abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

different researchers in different parts of the world have investigated the strategies used to translate written works ranging from novels to classroom assignments. however, by the significant increase in the number of postgraduate students in iran in the last few years, a very common kind of translation in iran includes translating abstracts of master’s theses. in this work, the researcher hav...

امروزه با توجه به افزایش رقابت شدید در تولید و فروش محصولات و خدمات اهمیت بهینه سازی فرآیند و ارتقای کیفیت به همراه کاهش هزینه ها از دید ارباب صنایع و خدمات پوشیده نمانده و از آنجا که واژه کیفیت از دیدگاه ‏‎tqm‎‏ یعنی رضایت مشتری و بهبود مستمر این سطح از رضایت . لذا در این تحقیق یکی از روشهای موثر برای رسیدن به این مهم یعنی فرآیند ‏‎ve‎‏ ( که با تحلیل کارکردها و شناسایی هزینه های غیرضروری و بکا...

teachers beliefs have usually been left unattended in the realm of educational research in iranian context. one of those beliefs which seems to impact teachers performance in the classroom is their sense of self-efficacy, which refers to teachers belief in their ability to enhance student achievement and in bringing about positive learning outcomes. the present study aimed to investigate the pr...