Uplift
Mostrando 13-24 de 36 artigos, teses e dissertações.
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13. Phylogeographical analysis of neotropical Rhagoletis (Diptera: Tephritidae): did the Andes uplift contribute to current morphological differences?
Neotropical Rhagoletis species are arranged in four groups: nova,psalida,striatella and ferruginea, which include 18 species. On both sides of the Andes, the evolution of morphological differences among these groups has been suggested to be related to the Andes uplift process. In order to test this hypothesis, a phylogenetic analysis of morphological and mol
Neotropical Entomology. Publicado em: 2008-12
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14. The historical biogeography of Pteroglossus aracaris (Aves, Piciformes, Ramphastidae) based on Bayesian analysis of mitochondrial DNA sequences
Most Neotropical birds, including Pteroglossus aracaris, do not have an adequate fossil record to be used as time constraints in molecular dating. Hence, the evolutionary timeframe of the avian biota can only be inferred using alternative time constraints. We applied a Bayesian relaxed clock approach to propose an alternative interpretation for the histor
Genetics and Molecular Biology. Publicado em: 19/11/2008
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15. Behavior of different piles, conducted in diabasic soil, submited to uplift efforts / Estudo do comportamento a tração axial de diferentes tipos de estacas em solo de diabasio da região de Campinas/SP
This research presents the behavior of different kinds of piles conducted in unsaturated diabasic porous soil submitted to uplift forces. For this research there were built the follow piles: three instrumented root piles with 12m length and 410mm of nominal diameter, one root pile with nominal diameter of 310mm and 23m length, two metallic piles type W250x32
Publicado em: 2008
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16. Avaliação da resistência à corrosão de aços IF revestidos com zinco e ligas de zinco-ferro destinados à industria automobilística
One of the most important changes in the last twenty years regarding steel application as a structural element, was the use of zinc and zinc-iron steel coated products for situations which require a major corrosion resistance. The consumer and competitor pressures responsible for the upsurge in the use of galvanized steel, which was experienced in the 1980s,
Publicado em: 2008
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17. Caracterização tectono-estratigráfica da sequência transicional na sub-bacia de Sergipe
This thesis deals with the tectonic-stratigraphic evolution of the Transitional Sequence in the Sergipe Sub-basin (the southern segment of the Sergipe-Alagoas Basin, Northeast Brazil), deposited in the time interval of the upper Alagoas/Aptian stage. Sequence boundaries and higher order internal sequences were identified, as well as the structures that affec
Publicado em: 2008
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18. Theoretical model to control on site the uplift capacity of helical screw piles embedded in sandy soil / Modelo teórico para controle da capacidade de carga à tração de estacas metálicas helicoidais em solo arenoso
Empirical correlations between installation torque and uplift capacity of helical screw piles are routinely used as a procedure for quality control on site of this type of foundation. In this work, a theoretical model of the relationship between uplift capacity and installation torque of deep helical screw piles in sand was presented to be used as a quality
Publicado em: 2007
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19. Gephysical Characterization of the Araguainha impact structure, MT/GO. / Caracterização geofísica da estrutura de impacto de Araguainha, MT/GO
Araguainha is the largest and the best-exposed complex crater of South America, formed in horizontal sediments of the Paraná Basin. Its portentous structure with 40 km in diameter and 25 km of transient cavity reveals a negative contrast of density and magnetic susceptibility in the central uplift. That feature allows to infer a limit of physical property b
Publicado em: 2007
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20. Tectônica rúptil meso-cenozóica na região do Domo de Lages, SC / Meso-cenozoic brittle tectonics of the Lages Dome, SC
This study was focused on the meso-cenozoic tectonic evolution of the Domo de Lages region (south Santa Catarina State, Southern Brazil), through the analysis of brittle structures affecting sedimentary and igneous rocks, morphometric parameters, drainage network and main geomorphological features. Located in the border of the Paraná sedimentary basin, the
Publicado em: 2007
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21. Análise numérica do comportamento estrutural e da resistência de terças de aço restringidas pelas telhas / Numerical analysis of cold-formed purlin-sheeting systems focused on the structural behavior and strength
The structural behavior of purlin-sheeting system is complex and the complete analysis should consider the physical and geometrical nonlinearity, as well as the influence of the purlin-sheeting contact and connection. The brazilian code NBR 14762:2001 provides a design procedure to consider the interaction between a purlin or girt connected to the sheeting (
Publicado em: 2007
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22. Caracterização mineralógica e petrológica da ocorrência de dickita em reservatórios rasos da Bacia do Recôncavo, Bahia : implicações para a evolução da bacia e do sistema diagenético
Os arenitos fluviais e eólicos da Formação Sergi (Jurássico – Cretáceo) são os reservatórios mais importantes da Bacia do Recôncavo, nordeste do Brasil. Um estudo detalhado utilizando Microscopia Eletrônica de Varredura, Microscopia Ótica, Difração de Raios-X e Espectroscopia de Infravermelho revelou a ocorrência de dickita, um argilomineral i
Publicado em: 2007
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23. Verificação da eficácia dos sistemas de vedação e drenagem em fundações de barragens de concreto / Grouting and drainage curtains efficacy verification in concrete dam foundations
One of the biggest problems for hydraulic works safety is the uplift pressure. The execution of grouting, associated with drainage, is very important to control seepage through concrete dam foundations. Therefore, appropriate means to check the efficiency of those systems are essential for dam safety evaluation. Most of the uplift pressure criteria used nowa
Publicado em: 2006
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24. A interação entre os eventos tectônicos e a evolução geomorfológica da Serra da Bocaina, Sudeste do Brasil / The interaction between tectonic events and the landscape evolution of Bocaina Ridge, Southeastern Brazil
The Bocaina Ridge landscape is strongly controlled by both ductile and brittle structures related to the Ribeira Belt (Brasiliano Orogeny ca. 790-480Ma) and also to the mesozoic-cenozoic reactivations. The rocks were subdivided in four tectonic terrains accreted in the brasiliano collisional stages. The most prominent structures related to these collisions a
Publicado em: 2006