全文获取类型
收费全文 | 134篇 |
免费 | 1篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 6篇 |
废物处理 | 5篇 |
环保管理 | 5篇 |
综合类 | 32篇 |
基础理论 | 21篇 |
污染及防治 | 49篇 |
评价与监测 | 8篇 |
社会与环境 | 11篇 |
出版年
2023年 | 1篇 |
2022年 | 5篇 |
2021年 | 3篇 |
2020年 | 1篇 |
2019年 | 5篇 |
2018年 | 11篇 |
2017年 | 6篇 |
2016年 | 7篇 |
2015年 | 7篇 |
2014年 | 13篇 |
2013年 | 12篇 |
2012年 | 8篇 |
2011年 | 17篇 |
2010年 | 1篇 |
2009年 | 5篇 |
2008年 | 9篇 |
2007年 | 6篇 |
2006年 | 4篇 |
2005年 | 7篇 |
2004年 | 3篇 |
2002年 | 4篇 |
2001年 | 1篇 |
1995年 | 1篇 |
排序方式: 共有137条查询结果,搜索用时 31 毫秒
91.
Martínez-de la Puente J Merino S Tomás G Moreno J Morales J Lobato E Martínez J 《Die Naturwissenschaften》2011,98(2):99-106
Parasites are undoubtedly a biotic factor that produces stress. Heat shock proteins (HSPs) are important molecules buffering cellular damage under adverse conditions. During the breeding season, blue tit Cyanistes caeruleus (L.) adults are affected by blood parasites, nest-dwelling parasites and biting flies, potentially affecting their HSP-mediated responses. Here, we treated females with primaquine to reduce blood parasites and fumigated nests with permethrin to reduce nest-dwelling parasites to test whether these treatments affect HSP60 level during the breeding season. Medicated females, but not controls, had a significant reduction of the intensity of infection by Haemoproteus spp. blood parasites. However, final intensity of infection did not differ significantly between groups, and we did not find an effect of medication on change in HSP60 level. Fumigation reduced the abundance of nest-dwelling parasites (mites, fleas and blowfly larvae) and engorged biting midges in nests. Females breeding in non-fumigated nests increased HSP60 levels during the season more than those breeding in fumigated nests. Furthermore, the change in HSP60 level was positively correlated with the abundance of biting midges. These results show how infections by nest ectoparasites during the breeding period can increase the level of HSPs and suggest that biting midges impose physiological costs on breeding female blue tits. Although plausible, the alternative that biting midges prefer to feed on more stressed birds is poorly supported by previous studies. 相似文献
92.
Fabio Gosetti Bianca Bolfi Ugo Chiuminatto Marcello Manfredi Elisa Robotti Emilio Marengo 《Environmental Chemistry Letters》2018,16(2):581-590
Alpha-cypermethrin is a broad-spectrum insecticide widely used in the treatment of rice crops, mainly commercialized as a CONTEST® formulation. The photodegradation of alpha-cypermethrin and of the commercial formulation has not yet been systematically investigated in paddy water under natural conditions. Here, paddy water solutions of alpha-cypermethrin and CONTEST® formulation at 5.0 mg L?1 were irradiated under simulated sunlight for 10 days. Hydrolysis experiments were carried out on the same solutions preserved in the dark. Analysis by ultra-high-performance liquid chromatography–tandem mass spectrometry was developed for the identification of photodegradation products. Results show that degradation of pure alpha-cypermethrin and the formulation counterpart produces both common and different photodegradation products. Five out eleven photodegradation products were identified for the first time, in particular three in the alpha-cypermethrin paddy water solution and four in the formulation. Our findings underline the importance of carrying out photodegradation experiments directly on the commercial formulation, since degradation products could be different from the pure insecticide. 相似文献
93.
Elisa De Laurentiis Marco Minella Valter Maurino Claudio Minero Davide Vione 《Environmental science and pollution research international》2014,21(20):11770-11780
Information concerning the link between surface-water photochemistry and climate is presently very scarce as only a few studies have been dedicated to the subject. On the basis of the limited knowledge that is currently available, the present inferences can be made as follows: (1) Warming can cause enhanced leaching of ionic solutes from the catchments to surface waters, including cations and more biologically labile anions such as sulphate. Preferential sulphate biodegradation followed by removal as organic sulphides in sediment could increase alkalinity, favouring the generation of the carbonate radical, CO3 ·?. However, this phenomenon would be easily offset by fluctuations of the dissolved organic carbon (DOC), which is strongly anticorrelated with CO3 ·?. Therefore, obtaining insight into DOC evolution is a key issue in understanding the link between photochemistry and climate. (2) Climate change could exacerbate water scarcity in the dry season in some regions. Fluctuations in the water column could deeply alter photochemistry that is usually favoured in shallower waters. However, the way water is lost would strongly affect the prevailing photoinduced processes. Water outflow without important changes in solute concentration would mostly favour reactions induced by the hydroxyl and carbonate radicals (·OH and CO3 ·?). In contrast, evaporative concentration would enhance reactions mediated by singlet oxygen (1O2) and by the triplet states of chromophoric dissolved organic matter (3CDOM*). (3) In a warmer climate, the summer stratification period of lakes would last longer, thereby enhancing photochemical reactions in the epilimnion but at the same time keeping the hypolimnion water in the dark for longer periods. 相似文献
94.
Elisa Venturini Ivano Vassura Simona Raffo Laura Ferroni Elena Bernardi Fabrizio Passarini 《Environmental science and pollution research international》2014,21(20):11634-11648
In order to determine the pollution sources in a suburban area and identify the main direction of their origin, PM2.5 was collected with samplers coupled with a wind select sensor and then subjected to Positive Matrix Factorization (PMF) analysis. In each sample, soluble ions, organic carbon, elemental carbon, levoglucosan, metals, and Polycyclic Aromatic Hydrocarbons (PAHs) were determined. PMF results identified six main sources affecting the area: natural gas home appliances, motor vehicles, regional transport, biomass combustion, manufacturing activities, and secondary aerosol. The connection of factor temporal trends with other parameters (i.e., temperature, PM2.5 concentration, and photochemical processes) confirms factor attributions. PMF analysis indicated that the main source of PM2.5 in the area is secondary aerosol. This should be mainly due to regional contributions, owing to both the secondary nature of the source itself and the higher concentration registered in inland air masses. The motor vehicle emission source contribution is also important. This source likely has a prevalent local origin. The most toxic determined components, i.e., PAHs, Cd, Pb, and Ni, are mainly due to vehicular traffic. Even if this is not the main source in the study area, it is the one of greatest concern. The application of PMF analysis to PM2.5 collected with this new sampling technique made it possible to obtain more detailed results on the sources affecting the area compared to a classical PMF analysis. 相似文献
95.
Michela Sturini Andrea Speltini Federica Maraschi Luca Pretali Antonella Profumo Elisa Fasani Angelo Albini 《Environmental science and pollution research international》2014,21(23):13215-13221
The photodegradation fate of widely used fluoroquinolone (FQ) drugs has been studied both at the water–soil interface and in soil at actual concentrations (500 ng g?1) under natural solar light. Both human and veterinary drugs have been examined, namely ciprofloxacin, danofloxacin, enrofloxacin, levofloxacin, marbofloxacin and moxifloxacin. After spiking and irradiation, samples were submitted to microwave-assisted extraction and analyzed by high-performance liquid chromatography coupled to fluorescence detection (HPLC–FD). FQs degradation was faster in aqueous soil suspension than in neat soil (but lower than in “clean” water). A number of byproducts were identified by HPLC electrospray ionization tandem mass spectrometry after a post-extraction cleanup based on a molecularly imprinted polymer phase, for a more accurate detection. The distribution in the suspension was intermediate between those observed in soils and in aqueous solutions. 相似文献
96.
Lucia Bongiorni Federica Fiorentino Rocco Auriemma Fabrizio Bernardi Aubry Elisa Camatti Federica Camin Federica Nasi Marco Pansera Luca Ziller Jacques Grall 《Environmental science and pollution research international》2016,23(13):12725-12738
Carbon and nitrogen stable isotope analysis was used to examine the food web of the Mar Piccolo of Taranto, a coastal basin experiencing several anthropogenic impacts. Main food sources (algal detritus, seaweeds, particulate organic matter (POM) and sediment organic matter (SOM)) and benthic and pelagic consumers were collected during two contrasting seasons (June and April), at four sites distributed over two inlets, and characterized by different level of confinements, anthropogenic inputs and the presence of mussels farming. δ13C values of organic sources revealed an important contribution of POM to both planktonic and benthic pathways, as well as the influence of terrigenous inputs within both inlets, probably due to high seasonal land runoff. Although δ13C of both sources and consumers varied little between sampling sites and dates, δ15N spatial variability was higher and clearly reflected the organic enrichment in the second inlet as well as the uptake of anthropogenically derived material by benthic consumers. On the other hand, within the first inlet, the isotopic composition of consumers did not change in response to chemical contamination. However, the impact of polluted sediments near the Navy Arsenal in the first inlet was detectable at the level of the macrobenthic trophic structure, showing high dominance of motile, upper level consumers capable to face transient conditions and the reduction of the more resident deposit feeders. We therefore underline the great potential of matching stable isotope analysis with quantitative studies of community structure to assess the effects of multiple anthropogenic stressors. 相似文献
97.
A pilot plant anaerobic/anoxic/oxic (A2/O) system fed with domestic wastewater was operated to examine the effect of varying different types of carbon source (acetic acid, propionic acid, and glucose), added as a complement to the wastewater, on the (1) process performance and (2) microbial population. The operational condition that lead to a significant removal of total nitrogen (82%) was achieved with acetic acid. When the complementary carbon source was propionic acid, an improved removal efficiency of orthophosphate (97%) was observed. Because this finding was concurrent with higher polyphosphate-accumulating organism (PAO) population fractions detected using fluorescent in situ hybridization analysis (41.9 +/- 3.0%), it suggests that members of PAO populations that were able to reduce nitrate gained importance over PAO members that could not, thus improving the denitrifying phosphorus removal. 相似文献
98.
99.
Luca Paoli Silvana Munzi Elisa Fiorini Carlo Gaggi Stefano Loppi 《Environmental science and pollution research international》2013,20(1):250-259
This study investigated the influence of angular exposure and distance from vehicular traffic on the diversity of epiphytic lichens and the bioaccumulation of traffic-related elements in a town of central Italy. An Index of Lichen Diversity (ILD) was calculated on the street-facing and the opposite side of road-lining trees and in a urban park 250 m away, and the content of selected trace elements (Al, Ba, Ce, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sb, V, and Zn) was determined in samples of the lichen Punctelia borreri (Sm.) Krog growing on tree bark, both on the exposed and opposite sides. ILD increases with distance from traffic emissions. However, at the site with vehicle traffic, non-nitrophilous lichens decreased while nitrophilous ones increased. The concentration of the traffic-related elements Ba, Cr, Cu, Mn, Sb, and Zn accumulated in thalli of P. borreri was higher on roadside trees than in trees from the urban park. ILD was not affected by the angular exposure to the road and the bioaccumulation of traffic-related elements was similar in lichens from the side of the bole exposed to traffic emissions and particulate resuspension and from the opposite side. The angular exposure in respect to the traffic source does not influence trace element accumulation. These results are important when using lichens for biomonitoring purposes, both for planning future studies and for the reliability of the interpretation of past surveys that do not report information about the angular exposure of the collected lichen material. 相似文献
100.