ASM1中废水和污泥组分浓度的测定方法研究

对呼吸计量法应用于校准ASM1作了简明的阐述。在呼吸速率与模型组分关系的基础上,介绍了ASM1中废水与污泥各组分浓度的测定方法,并指出模型组分细化的意义。     

战略环境评价的工作程序

介绍了战略环境评价（法规、政策、计划和规划层次）工作程序的三个环节：评价方案的制定、评价实施和评价总结。并提出了战略环境评价指标体系制定的原则、战略环境评价的具体步骤及战略环境评价报告书的基本内容。     

厌氧处理原理及其在低浓度有机废水处理中的应用现状

介绍了厌氧处理原理，并对厌氧处理低浓度废水的最新进展进行了较全面的综速，高效厌氧反应器及组合工艺为这一发展提供了可能。高效厌氧反应器中以膨胀颗粒污泥床（ECSB）反应器为首选。其结构及远行特性决定了它在处理低浓度虚水方面具有潜在的优势，但中国EC,SB的应用仅处于研究阶段，尚未有生产规模的EGSB；组合工艺对低浓度废水中污染物去除率极高，出水中COD、NH3-N、TP和SS浓度均可达到较高的排放标准，对生活污水、稀释后的工业有机废水等低浓度有机废水处理具有广阔的前景。     

反静电场处理厌氧污泥的影响因素分析

在电场和电解副效应的共同作用下，选定0．5mA、1．0mA、1．5mA和1．95mA四种电流强度作为不同的运行条件，处理时间24h，分别测定反应开始和结束时厌氧污泥上清液COD、NH4^＋-N和VSS，其变化率随电流强度呈抛物线型变化。用反静电处理厌氧污泥时，电场对污泥参数的影响存在着最佳的工作电流强度，在本试验条件下，反静电处理厌氧污泥的最佳工作电流强度为1．5mA。反静电场可提高微生物的活性，使COD与NH4^＋-N得到一定程度的降解，同时，污泥的性质影响反静电场处理污泥的效果。     

鳗鲡仔鱼(Anguilla japonica Temn.et Schl.)对铜离子的回避反应

本文力图用回避实验的方法分析铜离子对闽江鳗鲡及其他水产资源的影响。实验在流水中进行,温度为16±0.5℃,pH为7.43±0.2,溶解氧为62—68.9％;鱼体长为46—69.5mm,重量为174.2—226.6mg;每一浓度测试20次。当浓度为0.0001ppm时,回避度为12.81％;浓度为0.016ppm时,有明显的回避反应,回避度为58.28％;浓度升至0.064ppm时,回避度84.74％,为完全回避。     

电解-CASS工艺处理制药废水工艺研究与设计

采用电解 CASS工艺处理制药厂废水 ,实现了处理效率高 ,占地面积小 ,工程投资低等优点 ,处理后各项污染指标均达到国家《污水综合排放》(GB8978— 1996)的二级排放标准     

Effect of airborne SO_2 on performance of the turnip moth,Agrotis segetum Schiff

SO2 Pollution; rape plant (Brassica chinensis); turnip moth (Agrotis segetum); growth and developmental parameters.     

四氟乙烯清洁生产工艺和污染控制

分析了传统空管裂解生产四氟乙烯工艺存在的污染问题 ,介绍了水蒸汽稀释裂解生产四氟乙烯工艺的污染控制情况。     

Prenatal diagnosis of mosaic 4p – in a fetus with trisomy 21

Mosaicism for the Wolf-Hirschhorn syndrome, del(4)(p16), is extremely rare and has not been reported in association with a numerical chromosome abnormality. We report the prenatal diagnosis of mosaic del(4)(p16) and non-mosaic trisomy 21 in a 16-week female fetus. The pregnancy ended in spontaneous abortion at 34 weeks secondary to fetal demise. The fetus had features of both 4p – and trisomy 21.     

Detecting neural tube defects by amniocentesis between 11 and 15 weeks' gestation

Forty-two open neural tube defects (NTDs) were identified in our series of 7440 amniocenteses tested between 11 and 15 weeks of gestation. Using a cut-off of ≥2.0 MOM, the detection rate for open NTDs was 95 per cent; 100 per cent each for anencephaly and spina bifida; and 78 per cent for encephalocele. Two encephaloceles had AFP levels less than 2.0 MOM and negative AChEs. Thirty-four (81 per cent) of these NTDs were tested between 13 and 15 weeks and 8 (19 per cent) before 13 weeks. There were 0.6 per cent false positives by AFP (excluding serious abnormalities and fetal death) and 0.1 per cent after AChE. The likelihood of an open NTD after an elevated AFP (≥2.0 MOM) was 24 and 77 per cent for any serious abnormality. These results, when combined with an earlier study, indicate that amniotic fluid AFP appears to be as sensitive a test for open NTDs between 13 and 15 weeks as between 16 and 20 weeks. Additional experience is necessary to determine this before 13 weeks.