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N_Cook <diverse@tcp.co.uk>: Mar 17 04:46PM On 17/03/2020 11:57, N_Cook wrote: > likely to have a store of non-working ventilators,for parts-doning, that > a group of volunteer retired electronic repairers could volunteer to try > to get going again?   from someone in the medical world   The local hospital has a very large medical electronics department who keep all the kit running with specialist engineers in various modalities. In the anaesthetics department they have a museum/store of old kit which includes anaesthetic and ICU variants of ventilator. I would suspect that equipment is being serviced as we speak. In the past, excesses of redundant equipment like this would go to 'the Third World' and vets.   So an Emergency Powers Act government requisition of all large-animal ventillators from vets would make more sense than building new from a currently next to zero manufacturing base, a concept put out to the UK media.   -- Monthly public talks on science topics, Hampshire , England <http://diverse.4mg.com/scicaf.htm>

Michael Terrell <terrell.michael.a@gmail.com>: Mar 17 12:33PM -0700 On Tuesday, March 17, 2020 at 12:46:46 PM UTC-4, N_Cook wrote: > ventillators from vets would make more sense than building new from a > currently next to zero manufacturing base, a concept put out to the UK > media.     I doubt that obsolete equipment will be allowed to be put back into service. Once the OEM stops supporting it, They cant be insured. Unless the UK system is extremely shoddy, they will not allow it to be used anywhere other than on a movie or TV sound stage. I have personally scraped thousands of pieces of medical electronics that all had a 1/4" hole drilled through the case and the man PC board. It is a process called 'Certified Destruction'.

"pfjw@aol.com" <peterwieck33@gmail.com>: Mar 17 12:48PM -0700 On Tuesday, March 17, 2020 at 12:46:46 PM UTC-4, N_Cook wrote: > > likely to have a store of non-working ventilators,for parts-doning, that > > a group of volunteer retired electronic repairers could volunteer to try > > to get going again?   Two doors down from my office was a Medical Maintenance shop that served two major acute care hospitals, Hahnemann University Hospital, in which basement it was, and St. Christopher's Hospital for Children that sent all its equipment over for servicing. Hahnemann is now closed, and the shop moved over to St. Chris. As Michael suggests, obsolete stuff was obsolete stuff. It would either be sold to 3rd-world nations for a nominal sum (typically, $1.00 per container load) or sent to a crushing yard with a paper-trail. Either method got it 'off the books' for insurance purposes.   I am in an interesting position. Drexel still has a medical school (on hiatus) that is my client, but the hospital is largely a ghost town - and COVID19 is not changing that. I am on orders from my company and owner to work from home when at all possible - not always the case. But, I have access to hand-sanitzer in bulk, toilet paper in bulk, and whatever sorts of other apparatus I might want. But, common sense, clean hands and no hugging strangers about covers it.   Peter Wieck Melrose Park, PA

John-Del <ohger1s@gmail.com>: Mar 17 12:57PM -0700 On Tuesday, March 17, 2020 at 3:48:29 PM UTC-4, pf...@aol.com wrote: and no hugging strangers about covers it.   That pretty much puts the kibosh on lap dances...

"pfjw@aol.com" <peterwieck33@gmail.com>: Mar 17 01:40PM -0700 On Tuesday, March 17, 2020 at 3:58:02 PM UTC-4, John-Del wrote:   > That pretty much puts the kibosh on lap dances...   Those who engage in that sort of activity - well, my guess is that they really just don't care...   Peter Wieck Melrose Park, PA

etpm@whidbey.com: Mar 17 03:16PM -0700 On Tue, 17 Mar 2020 13:40:39 -0700 (PDT), "pfjw@aol.com"   >Those who engage in that sort of activity - well, my guess is that they really just don't care...   >Peter Wieck >Melrose Park, PA I certainly care. That's why I started wearing rubber suits when I do lap dances. Eric

Michael Terrell <terrell.michael.a@gmail.com>: Mar 17 04:31PM -0700 > I certainly care. That's why I started wearing rubber suits when I do > lap dances.     Doesn't that kill your tips? ;-)

Jeff Layman <jmlayman@invalid.invalid>: Mar 18 02:06PM > d) Which will allow for better care for those who are ill. > e) But, again, not stop the spread.   > As to hand sanitizer - alcohol concentration, whatever the fraction, must be at/over 60%. And it does not take much.   I think you'll find it's >70% rather than 60%.   > As to masks, they help ONLY those who are already infected from spreading the disease from coughing, that is airborne droplets. Consider the size of a virus (smaller than a micron) and then consider exactly how a mask will screen it out of the air you are breathing. Similarly, goggles.   So all the health professionals helping to treat Covid-19 are complaining about a shortage of masks because they don't want to infect patients? I don't think I've heard so much nonsense from "experts" on TV about use of masks. So this page is a waste of time? <https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public/when-and-how-to-use-masks>. I just expand its use to other situations - if you are out in the street and pass someone coughing, would not think you might have been better off wearing a mask? Anyway, the sort of mask shown in that webpage looks to me like a P1, and a P3 (possibly N95 in the USA?) will be much more effective.   You get idiotic information such as here: <https://www.livescience.com/face-mask-new-coronavirus.html>. Quote "A more specialized mask, known as an N95 respirator, can protect against the new coronavirus, also called SARS-CoV-2. The respirator is thicker than a surgical mask, but neither Schaffner nor the Centers for Disease Prevention and Control (CDC) recommend it for public use, at least not at this point." Why not? "That's because, in part, it's challenging to put on these masks and wear them for long periods of time, he said." Junk, as later it's stated "Could they be of some use? Yes, but the effect is likely to be modest," Schaffner said." If they can be of *some* use, they should be used in the current situation. Anything that helps to cut down transmission is better than nothing.   Of course a mask won't stop a particle the size of a virus, but who said most particles coughed out are virus sized? In influenza, most particles coughed out were in the 0.35 - 10 micron size (<https://www.ncbi.nlm.nih.gov/pubmed/22651099>). Most of these would be caught by a decent mask.   And why do you think goggles won't help? Even ordinary glasses will help a little by stopping particles going directly onto the eye. Close-fitting goggles would be a lot better.   > Isolation suits are a different deal altogether, self-contained, and sealed. Short of that, never mind.   If you don;t want to use any PPE, fine, but don't recommend it to others.   > So, social isolation, common sense, clean hands, limit unnecessary travel, eat well.   No argument there, except I would use "stop" instead of "limit". If it's unnecessary, why do it at all?   --   Jeff

Tim R <timothy42b@aol.com>: Mar 18 05:23AM -0700 On Thursday, March 12, 2020 at 7:12:06 AM UTC-4, John-Del wrote:   > > >OK - I gotta ask: Why?   > > So I won't get locked out of the house again.   > Far easier to hide a physical key.   Nah.   Get a wind chime, one of those oriental looking ones with weird shaped pieces of metal.   Add a lock pick and tension wrench to it. Hang it near your door.   Practice a bit with it - you only have one lock to get used to and you'll quickly learn how to pick that one.   This is zero risk. Real thieves kick your door in. That one in a million who actually knows how to pick a lock already has lock picks. Neighborhood kids won't know what your picks are or how to use them if they did see them.

legg <legg@nospam.magma.ca>: Mar 17 07:22PM -0400 On Mon, 16 Mar 2020 16:53:24 -0700 (PDT), Michael Terrell >> approvals.   > Or at least make sure they are properly fused. I bought one of those heat sealers for plastic bags last year. It didn't work, so I opened it up Both wires to the spring loaded power switch had cold solder joints and one had cracked off in shipping. I always look into the design of imported equipment to look for safety hazards. Just because a case has some safety stick on it doesn't mean that it was properly built in a foreign factory.   >We had a new employee miswire the IEC power connector on a chassis. She had the AC line connected to the chassis, and the ground wire connected wrong as well. The tech who knew better plugged it in without looking at the wiring. When it didn't turn on, He leaned over to look into the chassis as he touched the chassis and a grounded piece of test equipment. H got a really nasty shock that he could have avoided. If it hadn't knocked him on his ass, it could have killed him.   I notice that newer versions of the 601D are provided with a 3-wire line cord.   That might be a good start, if they could only remember to stick the fuse in the color-coded live wire, not the neutral.   It could be a good product as, when reconfigured, it still does the job. As is, it's just dangerous.   RL

Michael Terrell <terrell.michael.a@gmail.com>: Mar 17 04:33PM -0700 On Tuesday, March 17, 2020 at 7:17:12 PM UTC-4, legg wrote: > stick the fuse in the color-coded live wire, not the neutral.   > It could be a good product as, when reconfigured, it still does > the job. As is, it's just dangerous.     Then fix it!

legg <legg@nospam.magma.ca>: Mar 18 07:36AM -0400 On Tue, 17 Mar 2020 16:33:02 -0700 (PDT), Michael Terrell   >> It could be a good product as, when reconfigured, it still does >> the job. As is, it's just dangerous.   > Then fix it!   See OP.   RL

Silver Dream ! <email@domain.com>: Mar 17 06:15PM +0100 On 2020-03-17 16:01:38 +0000, Chuck said:   >> system.   > When I came to the UK from the states, the 50hz flickering annoyed me. > Did natives notice the flicker?   Normally no, we didn't notice that. Or noticed but didn't complain about it because we didn't know that it could behave differently.   -- SD!

Michael Terrell <terrell.michael.a@gmail.com>: Mar 17 12:37PM -0700 On Monday, March 16, 2020 at 11:00:36 PM UTC-4, Fred Smith wrote:   > NTSC: Never Twice Same Color   > SECAM: System Essentially Contrary to Americans   > PAL: Perfect AT Last.     NTSC predates Color TV. It stands for 'National Television Standards Committee'. It is from the very early days of electronically scanned TV in the United States.

Phil Allison <pallison49@gmail.com>: Mar 17 12:44PM -0700 tabb...@gmail.com wrote:   -----   > 'Never The Same Colour twice' was what I always heard.   ** Never Twice the Same Colour" is the acronym.     SECAM = "Something Essentially Contrary to the American Method"   MCAS = "Money Counts Above Safety"       ..... Phil

Adam <adamg@pobox.comNOSPAM>: Mar 18 12:45AM > will tell me how _does_ the generator encode the signal. What I am > looking for though is the official/norm/standard specification telling > how it _should_ encode it.   Here you go:   https://www.govinfo.gov/content/pkg/CFR-2014-title47-vol4/pdf/CFR-2014-title47-vol4-sec73-682.pdf https://www.govinfo.gov/content/pkg/CFR-2019-title47-vol4/pdf/CFR-2019-title47-vol4-sec73-699.pdf   But beware... My understanding is that the phosphors actually used in TV sets don't conform to the standard.   -- Adam

Michael Terrell <terrell.michael.a@gmail.com>: Mar 17 07:35PM -0700 On Tuesday, March 17, 2020 at 8:45:15 PM UTC-4, Adam wrote: > https://www.govinfo.gov/content/pkg/CFR-2019-title47-vol4/pdf/CFR-2019-title47-vol4-sec73-699.pdf   > But beware... My understanding is that the phosphors actually used in TV > sets don't conform to the standard.     There are none that are an exact natch, but they have come a long way in the past 50+ years. The first could not render an accurate flesh tone, and the image was cartoonish. The first 'Rare Earth' phosphors helped a lot, and they have been tweaked over the following years.

Ian Jackson <ianREMOVETHISjackson@g3ohx.co.uk>: Mar 18 10:27AM In message <5fa87dad-beed-49db-9008-4c6af41ffb1f@googlegroups.com>, Michael Terrell <terrell.michael.a@gmail.com> writes   > NTSC predates Color TV. It stands for 'National Television Standards >Committee'. It is from the very early days of electronically scanned TV >in the United States.   Indeed. PAL and SECAM are acronyms for the description of how the systems work, and not for the organisation that devised the system. -- Ian

ari.yobi@gmail.com: Mar 17 11:27PM -0700

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