845 resultados para controle estatístico de qualidade
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This study examines some characteristics of the contemporary reality and its influence on the dynamics of the organizational activities, in particular, related to the quality management. Discusses capitalist logic of maximization of profits that has been sophisticated in face of new scenarios that arise with society evolution. It also proposes a reflection on the philosophies and formats of management that fits with the desire to meet the needs of society through the expansion of quality - now a reference for the production processes and management systems. The work highlights the relations between communication and quality, pointing them as fundamental to the use of fissures on the evolution of the capitalist system in developing programs, philosophies and management systems. The intention is to turn able ways to contemplate the needs and interests of the largest number of public and variables in a different relation than the usual, in which a few wins and many lose
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Delivering to the customers a product or service with the expected quality associated to the huge competitiveness that exists in the market nowadays, has been making organizations increasingly focus on quality planning using techniques which are directed towards the continuous improvement process and production optimization. Thus, this paper aims to improve a machining process using the techniques of experimental design to the optimization and this also includes the analysis of the measurement system. For this purpose, the alloy Nimonic 80A, a nickel base superalloy, was used in the process due to its widespread use for high temperatures, applying this study the robust method proposed by Genichi Taguchi, determining the influence of the factors considered input variables, cutting speed, feed rate, depth of cut, type of tool, lubrication, and material hardness, in the output or response variable, surface roughness, concluding with the use of Taguchi orthogonal array L16 and by analysis of ANOVA that the factor feed rate is significant and offers greater effect on the response variable studied, should be set to 0,12mm/rev. Moreover, the factor type of tool has more influence on the process when compared to other factors, being CP250 the one more suitable to the process. Lastly, the interaction feed rate x cutting speed provides greater significance in the process regarding to surface roughness variable, being the best match between them 0,12mm/rev to the feed rate and 90m/min to the cutting speed. In order to evaluate the measurement system, it was applied the repeatability and reproducibility method (R&R), through which we saw that the system needs improvement (R & R = 88.04% >>> 30%) as the value found in the study was well above compared to the one that classifies the system as inappropriate
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The main purpose of this research is to raise, through lab rehearsals, the geometric properties of some oxisols from the region of Vale do Paraíba as well as comparing them to demands prescribed by Technical Specifications ESP08/05 of the Road Department of the State of Paraná, for sub-base or fine grained lateritic soil base (SAFL) and in the Technical Specification ET-DEP00/006 of the Road Department of the State of São Paulo (DER/SP) for subbase or crushed stone base. According to the results that were obtained it will be feasible to appraise the usage of these sorts of soils in structure layers of low-weight traffic pavements
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With the growth of the demand on electric energy in the last decades, the urban distribution and transmission systems have experienced a bigger necessity to improve on the substations, the automation procedures and techniques on the operation maneuvers of such systems, in a sense that better attends the quality levels, availability, continuity and operational reliability. In this way, the objective of the present paper is to perform a study of protection and control on an electrical industrial system involving the procedures of digitizing and maneuvers automatism utilizing operational techniques and other pertinent information used in a typical high-voltage Industrial Electrical System. Analysis were made on short-circuits to specify the main components of the 138 [kV] substation, in addition, there were used digital MiCOM relays to make the protection of the present elements. With that, a program was developed to allow the user to monitor the condition of circuit-breakers through a supervision screen being able to simulate some kinds of faults, as well as observing the characteristics of each device. This way, the importance of having a fast and reliable system that ensures the equipment’s protection and the industrial process continuity due to faults on the electrical system is noticeable. It’s important to highlight that all this digitizing was mainly favored by the development of digital technology on the last years, mainly on microelectronics, also with the appearance of supervision gadgets allowing the development of complex systems in supervision and electric energy control
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The market has forced companies to maintain high levels of control over their processes , ensuring a product or service quality to its customers . This study comes in the issuance and registration carried out in a company of e-commerce , which is showing problems with the values of weights and dimensions used in the cases cited . The need to eliminate wasteful spending freight caused by shipment of products weighing more than the reality, and to increase the reliability of the information used in the management of processes led to the planning of this project . This work focuses on the development of a PDCA cycle to work in the identification and correction of the causes of the problem , in order to neutralize the current complications and ensure that the problem does not appear again. To aid the mapping of the processes involved , identifying the causes of the problem and implementation of the proposed improvements were used quality tools such as flowcharts , Ishikawa diagrams , Pareto diagrams , and applied statistics
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água que abastece uma cidade se não for tratada pode tornar-se importante veículo de transmissores de doenças. O controle da qualidade é uma medida que visa, principalmente, garantir a saúde da população. O objetivo desta pesquisa foi avaliar a qualidade da água distribuída pelo sistema de abastecimento da cidade de Santa Lúcia – SP. A água proveniente desse sistema chega até as residências e, muitas vezes, é consumida sem nenhum tratamento doméstico complementar. A cidade de Santa Lúcia é abastecida por três poços profundos (P2, P3, e P4). Com o intuito de avaliar a qualidade da água captada desses poços e distribuídas para consumo humano foram coletadas amostras diretamente dos poços e de um ponto de consumo nas áreas abastecidas por cada poço. Foram feitas três coletas em cada ponto, em três diferentes épocas do ano. Realizaram-se análises físico-químicas e bacteriológicas em todas as amostras. As análises bacteriológicas foram feitas para determinação da presença de coliformes totais, E. coli e contagem padrão de bactérias heterotróficas em placa. As análises físico-químicas avaliaram cloro residual livre, fluoreto, turbidez, pH, cor aparente e sólidos totais dissolvidos. Duas amostras foram positivas para coliformes totais, apenas uma amostra coletada no poço 2 foi positiva para E. coli. Para bactérias heterotróficas todas a amostras apresentaram contagem em placa inferior a 500 UFC/mL. Todas as amostras estavam dentro do padrão determinado pela legislação para pH, turbidez e sólidos totais dissolvidos. Todas as amostras coletadas no poço 2 tiveram como resultado ausência de cloro residual livre, o mesmo resultado para os demais pontos na segunda coleta de amostras. Todas as amostras apresentaram fluoreto com valores abaixo do VMP estabelecido pela legislação brasileira porém apenas cinco com concentrações dentro da faixa estabelecida pela legislação do Estado de São Paulo ...
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Pós-graduação em Medicina Veterinária - FCAV
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Pós-graduação em Agronomia (Produção Vegetal) - FCAV
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Pós-graduação em Medicina Veterinária - FCAV
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Frying is a widely used method of preparing food, because it is a very fast and convenient process, and because it provides specific characteristics of color, flavor, odor, and texture, besides having great consumer acceptance. Therefore, the interest in the physiological effects that oils heated at high temperatures can cause to the human body arises. The aim of this work was to analyze the levels of frying used oil alteration in different kinds of foods served at the university restaurant at “Instituto de Biociências, Letras e Ciências Exatas” (IBILCE), in São José do Rio Preto-SP. In addition, it aims to make the restaurant aware of the good ways to fry and the commitment of providing good quality food to students and professionals of the Institute. With this purpose, determination of total polar compounds, conjugated dienoic acids, peroxide value, and fatty acid profile were analyzed. Two rapid tests were also used: 3M Fat Monitor and Oil Test kit. The results were compared with limits recommended for the disposal of oils and fats used in frying by the Brazilian Health Surveillance Agency (ANVISA), by other countries, and by other researches. Thus, it was concluded that the university restaurant provides the consumers with fried food of good quality, since none of the analyses showed results above recommended, although there is a need of improvement in the quality control of the oil used, in order to avoid unnecessary costs to the university restaurant.
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Epilepsy is a chronic disorder that impairs life quality (LQ) and interferes in emotional, personal, social and family relationship aspects. This study evaluated 165 people with epilepsy diagnosis, ranging from 18 to 75 years old (M=41,28; SD= 13,26), by means of the QQV-65 (Life Quality Questionnaire with 65 questions) and investigated the association between the questionnaire scores and the disease features, comparing patients who showed refrectory seizures with patients with partially controled seizures. There was no difference in relation to the two groups regarding the LQ factor. The QQV-65 emotional factor was the most affected in both groups, since the estimated mean z-escore was 51,0±14,4 for Group I and 49,9±14,7 for Group II. Regarding the type of crisis, the analysis of variance (ANOVA) revealed that Health was the only factor in QQV-65 that showed a statistically significant difference between the z-scores (P = 0.024). However, for the frequency of epileptic seizures, except Health (P = 0.185), other factors QQV-65 proved to be related in a statistically significant way (P> 0.05). The research demonstrated that seizure control perception is quite important in the evaluation of life quality in all its aspects (health, body, society, emotion, locus of control, self-concept and cognition).
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The flight quality describes the skills of the pilot realize a given task and its difficulty to perform it. Flight quality criteria provide a valuable reference for the designers during the requirements definitions phase and to develop them during the phase of flight testing. These criteria were taken important for the development of a fly-by-wire system. There are several flight quality criteria and this work analyzes the bandwidth criteria, this is evaluated according to a model an aircraft using the SIMULINK/MATLAB. In addition, the paper also describes in detail what is a flight quality criteria and shows an overview of the bandwidth criteria
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)