998 resultados para Técnico de Radiologia


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Pós-graduação em Serviço Social - FCHS

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Este artigo apresenta o método, critérios e resultados obtidos a partir da comparação de conceitos legal e técnico do termo poluição. Objetivou constatar se tal conceito está sendo redigido de forma clara ou de forma imprecisa e verificar a existência de eventuais incompatibilidades entre eles. Foram consultadas diferentes fontes para selecionar os conceitos, tais como: livros, artigos, legislação, decisões judiciais, dicionários, glossários, mídias eletrônicas, internet. O método científico utilizado foi o método comparativo. Foi estabelecido o elemento constituinte essencial do conceito poluição, a partir daquilo que lhe era essencial, principal, necessário, universal, geral, comum. A comparação resultou em três possibilidades de classificação: 1. reprodução literal do conceito legal; 2. a essência do conceito técnico está em consonância com a essência do conceito legal; 3. a essência do conceito técnico não está em consonância com a essência do conceito legal (com as devidas justificativas). Com o desenvolvimento da pesquisa foi possível constatar e apontar a existência de incompatibilidades entre os conceitos legal e técnico. Palavras-chave: poluição; poluição ambiental; conceito legal; conceito técnico.

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O Brasil, destacado pela sua espetacular “geodiversidade”, já se coloca no grupo dos grandes produtores e exportadores mundiais do setor de rochas. Sua produção inclui granitos, ardósias, quartzitos, mármores, travertinos, pedra-sabão, serpentinitos, calcários, conglomerados, basaltos, gnaisses foliados e várias outras rochas, somando cerca de 6 milhões de t/ano e abrangendo 600 variedades comerciais, derivadas de 1.500 frentes de lavra. Os 18 arranjos produtivos locais (APL’s) do setor de rochas, identificados no Brasil, envolvem atividades mínero-industriais em 10 estados e 80 municípios, nas regiões Sudeste, Sul, Centro-Oeste, Norte e Nordeste. Mais amplamente, são registrados 370 municípios com recolhimento da CFEM (Compensação Financeira pela Exploração Mineral) para extração de rochas de revestimento. Estima-se a existência de 11.500 empresas do setor de rochas atuantes no Brasil, responsáveis pela geração de 120.000 empregos diretos e por um parque de beneficiamento com capacidade de serragem e polimento para 50 milhões m2/ano em granitos, mármores, travertinos, e de mais 40 milhões m2/ano para rochas de processamento simples, sobretudo ardósias, basaltos laminados, quartzitos e gnaisses foliados. As transações comerciais do setor nos mercados interno e externo, incluindo-se negócios com máquinas, equipamentos e insumos, movimentam cerca de US$ 2,5 bilhões/ano. As exportações do setor somaram US$ 429,4 milhões em 2003 e estão atendendo cerca de 90 países, destacando-se que o Brasil já é o principal fornecedor de granitos beneficiados para os EUA, além de ser o segundo maior exportador mundial de ardósias.

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O objetivo deste trabalho é investigar a estratégia de inferência lexical de palavras-chave em textos técnicos de língua inglesa. Os sujeitos da pesquisa são alunos de um curso técnico de Eletrônica, falsos principiantes na língua estrangeira. A análise dos dados é quantitativa e qualitativa. A pesquisa observa o papel do conhecimento prévio dos sujeitos sobre assuntos específicos e as pistas contextuais oferecidas pelo autor de textos técnicos, na inferência lexical. As categorias de familiarização lexical estudadas são: explicação, definição, exemplificação, ilustração, estipulação e sinonímia. Os resultados demonstram uma certa preponderância das estratégias de uso do conhecimento prévio sobre as de uso de pistas contextuais, embora a pesquisa tenha constatado que a interação das duas estratégias seja importante para que a inferência lexical seja produzida com maior sucesso.

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Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

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Pós-graduação em Engenharia Mecânica - FEG

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The brachytherapy braquiterapia is an x-ray modality radiotherapy in which stamped or halfstamped radioactive sources in format of seeds are used, wires or to one short distance, in contact or implanted to the fabric to be treated. All the treatment modalities require a previous planning. The formalism recommended for calculation of dose was considered by the AAPM for the first TG-43 Report. In it distributions of dose of isolated seeds measured and calculated by Monte Carlo method in water instead of with models half-empiricists. In this work we in accordance with present some preliminary results of the calculation of functions of radial anisotropy and of dose in the distance for seed of 192Ir, wide used in brachytherapy treatments of high tax of dose (HDR), with the aid of the program based on the Monte Carlo method MCNPX v2.50 (Mount Carlo N ParticleeXtended). The materials chosen in the simulation beyond water, had been MS20 and estriado muscle

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The brachytherapy braquiterapia is an x-ray modality radiotherapy in which stamped or halfstamped radioactive sources in format of seeds are used, wires or to one short distance, in contact or implanted to the fabric to be treated. All the treatment modalities require a previous planning.The formalism recommended for calculation of dose was considered by the AAPM for the first TG-43 Report. In it distributions of dose of isolated seeds measured and calculated by Monte Carlo method in water instead of with models half-empiricists.In this work we in accordance with present some preliminary results of the calculation of functions of radial anisotropy and of dose in the distance for seed of 192Ir, wide used in brachytherapy treatments of high tax of dose (HDR), with the aid of the program based on the Monte Carlo method MCNPX v2.50 (Mount Carlo N ParticleeXtended).The materials chosen in the simulation beyond water, had been MS20 and estriado muscle

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In the current historical period marked by globalization and neoliberal policies have seen the pursuit of expanded reproduction of capital by corporations, which make from the deepening territorial division of labor, ie, the increasing presence of its circuit productive space within steps towards the relations between capital and labor. This capital increase is made possible mainly by exploiting precarious forms of labor. In Brazil today, much of the population enjoys the possibilities of consumption, due mainly to the policy measures implemented in the last decade, this situation favors further expansion of large companies in our territory, thus the circuit analysis of spatial production of cosmetics contributes to a political debate about the uses of the national territory. Given that companies are organizations whose actions occur inseparably technical systems that make up the territory, this course conclusion work seeks to understand the circuit of production space and cooperation circles cosmetics company Natura Cosmetics S/A

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The biomass gasification systems have been used for a long time and prove to be a good alternative to the generation of energy problems. This type of management requires a simple installation and maintenance which gives them a high availability. In Biomass project via Call CTEnerg 33/2006-1, funded by the Ministry of Science and Technology - MCT - Brazil, the Group Energy Systems Optimization – GOSE - at FEG - UNESP built and tested two prototypes of gasifiers. These is fed with 25 kg / h of dry wood (chips), and 50 Nm3 / h of air to produce gas at a flow rate of approximately 70 Nm3 / h of wood (syngas) at a temperature approximately 600 ° C. In this work of graduation, studies were conducted on the materials used in both the gasifier as well as cleaning the filter synthesis gases. The system of gas cleaning and conditioning is vital to ensure the life of the Internal Combustion Engine. In this case the studies of different filters for small gasification systems (properties, materials used, characteristics, types, etc.) are very relevant to its use in the prototype of the college campus. Were also performed a technical and economic analysis of a cogeneration system that consists in the combination of the downdraft gasifier studied in this work, an internal combustion engine, two heat exchangers and a SRA (absorption system refrigerator). Were calculated the costs of electricity generation, hot water and cold water. Finally, we analyzed the economic feasibility of the project

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This project aims the verification of doses in canines and felines to chest and coxal exams due to the transition from screen-film to computed radiography system. It also seeks a possible optimization of the new techniques employed in this new system. The study was carried out in Diagnostic Imaging service in Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo using a conventional x-ray equipment. Initially, data about the physical characteristics of animals and the technique currently used in computed radiography was collected for each of 80 chest and 16 coxal X-ray examinations. The animals were divided into different groups according to the body weight. For each group, were calculated the averages of each item: thickness of the region to be imaged, voltage, current, exposure time, current-time product, size of film used, presence or absence of bucky and focus (small or large). The techniques have been reproduced in phantoms (representative of the thickness of the animal) in order to collect the air kerma entrance. Based on the average of intermediate size M group (weights less than 5 kg for cats and from 10.1 kg and 20 kg for dogs) analysis of image quality using three devices test patterns were made consisting of the evaluation of spatial resolution, low-contrast resolution and contrast-detail. In general, the results showed the dose animals decreased with the use of computed radiography and was possible to preliminary optimization of some techniques used currently in CR

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Nuclear medicine uses non-sealed sources for exams and treatments, because the movement of these sources, source of patients injected or not, involve a wide range of environmental radiometric levels. To better control of these levels this study was aimed at monitoring points strategically distributed in all environments Sector Technical Nuclear Medicine, Hospital of the Botucatu Medical School, performing two measurements at random times daily for a period of three months, sampling the normal routine of the sector. The detector Geiger-Muller was used for the acquisition of exposure rates of the points, efficiency and reprodutibility test have shown good performance of this equipment for this purpose. The results allowed to make a projection of annual dose for each environment indicating higher risks for Occupationally Exposed Individuals as well as Public Individuals compared with the limits established by the National Commission of Nuclear Energy. Was developed a spatial map of dose that can be used as a visual warning to the regions with the highest exposure to ionizing radiation, enabling reduced risk of a potential exposure