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Study on the initial velocity distribution of exhaled air from coughing and speaking.

Authors
 Soon-Bark Kwon  ;  Jaehyung Park  ;  Jaeyoun Jang  ;  Youngmin Cho  ;  Duck-Shin Park  ;  Changsoo Kim  ;  Gwi-Nam Bae  ;  Am Jang 
Citation
 CHEMOSPHERE, Vol.87(11) : 1260-1264, 2012 
Journal Title
CHEMOSPHERE
ISSN
 0045-6535 
Issue Date
2012
MeSH
Adult ; Air* ; Cough* ; Exhalation ; Female ; Humans ; Male ; Rheology ; Speech* ; Young Adult
Keywords
Airborne pathogens ; Angle ; Bioaerosols ; Particle Image Velocimetry (PIV) ; Velocity
Abstract
Increasing concerns about the spread of airborne pathogens such as severe acute respiratory syndrome (SARS) and novel swine-origin influenza A (H1N1) have attracted public attention to bioaerosols and protection against them. The airborne pathogens are likely to be expelled from coughing or speaking, so the physical data of the exhaled particles plays a key role in analyzing the pathway of airborne viruses. The objective of this study was to analyze the initial velocity and the angle of the exhaled airflow from coughing and speaking of 17 males and 9 females using Particle Image Velocimetry (PIV) and acrylic indoor chamber. The results showed that the average initial coughing velocity was 15.3 m/s for the males and 10.6 m/s for the females, while the average initial speaking velocity was 4.07 m/s and 2.31 m/s respectively. The angle of the exhaled air from coughing was around 38° for the males and 32° for the females, while that of the exhaled air from speaking was around 49° and 78° respectively. Also, the linear relation between the tested subject's height and their coughing and speaking velocity was shown in this study.
Full Text
http://www.sciencedirect.com/science/article/pii/S0045653512000987
DOI
22342283
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Preventive Medicine (예방의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Chang Soo(김창수) ORCID logo https://orcid.org/0000-0002-5940-5649
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/89941
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