Repeated exposure to the UV radiation causes changing in the skin structure due to its ability to generate high level of reactive oxygen species (ROS), hence increase the risk of developing skin cancers and premature skin aging. Despite…

Hazardous gas detection is a tool specially developed to detect liquid petroleum gas and natural gas at the minimum concentration of gas in the air is 200 ppm and the maximum concentration of gas in the air is 10 000 ppm. Design and build a…