板料液压成形技术的发展动态及应用

介绍了板料液压成形技术的发展 ,尤其是近几年发展起来的径向加压的液压成形、液压成对成形和粘性介质压力成形等 3种金属成形技术 ,以及近几年国外板料液压成形设备的开发和应用情况。     

未确知测度模型及在环境质量评价中的应用

对未确知测度综合评价模型作一简要介绍，并将该模型应用于环境质量评价，提出了确定污染指标权重的新方法。通过6个湖库水体高营养化程度综合评价实例比较，结果表明，其评价结果与调查实况相符，可应用于其他环境质量评价领域。     

对中国城市环境地质工作的思考

本文回顾了国内外城市地质工作的发展历程，阐述了中国城市地质工人的发展方向和重点工作领域。指出城市地质工作必须服务于城市（城市群，经济开发区）的规划，建设和管理，为城市社会经济可持续发展，减灾防灾提供具有针对性，实用性和超前性的基础地质资料和成果。由于中国城市的规模，性质，自然资源承载力，地质环境特征不同，城市环境地质调查，评价的对象，内容也将有所差异。归纳起来，城市地质的重点工作领域为：城市可持续发展，城市可持续发展的资源开发战略与对策，城市地质环境容量及脆弱性分析。城市地质灾害：城市地质灾害风险，影响面，易损性及对灾害的反应，城市环境变化的地质指标体系，城市环境地质综合研究：城市环境地质调查评价的新理论，新方法，新技术，城市环境地质图纱的编制。数字城市环境地质：GIS平台上的地质空间数据库，城市地质环境动态分析，评价，决策系统和地质灾害预警预报系统。     

底泥中酸性挥发硫及同步浸提金属的测定

同步浸提金属与酸性挥发硫的比值在判断底泥重金属生物毒性方面有重要意义．描述了一套测定底泥酸性挥发硫和同步浸提金属的仪器装置和分析程序．从气体流速、反应时间、酸浓度、硫含量等方面研究了酸性挥发硫测定的最适反应条件．在此条件下酸性挥发硫的测定回收率可达９０％以上．该方法的最低检出限为００２μｍｏｌ／ｇ（干泥）．     

城市生活垃圾堆肥对水稻生长和土壤的影响

利用城市生活垃圾堆肥作为肥料,采用水培法和土培法对水稻生长和土壤的影响进行了试验研究。结果表明,施用城市生活垃圾堆肥明显提高了水稻的生长量,增加了水稻植株茎叶中硅的含量;降低了糙米中有毒元素镉的含量;改变了土壤的酸度,增强了土壤的肥力;水稻植株和土壤中某些有害元素的含量略有增加,但远低于环境的允许值。     

Impacts of climate change on wheat development and production in the northern China

In this paper, impacts of climate change on wheat development rate and production in the northern China are discussed. The results show that the temperature is a controlling factor of development rate but the precipitation is not. The higher the temperature is. the faster the development and the shorter development period will be. Without consideration to varieties and cropping system, meteorological yield of winter wheat would decrease 170.40, 134.25, 98.70 and 97.20 kg/hm2 in the north China and 13.97, 7.95, 39.60 and 19.80 kg/hm2 in the northwest China compared with that in 1950s, 1960s, 1970s and 1980s, respectively, when the CO2 concentration in the atmosphere is doubled. In drought and semi-drought regions, the spring wheat yield would drop with the temperature rise in and raise with the precipitation increase. The influence of temperature on weight of leaf and stalk is also remarkable.     

发达农村生活垃圾特性调查及治理技术探讨

为了了解我国发达地区农村垃圾特征,以丹阳市群楼村为研究对象,通过现场调查和问卷调查的方式分析了群楼村的垃圾特性,并对群楼村垃圾的集运方式、处理措施以及当地居民对垃圾的认识进行了调查。表明群楼村的垃圾已经具有城市垃圾的特征,但垃圾配套处理措施及居民意识远远没有达到要求。根据调查的结果探讨了适合群楼村以及发达地区农村生活垃圾集运方式与管理模式。     

应用钻井新技术控制污染

在石油钻井生产施工过程中,排放大量的固体废弃物、废水、废气,对环境造成污染,危害周围的生态环境.据初步统计,胜利油田陆上钻井产生约1×106t/a钻井废弃物.根据污染控制的原则,一般将污染治理分为源头控制、过程控制和末端治理三种方法,目前常用固液分离、化学固化、废钻井液回收再利用处理技术等末端治理方法,缺陷是处理污染物量大、费用高,容易产生二次污染.我们应用钻井新技术从源头和过程控制污染,实践后取得了明显的效果.     

Effects of acid,acid-ZVI/PMS,Fe(Ⅱ)/PMS and ZVI/PMS conditioning on the wastewater activated sludge(WAS)dewaterability and extracellular polymeric substances(EPS)

The effects of four conditioning approaches:Acid,Acid-zero-valent iron(ZVI)/peroxydisulfate(PMS),Fe(Ⅱ)/PMS and ZVI/PMS,on wastewater activated sludge(WAS) dewatering and organics distribution in supernatant and extracellular polymeric substances(EPS) layers were investigated.The highest reduction in bound water and the most WAS destruction was achieved by Acid-ZVI/PMS,and the optimum conditions were pH 3,ZVI dosage 0.15 g/g dry solid(DS),oxone dosage 0.07 g/g DS and reaction time 10.6 min with the reductions in capillary suction time(CST) and water content(Wc) as 19.67% and 8.49%,respectively.Four conditioning approaches could result in TOC increase in EPS layers and supernatant,and protein(PN) content in tightly bound EPS(TB-EPS).After conditioning,organics in EPS layers could migrate to supernatant.Polysaccharide(PS) was easier to migrate to supernatant than PN.In addition,Acid,Acid-ZVI/PMS or Fe(Ⅱ)/PMS conditioning promoted the release of some polysaccharides containing ring vibrations v P=O,v C-O-C,v C-O-P functional groups from TB-EPS.ESR spectra proved that both radicals of SO_4~-· and·OH contributed to dewatering and organics transformation and migration.CST value of WAS positively correlated with the ratios of PN/PS in LB-EPS and total EPS,while it negatively correlated with TOC,PN content and PS content in TB-EPS,as well as PS content in supernatant and LB-EPS.BWC negatively correlated to zeta potential and TOC value,PN content,and HA content in supernatant.     

有机锡化合物测定方法研究进展

总结了有机锡化合物常用的测定方法，包括气相色谱－火焰光度法，气相色谱与原子吸收联用，气相色谱－微波等离子体发射光谱法，气相色谱－质谱法以及液相色谱与名种检测方法联用等。对样品前处理、衍生化方法、色谱分离及测定等也进行了讨论