两种生物填料净化城市混合污水的对比分析

本文初步对软性、瑞琪两种填料净化城市混合污水的效果进行比较研究，为进一步深入开展土地快速渗滤技术及处理城市混合污水实用技术的研究提供依据。     

Dynamics of explosion venting in a compartment with methane-air mixtures

A series of experiments on explosion venting of methane-air mixtures are performed to scrutinize the pressure evolution as well as the flame dynamics and morphology at various vent conditions. Specifically, a premixed flame is ignited at the center of a polycarbonate cylindrical compartment, with three various vent areas considered (with negligible vent relief pressure). As expected, the highest maximum pressure is observed in the case of the smallest vent area. For all three cases, the pressure evolution experiences two major peaks, associated with the instants (i) when the maximum flame front surface area in the chamber is reached and (ii) when an external explosion occurs due to venting of unburned gases, respectively. For the fuel-rich mixtures, a flashback is observed subsequent to the external explosion, constituting the key outcome of the present work. The flame tip velocities show two general trends, namely, exponential acceleration towards the vent, while a flame propagates towards the blocked side of the compartment with no acceleration, which is important to know in the fire/explosion safety applications.     

基于RIA与WebGIS的空气质量信息服务

根据公众对空气质量知情权的需要,构思了基于RIA与WebGIS的空气质量信息服务设想,介绍了RIA技术和与Flex平台有关的情况,以及Macromedia Flex 体系结构,并根据社会化空气质量信息服务面临的问题,开发了基于Flex与WebGIS的空气质量信息服务系统,验证结果表明,该系统具有可行性和有效性.     

基于ARCGIS API FOR FLEX的污染源WEBGIS研究

本文引入了基于ARCGIS API FOR FLEX的WebGIS技术,介绍了污染源网络地理信息系统的研究思路与方法,在分析系统总体结构、功能模块的基础上提出了三层模型架构、分布式数据库、分布式服务器和富客户端等技术,并最终设计和实现了污染源网络管理信息系统。该系统能够有效地实现污染源空间信息共享,同时为污染源信息管理和环境保护辅助决策提供强有力的技术支持。