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Browsing Metrologia das radiações ionizantes: Produção Científica by Title

Browsing Metrologia das radiações ionizantes: Produção Científica by Title

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  • Silva, Alexandre Rodrigues da; Dias, Marcelo Sanches; Coelho, João Carlos Martins (2015)
    This is a study of radiated emissions generated by electronic equipment. Two different equipments were tested and their respective results presented, where it was observed that their emissions’ values were worse than ...
  • Carvalho, Rafaella Mendes de; Peixoto, José Guilherme Pereira; Teixeira, Giovane; Cardoso, Ricardo (2017)
    A aplicação dos raios X requer o estudo de seu espectro. Dificuldades intrínsecas do próprio método e de toda a instrumentação necessária para a realização desta prática são relatados. O objetivo foi demostrar a utilização ...
  • Ferreira, Pâmela Zati; Vedovato, Uly Pita; Cunha, Diego Merigue da; Dantas, Noelio Oliveira; Silva, Anielle Christine Almeida; Neves, Lucio Pereira; Caldas, Linda Viola Ehlin; Carrera, Betzabel Noemi Silva; Watanabe, Shigueo; Perini, Ana Paula (2015)
    A técnica de termoluminescência é muito utilizada tanto para dosimetria pessoal quanto para dosimetria de doses altas. Neste trabalho, a técnica de termoluminescência foi utilizada para estudar uma nova matriz vítrea, com ...
  • Gonçalves, Angela Souza; Silva, Fellipe Souza da; Fernandes, Simone Silva; Patrão, Karla Cristina de Souza; Fonseca, Evaldo Simões da; Pereira, Walsan Wagner (2017)
    This study presents the determination of neutron energy fluency from the 241AmBe source. Spectrum determination is based in a Bonner Sphere Spectrometry which the detector without sphere and covered with polyethylene spheres ...
  • Santos, Thaís Maria Pires dos; Machado, Alessandra Silveira; Ferreira, Cíntia Guimarães; Araújo, Olga Maria Oliveira de; Lopes, Ricardo Tadeu (2017)
    X-ray computed microtomography is a powerful nondestructive technique for 2D and 3D structure analysis. However, parameters used in acquisition promote directs influence in qualitative and quantitative results in ...
  • Campos, Luciana Tourinho; Leite, Sandro Passos; Almeida, Carlos Eduardo Veloso de; Magalhães, Luís Alexandre Gonçalves (2017)
    Radiosurgery is a single-fraction radiation therapy procedure for treating intracranial lesions using a stereotactic apparatus and multiple narrow beams delivered through noncoplanar isocentric arcs. The Radiological Science ...
  • Queiróz Filho, Pedro Pacheco de; Silva, Cosme Norival Mello da (2017)
    The National Ionizing Radiation Metrology Laboratory of the Radioprotection and Dosimetry Institute (LNMRI / IRD) has recently acquired a Shepherd 81-14D Radiator. In this work we simulate, using Geant4, the behavior with ...
  • Lopes, Amanda Gomes; Silva, Francisco Cesar Augusto da (2017)
    To update the dosimetry quantity with the international community, Brazil is changing the Individual Dose Hx to the Personal Dose Equivalent Hp(10). A bibliographical survey on the technical and administrative requirements ...
  • Balthar, Mario Cesar Viegas; Amorim, Aneuri de; Santos, Avelino dos; Vilela, Paulo Ricardo T. de; Oliveira, Luciano Santa Rita; Penha, Paulo Eduardo C. De Oliveira; Gonzaga, Roberto Neves; Andrade, Edson Ramos de; Fagundes, Luiz Cesar S.; Vieira, Fábio Gomes; Cardoso, Domingos D’Oliveira; Izidório, Ana Carolina dos Anjos da Cruz; Silva, Thiago de Medeiros Silveira (2017)
    O presente trabalho tem como objetivo apresentar as etapas de implantação e de adequação do Laboratório de Calibração de Monitores Gama (LABCAL) do Instituto de Defesa Química, Biológica, Radiológica e Nuclear (IDQBRN) do ...
  • Kuahara, Lilian Toshie; Correa, Eduardo de Lima; Potiens, Maria da Penha Albuquerque (2015)
    The activimeter, instrument used in radionuclide activity measurement, consists primarily of a well type ionization chamber coupled to a special electronic device. Its response, after calibration, is shown in activity units ...
  • Navarro, Marcus Vinícius Teixeira; Navarro, Valéria Coêlho Costa; Garcia, Igor Fernando Modesto; Ferreira, Mário de Jesus; Macedo, E. M. (2015)
    Além de ser obrigatório, o levantamento radiométrico continua sendo uma necessidade devido a construção de salas cada vez menores, podendo as condições de calibração, a instrumentação e seu uso, produzirem fatores subestimados. ...
  • Correa, Eduardo de Lima; Santos, Lucas Rodrigues dos; Vivolo, Vitor; Potiens, Maria da Penha Albuquerque (2015)
    In this study the mammography calibration qualities were established in a clinical mammography system. The objective is to provide the IPEN instruments calibration laboratory with both mammography calibration methods (using ...
  • Freitas, Bruno Mendes; Martins, Marcelo Marques; Silva, Ademir Xavier da; Mauricio, Claudia Lucia de Pinho (2015)
    The IRD TLD albedo dosemeter measures both incident and albedo neutron component. The incident to albedo ratio is used to take into account the energy dependence of its response. In this paper, the behavior of the IRD ...
  • Silva, Ronaldo Lins da; Almeida, Maria Candida Moreira de; Delgado, José Ubiratan; Poledna, Roberto; Santos, A.; Veras, E. V.; Rangel, J.; Trindade, O. L. (2015)
    The National Laboratory for Metrology of Ionizing Radiation provides gamma sources of radionuclide and standardized in activity with reduced uncertainties. Relative methods require standards to determine the sample activity ...
  • Santos, Anderson Ricardo Leiras dos; Silva, Carlos José da; Delgado, José Ubiratan; Tavares, Desiree Yael de Sena; Silva, Ronaldo L. da; Poledna, Roberto; Iwahara, Akira (2017)
    Uma solução de 65Zn foi padronizada usando o método absoluto de contagem em anticoincidência 4πβ(LS)-γ(NaI) e técnica de extrapolação de eficiência beta pelo Laboratório Nacional de Metrologia das Radiações Ionizantes no ...
  • Tauhata, Luiz; Vianna, Maria Elizabeth Couto Machado; Oliveira, Antonio Eduardo de; Bragança, Maura Julia Câmara da Silva; Ferreira, Ana Cristina de Melo (2015)
    The statistical evaluation of the data of 23 years of the Brazilian Intercomparison Program shows the performance of the 24 Participant Laboratories of the country in the determination of 29 radionuclides in 10600 spiked ...
  • Dantas, Bernardo Maranhão; Lucena, Eder Augusto de; Dantas, Ana Letícia Almeida (2017)
    In vivo monitoring of 131I in human thyroid is often used to evaluate occupational exposure in nuclear medicine facilities and in the case of accidental intakes in nuclear power plants for the monitoring of workers and ...
  • Caldas, Linda Viola Ehlin; Costa, Jhonatha Junio Lopes; Oliveira, Lucas Nonato de; Nascimento, Eriberto Oliveira do (2017)
    In this work, twenty five points located on the ground floor of the Federal Institute of Education, Science and Technology of Goias - IFG - Campus Goiania, were analyzed in morning periods of two Saturdays. The pressure ...
  • Ruzzarin, Anelise; Cruz, Paulo Alberto Lima da; Ferreira Filho, Alfredo Lopes; Iwahara, Akira (2017)
    The 4πβ-γ coincidence counting and CIEMAT/NIST liquid scintillation method were used in the standardization of a solution of 152Eu. In CIEMAT/NIST method, measurements were performed in a Liquid Scintillation Counter model ...
  • Quaresma, Daniel da Silva; Cardoso, Ricardo de Souza; Peixoto, José Guilherme Pereira (2015)
    The operational facility procedures in diagnostic radiology standardization and calibration, through the relation between the X ray tube current and the ionization chamber current in a radiation quality Q, shown the reference ...

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