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The density of the MN can also play a significant role in skin penetration [186]. The “Bed of nails effect” is a phenomenon that takes place when the density is high, and this also negatively affects the insertion [200]. The shape of the MN—which is either conical, pyramidal, or ...
Results further suggested that groundwater contamination was widespread regardless of land cover, due to the widespread presence of pit latrines, pigs, and cows on the landscape, and that human users were consistently subject to health risks from potential pathogens as a result. Given that both ...