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PPP vs. Coronavirus - tema za praktične savete i korisne informacije


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Inače, kako ovde virolozi kažu(a sad imaju iskustva):

Virus se zadržava na predmetima(naročito metalnim-kvake i sl.) i više dana.

Toplota i toplo vreme ne uništavaju virus.

Maske imaju smisla samo ako su FFP2 ili 3, obične maske nemaju smisla.

Prati ruke što češće sapunom(30 sekundi), ili koristiti gelove na bazi alkohola. Kvake i ostalo dezinfikovati tečnostima na bazi hipohlorita natrijuma 0,9%.

Ne dodirivati rukama nos, oči i lice.

Držati rastojanje najmanje 1m od drugih ljudi.

 

Mala inside informacija: zalihe napravite samo antipiretika i lekova protiv bolova onih nesteroidnih(recimo ibuprofen), jer će u narednim mesecima verovatno početi nestašica toga obzirom da se sirovine(što je prljava tehnologija), uglavnom prave u Aziji, a tamo već smanjuju isporuke jer njima treba u uvećanim količinama.

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6 minutes ago, Tresko said:

Kvake i ostalo dezinfikovati tečnostima na bazi hipohlorita natrijuma 0,9%.

 

 

Koje su to tecnosti na nasem trzistu?

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3 minutes ago, Paul Gompitz said:

 

Koje su to tecnosti na nasem trzistu?

Ne znam šta se od toga prodaje u Srbiji. Ovde je najpoznatija Amuchina, ali to već odavno ne može više da se nadje po radnjama, ne mogu da proizvedu koliko se kupuje.

Mislim da u SRbiji ima onaj hlorheksidin ili tako nešto.

U slučaju da nema drugog, možeš i varikinu da koristiš, to je hipohlorit natrijuma, ono što u US zovu bleach.

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31 minutes ago, Tresko said:

U slučaju da nema drugog, možeš i varikinu da koristiš, to je hipohlorit natrijuma,

 

+1,

evo ga pod brojem 8 na spisku  (uzgred, asepsol je benzalkonijum hlorid, na spisku je pod brojem 2)

 

varikina je rastvor natrijum hipohlorita (user @Kelt je spominjao natrijum hipohlorit kao sredstvo za dezinfekciju).

mislim da je varikina sasvim OK, samo je treba razrediti na preporucenu koncentraciju

 

 

Screenshot_20200309-002329_1.png.b8e4c36e2d1074b95e561eac84d1f0a5.png

 

 

Edit: varikina se prodaje pod raznim komercijalnim nazivima, može biti skupa u fensi pakovanju... ja sam kupio "snežnik" košta oko 80 dinara za litar. Ostaje da preračunam koliko da pomešam sa vodom da bih dobio 0.05% koncentraciju za pranje ruku

 

Edited by Frile
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Ah, da. Neizbežno će se pojaviti debilana sa širenjem "činjenica" da domaće životinje prenose covid19. Naravno, to nije tačno, životinje nemaju veze sa tim.

Nažalost ovde je bilo morona koji su izbacivali životinje iz kuća.:sad:

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moderacija zna da se ruke peru sapunom a ne VARIKINOM

Quote

/gardijan/ The science of soap – here’s how it kills the coronavirus | Palli Thordarson

Palli Thordarson


Skip to main content
Alcohol-based disinfectants are also effective, but soap is a highly efficient way of killing the virus when it’s on your skin
 

Man and young child washing hands with soap   ‘Soap dissolves the fat membrane of the virus – and the virus falls apart like a house of cards and dies.’ Photograph: Flashpop/Getty Images

Viruses can be active outside the body for hours, even days. Disinfectants, liquids, wipes, gels and creams containing alcohol are all useful at getting rid of them – but they are not quite as good as normal soap.

When I shared the information above using Twitter, it went viral. I think I have worked out why. Health authorities have been giving us two messages: once you have the virus there are no drugs that can kill it or help you get rid of it. But also, wash your hands to stop the virus spreading. This seems odd. You can’t, even for a million dollars, get a drug for the coronavirus – but your grandmother’s bar of soap kills the virus.

So why does soap work so well on the Sars-CoV-2, the coronavirus and indeed most viruses? The short story: because the virus is a self-assembled nanoparticle in which the weakest link is the lipid (fatty) bilayer. Soap dissolves the fat membrane and the virus falls apart like a house of cards and dies – or rather, we should say it becomes inactive as viruses aren’t really alive.

The slightly longer story is that most viruses consist of three key building blocks: ribonucleic acid (RNA), proteins and lipids. A virus-infected cell makes lots of these building blocks, which then spontaneously self-assemble to form the virus. Critically, there are no strong covalent bonds holding these units together, which means you do not necessarily need harsh chemicals to split those units apart. When an infected cell dies, all these new viruses escape and go on to infect other cells. Some end up also in the airways of lungs.

When you cough, or especially when you sneeze, tiny droplets from the airways can fly up to 10 metres. The larger ones are thought to be the main coronavirus carriers and they can go at least two metres.

These tiny droplets end on surfaces and often dry out quickly. But the viruses remain active. Human skin is an ideal surface for a virus. It is “organic” and the proteins and fatty acids in the dead cells on the surface interact with the virus.

When you touch, say, a steel surface with a virus particle on it, it will stick to your skin and hence get transferred on to your hands. If you then touch your face, especially your eyes, nostrils or mouth, you can get infected. And it turns out that most people touch their face once every two to five minutes.

Washing the virus off with water alone might work. But water is not good at competing with the strong, glue-like interactions between the skin and the virus. Water isn’t enough.

Soapy water is totally different. Soap contains fat-like substances known as amphiphiles, some of which are structurally very similar to the lipids in the virus membrane. The soap molecules “compete” with the lipids in the virus membrane. This is more or less how soap also removes normal dirt from the skin.

The soap not only loosens the “glue” between the virus and the skin but also the Velcro-like interactions that hold the proteins, lipids and RNA in the virus together.

Alcohol-based products, which pretty much includes all “disinfectant” products, contain a high-percentage alcohol solution (typically 60-80% ethanol) and kill viruses in a similar fashion. But soap is better because you only need a fairly small amount of soapy water, which, with rubbing, covers your entire hand easily. Whereas you need to literally soak the virus in ethanol for a brief moment, and wipes or rubbing a gel on the hands does not guarantee that you soak every corner of the skin on your hands effectively enough.

So, soap is the best, but do please use alcohol-based sanitiser when soap is not handy or practical.

 Palli Thordarson is a professor of chemistry at the University of New South Wales, Sydney

 

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Quote

Do-it-yourself sanitizers must contain at least 60% alcohol, by volume, to work, Dr. Agus said. Isopropyl alcohol (better known as rubbing alcohol) or ethanol are both suitable varieties, experts told CBS MoneyWatch.

"If you make it well, it's about as effective as using soap and water," said Dr. Stephen Morse, a professor of epidemiology at Columbia University in New York. "We know it works — just make sure it has enough alcohol in it."

https://www.cbsnews.com/news/hand-sanitizer-coronavirus-make-your-own/

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mislim da je vreme da se vratimo na pravi put

koga zanima, neka pročita do kraja i pogleda attach
ako je u nekom trenutku potrebno nešto pouzdanije od vode i sapuna,  a nema pri ruci (rasprodato) alkoholnih gelova, 70% akohola, asepsola...

 

 

Edited by Frile
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postoji i studija o ovome https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0172734

 

izvrsen je eksperiment sa pranjem ruku samo vodom i razlicitim sredstvima:

 

pojmovi: 

 

Phi6

bezopasan virus koriscen u eksperimentu koji se u ove svrhe moze izjednaciti sa koronavirusom 

 

Soil load

smesa napravljena nalik na ljudske telesne izlucevine, da se simulira prenosenje virusa u realnim uslovima, kapljicnim putem

 

Ctrl B

pranje ruku samo vodom

 

HWWS

pranje ruku sa sapunicom

 

st NaOCL

pranje ruku natrijum hipohloritom (tzv varikina) 0.05%

 

"Within the seven handwashing protocols there were no significant differences without soil load (F(6,66) = 2.04, p = 0.073). For handwashing with soil load, there were significant differences found (F(6,102) = 7.01, p<0.001). Handwashing with water alone resulted in greater log reduction than ABHS and stabilized NaOCl (p = 0.025 and 0.016, respectively), and handwashing with soap resulted in greater log reduction than ABHS,

. . .

HWWS performed well for Phi6 with soil load, outperforming three other conditions. However, these handwashing efficacy differences were small in magnitude. "

journal.pone.0172734.g004

 

 

znaci sve mu isti andrak krecemo se u rasponu od 97.5-99%. pritom je vazniji ovaj drugi dijagram.

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7 hours ago, Tresko said:

Ah, da. Neizbežno će se pojaviti debilana sa širenjem "činjenica" da domaće životinje prenose covid19. Naravno, to nije tačno, životinje nemaju veze sa tim.

Nažalost ovde je bilo morona koji su izbacivali životinje iz kuća.:sad:

 

U stvarnosti je obrnuto, u Japanu valjda je gazda zarazio svog kera, a da je životinja zarazila čoveka nije zabeleženo.

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1 hour ago, Joe D said:

Ne moze ker da se zarazi. Mnogo bi bilo da tako lako skace virus a vrste na vrstu. Ali moze da raznosi virus.

Ni za to nema dokaza.

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