Previous in Forum: Pressure in a Sphere?   Next in Forum: Debt Forgiveness
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
19 comments
Rating: Comments: Nested
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800

The Five Year Mask

04/08/2020 4:16 PM

A half face mask with a uv-c sterilized air supply...pretty cool

..."Medi-Immune, a UK firm, recently revealed ProtectivAir, a breathing device that uses UVc light to sterilize inhaled air and protect wearers against airborne pathogens, potentially including SARS-CoV-2 (COVID-19). The device is meant to be used by healthcare staff and others with occupational exposure to airborne pathogens.

ProtectivAir consists of a nose and mouth mask that connects, via a flexible hose, to a small irradiation chamber worn on a belt or harness. The irradiation chamber uses UVc photons to disinfect inhaled air. UVc damages a pathogen’s DNA or RNA, which prevents it from replicating and infecting the body."...

https://www.medgadget.com/2020/03/protectivair-sterilizes-inhaled-air-using-uv-light.html

https://medi-immune.com/protectivair/

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
lyn
Guru

Join Date: Oct 2008
Posts: 42375
Good Answers: 1689
#1

Re: The Five Year Mask

04/08/2020 5:01 PM

Interesting, but.......Is the five year life, the life of the device, or how long it would take the average person to pay for it?

If this report ↓ is redundant, sorry.

To view report click here

If proven effective, could it ever be practical for anyone but the richest?

Recommendation Regarding the Use of Cloth Face Coverings | CDC
Register to Reply
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#4
In reply to #1

Re: The Five Year Mask

04/08/2020 6:26 PM

Don't worry the Chinese will have a $20 knockoff within a week...

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply Score 1 for Good Answer
Go to Next "Almost" Good Answer
Brave Sir Robin
Guru
Hobbies - DIY Welding - Wannabeabettawelda

Join Date: May 2007
Location: Annapolis, Maryland
Posts: 7822
Good Answers: 449
#9
In reply to #1

Re: The Five Year Mask

04/08/2020 10:17 PM

Not for average people . . .

"The device is meant to be used by healthcare staff and others with occupational exposure to airborne pathogens."
Register to Reply
2
JE in Chicago
Guru

Join Date: Apr 2008
Location: Chicago
Posts: 3990
Good Answers: 144
#2

Re: The Five Year Mask

04/08/2020 5:25 PM

This is the fifth place I've checked...

PLEASE tell me you have toilet paper in stock!?

__________________
 High Tolerance is Beautiful
Register to Reply Good Answer (Score 2)
Go to Next Good Answer
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#5
In reply to #2

Re: The Five Year Mask

04/08/2020 8:19 PM

Yes, but we have a 'one pallet per customer' limit....but you can come back tomorrow for more....

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
Rixter
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9691
Good Answers: 1109
#8
In reply to #5

Re: The Five Year Mask

04/08/2020 9:53 PM

We're ready for the next pandemic...the Strategic Toilet Paper Reserve...
Register to Reply
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#10
In reply to #8

Re: The Five Year Mask

04/08/2020 10:19 PM

Go big or go home!

In service to her royal Majesty the queen of toilet paper...

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#11
In reply to #10

Re: The Five Year Mask

04/08/2020 10:34 PM

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
dkwarner
Guru

Join Date: May 2006
Location: Placerville, CA (38° 45N, 120° 47'W)
Posts: 6172
Good Answers: 247
#12
In reply to #10

Re: The Five Year Mask

04/08/2020 11:17 PM

I had to enlarge it significantly to read it, but I love the label: "Who gives a Crap".

__________________
 Teaching is a great experience, but there is no better teacher than experience.
Register to Reply
6
artsmith
Guru
Hobbies - CNC - New Member Popular Science - Biology - New Member Hobbies - Musician - New Member

Join Date: Dec 2008
Location: Canada
Posts: 3524
Good Answers: 146
#3

Re: The Five Year Mask

04/08/2020 5:44 PM

Interesting choice of air intake position.

__________________
 incus opella
Register to Reply Good Answer (Score 6)
No more Good Answers. Go to first "Almost" Good Answer
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#6
In reply to #3

Re: The Five Year Mask

04/08/2020 8:22 PM

Included at no extra cost...

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply Score 1 for Good Answer
Go to Next "Almost" Good Answer
Rixter
Guru

Join Date: Apr 2010
Location: About 4000 miles from the center of the earth (+/-100 mi)
Posts: 9691
Good Answers: 1109
#7
In reply to #3

Re: The Five Year Mask

04/08/2020 9:41 PM

Recycling is good...?

Maybe the UV-C takes care of those stinky molecules...
Register to Reply Score 1 for Good Answer
Go to Next "Almost" Good Answer
midmomachine
Participant

Join Date: Apr 2020
Posts: 1
#19
In reply to #3

Re: The Five Year Mask

04/11/2020 12:32 PM

Just what i was thinking too But wasnt going to comment till started reading some of other comments lil off topic but considering the Worldly issues lil humor aint gonna hurt anyone except for the guy in pics pride A lil So Hear Goz AnyWay Maybe it just recycling the Air From Well You Know Where???

Register to Reply Off Topic (Score 5)
dkwarner
Guru

Join Date: May 2006
Location: Placerville, CA (38° 45N, 120° 47'W)
Posts: 6172
Good Answers: 247
#13

Re: The Five Year Mask

04/08/2020 11:25 PM

The five year limit could well be the lifetime of the plastic chamber. Most plastics don't hold up well when exposed to any kind of UV, and I expect that to be more so with UV-C. Teflon is definitely an exception, at least to Solar UV. I've had Teflon antenna insulators in the sun for nearly 50 years, with little or no visible degradation.

__________________
 Teaching is a great experience, but there is no better teacher than experience.
Register to Reply
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#15
In reply to #13

Re: The Five Year Mask

04/09/2020 4:26 PM

I would think the exposure to uvc would have minimal effect due to the shorter wavelength...the shorter wavelength would not penetrate the plastic surface....though mainly I think it would be due to limited ozone generation...

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
dkwarner
Guru

Join Date: May 2006
Location: Placerville, CA (38° 45N, 120° 47'W)
Posts: 6172
Good Answers: 247
#16
In reply to #15

Re: The Five Year Mask

04/11/2020 12:03 AM

I'm not sure. Most plastics are pretty good insulators, which commonly means they are transparent to EM waves, but whether that transparency continues up into those frequencies (or down into those short wavelengths), I don't know.

The articles I read on 222nm UV specifically said the waves were rapidly absorbed by organic materials like the outer layers of skin and the tear layer of the eyes. I didn't see anything about absorption in other materials, nor did I see anything about reflection. I do know that telescopes use different reflective coatings for different wavelengths, so it may not be trivial to find a good reflector for these wavelengths.

__________________
 Teaching is a great experience, but there is no better teacher than experience.
Register to Reply
SolarEagle
Guru

Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33107
Good Answers: 1800
#17
In reply to #16

Re: The Five Year Mask

04/11/2020 12:21 AM

Polished aluminum is a good reflector of uv light...

__________________
 All living things seek to control their own destiny....this is the purpose of life
Register to Reply
rdcress
Member

Join Date: Oct 2018
Posts: 6
Good Answers: 1
#14

Re: The Five Year Mask

04/09/2020 9:42 AM

I'm skeptical that the "contact" time is sufficient to kill or disable the pathogens. Given the small size, air velocity seems like it might be too fast through the chamber for any real efficacy. Is there any testing data that goes with it. Great idea but I'd like to see more data.
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
StandardsGuy
Guru
Popular Science - Cosmology - Let's keep knowledge expanding Engineering Fields - Retired Engineers / Mentors - Hobbies - HAM Radio - New Member

Join Date: Dec 2006
Location: North America, Earth
Posts: 4483
Good Answers: 105
#18

Re: The Five Year Mask

04/11/2020 11:17 AM

Cool. Considering the place it is mounted, the term recycling comes to mind. Hope it works on E-coli.

__________________
 “I would rather have questions that can't be answered than answers that can't be questioned.” - Richard Feynman
Register to Reply
Register to Reply 19 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

artsmith (1); Brave Sir Robin (1); dkwarner (3); JE in Chicago (1); lyn (1); midmomachine (1); rdcress (1); Rixter (2); SolarEagle (7); StandardsGuy (1)

Previous in Forum: Pressure in a Sphere?   Next in Forum: Debt Forgiveness

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
General Discussion:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (74 right now)
Show Members
Advertisement