dopaminergic neurons in the ventral tegmental area (vta) and the substantia nigra . some studies implicate this pathway as having a role in attention deficiency and hyperactive behavior . [ ] soluble guanylate cyclase contains a molecule of heme , and is activated primarily by the binding of nitric oxide...
of the parathyroid glands when the plasma calcium level falls below the normal range in order to raise it; calcitonin is released by the parafollicular cells of the thyroid gland when the plasma level of calcium is above the normal range in order to lower it. contents body compartment content blood...
sherritt-gordon process. with this technique, hydrogen sulfide is added to the molten material to remove copper. this leaves a concentrate of only cobalt and nickel. solvent are then used to extract cobalt. this leaves a final product with a nickel concentration of more than %. further processing of nickel oxide...
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scale • audible indication of completion ("beep" sound) • interchangeable, color-coded isolation chambers with matching probes. helps keep probe covers and probes together for aiding in infection control (blue -oral/axillary; red -rectal) • easily wiped clean • uses four standard disposable "aa" batteries...
. smelting during the second step, high-powered furnaces break down zinc oxide into elemental zinc. vertical retort process for zinc smelting via mliu on wikipedia the furnaces use electricity, natural gas or coal to reach temperatures of degrees fahrenheit. a series of chemical reactions produces zinc...
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