I confess that I didnât know the geological conventions for abbreviating time until I started teaching the geology writing class and looked them up. (Thatâs despite having published a paper on argon-argon geochronology.
Iontophoresis is a physical process in which ions flow diffusively in a medium driven by an applied electric field.ontophoresis of acetylcholine is used in research as a way to test the health of the endothelium by stimulating endothelium-dependent generation of nitric oxide and subsequent microvascular vasodilation.
Sweat stimulation by pilocarpine iontophoresis lasts five minutes. Sweat collection time cannot exceed 30 minutes. If gauze or filter paper is used, the stimulated area must be 2 inches by 2 inches (4 square inches [in2]). The iontophoresis electrode must cover at least 2 in2. The minimum sample weight using this method is 75 milligram (mg).