TERMIUM Plus®
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HAZE COEFFICIENT [1 record]
Record 1 - internal organization data 2004-02-16
Record 1, English
Record 1, Subject field(s)
- Metrology and Units of Measure
- Environmental Studies and Analyses
- Air Pollution
Record 1, Main entry term, English
- coefficient of haze
1, record 1, English, coefficient%20of%20haze
correct
Record 1, Abbreviations, English
- COH 2, record 1, English, COH
correct
- CoH 3, record 1, English, CoH
correct
- coh 4, record 1, English, coh
Record 1, Synonyms, English
- haze coefficient 5, record 1, English, haze%20coefficient
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A unit of measurement for the concentration of particulates in air. 4, record 1, English, - coefficient%20of%20haze
Record number: 1, Textual support number: 1 OBS
A measurement of visibility interference in the atmosphere. 6, record 1, English, - coefficient%20of%20haze
Record number: 1, Textual support number: 1 CONT
Indirect measurements of particulate matter have historically been made using two methodologies: the British Smoke Shade (BSS) sampler and the AISI sampler, which measures Coefficient of Haze (CoH). Both the BSS and the CoH techniques are based on optical properties of particles and are most sensitive to the sooty components of PM that fall in the size range of approximately -3.5-4.5 µm in diameter. 3, record 1, English, - coefficient%20of%20haze
Record 1, French
Record 1, Domaine(s)
- Unités de mesure et métrologie
- Études et analyses environnementales
- Pollution de l'air
Record 1, Main entry term, French
- coefficient de transmission
1, record 1, French, coefficient%20de%20transmission
correct, masculine noun
Record 1, Abbreviations, French
- CoH 2, record 1, French, CoH
correct, masculine noun
Record 1, Synonyms, French
- indice d'opacité 3, record 1, French, indice%20d%27opacit%C3%A9
masculine noun
- COH 4, record 1, French, COH
correct, masculine noun
- COH 4, record 1, French, COH
- coefficient de brume 5, record 1, French, coefficient%20de%20brume
masculine noun
- indice de brume sèche 6, record 1, French, indice%20de%20brume%20s%C3%A8che
masculine noun
- indice de brume 6, record 1, French, indice%20de%20brume
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le COH («coefficient of haze unit») est le coefficient de transmission ou l'indice d'opacité (quantité de matières solides donnant une densité optique de 0,0l). [...] Les objectifs de qualité de l'air pour les particules en suspension (PES) ne peuvent être exprimés avec justesse par l'indice de qualité de l'air (IQUA) parce que les stations canadiennes n'utilisent pas des appareils de mesure en temps réel des concentrations de particules. Toutefois, en raison de l'importance de la concentration des particules relativement à l'IQUA, on peut envisager les solutions de rechange provisoires suivantes : - des mesures quotidiennes des teneurs de 24 h en PES (par échantillonneur à grand débit); - le sous-indice COH/visibilité; - le sous-indice COH/particules inhalables. 7, record 1, French, - coefficient%20de%20transmission
Record number: 1, Textual support number: 2 CONT
On a par le passé effectué des mesures indirectes des matières particulaires en utilisant deux méthodes : les échantillonneurs British Smoke Shade (BSS) et AISI, qui mesurent le coefficient de transmission (CoH). Ces deux méthodes sont basées sur les propriétés optiques des particules et sont extrêmement sensibles aux éléments fuligineux des matières particulaires qui se situent dans une gamme de tailles d'environ - 3,5-4,5 µm de diamètre. 2, record 1, French, - coefficient%20de%20transmission
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Metrología y unidades de medida
- Estudios y análisis del medio ambiente
- Contaminación del aire
Record 1, Main entry term, Spanish
- coeficiente de transmisión
1, record 1, Spanish, coeficiente%20de%20transmisi%C3%B3n
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
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