The nose may be best known for inhaling oxygen and exhaling carbon dioxide, but it also contributes to other important functions, such as tasting. The anatomy of the nose can be divided into the external nose and the nasal cavity. There are 12 cranial bones that contribute to the structure ...
material and is quite soft, and therefore a user feels quite comfortable when the soft nose plug is placed in the nasal cavities; due to the fact that the soft nose plug replaces fine tubes inserted into the nasal cavities, the sealing performance is good, and leakage of oxygen is avoided...
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[38]. This device heats permeable tubes filled with the chemical species of interest, releasing small amounts of them into an air flow. This enables one to reach ppb-level concentrations with accuracy and enables in-line setups with machine-operated preprogrammed experiments. This allows for the...