999 resultados para Computadores - Medidas de segurança - Legislação
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Pós-graduação em Cirurgia Veterinária - FCAV
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Pós-graduação em Saúde Coletiva - FMB
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The Quality Control services for diagnostic imaging is essential to ensure that their activities occur as planned. Procedures are aimed at a positive cost-benefit to the institution and risk-benefit to the patients. And this requires trained and skilled professionals working with high technology equipment. The company PhyMED Consultores em Física Médica e Radioproteção Ltda., a Pioneer in the field of Medica Physics in Rio Grande do Sul, is dedicated to providing consulting services in healthcare. Physicists are experienced working in many areas of diagnostic imaging
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Qualidade na coleta de dados do feixe de radiação, modelagem por meio do sistema de planejamento de tratamento (SPT) e controle da qualidade do processo envolvido são cruciais à fidedignidade do serviço de radioterapia de forma a contribuir à eficácia do tratamento e segurança do principal ente envolvido no final de toda essa sistemática, o paciente. Para isso foi proposto nesse presente trabalho a coleta de dados do feixe de raios-x de 6MV seguido da introdução desses dados ao SPT para processo de modelagem computacional que teve agregado, a todo esses processos, o controle da qualidade segundo critérios de aceitação
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Medical Physics is an interdisciplinary field that applies concepts and laws of physics in medical practices. Currently, one of its main applications is the use of ionizing radiation in the treatment of oncological diseases. Due to its wide use and highly dangerous, many of radioprotection procedures should be adopted with the objective of protecting human beings from harmful effects of radiation. Thus, you can better enjoy the benefits that the practice can offer. The methodology proposed by the National Council on Radiation Protection 151 (NCRP 151), relates technical information necessary to Structural Shielding Design and Evaluation for Megavoltage X- and Gamma- Ray Radiotherapy Facilities. However, many parameters used to calculate the shield are based on estimates only, and it is an international standard that may not be adequate to the Brazilian reality. Thus, the central idea of this study is the collection of data from the routine of the Radiotherapy Service of the Real e Benemérita Associação Portuguesa de Beneficência, in particular equipment cobalt therapy Theratron 780 (Atomic Energy of Canada Ltd.) and the linear accelerator Varian Clinac 2100C for measurement of workload, number of patients, fields, and dose factors to determine the best use of barrier protection. Furthermore, this work features a profile of radiotherapy treatments carried out closer to the Brazilian reality
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A Dosímetria Termoluminescente (TLD) é uma ferramenta extremamente versátil para a avaliação da dose absorvida por tecidos humanos, devido à interação dos mesmos com a radiação ionizante. As características termoluminescentes (TL) do fluoreto de lítio (LiF) foram estudadas extensivamente primeiramente por apresentar número atômico muito próximo ao do tecido humano e, portanto, conseguir quantificar com fidelidade a radiação recebida na ordem de μGy (micro Gray) a kGy (kilo Gray) . Foram abordados os princípios físicos envolvido no procedimento de calibração e tratamento dos dosímetros (total de 224 pastilhas), os quais foram separados, após tratamento, em 75 grupos. Este trabalho foi de suma importância na aplicação dos conceitos físicos abordados durante a formação da graduação no curso de Bacharelado em Física Médica, e pode auxiliar em projetos, em andamento, junto ao grupo de pesquisa de Física Aplicada ao Radiodiagnóstico
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Atropelamentos associados à fragmentação dos habitats naturais, tanto para construção de estradas, quanto para agricultura, são uma das principais causas de mortalidade para várias espécies de animais silvestres pelo mundo todo. Durante o período de agosto de 2011 e junho de 2012, em um trecho da Estrada Vicinal Alcides Rodrigues Soares do município de Botucatu, interior do estado de SP, foi realizado o levantamento de mamíferos terrestres de médio e grande porte através do método de parcelas de areia e transecto, além da procura de carcaça de animais atropelados. Espécies como Onça-parda (Puma concolor) e Tamanduá-bandeira (Myrmecophaga tridactyla), ambas em situação vulnerável de extinção, foram registradas em proximidade da estrada. Através dos dados obtidos, tem se como objetivo demonstrar a importância da valorização da fauna local, com a construção de passagens de fauna, como uma das medidas para a sua conservação e consequente redução dos diversos distúrbios e impactos causados por estradas
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This work aims to give greater visibility to the issue of software security, due to people talk a lot in security conferences, that much of both IT (Information Technology) staff and, more specifically, IS (Information Security) staff does not know this, and, thanks to the spread of the mobile computing and of the cloud computing, this lack of deeper knowledge on this subject is increasingly becoming worrisome. It aims too, make applications to be developed in a security manner, priorizing the security of the information processed. It attempts to demonstrate the secure coding techniques, the principles of software security, the means to identify software vulnerabilities, the cutting-edge software exploitation techniques and the mechanisms of mitigation. Nowadays, the security guys are in charge of the most of the security tests in applications, audits and pentests, and it is undeniable that the so-called security experts, most often come from computer network field, having few experience in software development and programming. Therefore, the development process does not consider the security issue, thanks to the lack of knowledge on the subject by the developer, and the security tests could be improved whether security experts had a greater know-how on application development. Given this problem, the goal here is to integrate information security with software development, spreading out the process of secure software development. To achieve this, a Linux distribution with proof of concept applicati... (Complete abstract click electronic access below)
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This study aimed to develop a computer program which systematizes the structural shielding design calculation in diagnostic radiology facilities. For this purpose methodology of the National Council of Radiation Protection and Measurements (NCRP 147[5]) was used. By comparative statistics studies, it was verified if reference parameters values suggested by the US publication correspond to the average national values. The World Wide Web was chosen because of its characteristics as a powerful mean of communication, especially in terms of the wide variety of useful resources and easy access. To compare the reference values of some parameters proposed by NCRP 147 to Brazilian average, studies about the normalized workload per patient, performance of X-ray tube and primary air kerma, unshielded, at one meter from the focal point of the X-ray tube were made. Through this research, relative differences were found. In workload values this differences reached up to 50% in mammography compared to those presented by the NCRP 147; in X-ray tube performance the percentage differences reached 69% in dental radiology, and air kerma results amounted 31% in fluoroscopy. This demonstrates the importance of validation of international protocols to local realities
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After the discovery of ionizing radiation, its applications in various fields of science began to take significant proportions. In the case of medicine, there are the application areas in radiotherapy, diagnostic radiology and nuclear medicine. It was then necessary to create the field of radiological protection to establish the conditions necessary for the safe use of such ionizing radiation. Apply knowledge obtained during the graduation stage and in the practice of radiological protection in the areas of nuclear medicine and diagnostic radiology. In the area of nuclear medicine, tests were made in the Geiger-Muller counters (GM) and the dose calibrator (curiometer), the monitoring tests of radiation, waste management, clean of the Therapeutic room and testing the quality control of gamma-chambers. In the area of radiology, were performed tests of quality control equipment for conventional X-ray equipment and x-ray fluoroscopy, all following the rules of the National Health Surveillance Agency (ANVISA), and reporting of tests. The routine developed in the fields of nuclear medicine in hospitals has proved very useful, since the quality control of GM counters contribute to the values of possible contamination are more reliable. The control of dose calibrator enables the patient not to receive different doses of the recommended amounts, which prevents the repetition of tests and unnecessary exposure to radiation. The management of waste following the rules and laws established and required for its management. Tests for quality control of gamma chambers help to evaluate its medical performance through image. In part of diagnostic radiology, tests for quality control are performed in order to verify that the equipment is acceptable for usage or if repairs are needed. The knowledge acquired at the internship consolidated the learning of graduation course
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Pós-graduação em Engenharia Elétrica - FEIS
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Nuclear Medicine is a medical modality of therapy and diagnostic imaging using unsealed radioactive sources for its purposes. This routine activity promotes the transit of radioactive sources for the area of installation, beyond the transit of patients injected with radioisotope, which also contribute to raising the radiometric level of environment. As a consequence, it has exposured workers and public individuals to the ionizing radiation. There are protective mechanisms of radiation exposure, personal protective equipments, and measurement planes established in standard measurement at certain points of the environment in order to identify any increase in radiometric levels and \ or contamination, but do not cover the entire space occupied by workers and patients. To accomplish with the individual dose limits established by the National Commission of Nuclear Energy, it is interesting if there is an individualized classification for each Nuclear Medicine service. This work aimed to promote an analysis of the radiometric level distribution across the extent of the Technical Nuclear Medicine Sector of Hospital of the Botucatu Medical School, and produce a spatial map to identify locations with higher exposure rate to the ionizing radiation, can be used as a risk map to assist the Occupationally Exposed Individuals (IOE). To perform the radiometric levels checking it was used a digital Geiger-Muller detector available in the sector, due to its practicality compared to other detectors. Measurements were carried out at four different times for all days of the week, at points strategically established to cover all the installation
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Biosecurity is currently a concern for all health-related services, including dentistry, since infection control has a relevant importance. In dental practice, health-related occupations have contact with a great number of individuals who are potentially capable to transmit pathogens. This study comprised a descriptive evaluation of the universal precaution measures for infection control adopted by dental practitioners working at public and private offices in the city of Araçatuba, SP. Data collection was performed by a quiz with questions about individual and collective protection equipments. The results showed that the use of caps was reported by 55% of the professionals working at the public sector and 90% for the private sector. The use of masks and gloves was reported by all professionals surveyed; nevertheless, glove change between patients was not reported by 40% of professionals working at the public sector. There were more flaws in public offices as to the use of protective barriers, since except for the use of gloves, gowns and masks, the frequency of use of those barriers was smaller than at private offices.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Ciência da Computação - IBILCE