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MATURE SURFACE [9 records]

Record 1 2021-10-26

English

Subject field(s)
  • Animal Reproduction
  • Crustaceans
  • Aquaculture
DEF

The sexual union ... resulting in insemination or deposition of the male gametes in close proximity of the female gametes.

CONT

In astracids and parastracids the spermatophores are deposited either on the ventral surface of the female, or into the annulus ventralis which is known as a sperm storage chamber in cambarids... Cambarid [and astacid males and females] are cyclically dimorphic. The mating period is characterized by increased activity when sexually mature adult individuals actively seek their partners... Egg laying from the oviduct of the female is stimulated by the mating itself...

French

Domaine(s)
  • Reproduction des animaux
  • Crustacés
  • Aquaculture
CONT

Chez les mâles des Pénéidés, le spermatophore est [...] logé dans l'ampoule terminale. Celui-ci sera transféré à la femelle lors de la copulation. Chez les espèces [à thélycum fermé], les spermatophores sont insérés dans le thélycum, la partie contenant le sperme étant située en profondeur. [...] Par contre, chez les espèces [à thélycum ouvert], les spermatophores sont simplement déposés sur la face ventrale thoracique des femelles, la partie contenant le sperme se trouvant placée à l'orifice des oviductes.

Spanish

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Record 2 2012-10-24

English

Subject field(s)
  • Botany
  • Plant and Crop Production
DEF

The production of more than one shoot on a single plant.

CONT

Grains in the grass family, like wheat or oats, will produce side shoots at the surface of the ground. This "stooling" or "tillering" will produce more stalks and mature heads and greatly increase the total yield.

French

Domaine(s)
  • Botanique
  • Cultures (Agriculture)
DEF

Émission, chez les Poacées (Graminées), de talles issues de bourgeons axillaires.

CONT

La production de talles par une plante constitue le tallage.

OBS

talle : Tige adventive naissant à la base de la tige principale (maître-brin) de certaines plantes en touffes, notamment dans les familles des Poacées et Cypéracées.

Spanish

Campo(s) temático(s)
  • Botánica
  • Producción vegetal
Save record 2

Record 3 2012-08-01

English

Subject field(s)
  • Genetics
CONT

The clonal selection theory is based on the proposition that during development each lymphocyte becomes committed to react with a particular antigen before ever being exposed to it. A cell expresses this commitment in the form of surface receptor proteins that specifically fit the antigen. The binding of antigen to the receptors activates the cell, causing it both to multiply and mature. Thus a foreign antigen selectively stimulates those cells that bear complementary antigen-specific receptors and are thus already committed to respond to it. This is what makes immune responses antigen-specific. The term "clonal" in clonal selection derives from the postulate that the immune system is composed of millions of different families, or clones, of cells, each consisting of T or B lymphocytes descended from a common ancestor. Since each ancestral cell is already committed to make one particular antigen-specific receptor protein, all cells in a clone have the same antigen specificity.

French

Domaine(s)
  • Génétique
CONT

Selon la théorie de la sélection clonale, les lymphocytes [sont] groupés en clones, un clone étant un ensemble de cellules identiques, descendantes d'une même cellule initiale, et exprimant les mêmes potentialités génétiques. Ainsi, chaque clone de lymphocyte B comporte-t-il un ensemble de cellules identiques, chacune synthétisant une espèce d'immunoglobuline, et une seule. Ce clone est sélectivement stimulé par l'antigène reconnu spécifiquement par l'immunoglobuline qu'il exprime.

Spanish

Campo(s) temático(s)
  • Genética
DEF

Producción de una población de células plasmáticas productoras de un mismo anticuerpo en respuesta a la interacción entre un linfocito B que produce el anticuerpo específico y el antígeno fijado por dicho anticuerpo.

Save record 3

Record 4 2011-01-19

English

Subject field(s)
  • Erosion and Weathering (Geol.)
OBS

mature surface : term used at Natural Resources Canada-Earth Sciences Sector.

PHR

Mature surface of erosion.

PHR

Mature surface soil.

French

Domaine(s)
  • Érosion et corrosion (Géologie)
OBS

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

Spanish

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Record 5 2004-07-28

English

Subject field(s)
  • Atmospheric Physics
DEF

The middle and most intense phase in the life cycle of a thunderstorm cell; begins when precipitation reaches Earth’s surface and is characterized by both updrafts and downdrafts.

CONT

The life cycle of a thunderstorm cell can be divided into three stages which are determined by the magnitude and direction of the predominating vertical motions within the cell. These stages include(1) the cumulus stage,(2) the mature stage, and(3) the dissipation stage.... The mature stage is characterized by the existence of both updrafts and downdrafts in the lower half of the cell. The start of this stage is marked when the rain first falls distinctly out of the bottom of the cloud. It is during this stage that the most intense lightning occurs, the heaviest rains are recorded at the surface, and the strongest winds are observed. If present, hail will occur during this stage.

French

Domaine(s)
  • Physique de l'atmosphère
CONT

Le stade de maturité commence lorsque les précipitations commencent à tomber de la base du nuage. [...] Ce stade de maturité constitue la période d'orage; il dure de quinze à vingt minutes. On y observe des éclairs soit au sein même du nuage (horizontaux, dits «crawler») soit dirigés vers le sol (éclairs Cloud-Ground ou CG) accompagnés de tonnerre et d'averses (de pluie, de neige ou de grêle en fonction des circonstances). Les températures sont plus basses dans les courants descendants en comparaison avec l'air environnant et contrastent spécialement avec les températures dans les courants ascendants [...]

CONT

Un orage est composé de différentes cellules qui se trouvent à un stade de développement différent. Le cycle de vie d'une des cellules comporte trois stades : cumulus (ou naissance), adulte et dissipation. [...] Le stade adulte est [...] caractérisé par la présence simultanée de courants ascendants, de courants descendants et de pluie.

Spanish

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Record 6 2004-04-27

English

Subject field(s)
  • Petroleum Deposits
CONT

Oilfields, after a certain production period, are then called mature fields. Mature fields are those where the recovered oil fraction is close to the final recovery factor. Its mature phase is generally accompanied by an increasing production of water or gas, plus the aging of surface and subsurface equipment.

PHR

Mature gas field.

French

Domaine(s)
  • Gisements pétrolifères
CONT

Par le piégeage du CO², la société améliore le récupération du pétrole, ce qui prolonge la production et la durée de vie utile de ce champ parvenu à maturité.

PHR

Champ pétrolifère parvenu à maturité.

Spanish

Save record 6

Record 7 2003-11-13

English

Subject field(s)
  • Petroleum Deposits
OBS

Oilfields, after a certain production period, are then called mature fields. Mature fields are those where the recovered oil fraction is close to the final recovery factor. Its mature phase is generally accompanied by an increasing production of water or gas, plus the aging of surface and subsurface equipment. To revitalize mature fields, a series of technologies is developed to increase the final recovery factor through treatments on a field(the so-called tertiary petroleum recovery) or well(stimulation, recompletion, treatments and logging) scale, in addition to optimizing the techniques relating to oil lift, its surface flow and treatment.

OBS

Many mature gas fields also have a fairly significant production decline, especially when development drilling has come to an end. These mature fields can be revitalized in many ways. In some instances, efforts are focused on the reservoir with further drilling to drain potentially unswept hydrocarbons with infill wells or horizontal laterals. The horizontal drilling might be from new wellbores or wells that are currently temporarily abandoned or near their economic limit. With the increase in horizontal-well activity, there is an abundance of new technology with advances in gravel-pack design, underbalanced drilling with coiled tubing, and coiled-tubing fracturing. Besides these production improvements, operators are revamping both downhole and surface facilities to help breathe new life into older fields. Advances are taking place in the areas of artificial lift, intelligent-well completions, expandable tubulars, and others.

French

Domaine(s)
  • Gisements pétrolifères
OBS

Les gisements du Néocomien s'épuisent en moyenne de 6 % par an, il nous fallait arrêter ce déclin par une revitalisation des champs pétrolifères que nous exploitons actuellement.

Spanish

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Record 8 1996-05-17

English

Subject field(s)
  • Water Pollution
  • Water Treatment (Water Supply)
  • Wastewater Treatment
DEF

A mucilaginous layer containing bacteria, protozoa and fungi, which covers the wetted surfaces of the medium in a mature biological filter, a slow sand filter, or the internal surface of the pipes in a sewer.

OBS

zoogloeal film: term standardized by ISO.

French

Domaine(s)
  • Pollution de l'eau
  • Traitement des eaux
  • Traitement des eaux usées
DEF

Couche mucilagineuse, contenant des bactéries, des protozoaires, des champignons, qui couvre les surfaces imbibées d'un support dans un filtre biologique mature, dans un filtre de sable à filtration lente ou les parois internes des canalisations d'un égout.

OBS

film de zooglée : terme normalisé par l'ISO.

Spanish

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Record 9 1977-09-18

English

Subject field(s)
  • Paleontology
OBS

Chitinized stolon(...) embedded in [the] lower surface of [the] mature parts of [the] coenoecium(...) [of some Pterobranchs]

French

Domaine(s)
  • Paléontologie
OBS

[chez les Ptérobranches] Un stolon [noir] parcourt toute la coénécie et réunit tous les individus habitant chacun dans une loge, en véritable colonie.

OBS

Un stolon de 25 à 30 [mu] de diamètre parcourt l'intérieur de toute la coénécie (...); il s'entoure d'une gaine chitineuse, à parois très minces, fortement pigmentée ("stolon noir").

Spanish

Save record 9

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