1000 resultados para ritiro calcestruzzo impalcato ponte sezione mista
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Référence bibliographique : Weigert, 219
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Référence bibliographique : Weigert, 217
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Référence bibliographique : Weigert, 218
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Référence bibliographique : Weigert, 652
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Référence bibliographique : Weigert, 653
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Référence bibliographique : Weigert, 289
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Référence bibliographique : Weigert, 290
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Référence bibliographique : Weigert, 291
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Référence bibliographique : Weigert, 292
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Référence bibliographique : Toledano, Marieschi, 33b
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Référence bibliographique : Toledano, Marieschi, 10e
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This article reports on some basic and conceptual principles concerning electron transfer (ET) and/or intervalence transfer (IT) phenomena in inorganic mixed-valence systems.
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This paper presents a review of different chemical compositions that are used in the production of mixed ionic-electronic conducting membranes with the perovskite structure. In these dense membranes, oxygen from the air is permeated through ionic and electronic processes, and high oxygen permeation fluxes are observed at high temperatures (800-900 ºC). Various membranes were compared for their performance and properties after being synthesized by different methods.