Point Defects
Mostrando 13-24 de 276 artigos, teses e dissertações.
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13. Detecção de defeitos do tipo Resistive-Open em SRAM com o uso de lógica comparadora de vizinhança
The world we live today is very dependent of the technology advance and the Systemson- Chip (SoC) are one of the most important actors of this advance. As a consequence, the Moore s law has been outperformed due to this strong demand on the SoCs for growth, so that new silicon technologies has emerged along with new fault models that decreased the reliabilit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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14. Líquidos nemáticos e relatividade geral
In the mean 80´s, it was proposed that the rheologic properties of liquidcrystal could be obtained through affine transformation, in which the interaction potential of aspheric molecule is deformed to assume the ellipsoidal shape of potential liquid crystal´smolecular interaction. When this procedure is done point to point, the usuals derivatives donot get
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2010
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15. Goldenhar syndrome: clinical features with orofacial emphasis
OBJECTIVES: Goldenhar syndrome (GS) is a relatively common developmental disorder characterized by craniofacial anomalies in association with vertebral, cardiac, renal, and central nervous system defects. This paper describes GS features with special emphasis on oral characteristics. MATERIAL AND METHODS: The clinical features of 6 patients with GS aged 3 mo
Journal of Applied Oral Science. Publicado em: 2010-12
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16. Fatigue properties and micromechanisms of fracture of an AlSiMg0,6 cast alloy used in diesel engine cylinder head / Propriedades de fadiga e micromecanismos de fratura da liga de aluminio-silicio AlSi7Mg0,6 utilizada em cabeçote de motor diesel
The increase usage of casting aluminum-silicon alloys in the automotive industry is due to reduce weight, fuel consumption, and emissions level. This includes the aluminum-silicon cast alloy EN AlSiMg0.6 (ASTM A357.0) which is used to make Diesel engine cylinder head. It is important to know the impact on the integrity and reliability of this component in th
Publicado em: 2009
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17. Potencial osteogênico in vivo de uma nova vitrocerâmica bioativa (Biosilicato)
Bioactive materials have the ability to bond and to integrate with bone tissue by forming a biologically active bonelike apatite layer, which has chemical and structural properties equivalent to the mineral phase of living bone. This process is determined by chemical reactions, whose products also influence the attachment, the proliferation, the differentiat
Publicado em: 2009
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18. Health-related quality of life of children and adolescents with meylomeningocele / Qualidade de vida relacionada à saúde em crianças e adolescentes com mielomeningocele
Myelomenigocele (MM) is the most common and disabling disorder of neural tube defects. It is associated to several health problems and to motor and sensitive disabilities. This condition may impair patients health-related quality of life (HRQL). However, it is not established how different neurological lesion levels and functional ambulation influence HRQL.
Publicado em: 2009
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19. Quality of coffee (Coffea arabica L.) pre-processed in coconut / Qualidade de café (Coffea arabica L.) pré-processado por via seca
The maturity stage physiological of coffee fruit after their harvest may influence on the physiological quality of grains and the final quality of coffee drink, mainly because of their peculiarities. The objective of this study was to verify some aspects of pre-process of coffee in coconut, harvesting at different percentages of cherry maturation stage, rela
Publicado em: 2009
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20. Monitorização e localização de defeitos na soldagem tig através do sensoriamento infravermelho
This work presents, in an exploratory form, the use of infrared emissions of the TIG arc as a parameter for process monitoring, detection and localization of defects or discontinuity during welding. A infrared sensor was used for focalizing part of the arc and weld pool and transformed the intensity of infrared radiation presented in the surrounding regions
Publicado em: 2008
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21. Simulação do crescimento de filmes sobre metais. O caso voltamétrico
In this work the anodic film growth on metals has been studied, under voltammetric conditions by simulation. It was supposed that: a) the films are ultrathin, i.e., the concentration gradient contributions for the ionic transport throughout the film are much lower than those of the electric field; b) the ionic transport throughout the film obeys an ohmic mod
Publicado em: 2008
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22. Clinical, genetic and molecular study of Rokitansky-Mayer-Küster-Hauser syndrome and related conditions / Estudo genético-clínico e molecular da síndrome de Rokitansky-Mayer-Küster-Hauser e condições afins
Background: Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome, comprising utero-vaginal atresia in otherwise phenotypically normal women with a normal karyotype (46,XX), has an incidence of about 1/5,000 among newborn girls. Anomalies of the genital tract range from upper vaginal atresia to total Müllerian agenesis (congenital absence of the Fallopian tubes,
Publicado em: 2008
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23. Considerations about the influence of upper arms positioning on myocardial perfusion scintigraphy results / Considerações referentes à influência do posicionamento dos membros superiores sobre o resultado da cintilografia de perfusão do miocárdio
Contrary to the advances in imaging technology for nuclear cardiology applications, we keep using the same often uncomfortable and sometimes impracticable patient position- supine with arms raised above the head (C). We tested another position modality: supine with arms down at the sides of the trunk (T). The purpose of this study was to verify if the functi
Publicado em: 2008
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24. Study of thermoluminescence response of SolonÃpole (CE) quartz sensitized by heat treatments and high doses of gamma radiation / Estudo da sensibilizaÃÃo da resposta termoluminescente do quartzo de SolonÃpole (CE) por tratamentos tÃrmicos e altas doses de radiaÃÃo gama
A sensibilizaÃÃo da resposta termoluminescente (TL) do quartzo natural foi muito estudada visando a dataÃÃo arqueolÃgica e a dosimetria retrospectiva. Embora a curva de emissÃo TL do quartzo apresente vÃrios picos, apenas a sensibilizaÃÃo do pico que ocorre a aproximadamente 100ÂC foi investigada em profundidade. Trabalhos recentes mostraram que a
Publicado em: 2008