Short Columns
Mostrando 13-24 de 52 artigos, teses e dissertações.
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13. Experimental study about the fire effect in short composite column of steel and concrete / Estudo experimental do efeito do fogo em pilares mistos de aço e concreto
The use of circular hollow steel filled with concrete as columns are of great importance in the structural area, because it allows steel tube and concrete working together, providing a greater capacity resistant and a longer fire exposure, in relation to the same materials analyzed separately. This work will provide technical information for understanding th
Publicado em: 2008
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14. Desenvolvimento de software para projeto e simulação da operação de uma unidade de remediação de águas subterrâneas contaminadas por BTEX.
Groundwater contamination has become a serious environmental problem nowadays. Among the different sources of contamination, leaking from tanks of fuel storage, mainly from fuel stations, is one of the most hazardous, due to the presence of toxic compounds as benzene, toluene, ethylbenzene and xylenes (BTEXs). Among the 35.585 fuel stations in Brazil, 51% ha
Publicado em: 2007
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15. Efeito do tempo de residência sobre a recuperação metálica da flotação colunar reversa de minério de ferro
The goal of this work was to investigate the effect of residence time of the particles in the collection zone of the column over the recovery in reverse flotation of iron ore. It was studied the variation of floatable (recovery) with the feed and height rate of the column. In spite of the enormous number of columns already built in Minas Gerais, very little
Publicado em: 2006
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16. Immediate and time-dependant behavior of RC columns strengthened by high-performance concrete jackets / Comportamento resistente imediato e ao longo do tempo de pilares reforçados por meio de encamisamento com concreto de alto desempenho
The thesis presents an experimental investigation on the behavior of RC columns strengthened by high-performance concrete jackets. The main objectives are to analyze the immediate and time-dependant behavior of the elements and the preloading effect in its load capacity and deformability. Twenty columns were tested varying the transversal section shape (circ
Publicado em: 2003
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17. Interhemispheric connections between primary visual areas: beyond the midline rule
In the last five years, a number of detailed anatomical, electrophysiological, optical imaging and simulation studies performed in a variety of non-human species have revealed that the functional organization of callosal connections between primary visual areas is more elaborate than previously thought. Callosal cell bodies and terminals are clustered in col
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-12
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18. ANÁLISE TEÓRICA E EXPERIMENTAL DE COLUNAS DE CONCRETO ARMADO COM BAMBU / THEORETICAL AND EXPERIMENTAL ANALYSIS OF BAMBOO REINFORCED CONCRETE COLUMNS
Nowadays the world faces a serious environmental crisis and high poverty rates. Intending to minimize these problems, this thesis proposes the alternative usage of bamboo as reinforcement on columns of reinforced concrete, substituting steel in civil constructions. The reinforced concrete columns performance is described through a bibliographical revision an
Publicado em: 2002
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19. Desenvolvimento de tecnicas para montagem de um sistema especialista aplicado a engenharia de separações
A síntese otimizada de processos é uma preocupação constante do engenheiro químico. Este sempre deve ter disponível o maior número de informações possível para que a sua tomada de decisão seja a mais correta do ponto de vista econômico, ambiental e de obtenção dos produtos desejados. Neste trabalho de tese, enfoca-se a síntese de processos de
Publicado em: 2001
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20. Theoretical and experimental study of high strength concrete filled steel tubes / Estudo teórico-experimental de pilares mistos compostos por tubos de aço preenchidos com concreto de alta resistência.
The use of concrete filled steel tubes especially in tall buildings is a tendency in several european, american and asian countries. The use of these members has several advantages: high resistance and ductility, saving of materials and labour, reduction of cross section dimensions and improvement in behaviour of the materials steel and concrete due the conf
Publicado em: 1999
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21. Modelo estaticos e dinamicos para o controle de colunas de destilação
Static short-cut and reduced order dynamic models are normally used for the design of control systems for distillation columns. In this work we avaliated the known static short-cut separation factor of the columns. On the other hand, we analized the generic reducde dynamic model of Skogestad and Morari, comparing the responce of this model for variations in
Publicado em: 1993
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22. Short Notes and Clinical Cases: Complete Degeneration of the Posterior Columns of the Spinal Cord with Chronic Polyneuritis in a Case of Widespread Carcinomatous Disease elsewhere
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23. Computer simulations of chondrocytic clone behaviour in rabbit growth plates.
The growth behaviour of chondrocytic clones in the cell columns of the proximal tibial growth plates of young rabbits was modelled in computer simulations. Simulations were performed, modelling either clones in large groups of columns or clones in one single column. The former were based on morphological data and measurements of cell columns from an earlier
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24. Segmental effects of epidural spinal cord stimulation in humans.
1. The segmental effects of spinal cord stimulation (SCS) were studied in twenty-four human subjects who had spinal cord stimulators implanted for the treatment of pain. The cathode was in the epidural space over the dorsum of the thoracic cord. 2. SCS generated action potentials in sensory, motor and mixed nerves which could be recorded with near-nerve elec