全文获取类型
收费全文 | 425篇 |
免费 | 2篇 |
国内免费 | 8篇 |
专业分类
安全科学 | 10篇 |
废物处理 | 21篇 |
环保管理 | 45篇 |
综合类 | 188篇 |
基础理论 | 67篇 |
环境理论 | 2篇 |
污染及防治 | 78篇 |
评价与监测 | 14篇 |
社会与环境 | 10篇 |
出版年
2022年 | 4篇 |
2021年 | 5篇 |
2020年 | 5篇 |
2019年 | 4篇 |
2018年 | 6篇 |
2017年 | 11篇 |
2016年 | 11篇 |
2015年 | 7篇 |
2014年 | 7篇 |
2013年 | 34篇 |
2012年 | 12篇 |
2011年 | 19篇 |
2010年 | 12篇 |
2009年 | 18篇 |
2008年 | 16篇 |
2007年 | 9篇 |
2006年 | 9篇 |
2005年 | 11篇 |
2004年 | 4篇 |
2003年 | 7篇 |
2002年 | 15篇 |
1999年 | 9篇 |
1998年 | 6篇 |
1996年 | 9篇 |
1994年 | 8篇 |
1993年 | 4篇 |
1992年 | 4篇 |
1991年 | 7篇 |
1990年 | 9篇 |
1989年 | 7篇 |
1987年 | 4篇 |
1984年 | 4篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1975年 | 3篇 |
1974年 | 3篇 |
1973年 | 8篇 |
1969年 | 3篇 |
1965年 | 5篇 |
1964年 | 3篇 |
1963年 | 7篇 |
1962年 | 3篇 |
1961年 | 6篇 |
1960年 | 4篇 |
1959年 | 3篇 |
1958年 | 5篇 |
1957年 | 7篇 |
1954年 | 5篇 |
排序方式: 共有435条查询结果,搜索用时 15 毫秒
61.
Wagner W Gawel J Furuma H De Souza MP Teixeira D Rios L Ohgaki S Zehnder AJ Hemond HF 《Ambio》2002,31(1):2-13
Global freshwater resources are being increasingly polluted and depleted, threatening sustainable development and human and ecosystem health. Utilizing case studies from 4 different watersheds in the United States, Japan, Switzerland, and Brazil, this paper identifies the most relevant sustainability deficits and derives general vectors for more sustainable water management. As a consequence of the demographic and economic developments experienced in the last few decades, each watershed has suffered declines in water quality, streamflow and biotic resources. However, the extent and the cultural perception of these water-related problems vary substantially in the different watersheds, leading to specific water-management strategies. In industrialized countries, exemplified by the US, Switzerland, and Japan, these strategies have primarily consisted of finance- and energy-intensive technologies, allowing these countries to meet water requirements while minimizing human health risks. But, from a sustainability point of view, such strategies, relying on limited natural resources, are not long-term solutions. For newly industrialized countries such as Brazil, expensive technologies for water management are often not economically feasible, thus limiting the extent to which newly industrialized and developing countries can utilize the expertise offered by the industrialized world. Sustainable water management has to be achieved by a common learning process involving industrialized, newly industrialized, and developing countries, following general sustainability guidelines as exemplified in this paper. 相似文献
62.
63.
64.
65.
66.
67.
68.
Vanessa Ecla de Oliveira Ana Paula Vanin Ani Carla Concato Wagner A. Tamagno Helen Treichel Rosilene R. Kaizer 《环境质量管理》2019,29(1):147-154
This study examined behavioral and enzymatic changes of C. elegans from its exposure to aluminum, and the resulting relationship with Alzheimer's disease. After chronic and acute exposure to aluminum, the results indicated that it alters the cholinergic status and behavior parameters of the nematode, suggesting a relationship between exposure to aluminum and the etiology of AD. 相似文献
69.
Edgar Tristán Hernández Ignacio Pavón García Juan Manuel López Navarro Eleazar Samuel Kolosovas-Machuca 《International journal of occupational safety and ergonomics》2016,22(2):274-278
Noise conditions specifically in areas inside university facilities and its impact on the quality of life of university students are topics that have received little attention. This paper presents a study of the noise conditions in which university students of various institutions in Madrid, Spain, carry out their daily studies. A representative number of measurements was carried out using noise dosemeters and dataloggers in order to evaluate the levels of noise, noise dose and exposure to noise during school periods and extracurricular activities. The results were compared with the recommendations given by current environmental noise regulations. This paper was complemented with a survey to get to know how students perceive the exposure to noise in university environments. 相似文献
70.
This paper discusses the findings of the first car MAX-DOAS (multi-axis differential optical absorption spectroscopy) field campaign (300 km long) along the National Highway-05 (N5-Highway) of Pakistan conducted on 13 and 14 November, 2012. The main objective of the field campaign was to assess the spatial distribution of tropospheric nitrogen dioxide (NO2) columns and corresponding concentrations along the N5-Highway from Islamabad to Lahore. Source identification of NO2 revealed that the concentrations were higher within major cities along the highway. The highest NO2 vertical column densities (NO2 VCDs) were found around two major cities of Rawalpindi and Lahore. This study also presents a comparison of NO2 VCDs measured by the ozone monitoring instrument (OMI) and car MAX-DOAS observations. The comparison revealed similar spatial distribution of the NO2 columns with both car MAX-DOAS and satellite observations, but the car MAX-DOAS observations show much more spatial details. Maximum NO2 VCD retrieved from car MAX-DOAS observations was up to an order of magnitude larger than the OMI observations in urban areas. 相似文献