Intengo Yesaphulelo I-Bundor Din F4 Flanged 4 Inch Gate Valve Ukukhiqiza Nge-s Ductile Iron Sluice Valve Nesihlalo Esiqinile

Le vidiyo engemuva kwesigcawu ikhombisa idivayisi emiswe nguMat Staymates, ayisebenzisela ukukhombisa ukuthi imaski ingamisa kanjani ukusabalala kwe-COVID-19. Umbiko Wezindaba-Washington, Novemba 10, 2020-Uma ubona othile ezulazula esitolo segrosa noma kwenye indawo, egqoke imaskhi ene-valve, futhi ufuna ukwazi ukuthi kuphephe kangakanani kuwe, kufanele ukunakwa. UMatthew Staymates, ongunjiniyela wemishini kanye ne-fluid dynamicist e-National Institute of Standards and Technology, ucwaninga izinhlobo ezahlukene zamaski ukuze anqume ukuthi iyiphi enganciphisa kangcono ukusakazeka kwezifo. Ku-"Fluid Physics" ka-AIP Publishing, uchaze ukuhlola amandla okugeleza ayisisekelo kumaski we-N95 anevalvu yokukhipha umoya noma ngaphandle kwayo. Kuze kube manje, ukhiqize amavidiyo amangalisayo avela ku-Schlieren imaging, indlela yokubona ukugeleza koketshezi kanye nokukhanya okuhlakazeka kude nobuso bento. Ivalvu yokukhipha umoya kumaski we-N95 yakhelwe ukuthuthukisa ukunethezeka komsebenzisi ngokunciphisa ukumelana nokuhlunga ngesikhathi sokukhipha umoya. U-Staymates uthe: "Lapho ukhipha umoya, i-flap encane ivuleka ngokuyisisekelo, ukuze umoya ukhishwe ngaphandle kokuhlunga nge-mask material." "Ngingakwazi ukukhombisa umgomo wokusebenza kwevalve ekhipha umoya, bese ngiyiqhathanisa ne-valve enjalo. I-N95 yaqhathaniswa." AbakwaStaymates bathi ucwaningo lwakhe lukhombisa ukuthi imaski ye-N95 enama-valve okukhipha umoya ayifanele ukuhlunga amaconsi okuphefumula kubantu. Uthe: "Ukuqonda kwethu njengamanje ukuthi ingxenye ye-COVID-19 isakazwa amaconsi okuphefumula, ngakho-ke phakathi nalolu bhubhane, i-N95 ene-valve ayihambisani nokulawula umthombo." Uthole ukuthi imaskhi ye-N95 ngaphandle kwe-valve ingavimbela ngempumelelo amaconsi amaningi oketshezi ukuthi angangeni kumaski. I-Staymates isungule ilabhorethri enhle yesimo sezulu sonke endaweni yakhe yokusebenzela yokwenza izinkuni ukuze ihlole izinhlobo ezahlukene zamaski nezinto zokwakha. Wakha isistimu yokwenziwa yokukhipha umoya ukuze alingise iphethini yokukhipha umoya yabantu bangempela, futhi wadala i-velocimeter yomoya eyenziwe ngokwezifiso ukuze ikale ijika lakhe lokugeleza kokuphefumula. Usebenzise le datha njengendinganiso yesistimu yokukhipha umoya yokwenziwa. U-Staymates uthe: "Ngaphinde ngaklama futhi ngakha ijeneretha yenkungu yangokwezifiso ngaphakathi kwekhanda le-mannequin. Ijeneretha yenkungu inikeza amaconsi afana kakhulu nalawo ahlakazwe abantu." Exhale, kanye nejeneretha yenkungu empeleni ikwenza kubukeke sengathi ibhema ugwayi nje." Uthe ukusetshenziswa kwe-schlieren imaging nobunye ubuchwepheshe bokubona ukugeleza "kuzoqhubeka nokusisiza ukuthi siqonde kangcono ukuthi imaski namamaski wobuso kunendima engakanani ekusabalaleni. lesi sifo." "Ngiyethemba ukuthi lo msebenzi uzosiza ukwazisa izethameli Enqubweni yokusabela kwethu ngokuhlanganyela kulolu bhubhane lomhlaba wonke, ama-valve anamaski ngeke asize." UMatthew Staymates ubhale ukuthi "Ukubona ngeso lengqondo kusetshenziswa izithombe ze-schlieren nokusabalalisa ukukhanya Ama-N95 respirators anevalvu yokukhipha umoya nangenayo". Izovela kokuthi "Physics of Fluids" ngoNovemba 10, 2020 (DOI: 10.1063/ 5.0031996). Ngemva kwalolo suku, ungavakashela ku-https://aip.scitation.org/doi/ 10.1063/5.0031996 I-Fluid Physics inikezelwe ekushicilelweni kwethiyori yoqobo, izibalo neminikelo yokuhlola kugesi, uketshezi noketshezi oluyinkimbinkimbi Bona i-https://aip.scitation.org/journal/phf. 00 am Eastern Time ngoNovemba 12, 2020, i-PassPass yezintatheli iyadingeka ukuze ufinyelele lezi zindaba. I-NewswisePressPass yenza izintatheli eziqinisekisiwe zikwazi ukufinyelela izindaba ezivinjelwe. Sicela ungene ngemvume ukuze ugcwalise isicelo sokudlula i-presspass. Uma ungakabhalisi, sicela ubhalise. Lapho ugcwalisa ifomu lokubhalisa, sicela uqinisekise ukuthi uyintatheli ngaphambi kokufaka ifomu lesicelo sokudlula kwabezindaba. Ucwaningo olwenziwa yi-UCLA Field School of Public Health luthole ukuthi ngisho imaskhi yendwangu elula inganciphisa ukusabalala kwamaconsi okuphefumula e-COVID-19 ngo-77%. Kuze kube yilapho isikhathi sokuvinjelwa siphela ngoNovemba 12, 2020 Eastern Standard Time, i-PassPass yentatheli iyadingeka ukuze ifinyelele lezi zindaba. Sicela ungene ngemvume ukuze ugcwalise isicelo sokudlula i-presspass. Uma ungakabhalisi, sicela ubhalise. Lapho ugcwalisa ifomu lokubhalisa, sicela uqinisekise ukuthi uyintatheli ngaphambi kokufaka ifomu lesicelo sokudlula kwabezindaba. Imiphumela ikhombisa ukuthi kudingeka ukuhlolwa okubanzi kokuqapha ukuze kwehliswe ukusabalala kwe-COVID-19 eqenjini Ngemuva kwezinyanga ezimbili kwesinye sezibhedlela ezingama-38 eMichigan, imiphumela yeziguli ze-COVID-19 ihlanganisa ukufa okuphezulu, ukulaliswa esibhedlela, ukuqhubeka ngokomzimba nangokwengqondo. izinkinga zempilo, izinkinga zemisebenzi yansuku zonke, nezinkinga zomsebenzi nezezimali. Ingxenye yemithi yokugoma iyamoshwa minyaka yonke ngoba ayigcinwa ibanda. I-Michigan Institute of Technology kanye nonjiniyela bamakhemikhali i-UMass Amherst bathole indlela yokusimamisa leli gciwane emuthini wokugoma onamaprotheni esikhundleni sezinga lokushisa. Abantu abeluleme ku-coronavirus bangakhiqiza amasosha omzimba asebenzayo ngokumelene ne-SARS-CoV-2, azovela phakathi nezinyanga ezimbalwa ngemuva kokutheleleka. Lawa amasosha omzimba angase aguquke ekuphenduleni ama-antigen egciwane ayinsalela afihlwe emathunjini. Abaphenyi baseKarolinska Institute eSweden bahlole zonke izifundo ze-COVID-19 ezikhishwe ekuqaleni kwalesi sifo. Ucwaningo olusha oluvela e-Notre Dame luhlole ubuntu obusebenzayo okokuqala ngqa ukuphendula inkinga (okungukuthi, esibhedlela e-Wuhan, e-China, lapho umqedazwe we-coronavirus, ezigabeni zokuqala zobhubhane lwe-COVID-19). I-Newswise inikeza izintatheli ukufinyelela ezindabeni zakamuva futhi inikeza inkundla yamanyuvesi, izikhungo nezintatheli ukusabalalisa izindaba ezinkulu kubabukeli bazo.