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Viga qhia koj paub txog facemask

Cov kab ke loj ntawm kev sib kis ntawm covid-19 yog cov tee pa thiab kev sib cuag kis. Aerosol thiab kev sib kis ntawm kev sib kis ntawm qhov ncauj yuav tsum tau piav qhia ntxiv. Cov kev tshawb nrhiav Epidemibiological tau qhia tias cov neeg muaj peev xwm yuav raug txiav kom ze nrog cov ntaub ntawv paub tseeb.
Yuav ua li cas nrog hom COV ntawm COVID-19 tus mob yuav tsum tau them nyiaj rau cov ntsiab lus hauv qab no. Thawj taw tes yog kom siab ua kom lub zog ntawm koj tus kheej tiv thaiv, Sim tsis txhob nyob lig, Zam kev haus dej ntau dhau, thiab qaug zog, yog li ua kom muaj zog ntawm koj tus kheej tiv thaiv koj tus kheej. Thib ob, Sim kom tsis txhob sib cuag nrog ib puag ncig uas yuav kis tau los ntawm tus kab mob, thiab zam qhov chaw uas tib neeg sib sau. Qhov thib peb taw tes yog tiv thaiv koj tus kheej. Thaum tawm mus rau ib qho chaw nrog ntau tus neeg, try to wear a mask, as this can effectively prevent the virus from spreading. Thib plaub, it is recommended to ventilate in time when at home. Tsib, hand hygiene should be maintained. Usually contact transmission is often transmitted through hands. Wash hands frequently according to the standard seven-step hand washing method.

When did people start using face mask?
This first goes back to the two pioneers who first discovered bacteria-Pasteur and Koch.
Thaum xub thawj, similar face mask, veils, lwm. did not appear for the purpose of blocking viruses. It wasn’t until the 19th century that Pasteur and Koch discovered through microbiological research that many pathogens came from bacteria, and face mask came into being. After the Spanish pandemic in 1918, people were forced to wear face mask, uas yog qhov pib ntawm kev sib kis ntawm lub ntsej muag npog ntsej muag. Txij thaum ntawd, tsis tsuas yog muaj kev tshawb fawb txog kev kho mob sai, Lub ntsej muag ntsej muag tau dhau los ua tus kho mob kho mob tsis tseem ceeb thiab tau siv dav siv.
Peb pib ua kom peb tus kheej nrog ntsej muag npog ntsej muag. Nws yog feem ntau thaum lub sijhawm SARS hauv 2003 Lub ntsej muag ntsej muag tau siv dav. Tom qab ob peb FLUS, xws li cov 2009 Ib tug khaub thuas Hini, Ntsej muag daim npog rov qab.

Vim li cas thiaj ua tau daim npog ntsej muag?
Lub ntsej muag npog ntsej muag ua haujlwm los thaiv cov kab mob ntawm tus kab mob los ntawm kev cais me me me me. Daim npog ntsej muag thaum ntxov tshaj plaws tau tsuas yog daim ntaub nyias nyias thaum lawv tshwm sim thawj zaug, Tab sis tam sim no tam sim no lub ntsej muag lub ntsej muag ntsej muag feem ntau siv polypropylene meltopler ntaub.
Meltblown daim ntaub yog tsuas yog cov txheej txheem xoob nrog lub pore loj ntawm 1-5 microns, uas tseem muaj huab cua zoo permeability, Yog li nws feem ntau siv los ua cov khoom siv raw rau lub ntsej muag ntsej muag.

Nyob rau hauv tus txheej txheem ntawm kev kis, Tus kab mob no tsis kis ib leeg, Tab sis nws yog feem ntau kis tau los ntawm huab cua thaum ua pa, sib tham, hnoos, thiab txham. Ntawm lawv, Cov khoom loj ntawm cov tee thaum hnoos thiab txham. Noj qeg yuav tsim 40,000 micron-me tee, uas ib txwm kuj tseem muaj ntau yam pathogens.
Ntxiv nrog rau txham, Muaj kev phom sij siab ntawm tus kab mob kis tau yooj yim los ntawm tus neeg mob. Qee qhov kev tshawb fawb tau tso tus mob khaub thuas ua npaws hauv ib puag ncig sab hauv ib puag ncig thiab sim tus kabmob hauv cov huab cua ib puag ncig. Qhov no kuj yog qhov kev nyab xeeb pom zoo rau cov neeg uas tsis hnav daim npog ntsej muag.
Xav tias koj nyob hauv tsev loj, tsheb ciav hlau hauv qab av, xyaum, lossis koj mob thaum koj mus tom tsev kho mob. Koj puas tuaj yeem khaws cia 1m deb ntawm cov neeg ib puag ncig koj?
Niosh muab cov qauv ntawm lub ntsej muag ntsej muag ua peb pawg, namely n series, R series thiab p series. N yog rau kev tiv thaiv ntawm cov tsis muaj cov roj uas tau ncua tseg tsis muaj sijhawm. R thiab P yog rau kev tiv thaiv ntawm cov tsis muaj cov roj uas raug tshem tawm thiab cov hws tawm hws, Tab sis r theem ntawm kev tiv thaiv ntawm cov roj muaj peev xwm tsuas yog muaj yim teev, thiab P theem tsis muaj kev txwv. Cov peb pawg no muaj peb hom kev ua raws kev ua raws li 95 (95%), 99 (99%), thiab 100 (99.97%), Yog li tag nrho ntawm cuaj yam npog ntsej muag. Txij li thaum muaj roj ntsha hais feem ntau tsis muaj roj, N Cov qib yuav siv tau. N95 qib txhais tau tias kev lim dej ua haujlwm ntawm cov khoom tsis muaj roj uas tsis muaj kev tiv thaiv 95%, thiab N95 yog qib theem pib ntawm txhua qib.

N95 yog ib ntawm cuaj hmoov av ntsej muag npog daim ntawv pov thawj los ntawm Niosh (Miskas lub koom haum ntawm Kev Ua Haujlwm Kev Nyab Xeeb thiab kev noj qab haus huv). N sawv cev rau tias nws cov khoom tsuas yog tsim nyog rau kev lim tsis muaj plua plav tsis muaj plua plav, thiab 95 sawv cev hais tias nws lub lim dej ua haujlwm yog tsawg kawg 95%.
Lwm lub teb chaws N95 Qib lim cov qauv lim
1.EU EN149 tus qauv
FFP1: Lim nyhuv> 80%
FFP2: lim nyhuv> 94%
FFP2: lim nyhuv> 97%
2.Australian As1716 Txuj Ci
P1: Lim nyhuv> 80%
P2: Lim nyhuv> 94%
P2: Lim nyhuv> 99%
3.Nyiv Mol Txuj Ci
Ds1: lim nyhuv> 80%
Ds2: lim nyhuv> 99%
Ds3: lim nyhuv> 99.9%

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