Coronavirus pandemic

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Dennis P Brown
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Re: Coronavirus pandemic

Post by Dennis P Brown » Mon Jun 29, 2020 6:19 pm

An excellent frontline report at a hospital ICU for Corona-19:

https://www.cnn.com/videos/health/2020/ ... ay-vpx.cnn

There is just so much still not known and much now only suspected - this virus is certainly something current human systems have never seen so how various people react is and can be very different: from no effect (maybe) or symptoms, to serious organ damage with still no apparent illness symptoms (!) to, of course, death.

Using masks and handwashing are critical if this virus is to be stopped.

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Dennis P Brown
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Re: Coronavirus pandemic

Post by Dennis P Brown » Thu Jul 02, 2020 6:21 pm

Another rather frigthening video but the details are rather informative (but warning, this isn't easy to watch).

Turns out people in their 20's are getting so ill they are struggling to survive when massive lung damage occurs; this vid also explains why a ventilator is killing so many and how the special 'heart/lung' machine is working far better and why; however, in Texas they don't have enough machines or beds to handle the huge surge that is sweeping across main parts of the country that had previously opened. The difficultly of deciding who gets beds for the ICU and who can't is presented.

As a scientist facts are facts and this - while slanted - still provides essential facts. We must avoid filling too many ICU beds if the upward trend of people surviving Covid is to continue.

This virus does kill some young people and can sereverly damage even more young people's organs. Best to wear a mask; wash hands as needed and take this seriously; this isn't the flu nor a virus we've been exposed to before and so much is only now being learned. Play it safe and err on the side of caution.

(The first minute is standard news before they start the vid on covid unit at the Texas hospital.)

https://youtu.be/jQlTC4sUznM

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Richard Hull
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Re: Coronavirus pandemic

Post by Richard Hull » Thu Jul 02, 2020 8:50 pm

Young folks think they are invincible, until they aren't. Pinned up like prisoners Feb-June once the pin gate swung open just a tiny amount, they pour out into the direct blast of covid in bars and party hardy. Who would have guessed it??

I have partied hardy with a very limited group of friends who have no kids. We are in our 70's. No masks, no issues. The young are those going out into the germ zoo with abandon. My motto is never approach or get near the young under any circumstance. Thank goodness the young and I have virtually nothing in common on a personally, connective, interactive basis. I work with the young here on fusor. net but that is about the extent of it. For the young here are trying to learn and do.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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Frank Sanns
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Re: Coronavirus pandemic

Post by Frank Sanns » Thu Jul 02, 2020 8:58 pm

I am astonished how cavalier many people are about this virus. (I am not taking about an outdoor distancing event like Richard has). Even with a mask and gloves, the risk is non zero. Groceries, gasoline pumps, door handles, mail, passing cars, and on an on. No place is immune. Numbers are starting to take off now. Much faster than in March. Death rates will also climb after a 2-3 week lag. We have a problem Houston.
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Dennis P Brown
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Re: Coronavirus pandemic

Post by Dennis P Brown » Thu Jul 02, 2020 11:32 pm

Both Richard and Frank make excellent points; I'll add these points to re-enforce the issues at hand:

Hand soap (or any soap) used to wash hands for 20 seconds will inactivate and hence 'destroy' 100% of any COVID-19 virus. Properly washing your hands is a great method to help protect yourself. (Aside: strange I have to add this but DO NOT ingest soap! Detergents can be deadly and soap is a terrible irritant. The world is getting strange thanks to the internet with stupid and false information.)

Alcohol hand cleaner with 60% alcohol or more will do the same and is critical to keep handy after touching any questionable surface.

This virus is as deadly as any ever seen in far too many cases (luckily, that number is small compared to Ebola amd MERS and the like. But the current 5% death rate is frightfully high. The trend appears to be going down as they learn better treatments. Here's to hoping it continues to fall but don't be fooled - massive medical intervention is no solution.)

That it can be harmless (maybe) to many others (no apparent symptoms or very minor) makes this virus far more deadly than any that has ever been known to infect humans to date with such lethality. Getting it and not knowing one is ill is a great way to spread this illness far and wide. That is occuring and causing our rates to soar (here masks would make a world of a difference - When out around strangers wear a mask!) That lag period by the virus is also a big issue - up to 14 days.

I say 'maybe' earlier because some people that have shown no symtoms have been found to habor serious damage in their lung(s) and not realize this issue. Maybe only a few, maybe many or even possibly, most - so far, scientificly proven details on this subject are too few to know. As such, take this virus serious even if you are young and going stir crazy. The end effects might haunt you for life or even end it.

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Dennis P Brown
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Re: Coronavirus pandemic - Graph of Risk/activity

Post by Dennis P Brown » Sat Jul 04, 2020 11:13 pm

UMaybe a useful and simplistic graph showing a rough risk for a given activity. Based 1 to 9. Not sure it is scientifically based (highly unlikely) but does give a very rough idea based on someone doing a resonable study (I hope.)For instance, pumping gas would be low risk if one uses alcohol cleaner after using said pump. I assume that is convoluted in this graph. And using a mask (like when food shopping.) They really should have clarifed these points.
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Dan Knapp
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Re: Coronavirus pandemic

Post by Dan Knapp » Mon Jul 13, 2020 5:45 pm

Given that my area (Charleston, SC) has been jockeying over the last week or so with Bahrain for the position of third most rapidly growing infection level in the world, there does not appear to be an end in site any time soon here. Our governor, apparently drawing upon experience from our college years in the sixties when we kept girls from getting pregnant with an 11 pm dorm curfew, has ordered that bars stop selling drinks at 11 pm. But even the slowest among the millennial patrons has now realized that he can order a pitcher or two at 10:55. Fortunately, the governor does at least recommend wearing a mask, although he doesn’t think the constitution allows him to mandate it. It will be very interesting to read how the historians treat the leaders of this period, if we live to do so.
But more to the point here, I’ve had lots of time in isolation to pursue various things and would like to share something that may be of interest to others. For our Penning trap work, we’ve made various non-magnetic parts by conventional machining of titanium, but I’ve been interested for some time in the possibility of doing it by 3D printing. A friend in the dental school recently acquired a titanium 3d printer that does laser sintering of powder, but I don’t have several hundred thousand dollars to spend. There have been a few reports of metal 3D printing using a wire feed MIG welder, but the results are pretty crude. It occurred to me that it might better be done with a micro pulsed TIG welder. While cobbling together parts to build a motion system to try this, I stumbled upon a video about the the world’s “cheapest CNC milling machine” www.youtube.com/watch?v=bUkX3iwr2iE. This machine won’t actually do much milling, but for about $150 it’s hard to beat for the motion system alone. There are a large number of sellers of these CNC1610 machines on eBay, Alibaba, Banggood, etc., and there are larger versions as well (e.g. CNC3018). For $167, I found a dealer with stock in the US and a 1 week shipping time that also included a 500 mW laser for laser etching. One can buy a replacement 24 volt MIG wire feed mechanism for about $25, and I found a replacement wheel for feeding finer wire (0.6 mm) than the standard welder wire. With these, I’m assembling a machine to try the pulsed TIG approach to 3D metal printing. If I have any luck doing this, I’ll start a thread on it. I post now to call others attention to the fact that for quite a small investment, one can buy something to play with CNC machining to learn G coding if nothing else. You could also use it to make neat signs, PC boards, and front panels for fusor components.
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Dennis P Brown
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Re: Coronavirus pandemic

Post by Dennis P Brown » Mon Jul 13, 2020 6:21 pm

Impressive and if you succeed, that would be a great thread.

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Dennis P Brown
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Re: Coronavirus pandemic

Post by Dennis P Brown » Wed Jul 15, 2020 10:15 am

Terrible intial news on the disaster of COVID; this is a small number study (65 people) so I hope it isn't accurate. But this paper (and some anecdotal evidence from the field) indicates that most people do not maintain immunity long enough so that herd immunity will be viable. Worse, it might also mean that a vaccine will be ineffective or only partly effective.

Again, this isn't proven and might simply be a fluke. Also, and more critically, vaccine methods (unlike getting sick - many viruses in the covid family do cause repeat infections to their host) may very well create a massive response to COVID by the body and protection could last long enough to create herd immunity (assuming ignorence does not prevent wide enough use of any vaccine that might be developed.)

Here is the paper: https://www.medrxiv.org/content/10.1101 ... 20148429v1

Dan Knapp
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Re: Coronavirus pandemic

Post by Dan Knapp » Wed Jul 15, 2020 1:04 pm

This paper on the surface is indeed disturbing, but reading some of the discussion on the medrxiv posting gives some hope that it may not be as bad news as it sounds. Immunology is not one of my strong points, but it sounds like there could still be hope for acquired or vaccine derived immunity.

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