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Overuse of a humidifier can raise the relative humidity to excessive levels, promoting the growth of dust mites and mold, and can also cause hypersensitivity pneumonitis (humidifier lung). [10] A properly installed and located hygrostat should be used to monitor and control humidity levels automatically, or a well-informed and conscientious ...
Although the humidifying capacity of a bubble respiratory gas humidifier is rather low, it may be improved by increasing the water temperature. A bubble bottle is mostly used in oxygen therapy with high flow rates via a mask, nasopharyngeal catheter, or nasal cannula in order to prevent drying of the mucous membranes in the nose and mouth.
The development of heated humidified high flow started in 1999 with Vapotherm introducing the concept of high flow use with race horses. [2]High flow was approved by the U.S. Food and Drug Administration in the early 2000s and used as an alternative to positive airway pressure for treatment of apnea of prematurity in neonates. [3]
A humidistat or hygrostat is an electronic device analogous to a thermostat but which responds to relative humidity, not temperature. A typical humidistat is usually included with portable humidifiers or dehumidifiers. It can also be included with combined air cleaner or humidifier units to control a home's humidity level or any other indoor ...
The condensate should not be directed into a septic system of a house, because it does not need special treatment as effluent. When the height of the air handler (containing the evaporator) is above the level of the surface drains used for rainwater, the condensate drain lines can often be routed into them. Air handlers located below grade ...
The sale was a cash stock deal for just under $1 billion. According to a February 2011 article in Business Insider, Sonic yielded the highest return of any publicly traded company on the NYSE or NASDAQ markets. [10] Both stocks rose on the deal announcement, creating a 66% premium above market. The acquisition was completed early the next year.
Wetted medium: A fine fibrous medium in the airstream is kept moist with fresh water from a header pipe with a series of small outlets. As the air passes through the medium it entrains the water in fine droplets. This type of humidifier can quickly clog if the primary air filtration is not maintained in good order.
[28] [29] In vertebrates, the development of limbs and digits depends on the secretion of sonic hedgehog by the zone of polarizing activity, located on the posterior side of the embryonic limb bud. [13] Mutations in the human sonic hedgehog gene SHH cause holoprosencephaly type 3 HPE3, as a result of the loss of the ventral midline.