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142.
拉链排咪、塑料制品和印刷行业VOCs排放特征比对分析 总被引:1,自引:0,他引:1
采用GC-MS法测定拉链排咪、塑料制品、包装印刷行业的生产车间无组织VOCs排放,得到3个工业源VOCs源成分谱。结果表明:不同工业源排放的VOCs组分存在明显差异,拉链排咪以苯系物为主,占比3529%,主要污染物为正己烷、二氯甲烷、甲苯;塑料制品中苯系物占比为4735%,甲苯、乙酸乙酯、正己烷为主要污染物;包装印刷中苯系物质量分数高达6367%,甲苯、1,2,4-三甲苯、丙酮为主要污染物 相似文献
143.
阐述了当前我国大型危险化工企业危险源监测及预警系统建设的现状与不足,以泰州梅兰集团为例,提出了大型危险化工企业危险源监测及预警系统的建设目标及原则,应急预警处置系统的主要内容、标准与要求。 相似文献
144.
水泥工业清洁生产与环境保护初探 总被引:2,自引:0,他引:2
水泥工业是个能耗高、污染物排放量大的重污染行业,其对环境的污染主要是粉尘污染。在水泥厂实施清洁生产的潜力很大,不仅可以降低能耗、物耗,减少污染物的排放,同时,由于加强了管理,有助于提高生产效率,提高产品质量,降低生产成本,增强市场竞争力,可产生明显的经济、环境和社会效益 相似文献
145.
This paper describes a more compelling case for industry to promote the non-energy benefits of energy efficiency investments. We do this in two ways to actively appeal to chief executive officers (CEOs) and chief financial officers (CFOs) primary responsibility: to enhance shareholder value. First, we describe the use of a project-by-project corporate financial analysis approach to quantify a broader range of productivity benefits that stem from investments in energy-efficient technologies, including waste reduction and pollution prevention. Second, and perhaps just as important, we present such information in corporate financial terms. These standard, widely-accepted analysis procedures are more credible to industry than the economic modeling done in the past because they are structured in the same way corporate financial analysts perform discounted cashflow investment analyses on individual projects. Case studies including such financial analyses, which quantify both energy and non-energy benefits from investments in energy-efficient technologies, are presented. Experience shows that energy efficiency projects’ non-energy benefits often exceed the value of energy savings, so energy savings should be viewed more correctly as part of the total benefits, rather than the focus of the results. Quantifying the total benefits of energy efficiency projects helps companies understand the financial opportunities of investments in energy-efficient technologies. Making a case for investing in energy-efficient technologies based on energy savings alone has not always proven successful. Evidence suggests, however, that industrial decision makers will understand energy efficiency investments as part of a broader set of parameters that affect company productivity and profitability. 相似文献
146.
In this paper, black rice husk ashes (BRHAs), which are agrowastes from an electricity generating power plant and a rice mill, were ground and used as a partial cement replacement. The durability of mortars under sulfate attack including expansion and compressive strength loss were investigated. For parametric study, BRHA were used as a Portland cement Type 1 replacement at the levels of 0%, 10%, 30%, and 50% by weight of binder. The water-to-binder ratios were 0.55 and 0.65. For the durability of mortar exposed to sulfate attack, 5% sodium sulfate (Na2SO4) and magnesium sulfate (MgSO4) solutions were used. As a result, when increasing the percentage replacement of BRHA, the expansion and compressive strength loss of mortar decreased. At the replacement levels of 30% and 50% of BRHA, the expansion of the mortars was less than those mixed with sulfate-resistant cement. However, the expansion of the mortars exposed to Na2SO4 was more than those exposed to MgSO4. Increasing the replacement level of BRHA tends to reduce the compressive strength loss of mortars exposed to Na2SO4 attack. In contrary, under MgSO4 attack, when increasing the replacement level of BRHA, the compressive strength loss increases from 0% to 50% in comparison to Portland cement mortar. Results show that ground BRHA can be applied as a pozzolanic material to concrete and also improve resistance to sodium sulfate attack, but it can impair resistance to magnesium sulfate attack. 相似文献
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分析“十二五”水泥行业NOx减排形势,探讨积极应对措施,对推进水泥行业NOx减排工作及实现减排目标具有重要意义.本研究在对水泥行业NOx排放控制现状分析的基础上,结合水泥行业产业政策和环境管理要求,采用情景分析法,对“十二五”水泥行业NOx新增排放量进行了预测,探讨了不同减排途径下水泥行业可实现的减排目标及面临的减排形势,并从激励机制、政策引导、循环经济、监督管理等方面提出了相应的意见和建议. 相似文献
150.
Life cycle assessment, LCA, has become a key methodology to evaluate the environmental performance of products, services and processes and it is considered a powerful tool for decision makers. Waste treatment options are frequently evaluated using LCA methodologies in order to determine the option with the lowest environmental impact. Due to the approximate nature of LCA, where results are highly influenced by the assumptions made in the definition of the system, this methodology has certain non-negligible limitations. Because of that, the use of LCA to assess waste co-incineration in cement kilns is reviewed in this paper, with a special attention to those key inventory results highly dependent on the initial assumptions made. Therefore, the main focus of this paper is the life cycle inventory, LCI, of carbon emissions, primary energy and air emissions. When the focus is made on cement production, a tonne of cement is usually the functional unit. In this case, waste co-incineration has a non-significant role on CO2 emissions from the cement kiln and an important energy efficiency loss can be deduced from the industry performance data, which is rarely taken into account by LCA practitioners. If cement kilns are considered as another waste treatment option, the functional unit is usually 1 t of waste to be treated. In this case, it has been observed that contradictory results may arise depending on the initial assumptions, generating high uncertainty in the results. Air emissions, as heavy metals, are quite relevant when assessing waste co-incineration, as the amount of pollutants in the input are increased. Constant transfer factors are mainly used for heavy metals, but it may not be the correct approach for mercury emissions. 相似文献