Fractures Stress
Mostrando 13-24 de 51 artigos, teses e dissertações.
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13. Self-reinforced bioresorbable polymer P (L/DL) LA 70:30 for the manufacture of craniofacial implant
The importance of self-reinforced bioabsorbable polymers has been growing due to their use in orthopedic and dental implants. Bioabsorbable polymeric implants manufactured only by the processes of injection or extrusion without the post processing of self-reinforcing leave a great deal on presenting an appealing alternative in terms of the mechanical strengt
Polímeros. Publicado em: 28/08/2012
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14. Verificação à fadiga de pontes rodoviárias mistas (aço-concreto) / Fatigue analysis of composite highway bridges
Steel and composite highway bridges (steel-concrete) are currently subjected to dynamic actions, for example, variable magnitude due to vehicles traffic on the deck rough pavement. These dynamic actions can generate the fractures nucleation or even their propagation on the structure. The correct consideration of these aspects pointed out to an analysis metho
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2009
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15. Formulação dual em mecânica da fratura utilizando elementos de contorno curvos de ordem qualquer / Dual boundary element formulation in fracture mechanics using curved element of any order
This work presents the dual boundary element formulation applied to linear crack problem. The goal of this research is the evaluation of stress intensity factor for two-dimensional crack problem using three different techniques, which are: the technique of correlation of displacements, the technique based on the state of tension at the crack tip and J integr
Publicado em: 2009
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16. Características epigenéticas do depósito de cu-au chapada, arco magmático de goiás
The Cu-Au Chapada deposit is located from 8km of Alto Horizonte-GO. The geologic picture is dominated by metavulcanic sedimentary sequences that integrate the Neoproterozoic Magmatic Arc of Mara Rosa, located in the central portion of the Tocantins Province. The framework of the deposit is represented by an antiform whose core is composed by association of t
Publicado em: 2009
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17. Adição de complexo vitamínico na dieta hídrica de frangos e seus efeitos no estresse pré-abate e qualidade de carne / Addition of a vitamin complex in a drinking water for poultry and the effects in the stress before slaughter and in meat quality
The present work was lead in commercial poultry integration from Cooperfrango and their slaughterhouse, located in Descalvado- São Paulo State - Brazil. The analysis was conduced in the Center of Research and Development of Meats of the Institute of Food Technology in Campinas - São Paulo - Brazil. The experimental phase was carried through the period betw
Publicado em: 2007
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18. Biomechanics analysis of restored teeth with cast intra-radicular retainer, with and without ferrule / Análise biomecânica de dentes restaurados com retentor intra-radicular fundido, com e sem férula
The aim was to evaluate the influence of variations in the radicular ferrule format given by the casing core on stress developed in the root in a three-dimensional model of one upper second premolar submitted to four load conditions: wedge, vestibular lever, proximal lever and torsion. Six models were built according the average dimensions obtained from the
Publicado em: 2007
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19. Evaluation of the resistance to the fracture of temporary fixed prostheses implant-supported varying the extension of the cantilever and the fiber type: glass fibers and poliaramid fibers / Avaliação da resistência à fratura de próteses fixas provisórias implanto-suportadas variando o comprimento do cantilever e o tipo de fibra: fibras de vidro e fibras de poli(aramida)
In the oral rehabilitator treatment, the provisory restorations have extremely importance. The resistance and durability of materials used in the execution are critical, especially in extended treatments and in vast toothless spaces. The goal of this work was to demonstrate the resistance and the types of fracture of specimens that simulate a fixed prosthesi
Publicado em: 2007
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20. Effect of intraradicular post and the presence of ferrule on the resistance of endodontically treated teeth / Efeito do pino intra-radicular e da presença de férula na resistência de dentes tratados endodonticamente
O objetivo deste trabalho foi avaliar a resistência à fratura de dentes tratados endodonticamente restaurados com diferentes pinos intra-radiculares, sem pinos intra-radiculares e diferentes quantidades de remanescente dentário coronal. Para a realização deste trabalho, foram selecionados 60 caninos humanos recentemente extraídos. Todos os dentes foram
Publicado em: 2007
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21. Significado morfotectônico dos planaltos isolados da Bocaina / Morphotectonics of the isolated plateaus of Bocaina
The Bocaina Plateau is situated on the eastern flank of the Continental Rift of Southeastern Brasil (CRSB), in the highest portions of the Serra do Mar, reaching more than 2000 meters in altitude. This and the Campos do Jordão Plateau comprise the high blocks of crystalline massifs of Southeastern Brasil. The Bocaina presents a succession of NW-SE topograph
Publicado em: 2007
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22. "Valor disgnóstico e prognóstico dos métodos de imagem na fratura de estresse da tíbia: correlação clínico-radiológica" / Diagnostic and prognostic value of image methods in tibia stress fractures : clinical-radiological correlation
A major problem in athletes with stress fractures is the length of resting time required for complete recovery. No imaging tool has been capable of offering objective data regarding the appropriate recovery time in athletes with stress fractures. Two groups of athletes were included in our study: Group I consisted of 21 athletes with clinical suspicion of ti
Publicado em: 2006
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23. Propriedades mecanicas de resinas acrilicas para base de protese antes e apos metodos de reparos / Mechanical properties of denture base acrylic resins before and after repair methods
Fractures by impact and flexural action are the main problems described by denture users and dentists. Attempting to solve this problem, modifications on the chemical composition of the acrylic resins as co-polymer inclusion, cross linking agents addition and rubber particles incorporation in the form of butadiene styrene have been described as effective and
Publicado em: 2006
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24. Resistencia mecanica e tenacidade a fratura do osso cortical bovino / Mechanical strength and fracture toughness of cortical bovine bone
Stress fractures are caused by fatigue exercising in bones that occur in young health people who are submitted to rigorous physical training. It?s known that its path physiology is characterized by initiation and propagation of microcracks. Thus, the purpose of this study is to identify some of the mechanical properties of cortical bone that approach to the
Publicado em: 2006