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10.1136/bmjopen-2020-039424 http://scihub22266oqcxt.onion/10.1136/bmjopen-2020-039424 32963071!7509966!32963071     free     free     free Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       BMJ+Open 2020 ; 10 (9): e039424 Nephropedia Template TP {{tp|p=32963071|t=2020. Ability of fabric face mask materials to filter ultrafine particles at coughing velocity |pdf=|usr=}}{{32963071}} gab.com Text Ability of fabric face mask materials to filter ultrafine particles at coughing velocity JO: BMJ Open http://www.kidney.de/pget.php?&tw=1&pmid=32963071 #FOAvip OBJECTIVE: We examined the ability of fabrics which might be used to create home-made face masks to filter out ultrafine (0.02-0.1 microm) particles at the velocity of adult human coughing. METHODS: Twenty commonly available fabrics and materials were evaluated for their ability to reduce air concentrations of ultrafine particles at coughing face velocities. Further assessment was made on the filtration ability of selected fabrics while damp and of fabric combinations which might be used to construct home-made masks. RESULTS: Single fabric layers blocked a range of ultrafine particles. When fabrics were layered, a higher percentage of ultrafine particles were filtered. The average filtration efficiency of single layer fabrics and of layered combination was found to be 35% and 45%, respectively. Non-woven fusible interfacing, when combined with other fabrics, could add up to 11% additional filtration efficiency. However, fabric and fabric combinations were more difficult to breathe through than N95 masks. CONCLUSIONS: The current coronavirus pandemic has left many communities without access to N95 face masks. Our findings suggest that face masks made from layered common fabric can help filter ultrafine particles and provide some protection for the wearer when commercial face masks are unavailable. Twit Text FOAVip Ability of fabric face mask materials to filter ultrafine particles at coughing velocity ????BMJ Open http://www.kidney.de/pget.php?&tw=1&pmid=32963071 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=32963071 #FOAvip English Wikipedia <ref>{{Cite pmid|32963071}}</ref> Ability of fabric face mask materials to filter ultrafine particles at coughing velocity #MMPMID32963071 O'Kelly E; Pirog S; Ward J; Clarkson PJ BMJ Open 2020[Sep]; 10 (9): e039424 PMID32963071show ga OBJECTIVE: We examined the ability of fabrics which might be used to create home-made face masks to filter out ultrafine (0.02-0.1 microm) particles at the velocity of adult human coughing. METHODS: Twenty commonly available fabrics and materials were evaluated for their ability to reduce air concentrations of ultrafine particles at coughing face velocities. Further assessment was made on the filtration ability of selected fabrics while damp and of fabric combinations which might be used to construct home-made masks. RESULTS: Single fabric layers blocked a range of ultrafine particles. When fabrics were layered, a higher percentage of ultrafine particles were filtered. The average filtration efficiency of single layer fabrics and of layered combination was found to be 35% and 45%, respectively. Non-woven fusible interfacing, when combined with other fabrics, could add up to 11% additional filtration efficiency. However, fabric and fabric combinations were more difficult to breathe through than N95 masks. CONCLUSIONS: The current coronavirus pandemic has left many communities without access to N95 face masks. Our findings suggest that face masks made from layered common fabric can help filter ultrafine particles and provide some protection for the wearer when commercial face masks are unavailable. |*Cough[MESH] |*Materials Testing[MESH] |*Particulate Matter[MESH] |*Textiles[MESH] |Air Filters[MESH] |Betacoronavirus[MESH] |COVID-19[MESH] |Cellulose[MESH] |Coronavirus Infections/prevention & control/*transmission[MESH] |Cotton Fiber[MESH] |Humans[MESH] |Masks/*supply & distribution[MESH] |Nylons[MESH] |Pandemics/prevention & control[MESH] |Pneumonia, Viral/prevention & control/*transmission[MESH] |Polyesters[MESH] |Polyurethanes[MESH] |Respiratory Protective Devices/supply & distribution[MESH] |SARS-CoV-2[MESH]Ability of fabric face mask materials to filter ultrafine particles at(epmc).pdf DeepDyve Pubget Overpricing