大连海事污染案所引发的思考——简析大连开发区一例海域污染损害案件

通过对大连开发区663水产养殖户诉长江航道局海域污染案件的分析,试图说明构成海事污染获得相应民事赔偿的要件和过程,解析其中涉及的一些法律问题和现实因素,以引起对此类案件的关注。     

中德土壤污染治理责任主体比较研究

20世纪80年代,德国在法学理论和司法实务中对土壤污染责任主体的认定,突破了以往侵权责任主体认定的范畴,引入“状态责任”,细化责任主体范围,明确责任内容划分,厘清多重责任主体竞合。我国土壤污染管理起步较晚,在理论研究和司法实务中对主体责任认定标准和责任限度的理解存在分歧,其争议焦点在于各主体在案件中的地位。通过对中德土壤污染治理责任主体的比较,认为我国应在坚持现有规则的前提下借鉴吸收德国在责任内容划分和多重责任主体竞合处理等方面的经验,切实有效地保护土地功能。     

An Approach to Assessing the Impacts of Incident-Free Transportation of Radioactive Materials: I. Air Transportation

Annual radiation doses and risks to passengers and crew are calculated for shipments of radioactive materials in passenger aircraft under accident-free and incident-free conditions (i.e., under normal transportation conditions). The 1982 database developed by Sandia National Laboratories is used, and calculations are made using RADTRAN 4.0. This paper is one of two papers estimating radiological risk associated with incident-free transportation of radioactive materials.     

Quantifying urban forest structure,function, and value: the Chicago Urban Forest Climate Project

This paper is a review of research in Chicago that linked analyses of vegetation structure with forest functions and values. During 1991, the regions trees removed an estimated 5575 metric tons of air pollutants, providing air cleansing worth 9.2 million. Each year they sequester an estimated 315 800 metric tons of carbon. Increasing tree cover 10% or planting about three trees per building lot saves annual heating and cooling costs by an estimated 50 to 90 per dwelling unit because of increased shade, lower summertime air temperatures, and reduced neighborhood wind speeds once the trees mature. The net present value of the services trees provide is estimated as 402 per planted tree. The present value of long-term benefits is more than twice the present value of costs.     

航空快递业特性分析及其在中国发展的设想

在对航空快递业务的内涵、产品特征、运输组织特点、承运方式等特性进行分析的基础上,结合国际快递巨头加快拓展中国业务、国内航空快递业尚处于起步阶段的现状,从理顺行业管理体制和提高企业竞争力两个方面提出了中国快递业发展的设想。     

交通主干道旁室内外空气污染物分析

对上海城市两条交通主干道旁室内外TSP、PM10、CO、CO2、NO2、HCHO、苯、甲苯及二甲苯等主要空气污染物的浓度进行监测，分析了室内外主要空气污染物及其室内／外I／O比值，以及日变化规律，结果表明，城市交通主干道旁室内空气污染程度，取决于室外机动车交通流量及其所使用的燃料。     

0．53μm光致大气击穿实验研究

对锁模Ｎｄ：ＹＡＧ倍频激光作用下，气溶胶粒子对激光大气击穿阈值的影响进行了研究，并对不同光学参数、不同气溶胶下的击穿阈值进行了测量。得到：空气中含较大粒子（Ａｌ２Ｏ３，ＺｎＯ，ＺｒＯ２，１８ｔｈｇｌａｓｓ、ｄ＞３０μｍ）的光致击穿阈值比含较小粒子（ｄ＜１μｍ）的空气击穿阈值低２～３个数量级；含杂空气的击穿阈值随入射激光束直径的增大而下降、随气溶胶粒子直径的增大而减小，且随气溶胶的成分不同而不同。     

长春市空气中花粉分布规律的观测与研究

本文作者于1979年7月11日至1980年9月28日收集、观测长春市空气中花粉,从中发现花粉的分布规律基本反映当地植被的特点。观测空气中花粉变化利于及时掌握植物的花期,对比不同地区物候期的差异并为花粉过敏病提供致敏源分布规律的有力依据。     

An Enforceable Indoor Air Quality Standard for Environmental Tobacco Smoke in the Workplace1

Environmental tobacco smoke (ETS)has recently been determined by U.S. environmental and occupational health authorities to be a human carcinogen. We develop a model which permits using atmospheric nicotine measurements to estimate nonsmokers’ETS lung cancer risks in individual workplaces for the first time. We estimate that during the 1980s, the U.S. nonsmoking adult population's median nicotine lung exposure (homes and workplaces combined)was 143 micrograms (μg)of nicotine daily, and that most-exposed adult nonsmokers inhaled 1430 μg/day. These exposure estimates are validated by pharmacokinetic modeling which yields the corresponding steady-state dose of the nicotine metabolite, cotinine. For U.S. adult nonsmokers of working age, we estimate median cotinine values of about 1.0 nanogram per milliliter (ng/ml)in plasma, and 6.2 ng/ml in urine; for most-exposed nonsmokers, we estimate cotinine concentrations of about 10 ng/ml in plasma and 62 ng/ml in urine. These values are consistent to within 15% of the cotinine values observed in contemporaneous clinical epidemiological studies. Corresponding median risk from ETS exposure in U.S. nonsmokers during the 1980s is estimated at about two lung cancer deaths (LCDs)per 1000 at risk, and for most-exposed nonsmokers, about two LCDs per 100. Risks abroad appear similar. Modeling of the lung cancer mortality risk from passive smoking suggests that de minimis [i.e., “acceptable” (10^-6)], risk occurs at an 8-hr time-weighted-average exposure concentration of 7.5 nanograms of ETS nicotine per cubic meter of workplace air for a working lifetime of 40 years. This model is based upon a linear exposure-response relationship validated by physical, clinical, and epidemiological data. From available data, it appears that workplaces without effective smoking policies considerably exceed this de minimis risk standard. For a substantial fraction of the 59 million nonsmoking workers in the U.S., current workplace exposure to ETS also appears to pose risks exceeding the de manifestos risk level above which carcinogens are strictly regulated by the federal government.     

企业环境绩效信息及其披露

可持续发展理论要求企业在对外提供传统意义上的财务状况和财务成果等方面信息的同时,还需要对外提供企业的环境绩效信息。环境绩效信息包括:企业环保政策和环境法规的执行情况;企业环境质量情况;企业环境治理和污染物利用情况等。对上述信息的披露可通过两种方式来完成:在现有的信息披露工具中加以披露;编制单独的环境绩效报告。