Old schools with low airtightness performance are vulnerable to outdoor fine dust. Air purifier and ventilation systems typically used improve indoor air quality. However, due the noise that these generate, some classrooms do not operate mechanical facilities despite deterioration of This study aimed propose a operation method for appropriate improvement quality through CONTAMW simulation while...

Air Pollution is one of the severe hazards which affect health quality all living beings and environment itself, especially in urban areas. It creates significant issues many countries harms human if its concentration exceeds tolerable levels. Monitoring these pollutants their concentrations a crucial preventative measure to alert public air area. The primary objective this paper design smart p...

Silver is an indispensable metal but its use has to be minimised for sustainable growth. Much of the silver lost during use is unrecoverable; an example being its use as an antimicrobial agent, a property known since ages. While developing methods to create an affordable drinking water purifier especially for the developing world, we discovered that 50 parts per billion (ppb) of Ag(+) released ...

Ionization air purifiers are increasingly used to remove aerosol particles from indoor air. However, certain ionization air purifiers also emit ozone. Reactions between the emitted ozone and unsaturated volatile organic compounds (VOC) commonly found in indoor air produce additional respirable aerosol particles in the ultrafine (<0.1 microm) and fine (<2.5 microm) size domains. A simple kinetic...