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[Evaluation of air pollution exposition: needs in epidemiology and for executives] | Evaluer les expositions: les besoins des epidemiologistes et des decideurs
1999
Zmirou, D. (Universite de Grenoble 1, La Tronche (France). UFR de Medecine, Laboratoire de Sante)
Factors Affecting Microbial Degradation of Polycyclic Aromatic Hydrocarbon Phenanthrene in the Caribbean Coastal Water Texto completo
1999
Zaidi, B.R. | Imam, S.H.
Studies were conducted to assess factors that may influence the rate and extent of biodegradation of polyaromatic hydrocarbons (PAHs) in waters of Guayanilla Bay (latitude, 18°N; longitude, 66.45°W) Puerto Rico. Phenanthrene was used as a model PAHs compound. Both the rate and extent of phenanthrene degradation by natural microbial flora present in seawater samples from Guayanilla Bay were quite slow. Addition of KNO3 as a source of inorganic nitrogen (N) resulted in a 10-fold increase in the rate of phenanthrene degradation within a 125 h period, whereas, addition of K2HPO4 as a source of inorganic nutrient phosphorus (P) had no effect. Phenanthrene degradation was strongly inhibited when seawater pH was adjusted to 10.0. Phenanthrene in seawater samples degraded rapidly when first pretreated with hydrogen peroxide (H2O2) and then inoculated with a known indigenous phenanthrene degrading bacterium, Alteromonas sp. Pretreatment of phenanthrene with Triton-x-100 had little or no effect on its degradation by the same bacteria, whereas, degradation in samples preheated at 60°C was somewhat inhibited.
Mostrar más [+] Menos [-]Storm water pollution control
1999
Dodson, Roy D.
Economics of water pollution
1999
Murty, M. N. (Maddipati Narasimha) | James, A. J. | Miśra, Smitā
This book introduces readers to the theoretical and applied approaches used to control pollution in developing countries. The first of its kind in the Indian context, it investigates the case for using economic instruments to control environmental pollution, especially water pollution arising from industrial production. This book, dealing as it does with both theoretical and empirical issues, will be of interest to students, teachers and researchers of environmental economics as well as policy-makers. Professionals and activists involved in environmental protection will also find it useful.
Mostrar más [+] Menos [-]Rainfall composition in Minnesota: integrating the chemistry, synoptic meteorology and numerical modelling
1999
Krupa, S. | Nosal, M. (Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108 (USA))
Levels of polychlorinated biphenyls, organochlorine pesticides, mercury and lead in relation to shell thickness in marsh harrier (Circus aeruginosus) eggs from Charente-Maritime, France
1999
Pain, D.J. | Burneleau, G. | Bavoux, C. | Wyatt, C. (The Royal Society for the Protection of Birds, The Lodge, Sandy, Bedfordshire SG19 2DL (United Kingdom))
Anthropogenic chemicals (insecticides) disturb natural organic chemical communication in the plankton community
1999
Hanazato, T. (Suwa Hydrobiological Station, Shinshu University, 5-2-4 Kogandori, Suwa, Nagano 392-0027 (Japan))
Lead shot ingestion by marsh harriers Circus aeruginosus from the Ebro delta, Spain
1999
Mateo, R. | Estrada, J. | Paquet, J.Y. | Riera, X. | Dominguez, L. | Guitart, R. | Martinez-Vilalta, A. (Laboratory of Toxicology, Faculty of Veterinary, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Spain))
Inhibition of flowering and reproductive success in spreading dogbane (Apocynum androsaemifolium) by exposure to ambient ozone
1999
Bergweiler, C.J. | Manning, W.J. (Department of Microbiology, University of Massachusetts, 203 Morrill Science Center IVN, Box 35720, Amherst, MA 01003-5720 (USA))
Long term measurements of wet deposition and precipitation scavenging of hexachlorocyclohexanes in Southern Norway
1999
Wania, F. | Haugen, J.E. (WECC - Wania Environmental Chemists Corporation, 280 Simcoe Street, Suite 404, Toronto, Ontario, M5T 2Y5 (Canada))