Published:
This publication is about the chemical coupling of phase oscillators.
Recommended citation: Silva, L. M., Pinto, P. H., Lopes, J. M. F., & Karia, F. T. (2019). CÂMARA DE NUVENS: UMA PROPOSTA EXPERIMENTAL DIDÁTICA. In Contradições e Desafios na Educação Brasileira 2 (1st ed., pp. 202-210). Atena Editora.
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Published:
This publication is about the study of an agricultural mega-parcel in northern Paraná..
Recommended citation: BARBOSA, GRAZIELA M.C. ; MARTINS, B. H. ; COLOZZI FILHO, A. ; BERTAGNOLI, B. G. P. ; OLIVEIRA, J. F. ; LONDERO, A. L. ; ANDRELLO, A. C. ; SCHNEIDER, F. J. A. ; MENONCIN, A. S. ; LOPES, J. M. F. In Manejo e Conservação de Solo e Água (1st ed., pp. 201-254). SENAR.
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Published in Journal of Environmental Radioactivity, 2024
This study combines gamma-ray and X-ray fluorescence spectrometry with principal component analysis to quantify soil erosion and deposition rates in a Brazilian agricultural plot.
Recommended citation: Lopes, J. M. F., Ribeiro, J. V., Andrello, A. C., & Melquiades, F. L. (2024). Gamma-rays and X-rays spectrometries applied to evaluate soil redistribution. Journal of Environmental Radioactivity, 278, 107479.
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Published in Radiation Physics and Chemistry, 2024
This work applies spectral deconvolution to NaI(Tl) gamma spectra to quantify Beryllium-7 in soils, validating it as a lower-cost method for evaluating short-term soil redistribution.
Recommended citation: Lopes, J. M., Melquiades, F. L., Bastos, R. O., de Oliveira, J. F., Barbosa, G. M., & Andrello, A. C. (2024). Spectral deconvolution approach for Beryllium-7 detection: Evaluating soil redistribution with NaI (Tl) detectors. Radiation Physics and Chemistry, 225, 112153.
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Published in Radiation Physics and Chemistry, 2025
This study demonstrates that fusing X-ray fluorescence and gamma-ray spectrometry data with machine learning enhances the prediction of key soil fertility attributes, offering a more precise and efficient alternative to traditional methods.
Recommended citation: Ribeiro, J. V., Lopes, J. M. F., Andrello, A. C., de Oliveira, J. F., Barbosa, G. M., Bastos, R. O., & Melquiades, F. L. (2025). XRF and gamma-ray data fusion for predicting key soil fertility attributes. Radiation Physics and Chemistry, 234, 112750.
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Published in Radiation Physics and Chemistry, 2025
This study analyzes the chemical composition of the first post-drought rainfall in southern Brazil, revealing high concentrations of crustal and anthropogenic elements linked to wildfires.
Recommended citation: Birelo, L. M., de Franca, A. M., Lopes, J. M. F., Andrello, A. C., & Jussiani, E. I. (2025). Analysis of the first rain after a prolonged drought in southern Brazil using TXRF. Radiation Physics and Chemistry, 113117.
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Published in Radiation Measurements, 2025
This study demonstrates the viability of employing low-resolution NaI(Tl) detectors to detect and quantify 7Be in soil samples by employing the window-technique.
Recommended citation: Borsoi, Bruno Winicius, Bastos, Rodrigo Oliveira, Neto, Angelo Zanona, Rodríguez, Duvan Gil, Lopes, João Marcos Fávaro, Andrello, Avacir Casanova, Muller, Marcelo Marques Lopes, Pott, Cristiano André, Melquiades, Fábio Luiz (2026). 7Be measurements in agricultural soil using a low resolution NaI(Tl) detector. Radiation Measurements, 107591.
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Published in Journal of Environmental Radioactivity, 2026
This study demonstrates the viability of employing TTFA to convert NaI(Tl) spectral response into HPGe-like to increase accuracy on radionuclides quantification.
Recommended citation: Lopes, João M. F., Melquiades, Fábio L., Bastos, Rodrigo O., Neto, Angelo Z., Andrello, Avacir C. (2026). Calibration transfer from HPGe to NaI(Tl) detectors for radionuclides quantification. Journal of Environmental Radioactivity, 107885.
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Published in Chemometrics and Intelligent Laboratory Systems, 2026
This study demonstrates the application of orthogonal Bayesian regression to calibrate XRF data considering CRM uncertainties to increase accuracy in low-concentration measurements.
Recommended citation: Lopes, J. M. F., Gahle, D. S., Migliori, A., Kanaki, K.. Chemometrics and Intelligent Laboratory Systems, 105662.
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Published in Applied Radiation and Isotopes, 2026
This article describes a study employing a low-resolution NaI(Tl) detector for measuring Be-7 activity concentrations in urban areas.
Recommended citation: Neto, A. Z. N.; Bastos, R. O.; Lopes, J. M. F.; Borsoi, B. W.; Ikeoka, R. A.; Melquiades, F. L.; Neri, V. da S. (2026). Be-7 Measurement in an Urban Area Using a Low-Resolution Gamma Spectrometer. Applied Radiation and Isotopes, 112529.
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Published in Journal of Environmental Radioactivity, 2026
This study analyzes 191 pottery sherds from the Ventarrón-Collud Archaeological Complex (Lambayeque, Peru), including Huaca Zarpán, Huaca Collud, Arenal, and Huaca Ventarrón using EDXRF, XRD, FTIR, GRS, multivariate analysis, and digital photomicrography.
Recommended citation: Desanti, C. S. A., Appoloni, C. R., Ikeoka, R. A., Suñer, M. M. A., Fagundes, M., Silva, F. A., ... & Samulewski, R. B. (2026). Archaeometric study of archaeological pottery from the Ventarrón-Collud Complex–Lambayeque, Peru: A multi-technique approach using EDXRF, FTIR, XRD, Gamma Spectrometry, and Principal Component Analysis. Radiation Physics and Chemistry, 113926
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Published in Soil Science Society of America Journal, 2026
This study explores the synergistic application of energy dispersive x-ray fluorescence (EDXRF) and gamma-ray spectrometry (GRS) raw spectra to characterize soil redistribution.
Recommended citation: Lopes, J. M. F., Ribeiro, J. V., Melquiades, F. L., de Oliveira, J. F., Barbosa, G. M. C., & Andrello, A. C. (2026). Data fusion of gamma and x-ray spectra via Common Dimensions for soil erosion characterization. Soil Science Society of America Journal, 90, e70268.
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Undergraduate course, University 1, Department, 2014
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Workshop, University 1, Department, 2015
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