نتایج جستجو برای: optimum operation time
تعداد نتایج: 2097779 فیلتر نتایج به سال:
This work investigated fluoride removal of municipal potable water by electrocoagulation using response surface methodology that was applied in the development of statistical analyzing, modeling and interpreting the resulted treatment data. In addition the response, residual, probability, surface and contour plots were achieved. Fractional factorial design has been applied for the simultaneous ...
The initial database search cost deteriorates due to record additions, deletions and updates performed during the system operation. Previous studies proposed strategies for selecting the optimum maintenance points by making various assumptions about the rate of database deterioration, the database planning period, the maintenance interval, etc. However, the studies did not express the optimum m...
The aim of this study was evaluation of stability of immobilized phospholipase A2 (PLA2) for soybean oil degumming. Also, the effect of reaction time on residual phosphorus levels was investigated according to the optimum pH and temperature. The free PLA2 and three immobilized PLA2 demonstrated significant differences in optimum operation conditions. pH, temperature and reaction time increased ...
Introduction: Color is one of the indices of water pollution. Discharge of colored effluent can damage to receiving water resources. One of the proposed methods for treating dyeing wastewater is electrocoagulation process. In this study, decolorization of the real textile effluent by electrocoagulation process using monopolar iron electrodes was studied. Methods: This study was run experiment...
Performance of Chamomile (Matricaria chamomilla L.) was evaluated on twelve transplanting dates that were arranged at 30 days interval; during 2013-2014 on experimental field of Wondo Genet agricultural research center; using RCBD design with three replications. Transplanting time exerted a very highly significant (p<0.0001) influence on plant height, flower yield and essential oil yield; essen...
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