نتایج جستجو برای: excremental coli form
تعداد نتایج: 836591 فیلتر نتایج به سال:
Background and Aim: In order to best use from traditional medicine, world health organization suggested hygiene in making products and traditional healing method. Considering the great importance of different types of drug distillates and different uses of traditional & industrial, the amount of fungal and bacteria pollution in sweat chicory, Tp and forty traditional essences was studied in Bir...
Background: Using natural methods such as constructed wetland is one of the methods for municipal wastewater treatment that has the capacity of reducing costs of treatment and improving environment. The purpose of this study is to determine the efficacy of sub-surface constructed wetland in wastewater treatment in Yazd. Methods: This is an experimental study aimed of to determine the effica...
the present study was conducted to investigate the effect of implicit focus on form through input flooding and the effect of noticing, explicit focus on form on linguistic accuracy. to fulfill the purpose of the study, 86 iranian pre-intermediate efl learners of one of the language institutes were chosen by means of administering ket as the homogeneity test. these learners were pretested throug...
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