TERMIUM Plus®

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HALF MASK [3 records]

Record 1 1999-05-10

English

Subject field(s)
  • Protection of Life
  • Occupational Health and Safety
  • Fire-Fighting Apparel
CONT

Atmosphere-supplying Respirators. These provide a respirable atmosphere that is independent of the working environment. They may be classified in two ways: self-contained [and] Hose.

CONT

There are three types of respiratory protection : air-purifying respirators, supplied-air respirators and self-contained breathing apparatus.... Supplied-air respirators provide breathable air from an outside source and protect against very toxic particulates and gases at high concentrations. They have a compressed air source and an air hose connecting the air source to the breathing mask. The respirators may have half facepieces, full facepieces, hoods or helmets and the oxygen is supplied by pressure demand or continuous flow.

French

Domaine(s)
  • Sécurité des personnes
  • Santé et sécurité au travail
  • Tenues d'intervention (incendie)
CONT

Les masques [filtrants] ne protègent pas contre l'oxyde de carbone. Ils ne remplacent pas les appareils respiratoires à alimentation d'air, c'est-à-dire qu'on ne peut les utiliser dans les endroits où la teneur d'oxygène de l'air est dangereusement faible.

Spanish

Save record 1

Record 2 1999-03-05

English

Subject field(s)
  • Lithography, Offset Printing and Collotype
  • Life Cycle (Informatics)
OBS

In photolithography, light is used to transfer circuit patterns from a quartz template, or mask, onto the surface of a silicon chip.... Making features half as wide would yield transistors four times smaller, since the device is essentially two-dimensional. But it seems impossible to make such tiny parts using light; the light waves are just too wide. Many companies have invested in finding ways to substitute smaller x-rays for light waves. To date, however, x-rays have not succeeded as a way to mass-produce state-of-the-art chips.

French

Domaine(s)
  • Lithographie, offset et phototypie
  • Cycle de vie (Informatique)
OBS

Pour produire un microprocesseur par photolithographie, on reproduit le schéma du circuit sur un masque de quartz, puis on l'éclaire afin de projeter la figure sur une couche photosensible, à la surface de la puce de silicium. [...] En réalisant des traits deux fois moins larges, on fabriquerait des transistors quatre fois plus petits, puisque ces composants sont essentiellement en deux dimensions. Néanmoins, cette réduction semble impossible à réaliser par la technique actuelle, car les longueurs d'onde des ondes lumineuses utilisées aujourd'hui sont trop grandes. De nombreuses sociétés étudient une photolithographie par rayons X, dont les longueurs d'onde sont plus courtes, mais elles n'arrivent pas encore à fabriquer des microprocesseurs en série par cette méthode.

Spanish

Save record 2

Record 3 1991-12-20

English

Subject field(s)
  • Protection of Life
  • Occupational Health and Safety
  • Work Clothes
CONT

Constant flow airline respirators give a continuous flow of air into facepiece of respirator maintaining a positive pressure inside the mask ensuring user of a consistently reliable source of respiratory protection.

CONT

There are three types of respiratory protection : air-purifying respirators, supplied-air respirators and self-contained breathing apparatus.... Supplied-air respirators provide breathable air from an outside source and protect against very toxic particulates and gases at high concentrations. They have a compressed air source and an air hose connecting the air source to the breathing mask. The respirators may have half facepieces, full facepieces, hoods or helmets and the oxygen is supplied by pressure demand or continuous flow.

CONT

We offer a wide selection of continuous flow airline respirators and hoods, and pressure demand airline respirators....

CONT

continuous-flow mode.

French

Domaine(s)
  • Sécurité des personnes
  • Santé et sécurité au travail
  • Vêtements de travail
CONT

Les principaux types d'appareils de protection respiratoire isolants sont les appareils à air libre (...), les appareils à adduction d'air comprimé (du type à débit continu, du type à la demande et du type à la demande à pression positive) et les appareils autonomes (à circuit ouvert ou fermé).

Spanish

Save record 3

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