Would it be possible for a theoretical mathematician an expert in aerosole transmission and or ventillation to collaberate on the realtime effects of varying degrees of Ventilation vs Space Vs Children within a good safety margin in respect to classroom sizes and no. of students.
Some other parameters:
Air Changes and co2 monitoring.
Standard room sizes and cohort pupil sizes.
Volume of air in room (not all ceiling heights same.)
Movement to from classrooms. Length of lessons. etc.
A Cost benefit calculation could then be made in respect of price of equiptment vs cost to pupil numbers, education etc.

Or has this already been done addressed ?
If it hasnt been done this would make for some demonstrable evidence that would be difficult to ignore and would help children all over the world.

I ask this also to address the disappointment expressed by aerosol scientists with regard to the recent school cdc paper.
I hope someone is able to find the time to See this.
<--- My clumsy attempt to collide the spheres of aerosol experts and theoretical mathematitions in order to make a big enough Bang! that it can be heard by all.
*UPDATE Good News!

This has mostly already been done:

Dr. Alex Huffman Strikes again!
@HuffmanLabDU

I would still venture it would still be useful for:

Sarah Rasmussen
@SarahDRasmussen

To have a cursory look over all of this if her interest gets peeked and she is gifted any free time from her busy schedule.
*Note not to dispute data, more of an application efficacy as above perhaps involving strain infectiousness rates.
Just pooling additional information :

"A mathematical framework for estimating risk of airborne transmission of COVID-19 with application to face mask use and social distancing"

aip.scitation.org/doi/10.1063/5.…
pooling additional information :

"Effects of ventilation on the indoor spread of COVID-19"
cambridge.org/core/journals/…
pooling add info:

Air Cleaner Calculator: *to get ACH

docs.google.com/spreadsheets/d…
About to state I have just wasted an entire day going through all these Study's.

However that is not true.
This is WHY

I now realise the work I proposed
HAS ALREADY BEEN DONE

I can not imagine how frustrated you all are.
This is predominantly a publicity issue.
*NEEDS SCREAMING FROM THE ROOFTOPS!

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Concerned Citizen

Concerned Citizen Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @Concern14923094

14 Feb
Trying to understand CO2 as a control.

I understand this is a simplification.
Q1

If: (background CO2) = (x)ppm "15 Students 1 Teacher"

If: control for infection risk is = +750ppm CO2

Room after 3 hours use =
CO2 meter reading rises to (x)+750 ppm

It is at this point:
CO2 meter reading =>"equal to or greater than"
(x)+750ppm that it becomes unsafe.
Q2

If so does it follow that using a 25ppm buffer

as long as:

CO2 meter reading =< "equal to or less than"
(x)+725ppm

it remains safe for as long as this remains so.
Read 8 tweets
13 Feb
Catchphrase:

HEPA plus Ventilation "IS" the Facemask of the Classroom!

"Everyone needs to find a way to understand this"
This is a simplified version obviously:

*=Relative Effect of

"(Volume of Area)+(*Masks)+(*HEPA)+(*Ventilation)+(*Distancing)=(Room Time)"

(Distancing=(calculation of *Masks+*HEPA+*Ventilation)
Therefore in respect of School Classrooms:

"(Classroom HxWxL)+(*Masks)+(*HEPA)+(*Ventilation)+(*Pupil Spacing)=(Classroom Time)"

(Pupil Spacing=(calculation of *Masks+*HEPA+*Ventilation)
Read 11 tweets
12 Feb
The current

"GOLD STANDARD" for Schools and Education !

America leads by example.

Operational Strategy for K-12 Schools through Phased Mitigation

cdc.gov/coronavirus/20…
1. Consistent implementation of layered mitigation strategies to reduce transmission of SARS-CoV2 in schools
2. Indicators of community transmission to reflect level of community risk
3. Phased mitigation and learning modes based on levels of community transmission
"additional layers of COVID-19 prevention in schools:
• Testing to identify individuals with SARS-CoV-2 infection to limit transmission and outbreaks
• Vaccination for teachers and school staff, and in communities, as soon as supply allows
Read 10 tweets
12 Feb
A glimmer of hope:

FINALLY FULL RECOGNITION !!!
#COVIDisAirborne

Fiona Bruce:
"I`m a Doctor in Melbourne vaccinations alone are not going to be enough"

"we need input from occupational hygienists, aerosol experts and ventilation engineers"
"why is there not national guidance which accepts the reality that airborne transmission is an important mode of spread for this virus and adopts the precautionary principle to protect workers from the airborne spread of this virus with fit tested n95 masks and other measures."
Read 17 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!