863 resultados para Avaliação e Controle de Qualidade de Alimentos


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Tese de mestrado integrado em Engenharia da Energia e do Ambiente, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2016

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The State and Public Administration have gone through several reforms in search of a quick operation and the provision of services with quality. With the democratization of the country and the issue of the Constitution in 1988, further reform of the State and Public Administration, joined the government agenda in 1995 and included among its objectives, the principles of participation and social control. In view of this, it raises the Public Ombudsman in order to be a channel for the participation of users in the management of public affairs, social control, transparency of administrative actions, improving the quality of service and meeting the needs of the community. The aim of this study is to assess whether the Ombudsman of the State Department of Public Health to contribute to the period 2006-2008, for the improvement of specialized consulting services. The research is characterized as descriptive, qualitative approach. The collection technique used was the interview, conducted with 37 service users and two servants of the Ombudsman. The analysis was developed based on the perception of users and servers in the opinion of the Ombudsman. The most relevant results of the research showed that 41% of users search the Ombudsman because they believed that solve the problem presented. However, even with this level of public acceptance, the Ombudsman reached average index of resolvability of 53% in the period. In his role has not developed mechanisms for quality control of services, which is mentioned by 67% of users. It turned out the same fact in relation to popular participation, which is confirmed by 84% of users. For 24% of users, the problems raised were resolved, and of these, 56% believe that the Ombudsman has contributed to the positive outcome. As a result of the search results, it appears that the Ombudsman's SESPA / PA, is not fulfilling its role to ensuring the democratization of articipation in management, social control and has limited contribution to solving the problems of users and to improve the quality of services

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On the aggravation of social problems and the shortage of resources, the improvement of evaluation methods and control of its application, requiring more efficiency, efficacy, effectiveness and participation in its management, has been growing. As a result, emerges the importance of studying and developing such methodologies. The overall goal of this dissertation is to know what are the difficults to incorporate the point of view of executers and beneficiaries in evaluation process. To do so, has been done a research characterized as qualitative, with a field strategy using the case study of two social projects called Petrobras Child Program, situated in the metropolitan region of Natal, and Content Analysis technique for analyze the data. The conclusions of this work can assist in improving the process of projects evaluation financed by Petrobras, contributing with its social role, besides the possibility of encouraging a greater participation of other society actors, such as beneficiaries, in the evaluation process

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O presente trabalho faz um enlace de teorias propostas por dois trabalhos: Transformação de valores crisp em valores fuzzy e construção de gráfico de controle fuzzy. O resultado desse enlace é um gráfico de controle fuzzy que foi aplicado em um processo de produção de iogurte, onde as variáveis analisadas foram: Cor, Aroma, Consistência, Sabor e Acidez. São características que dependem da percepção dos indivíduos, então a forma utilizada para coletar informações a respeito de tais característica foi a análise sensorial. Nas analises um grupo denominado de juízes, atribuía individualmente notas para cada amostra de iogurte em uma escala de 0 a 10. Esses valores crisp, notas atribuídas pelos juízes, foram então, transformados em valores fuzzy, na forma de número fuzzy triangular. Com os números fuzzy, foram construídos os gráficos de controle fuzzy de média e amplitude. Com os valores crisp foram construídos gráficos de controle de Shewhart para média e amplitude, já consolidados pela literatura. Por fim, os resultados encontrados nos gráficos tradicionais foram comparados aos encontrados nos gráficos de controle fuzzy. O que pode-se observar é que o gráfico de controle fuzzy, parece satisfazer de forma significativa a realidade do processo, pois na construção do número fuzzy é considerada a variabilidade do processo. Além disso, caracteriza o processo de produção em alguns níveis, onde nem sempre o processo estará totalmente em controle ou totalmente fora de controle. O que vai ao encontro da teoria fuzzy: se não é possível prever com exatidão determinados resultados é melhor ter uma margem de aceitação, o que implicará na redução de erros.

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An effective hygiene and sanitation inspection of meat and meat products is essential for its production and commercialization. For this reason, the national and international standards responsible for these products quality control employs microbiological analyses methods as quality control tools. In December of 2012, it was included in the Ministério da Agricultura Pecuária e Abastecimento (MAPA) website, a Microbiological Scope of food and water, which presents the replacement of some methods proposed by the Normative Instruction 62. Some of these methodologies are considered rapid, practical and convenient. However, other methodologies were still replaced by conventional ones, which presents disadvantages as incorrect interpretations of the microorganism phenotypical and biochemical characteristics, leading to the misinterpretation of test results. Therefore, the objective of this study is to develop a comprehensive, practical and illustrative guidebook of microbiological analysis for in natura poultry cuts. The methods addressed in this guide are the official standards analysis required by the poultry cuts legislation, which are the Escherichia coli count, the thermotolerant coliforms count, the aerobic plate count and the detection of Salmonella spp. The approached methodologies for these analysis will be the AOAC 998.08, the Normative Instruction 62 and the ISO 4833-1:2013 and ISO 6579:2002, respectively. In these events, it is expected to obtain an enlightening and approved guidebook evaluated by laboratory technicians, which will help reduce the analytical subjectivity leading to a more reliable interpretation of the test results.

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A necessidade de controlar de forma rápida, eficaz e precisa a qualidade de líquidos, principalmente a água, um bem essencial para os seres humanos, conduziu ao desenvolvimento de dispositivos capazes de relacionar a medição de parâmetros físicos com a qualidade da água. Estes dispositivos devem ser capazes de monitorizar os inúmeros parâmetros necessários para aferir a qualidade do líquido, como a turvação, índice de refração, concentração de sedimentos e propriedades cromáticas. Desta forma devem-se recorrer a sensores multiparâmetros. A tecnologia baseada em POF (fibra ótica polimérica) tem sido apontada com elevado potencial no desenvolvimento de sensores óticos nas mais variadas aplicações dado o seu baixo custo, imunidade a interferências eletromagnéticas e flexibilidade. Neste trabalho é proposto um sensor POF multiparâmetro capaz de reunir num único dispositivo a capacidade de medição de altos e baixos valores de turvação, assim como ter a capacidade de medir vários parâmetros em simultâneo e em tempo real. Os resultados permitem avaliar o aumento da capacidade de gama dinâmica de turvação e concentração de sedimentos face aos sensores multiparâmetros já comercializados, uma vez que houve uma boa resposta por parte do sensor para altos e para baixos valores. Um método utilizado para descorrelacionar os diferentes parâmetros foi aplicado com sucesso. A WATGRID LDA. pretende, partindo deste tipo de sensores, disponibilizar aos seus clientes soluções (plataformas) inteligentes e integradas para avaliação e gestão da qualidade dos líquidos para consumo (e.g. água e vinho). Estas soluções irão permitir que os clientes da WATGRID LDA. aumentem a sua eficiência, a qualidade do seu produto e tenham um maior controlo do processo ao mesmo tempo que reduzem custos.

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Actividades do Departamento de Alimentação e Nutrição no âmbito da vigilância e segurança alimentar. Acreditação de ensaios segundo a NP/EN ISO 17025. Requisitos da Norma ISO 7218, Amd 1:2013. Colheita de amostras de alimentos prontos a comer, para avaliação do nível de qualidade microbiológica. Colheita de amostras de superfícies higienizadas para avaliação do estado higiénico. Valores Guia, INSA. Actividades de controlo analítico no âmbito da investigação de surtos de toxinfecção alimentar.

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Two cheese formulations made from raw milk and endogenous yeasts with 30, 60 and 180 days of maturation in two dairy Paraná Southwest were studied to evaluate their quality through physical, physical-chemical, microbiological and sensorial characteristics, as one of the stages of development of a typical regional cheese. The production was accompanied from designing the flowchart processing, where the samples were collected to perform the analysis of proteins, lipids, moisture, ash, carbohydrates, total solids, fat in dry matter, calories; water activity, instrumental texture (hardness, adhesiveness, springiness, cohesiveness, resiliency and chewiness), instrumental color (CIE Lab); microbiological quality was assessed searching for total and thermotolerant coliforms, coagulase positive staphylococci and Salmonella spp.; the acceptance related to sensory characteristics of color, appearance, flavor, texture, taste and purchase intent was evaluated through the structured hedonic scale. This research contributed information relevant to the production process, such as the realization of the viability in freeze-drying lactic acid bacteria yeast isolated from milk in the Southwestern Mesoregion of Parana and the results of the analysis of the cheese showed similarity between formulations, regarding the physical, physical-chemical characterization, moreover good microbiological quality, where the differences between samples of dairy products were not perceived by sensory panelists. Adjustments in standardization related to technological quality control is an extremely important factor for the success of dairy companies and small producers involved in the project and that they have the option of producing the Santo Giorno, a fine cheese, with the great advantage of adding features of region, with high standard of sanitary conditions and with great consumer acceptance of indicative.

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Tese (doutorado)—Universidade de Brasília, Faculdade de Educação, Programa de Pós-graduação em Educação, 2015.

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Agroquímicos são amplamente utilizados na atividade agrícola com o objetivo de aumentar a produção e melhorar a qualidade dos alimentos, no entanto podem vir a gerar danos ao meio ambiente e a organismos não-alvo. Dentre esses pesticidas encontra-se o herbicida glifosato, o qual vem sendo mais utilizado mundialmente. Seu mecanismo de ação se dá através da inibição da enzima 5-enolpiruvilshikimato-3- fosfatosintase, intermediária da síntese de aminoácidos aromáticos essenciais em plantas. Pouco se sabe sobre os efeitos da substância glifosato em animais, pois os estudos realizados visam principalmente os efeitos da formulação comercial, a qual contém surfactantes e outras substâncias inertes. Tendo isso em vista, esse estudo avaliou o efeito do glifosato no teleósteo Danio rerio considerando parâmetros de estresse oxidativo, atividade e expressão da acetilcolinesterase e parâmetros reprodutivos. Foram feitas exposições a 5 mg/L e 10 mg/L de glifosato, mais um grupo controle por 24 e 96 horas, somente com peixes machos. Para análise bioquímica foram retirados cérebro, brânquias e músculo; para análise molecular, cérebro e músculo; e para análise na qualidade espermática dos peixes, os testículos. Quanto às análises bioquímicas houve um aumento na capacidade antioxidante contra radicais peroxil nas brânquias na concentração de 5 mg/L após 24 horas de exposição; uma redução na peroxidação lipídica no cérebro na maior concentração (10 mg/L) após 24h e um aumento da mesma em músculo, também em 10 mg/L, após 96 horas. Não foi observada alteração na geração de espécies reativas de oxigênio decorrente da exposição ao glifosato, assim como na atividade da enzima acetilcolinesterase; já na expressão gênica desta enzima houve uma diminuição no cérebro após 24 horas de exposição e um aumento no cérebro e no músculo após 96 horas. Quanto à qualidade espermática dos peixes, houve uma redução na motilidade e período de motilidade dos espermatozóides nas concentrações de 5 mg/L e 10 mg/L em ambos tempos de exposição; na concentração de 10 mg/L ainda houve uma redução da funcionalidade mitocondrial, integridade de membrana do espermatozóide e integridade de DNA após 24 e 96 horas. Sendo assim, o glifosato se mostrou capaz de alterar o balanço oxidativo dos tecidos do peixe Danio rerio bem como alterar significativamente a expressão gênica da enzima acetilcolinesterase. Além disso, nossos resultados demonstram que o glifosato pode interferir na reprodução deste animal, através da redução de sua qualidade espermática.

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The intensive character in knowledge of software production and its rising demand suggest the need to establish mechanisms to properly manage the knowledge involved in order to meet the requirements of deadline, costs and quality. The knowledge capitalization is a process that involves from identification to evaluation of the knowledge produced and used. Specifically, for software development, capitalization enables easier access, minimize the loss of knowledge, reducing the learning curve, avoid repeating errors and rework. Thus, this thesis presents the know-Cap, a method developed to organize and guide the capitalization of knowledge in software development. The Know-Cap facilitates the location, preservation, value addition and updating of knowledge, in order to use it in the execution of new tasks. The method was proposed from a set of methodological procedures: literature review, systematic review and analysis of related work. The feasibility and appropriateness of Know-Cap were analyzed from an application study, conducted in a real case, and an analytical study of software development companies. The results obtained indicate the Know- Cap supports the capitalization of knowledge in software development.

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The State and Public Administration have gone through several reforms in search of a quick operation and the provision of services with quality. With the democratization of the country and the issue of the Constitution in 1988, further reform of the State and Public Administration, joined the government agenda in 1995 and included among its objectives, the principles of participation and social control. In view of this, it raises the Public Ombudsman in order to be a channel for the participation of users in the management of public affairs, social control, transparency of administrative actions, improving the quality of service and meeting the needs of the community. The aim of this study is to assess whether the Ombudsman of the State Department of Public Health to contribute to the period 2006-2008, for the improvement of specialized consulting services. The research is characterized as descriptive, qualitative approach. The collection technique used was the interview, conducted with 37 service users and two servants of the Ombudsman. The analysis was developed based on the perception of users and servers in the opinion of the Ombudsman. The most relevant results of the research showed that 41% of users search the Ombudsman because they believed that solve the problem presented. However, even with this level of public acceptance, the Ombudsman reached average index of resolvability of 53% in the period. In his role has not developed mechanisms for quality control of services, which is mentioned by 67% of users. It turned out the same fact in relation to popular participation, which is confirmed by 84% of users. For 24% of users, the problems raised were resolved, and of these, 56% believe that the Ombudsman has contributed to the positive outcome. As a result of the search results, it appears that the Ombudsman's SESPA / PA, is not fulfilling its role to ensuring the democratization of articipation in management, social control and has limited contribution to solving the problems of users and to improve the quality of services

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Human multipotent mesenchymal stromal cells (MSCs), also known as mesenchymal stem cells, have become an important and attractive therapeutic tool since they are easily isolated and cultured, have in vitro expansion potential, substantial plasticity and secrete bioactive molecules that exert trophic effects. The human umbilical cord as a cell source for cell therapy will help to avoid several ethical, political, religious and technical issues. One of the main issues with SC lines from different sources, mainly those of embryonic origin, is the possibility of chromosomal alterations and genomic instability during in vitro expansion. Cells isolated from one umbilical cord exhibited a rare balanced paracentric inversion, likely a cytogenetic constitutional alteration, karyotype: 46,XY,inv(3)(p13p25~26). Important genes related to cancer predisposition and others involved in DNA repair are located in 3p25~26. Titanium is an excellent biomaterial for bone-implant integration; however, the use can result in the generation of particulate debris that can accumulate in the tissues adjacent to the prosthesis, in the local bone marrow, in the lymph nodes, liver and spleen. Subsequently may elicit important biological responses that aren´t well studied. In this work, we have studied the genetic stability of MSC isolated from the umbilical cord vein during in vitro expansion, after the cryopreservation, and under different concentrations and time of exposition to titanium microparticles. Cells were isolated, in vitro expanded, demonstrated capacity for osteogenic, adipogenic and chondrogenic differentiation and were evaluated using flow cytometry, so they met the minimum requirements for characterization as MSCs. The cells were expanded under different concentrations and time of exposition to titanium microparticles. The genetic stability of MSCs was assessed by cytogenetic analysis, fluorescence in situ hybridization (FISH) and analysis of micronucleus and other nuclear alterations (CBMN). The cells were able to internalize the titanium microparticles, but MSCs preserve their morphology, differentiation capacity and surface marker expression profiles. Furthermore, there was an increase in the genomic instability after long time of in vitro expansion, and this instability was greater when cells were exposed to high doses of titanium microparticles that induced oxidative stress. It is necessary always assess the risks/ benefits of using titanium in tissue therapy involving MSCs, considering the biosafety of the use of bone regeneration using titanium and MSCs. Even without using titanium, it is important that the therapeutic use of such cells is based on analyzes that ensure quality, security and cellular stability, with the standardization of quality control programs appropriate. In conclusion, it is suggested that cytogenetic analysis, FISH analysis and the micronucleus and other nuclear alterations are carried out in CTMH before implanting in a patient

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On the aggravation of social problems and the shortage of resources, the improvement of evaluation methods and control of its application, requiring more efficiency, efficacy, effectiveness and participation in its management, has been growing. As a result, emerges the importance of studying and developing such methodologies. The overall goal of this dissertation is to know what are the difficults to incorporate the point of view of executers and beneficiaries in evaluation process. To do so, has been done a research characterized as qualitative, with a field strategy using the case study of two social projects called Petrobras Child Program, situated in the metropolitan region of Natal, and Content Analysis technique for analyze the data. The conclusions of this work can assist in improving the process of projects evaluation financed by Petrobras, contributing with its social role, besides the possibility of encouraging a greater participation of other society actors, such as beneficiaries, in the evaluation process