981 resultados para Materiais - Testes


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The burn is among the leading causes of morbidity and mortality in our society. It shows a great complexity and is hard to treat. Beyond the physical suffering, the burned patient is affected by psychological distress, requiring a high level of knowledge for assistance planning. The Professional Practice Law No. 7498 establishes the nurse as in charge of the client, as leader of the nursing team and as responsable for the management of physical and human resources. The nurse has autonomy to design the quantitative and qualitative picture of the nursing staff and should use the methodologies for their suitability to the real levels of assistance needed. Material resources represent 15 to 25% of total expenditures at health organizations. Therefore, to maintain the care level, nurses must determine the needs, considering the quantitative, qualitative and financial aspects. The study aimed the survey of the human and material resources necessary for nursing care to patients in a Burns Treatment Unit and identify its epidemiological profile and its nursing diagnoses. We collected the data from medical records of hospitalized between July and August, and the nursing diagnoses were classified through the Taxonomy II proposed by the North American Nursing Diagnosis Association (NANDA). The design of the picture of nurses followed the parameters of COFEN Resolution nº 293/2004. We apply the Fugulin's Patients Classification System to establish levels of the required care. The institution's Cost Center provided a spreadsheet with the purchased items, subsequently classified into ABC. Most hospitalized patients were men, aged between 20 and 50. There was a predominance of patiences with minor burned and the most common type of burn was due to fire. The average residence time was 28.71 days, and 88% of the patients were discharged... (Complete abstract click electronic access below)

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Combining the characteristics of good adhesion and sealing of the AH Plus sealer the biological properties of the MTA, zinc oxide and calcium hydroxide, the purpose of this study was to evaluate the cytotoxicity of these associations. The specimens of the sealers and their associations were mixed and exposure to culture medium (82.4 mm2surface/mL) after the manipulation and incubated in a humidified incubator (37°C and 100% humidity) for 24 h. Chinese hamster lung fibroblasts (V79) were exposed to different dilutions of this extracts for 24 h and cell viability was measured by MTT test. The differences between the cell survival rates were statistically analyzed for Kruskal-Wallis and Dunn (p≤0.05). All sealers showed a significant difference with the group control, except the MTA. Cytotoxicity with the control group increased in the following order: AH Plus < AH Plus + Ca(OH) 2 < AH Plus + OxZn< AH Plus + MTA < MTA (p≤ 0,05). It was concluded that the addition of biological materials in order to improve the consistency of AH Plus for use in retro cavities its toxicity has not decreased significantly

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Em trabalho anterior, observou-se que diferentes grupamentos musculares submetidos ao teste de exaustão (TE) com pesos respondem semelhantemente com hemoconcentração, acidose e aumento da glicemia, entretanto, com variações grupomuscular dependentes. Nesse estudo, é comparado o efeito do impacto provocado pelo TE envolvendo, conjuntamente, 5, 4 ou 3 exercícios por meio da análise desses marcadores bioquímicos. Foram estudados 21 indivíduos do sexo masculino (20-32 anos) voluntários, familiarizados com treinamento em musculação, estratificados em três grupos de acordo com o número de exercícios: grupo 5 ( n= 6) 5 exercícios (Extensão do cotovelo, desenvolvimento pela frente, supino reto, levantamento terra e agachamento), grupo 4 (n= 7) 4 exercícios (Supino reto, rosca direta com barra, agachamento hack, tríceps no pulley), grupo 3 (n= 8) 3 exercícios (Agachamento hack, supino reto, rosca direta ) . Todos foram submetidos à sobrecarga inicial de 80% de uma repetição máxima (1RM), até a exaustão, em seguida, com auxílio externo e sem interrupção do exercício, a carga foi reduzida em 20% do peso, até a impossibilidade de continuidade de realização do exercício com a carga mínima (20% de 1RM). O sangue coletado em veia cubital antes (At) e imediatamente após (Ap) o TE foi analisado para indicadores hemogasimétricos (pH, pO2, pCO2, HCO- 3), hemoconcentração (Ht) e glicemia. O efeito do TE sobre cada variável (At/Ap) foi avaliado comparando-se os grupos por meio de ANOVA-medidas repetidas para significância de p=0,05. Houve significância (p<0,05) na elevação do Ht, glicose e pO2 e redução do pH, PCO2 e HCO- 3, Entretanto houve diferença significativa entre os grupos apenas em relação ao HCO- 3, no qual este apresentou maior variação no G4 em relação ao demais. Assim, esses marcadores sistêmicos respondem a exaustão muscular de modo semelhante ao envolvimento de 3,4 ou 5 grupamentos musculares

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The small angle X-ray scattering (SAXS) technique has been used with very much versatility and success in the structural characterization of nanostructured materials. The present work deals with a study of the principles of the SAXS technique and of some classical models employed in the structural characterization of nanostructured materials. Particularly, the study of the models and of the associated methodologies is applied to a set of samples of silica gels, of varied typical structures, prepared in the Laboratório de Novos Materiais of the Departamento de Física of the IGCE. The work discusses in an introductory chapter the principles of the SAXS technique and the foundation of classical models often used in the structural characterization of materials. The classical models and the associated methodologies were applied to a variety of silica gel structures. The studies include: i) the scattering from a system of particles - Guinier's law; ii) the asymptotic scattering from a two-phase system - Porod's law; iii) systematic deviation from Porod's law - Surface Fractal; iv) heterogeneities in solids with random size distribution - DAB Model; and v) the scattering from mass fractal structures. The analyses were carried out from experimental SAXS data obtained in several opportunities at the Laboratório Nacional de Luz Síncrotron (LNLS)

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The object of this study was assess through pre-clinical tests, the possible diuretic activity and the effects on the mean arterial pressure of the aqueous and ethanolic extracts of branches of “bugre”, Hedyosmum brasiliense Miq., species used in the treatment of renal and urinary disorders The tests were made in males anesthetized Wistar rats and randomly distributed into 4 experimental groups: Group I – Water control, group II – treated with aqueous extract (EA) of “bugre”, Group III – water control + “tween 80”, group IV – treated with ethanol extract (EE) and “bugre”. All groups were subjected to experimental protocol, composed of three periods: Balance (40 minutes), Basal (30 minutes) and Experimental (90 minutes), occurring the urine collection every 30 minutes, from the basal period and measuring blood pressure every 10 minutes. The results presented validate the ethnobotany indication of the use of H. brasiliense tea in the treatment of renal problems, because increased significantly the urinary flow in anesthetized Wistar rats (diuretic effect), without changing significantly (p>0,05) the arterial pressure

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The approach of the subject matter in this work relies on the fact that the reliability of methods for performance analysis of materials proves critical for the result. This work focused on the development and presentation of the methodology for lifting probability curves for fatigue test (SN) according to standard E739, this focus is justified by the fact that the results in fatigue test show considerable dispersion making it difficult to reading and interpretation of data, this dispersion arises because the phenomenon of rupture is strongly influenced by internal characteristics of the material, we can then have much data ranging from test to test. Thus we set out originally for a brief study of aluminum alloys in question, as well as the treatments to which they were subjected. We also studied the behavior of materials when subjected to cyclic loading, which configures process of fatigue failure, and even fatigue test method in question. This statistical analysis is based on the ASTM E739 standard, so its contents was studied in detail so that we could present in detail the methodology and raise SN curves for different aluminum alloy 7012 subjected to fatigue test. Data were collected from tests conducted in the department of materials from two samples of aluminum alloy 7012 solubilized and precipitated by different time intervals and assayed temperature fatigue-type traction-compression, these data were then analyzed and used to survey curves using the base as E739. After lifting the curve analyzed the characteristics of the test samples and their correlation with the test results. We confirmed the effectiveness of the method of statistical analysis by ASME E739, which allowed the reading of data without this method would be very difficult to have a reading and comparison of the results for the two types... (Complete abstract click electronic access below)

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A presença de falhas, trincas, furos e fadigas causam perturbações nos modos vibracionais (normais) de uma estrutura, por exemplo, tubos, gasodutos e peças metálicas. Uma vez conhecido o espectro de freqüência de uma estrutura instalada em condições normais (sem falhas), é possível acompanhar através, de ensaios não destrutivos uma alteração no espectro de freqüência que pode estar associado a alguma falha mecânica na estrutura.O presente trabalho busca encontrar um padrão nos sinais de resposta dos materiais analisados pela técnica de Vibroacustografia, antes e depois das deformidades causadas. Tentando viabilizar a técnica para a utilização em Ensaios Não Destrutivos (END). E futuramente, para as amostras biológicas, espera-se estender os conhecimentos obtidos dos ensaios anteriores para detecção e prevenção de possíveis fraturas do tecido ósseo

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The increasing technological innovation and demand for materials with better properties boosts research into new materials and new alloys. To do so, aluminum alloys are being developed, among them the AA7075-T6, having many applications in aerospace and military industries, machinery and equipment, molds for plastic injection and structures. To study and understand the properties, characteristics and especially the microstructure of the material, the metallographic preparation is essential. This paper presents new methodologies to achieve the metallography of samples of scrap alloy AA7075-T6, with emphasis on methods of polishing. For the five samples, the best results were those with specific grinding, the samples only going down on the sander. For polishing, the most effective method so far has been using the polishing cloth 16.3, of ATM enterprise, solution of diamond 3 μm, solution of diamond 1 μm, and colloidal solution of OP-S. For the etching, the reactive agent used was phosphoric acid (H3PO4) 85% P.A., as 90% in the proportion of distilled water to 10% acid. The best results were obtained in the attacks of 300 and 240 seconds, revealing the grain boundaries in most areas. Methodologies need more studies and more tests, but the results have proved to be satisfactory

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Due to the great impact caused by construction, the university has a major role in the development of alternative projects and studies aimed at sustainable development. This project presents the advantages and importance of building in a sustainable manner from the beginning to end of the Center of Experiences at UNESP, Rio Claro / SP. It will be presented alternative building materials that have high environmental performance and that bring the least negative impacts as possible. Providing a Center of Experiences through a sustainable building is in need of the university to renovate the new trends of society in which the construction is in harmony with the environment in which it is inserted. This sustainable building will serve as a model for students and residents of Rio Claro, since the building itself will serve as a way of learning to the audience goer, as well as for the other campuses of UNESP. Thus, this project will serve as a guide for decision makers facing the huge amount of building materials available in the market

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Exemplos da perturbação do meio ambiente pela ação humana são recorrentes. Frente a isto, fica evidente a necessidade de mudança deste quadro, pois áreas com alto valor ecológico são amplamente afetadas, prejudicando as interações entre animais e plantas, nas quais as aves se destacam, sendo elas um grupo com claro papel na dinâmica de ecossistemas e de fácil identificação. Em vários aspectos, o conhecimento científico pode ser visto como um grande aliado para esta mudança. Visando a formação de cidadãos, a Educação Ambiental mostra-se como um importante meio de conscientização. Neste contexto, este trabalho se dispôs a confeccionar um guia didático e um jogo educativo sobre as aves, destinados a alunos do 7º ano do Ensino Fundamental,, visando propiciar aprendizado durante a observação das mesmas. Os materiais foram propostos a partir de uma lista elaborada no presente estudo, que reuniu nove levantamentos realizados na Fazenda Experimental Edgardia, vinculada à Universidade Estadual Paulista - UNESP, Campus de Botucatu, SP, de 1992 a 2010. Uma primeira versão dos materiais foi confeccionada e avaliada por um grupo de alunos, possibilitando a produção de sua versão final

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This graduation project aims to study and analyze the reuse of solid waste projects in Civil Construction, checking the different factors such as economic viability, production processes, classification of the main materials, advantages and disadvantages, always seeking to guide themselves according Brazilian legislation establishing criteria for Waste Management of Construction. In addition, points are studied that prevent the expansion of recycling construction waste. It also offers needs improvements to the implementation of recycling to be carried out on a more expressive than current

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Introdução: A lesão mais comumente encontrada na população ativa é a entorse de tornozelo. Cerca de 40% destes casos continuam a manifestar sensação de instabilidade articular mesmo após a fase aguda da lesão, caracterizando a instabilidade funcional do tornozelo (IFT). A IFT está relacionada com déficits proprioceptivos e redução na capacidade de produção de força e potência muscular. Haja vista que o basquetebol é um esporte com grande incidência de lesões no tornozelo faz-se necessário o entendimento de métodos de avaliação de baixo custo, que possam contribuir para a prevenção deste tipo de lesão em atletas. Objetivo: Nesse sentido, o presente estudo, tem como objetivo identificar os parâmetros de torque, atividade eletromiográfica, senso de reposicionamento articular e a pontuação em teste funcional em jogadoras de basquetebol com tornozelo estável. Correlacionar os valores de torque, atividade eletromiográfica e do senso de reposionamento articular com a pontuação dos testes funcionais em individuos saudáveis. Método: Participaram deste estudo 6 atletas do gênero feminino praticantes do basquetebol com idade entre 18 e 25 anos. As voluntárias realizaram os seguintes testes: torque isocinético concêntrico em inversão (INV) e eversão (EVE) nas velocidades de 60º e 120º, cinco testes funcionais e teste de reposicionamento articular com os ângulos-alvo de 10º e 20º de inversão. Após a verificação da normalidade de distribuição dos dados com o teste Shapiro-Wilk, utilizou-se o teste de Correlação Spearman para verificar a correlação dos testes funcionais com o pico de torque, o sinal EMG e o reposicionamento articular. Resultados: Não foi encontrados resultados esperados no estudo, exceto na correlação negativa para os valores de RMS do TA na velocidade de 120º nas contrações isocinética...(Resumo completo, clicar acesso eletrônico abaixo)

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In this work, the influence of modifications of the cp-Ti and Ti 6Al 4V alloy, by treating the surface with NaOH and depositing titanium oxide and hydroxyapatite by sol-gel method, on their biocompatibility was studied. The coatings were characterized by scanning electron microscopy and X-ray diffraction which showed that the coatings on Ti 6Al 4V are better than on cp-Ti. Adhesion tests showed that adhesion strength of the coatings on cp-Ti substrate is less than on Ti 6Al 4V as well as cytotoxicity for L929 fibroblast cells is higher

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Nowadays, bamboo is being studied because of their strength properties according with their specific mass and speed of growth, which makes it an important alternative as a new resource that will help reduce pressure on forests and helpping them favoring the minimization of uncontrolled deforestation in many regions of Brazil. This study aimed, in general, to analyze physical and mechanical properties of the material with the divulgation of its potential for industrial application. To do so, in this research were determined in relation to the physical properties, moisture content, dimensional stability and the apparent densities and the mechanics and basic, just a tension parallel to grain, in order to observe the interference of various kinds of treatments (chemical, thermal and natural) on the strength and modulus of elasticity in this request. The species used was the Guadua angustifolia, a species native of Brazil. All tests were performed at Universidade Estadual Paulista - Campus Experimental Itapeva in the laboratory of Materials Properties. The methodology used for testing of moisture, density and tension parallel to grain were based on NBR 7190/1997 for the wood, and dimensional stability tests were based on much the same as in COPANT 462/1972 (South American) . The preservative treatments conducted followed the recommendation of each manufacturer. The values obtained in tests of physical properties were satisfactory especially with respect to density and dimensional stability analyzed by the coefficient of anisotropy, showed that, compared to wood, excellent quality for the shrinkage test, obtaining a coefficient of 1.2. With respect to parallel tensile tests to fibre results showed, in most cases, that test specimens with the presence of us have lower values of resistance and modulus of elasticity when compared with those without us. In the treatment of thermal-treatment there was an apparent treatment there was an apparent increase in...