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5,030,660. The Zelinsky-Kummant gas mask is the world's first gas mask [1] with the ability to absorb a wide range of chemical warfare agents. The gas mask was developed in 1915 by Russian chemist Nikolay Zelinsky and technologist of the Triangle plant M.I. Kummant. [2] The design was later improved by I. D. Avalov and entered mass production.
Suicides using bags or masks and gases are well documented in the literature. [35] [36] Suicide bags have been used with gases other than inert gases, with varying outcomes. Examples of other gases used are propane-butane, [37] which has narcotic effects, [38] and is commonly adulterated with strong smelling additives to warn of gas leaks, and ...
Exophoria. Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward. [1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another. [2] The axis deviation in exophoria is usually mild compared with that of exotropia.
Takeaway. In other words, the idea is that listening to binaural beats can trigger or elicit certain brain states, such as focus or a reduction in pain when listened to at certain frequencies.
Eye glasses with an included prism power is the optical method to reduce a fixation disparity. Different procedures have been proposed to determine the required amount of prism for the individual. Based on prism-FD curves (Fig. 3b), one can find the aligning prism sP 0 that nullifies the naturally prevailing fixation disparity sFD 0. This test ...
Stroupe says that turning to the product removed the “give and take” between he and Mahomes, allowing the NFL star to have his coffee while getting the nutritional benefits the trainer wanted ...
A Polish SzM-41M KF gas mask, used from the 1950s through to the 1980s. A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face.
An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness.