1000 resultados para Traços biológicos
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Fonoaudiologia - FFC
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Pós-graduação em Química - IQ
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Pós-graduação em Agronomia (Proteção de Plantas) - FCA
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This study aimed to develop, implement and evaluate the performance of a new type of bioreactor for anaerobic treatment of wastewater using different filling materials like trickling filters post-reactor. This bioreactor has mixed characteristics of the UASB reactors and horizontal flow from the point of view of removal of BOD (Biochemical Oxygen Demand) ssed (settled solids), TS (Total Solids), SS (Suspended Solid), SD (Dissolved Solids) and turbidity. The experimental model consists of a bioreactor with a volume of 12 m³, 2/3 filled by fluidized bed and 1/3 for fixed. The fluidized bed is made of polystyrene plates used as a system percolation and compartmentalized trickling filters, where each compartment was filled with a support medium with different characteristics (gravel number 4, plastic rings of polystyrene, PET and HDPE) . In addition, the output of a filter system was installed three entries filled with activated carbon. The bioreactor was installed in private residence in the city of Igarapava-SP (20° 02'40.18"S and 47° 45'01.36" W). The system was highly efficient as the removal of organic contaminant load 92% on average reducing the BOD, a significant result when compared to other anaerobic systems. For the other parameters, the mean reduction was 96% for turbidity, 99% ssed, 67.5% ST, 57% SD and 88% of SS. As for its operation the system was capable of operating in continuous flow without the need for maintenance during the entire period of evaluation and without energy, as it operates taking advantage of the natural slope of the terrain where it is installed. The environmental impacts were minimized due to the preservation of local vegetation allowing the ecosystem to remain unchanged beyond the prototype was completely sealed preventing exhalation of odors and therefore not causing inconvenience to neighboring populations. Given these facts it was concluded that the prototype is shown to be highly feasible deployed as a new alternative for treatment of sewage in rural and urban settings (individual homes, condos, farms, ranches, etc.) Due to ease of design and operability, and sustainability at all stages of execution.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Microbiologia Agropecuária - FCAV
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Pós-graduação em Ciências Biológicas (Biologia Celular e Molecular) - IBRC
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This paper aims to investigate the conceptions about the relation between genotype and phenotype of Biological Sciences Degree students who take part in a research group in Epistemology of Biology. In an initial data collection, the presence of ideas based on a restricted to genes and environment relation - without considering the organism and its life history - became evident . However, during the group discussions on the topic there were other statements involving other concepts, such as: molecular interactions, chance, organism and Developmental Biology. The analysis of conceptual (re)constructions that emerged in the group allowed the proposition and the development of an explanatory model for the relation between genotype and phenotype.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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A partir de um estudo de caso, aborda-se a experiência de adoção de uma criança de quatro meses de idade por um casal com três filhos biológicos. Os dados obtidos por entrevistas semiestruturadas mostraram que a parentalidade adotiva foi experienciada em meio a temores/fantasias de perda/roubo da criança adotada. Isso pode ser associado ao modo como foi realizada a adoção, sem os cuidados preconizados pelo Estatuto da Criança e do Adolescente e a nova lei de adoção. O processo de adoção figurou para os adotantes como fonte de intensa carga emocional, permeada por sentimentos ambivalentes que merecem atenção dos profissionais da Psicologia. Os resultados ilustram a necessidade de atenção psicossocial-jurídica a adotantes, adotado e família biológica do adotado.