Air quality changes in NE Romania during the first Covid 19 pandemic wave

Spatial and temporal differentiation of air quality and its influence factors in 16 cities in Shandong Province from 2019 to 2020

“…Improvements in the air quality in many cities around the world have been reported (Table 1). [25][26][27][28][29][30][31][32] O 3 is a secondary pollutant formed through photochemical reactions between volatile organic compounds (VOCs) and nitrogen oxides (NO x ) in the presence of high temperatures and sunlight. 33,34 Several factors may have contributed to the counterintuitive trend of increased O 3 levels.…”

CFD simulation study and experimental analysis of indoor air stratification in an unventilated classroom: A case study in Spain

“…Moreover, research has demonstrated that substandard indoor environmental quality is not only linked to health complications [ 2 ], but also to the deterioration of cognitive functions, leading to a reduction in productivity by as much as 50 % [ [3] , [4] , [5] , [6] ]. The importance of both indoor and outdoor air quality has been amplified and is garnering heightened attention in the wake of COVID-19 [ [7] , [8] , [9] , [10] , [11] , [12] , [13] ].…”