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Search Results: 1 - 10 of 362734 matches for " José Hamilton Chaves Gorgulho Júnior "
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Reprojeto de um dispositivo eletromecanico em uma abordagem de engenharia reversa integrada ao projeto para manufatura e montagem e à prototipagem rápida Redesign of an electromechanical device in a reverse engineering approach integrated to design for manufacturing and assembly and rapid prototyping
Carlos Henrique Pereira Mello,Fabrício Oliveira de Toledo,Dóris Akemi Akagi,José Hamilton Chaves Gorgulho Júnior
Produ??o , 2011,
Abstract: O tema deste trabalho é o estudo da integra o do projeto para manufatura e montagem com a prototipagem rápida, em uma abordagem de engenharia reversa, como ferramenta de suporte ao reprojeto de produtos. A partir de uma fundamenta o teórica sobre esses conceitos, o presente trabalho visa analisar a aplica o de um modelo para a utiliza o integrada do projeto para manufatura com a prototipagem rápida em uma abordagem da engenharia reversa no processo de reprojeto de produtos eletromecanicos e analisar os resultados da aplica o do referido modelo para a redu o do tempo de produ o/montagem e dos custos de manufatura/montagem no reprojeto desse produto que está, há mais de 30 anos, no mercado. O método de pesquisa empregado foi a pesquisa-a o, uma vez que o pesquisador buscava resolver um problema identificado dentro do objeto de estudo em parceria com a equipe de profissionais da empresa. Os resultados das recomenda es para o reprojeto do produto apresentam uma redu o no tempo de montagem, do número de processos e de componentes e no custo-meta do produto, propiciando a oportunidade de melhorar a sua competitividade no mercado. The purpose of this work was the study of the integration between design for manufacturing and assembly with rapid prototyping, in a reverse engineering approach, such as some tools to support product redesign. Based on a literature review of these concepts, this paper aimed at examining the application of a model that integrates the design for manufacture and assembly with rapid prototyping in reverse engineering approach in the redesign of an electromechanical device. The objective was to analyze the results of the application of this model in order to reduce the time of manufacture/assembly and the cost of assembly in the redesign of the product, which has been marketed for more than 30 years. The research method employed was action-research, because the researcher wanted to address a problem identified within the object of study, in partnership with the company's research team. The results were recommendations for the redesigning of the product, which showed a reduction in the assembly time, in the number of processes and components, and also in the targeted cost of the product - providing the opportunity to improve the competitiveness of the company in the market.
Projeto conceitual de componentes de um forno industrial por meio da integra??o entre a engenharia reversa e o DFMA
Mello, Carlos Henrique Pereira;Guedes, Filipe Natividade;Silva, Carlos Eduardo Sanches da;Gorgulho Júnior, José Hamilton Chaves;Xavier, Amanda Fernandes;
Gest?o & Produ??o , 2010, DOI: 10.1590/S0104-530X2010000300005
Abstract: this study focuses on investigating the integration between reverse engineering (re) and design for manufacture and assembly (dfma) as tools to support the conceptual design of products. from a literature review of these concepts, this research aims to examine the adequacy of a model for the integrated use of dfma and rapid prototyping in an er approach in the design of a new locking system for an industrial oven and recommend improvements in conceptual design of a new lock system. the research method employed was action-research since the aim was to solve a problem identified in the company, object of study, in partnership with the company team. the results of the conceptual design indicate reductions, especially in cost, time to manufacture, and assembly time. it was concluded that the integration model studied was adequate to support the design process of the locking system proposed by the er approach.
Reprojeto de um dispositivo eletromecanico em uma abordagem de engenharia reversa integrada ao projeto para manufatura e montagem e à prototipagem rápida
Mello, Carlos Henrique Pereira;Toledo, Fabrício Oliveira de;Akagi, Dóris Akemi;Gorgulho Júnior, José Hamilton Chaves;Xavier, Amanda Fernandes;
Produ??o , 2011, DOI: 10.1590/S0103-65132011005000059
Abstract: the purpose of this work was the study of the integration between design for manufacturing and assembly with rapid prototyping, in a reverse engineering approach, such as some tools to support product redesign. based on a literature review of these concepts, this paper aimed at examining the application of a model that integrates the design for manufacture and assembly with rapid prototyping in reverse engineering approach in the redesign of an electromechanical device. the objective was to analyze the results of the application of this model in order to reduce the time of manufacture/assembly and the cost of assembly in the redesign of the product, which has been marketed for more than 30 years. the research method employed was action-research, because the researcher wanted to address a problem identified within the object of study, in partnership with the company's research team. the results were recommendations for the redesigning of the product, which showed a reduction in the assembly time, in the number of processes and components, and also in the targeted cost of the product - providing the opportunity to improve the competitiveness of the company in the market.
Growth and Production of Hydroponic Pepper under Salt Stress and Plant Density  [PDF]
Guilherme De Freitas Furtado, Antonio Ramos Cavalcante, Lúcia Helena G. Chaves, José Amilton Santos Júnior, Hans Raj Gheyi
American Journal of Plant Sciences (AJPS) , 2017, DOI: 10.4236/ajps.2017.89151
Abstract: The viability of the use of brackish water in the hydroponic cultivation of vegetables cannot dispense with auxiliary techniques such as water mixing and the use of plant densities. In this sense, the objective of the present work was to analyze the growth and production of sweet pepper, cv. All Big, under hydroponic conditions, under different levels of electrical conductivity of the nutrient solution (1.7, 3.7, 5.7, 7.7, 9.7 and 11.7 dS·m-1) in plants spaced every 0.2 m and 0.3 m. These treatments were distributed in a completely randomized experimental design, analyzed in a 6 × 2 factorial scheme, with five replications. The growth variables were evaluated at 60, 75 and 90 days after sowing and the production variables at the time of harvest; however, the results were submitted to analysis of variance, at a 0.05 probability level. The interaction between the electrical conductivity of the nutrient solution and the density of plants influenced the behavior of the growth and production variables of pepper (All Big). It was verified that the pepper plants had better performance of the biometric variables plant height, stem diameter and number of leaves when cultivated every 30 cm. At the time, in the analysis by plant, the production of pepper fruits was more expressive when spacing of 30 cm was adopted, however, in the tube of six meters, when 20 cm of spacing was used, the number of fruits was on average, 26.38% and 16.40% higher than lower density, in the electrical conductivities 1.7 and 11.7 dS·m-1.
Growth of Pepper under Different Concentration of the Solutions Used in the Hydroponic System  [PDF]
Felipe Guedes de Souza, Guilherme de Freitas Furtado, Antonio Ramos Cavalcante, Lucia Helena Garófalo Chaves, Josely Dantas Fernandes, José Amilton Santos Júnior
Agricultural Sciences (AS) , 2018, DOI: 10.4236/as.2018.98064
Abstract: Water availability is a fundamental condition for sustainable agriculture. However, a satisfactory water condition is not always possible in terms of quantity and quality in certain regions, such as the Brazilian semi-arid region. Thus, the purpose of this extremely important research was to evaluate the growth of cv. All Big with six combinations of wastewater plus saline (WW + SW) and two nutrient solution percentages, in a low-cost hydroponic system. The experiment was carried out in a greenhouse at the Department of Agricultural Engineering at Federal University of Campina Grande. A completely randomized experimental design was used, with treatments arranged in a factorial scheme (6 × 2), with 5 replications, being the treatments composed by the combination of six proportions of wastewater with saline water (50%/50%; 60%/40%; 70%/30%; 80%/20%; 90%/10%; 100% of wastewater) and two nutrient solution concentration (80% and 100%), totalizing 60 experimental units. The biometric variables were analyzed at 55 and 96 days after sowing, namely: plant height (PH), stem diameter (SD), leaf number (LN) and leaf area (LA). The interaction between the concentration of the nutrient solution and the ratio of the saline water with wastewater was influenced in the behavior of peppers (cv. All Big) biometric variables. The nutrient solution prepared at 80% of its normal concentration had better performance in the development of plants when mixed with the proportions of water containing more wastewater. The proportion 30% saline water and 70% wastewater (30/70) with concentration of 80% of the nutrient solution obtained better satisfactory results in the studied biometric variables.
A CONTROLADORIA NAS ORGANIZA ES PúBLICAS MUNICIPAIS: UM ESTUDO DE CASO THE CONTROLLERSHIP IN MUNICIPAL PUBLIC ORGANIZATIONS: A CASE STUDY
Nilson José de Oliveira Júnior,Oswaldo Demósthenes Lopes Chaves Júnior,Mariomar de Sales Lima
Revista Universo Contábil , 2008,
Abstract: Com o propósito de melhorar a gest o pública e oferecer maior transparência nas a es do Poder Executivo Municipal de uma cidade do Estado do Amazonas, foram alterados o nome e as atribui es de um órg o anteriormente denominado de Auditoria Geral do Município, para Controladoria Geral do Município. Considerando as mudan as ocorridas na Administra o Municipal, oriundas das novas diretrizes a ela atribuída, este artigo objetiva identificar se as práticas exercidas pela Controladoria Geral do Município pesquisado se assemelham às fun es de controladoria usualmente encontradas na literatura e avaliar o grau de implementa o dessas fun es. Para consecu o dos objetivos, realizou-se uma pesquisa exploratória, cuja abordagem teve preponderancia qualitativa via estudo de caso. O instrumento de coleta de dados utilizado foi um questionário, respondido pelos principais gestores do órg o em quest o. Os resultados mostram que existe uma distancia entre as fun es de controladoria previstas na literatura e a prática da entidade pública pesquisada. Por outro lado, observa-se que existe certo conhecimento sobre as atividades de controladoria e inten es de mudan a da cultura organizacional. With the aim of improving public administration and offering more transparency in the actions of the Municipal Executive Branch of a city in the State of Amazonas, the name and the duties of a body previously known as General Audit of the Municipal District, was changed to General Controllership of the Municipal District. In view of the changes which have occurred in the Municipal Administration resulting from the new guidelines assigned to it, this article aims at identifying whether the practices performed by the General Controllership of the studied Municipal District are similar to the duties of the controllership usually found in literature and assess the degree of implementation of such duties. To achieve said objectives, an exploratory survey was carried out whose approach features a qualitative focus through a case study. A questionnaire to be filled out by the main managers of the body under study was used to collect data. The results have shown that there is a distance between the duties of the controllership foreseen in literature and the practice of the surveyed public entity. On the other hand, it has been observed that there is certain knowledge about the controllership’s activities and the intentions of change in the organizational culture.
PHENOTYPIC STABILITY OF GUAVA (Psidium guajava L.) WITH EMPHASIS ON FRUIT WEIGHT, PRECOCITY AND CROPPING PERIOD ESTABILIDADE FENOTíPICA EM GOIABEIRA (Psidium guajava L.) COM êNFASE EM PESO DE FRUTO, PRECOCIDADE E PERíODO DE COLHEITA
Edvaldo Evangelista de Souza Júnior,Jo?o Batista Duarte,Lázaro José Chaves
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v32i2.2416
Abstract: The interaction genotypes by environments is of fundamental importance in phenotypic manifestation. In order to verify the phenotypic stability of guava genotypes and to identify groups of accessions with alternative potentials for genetic improvement and for commercial exploitation, 63 accessions from the germoplasm bank of Instituto Agron mico (IAC, Campinas, SP) were evaluated. The evaluation period included six harvests, from 1987 until 1992. The methodology of simple linear regression was used to study phenotypic stability over time. The evaluated traits were fruit weight, crop duration and precocity. The most outstanding accessions were Campos and Creme Arredondada, which showed desirable averages and phenotypic stability for the three traits, besides stable accesses for two traits simultaneously and stable accesses for isolated traits. KEY-WORDS: GE interaction; adaptability; improvement; Mirtaceae; guava. A intera o de genótipos com ambientes é de fundamental importancia na manifesta o fenotípica. A fim de verificar a estabilidade fenotípica de genótipos de goiabeira e identificar grupos de acessos com potenciais alternativos para o melhoramento genético e/ou para a explora o comercial, foram avaliados 63 acessos do banco de germoplasma do Instituto Agron mico (IAC, Campinas, SP). O período de avalia o compreendeu seis safras, de 1987 a 1992. A metodologia de regress o linear simples foi utilizada para estudo de estabilidade fenotípica no tempo. Os caracteres avaliados foram peso de fruto, dura o de colheita e precocidade. Destacaram-se os acessos Campos e Creme Arredondada como de valores médios e estabilidade desejáveis para os três caracteres, além de acessos estáveis para dois caracteres simultaneamente e acessos estáveis para caracteres isolados. PALAVRAS-CHAVE: Intera o GxA; adaptabilidade; melhoramento; Mirtaceae; goiaba.
Queixas musculoesqueléticas e a prática de ginástica laboral de colaboradores de institui o financeira Musculoskeletal complaints and labor gymnastic practice of financial institution employees
José Eduardo Silveira Machado Júnior,Frederico Chaves Seger,Clarissa Stefani Teixeira,érico Felden Pereira
Produ??o , 2012,
Abstract: Este estudo identificou as queixas musculoesqueléticas de 16 trabalhadores de uma institui o financeira, praticantes e n o praticantes de ginástica laboral, por meio do questionário do mapa corporal. Para a análise dos dados foi utilizado o teste qui-quadrado com nível de significancia de 5%. O grupo da ginástica laboral mostrou resultados positivos apenas para a análise da reg o cervical (p = 0,049), sendo as queixas nesta reg o mais leves (44,44%; n = 4) quando comparadas às apresentadas pelos indivíduos n o praticantes de gnástica laboral. Esses trabalhadores, por sua vez, apresentaram queixas mais intensas como as moderadas (intensidade 3) (42,86%; n = 3) e consideráveis (intensidade 4) (57,14%; n = 4). As práticas em ginástica laboral, realizadas duas vezes na semana, n o foram suficientes para diferenciar a intensidade das queixas musculoesqueléticas na maioria das regi es corporais analisadas, indicando a necessidades de adequa o das atividades realizadas visando maior efetividade em termos musculoesqueléticos. This research identified the musculoskeletal complaints of 16 financial institution workers, inserted and not inserted in labor gymnastic activities, through mean body map questionnaires. The Chi-Square test was applied to data analysis with 5% significance level. The labor gymnastic group showed positive results only for the cervical regon analysis (p = 0.049). In the cervical regon, the labor gymnastic group showed less intense complaints (44.44%; n = 4), in contrast to the non-gymnastic group. These workers, in turn, more intensely complained as moderate (intensity 3) (42.86%; n = 3) and considerable (intensity 4) (57.14%; n = 4). Labor gymnastic practices, performed twice a week, did not bring significant differences in musculoskeletal complaints in the analyses of most body regons. These results indicate the need for adjustments in the activities so that greater effectiveness in the musculoskeletal situation can be achieved.
Marcapasso cardíaco artificial: considera??es pré e per-operatórias
Ramos, Gilson;Ramos Filho, José;Rassi Júnior, Anis;Pereira, Edísio;Gabriel Neto, Salustiano;Chaves, Enio;
Revista Brasileira de Anestesiologia , 2003, DOI: 10.1590/S0034-70942003000600015
Abstract: background and objectives: technological medical diagnosis advances in cardiology have markedly increased indications for temporary or permanent artificial cardiac pacemakers (pm). this means that, in addition to cardiologists, other specialists have become involved in the handling of these devices. when pm patients undergo surgery, anesthesiologists? participation may be decisive for the success of the procedure. this review aimed at familiarizing anesthesiologists with major clinical indications and operation of these devices, as well as with pm-related pre and intraoperative cares. contents: classification, operation, and major clinical indications for pm implants are covered. in addition, primary pm-related pre and intraoperative cares required for success are explained. conclusions: basic understanding of pm operation and indications should be part of anesthesiologists? daily practice. hence, handling and indication of temporary pm broadens these specialists? scope, in addition to saving lives in emergency situations. electric cautery should be avoided in artificial cardiac pacemaker patients.
Fitomassa de Girassol Cultivado Sob Aduba o Nitrogenada e Níveis de água Disponível no Solo
Jo?o Tadeu de Lima Oliveira,Lucia Helena Garófalo Chaves,Vinícius Batista Campos,José Amilton Santos Júnior
Revista Brasileira de Agricultura Irrigada , 2012, DOI: 10.7127/rbai.v6n100077
Abstract: O nitrogênio é o nutriente mais requerido pelas plantas por assumir fun es importantes no metabolismo vegetal. Na cultura do girassol, sua deficiência causa desordem nutricional, sendo o nutriente que mais limita a produ o. Além disso, a escassez de água limita o crescimento e a produ o das plantas. Por isto, o trabalho foi desenvolvido na área experimental da Unidade Acadêmica de Engenharia Agrícola da Universidade Federal de Campina Grande, no período de mar o a junho de 2010, objetivando-se avaliar a fitomassa do girassol cv. EMBRAPA 122/V-2000 submetido às doses de nitrogênio (0; 60; 80 e 100 kg ha-1) e níveis de água disponível no solo (55; 70; 85; e 100%). O delineamento experimental utilizado foi inteiramente casualizado, analisado em esquema fatorial (4 x 4) com três repeti es totalizando 48 unidades experimentais. As plantas de girassol foram cultivadas em vasos com capacidade para 35 L preenchidos com solo classificado como Luvissolo e mantidas sob irriga o diária. Por ocasi o da colheita, avaliaram-se as variáveis: Fitomassa fresca e seca da parte aérea, do caule, das folhas e do capítulo sem aquênios, e o teor de águana parte aérea. A aduba o nitrogenada n o influenciou a produ o de fitomassa fresca e da fitomassa seca do girassol cv. EMBRAPA 122/V-2000, com exce o da fitomassa seca de caule. Todas as variáveis avaliadas apresentaram comportamento linear crescente em fun o da água disponível do solo. A intera o entre a dose 80 kg ha-1de N e o nível de 100% de água disponível no solo foi adequada para os melhores resultados da produ o de fitomassa
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