Currently, there are no specific guidelines on the most effective materials and designs for facemasks to minimize the spread of droplets from coughs or sneezes to mitigate the transmission of COVID-19. While there have been ...
General Physics
Jun 30, 2020
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11368
Face masks reduce the risk of spreading large COVID-linked droplets when speaking or coughing by up to 99.9 percent, according to a lab experiment with mechanical mannequins and human subjects, researchers said Wednesday.
General Physics
Dec 23, 2020
21
6323
Are cellulose nanocrystals harmful to human health? The answer might depend on the route of exposure, according to a review of the literature by a Virginia Tech scientist, but there have been few studies and many questions ...
Bio & Medicine
Mar 9, 2015
0
41
Ambient fine particulate matter (PM2.5) is the world's leading environmental health risk factor. At only 2.5 micrometers or smaller, these particles are small enough to be inhaled and cause respiratory problems, such as asthma ...
Environment
Sep 6, 2023
0
103
For generations, people have used chlorine bleach to clean and disinfect their homes. However, researchers have now discovered that bleach fumes, in combination with light and a citrus compound found in many household products, ...
Environment
Oct 2, 2019
2
144
Researchers at the University of Leeds are developing a way to 'barcode' viral diseases to rapidly test new outbreaks for potentially lethal mutations.
Cell & Microbiology
May 13, 2012
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0
(Phys.org) —We all know that trees produce oxygen and help improve air quality.
Environment
Sep 3, 2014
0
2
The bulldog is a beloved British icon, according to a new study—one that is in very poor shape.
Veterinary medicine
Aug 4, 2022
1
36
E-cigarette use is rising, particularly among young adults and teens. Recent illnesses and deaths attributed to vaping have caused intense scrutiny of the chemicals in e-liquids and vapor, but little is known about the size ...
Analytical Chemistry
Jan 8, 2020
0
40
Exposure to toxic air both indoors and out kills some 600,000 children under the age of 15 each year, the World Health Organization warned Monday.
Environment
Oct 29, 2018
0
58
