Search results for "Four-point"
showing 3 items of 3 documents
Stress transfer and failure mechanisms in steel-concrete trussed beams: Experimental investigation on slab-thick and full-thick beams
2018
Abstract This study presents the results of an experimental investigation on semi-precast Hybrid Steel Trussed-Concrete Beams (HSTCBs) for analyzing the failure modes and the stress transfer mechanism between concrete and embedded steel elements (plate and truss). The available literature presents previous studies carried out by the authors mainly focused on the understanding of the local transfer mechanism by means of push-out tests. Conversely, in this paper original the results of laboratory tests conducted on six specimens of full-size HSTCBs subjected to four-point bending, with variation in the shear span, are reported on. From these results, the authors are able to assess the failure…
Light absorption and electrical transport in Si:O alloys for photovoltaics
2010
Thin films (100-500 nm) of the Si:O alloy have been systematically characterized in the optical absorption and electrical transport behavior, by varying the Si content from 43 up to 100 at. %. Magnetron sputtering or plasma enhanced chemical vapor deposition have been used for the Si:O alloy deposition, followed by annealing up to 1250 °C. Boron implantation (30 keV, 3-30× 1014 B/cm2) on selected samples was performed to vary the electrical sheet resistance measured by the four-point collinear probe method. Transmittance and reflectance spectra have been extracted and combined to estimate the absorption spectra and the optical band gap, by means of the Tauc analysis. Raman spectroscopy was …
Ebraismo, identità e memoria. Quattro scene dalle vita di Arnold Schoenberg (1874-1951)
2020
Il saggio ricostruisce il percorso di riappropriazione dell'identità ebraica di Arnold Schoenberg, facendo riferimento - in modo particolare - agli eventi che hanno determinato la conversione all'ebraismo, agli scritti politici del 1933-38, all'epistolario con Thomas Mann durante l'esilio negli Stati Uniti e alla genesi e concezione poetica e musicale di A survivor from Warsaw op. 46 (1947). The essay reconstructs the path of re-appropriation of Arnold Schoenberg's Jewish identity, referring - in particular - to the events that led to the conversion to Judaism, to the political writings of 1933-38, to the correspondence with Thomas Mann during the exile in the United States and the genesis …