Multiple Failure Modes
Mostrando 1-8 de 8 artigos, teses e dissertações.
-
1. Effect of pre-heated dual-cured resin cements on the bond strength of indirect restorations to dentin
This study evaluated the effects of resin luting agents (LA) polymerized using increased temperature on the in vitro microtensile bond strength (mTBS) of indirect restorations to dentin. The occlusal dentin surfaces of 40 human third molars were exposed and flattened. The teeth were assigned to 8 groups (n = 5) according to the LA temperature (25°C o r 50°
Brazilian Oral Research. Publicado em: 2012-04
-
2. Avaliação in vitro do efeito do hidrogel de ascorbato de sódio e ácido ascórbico na resistência adesiva da resina composta ao esmalte dental bovino clareado com peróxido de hidrogênio 35% / In vitro evaluation of the effect of sodium ascorbate and ascorbic acid hydrogel in microshear bond strength of composite resin to bovine enamel bleached with 35% hydrogen peroxide
It is referred that the use of antioxidants may improve the decreased bond strength after bleaching treatment. The aim of this in vitro study was to evaluate the effect of 10% and 20% sodium ascorbate hydrogel and 10% ascorbic acid hydrogel applied for 15 minutes immediately after 35% hydrogen peroxide bleaching (HP) (Lase Peroxide Sensy-DMC). 45 bovine inci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011
-
3. On the effects of uncertainty on optimum structural design / Estudo do efeito de incertezas na otimização estrutural
In this study the effects of uncertainty on optimum structural design are investigated, by comparing three distinct formulations of a structural optimization problem. Such effects can be quantified in terms of failure probabilities and risk, or expected costs of failure. Deterministic Design Optimization (DDO) allows one the find the shape or configuration o
Publicado em: 2010
-
4. PRIORIZAÇÃO DOS MODOS DE FALHA DE EQUIPAMENTOS UTILIZANDO OS MÉTODOS DE ANÁLISE MULTICRITÉRIO PROMETHEE E FUZZY PROMETHEE / PRIORITIZATION OF FAILURE MODES OF EQUIPMENT USING THE METHODS OF MULTICRITERIA ANALYSIS PROMETHE AND FUZZY PROMETHE
Aiming to meet the criteria of availability and reliability required by the rules of the Brazilian electric sector, energy companies have increased the use of systems for monitoring and diagnosis. This allows the identification of prior evidence of abnormalities in the operational condition of substation equipment, enabling the practice of predictive mainten
Publicado em: 2009
-
5. Um modelo integrado de inferÃncia Bayesiana e processos Markovianos para anÃlise de sistemas reparÃveis sujeitos a reparo imperfeito via processo de renovaÃÃo generalizado
This dissertation deals with repairable systems submitted to imperfect repair, using a class of stochastic models known as Generalized Renewal Process (GRP), which allows to insert flexibility to approach diverse levels of repair. For such objective, is proposed an non-homogeneous Markovian process model to analyze the dynamic behavior of complex systems, us
Publicado em: 2006
-
6. Desenvolvimento de modelos mecânico-probabilísticos para estruturas de pavimentos de edifícios / Development of mechanical-probabilistic models for reinforced concrete building floor structures
Neste trabalho, são desenvolvidas novas técnicas aproximadas de análise de confiabilidade para grelhas de concreto armado levando-se em consideração as probabilidades de falha de vários modos importantes. Realiza-se um acoplamento entre os métodos de Monte Carlo, elementos finitos e procedimentos de otimização para considerar esses modos de falha im
Publicado em: 2004
-
7. Antibodies to Tyvelose Exhibit Multiple Modes of Interference with the Epithelial Niche of Trichinella spiralis
Infection with the parasitic nematode Trichinella spiralis is initiated when the L1 larva invades host intestinal epithelial cells. Monoclonal antibodies specific for glycans on the larval surface and secreted glycoproteins protect the intestine against infection. Protective antibodies recognize tyvelose which caps the target glycan. In this study, we used a
American Society for Microbiology.
-
8. Cell death in sepsis: a matter of how, when, and where
Dysregulated cell death in several tissues is intimately involved in the pathogenesis of sepsis and contributes to multiple organ failure. Whether cell death during sepsis occurs by necrosis or apoptosis may depend on the cell type as well as the disease stage and is therefore a matter of intense debate. While lymphocyte apoptosis contributes to immunosuppre
BioMed Central.