161,663 research outputs found
Structural and electronic properties of C60 and C60 derivatives in the solid phases: calculations based on density-functional theory
No full text«Una strania fenice». Marco Santagata: gli studi, le opere
No full textIl libro raccoglie contributi sulla figura e le opere di Marco Santagata, italianista e scrittore. Ne sono autori Annalisa Andreoni, Gian Mario Anselmi, Gabriele Baldassari, Roberto Barbolini, Pietro G. Beltrami, Claudia Berra, Alberto Bertoni, Laura Bosio, Cristiana Brunelli, Alberto Casadei, Roberta Cella, Michele Feo, Francesco Ferretti, Gianfranco Fioravanti, Serena Fornasiero, Christian Genetelli, Klaus W. Hempfer, Giuseppe Indizio, Vincenzo Manca, Grazia Melli, Cristina Montagnani, Matteo Palumbo, Laura Paolino, Diego Quaglioni, Amedeo Quondam, Gerhard Regn, Laura Regnicoli, Francisco Rico, Raffaele Ruggiero, Gino Ruozzi, Salvatore Settis, Silvana Tamiozzo, Chiara Tognarelli, Paola Vecchi Galli, Tiziano Zanato. Chiude il volume la Bibliografia degli scritti di Marco Santagata.
Marco Santagata (Zocca, 28 aprile 1947 ‒ Pisa, 9 novembre 2020) è stato studioso di letteratura italiana e romanziere. A lungo docente all’Università di Pisa, è autore di studi fondamentali su Petrarca – culminati nel commento al Canzoniere (1996, 20042) –, su Dante, Boccaccio, la poesia del Quattrocento e Boiardo, e sulla tradizione lirica fino a Leopardi, Pascoli e d’Annunzio. A ciò ha affiancato una felice produzione narrativa: tra i suoi romanzi Il copista (2000), Il maestro dei santi pallidi (2002, Premio Campiello 2003), L'amore in sé (2006, Premio Stresa), Come donna innamorata (2015, finalista al Premio Strega). La sua poliedrica natura di intellettuale impegnato e curioso del mondo lo ha portato anche ad occuparsi attivamente di politica culturale e universitaria e di divulgazione.The book collects contributions on the figure and works of Marco Santagata, scholar of Italian literature and novelist. The authors are Annalisa Andreoni, Gian Mario Anselmi, Gabriele Baldassari, Roberto Barbolini, Pietro G. Beltrami, Claudia Berra, Alberto Bertoni, Laura Bosio, Cristiana Brunelli, Alberto Casadei, Roberta Cella, Michele Feo, Francesco Ferretti, Gianfranco Fioravanti, Serena Fornasiero, Christian Genetelli, Klaus W. Hempfer, Giuseppe Indizio, Vincenzo Manca, Grazia Melli, Cristina Montagnani, Matteo Palumbo, Laura Paolino, Diego Quaglioni, Amedeo Quondam, Gerhard Regn, Laura Regnicoli, Francisco Rico, Raffaele Ruggiero, Gino Ruozzi, Salvatore Settis, Silvana Tamiozzo, Chiara Tognarelli, Paola Vecchi Galli, Tiziano Zanato. The volume closes with the Bibliography of Marco Santagata's writings.
Marco Santagata (Zocca (Modena), 28 April 1947 ‒ Pisa, 9 November 2020) was a scholar of Italian literature and novelist. Long a professor at the University of Pisa, he is the author of fundamental studies on Petrarch - culminating in the commentary on the "Canzoniere" (1996, 20042) -, on Dante, Boccaccio, fifteenth-century poetry and Boiardo, and on the lyric tradition up to Leopardi, Pascoli and d'Annunzio. Alongside this he has a successful narrative production: among his novels "Il copista" (2000), "Il maestro dei santi pallidi" (2002, Campiello Prize 2003), "L'amore in sé" (2006, Stresa Prize), "Come donna innamorata" (2015, finalist for the Strega Prize). His multifaceted nature as a engaged intellectual has also led him to actively deal with cultural and university politics and dissemination
EFFECT OF SIZE AND GEOMETRY ON THE ELECTRONIC-PROPERTIES OF SMALL HYDROGENATED SILICON CLUSTERS
No full textWe have calculated the geometrical characteristics and electronic properties of small SinHm clusters, using the local-density approximation of density functional theory and the pseudopotential approach. Both for passivated crystal fragments and octasilacubane our results indicate nontrivial and so far unexpected effects of the cluster structure on the nature of the low-lying electronic excitations. Comparison with previous calculations as well as with experimental data, where available, is made. For the sake of comparison, calculations on (carbon) cubane are also presented
Effects of doping on the vibrational properties of C-60 from first principles: K6C60
No full textAb initio calculations of the phonon spectrum of K6C60 are presented, based on the local-density approximation of density-functional theory and on linear response theory. The effects of doping on frequencies and infrared intensities are identified and their physical origin discussed in detail for optically allowed modes. Whereas structural relaxation is primarily responsible for the frequency changes, and especially for the softening of tangential modes, the change in infrared relative intensities is a direct consequence of the electron transfer. The potassium vibrations are found to lie within 60-100 cm(-1) and are well decoupled from C-60 intramolecular modes
Contributo dell’agobiopsia epatica nella risoluzione di alcuni problemi di Chirurgia d’Urgenza
No full textSURFACE PHONONS AND DIPOLE ACTIVITY OF SI(111)2X1 FROM ABINITIO CALCULATIONS
No full textWe present a first-principles linear-response study of the phonon spectrum and dipole activity of the Si(111)2 x 1 surface. Our results are in good agreement with the experimental He-scattering results for the acoustic modes, as well as the electron-energy-loss data for the optical modes. We clarify a current controversy on the assignment of the electron-energy-loss peak at approximately 56 meV. We find that the dominant contribution to the loss peak is anisotropic and arises from a longitudinal-optical vibration of the surface chains. However, a small but non-negligible isotropic contribution comes from subsurface modes polarized perpendicular to the surface
La nostra Storia e le Storie degli altri: i "Confini"
No full textLa relazione, svolta in sessione plenaria su invito dell'Associazione degli Italianisti italiani al congresso per il decennale, svolge una riflessione su quanto i "confini", intesi sia in senso geografico-linguistico che in senso disciplinare abbiano ostacolato un approccio veramente fecondo ai grandi temi discussi nella letteratura europea della modernità. L'autrice illustra alcune sperienze concrete in cui oltrepassare le barriere linguistiche e quelle tra letteratura e scienze naturali ha permesso di ricostruire in profondità dibattiti che nel Sette-Ottocento hanno investito la letteratura nazionale
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