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Academic literature on the topic 'Simulazioni da principi primi'
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Journal articles on the topic "Simulazioni da principi primi"
Paola, Domingo, Riccardo Franchi, and Lorenzo Ravera. "Storia di una ricerca." Didattica della matematica. Dalla ricerca alle pratiche d’aula, no. 12 (November 21, 2022): 117–28. http://dx.doi.org/10.33683/ddm.22.12.6.
Full textPedley, Mary. "The manuscript papers of Diego de Revillas in the Archive of the British School at Rome." Papers of the British School at Rome 59 (November 1991): 319–24. http://dx.doi.org/10.1017/s0068246200009752.
Full textSalvi, Sergio. "La "rivoluzione verde" di Nazareno Strampelli." AGRICOLTURA ISTITUZIONI MERCATI, no. 3 (March 2011): 107–21. http://dx.doi.org/10.3280/aim2009-003006.
Full textSparacia, G., R. Lagalla, M. De Maria, and A. E. Cardinale. "La risonanza magnetica funzionale nello studio dell'ischemia cerebrale in fase iperacuta." Rivista di Neuroradiologia 9, no. 5 (October 1996): 529–40. http://dx.doi.org/10.1177/197140099600900504.
Full textSpagnolo, A. G., D. Sacchini, G. Torlone, and A. A. Bignamini. "Il laboratorio del Comitato Etico - 1. Istituzione e procedure operative standard." Medicina e Morale 48, no. 2 (April 30, 1999): 221–63. http://dx.doi.org/10.4081/mem.1999.804.
Full textGelo, Omar C. G., Andrea F. Auletta, and Diana Braakmann. "Aspetti teorico-metodologici e analisi dei dati nella ricerca in psicoterapia. Parte I: La ricerca sull'esito e la ricerca sul processo dagli anni '50 agli anni '80." Research in Psychotherapy: Psychopathology, Process and Outcome 13, no. 1 (September 14, 2010). http://dx.doi.org/10.4081/ripppo.2010.10.
Full textD’Ancona, Fortunato, Vincenza Gianfredi, and Francesco Vitale. "VACCINAZIONI NEL DIABETE: TUTTE A TUTTI O QUALI A CHI?" il Diabete 30, N. 4, dicembre 2018 (December 15, 2018). http://dx.doi.org/10.30682/ildia1804d.
Full textRodríguez, Gonzalo Herranz. "La deontología médica desde la tradición hipocrática al Cristianismo." Medicina e Morale 59, no. 3 (June 30, 2010). http://dx.doi.org/10.4081/mem.2010.211.
Full textRhonheimer, Martin. "La Creazione e la legge naturale a fondamento della morale della vita in Giovanni Paolo II." Medicina e Morale 56, no. 5 (October 30, 2007). http://dx.doi.org/10.4081/mem.2007.302.
Full textCalderaro, Monica, and Vincenzo M. Mastronardi. "DSM-V: major changes and overview on personality disorders with special reference to borderline disorder - DSM-V: principali modifiche e panoramica sui disturbi della personalità, con particolare riferimento al disturbo borderline - DSM-V: cambios mayores y visión general de los trastornos de personalidad con referencia especial al trastorno borderline." Rivista di Psicopatologia Forense, Medicina Legale, Criminologia, February 21, 2020. http://dx.doi.org/10.4081/psyco.2019.229.
Full textDissertations / Theses on the topic "Simulazioni da principi primi"
GABARDI, SILVIA. "First principles simulations of phase change materials for data storage." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/76292.
Full textPhase change materials based on chalcogenide alloys are of great technological importance because of their use in optical data storage devices (DVDs) and electronic non-volatile memories of new concept, the Phase Change Memory cell (PCM). These applications rely on a fast (50 ns) and reversible change between the crystalline and the amorphous phases upon heating. The two phases correspond to the two states of the memory that can be discriminated thanks to a large difference in their optical and electronic properties. Although Ge2Sb2Te5 (GST) is the compound presently used as active layer in PCMs, alternative materials with a higher crystallization temperature are under scrutiny in order to increase the thermal stability of the PCM devices. In this respect, we analysed, by means of ab-initio molecular dynamics simulations, different high crystallization temperature alloys with composition In3Sb1Te2, In13Sb11Te3 and Ga4Sb6Te3, which have been experimentally proposed as substitute of GST. However, the structural properties and the microscopical reason of the high thermal stability of the amorphous phases of these compounds is still unclear. We, thus, generated models of the amorphous phase of few hundreds of atoms by quenching from the melt in few hundreds of ps aiming at finding out a relation between the structural properties of the amorphous phase and the high crystallization temperature of these alloys. The topology of our amorphous models turned out to be mostly tetrahedral which differs from the octahedral-like geometry of the crystalline phases. The presence of tetrahedral structures in the amorphous which are absent in the crystalline phase, probably hinders the crystallization process resulting in a higher crystallization temperature with respect to GST which display a mostly octahedral-like structures in both amorphous and the crystalline phase. In the second part of this work we addressed the issue of the resistance drift phenomenon, which consists of an increase of the electrical resistance of the amorphous phase with time. This effect is detrimental in PCMs since it changes the electrical characteristics of the devices. This process is believed to be due to an aging of the amorphous phase which modifies during time the defect states in the proximity of the valence and conduction band edges which control the electrical conductivity. The microscopic origin of the structural relaxations leading to the drift is still unknown. To address this problem, we generated large models (about two thousand atoms) of amorphous GeTe by quenching from the melt in 100 ps with classical molecular dynamics simulations by using a neural-network potential. Once relaxed by first principles, the models showed the presence of several in-gap states localized on chains of Ge atoms. After an annealing at 500 K, performed to accelerate the drift process, Ge chains and homopolar Ge-Ge bonds reduce in number resulting in a band gap widening and a reduction of the Urbach tails at the band edges which can account for the increase of the resistance. We thus propose that the resistance drift originates from structural relaxations leading to the removal of Ge chains.
MACCIONI, MARIA BARBARA. "Magnetoelectric, multiferroic, wide-gap, and polar oxides for advanced applications: first-principles theoretical studies." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266675.
Full textTARTUFERI, Emanuele. "L'impronta ecologica della Regione Marche." Doctoral thesis, 2018. http://hdl.handle.net/11393/251180.
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