Hyunjun Yun

TL;DR: In this article, the dry-bulb temperature, relative humidity, the airflow velocity, and the globe temperature were measured at 10 randomly selected kindergartens from April to June, 2013, and a survey was conducted three times a day for 119 kindergarten children to investigate their thermal comfort, clothing insulation, and metabolism.

TL;DR: In this article, the average indoor concentrations of fine particles less than 2.5μm were collected from inside ten childcare centers, and from their adjacent outdoor environments in Seoul, Korea during the summer, autumn and winter seasons.

TL;DR: In this article, the indoor air quality measured at elementary schools in Seoul, Korea showed generally low levels of pollutants due to low occupancy and adequate ventilation and the indoor levels of PM10 and TBC in schools near roadways were significantly lower than other surrounding environments due to dispersion of pollutants, without obstruction by buildings and mountains.

TL;DR: A significant association between COVID-19 prevalence patterns and health outcomes is indicated and the air quality index (AQI) improved significantly, with a focus on reducing exposure to sensitive groups.

TL;DR: In recent years, several epidemics by transmissible respiratory viruses have emerged, especially pandemics caused by coronaviruses, and the most significant public health emergency may be the COVID-19 pandemic.