Yanxin Tu, Kaushik Sarkar, Nadia Svirydzenka, Zoe Palfreyman, Yvonne Karen Parry, Matthew Ankers, Priti Parikh, Raghu Raghavan, Monica Lakhanpaul
Interventions to promote the health and well-being of children under 5s experiencing homelessness in high-income countries: a scoping review
BMJ open
considering hazardous effects particulate matter pm exposure students teachers high pm concentration issue south korea air purifiers recently installed classrooms improve air quality however onsite challenges operational costs noise issues continuous operation air purifiers therefore guideline needed dynamically predict indoor pm concentration based changes outdoor pm concentration activate air purifiers necessary study develops greybox model uses measured data physical differential equations perform given objective verifies accuracy using astm d5157 modeling analysis results obtained information form basis developing guidelines address pm issues schools air purifier operated periods predicted values exceed limit closed windows air purifier operating also confirmed need operation air purifier varies schools classrooms outdoor pm concentration indoor pm concentration increased significantly students simultaneous mass movement necessitating air purifiers operation events prefilter heater also aided removal coarse pm additionally limitations future development directions model discussed