Hnub tim 15, Nitride tshaj tawm tias nws yuav siv tib qhov nyiaj hauv qhov kev sim ntawm inactivating tus tshiab coronavirus ntawm wavelengths ntawm 222nm, 254nm thiab 275nm hauv kev koom tes nrog tus thawj coj ntawm Virus Center ntawm Clinical Research Department ntawm Sendai Medical Center ntawm lub National Hospital. Hauv kev sib piv ntawm lub teeb lub zog (chav J Joule) irradiating txhua qhov sib sib zog nqus ultraviolet wavelength, cov nyhuv inactivation ntawm 275nm yog sib npaug los yog siab dua 254nm.
◆ Background
Txij li thaum tus kws tshawb fawb German Harman Straver tau tshawb pom hauv xyoo 1901 tias cov teeb hluav taws xob ultraviolet tuaj yeem ua rau cov kab mob thiab cov kab mob tsis zoo nyob rau hauv qhov sib sib zog nqus ultraviolet rays, tib neeg tau siv mercury - muaj cov roj teeb ultraviolet ua cov roj tua kab mob. Vim hais tias lub teeb ultraviolet tsis siv tshuaj rau inactivation, nws tau ua tiav cov txiaj ntsig zoo hauv kev kho mob raws li txoj kev nyab xeeb thiab txhim khu kev qha inactivation yam tsis muaj cov khoom seem.
Nyob rau hauv xyoo tas los no, vim yog kev txhim kho ntawm cov tshuab semiconductor, qhov sib sib zog nqus ultraviolet lub teeb emitting diode UV LED nrog lub teeb pom kev txaus hauv qab 300nm thiab lub teeb wavelength emitted los ntawm excimer teeb ntawm 222 nm tau raug pov thawj tias muaj cov nyhuv sterilization tib yam thiab tau siv. . Txhawm rau sib piv thiab txheeb xyuas qhov ua kom tsis muaj menyuam ntawm ob hom ultraviolet lub teeb nrog wavelengths ntawm 222nm thiab 275nm, qhov kev sim no tau ua tiav, thiab cov tsoos 254nm sterilization lub teeb tau siv los ua ib qho kev siv.
◆ Experimental content
Lub teeb ci ntawm txhua qhov emission wavelength, wavelength 222nm: excimer teeb, wavelength 254nm: UV (tsis tshua muaj siab mercury) teeb, wavelength 275nm: tob ultraviolet LED. Txij li thaum lub teeb pom kev ntawm txhua qhov teeb pom kev sib txawv, txhawm rau ua kom cov xwm txheej zoo ib yam, qhov ntev ntawm lub sijhawm rau kev teeb pom kev zoo ntawm cov khoom raug hloov kho raws li lub teeb pom kev ntawm txhua qhov teeb pom kev zoo, yog li ntawd lub teeb pom kev zoo (kev sib xyaw lub teeb) yog tib yam.
Tsis tas li ntawd, vim muaj ntau qhov kev sim txwv tsis pub tuaj yeem pom nyob rau hauv cov kev ntsuam xyuas zoo sib xws nyob rau hauv qhov xwm txheej tshwj xeeb, qhov kev ncua deb ntawm lub teeb ci thiab cov khoom yog raws li qhov kev xav ntawm qhov kev thov tiag tiag hauv ib puag ncig kev kho mob, thiab cov pab pawg sim tau teeb tsa rau 500 hli. kom tau txais txiaj ntsig Cov nyhuv inactivation.
Daim duab no qhia txog qhov tshwm sim ntawm cov kab mob seem ntawm OC43 tus mob coronavirus txuas rau saum npoo lub sijhawm. Ob daim ntawv xiav xiav nyob rau hauv qhov kev siv sib raug rau tus qauv qhov tseem ceeb ntawm qhov kev xeem. Lawv yog cov qauv smear tsuas yog tom qab tsim. Cov qauv qub yog muab tso rau hauv lub txee ruaj ntseg ntawm 22 degree 30-35 feem pua RH rau 12 feeb.
Siv cov txiv kab ntxwv, daj, xiav, ntsuab, thiab grey tuav ntawm txhua lub wavelength nyob rau hauv ib chav huv huv huv huv ntawm 20 degree thiab 8-14 feem pua RH, thiab tos kom txog thaum cov qauv smear qhuav tag raws li txoj cai. . Qhov tshwm sim ntawm lub teeb siv irradiation yog txiv kab ntxwv 0.7 J / m2, daj 5 J / m2, xiav 15 J / m2, ntsuab 30 J / m2, grey 60 J / m2, thiab lub teeb ci siv yog qhov tshwm sim ntawm irradiating los ntawm qhov deb ntawm 50 cm ntawm sab laug. Raws li pom hauv daim duab.
Hais txog qhov kev hloov pauv ntawm cov kab mob seem nyob rau lub sijhawm, piv nrog rau {{0}}.0 J/m2 txiv kab ntxwv bar daim duab, qhov luv bar ntev, qhov siab dua qhov cuam tshuam tsis ua haujlwm. Nws yog tsim nyog sau cia tias 60J / m2 grey bar teeb nrog qhov loj tshaj plaws ntawm irradiated lub teeb qhia qhov luv tshaj plaws ntawm 275nm, ua raws li lub wavelength ntawm 254nm, thiab thaum kawg ntawm 222nm.
◆ Meaning
Piv nrog rau 254nm wavelength siv los ua txoj kab kev ua kom tsis muaj menyuam nyob rau yav dhau los, qhov tshwm sim yog tias 275nm wavelength muaj tib yam lossis zoo dua inactivation cuam tshuam rau pseudo-tus kabmob tshiab. Qhov no yog raws li cov txheej txheem rau kev tshem tawm tag nrho cov mercury uas tau teev tseg hauv United Nations Environment Program (UNEP) Minamata Convention, uas teev cov kev tshem tawm tag nrho ntawm mercury thiab qhia tau tias nws tuaj yeem siv los ua lwm qhov teeb pom kev zoo.
GMKJ Technology tau koom nrog kev noj qab haus huv thiab ntse lub teeb ci, thiab muab kev lag luam nrog ntau yam ntawm UV UVA UVB UVC LED, infrared IR LED VCSEL cov khoom thiab cov kev pabcuam. Nws muaj ntau pua tus neeg ua haujlwm siab -cov koom tes zoo hauv kev lag luam hauv tsev thiab txawv teb chaws los koom ua ke txhawb kev siv lub teeb pom kev zoo los tsim lub neej noj qab haus huv thiab ntse. .
