Abstract: The accident involving oil spill that occurred on the Brazilian coast in 2019 reached 2,880 km in extension, and more than 200 tons of oily material was removed from coastal environments in the northeast of the country in about five months. In the impact on beach environment there may
Abstract: The quantification of rare earth elements in (Nd-Pr)-FeB alloys used in the production of super magnets is required to ensure the quality of the raw material and a final product with suitable properties. Laser-induced breakdown spectroscopy is attractive to this aim by avoiding the need for decomposition of the
Abstract: Most of the whole-field optical methods for vibration measurement have low sensitivity when the points of the studied surface vibrate with the same amplitude. Those techniques also usually require complex and/or expensive solutions which are difficult to implement in engineering processes when the vibration amplitudes are relatively high. In
Abstract: Phase change materials (PCMs) such as paraffins are widely applied to store thermal energy. PCMs displaying high thermal conductivities are desirable because they crystallize or melt rapidly when the temperature in the environment changes, absorbing or releasing latent heat accordingly. In this work, we experimentally determined the thermal conductivity
Abstract: This study delves into the formulation of an advancedmicrostructure in medium-carbon high silicon spring steel through a series of engineered heat treatments. The microstructure, composed of lower bainite, proeutectoid ferrite, and pearlite, exhibits superior mechanical properties compared to traditional pearlitic steel. Specifically, the novelmicrostructure yields a strength of 870
Resumo: A integridade estrutural é parte vital para o bom andamento de qualquer organização, especialmente quando os riscos operacionais e ocupacionais envolvidos nas operações estão presentes no cotidiano. Seja em plataformas de petróleo, em malhas ferroviárias ou em torres de energia eólica, o monitoramento estrutural tem apresentado resultados significativos tanto
Resumo: Este artigo apresenta um panorama geral do sistema de telecomunicações por fibra óptica em uma perspectiva dos cuidados metrológicos envolvidos em sua operação. Referência: FERREIRA Junior, Antônio Francisco Gentil; TORRES, Fabrício Gonçalves. Aspectos metrológicos nos sistemas de comunicação óptica. Infra News Telecon, v.5, ed.67, 2023. Acesso ao artigo no
Resumo: Atualmente, como alternativa de reforço de elementos de concreto armado, técnicas baseadas no uso de materiais compósitos, tal como a EBR (Externally Bonded Reinforcement, na língua inglesa), aplicada diretamente no substrato de concreto do elemento a ser reforçado com o uso de resinas epoxídicas, têm sido utilizadas. Embora os
Resumo: As mais de 30 diferentes combinações envolvendo tipo, classe, grau de incêndio e propriedade elétrica de calçados exigem um estudo detalhado e rigoroso para tornar mais brando os possíveis riscos e acidentes no trabalho dos bombeiros. Referência: CLEMENTINO, Felipe Cintra; KOVATCH, Pedro Yuri; ZAGO, David Henrique; OLIVEIRA, Nicole Aparecida
Abstract: This paper presents a study on applying machine learning (ML) techniques to analyze a dataset comprising anonymized technical inspections of approximately 4,000 rainwater galleries within the drainage systems alongside Brazilian highways. Periodic inspections to evaluate structural safety while also identifying any existing anomalies for subsequent activities such as instrument
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