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Timeline CDC poster recommending the use of non-medical face masks to slow transmission of COVID-19. 2020 Early recommendations. Initially, the U.S. government did not recommend the use of face masks by the general public outside of medical settings to protect themselves from COVID-19, as to prevent shortages of medical-grade personal protective equipment (PPE) for doctors treating COVID-19 ...
Elon Reeve Musk (/ ˈ iː l ɒ n /; born June 28, 1971) is a businessman and investor.He is the founder, chairman, CEO, and CTO of SpaceX; angel investor, CEO, product architect, and former chairman of Tesla, Inc.; owner, executive chairman, and CTO of X Corp.; founder of The Boring Company and xAI; co-founder of Neuralink and OpenAI; and president of the Musk Foundation.
Surgical experiments Throughout the 1840s, J. Marion Sims, who is often referred to as "the father of gynecology," performed surgical experiments on enslaved African women, without anesthesia. The women— one of whom was operated on 30 times— suffered from infections and many failed surgeries before they were finally cured of vaginal fistula. The period during which Sims operated on ...
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...
An N95 respirator is a particulate-filtering facepiece respirator or elastomeric filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 classification of air filtration, meaning that it filters at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR Part 84.
Continuous positive airway pressure ( CPAP) is a form of positive airway pressure (PAP) ventilation in which a constant level of pressure greater than atmospheric pressure is continuously applied to the upper respiratory tract of a person. The application of positive pressure may be intended to prevent upper airway collapse, as occurs in ...
Overview. M.A.S.K. (an acronym for "Mobile Armored Strike Kommand") is a special task force led by Matt Trakker, who operate transforming armored vehicles in their ongoing battle against the terrorist organization V.E.N.O.M. (an acronym for Vicious Evil Network of Mayhem) with an emphasis on superpowered helmets (called "masks") worn by the characters of both factions.
The M40 field protective mask features three voicemitters, one on either the right or left side, and one in front. A voicecom adapter may be placed over the front voicemitter to amplify the user's voice. The mask can be adjusted in the field to accept the filtering canister on either side, so that a weapon may be shouldered.
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