نتایج جستجو برای: gravelly drainage layer
تعداد نتایج: 322829 فیلتر نتایج به سال:
REASONS FOR PERFORMING STUDY Incisional drainage and suppuration occurs commonly following exploratory laparotomy; any technique with the potential to reduce the incidence of this complication warrants investigation. OBJECTIVES To determine if abandoning the use of subcutaneous sutures in laparotomy wound closure is safe and whether it reduces the risk of suppuration. METHODS A randomised c...
This research was conducted to prepare landslide susceptibility zonation (LSZ) map for the Dez-e-Ouliabasin using logistic regression model. For this purpose, at first, the most important factors affecting land sliding including slope, aspect, elevation, precipitation, the distance from road, the distance from fault, the distance from drainage, land use, and lithology were determined. Then, the...
Vertical Electrical Sounding (VES) and pumping test (constant discharge recovery test) was carried out in parts of Boki Local Government Area to evaluate the groundwater potential, using aquifer characteristics study area. Sixteen (16) VES point employed for this Schlumberger array, with a maximum spread 400- 600m. The stimulated result from field data shows 3-5 layers resistivity model followi...
The growth of world population and the demand for agricultural products can be regarded as one of the important issues that humanity has ever faced. There are serious concerns regarding surface and ground water pollution by nitrates because of using nitrogen fertilizers in the agriculture. Improving agricultural water management systems can reduce nitrate in drainage outflow and therefore, redu...
small precipitation with temporal and spatial variation of rainfall is the main responsible factors on flood occurrence in arid and semi arid regions. floods in their regions usually contain high concentration of sediments which when they are deposited on the surface of lands, they change the properties of soils of the area. in this research, the effect of floodwater spreading on physic-chemica...
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