Discover and read the best of Twitter Threads about #UVGI

Most recents (6)

1/8 "#Ultraviolet #germicidal #irradiation (#UVGI) is known to #inactivate various #viruses and #bacteria, including #SARSCoV2, and is widely applied especially in #medical facilities."

#COVID19 #CovidIsNotOver #COVIDisAirborne…

An abstract thread 🧵...
2/8 "This #inactivation results from the #high #photon #energies causing #molecular #bonds to break, but when #nonpathogen #molecules are affected, #unwanted #effects may occur."
3/8 "Here, we explored the effect of a commercial high-intensity (∼2 kW) #UVC #disinfection device on the #composition and #concentration of #gases and particles in #indoor #air."
Read 8 tweets
#UVGI #disinfection method kills or inactivates #microorganisms by destroying nucleic acids and disrupting their #DNA
- It's wonderful that Mr. Zero O'Hönö and Jauho-Marin obeyed the order to spend at least 3 minutes #sterilizing in the room before going to the meeting hall. ImageImage
#Sunlight spectrum contains strong #ultaviolet radiation. (#UV Light Is Safe for Humans but Bad for #Bacteria and #Viruses)
1940s UV Light Documentary: Ultraviolet Light Educational Film (For Dummies)
CharlieDeanArchives | 18.2.2013
Read 4 tweets
COVID-19: The actual current state of the pandemic

Many people are claiming the pandemic is over but this long thread highlights the impact all around us that is rarely reported in the media. Image by @c_9. 🧵1/ Image of bare pharmacy shelf with no pediatric fever, pain,
While COVID-19 isn't directly responsible for all the current issues we are facing, it has pushed an already frail healthcare system into the crisis we are now experiencing. Read on to find out the impact. 2/
Hundreds of Canadians are still dying every week from COVID-19 and more people have died in 2022 this year so far than all of 2021 or 2020 (… ). People of all ages are dying, the most being age 50+ but many under 80. 3/ Image showing total COVID deaths in Canada are higher in 202
Read 42 tweets
"Indoor Air Management of Airborne Pathogens: Lessons, Practices, and Innovations"…

Workshop by @theNASEM focusing on the current state of knowledge ➡️ practical lessons learned. Session 1 starting now.

Live-tweets below
#EHMI #NASEM #EnviroHealthMatters ImageImage
2/ @Don_Milton summarizes evidence that saliva PCR much better at catching COVID positive cases than PCR from nasal swabs. ImageImage
3/ @Don_Milton: It's the *combination* of masks, ventilation, filtration that can dramatically reduce spread Image
Read 66 tweets
Highly recommended! Detailed summary of the main engineering controls for airborne infection control to reduce transmission indoors:
#Ventilation #Filtration #UVGI
#DoAllTheThings! Implement multiple engineering controls to reduce airborne infection and improve indoor air quality
#UVGI Image
If you want a partial data dump of my brain, the Time Magazine article is a great summary.…
Read 4 tweets
The air cleaner purchased by @nseducation for schools has a Clean Air Delivery Rate almost HALF of a common retail unit and may create secondary products by reacting with gas phase contaminants in a poorly ventilated room using photocatalytic oxidation #nspoli /1 Guardian Beyond Air F159E: ...
As seen in the photo, it's not running on its highest setting. For #ventilationequity in non-mechanically ventilated classrooms, should be a min 15 CFM per person, or 375 CADR for 25 people, AND at an acceptable noise level. How many per classroom? #DoTheMath! /2
Don't get me wrong, any filtration is better than nothing! But it's a mere band-aid over a gaping wound.
A DIY $120 #corsirosenthalbox will beat the air cleaners purchased by @nseducation AND can be used in STEM lessons! See /3 Screen capture of web site
Read 15 tweets

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