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Kumu kūʻai kūʻai ʻo Bundor Din F4 Flanged 4 Inch Gate Valve Manufacturing With s Ductile Iron Sluice Valve Me ka Noho Paʻa.
2020-11-12
Hōʻike kēia wikiō ma hope o nā hiʻohiʻona i kahi hāmeʻa i hoʻonohonoho ʻia e Matt Staymates, āna i hoʻohana ai e hōʻike pehea e hiki ai i nā masks ke hoʻōki i ka hoʻolaha ʻana o COVID-19. Nūhou Nūhou-Washington, Nowemapa 10, 2020-Inā ʻike ʻoe i kekahi e ʻauwana ana i kahi hale kūʻai a i ʻole ma kahi ʻē aʻe, e ʻaʻahu ana i ka mask me ka valve, a makemake ʻoe e ʻike i ka palekana no ʻoe, a laila pono ʻoe e nānā. Ke aʻo nei ʻo Matthew Staymates, he mechanical engineer a me ka fluid dynamicist ma ka National Institute of Standards and Technology, i nā ʻano mask like ʻole e hoʻoholo ai i ka mea hiki ke hōʻemi i ka hoʻoili ʻana i ka maʻi. Ma ka "Fluid Physics" na AIP Publishing, ua wehewehe ʻo ia i ka ʻimi ʻana i ka dynamics kahe kumu o nā masks N95 me ka ʻole a i ʻole exhalation valve. No kēia hopena, ua hana ʻo ia i nā wikiō kupaianaha mai Schlieren imaging, kahi ala e ʻike ai i ka kahe wai a me ka hoʻopuʻi ʻana o ka mālamalama mai ka ʻili o kahi mea. Hoʻolālā ʻia ka valve exhalation ma ka mask N95 e hoʻomaikaʻi i ka hōʻoluʻolu o ka mea hoʻohana ma o ka hōʻemi ʻana i ke kūpaʻa kānana i ka wā exhalation. Ua ʻōlelo ʻo Staymates: "Ke hoʻopuka ʻoe, ua wehe ʻia kahi pā liʻiliʻi, no laila e hoʻokuʻu ʻia ka ea me ka ʻole o ka kānana ʻana i ka mea mask." "Hiki iaʻu ke hōʻike maka i ke kumu hana o ka valve exhalation, a hoʻohālikelike me ka ʻole o ia valve. Ua hoʻohālikelike ʻia ka N95." Ua ʻōlelo ʻo Staymates i kāna noiʻi e hōʻike ana ʻaʻole kūpono nā masks N95 me nā pahu exhalation no ka kānana ʻana i nā kulu hanu mai nā kānaka. Ua ʻōlelo ʻo ia: "ʻO kā mākou ʻike i kēia manawa ʻo ia ka ʻāpana o COVID-19 e hoʻolaha ʻia e nā ʻōpū hanu, no laila i kēia wā maʻi maʻi, ʻaʻole kūpono ʻo N95 me ka valve i ka mana kumu." Ua ʻike ʻo ia ʻo ka mask N95 me ka ʻole o ka valve hiki ke pale i ka hapa nui o nā kulu wai mai ke komo ʻana i ka mea mask. Ua hoʻokumu ʻo Staymates i kahi keʻena hoʻokolohua maikaʻi loa i kāna hale hana lāʻau e hoʻāʻo ai i nā ʻano masks a me nā mea hana. Ua hana ʻo ia i kahi ʻōnaehana exhalation artificial e hoʻohālike i ke ʻano o ke kahe o ka exhalation o ka poʻe maoli, a ua hana i kahi velocimeter pneumatic maʻamau e ana i kona ʻano kahe hanu. Ua hoʻohana ʻo ia i kēia ʻikepili ma ke ʻano he maʻamau no ka ʻōnaehana exhalation artificial. Ua ʻōlelo ʻo Staymates: "Ua hoʻolālā a kūkulu wau i kahi mīkini hana noe maʻamau i loko o ke poʻo mannequin. Hāʻawi ka mea hana noe i nā droplets e like loa me nā mea i hoʻopuehu ʻia e nā kānaka." Exhale, a ʻo ka mea hoʻoheheʻe noe ka mea e like me ka puhi paka." Ua ʻōlelo ʻo ia ʻo ka hoʻohana ʻana i ka schlieren imaging a me nā ʻenehana hiʻohiʻona kahe ʻē aʻe "e hoʻomau e kōkua iā mākou e hoʻomaopopo i ke ʻano o ka hana ʻana o nā masks a me nā pale maka i ka laha. o kēia maʻi." "Manaʻo wau e kōkua kēia hana e hoʻomaopopo i ka poʻe i ke kaʻina hana o kā mākou pane hui ʻana i kēia maʻi maʻi honua, ʻaʻole e kōkua nā valves me nā masks." Ua kākau ʻo Matthew Staymates "Flow visualization using schlieren imaging and light scattering on N95 respirators with a exhalation valve". E ʻike ʻia ia ma "Physics of Fluids" ma Nowemapa 10, 2020 (DOI: 10.1063/ 5.0031996). Ma hope o kēlā lā, hiki iā ʻoe ke kipa https://aip.scitation.org/doi/ 10.1063/5.0031996 Hoʻolaʻa ʻia ka Fluid Physics no ka hoʻopuka ʻana i nā manaʻo kumu, nā helu a me nā hāʻawi hoʻokolohua i ka hoʻoikaika kino kinoea, ka wai a me ka paʻakikī e nānā i ka https://aip.scitation.org/journal/phf. 00 am Eastern Time ma Nowemapa 12, 2020, koi ʻia kahi PassPass no nā mea nūpepa e komo i kēia nūhou. Hiki i ka NewswisePressPass ke komo i nā nūpepa i pāpā ʻia. E ʻoluʻolu e hoʻopaʻa i ka palapala presspass. Inā ʻaʻole ʻoe i kākau inoa, e ʻoluʻolu e hoʻopaʻa inoa. I ka hoʻopiha ʻana i ka palapala hoʻopaʻa inoa, e ʻoluʻolu e hōʻoia ʻoe he mea kākau moʻolelo ma mua o ke komo ʻana i ka palapala noi pass pass. Ua ʻike ʻia kahi noiʻi e ka UCLA Field School of Public Health e hiki i kahi mask lole maʻalahi ke hōʻemi i ka hoʻolaha ʻana o nā ʻōpū hanu COVID-19 e 77%. A hiki i ka pau ʻana o ka manawa embargo ma Nowemapa 12, 2020 Eastern Standard Time, koi ʻia ka PassPass o ka mea kākau moʻolelo e komo i kēia nūhou. E ʻoluʻolu e hoʻopaʻa i ka palapala presspass. Inā ʻaʻole ʻoe i kākau inoa, e ʻoluʻolu e hoʻopaʻa inoa. I ka hoʻopiha ʻana i ka palapala hoʻopaʻa inoa, e ʻoluʻolu e hōʻoia ʻoe he mea kākau moʻolelo ma mua o ke komo ʻana i ka palapala noi pass pass. Hōʻike nā hopena e pono ai ka hoʻāʻo ʻana nui e hōʻemi i ka hoʻolaha ʻana o COVID-19 i ka hui pūʻulu Ma hope o ʻelua mau mahina ma kekahi o nā halemai 38 ma Michigan, ʻo nā hopena o nā mea maʻi COVID-19 e pili ana i ka make kiʻekiʻe, rehospitalization, hoʻomau kino a me ka noʻonoʻo. pilikia olakino, pilikia hana o kēlā me kēia lā, a me nā pilikia hana a me ke kālā. Hoʻopau ʻia ka hapalua o nā lāʻau lapaʻau i kēlā me kēia makahiki no ka mea ʻaʻole mālama ʻia ke anu. Ua ʻike ka Michigan Institute of Technology a me UMass Amherst chemical engineers i kahi ala e hoʻopaʻa ai i ka maʻi i loko o kahi kano me ka protein ma mua o ka mahana. Hiki i nā poʻe i hoʻōla mai ka coronavirus ke hana i nā antibodies kūpono e kūʻē iā SARS-CoV-2, e ulu aʻe i loko o kekahi mau mahina ma hope o ka maʻi. Hiki ke ulu kēia mau antibodies i ka pane ʻana i ke koena o nā antigens viral huna i loko o ka ʻōpū. Ua ʻimi nā mea noiʻi ma ka Karolinska Institute ma Sweden i nā haʻawina COVID-19 i hoʻokuʻu ʻia i ka hoʻomaka ʻana o ka maʻi maʻi. Ua nānā ʻia kahi noiʻi hou mai Notre Dame i ke kanaka ikaika no ka manawa mua i ka pane ʻana i kahi pilikia (ʻo ia hoʻi, ma kahi haukapila ma Wuhan, Kina, ma ka epicenter o ka puka ʻana o ka coronavirus, i ka wā mua o ka maʻi maʻi COVID-19). Hāʻawi ʻo Newswise i ka poʻe nūpepa me ka loaʻa ʻana o nā nūhou hou loa a hāʻawi i kahi kahua no nā kulanui, nā ʻoihana a me nā mea nūpepa e hoʻolaha i nā nūhou nui i kā lākou poʻe e hoʻolohe ai.