Results 91 to 100 of about 1,281 (136)

The use of 90Sr/90Y generator for electrochemical separation of 90Y from 90Sr [PDF]

, 2013
90Y is a radioisotope and decay product of 90Sr for therapeutic purpose due to its suitable half-life T1/2=64.1h. The half-life of 90Sr is longer (T1/2=28,9 years) and have a high skeleton uptake. To obtain a radionuclide with a high level of purity is necessary to separate 90Y from the bulk of 90Sr. The most promising approach to separate 90Y from the
Arev, Marija, Janevik-Ivanovska, Emilija, Smilkov, Katarina, Gjorgieva Ackova, Darinka   +3 more
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Prediction of Runoff Transport of Fallout 90Sr

Health Physics, 1994
A model is described for the prediction of runoff transfer of fallout 90Sr without recourse to long-term measurements. The values of model parameters can be readily established from few field measurements of the solid/solution partitioning of 90Sr and a natural, atmospherically delivered radionuclide such as 210Pb, and the usually well documented ...
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A measurement of the half-life of 90Sr

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1994
Abstract The half-life of 90 Sr has been measured to be 10561±14 d, where the uncertainty combines components of Type A and Type B equivalent to one standard deviation. Data from 4πβ proportional counting of four 90 Sr sources spanned 33 yr and yielded a total of 521 points.
Robert H Martin, Kerry I.W Burns, John G.V Taylor   +2 more
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137Cs and 90Sr IN lizards of Semipalatinsk test site

Journal of Environmental Radioactivity, 2017
The paper provides research results of 137Cs and 90Sr radionuclides concentrations in bodies of Lacertidae family lizards, inhabiting different parts of Semipalatinsk Test Site, and the parameters of these radionuclides' transfer into lizards' bodies. It shows that high activity concentration of radionuclides in lizards' bodies can be noticed if they ...
А V, Panitskiy, S N, Lukashenko, N Zh, Kadyrova   +2 more
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Half-lives of 90Sr and 137Cs

Journal of Inorganic and Nuclear Chemistry, 1965
The half-lives of 90Sr and 137Cs have been measured both by specific activity and by direct decay over periods of 6–10 years. The results of the decay measurements are 28·0 ± 0·4 years for 90Sr and 29·9 ± 0·5 years for 137Cs; the values obtained by specific activity measurements are 28·5 ± 0·9 years for 90Sr and 30·9 ± 0·7 years for 137Cs. Recommended “
K.F. Flynn, L.E. Glendenin, A.L. Harkness, E.P. Steinberg   +3 more
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An Improved Method for Determining 89Sr and 90Sr in Urine

Health Physics, 1991
A method has been developed for the rapid isolation and quantitation of 89Sr and 90Sr in urine samples. The radiostrontium is concentrated from the bulk urine sample by coprecipitation with calcium phosphate. The precipitate is then wet ashed with nitric acid, and a solution of the resulting residue in 2 M HNO3-0.5 M Al(NO3)3 is passed through an ...
M L, Dietz, E P, Horwitz, D M, Nelson, M, Wahlgren   +3 more
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Development of realtime 90Sr counter

2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC), 2013
In March 2011, a large earthquake hit Japan and damaged seriously. Because of this disaster, accidents was happen at Fukushima No.1 nuclear power plant and many radioisotope has been released into the Japanese coast of the Pacific Ocean. We pay attention to 90Sr and propose the method to detect it in an hour.
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EPR dose reconstruction for bone-seeking 90Sr

Applied Radiation and Isotopes, 1999
The results of the EPR dose reconstruction in calcified tissues of dog injected with 90Sr are presented. It has been established that there is no essential difference in the values of doses absorbed in tooth tissues of teeth in symmetric positions in the mouth, whereas a significant difference occurs in the values of absorbed doses in teeth in non ...
E A, Ignatiev, N M, Lyubashevskii, E A, Shishkina, A A, Romanyukha   +3 more
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COMPARISON OF FOUR 90Sr GROUNDWATER ANALYTICAL METHODS

Health Physics, 1999
Data are presented for 45 Long Island groundwater samples each measured for 90Sr using four different analytical methods. 90Sr levels were first established by two New York State certified laboratories, one of which used the U.S. Environmental Protection Agency Radioactive Strontium in Drinking Water Method 905.0. Three of the 90Sr methods evaluated at
S, Scarpitta, J, Odin-McCabe, R, Gaschott, A, Meier, E, Klug   +4 more
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Levels of 90Sr and 137Cs in the urine of Finnish people

Radiation Protection Dosimetry, 2003
The aim of this study was to estimate the current concentrations of 90Sr and 137Cs in the urine of Finnish people and to estimate the doses. Two to three daily urine samples were collected from 18 adult Finnish volunteers in connection with studies of 137Cs body burdens in 1999-2001. The 90Sr activities in urine varied between 1.4 and 11 mBq l(-1). The
M, Puhakainen, T, Heikkinen, T, Rahola
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