نتایج جستجو برای: copper extraction
تعداد نتایج: 246596 فیلتر نتایج به سال:
However, the conventional gold recovery process is cyanidation, due to the recent environmental laws; researchers are looking for alternative methods for the recovery of gold. Furthermore, the copper anode slime is one of the most important secondary sources of gold (about 1200 ppm). So, the main objective of the current work is gold separation from copper anode slime as a rich secondary source...
Sea-water samples collected by a variety of clean sampling techniques yielded consistent results for copper, cadmium, zinc, and nickel, which implies that representative, uncontaminated samples were obtained. A dithiocarbamate extraction method coupled with atomic absorption spectrometry and electro,thermal atomization is described which is essentially 100% quantitative for each of the four met...
طیف تشدید اسپین الکترونی copper dipyridine dichloride (cpc) copper di-4-tert.-butyle-pyridine dicholoride (ctc) اندازه گیری شده است . این سیستم ها از مولکولهای زنجیری خطی با پیوند اسپین نسبتا" بزرگی بین زنجیرها تشکیل شده اند. یک بستگی زاویه ای بصورت تابعی از 4 در محل خطوط تشدید مشاهده گردید. اندازه گیری خودگیری ویژه (susceptibility) جفت شدگی اسپین ها را رد کرد ولی برای تغیر مشاهدات لازم است یک ...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
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