Benefits of Covid-19

[Piotrsko]

It has to be just my problem: 1 micron filtration is transparent for something that is smaller than 1 micron. Covid is 1/178 micron, riding exhaled breath in a mist it's .5 micron max.

Where do you see the bust support, or is my engineering become severely obsolete?

[freebeard]

Maybe it's just me but I see a Powergirl window above the logo and below upper strap. It was a joke, I could really use to lose 50lbs.

I have an overpressure fan running right now into a MERV 11 filter. That's one micron filtration. It's mainly for the dust from the train yard.

MERV Ratings|Filter Guide For MERV 8,11 & 13 Filters
[Search domain www.qualityairfilters.com/filter-guide/] https://www.qualityairfilters.com/filter-guide/
MERV ratings range from 1-20. MERV Scale 1-13. MERV Scale 14-20. Most residential home air systems can adequately remove airborne contaminants with a filter rated between MERV 8-13. MERV 14-20 are typically found in hospital and general surgery settings. The higher the MERV rating on a filter, the fewer dust particles and other contaminants can ...

MERV 20 would be things like chip fab plant clean rooms.

[oil pan 4]

I made what I call a filter fan.
I taped a fairly cheap 20 inch square filter to a 20 inch box fan. It's better than nothing.

[redneck]

.





>





.

[Fat Charlie]

Originally Posted by Piotrsko

It has to be just my problem: 1 micron filtration is transparent for something that is smaller than 1 micron. Covid is 1/178 micron, riding exhaled breath in a mist it's .5 micron max.

Actually, it looks to be .5 micron minimum.

Published data have suggested that sneezing may produce as many as 40 000 droplets between 0.5–12 μm in diameter that may be expelled at speeds up to 100 m/s, whereas coughing may produce up to 3000 droplet nuclei, about the same number as talking for five minutes. Despite the variety in size, large droplets comprise most of the total volume of expelled respiratory droplets. Further data on the behaviour of droplet dispersion in naturally generated aerosols are needed.

[redneck]

.

Question for RedDevil.

So, I was just looking at the Worldmeter site https://www.worldometers.info/coronavirus/

Deaths per million population

USA - 275 Deaths per million or Death rate of .0275% per million

Belgium - 784 Deaths per million or Death rate of .0784% per million

Serious question.

Does Belgium count their deaths “with” Covid 19 or “from” Covid 19...???

Here they’re being very liberal with cause of death and using the term Covid “related” and not “from”.

This is to say, at the very least, dishonest and vague .

I’m just curious, nothing else.




Now.

To try and keep things light hearted...

They say UFO sightings are down.




🙃

>

.

[RedDevil]

Originally Posted by redneck

.

Question for RedDevil.

So, I was just looking at the Worldmeter site https://www.worldometers.info/coronavirus/

Deaths per million population

USA - 275 Deaths per million or Death rate of .0275% per million

Belgium - 784 Deaths per million or Death rate of .0784% per million

Serious question.

Does Belgium count their deaths “with” Covid 19 or “from” Covid 19...???

Here they’re being very liberal with cause of death and using the term Covid “related” and not “from”.

This is to say, at the very least, dishonest and vague .

I’m just curious, nothing else.

I can't say for certain about Belgium(*), but I guess it is more or less the same as for the Dutch: Deaths (and infections for that matter) are only attributed to COVID-19 when the patient has either tested positive or got ill after contact with a proven case and has the right symptoms.

In some cases the count has been adjusted (upwards) well after the fact like when a home of the elderly had massive loss of life and the deceased all had COVID-19 symptoms but none was tested. In that case it would be very unlikely they did not have COVID-19, so that makes sense.

Nonetheless, a week ago we had about 5,500 fatalities attributed to COVID-19 while the excess death toll over the last 2½ months compared to the same period last year was about 9,000; one may assume about 3,500 people died of COVID-19 without being counted as such.

Tests on donor blood samples showed about 3% of them had antibodies for SARS-CoV2. That is way more than the official 0,25% of Corona cases.
But there are tests under way using blood plasma from COVID-19 recoverees in new patients to let the antibodies in the plasma mark the virus for destruction by the patients own immune system.
Many blood donors know that; so those who recovered volunteer en masse while those who have not yet been ill avoid hospitals like anybody else, so the blood sample test results are affected.

In Iceland there were true blind test samples that also had a 3% infection rate IIRC while only 0.5% was accounted for (suggesting only 1 in 6 infections get noticed), but then again Iceland is a typical community and its data may not compare with other countries.

I work in IT.

https://dilbert.com/strip/2020-05-08

(*) Belgium has twice as many deaths per capita than the Netherlands. I bet that's due to a relatively large immigration of Italians just after WW2, and family ties and visits accelerated the infections in February and March when Italy was already hit hard.

[serialk11r]

Originally Posted by oil pan 4

I made what I call a filter fan.
I taped a fairly cheap 20 inch square filter to a 20 inch box fan. It's better than nothing.

For cleaning indoor air for health purposes this is perfectly fine. A MERV 11 or 13 filter will only pick up a fraction of sub micron particles, but since it's recirculating, it'll eventually trap a large portion of them.

For destroying viruses (and other pathogens), a UV-C lamp is probably more useful than a better filter.

The only issue with the box fan filter is that a box fan is meant for low pressure drop and has all that open area where back flow can occur. You can use a cardboard cutout to block off the edges and stand off the filter from the fan as a makeshift shroud to improve its performance.

For the purposes of avoiding exposure to the virus outside, you need true "HEPA" level filtration. I've been walking around with a P100 mask which supposedly catches >99.9% of viruses.

[Piotrsko]

Cdc changed stuff to mostly human to human contagion with object to human contagion "minimal" No humans, should be no contamination even from licking your shoes.

[freebeard]

As things wind down, the benefit dwindle. Eventually, we'll just segue into the Golden Age.

We've lost John Prine, but Ray Stevens is still recording. ....he just doesn't have much to say:

https://www.youtube.com/watch?v=qtjceaknzHQ

.... other than "I'm washing my hands like a raccoon with OCD."