Navegando por Autor "SOUZA, José Antônio da Silva"

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Análise de Existência de Percolação em Barragem através da Integração de Métodos de Auscultação e Métodos Geofísicos
(Instituto de Tecnologia, 2019) LOPES, Tiago Pantoja; SOUZA, José Antônio da Silva
Classical methods of dam auscultation, such as water level meters and piezometers, are widely used and provide satisfactory point responses for monitoring. However, these techniques need to be integrated with new methods for evaluating the stability and safety of earth dams. Geophysical methods, such as spontaneous potential and electrical resistivity, emerge as complementary tools to examine the internal and external structure of dams. This work demonstrates the application of these methods at the B6 dam, located in the Paragominas Mining, to identify signs of percolation and internal erosion, which are the main causes of dam failure. The results indicate the need for greater integration between auscultation and geophysical techniques for a more accurate and preventive assessment.
Análise do Desempenho dos Alunos da Rede Pública do Estado de Roraima Utilizando os Dados do IDEB de 2005 a 2017
(Instituto de Tecnologia, 2019) SOUZA, Lee Marcos Cruz de; SOUZA, José Antônio da Silva
The Ideb, launched in 2005, is an educational indicator that links school performance with student performance, through data collected by Prova Brasil and Saeb. The national target for 2021 is to achieve an average of 6.0 in the Ideb, considering the initial years of elementary school. The state of Roraima achieved the Ideb objectives only in 2007 and 2009. This study presents a statistical analysis of student performance in the Ideb from 2005 to 2017 in fifteen municipalities of Roraima, using simple and multiple linear regression models to propose improvements in the state's public education system.
Análise do Processo de Captação, Tratamento e Distribuição de Água na Companhia de Saneamento da Cidade de Benjamin Constant – AM
(Universidade Federal do Pará, 2018) HERMENEGILDO, Eleodoro Rodriguez; SOUZA, José Antônio da Silva
In recent decades, there has been a general recognition that water supply systems for human consumption must not only comply with legal standards but also achieve performance levels that ensure consumer confidence in the provided quality. This study analyzes the stages of abstraction, treatment, and distribution of water by the municipal sanitation company in Benjamin Constant – AM, also assessing the economic valuation of water and its alignment with the privatization model of basic sanitation services. The research examined COSAMA’s compliance with sanitary and environmental regulations and addressed the water supply crisis faced by the city in 2015. The results indicate that the concessionaire has fulfilled its contracts with the public authorities and met social demands, particularly for registered users.
Aplicação de Manufatura Enxuta em uma Montadora de Aparelhos Eletroeletrônicos: Estudo de Caso e Impactos na Produtividade
(Instituto de Tecnologia, 2017) SILVA, Cristiano Magalhães da; SOUZA, José Antônio da Silva
This study addresses the application of Lean Manufacturing philosophy in an electro-electronic appliances assembly plant, aiming to identify and reduce waste in the production process. Tools such as value stream mapping, work cells, Kanban system, and lean internal logistics were employed. The results showed a 37% productivity increase in 2014 and 28% in 2015, along with a reduction in operational costs above 10%. The work emphasizes the importance of standardization, visual management, and employee engagement for sustaining the achieved gains.
Aplicação de SMED em um Processo SMT: Estudo de Caso
(INSTITUTO DE TECNOLOGIA, 2015) UHLMANN, Iraeyanne Retto; LEITE, Jandecy Cabral; SOUZA, José Antônio da Silva; Prof Dr. Walter Barra Junior
The study presents the application of the lean SMED (Single Minute Exchange of Die) tool in an SMT (Surface Mount Technology) process at a multinational company in the Manaus Industrial Pole (PIM). The goal was to reduce the average set up time by over 50%, using the DMAIC methodology (Define, Measure, Analyze, Improve, Control). Results showed a reduction from 31.5 to 12.26 minutes, achieving single-digit times (9.01 minutes), along with improvements in productivity, flexibility, and team morale.
Aterro Sanitário - Proposta Relevante para Reduzir os Lixões nas Cidades de até 100.000 Habitantes
(Universidade Federal do Pará, 2016) LOPES, Enildo Batista; SOUZA, José Antônio da Silva; RODRÍGUEZ, Jorge Laureano Moya
This dissertation presents a study on solid waste management in Brazilian cities with up to 100,000 inhabitants, focusing on the need to replace dumps with landfills. The work addresses the challenges of environmental management and proposes solutions for the adequate disposal of waste, aiming to preserve public health and the environment. The research includes a literature review and suggests the construction of a landfill as a viable alternative to mitigate the negative impacts of dumps, as well as discussing the importance of environmental education and community involvement.
Características Físico-Químicas das Argilas Utilizadas na Indústria de Cerâmica Vermelha no Município de Tabatinga-AM: Um Estudo de Caso em Indústrias do Município
(Universidade Federal do Pará, 2016) SABINO, Artemizia Rodrigues; MAGALHÃES, Edilson Marques; SOUZA, José Antônio da Silva
The red ceramic industry in the state of Amazonas has its main production hub in the city of Iranduba and the metropolitan region of Manaus, with increasing annual demand. The municipality of Tabatinga, despite having few records in the regional industry, has been gaining prominence in the local economy through the production of ceramic bricks, impacting housing quality and generating jobs. This study analyzes the physicochemical properties of the clays used in the manufacture of blocks and tiles, aiming to obtain an optimal composition to enhance the quality of ceramic products. Test specimens were produced with different proportions of white and red clay and subjected to tests for water absorption, porosity, and mechanical resistance. The results showed that the final strength of the material is directly related to the plasticity of the red clay, resulting in a product with a strength exceeding 20 MPa, as required by the ABNT NBR 6220/1997 standard.
Estudo da Formação e Influência do Tricálcio Aluminato (TCA) no Processo de Clarificação do Licor Rico
(Instituto de Tecnologia, 2015) LEANDRO, Mônica Silva Serra; SOUZA, José Antônio da Silva
Tricalcium aluminate hexahydrate (TCA) is a compound used in the Bayer process during green liquor polishing, acting as a filter aid. This study analyzes the formation mechanism of TCA using different liquors, comparing the resulting products to determine the most suitable for filtration. Techniques such as electron microscopy (SEM) and X-ray diffraction (XRD) were employed to evaluate the microstructure of the formed calcium compounds
Estudo da Influência do Óxido de Cálcio na Redução e Estabilidade da Alcalinidade do Resíduo de Bauxita Quando da Adição de Dióxido de Carbono
(Instituto de Tecnologia, 2016) COSTA, Augusto Fernando de Freitas; SOUZA, José Antônio da Silva
"The study investigates the reduction of alkalinity in bauxite residue (red mud) from the Bayer process through the addition of calcium oxide (CaO) and injection of carbon dioxide (CO₂) in a bubbling reactor. The suspension's pH was monitored over 15 months, decreasing from 13 to 8.5, indicating alkalinity stabilization. The formation of stable mineral compounds, such as calcite and dolomite, was confirmed by XRD and XRF analyses. It was concluded that adding 10% CaO is economically viable for alkalinity reduction, enabling residue reuse with lower environmental risk."
Estudo do Fenômeno de Fragilidade do Talão (Talão Mole) na Fabricação de Pneu de Bicicleta
(Universidade Federal do Pará, 2018) SOPRANO, Jerfeson de Barros; SOUZA, José Antônio da Silva
Bicycle tires have been constantly evolving, but despite technological advancements, some manufacturing defects still occur. This study investigates the "soft bead" phenomenon, a defect identified at Levorin, which affects tire quality. The research analyzes the casing manufacturing, shaping, and vulcanization processes to identify the root causes of the defect and propose solutions. The results indicate misalignments and a lack of regulators as the main factors. Implementing improvements in the production process led to reduced waste and increased manufacturing efficiency.
Estudo para Reutilização de Resíduos Sólidos Secos Gerados em Escolas Públicas no Município de Santarém
(Instituto de Tecnologia, 2019) NEVES, Daniela Cristina Pantoja; SOUZA, José Antônio da Silva
The consumerist profile of the world population through industrialized products results in the growth of waste from its packaging. Therefore, environmental degradation becomes a fact that already suffers significant consequences in the global sphere, thus enhancing discussions with the aforementioned issue so that solutions to minimize the problem are idealized and effective. Thus, this study proposes the reuse of Dry Solid Residues (RSS) generated in state public schools of the municipality of Santarém (PA). The research was developed at the two largest public schools in the state of Pará, Brazil. The RSS was collected, related, quantified and weighed for one week, so that the annual estimate of unit, type, mass, gravimetric composition was to be used as a parameter for its reuse. As a result, it was verified the generation of 47 different items of RSS, with 79% packaging related to foodstuffs. The total mass was approximately half a ton with 498.167 kg / year. Regarding the type of RSS, aluminum is shown with 21.159 kg / year, plastic with 468.146 kg / year and glass with 8.862 kg / year. The gravimetric composition was around 4.25% aluminum, 93.97% plastic and 1.78% glass. The generated RSSs have potential for reuse in both teaching materials and utensils for use in school.
Gestão Documental Integrada
(Universidade Federal do Pará, 2016) NASCIMENTO, Ivanete de Oliveira; SOUZA, José Antônio da Silva; LEITE, Jandecy Cabral
This study aims to present the relevance of Strategic Management in the organizational environment, addressing the implementation of an administrative document management system, restricted to the archival area. The proposal aims to demonstrate the effectiveness of integrated management, i.e., the application of strategic management in the structuring of processes related to document management, starting at the Strategic Planning with the formalization of sectoral strategies, supporting the pre-established goals, ending with the achievement of defined goals. The proposal provides effective information in decision-making, the implementation of strategic planning fostering future actions to restructure the internal work process, in this case applied specifically to Archival Management.
Impacto dos Ruídos em Máquinas Injetoras e Métodos de Controle
(Instituto de Tecnologia, 2016) GUIMARÃES, Josinete da Rocha; SOUZA, José Antônio da Silva
The study examines the effects of noise generated by injection molding machines in the Manaus Industrial Park, focusing on impacts on workers' health, such as noise-induced hearing loss (NIHL) and other physical and psychological disorders. Additionally, noise control methods are presented, including the use of ear protectors and environmental management strategies. The research highlights the need for preventive measures and awareness of the risks associated with prolonged exposure to industrial noise.
IMPACTO DOS RUÍDOS EM MÁQUINAS INJETORAS E MÉTODOS DE CONTROLE
(Instituto de Tecnologia, 2016) GUIMARÃES, Josinete da Rocha; SOUZA, José Antônio da Silva
The study examines the impact of noise in injection molding machines, especially in the Industrial Park of Manaus. It discusses the health problems faced by workers exposed to noise, focusing on hearing loss and other physical and psychological disorders. Additionally, solutions for noise control are explored, including the use of Personal Protective Equipment (PPE) and improvements in industrial processes.
INFLUÊNCIA DA ADIÇÃO DE RESÍDUO DE MÁRMORE E GRANITO EM COMPÓSITOS DE MATRIZ POLIMÉRICA REFORÇADOS COM FIBRA DE COCO
(Instituto de Tecnologia, 2016) RODRIGUES, Diego Nery; SOUZA, José Antônio da Silva
This study aimed to produce composites with an unsaturated isophthalic polyester resin matrix, using marble and granite waste as filler and coconut fiber with and without alkaline treatment. The composites were manually fabricated (hand lay-up) and evaluated for physical, mechanical, and flammability properties. The results showed that the addition of waste increased the apparent bulk density, while the coconut fiber influenced water absorption and mechanical properties. The alkaline treatment of the fiber improved adhesion to the matrix, but the composites did not meet the UL94 flammability criteria.
Melhoria de Processo de Produção através da Aplicação de Métodos de Ferramentas da Qualidade em uma Linha de Confecção de Uniformes Industriais
(Instituto de Tecnologia, 2020) COSTA, Roger Roberto Corrêa; SOUZA, José Antônio da Silva
Institutions are subjected to the challenge of surviving in an increasingly competitive and demanding market, resulting from changes in the social, political, political and technological spheres, especially within the Covid-19 pandemic context. Quality appears, in this current scenario, as a timely and relevant theme. This research aimed to implement quality management methods in a line of confections of industrial uniforms to optimize processes. Aspiring to achieve the proposed objectives, a methodological choice was made through a quantitative and qualitative research, through a case study carried out in a company that manufactures uniforms at the Industrial Pole located in the city of Manaus-Amazonas. The survey involved eighteen employees and when asked about knowledge related to quality management, 22% demonstrated knowledge, to the detriment of 78%. About 83% of respondents consider the quality system to be efficient, while 17% disagree. Concerning the opening of the company to new ideas, 55% responded positively, while 45% do not feel at ease. Regarding the factors that cause bottlenecks in the process and rework, 50% reported that the finish does not meet the requirements, 33% reported a failure to insert the push button and 17% reported a failure in embroidery. The application of tools of quality helped to identify bottlenecks and analyze productivity. Solutions have been proposed to increase the efficiency and efficiency of the examined industry, especially in terms of after-sales.
Os Impactos do Arranjo Físico nos Processos de uma Agência Bancária: Um estudo sobre a influência do layout na eficiência e segurança dos processos bancários
(Universidade Federal do Pará, 2016) LIMA, Priscilla Monique Paula; QUARESMA, João Nazareno Nonato; SOUZA, José Antônio da Silva
This study investigates the impacts of physical arrangement on the processes of a bank agency, focusing on the treasury and cashier counters. The research, conducted in a bank agency in Manaus, analyzed issues such as queues, transaction errors, noise pollution, and difficulties in supplying ATMs. The results indicate that, although the agency's area is sufficient for the number of clients, the arrangement of equipment, the scarcity of labor, and the lack of visible signage hinder process efficiency, leading to customer dissatisfaction and slow service. The implementation of a new functional physical arrangement showed significant improvements in service time and customer satisfaction.
Patologias em Instalações Hidro-Sanitárias de Edifícios Residenciais na Zona Centro-Sul de Manaus (AM): Diagnóstico e Terapia
(Instituto de Tecnologia, 2016) VIEIRA, Paulo Cézar Corrêa; SOUZA, José Antônio da Silva
The building installations of cold water, hot water, sewage, and rainwater form an essential system directly interacting with users, where malfunction can negatively impact their physical and psychological well-being. This study aimed to identify and diagnose hydro-sanitary pathological manifestations in vertical residential buildings and propose therapeutic solutions. Interviews were conducted with maintenance managers of nine buildings in the central-south zone of Manaus (AM), followed by technical visits. The findings highlighted common pathologies such as bad odors, water shortages, clogged pipes, noise, and foam return. The study emphasized the impact of design, materials used, execution, and maintenance, underlining the importance of adhering to regulatory recommendations to prevent failures.
Patologias Hidro-Sanitárias em Condomínio Residencial Vertical em Manaus (AM): Diagnóstico e Terapia
(INSTITUTO DE TECNOLOGIA, 2015) VIEIRA, Paulo Cézar Corrêa; RODRÍGUEZ, Jorge Laureano Moya; SOUZA, José Antônio da Silva; Emanuel Negrão Macêdo
This article presents a study on pathological manifestations in sanitary sewage systems in a vertical residential condominium in Manaus. Identified pathologies include bad odors, blockages, noise, and sewage backflow, resulting from non-compliance with technical standards, execution failures, and lack of maintenance. The study proposes therapeutic solutions to mitigate these issues, emphasizing the importance of adhering to norms and building maintenance to ensure user well-being.
Síntese Hidrotérmica de Zeólitas a Partir de Cinza Volante
(Instituto de Tecnologia, 2015) MAUES, Tamiris Cristina de Lima; SOUZA, José Antônio da Silva
Fly ash, an industrial waste from coal combustion, was used as raw material for the hydrothermal synthesis of zeolites. The study investigated various experimental conditions, including reagent concentration (NaOH and Na₂CO₃), temperature, reaction time, and synthesis methods (classic and two-phase). The results showed the formation of hydroxysodalite and cancrinite, with the two-phase method at high NaOH concentration (5 M) proving more efficient, promoting quartz destruction and enhancing zeolite crystallization. The presence of calcite in the ash influenced cancrinite formation. The work contributes to the valorization of industrial waste and environmental impact reduction.