粒体基因组的基本特征。文昌鱼线粒体基因组均编码后生动物标准的37个基因...  相似文献   
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Underwater Explosion Treatment of Marine Soft Foundation   总被引:11,自引:0,他引:11  
The consolidation of soft foundation is a problem that commonly appears in harbor construction engineering on muddy coast. Introduced in this paper is the experimental study on underwater explosion treatment of soft foundation, including the regulations of explosion hollow development and medium movement, the law of similarity of densification and settlement of filled stone mass by shock wave pressure and explosion energy and their construction technologies, etc. A number of projects have been completed by applying this new technique, and the technique itself has been proved practicable.  相似文献   
3.
利用煤矸石合成4A分子筛初探   总被引:4,自引:0,他引:4  
顾炳伟 《江苏地质》1997,21(2):90-92
利用煤矸石经煅烧后在强碱作用下制备成4A分子筛,这一实验室成果对综合利用煤矸石、生产适于洗涤剂配方用的合成沸石分子筛,具有积极的意义。  相似文献   
4.
Explosion for the treatment of underwater soft foundation is a technique newly developed in China. This paper describes the application of the method of explosion to underwater soft foundation treatment of the Great-West Dyke, Lianyungang Port, including the technical characteristics and the effect, selection of explosion parameters, workmanship of construction, requirements of quality and inspection, and the like.  相似文献   
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