Mechanical Anchorage
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Mechanical and histological evaluation of a titanium device for orthodontic anchorage, placed with or without cyanoacrylate adhesive
RESUMO Objetivos: este estudo teve como objetivo realizar uma avaliação histológica de um mini-implante para ancoragem em Ortodontia. Avaliou-se, também, a carga de cisalhamento e o padrão de fratura imediatamente e após 30 e 60 dias da sua inserção, com ou sem o uso do adesivo N-butil-2-cianoacrilato. Métodos: noventa e seis mini-implantes (Arro
Dental Press J. Orthod.. Publicado em: 01/08/2019
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2. Efecto inhibidor del dióxido de germanio sobre el biofouling del puerto de Mar del Plata
ABSTRACT Marine biofouling on any new material immersed in seawater can lead to extra costs due to increased maintenance, or/and even mechanical wear, and/or biodeterioration that require costly antifouling measures. Fouling organisms growing on immersed manmade surfaces affect hulls, piers, buoys, aquaculture and pipes mainly. Following adsorption of a cond
Matéria (Rio J.). Publicado em: 05/03/2018
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3. Cartilage reconstruction using self-anchoring implant with functional gradient
This study presents an innovative and original biomaterial designed to substitute for articular cartilage and mimic its mechanical behavior, including elastic cushioning and the characteristics of fiber-reinforced gel. The material was composed of polyurethane and bioglass microfiber 45S5. It was designed to present a tribological surface to the cartilage of
Mat. Res.. Publicado em: 18/03/2014
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4. Resistência à tração de pinos de ancoragem isolados e pré-instalados : Influência da armadura de flexão e de cisalhamento / Tensile strenght of anchor bolts isolated and pre-installed - influence of the flexural and shear reinforcement
Pinos de ancoragem inseridos em concreto são empregados com a finalidade de permitir a fixação de elementos para a introdução de solicitações nas estruturas de concreto, viabilizando as ligações estruturais entre estruturas metálicas e a fundação de concreto, entre componentes pré-fabricados e na fixação de elementos de reforço. Neste trabalh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011
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5. Resistência à tração de pinos de ancoragem isolados e pré-instalados : Influência da armadura de flexão e de cisalhamento / Tensile strenght of anchor bolts isolated and pre-installed - influence of the flexural and shear reinforcement
Pinos de ancoragem inseridos em concreto são empregados com a finalidade de permitir a fixação de elementos para a introdução de solicitações nas estruturas de concreto, viabilizando as ligações estruturais entre estruturas metálicas e a fundação de concreto, entre componentes pré-fabricados e na fixação de elementos de reforço. Neste trabalh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011
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6. Estrutura e funcionamento dos espermatóforos de Doryteuthis plei (Mollusca: Cephalopoda) e reavaliação da reação espermatofórica dos cefalópodes / Spermatophore structure and functioning in Doryteuthis plei (Mollusca: Cephalopoda), and a reappraisal of the cephalopod spermatophoric reaction
Male coleoid cephalopods produce elaborate spermatophores, which are transferred to the female during mating. These spermatophores are capable of functioning autonomously and extracorporeally, undergoing complicated changes during the so-called spermatophoric reaction, i.e., a complex process of evagination of the spermatophoric tunics and membranes that, ul
Publicado em: 2010
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7. Beams of the concreto reinforced with strips of the Dendrocalamus Giganteus bamboo / Vigas de concreto armadas com taliscas de bambu Dendrocalamus Giganteus
The use of bamboo as a structural element has been studied for some years, presenting excellent results relating to its physical and mechanical characteristics. Therefore, some researches began in last decade?s studies to apply bamboo as reinforcement in concrete elements. In this sense, this work has intended to present solutions to most common problem in t
Publicado em: 2007
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8. Influence of the pilot hole preparation and screw frequency insertion of the implant on the insertion torque and pulling out resistance / Influência do preparo do orifício piloto e da freqüencia de colocação do implante no seu torque de inserção e resistência ao arrancamento
The aim of the study was to evaluate the influence of the diameter of the pilot hole and the frequency of screw placement on pullout out resistance and insertion torque of the pedicle screw. Pedicle screws of 5, 6 and 7mm of the USS system for vertebral fixation were inserted into wood, polyurethane, polyethylene and bovine bone. The pilot hole for screw ins
Publicado em: 2007
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9. Ensaios mecânicos e estudo histológico da interface dos implantes vertebrais / Mechanical and histological studies of the vertebral screw interface
Spine surgery has developed a lot in the last years because of the evolution of the fixation system. The behavior of a screw in the bone is still unknown in many ways. Because the screw is the anchor of sustentation, this work tries to find the answers involving the pedicle screw fixation. To reach this objective we developed this work based on mechanical an
Publicado em: 2006
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10. Sinalização celular durante aumento de tensão no coração : implicações no desenvolvimento de hipertrofia cardiaca : estudos em corações isolados
The mechanical input plays a major role in cardiac adaptive responses to hemodynamic overload. In addition of triggering the force-Iength mechanism and the homeometric autoregulation, the mechanical input activates signaling mechanisms involved on hypertrophic growth of cardiac myocytes, the hal1mark of themyocardial structural adaptation in response to sust
Publicado em: 2002
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11. Dissecting the Impact of Matrix Anchorage and Elasticity in Cell Adhesion
Extracellular matrices determine cellular fate decisions through the regulation of intracellular force and stress. Previous studies suggest that matrix stiffness and ligand anchorage cause distinct signaling effects. We show herein how defined noncovalent anchorage of adhesion ligands to elastic substrates allows for dissection of intracellular adhesion sign
The Biophysical Society.
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12. Morphology of Hensen's cells.
The cochleae of ten guinea-pigs were studied by transmission electron microscopy, scanning electron microscopy and optical microscopy, using specific techniques for staining fats. The study of Hensen's cells showed the existence of prominent lipid droplets in the apex and the third coil of the cochlea. Similar images were not found in the basal coil. Lipids