全文获取类型
收费全文 | 151篇 |
免费 | 0篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 8篇 |
环保管理 | 9篇 |
综合类 | 30篇 |
基础理论 | 20篇 |
污染及防治 | 65篇 |
评价与监测 | 12篇 |
社会与环境 | 7篇 |
出版年
2024年 | 1篇 |
2022年 | 4篇 |
2021年 | 7篇 |
2020年 | 3篇 |
2019年 | 3篇 |
2018年 | 7篇 |
2017年 | 8篇 |
2016年 | 4篇 |
2015年 | 2篇 |
2014年 | 10篇 |
2013年 | 8篇 |
2012年 | 14篇 |
2011年 | 8篇 |
2010年 | 10篇 |
2009年 | 8篇 |
2008年 | 17篇 |
2007年 | 9篇 |
2006年 | 3篇 |
2005年 | 4篇 |
2004年 | 5篇 |
2003年 | 4篇 |
2002年 | 4篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1998年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有152条查询结果,搜索用时 437 毫秒
111.
Azo-dyes photocatalytic degradation in aqueous suspension of TiO2 under solar irradiation 总被引:3,自引:0,他引:3
Augugliaro V Baiocchi C Prevot AB García-López E Loddo V Malato S Marcí G Palmisano L Pazzi M Pramauro E 《Chemosphere》2002,49(10):1223-1230
The photodegradation of two common and very stable azo-dyes, i.e. methyl-orange (C14H14N3SO3Na) and orange II (C16H11N2SO4Na), is reported. The photocatalytic oxidation was carried out in aqueous suspensions of polycrystalline TiO2 irradiated by sunlight. Compound parabolic collectors, installed at the “Plataforma Solar de Almería” (PSA, Spain) were used as the photoreactors and two identical reacting systems allowed to perform photoreactivity runs for the two dyes at the same time and under the same irradiation conditions. The disappearance of colour and substrates together with the abatement of total organic carbon content was monitored. The main sulfonate-containing intermediates were found to be in lower number in respect to those obtained under artificial irradiation. In particular there were no more evidence of the presence of hydroxylated transients. The dependence of dye photooxidation rate on: (i) substrate concentration; (ii) catalyst amount; and (iii) initial pH was investigated. The influence of the presence of strong oxidant species (H2O2, S2O82−) and some ions (Cl−, SO42−) on the process was also studied. 相似文献
112.
Alessandra DiGiacomo David W.-L. Wu Peter Lenkic Bud Fraser Jiaying Zhao Alan Kingstone 《Journal of Environmental Planning and Management》2018,61(2):309-331
Increasing volumes of solid waste, implicated in environmental pollution and health problems, are central to the current environmental crisis. In two randomized field experiments, we demonstrate that convenience dramatically boosts recycling and composting rates in multi-family dwellings and university residences. When compost bins were placed on each floor in a multi-family residence, instead of on the ground floor, composting rates increased by 70%, diverting 27 kilograms of compost from the landfill per unit per year. When recycling stations were placed just meters from suites in student residences, instead of in the basement, recycling increased by 147% (container), and 137% (paper), and composting increased by 139%, diverting 23, 22, and 14 kilograms of containers, paper, and compost, respectively, from the landfill per person per year. Simply making recycling and composting convenient can significantly increase waste diversion, and as such this single intervention has important implications for waste management and environmental policy. 相似文献
113.
Using environmental accounts to promote sustainable development: Experience in southern Africa 总被引:1,自引:0,他引:1
Environmental accounts bring together economic and environmental information in a common framework to measure the contribution of the environment to the economy and the impact of the economy on the environment. They enable governments to set priorities, monitor economic policies more precisely, enact more effective environmental regulations and resource management strategies, and design more efficient market instruments for environmental policies. This article uses examples from the regional environmental accounting programme in southern Africa to demonstrate the usefulness of environmental accounts to policy-making and natural resource management. The examples address the contribution of natural capital endowments (minerals and fisheries) to sustainable development in Botswana and Namibia; the economic importance of non-market forest goods and services in South Africa; and the socio-economic impact of current water allocation and pricing policies in Botswana, Namibia and South Africa. While there are many additional policy applications, these few provide a powerful argument for the use of environmental accounts in all countries. 相似文献
114.
Alessandra Manganelli 《Journal of Environmental Policy & Planning》2020,22(3):366-380
ABSTRACTThis paper revisits the development of Toronto and Brussels’ local food policies by analysing reflexivity and co-learning as important dimensions within a Hybrid Governance Approach (HGA); it approaches the interaction between four forms of governance (bottom-up, networked, state, market-led) and the tensions between them as hybrid dynamics. Within this approach, reflexivity refers to the positionality of agents, i.e. to the ways local food actors embody as well as reflect on and reconsider their principles and practices through time. Closely related to reflexivity, co-learning involves agential interactions to co-construct enabling food policy delivery systems. The HGA is mobilised to understand the ways in which reflexive capacities, as well as co-learning, take place in the two cases and how they lay the basis of particular modes of (de)institutionalisation. Learning from the two cases’ trajectories, this paper highlights: (a) the role of key governance tensions as triggers as well as breeding grounds for reflexivity and co-learning outcomes; (b) the challenges of food movement actors to surmount or valorise key tensions in order to build accountable modes of food policy delivery through time; (c) the struggles to build legitimacy and accountability in local food movements through the development of bottom-linked organisations and governance modes. 相似文献
115.
Maria Agnese Sabatini Lorena Rebecchi Carla Cappi Alessandra Guidi Giovanni Dinelli Alberto Vicari Roberto Bertolani 《Chemosphere》1998,37(14-15)
Triasulfuron, a member of the sulfonylureas class of herbicides, was tested under laboratory conditions on the collembolan Onychiurus pseudogranulosus. Pure triasulfuron and commercial formulations at different rates (starting from a dose about 5 times the recommended agricultural rate) were tested separately on one-week old juveniles and adults reared in the laboratory. The persistence of the herbicide at the end of the trials lasting 30 and 60 days was verified by HPLC analysis. Laboratory tests indicated that only the rates exceeding 500 times the soil concentration expected soon after field application of the herbicide directly affected the tested species. 相似文献
116.
Aline S. Turque Alexander M. Cardoso Cynthia B. Silveira Ricardo P. Vieira Flávia A. D. Freitas Rodolpho M. Albano Alessandra M. Gonzalez Rodolfo Paranhos Guilherme Muricy Orlando B. Martins 《Marine Biology》2008,155(2):135-146
In this study we performed a survey of the bacterial communities associated with the Western Atlantic demosponges Hymeniacidon heliophila and Polymastia janeirensis, based on 16S rRNA sequencing and transmission electron microscopy (TEM). We compared diversity and composition of the sponge-associated
bacteria to those of environmental bacteria, represented by free-living bacterioplankton and by bacteria attached to organic
particulate matter in superficial sediments. Partial bacterial 16S rRNA sequences from seawater, sediment, and sponges were
retrieved by PCR, cloning, and sequencing. Sequences were subjected to rarefaction analyses, phylogenetic tree construction,
and LIBSHUFF quantitative statistics to verify coverage and similarity between libraries. Community structure of the free-living
bacterioplankton was phylogenetically different from that of the sponge-associated bacterial assemblages. On the other hand,
some sediment-attached bacteria were also found in the sponge bacterial community, indicating that sponges may incorporate
bacteria together with sediment particles. Rare and few prokaryotic morphotypes were found in TEM analyses of sponge mesohyl
matrix of both species. Molecular data indicate that bacterial richness and diversity decreases from bacterioplankton, to
particulate organic sediment, and to H. heliophila and P. janeirensis. Sponges from Rio de Janeiro harbor a pool of novel and exclusive sponge-associated bacterial taxa. Sponge-associated bacterial
communities are composed of both taxons shared by many sponge groups and by species-specific bacteria. 相似文献
117.
The heavy metal bioavailable fraction of a soil is a core parameter to verify the potential risks of contaminant exposure
to organisms or plants. The purpose of the present work is to identify the bioavailable metal fraction in soils treated with
chelates. This fraction was evaluated directly by analyzing metal concentrations in soil solution and indirectly using sequential
extraction procedures. The metal bioavailable fraction was compared with metal accumulated in plant leaves, grown in both
untreated and chelate-treated reactors. In order to verify the effect of the readily and slowly biodegradable chelates [S,S]-ethylenediaminedisuccinic
acid (EDDS), methylglycine diacetic acid (MGDA), and ethylenediaminetetraacetic acid (EDTA) on metal speciation in soils,
a simulation of chelate treatment was made and metal concentrations in different soil compartments before and after the simulation
were compared. Lead concentration in the soil solution was positively correlated with metal concentration in the test plants.
The soluble fraction showed the best correlation with metal concentration in soil solution. The simulation of the chelate
treatment demonstrated that EDTA and EDDS were able to extract part of the organic- and sulfide-bound fraction, which are
less available to plants. 相似文献
118.
Antonio Donateo Elena Gregoris Andrea Gambaro Eva Merico Roberto Giua Alessandra Nocioni Daniele Contini 《Environmental science and pollution research international》2014,21(15):9415-9429
In this work, an assessment of the impact of ship traffic and related harbour activities (loading/unloading of ships and hotelling in harbour) on PM 2.5 and particle number concentrations (PNC) separating the contribution associated to ship traffic from that of harbour-related activities is reported. Further, an assessment of the impact and environmental risks associated to polycyclic aromatic hydrocarbon (PAH) concentrations was performed. Results refer to the city of Brindisi (88,500 inhabitants) in the south-eastern part of Italy and its harbour (with yearly 9.5 Mt of goods, over 520,000 passengers and over 175,000 vehicles). PM2.5 and PNC concentrations show a clear daily pattern correlated with daily ship traffic pattern in the harbour. High temporal resolution measurements and correlations with wind direction were used to estimate the average direct contribution to measured concentrations of this source. The average relative contribution of ship traffic was 7.4 % (±0.5 %) for PM2.5 and 26 % (±1 %) for PNC. When the contribution associated to harbour-related activities is added, the percentages become 9.3 % (±0.5 %) for PM2.5 and 39 % (±1 %) for PNC. In the site analysed, air coming from the harbour/industrial sector was richer in PAHs (5.34 ng/m3) than air sampled from all directions (3.89 ng/m3). The major compounds were phenanthrene, fluoranthene and pyrene, but the congener profiles were different in the two direction sectors: air from the harbour/industrial sector was richer in phenanthrene and fluorene, which are the most abundant PAHs in ship emissions. Results showed that lighter PAHs are associated to the gas phase, while high molecular weight congeners are mostly present in the particulate phase. The impact on the site studied of the harbour/industrial source to PAHs was 56 % (range, 29–87 %). 相似文献
119.
120.
Alessandra De Marco Elena Paoletti 《Environmental pollution (Barking, Essex : 1987)》2010,158(2):536-542
Which is the best standard for protecting plants from ozone? To answer this question, we must validate the standards by testing biological responses vs. ambient data in the field. A validation is missing for European and USA standards, because the networks for ozone, meteorology and plant responses are spatially independent. We proposed geostatistics as validation tool, and used durum wheat in central Italy as a test. The standards summarized ozone impact on yield better than hourly averages. Although USA criteria explained ozone-induced yield losses better than European criteria, USA legal level (75 ppb) protected only 39% of sites. European exposure-based standards protected ≥90%. Reducing the USA level to the Canadian 65 ppb or using W126 protected 91% and 97%, respectively. For a no-threshold accumulated stomatal flux, 22 mmol m−2 was suggested to protect 97% of sites. In a multiple regression, precipitation explained 22% and ozone explained <0.9% of yield variability. 相似文献