dose equivalent


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dose equivalent

n
(General Physics) a quantity that expresses the probability that exposure to ionizing radiation will cause biological effects. It is usually obtained by multiplying the dose by the quality factor of the radiation, but other factors may be considered. It is measured in sieverts (SI unit) or rems
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The measurements provide the data on the absorbed dose and dose equivalent from galactic cosmic rays and solar energetic particles on the surface of Mars that are 0.21 [+ or -] 0.04 mGr/day and 0.64 [+ or -] 0.12 mSv/day, respectively [Table 1].
This, in turn, allows to determine the values of kerma rate and dose equivalent rate and finally to assess the time length of the detectors' exposure at the source.
Which: RER (%) = Relative Efficiency Ratio; Inoculated MS = total dry mass of the inoculated treatment, with dose equivalent to 50 kg N ha-1;
Subpart H is therefore intended to limit radionuclide emissions (except radon) from the stacks and vents at DOE facilities to ensure no member of the public receives an effective dose equivalent to more than 10 millirems per year (mrem/yr) or in SI units 0.1 millisievert per year (mSv/yr).
The annual effective dose equivalent was calculated by the following equation (UNSCEAR, 1988):
Conversions (41) Unit Abbrev Measurement of Equivalent 1 kilobecquerel 1 kBq Activity 27 nanocuries 1 Becquerel 1 Bq Activity 27 picocuries 1 Curie 1 Ci Activity 37 gigabecquerels 1 microcurie 1 [micro]Ci Activity 37 kilobecquerels 1 Sievert 1 Sv Dose equivalent 100 rem 1 millisievert 1 mSv Dose-equivalent 100 millirem 1 microsievert 1 [micro]Sv Dose-equivalent 0.1 millirem 1 rem 1 rem Dose-equivalent 10 millisieverts 1 millirem 1 mrem Dose-equivalent 10 microsieverts 1 Gray 1 Gy Dose 100 rads 1 milligray 1 mGy Dose 100 millirads= 0.1 rad 1 rad 1 rad Dose 10 milligrays= 1 centigray
Every day they were given a peanut protein powder - starting off on a dose equivalent to one 70th of a peanut.
The key idea of this model is the use of a differential equation for cell killing (for which the LQ law is a solution) and to substitute the absorbed dose D by a biological dose equivalent [GAMMA].
Don Hassler, a Southwest Research Institute program director and RAD principal investigator said that the RAD surface radiation data show an average GCR dose equivalent rate of 0.67 millisieverts per day from August 2012 to June 2013 on the Martian surface.
Measurements made on two scanners in active use at Los Angeles International Airport, as well as seven other scanners not in active use at the time of measurement, found that full-body scanners deliver a radiation dose equivalent to what a standard man receives every 1.8 minutes on the ground, or every 12 seconds during an airplane flight.
Measurements made on two scanners in active use at Los Angeles International Airport (LAX), as well as seven other scanners not in active use at the time of measurement, found that full-body scanners deliver a radiation dose equivalent to what a standard man receives every 1.8 minutes on the ground, or every 12 seconds during an airplane flight.
Several measurements and calculations were performed to illustrate the differences that can be observed in the determination of exposure rate or ambient dose equivalent rate used for testing radiation detection systems against consensus standards.