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Результаты 151-160 из 229
Microbiological Examination of Water
2001
Ezzat, S. M. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt)) | Tawfic, T. A.
Water Quality Database Management
2001
Salah, A. M. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt)) | Tawfic, T. A.
Initial Environmental Evaluation Case Study Irrigation Improvement Project (Egypt)
2001
Tawfic, T. A. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt))
Water Quality Control and Assurance
2001
El-Tawwab, Amr R. (Central Laboratory for Environmental Quality Monitoring, Cairo (Egypt)) | Tawfic, T. A.
Control of Water Pollution from Agriculture
2001
Hamdy, A. (Centre International de Hautes Etudes Agronomiques Méditerranéennes, Bari (Italy). Institut Agronomique Méditerranéen)
Water Quality Modelling
2001
El-Sayed, A. (Drainage Research Institute, Open Drainage Dept.)
Monitoring of Natural Hydrocarbon Release from Oilsands Deposits in a Canadian River Basin
2001
Headley, J. (National Water Research Centre, Cairo (Egypt)) | Tawfic, T. A.
Athabasca Oil Sands are found in the McMurray formation in the Athabasca River Basin in Northern Alberta, Canada. Monitoring studies conducted during 1998-1200, have indicated that there is a preponderance of oil sands-derived hydrocarbons, primarily PAHs, their C14 alkylated analogues, and biomarkers, in downstream sediment samples of the tributaries relative to the upstream samples. The relative composition of these hydrocarbons are diagnostic of a petrogenic source, and provides a fingerprint for characterization of biofilm samples, aquatic invertebrates, and sediments in northern rivers and tributaries. Results of GC-MS analyses of sediments, confirm that the tributaries passing through the Fort McMurray oil sands regions contain significant levels of naturally derived hydrocarbons (2-50 mg/g). Field activities in heavily impacted areas should therefore continue to emphasize the tributaries draining through oil sands deposits, as opposed to the main-stem of the Athabasca River where hydrocarbon levels are subject to dilution from high sedimentation rates.
Показать больше [+] Меньше [-]Sustainable development and fresh water management in industry
2001
El-Zarka, M. (Director of Environmental and Development Unit - Social Found for Development, Cabinet of Ministers, (Egypt))
Bioindicators and biomarkers of environmental pollution and risk assessment
2001
Kaiser, Jamil
Alternative perspectives on livelihoods, agriculture and air pollution
2001
Mukherjee, Neela
