9 resultados para Maryam Mirzakhani (1977)

em Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho"


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The feather mite Pterodectes ralliculae Atyeo and Gaud, 1977 (Proctophyllodidae: Pterodectinae) is the only proctophyllodid known from rallids (Gruiformes, Rallidae). Based on re-examination of the type material, this mite species is redescribed and transferred to the genus Montesauria Oudemans, 1905, Montesauria ralliculae (Atyeo and Gaud, 1977) comb. nov. This redescription brings details of structures missed in the original description: in both sexes, vertical setae ve are present, setae mG on genu II, gT on tibia II and wa on tarsi I and II are present; in males, the rudimentary epimeral sclerites rEpIIa are present and the female is illustrated for the first time. The transfer of P. ralliculae to Montesauria was also supported by the preliminary phylogenetic hypothesis recently proposed for the subfamily Pterodectinae.

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In this paper we propose a new synonymy between P. corderoi (Baker & Pritchard, 1962) and P. incanus Gonzalez & Flechtmann, 1977, based on the examination of type-specimens.

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This paper evaluates the behavior of suspended sediment load of the river Ivaí over a period of 32 years measured by the station further downstream the river (Novo Porto Taquara). The most suitable parameters for this assessment were the annual discharge of suspended sediment and water obtained from SUDERSA. The relationship between the concentration of suspended sediment and discharge of water had not a very good correlation (R 2 = 0,56) and hysteresis effect is quite clear. The justification for this behavior is given by the heterogeneity of the hydrological regime and basin occupation. There were no significant changes in annual flows which have remained the same during the study period. Already the discharge of suspended sediment showed a small gradual decline in which the end of the period (2007), the river carries less than 0.65 Mton at the beginning (1977). This reduction in suspended sediment transported is probably due to changes in soil management for agriculture.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Comunicação - FAAC