According to the World Health Organization, particulate matter (2.5 m) is responsible for more than 4 million deaths worldwide. In real-time, low-cost sensors have assisted in measurement of PM indoors. SentiAir, a instrument used this study, monitors (1, 2.5, and 10), as well nitrogen dioxide, sulphur carbon ozone, temperature, relative humidity. The goal study was place sensor typical househo...

Abstract The world has 1.4 billion passenger vehicles. How should governments regulate their air pollution emissions? A Pigouvian tax is technologically infeasible. Most countries instead rely on exhaust standards that limit emissions per mile for new We assess the effectiveness and efficiency of these standards, which are centerpiece U.S. Clean Air Act regulation transportation, counterfactual...

Effective efficiency evaluation is one of the important parameters in designing and selection SAH. In this research article author have evaluated effective SAH using different coarseness configuration attached to underside collector used by various research. Correlation developed researchers for has been efficiency. each compared suggested that which be on basis comparison.