矿井重大灾害危险性评价的改进灰色统计法

用灰色统计理论［１］研究了矿井四大灾害即冒顶、水灾、火灾和瓦斯爆炸的危险性预评价问题，提出了一种新的评价方法──灰色统计综合法。同时，从应用的角度出发对灰色统计的算法作了改进，改进后的算法便于记忆和应用。     

Changes in risk perception among North Sea offshore personnel in the period 1990 to 1994

A self-completion questionnaire survey was carried out among employees on offshore oil platforms in the Norwegian part of the North Sea in February 1990 and repeated in February 1994. A total of 915 employees on eight platforms (five oil companies) answered the questionnaire in 1990 and the response rate was 92%. In 1994, 1138 respondents on twelve platforms and nine companies filled in the questionnaire. The response rate was 87%. Significantly fewer of the personnel felt at risk in 1994 compared to 1990. Likewise, a greater percentage of the employees were satisfied with safety and contingency measures, and experienced job stress to a lesser extent in 1994 than they did in 1990.     

物元分析法在大气环境质量评价中的应用

应用物元分析方法构建大气环境质量的综合评价模型，并将该方法用于唐山市大气环境质量评价中，获得了与实际情况基本符合的评价结果。     

Evaluation of the california environmental quality act

The California Environmental Quality Act (CEQA) has evolved from a mini-NEPA, first enacted in 1970, into a procedural act that affects the approval process of all large developments in California. In 1990, California local governments produced over 1600 environmental impact reports and 30,000 initial studies under CEQA. Because of its widespread use, CEQA has periodically drawn the attention of the state legislature, most recently in 1993, when over 60 CEQA reform bills were introduced. This paper describes the CEQA process and evaluates its success at meeting its explicit and implicit goals. The research includes a statewide survey of CEQA practice, sent to the planning departments of all 513 local governments in California in 1991. Survey respondents agreed that CEQA helps in evaluating environmental impacts, reducing impacts, informing the public, and coordinating public agency review. It is effective in reducing the environmental impacts of individual projects, but is not as effective in improving environmental quality on an areawide scale. This research concludes that CEQA has led to positive outcomes and is not as deeply flawed as many of its critics claim. Still, CEQA as currently designed may not be the optimal vehicle for ensuring environmental quality.     

胜利油田生活污水调查及评价

随着人民生活水平的提高，城市人均用水量逐年增加，伴随产生的生活污水已经成为不可忽视的污染源。胜利石油管理局供水公司于１９９３年对胜利油田的污水排放情况进行了调查，调查各单位职工住宅区和机关办公区所排放的生活污水的情况，包括排放生活污水单位的名称、人数、生活用水量、污水排放量和污水水质等，并提出了生活污水的治理对策。     

钻井液化学剂可生物降解性评定方法

介绍研究钻井液化学剂生物降解性的必要性及开发可生物降解钻井液的进展。阐述了常用的评定有机物生物降解性的试验方法。推荐采用BOD_5／COD_Cr比值来评定我国石油行业钻井液化学剂及油田化学剂的可生物降解性，规范石油行业生物降解研究工作，保证评定结果的可靠性和可比性。     

PESTICIDES IN GROUND WATER: DO ATRAZINE METABOLITES MATTER?1

ABSTRACT: Atrazine and atrazine-residue (atrazine + two metabolites - deethylatrazine and deisopropylatrazine) concentrations were examined to determine if consideration of these atrazine metabolites substantially adds to our understanding of the distribution of this pesticide in groundwater of the midcontinental United States. The mean of atrazine.residue concentrations was 53 percent greater than that of atrazine alone for those observations above the detection limit (> 0.05 μg/l). Furthermore, a censored regression analysis using atrazine-residue concentrations revealed significant factors not identified when only atrazine concentrations were used. Thus, knowledge of concentrations of these atrazine metabolites is required to obtain a true estimation of risk of using these aquifers as sources for drinking water, and such knowledge also provides information that ultimately may be important for future management policies designed to reduce atrazine concentrations in ground water.     

非点源污染模型中土壤侵蚀因子研究进展

非点源污染模型是进行非点源污染模拟研究的重要手段，而土壤侵蚀模型是非点源污染模型的基础，土壤侵蚀因子的研究是土壤侵蚀模型的重要基础。本文对国内外主要土壤侵蚀因子研究的成果进行了概述，并指出在今后相当一段时期内，土壤侵蚀因子的研究仍是土壤侵蚀模型研究的重要工作。     

高层建筑物附近架空高压输电线路的走廊问题

采用镜像法实例计算了高层建筑物附近架空高压输电线路的工频电场和无线电干扰场强，并从电磁环评的角度对输电线路走廊的选择提出了一些建议。     

石油污染生物修复技术研究

本文概述了影响石油污染物生物降解修复处理的多种因素，对石油污染生物处理技术的发展进行了展望。其中主要影响因素包括：菌种的影响，菌种在不同的环境中和对不同碳链长度的碳氢化合物表现出不同的降解效率；石油物质本身物理化学特性的影响，如石油物质在水体或土壤中的浓度以及石油的粘度、沸点、折射率等特性；生存环境条件的影响，在接种入高效率的降解菌或利用土著微生物进行降解时，降解率受到生存环境中各种条件的影响，如表面活性剂、光照条件、吸附剂的利用、营养盐、共代谢底物、氧气、温度、盐度等。