Talks

EGU26 General Assembly

Vienna, Austria • May 07, 2026

Presented work: MIRS and XRF Data Fusion for Improving Soil Fertility Attributes Prediction
Authors: João Lopes; Magdeline Vlasimsky; Alessandro Migliori; Gerd Dercon; Kalliopi Kanaki; Fábio Melquiades; Avacir Andrello
Type: Poster Presentation

II Workshop do Programa de Pós-Graduação em Física da UEL

Londrina, Brazil • December 16, 2025

Presented work: 'Análise Espectral Multimodal para Avaliação de Fenômenos Erosivos em Solos Agrícolas' (Multimodal Spectral Analysis for Evaluating Soil Erosion in Agricultural Areas)
Authors: João M. F. Lopes; Fábio L. Melquiades; Avacir C. Andrello
Type: Oral Presentation

VII Workshop of the Graduate Program in Physics

Curitiba, Brazil • December 10, 2025

Presented work: Bayesian Calibration of XRF Data for Geological Applications
Authors: João M. F. Lopes; Daljeet S. Gahle; Alessandro Migliori; Kalliopi Kanaki
Type: Oral Presentation

V INCT-FNA Symposium

Niterói, Brazil • December 03, 2025

Presented work: Calibration Transfer from HPGe to NaI(Tl) Detectors for Radionuclides Quantification in Soil
Authors: João M. F. Lopes; Fábio L. Melquiades; Rodrigo O. Bastos; Angelo Z. Neto; Avacir C. Andrello
Type: Poster Presentation

'Semana da Física para o Ensino Médio' (High School Physics Week)

Londrina, Brazil • August 01, 2025

Presented work: 'O Físico como Pesquisador' (The Role of the Physicist as a Researcher)
Authors: João M. F. Lopes
Type: Oral Presentation

EGU General Assembly 2025

Vienna, Austria • May 02, 2025

IV Spring Meeting of the Brazilian Physical Society

Belo Horizonte, Brazil • September 27, 2024

Presented work: Optimizing Radiation Detection: Python-Based Methodologies for CZT Detectors
Authors: João M. F. Lopes; Fábio L. Melquiades; Avacir C. Andrello
Type: Poster Presentation

IV INCT-FNA Symposium

Niterói, Brazil • April 24, 2024

Presented work: Spectral Deconvolution Approach for Beryllium-7 Detection: Evaluating Soil Redistribution with NaI(Tl) Detectors
Authors: João M. F. Lopes; Fábio L. Melquiades; Avacir C. Andrello
Type: Oral Presentation

XXIII Jorge André Swieca Summer School on Experimental Nuclear Physics

Salvador, Brazil • February 24, 2024

Presented work: Mid-Level Data Fusion with Gamma and X-Rays Spectra Applied to Soil Redistribution Evaluation: A Novel Approach
Authors: João M. F. Lopes; José V. Ribeiro, Fábio L. Melquiades; Avacir C. Andrello
Type: Poster Presentation

VII International Conference on Environmental Radioactivity

Sevilla, Spain • September 18, 2023

Presented work: Exploratory Analysis of Gamma Spectrometry and EDXRF Applied to Soil Redistribution Evaluation in Agricultural Areas
Authors: João M. F. Lopes; Fábio L. Melquiades; Avacir C. Andrello
Type: Oral Presentation

VI Winter School of Chemometrics

Brasilia, Brazil • July 28, 2023

Presented work: Análise exploratória de amostras de solo por espectrometria gama para identificação de Berílio-7
Authors: João M. F. Lopes; Fábio L. Melquiades; Avacir C. Andrello
Type: Poster Presentation

III INCT-FNA Symposium

Niterói, Brazil • November 08, 2022

Presented work: Elemental analysis of saliva samples affected by peri-implant diseases using X-ray fluorescence
Authors: João M. F. Lopes; Avacir C. Andrello; Italo J. V. Netto
Type: Poster Presentation