全文获取类型
收费全文 | 307篇 |
免费 | 2篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 23篇 |
废物处理 | 8篇 |
环保管理 | 46篇 |
综合类 | 58篇 |
基础理论 | 67篇 |
环境理论 | 1篇 |
污染及防治 | 65篇 |
评价与监测 | 14篇 |
社会与环境 | 25篇 |
灾害及防治 | 5篇 |
出版年
2022年 | 5篇 |
2021年 | 10篇 |
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 7篇 |
2017年 | 16篇 |
2016年 | 18篇 |
2015年 | 16篇 |
2014年 | 7篇 |
2013年 | 12篇 |
2012年 | 14篇 |
2011年 | 16篇 |
2010年 | 14篇 |
2009年 | 12篇 |
2008年 | 10篇 |
2007年 | 20篇 |
2006年 | 9篇 |
2005年 | 9篇 |
2004年 | 12篇 |
2003年 | 9篇 |
2002年 | 10篇 |
2001年 | 5篇 |
2000年 | 7篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 5篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1993年 | 7篇 |
1991年 | 4篇 |
1985年 | 2篇 |
1983年 | 3篇 |
1981年 | 2篇 |
1975年 | 1篇 |
1970年 | 1篇 |
1968年 | 1篇 |
1967年 | 1篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1964年 | 4篇 |
1959年 | 2篇 |
1956年 | 1篇 |
1953年 | 1篇 |
1951年 | 1篇 |
1950年 | 1篇 |
1948年 | 1篇 |
1946年 | 1篇 |
1940年 | 1篇 |
1936年 | 2篇 |
排序方式: 共有312条查询结果,搜索用时 281 毫秒
31.
32.
33.
Ruth F. Weiner Daniel A. Jaffe 《Journal of the Air & Waste Management Association (1995)》2013,63(8):797-801
An analysis was made of 49 applications for PSD permits in EPA Region X. Factors studied included the time needed to secure a permit, the regulation which determined the permit (BACT, NSPS, the PSD increment state regulation) and differences in suggested control techniques between EPA and the applicant. These factors were correlated with the category of industry applying for the permit and potential, reduction in air contamination. 相似文献
34.
In the present study the water movement in a bottom ash landfill from a municipal solid waste incinerator (MSWI) was investigated. The pore regime of such landfills consists of macropores (with diameter > 50 microm), which make up about two-thirds of the total porosity and micropores. The program MACRO, which describes flow through porous media and takes both macro- and micropore flows into account, was applied. The model was calibrated with a time series from the landfill Riet, near Winterthur in Switzerland. In the present study the model was recalibrated at a time series for 1 year. With this scenario the influence of an expected reduction or increase of the porosity on leachate behaviour of such landfills over a long time (> 100 years) was studied ('long-term behaviour'). It has been shown that reliable information about water percolation can only be provided by obtaining more information about the hydraulic structure of such landfills. In particular, the number of macropores and the porosity exert great influence on the water movement. 相似文献
35.
This is the third update of research on graduated driver licensing (GDL) and related teenage driver issues. It briefly summarizes research published since or not included in the 2005 update (Hedlund, J., & Compton, R. (2005). Graduated driver licensing research in 2004 and 2005. Journal of Safety Research, 36(2), 109-119.), describes research in progress of which the authors are aware, and announces plans for a symposium on teenage driving and GDL to be held in February 2007. 相似文献
36.
在关于改善环境的科学与政策讨论中,最经常提到的话题之一就是如何使小型和中等规模的企业参与进来. 相似文献
37.
Hull, a city in the East Riding of Yorkshire, United Kingdom, suffered severe flooding in June 2007, affecting some 8,600 households and most schools. Despite the potential for damage in such disasters, no studies of the effects of floods on teachers and schools in the UK appear to have been published previously. This study analysed the impacts of the floods on teachers in Hull in two stages: first through correspondence with Hull City Council and a mailed questionnaire to 91 head teachers of primary, secondary, and special schools; and second, through in‐depth interviews with head teachers from six flooded schools, representing different degrees of flood experience, and a questionnaire completed by eight teachers from the same schools. The findings reveal the importance and the complexity of the role of the school in the wider community in a time of crisis. The study highlights issues concerning preparedness for floods, support for schools, and flood protection for schools. 相似文献
38.
El Rasafi Taoufik Pereira Ruth Pinto Glória Gonçalves Fernando J. M. Haddioui Abdelmajid Ksibi Mohamed Römbke Jörg Sousa José Paulo Marques Catarina R. 《Environmental science and pollution research international》2021,28(13):15782-15793
Environmental Science and Pollution Research - The contamination left by abandoned mines demands sustainable mitigation measures. Hence, the aim of this study was to examine the phytoremediator... 相似文献
39.
40.
Marc Nagtegaal Thomas A. Ternes Wolfram Baumann Roland Nagel 《Environmental Sciences Europe》1997,9(2):79-86
A method was developed for the analysis of fish samples to detect sunscreen agents (SSA) together with organochlorides (PCB, DDT) in different fish tissues. Detection limits of the compounds analyzed are in the range of ng/kg and vary between 40 and 90 ng/kg fillet. Recovery rates range from 78 to 104%. The contamination of water and fish with SSA in Meerfelder Maar lake, the Eifel, Germany was investigated in 1991 and 1993 and allowed the identification and quantification of six different SSA in the fish. The sum of SSA concentrations in perch taken in the summer of 1991 was 2.0 mg/kg lipid and 0.50 mg/kg lipid was found in roach sampled during the summer of 1993. Both species were contaminated with SSA and organochlorides to the same ranges as PCB and DDT. Even in the fillet of roach taken from three other lakes in Germany, methylbenzylidene camphor, a lipophilic SSA, was detected. These results indicate that SSA are wide-spread in German lakes. Therefore, they can be seen as a new group of relevant environmental chemicals. In the investigated lakes, the concentrations of the SSA in water were mostly below the detection limits. Thus, fish can be used as a biomonitor for these lipophilic compounds. Due to the lack of toxicological data for aquatic organisms, an ecotoxicological assessment is impossible at the moment. 相似文献