TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
TOTAL ACTIVITY RADIOACTIVE MATERIAL [3 records]
Record 1 - internal organization data 2000-08-08
Record 1, English
Record 1, Subject field(s)
- Atomic Physics
- Scientific Measurements and Analyses
- Nuclear Waste Materials
Record 1, Main entry term, English
- specific activity
1, record 1, English, specific%20activity
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- specific radioactivity 2, record 1, English, specific%20radioactivity
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The activity per unit weight of material, for example, becquerels per gram. 3, record 1, English, - specific%20activity
Record number: 1, Textual support number: 1 CONT
Levels of activity and specific activity are measured with regard to the total weight of radioactive and non-radioactive material in the sample. 4, record 1, English, - specific%20activity
Record number: 1, Textual support number: 2 CONT
Uranium has a very low specific activity because there are very few disintegrations for a given weight. Iridium pellets in a radiographic source have a much higher specific activity. 3, record 1, English, - specific%20activity
Record number: 1, Textual support number: 1 OBS
Specific activity can be expressed in such units as millicuries per gram, disintegrations per second per milligram, or counts per minute per milligram. 5, record 1, English, - specific%20activity
Record 1, French
Record 1, Domaine(s)
- Physique atomique
- Mesures et analyse (Sciences)
- Déchets nucléaires
Record 1, Main entry term, French
- activité massique
1, record 1, French, activit%C3%A9%20massique
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- activité spécifique 2, record 1, French, activit%C3%A9%20sp%C3%A9cifique
avoid, see observation, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Activité par unité de poids de la matière, par exemple en becquerels par gramme. 3, record 1, French, - activit%C3%A9%20massique
Record number: 1, Textual support number: 1 CONT
L'activité spécifique est inversement proportionnelle à la période et au nombre de masse du radionucléide. Le nombre de masse ne variant que d'un facteur de quelques unités dans la gamme qui nous intéresse, alors que les périodes varient d'une fraction de seconde à des milliards d'années, on peut considérer en ordre de grandeur que l'activité spécifique est inversement proportionnelle à la seule période, sauf pour quelques radionucléides très légers tels que le tritium. 4, record 1, French, - activit%C3%A9%20massique
Record number: 1, Textual support number: 2 CONT
L'activité massique de l'uranium est très faible, car un nombre très réduit de désintégrations se produit pour un poids donné. Les pastilles d'iridium d'une source gammagraphique ont une activité massique beaucoup plus élevée. 3, record 1, French, - activit%C3%A9%20massique
Record number: 1, Textual support number: 1 OBS
Il semble que le terme «activité spécifique» ait fait l'objet de critiques de la part de certains auteurs et que les organismes de normalisation comme l'ISO et la CEI (Commission électrotechnique internationale) aient tenté d'imposer l'emploi de «activité massique». Toutefois, le terme «activité spécifique» paraît vouloir s'ancrer malgré tout dans l'usage. On le retrouve dans le Règlement sur le transport des marchandises dangereuses. 5, record 1, French, - activit%C3%A9%20massique
Record number: 1, Textual support number: 2 OBS
activité (radioactive) : Nombre de désintégrations nucléaires qui se produisent par unité de temps dans une quantité donnée d'un élément radioactif déterminé [...]. Unités : le curie (Ci) [...]. le becquerel (Bq) [...]. On utilise aussi le rutherford [...] 6, record 1, French, - activit%C3%A9%20massique
Record 1, Key term(s)
- activité nucléaire massique
- activité radioactive massique
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Física atómica
- Medición y análisis (Ciencias)
- Desechos nucleares
Record 1, Main entry term, Spanish
- actividad específica
1, record 1, Spanish, actividad%20espec%C3%ADfica
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- actividad nuclear específica 1, record 1, Spanish, actividad%20nuclear%20espec%C3%ADfica
feminine noun
- actividad radiactiva específica 1, record 1, Spanish, actividad%20radiactiva%20espec%C3%ADfica
feminine noun
Record 1, Textual support, Spanish
Record 1, Key term(s)
- actividad radioactiva específica
Record 2 - internal organization data 1996-05-31
Record 2, English
Record 2, Subject field(s)
- Nuclear Physics
- Chemistry
- Nuclear Waste Materials
Record 2, Main entry term, English
- total activity
1, record 2, English, total%20activity
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Table 3 shows the relative proportions of the different classes of low-level radioactive wastes .... It is noteworthy that mine and mill tailings dominate in both volume and specific activity. Figure 6 shows the "other" category of Figure 5 again, this time by volume and total activity. 1, record 2, English, - total%20activity
Record number: 2, Textual support number: 1 OBS
For a material containing a specified radionuclide, the ratio of the activity of that radionuclide and its short-lived daughter products to the total activity of the material is called the "radioactive purity". 2, record 2, English, - total%20activity
Record 2, Key term(s)
- total nuclear activity
Record 2, French
Record 2, Domaine(s)
- Physique nucléaire
- Chimie
- Déchets nucléaires
Record 2, Main entry term, French
- activité totale
1, record 2, French, activit%C3%A9%20totale
feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Key term(s)
- activité nucléaire totale
- activité radioactive totale
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Física nuclear
- Química
- Desechos nucleares
Record 2, Main entry term, Spanish
- actividad total
1, record 2, Spanish, actividad%20total
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record 3 - external organization data 1994-09-29
Record 3, English
Record 3, Subject field(s)
- Atomic Physics
- Compartment - Canadian Nuclear Safety Commission
Record 3, Main entry term, English
- total activity of a radioactive material
1, record 3, English, total%20activity%20of%20a%20radioactive%20material
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, French
Record 3, Domaine(s)
- Physique atomique
- Tiroir - Commission canadienne de sûreté nucléaire
Record 3, Main entry term, French
- activité totale d'une matière radioactive
1, record 3, French, activit%C3%A9%20totale%20d%27une%20mati%C3%A8re%20radioactive
feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record 3, Spanish
Record 3, Textual support, Spanish
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