Marine free-living nematodes were investigated at 13 sampling stations divided into three transects in the northern Taiwan Strait in February 1998. One hundred
Desertification control has been facing severe situations in the interlocking area between cultivated land and gazing land in North China since the Qing Dynasty
On the basis of the data obtained in two cruises during October 1997 and May 1998, the concentration distribution and the variation of present species of nutrie
INTRODUCTIONDr. Hollister, a marine geologist of the Woods Hole Oceanographic Institution, first pointed out that there was ocean storm current in the ocean. He
桥涵铺装层水泥混凝土薄层修补要首先检查支座和裂缝 ,修补材料应使用补偿收缩的聚合物水泥混凝土和钢纤维聚合物水泥混凝土 ,修补铺装层厚度不小于 5 cm,单层钢筋网 ,与联系
The aim of this paper is to discuss a catchment-wide approach for analysing the sediment regime with respect to reservoir sedimentation, based on the Alpine Sol
随着我国土地产权制度的建设和不断完善,铁路、公路等线路用地的土地登记工作越来越多,而线路用地不同于常规的土地登记,探讨此类用地的土地登记实践,具有重要的现实意义。本文以金温铁路为例,在对铁路用地具有连续性、整体性及地籍调查界址数据形式多样等特点分析的基础上,应用GIS,通过面向对象的编程实现界址点数据精确上图,建立登记发证的图形数据库,并应用其制图功能和丰富的空间分析与统计分析功能,制定出金华-温
Through synthetic researches of multi-index geological records of Niya section, which are of high resolution in southern margin of Tarim Basin, this paper has r
The formation of sand wave is such a process in which the roughness and discontinuity of the original bed surface cause the disturbance of the bottom laminar fl