. . . . . . . "20028234"^^ . . . . . . . . . "La profondeur narcotique \u00E9quivalente (PNE) (en anglais : Equivalent narcotic depth (END)) est utilis\u00E9 dans la plong\u00E9e technique comme moyen d'estimer l'effet narcotique d'un m\u00E9lange de gaz respiratoire tel que l'h\u00E9liox et le trimix. La m\u00E9thode consiste, pour un m\u00E9lange et une profondeur donn\u00E9s, \u00E0 calculer la profondeur qui produirait le m\u00EAme effet narcotique lors de la respiration."@fr . . . . "Equivalent narcotic depth"@en . "Equivalent narcotic depth (END) is used in technical diving as a way of estimating the narcotic effect of a breathing gas mixture, such as heliox and trimix. The method is, for a given mix and depth, to calculate the depth which would produce the same narcotic effect as when breathing air. The equivalent narcotic depth of a breathing gas mix at a particular depth is calculated by finding the depth of a dive when breathing air that would have the same total partial pressure of nitrogen and oxygen as the breathing gas in question.For example, a trimix containing 20% oxygen, 40% helium, 40% nitrogen (trimix 20/40) being used at 60 metres (200 ft) has an END of 32 metres (105 ft). Since air is composed of approximately 21% oxygen and 79% nitrogen, the narcotic gases make up 100% of the mix, or equivalently the fraction of the total gases which are narcotic is 1.0. Oxygen is assumed equivalent in narcotic effect to nitrogen for this purpose. In contrast, the oxygen and nitrogen component in a trimix containing, for example, 40% helium accounts for only 60% of the mix, i.e. a fraction of 0.6. In a trimix, the fraction of narcotic gases (oxygen and nitrogen) is equal to 1.0 minus the fraction of non-narcotic gas (helium)."@en . . "Equivalent narcotic depth (END) is used in technical diving as a way of estimating the narcotic effect of a breathing gas mixture, such as heliox and trimix. The method is, for a given mix and depth, to calculate the depth which would produce the same narcotic effect as when breathing air."@en . "La profondeur narcotique \u00E9quivalente (PNE) (en anglais : Equivalent narcotic depth (END)) est utilis\u00E9 dans la plong\u00E9e technique comme moyen d'estimer l'effet narcotique d'un m\u00E9lange de gaz respiratoire tel que l'h\u00E9liox et le trimix. La m\u00E9thode consiste, pour un m\u00E9lange et une profondeur donn\u00E9s, \u00E0 calculer la profondeur qui produirait le m\u00EAme effet narcotique lors de la respiration. La profondeur narcotique \u00E9quivalente d'un m\u00E9lange de gaz respiratoire \u00E0 une profondeur donn\u00E9e est calcul\u00E9e en trouvant la profondeur d'une plong\u00E9e en respirant de l'air qui aurait la m\u00EAme pression partielle totale d'azote (N\u00B2) et d'oxyg\u00E8ne (O\u00B2) que le gaz respiratoire en question. Par exemple, un trimix contenant 20 % d'oxyg\u00E8ne, 40 % d'h\u00E9lium, 40 % d'azote (trimix 20/40) utilis\u00E9 \u00E0 60 m\u00E8tres a une PEN de 32 m\u00E8tres."@fr . . "6575"^^ . . . . . . . "Profondeur narcotique \u00E9quivalente"@fr . "1119483202"^^ .