多通管塑挤胀形关键技术的研究

多通管是工业上应用量大面广的一种基础件,但其传统的制造工艺目前还只限于铸造、焊接和机加工等,从经济或技术的角度讲都显得比较落后.此文讨论了利用聚氨酯橡胶棒为胀形介质,采用塑挤胀形的复合工艺把无缝管坯一次成形为成品的加工方法,分析了多通管塑挤胀形的过程,讨论了冲头作用于管坯的压力、聚氨酯橡胶棒产生的内压和平衡缸应提供的背压三者间应具备的合理的关系.以使变形区处于最有利于变形的强烈的三向压应力和合适的偏应力状态,获得尽可能长的支管.     

环境影响分析

本世纪六十年代中期以业，西方国家已经对环境分析（或评价）产生极大兴趣。对开发建设项目与自然环境的影响引起广泛关注。本文综述了美国，世界银行组织有关环境评价工作程序；环境评价的任务内容和实例，收集资料的方法；以及地理学家的重要作用。     

阜新市10年大气质量变化与分析

本文介绍了阜新市１９８１—１９９０年间大气质量变化情况，分析了引起这种变化的各种因素．提出了进一步改善阜新市大气环境的几点建议．     

A proposed Multi Criteria Analysis decision support tool for international environmental policy issues: a pilot application to emissions control in the international aviation sector

Policy making at the level of international environmental problems appears to lack a transparent, multi criteria based, decision support ‘tool’. This is due mainly to the highly political, volatile, and contextual nature of issues at this level. The environmental problem of how to regulate emissions from international civil aviation due to their transboundary nature, and the participation of international and domestic players, makes it a ‘wicked’ international environmental problem where policy making has proved problematic. This problem has been used as the basis for developing and pilot testing a tool for contributing to international policymaking, the Multi Criteria Decision Support System (MCDSS). This tool is based on simplifying and integrating key components of Multi Criteria Analysis with a Decision Support System. A preliminary application of the tool explored three options for progressing the reduction of aviation emissions. Testing was based on the allocation of weights to environmental, social, economic and institutional categories, which were each then internally weighted to reflect key criteria in the policy process. Finally, likely performances of each option, against the criteria, were evaluated against Likert scale measures. The outputs from each of these steps were combined to generate a summed best policy option. Conclusions have been drawn and they indicate that the tool is potentially useful especially in the initial stages of policy development. The MCDSS is not an alternative to the international policy process, but rather complements, and makes explicit key tradeoffs in, that process.     

油轮压舱含油污水处理技术分析

原设计污水处理工艺除油效果不理想，将曝气浮选法改为溶气气浮浮选法，通过对污水静置沉降、斜板隔油、溶气气浮、果壳过滤、CSF过滤等各单元处理，及污水中的油分分析，特别是对斜板隔油、溶气气浮单元加入药剂前后的除油效果进行对比，从结果可知，处理后的污水中油分含量低于10mg/L，实现了达标排放。     

催化裂解和重油催化裂化装置二氧化硫达标排放问题

分析了催化裂解（ARGG）、重油催化裂化（RFCC）装置含硫污染物的分布和硫转移关系，指出催化加工装置的二氧化硫污染源，并对其进行了达标分析。     

我国环境污染的因子分析

改革开放以来，我国经济发展迅速，取得了举世瞩目的伟大成就。但在经济快速发展的同时，也带来了一些负面效应，如环境污染。本文采用因子分析法对全国31个省、自治区、直辖市的环境污染进行了分析、评价，并运用SPSSl0．0统计软件对数据进行了计算、处理。通过分析表明我国目前环境污染较为严重，本文通过分析、评价可以为我国的环境污染防治提供一定的理论基础。     

各类除尘设施的收尘效率分析

探查各类除尘设施对烟气中不同粒径尘的捕集效率 ,证明了除尘前烟气中尘粒约有 70 %集中在大于 1 0μm的粒径范围 ,除尘后尘粒约 64%集中在小于 1 0 μm范围。尘粒的 d50 值由除尘前的 2 6.71 μm降至除尘后的 7.0 7μm。重力式除尘器对烟尘的大颗粒捕集效果较好 ,湿式除尘对 1～ 3 μm的尘粒捕集效率已达 5 5 %以上 ,静电式除尘对各种尘粒的捕集效率都较高。     

隐孢子虫病及其水媒传播控制

综述了隐孢子虫和隐孢子虫病的特性，症状和传播途径，水媒传播的重要案列及其为水工业和水源保护带来的启示。介绍了隐孢子虫的检测方法和相应水质指标的研究现状；给水工业中控制隐孢子虫病传播的主要手段。     

酸沉降物对儿童体质状况的影响

本文采用现场调查方法,于1988年12月与1989年12月,观察了重庆市三个不同酸沉降浓度地区的7～12岁小学生3574人,发现严重污染区儿童上呼吸道及鼻咽部疾患明显增加,血压有下降趋势,白细胞在8岁与11岁组有变化,且与被动吸烟有关,而生长发育指标未见差别。