Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Marcelo Bessa Nisti"'
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 10, Iss 3B (2022)
The approach taken in the WHO Guidelines for controlling radiological hazards in public water supplies has two stages. The first is an initial screening for gross alpha and beta activity to determine whether the activity concentrations are below leve
Externí odkaz:
https://doaj.org/article/41ae447e73704020a05977ae45addb18
Autor:
Marcelo Bessa Nisti, Marcelo Francis Máduar, Sandra Regina Damatto, Marcos Medrado de Alencar
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 10, Iss 3B (2022)
The aim of this study is to determine an easy and fast method to calculate efficiencies in different volumes, in the same counting geometry, for gamma-ray spectrometry technique. Reference Material Soil IAEA 326 was packed in a 100 mL capacity polyet
Externí odkaz:
https://doaj.org/article/c96240d01d5846018fa7bb16ad4bf1c2
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 10, Iss 3B (2022)
The aim of the study was to determine the activity concentration of the natural radionuclides (226Ra, 210Po, 228Ra and 40K) and artificial radionuclide 137Cs in the muscle of the marine fish species most consumed in the city of São Paulo and to eval
Externí odkaz:
https://doaj.org/article/0a6434c870624750be667831c6afce7b
Autor:
Marcelo Bessa Nisti, Fernanda Cavalcante, Catia Heloisa Rosignoli Saueia, Barbara Paci Mazzilli
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 10, Iss 1 (2022)
All biota is exposed to natural radiation, the soil being the major source of radionuclides. Phosphogypsum is classified as a NORM residue of the phosphate fertilizer industry, often used in agriculture, as a soil conditioner. This residue is stored
Externí odkaz:
https://doaj.org/article/15f87aa9ebc949e9841306459112a010
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 9, Iss 1A (2021)
Humans are exposed to natural radiation; soil is a major source of external and internal exposure of radiation. The aim of this study is to evaluate the exposure levels of terrestrial biota and to estimate the radiation exposure around Instituto of P
Externí odkaz:
https://doaj.org/article/dc1ef6a8436b4e6882892440c4e20fe8
Autor:
Marcelo Bessa Nisti, Marcelo Francis Máduar, Catia Heloisa Rosignoli Saueia, Fernanda Cavalcante, Barbara Paci Mazzilli
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 8, Iss 2 (2020)
This paper aims to propose an easy and fast method of optimization of the gamma-ray spectrometry counting time in determining natural radionuclides (Pb-210, Pb-212, Pb-214, Bi-212, Bi-214 and Ac-228) in order to minimize uncertainties in the concentr
Externí odkaz:
https://doaj.org/article/445e0cab88d44cf6ab1e43895fa4f48f
Autor:
Barbara Paci Mazzilli, Marcia Pires Campos, Marcelo Bessa Nisti, Cátia Heloisa Rosignoli Saueia, Marcelo Francis Máduar
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 8, Iss 1 (2020)
Phosphogypsum, a waste byproduct derived from the production of phosphoric acid, is being worldwide stockpiled, posing concerns about the environmental problems originating from this practice. Considerations about the viability of the safe reuse of t
Externí odkaz:
https://doaj.org/article/f39d98a949514352aeb842b744a4b7e2
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 7, Iss 3 (2019)
Phosphogypsum (PG), a by-product from the phosphoric acid industry, is being worldwide stockpiled, posing environmental problems. Viability of the PG safe re-use in civil construction has been studied, as PG can contain natural radionuclides in signi
Externí odkaz:
https://doaj.org/article/ce8c2bd792024db18edd7970ca119b16
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 7, Iss 2A (2019)
The study of artificial radionuclides dispersion into the environment is very important to control the nuclear waste discharges, nuclear accidents and nuclear weapons testing. The accidents in Fukushima Daiichi Nuclear Power Plant and Chernobyl Nucle
Externí odkaz:
https://doaj.org/article/effc0891adda470692464becaf962d4e
Autor:
Marcelo Bessa Nisti
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
O fertilizante fosfatado brasileiro é obtido pela reação por via úmida da rocha fosfática de origem ígnea com ácido sulfúrico concentrado, obtendo como produto final, o ácido fosfórico e como resíduo, o fosfogesso, que é estocado em pilha