Artigos

URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/219

Artigos produzidos de convênios e parcerias com IES

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A otimização de filtros passivos de harmônicos em sistemas elétricos industriais
(Universidade Federal do Pará, 2015) LEITE, Jandecy Cabral; ABRIL, Ignacio Pérez; AZEVEDO, Manuel Socorro Santos; TOSTES, Maria Emilia de Lima; BEZERRA, Ubiratan Holanda; NASCIMENTO, Manoel Henrique Reis
This article presents an analysis of the evolution of optimization formulations for passive harmonic filters in industrial power systems, highlighting the transition from single-objective to multi-objective formulations. Optimization methods such as Sequential Quadratic Programming (SQP), Simulated Annealing (SA), Differential Evolution (DE), Artificial Neural Networks (ANN), Particle Swarm Optimization (PSO), and Genetic Algorithms (GA), among others, are discussed. The work shows how formulations have evolved to better represent the complexity of the problem, considering more comprehensive objective functions and constraints.
A Utilização da Automação como Solução dos Problemas Ergonômicos em Prensas Hidráulicas de Estampagem de Peças Metálicas
(Universidade Federal do Pará, 2010) OLIVEIRA, Macêdo Santos de; SILVA, José Antônio S.; DELON, José Alain; NASCIMENTO, Manoel Henrique Reis
This article presents a study on the use of automation in a metal parts factory that uses hydraulic presses for stamping. The goal is to reduce the number of operator absences due to occupational diseases, such as RSI/WMSD, caused by repetitive efforts and inadequate postures. Automation was implemented to improve the ergonomic conditions of workstations and increase production. The study shows that automation reduces costs related to absences and increases production efficiency.
Acúmulo de Materiais Orgânicos nas Estruturas Navais dos Terminais Hidroviários de Manicoré, Parintins, Manacapuru e Humaitá no Estado do Amazonas
(Universidade Federal do Pará, 2014) HARTZ, Alessandra Guimarães; MENDES, Ronaldo Lopes Rodrigues; ROCHA, Gilberto de Miranda; LEITE, Jandecy Cabral; NASCIMENTO, Manoel Henrique Reis
This study aimed to diagnose the causes of the recurring problem of organic material accumulation in the naval structures of the waterway terminals in Manacapuru, Humaitá, Parintins, and Manicoré, in the state of Amazonas. The study identified that the problem occurs because the project designs do not consider the fluvial water system and the geography of the region. During the flood season, the accumulation of organic matter in the terminal structures causes environmental and operational damage. The methodology used was bibliographic and documentary research, with a case study. It is concluded that an efficient and low-cost solution is needed to mitigate the effects of organic material accumulation.
Algoritmo para la Creación del Modelo Alámbrico de un Techo Fijo para Tanque de Almacenamiento de Combustible en Forma de Domo Geodésico Esférico
(Universidad Central “Marta Abreu” de Las Villas, 2015) CAMPOS PÉREZ, Yamilí Santiago; BLANCO, Ricardo Alfonso; LEITE, Jandecy Cabral; NASCIMENTO, Manoel Henrique Reis
This paper presents an algorithm for the creation of the wireframe model of a spherical geodesic dome, used as a fixed roof for fuel storage tanks. The geodesic dome is a structure composed of bars and nodes arranged along the edges and vertices of a polyhedron inscribed on a spherical surface. The proposed algorithm is based on the review and compilation of information from various researches, aiming to generate a geometric model for further resistance analysis by the finite element method. The work details the procedure and geometric expressions used, and presents a computer program developed to validate the algorithm.
An Approach for Life Cycle Assessment of Electricity Generation at Gas-HFO Internal Combustion Engines in a Central Station
(Universidad Central “Marta Abreu” de Las Villas, 2014) TOUSET, Juan-Pedro Hernández; LEITE, Jandecy Cabral; RICO, Iván-Leandro Rodríguez; FRANÇA, Alcimar de Jesus; DOMINGUEZ, Elena-Rosa; GUEDES, Oiama de Assis; JIMENEZ, Italo-Jorge Tavares; ARTILES, Arnaldo Herrera; GIL, Maylier Pérez; NASCIMENTO, Manoel Henrique Reis
This paper applies the Life Cycle Assessment (LCA) as an assessment tool to quantify the environmental impacts associated with electricity generation by internal combustion engines. Steps, resources, and/or supplies that have the greatest impacts during the life cycle of electricity generation are identified to contribute with measures of cleaner production in companies with similar power generation. The goal of this study is to evaluate the environmental impacts associated with the production of 1552 kWh of electricity by gas-HFO internal combustion engines, considering a scenario that responds to the use of lubricating oil, oily water treatment, collection, and transportation of sludge. The study of additives and contaminants from lubricating oil is included, taking into account that it is a complex task for life cycle inventory considering limitations to get data.
Análise ergonômica aplicada aos processos industriais relacionada a trabalho em ambientes à altas temperaturas
(Universidade Federal do Pará, 2010) PINHEIRO, Jaqueline Silva de Souza; FARIAS, Marlene Araújo de; LEITE, Jandecy Cabral.; NASCIMENTO, Manoel Henrique Reis
The major industry sector in Manaus is represented by electro-electronic industries, but only a part of them has a suitable ergonomically workplace. In the case of metallurgic industries, their working conditions are not suitable due to a series of factors, such as exposure to high temperatures, which cannot be cooled, creating adverse conditions like thermal shock and fatigue. This paper's general goal is to describe the importance of preserving workers' mental and physical health in the workplace through ergonomics. The study presents improvement suggestions and advice that may contribute to solving ergonomic problems related to workers' health.
Análise ergonômica de um posto de trabalho numa linha de produção utilizando o método NIOSH – um estudo de caso no Polo Industrial de Manaus
(Universidade Federal do Pará, 2014) AGAHNEJAD, Payman; LEITE, Jandecy Cabral; OLIVEIRA, Roberto Celio Limão de.; NASCIMENTO, Manoel Henrique Reis
This article is aimed at making an ergonomic analysis of the job on an assembly line of the compressor based on real data production, using the method of NIOSH. Through research, analysis, and reporting procedures, it became possible to examine suggestions for reducing the problem that was addressed in this study. The main objective is to analyze the situation of the ergonomic product line focusing on the biomechanics of the work. The reason is because of the large outflow of workers due to health problems related to ergonomics, as one of the main problems they face is with handling and moving heavy loads, is the back pain, drifting in acute and chronic problems. The results allowed to draw conclusions that should have health care worker in the manufacturing environment and whose recommendation led to the elucidation of some biomechanical problems found.