A5076902652- Geophysical and Geoelectrical Methods
- Fault Detection and Control Systems
- Advanced Control Systems Optimization
- Remote-Sensing Image Classification
- Pesticide Residue Analysis and Safety
- Sensor Technology and Measurement Systems
- Geography and Environmental Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Cardiac pacing and defibrillation studies
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Geophysical Methods and Applications
- Geochemistry and Geologic Mapping
- SARS-CoV-2 detection and testing
- Agricultural and Food Sciences
- Wireless Power Transfer Systems
- Artificial Intelligence in Law
- Cardiac Arrhythmias and Treatments
- Advanced Control Systems Design
- Neural Networks and Applications
- Seismic Waves and Analysis
- Energy Harvesting in Wireless Networks
- Artificial Intelligence Applications
- Pigment Synthesis and Properties
- Geothermal Energy Systems and Applications
- Food Industry and Aquatic Biology
Universidade de Brasília
2000-2022
Associação Brasileira de Águas Subterrâneas
2019
Universidade Federal de Pelotas
2016
Instituto Federal de Educação, Ciência e Tecnologia de Santa Catarina
2015
Universidade Federal de Campina Grande
2012-2014
Centro de Inovação, Empreendedorismo e Tecnologia
2014
University Gama Filho
2013
Universidade de São Paulo
2012
Instituto de Geofísica y Astronomía
2010
Hospital Universitário da Universidade de São Paulo
2002
Radiometric precision is difficult to maintain in orbital images due several factors (atmospheric conditions, Earth-sun distance, detector calibration, illumination, and viewing angles). These unwanted effects must be removed for radiometric consistency among temporal images, leaving only land-leaving radiances, optimum change detection. A variety of relative correction techniques were developed the or rectification same area, through use reference targets whose reflectance do not...
Streaming potentials can be generated when geologic porous media are subjected to pumping tests. For a homogeneous medium, theory predicts that input and output points for water circulation generate field responses in the form of electric equivalent those produced by current sources externally driven power source. We evaluated tank experiments showing this assumption is valid common geophysical scenarios used determine charge density media, key parameter interpreting electrokinetic...
Speckle noise (salt and pepper) is inherent to synthetic aperture radar (SAR), which causes a usual noise-like granular aspect complicates the image classification. In SAR analysis, spatial information might be particular benefit for denoising mapping classes characterized by statistical distribution of pixel intensities from complex heterogeneous spectral response. This paper proposes Probability Density Components Analysis (PDCA), new alternative that combines filtering frequency histogram...
Despite their importance in the evaluation of petroleum and gas reservoirs, measurements self-potential data under borehole conditions (well-logging) have found only minor applications aquifer waste-site characterization. This can be attributed to lower signals from diffusion fronts near-surface environments because are made long after drilling well, when concentration already disappearing. Proportionally higher arise streaming potentials that prevent using simple interpretation models...
A água doce, recurso natural de extrema importância para vida, é um bem escasso devido à irregularidade da sua distribuição espacial e às dificuldades acesso população ao recurso.Diante deste cenário surgiram diversas iniciativas mundiais na busca por indicadores que auxiliem gestão dos recursos hídricos
Objetivo: identificar a percepção do paciente traumatológico acerca da assistência prestada. Método: trata-se de uma pesquisa descritiva, cujos dados foram coletados entre agosto e outubro 2015, abordando-se oito pacientes por meio entrevista semiestruturada. Analisou-se as informações colhidas análise conteúdo temática, criando-se três categorias: experiência com lesão, frente hospitalização recebida pela equipe saúde. Resultados: identificou-se positiva demonstração surpresa em relação ao...
Abstract An analysis was made of robust stability by estimating the confidence region for roots characteristic Equation a process, which uses typical PID controller with auto‐tuning. From standard statistical concepts, considerations on distance associated chi‐square distribution were taken into account when establishing methodology, enabled to be found. The results show all eigenvalues equation, thus demonstrating ability procedure. can updated online, enabling system continuously...
Este trabalho apresenta o estudo e desenvolvimento de um conversor wireless para carregar supercapacitores, que utiliza redes imitância sintonizar primário secundário transformador com baixo coeficiente acoplamento. A frequência operação do é a ressonância das e, nesta condição, rede opera como V/I (a fonte tensão na entrada convertida em corrente saída). alimenta amplitude constante. no assegura comutação suave retificador constante baixa ondulação saída toda faixa da carga. Conversores...
This work discusses the optimization and characterization of an efficient inductive power transfer device in kilowatt range based on state art knowledge for such systems. A is designed using tools as finite element method (FEM) software analytical design rules. Finally, experimental results demonstrate achieved performance.
Temperature logging equipment made in Brazil, for continuous geothermal measurement is presented. Digital and analog circuits a temperature probe with an interchangeable negative coefficient (NTC) thermistor were developed. The electronic are linked by long three wire lead that makes feasible to compensate the cable effect on measured values. Cable turned winch at surface where electronics fixed. Coupled sensor through there 22 bits resolution ADC delta-sigma converter MCP3551 controlled...
A study of Parallel Self-Organizing Map (Parallel-SOM) is proposed to modify for parallel computing environments. In this model, the conventional repeated learning procedure modified learn just once. The once manner more similar human and memorizing activities. During training, every connection between neurons input/output layers considered as an independent processor. way, all elements matrix are calculated simultaneously. This synchronization feature improves weight updating sequence...
Este trabalho de instrumentacao em Geofisica Nuclear teve como objetivo principal, o desenvolvimento um prototipo espectrometro gama com analisador multicanal, desde amplificador espectroscopico ate seu firmware . O coracao da parte digital foi microcontrolador 8 bits ATMEL (AT89S8252). Todos os circuitos foram feitos e montados no Laboratorio Instrumentacao (LIGA). O software do completamente desenvolvido linguagem ANSI-C usando compilador Small Device C Compiler (SDCC) versao 2.4.8...
The devices were developed to realize<br>spontaneous and induce voltage measurement on the<br>ground. In both case we used a multiwire cable with<br>multiple inputs along the length that becomes<br>possible conect it in six stainless electrodes fixed in<br>the ground at same time. An automatic sequence<br>digital system controlled by pushbutton touch allows<br>to couple sequentially electronic DC<br>voltmeter with autozeroing circuit based...