全文获取类型
收费全文 | 285篇 |
免费 | 3篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 15篇 |
废物处理 | 10篇 |
环保管理 | 39篇 |
综合类 | 69篇 |
基础理论 | 40篇 |
污染及防治 | 90篇 |
评价与监测 | 18篇 |
社会与环境 | 9篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 18篇 |
2020年 | 5篇 |
2019年 | 5篇 |
2018年 | 7篇 |
2017年 | 10篇 |
2016年 | 10篇 |
2015年 | 10篇 |
2014年 | 14篇 |
2013年 | 16篇 |
2012年 | 15篇 |
2011年 | 26篇 |
2010年 | 13篇 |
2009年 | 14篇 |
2008年 | 17篇 |
2007年 | 14篇 |
2006年 | 17篇 |
2005年 | 15篇 |
2004年 | 10篇 |
2003年 | 10篇 |
2002年 | 8篇 |
2001年 | 2篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1984年 | 1篇 |
1981年 | 2篇 |
1979年 | 1篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有292条查询结果,搜索用时 15 毫秒
171.
Iftikhar Ahmad Muhammad Javed Akhtar Zahir Ahmad Zahir Muhammad Naveed Birgit Mitter Angela Sessitsch 《Environmental science and pollution research international》2014,21(18):11054-11065
Cadmium usually hampers plant growth, but bacterial inoculation may improve stress tolerance in plants to Cd by involving various mechanisms. The objective was to characterize and identify bacteria that improve plant growth under Cd stress and reduce Cd uptake. Cadmium-tolerant bacteria were isolated from rhizosphere soil, which was irrigated with tannery effluent, and six strains were selected as highly tolerant to Cd, showing minimum inhibitory concentration as 500 mg L?1 or 4.45 mmol L?1. These strains were identified by 16S rRNA gene analysis and functional analysis in regard to plant growth promotion characteristics. To determine their effect on cereal growth under Cd stress, seeds were inoculated with these strains individually and grown in soil contaminated with three Cd levels (0, 40 and 80 mg kg?1). Biomass production, relative water content (RWC), electrolyte leakage (ELL) and tissue Cd concentration were measured. Biomass of both cereals was inhibited strongly when exposed to Cd; however, bacterial inoculation significantly reduced the suppressive effect of Cd on cereal growth and physiology. The bacterial isolates belonged to the genera Klebsiella, Stenotrophomonas, Bacillus and Serratia. Maize was more sensitive than wheat to Cd. Klebsiella sp. strain CIK-502 had the most pronounced effects in promoting maize and wheat growth and lowering Cd uptake under Cd stress. 相似文献
172.
Angela Santilio Patrizia Stefanelli Roberto Dommarco 《Journal of environmental science and health. Part. B》2013,48(6):584-590
A fast, simple and inexpensive method has been developed for the analysis of phenoxy acid herbicides: 2,4-dichlorophenoxyacetic acid (2,4-D), 4-chloro-2-methylphenoxyacetic acid (MCPA), 2-(4-chloro-o-tolyloxy)propionic acid (MCPP), 2-(4-aryloxyphenoxy)propionic acid (Fluazifop) and 2-(4-aryloxyphenoxy)propionic acid (Haloxyfop) in carrots and apples by liquid chromatography coupled to triple quadrupole mass spectrometry (LC/MS/MS). The compounds were analyzed by QuEChERS (quick, easy, cheap, effective, rugged, safe) methodology without cleanup. The recoveries were performed at two spiked levels (0.05 and 0.5 mg/kg) for both matrices with six replicates for each level. The mean recoveries ranged from 70–92% for both apples and carrots. The precision of the method expressed as relative standard deviation (RSD%) was found to be in the range 3–15%. For all compounds, good linearity (r2 > 0.99) was obtained over the range of concentration from 0.05 μ g/mL to 0.5 μ g/mL, corresponding to the pesticide concentrations of 0.05 mg/kg and 0.5 mg/kg, respectively. The determination limits (LOQs) ranged from 0.01 ng/mL to 1.3 ng/mL in solvent, whereas, the LOQs calculated in matrix ranged from 0.05 ng/g to 21.0 ng/g for apples and from 0.06 ng/g to 10.2 ng/g for carrots. The developed methodology combines the advantages of both QuEChERS and LC/MS/MS producing a very rapid, sensitive and cheap method useful for the routine analytical laboratories. 相似文献
173.
Hickman ZA Swindell AL Allan IJ Rhodes AH Hare R Semple KT Reid BJ 《Environmental pollution (Barking, Essex : 1987)》2008,156(3):1041-1045
This study sought to extend validation of a cyclodextrin based extraction method for the assessment of PAH-biodegradation potential to complex multi-contaminant matrices. To this end, four reference materials (RMs) were produced by blending, in different proportions, soils impacted with diesel, lubricating oil and spent oxide. These reference materials had modest ∑PAH (16 US EPA) concentrations that ranged from 5.6 ± 0.5 to 44.4 ± 4.5 mg kg−1. However, extractable petroleum hydrocarbon (EPH) concentrations were comparatively high (up to 2520 ± 204 mg kg−1). To complement these RMs, two further soils from a municipal gas plant (MGP) with highly elevated concentration of PAHs ranging from 877 ± 52 to 2620 ± 344 mg kg−1 were also tested. Results showed, regardless of matrix complexity, that PAH biodegradation within the four RM substrates, and two MGP soils correlated well with biodegradation predicted by hydroxypropyl-β-cyclodextrin (HPCD) extraction. 相似文献
174.
The extraction of bitumen from the oil sands in Canada releases toxic naphthenic acids into the process-affected waters. The development of an ideal analytical method for quantifying naphthenic acids (general formula C(n)H(2n+Z)O(2)) has been impeded by the complexity of these mixtures and the challenges of differentiating naphthenic acids from other naturally-occurring organic acids. The oil sands industry standard FTIR method was compared with a newly-developed GC-MS method. Naphthenic acids concentrations were measured in extracts of surface and ground waters from locations within the vicinity of and away from the oil sands deposits and in extracts of process-affected waters. In all but one case, FTIR measurements of naphthenic acids concentrations were greater than those determined by GC-MS. The detection limit of the GC-MS method was 0.01 mg L(-1) compared to 1 mg L(-1) for the FTIR method. The results indicated that the GC-MS method is more selective for naphthenic acids, and that the FTIR method overestimates their concentrations. 相似文献
175.
Anita T. Morzillo Angela G. Mertig Jeffrey W. Hollister Nathan Garner Jianguo Liu 《Environmental management》2010,45(6):1299-1311
There is global interest in recovering locally extirpated carnivore species. Successful efforts to recover Louisiana black
bear in Louisiana have prompted interest in recovery throughout the species’ historical range. We evaluated support for three
potential black bear recovery strategies prior to public release of a black bear conservation and management plan for eastern
Texas, United States. Data were collected from 1,006 residents living in proximity to potential recovery locations, particularly
Big Thicket National Preserve. In addition to traditional logistic regression analysis, we used conditional probability analysis
to statistically and visually evaluate probabilities of public support for potential black bear recovery strategies based
on socioeconomic characteristics. Allowing black bears to repopulate the region on their own (i.e., without active reintroduction)
was the recovery strategy with the greatest probability of acceptance. Recovery strategy acceptance was influenced by many
socioeconomic factors. Older and long-time local residents were most likely to want to exclude black bears from the area.
Concern about the problems that black bears may cause was the only variable significantly related to support or non-support
across all strategies. Lack of personal knowledge about black bears was the most frequent reason for uncertainty about preferred
strategy. In order to reduce local uncertainty about possible recovery strategies, we suggest that wildlife managers focus
outreach efforts on providing local residents with general information about black bears, as well as information pertinent
to minimizing the potential for human–black bear conflict. 相似文献
176.
Katherine Seto Grantly R. Galland Alice McDonald Angela Abolhassani Kamal Azmi Hussain Sinan Trent Timmiss Megan Bailey Quentin Hanich 《Ambio》2021,50(1):242
Resource allocation is a fundamental and challenging component of common pool resource governance, particularly transboundary fisheries. We highlight the growing importance of allocation in fisheries governance, comparing approaches of the five tuna Regional Fisheries Management Organizations (tRFMOs). We find all tRFMOs except one have defined resources for allocation and outlined principles to guide allocation based on equity, citizenship, and legitimacy. However, all fall short of applying these principles in assigning fish resources. Most tRFMOs rely on historical catch or effort, while equity principles rarely determine dedicated rights. Further, the current system of annual negotiations reduces certainty, trust, and transparency, counteracting many benefits asserted by rights-based management proponents. We suggest one means of gaining traction may be to shift conversations from allocative rights toward weighting of principles already identified by most tRFMOs. Incorporating principles into resource allocation remains a major opportunity, with important implications for current and future access to fish.Electronic supplementary materialThe online version of this article (10.1007/s13280-020-01371-3) contains supplementary material, which is available to authorized users. 相似文献
177.
178.
Wegner Lilian Kinoshita Angela de Paiva Fabio Friol Guedes de Almeida Soares Pedro Negraes Santana William Pinto Edilson M. 《Journal of Material Cycles and Waste Management》2021,23(5):1831-1837
Journal of Material Cycles and Waste Management - The polysaccharide chitin (CHIT), extracted mainly from exoskeletons of crustaceans, can be obtained from shrimp fishery waste. It is the source of... 相似文献
179.
180.
Evaluating seasonal dynamics of bacterial communities in marine fish aquaculture: a preliminary study before applying phage therapy 总被引:1,自引:0,他引:1
Pereira C Salvador S Arrojado C Silva Y Santos AL Cunha A Gomes NC Gomes N Almeida A 《Journal of environmental monitoring : JEM》2011,13(4):1053-1058
The increasing problem of antibiotic resistance in common pathogenic bacteria and the concern about the spreading of antibiotics in the environment bring the need to find new methods to control fish pathogens. Phage therapy represents a potential alternative to antibiotics, but its use in aquaculture requires a detailed understanding of bacterial communities, namely of fish pathogenic bacteria. Therefore, in this study the seasonal dynamics of the overall bacterial communities, microbiological water quality and disease-causing bacteria were followed in a marine aquaculture system of Ria de Aveiro (Portugal). Analysis of the bacterial diversity of the water samples by denaturing gradient gel electrophoresis (DGGE) of 16S rRNA gene fragments indicates that the bacterial community structure varied seasonally, showing a higher complexity during the warm season. The diversity of the main fish pathogenic bacteria, assessed by DGGE targeting the Vibrio genus, showed lower seasonal variation, with new dominating populations appearing mainly in the spring. Bacterial indicators, faecal coliforms and enterococci, enumerated by the filter-membrane method, also varied seasonally. The fluorescent in situ hybridization (FISH) results showed that the specific groups of bacteria varied during the study period and that the non-indigenous Enterobactereaceae family was the most abundant group followed by Vibrio and Aeromonas. The seasonal variation detected in terms of density and structure of total and pathogenic bacterial communities demonstrates the need for a careful monitoring of water through the year in order to select the suitable phages to inactivate fish pathogenic bacteria. The spring season seems to be the critical time period when phage therapy should be applied. 相似文献