The audio component centers around the SS8550 PNP transistor (Q1) which serves as a driver for the passive buzzer (BZ1). This ...

"The air quality health index relates to health risk with local pollution levels and is easy to use. The index is measured on a number and a colour scale of one to 10 plus, and labels the health ...

An air monitoring system is the process of using electronic devices to measure the concentration of contaminants in the air. Jason Myers from the Louisiana Department of Environmental Quality gave ...

Health risks for children exercising in an air-polluted environment can be reduced by monitoring air quality with low-cost particle sensors. Scientific Reports 13 (1); 18261. do i: 10.1038 ...