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The device consists of a wire frame which is covered with several beds of gauze and applied to the patient's face over the mouth and nose. [2] Then high-volatility anesthetic (usually diethyl ether or halothane, and historically chloroform) is dripped on it, allowing the patient to inhale a mix of the evaporated anesthetic and air. The device ...
The mask was placed over the patient's mouth and nose, and anaesthetic was applied to the gauze, allowing the patient to inhale the anaesthetic as they breathed normally. Around the edge of the mask, a trough collected the residual anaesthetic, rather than allowing it to drip onto the patient's face.
A cloth face mask is a mask made of common textiles, usually cotton, worn over the mouth and nose.When more effective masks are not available, cloth face masks are recommended by public health agencies for disease source control in epidemic situations to protect others from virus-laden aerosols emitted by infected mask wearers' as they breathe, talk, cough, or sneeze.
The mask had two small nose holes and was a type of respirator that contained aromatic items. [6] The beak could hold dried flowers (commonly roses and carnations ), herbs (commonly lavender and peppermint ), camphor , or a vinegar sponge, [ 7 ] [ 8 ] as well as juniper berry , ambergris , cloves , labdanum , myrrh , and storax . [ 9 ]
The protection provided by an FFP2 (or FFP3) mask includes the protection provided by a mask of the lower-numbered classes. A mask conforming to the standard must have its class written on it, along with the name of the standard and its year of publication, as well as any applicable option codes, e.g. “EN 149:2001 FFP1 NR D”.
Iroquois oral history tells the beginning of the False Face tradition. According to the accounts, the Creator Shöñgwaia'dihsum ('our creator' in Onondaga), blessed with healing powers in response to his love of living things, encountered a stranger, referred to in Onondaga as Ethiso:da' ('our grandfather') or Hado'ih (IPA:), and challenged him in a competition to see who could move a mountain.
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