Defects Solids
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Caracterización de nanoestructuras sub-superficiales utilizando espectroscopía de aniquilación de positrones
Positron annihilation spectroscopy (PAS) has proved to be a powerful tool for the study of defects in solids due to its high sensitivity to the presence of defects such as vacancies, vacancy agglomerates or voids. Furthermore, PAS allows to identify and characterize each of these defects. There are different experimental variations of PAS technique such as p
Matéria (Rio J.). Publicado em: 2013-12
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2. Development of a laser ultrasound detection system for elastic characterization of materials and devices / Implementação de um sistema de detecção laser-ultra-som para caracterização de materiais e dispositivos
The work described herein focuses on the development of an optical system, based on heterodyne Mach-Zenhder interferometry, for detecting ultra-sound (and mechanical microvibrations) in devices and opaque solid materials. Detection of ultra-sound in those devices and materials reveals a variety of important and practical information, such as Elasticity Modul
Publicado em: 2008
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3. Desvendando a cor e a termoluminescência do topázio: um estudo dos defeitos e processos termicamente e opticamente estimulados no cristal natural / Unraveling the color of topaz and thermoluminescence: a study of defects and thermally and optically stimulated processes in natural crystal
O topázio [Al2SiO4(F,OH)2] é mais freqüentemente encontrado na natureza na forma incolor, a partir do qual gemas azuis vêm sendo produzidas comercialmente através da aplicação de radiação ionizante seguida de tratamentos térmicos. O topázio também exibe termoluminescência (ou luminescência termicamente estimulada) relativamente intensa, que é
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/06/2001
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4. Influencia dos niveis de grãos avariados de milho (Zea mays L.), na contaminação com aflatoxinas, no rendimento da moagem umida e em algumas caracteristicas do amido extraido
The corn wet milling industry like other com processors has generally the official classification with modifications or not as unique tool of quality control of their raw material. Com users associate too, the grain defects kinds defined for official classification e levels of presence the damaged grains in the com lot with presence, distribution and aflatox
Publicado em: 2001
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5. Condensed Matter Physics as a laboratory for gravitation and Cosmology
The geometric language of General Relativity is not normally related to Condensed Matter (CM) Physics since it is the electromagnetic and not the gravitational interaction that dominates the physics of CM systems. What points in common would then CMP have with Cosmology and the dynamics of objects in a gravitational field? There is at least one that is very
Brazilian Journal of Physics. Publicado em: 2000-06
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6. Estudo de latas eletrossoldadas para acondicionamento de ervilha, extrato de tomate e pessego em calda
The purpose of this study was to evaluate the welding quality and the performance of welded cans relative to the package/food interaction by means of storage tests in the packaging of three types of food products: peas, tomato paste and peaches in syrup. For each kind of product, two package alternatives were analysed as follows: one with the variation of th
Publicado em: 1998