城市街道围墙导控设计初探

围墙是城市街道中的一个组成元素，是城市街道各个系统之间的连接体。围墙在城市中大量的重复存在是对城市街道景观整体性和连续性的补充和丰富。如何应用城市设计方法对围墙及其周边复合界面进行整合，使之符合城市公共环境．融入到整体城市文化中去，是构建和谐的城市整体公共环境的重要问题。     

营造自然亲水的空间——以闽江公园滨水景观设计为例

通过对闽江公园滨水地带景观设计的阐述,探讨了解决过洪公园防洪与亲水、安全与美观问题的思路。     

BP网络与遗传算法在水布垭工程中的应用

基于人工神经网络与遗传算法的基本理论，就其在水布垭混凝土面板堆石工程中的应用进行探讨。一方面，通过BP网络对已建的工程实例资料进行学习，并应用学习结果，根据规范确定的面板允许挠度，对堆石体的垂直压缩模量E进行控制，随之以E的控制值预测面板堆石坝的其他变形。另一方面，基于上述的网络训练结果，以工程的变形控制指标为目标，应用遗传算法对面板堆石坝多个设计参数进行控制。     

液压系统油液污染的危害与控制

对液压系统油液污染及危害进行了分析，并就设计，制造，使用与维修阶段阐述了相应的污染控制措施，指出这对提高主机的运行质量和可靠性有重要意义。     

A review of catchment management in the new context of drinking water safety plans

By managing a catchment effectively, the range and amount of contaminants entering waters used for public water supply can be reduced, with resultant benefits for both water companies and consumers. Consequently, catchment management is increasingly being recognised as being at the heart of the water environment. An overview of current and previous catchment management initiatives is given, along with the European Landscape Convention, which could be used as a vehicle for the implementation of a national catchment management strategy. The adoption of the drinking water safety plan approach is strongly advocated by the World Health Organisation, and effective catchment management underpins this approach. Effective management of our catchments will also make a significant contribution to meeting our obligations under the Water Framework Directive, by helping to address the serious issue of diffuse pollution from agriculture.     

Nanofiltration for the separation of pharmaceuticals from nutrients in source-separated urine

The potential of nanofiltration for the separation of pharmaceutical and estrogenic compounds from salts in urine was investigated with the aim of producing a micropollutant-free nutrient solution that can be used as a fertilizer. A fresh urine solution and a synthetic solution of similar inorganic composition were tested at different pH values in order to investigate their separation behavior. These solutions were spiked with the micropollutants propranolol, ethinylestradiol, ibuprofen, diclofenac and carbamazepine. Among the membranes tested, NF270 showed the best performance with respect to the retention of micropollutants. The optimum retention of micropollutants was obtained at values of around pH 5. At this point, the retention of all micropollutants in non-hydrolysed urine was above 92%, while the corresponding value for the synthetic urine solution was above 73%. From the results, it can be concluded that the retention mechanism is determined by steric and electrostatic effects as well as by the partitioning of the micropollutants in the membrane. The nutrients urea and ammonia were well permeated, but phosphate and sulfate were almost completely retained. Nanofiltration can consequently be used to produce a permeate which contains most of the nitrogen and a greatly reduced proportion of micropollutants.     

Sustainable reduction in the flux of microbial compliance parameters from urban and arable land use to coastal bathing waters by a wetland ecosystem produced by a marine flood defence structure

'Natural' treatment systems such as wetlands and reed beds have been proposed as sustainable means of reducing fluxes of faecal indicator organisms (FIOs) to recreational and shellfish harvesting waters. This is because FIO fluxes to coastal waters from both point (effluent) and diffuse (catchment) sources can cause non-compliance with microbiological standards for bathing and shellfish harvesting waters. The Water Framework Directive requires competent authorities in the member states to manage both point and diffuse sources of FIOs in an integrated manner to achieve compliance with 'good' water quality as defined in a series of daughter Directives. This study was undertaken to investigate the relative sources of FIOs to the popular bathing waters around Clacton, UK. In this predominantly arable (mainly cereal cropping) farming area, the principal land use predictor, explaining 76% of the variance in geometric mean presumptive Escherichia coli concentration at sub-catchment outlets during the bathing season, was the proportion of built-up (i.e. urbanised) land in each sub-catchment. This new finding contrasts with earlier studies in livestock farming regions where the proportion of improved grassland has proven to be the strongest predictor of microbial concentration. Also novel in this investigation, a flood defence wall has been built creating a wetland area which discharges every tidal cycle. The wetland produces over 97% reduction in the flux and concentrations of FIOs to the marine recreational waters. Also, FIO concentrations in water draining through the wetland to the sea were similar to concentrations measured in six UK sewage treatment plant effluents subject to secondary (biological) treatment followed by UV disinfection.     

对防火规范中若干防排烟条款的探讨和建议

从《汽车库、修车库、停车场设计防火规范》及《人民防空工程设计防火规范》的有关条文规定出发,结合实际工作,探讨了防排烟设计中碰到的一些问题,包括排烟防火阀的设置、地下汽车库排烟方式的选择、自行车库及摩托车库的防排烟、机械排烟量的计算等问题,并提出了自己的理解和修改意见。     

混合工质在地热热泵系统中的实验研究

针对以40－45℃地热尾水为低温热源的热泵系统，作了大量的实验研究。首先，在该系统中采用了循环性能较好的低环害混合工质，以达到实际运行和环保要求；其次，根据不同的冷凝器水流量和进口水温，总结得出了大量稳定工况实际样本，绘制了不同流量和水温下的COP值曲面，为热泵在实际工程应用中的变工况调节运行智能化提供了理论依据。     

谈信息设备招标技术文件的编制

介绍了国际机场航站楼公共广播和内部通讯系统的技术招标书的编写格式，及工程要求达到的技术性能指标。