1,721,239 research outputs found
Etude du frittage de poudres industrielles de mullite: Application à la réalisation de mousses de mullite pour la filtration des particules émises par les moteurs Diesel
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Studio della sinterizzazione di due polveri industriali di mullite; applicazione alla realizzazione di schiume ceramiche per la filtrazione del particolato Diesel
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Study of the degradation causes affecting stucco sculptures from the Valentino Castle in Turin
No full text17th century stuccos located in The Valentino Castle in Turin (Northern Italy) have been studied by means of XRD, TG-DTA, Hg porosimetry and SEM coupled with EDX chemical analysis in order to understand their composition and the degradation causes. The investigated un-degraded samples were made of gypsum, hydrated lime and other carbonates phases on the external surface and up to ca. 20 mm in depth but the compositions were highly heterogeneous. Repeated cycles of water impregnation, coming from roofing infiltration, and evaporation have reached the investigated area and led to severe damages to stuccos due to crystallization of hydrated magnesium sulphate salts
Room temperature ammonia sensors based on zinc oxide and functionalized graphite and multi-walled carbon nanotubes
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