全文获取类型
收费全文 | 402篇 |
免费 | 9篇 |
国内免费 | 6篇 |
专业分类
安全科学 | 23篇 |
废物处理 | 11篇 |
环保管理 | 60篇 |
综合类 | 62篇 |
基础理论 | 112篇 |
环境理论 | 1篇 |
污染及防治 | 96篇 |
评价与监测 | 40篇 |
社会与环境 | 9篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 4篇 |
2022年 | 14篇 |
2021年 | 12篇 |
2020年 | 14篇 |
2019年 | 14篇 |
2018年 | 14篇 |
2017年 | 17篇 |
2016年 | 17篇 |
2015年 | 11篇 |
2014年 | 21篇 |
2013年 | 39篇 |
2012年 | 18篇 |
2011年 | 29篇 |
2010年 | 20篇 |
2009年 | 22篇 |
2008年 | 27篇 |
2007年 | 18篇 |
2006年 | 15篇 |
2005年 | 14篇 |
2004年 | 12篇 |
2003年 | 8篇 |
2002年 | 9篇 |
2001年 | 9篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1997年 | 3篇 |
1995年 | 2篇 |
1994年 | 4篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 1篇 |
1989年 | 3篇 |
1986年 | 2篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1973年 | 1篇 |
1968年 | 1篇 |
1961年 | 2篇 |
1960年 | 1篇 |
1954年 | 1篇 |
1937年 | 1篇 |
1936年 | 1篇 |
排序方式: 共有417条查询结果,搜索用时 15 毫秒
321.
O Klebercz WM Mayes AD Ánton V Feigl AP Jarvis K Gruiz 《Journal of environmental monitoring : JEM》2012,14(8):2063-2071
An integrated assessment of biological activity and ecotoxicity of fluvial sediments in the Marcal river catchment (3078 km(2)), western Hungary, is presented following the accidental spill of bauxite processing residue (red mud) in Ajka. Red mud contaminated sediments are characterised by elevated pH, elevated trace element concentrations (e.g. As, Co, Cr, V), high exchangeable Na, and induce an adverse effect on test species across a range of trophic levels. While background contamination of the river system is highlighted by adverse effects on some test species at sites unaffected by red mud, the most pronounced toxic effects apparent in Vibrio fischeri bioluminescence inhibition, Lemna minor bioassay and Sinapis alba root and shoot growth occur at red mud depositional hotspots in the lower Torna Creek and upper Marcal. Heterocypris incongruens bioassays show no clear patterns, although the most red mud-rich sites do exert an adverse effect. Red mud does however appear to induce an increase in the density of aerobic and facultative anaerobic bacterial communities when compared with unaffected sediments and reference sites. Given the volume of material released in the spill, it is encouraging that the signal of the red mud on aquatic biota is visible at a relatively small number of sites. Gypsum-affected samples appear to induce an adverse effect in some bioassays (Sinapis alba and Heterocypris incongruens), which may be a feature of fine grain size, limited nutrient supply and greater availability of trace contaminants in the channel reaches that are subject to intense gypsum dosing. Implications for monitoring and management of the spill are discussed. 相似文献
322.
Joanna Ewa Przytarska Adam Sokołowski Maciej Wołowicz Herman Hummel Jeroen Jansen 《Environmental monitoring and assessment》2010,166(1-4):461-476
Mussels from Mytilus edulis complex were used as biomonitors of the trace metals Fe, Mn, Pb, Zn, and Cu at 17 sampling sites to assess the relative bioavailability of metals in coastal waters around the European continent. Because accumulated metal concentrations in a given area can differ temporally, data were corrected for the effect of season before large-scale spatial comparisons were made. The highest concentration of Fe was noted in the North Sea and of Mn in the Baltic. Increased tissue concentrations of Pb were recorded in the mussels from the Bay of Biscay and the Baltic Sea. Low concentrations of metals were determined in the mussels from the Mediterranean Sea and the Northern Baltic. Relatively low geographic variations of Cu and Zn indicate that mussels are able to partially regulate accumulated body concentrations, which means Cu and Zn are, to some extent, independent of environmental concentrations. 相似文献
323.
Haibo Niu Adam Drozdowski Tahir Husain Brian Veitch Neil Bose Kenneth Lee 《Environmental Modeling and Assessment》2009,14(5):585-594
The benthic boundary layer transport (bblt) model was widely used in the Atlantic Canadian offshore region to assess the potential
impact zones from drilling wastes discharges from offshore oil and gas drilling. The current version of the bblt uses a single-class
settling velocity scenario, which may affect its performance, as settling velocity is size, shape, and material dependent.
In this study, the effects of settling velocity on bblt predictions were assessed by replacing this single-class settling
velocity scenario with a multi-class size-dependent settling velocity scenario. The new scenario was used in a hypothetical
study to simulate the dispersion of barite and fine-grained drilling cuttings. The study showed that the effects of settling
velocity on bblt predictions are spatial, temporal, and material dependent. 相似文献
324.
Kido MH Mundt CW Montgomery KN Asquith A Goodale DW Kaneshiro KY 《Environmental management》2008,42(4):658-666
Monitoring the complex environmental relationships and feedbacks of ecosystems on catchment (or mountain)-to-sea scales is essential for social systems to effectively deal with the escalating impacts of expanding human populations globally on watersheds. However, synthesis of emerging technologies into a robust observing platform for the monitoring of coupled human-natural environments on extended spatial scales has been slow to develop. For this purpose, the authors produced a new cyberinfrastructure for environmental monitoring which successfully merged the use of wireless sensor technologies, grid computing with three-dimensional (3D) geospatial data visualization/exploration, and a secured internet portal user interface, into a working prototype for monitoring mountain-to-sea environments in the high Hawaiian Islands. A use-case example is described in which native Hawaiian residents of Waipa Valley (Kauai) utilized the technology to monitor the effects of regional weather variation on surface water quality/quantity response, to better understand their local hydrologic cycle, monitor agricultural water use, and mitigate the effects of lowland flooding. 相似文献
325.
Management of public lands occurs today with high levels of scrutiny and controversy. To succeed, managers seek the support,
involvement, and endorsement of the public. This study examines trust as an indicator of managerial success and attempts to
identify and measure the components that most influence it. A review of trust literature yielded 14 attributes that were hypothesized
to contribute to trust, grouped into the three dimensions of Shared Norms and Values, Willingness to Endorse, and Perceived
Efficacy. Operationalizing these attributes and dimensions, a telephone survey was administered to a sample of Montana, USA,
residents living adjacent to the Bitterroot National Forest (n = 1,152). Each of the attributes was measured in the context of federal lands fire and fuel management. Structural equation
modeling showed that all 14 attributes were found to be influential contributors to levels of trust. Results suggest that
if managers are to maintain or increase levels of public trust, they need to consider each of trust’s attributes as they make
social, ecological, and economic resource decisions. 相似文献
326.
With record-breaking tourist visits in Kenya in 2005–2006, communities near the country’s renowned protected areas must undertake
or revisit planning efforts to conserve and enhance the region’s natural, social, and economic resources. This article examines
the differences between two stakeholder groups in the Samburu region of central Kenya: (1) protected area leadership and staff;
and (2) members of the communities adjacent to the protected areas. Based on the results and analysis of 30 in-depth interviews,
the authors identify differences between protected area staff and their community members regarding perceptions about communication
between the two groups, and the economic benefits of tourism. The different stakeholders agreed, however, about challenges
related to equitable distribution of tourism-based employment and revenue. The results indicate a need to reach consensus
about what constitutes sufficient communication between national reserves and their community, and to what extent tourism-related
revenue and employment should be distributed within the region. A discussion of the potential role of indicators and standards
to make such decisions is presented. 相似文献
327.
Jose M. Adam Author Vitae Francisco J. Pallarés Author Vitae Author Vitae 《Journal of Safety Research》2009,40(4):293-299
Problem
One of the phases with the highest risk of falls from a height in the construction of a building is during the floor slab formwork stage. This paper analyzes this particular risk, as well as the most frequently used fall-protection systems.Method
A survey was carried out to define the current situation in Spain with regard to falls from a height during floor slab formwork and the fall-protection systems used to prevent such a risk.Results
The results of the survey clarified the current situation in Spain with regard to this risk, and made it clear that there is considerable risk of falling from a height during the floor slab formwork stage.Discussion
All the safety systems analyzed presented a series of weak points that should be studied in detail before they can be used on building sites.Impact on industry
The risk of falling associated with floor slab formwork and the most frequently used protection systems are analyzed. As no research had been carried out to date on this type of risk, we consider the research presented in this article to be a pioneer in the field. 相似文献328.
Adam S. Markowski M. Sam Mannan 《Journal of Loss Prevention in the Process Industries》2009,22(6):921-927
This paper explores the application of the fuzzy logic for risk assessment of major hazards connected with transportation of flammable substances in long pipelines. As a basis for risk assessment, the framework of the fuzzy Layer of Protection Analysis (fLOPA) was used. fLOPA presents a new approach to risk assessment based on two assumptions: 1. different effects of the layer of protection functions on particular elements of the risks (frequency and severity of consequence), and 2. the application of fuzzy logic system (FLS) composed of three elements: fuzzification, inference process and defuzzification. A further calculation follows LOPA methodology with the use of fuzzy logic system where fuzzy risk matrix is used for risk assessment. A typical case study comprising section of a long pipeline failure is performed and a comparison between the classical LOPA approach and fuzzy approach is made. 相似文献
329.
330.
Fabrice Cazier Paul Genevray Dorothée Dewaele Habiba Nouali Anthony Verdin Frédéric Ledoux Adam Hachimi Lucie Courcot Sylvain Billet Saâd Bouhsin Pirouz Shirali Guillaume Garçon Dominique Courcot 《环境科学学报(英文版)》2016,28(6):45-56
Atmospheric aerosol samples(PM_(2.5–0.3), i.e., atmospheric particles ranging from 0.3 to2.5 μm) were collected during two periods: spring–summer 2008 and autumn–winter 2008–2009, using high volume samplers equipped with cascade impactors. Two sites located in the Northern France were compared in this study: a highly industrialised city(Dunkirk) and a rural site(Rubrouck). Physicochemical analysis of particulate matter(PM) was undertaken to propose parameters that could be used to distinguish the various sources and to exhibit seasonal variations but also to provide knowledge of chemical element composition for the interpretation of future toxicological studies. The study showed that PM2.5–0.3concentration in the atmosphere of the rural area remains stable along the year and was significantly lower than in the urban or industrial ones, for which concentrations increase during winter.High concentrations of polycyclic aromatic hydrocarbons(PAHs), dioxins, furans and dioxin like polychlorinated biphenyls(DL-PCBs), generated by industrial activities, traffic and municipal wastes incineration were detected in the samples. Specific criteria like Carbon Preference Index(CPI) and Combustion PAHs/Total PAHs ratio(CPAHs/TPAHs) were used to identify the possible sources of atmospheric pollution. They revealed that paraffins are mainly emitted by biogenic sources in spring–summer whereas as in the case of PAHs, they have numerous anthropogenic emission sources in autumn-winter(mainly from traffic and domestic heating). 相似文献