denitrogenation


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de·ni·tro·gen·a·tion

(dē-nī-tro'jĕ-nā'shŭn),
Elimination of nitrogen from lungs and body tissues by breathing gases devoid of nitrogen.

denitrogenation

[dēnī′trōjənā′shən]
the elimination of nitrogen from the lungs and body tissues during a period of breathing pure oxygen. See also nitrogen washout curve.

denitrogenation

(de-ni?tro-jen-a'shun)
In aerospace medicine, the removal of nitrogen from the body of a person preparing to fly in an environment in which the barometric pressure will be much lower than at sea level. Prior to the flight, the person breathes 100% oxygen for a variable length of time, depending on the anticipated degree of reduced barometric pressure.
Synonym: preoxygenation See: decompression illness
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References in periodicals archive ?
Of the over 3,000 cement makers in China, only two in Xiangtan (Hunan Province), and another two in Chengdu (Sichuan Province) have denitrogenation and desulfurization processing, with about one third of cement makers unable to afford the equipment.
Denitrogenation, desulfurization, deoxygenation, C-H bond activation, C-C bond cleavage reactions, and even some aspects of olefin polymerization and metathesis were all covered by the presentations.
The quality of raffinate oil resembles that of 20# diesel, which can be used directly or as the raw material for catalytic cracking after denitrogenation to get more products.
This raffinate product is not suitable to be used as feed for catalytic cracking due to its high nitrogen content, but it can be used to produce light fuel oil after denitrogenation.
First, oxygen breathing at pressure reduces bubble size through Boyle's Law and denitrogenation of the tissues down a steep tension gradient promotes bubble nitrogen resorption and excretion.
This has been described by Beatty et al (28) in the setting of open abdominal surgery and confirmed by a subsequent study", and is due to initial denitrogenation of lung and body NZ stores followed by ongoing absorption of atmospheric NZ by exposed viscera.