全文获取类型
收费全文 | 92篇 |
免费 | 2篇 |
专业分类
安全科学 | 1篇 |
环保管理 | 3篇 |
综合类 | 57篇 |
基础理论 | 16篇 |
污染及防治 | 15篇 |
社会与环境 | 1篇 |
灾害及防治 | 1篇 |
出版年
2021年 | 1篇 |
2019年 | 1篇 |
2016年 | 3篇 |
2015年 | 3篇 |
2013年 | 2篇 |
2012年 | 1篇 |
2011年 | 2篇 |
2010年 | 3篇 |
2009年 | 3篇 |
2008年 | 2篇 |
2007年 | 4篇 |
2005年 | 1篇 |
2004年 | 2篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2000年 | 3篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
1975年 | 3篇 |
1970年 | 3篇 |
1965年 | 2篇 |
1964年 | 5篇 |
1963年 | 5篇 |
1962年 | 4篇 |
1961年 | 5篇 |
1960年 | 1篇 |
1957年 | 1篇 |
1955年 | 2篇 |
1954年 | 3篇 |
1951年 | 1篇 |
1950年 | 1篇 |
1943年 | 1篇 |
1932年 | 1篇 |
1931年 | 1篇 |
1930年 | 1篇 |
1921年 | 1篇 |
排序方式: 共有94条查询结果,搜索用时 546 毫秒
81.
Dumitru Ristoiu Urs von Gunten Aurel Mocan Romeo Chira Barbara Siegfried Melinda Haydee Kovacs Sidonia Vancea 《Environmental science and pollution research international》2009,16(Z1):55-65
Background, aim and scope
After the discovery of chloroform in drinking water, an extensive amount of work has been dedicated to the factors influencing the formation of halogenated disinfections by-products (DBPs). The disinfection practice can vary significantly from one country to another. Whereas no disinfectant is added to many water supplies in Switzerland or no disinfectant residual is maintained in the distribution system, high disinfectant doses are applied together with high residual concentrations in the distribution system in other countries such as the USA or some southern European countries and Romania. In the present study, several treatment plants in the Somes river basin in Romania were investigated with regard to chlorine practice and DBP formation (trihalomethanes (THMs)). Laboratory kinetic studies were also performed to investigate whether there is a relationship between raw water dissolved organic matter, residual chlorine, water temperature and THM formation. 相似文献82.
83.
Miroslav Mišík Metka Filipic Armen Nersesyan Katarína Mišíková Siegfried Knasmueller Michael Kundi 《Environmental science and pollution research international》2016,23(15):14762-14770
Recent experiments showed that 5-fluorouracil (5FU), cisplatin (CDDP), etoposide (ET), and imatinib mesylate (IM), which are currently among the most widely used anticancer drugs, cause damage of the genetic material in higher plants. The aim of the present study was to determine whether mixtures of these drugs cause synergistic or antagonistic effects which may have an impact on their environmental safety. Therefore, the effects of binary mixtures of these anticancer drugs on the induction of micronuclei (MN) which reflect structural and numerical chromosomal aberrations were assessed in Tradescantia tetrads. Synergistic/antagonistic effects were determined by comparison with single exposures that would be equally effective in a reference model of independent action. This comparison was performed at two distinct effect sizes. We found clear evidence for synergisms in combination experiments with IM and antagonism in a high-dose experiment with ET and 5FU. Our findings indicate that IM increases the genotoxic effects of other anticancer drugs. The maximal effects which we found were in the range between 19 and 38 % in the excess of effect sizes predicted under independent action. These effects may have an impact on the overall genotoxic activities of untreated hospital waste waters but not on the environment in general as the predicted environmental concentrations of the studied drugs are several orders of magnitude lower as the levels which are required to cause induction of MN in higher plants. 相似文献
84.
Hyun‐Han Kwon Abedalrazq F. Khalil Tobias Siegfried 《Journal of the American Water Resources Association》2008,44(2):436-448
Abstract: It is now widely acknowledged that climate variability modulates the frequency of extreme hydrological events. Traditional methodologies for hydrologic frequency analysis are not devised to account for variation in the exogenous teleconnections. Flood frequency analysis is further plagued by the assumptions of stationary in the causal structure as well as ergodicity. Here, we propose a dynamical hierarchical Bayesian analysis to account for exogenous forcing that govern the summer season rainfall. The precursors for Korean summer rainfall at different frequencies are identified utilizing wavelet and independent component analyses. The sea surface temperatures, the ensemble of rainfall predictions by General Circulation Model, in addition to the typhoon attributes were found to have direct correlation with extreme rainfall events and were used as inputs to the logistic regression model. The model parameters are estimated using Markov Chain Monte Carlo and the resulting posterior distributions associated with individual inputs are analyzed to advance our understanding of the spatiotemporal impact of the teleconnections. Eight rainfall stations throughout Korea are considered in this analysis. We demonstrate that the probability of occurrence of extreme events could be successfully projected at a 90% rate of correct classification of extreme events. 相似文献
85.
86.
87.
88.
89.