Measurement of total OH reactivity by laser-induced pump and probe technique—comprehensive observations in the urban atmosphere of Tokyo

Total OH reactivity was observed by use of the laser-induced pump and probe technique, and the urban air quality in Tokyo was diagnosed comprehensively. The concentrations of NO_x, CO, O₃, non-methane hydrocarbons (NMHCs) and oxygenated volatile organic compounds (OVOCs) were observed simultaneously. The observations were conducted in July and August 2003, and in January, February, May, and November 2004. Generally, the observed OH reactivity was higher than the calculated values derived using the observed concentrations of the trace species. The differences between the observed and calculated values in summer, spring, and autumn were approximately 30%. However, the difference in winter was smaller than those in the other seasons. In addition, while the differences observed in summer, spring, and autumn correlated with the total reactivity of the OVOCs (Σ_i k_OVOCi[OVOC_i](s⁻¹), k_i is rate constant of its compounds with OH), the correlations were not confirmed in the case of winter because atmospheric oxidation was less active and OVOCs levels were low in winter. These results suggest that the secondary products of the photochemical reactions in the atmosphere would be a missing sink for the OH loss process in the urban area.     

应用GIS进行城市震害预测的有利性

研究了应用GIS进行城市震害预测,对于解决或者改善其中存在的以下问题的有利性：①缺乏必要的基础数据;②震害的多因素综合效应考虑不够;③生命线震害预测方法还不成熟;④间接损失预测以及指导救灾关注太少．     

我国城市生活垃圾现状及处理对策

就城市生活垃圾的现状及其存在的问题，提出进一步合理处理和利用城市生活垃圾的对策。     

生态园林与城市环境保护

阐述了生态园林的概念以及它在城市环境保护中的重要作用，讨论了在实施生态园林计划中如何保护、治理城市环境的一些措施，包括城市自然性的恢复，城市的逆境治理和城市的生物多样性的保护与发展等。急切呼吁将生态园林建设同建设环境保护有机地结合起来。     

磁浮交通技术在长大干线应用中的环境保护研究

在分析上海磁悬浮交通示范线主要环境问题的基础上．从规划选线，工程性污染控制以及管理措施等方面探讨了高速磁浮交通技术在长大干线应用过程中的环境污染防治措施．为磁浮交通长大干线的应用提供环境保护对策建议。     

Advanced treatment of oil recovery wastewater from polymer flooding by UV/H2O2/O3 and fine filtration

In order to purify oil recovery wastewater from polymer flooding （ORWPF） in tertiary oil recovery in oil fields, advanced treatment of UV/H2O2/O3 and fine filtration were investigated. The experimental results showed that polyacrylamide and oil remaining in ORWPF after the conventional treatment process could be effectively removed by UV/H2O2/O3 process. Fine filtration gave a high performance in eliminating suspended solids. The treated ORWPF can meet the quality requirement of the wastewater-bearing polymer injection in oilfield and be safely re-injected into oil reservoirs for oil recovery.     

城市高架桥建设对环境的影响

以南通市茶庵殿高架桥建设工程为例，分析了高架桥工程对环境产生污染的原因，并就环境影响评价方法、模式和防治对策等问题进行了阐述和探讨。     

南京东路机动车尾气污染调查和计算分析

机动车排放的尾气是城区重要的污染，是形成光化学烟雾的直接因素。通过对南京东路王开照相馆－东海商厦断面的车流量、污染物浓度和气象要素的调查和监测，分析了南京东路交通流量的特征，估算了这一路段机动车尾气污染源源强，并利用分车道的经验公式计算了选定剖面的ＮＯｘ浓度分布。结果表明：（１）南京东路的车辆构成中出租车占很大比例。一天中车流量存在明显的变化，从西到东和从东到西车道的变化趋势一致，主要集中在白天和     

城市热环境及防治措施

随着城市化速度的加快，热环境诸因素的变化也更显著。分析城市区域特征所引起的热环境各因素的变化趋势，采取相应防治措施，改善城市环境质量。     

城市环境管理信息系统的应用与技术

介绍并讨论了地理信息系统在环境方面的应用及技术，根据我国大城市环境污染现状和环境管理的特点，提出了在地理信息系统技术的支持下．利用数据仓库，建立城市环境污染控制的动态管理系统。