光合细菌净化养殖池水质的模拟研究

从淡水养鱼池塘底泥中分离得到１株光合细菌。在实验室模拟研究了菌液投加量、光照条件、温度、盐度、常用水产杀虫剂硫酸铜、敌百虫用量对净化养殖池水质效果的影响，结果表明：菌表明：菌液适宜投加量为１０ｍｇ／Ｌ；光照状态下净化效果优于黑暗状态；温度低于１５℃，氯化钠投加量高于１００００ｍｇ／Ｌ，硫酸铜投加量高于０．４ｍｇ／Ｌ，敌百申诉凤加量高于２．０ｍｇ／Ｌ时，净化效果均明显下降。     

论城市污水处理厂的建设与管理

论述了建设城市污水处理厂的必要性、污水处理厂的设计标准与边界条件．从各个不同的方面讨论了污水处理厂的环境影响和防治对策、环境经济效益和管理问题．     

水源中央空调系统生命周期分析模型

以水源中央空调GHP1000为研究对象，通过确定功能单元、清单分析，提出了生命周期分析方法学模型，并对实际工作中发现的若干问题进行了讨论。     

集对分析用于湖泊富营养化评价研究

建立了利用集对分析方法进行湖泊水质富营养化评价的新模型，并研究了我国五个主要湖泊的富营养化状况，与其它方法进行比较，取得了满意的结果，为湖泊水质富营养化评价提供了一种简单而适用的评价方法。     

居住小区雨水资源的利用与治理措施

徐州是严重缺水城市,水资源的匮乏催生了节水措施的开展。结合徐州市某居住小区环境影响报告书中的节水措施,分析其利用雨水资源的可行性和相应的治理措施。     

徐州市奎河河流--地下水渗流系统处理水体中氮

基于污水土地处理系统可以渗漏形式补给地下水的特点，利用现场调查分析的方法，提出了一种新的污水土地处理方式－河流－地下水渗流系统去除污水中氮。结果表明，河流－地下水饱和渗流系统对氮污染组分具有很高的去除作用，在距河流４０ｍ处对污水中氮的去除率达９５％以上，且不受季节变化的影响。     

沙颖河闸坝调控与淮河干流水质风险管理

文章分析了沙颖河闸上重污染水集中泄流与淮河干流突发性污染事故的关系。结果表明：在目前排污条件下，淮河干流突发性污染事故的风险，是沙颖河河道节制闸上蓄积实际用水量数十倍及至近百倍的重污染水所造成的。但是，只要闸上始终保持１０￣１５ｄ蓄积水量的规模，然后每天不间断地泄流日均蓄水量规模的水量，则完全可以协调农业生产与淮河干流水质保护之间的关系。     

The time of appearance and disappearance of fetal DNA from the maternal circulation

A single copy Y-chromosome DNA sequence was amplified using the polymerase chain reaction (PCR) from the peripheral blood of 30 women who had achieved a pregnancy through an in vitro fertilization (IVF) programme. The time of conception was known precisely and was confirmed by serial ultrasound scans. Conceptions were dated as the number of weeks after fertilization plus 2, to give a time equivalent to the obstetric menstrual dating of the pregnancy (LMP). Y-chromosome-specific DNA was detected in all pregnancies with a male fetus (18/30). The earliest detection was at 4 weeks and 5 days, and the latest at 7 weeks and 1 day. Y-chromosome-specific sequences were no longer detected in any of the male pregnancies 8 weeks after delivery. No Y-chromosome sequences were detected in any of the pregnancies where only female babies were delivered. This demonstrates that fetal DNA appears in the maternal circulation early in the first trimester, that it can be identified in all pregnancies tested by 7 weeks, that it continues to be present throughout pregnancy, and that it has been cleared from the maternal circulation 2 months after parturition. Early non-invasive prenatal diagnosis for aneuploidies and inherited disorders will be possible in all pregnancies if fetal cells can be isolated free from maternal contamination (or identified accurately in the presence of maternal cells) without problems of contamination from previous pregnancies.     

长寿区饮用水源地保护对策

在分析长寿区水资源开发利用现状的基础上,按照水功能区划结果和水质目标,计算出龙溪河水源地保护区的污染物控制总量和削减量,并提出龙溪河水源地的保护对策。     

生物早期警报系统在水和废水水质评价中的应用

生物监测是评价环境质量的重要手段，生物早期警报系统根据活生物对污染物的灵敏反应，快速确认污染事件，本文对生物早期警报系统的发展，设计与应用进行探讨。