全文获取类型
收费全文 | 286篇 |
免费 | 3篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 14篇 |
环保管理 | 20篇 |
综合类 | 40篇 |
基础理论 | 56篇 |
环境理论 | 1篇 |
污染及防治 | 103篇 |
评价与监测 | 36篇 |
社会与环境 | 17篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 8篇 |
2022年 | 9篇 |
2021年 | 21篇 |
2020年 | 4篇 |
2019年 | 4篇 |
2018年 | 11篇 |
2017年 | 12篇 |
2016年 | 19篇 |
2015年 | 13篇 |
2014年 | 11篇 |
2013年 | 28篇 |
2012年 | 21篇 |
2011年 | 19篇 |
2010年 | 12篇 |
2009年 | 17篇 |
2008年 | 13篇 |
2007年 | 18篇 |
2006年 | 13篇 |
2005年 | 3篇 |
2004年 | 8篇 |
2003年 | 6篇 |
2002年 | 8篇 |
2001年 | 1篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1997年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1992年 | 3篇 |
1979年 | 1篇 |
1914年 | 1篇 |
1913年 | 1篇 |
排序方式: 共有291条查询结果,搜索用时 15 毫秒
121.
Dominika Lewicka-Szczebak Adriana Trojanowska Maciej Górka Mariusz-Orion Jędrysek 《Environmental Chemistry Letters》2008,6(3):169-173
We show that sulphur isotopic composition can be a useful tool to discriminate between various sources of sulphate and a tool
for better understanding of the sulphur cycling and mass balance. Our investigations, carried out in a dam reservoir, demonstrate
differences in sulphur biogeochemistry between different seasons, caused by recharge water supply in spring and intensive
sulphate reduction in summer. In the riverine-affected part of the reservoir δ34S(SO4
2−) varied from 4.7 to 5.9‰ in spring, and from 4.1 to 4.6‰ in summer. In the lacustrine-affected part δ34S(SO42−) varied from 4.0 to 5.0‰ in spring, and from 4.5 to 5.4‰ in summer. Diurnal variations of δ34S(SO4
2−) were negligible as compared to seasonal variations. 相似文献
122.
123.
Byron Calgua Anna Carratalà Laura Guerrero-Latorre Adriana de Abreu Corrêa Tamar Kohn Regina Sommer Rosina Girones 《Food and environmental virology》2014,6(4):260-268
Disinfection by low-pressure monochromatic ultraviolet (UVC) radiation (253.7 nm) became an important technique to sanitize drinking water and also wastewater in tertiary treatments. In order to prevent the transmission of waterborne viral diseases, the analysis of the disinfection kinetics and the quantification of infectious viral pathogens and indicators are highly relevant and need to be addressed. The families Adenoviridae and Polyomaviridae comprise human and animal pathogenic viruses that have been also proposed as indicators of fecal contamination in water and as Microbial Source Tracking tools. While it has been previously suggested that dsDNA viruses may be highly resistant to UVC radiation compared to other viruses or bacteria, no information is available on the stability of polyomavirus toward UV irradiation. Here, the inactivation of dsDNA (HAdV2 and JCPyV) and ssRNA (MS2 bacteriophage) viruses was analyzed at increasing UVC fluences. A minor decay of 2-logs was achieved for both infectious JC polyomaviruses (JCPyV) and human adenoviruses 2 (HAdV2) exposed to a UVC fluence of 1,400 J/m2, while a decay of 4-log was observed for MS2 bacteriophages (ssRNA). The present study reveals the high UVC resistance of dsDNA viruses, and the UV fluences needed to efficiently inactivate JCPyV and HAdV2 are predicted. Furthermore, we show that in conjunction with appropriate mathematical models, qPCR data may be used to accurately estimate virus infectivity. 相似文献
124.
We compiled 109 species richness-altitude (SRA) relationships in arthropods to test the hypothesis that identification of shape and robustness of pattern are contingent on the selection of studies included in meta-analysis. We used attributes of their sampling design to distinguish three subsets of data according to stringent, intermediate, and lax selection criteria. We tested (1) whether uncertainty over identification of shape increases as the criteria of inclusion of studies relaxes and (2) whether studies that conform to stringent selection criteria show robustness in SRA patterns to variation in method used to identify shape. We identified the shape of each SRA relationship using statistical and visual methods; data sets that suggested several shapes as equally likely were sorted out by consensus. Arthropods suggested multiple forms in the SRA relationship, with predominance of hump-shaped patterns in the stringent subset. Uncertainty over identification of shape increased after application of intermediate and lax selection criteria. The method of analysis interacted with the quality of basic data to influence the relative distribution of patterns. We concluded that the gathering of large quantities of data is insufficient and that critical evaluation of literature is crucial to infer with confidence the general shape of ecological patterns in meta-analysis. 相似文献
125.
Pedro Reis Costa Sandra Lage Marisa Barata Pedro Pousão-Ferreira 《Marine Biology》2011,158(12):2805-2811
Marine toxins generated by harmful algal blooms can be transferred through the marine food web and ultimately cause massive
deaths of piscivorous predators. However, very few studies have explored the processes of accumulation and biotransformation
of paralytic shellfish toxins (PSTs) within fishes. White seabream (Diplodus sargus) were orally challenged with contaminated cockles (Cerastoderma edule) containing N-sulfocarbamoyl and decarbamoyl toxins and non-contaminated cockles afterwards. Specific PSTs that occurred
in low abundance in cockles (B1 7.6% and dcSTX 1.6% molar fraction) were the only toxins detected in fish viscera possibly
resulting from selective elimination and transformation of the various PSTs. Concentration of toxins progressively increased
in fish viscera throughout the uptake period. Toxins were then rapidly depurated (B1 0.905 day−1, dcSTX 0.467 day−1) when diet was changed to non-toxic cockles. Results indicate conversion of a precursor toxin into B1 which in turn might
be converted into dcSTX at a lower extent. Low accumulation efficiency of 1.7 and 5.0% was calculated to B1 and dcSTX, respectively.
This study contributes to a better understanding of dynamics of PSTs in fish and the fate of these compounds in the marine
food web. 相似文献
126.
Filipa S. Reis Isabel C. F. R. Ferreira Lillian Barros Celestino Santos-Buelga Anabela Martins 《Chemoecology》2011,21(3):151-159
Ectomycorrhizal (ECM) symbiosis plays a major role in nutrient cycling and the functioning of forest ecosystems. Trees with
well-developed ectomycorrhizas are more resistant to environmental stresses such as drought and to biotic stresses such as
root pathogens. The establishment of ECM symbiosis is triggered by signals produced by both partners. These signals lead to
morphological changes and a complex development of specific structures in both the plant root and the fungus. The development
of the ECM fungi, Paxillus involutus and Pisolithus arhizus, in the presence and the absence of the symbiont—Pinus pinaster—was evaluated as well as their antioxidant properties and phenolic compounds composition in response to the symbiotic association.
ECM fungi grew less in the presence of P. pinaster, with P. arhizus being less affected in growth and thus being more adapted to this association. Protocatechuic acid was found only in P. involutus, while P. pinaster roots, both in association and isolated, proved to have other phenolic acids, such as p-hydroxybenzoic and p-coumaric acids. The symbiosis between P. involutus and P. pinaster had no major effects on the symbionts, while the association between P. arhizus and P. pinaster seems to generally decrease the antioxidant effects of both symbionts, despite the increase in p-coumaric and cinnamic acids in the ECM fungi. 相似文献
127.
Sprovieri M Oliveri E Di Leonardo R Romano E Ausili A Gabellini M Barra M Tranchida G Bellanca A Neri R Budillon F Saggiomo R Mazzola S Saggiomo V 《Journal of environmental monitoring : JEM》2011,13(6):1753-1760
The Augusta basin, located in SE Sicily (southern Italy), is a semi-enclosed marine area, labelled as a highly contaminated site. The release of mercury into the harbour seawater and its dispersion to the blue water, make the Augusta basin a potential source of anthropogenic pollution for the Mediterranean Sea. A mass balance was implemented to calculate the HgT budget in the Augusta basin. Results suggest that an average of ~0.073 kmol of HgT is released, by diffusion, on a yearly basis, from sediments to the seawater, with a consequent output of 0.162 kmol y(-1) to coastal and offshore waters; this makes the Augusta area an important contributor of mercury to the Mediterranean Sea. Owing to the geographical location of the Augusta basin, its outflowing shelf-waters are immediately intercepted by the surface Atlantic Ionian Stream (AIS) and mixed with the main gyres of the eastern Mediterranean Sea, thus representing a risk for the large-scale marine system. 相似文献
128.
Gioda A Amaral BS Monteiro IL Saint'Pierre TD 《Journal of environmental monitoring : JEM》2011,13(8):2134-2142
Aerosol particle samples (PM10) were collected at urban, industrial and rural sites located in Rio de Janeiro, Brazil, between October 2008 and September 2009. Aerosol samples for each site were analyzed for total and soluble metals, water-soluble ions, carboxylic acids, and water-soluble organic carbon (WSOC). The results showed that the mean PM10 concentrations were 34 μg m(-3); 47 μg m(-3) and 71 μg m(-3) at the rural, urban and industrial sites, respectively. An increase in the average concentration of these particles due to air stagnation was observed during the period from May to September for all sites, and an increase in hospitalization for respiratory problems was also reported. On average, the anions species represented 4 to 14% of total content, while cations species corresponded to 1 to 11% and 7.5% for WSOC. The overall metal content at the industrial site was nearly the double that at the rural site. The concentrations of the studied species are influenced mainly by site location and the specific characteristics present at each site. However, higher concentrations of some species were observed on particular dates and were probably due to biomass burning and African dust events. The acid/aqueous percentiles showed that the most efficiently extracted metals from the aqueous phase were V and Ni (40%), while Al and Fe represented a lower percentage (<3%). Analysis of the aqueous fraction provides important information about the bioavailability of metals that is associated with the inflammatory process in the lungs. 相似文献
129.
Meneses-Jácome Alexander Ruiz-Colorado Angela Adriana 《Environmental science and pollution research international》2021,28(4):4195-4208
Environmental Science and Pollution Research - The energy potential of high-organic loaded agro-industrial effluents receiving biological treatment is often neglected, particularly in emergent... 相似文献
130.
Lopes Géssica de Oliveira Aragão Walessa Alana Bragança Nascimento Priscila Cunha Bittencourt Leonardo Oliveira Oliveira Ana Carolina Alves Leão Luana Ketlen Reis Alves-Júnior Sergio Melo Pinheiro João de Jesus Viana Crespo-Lopez Maria Elena Lima Rafael Rodrigues 《Environmental science and pollution research international》2021,28(9):10918-10930
Environmental Science and Pollution Research - This study aimed to investigate the effects of lead (Pb) exposure on parotid and submandibular glands through morphological aspects as well as the... 相似文献