La literatura gauchesca y lo social.

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De la Méditerranée aux ALpes. Matières premières et biens de prestige entre le Ve et le IVe millénaire AV. J.-C. en Suisse Occidentale

Plusieurs sites de la région alpine et périalpine occidentale du Ve et du IVe millénaire av. J.-C. révèlent la circulation de matières premières et de produits finis allochtones. En Suisse occidentale, les découvertes se rattachent à des parures et à des biens de prestige en corail et en coquillages de Méditerranée et font partie des mobiliers funéraires. De surcroît, elles témoignent de l’existence de couloirs de circulation et de réseaux performants de distribution de produits « exotiques » et suggèrent l’intérêt pour des matériaux fabriqués dans des ateliers situés vraisemblablement à proximité des côtes de Méditerranée

Habla coloquial y lengua literaria en las letras argentinas.

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Novela e historia: La visión fictiva del período peronista (1944-1955) en las letras argentinas.

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W. BLEZNICK, DONALD (compilador): Variaciones interpretativas en torno a la nueva narrativa hispanoamericana.

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Effects of wall curvature on the dynamics of an impinging jet and resulting heat transfer

The effects of wall curvature on the dynamics of a round subsonic jet impinging on a concave surface are investigated for the first time by direct numerical solution of the compressible Navier-Stokes equations. Impinging jets on curved surfaces are of interest in several applications, such as the impingement cooling of gas turbine blades. The simulation is performed at Reynolds and Mach numbers respectively equal to 3, 300 and 0.8. The impingement wall is kept at a constant temperature, 80 K higher than that of the jet at the inlet. The nozzle-to-plate distance (measured along the jet axis) is set to 5D, with D the nozzle diameter. In order to highlight the curvature effects, the present results are compared to a previous study of jet impinging on a flat plate. The specific influence of wall curvature is investigated through a frequency analysis based on discrete Fourier transform and dynamic mode decomposition. We found that the peak frequencies of the heat transfer also dominate the dynamics of primary vortices in the free jet region and secondary vortices produced by the interaction of primary vortices and the target plate. These frequencies are approximately 30% lower than those found in the reference study of impinging jet on a flat plate. Imperceptible differences were instead found in the time-averaged integral heat transfer

De Alto, Bruno Pedro, Autonomía tecnológica: La audacia de la División Electrónica de FATE

De Alto, Bruno Pedro, Autonomía tecnológica: La audacia de la División Electrónica de FATE, Buenos Aires, Ediciones CICCUS, Exi2 y UTN-Facultad Regional General Pacheco, 2013 (272 págs.), ISBN 978-987-693-019-2