全文获取类型
收费全文 | 94篇 |
免费 | 0篇 |
专业分类
安全科学 | 6篇 |
废物处理 | 5篇 |
环保管理 | 8篇 |
综合类 | 11篇 |
基础理论 | 10篇 |
环境理论 | 1篇 |
污染及防治 | 33篇 |
评价与监测 | 16篇 |
社会与环境 | 4篇 |
出版年
2021年 | 1篇 |
2019年 | 1篇 |
2018年 | 1篇 |
2016年 | 2篇 |
2015年 | 7篇 |
2014年 | 3篇 |
2013年 | 10篇 |
2012年 | 3篇 |
2011年 | 2篇 |
2010年 | 3篇 |
2009年 | 3篇 |
2008年 | 9篇 |
2007年 | 8篇 |
2006年 | 6篇 |
2005年 | 4篇 |
2004年 | 2篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 3篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1979年 | 1篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1924年 | 1篇 |
排序方式: 共有94条查询结果,搜索用时 15 毫秒
11.
Anna Elofsson Nora Smedby Jörgen Larsson Jonas Nässén 《Journal of Environmental Policy & Planning》2018,20(5):578-594
Global greenhouse gas emissions from air travel (GHG-A) are on the rise, and projections point towards a rapid growth in the coming decades. This study aims to examine how local government (cities), addresses GHG-A in their Sustainable Energy Action Plans (SEAP). To fulfil this aim, over 200 SEAPs were analysed focusing on three issues: (1) Treatment of GHG-A in local emissions inventories; (2) Policy initiatives within this domain; and (3) The cities’ perceptions of the conflicts of interests. Results showed that more than half of the cities acknowledge the challenge of GHG-A, around one third include GHG-A in their emissions inventories, and more than one quarter have initiated policy interventions. To categorise these interventions, we have added a mode ‘governing by agenda setting’ to an existing analytical framework, ‘Modes of governing’. With their authority limited to the local setting, this mode of governing is a common channel for cities to push changes at higher levels. 相似文献
12.
In order to control and reduce fall-related injuries, particularly among women over the age of 55, a safety management and falls prevention campaign was structured and implemented during 2006–2007 in the small industrial town of Södertälje, Sweden. A local campaign was launched to recruit falls prevention agents, to inform key target groups in the local community, and to educate older people about fall risks. A survey showed that the campaign had a greater impact among professionals with a special relation to fall risk than among the general population. Medical records were used in the evaluation of the outcomes. The results show that between 2005 and 2007 there was a drop of fractures related to falls in the council: an overall drop of 16.7% in the population; among men 55 or older a drop of 12%, among women 55 or older a drop of 15%, among home-dwelling women 55 or older a drop of 5.7% and among women in special accommodation a drop of 44.4%. Expressed in terms of years lost to disability (YLD), the overall drop in hip fractures treated at the local hospital between 2005 and 2007 was 48%. A comparison with National medical records for the same period shows the drop for the intervention area to be much larger than that for Sweden as a whole, although the effect was not statistically significant. The study demonstrates the advantages of a broad, community-based approach to injury prevention. 相似文献
13.
Management by objectives (MBO) is a technique for integrating ecological concerns into national political and administrative
structures. Politicians determine environmental objectives and interim targets to be implemented and assessed by civil servants
in national, regional, and local contexts. Well-developed organizational communication is a prerequisite for MBO. However,
communication-related obstacles can arise when using MBO in public environmental management. We examine communicative aspects
of environmental MBO, looking specifically at the implementation, administration, and assessment of Swedish environmental
quality objectives. Our argument is illustrated by quotations from individual and focus group interviews. We conclude that
communicative problems may arise, because different actors interpret messages from different perspectives, depending on their
agendas, prior knowledge and experience, and positions in the administrative system. It is crucial to recognize the dialogical
aspects of communication, by involving the receiver of a message in a process of response. In addition, the different timeframes
underlying different arguments could contribute to misunderstandings between actors involved in handling environmental issues.
In assessing the achievement of environmental objectives, indicators are used as communicative tools. It is important to investigate
whether and how these indicators contribute to the de- and recontextualization of environmental objectives. 相似文献
14.
Exposure to environmental tobacco smoke (ETS) is an important worldwide public health issue. The present study demonstrates that cigarette smoke can be a major source of endotoxin (lipopolysaccharide, LPS) in indoor environments. Gas-chromatography/mass-spectrometry was used to determine 3-hydroxy fatty acids as markers of endotoxin in air-borne house dust in homes of smokers and non-smokers. Air concentrations of endotoxin were 4-63 times higher in rooms of smoking students than in identical rooms of non-smoking students. The fact that cigarette smoke contains large amounts of endotoxin may partly explain the high prevalence of respiratory disorders among smokers and may also draw attention to a hitherto neglected risk factor of ETS. 相似文献
15.
Zerovalent iron (ZVI) abiotically degrades several chlorinated aliphatic hydrocarbons (CAHs) via reductive dechlorination, which offers perspectives for in situ groundwater remediation applications. The difference in reactivity between ZVI particles is often linked with their specific surface area. However, other parameters may influence the reactivity as well. Earlier, we reported for a set of microscale zerovalent iron (mZVI) particles the disappearance kinetic of different CAHs which were collected under consistent experimental conditions. In the present study, these kinetic data were correlated with the carbon, oxygen and sulfur content of mZVI particles. It was confirmed that not only the specific surface area affects the disappearance kinetic of CAHs, but also the chemical composition of the mZVI particles. The chemical composition, in addition, influences CAHs removal mechanism inducing sorption onto mZVI particles instead of dechlorination. Generally, high disappearance kinetic of CAHs was observed for particles containing less oxygen. A high carbon content, on the other hand, induced nonreactive sorption of the contaminants on the mZVI particles. To obtain efficient remediation of CAHs by mZVI particles, this study suggested that the carbon and oxygen content should not exceed 0.5% and 1% respectively. Finally, the efficiency of the mZVI particles may be improved to some extent by enriching them with sulfur. However, the impact of sulfur content on the reactivity of mZVI particles is less pronounced than that of the carbon and oxygen content. 相似文献
16.
Agnes M. L. Karlson Jon Duberg Nisha H. Motwani Hedvig Hogfors Isabell Klawonn Helle Ploug Jennie Barthel Svedén Andrius Garbaras Brita Sundelin Susanna Hajdu Ulf Larsson Ragnar Elmgren Elena Gorokhova 《Ambio》2015,44(3):413-426
Filamentous, nitrogen-fixing cyanobacteria form extensive summer blooms in the Baltic Sea. Their ability to fix dissolved N2 allows cyanobacteria to circumvent the general summer nitrogen limitation, while also generating a supply of novel bioavailable nitrogen for the food web. However, the fate of the nitrogen fixed by cyanobacteria remains unresolved, as does its importance for secondary production in the Baltic Sea. Here, we synthesize recent experimental and field studies providing strong empirical evidence that cyanobacterial nitrogen is efficiently assimilated and transferred in Baltic food webs via two major pathways: directly by grazing on fresh or decaying cyanobacteria and indirectly through the uptake by other phytoplankton and microbes of bioavailable nitrogen exuded from cyanobacterial cells. This information is an essential step toward guiding nutrient management to minimize noxious blooms without overly reducing secondary production, and ultimately most probably fish production in the Baltic Sea. 相似文献
17.
Thorsten Blenckner Henrik Österblom Per Larsson Agneta Andersson Ragnar Elmgren 《Ambio》2015,44(3):507-515
Ecosystem-based management (EBM) has emerged as the generally agreed strategy for managing ecosystems, with humans as integral parts of the managed system. Human activities have substantial effects on marine ecosystems, through overfishing, eutrophication, toxic pollution, habitat destruction, and climate change. It is important to advance the scientific knowledge of the cumulative, integrative, and interacting effects of these diverse activities, to support effective implementation of EBM. Based on contributions to this special issue of AMBIO, we synthesize the scientific findings into four components: pollution and legal frameworks, ecosystem processes, scale-dependent effects, and innovative tools and methods. We conclude with challenges for the future, and identify the next steps needed for successful implementation of EBM in general and specifically for the Baltic Sea. 相似文献
18.
Catherine Legrand Emil Fridolfsson Mireia Bertos-Fortis Elin Lindehoff Per Larsson Jarone Pinhassi Agneta Andersson 《Ambio》2015,44(3):427-438
The microbial part of the pelagic food web is seldom characterized in models despite its major contribution to biogeochemical cycles. In the Baltic Sea, spatial and temporal high frequency sampling over three years revealed changes in heterotrophic bacteria and phytoplankton coupling (biomass and production) related to hydrographic properties of the ecosystem. Phyto- and bacterioplankton were bottom-up driven in both coastal and offshore areas. Cold winter temperature was essential for phytoplankton to conform to the successional sequence in temperate waters. In terms of annual carbon production, the loss of the spring bloom (diatoms and dinoflagellates) after mild winters tended not to be compensated for by other taxa, not even summer cyanobacteria. These results improve our ability to project Baltic Sea ecosystem response to short- and long-term environmental changes. 相似文献
19.
Polyaromatic hydrocarbons (PAHs) are a group of environmental toxicants mainly emitted from diffuse sources. Fixed wavelength fluorescence of fish bile is a simple screening method that allows environmental monitoring of PAH exposure to fish. One drawback with this method is that the results can be biased by the presence of a so-called inner filter effect. This effect can be reduced by dilution of the bile samples. However, bile samples differ in density and extensive dilution may cause increased measurement error. An alternative method is to adjust the dilution rate to the density of each bile sample. Here, both methods have been applied to bile samples collected from caged rainbow trout. The bile density was estimated using biliverdin. The results show that the variance within experimental groups is reduced when the dilution rate is adjusted to the bile density, resulting in increased statistical power to detect differences when applied for environmental monitoring. 相似文献
20.
Larsson L 《Journal of environmental monitoring : JEM》2008,10(3):301-304
We know little about the health consequences of human exposure to microorganisms in the environment. This may largely be due to the lack of universally accepted, sensitive, reproducible, non-discriminatory, and health relevant methods for characterizing the exposure. In this review, some of the different mass spectrometry methods that have been developed for measuring endotoxin and peptidoglycan from bacteria and mycotoxins from moulds in samples from-mainly damp-indoor environments are discussed. 相似文献