Accelerated Failure Test
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Effects of different surface treatments and accelerated artificial aging on the bond strength of composite resin repairs
The purpose of the present study was to assess the bond strength of composite resin repairs subjected to different surface treatments and accelerated artificial aging. 192 cylindrical samples (CSs) were prepared and divided into 24 groups (n = 8). Half of the CSs were stored in water for 24 h, and the other half were subjected to C-UV accelerated aging for n
Brazilian Oral Research. Publicado em: 2011-12
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2. Failure analysis of the polymeric external layer of the umbilical cables. / Análise de falha da camada polimérica externa de cabos umbilicais.
In the present work is proposed a method to establish a failure criterion of the polymeric external layer of umbilical cables used in offshore operations. The proposed method is based on the determination of the increment of the quantity of absorbed water by the polymeric external layer of the cable due to deterioration caused by cyclic loads and the aging p
Publicado em: 2007
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3. Hazard models on survival analysis / Modelos de riscos aplicados à análise de sobrevivência
Assuming special suppositions for the hazard function have been the strategy used for many authors in order to guarantee general and Pexible models for survival and reliability data. The present thesis considers two classes of hazard models, with the basic objective of proposing more Pexible models, studying their properties and proposing possible comparison
Publicado em: 2006
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4. Response of Hypersensitive Mice to the Footpad Injection of Living Homologous or Heterologous Mycobacteria: Preliminary Report
Mice sensitized by the injection of viable mycobacteria into one of the hind footpads responded to a second injection of mycobacteria (3 to 4 weeks later), introduced into the contralateral foot, with a degree of footpad swelling that was both accelerated and exaggerated beyond that observed after the first inoculation. The degree of specificity of this reac
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5. The mammalian oocyte orchestrates the rate of ovarian follicular development
The development of both the mammalian oocyte and the somatic cell compartments of the ovarian follicle is highly coordinated; this coordination ensures that the ovulated oocyte is ready to undergo fertilization and subsequent embryogenesis. Disruption of this synchrony results in oocyte developmental failure. Communication between the oocyte and companion so
The National Academy of Sciences.
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6. Ventricular outflow tract reconstructions with cryopreserved cardiac valve homografts. A single surgeon's 10-year experience.
OBJECTIVE: From January 1, 1985 through December 31, 1994, one surgeon implanted cryopreserved valved homografts into 149 patients--65 since December 1988. This latter series (II) was accomplished in a single hospital, facilitating patient follow-up with biannual echocardiograms. Analysis of these 65 patients is the primary focus of this report; the indicati