Equivalent Radium
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Investigation the natural radioactivity in local and imported chemical fertilizers
In order to assess the radioactive level in the environment, the specific activities of 238U, 232Th and 40K were measured by using a gamma ray spectrometer based on a NaI(Tl) detector. The results showed that the specific activities of 238U, 232Th and 40K were 12.846-88.585, 1.304-26.656 and 11.598-2275.896 Bq/kg respectively. The radium equivalent activity
Brazilian Archives of Biology and Technology. Publicado em: 2011-08
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2. Avaliação radiométrica do U-238, Ra-226, Th-232 e K-40 em uma área anômala do agreste de Pernambuco
Estudos radiométricos e radioecológicos vêm sendo desenvolvidos mundialmente, em busca do mapeamento de áreas com elevados níveis de radioatividade, um pré-requisito essencial na investigação da exposição à radioatividade ambiental. Nesse trabalho foram estudadas amostras de rochas e solo derivado de uma área efetivamente anômala em urânio no m
Publicado em: 2009
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3. EXTERNAL EXPOSURE ASSESSMENT IN DWELLING BUILT WITH PHOSPHOGYPSUM / Avaliação da exposição externa em residência construída com fosfogesso
In this study it was evaluated the viability of the use of phosphogypsum plates as a building material in the dwelling construction. Thus, the effective dose due to external gamma exposure was assessed through the 226Ra, 232Th, 210Pb e 40K activity concentration in phosphogypsum plates. Samples of this material were analyzed by high resolution gamma spectrom
Publicado em: 2008
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4. Bismuth-212-labeled anti-Tac monoclonal antibody: alpha-particle-emitting radionuclides as modalities for radioimmunotherapy.
Anti-Tac, a monoclonal antibody directed to the human interleukin 2 (IL-2) receptor, has been successfully conjugated to the alpha-particle-emitting radionuclide bismuth-212 by use of a bifunctional ligand, the isobutylcarboxycarbonic anhydride of diethylenetriaminepentaacetic acid. The physical properties of 212Bi are appropriate for radioimmunotherapy in t