A survey of visual transformers

Y Liu, Y Zhang, Y Wang, F Hou, J Yuan… - … on Neural Networks …, 2023 - ieeexplore.ieee.org
Transformer, an attention-based encoder–decoder model, has already revolutionized the
field of natural language processing (NLP). Inspired by such significant achievements, some …

The impact of COVID 19 on air pollution levels and other environmental indicators-A case study of Egypt

MK Mostafa, G Gamal, A Wafiq - Journal of environmental management, 2021 - Elsevier
The outbreak of coronavirus disease (COVID-19) not only affected health and economics,
but also its effect extended to include other aspects, such as the environment. Using Egypt …

Ozone and SOA formation potential based on photochemical loss of VOCs during the Beijing summer

J Zhan, Z Feng, P Liu, X He, Z He, T Chen, Y Wang… - Environmental …, 2021 - Elsevier
Volatile organic compounds (VOCs) are easily degraded by oxidants during atmospheric
transport. Therefore, the contribution of VOCs to ozone (O 3) and secondary organic aerosol …

Source apportionment of VOCs based on photochemical loss in summer at a suburban site in Beijing

Y Wu, X Fan, Y Liu, J Zhang, H Wang, L Sun… - Atmospheric …, 2023 - Elsevier
Highlights•Photochemical reaction significantly influenced the VOC concentration.•
Photochemical loss accounted for 26.3% initial alkenes and 13.1% initial aromatics.•Vehicle …

Source apportionments of atmospheric volatile organic compounds in Nanjing, China during high ozone pollution season

MY Fan, YL Zhang, YC Lin, L Li, F Xie, J Hu, A Mozaffar… - Chemosphere, 2021 - Elsevier
Atmospheric volatile organic compounds (VOCs) are not only harmful to human health, but
also lead to ozone (O 3) formation. From July 3 to August 1 of 2018, online measurements of …

[HTML][HTML] Effect of photochemical losses of ambient volatile organic compounds on their source apportionment

B Liu, Y Yang, T Yang, Q Dai, Y Zhang, Y Feng… - Environment …, 2023 - Elsevier
Photochemical losses of ambient volatile organic compounds (VOCs) substantially affect
source apportionment analysis. Hourly speciated VOC data measured from April to August …

Spatial and temporal distributions and sources of anthropogenic NMVOCs in the atmosphere of China: a review

F Wang, W Du, S Lv, Z Ding, G Wang - Advances in Atmospheric Sciences, 2021 - Springer
As the key precursors of O3, anthropogenic non-methane volatile organic compounds
(NMVOCs) have been studied intensively. This paper performed a meta-analysis on the …

Characteristics and sources of VOCs in a coastal city in eastern China and the implications in secondary organic aerosol and O3 formation

Z Zhang, Y Sun, J Li - Science of The Total Environment, 2023 - Elsevier
Volatile organic compounds (VOCs) play an essential role in the formation of secondary
organic aerosol (SOA) and O 3. However, our understanding of the characteristics and …

Source, temporal variation and health risk of volatile organic compounds (VOCs) from urban traffic in harbin, China

L Xuan, Y Ma, Y Xing, Q Meng, J Song, T Chen… - Environmental …, 2021 - Elsevier
The main of this work investigated the levels, emission sources, and associated health risks
of ambient volatile organic compounds (VOCs) closed urban traffic trunk from June 2017 to …

Characteristics, sources and health risks assessment of VOCs in Zhengzhou, China during haze pollution season

D Zhang, B He, M Yuan, S Yu, S Yin… - Journal of Environmental …, 2021 - Elsevier
Zhengzhou is one of the most haze-polluted cities in Central China with high organic carbon
emission, which accounts for 15%-20% of particulate matter (PM 2.5) in winter and causes …