Buscar
Mostrando ítems 21-30 de 624
Ocorrência de ectoparasitas em Ancistrus sp. em riachos neotropicais no Estado do Paraná
(Universidade Tecnológica Federal do ParanáDois VizinhosBrasilLicenciatura em Ciências BiológicasUTFPR, 2015-07-02)
In catchment areas, the streams are fundamental elements for the ecosystem, are rich in peculiar yet little known faunas of the high degree of endemism and threatened by uses and urban and rural occupations. One way to ...
Metodologia de projeto de um inversor ressonante auto-oscilante operando em alta frequência para aplicações a LED.
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2019-02-05)
In this dissertation, a design methodology is proposed for the Self Oscillating Resonant Converter operating in high frequency for LED lighting aplications. The high-frequency operation of electronic circuits has, as the ...
Patterns of distribution and accumulation of trace metals in Hysterothylacium sp. (Nematoda), Phyllodistomum sp. (Digenea) and in its fish host Hoplias malabaricus, from two neotropical rivers in southeastern Brazil
(2021-05-15)
Here we evaluated the potential for trace metal accumulation of two parasitic species, Hysterothylacium sp. (Nematoda) and Phyllodistomum sp. (Digenea), found parasitizing Hoplias malabaricus, a characiform fish also known ...
Effectiveness of coproscopic concentration techniques
(Versita, 2014-09)
The aim of the present study was to compare the effectiveness of the concentration techniques of flotation-centrifugation with zinc chloride (FZn) (δ = 1.45) with the spontaneous sedimentation (SSed) and the sucrose ...