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排序方式: 共有183条查询结果,搜索用时 31 毫秒
31.
Jorge A. Achcar Eliane R. Rodrigues Guadalupe Tzintzun 《Environmental and Ecological Statistics》2011,18(2):271-290
In this paper we make use of some stochastic volatility models to analyse the behaviour of a weekly ozone average measurements
series. The models considered here have been used previously in problems related to financial time series. Two models are
considered and their parameters are estimated using a Bayesian approach based on Markov chain Monte Carlo (MCMC) methods.
Both models are applied to the data provided by the monitoring network of the Metropolitan Area of Mexico City. The selection
of the best model for that specific data set is performed using the Deviance Information Criterion and the Conditional Predictive
Ordinate method. 相似文献
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Picchi Carolina Giorgetti Lucia Morelli Elisabetta Landi Marco Rosellini Irene Grifoni Martina Franchi Elisabetta Petruzzelli Gianniantonio Barbafieri Meri 《Environmental science and pollution research international》2022,29(11):15983-15998
Environmental Science and Pollution Research - Phytoremediation represents a natural method to remove contaminants from soil. The goal of this study was to investigate the potential of... 相似文献
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Mottola Filomena Santonastaso Marianna Iovine Concetta Frenzilli Giada Picchietti Simona Genualdo Viviana Rocco Lucia 《Environmental science and pollution research international》2022,29(41):62208-62218
Environmental Science and Pollution Research - The increased titanium dioxide nanoparticles (TiO2-NPs) spread and their interaction with organic and inorganic pollutants arouses concern for the... 相似文献
35.
Lucia De Stefano 《Journal of environmental management》2010,91(6):1332-1340
Public participation is a key element of Integrated Water Resources Management and, in the European Union (EU), is a major challenge in the implementation of the Water Framework Directive (WFD), which was adopted in December 2000. When new legislation enters into force it is essential to set a baseline against which to measure the progress towards the established goals at significant milestones of its implementation. This paper presents an assessment of the quality of stakeholder participation at the beginning of the WFD implementation in twenty countries belonging to or with close institutional relationships with the EU. The evaluation was completed by environmental non-governmental organizations and it shows that already in 2003 there were positive examples of stakeholder participation in several countries but that, in general, the WFD implementation will require significant efforts to improve on participatory practices throughout Europe. 相似文献
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Regional Environmental Change - Spain is a highly decentralized country where water governance is a multi-level institutional endeavor requiring effective intergovernmental coordination—in... 相似文献
37.
Radon concentration measurements in atmosphere were taken in years from 1997 to 1999 in Milan and at pre-alpine sites located north of Lombardy. In this paper the results of measuring campaigns and a comparison of radon levels observed in the hilly area north of the town and on the pre-Alps are reported. The general criteria of the measurements and the interpretative models of radon concentration are presented. The Lake Maggiore area shows evidence of a great nocturnal stability and frequent formation of Nocturnal Stable Layer. The peculiar findings in the high altitude stations confirm the use of radon as an indicator of atmospheric dispersion of pollutants in an area with complex orography. The afternoon minimum values are concordant for the different stations: this implies a remixing in afternoon hours over the whole area investigated. 相似文献
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Tamara Cibic Lucia Bongiorni Flavio Borfecchia Antonella Di Leo Annalisa Franzo Santina Giandomenico Ana Karuza Carla Micheli Manja Rogelja Lucia Spada Paola Del Negro 《Environmental science and pollution research international》2016,23(13):12739-12754
Knowledge on ecosystem functioning can largely contribute to promote ecosystem-based management and its application. The Mar Piccolo of Taranto is a densely populated area at a high risk of environmental crisis. Here, planktonic primary production (PP) and heterotrophic prokaryotic production (HPP) were measured as proxies of functioning in three sampling sites located in two inlets at different levels of industrial contamination, during three sampling surveys (June 2013, February and April 2014). To have a better overall view and provide some insights into the benthic-pelagic coupling, we integrated PP and HPP in the water column with those in the sediments and then discussed this with the origin of the organic matter pools based on analysis of stable isotopes. Heavy metals and polychlorobiphenyls (PCBs) were also analysed in the surface (1 cm) sediment layer and related to the overall ecosystem functioning. Multidimensional scaling (MDS) analysis, based on the main data, clearly separated the second inlet from the first one, more severely impacted by anthropogenic activities. The stable isotope mixing model suggested the prevalent terrestrial/riverine origin of the particulate organic matter pools (mean 45.5 %) in all sampling periods, whereas phytoplankton contributed up to 29 % in February. Planktonic PP and HPP rates followed the same pattern over the entire study period and seemed to respond to phytoplankton dynamics confirming this community as the main driver for the C cycling in the water column. On the contrary, benthic PP rates were almost negligible while HPP rates were lower or comparable to those in the water column indicating that although the Mar Piccolo is very shallow, the water column is much more productive than the surface sediments. The sediment resuspension is likely responsible for a pulsed input of contaminants into the water column. However, their interference with the proper functioning of the pelagic ecosystem seems to be limited to the bottom layers. 相似文献