A series of macroporous silicates with zeolitic microporous frameworks have been successfully prepared by self assembly of discrete colloidal crystals of silicalite 1, titanium silicalite 1(TS 1) and ZSM 5 , using pol...A series of macroporous silicates with zeolitic microporous frameworks have been successfully prepared by self assembly of discrete colloidal crystals of silicalite 1, titanium silicalite 1(TS 1) and ZSM 5 , using polystyrene(PS) spheres as templates. The properties of these novel materials were characterized by means of XRD, IR, SEM, 29 Si MAS NMR and N 2 adsorption/desorption measurements. These materials show ordered spheroidal voids, which are interconnected in three dimensions through windows. The ordering of the macropores are mainly affected by the particle size of the colloidal zeolites. [WT5HZ]展开更多
文中将Web技术与World Wind开源软件结合起来,通过三维建模技术和三维GIS技术开发设计一个具有交互功能的Web三维可视化平台。该平台采用B/S架构,应用空间数据库PostgreSQL储存管理三维数据和二维属性数据,使用Web World Wind软件实现...文中将Web技术与World Wind开源软件结合起来,通过三维建模技术和三维GIS技术开发设计一个具有交互功能的Web三维可视化平台。该平台采用B/S架构,应用空间数据库PostgreSQL储存管理三维数据和二维属性数据,使用Web World Wind软件实现三维数据的显示,开发完成了模型加载、空间量测、模型搜索、属性显示、飞行漫游和二三维联动等功能。利用该平台用户只需使用浏览器就能访问查看场景的三维效果,从而达到三维可视化目的。展开更多
文摘A series of macroporous silicates with zeolitic microporous frameworks have been successfully prepared by self assembly of discrete colloidal crystals of silicalite 1, titanium silicalite 1(TS 1) and ZSM 5 , using polystyrene(PS) spheres as templates. The properties of these novel materials were characterized by means of XRD, IR, SEM, 29 Si MAS NMR and N 2 adsorption/desorption measurements. These materials show ordered spheroidal voids, which are interconnected in three dimensions through windows. The ordering of the macropores are mainly affected by the particle size of the colloidal zeolites. [WT5HZ]
文摘文中将Web技术与World Wind开源软件结合起来,通过三维建模技术和三维GIS技术开发设计一个具有交互功能的Web三维可视化平台。该平台采用B/S架构,应用空间数据库PostgreSQL储存管理三维数据和二维属性数据,使用Web World Wind软件实现三维数据的显示,开发完成了模型加载、空间量测、模型搜索、属性显示、飞行漫游和二三维联动等功能。利用该平台用户只需使用浏览器就能访问查看场景的三维效果,从而达到三维可视化目的。
