Orthodontists generally use the Index of Orthodontic Treatment Needs (IOTN) to determine whether people qualify for further orthodontic treatment. This allows triaging of treatment resources to only those in greater need of treatment. At current…

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…