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POROUS PIPE [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-09-13

English

Subject field(s)
  • Sewers and Drainage
  • Transport of Water (Water Supply)
  • Applications of Concrete
DEF

Pipe made of concrete, varying in bore from 100 mm to several meters, porous for use as subsoil drains or capable of withstanding considerable water pressure.

OBS

concrete pipe: term officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Égouts et drainage
  • Adduction d'eau (Alimentation en eau)
  • Utilisation du béton
DEF

Élément fabriqué en béton, de section généralement circulaire ou ovoïde.

OBS

Tuyau fait de mélange de ciment Portland, d'agrégats et d'eau. Il est généralement armé pour résister aux pressions internes et aux charges d'écrasement.

OBS

tuyau en béton : terme uniformisé par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 1

Record 2 2010-02-16

English

Subject field(s)
  • Microbial Ecology
DEF

A small, immobilized bed, microbe bioreactor.

CONT

The bioreactor "plug" is made of slotted PVC pipe which is screw cap sealed at each end. Each plug is loaded with an inert porous material which serves as a structural support matrix for the microorganisms. The seed cultures in the bioplugs are a mixture of microorganisms selected for their abilities to biodegrade the contaminants of concern... The bioplugs are strategically inserted into the contaminated zone(s). Liquids then flow through the plugs by a pressure gradient created using compressed air. This flow acts to accelerate the movement of ground or irrigation water through the immobilized bed; thereby, facilitating the mineralization of organics within the aqueous phase and the bulk generation of biomass which bleeds off the bed.

French

Domaine(s)
  • Écologie microbienne
OBS

Terme concocté après discussion avec le département des affaires industrielles pour l'environnement de l'Institut de recherche en biotechnologie.

Spanish

Save record 2

Record 3 2001-10-04

English

Subject field(s)
  • Drainage and Irrigation (Agric.)
CONT

Drip Irrigation - A watering technique that reduces water use by 20 - 50%, utilizing a series of hoses and small emitters or porous tubing to deliver small amounts of water to individual plants.

CONT

Subsurface drip irrigation is a variation of traditional drip irrigation where the tubing and emitters are buried beneath the soil surface, rather than laid on the ground or suspended from wires. The products being used today in subsurface drip irrigation come in three basic configurations : hard hose, drip tape, and porous tubing.... Porous pipe products emit water all along the length of the tubing. There are literally thousands of places per meter where water weeps out of the tubing. This design has shown resistance to plugging by roots. The disadvantage is its flow path is by far the smallest of the three configurations. This increases the likelihood of plugging by fine particles. It typically has the largest coefficient of manufacturing variability of the three configurations, which can be a major detriment because it prevents high distribution uniformities and high efficiencies.

French

Domaine(s)
  • Drainage et irrigation (Agriculture)
CONT

Le goutte à goutte [...] permet de distribuer l'eau directement au pied des plantes, sans mouiller la partie supérieur (feuilles, fleurs, fruits). Il existe quatre techniques de goutte à goutte : le goutte à goutte mono fil : on ne pose qu'un seul goutteur ou un seul capillaire par plante ou par pot. Le goutte à goutte multitête : il s'agit d'une tête de distribution comportant 6, 8 ou 12 sorties. L'utilisation d'une gaine, un tube perforé tous les 30, 40 ou 50 cm. Les tubes poreux. L'eau est distribuée tout le long du tube du fait de la porosité du tube.

Spanish

Save record 3

Record 4 2001-09-14

English

Subject field(s)
  • Drainage and Irrigation (Agric.)
CONT

Drip Irrigation.... Water is delivered in small quantities under low pressure directly to... the root zone of the plants. You’ll need 1/2 inch polyethylene header pipe, and a roll of thin tape-like porous tubing. The header pipe connects to a garden hose and routes water through the garden. The pipe is placed either down the center or along one end of the garden. Small puncture holes are then made with a screwdriver into the header pipe at intervals corresponding to garden row. Eight-to ten-inch pieces of rubber connecting hose are then inserted into these holes. The other end of the connecting hose attaches to a length of porous tape. This tape is rolled out along each vegetable bed and cut to the same length as the row. Then end of the tape is then crimped to prevent water loss when the system is in use. Porous irrigation tape is best placed about three to four inches away from the base of the plants.

French

Domaine(s)
  • Drainage et irrigation (Agriculture)
CONT

Les rampes aplatissables sont appelées des gaines qui peuvent être simples ou doubles. On distingue divers types de gaines : - gaines perforées [...] - gaines poreuses : la paroi extérieure, composée de fibres «non tissées», laisse suinter l'eau à travers des pores de quelques micromètres. Gaines perforées et poreuses ne sont utilisables qu'à de faibles pressions et ne peuvent convenir que pour des cultures annuelles (maraîchage, fleurs) en terrain plat.

Spanish

Save record 4

Record 5 1981-01-26

English

Subject field(s)
  • Pipes and Fittings
  • Equipment and Tools (Water Supply)
  • Water Treatment (Water Supply)
CONT

The raw water under pressure enters the module through a porous flow-distributing pipe running through the centre of the module over its whole length.

French

Domaine(s)
  • Tuyauterie et raccords
  • Équipement et outillage (Alimentation en eau)
  • Traitement des eaux
CONT

L'eau brute entre sous pression à l'intérieur du module par l'intermédiaire d'un tube poreux distributeur de flux situé dans l'axe du module et qui dessert toute la longueur de celui-ci.

Spanish

Save record 5

Record 6 1981-01-26

English

Subject field(s)
  • Pipes and Fittings
  • Water Treatment (Water Supply)
OBS

The raw water under pressure enters the module through a porous flow-distributing pipe running through the centre of the module over its whole length.

French

Domaine(s)
  • Tuyauterie et raccords
  • Traitement des eaux
OBS

L'eau brute entre sous pression à l'intérieur du module par l'intermédiaire d'un tube poreux distributeur de flux situé dans l'axe du module et qui dessert toute la longueur de celui-ci.

Spanish

Save record 6

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