the efficiency of diazinon (as insecticides) and nitrate (related to nitrogen fertilizer) removal from contaminated water is investigated through nf membrane technique. the effects of nitrate concentration (40-160 mg/l), diazinon concentration (10-1000 µg/l) and ph (5-9) on the efficiency of a commercial polyamide nanofilter membrane at a constant pressure of (800 kpa) are investigated. the res...

The official opening of the Direct Bournemouth Railway is a good text for a description of that rising West Hants watering-place. Bournemouth has been growing in favour, and competing vigorously with other and older towns over which it has unquestionable advantages, the chief being its comparative newness. Some wateringplaces like Weymouth have had an existence of several generations, and their...

this paper reports the results of using three empirical methods (makkink, priestley-taylor and hargreaves) for estimating the reference evapotranspiration (et0) in the semi-arid region of tensift al haouz, marrakech (center of morocco). the penman-monteith equation, standardized by the food and agriculture organization (fao-pm), is used to evaluate the three empirical methods. the obtained et0 ...

Each year, wastewater treatment plants in the United States process more than 11.5 trillion gallons of sewage water, enough to fill Utah's Great Salt Lake more than twice. This sewage has the potential to cause catastrophic environmental damage, and it is up to the people who operate the 16,024 wastewater treatment plants in the United States to ensure that it does not harm the lakes, rivers, a...

In the past, the main driving force for hydrogeologic studies has been the need to assess the water-supply potential of aquifers. During the past 20 years, however, the emphasis has shifted from water-supply problems to water-quality problems. This has driven a need to predict the movement of contaminants through the subsurface environment. One consequence of the change in emphasis has been a s...

continuing agricultural expansion and urban development in saudi arabia, (located in an arid climate), together with an increased demands for more water supplies, calls for more efficient irrigation practices, and an increase in crop water productivity (cwp). throughout the present study, a deficit irrigation system was investigated for its impact on soil salinity, crop response factor (ky), cw...