Results 221 to 230 of about 20,234 (261)

The problem of agricultural ‘diffuse’ pollution: Getting to the point

Science of The Total Environment, 2019
Despite introduction of legislation such as the EU Nitrates and Water Framework Directives (Directives 91/676/EEC and 2000/60/EC respectively), agricultural practices are often still regarded as a major factor in poor water quality across many EU member states.
Simon, Harrison, Cassandra, McAree, William, Mulville, Timothy, Sullivan   +3 more
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Introduction to the Diffuse Groundwater Pollution papers

Quarterly Journal of Engineering Geology and Hydrogeology, 2004
Diffuse pollution from human activities at the land surface remains a major groundwater quality concern for the UK, for our European partners, in North America and now increasingly in the developing world. The impact on the underlying groundwater of leached nitrogen from the gradual intensification of arable farming was recognized in the 1970s.
John Chilton, Tim Besien
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Diffuse Pollution and the Role of Agriculture [PDF]

, 2003
Agriculture contributes negative and positive externalities to society, that is, beneficial and detrimental changes in human wellbeing to third parties for which they are not generally compensated or charged. Beneficial externalities include the creation of amenity and landscape and negative externalities include pollution of surface and groundwater ...
David Pearce, Phoebe Koundouri
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Pollution diffuse par l'agriculture

1994
Par nature, l'activité agricole est à l'origine de pollutions diffuses difficiles à identifier et provoquant des dommages très variés. Dans ces conditions, soit on se trouve dans un régime de responsabilité sans faute, soit on a des difficultés à établir un comportement fautif.
Rainelli, Pierre, Weaver, Robert D.
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Modelling Diffusion and Dispersion of Pollutants

1995
Diffusion and dispersion processes in atmospheric turbulence naturally divide according to different time and space scales. It is common to distinguish scales of atmospheric motion according to: The Planetary Surface Layer Planetary Boundary Layer The Meso-γ scale (2–20 km) The Meso-β scale (20–200 km) The Meso-α scale (200 ...
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Urban air pollution—a diffusion equation model

Mathematical Biosciences, 1975
Abstract A mathematical model for the occurrence and diffusive propagation of air pollution in an urban air space is proposed. Using a Green's function of the proposed diffusion equation and a Poissonian emission process, a statistical analysis of the resulting density of air pollution is made.
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Electrical Methods to Monitor Pollutant Diffusion

1995
Geophysical techniques can often furnish high resolution methods of investigation at reasonable cost.
P. Chiara, A. Godio, G. Ranieri, L. V. Socco   +3 more
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Diffusion for Diffusion: A versatile multiphysics fields refinement framework in pollutants transportation

Water Research
Refining coupled multiphysics fields in pollutant transport from sparse measurements is critical for environmental risk assessment and industrial pollution mitigation. However, existing numerical solvers and machine learning architectures exhibit inherent limitations in computational efficiency, generalizability, and predicting accuracy.
Yinpeng Wang, Yuancheng Zhan
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Rationalization of water quality monitoring locations under spatiotemporal heterogeneity of diffuse pollution using seasonal export coefficient

Journal of Environmental Management, 2021
Subhankar Karmakar, Vinay Yadav
exaly  

Guide to Local Diffusion of Air Pollutants

1971
Abstract : The report is intended as a guide on local air pollution for forecasters who have had no prior experience with diffusion. Certain fundamentals of micormeteorology and diffusion in the lower layers are expounded and their relatio to the determination of air pollutant dispersion and concentration amounts is explained. Calculations of pollutant
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