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برجاماندن رسوبات در مخازن سدها عمر آنها را به طور جدی تهدید می کند. فرسایش و رسوبگذاری در این مخازن باعث کاهش راندمان و بی نتیجه ماندن سرمایه گذاری های کلان انجام شده در صنعت آب می گردد.یکی از عوامل برآورد ناصحیح عمر مفید سدهای کشور عدم انتخاب روش مناسب جهت تخمین حجم رسوب در یک حوضه است. لذا هدف کلی در این تحقیق بررسی و مقایسه چند روش هیدرولوژیکی محاسبه حجم رسوب مخزن سداکباتان و انتخاب روش بهین...
Growing population and enhanced demand for fuelwood, timber and agricultural land are causing a rapid deforestation process throughout the tropics and subtropics. This pressure on the forest land is being accompanied by increasing occurrence of human-caused wildfires. In most cases the fires are following in the wake of the exploitation of natural forests and the slash-and-burn shifting agricul...
PROGRESSIVE CONTROL PATHWAY AND REGIONAL ROADMAPS TOWARDS A COMMON FRAMEWORK FOR LONG-TERM ACTION AGAINST FOOT AND MOUTH DISEASE AT NATIONAL AND REGIONAL LEVELS Keith Sumption(1), Juan Lubroth(2), Giancarlo Ferrari(2), Carsten Potszch(1) & Joseph Domenech (2) (1) European Commission for the Control of Foot-and-Mouth Disease (EuFMD), FAO, Rome, Italy (2) EMPRES Animal Health, AGAH, FAO, Rome, I...
In Dead Water – Merging of climate change with pollution, over-harvest, and infestations in the world's fishing grounds. Disclaimer The contents of this report do not necessarily reflect the views or policies of UNEP or contributory organisations. The designations employed and the presentations do not imply the expressions of any opinion whatsoever on the part of UNEP or contributory organisati...
The report describes the work of the Systems Analysis Department at Risø National Laboratory during 1996. The department is undertaking research within Simulation and Optimisation of Energy Systems, Energy and Environment in Developing Countries-UNEP Centre, Integrated Environmental and Risk Management and Man/Machine Interaction. The report includes lists of publications, lectures, committees ...
Suppression of apoptosis has been implicated as a mechanism for the hepatocarcinogenicity of the peroxisome proliferator class of non-genotoxic carcinogens. The ability of the peroxisome proliferator nafenopin to suppress or delay the onset of liver apoptosis was investigated using primary cultures of rat hepatocytes and the Reuber hepatoma cell line FaO. 50 microM nafenopin reversibly maintain...
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