sievert

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sievert

[′zē·vərt]
(nucleonics)
The International System unit of dose equivalent, equal to the dose equivalent when the absorbed dose of ionizing radiation multiplied by stipulated dimensionless factors is 1 joule per kilogram. Abbreviated Sv.
A unit of radiation dose, equal to the dose delivered by a point source of 1 milligram of radium, enclosed in a platinum container with walls 0.5-millimeter thick, to a sample at a distance of 1 centimeter over a period of 1 hour; equal to approximately 8.38 roentgens. Also known as millicurie-of-intensity-hour.
References in periodicals archive ?
Radiation meters may be calibrated in microsieverts; 100,000 pSv sounds frightening, but it is 100 mSv, the minimal acute dose associated with a small, about 5%, increase in cancer risk, if delivered at a very high dose rate.
What does 40,000 microsieverts of radiation do to a child?
(15) The problem is that the dose rate in microsieverts per hour cannot be used to reassure on the basis of comparisons with annual natural background.
Sievert (Sv), a measure of radiation, was one of the most common terms in the crisis, with microsieverts and millisieverts appearing in a high percentage of news stories.
March 20, almost all the readings were less than 15 microsieverts per
In Tokyo, a metropolis of 13 mln people, a Reuters reading on Saturday morning showed ambient radiation of 0.22 microsieverts per hour, about six times normal for the city.
Within the area, the team identified three spots where the radiation level was around 500 microsievert per hour," Raina said.
A typical scan lasts about eight seconds and results in an effective dose of approximately 0.03 microsievert (uSv)1 to the individual.
The estimated magnitude of increase was 1% per microsievert per hour [95% confidence interval (CI), 0.7-1.2].
On the second and third floors, the inside readings were 0.1 and 0.3 microsievert.
About 40 children commuting to two nurseries in central areas of Koriyama, where radiation of 0.9 microsievert per hour is recorded, and their teachers took a bus to an educational facility some 30 kilometers away where the radiation level is 0.1 microsievert per hour.
Radiation levels in downtown Tokyo stood at 0.079 microsievert an hour at 9