Zobrazeno 1 - 10
of 36
pro vyhledávání: '"B.R.S. Pecequilo"'
Publikováno v:
Brazilian Journal of Radiation Sciences. 9
Granitic rocks, widely used as building materials, are known to contain natural radionuclides and can be an important source of radiation for the population. Thirty-four samples of granite rocks from geological occurrences in Parana state were measur
Publikováno v:
Radiation Protection Dosimetry. 145:252-255
Indoor radon concentrations have been measured in Santana cave, the most frequented cave of PETAR (High Ribeira River Tourist State Park), situated southern of Sao Paulo State, Brazil. The measurements were carried out with CR-39 detectors installed
Publikováno v:
Radioprotection. 46:S43-S47
Natural radioactivity concentrations in commercially-used granites from Parana state, Brazil, were measured in order to estimate the potential radiological hazard to mankind due to granite as an ornamental building material through the 226 Ra, 232 Th
Publikováno v:
Radioprotection. 46:S49-S54
Radon (222 Rn) is the most important cause of exposure to mankind due to natural radioactivity. Radon exhalation depends not only on the 226 Ra concentration in the material, but also on other factors such as mineralogy of the region, size and densit
Autor:
L. Sousa Silva, B.R.S. Pecequilo
Publikováno v:
Radioprotection. 46:S63-S67
The levels of gross alpha and beta natural radioactivities in surface, underground and drinking waters consumed by the urban and rural population living in Lagoa Real Uranium Province of central south Bahia state, Brazil were determined in several sa
Autor:
B.R.S. Pecequilo, L.F. Barros
Publikováno v:
Radiation Physics and Chemistry. 95:339-341
Gamma-ray self-attenuation factors were calculated for sand samples collected in January 2011 at 11 selected locations covering the 6 km extension of Camburi Beach, ES, Brazil. Samples apparent densities ranged from 1.36 g/cm3 to 1.81 g/cm3. The self
Autor:
B.R.S. Pecequilo, M. M. Alencar, Adir Janete Godoy dos Santos, S. R. D. Moreira, Marcelo Bessa Nisti, Marcelo Francis Máduar
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 281:283-286
Time counting optimization in gamma-ray spectrometry was established using four HPGe detectors and four counting geometries. Deionized water samples with a mixed radioactive solution of 133Ba, 134Cs, 106Ru, 137Cs, 65Zn, and 60Co were prepared in volu
Autor:
B.R.S. Pecequilo, Daniela Campos, Sandra R. Damatto, Demerval L. Rodrigues, Matias P. Sanches, Janete Cristina Gonçalves Gaburo Carneiro, Paulo R Nogueira
Publikováno v:
Brazilian Journal of Radiation Sciences. 3
The main objective of this work is to evaluate the 2013 annual radiological control results in the radiopharmaceuticals areas of the Nuclear and Energy Research Institute, IPEN/SP, and the environmental radiological impact, resulting from the practic
Autor:
B.R.S. Pecequilo, L. Leonardo
Publikováno v:
Radioprotection. 40:S779-S784
Tritium concentrations of groundwater samples from the Environmental Monitoring Program at IPEN (Institute of Nuclear and Energetic Researches), Sao Paulo, Brazil, covering the years 2000 to 2003, were determined by liquid scintillation counting and
Autor:
L. Venturini, B.R.S. Pecequilo
Publikováno v:
Applied Radiation and Isotopes. 48:493-496
The thermal neutron capture cross sections of 48 Ti, 51 V, 50,52,53 Cr and 58,60,62,64 NI were re-estimated using recent data on the thermal neutron capture cross-section of the 14 N. The γ-ray spectra emitted after thermal capture were studied usin