خيارات البحث
النتائج 21 - 30 من 229
Water pollution | Stronger efforts needed by EPA to control toxic water pollution | Toxic water pollution
1991
Pollution prevention | Meeting the environmental challenges of the 1990s
1991
[Forest decline and air pollution. Results of five years of research (1985-1990) in the framework of the French program DEFORPA [forest decline attributed to air pollution]]
1991
Landmann, G. (Institut National de la Recherche Agronomique, Seichamps (France). Centre de Nancy, Station de Recherches Sol Microbiologie et Nutrition des Arbres Forestiers, Programme DEFORPA)
Soil vapor extraction technology
1991
Pedersen, Tom A. | Curtis, James T.
Protective measures of water resources in the Federal Republic of Germany
1991
Lersner, H.L.F. von (Federal Environmental Agency, Berlin (Germany))
Protective measures for water resources [water protection policies]
1991
Joerg, R. (Ministry of Interior of the State of Bavaria, Munich (Germany))
The potential impact of industrial wastes on water resources in Amman-Zarka basin
1991
Gedeon, R. (Ministry of Water and Irrigation, Amman (Jordan). Water Authority Laboratories)
Scarcity of water supply and increasing demand for water in a densely populated area like Amman-Zarka, as well as new threats and contaminants, have emerged, leaving the area with such diverse water quality problems as eutrophication in surface waters and nitrates in ground waters. The problem has been aggravated by increasing emissions of industrial effluents from more than 60 industries located in the catchment area of Amman-Zarqa. Thus the present work has been confined to assessing industrial wastes and their impact on water resources. Water, as part of the human environment, occurs in four main forms - as groundwater, in surface water bodies, in the sea and as vapour in the atmosphere. The present work deals with the first two only, with main objectives as follows: Assessment of man - made impacts on water quality in the area. Identification of sources of pollution and pollutant pathways and behaviour. Determination of trends of chemical constituents and organic pollutants in water resources
اظهر المزيد [+] اقل [-]Dying forest and air pollution: what we have learnt (DEFORPA program 1984-1991)
1991
Landmann, G. (Ministere de l'Agriculture, Paris (France). Departement de la Sante des Foret)
Prosperity without pollution
1991
Hirschhorn, Joel S. | Oldenburg, Kirsten U.