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CENTER SPAN [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2018-10-25

English

Subject field(s)
  • Tunnels, Overpasses and Bridges
CONT

Cable-stayed bridge.... It consists of girders or trusses cantilevering both ways from a central tower and supported by inclined cables attached to the tower at the top or sometimes at several levels... Usually two such assemblies are placed end to end to provide a bridge with a long center span.

Key term(s)
  • centre span

French

Domaine(s)
  • Tunnels, viaducs et ponts
CONT

Les ponts à haubans. Pour les grandes portées [...] il était logique d'envisager d'associer à un tablier en béton précontraint des haubans rectilignes. [...] cette idée était réalisée au pont de Maracaïbo [...] Les travées centrales de ce grand ouvrage sont formées de consoles, de part et d'autre des piles, soutenues par des haubans.

CONT

Dans le cas d'un ouvrage à plusieurs travées et lorsque le nombre de ces dernières est impair, celle du milieu prend le nom de «travée centrale».

OBS

travée : partie d'un tablier entre deux appuis successifs.

Spanish

Save record 1

Record 2 2013-12-02

English

Subject field(s)
  • Electronics and Informatics
  • Mathematics, Physics and Natural Sciences
  • Medicine and Health
  • Industries
DEF

An electrically conducting or semi-conducting nanofibre.

CONT

Two processes in nanotechnology by which nanowires can be manufactured are suspension and deposition. A suspended nanowire is held up by the ends in an evacuated chamber, and then is chemically etched or bombarded with high-speed atoms or molecules to reduce its diameter. Another method involves indenting the surface of a wire in the center of a suspended span, raising the temperature, and then stretching the wire while it is near its melting point. A deposited nanowire is fabricated on a surface consisting of some non-conducting substance such as plastic or glass. The process is similar to that by which semiconductor chips are grown, except that the result is a linear(one-dimensional) structure rather than a flat(two-dimensional) or solid(three-dimensional) structure.

CONT

A nanometer-scale wire [is] made of metal atoms, silicon, or other materials that conduct electricity. Nanowires are built atom by atom on a solid surface, often as part of a microfluidic device. They can be coated with molecules such as antibodies that will bind to proteins and other substances of interest to researchers and clinicians. By the very nature of their nanoscale size, nanowires are incredibly sensitive to such binding events and respond by altering the electrical current flowing through them, and thus can form the basis of ultra sensitive molecular detectors.

OBS

[It is an] extremely thin wire with a diameter on the order of a few nanometers (nm) or less, where 1 nm = 10-9 meter.

OBS

nanowire: term and definition standardized by the International Organization for Standardization (ISO).

PHR

Nanowire transistor.

Key term(s)
  • nano-wire
  • nanometre-scale wire
  • nano-meter scale wire
  • nano-metre scale wire
  • nano-scale wire
  • nano-sized wire

French

Domaine(s)
  • Électronique et informatique
  • Mathématiques, physique et sciences naturelles
  • Médecine et santé
  • Industries
DEF

Nanofibre électriquement conductrice ou semi-conductrice.

CONT

[...] les nanofils constituent aussi le système artificiel le plus abouti pour étudier les phénomènes quantiques (transport balistique, cohérence, excitations élémentaires) dans des systèmes unidimensionnels. La fabrication des nanofils permet d'obtenir des objets aux propriétés électroniques très intéressantes en raison de leur excellente cristallinité, mais aussi du contrôle de leurs dimensions et de leur composition chimique. Ce contrôle a rendu possible ces dernières années l'intégration de ces nanofils dans des composants tels que des transistors à effet de champ, des composants logiques, des diodes électroluminescentes, des lasers dont l'émission est commandée électroniquement et des capteurs.

OBS

[C'est un] fil extrêmement fin dont le diamètre mesure quelques nanomètres (nm) ou moins. (1 nm = 10-9 mètre).

OBS

nanofil : terme et définition normalisés par l'Organisation internationale de normalisation (ISO).

PHR

Nanofil de Si biotinylé.

PHR

Accrochage sur nanofil, biofonctionnalisation des nanofils.

PHR

Nanofil auto-assemblé, isolant, modifié par des anticorps récepteurs, moléculaire, semi-conducteur.

PHR

Caractéristique chimique, caractéristique physique, fonctionnalisation, manipulation, position de virus vis-à-vis des nanofils.

PHR

Position initiale, surface d'un nanofil.

Key term(s)
  • nano-fil

Spanish

Campo(s) temático(s)
  • Electrónica e informática
  • Matemáticas, física y ciencias naturales
  • Medicina y Salud
  • Industrias
CONT

Los nanocables son fibras cristalinas de aproximadamente una milésima del grosor de un cabello humano, y de sus propiedades inherentes se espera que permitan nuevas arquitecturas de fotodetección para dispositivos de imagen, memorias de almacenamiento, comunicaciones ópticas dentro de los chips y otras aplicaciones de escala nanométrica [...]

CONT

El objetivo de la electrónica molecular es construir circuitos electrónicos basados en el uso de moléculas. Para ello se requiere que sus componentes, es decir las moléculas, realicen funciones tales como conducir la electricidad (nanocables) o que sean capaces de funcionar como conectores o interruptores.

Save record 2

Record 3 2009-10-26

English

Subject field(s)
  • Tunnels, Overpasses and Bridges
CONT

The overall length of the bridge including approaches is over 4, 8 kilometers. The cantilevered section is 736 meters long and has a center span of 369 meters and a clearance of 42 meters.

OBS

cantilevered section: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Tunnels, viaducs et ponts
CONT

Le pont Jacques-Cartier. [...] La construction de la pile 24, soit l'une des deux piles principales portant la section cantilever de la structure, a été celle qui a présenté le plus de problèmes et qui fut à elle seule un défi de taille pour les ingénieurs.

OBS

section cantilever : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 3

Record 4 2002-12-04

English

Subject field(s)
  • Facilities and Instruments (Astronomy)
  • The Sun (Astronomy)
CONT

The Solar Particle Alert Network(SPAN) was implemented by the NASA Manned Spacecraft Center(MSC)-now [called] the Johnson Space Center-in Houston. It consisted of seven observatories located around the world to ensure 24-hour observations of solar activity. Hydrogen-alpha... telescopes were installed at all seven observatories to observe optical solar flares that produce solar particle events.

French

Domaine(s)
  • Installations et instruments (Astronomie)
  • Soleil (Astronomie)

Spanish

Save record 4

Record 5 1999-10-09

English

Subject field(s)
  • Tunnels, Overpasses and Bridges
CONT

The most notable and impressive steel truss bridge is the mammoth cantilever railway bridge across the Firth or Forth in Scotland.

OBS

Cantilever bridge : A three-span bridge consisting of two outer spans which are anchored to the shore and a middle span made up of two cantilever arms extending from the outer spans to a juncture at the center; sometimes a suspended span is interposed between the ends of the cantilever arms.

French

Domaine(s)
  • Tunnels, viaducs et ponts

Spanish

Save record 5

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