166 research outputs found
Nyelvtanulástól nyelvtanításig – "a magyar mint idegen nyelv" témáról (Dall'aopprendimento linguistico all'insegnamento – a proposito della lingua ungherese L2)
No full textL’articolo presenta alcuni temi della didattica della lingua ungherese considerati complessi alla luce della linguistica funzionale della scuola di Simon C. Dik proponendo nuove formule di presentazione
Aspetti medico-legali del monitoraggio biologico nel giudizio di idoneità al lavoro e nella diagnosi di malattia professionale. Ricerca su addetti nel comparto calzaturiero.
No full text
Is It Possible to Predict the Synergistic Benefit of Combinated Effective Drugs in Congestive Heart Failure?
No full textActions on the existing: traditional techniques, new materials in the restoration project of forum bath and gymnasium in Pompeii
No full textDependable Contact Related Parameter Extraction in Graphene–Metal Junctions
No full textThe accurate extraction and the reliable, repeatable reduction of graphene -
metal contact resistance (R) are still open issues in graphene
technology. Here, we demonstrate the importance of following clear protocols
when extracting R using the transfer length method (TLM). We use the
example of back-gated graphene TLM structures with nickel contacts, a
complementary metal oxide semiconductor compatible metal. The accurate
extraction of R is significantly affected by generally observable Dirac
voltage shifts with increasing channel lengths in ambient conditions. R
is generally a function of the carrier density in graphene. Hence, the position
of the Fermi level and the gate voltage impact the extraction of R.
Measurements in high vacuum, on the other hand, result in dependable extraction
of R as a function of gate voltage owing to minimal spread in Dirac
voltages. We further assess the accurate measurement and extraction of
important parameters like contact-end resistance, transfer length, sheet
resistance of graphene under the metal contact and specific contact resistivity
as a function of the back-gate voltage. The presented methodology has also been
applied to devices with gold and copper contacts, with similar conclusions
DFT study of graphene doping due to metal contacts
No full textThe experimental results of Metal–graphene (M–G) contact resistance (RC) have been investigated in–depth by means of Density Functional Theory (DFT). The simulations allowed us to build a consistent picture explaining the RC dependence on the metal contact materials employed in this work and on the applied back–gate voltage. In this respect, the M–G distance is paramount in determining the RC behavior
La conservazione nei centri storici minori abruzzesi colpiti dal sisma del 2009: esigenze di riuso e questioni di conservazione
No full textThe earthquake in April 2009 struck, over the city of L’Aquila, a wide area, including smaller historical towns of great historic, artistic and environmental interest.
The paper examines the cases of Castelvecchio Calvisio and Santo Stefano di Sessanio, analyzing their architectural and construction characteristics and the current state of degradation of materials and structures, with the aim of verifying the compatibility of requirements for reuse and for ‘reconstruction’ post earthquake with the conservative instances.
At present, in fact, there is a tendency to regard ‘priority’ structural problems, but if these issues are not dealt with a conservative approach and a clear and theoretical-critical awareness, we risk irreversibly damaging a historical and architectural heritage of particular complexity and value, consisting of a intact built heritage, although damaged by the earthquake, miraculously unscathed from the speculation phenomena.
In these cases, the conservation of the material authenticity is essential because it is the very value of these villages, whereas the analysis suggests that, not infrequently, the actions of ‘recovery’ may be a further insult to the conservation
La dialettica tra eresia e ortodossie nei restauri in Abruzzo, dagli anni Sessanta all’attuale ‘ricostruzione’ post sismica
No full textThe paper is a reflection on restoration in Abruzzo, by starting from the clamorous stop of restoration works in Santa Maria di Collemaggio (1972) and continuing with the subsequent restorations and with the current reconstruction after the earthquake of 2009. Some elements of continuity with the previous restoration are highlighted and also the consecutive orientations influenced by the dramatic experience; the aim is to reflect on which are today the “orthodox” approaches and which those that are configured as” heretics.”
Actually the practice is clearly addressed by the premises that guide the interventions, if the purpose is the preservation of a “material evidence which has a value of culture” (definition of the Franceschini Commission in 1967) or the simple re-use of an historic building. Nowadays the seismic reconstruction is guided by such laws that give exclusive priority to recovering the functionality of the buildings damaged, while the cultural issue of restoration appears misunderstood and generally confined to the decorative conservation. One of the consequences of this approach is the inappropriate attention given to the historical architecture authenticity, mainly in reference with those buildings not subjected to safeguard, that can be demolished and rebuilt because of economic benefit criteria. Little consideration is also given to monumental buildings as regards the conservation of architectural surfaces, with the renewal of plasters, which seems to be inappropriate both from the historical point of view and the aesthetic one. It seems to exist an approach aimed to the preservation of form, rather than substance; this could be consequence of the enlarged protection on the “intangible aspects” of Cultural Heritage, of which a negative aspect might be deflecting attention from the concrete matter of restoration
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