Results 111 to 120 of about 1,856,875 (295)

Diffuse pollution of surface water by pharmaceutical products

open access: yesWater Science and Technology, 2004
Pharmaceutical products for humans or animals, as well as their related metabolites (degradation products) end up in the aquatic environment after use. Recent investigations from abroad show that low concentrations of pharmaceuticals are detectable in municipal waste water, surface water, groundwater and even drinking water.
J G M, Derksen   +2 more
openaire   +2 more sources

Nonpoint pollution in Aragón: emission loads and control issues [PDF]

open access: yes, 2010
This paper evaluates nitrogen pollution loads from irrigation return flows in the Spanish region of Aragon. Percolation and nitrogen leaching estimates are found for each municipal area based on crop surface, irrigation systems, climate, and crop ...
Albiac Murillo, José   +2 more
core  

The Role of Tradable Permits in Water Pollution Control [PDF]

open access: yes, 2003
This paper was prepared as a conceptual framework to stimulate discussions on the role and applicability of tradable permits in water pollution control among participants of the Technical Seminar on the Feasibility of the Application of Tradable Water ...
Eduard Interweis   +2 more
core  

Geographically Weighted Principal Components Analysis to assess diffuse pollution sources of soil heavy metal: Application to rough mountain areas in Northwest Spain

open access: yes, 2018
Heavy metal pollution can result in the degradation of the soil, air and water bodies' quality affecting the health of all living organism. We analyze the spatial distribution of the concentrations of soil heavy metal and relationship with natural or ...
S. Fernández   +3 more
semanticscholar   +1 more source

Dynamics and optimal control for a spatially-structured environmental-economic model

open access: yesElectronic Journal of Differential Equations, 2015
A deterministic model of economic growth and pollution accumulation, in the form of a system of partial differential equations, is designed and analyzed. The model assumes pollution as a by-product of production.
Davide La Torre   +4 more
doaj  

Spatially explicit groundwater vulnerability assessment to support the implementation of the Water Framework Directive – a practical approach with stakeholders [PDF]

open access: yes, 2008
The main objective of the study presented in this paper was to develop an evaluation scheme which is suitable for spatially explicit groundwater vulnerability assessment according to the Water Framework Directive (WFD).
Berkhoff, Karin
core  

Issues of diffuse pollution model complexity arising from performance benchmarking [PDF]

open access: yesHydrology and Earth System Sciences, 2007
Flow and nitrate dynamics were simulated in two catchments, the River Aire in northern England and the River Ythan in north-east Scotland. In the case of the Aire, a diffuse pollution model was coupled with a river quality model (CASCADE-QUESTOR); in the
doaj  

Who Are the Stakeholders in Environmental Risk Decisions - How Should They Be Involved [PDF]

open access: yes, 2000
[Excerpt] In the United States, as in other countries, public participation in environmental policy decisions has come a long way. In its infancy, it was limited to public hearings concerning decisions that were, for all practical purposes, done deals.
English, Mary R.
core   +2 more sources

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