An ecological zonation of phytoplankton was determined from its normalized spectral absorption shape (aphn) during the summers of 2001-02-03 off the west coast
中国画研究院坐落在北京市西直门外三环路旁。该工程的综合厅采用玻璃屋面加遮阳结构,为钢屋架,四面坡型,网格式构造(图1)。大梁与槽钢圈梁刚接作主干,212件中梁、小梁与人梁、圈
This paper studies and analyzes tall buildings with shell and flat roof responses designed for gravity and earthquake loads in different zones having different
<正> 浇筑整体钢筋混凝土壳体屋盖是昂贵的,近年一直在探索用预制结构来替代它。预制构件生产方法的进步以及高强混凝土的应用,可使壳面厚度作到40~50mm。试验表明,只要能保证
Base isolation concept is currently accepted as a new strategy for earthquake resistance structures. According to different types of base isolation devices, lam
A long term record of rotifers in Lake Kinneret (Israel) indicated that Keratella cochlearis is the most common zooplankter in it. Population dynamics parameter
基金项目: 应用型本科院校“十一五”国家课题(FIB070335-A2-02);南通大学自然科学研究课题(07Z002);南通大学高等教育研究课题(08GJ007);南通大学2008年团建课题。 在现代商业、金融的投资中,投资者最关心的是采用什么样的投资方式以使得总收益最大.然而, 投资是要承担风险的, 作为投资者, 又希望其投资风险尽可能小.而且,大的收益总是伴随着高的风险.一般在有很多种
<正> 预算定额的混凝土水泥耗用量指标,应按建筑工程有关规范施工配制强度的要求确定。历年的混凝土及钢筋混凝土工程施工验收规范(如GBJ10-65和GBJ204-83)与现行《钢筋混凝
Soil samples were collected from and around Zliten cement factory, Zliten town, Libya. Soil metals and microbial contents were determined. The results obtained