COVID-19 Lockdowns Improve Air Quality in the South-East Asian Regions, as Seen by the Remote Sensing Satellites by Abirlal Metya, Panini Dagupta, Santanu Halder, S. Chakraborty, Yogesh K. Tiwari

“…This study is helpful to policy makers in mitigating the air-pollution on a long-term perspective.…”
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Improvement of Air Quality during the COVID-19 Lockdowns in the Republic of Slovenia and its Connection with Meteorology by Maja Ivanovski, Petra Dolšak Lavrič, Rudi Vončina, Darko Goričanec, Danijela Urbancl

“…Abstract Due to COVID-19 countermeasures, air quality temporarily improved in several countries around the world, especially in urban areas. …”
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Temporal Analysis of Changes in Anthropogenic Emissions and Urban Heat Islands during COVID-19 Restrictions in Gauteng Province, South Africa by Lerato Shikwambana, Mahlatse Kganyago, Paidamwoyo Mhangara

“…Consequently, these unprecedented restrictions resulted in reductions in traffic volumes and industrial activities in most urban areas across the world. Thus, it was hypothesised that these reductions in traffic congestion and industrial activities in cities would reduce both air pollutants and thermal radiation. …”
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Environmental Disinfection Based on Mobile Intelligent Networking Highly Efficient Ultraviolet Light Machines by Chun-Yen Chung, Wen-Tsai Sung, Lin-Chi Wang, Lailatus Siami, John Paul Santos

“…Abstract Since 2019, the world has suffered from the outbreak of the “Coronavirus Disease (COVID)-19 pandemic. …”
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Source Apportionment of Urban Ammonia and its Contribution to Secondary Particle Formation in a Mid-size European City by Laura Ehrnsperger, Otto Klemm

“…The NH3 mixing ratio was rather high (mean: 17 ppb) compared to other urban areas and showed distinct diurnal maxima around 10 a.m. and during the night at 9 p.m. …”
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Chronic Obstructive Pulmonary Disease and Lung Cancer Mortality Attributed to Air Pollution in Türkiye in 2019 by Didem Han Yekdeş, Ali Cem Yekdeş, Ülfiye Çelikkalp, Pelin Sarı Serin, Miraç Çağlayan, Galip Ekuklu

“…Lung cancer and COPD mortality data were collected from the official website of the Turkish Statistical Institute by a special request. Mortality rates attributed to PM2.5 were calculated with the WHO AIRQ+ program, and the monthly percent change (MPC) in air pollution level was computed by the JP regression method. …”
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Impact of Mixed Sources on the Atmospheric Aerosols of Urbanized Areas in the Philippines by Preciosa Corazon B. Pabroa, Joseph Michael D. Racho, John Robin Yee, Lawrence Adrian Tacliad, Haron Deo Vargaz, Iara Chantrelle V. Coronel, Raymond J. Sugcang, Christian Mark G. Salvador

“…The average fine (coarse) aerosols of Valenzuela, Manila, and Boracay were 26.7 (80.4), 27.9 (86.6), and 20.9 (124.6) μg m−3, respectively, which all exceeded the recent annual limits of the World Health Organization. …”
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Analysis of Air Quality and Health Co-Benefits under Low Carbon Pathway in Taiwan by Hsin-Chih Lai, Shih-Ming Chung, Li-Ling Li, Wen-Yinn Lin, Min-Chuan Hsiao

“…This study demonstrates that implementing carbon reduction strategies in the power sector would lead to a slight increase in ozone concentration. In detail, the annual PM2.5 concentrations would decrease by 0.7 µg m–3 (4%) from BAU (Business As Usual) scenario, while the O3 concentrations would have an increase of 0.3 ppb (1%). …”
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Emission Characteristics of Volatile Organic Compounds from Typical Coal Utilization Sources: A Case Study in Shanxi of Northern China by Yang Xu, Hualong Yu, Yulong Yan, Lin Peng, Rumei Li, Cheng Wang, Zhiyong Li

“…Abstract China, where coal is the dominant energy resource, accounted for 50.5% of the world’s coal consumption—or 1906.7 million tons of oil equivalent—during 2018. …”
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Impact of the COVID-19 Event on Trip Intensity and Air Quality in Southern China by Shun Wan, Kangping Cui, Ya-Fen Wang, Jhong-Lin Wu, Wei-Syun Huang, Kaijie Xu, Jiajia Zhang

“…Abstract The COVID-19 epidemic discovered and reported at the end of December 2019 and began spreading rapidly around the world. The impact of the COVID-19 event on the trip intensity, AQI (air quality index), and air pollutants, including PM2.5, PM10, SO2, CO, NO2, and O3 in Shenzhen, Guangzhou, and Foshan (the so-called ‘three cities’) from January 12 to March 27, in 2019 and 2020, are compared and discussed. …”
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Impact of COVID-19 on the Air Quality over China and India Using Long-term (2009–2020) Multi-satellite Data by Manish Soni, Sunita Verma, Hiren Jethava, Swagata Payra, Lok Lamsal, Priyanshu Gupta, Janhavi Singh

“…The criteria air quality indicators i.e., nitrogen dioxide (NO2), sulphur dioxide (SO2), Aerosol Index (AI) and aerosol optical depth (AOD) data are retrieved from the Ozone Monitoring Instrument (OMI), TROPOspheric Monitoring Instrument (TROPOMI), and MODerate Resolution Imaging Spectroradiometer (MODIS) sensor on the Terra and Aqua satellites, respectively. …”
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Validation of In-field Calibration for Low-Cost Sensors Measuring Ambient Particulate Matter in Kolkata, India by Siddharth Nobell, Arnab Majumdar, Shovon Mukherjee, Sukumar Chakraborty, Sanjoy Chatterjee, Soumitra Bose, Anindita Dutta, Sandhya Sethuraman, Daniel M. Westervelt, Shairik Sengupta, Rakhi Basu, V. Faye McNeill

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Co-effects of COVID-19 and Meteorology on PM2.5 Decrease in Ho Chi Minh City, Vietnam: A Comparison of 2016–2019 and 2020–2021 by Cong-Thanh Tran, Le My Thuan Nguyen, Tzong-Gang Wu, Chang-Fu Wu, To Thi Hien, Kuo-Liong Chien

“…Abstract The coronavirus disease 2019 (COVID-19) measures during 2020–2021 may lead to a downward trend of fine particulate matter (PM2.5) concentrations in Ho Chi Minh City (HCMC), which is one of the most air-polluted cities in Vietnam. …”
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Emission Characteristics of Hazardous Air Pollutants from Construction Equipment by Sungwoon Jung, Sunmoon Kim, Yunsung Lim, Jongtae Lee, Taekho Chung, Heekyoung Hong, Sunhee Mun, Seunghwan Lee, Woojun Jang, Jaehyun Lim

“…The characteristics and chemical composition of the emitted regulated pollutants (carbon monoxide (CO), non-methane hydrocarbon (NMHC), nitrogen oxide (NOx), and particulate matter (PM)) and hazardous air pollutants (HAPs), e.g., volatile organic compounds (VOCs), aldehydes, and polycyclic aromatic hydrocarbons (PAHs), were then determined. …”
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Chemical Composition Characteristics and Source Apportionment of PM2.5 in Ceramic Industrial Base during Winter by Xiang Tu, Xiaozhen Fang, Hansun Fang, Changlin Ye, Zugen Liu, Xuehui Jia, Dan He, Jinliang Wang, Hong Huang, Changwei Zou, Chenglong Yu

“…The chemical mass balance (CMB) model, backward trajectory method and potential source contribution function model, etc. were used to track and identify possible sources and contributions in the formation of the PM2.5. The results showed that the average PM2.5 concentration during sampling period was 134 ± 74.7 µg m−3, which exceeding World Health Organization (WHO) Air Quality Guidelines levels. …”
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Quantitative Performance Analysis of Respiratory Facemasks Using Atmospheric and Laboratory Generated Aerosols Following with Gamma Sterilization by Amit Kumar, D. N. Sangeetha, Ramani Yuvaraj, M. Menaka, Venkatesan Subramanian, Balasubramanian Venkatraman

“…The reduction in FE for N95 mask after sterilization is associated with the reduction of electrostatic interaction of filter medium with particles laden in the air stream. Instead of disposing of N95 masks after a single use, they can be reused a few times as N70 mask during this pandemic crisis after sterilisation. …”
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Implementasi Algoritma BFCC dan kNN pada Embedded System untuk Deteksi Dini Bronchitis by Septiyo Budi Perkasa, Barlian Henryranu Prasetio, Eko Setiawan, Edita Rosana Widasari, Dahnial Syauqy

“…The results obtained an average computation time of 4.452 seconds and CPU usage of 26%, and kNN accuracy of 73% from the calculation of the Euclidean distance with a neighbor value = 5. …”
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Spatiotemporal Assessment of PM2.5 Exposure of a High-risk Occupational Group in a Southeast Asian Megacity by Jarl Tynan Collado, Jose Gabriel Abalos, Imee de los Reyes, Melliza T. Cruz, Gabrielle Frances Leung, Katrina Abenojar, Carlos Rosauro Manalo, Bernell Go, Christine L. Chan, Charlotte Kendra Gotangco Gonzales, James Bernard B. Simpas, Emma E. Porio, John Q. Wong, Shih-Chun Candice Lung, Maria Obiminda L. Cambaliza

“…From all 15-second measurements obtained, the mean concentration of PM2.5 is 36.4 µg m−3, seven times greater than the mean annual guideline value (5.0 µg m−3) set by the World Health Organization (WHO). …”
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The Covid-19 Era: An Examination of the 5G Conspiracy Theory and the Challenges of Educating Children in Nigeria by Kelechi Johnmary Ani

“…It recommends increased use of e-learning platforms to teach children in all government and private teaching establishments in Nigeria.…”
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