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GASEOUS DISCHARGE [9 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 - external organization data 2011-10-18

English

Subject field(s)
  • Waste Management
  • Mining Wastes
  • Radioactive Ores (Mining)
  • Compartment - Canadian Nuclear Safety Commission
DEF

The placement of wastes in a dedicated repository with no intention of retrieval; [it] also includes approved discharge of liquid and gaseous wastes into the environment.

OBS

In all waste management considerations, the AECB distinguishes between storage (a method of containment with provision for retrieval), and disposal (a form of management in which there is no intent to retrieve, and which does not rely for its integrity on the continued need for human intervention for treatment, monitoring, or restriction of access).

French

Domaine(s)
  • Gestion des déchets
  • Déchets miniers
  • Minerais radioactifs (Mines métalliques)
  • Tiroir - Commission canadienne de sûreté nucléaire
DEF

Mise des déchets dans un dépôt destiné à cette fin, sans intention de les récupérer; [elle] comprend aussi le rejet autorisé de déchets liquides et gazeux dans l'environnement.

OBS

En gestion des déchets, la CCEA distingue entre «stockage» et «évacuation», selon que l'on veuille récupérer ou non les matières [stockées]. Dans le second cas, il faut que l'intégrité du dépôt ne dépende jamais d'aucune intervention humaine, qu'il s'agisse de traiter ou de contrôler les matières stockées, ou d'en interdire l'accès.

Spanish

Save record 1

Record 2 2010-03-19

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
DEF

The discharge into the atmosphere, in the gaseous state, of water derived from the saturated zone.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie
DEF

Flux, quantités d'eau soustraites à une nappe par ascension dans la zone non saturée et évaporation ou évapotranspiration (composante du bilan d'eau d'une nappe).

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Geología
DEF

Descarga que se produce en un acuífero cuando su zona saturada queda suficientemente próxima a la superficie del terreno para ser afectada por los fenómenos de la evapotranspiración.

Save record 2

Record 3 2003-02-14

English

Subject field(s)
  • Electrochemistry
  • Electrometallurgy
  • Atomic Physics
DEF

... atom or molecule which has gained one or more electrons in an electrolyte, and is therefore attracted to an anode, the positive electrode.

DEF

A negatively charged ion. [Definition standardized by ISO.]

OBS

Positively charged ions are cations, and negatively charged ions are anions.

OBS

Anions include all non-metallic ions, acid radicals, and the hydroxyl ion. In a primary cell, the deposition of anions on an electrode makes it the negative pole. Anions also exist in gaseous discharge.

OBS

anion: term standardized by ISO.

French

Domaine(s)
  • Électrochimie
  • Électrométallurgie
  • Physique atomique
DEF

Dans un conducteur électrolytique ou gazeux, ion chargé négativement, entraîné vers l'anode.

DEF

Ion chargé négativement. [Définition normalisée par l'ISO.]

OBS

anion : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Electroquímica
  • Electrometalurgia
  • Física atómica
DEF

Ión de carga negativa, que en la electrólisis se dirige al ánodo o electrodo positivo.

Save record 3

Record 4 1998-05-14

English

Subject field(s)
  • Analytical Chemistry
CONT

In 1956, Harley and Pretorius described a simple discharge detector for gas chromatography based on the electrical properties of a glow discharge, the voltage across the gaseous discharge being a function of the type of gas present. Druyvesteyn and Penning in 1940 reviewed the complex nature of the glow discharge, noting that the discharge is maintained by electrons emitted from the cathode which result from processes related to positive ion bombardment, photoelectric emission, and collisions with excited atoms. When trace quantities of a material eluted from a chromatographic column enter the detector(consisting of a small platinum disk cathode and a tungsten wire anode), a voltage change resulted which was recorded.

OBS

Using neon lamps Pitkethly found ... that these detector were current and pressure independent at 1-1.5 mS and 3-5 mm Hg .... In 1958, Roberts and Hinkle evaluated glow discharge tubes as detectors for compounds in the concentration range of 5-500 ppm and concluded that the detector was not applicable to general-purpose use .... More recently, Wilhite described glow discharge-type devices which act electrically similar to a gas-filled voltage-regulator tube ... Riley described the use of an argon purity meter, a glow-type discharge detector, for the determination of small concentrations (0-1500 ppm) of impurity gases in argon.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 4

Record 5 - external organization data 1995-01-04

English

Subject field(s)
  • Air Pollution
  • Water Pollution
  • Nuclear Waste Materials
  • Compartment - Canadian Nuclear Safety Commission
CONT

The remaining wastes are disposed of either by controlled discharge to the environment as gaseous and liquid effluents, or in the case of small quantities of lightly contaminated material, by treatment as conventional wastes with no requirement for special radiological precautions.

French

Domaine(s)
  • Pollution de l'air
  • Pollution de l'eau
  • Déchets nucléaires
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

Les autres déchets sont évacués, soit comme effluents gazeux et liquides par décharge contrôlée, soit comme déchets ordinaires qui ne nécessitent aucune précaution radiologique spéciale dans le cas de petites quantités de matières peu contaminées.

Spanish

Save record 5

Record 6 1993-07-15

English

Subject field(s)
  • Pulp Preparation (papermaking)
OBS

High-Consistency System. Figure 11-18 shows a representative system where pulp is handled in the 25% to 28% consistency range. Typically, a press is used to raise the feed consistency to about 30%. Fresh caustic or oxidized white liquor along with the magnesium protector is added to the pulp at the discharge of the press. A thick stock pump then transfers the pulp to a fluffer via a feed pipe in which a gas-tight plug is formed. The fluffed pulp flows down the pressurized reactor as a loose bed, while gaseous oxygen is continuously dissolved into the liquid phase and reacted with the pulp.... Oxygen gas is added to either top or bottom to maintain a partial pressure within the 90 to 130 psi range. Relief is taken from the head space at the top of the tower to remove combustibles and other noncondensible gases, and control overall reactor pressure. At the bottom of the tower, the reacted pulp is diluted with post-oxygen filtrate and pumped at about 6% consistency to a blow tank.

French

Domaine(s)
  • Préparation de la pâte à papier

Spanish

Save record 6

Record 7 1987-01-22

English

Subject field(s)
  • Signalling and Illumination (Air Transport)
CONT

The flashing lights should be white and the steady lights either white or gaseous discharge lights.

French

Domaine(s)
  • Signalisation (Transport aérien)
CONT

Les feux à éclats devraient être blancs et les feux fixes devraient être soit des feux blancs, soit des feux à décharge dans un gaz.

Spanish

Save record 7

Record 8 1981-01-26

English

Subject field(s)
  • Wastewater Treatment
  • Water Treatment (Water Supply)
CONT

Air drying. The air supply to the ozonizer must be very dry because the presence of water vapour produces a drop in the dielectric constant of the gaseous medium, and in extreme cases the non-disruptive discharge may give way to the formation of an arc, resulting in rapid deterioration of the electrodes.

French

Domaine(s)
  • Traitement des eaux usées
  • Traitement des eaux
CONT

Dessiccation de l'air. Il est indispensable que l'air d'alimentation de l'ozoneur soit très sec, en effet, du fait de la présence de vapeur d'eau, il se produit un abaissement de la valeur de la constante diélectrique du milieu gazeux, ce qui peut entraîner à la limite le passage du régime d'effluve à un régime d'arc, avec pour conséquence la détérioration plus ou moins rapide des électrodes.

Key term(s)
  • dessiccation d'air

Spanish

Save record 8

Record 9 1975-03-11

English

Subject field(s)
  • Electrical Systems
CONT

Gaseous discharge arc. A surge must have penetrated the telephone power distribution panel.... It broke the insulation [of the splices] and set up a minor gaseous discharge between the conductors and the splices.

French

Domaine(s)
  • Ensembles électrotechniques
OBS

[...] propriétés de la décharge dans les gaz raréfiés. [...] suivant la tension et le débit de la source électrique, on peut obtenir le passage d'une étincelle, d'un arc ou d'une décharge ordinaire.

Spanish

Save record 9

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