我国城市污水工业回用的现状及存在问题的探讨

略述了近几年来我国城市污水工业回用的一些成功经验 ,提出了城市污水工业回用中存在的几个主要问题及其对策 ,展望了我国在这一领域的发展前景。     

生态系统健康评价的研究进展

回顾了生态系统健康的概念,阐述了水生态系统健康评价的三种指标体系:指示物种指标体系、结构功能指标体系、V-O-R指标体系.其中,结构功能指标体系从选取指标和指标分类两方面进行了方法归纳,分析了生态系统健康的几种评价方法,以及讨论了生态系统健康研究中存在的问题和发展趋势.     

重庆市区地质灾害信息数据库设计

本文通过对重庆市地质灾害系统分析，得到重庆市地质灾害的基本规律，在此基础上，将重庆市各种地质灾害的信息输入计算机，基于地理信息系统（MAPGIS）建立重庆市地质灾害属性数据库，实现地质灾害空间信息管理，查询，更新以及稳定性分析，为城市地质灾害的防治和管理提供了可靠的平台。     

新滩滑坡稳定性的有限元分析

根据新滩滑坡的地质背景和工程地质特征，建立了滑坡地质模型，运用有限元数值模拟方法对其稳定性与地质环境的关系进行了分析，并对影响因素作了比较，明确了其形成机理。     

含磷废水处理的研究现状

简要介绍了含磷废水造成的富营养化问题所带来的危害，分析了含磷废水的主要来源，详尽介绍了当前处理含磷废水的各种不同方法，主要介绍了化学沉淀法、生物法、吸附法等在含磷废水处理方面的应用。最后，简要介绍了排放废水污染的控制与恢复。     

重庆城市可持续发展能力的综合评价

城市是否可持续发展已成为人们关注的焦点,但如何测度和评价城市发展的可持续性尚无统一认识.从系统功能角度设计了城市可持续发展的指标体系,运用改进的熵值法对重庆市可持续发展能力进行了定量分析,结合递阶多层次综合评价模型得到相应的变化曲线,并评价了重庆市1994～2003年这10年间的可持续发展能力.     

兼氧技术应用于有机污泥的处理

应用兼氧技术处理有机污泥，对处理过程中挥发性脂肪酸的生成、N元素的变化、兼氧微生物的种群进行了检测，结果表明，有机污泥经过24h兼氧反应后，污泥中的有机物得到降解，酸化反应生成了质量浓度的2531mg/L的乙酸；系统中NH3－N含量略有上升；兼氧反应过程中的微生物以异养型的产酸细菌为优势菌种。污泥被水解酸化后回流到废水处理系统，系统基本无剩余污泥排放。     

大学与市场关系探徽

本文对大学与市场的关系进行了探讨,同时对大学与市场的不同目标进行了比较,指出大学屈服市场力量的危险性,并就大学与市场力量的制衡提出自己的观点。     

湿式纤维栅振动除尘机理与效率的研究

本提出了湿式振动纤维栅除尘机制的理论模型。在风流作用下，纤维振动所产生的水膜增加了湿式振动纤维栅水的活性表面积(称为二次造膜机制)，是提高除尘效率的重要因素。提出了单层湿式振动纤维栅除尘效率的计算式；并从理论上解释了“过滤风速越大，除尘效率越高”这一现象的原因。     

Streamwater chemistry and flow dynamics along vegetation-soil gradient in a subalpine Abies fabri forest watershed, China

Streamwater chemistry and spatial flow dynamics from a subalpine Abies fabri forest in an experimental watershed located in the east slope of Gongga Mountain were analyzed to gain insights into the gradient effect of primary community succession on the stream biogeochemical process. Results showed that high sand content (exceeding 80%) and porosity in the soil(exceeding 20% in A horizon and 35% in B horizon), as well as a thick humus layer on the soil surface, made the water exchange quickly in the Huangbengliu (HBL) watershed. Consequently, no surface runoff was observed, and the stream discharge changed rapidly with the daily precipitation. The flow trends of base ions in the stream water were influenced by the Abies fabri succession gradient. Ca^2 , HCO3^- and SO4^2,- were the dominant anions in the streamwater in this region. A significant difference of Ca^2 , HCO3^- and SO4^2- concentration exported between the succession stages in the watershed can be found. But they had the similar temporal change in the stream flow. Ca^2 , HCO3^- and SO4^2- showed significantly negative correlations with the daily precipitation and the stream discharge. Concentrations of Cl^- , Na^ , K^ , and Mg^2 were low in all streamwaters monitored and we observed no differences along the Abies fabri succession gradient. Low ratios of Na. (Na Ca) (range from 0.1 to 0.2) implied cations were from bedrock weathering (internal source process in the soil system) in this region. But, a variance analysis showed there were almost no differences between rainwater and streamwaters for Mg^2 , Na^ , K^ , and Cl^- concentrations. This indicated that they might be come from rainfall inputs(external source). The highly mobile capacity, rapid water exchange between precipitation and discharge, and long-term export lead to this observed pattern were suggested.