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ZONE DISPERSION [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-05-11

English

Subject field(s)
  • Wheels and Tires (Motor Vehicles and Bicycles)
CONT

A dual-compound, asymmetric tread has an "all-season zone" with an open tread pattern, aquachutes for water dispersion, and TredLock technology microgrooves.

Key term(s)
  • micro-groove

French

Domaine(s)
  • Roues et pneus (Véhicules automobiles et bicyclettes)
CONT

Ce genre de dessin est devenu possible à cause du développement des microlamelles et des microrainures. Celles-ci sont quasiment invisibles à l'œil nu, mais elles effectuent un travail convaincant dans l'évacuation de l'eau et de la gadoue, ce qui améliore considérablement l'adhérence du pneu sur chaussée détrempée, enneigée ou verglacée.

Key term(s)
  • micro-rainure

Spanish

Save record 1

Record 2 2004-10-26

English

Subject field(s)
  • Geochemistry
  • Geological Research and Exploration
  • Metals Mining
DEF

A geochemical anomaly resulting from primary dispersion.

CONT

Most mineral deposits include a central zone, or core, in which the valuable elements or minerals are concentrated.... [The] zone surrounding the core deposit is known as a primary halo or anomaly, and it represents the distribution patterns of elements which formed as a result of primary dispersion.

OBS

As opposed to "secondary dispersion halo."

Key term(s)
  • primary geochemical aureole

French

Domaine(s)
  • Géochimie
  • Recherches et prospections géologiques
  • Mines métalliques
CONT

Les auréoles primaires d'un corps minéralisé ou d'un gisement sont les zones de roches encaissantes entourant celui-ci, enrichies de certains éléments lors des processus de mise en place de la minéralisation.

CONT

Les métaux dispersés dans la roche encaissant un gîte de minéraux primaires forment une auréole de dispersion ou ceinture de minéraux primaires [...]

Spanish

Save record 2

Record 3 1989-07-31

English

Subject field(s)
  • Fires and Explosions
  • Occupational Health and Safety
CONT

To estimate the vapour concentrations downwind of an accident site for determination of the flammability or toxicity hazard zone, the atmospheric dispersion of a contaminant vapour is modelled as a "puff" or "plume" according to the decision tree given in Figure 3. A gas leak form a tank is considered a semi-continuous point source, modelling as a plume, whereas the release of a large amount of gas over a very short time period of the order of seconds to minutes is considered an instantaneous point source modelled as a puff.

French

Domaine(s)
  • Feux et explosions
  • Santé et sécurité au travail

Spanish

Save record 3

Record 4 1988-11-30

English

Subject field(s)
  • Air Pollution
  • Environmental Studies and Analyses
CONT

Vapour Dispersion Monograms.... The aim of the air dispersion nomograms is to define the hazard zone due to toxicity or flammability of a vapour cloud.... Figure 14 : vapour plume travel distance as a function of time elapsed since the spill and wind speed.

French

Domaine(s)
  • Pollution de l'air
  • Études et analyses environnementales
CONT

Nomogrammes de diffusion [sic : dispersion] du panache de vapeurs. (...) Figure 14 : Distance parcourue par le panache, calculée en fonction du temps écoulé depuis le déversement et pour différentes vitesses de vent.

Spanish

Save record 4

Record 5 1988-04-13

English

Subject field(s)
  • Geochemistry
  • Geological Research and Exploration
CONT

Dispersion pattern. Elements are distributed in earth materials in characteristic patterns which may be used as guides. A dispersion pattern is classed as primary if it is formed at depth by an igneous or metamorphic process, or secondary if formed at the earth’s surface by weathering, erosion, or surface transportation.

CONT

This zone surrounding the core deposit is known as a primary halo or anomaly, and it represents the distribution patterns of elements which formed as a result of primary dispersion.

French

Domaine(s)
  • Géochimie
  • Recherches et prospections géologiques
DEF

Organisation, disposition, répartition des éléments [...]

OBS

«Distribution» signifie à la fois l'action de distribuer et son résultat.

OBS

[...] les zones de distribution secondaire ont pris naissance dans des matériaux superficiels [...] à la suite de la distribution des éléments et des minerais [...]

OBS

La formation d'auréoles primaires de gisements endogènes nécessite un apport des éléments chimiques par les solutions minéralisantes, cet apport s'accompagnant alors d'une transformation plus ou moins grande des roches encaissantes par la redistribution de leurs composants.

Spanish

Save record 5

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