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AIR DOSE [20 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2014-09-23

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Radioactive Contamination
  • Radiation Protection
DEF

An activity concentration for a given radionuclide in air or water which, for an exclusive and continuous inhalation or ingestion, would produce the maximum permissible dose equivalent in the critical organ when equilibrium is reached...

OBS

maximum permissible concentration; MPC: term and abbreviation standardized by ISO in 1997.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Pollution par radioactivité
  • Radioprotection
DEF

Pour un radionucléide donné, activité volumique dans l'air ou l'eau qui, pour une inhalation ou une ingestion exclusive et continue, entraînerait l'équivalent de dose maximal admissible lorsque l'équilibre biologique est atteint [...]

OBS

concentration maximale admissible; CMA : terme et abréviation normalisés par l'ISO en 1997.

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Contaminación por radioactividad
  • Protección contra la radiación
DEF

Concentración máxima que puede alcanzar un contaminante sin que cause daños.

Save record 1

Record 2 2014-04-15

English

Subject field(s)
  • Nuclear Waste Materials
  • Radiation Protection
  • Toxicology
  • Environmental Law
CONT

Although there are no scientifically proven minimum safe limits for concentrations of certain toxic and carcinogenic chemicals in food, air and water, such "safe limits" in fact have been set by the appropriate food and drug administrations or their equivalents. The implication is that a dose of low-level radiation with no acceptable safe level is more health-threatening than a low-level dose of, for example, dioxin. In fact, the Task Force finds it is more reasonable to accept a maximum permissible level for ionizing radiation because background radiation is a ubiquitous, naturally occurring phenomenon, whereas there is no naturally occurring level of polychlorinated biphenyls.

PHR

minimum safe limit

French

Domaine(s)
  • Déchets nucléaires
  • Radioprotection
  • Toxicologie
  • Droit environnemental

Spanish

Campo(s) temático(s)
  • Desechos nucleares
  • Protección contra la radiación
  • Toxicología
  • Derecho ambiental
Save record 2

Record 3 2013-06-13

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Toxicology
DEF

A measure of exposure to a vapor or aerosol.

CONT

The concentration in the air and the time of exposure govern the dose received, as dose rate of respiration. It is assumed that, when the product of concentration and time is constant, so is the biological effect over a limited range of concentration and time.... Concentration is expressed as milligram per cubic meter(mg/m3) and time as minutes, so that the concentration time(Ct) is expressed as milligram-minutes per cubic meter(mg-min/m3).

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Toxicologie

Spanish

Save record 3

Record 4 2012-12-17

English

Subject field(s)
  • Protection of Life
  • Radiation Protection
DEF

A command-directed maximum radiation dose that an individual may accumulate over a specific period.

OBS

operational exposure guidance; control dose : terms and definition officially approved by the Air Force Terminology Panel(Trenton).

French

Domaine(s)
  • Sécurité des personnes
  • Radioprotection
DEF

Dose d'irradiation maximale imposée par la chaîne de commandement qu'une personne peut accumuler au cours d'une période donnée.

OBS

consigne relative à l'irradiation opérationnelle; dose témoin : termes et définition uniformisés par le Groupe d'experts en terminologie de la Force aérienne (Trenton).

Spanish

Save record 4

Record 5 - external organization data 2011-05-16

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Radiological Physics (Theory and Application)
  • Compartment - Canadian Nuclear Safety Commission
DEF

The concentration of a radioactive pollutant in air that generates a maximum permissible dose to individuals.

CONT

The permissible limit for inhalation of a radionuclide is the appropriate ALI [annual limit of intake]. This is given in units of activity, Bq. Because it is often easier to measure and control the concentration of radioactvity in the air than to measure or control the intake, the ALIs are used to calculate the Derived Air Concentrations (DACs). The Derived Air Concentration, or DAC for any radionuclide, is that concentration in air, expressed in Bq/m³ which, if worked in for a year (50 weeks of 40 hours each for a total of 2000 hours per year), would result in the ALI for inhalation. The normal breathing rate, based on Reference Man, is 2,400 m³ per year at work. The Derived Air Concentration is the ALI divided by the volume breathed in a year at work.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Physique radiologique et applications
  • Tiroir - Commission canadienne de sûreté nucléaire

Spanish

Save record 5

Record 6 2011-02-14

English

Subject field(s)
  • Pools
CONT

Club Piscine Super Fitness offers you the liquid pool liner with tropical fish. This technology allows you to reduce energy while keeping the heat in your pool water.

CONT

Heatsavr-liquid pool cover.... Heatsavr is a bio-degradable liquid, which forms a transparent monomolecular layer over the surface of a swimming pool whenever it is calm. This layer significantly reduces evaporation, which not only saves on water heating but with indoor pools can reduce the cost of humidity control and air heating requirements. An automatic dosing system ensures that the correct dose of Heatsavr is added to the pool at the same time each day.

CONT

All liquids in liquid pool blankets basically work the same. 1. They must be lighter than water and float on the surface to be able to prevent heat loss and water evaporation from the water surface. 2. They must be quickly biodegradable, so as to be "pool friendly" and not leave scum lines on the pool walls and not plug the filtration system.

French

Domaine(s)
  • Piscines
CONT

Club Piscine Super Fitness vous offre des toiles solaires liquides avec forme de poisson tropical. Cette technologie vous permet de réduire l'énergie tout en conservant la chaleur de votre eau de piscine.

CONT

Un poisson tropical (pochette biodégradable en forme de poisson) crée une toile solaire liquide qui fait exactement le même travail qu’une vraie toile solaire, pour environ 60 % de l’efficacité, mais la manipulation de la toile en moins! Idéal pour les jours de canicule où les baignades sont fréquentes et où l’eau perd peu de chaleur!

Spanish

Save record 6

Record 7 2008-12-19

English

Subject field(s)
  • Radiological Physics (Theory and Application)
DEF

The total absorbed dose at a point in free air, resulting from both the radiation of a primary beam of x-rays or gamma rays and the radiation scattered by the surrounding air.

French

Domaine(s)
  • Physique radiologique et applications
DEF

La dose dans l'air correspond à la dose absorbée par un volume infiniment petit d'eau dans l'axe d'un faisceau [...] à une distance définie de la source.

CONT

Les doses « physiquement mesurables » en radiologie conventionnelle : exprimées en mGy, elles correspondent à l'énergie communiquée aux tissus. Elles représentent le fondement de la dosimétrie quelque soit la technique de mesure employée. La diversité des différentes « entités doses » proposées explique la confusion du clinicien et du radiologue. Schématiquement on peut décrire sur l'axe de propagation des rayons X depuis la source du rayonnement X jusqu'au patient : la dose dans l'air correspondant à la dose évaluée en un point du faisceau en dehors du patient; le produit dose surface, qui est le produit de la dose moyenne absorbé dans l'air à la section droite du faisceau par la surface de cette section; la dose d'entrée, dose évaluée à l'entrée du patient (elle correspond à la dose absorbée au point d'intersection de l'axe du faisceau et de la peau du patient : elle représente donc la dose dans l'air à ce point, à laquelle vient se rajouter le rayonnement rétro-diffusé lié au patient); la dose moyenne délivrée à un organe.

Spanish

Save record 7

Record 8 - external organization data 2003-07-02

English

Subject field(s)
  • Measuring Instruments (Engineering)
  • Radiological Physics (Theory and Application)
  • Radiation Protection
  • Compartment - Canadian Nuclear Safety Commission
CONT

... performing prescribed tests during the measuring process, to ensure that reading and counting equipment are functioning satisfactorily, that all devices(e. g., dosimeters, air sampling pumps), are in good working order and that procedures have been followed in order to give confidence in the reliability of the dose data.

French

Domaine(s)
  • Instruments de mesure (Ingénierie)
  • Physique radiologique et applications
  • Radioprotection
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

[...] l'exécution des épreuves prévues durant le processus de mesure pour s'assurer que les appareils de lecture et de comptage fonctionnent de façon satisfaisante, que tous les dispositifs comme les dosimètres, les pompes d'échantillonnage de l'air, sont en bon état de marche et que les procédures ont été suivies pour que l'on puisse se fier aux données sur les doses.

Spanish

Save record 8

Record 9 - external organization data 2003-07-02

English

Subject field(s)
  • Radiation Protection
  • Radiological Physics (Theory and Application)
  • Compartment - Canadian Nuclear Safety Commission
DEF

Exposure to an internal or external source of radiation, or, depending on the context, the product of the concentration of a radioactive substance in air(or the dose rate from a source of radiation) and the duration of exposure to that concentration(or dose rate).

French

Domaine(s)
  • Radioprotection
  • Physique radiologique et applications
  • Tiroir - Commission canadienne de sûreté nucléaire
DEF

Exposition à une source interne ou externe de rayonnements ou, selon le contexte, le produit de la concentration d'une substance radioactive dans l'air (ou du débit de dose provenant d'une source de rayonnements) et de la durée de l'exposition à cette concentration (ou à ce débit de dose).

Spanish

Save record 9

Record 10 - external organization data 2003-04-15

English

Subject field(s)
  • Measuring Instruments (Engineering)
  • Radiological Physics (Theory and Application)
  • Radiation Protection
  • Compartment - Canadian Nuclear Safety Commission
CONT

... performing prescribed tests during the measuring process, to ensure that reading and counting equipment are functioning satisfactorily, that all devices(e. g., dosimeters, air sampling pumps), are in good working order and that procedures have been followed in order to give confidence in the reliability of the dose data.

French

Domaine(s)
  • Instruments de mesure (Ingénierie)
  • Physique radiologique et applications
  • Radioprotection
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

[...] l'exécution des épreuves prévues durant le processus de mesure pour s'assurer que les appareils de lecture et de comptage fonctionnent de façon satisfaisante, que tous les dispositifs comme les dosimètres, les pompes d'échantillonnage de l'air, sont en bon état de marche et que les procédures ont été suivies pour que l'on puisse se fier aux données sur les doses.

Spanish

Save record 10

Record 11 - external organization data 2002-03-15

English

Subject field(s)
  • Measuring Instruments (Engineering)
  • Scientific Instruments
  • Radiological Physics (Theory and Application)
  • Compartment - Canadian Nuclear Safety Commission
DEF

A small air-filled ionization chamber(about the size and shape of a cigar) that measures radiation dose by responding to ionization of the air contained in the chamber.

CONT

The two most commonly used types of dosimeters are direct reading dosimeters (DRD) and thermoluminescent dosimeters (TLD) .... The DRD allows you to periodically check the amount of radiation you are receiving at any given moment. A quartz fibre within the dosimeter measures the radiation by moving along a scale and provides an indication of your exposure.

French

Domaine(s)
  • Instruments de mesure (Ingénierie)
  • Instruments scientifiques
  • Physique radiologique et applications
  • Tiroir - Commission canadienne de sûreté nucléaire
DEF

Petite chambre d'ionisation remplie d'air (à peu près les dimensions et la forme d'un cigare) qui mesure la dose de rayonnement selon l'ionisation de l'air contenu dans la chambre.

CONT

Les deux types de dosimètres les plus utilisés sont le dosimètre à lecture directe (DLD) et le dosimètre thermoluminescent (DTL). [...] Le DLD permet de vérifier régulièrement la quantité de rayonnement reçue à n'importe quel moment donné. Une fibre de quartz placée à l'intérieur du dosimètre mesure les rayonnements en se déplaçant sur une échelle graduée et fournit une lecture de votre dose.

Spanish

Save record 11

Record 12 2001-06-26

English

Subject field(s)
  • Nuclear Physics
  • Atomic Physics
  • Scientific Measurements and Analyses
DEF

Total electric charge of the ions of one sign produced by any ionizing radiation in an element of air divided by the mass of that element. [Définition standardized by ISO.]

DEF

A dose produced by X-rays or gamma radiation and equal to the quotient of the electric charge of the ions created in a specified volume directly or indirectly by irradiation, by the mass of air in this volume.

OBS

Ion dose is sometimes expressed in coulombs per kilogram (formerly expressed in roentgens).

OBS

ion dose: term standardized by ISO.

French

Domaine(s)
  • Physique nucléaire
  • Physique atomique
  • Mesures et analyse (Sciences)
DEF

Charge électrique totale des ions d'un même signe, produits par un rayonnement ionisant dans un élément d'air, divisée par la masse de cet élément. [Définition normalisée par l'ISO.]

OBS

La dose ionique est parfois exprimée en coulombs par kilogramme (précédemment exprimée en röntgens).

OBS

dose ionique : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Física nuclear
  • Física atómica
  • Medición y análisis (Ciencias)
Save record 12

Record 13 - external organization data 2000-05-11

English

Subject field(s)
  • Radiological Physics (Theory and Application)
  • Compartment - Canadian Nuclear Safety Commission
CONT

The determination of radiation dose is a two-part process. First, a measurement is made, using, for instance, a dosimeter, a urine specimen or an air sample. Second, this measurement is used in a "dosimetric model" to calculate the dose, usually the effective dose or a conservative estimate of this quantity. Dosimetric models may be simple, as in the case of external gamma exposure, where a dosimeter reading is converted to dose by means of a simple conversion factor. For bioassay, however, the conversion of a urine measurement to a dose requires knowledge of the metabolism of the radionuclide, the time and route of intake, and several other factors.

French

Domaine(s)
  • Physique radiologique et applications
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

Pour déterminer les doses de rayonnement, on procède en deux étapes. À l'aide d'un dosimètre, d'un échantillon d'urine ou d'air, par exemple, on prend d'abord une mesure qui sert ensuite de «modèle dosimétrique» pour calculer la dose. Cette dose est normalement la dose effective ou un calcul estimatif prudent de cette valeur. Les modèles dosimétriques peuvent être simples, comme dans le cas des expositions externes gamma où l'on multiplie le relevé du dosimètre par un facteur de conversion pour le convertir en dose. Dans le cas des biodosages, cependant, la conversion de la mesure de l'échantillon d'urine en dose exige une bonne connaissance du métabolisme du radionucléide, de l'heure et du cheminement de l'incorporation, ainsi que de plusieurs autres facteurs.

Spanish

Save record 13

Record 14 1999-06-30

English

Subject field(s)
  • Pollutants
  • Scientific Instruments
OBS

Based on the Continuous Monitoring System series from Laboratory Impex Systems Ltd, the TIM-2000 was designed to enhance and augment the already established LIS CMS 2000 and provide truly portable and flexible particulate monitoring for numerous applications. Quality assured alpha, beta, gamma, iodine and noble gas monitoring may all be provided. The system incorporates the CMS 2000 and PMP-6 vacuum air pump; sampling air normally at 37 litres per minute to facilitate accurate inhalation dose assessment. Optional gamma dose rate channels may be added to the system. The unit is provided with an on board alarm system and is complete with rugged hand trolley.

French

Domaine(s)
  • Agents de pollution
  • Instruments scientifiques

Spanish

Save record 14

Record 15 - external organization data 1997-12-22

English

Subject field(s)
  • Radiation Protection
  • Radiological Physics (Theory and Application)
  • Compartment - Canadian Nuclear Safety Commission
DEF

A limit on a quantity such as dose, dose rate, concentration of radioactive substances in air or water or on surfaces, or effluent rate, which is established by a licensee for purposes of routine dose control.

OBS

... operational limits are generally lower than regulatory limits, but could equal regulatory limits in some circumstances.

French

Domaine(s)
  • Radioprotection
  • Physique radiologique et applications
  • Tiroir - Commission canadienne de sûreté nucléaire
DEF

Limite imposée à une quantité, par exemple la dose, le débit de dose, la concentration de substances radioactives dans l'air, dans l'eau ou sur des surfaces, ou le débit des effluents, établie par le titulaire de permis aux fins de contrôle routinier des doses [...]

Spanish

Save record 15

Record 16 1996-05-10

English

Subject field(s)
  • Toxicology
  • Radiation Protection
  • Nuclear Waste Materials
CONT

Although there are no scientifically proven minimum safe limits for concentrations of certain toxic and carcinogenic chemicals in food, air and water, such "safe limits" in fact have been set by the appropriate food and drug administrations or their equivalents. The implication is that a dose of low-level radiation with no acceptable safe level is more health-threatening than a low-level dose of, for example, dioxin. In fact, the Task Force finds it is more reasonable to accept a maximum permissible level for ionizing radiation because background radiation is a ubiquitous, naturally occurring phenomenon, whereas there is no naturally occurring level of polychlorinated biphenyls.

French

Domaine(s)
  • Toxicologie
  • Radioprotection
  • Déchets nucléaires

Spanish

Campo(s) temático(s)
  • Toxicología
  • Protección contra la radiación
  • Desechos nucleares
Save record 16

Record 17 1996-05-10

English

Subject field(s)
  • Radiation Protection
CONT

Although there are no scientifically proven minimum safe limits for concentrations of certain toxic and carcinogenic chemicals in food, air and water, such "safe limits" in fact have been set by the appropriate food and drug administrations or their equivalents. The implication is that a dose of low-level radiation with no acceptable safe level is more health-threatening than a low-level dose of, for example, dioxin. In fact, the Task Force finds it is more reasonable to accept a maximum permissible level for ionizing radiation because background radiation is a ubiquitous, naturally occurring phenomenon, whereas there is no naturally occurring level of polychlorinated biphenyls.

French

Domaine(s)
  • Radioprotection

Spanish

Campo(s) temático(s)
  • Protección contra la radiación
Save record 17

Record 18 1996-03-28

English

Subject field(s)
  • Injections, Tubing and Transfusions (Medicine)
OBS

"Piggyback" intravenous administration is a means of administering medication via the fluid pathway of an established primary infusion line. Features and Advantages : 1. Drugs may be given on an intermittent basis through a "keep-open" infusion. 2. The secondary bottle contains the medication; this may be single dose or multiple dose. 3. When desired, the primary infusion is clamped off and the prescribed amount of medication from the secondary bottle is administered. 4. A check-valve performs the following functions : a. Permits the primary infusion to flow after the medication has been administered b. Prevents air from entering the system c. Prevents secondary fluid from "running dry" d. Permits less mixing of primary fluid with secondary solution 5. Higher flow rates can be achieved by elevating either of the receptacles.

French

Domaine(s)
  • Injections, tubages et transfusions (Médecine)

Spanish

Save record 18

Record 19 - external organization data 1994-11-17

English

Subject field(s)
  • Measuring Instruments (Engineering)
  • Radiological Physics (Theory and Application)
  • Radiation Protection
  • Compartment - Canadian Nuclear Safety Commission
CONT

... performing prescribed tests during the measuring process, to ensure that reading and counting equipment are functioning satisfactorily, that all devices(e. g., dosimeters, air sampling pumps), are in good working order and that procedures have been followed in order to give confidence in the reliability of the dose data.

French

Domaine(s)
  • Instruments de mesure (Ingénierie)
  • Physique radiologique et applications
  • Radioprotection
  • Tiroir - Commission canadienne de sûreté nucléaire
CONT

[...] l'exécution des épreuves prévues durant le processus de mesure pour s'assurer que les appareils de lecture et de comptage fonctionnent de façon satisfaisante, que tous les dispositifs comme les dosimètres, les pompes d'échantillonnage de l'air, sont en bon état de marche et que les procédures ont été suivies pour que l'on puisse se fier aux données sur les doses.

Spanish

Save record 19

Record 20 1985-12-19

English

Subject field(s)
  • Anti-pollution Measures
CONT

The next step in quantifying health effects would be to estimate the decline in the number of cases of diseases that may result if the proposed light duty vehicle emission standards are implemented. Two types of data are required to make this estimate : 1. Dose-response functions for each adverse effect(the mathematical relationship between the dose of a pollutant that an individual receives and the probability that he will experience a particular adverse effect) ;and 2. Estimates of the impact of the proposed light duty vehicle standards on the number, ambient concentrations, and duration of concentrations of CO, NOx and O3 in excess of National Ambient Air Quality Objectives.

French

Domaine(s)
  • Mesures antipollution

Spanish

Save record 20

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