986 resultados para Carracci, Lodovico, 1555-1619.


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Marca tip. en port. (Vandeweghe y Beeck, p. 252, merk 3)

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This article describes the simulation and characterization of an ultrasonic transducer using a new material called Rexolite to be used as a matching element. This transducer was simulated using a commercial piezoelectric ceramic PIC255 at 8 MHz. Rexolite, the new material, presents an excellent acoustic matching, specially in terms of the acoustic impedance of water. Finite elements simulations were used in this work. Rexolite was considered as a suitable material in the construction of the transducer due to its malleability and acoustic properties, to validate the simulations a prototype transducer was constructed. Experimental measurements were used to determine the resonance frequency of the prototype transducer. Simulated and experimental results were very similar showing that Rexolite may be an excellent matching, particularly for medical applications.

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Leída en el Paraninfo de la Universidad Literaria el día 23 de abril de 1872

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Fecha de la licencia: 1611

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Premio en los Juegos Florales de Lo Rat Penat en 1892

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Hay un ejemplar encuadernado con: Furs, capitols, prouisions e actes de Cort (XVI/6).

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Autor del vocabulario consta en preliminares

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Sign. : []12, A-Z8, Aa-Kk8