Consulta: subjectFacets:"Filaments"
Registros recuperados: 2
Data/hora: 10/06/2024 10:10:11

Comparison between Eulerian diagnostics and finite-size Lyapunov exponents computed from altimetry in the Algerian basin
Provedor de dados: 5
Autores: D'Ovidio, Francesco; Isern-fontanet, Jordi; Lopez, Cristobal; Hernandez Garcia, Emilio; Garcia Ladona, Emilio.
Transport and mixing properties of surface currents can be detected from altimetric data by both Eulerian and Lagrangian diagnostics. In contrast with Eulerian diagnostics, Lagrangian tools like the local Lyapunov exponents have the advantage of exploiting both spatial and temporal variability of the velocity field and are in principle able to unveil subgrid filaments generated by chaotic stirring. However, one may wonder whether this theoretical advantage is of practical interest in real-data, mesoscale and sub-mesoscale analysis, because of the uncertainties and resolution of altimetric products, and the non-passive nature of biogeochemical tracers. Here we compare the ability of standard Eulerian diagnostics and the finite-size Lyapunov exponent in...
Tipo: Text
Palavras-chave: Lagrangian dynamics; Mediterranean circulation; Altimetry; Filaments; Sub mesoscale.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6136.pdf

Gill Morphology in the Red Swamp Freshwater Crayfish Procambarus clarkii (Crustacea: Decapoda: Cambarids) (Girard 1852) from the River Nile and its Branches in Egypt
Provedor de dados: 77
Autores: Abumandour,Mohamed M.
The aim of the present study was focused on and describes the gross morphological and scanning electron microscopical features of the gill of the red swamp freshwater crayfish. Our results noted that: all gills have the same general structure and appearance. The gill consists of axis with numerous finger-like filaments, having three morphological types; round, pointed and somewhat hooked shaped. There is a variation in the direction of filaments according to their position, in middle part were nearly perpendicular to gill axis while in the apex were nearly parallel to axis. There were characteristic system of gill spines on central axis, basal plate, setobranch and on the bilobed epipodal plate. There are four shape of spinated-like parts of setobranch...
Tipo: Journal article
Palavras-chave: Crayfish; Filaments; Spines; Setobranch setae.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100025