نتایج جستجو برای: fluoride determination
تعداد نتایج: 270667 فیلتر نتایج به سال:
statement of problem: since the fluoride releases from materials with the property of releasing fluoride are decreasing gradually, it seems that probably the material rechargeability is more important than their long-term fluoride release. purpose: the objective of this study was to asses the fluoride release and rechargeability of 2 types of fluoride releasing restorative materials, a resin mo...
background; fluoride is an essential nutrient for the human body. the major routes of fluoride intake include food and drinking water, though the absorption of fluoride from food is much easier. the aim of this study was to evaluate the amount of fluoride in the soil and tomato and onion crops on farms of zanjan. methods; three farms of each crop (tomato and onion) were selected randomly. each ...
Introduction: In studies of the adsorption of pollutants onto different adsorbents, determining the adsorbent dose of the most important characteristics must be considered. The aim of the study was the determination and modeling of dose-response bone char fluoride removal from aqueous solutions and comparison of the adsorption isotherm models with dose-response models from the perspective of ad...
utrlizegauss newtonalgorithnfor determination of equilibrium constantin donor acceptor
where d = thickness of the film, ,o = resistivity of the film, = resistivity of the bulk material having the same structure and approximately the same number of defects as the films, l0 = mean free path of the charge carriers. The values of l0 calculated by the two methods were found to agree satisfactorily. Figs. 7 and 8 show the variation of the Hall mobility (/̂ H) with film thickness and sub...
Background and aim: The concentration of fluoride in drinking water resources is very important in peoples' health issue. One of the main resources of fluoride intake for people is drinking water. Therefore, this study aimed to determine the fluoride concentration in rural drinking water resources of Bardaskan County using geographic information system. Methods: In this descriptive/cross-sec...
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