  UVC radiation has been recently used to disinfect hospital, daycare and
public places. It can be used to reduce bacteria by deactivating their DNA. Our
work is to examine the effectiveness of UVC radiation (254 nm) in inactivating
the SkinBorn bacteria. Mathematical models of these microorganisms placed in
different positions on a human skin have been developed and solved numerically.
Heat transfer equation is linked to Lambert Beer relationship by taking into
account the conduction, the convection and the radiation phenomena. The
experimental set-up is realized in order to verify our purposes. Swabs from
skin and under nails of different individuals were inoculated on nutrient agar
plates. Our experimental results achieved 97.43% of microorganisms killing.
Both experimental and numerical results demonstrate that secured using of UVC
is extremely effective in killing bacteria without damaging the human skin.
