نتایج جستجو برای: retention rate
تعداد نتایج: 1018909 فیلتر نتایج به سال:
Background and objectives: Formaldehyde is one of the compounds widely used in various industries hence, its discharge into the effluent is unavoidable. Exposure to formaldehyde has a significant health effects. To prevent these issues, treatment of wastewater containing formaldehyde is necessary. The purpose of this study was to determine the performance of aerobic sequencing batch reactor (SB...
BACKGROUND Retention in treatment is a key factor to the success of methadone maintenance treatment (MMT) and considered an important measure in evaluation of treatment effectiveness. OBJECTIVES This study aimed to investigate the retention rate and predictors of retention in MMT in Rafsanjan. PATIENTS AND METHODS This was a historical cohort study. A total of 1396 patients admitted between...
The study aimed at investigating whether the retention of vocabulary acquired incidentally is dependent upon the amount of task-induced involvement. Immediate and delayed retention of twenty unfamiliar words was examined in three learning tasks( listening comprehension + group discussion, listening comprehension + dictionary checking + summary writing in L1, and listening comprehension + dictio...
One of the most important tasks of the Human Resource Management (HRM) is employee retention. Hence, turnover rate is used to evaluate the HRM’s performance, and it is considered to be ok where the turnover rate is normal. However there exists another side for the coin which has got a lot to do with the reasons why the employees remain in the organization. By no doubt, the employee retention ba...
چکیده ندارد.
introduction wetlands are classified into four kinds of flows as subsurface, surface, vertical, and hybrid flows. usually, wetlands are planted with common reed (phragmites australis), a rhizomatose plant of the graminae which produces a good yield in green biomass and whose roots can reach a considerable depth and plays a significant role in the wetland self-purification. the treatment efficie...
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