TERMIUM Plus^®

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auxiliary gases : The gases required for detector operation, e. g. hydrogen and air for flame detectors.  1, fiche 1, Anglais, - auxiliary%20gas

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Gas chromatography.  2, fiche 1, Anglais, - auxiliary%20gas

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auxiliary gas: The plural form of this term (auxiliary gases) and the plural definition were standardized by ISO in 2014.  2, fiche 1, Anglais, - auxiliary%20gas

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Gaz nécessaire pour faire fonctionner le détecteur, par exemple l’hydrogène et l’air pour les détecteurs à flamme.  1, fiche 1, Français, - gaz%20auxiliaire

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Chromatographie en phase gazeuse.  2, fiche 1, Français, - gaz%20auxiliaire

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gaz auxiliaire : terme et définition normalisés par l'ISO en 2014.  2, fiche 1, Français, - gaz%20auxiliaire

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Karmen reported a hydrogen flame ionization detector sensitive only to compounds containing phosphorus, bromine, chlorine, and iodine. He noted that halogens or phosphorus increased the electrical conductivity of the flame in the presence of a wire, ceramic, or glass probe containing a sodium compound.  1, fiche 2, Anglais, - probe

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Glass probe.  2, fiche 2, Anglais, - probe

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A method of welding in which hydrogen gas is passed through an arc between two tungsten electrodes.  5, fiche 3, Anglais, - atomic%20hydrogen%20welding

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The arc breaks down the molecules to form atomic hydrogen. The recombination of the atoms to form molecules and the combustion of the molecular hydrogen in atmospheric oxygen produce a flame temperature of 4000-5000°C.  5, fiche 3, Anglais, - atomic%20hydrogen%20welding

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atomic hydrogen welding; AHW: term and abbreviation standardized by the American Welding Society (AWS).  6, fiche 3, Anglais, - atomic%20hydrogen%20welding

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atomic hydrogen welding; AHW: term and abbreviation officially approved by the Lexicon Project Committee (New Brunswick).  7, fiche 3, Anglais, - atomic%20hydrogen%20welding

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[...] le soudage à l'hydrogène atomique consistant en une torche équipée de deux électrodes de tungstène autour desquelles s'échappe un courant d'hydrogène.  3, fiche 3, Français, - soudage%20%C3%A0%20l%27hydrog%C3%A8ne%20atomique

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soudage à l'hydrogène atomique; procédé AHW : termes uniformisés par le Comité du projet de lexiques (Nouveau-Brunswick).  4, fiche 3, Français, - soudage%20%C3%A0%20l%27hydrog%C3%A8ne%20atomique

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A colorless very poisonous gaseous compound SbH₃ of antimony and hydrogen that has a disagreeable odor and burns with a bluish green flame and that is usually made by decomposing metallic antimonides with acid.  3, fiche 4, Anglais, - stibine

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Chemical formula: SbH₃  4, fiche 4, Anglais, - stibine

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Formule chimique : SbH₃  3, fiche 4, Français, - stibine

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Nombre genérico de los derivados alquilos del antimonio.  1, fiche 4, Espagnol, - estibina

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Fórmula química: SbH₃  2, fiche 4, Espagnol, - estibina

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Properties : Yellowish-green or gray powder or lumps... Derivation : Barium sulfate(crude barite) and coal are roasted in a furnace. The melt is lixiviated with hot water, filtered, and evaporated. Impurities : Iron, arsenic... Use : Dehairing hides, flame retardant, luminous paints, barium salts, generating pure hydrogen sulfide.  3, fiche 5, Anglais, - barium%20sulfide

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Hypersonic propulsion. Color Enhanced Supersonic Hydrogen Flame Through funding from the Hyper-X Program Office at NASA Langley, an experimental study of a dual-mode scramjet combustor is being conducted at the Aerospace Research Laboratory of the University of Virginia. Using conventional instrumentation and multiple laser-based diagnostic techniques, the study aims to further the understanding of the fuel-air mixing and combustion processes within the combustor and to resolve the uncertainty in CFD predictions of such flows. The majority of the experiments are being conducted using a high-enthalpy, continuous-flow facility. This facility simulates Mach 5 flight of a scramjet operating with ramp fuel injection of hydrogen. NASA Langley is performing numerical modeling of the combustor and these results are being compared with the experimental measurements.  2, fiche 6, Anglais, - hypersonic%20propulsion

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Depuis une dizaine d'années, la recherche aéronautique s'intéresse à la propulsion hypersonique, permettant d'atteindre des vitesses supérieures à Mach 6. [...] La technologie de motorisation privilégiée pour la propulsion hypersonique est le statoréacteur, dont la particularité est qu'il n'embarque pas de comburant à bord mais capte celui-ci dans l'air environnant : l'air est capté en amont du moteur et comprimé par un système de tuyère convergente. Le mélange carburant embarqué-air comprimé brûle dans la chambre de combustion avant d'être décomprimé, provoquant ainsi l'accélération des gaz et la poussée nécessaire au vol.  2, fiche 6, Français, - propulsion%20hypersonique

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A sensitive flame ionization detector was developed for capillary column gas chromatography. The detector used no make-up gas and lower flow-rates of hydrogen and air to suppress detector noise and to achieve maximum response. The detector was responsive down to the 10 SUP-SUP 1 SUP 3 g level for C SUB 2-C SUB 1 SUB 1 hydrocarbons. Atmospheric hydrocarbons could be determined at parts per billion or parts per trillion levels by using gas chromatography with the detector via cryogenic concentration of a small volume of air sample.(Pascal Data Base).  2, fiche 7, Anglais, - flame%20ionization

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chromatographie à ionisation de flamme  2, fiche 7, Français, - %C3%A0%20ionisation%20de%20flamme

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Couplage de la chromatographie en phase dioxyde de carbone supercritique sur colonnes remplies avec la détection a ionisation de flamme. Applications à l'analyse des produits pétroliers. (Base de données Pascal).  3, fiche 7, Français, - %C3%A0%20ionisation%20de%20flamme

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[Se díce de los instrumentos que determinan el grado de] contaminantes basados en la medida de los iones que se forman en un proceso de combustión de hidrógeno cuando se introduce un contaminante.  1, fiche 7, Espagnol, - de%20ionizaci%C3%B3n%20a%20la%20llama

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A pool where the surplus hydrogen gas is burnt.  2, fiche 8, Anglais, - burn%2Doff%20pool

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It also has a wind dampening shield and four lightning-conductor towers, three separate flame trenches(one for the Vulcain engine and one for each booster), a 90 m high water tower with a storage capacity of 1500 m³ for table cooling and noise dampening on lift-off, connection facilities for the mobile cryogenic storage tanks, a 310 m² gaseous hydrogen burn-off pool.  3, fiche 8, Anglais, - burn%2Doff%20pool

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Piscine [...] résorbant le dangereux surplus d'hydrogène gazéifié durant le remplissage.  2, fiche 8, Français, - piscine%20de%20br%C3%BBlage

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Le gaz est transformé en bulles par son passage dans l'eau et détruit par des arcs électriques à son arrivée à la surface.  2, fiche 8, Français, - piscine%20de%20br%C3%BBlage

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L'installation de stockage et de remplissage d'oxygène liquide, une piscine de brûlage de l'hydrogène résiduel et un stockage réduit d'azote liquide sont spécifiques à chaque complexe de lancement.  3, fiche 8, Français, - piscine%20de%20br%C3%BBlage

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Halogenated extinguishing agents are hydrocarbons in which one or more hydrogen atoms have been replaced by atoms from the halogen series : fluorine, chlorine, bromine, or iodine. This substitution confers not only nonflammability but flame extinguishment properties to many of the resulting compounds. Halogenated agents are used both in portable fire extinguishers and in extinguishing systems.  3, fiche 9, Anglais, - halogenated%20agent

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Halogène extincteur [...] Alors que les hydrocarbures sont des corps inflammables et combustibles, leurs dérivés halogénés (combinaisons de certains d'entre eux avec le fluor, le chlore, le brome et l'iode) non seulement sont ininflammables mais, de plus, possèdent de réelles qualités extinctrices.  2, fiche 9, Français, - halog%C3%A8ne%20extincteur

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agent halogéné : terme uniformisé par le Groupe de travail de terminologie du génie.  4, fiche 9, Français, - halog%C3%A8ne%20extincteur

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A modified flame ionization detector in which the hydrogen flame is burnt at a jet with an alkali metal salt tip or with the alkali metal salt as a pellet just above the jet.  5, fiche 10, Anglais, - nitrogen%20phosphorus%20detector

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nitrogen phosphorous detector; NPD: term and abbreviation extracted from the "Disarmament and Peace Keeping" glossary with the permission of the United Nations Office at Geneva.  7, fiche 10, Anglais, - nitrogen%20phosphorus%20detector

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Le premier équivalent proposé dans SECHR est tiré d'un ouvrage intitulé : «Manuel pratique de chromatographie en phase gazeuse» de J. Tranchant et coll. publié chez Masson, Paris, 2e édition, 1968, p. xi-178.  6, fiche 10, Français, - d%C3%A9tecteur%20azote%2Dphosphore

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Le deuxième équivalent proposé dans SECHR est tiré d'un article intitulé : «Méthodes de contrôle de la pollution des eaux. Les pesticides et leur détermination dans les eaux de surface», signé par J. Lamathe, G. Maire, Ch. Magurno, paru dans la Tribune de CEBEDEAU, 34 : 446, 1981, p. 15-50.  6, fiche 10, Français, - d%C3%A9tecteur%20azote%2Dphosphore

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détecteur azote-phosphore; détecteur thermo-ionique : terme(s) tiré(s) du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  7, fiche 10, Français, - d%C3%A9tecteur%20azote%2Dphosphore

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In this form of transport detector for h. p. l. c. [high-performance liquid chromatography], the eluate is deposited upon a fine stainless steel wire that has been cleaned by being heated at 850°C. The volatile solvent is evaporated and the solute oxidized at 700-800°C in air to a mixture of carbon dioxide and water. The oxidation products are mixed with hydrogen and passed over a nickel catalyst at 330°C to give methane which is burnt in a flame ionization detector to give an electrical signal that can be amplified and recorded. The detector gives a linear response over a wide concentration range [...] The sensitivity has been improved and the noise level reduced by using either a ceramic(kaolin) or ceramic-metal(kaolin and copper) coating to the wire.  1, fiche 11, Anglais, - wire%20transport%20detector

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In the normal hydrogen flame, the 800°C temperature measured above the burner tip decreased progressively to 200 °C at position 8 cm above the tip, and the introduction of 8. 93 mg/min of toluene using a saturator at 27°C led to a temperature increase of about 100°C at all points in the flame.  2, fiche 12, Anglais, - saturator

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[...] interférant ajouté en concentration suffisamment élevée à la solution d'échantillon pour atteindre la saturation (plateau) de la courbe d'interférence.  1, fiche 12, Français, - saturateur

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Flame Emissivity Detector. Another detector based on monitoring a specific property of a flame, its emissivity, was developed by Grant, who mixed coal gas in constant proportions with the effluent from a chromatographic column; this coal gas/effluent mixture burned at a wide stainless steel jet. The emissivity of the flame, changing as the flame’s carbon content is varied, is measured with the aid of a metal reflector, glass condensing lens, and selenium photocell; these are held in place from each other at their proper optical distances .... For low background emissivity values, response is nonlinear. However, by controlling the coal gas flow rate to maintain emissivity between 0.60 and 0.80 mV, detector response is linear over a wide temperature range.  1, fiche 13, Anglais, - flame%20emissivity%20detector

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For the determination of combustible components of organic origin in gas chromatographic effluents, various principles of detection based on flame reactions have been utilized, namely, the hydrogen flame temperature, flame emissivity, and flame ionization detectors. In all reported systems, specific flame properties were monitored. Whereas Scott measured the flame temperature of the exit gas at a small jet and Grant the flame's emissivity by optical means, Mc William and Dewar and Harley et al. advanced new detection concepts based on the electrical or ionization properties of hydrogen/oxygen flames.  1, fiche 13, Anglais, - flame%20emissivity%20detector

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For the determination of combustible components of organic origin in gas chromatographic effluents, various principles of detection based on flame reactions have been utilized, namely, the hydrogen flame temperature, flame emissivity, and flame ionization detectors. In all reported systems, specific flame properties were monitored. Whereas Scott measured the flame temperature of the exit gas at a small jet and Grant the flame's emissivity by optical means, Mc William and Dewar and Harley et al. advanced new detection concepts based on the electrical or ionization properties of hydrogen/oxygen flames.  1, fiche 14, Anglais, - flame%20detector

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This is another g. c. detector in which the column effluent is destroyed by combustion in a hydrogen flame at a small glass capillary; the device measures changes in temperature of the flame detected by a thermocouple.  1, fiche 15, Anglais, - flame%20thermocouple%20detector

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In 1958, Primavesi et al. made a detailed investigation into the shape or thermal profile of the hydrogen/nitrogen flame as well as the response and noise of the detector at various heights above the jet.  1, fiche 16, Anglais, - thermal%20profile

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Kaye adapted a Beckman far-ultraviolet DK-2 spectrophotometer as a gas chromatographic effluent detector to record the spectra of eluted, absorbing materials. Using heated flow-through cells... coupled directly to the thermal conductivity cell' s outlet, he found that absorptivities of most organic vapors were sufficiently large to permit quantitative analysis, and in some instances identification, where specific absorption patterns could be attributed directly to a functional group in certain molecular species. Furthermore, the sensitivity of the far-ultraviolet detector for many compounds possessing intense absorption bands exceeds that of the normal thermal conductivity detector and, in some cases, the hydrogen flame ionization detector.  1, fiche 17, Anglais, - ultraviolet%20spectrophotometer%20detector

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As the flame lengthens and engulfs the thermocouple, the thermocouple output is fed through a circuit either to a spot galvanometer or a potentiometric recorder, the temperature change being directly related to(1) the amount of substance burned with hydrogen and(2) its molar heat of combustion.  1, fiche 18, Anglais, - spot%20galvanometer

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This increase in electrical conductivity resulted from the release of sodium vapor from the probe. Using a two-stage flame detection system, one flame placed above the other but separated from it by a sodium hydroxide-treated wire mesh screen, hydrogen gas was added to the effluent of the column, and the carrier gas-air-hydrogen mixture was burned in the lower flame detector with its resulting electrical conductivity being the same as that of the usual flame detector.  1, fiche 19, Anglais, - two%2Dstage%20flame%20detection%20system

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The high pressure(HP) flare which is 122 cm(48") in diameter is used to relieve pressure during emergencies. All relief valves and motor operated flare valves handling [hydrogen sulphide] are connected to the high pressure flare. The HP flare is first and foremost a safety and emergency system which will be used sparingly. The flare type is equipped with pilot lights which can be ignited electrically from the ground. Flame failures are detected by thermocouples, located at the tip and which actuate a flame failure alarm.  1, fiche 20, Anglais, - flame%20failure%20alarm

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Stabilité des flammes de mélange préalable : [...] Le mélange préalable sort par l'orifice de sortie du brûleur, à une vitesse qui dépend de la pression d'alimentation et du réglage de l'admission de comburant. Pour une certaine pression, la flamme est stable au-dessus de l'orifice de sortie. [...] L'expérience montre que si la pression d'alimentation, et en conséquence la vitesse de sortie du mélange, prennent des valeurs de plus en plus élevées, il existe une valeur limite au-delà de laquelle la flamme devient instable; une partie de sa base commence à s'éloigner de l'orifice de sortie. Ce phénomène est appelé «limite de décollement de la flamme». Pour une valeur plus élevée de la vitesse de sortie, la flamme oscille dans l'espace à une certaine distance de l'orifice. Ce phénomène est appelé flamme aérienne. Si la vitesse de sortie augmente encore, la flamme ne peut plus trouver une position d'équilibre au-dessus du brûleur: elle s'éloigne et s'éteint. C'est le phénomène du «soufflage de la flamme».  2, fiche 20, Français, - avertisseur%20d%27extinction%20de%20flamme

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Flame Photometric Methods. When SO₂ is burned in a hydrogen flame, the resulting electronically excited sulphur molecules emit light at 394 m wavelength which can be measured on a spectrophotometer. Several devices such as the Meloy FPD use this technique to measure SO₂. Time response of these systems is fast... and reliable, and thus these devices are becoming more commonly used in APM surveys. The device is a moderately expensive point monitor but can be used in a mobile mode.  1, fiche 21, Anglais, - flame%20photometric%20method

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it is... desirable that the welding flame be neutral, that is, that there be no excess of acetylene or hydrogen.  1, fiche 22, Anglais, - welding%20flame

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une lance conduisant le mélange formé à un ajustage ou buse à l'extrémité duquel le mélange, une fois allumé, formera la flamme soudante.  1, fiche 22, Français, - flamme%20soudante

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Le terme flamme de soudage a été accepté par le Comité des lexiques des métiers (Nouveau-Brunswick).  3, fiche 22, Français, - flamme%20soudante

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atomic hydrogen welding. A method of welding in which hydrogen gas is passed through an arc between two tungsten electrodes. The arc breaks down the molecules to form atomic hydrogen. The recombination of the atoms to form molecules and the combustion of the molecular hydrogen in atmospheric oxygen produce a flame temperature of 4000-5000 ° C.  1, fiche 23, Anglais, - atomic%20hydrogen

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Hydrogène dissocié en atomes à la température de l'arc électrique; il ne vit guère qu'une seconde, sa combinaison, en molécules met en jeu une quantité de chaleur élevée utilisée pour la soudure.  1, fiche 23, Français, - hydrog%C3%A8ne%20atomique

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the--of this hydrogen flame results in a nearly perfect weld  1, fiche 24, Anglais, - intensely%20reducing%20character

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(...) le pouvoir réducteur de l'hydrogène à l'état d'atomes, ou hydrogène atomique, est bien plus considérable que celui de l'hydrogène moléculaire.  1, fiche 24, Français, - pouvoir%20r%C3%A9ducteur%20consid%C3%A9rable

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the intensely reducing character of this -- results in a nearly perfect weld  1, fiche 25, Anglais, - hydrogen%20flame

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la -- possède de ce fait une température de l'ordre de 5000 degrés C  1, fiche 25, Français, - flamme%20de%20l%27hydrog%C3%A8ne%20atomique

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the result is a jet -- burning in a hydrogen atmosphere  1, fiche 26, Anglais, - flame%20of%20hydrogen

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la -- possède de ce fait une température de l'ordre de 5000 degrés C  1, fiche 26, Français, - flamme%20de%20l%27hydrog%C3%A8ne%20atomique

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The intensely reducing character of this hydrogen flame results in a nearly perfect weld.  1, fiche 27, Anglais, - reducing%20character

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[...] l'hydrogène atomique possède des propriétés réductrices très remarquables.  1, fiche 27, Français, - propri%C3%A9t%C3%A9s%20r%C3%A9ductrices

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