نتایج جستجو برای: manganese ore
تعداد نتایج: 33731 فیلتر نتایج به سال:
Some Fe and Fe-Mn deposits are found within sedimentary pelagic rocks and radiolarian cherts of the Khoy ophiolite. Mn-Fe mineralizations in Safo area north of Chalderan City are examples of them. In Safo area, deposition of manganese occurred as lense-like orebodies in different horizons within pelagic rocks. They are stratiform and have syn-sedimentary origin. Mineralogically, braunite, pyrol...
The decline of fossil fuel availability is calling for alternative energy such as electricity produced by degradation waste in microbial cells. performance cells controlled the anode because microorganisms grow and attach on anode. Here, we prepared carbon felt electrodes modified with manganese ore based hypothesis that silicon oxides would improve cell to treat simulated black water. We compa...
BACKGROUND In 2010, Médecins Sans Frontières discovered a lead poisoning outbreak linked to artisanal gold processing in northwestern Nigeria. The outbreak has killed approximately 400 young children and affected thousands more. OBJECTIVES Our aim was to undertake an interdisciplinary geological- and health-science assessment to clarify lead sources and exposure pathways, identify additional ...
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