نتایج جستجو برای: long term irrigation
تعداد نتایج: 1031046 فیلتر نتایج به سال:
Societies frequently generate public infrastructure and institutional arrangements in order to mediate short-term environmental fluctuations. However, the social and ecological consequences of activities directed at dealing with short-term disturbances may increase the vulnerability of the system to infrequent events or to long-term change in patterns of short-term variability. Exploring this p...
Societies frequently generate public infrastructure and institutional arrangements in order to mediate short-term environmental fluctuations. However, the social and ecological consequences of activities dealing with short-term disturbances may increase the vulnerability of the system to infrequent events or to long-term change in patterns of short-term variability. Exploring this possibility r...
The importance of controlled water supply is indispensable for the sustainability in low land paddy production, which varies enormously from region to region and country to country. What essential is the degree of importance given to the three elements of water management namely (i) resource management within the watershed (ii) conveyance to the crop fields and (iii) management within farm fiel...
this study identifies and compares the antecedent of nigerian students’ perception on business social responsibility. part of its objectives is to examine the perception of business students in terms of importance of business social responsibility with respect to profitability, and the effectiveness of social responsibility in both long and short terms. the study reviews the related literature ...
introduction: verapamil, a phenylalkylamin –type ca2+ channel blocker, is widely used in the treatment of cardiovascular disorders especially as an antiaryhthmic and antiangina agent. theoretically, calcium can influence thyroid function and there are evidences that ca2+ channel blockers are able to interfere with thyroid function. in this study, the effects of chronic oral administration of ve...
Climate variability has the potential to affect both international and internal migration profoundly. Earlier work finds that higher temperatures reduce agricultural yields, which in turn reduces rates low-income countries, due liquidity constraints. We test whether access irrigation modulates this temperature–migration relationship, since buffers incomes from high temperatures. regress measure...
farmers in the indus basin, pakistan have generally switched to groundwater for additional water supplies due to the irregular supply of irrigation water; currently over 50% of the agricultural land in the basin is at least partially irrigated by tube-wells. these wells pump fresh groundwater, which essentially is the result of massive leakage from irrigation canals into the originally saltwate...
BACKGROUND Various studies have shown that non-surgical periodontal treatment is correlated with reduction in clinical parameters and plasma levels of inflammatory markers. The aim of this study was to evaluate the effect of long-term weekly supragingival irrigations with aerosolized 0.5% hydrogen peroxide as maintenance therapy followed by non-surgical periodontal treatment on clinical paramet...
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