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Christos Aristeides Tsiliyannis 《Waste management (New York, N.Y.)》2014,34(7):1335-1350
Planning of end-of-life (EoL) product take-back systems and sizing of dismantling and recycling centers, entails the EoL flow (EoLF) that originates from the product dynamic stock (DS). Several uncertain factors (economic, technological, health, social and environmental) render both the EoLF and the remaining stock uncertain. Early losses of products during use due to biodegradation, wear and uncertain factors such as withdrawals and exports of used, may diminish the stock and the EoLF. Life expectancy prediction methods are static, ignoring early losses and inapt under dynamic conditions. Existing dynamic methods, either consider a single uncertain factor (e.g. GDP) approximately or heuristically modelled and ignore other factors that may become dominant, or assume cognizance of DS and of the center axis of the EoL exit distribution that are unknown for most products. As a result, reliable dynamic EoLF prediction for both durables and consumer end-products is still challenging. The present work develops an identification method for estimating the early loss and DS and predicting the dynamic EoLF, based on available input data (production + net imports) and on sampled measurements of the stock mean-age and the EoLF mean-age. The mean ages are scaled quantities, slowly varying, even under dynamic conditions and can be reliably determined, even from small size and/or frequent samples. The method identifies the early loss sequence, as well as the center axis and spread of the EoL exit distribution, which are subsequently used to determine the DS and EoLF profiles, enabling consistent and reliable predictions. 相似文献
83.
比较了几种无机混凝剂对洗煤废水的处理效果,确定了采用CaCl2作为混凝剂,联合有机絮凝剂PAM处理洗煤废水。结果表明:最佳条件如下,400mL水样中10%的CaCl2溶液加入量为6mL,浓度为0.2%的PAM 6mL,分别以120r/min的搅拌速度搅拌,搅拌90s,最后将水样沉淀25min。 相似文献
84.
Based upon a survey on household electronic and electrical equipment, this paper provides information on the public's perception of the local environmental quality, environmental awareness and environmental performance, and of their willingness to pay for improving environmental quality and making green purchases. The results indicate that Ningbo residents are not satisfied with the local environmental quality, and they would like very much to share environmental responsibility. About 64% of the respondents are aware of Chinese environmental labeling. Nearly 70% and 80% of the respondents are willing to pay for environmental improvement and to purchase environmentally friendly products, respectively. The amount of household electrical and electronic equipment has increased dramatically and most of them are phased out within their product lifetimes. Of all the respondents, 61% chose to reuse and recycle waste electrical and electronic equipment. 相似文献
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以江苏油田某个典型的老油区为例,分析油田开发后期污水处理工艺现状、困境与对策,该油田将污水处理后作为驱油介质,实现污水资源化处理,保证污水零排放,并为新油田开发提供可借鉴的经验。 相似文献
88.
炼油厂碱渣的治理与综合利用 总被引:11,自引:0,他引:11
余伟 《石油化工环境保护》2001,24(2):43-45
从武汉石化厂碱渣来源分析碱渣污染物特征和游离碱浓度,概述并浅析目前国内碱渣处理工艺,重点介绍我厂减渣治理中源头控制,分质处理,二次利用的环保效益和经济效益并重的工作思路及碱渣治理的实践。 相似文献
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高技术再资源化是根治“白色污染”的主要方向 总被引:2,自引:0,他引:2
针对“白色污染”日益严重的现状,对现有的“白色污染”防治对策和技术进行了分析探讨,指出简单的技术已不适用,可降解的发展尚需时日,而废塑料再资源化技术才是根治“白色污染”的主要方向。 相似文献
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