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CROSS REACTION [13 records]

Record 1 2023-03-30

English

Subject field(s)
  • Immunology
DEF

[The] reaction of one antigen with antibodies developed against another antigen.

OBS

cross reaction : This term appears under "reaction" in the Dorland's illustrated medical dictionary and the International dictionary of medicine and biology.

French

Domaine(s)
  • Immunologie
DEF

Réaction d'un anticorps avec un antigène différent de celui ayant induit sa formation [...]

CONT

[...] on parle de réaction croisée lorsqu'un anticorps dirigé contre un antigène donné réagit également avec un antigène de structure voisine.

CONT

À cause des problèmes de réactions croisées qui rendent l'interprétation des résultats des tests sérologiques difficile, la sérologie ne devrait pas être utilisée comme test de détection en l'absence d'une culture ou d'un TAAN [test d'amplification des acides nucléiques].

Spanish

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

Record 2 2023-03-30

English

Subject field(s)
  • Immunology
DEF

The ability of an antibody to react with or bind an antigen that did not stimulate its production.

CONT

Due to issues of cross-reactivity and difficulty with interpretation of test results, serology should not be used for diagnostic purposes in the absence of culture or NAAT [nucleic acid amplification test].

OBS

In general, the greater the similarity between the different antigens, the stronger the cross reactivity will be.

OBS

cross reactivity : This term appears under "cross reaction, "in the entry for "reaction" in the International dictionary of medicine and biology.

Key term(s)
  • antibody cross-reactivity

French

Domaine(s)
  • Immunologie
DEF

Capacité d'un anticorps à réagir avec un antigène autre que celui qui a provoqué sa formation.

CONT

Les venins d'abeille et des vespidés (guêpe et frelon) n'ont pas de réactivité croisée ou une réactivité croisée très faible. Par contre, il existe une réactivité croisée importante entre les venins de vespidés.

Spanish

Campo(s) temático(s)
  • Inmunología
Save record 2

Record 3 2016-11-30

English

Subject field(s)
  • Atomic Physics
CONT

The alpha-neutron reaction, which occurs when alpha particles emitted from plutonium-238 interact with atoms of naturally occurring oxygen, results in a high neutron emission rate from plutonium oxide, and may cause a high neutron exposure to workers. To reduce this exposure, an oxygen exchange process would be used to replace the higher cross-section oxygen isotopes(oxygen-17 and oxygen-18) with oxygen-16, which has a very small cross section for the alpha-neutron reaction.

OBS

alpha-neutron reaction: term extracted from the “Glossaire de l’énergie nucléaire” and reproduced with permission of the Organisation for Economic Co-operation and Development.

French

Domaine(s)
  • Physique atomique
CONT

Le plutonium selon sa forme physico-chimique, est aussi un émetteur de neutrons (fissions spontanées, réactions alpha-neutron) [...]

OBS

réaction alpha-neutron : terme extrait du «Glossaire de l’énergie nucléaire» et reproduit avec l’autorisation de l’Organisation de coopération et de développement économiques.

Spanish

Save record 3

Record 4 2014-04-10

English

Subject field(s)
  • Plastics Manufacturing
DEF

A plastic that has thermosetting properties.

CONT

As the name implies, thermosetting plastics or thermosets are cured, set, or hardened into a permanent shape. This curing is an irreversible chemical reaction known as cross linking, which usually occurs under heat.

OBS

thermosetting plastic: term and definition standardized by ISO [International Organization for Standardization].

French

Domaine(s)
  • Plasturgie
DEF

Plastique présentant le caractère thermodurcissable.

OBS

plastique thermodurcissable : terme et définition normalisés par l'ISO [Organisation internationale de normalisation].

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
DEF

Plástico que tiene propiedades de termoendurecibles.

Save record 4

Record 5 2011-09-26

English

Subject field(s)
  • Nuclear Physics
CONT

Spatial homogenization can be performed using [a] criterion of reaction rate conservation, using the spatial neutron flux distribution for weighting … a simple flux and volume weighting procedure is valid when there is no leakage from the region, which is homogenized. In general, averaged cross sections homogenized by the simple flux and volume weighting satisfy the condition of average reaction rate conservation, but do not reproduce the partial neutron currents on the region boundaries.

French

Domaine(s)
  • Physique nucléaire
CONT

Pondération par les flux et les volumes. En ce qui concerne l’homogénéisation, on est amené à pondérer les flux par les volumes pour respecter les flux moyens, et à pondérer les sections efficaces par les produits des flux par les volumes pour respecter les taux de réaction. En ce qui concerne la condensation, les règles sont les mêmes en remplaçant «volumes» par «intervalles de léthargie».

Spanish

Save record 5

Record 6 2009-11-10

English

Subject field(s)
  • Nuclear Physics
DEF

A method of observing excited states of nuclei in which neutrons are used to bombard a target, causing nuclei to be transmuted into excited states by various nuclear reactions; the resultant excited states are determined by observing resonances in the reaction cross sections or by observing spectra of emitted particles or gamma rays.

French

Domaine(s)
  • Physique nucléaire

Spanish

Save record 6

Record 7 2009-10-26

English

Subject field(s)
  • Atomic Physics
CONT

For each reaction, we constructed a continuous energy representation of the cross section from the evaluation tables; formed a flux-weighted average cross section for each particle flux at each location...

Key term(s)
  • flux weighted average cross section

French

Domaine(s)
  • Physique atomique

Spanish

Save record 7

Record 8 2009-09-14

English

Subject field(s)
  • Analytical Chemistry
  • Atomic Physics
DEF

A method of observing excited states of nuclei in which neutrons are used to bombard a target, causing nuclei to be transmuted into excited states by various nuclear reactions ...

OBS

... the resultant excited states are determined by observing resonances in the reaction cross sections or by observing spectra of emitted particles or gamma rays.

French

Domaine(s)
  • Chimie analytique
  • Physique atomique
CONT

La réalisation de faisceaux intenses de neutrons parallèles permet [...] l'étude de la structure cristalline par diffraction des neutrons dans les milieux solides ou liquides (spectrométrie à neutrons) [...]

Spanish

Save record 8

Record 9 2006-08-11

English

Subject field(s)
  • Immunology
CONT

Reaction of identity. A qualitative demonstration that two reactants have identical immunologic specificity. Symmetrical precipitin lines form and meet precisely at a point when the materials are placed equidistant from one another and from a single, specific antibody in a double immuno-diffusion plate.... In a reaction of nonidentity, the precipitin lines are asymmetrical in location and intensity, and cross one another at an unpredictable intersection.

Key term(s)
  • reaction of non-identity

French

Domaine(s)
  • Immunologie
CONT

Immunodiffusion sur plaques (Ouchterlony). - [...] Si, au contraire (de la réaction d'identité), deux solutions antigéniques différentes sont disposées dans deux puits adjacents, les traits de précipitation vont se couper. C'est la réaction de non-identité.

Spanish

Campo(s) temático(s)
  • Inmunología
Save record 9

Record 10 2002-03-05

English

Subject field(s)
  • Orbital Stations
CONT

The Space Shuttle stops within 50 meters of Mir, which is approximately one-half the length of a football field. From that position the Space Shuttle waits for clearance from Mission Control to continue. When the command is given to continue, the Reaction Control System is activated again and the Space Shuttle closes in on Mir at a speed of about 0. 05 meters per second until it reaches a distance of about 9 meters. There, the Space Shuttle stops again and waits for approximately 5 minutes. The Commander and Pilot make sure they can see the docking target clearly and fine-tune the alignment of the Space Shuttle with the docking target. A large black cross called the Stand-off Cross is mounted 30 centimeters(cm) above the back plate in the center of the target. When the Commander has the Stand-off Cross squarely in line with the docking target, he or she maneuvers the Space Shuttle and makes contact with the docking ring. Once a series of hooks is engaged, the Space Shuttle is then successfully docked with Mir.

OBS

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

French

Domaine(s)
  • Stations orbitales
OBS

Voici le module d'habitation Zvezda [...] Le «bras» que l'on voit en bas à gauche porte une cible [d'amarrage] dont se servent justement les Progress et les Soyouz pour se guider.

OBS

cible d'amarrage : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Save record 10

Record 11 1992-12-03

English

Subject field(s)
  • Atomic Physics
DEF

A formula describing the cross section for a nuclear reaction in the vicinity of one or more resonance levels.

OBS

Term standardized by ISO.

French

Domaine(s)
  • Physique atomique
DEF

Formule donnant la section efficace pour une réaction nucléaire au voisinage d'un ou de plusieurs niveaux de résonance.

OBS

Terme normalisé par l'ISO.

Spanish

Save record 11

Record 12 1980-11-21

English

Subject field(s)
  • Atomic Physics
OBS

The resonance integral in which the cross section is replaced by an effective cross section and which gives the true reaction rate when the flux density does not vary inversely as the neutron energy.

French

Domaine(s)
  • Physique atomique
OBS

Intégrale de résonance dans laquelle la section efficace est remplacée par une section efficace effective, et qui donne le vrai taux de réaction lorsque la densité de flux neutronique varie autrement que selon la loi de l'inverse de l'énergie des neutrons.

Spanish

Save record 12

Record 13 1980-11-20

English

Subject field(s)
  • Atomic Physics
OBS

A fictitious cross section for a specified interaction which, when multiplied by the conventional flux density, gives the correct reaction rate. Also called cross section. West-cott. NOTE-The use of the term is usually restricted to capture and fission in well-moderated systems.

French

Domaine(s)
  • Physique atomique
OBS

Section efficace fictive relative à une interaction déterminée qui, multipliée par la densité de flux conventionnelle, donne le taux de réaction exact. Autre appellation: section efficace de Westcott. NOTE - L'usage de ce terme est habituellement réservé à la capture et à la fission dans les systèmes bien modérés.

Spanish

Save record 13

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