Tus nqi luv nqi Bundor Din F4 Flanged 4 Nti Rooj vag Valve Chaw Tsim Khoom Nrog s Cov Hlau Hlau Sluice Valve Nrog Resilient Rooj

Cov yeeb yaj kiab hauv qab no qhia tau hais tias lub cuab yeej tsim los ntawm Matt Staymates, uas nws siv los qhia tias lub qhov ncauj qhov ntswg tuaj yeem tiv thaiv kev sib kis ntawm COVID-19. Xov Xwm Tshaj Tawm-Washington, Kaum Ib Hlis 10, 2020-Yog tias koj pom ib tus neeg taug kev hauv lub khw muag khoom noj lossis lwm qhov chaw, hnav lub npog ntsej muag nrog lub valve, thiab xav paub tias nws muaj kev nyab xeeb npaum li cas rau koj, ces koj yuav tsum tau saib xyuas. Matthew Staymates, tus kws tsim kho tshuab thiab cov dej dynamicist ntawm National Institute of Standards and Technology, tab tom kawm ntau hom npog ntsej muag los txiav txim seb qhov twg tuaj yeem txo tau tus kab mob zoo tshaj plaws. Nyob rau hauv "Fluid Physics" los ntawm AIP Publishing, nws tau piav qhia txog kev tshawb nrhiav cov dej ntws yooj yim ntawm N95 lub qhov ncauj qhov ntswg nrog lossis tsis muaj qhov exhalation valve. Txog rau qhov kawg no, nws tau tsim cov yeeb yaj kiab zoo kawg nkaus los ntawm Schlieren imaging, ib txoj hauv kev pom cov dej ntws thiab lub teeb tawg tawm ntawm qhov chaw ntawm ib qho khoom. Lub exhalation valve ntawm N95 daim npog qhov ncauj yog tsim los txhim kho cov neeg siv kev nplij siab los ntawm kev txo cov lim dej thaum lub sij hawm exhalation. Staymates tau hais tias: "Thaum koj exhale, lub ntsej muag me me yog qhov pib qhib, kom huab cua tawm mus yam tsis muaj lim los ntawm cov khoom siv npog ntsej muag." "Kuv tuaj yeem pom lub hauv paus ntsiab lus ua haujlwm ntawm exhalation valve, thiab muab piv nrog tsis muaj lub valve. Lub N95 tau muab piv." Staymates tau hais tias nws txoj kev tshawb fawb qhia tau tias N95 lub qhov ncauj qhov ntswg nrog lub qhov ntswg exhalation tsis haum rau lim tawm cov pa ua pa los ntawm tib neeg. Nws tau hais tias: "Peb qhov kev nkag siab tam sim no yog ib feem ntawm COVID-19 kis los ntawm cov pa ua pa, yog li thaum muaj kev sib kis no, N95 nrog lub valve tsis haum rau kev tswj hwm qhov chaw." Nws pom tias N95 daim npog qhov ncauj tsis muaj lub valve tuaj yeem tiv thaiv cov kua dej feem ntau los ntawm kev nkag mus rau cov khoom siv lub ntsej muag. Staymates tau tsim ib lub chaw kuaj huab cua zoo tshaj plaws hauv nws lub rooj cob qhia woodworking los sim ntau hom ntsej muag thiab cov khoom siv. Nws tsim ib qho kev tawm dag zog kom ua raws li cov qauv exhalation ntawm cov neeg tiag tiag, thiab tsim ib lub pneumatic velocimeter los ntsuas nws tus kheej ua pa ntws nkhaus. Nws siv cov ntaub ntawv no los ua tus qauv rau kev ua pa tawm dag zog. Staymates tau hais tias: "Kuv kuj tau tsim thiab tsim lub tshuab hluav taws xob pos huab rau hauv lub taub hau mannequin. Lub tshuab hluav taws xob pos huab muab cov tee dej uas zoo ib yam li cov neeg tawg rog." Exhale, thiab lub tshuab hluav taws xob pos huab qhov tseem ceeb ua rau nws zoo li nws tsuas yog haus luam yeeb xwb." Nws hais tias kev siv schlieren imaging thiab lwm yam kev pom kev siv thev naus laus zis "yuav txuas ntxiv pab peb nkag siab zoo li cas lub ntsej muag thiab lub ntsej muag lub ntsej muag ua lub luag haujlwm hauv kev sib kis. ntawm tus kab mob no." "Kuv vam tias txoj haujlwm no yuav pab ua kom cov neeg tuaj saib paub Nyob rau hauv cov txheej txheem ntawm peb cov lus teb sib koom ua ke rau kev sib kis thoob ntiaj teb no, cov li qub nrog lub qhov ncauj qhov ntswg yuav tsis pab." Matthew Staymates tau sau "Flow visualization siv schlieren imaging thiab lub teeb tawg rau ntawm. N95 lub tshuab ua pa nrog thiab tsis muaj exhalation valve". 10.1063/5.0031996 Fluid Physics tau mob siab rau kev tshaj tawm ntawm thawj qhov kev xav, kev suav thiab kev sim pab rau cov roj, kua thiab cov kua dej tsis sib xws Saib https://aip.scitation.org/journal/phf Ua ntej qhov embargo tas sij hawm ntawm 11: 00 am Eastern Time thaum lub Kaum Ib Hlis 12, 2020, yuav tsum muaj PassPass rau cov neeg sau xov xwm kom nkag mus rau cov xov xwm no. NewswisePressPass tso cai rau cov neeg sau xov xwm txheeb xyuas nkag mus rau cov xov xwm txwv. Thov nkag rau hauv kom ua tiav daim ntawv thov presspass. Yog koj tseem tsis tau sau npe, thov sau npe. Thaum sau rau hauv daim ntawv sau npe, thov paub meej tias koj yog ib tus neeg sau xov xwm ua ntej nkag mus rau hauv daim ntawv thov daim ntawv thov. Ib txoj kev tshawb fawb los ntawm UCLA Field School of Public Health pom tias txawm tias daim npog ntsej muag yooj yim tuaj yeem txo qhov kis ntawm COVID-19 cov kua ua pa los ntawm 77%. Txog thaum lub sijhawm txwv tsis pub dhau lub Kaum Ib Hlis 12, 2020 Eastern Standard Time, tus neeg sau xov xwm PassPass yuav tsum nkag mus rau cov xov xwm no. Thov nkag rau hauv kom ua tiav daim ntawv thov presspass. Yog koj tseem tsis tau sau npe, thov sau npe. Thaum sau rau hauv daim ntawv sau npe, thov paub meej tias koj yog ib tus neeg sau xov xwm ua ntej nkag mus rau hauv daim ntawv thov daim ntawv thov. Cov txiaj ntsig tau qhia tias yuav tsum muaj kev soj ntsuam dav dav kom txo qis kev sib kis ntawm COVID-19 hauv pab pawg teeb tsa Tom qab ob lub hlis hauv ib qho ntawm 38 lub tsev kho mob hauv Michigan, cov txiaj ntsig ntawm COVID-19 cov neeg mob suav nrog kev tuag siab, rov mus pw hauv tsev kho mob, lub cev thiab lub hlwb tsis tu ncua. teeb meem kev noj qab haus huv, teeb meem kev ua haujlwm niaj hnub, thiab teeb meem kev ua haujlwm thiab nyiaj txiag. Ib nrab ntawm cov tshuaj tiv thaiv yog nkim txhua xyoo vim lawv tsis tau txias. Michigan Institute of Technology thiab UMass Amherst chemical engineers tau tshawb pom ib txoj hauv kev los txhim kho tus kab mob hauv cov tshuaj tiv thaiv nrog cov protein es tsis txhob kub. Cov neeg uas tau zoo los ntawm tus mob coronavirus tuaj yeem tsim cov tshuaj tiv thaiv zoo tiv thaiv SARS-CoV-2, uas yuav hloov zuj zus nyob rau ob peb hlis tom qab kis kab mob. Cov tshuaj tiv thaiv kab mob no tuaj yeem hloov kho hauv cov lus teb rau cov kab mob uas nyob hauv cov kab mob antigens zais hauv plab. Cov kws tshawb fawb ntawm Karolinska Lub Tsev Haujlwm hauv Sweden tau tshawb nrhiav txhua qhov kev tshawb fawb txog COVID-19 uas tau tshaj tawm thaum pib muaj kev sib kis. Ib txoj kev tshawb fawb tshiab los ntawm Notre Dame tau tshuaj xyuas tus cwj pwm nquag thawj zaug hauv kev teb rau kev kub ntxhov (piv txwv li, hauv tsev kho mob hauv Wuhan, Tuam Tshoj, ntawm qhov tseem ceeb ntawm tus kabmob coronavirus, nyob rau theem pib ntawm COVID-19 kis thoob qhov txhia chaw). Newswise muab cov neeg sau xov xwm nkag mus rau cov xov xwm tshiab thiab muab lub platform rau cov tsev kawm qib siab, tsev kawm ntawv thiab cov neeg sau xov xwm los tshaj tawm xov xwm loj rau lawv cov neeg tuaj saib.