龙川江水质污染状况、发展趋势及水污染防治对策

通过对龙川江水质监测资料、水环境状况调查情况的分析，对龙川江水质发展趋势进行了评价和分析，提出龙川江水环境污染防治的对策。     

制药GMP技改工程水环境影响分析和对策

对湖北施恩堂制药一期GMP技术改造工程产生的水环境影响进行了分析,采用以UASB+SBR为主的工艺处理技改工程和原有工程产生的制药废水,"以新带老"削减,COD、BOD5、SS分别较GMP技改前减排94.6%、94.1%和50.2%,减轻了污染负荷,可实现达标排放,达到了增产减污的目的。     

Successful DNA-based prenatal exclusion of juvenile neuronal ceroid lipofuscinosis

A family with two siblings, 10 and 8 years old, both with clinical and ultrastructural evidence of juvenile neuronal ceroid lipofuscinosis is described. The family was found to be informative for the restriction fragment length polymorphisms (RFLPs) detected by the probes pCJ52–95Ml (locus D16S148) and pCJ52-94Tl (locus D16S159) flanking the juvenile neuronal ceroid lipofuscinosis locus, CLN3. The parents were both heterozygous using these probes, while their two children with juvenile neuronal ceroid lipofuscinosis were both homozygous. Chorionic villi analysis showed that the fetus was heterozygous and had inherited the one allele of the mother which was not found in the two siblings. This suggested that the fetus had derived one healthy allele from the mother, the risk for a double crossing-over being less than 1 per cent. Electron microscopy showed no fingerprint inclusions in chorionic villi. The child was investigated at 6 months of age and found to be healthy, as new fingerprint inclusions were found at electron microscopy and no vacuolated lymphocytes were found in the blood smear. Due to the risk of heterogeneity, both DNA-based analysis and electron microscopy on chorionic villi are recommended for prenatal examination for juvenile neuronal ceroid lipofuscinosis.     

characteristics of PM2.5 in rural areas of southern Jiangsu Province, China

Introduction Anumberofstudiesabroadhavedemonstratedthat atmosphericfineparticulatematter(PM2.5,dp<2.5μm)is notonlyassociatedwithatmosphericvisibilityreductionbut alsohasaclearcorrelationwiththenumberofdailydeathsandhospitalizationsasaconsequenceofpulmonarydisease(Chan,1997;Christoforous,2000;Schwartz,1996;Wilson,1997).On18July,1997,theU.S.EnvironmentalProtectionAgency(USEPA)promulgatednewandsevere standardsforfineparticulates(PM2.5)withthesizebelow2.5μm(15μg m3asannualaverage,65μg m…     

GJB 150A淋雨试验强化试验程序数值模拟和试验装置设计研究

目的 研究GJB 150.8A—2009《军用装备实验室环境试验方法第8部分:淋雨试验》中强化试验程序的工程实现方法.方法 在标准解读的基础上,以强化试验程序用喷嘴为对象,建立数值模型,分析喷嘴在强化试验程序过程中的流场分布,并基于分析结果给出强化试验程序试验装置设计的思路和方法.结果 在喷嘴内,压力变化剧烈,极短距离内由276 kPa迅速降至101 kPa.水流经过喷嘴经历了激烈的加速过程,从距离喷嘴出口0.01～0.4 m,水流速度从251 m/s迅速降至17.8 m/s,到远场趋于稳定.结论 分析结果对指导强化试验程序的试验装置的设计和试验实施具有重要参考意义.     

主成份分析法在大气环境质量综合评价中的应用

介绍了主成份分析法评价大气环境质量的基本原理，并对某市的大气环境质量进行了综合评价。最后，与其它方法的评价结果进行了对比分析，进一步证实了主成份分析法的科学性、合理性。     

灰色系统在城市区域环境噪声分析中的应用

探讨了灰色系统在城市区域环境噪声分析中的应用 ,利用灰色系统对影响城市区域环境噪声变化的因素进行关联分析 ,找出优势因素。结果表明 ,灰关联分析较好地反映实际情况。     

Cobalt in alluvial Egyptian soils as affected by industrial activities

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｎａｔｕｒｅＣｏｏｃｃｕｒｓｉｎｔｗｏｏｘｉｄａｔｉｏｎｓｔａｔｅｓ ,Ｃｏ2 + ａｎｄＣｏ3+ ,ａｎｄｆｏｒｍａｔｉｏｎｏｆｔｈｅｃｏｍｐｌｅｘａｎｉｏｎＣｏ(ＯＨ) - 3 ｉｓａｌｓｏｐｏｓｓｉｂｌｅ .ＤｕｒｉｎｇｗｅａｔｈｅｒｉｎｇＣｏｉｓｒｅｌａｔｉｖｅｌｙｍｏｂｉｌｅｉｎｏｘｉｄｉｚｉｎｇａｃｉｄｅｎｖｉｒｏｎｍｅｎｔ,ｂｕｔｄｕｅｔｏａｈｉｇｈｓｏｒｐｔｉｏｎｂｙＦｅａｎｄＭｎｏｘｉｄｅｓ,ａｓｗｅｌｌａｓｂｙｃｌａｙｍｉｎｅｒａｌｓ,ｔｈｉｓｍｅｔａｌｄｏｅｓｎｏｔｍ…     

利用干酪根固体~(13)C核磁共振法研究下古生界碳酸盐岩的热演化程度

应用固体~(13)C－NMR技术对下古生界,海相碳酸盐岩干酪根的化学组成和结构特征进行研究，提出应用该技术所测算的干酪根结构参数“芳核平均结构尺寸”能较准确地反映碳酸盐岩的热成熟度。首次提出芳核平均结构尺寸与镜质体反射率之间的关系在干酪根的热演化过程中具有“三段式”特征。利用这一成果对华北地区下古生界成熟度进行了测定，与地质背景甚为吻合。     

管式反应器石灰雾液脱硫的数学模拟

建立的一维管式反应器雾液脱硫模型是对蒸发和吸收过程的耦合，以膜理论为基础的吸收机理同时考虑了含硫组分的离解、扩散、反应和固体颗粒的溶解。参数敏感性分析表明，对系统脱硫率影响最显的是出口干湿球温差，石灰颗粒粒度和入口ＳＯ２浓度、传质过程的分析表明，反应开始阶段液膜扩散和固体溶解阻力均存在，而气膜扩散在整个反应过程中都起着重要作用。