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Meios granulares e experimentos simples para a sala de aula
(Sociedade Brasileira de Física, 2008)
Nos últimos anos houve um grande aumento da atividade experimental e teórica no estudo das propriedades dos materiais granulares. Este artigo apresenta uma breve revisão da literatura sobre este tema e sugere experimentos ...
Dynamical effects in the segregation of granular mixtures in quasi 2D piles
(Elsevier, 2015-01)
The dynamics of segregation, mixing and layering is studied during the build-up of quasi-2D piles of two different species of grains of different diameters (i.e. 1 mm glass beads and either 3 mm glass beads or 3.1 mm ...
Engarrafamento e segregação em empilhamentos abertos de grãos
(Universidade Federal de Minas GeraisUFMG, 2013-04-02)
The study of discharges of two-dimensional granular piles with open boundaries revealed clues of a jamming transition and an effect of segregation mixtures of grains. The study was carried out by means of computer simulations, ...
Segregation in a model system for tapped wet disks in two dimensions
(Springer, 2015-11-30)
The problem of segregation of mixtures in a column of wet disks subjected to tapping is studied through a simple model that simulates, through a pseudo-dynamics algorithm, the formation of the packing and the successive ...
Sudden chain energy transfer events in vibrated granular media
(AMER PHYSICAL SOC, 2011-02-22)
In a mixture of two species of grains of equal size but different mass, placed in a vertically vibrated shallow box, there is spontaneous segregation. Once the system is at least partly segregated and clusters of the heavy ...
Characterization of the energy bursts in vibrated shallow granular systems
(2012)
We study the recently reported energy bursts that take place in a granular system confined to a vertically vibrated shallow box containing two types of grains of equal size but different mass (Rivas in Phys Rev Lett ...
Estudo da segregação de dopantes no contorno de grão e sua influência nas propriedades elétricas de cerâmicas à base de 'SN''O IND.2'
(Universidade Estadual Paulista (Unesp), 2004-07-21)
O objetivo deste projeto foi estudar o efeito da segregação de dopantes em cerâmicas à base de SnO2 obtidas pelo método de mistura de óxidos para verificar como a segregação dos dopantes para o contorno de grão influencia ...
Estudo da segregação de dopantes no contorno de grão e sua influência nas propriedades elétricas de cerâmicas à base de 'SN''O IND.2'
(Universidade Estadual Paulista (Unesp), 2004-07-21)
O objetivo deste projeto foi estudar o efeito da segregação de dopantes em cerâmicas à base de SnO2 obtidas pelo método de mistura de óxidos para verificar como a segregação dos dopantes para o contorno de grão influencia ...
SnO 2 ceramics with low electrical resistivity obtained by microwave sintering
(2011-08-01)
The main aim of this study was to develop dense and conducting SnO 2 ceramics without precipitated phases on the grain boundaries, which was verified using field emission scanning microscopy (FE-SEM) coupled with an ...
SnO 2 ceramics with low electrical resistivity obtained by microwave sintering
(2011-08-01)
The main aim of this study was to develop dense and conducting SnO 2 ceramics without precipitated phases on the grain boundaries, which was verified using field emission scanning microscopy (FE-SEM) coupled with an ...