全文获取类型
收费全文 | 229篇 |
免费 | 1篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 9篇 |
环保管理 | 8篇 |
综合类 | 66篇 |
基础理论 | 42篇 |
污染及防治 | 79篇 |
评价与监测 | 11篇 |
社会与环境 | 18篇 |
出版年
2022年 | 2篇 |
2018年 | 7篇 |
2017年 | 9篇 |
2016年 | 6篇 |
2015年 | 5篇 |
2014年 | 6篇 |
2013年 | 4篇 |
2012年 | 6篇 |
2011年 | 13篇 |
2010年 | 7篇 |
2009年 | 8篇 |
2008年 | 10篇 |
2007年 | 19篇 |
2006年 | 17篇 |
2005年 | 14篇 |
2004年 | 5篇 |
2003年 | 7篇 |
2002年 | 2篇 |
2001年 | 7篇 |
2000年 | 3篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1989年 | 2篇 |
1986年 | 2篇 |
1982年 | 2篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1968年 | 2篇 |
1966年 | 4篇 |
1965年 | 3篇 |
1964年 | 1篇 |
1963年 | 2篇 |
1961年 | 4篇 |
1960年 | 2篇 |
1958年 | 1篇 |
1957年 | 3篇 |
1955年 | 2篇 |
1954年 | 1篇 |
1953年 | 1篇 |
1952年 | 1篇 |
1951年 | 1篇 |
1946年 | 1篇 |
1932年 | 1篇 |
1929年 | 1篇 |
1917年 | 1篇 |
排序方式: 共有234条查询结果,搜索用时 15 毫秒
111.
112.
The effective concentrations of 15 chemicals, inhibiting the cell growth of the alga by 10 % and 50 % during 96 hours, have been investigated in a static test under controlled laboratory conditions. 相似文献
113.
Johan Axelman Dag Broman Carina Näf Harald Pettersen 《Environmental science and pollution research international》1995,2(1):33-36
Linear relatinships between log bioconcentration factor (BCF) and log Kow for a variety of compounds have been reported many times in the literature. Analysis of the thermodynamics of the two partition
processes has, however, shown that they are not analogous and that linear relationships can be expected to have different
slopes for structurally unrelated compounds. In this study a set of literature lipid normalized BCF (BCFL) values of chlorbenzenes (CBs) for rainbow trout and polycyclic aromatic hydrocarbons (PAHs) forDaphnia was put together with literature Kow values. The slopes of the regression lines for log BCFL versus log Kow for the two groups of compounds proved to differ significantly in a statistical test using analysis of variance (ANOVA).
The difference, which is of significance for estimates of BCFs in environmental modelling of these types of compounds, is
explained by the differences in chemical structure of the two groups of compounds. 相似文献
114.
Harald J. Geyer Derek C. G. Muir Irene Scheunert Christian E. W. Steinberg Antonius A. W. Kettrup 《Environmental science and pollution research international》1994,1(2):75-80
According to present understanding, persistent superlipophilic chemicals — such as octachlorodibenzo-p-dioxin, octachlorodibenzofuran, Mirex etc — with log Kow > 6 and cross sections > 9.5 Å, bioconcentrate in aquatic organisms only little from ambient water. The most convincing argument against it is that in bioconcentration experiments with superlipophilic chemicals amounts applied exceeded water solubility by several orders of magnitude. This paper describes various methods for determining bioconcentration factors (BCF) of superlipophilic compounds. As exemplified with octachlorodibenzo-p-dioxin, BCF values evaluated by these methods match well with those calculated by QSARs for fish and mussels based on log Kow and water solubility. As expected, these BCF values exceed previous values by several orders of magnitude. For BCF evaluation of superlipophilic chemicals in aquatic organisms we recommend:
- flow-through systems, kinetic method (OECD guideline No. 305 E)
- ambient concentrations < water solubility
- during the uptake and especially during the elimination phase no toxic effects of the test organisms should occur.
115.
Ingrid born Anna-Karin Modin-Edman Helena Bengtsson Gunnela M. Gustafson Eva Salomon S.Ingvar Nilsson Johan Holmqvist Simon Jonsson Harald Sverdrup 《Ambio-人类环境杂志》2005,34(4)
通过把全面的农田试验和矿质风化释放养分以及微量元素循环具体研究结合起来,用一个系统分析方法来评价农场尺度上的养分和微量元素可持续性.为了比较有机和常规农业管理方式,在瑞典北部的Ojebyn奶牛场进行了一个包括磷、钾和锌在内的农场尺度上的实例研究.通过结合不同的元素平衡法(农场总体尺度、畜舍尺度和农田尺度)以及进一步把这些方法应用到FARMFLOw模型,我们能够把子系统内质量流和库结合起来并建立子系统之间联系,来进行农场尺度上的预测.研究发现农场内部的元素流动大,而且农场有内部源(锌)和损失项(钾).在Ojebyn奶牛场形成并得到验证的方法是很有前途的,认为可以应用到任何农场. 相似文献
116.
Karl Oliver Kagan Harald Abele Britta Yazdi Bettina Böer Klaus Pintoffl Dave Wright Markus Hoopmann 《黑龙江环境通报》2011,31(13):1229-1233
117.
118.
Zechmeister HG Dirnböck T Hülber K Mirtl M 《Environmental pollution (Barking, Essex : 1987)》2007,147(3):696-705
The study uses measured and calculated data on airborne pollutants, particularly nitrogen (ranges between 28 to 43kgN*ha(-1)*yr(-1)) and sulphur (10 to 18kgSO(4)-S*ha(-1)*yr(-1)), in order to assess their long-term (1992 to 2005) effects on bryophytes at the UN-ECE Integrated Monitoring site 'Z?belboden' in Austria. Bryophytes were used as reaction indicators on 20 epiphytic plots using the IM monitoring method and on 14 terrestrial plots using standardised photography. The plots were recorded in the years 1992, 1993, 1998, and 2004/2005. Most species remained stable in terms of their overall population size during the observed period, even though there were rapid turnover rates of a large percentage of species on all investigated plots. Only a few bryophytes (Hypnum cupressiforme, Leucodon sciuroides) responded unambiguously to N and S deposition. Nitrogen deposition had a weak but significant effect on the distribution of bryophyte communities. However, the time shifts in bryophyte communities did not depend on total deposition of N and S. 相似文献
119.
Bastian Herzog Hilde Lemmer Bettina Huber Harald Horn Elisabeth Müller 《Environmental science and pollution research international》2014,21(4):2795-2804
The intensive use of benzotriazoles as corrosion inhibitors for various applications and their application in dishwasher detergents result in an almost omnipresence of benzotriazole (BTri), 4-methyl- and 5-methyl-benzotriazole (4-TTri and 5-TTri, respectively) in aquatic systems. This study aims on the evaluation of the biodegradation potential of activated sludge communities (ASCs) toward the three benzotriazoles regarding aerobic, anoxic, and anaerobic conditions and different nutrients. ASCs were taken from three wastewater treatment plants with different technologies, namely, a membrane bioreactor (MBR-MH), a conventional activated sludge plant CAS-E (intermittent nitrification/denitrification), and CAS-M (two-stage activated sludge treatment) and used for inoculation of biodegradation setups. All ASCs eliminated up to 30 mg L?1 5-TTri and BTri under aerobic conditions within 2–7 and 21–49 days, respectively, but not under anoxic or anaerobic conditions. 4-TTri was refractory at all conditions tested. Significant differences were observed for BTri biodegradation with non-acclimated ASCs from MBR-MH with 21 days, CAS-E with 41 days, and CAS-M with 49 days. Acclimated ASCs removed BTri within 7 days. Furthermore, different carbon and nitrogen concentrations revealed that nitrogen was implicitly required for biodegradation while carbon showed no such effect. The fastest biodegradation occurred for 5-TTri with no need for acclimatization, followed by BTri. BTri showed sludge-specific biodegradation patterns, but, after sludge acclimation, was removed with the same pattern, regardless of the sludge used. Under anaerobic conditions in the presence of different electron acceptors, none of the three compounds showed biological removal. Thus, presumably, aerobic biodegradation is the major removal mechanism in aquatic systems. 相似文献
120.