1000 resultados para ESTRUTURA DA GALÁXIA
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Agronomia - FEIS
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Pós-graduação em Zootecnia - FCAV
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Pós-graduação em Odontologia Restauradora - ICT
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Ichthyofaunistic studies aims to broad the knowledge of composition, abundance and distribution of species in certain areas, and when possible, to infer patterns of distribution, as well as extrinsic factors that affect these patterns in space and time. The Paranapanema River suffers the impact of the construction of hydroelectric power plants in cascade system along its main channel, changing the characteristics of lotic to lentic and semi-lentic. These changes affect the entire biocenosis and the surroundings of the reservoir and, in particular, the fish fauna. In this context, the aim of this study was to characterize the fish assemblage in two lakes and stretches of the main channel, located near the outfall of the Paranapanema River, Jurumirim reservoir area, comparing them to their composition and structure, using ecological indices as tools. Fish were caught every three months from April 2011 to January 2013, using gill nets of various mesh openings in four stretches: Environment 1 - Calha Sete Ilhas, Environment 2 - Calha Poço da Pedra, Environment 3 - Lagoa Sete Ilhas and Environment 4 - Lagoa Poço de Pedra. After the capture, the specimens were identified and biometric analysis was performed (total and standard length weight). We captured 4,006 individuals belonging to four orders and 34 species, 31 native species and three non-native species. In abundance (n) and number of species (S), there was a predominance of Characiformes (57 %) followed by Siluriformes (31%). Overall, most of the species was constant concerning the frequency of capture. The five most representative species in abundance were Schizodon intermedius, Cyphocarax modestus, Pimelodus maculatus, Hoplosternum littorale and Serrasalmus maculatus, contributing with 60% of total individuals captured. Regarding the stretches, these species present diversity (H'), evenness (E), dominance (D) and richness (d) of similar species, since the abundance was higher in ...
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The process of knowledge construction is associated with physical or mechanical view of the phenomenon. In mechanical engineering courses should supplement their courses with physical or virtual learning devices to aid visualization of these phenomena. For the purpose of improving the mechanical engineering department laboratory practice was developed, through a project, a didactic device a trellis. The purpose of this work is the detailed study by comparing the theoretical results with the experimental results collected through the specific strains collected in the Catman. The study was iniatially done with nodes made of aluminum, giving results with high errors not allowing a good conclusion of results. For best results were achieved an improvement of the structure with strict we support the lattice and, thus, further study and greater quality of lattice structure
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Pós-graduação em Engenharia Mecânica - FEG
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Pós-graduação em Biociências - FCLAS
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Pós-graduação em Biotecnologia - IQ
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The paper compares the evolution of the brasilian and chinese agriculture emphasizing the post II World War period. It tries to show the structural changes in the agriculture in both countries and characterizing the dynamics of them. For both countries, the effort of industrialization after 1945 meant to sacrify the agriculture to a second plan. In the 1970’ Brazil and China begin to modernize their agriculture and adjust it to new challangers put by the necessity of guarantee the food security. The paper concludes that, in spite of some present problems, both countries face adequately the defiance on their agriculture.
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Pós-graduação em Biotecnologia - IQ
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Pós-graduação em Biotecnologia - IQ
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Pós-graduação em Televisão Digital: Informação e Conhecimento - FAAC
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Pós-graduação em Agronomia - FEIS
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Pós-graduação em Biofísica Molecular - IBILCE