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Résultats 281-290 de 347
Nitrogen and phosphorus leaching from fertilizer applied on golf course: lysimeter study
1998
Wong, J.W.C. (Hong Kong Baptist Univ., Kowloon (Hong Kong). Dept. of Biology) | Chan, C.W.Y. | Cheung, K.C.
Phenolic pattern of bean (Phaseolus vulgaris L.) as an indicator of chronic ozone stress
1998
Biolley, J.P. (Pau et des Pays de l'Adour Univ., Pau (France). Lab. d'Ecologie Moleculaire) | Lauga, B. | Cagnon, C. | Duran, R. | Salvado, J.C. | Goulas, P.
Effect of soil oxidants KNO(3), MnO(2), and air on methane production in flooded rice soil suspension
1998
Jugsujinda, A. (Louisiana State Univ., Baton Rouge, LA (USA). Wetland Biogeochemistry Inst. and Nuclear Science Center) | Lindau, C.W. | Delaune, R.D. | Patrick, W.H.
Crown condition and nutrient status of red spruce (Picea rubens Sarg.) in West Virginia
1998
Audley, D.E. (Pennsylvania State Univ., University Park, PA (USA). Dept. of Plant Pathology) | Skelly, J.M. | McCormick, L.H. | Jackson, W.A.
Levels of lead and other metals in citrus alongside a motor road
1998
Caselles, J. (Ciudad Universitaria, Madrid (Spain). Escuela Tecnica Superior de Ingenieros Industriales, Dept. de Quimica Aplicada a la Ingenieria)
Sulfate adsorption-desorption in a Swedish forest soil
1998
Gobran, G.R. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden). Dept. of Ecology and Environmental Research) | Selim, H.M. | Hultberg, H. | Andersson, I.
The bait-lamina test : General aspects, applications and perspectives Texte intégral
1998
Kratz, Werner
A general introduction of the bait-lamina test has been made in this article. This article has an introductional character for other articles dealing with the bait-lamina test method and gives the experimental data.The test was first introduced by Törne in 1990 to measure the biological activity of soil. It enables the monitoring of biotic (microbial and zootic) processes in the soil within a short period of time, and detailed investigations. The test system is based on visual assessment of feeding on small portions of thin laminated bait substrate exposed to edaphic processes. The test system has found its application mainly in Germany but in the meanwhile also in Portugal, Switzerland and in the Netherlands in laboratories of soil ecology and soil ecotoxicology. At present there are only few publications in the international literature, but the interest in this method is growing. During the past years two workshops on the subject have been organized in Germany to summarize experiences with and to evaluate the test system and optimize the standard procedure.
Afficher plus [+] Moins [-]Determination of chemical warfare agents : Gas chromatographic analysis of ethylarsine dichloride by derivatization with dithiols (3rd Communication) Texte intégral
1998
Haas, Rainer
Ethylarsine dichloride was used during WW I as a chemical warfare agent. Residues of this chemical warfare agent and its metabolites are still present today and continue to contaminate soil and water.A gas Chromatographic method for the detection and determination of ethylarsine dichloride is shown. Six dithiols were tested as possible derivatization reagents for ethylarsine dichloride. With selection of the dithiol, matrix interferences can be eliminated because of the different retention times of the derivatives.
Afficher plus [+] Moins [-]Mercury in precipitation and its relation to bioaccumulation in fish: a literature review
1998
Downs, S.G. (Imperial Coll. of Science, Technology and Medicine, London (United Kingdom). Imperial Coll. Centre for Environmental Technology) | Macleod, C.L. | Lester, J.N.
Soluble carbohydrates and secondary phytochemicals in Betula as affected by SO(2)-pollution
1998
Lavola, A. (Joensuu Univ. (Finland). Dept. of Biology)
