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903.
建设项目环境影响评价中污染物排放总量控制评价方法 总被引:1,自引:0,他引:1
本文提出了在建设项目环境影响评价中关于污染物排放总量控制评价所应包含的内容,介绍了清洁生产纳入环评中的方法,确定了在技术经济合理,污染物排放满足环境质量与排放标准前提下的排放总量,并对其合理性论证方法做了介绍,提出总量控制目标实现的对策。 相似文献
904.
天津市工业污染治理费用函数研究 总被引:3,自引:0,他引:3
邵玉林 《城市环境与城市生态》1999,12(1):29-32
本文利用天津市工业污染治理设施运行数据,依据环境工程学原理,研究了厂级污染费用函数和边际削减费用函数。采用环境经济学软件Stata进行多元回归,得到的天津市厂级污染削减费用函数和边际削减费用函数具有很高的统计意义,可以作为环境保护投入资金铁利用与环境、经济效益的估计,并可应用于工业废水处理的技术、经济分析、工业废水排放标准的经济分析,以及工业废水区域控制规划、战略和政策的研究等领域。 相似文献
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906.
Noni Holmes Helen Lingard Zeynep Yesilyurt Fred De Munk 《Journal of Safety Research》1999,30(4):1104-261
A qualitative study of employers' and employees' meanings of occupational health and safety (OHS) risk control was conducted among a sample of small businesses engaged in the Australian construction industry. Two OHS risks relevant to the construction industry were selected for study. One risk (falls from height) represented an immediate consequence, whereas the other (occupational skin disease) represented a long-term health effect. Meanings of the sources and control for these risks were explored during in-depth interviews. Participants perceived the immediate effect, falls from height OHS risk, as being more important in their workplaces than the delayed effect, skin disease OHS risk. The risk of falls from height was perceived to be controllable but requiring a great deal of effort to prevent, whereas there was a fatalistic resignation to the risk of occupational skin disease. Meanings of risk control for both occupational skin disease and falls from height focused on individual rather than technological risk controls. Organizational barriers to the adoption of technological OHS risk controls in the construction industry were identified. 相似文献
907.
目前我国大中型建设项目和国家重点工程都实行了建设监理制,在控制工程质量、安全、造价和工期等方面均取得了很大成效。本文阐述了建设监理中安全控制的内容,并针对施工中的不安全因素提出了预防对策。 相似文献
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909.
Biological Control of Water Hyacinth Under Conditions of Maintenance Management: Can Herbicides and Insects Be Integrated? 总被引:1,自引:0,他引:1
Ted D. Center F. Allen Dray Jr. Greg P. Jubinsky Michael J. Grodowitz 《Environmental management》1999,23(2):241-256
Neochetina eichhorniae and N. bruchi. We therefore sampled water hyacinth and weevil populations at 54 sites distributed statewide. Half were under maintenance
control, half were not treated with herbicides. General site conditions were assessed, demographic data were collected on
weevil and plant populations, the reproductive condition of the weevils was determined, and plant nutrient and proximate composition
of water hyacinth leaves were analyzed. Water hyacinth infestations under maintenance control were minimal when compared to
unmanaged sites. Likewise, on a population basis, all weevil cohorts were much lower due to the paucity of plants. Plants
at unmanaged sites, where weevil intensities were much higher, suffered high levels of stress and showed low growth potential.
Lower percentages of the female weevils were reproductive at unmanaged sites when compared to managed sites, so densities
of reproductives and immatures were similar at both site types. Reproductive status of the weevils improved with increased
plant quality. Plant quality, in turn, declined as stresses arising from weevil feeding increased. Plant quality was positively
correlated with plant growth potential and flower production. Thus, maintenance control improved plant nutritive quality thereby
inducing reproductive vigor of the weevils, but ensuring plant regrowth and the need for future control. This suggests that
biological and herbicidal controls should be integrated, using herbicides to maintain water hyacinth infestations below management
thresholds but in a manner that conserves biological control agent populations. This approach would lead to improved plant
nutritional quality that would, in turn, stimulate reproduction in biological control agent populations. 相似文献
910.
推广固硫型煤改善城市空气环境质量 总被引:3,自引:0,他引:3
本文论述了固硫型煤在燃煤锅炉尤其是小型茶炉,洗浴炉及采暖炉上具有能消烟,除尘,脱硫 性。目前推广固型改善城市空气环境质量是经济,简便,易于,有效的实用措施。 相似文献