TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
ELECTRON CONCENTRATION [6 records]
Record 1 - internal organization data 2016-04-05
Record 1, English
Record 1, Subject field(s)
- Biochemistry
- Ecology (General)
Record 1, Main entry term, English
- anoxic
1, record 1, English, anoxic
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
[Said of a] condition in which the concentration of dissolved oxygen is so low that certain groups of micro-organisms prefer oxidized forms of nitrogen, sulfur, or carbon as an electron acceptor. 2, record 1, English, - anoxic
Record number: 1, Textual support number: 1 CONT
... phosphatic sediments are thought to have formed under anoxic bottom conditions that resulted from heavy outfall of decaying organic matter ... 3, record 1, English, - anoxic
Record number: 1, Textual support number: 1 OBS
anoxic: term and definition standardized by ISO. 4, record 1, English, - anoxic
Record number: 1, Textual support number: 1 PHR
Anoxic environment, anoxic water column. 5, record 1, English, - anoxic
Record 1, French
Record 1, Domaine(s)
- Biochimie
- Écologie (Généralités)
Record 1, Main entry term, French
- anoxique
1, record 1, French, anoxique
correct, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
[Se dit d'un] état dans lequel la concentration en oxygène dissous est si faible que certains groupes de micro-organismes préfèrent les formes oxydées de l'azote, du soufre ou du carbone comme accepteur d'électron. 2, record 1, French, - anoxique
Record number: 1, Textual support number: 1 CONT
Les cellules utilisèrent désormais l'oxygène pour leur respiration. [...] De nombreux Procaryotes intolérants s'éteignirent; d'autres se réfugièrent dans des habitats anoxiques (tels les milieux plus profonds). 3, record 1, French, - anoxique
Record number: 1, Textual support number: 1 OBS
anoxique : terme et définition normalisés par ISO. 4, record 1, French, - anoxique
Record number: 1, Textual support number: 1 PHR
Colonne d'eau anoxique, milieu anoxique. 5, record 1, French, - anoxique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Bioquímica
- Ecología (Generalidades)
Record 1, Main entry term, Spanish
- anóxica
1, record 1, Spanish, an%C3%B3xica
correct
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
[Dícese de la] condición en la cual la concentración de oxígeno disuelto es tan baja que algunos grupos de microorganismos prefieren usar formas oxidadas de nitrógeno, azufre o carbono como aceptadores de un electrón. 1, record 1, Spanish, - an%C3%B3xica
Record 2 - internal organization data 2008-08-22
Record 2, English
Record 2, Subject field(s)
- Industrial Techniques and Processes
- Electronic Circuits Technology
- Printed Circuits and Microelectronics
Record 2, Main entry term, English
- very high frequency glow discharge
1, record 2, English, very%20high%20frequency%20glow%20discharge
correct
Record 2, Abbreviations, English
- VHF-GD 2, record 2, English, VHF%2DGD
correct
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The microstructure of a series of silicon films deposited by very high frequency glow discharge(VHF-GD) with silane concentration in hydrogen varying from 100% down to 1. 25% has been observed with transmission electron microscopy(TEM). 2, record 2, English, - very%20high%20frequency%20glow%20discharge
Record 2, French
Record 2, Domaine(s)
- Techniques industrielles
- Technologie des circuits électroniques
- Circuits imprimés et micro-électronique
Record 2, Main entry term, French
- technique VHF-GD
1, record 2, French, technique%20VHF%2DGD
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
[Cellules au silicium amorphe et ses dérivés] par la technique VHF-GD (Very High Frequency Glow Discharge : décharge de type PECVD, mais à plus haute fréquence, 70 MHz), [...] les dépôts sont plus rapides, ce qui peut donner en laboratoire des cellules microcristallines de quelques microns d'épaisseur. 1, record 2, French, - technique%20VHF%2DGD
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2004-03-01
Record 3, English
Record 3, Subject field(s)
- Radio Waves
- Telecommunications
- Weather Stations and Meteorological Instruments and Equipment
Record 3, Main entry term, English
- polar cap absorption
1, record 3, English, polar%20cap%20absorption
correct
Record 3, Abbreviations, English
- PCA 2, record 3, English, PCA
correct
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Effect on radio waves in high latitudes, caused by a sudden increase in the electron concentration in the D layer of the ionosphere. 3, record 3, English, - polar%20cap%20absorption
Record number: 3, Textual support number: 1 CONT
Polar Cap Absorption. The ionisation of the D region over the polar latitudes by high energy solar protons causes radio blackouts for transpolar circuits which can last for several days. PCAs are almost always preceded by a major solar flare on the visible hemisphere of the sun. The time between the flare event and the onset of the PCA ranges from a few minutes to several hours. 4, record 3, English, - polar%20cap%20absorption
Record number: 3, Textual support number: 1 OBS
The effect is produced by the influx of high energy solar protons; it begins a few hours after a solar flare is observed and may in exceptional cases persist for a few days. 3, record 3, English, - polar%20cap%20absorption
Record 3, French
Record 3, Domaine(s)
- Ondes radioélectriques
- Télécommunications
- Stations, instruments et équipements météorologiques
Record 3, Main entry term, French
- absorption au-dessus de la calotte polaire
1, record 3, French, absorption%20au%2Ddessus%20de%20la%20calotte%20polaire
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- absorption à la calotte polaire 2, record 3, French, absorption%20%C3%A0%20la%20calotte%20polaire
feminine noun
- ACP 2, record 3, French, ACP
feminine noun
- ACP 2, record 3, French, ACP
- absorption dans la calotte polaire 3, record 3, French, absorption%20dans%20la%20calotte%20polaire
feminine noun
- PCA 4, record 3, French, PCA
feminine noun
- PCA 4, record 3, French, PCA
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Effet sur les ondes radioélectriques aux hautes latitudes, causé par l'augmentation soudaine de la concentration électronique dans la couche D de l'ionosphère. 1, record 3, French, - absorption%20au%2Ddessus%20de%20la%20calotte%20polaire
Record number: 3, Textual support number: 1 CONT
Les éruptions solaires peuvent être accompagnées de flux de particules de très haute énergie se propageant à une vitesse avoisinant celle de la lumière. Ces particules (principalement des protons et des électrons) pénètrent dans la haute atmosphère dans des régions situées près des pôles magnétiques. De ce fait, les niveaux inférieurs de l'ionosphère polaire deviennent très ionisés, ce qui provoque une absorption intense des signaux radioélectriques haute et très haute fréquence. Ce phénomène est connu sous le nom d'absorption à la calotte polaire (ACP) et peut durer plusieurs jours, voire plusieurs semaines dépendant de la puissance du flux des particules solaires et de l'emplacement de la région émettrice sur le Soleil. Il est souvent impossible d'établir des radiocommunications à haute fréquence pendant la durée des évènements d'ACP. 2, record 3, French, - absorption%20au%2Ddessus%20de%20la%20calotte%20polaire
Record number: 3, Textual support number: 2 CONT
Une PCA est souvent suivie dans les 48 heures par un début brusque d'orage magnétique puis d'une tempête géomagnétique mineure ou majeure, environ trois à huit heures plus tard. 4, record 3, French, - absorption%20au%2Ddessus%20de%20la%20calotte%20polaire
Record number: 3, Textual support number: 1 OBS
L'effet est produit par l'arrivée d'un flux de protons solaires de haute énergie. Il commence quelques heures après l'observation d'une éruption solaire et, dans des cas exceptionnels, il peut persister pendant quelques jours. 1, record 3, French, - absorption%20au%2Ddessus%20de%20la%20calotte%20polaire
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Ondas radioeléctricas
- Telecomunicaciones
- Estaciones, instrumentos y equipos meteorológicos
Record 3, Main entry term, Spanish
- absorción en el casquete polar
1, record 3, Spanish, absorci%C3%B3n%20en%20el%20casquete%20polar
feminine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Efecto en las altas latitudes sobre las ondas radioeléctricas ocasionado por un aumento repentino de la concentración de electrones en la capa D de la ionosfera. 1, record 3, Spanish, - absorci%C3%B3n%20en%20el%20casquete%20polar
Record number: 3, Textual support number: 1 OBS
Este efecto es producido por la llegada de protones solares de gran energía. Comienza unas horas después de que se ha observado una erupción solar y puede durar, aunque raras veces, unos días. 1, record 3, Spanish, - absorci%C3%B3n%20en%20el%20casquete%20polar
Record 4 - internal organization data 1996-03-08
Record 4, English
Record 4, Subject field(s)
- Analytical Chemistry
Record 4, Main entry term, English
- electron impact detector 1, record 4, English, electron%20impact%20detector
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Thermionic or Electron Impact Detector. In 1957, Ryce and Bryce described a sensitive ionization gauge based on the ionization potentials of vapors. It comprised a filament, a grid, and a plate. The potential difference between the filament and grid accelerated electrons which may ionize any gas in their path. If the grid potential is maintained at a level insufficient to ionize the helium carrier gas... no current flows in the plate circuit. If a potential difference of 18 V is maintained between the filament and the grid, compounds of lower ionization potential in the helium will be ionized and the positive ions produced will yield a cathode current, the current noted being a measure of the ion concentration. Into the modified ionizing chamber, operated at reduced pressure, a small fraction of the column effluent gas stream(less than 0. 5%) was allowed to flow into the gauge through a controlled leak. Over a 0. 02-l. 5 mm Hg pressure range, the sensitivity was approximately proportional to the pressure, and sensitivities in the range of 10[ minus superscript 12] mole were claimed. 1, record 4, English, - electron%20impact%20detector
Record 4, French
Record 4, Domaine(s)
- Chimie analytique
Record 4, Main entry term, French
- détecteur à impact d'électrons
1, record 4, French, d%C3%A9tecteur%20%C3%A0%20impact%20d%27%C3%A9lectrons
proposal, masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1992-12-31
Record 5, English
Record 5, Subject field(s)
- Telecommunications
- Weather Stations and Meteorological Instruments and Equipment
Record 5, Main entry term, English
- polar blackout
1, record 5, English, polar%20blackout
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- polar radio blackout 2, record 5, English, polar%20radio%20blackout
correct
- arctic blackout 3, record 5, English, arctic%20blackout
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
Failure of radio communication caused by polar cap absorption. 4, record 5, English, - polar%20blackout
Record number: 5, Textual support number: 1 CONT
An arctic blackout may last for days during periods of intense auroral activity. 3, record 5, English, - polar%20blackout
Record number: 5, Textual support number: 1 OBS
The K-Index is useful in determining the state of the geomagnetic field, the quality of radio signal propagation and the condition of the ionosphere. ... K-index values of 7 represent Severe Storm conditions and are often accompanied by "radio blackout" conditions (particularly over higher latitudes). 5, record 5, English, - polar%20blackout
Record number: 5, Textual support number: 2 OBS
polar cap absorption : Effect on radio waves in high latitudes, caused by a sudden increase in the electron concentration in the D layer of the ionosphere. 4, record 5, English, - polar%20blackout
Record number: 5, Textual support number: 3 OBS
radio blackout: Also called arctic blackout, blackout, polar blackout. 3, record 5, English, - polar%20blackout
Record 5, Key term(s)
- polar black-out
- polar black out
- arctic black-out
- arctic black out
- polar radio black-out
- polar radio black out
- arctic radio blackout
- arctic radio black-out
- arctic radio black out
- radio black out
- radio black-out
- radio blackout
Record 5, French
Record 5, Domaine(s)
- Télécommunications
- Stations, instruments et équipements météorologiques
Record 5, Main entry term, French
- extinction polaire
1, record 5, French, extinction%20polaire
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- extinction arctique 2, record 5, French, extinction%20arctique
feminine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Défaillance des communications radioélectriques causée par l'absorption au-dessus de la calotte polaire. 1, record 5, French, - extinction%20polaire
Record number: 5, Textual support number: 1 OBS
absorption au-dessus de la calotte polaire : Effet sur les ondes radioélectriques aux hautes latitudes, causé par l'augmentation soudaine de la concentration électronique dans la couche D de l'ionosphère. 1, record 5, French, - extinction%20polaire
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Telecomunicaciones
- Estaciones, instrumentos y equipos meteorológicos
Record 5, Main entry term, Spanish
- extinción polar
1, record 5, Spanish, extinci%C3%B3n%20polar
feminine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Fallo de las comunicaciones por radio debido a la absorción en el casquete polar. 1, record 5, Spanish, - extinci%C3%B3n%20polar
Record number: 5, Textual support number: 1 OBS
absorción en el casquete polar: Efecto en las altas latitudes sobre las ondas radioeléctricas, ocasionado por un aumento repentino de la concentración de electrones en la capa D de la ionosfera. 1, record 5, Spanish, - extinci%C3%B3n%20polar
Record 6 - internal organization data 1986-10-23
Record 6, English
Record 6, Subject field(s)
- Energy Transformation
- Electric Power Stations
Record 6, Main entry term, English
- Drude mirror
1, record 6, English, Drude%20mirror
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
It may be economically attractive to use a selective surface on the glass plate instead of on the absorber. This may be done, for example, with a glass plate whose lower surface has been covered with a very thin film of Sn02 or similar materials, the optical properties of which are determined solely by the free electron concentration, the so-called Drude mirrors. 1, record 6, English, - Drude%20mirror
Record 6, French
Record 6, Domaine(s)
- Transformation de l'énergie
- Centrales électriques
Record 6, Main entry term, French
- miroir de Drude
1, record 6, French, miroir%20de%20Drude
masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record 6, Spanish
Record 6, Textual support, Spanish
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