19 resultados para Youngs
em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"
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The Hepatus pudibundus (Herbst, 1785) juvenile development was studied in laboratory, under the morphological and systematical stand points. The eight early juvenile stages were obtained from larvae hatched from eggs of two ovigerous females, collected at the northern coast of the State of São Paulo, Brazil. The experiments were carried out in a climatically controlled room at 25 ± 1°C, and steady saltness of 34 . The youngs were maintened individually and food consisted of Artemia sp. nauplii and fragments of fish muscle.The first juvenile stage were particulary drawn and described. For the remaining juvenile stages the most representative frameworks were picked out, which allowed the characterization of the first eight stages. According to juvenile morphology studies, it was noted that secondary sexual characters differentation begins from the third stage.
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Brains of Wistar male rats (newborns, youngs and adults) submitted to protein-calorie deprivation for different periods (27, 33 and 60 days) were studied histologically and biochemically (protein and lipids contents). Lower levels of lipid, particularly among young rats, were observed in all groups. The protein levels were also significantly lower in the newborns, only slightly diminished in the youngs and not altered in the adults. On the other hand the histological study made in all groups did not show any qualitative modifications. The authors concluded that the protein-calorie deprivation affects the brain composition markedly in the earlier periods of life when the developing rate is greater. This could result in irreversible brain damage.
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Habitat split is a major force behind the worldwide decline of amphibian populations, causing community change in richness and species composition. In fragmented landscapes, natural remnants, the terrestrial habitat of the adults, are frequently separated from streams, the aquatic habitat of the larvae. An important question is how this landscape configuration affects population levels and if it can drive species to extinction locally. Here, we put forward the first theoretical model on habitat split which is particularly concerned on how split distance - the distance between the two required habitats - affects population size and persistence in isolated fragments. Our diffusive model shows that habitat split alone is able to generate extinction thresholds. Fragments occurring between the aquatic habitat and a given critical split distance are expected to hold viable populations, while fragments located farther away are expected to be unoccupied. Species with higher reproductive success and higher diffusion rate of post-metamorphic youngs are expected to have farther critical split distances. Furthermore, the model indicates that negative effects of habitat split are poorly compensated by positive effects of fragment size. The habitat split model improves our understanding about spatially structured populations and has relevant implications for landscape design for conservation. It puts on a firm theoretical basis the relation between habitat split and the decline of amphibian populations. © 2013 Fonseca et al.
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Pós-graduação em Artes - IA
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Pós-graduação em Ciências Sociais - FFC
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Pós-graduação em Educação Matemática - IGCE
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Medicina Veterinária - FMVZ
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Pós-graduação em Ciência dos Materiais - FEIS
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Apresentamos uma pesquisa fundamentada na obra A importância do ato de ler e outros textos de Paulo Freire. Numa sala de aula com 16 alunos jovens e adultos, em sua maioria migrantes de outros Estados do Brasil, a leitura da arte, em forma de imagens, músicas e poesias, instigou-os a ler também suas histórias de vida e as situações de opressão que vivenciaram. E reconhecendo suas situações de dominação e superando a visão ingênua e conformista, enquanto sujeitos do processo educativo e da própria história, foi-lhes possível adquirir uma visão mais crítica e superar as próprias limitações.
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O presente artigo pretende investigar como os profissionais que atuam junto a jovens infratores, percebem as causas que os levam a essa situação, contrapondo essas percepções aos estudos bibliográficos. Para tanto, foram realizadas entrevistas com uma Psicóloga e uma Assistente Social que atuam no escritório da FEBEM no município de Rio Claro.
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Pós-graduação em Geociências e Meio Ambiente - IGCE