Optical microscopic study of surface morphology and filtering efficiency of face masks

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Here’s a study if you’re interested in more details besides the parts I highlighted. https://t.co/UCfO4JsVsp https://t.co/TlUY8M3Jk7
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1844 days ago
@TrsOito1 @depjesse diversos, amigo, diversos. https://t.co/DnffL3OHx1 https://t.co/jTIz0Nf8gY https://t.co/6ELiL1xS5q https://t.co/fLjKwyk637
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1944 days ago
@kshetry_yogank @theyatriji @smadixit @AP1TV_Official https://t.co/AAOxGoEWnX https://t.co/qGEgku6Cr4
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1965 days ago
हाम्रो अध्ययनको लिंक यहा छ। https://t.co/gZQ3nJImlC
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1984 days ago
Cloth masks... https://t.co/JIFdBMvrWW One of many many studies. Conclusion: That bandanna or scarf you made at home, not effective at all. https://t.co/xepHX1GH1K
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1995 days ago
RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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1995 days ago
@tickerguy https://t.co/qj7jNhY3Ye
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1995 days ago
RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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1995 days ago
RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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1996 days ago
RT @Tony__Heller: This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable mate…
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This is from the City of San Francisco website : "A face covering can be made of cloth, fabric, or other permeable material, but it should not have holes." These are microscope pictures of masks. The word "permeable" implies that it has holes. https://t.co/aSNV7i4wwB https://t.co/9tQ3Qx0syH
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2005 days ago
@SSG_PAIN @BardsFM @WhiteHouse https://t.co/mw17eArR68 "We studied the effect of surface morphology of locally available face masks on their PM filtering efficiency. Filtering efficiency of CM for ambient PM10 was poorer than in SM. The poor efficiency was due to the presence of larger sized pores. Our study
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The 31289698 one was not suggesting wearing masks. Quite the contrary. They were suggesting some masks are better than others and governments in countries that use masks publicly should advertise best practices to keep pore size small. https://t.co/gOgwMvVmk1
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2006 days ago
RT @yankeecannuck: @174all @Cleavon_MD The 31289698 one was not suggesting wearing masks. Quite the contrary. They were suggesting some mas…
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@174all @Cleavon_MD The 31289698 one was not suggesting wearing masks. Quite the contrary. They were suggesting some masks are better than others and governments in countries that use masks publicly should advertise best practices to keep pore size small. https://t.co/gOgwMvVmk1
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@ArmedDamsel @ChrisR00str @Mistierain @MelissaPrejean9 @themodalice @senatemajldr 1/2 Citing #5: This study is from June, 2019, and has nothing to do with COVID 19. COVID 19 particles are larger than the aeresol tested. https://t.co/cHlKQPxf5l
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This article has some excellent optical microscope images of fabrics that show why nonwoven materials are important in mask construction. Fabric image links welcome- there's another STEM image I can't seem to find anymore that showed materials very well. https://t.co/yVkQq3757y
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@NGH55786571 @Dubya151 @elizabethwick8 @McauleyHolmes There is very little scientific evidence to show that home-made masks are effective in preventing the spread of viruses. https://t.co/gPotbwQoKM https://t.co/QUH4DlsIu3 Even then, masks are only a single aspect of combating the spread, & people are not exactly rich right now.
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@EVARCba @acsnano Acá Eva hay un trabajo que fueron midiendo efectividad luego de algunos lavados. Encontraron que luego de 4 lavados la efectividad cayó un 20%. Se lo atribuyen a que se van perdiendo microfibras. https://t.co/jGttP3pOxj
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2059 days ago
RT @mentalplex: 3. https://t.co/hD06dmPBJU Study about the effectiveness of cloth masks for protecting against air pollution from, e.g., e…
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3. https://t.co/hD06dmPBJU Study about the effectiveness of cloth masks for protecting against air pollution from, e.g., engine exhaust (not about viral transmission). No data or recommendations re: masks being a health risk.
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2106 days ago
2. https://t.co/tXEsmowNXe Optical microscopic study of surface morphology and filtering efficiency of face masks suggests washing & drying 4x alters pore size in cloth masks and reduces efficacy
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