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Browsing 4. Congresso Brasileiro de Metrologia das Radiações Ionizantes (CBMRI) by Author "Lopes, Ricardo Tadeu"

Browsing 4. Congresso Brasileiro de Metrologia das Radiações Ionizantes (CBMRI) by Author "Lopes, Ricardo Tadeu"

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  • 65Zn and 133Ba standardizing by photon-photon coincidence counting 
    Cruz, Paulo Alberto Lima da; Loureiro, Jamir dos Santos; Iwahara, Akira; Delgado, José Ubiratan; Lopes, Ricardo Tadeu (2017)
    The LNMRI/Brazil has deployed a system using X-gamma coincidence technique for the standardizing radionuclide, which present simple and complex decay scheme with X-rays of energy below 100 keV. The work was carried on ...
  • Evaluation of acquisition parameters in microtomography through of analysis of carbonatic rocks 
    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 ...
  • MicroCT parameters for multimaterial elements assessment 
    Araújo, Olga Maria Oliveira de; Machado, Alessandra Silveira; Santos, Thaís Maria Pires dos; Guimarães, Cíntia; Lopes, Ricardo Tadeu (2017)
    Microtomography is a non-destructive testing technique for quantitative and qualitative analysis. The investigation of multimaterial elements with great difference of density can result in artifacts that degrade image ...
  • Sensitometric curve of radiographic films by X-ray fluorescence 
    Gonçalves, Elicardo Alves de Souza; Oliveira, Davi Ferreira de; Anjos, Marcelino Jose dos; Oliveira, Luis Fernando de; Lopes, Ricardo Tadeu (2017)
    Radiographic film exposure is traditionally measured by the transmittance of a beam of light through the film. There are many mathematical and computational models to characterize the curve behavior and its properties, but ...

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