Zobrazeno 1 - 10 of 30 pro vyhledávání: '"Nivaldo Carlos Da Silva"'
1
Akademický článek
Evaluation of indoor radon gas levels in three Brazilian municipalities located in the state of Minas Gerais
Autor: Ubirani Otero, Nivaldo Carlos Da Silva, Tarcisio Neves da Cunha, Barbara Geraldino, Berenice Navarro Antoniazzi
Publikováno v: Brazilian Journal of Radiation Sciences, Vol 12, Iss 2 (2024)
Ionizing radiation, particularly radon exposure, constitutes a significant risk factor for lung cancer, with the World Health Organization identifying radon as the second major contributor to this malignancy. This study investigates radon levels in d
Externí odkaz: https://doaj.org/article/7598e8d2235d41ed92927573103c8237
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2
Akademický článek
Indoor radon assessment in kindergartens: towards a national action plan
Autor: Danila Carrijo da Silva Dias, Nivaldo Carlos da Silva, Wanilson Luiz Silva, Marcos Vinícius Rodrigues
Publikováno v: Brazilian Journal of Radiation Sciences, Vol 9, Iss 2 (2021)
The study presents the results of indoor radon monitoring of 342 public kindergarten rooms of a Brazilian municipality within a region featuring high natural radioactivity. Facility characterization local perception assessment were also conducted. Ro
Externí odkaz: https://doaj.org/article/d4cd4cc3564b4f4ea551561d245b50db
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3
Akademický článek
Biological Response of Tradescantia Stamen-hairs to High Levels of Natural Radiation in the Poços de Caldas Plateau
Autor: Heliana de Azevedo Gomes, Yannick Nouailhetas, Nivaldo Carlos da Silva, Arnaldo Mezrahi, Carlos E. Bonacossa de Almeida, Geraldo Stachetti Rodrigues
Publikováno v: Brazilian Archives of Biology and Technology, Vol 45, Iss 3, Pp 301-307 (2002)
The objective of the present study was to apply a highly sensitive botanical test of mutagenicity (the Tradescantia stamen-hair mutation bioassay) to assess in situ the biological responses induced by naturally occurring radiation in the Poços de Ca
Externí odkaz: https://doaj.org/article/f392cc7bd18149b8bd48115157da266d
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4
Evaluation of ionizing radiation as a risk factor for the incidence of breast cancer: long-term analysis after the cesium-137 accident in Goiânia, Brazil. An ecological study
Autor: Leonardo Bastos Lage, Leonardo Ribeiro Soares, Ruffo Freitas-Junior, Eliane Eugenia dos Santos, Rosangela da Silveira Corrêa, Nivaldo Carlos da Silva, Nilson Clementino Ferreira
Publikováno v: Sao Paulo Medical Journal, Issue: ahead, Published: 14 AUG 2020
São Paulo Medical Journal, Vol 138, Iss 4, Pp 297-304 (2020)
Sao Paulo Medical Journal, Volume: 138, Issue: 4, Pages: 297-304, Published: 14 AUG 2020
Sao Paulo Medical Journal v.138 n.4 2020
São Paulo medical journal
Associação Paulista de Medicina
instacron:APM
BACKGROUND: The largest radiological accident to occur in any urban area happened in Goiânia, Brazil, in 1987. OBJECTIVE: To evaluate the association between breast cancer incidence and ionizing radiation levels. DESIGN AND SETTING: Ecological study
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c5b528012f258138ba409e672149de1
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802020005017201&lng=en&tlng=en
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5
ISO/IEC 17025 accreditation of radiation measurement test methods in the Brazilian National Commission for Nuclear Energy – Laboratory of Poços de Caldas
Autor: Daniela de Assis Bocóli, Rodrigo Leandro Bonifácio, Maria Helena Tirollo Taddei, M.R.L. Nascimento, Danila Carrijo da Silva Dias, Nivaldo Carlos da Silva
Publikováno v: Brazilian Journal of Radiation Sciences. 6
This paper describes the implementation process of a Quality Management System (QMS) at the Laboratory of Poços de Caldas (LAPOC) in Brazil, aiming for ISO/IEC 17025 accreditation. Due to the governmental nature of the entity, all accreditation effo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c4be922cdab03f2c96baf0e4250ef17e
https://doi.org/10.15392/bjrs.v6i3.361
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6
A Comparative Study of Methods for Determining the Concentration of Radon-222 in Spring Waters in Poços de Caldas Plateau, Brazil
Autor: Peter Marshall Fleming, Flavio Henrique de Souza Moreira, Heber Luiz Caponi Alberti, Maria Helena Tirollo Taddei, Nivaldo Carlos da Silva
Publikováno v: Revista Águas Subterrâneas, Vol 32, Iss 1, Pp 114-120 (2018)
Este estudo é uma comparação de métodos para determinar a concentração de radônio (222Rn), que foi realizado em fontes de água natural utilizadas pela população das cidades de Poços de Caldas e Águas da Prata no Planalto de Poços de Cald
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2a54be8b7ba9505049eb50418e8b6dd
https://doi.org/10.14295/ras.v32i1.28973
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8
Towards a Brazilian radon map: consortium radon Brazil
Autor: A. L. Ferreira Filho, S A Paschuk, Elisabeth Mateus Yoshimura, Peter Bossew, Alcides Pereira, L H S Veiga, T F C Campos, M P Campos, D M Bonotto, Nivaldo Carlos da Silva, Z Rocha
Publikováno v: Radiation protection dosimetry. 160(1-3)
Recently, the idea of generating radon map of Brazil has emerged. First attempts of coordinating radon surveys--carried out by different groups across the country--and initial discussions on how to proceed on a larger scale were made at the First Bra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92d7df7439c3cc2fb81523e29f16f25b
https://pubmed.ncbi.nlm.nih.gov/24743768
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9
Radon as a natural tracer for gas transport within uranium waste rock piles
Autor: Peter Marshall Fleming, Dina L. López, E. G. L. Chagas, O. Branco, D. C. S. Dias, Nivaldo Carlos da Silva, M. L. Braz, Heber Luiz Caponi Alberti, C. B. Abreu, E. T. Z. Guerreiro
Publikováno v: Radiation protection dosimetry. 160(1-3)
Acid mine drainage (AMD) has been identified as the main cause for outflow of acid water and radioactive/non-radioactive contaminants. AMD encompasses pyrites oxidation when water and oxygen are available. AMD was identified in uranium waste rock pil
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6324924b91363704a61ea1b13910209d
https://pubmed.ncbi.nlm.nih.gov/24729565
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10
Radon exhalation from phosphogypsum building boards: symmetry constraints, impermeable boundary conditions and numerical simulation of a test case
Autor: José Antonio Rabi, Nivaldo Carlos da Silva
Publikováno v: Journal of environmental radioactivity. 86(2)
Comprehensive understanding of (222)Rn exhalation from phosphogypsum-bearing building material and its accumulation in indoor air is likely to rely on numerical simulation, particularly if transient effects, three-dimensional domains and convection a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d6c8f16c2f104e9fdcca1dab73ba5b3
https://pubmed.ncbi.nlm.nih.gov/16213634
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