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The purpose of the current study is to experimentally investigate the reduction of sodium adsorption ratio (SAR) from a concentrated stream of reversed osmosis (RO) using natural zeolites. In order to reduce the salinity of solution, experiments were carried out using zeolites of varying concentration, pretreatment of adsorbents, and the addition of Ethylenediaminetetraacetic acid (EDTA). The results...
The present paper is devoted to evaluation of transformers ageing. In this work 100 set transformers have been selected in order to take samples from transformer's oil. By direct measuring of deterioration of paper insulation (degree of de-polymerization) and deterioration by-products in oil, insulating papers condition have been studied. Transformer ageing has simulated with an appropriate model...
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