全文获取类型
收费全文 | 81篇 |
免费 | 0篇 |
专业分类
废物处理 | 6篇 |
环保管理 | 4篇 |
综合类 | 43篇 |
基础理论 | 9篇 |
污染及防治 | 17篇 |
评价与监测 | 1篇 |
灾害及防治 | 1篇 |
出版年
2022年 | 3篇 |
2018年 | 1篇 |
2016年 | 3篇 |
2014年 | 2篇 |
2013年 | 2篇 |
2012年 | 3篇 |
2011年 | 3篇 |
2010年 | 4篇 |
2009年 | 1篇 |
2008年 | 2篇 |
2005年 | 3篇 |
2004年 | 1篇 |
2001年 | 2篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1982年 | 1篇 |
1979年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1969年 | 2篇 |
1968年 | 1篇 |
1967年 | 3篇 |
1966年 | 4篇 |
1965年 | 1篇 |
1961年 | 2篇 |
1959年 | 2篇 |
1958年 | 2篇 |
1957年 | 1篇 |
1954年 | 3篇 |
1953年 | 1篇 |
1951年 | 4篇 |
1950年 | 1篇 |
1947年 | 1篇 |
1946年 | 1篇 |
1942年 | 1篇 |
排序方式: 共有81条查询结果,搜索用时 15 毫秒
21.
Cai M Xie Z Möller A Yin Z Huang P Cai M Yang H Sturm R He J Ebinghaus R 《Chemosphere》2012,87(9):989-997
Neutral polyfluorinated alkyl substances (PFASs) were measured in high-volume air samples collected on board the research vessel Snow Dragon during the 4th Chinese National Arctic Expedition from the Japan Sea to the Arctic Ocean in 2010. Four volatile and semi-volatile PFASs (fluorotelomer alcohols (FTOHs), fluorotelomer acids (FTAs), perfluoroalkyl sulfonamides (FASAs), and sulfonamidoethanols (FASEs)) were analyzed respectively in the gas and particle phases. FTOHs were the dominant PFASs in the gas phase (61-358 pg m−3), followed by FTAs (5.2-47.9 pg m−3), FASEs (1.9-15.0 pg m−3), and FASAs (0.5-2.1 pg m−3). In the particle phase, the dominant PFAS class was FTOHs (1.0-9.9 pg m−3). The particle-associated fraction followed the general trend of FASEs > FASAs > FTOHs. Compared with other atmospheric PFAS measurements, the ranges of concentrations of ∑FTOH in this study were similar to those reported from Toronto, north America (urban), the northeast Atlantic Ocean, and northern Germany. Significant correlations between FASEs in the gas phase and ambient air temperature indicate that cold surfaces such as sea-ice, snowpack, and surface seawater influence atmospheric FASEs. 相似文献
22.
Majbrit Dela Cruz Renate Müller Bo Svensmark Jakob Skov Pedersen Jan H. Christensen 《Environmental science and pollution research international》2014,21(13):7838-7846
Indoor plants can remove volatile organic compounds (VOCs) from the air. The majority of knowledge comes from laboratory studies where results cannot directly be transferred to real-life settings. The aim of this study was to develop an experimental test system to assess VOC removal by indoor plants which allows for an improved real-life simulation. Parameters such as relative humidity, air exchange rate and VOC concentration are controlled and can be varied to simulate different real-life settings. For example, toluene diffusion through a needle gave concentrations in the range of 0.10–2.35 μg/L with deviations from theoretical values of 3.2–10.5 %. Overall, the system proved to be functional for the assessment of VOC removal by indoor plants with Hedera helix reaching a toluene removal rate of up to 66.5 μg/m2/h. The mode of toluene exposure (semi-dynamic or dynamic) had a significant influence on the removal rate obtained by H. helix. 相似文献
23.
24.
25.
26.
27.
Severo Amanda M. C. Nicácio Pedro H. M. Fook Marcus Vinícius Lia Wellen Renate M. R. 《Journal of Polymers and the Environment》2022,30(9):4014-4022
Journal of Polymers and the Environment - Epoxidized soybean oil (ESO) compounds were cured with methyl tetrahydrophthalic anhydride (MTHPA) as hardener and 2,4,6-tris (dimethylaminomethyl) phenol... 相似文献
28.
Christian Steinberg Markus Haitzer Sebastian Höss Renate Lorenz Rainer Brüggemann B. Kent Burnison 《Environmental Sciences Europe》1997,9(2):64-68
Humic substances, in aqueous bodies primarily fulvic acids, may demonstrate an inhibitory as well as an activating influence on organisms. We present evidence with bacteria-containing algal cultures and with cultures of the nematodeCaenorhabditis elegans. Structural elements of the fulvic acids which may be responsible for such effects are not yet known. Furthermore, the presence of fulvic acids may lead to increases in bioconcentration of xenobiotics. Increase in the toxicity of xenobiotics in the presence of humic substances have also been described. We present studies applying lethal as well as sublethal toxicity endpoints. 相似文献
29.
Peter E. Levy Renate Wendler Marcel van Oijen Melvin G. R. Cannell Peter Millard 《Water, Air, & Soil Pollution: Focus》2005,4(6):67-74
Estimates of the global carbon sink induced by nitrogen enrichment range vary widely, from nearly zero to 2.3 Gt C year?1. It is necessary to reduce this uncertainty if we are to make accurate predictions of the future magnitude of the terrestrial carbon sink. Here, we present a Monte Carlo approach to uncertainty and sensitivity analysis of three ecosystem models, Century, BGC and Hybrid. These models were applied to a coniferous forest ecosystem in Sweden. The best estimate of the change in total carbon content of the ecosystem with the cumulative change in nitrogen deposition over 100 years, ΔCtotal/ΔNdeposition was 20.1 kg C (kg N)?1 using the pooled mean, with a pooled standard deviation of 13.8 kg C (kg N)?1. Variability in parameters accounted for 92% of the total uncertainty in ΔCtotal/ΔNdeposition, and only 8% was attributable to differences between models. The most sensitive parameters were those which controlled the allocation of assimilate between leaves, roots and stem. In particular, an increase in allocation to fine roots led to a large reduction in ΔCtotal/ΔNdeposition in all models, because the fine roots have a very high turnover rate, and extra carbon allocated there is soon lost through mortality and decomposition. 相似文献
30.