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The "Turk's head" brush design (top) prevents the stem coming into contact with the surface being cleaned. A Turk's head brush is a type of cleaning brush where the bristles are arranged covering the end of the stem as a half-sphere, so that the end of the stem does not come into direct contact with the surface being cleaned, especially when cleaning the inside of a cylindrical object.
The company opened a factory in Shanghai, China with 600 workers in the early 20th century to manufacture brush bristles to send to the Florence location for final production. [3] Makers of a highly advertised Pro-phy-lac-tic toothbrush , [ 4 ] the company was acquired by the Lambert Pharmaceutical Co. on February 19, 1930. [ 5 ]
An electric toothbrush, motorized toothbrush, or battery-powered toothbrush is a toothbrush that makes rapid automatic bristle motions, either back-and-forth oscillation or rotation-oscillation (where the brush head alternates clockwise and counterclockwise rotation), in order to clean teeth.
2012: Oral-B Trizone 1000 electric toothbrush with brush head shape and brushing technique similar to a manual brush. 2014: the first toothbrush with Bluetooth 4.0 Oral-B SmartSeries technology. 2017: New version of the battery, holds a charge 2 times longer and charges 2 times faster. 2019: Genius X toothbrush with artificial intelligence.
A non-return valve in the air supply line to the helmet failing (or absent on the earliest models of this type of diving suit), accompanied by a failure of the air compressor (on the surface) to pump enough air into the suit for the gas pressure inside the suit to remain equal to the outside pressure of the water, or a burst air supply hose.
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Rotarix vaccine for oral administration. Rotarix is a monovalent, human, live attenuated rotavirus vaccine containing one rotavirus strain of G1P[8] specificity.Rotarix is indicated for the prevention of rotavirus gastroenteritis caused by G1 and non-G1 types (G3, G4, and G9) when administered as a 2-dose series in infants and children. [19]
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