TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
DECAY PERIOD [7 records]
Record 1 - internal organization data 2015-10-06
Record 1, English
Record 1, Subject field(s)
- Environmental Studies and Analyses
Record 1, Main entry term, English
- half-life period
1, record 1, English, half%2Dlife%20period
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The period of time after which the concentration or mass of a substance, undergoing degradation or decay, has fallen to half of its initial value. 1, record 1, English, - half%2Dlife%20period
Record number: 1, Textual support number: 1 OBS
half-life period: term and definition standardized by ISO. 2, record 1, English, - half%2Dlife%20period
Record 1, French
Record 1, Domaine(s)
- Études et analyses environnementales
Record 1, Main entry term, French
- période de demi-vie
1, record 1, French, p%C3%A9riode%20de%20demi%2Dvie
correct, feminine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Période de temps après laquelle la concentration ou la masse d'une substance, subissant une dégradation ou une désintégration, atteint la moitié de sa valeur initiale. 1, record 1, French, - p%C3%A9riode%20de%20demi%2Dvie
Record number: 1, Textual support number: 1 OBS
période de demi-vie : terme et définition normalisés par l'ISO. 2, record 1, French, - p%C3%A9riode%20de%20demi%2Dvie
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Estudios y análisis del medio ambiente
Record 1, Main entry term, Spanish
- período de vida media
1, record 1, Spanish, per%C3%ADodo%20de%20vida%20media
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Período de tiempo después del cual la concentración o masa de una sustancia sometida a degradación o desintegración ha descendido a la mitad de su valor inicial. 1, record 1, Spanish, - per%C3%ADodo%20de%20vida%20media
Record number: 1, Textual support number: 1 OBS
El término es aplicable solamente a las reacciones de orden cero o uno. 1, record 1, Spanish, - per%C3%ADodo%20de%20vida%20media
Record 2 - external organization data 2014-10-30
Record 2, English
Record 2, Subject field(s)
- Compartment - Canadian Nuclear Safety Commission
- Biochemistry
- Pharmacodynamics
- Environment
Record 2, Main entry term, English
- half-life
1, record 2, English, half%2Dlife
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- biological half-life 2, record 2, English, biological%20half%2Dlife
correct
- biological halflife 3, record 2, English, biological%20halflife
- half-time 4, record 2, English, half%2Dtime
- biological half-time 5, record 2, English, biological%20half%2Dtime
- elimination half-life 6, record 2, English, elimination%20half%2Dlife
- half-time for elimination 7, record 2, English, half%2Dtime%20for%20elimination
- time of half-elimination 7, record 2, English, time%20of%20half%2Delimination
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The period of time for a chemical substance to lose half its concentration or activity due to metabolic uptake, decay or other chemical change. 8, record 2, English, - half%2Dlife
Record number: 2, Textual support number: 1 CONT
Industrial applications require generally robust enzymes with a long half-life under process conditions. 9, record 2, English, - half%2Dlife
Record number: 2, Textual support number: 2 CONT
... the half-time of PCBs [polychlorinated biphenyl] in soil has been estimated at 5 years. 4, record 2, English, - half%2Dlife
Record number: 2, Textual support number: 1 OBS
In the pollution field, means the time necessary for half the amount of pollutants to lose their polluting effect on the environment. 8, record 2, English, - half%2Dlife
Record 2, French
Record 2, Domaine(s)
- Tiroir - Commission canadienne de sûreté nucléaire
- Biochimie
- Pharmacodynamie
- Environnement
Record 2, Main entry term, French
- demi-vie
1, record 2, French, demi%2Dvie
correct, feminine noun
Record 2, Abbreviations, French
- d.-v 2, record 2, French, d%2E%2Dv
feminine noun
Record 2, Synonyms, French
- demi-vie biologique 3, record 2, French, demi%2Dvie%20biologique
correct, feminine noun
- période biologique 4, record 2, French, p%C3%A9riode%20biologique
feminine noun
- T biol 5, record 2, French, T%20biol
feminine noun
- T biol 5, record 2, French, T%20biol
- demi-période biologique 6, record 2, French, demi%2Dp%C3%A9riode%20biologique
feminine noun
- demi-vie d'élimination 7, record 2, French, demi%2Dvie%20d%27%C3%A9limination
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Durée nécessaire à la disparition de la moitié d'une substance soumise [à un] processus de biodégradation. 3, record 2, French, - demi%2Dvie
Record number: 2, Textual support number: 1 CONT
La demi-vie des molécules d'insuline dans le sang n'est que d'environ trois à quatre minutes; la libération d'insuline à partir du pancréas est ainsi tout à fait responsable des fluctuations des concentrations du glucose sanguin. 8, record 2, French, - demi%2Dvie
Record number: 2, Textual support number: 2 CONT
Certains congénères [de BPC (biphényle polychloré)] à teneur en chlore élevée persistent longtemps dans l'environnement (demi-vie de plus de 2 ans) [...] 9, record 2, French, - demi%2Dvie
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2011-11-15
Record 3, English
Record 3, Subject field(s)
- Nuclear Waste Materials
- Chemistry
- Atomic Physics
Record 3, Main entry term, English
- residual activity
1, record 3, English, residual%20activity
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- residual radioactivity 2, record 3, English, residual%20radioactivity
correct
- lingering radioactivity 3, record 3, English, lingering%20radioactivity
- residual radiations radioactivity 4, record 3, English, residual%20radiations%20radioactivity
avoid
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Radioactivity remaining in a substance or system at a specified time after a period of decay. 2, record 3, English, - residual%20activity
Record number: 3, Textual support number: 1 CONT
After ... temporary storage, the activity of the waste may have declined so much that the material can be regarded safely as non-radioactive, or the residual activity may allow the waste to be consigned to the appropriate category in the proposed classification. 5, record 3, English, - residual%20activity
Record 3, French
Record 3, Domaine(s)
- Déchets nucléaires
- Chimie
- Physique atomique
Record 3, Main entry term, French
- activité résiduelle
1, record 3, French, activit%C3%A9%20r%C3%A9siduelle
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- activité rémanente 2, record 3, French, activit%C3%A9%20r%C3%A9manente
correct, feminine noun
- radioactivité résiduelle 3, record 3, French, radioactivit%C3%A9%20r%C3%A9siduelle
correct, feminine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Les radionucléides décroissent exponentiellement dans le temps. Au bout de 10 périodes, l'activité résiduelle est inférieure au millième de l'activité initiale. Au bout de 20 périodes elle est inférieure au millionième. 4, record 3, French, - activit%C3%A9%20r%C3%A9siduelle
Record number: 3, Textual support number: 2 CONT
Après l'arrêt définitif de l'installation, l'activité rémanente présente dans un réacteur est essentiellement due aux produits d'activation et de corrosion et, dans une moindre mesure, à certains produits de fission [...] 4, record 3, French, - activit%C3%A9%20r%C3%A9siduelle
Record number: 3, Textual support number: 3 CONT
Le conditionnement solide doit pouvoir présenter certaines caractéristiques pour que le stockage de longue durée sans contrôle soit acceptable : une bonne résistance : - à la corrosion et à l'attaque par l'eau [...] - à l'activité résiduelle, c'est-à-dire à l'action des rayonnements eux-mêmes et à la chaleur dégagée. 4, record 3, French, - activit%C3%A9%20r%C3%A9siduelle
Record number: 3, Textual support number: 4 CONT
Un réacteur REP [réacteur à eau pressurisée] peut être schématisé [...] pour mettre en évidence le circuit primaire, et le béton de protection autour de la cuve, sièges tous deux de l'activité rémanente, ainsi que le circuit secondaire, pratiquement exempt d'activité. 4, record 3, French, - activit%C3%A9%20r%C3%A9siduelle
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Desechos nucleares
- Química
- Física atómica
Record 3, Main entry term, Spanish
- actividad residual
1, record 3, Spanish, actividad%20residual
correct, feminine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
- radiactividad residual 2, record 3, Spanish, radiactividad%20residual
correct, feminine noun
- actividad remanente 3, record 3, Spanish, actividad%20remanente
feminine noun
Record 3, Textual support, Spanish
Record 3, Key term(s)
- radiactividad remanente
- radioactividad remanente
- radioactividad residual
Record 4 - external organization data 2011-10-18
Record 4, English
Record 4, Subject field(s)
- Waste Management
- Nuclear Waste Materials
- Radioactive Contamination
- Compartment - Canadian Nuclear Safety Commission
Record 4, Main entry term, English
- disposal
1, record 4, English, disposal
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- radioactive waste disposal 2, record 4, English, radioactive%20waste%20disposal
correct
- permanent disposal 3, record 4, English, permanent%20disposal
correct
- ultimate disposal 3, record 4, English, ultimate%20disposal
correct
- final disposal 4, record 4, English, final%20disposal
correct
- final storage 5, record 4, English, final%20storage
correct
- permanent storage 6, record 4, English, permanent%20storage
correct
- disposition of wastes 3, record 4, English, disposition%20of%20wastes
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
Planned permanent placement of radioactive material with no intention of recovery. 7, record 4, English, - disposal
Record number: 4, Textual support number: 1 CONT
Disposal is a permanent method of management in which there is no intention of retrieval and which, ideally, does not rely for its success on the continued need for institutional controls beyond a reasonable period of time. Disposal would be achieved when the wastes are sufficiently isolated by natural or engineered passive containment, or sufficiently reduced in concentration by radioactive decay or dispersal, that the residual risks to human beings and the environment are acceptable. 3, record 4, English, - disposal
Record number: 4, Textual support number: 2 CONT
Permanent disposal means sequestering the wastes, until they have decayed to a safe level, away from the environment in a permanent facility requiring no monitoring, maintenance, or ongoing institutional controls. ... One unfortunate aspect of the Board’s adherence to this idea is the inhibiting effect it has on the search for simpler solutions, such as long-term storage, that concentrate on improved management of the wastes. 3, record 4, English, - disposal
Record number: 4, Textual support number: 1 OBS
The debate essentially concerns the distinction between storage and disposal. "Storage" involves the retrievability, monitoring, and ongoing institutional control of wastes. It also includes active elements of waste management in such a waste facility (e.g., leachate collection and treatment). By contrast, the concept of disposal assumes that a waste management facility can be designed in such a way that there will be no need for such measures. 3, record 4, English, - disposal
Record 4, French
Record 4, Domaine(s)
- Gestion des déchets
- Déchets nucléaires
- Pollution par radioactivité
- Tiroir - Commission canadienne de sûreté nucléaire
Record 4, Main entry term, French
- évacuation
1, record 4, French, %C3%A9vacuation
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- évacuation des déchets radioactifs 2, record 4, French, %C3%A9vacuation%20des%20d%C3%A9chets%20radioactifs
correct, feminine noun, standardized
- évacuation de déchets radioactifs 3, record 4, French, %C3%A9vacuation%20de%20d%C3%A9chets%20radioactifs
correct, feminine noun
- stockage définitif 4, record 4, French, stockage%20d%C3%A9finitif
correct, masculine noun
- stockage permanent 5, record 4, French, stockage%20permanent
correct, masculine noun
- évacuation définitive 6, record 4, French, %C3%A9vacuation%20d%C3%A9finitive
correct, feminine noun
- évacuation finale 7, record 4, French, %C3%A9vacuation%20finale
correct, feminine noun
- évacuation permanente 8, record 4, French, %C3%A9vacuation%20permanente
correct, feminine noun
- élimination 9, record 4, French, %C3%A9limination
correct, feminine noun
- élimination de déchets radioactifs 10, record 4, French, %C3%A9limination%20de%20d%C3%A9chets%20radioactifs
correct, feminine noun
- stockage final 11, record 4, French, stockage%20final
correct, masculine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Préparation des déchets radioactifs en vue de leur évacuation pour une durée illimitée et mise en place de ces produits dans le site définitif. [Définition normalisée par l'ISO.] 12, record 4, French, - %C3%A9vacuation
Record number: 4, Textual support number: 1 CONT
[...] un stockage final sûr doit garantir qu'aucun retour de radioactivité vers la biosphère ne pourra se produire en quantité telle qu'elle pourrait entraîner des irradiations excédant les doses admissibles [...] 13, record 4, French, - %C3%A9vacuation
Record number: 4, Textual support number: 2 CONT
Depuis une dizaine d'années environ, les questions relatives aux techniques de stockage définitif (ou évacuation) des déchets et à leur sûreté [...] ont pris une place prépondérante [...] 9, record 4, French, - %C3%A9vacuation
Record number: 4, Textual support number: 1 OBS
évacuation des déchets radioactifs : Ce terme s'applique ordinairement à l'évacuation des déchets d'activité élevée. 12, record 4, French, - %C3%A9vacuation
Record number: 4, Textual support number: 2 OBS
évacuation des déchets radioactifs : terme normalisé par l'AFNOR et l'ISO. 14, record 4, French, - %C3%A9vacuation
Record number: 4, Textual support number: 3 OBS
évacuation permanente; stockage permanent : termes retenus par la Commission canadienne de sûreté nucléaire. 14, record 4, French, - %C3%A9vacuation
Record number: 4, Textual support number: 4 OBS
élimination de déchets radioactifs; radioactive waste disposal : termes extraits du Glossaire de l'énergie nucléaire (1983) et reproduits avec l'autorisation de l'OCDE. 14, record 4, French, - %C3%A9vacuation
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Gestión de los desechos
- Desechos nucleares
- Contaminación por radioactividad
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
Record 4, Main entry term, Spanish
- almacenamiento definitivo
1, record 4, Spanish, almacenamiento%20definitivo
correct, masculine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
- almacenamiento final 1, record 4, Spanish, almacenamiento%20final
correct, masculine noun
- almacenamiento permanente 1, record 4, Spanish, almacenamiento%20permanente
correct, masculine noun
- disposición final 1, record 4, Spanish, disposici%C3%B3n%20final
correct, feminine noun
- disposición permanente 2, record 4, Spanish, disposici%C3%B3n%20permanente
feminine noun
- eliminación 3, record 4, Spanish, eliminaci%C3%B3n
correct, feminine noun
- eliminación definitiva 3, record 4, Spanish, eliminaci%C3%B3n%20definitiva
correct, feminine noun
- evacuación 4, record 4, Spanish, evacuaci%C3%B3n
correct, feminine noun
- evacuación definitiva 5, record 4, Spanish, evacuaci%C3%B3n%20definitiva
correct, feminine noun
- evacuación permanente 2, record 4, Spanish, evacuaci%C3%B3n%20permanente
correct, feminine noun
Record 4, Textual support, Spanish
Record 5 - internal organization data 2009-10-07
Record 5, English
Record 5, Subject field(s)
- Waste Management
- Nuclear Waste Materials
Record 5, Main entry term, English
- durable container
1, record 5, English, durable%20container
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
The waste package is required to prevent transfer of radionuclides beyond the boundary of the waste package, during this decay period. lt should be noted that a container that is more durable than that required for the containment period could be used in satisfying another requirement related to the rate of release of radionuclides; controlled release subsequent to the containment period is specified. Thus, a more durable container could assist in controlling any calculated release of radionuclides. 1, record 5, English, - durable%20container
Record 5, French
Record 5, Domaine(s)
- Gestion des déchets
- Déchets nucléaires
Record 5, Main entry term, French
- conteneur durable
1, record 5, French, conteneur%20durable
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
La figure 3 rappelle les bases de conception d'ouvrages de stockage typiques du CSA [...] - des alvéoles en béton accueillant les colis de déchets et un matériau de remplissage des vides : gravier pour les colis à conteneur durable (conteneur en béton), mortier pour les colis à conteneur périssable (fût métallique) [...] 1, record 5, French, - conteneur%20durable
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1999-04-26
Record 6, English
Record 6, Subject field(s)
- Ecology (General)
Record 6, Main entry term, English
- pristine area
1, record 6, English, pristine%20area
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Respecting the carrying capacity of ecosystems also entails acknowledging that there are limits to growth, and respecting the inherent worth of nature, and thus does not justify increased pollution in pristine areas, or give a licence to pollute less polluted areas. 2, record 6, English, - pristine%20area
Record number: 6, Textual support number: 1 OBS
pristine : 1. belonging to the earliest period or state, original, primitive(pristine form of air conditioning)... 2 a) uncorrupted by civilization or the world(pristine freshness) b) free from drabness, soil or decay, fresh and clean(a pristine and fabulously wealthy residential area... 3, record 6, English, - pristine%20area
Record 6, French
Record 6, Domaine(s)
- Écologie (Généralités)
Record 6, Main entry term, French
- zone vierge
1, record 6, French, zone%20vierge
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Il y a partout une différence entre la zone habitée (le village), la zone transformée par les activités agricoles (champs et jachères) et la zone «vierge», la forêt proprement dite [...] 2, record 6, French, - zone%20vierge
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Ecología (Generalidades)
Record 6, Main entry term, Spanish
- zona virgen
1, record 6, Spanish, zona%20virgen
feminine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1998-07-06
Record 7, English
Record 7, Subject field(s)
- Psychometry and Psychotechnology
Record 7, Main entry term, English
- long-term-memory test
1, record 7, English, long%2Dterm%2Dmemory%20test
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 OBS
long term memory(LTM) : The ability to respond to a stimulus, recite a list, remember an association, and so on, after a long period of time since the material was presented. Its slow rate of decay and great amount of remembered material distinguish it from short term memory. 2, record 7, English, - long%2Dterm%2Dmemory%20test
Record 7, French
Record 7, Domaine(s)
- Psychométrie et psychotechnique
Record 7, Main entry term, French
- test de mémoire à long terme
1, record 7, French, test%20de%20m%C3%A9moire%20%C3%A0%20long%20terme
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record 7, Spanish
Record 7, Textual support, Spanish
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