nodules

What Do Manganese Nodules Contain?

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What Do Manganese Nodules Contain? Polymetallic nodules, also called manganese nodules, contain four essential battery metals: cobalt, nickel, copper, and manganese, in a single ore. Formed over millions of years by absorbing metals from seawater, these nodules lie unattached to the abyssal seafloor and are almost entirely composed of usable materials. How are manganese nodules

What Is Chondrodermatitis Nodularis Helicis?

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What Is Chondrodermatitis Nodularis Helicis? Chondrodermatitis nodularis chronica helicis (CNH) is a benign inflammatory condition that affects the skin and cartilage of the pinna. CNH, also known as Winkler disease, commonly affects the helix of the pinna, though in some cases, the antihelix also may be affected. Does chondrodermatitis nodularis helicis go away? The prognosis