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GAS SHIELD [12 records]

Record 1 2006-10-26

English

Subject field(s)
  • Chemistry
DEF

An inert light gas, He, which is odorless, colorless, and not flammable.

CONT

Helium is extracted from natural gas sources in the Texas and Oklahoma ... and Southwest Kansas ... The element is believed to be trapped in the natural gas pockets after disintegration from uranium and thorium.

CONT

... uses for helium[ :] filling party balloons as it is a much safer gas(non-flammable) ;widely used as an inert gas shield for arc welding; high speed push gas inside air to air missiles for guidance corrections; protective gas in growing silicon and germanium crystals, and in titanium and zirconium production; cooling medium for nuclear reactors, helium won’t become radioactive; a mixture of 80% helium and 20% oxygen is used as an artificial atmosphere for divers and others working under pressure; cryogenics and superconductivity; rare document preservation... Independence) ;as a gas for supersonic wind tunnels; pressurizing agent for liquid fuel rockets(inert so won’t react) ;leak detection agent for extremely small leaks; nuclear detonation simulations(using conventional explosives) ;isotopic dating by helium ratios(seawater, ocean beds, etc) ;helium/neon lasers; helium cardio-pulmonary resuscitation pump(heart surgery) ;helium filled border patrol "AEROSTAT" monitoring blimps.

OBS

Helium has an atomic number of 2, an atomic weight of 4, density of 0.1785 kg/m³ at STP. Helium can be liquefied at 4.2 K (-269°C).

French

Domaine(s)
  • Chimie
DEF

Gaz rare le plus léger.

OBS

(Élément de symbole He). Numéro atomique : 2. Masse atomique : 4,0026. Température de fusion : -269,7 °C. Température d'ébullition : -268,934 °C. Masse volumique : 0,126 g/cm³. État d'oxydation : 0.

OBS

Gaz rare utilisé en mélange pour la plongée profonde.

Spanish

Campo(s) temático(s)
  • Química
Save record 1

Record 2 - external organization data 2004-02-13

English

Subject field(s)
  • Geology
  • Compartment - Canadian Nuclear Safety Commission
CONT

Both types of information, i. e. the paleothermometry of fresh groundwaters, and noble gas over-pressurization concentrations in deeper shield brines, can be used to identify the origin and residence time of deep groundwaters.

French

Domaine(s)
  • Géologie
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

On peut utiliser ces deux types de données - la paléothermométrie de l'eau souterraine douce et la surconcentration due à la surpression des gaz rares dans les saumures profondes du Bouclier - pour déterminer l'origine et le temps de séjour des eaux souterraines profondes.

Spanish

Save record 2

Record 3 - external organization data 2004-02-13

English

Subject field(s)
  • Geophysics
  • Compartment - Canadian Nuclear Safety Commission
CONT

Both types of information, i. e. the paleothermometry of fresh groundwaters, and noble gas over-pressurization concentrations in deeper shield brines, can be used to identify the origin and residence time of deep groundwaters.

French

Domaine(s)
  • Géophysique
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

On peut utiliser ces deux types de données - la paléothermométrie de l'eau souterraine douce et la surconcentration due à la surpression des gaz rares dans les saumures profondes du Bouclier - pour déterminer l'origine et le temps de séjour des eaux souterraines profondes.

Spanish

Save record 3

Record 4 - external organization data 2004-02-13

English

Subject field(s)
  • Chemical Elements and Compounds
  • Compartment - Canadian Nuclear Safety Commission
CONT

Both types of information, i. e. the paleothermometry of fresh groundwaters, and noble gas over-pressurization concentrations in deeper shield brines, can be used to identify the origin and residence time of deep groundwaters.

French

Domaine(s)
  • Éléments et composés chimiques
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

On peut utiliser ces deux types de données - la paléothermométrie de l'eau souterraine douce et la surconcentration due à la surpression des gaz rares dans les saumures profondes du Bouclier - pour déterminer l'origine et le temps de séjour des eaux souterraines profondes.

Spanish

Save record 4

Record 5 - external organization data 2004-02-06

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
  • Compartment - Canadian Nuclear Safety Commission
CONT

Both types of information, i. e. the paleothermometry of fresh groundwaters, and noble gas over-pressurization concentrations in deeper shield brines, can be used to identify the origin and residence time of deep groundwaters.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

On peut utiliser ces deux types de données - la paléothermométrie de l'eau souterraine douce et la surconcentration due à la surpression des gaz rares dans les saumures profondes du Bouclier - pour déterminer l'origine et le temps de séjour des eaux souterraines profondes.

Spanish

Save record 5

Record 6 - external organization data 2004-02-02

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
  • Compartment - Canadian Nuclear Safety Commission
CONT

Both types of information, i. e. the paleothermometry of fresh groundwaters, and noble gas over-pressurization concentrations in deeper shield brines, can be used to identify the origin and residence time of deep groundwaters.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

On peut utiliser ces deux types de données - la paléothermométrie de l'eau souterraine douce et la surconcentration due à la surpression des gaz rares dans les saumures profondes du Bouclier - pour déterminer l'origine et le temps de séjour des eaux souterraines profondes.

Spanish

Save record 6

Record 7 - external organization data 2004-02-02

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
  • Compartment - Canadian Nuclear Safety Commission
CONT

Both types of information, i. e. the paleothermometry of fresh groundwaters, and noble gas over-pressurization concentrations in deeper shield brines, can be used to identify the origin and residence time of deep groundwaters.

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

On peut utiliser ces deux types de données - la paléothermométrie de l'eau souterraine douce et la surconcentration due à la surpression des gaz rares dans les saumures profondes du Bouclier - pour déterminer l'origine et le temps de séjour des eaux souterraines profondes.

Spanish

Save record 7

Record 8 2003-03-06

English

Subject field(s)
  • Orbital Stations
CONT

Kibo's Debris Shield. The International Space Station(ISS) wall is designed to protect the ISS and its crew from space debris. A debris shield is adopted for this particular purpose. A famous astronomer, Fred Whipple, devised this shield, so it is called a Whipple Shield. The idea is to attach a layer of thin aluminum plate outside the wall. When a space debris impacts this outer plate, the kinetic energy of the space debris is converted to heat. This heat creates a hole in the outer plate. However, the debris will evaporate or disintegrate to small particles consisting of gas, liquid and solids and will no longer be able to significantly damage the wall.... a stuffed-shield is adopted on the wall of the front side of Kibo, covering an area of 150 degrees. A stuffed shield binds several kinds of textile layers similar to a bulletproof vest between itself and the wall. This is a reinforced Whipple shield.

OBS

The International Space Station will be covered by 200 different types of protection.

OBS

debris shield: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Stations orbitales
CONT

[...] tous les modules de la Station spatiale internationale [seront équipés] de boucliers de protection, avec une exception logique pour certaines zones non critiques, comme les panneaux solaires. Deux cents types de protections différentes barderont l'ISS, mais en général elles se composeront d'un bouclier fait de plusieurs couches d'aluminium et de céramique renforcée au kevlar [...] capable d'arrêter une particule de 1 cm de diamètre dont la vitesse ne dépasse pas 7 km/seconde. [...] Dans le cas des modules d'habitation, le bouclier multi-couches [...] est maintenu à plusieurs centimètres de la surface de la paroi [pour une protection accrue].

OBS

bouclier de protection : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 8

Record 9 2000-06-08

English

Subject field(s)
  • Long-Distance Pipelines
  • Transport of Oil and Natural Gas
  • Petroleum Technology - Safety
DEF

... protection where pipeline coatings are subjected to rocky terrain, mountain handling, excessive abrasion and damaging backfills.

CONT

Pipe Saver Rock Shield helps maintain cathodic flow in natural gas and oil pipelines. The durable plastic mesh is wrapped around the pipe to protect against debris and rock damage during back filling and against problems that certain soil conditions can cause after pipe is installed.

CONT

Rockshield Testing. Description. Tuff-N-Nuff is a non-woven mat consisting of small diameter (approximately 0.050") strands of PVC. The strands are bonded to each other in a controlled random pattern. The rock shield protects pipe coatings from direct impact during backfilling operations. It also provides long term protection by keeping hard objects in the backfill away from the pipe coating during operation of the line. Pipe may move laterally as well as longitudinally, and the rock shield is the first line of defense against damage to the coating and the pipe.

CONT

Rock shield for pipeline construction.

French

Domaine(s)
  • Canalisations à grande distance
  • Transport du pétrole et du gaz naturel
  • Sécurité (Technologie pétrolière)

Spanish

Save record 9

Record 10 1999-02-09

English

Subject field(s)
  • Arc Welding
OBS

Grade. Any of a number of purity standards for chemical products established by various specifications.

OBS

Argon : Use : Inert gas shield in arc welding, furnace brazing, plasma jet torches(with hydrogen),...

French

Domaine(s)
  • Soudage à l'arc
OBS

qualité: Critère permettant de distinguer, de hiérarchiser dans une même gamme de produits; catégorie (avec un adjectif, une apposition ou un complément) [...]

OBS

On emploie l'argon pour le remplissage des ampoules à incandescence à atmosphère gazeuse, dans certains tubes à gaz r aréfiés, dans les laboratoires, ainsi que dans le soudage ou la coupe à l' arc électrique et dans la fabrication de cristaux de silicium, où il constitue une atmosphère inerte.

Spanish

Save record 10

Record 11 1993-08-30

English

Subject field(s)
  • Arc Welding
DEF

Metal-arc welding using a consumable cored wire electrode with an inert gas shield from an external source.

French

Domaine(s)
  • Soudage à l'arc
DEF

Procédé de soudage à l'arc électrique avec un fil-électrode fourré fusible sous la protection d'un apport de gaz inerte.

Spanish

Save record 11

Record 12 1993-08-30

English

Subject field(s)
  • Arc Welding
DEF

Metal-arc welding using a consumable cored wire electrode with a non-inert(active) gas shield from an external source.

French

Domaine(s)
  • Soudage à l'arc
DEF

Procédé de soudage à l'arc électrique avec un fil-électrode fourré fusible sous la protection d'un gaz actif.

Spanish

Save record 12

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