نتایج جستجو برای: water and biological samples
تعداد نتایج: 16976865 فیلتر نتایج به سال:
Benthic macroinvertebrate-based indices are suitable tools for assessment of stream health and human impacts on its biological integrity. Since Ghale Rudkhan River is an attractive tourist destination and its surrounding population is growing, its water quality was examined usning biological indicators. Macroinvertebrate samples were taken monthly by a Surber sampler (mesh = 300 µ and area = 90...
Abstract: Background and Aim of the study: The landfill leachate is contains various contaminates that can effect on quality of surface water and wells. In this study influence of the leachate from Albourz landfill in Qom (Qom, Iran) was investigated on quality of groundwater. Material and methods: In this experimental study, Samples were collected from wells around the landfill site. Va...
Various natural (high arsenic bearing strata and pyrite oxidation) and anthropogenic (agricultural, coal mining, metal smelting, and refining industry) sources are involved in arsenic pollution of water. Water, soil, and biological samples (vegetables, fish, and meat) were collected from potentially arsenic affected area Hizla, Bangladesh and analyzed to find the source of arsenic contamination...
Djendjen River is one of the largest rivers in the region of Jijel (Algeria). Human activities such as urban discharges, industrial, agricultural, and livestock have significant effects on the quality of water. The present study attempts to evaluate the quality of water along the banks of the Djendjen River at different sampling sites, using physico-chemical and bacteriological methods. The col...
BACKGROUND Poor state of water supply systems, shortage of water purification facilities and disinfection systems, low quality of drinking water generally in Russia and particularly in the regions of the Russian Arctic, Siberia and Far East have been defined in the literature. However, no standard protocol of water security assessment has been used in the majority of studies. STUDY DESIGN AND...
abstract the present study was conducted in order to investigate the impact of an integrated model of form-focused and task-based instruction on iranian efl learners vocabulary learning and retention.it also aimed to detect efl learners attitude towards the implementation of form-focused task-based vocabulary instruction in the classroom. in order to address the purposes of this study, a sampl...
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