6,176 research outputs found
Le Variazioni Goldberg
No full textTraduzione del dramma Die Goldberg-Variationen, condotta in collaborazione da Marco Castellari e Laura Forti
Le Variazioni Goldberg
No full textEdizione italiana del dramma di George Tabori "Die Goldberg Variationen" (1991). La traduzione italiana del dramma, opera dei due curatori, è corredata da una prefazione di Laura Forti, da una postfazione di Marco Castellari, da una nota biografica di Marco Castellari e da una bibliografi
Forti muratorista insigne
No full textSi ripercorre l'attività scientifica che uno dei più illustri docenti dell'Ateneo bolognese, Fiorenzo Forti, dedicò alle indagini su L. A. Muratori, dal 1950 al 1980 (anno della scomparsa). Con l'ausilio di molti materiali d'archivio, studiati e in parte editi per la prima volta, sono pure passati in rassegna gli altri interessi settecenteschi di Forti. Si dà il regesto completo della corrispondenza di Forti con la casa editrice Ricciardi. Un largo spazio è riservato all'aspetto umano dello studioso, ai rapporti personali, alle amicizie da lui coltivate, e spesso saporitamente delineate nelle 'nugae' in versi che sono qui pubblicate e commentate
Functional diversity of L-type calcium channels in rat cerebellar neurons
No full textSingle-channel recordings show that functionally different L-type Ca2+ channels coexist in rat cerebellar granules. Besides two different dihydropyridine (DHP)sensitive gating patterns with properties similar to those of cardiac L-type channels, cerebellar granules contain a third DHP-sensitive gating pattern with unusual voltage-dependent properties and slightly different conductance. This ''anomalous gating'' is characterized, on one hand, by rare, short openings with very low open probability even at high positive voltages and, on the other hand, by long openings with high open probability at negative voltages after a predepolarization. L-type channels with anomalous gating appear suited to generate a surge of Ca2+ influx following strong neuronal activity. The anomalous gating can be explained by a model in which voltage controls the equilibrium between two gating modes
I forti militari di Roma. Quale riuso per quale programma d'uso.
No full textNel 1871 Roma completa la costruzione di quindici forti militari a difesa della città murata. La scoperta di nuove armi di artiglieria rese inutilizzabili tali strutture. Allo stato attuale i forti si trovano all'interno della città consolidata, spesso in stato di abbandono. Qualità architettonica e dimensione inducono a riflessioni su ruolo urbano e possibilità di riuso di tali importanti opere. Il testo individua modalità e indirizzi per una strategia di recupero dei Forti militari di Roma
Functional diversity of L-type calcium channels in rat cerebellar neurons
No full textSingle-channel recordings show that functionally different L-type Ca2+ channels coexist in rat cerebellar granules. Besides two different dihydropyridine (DHP)sensitive gating patterns with properties similar to those of cardiac L-type channels, cerebellar granules contain a third DHP-sensitive gating pattern with unusual voltage-dependent properties and slightly different conductance. This ''anomalous gating'' is characterized, on one hand, by rare, short openings with very low open probability even at high positive voltages and, on the other hand, by long openings with high open probability at negative voltages after a predepolarization. L-type channels with anomalous gating appear suited to generate a surge of Ca2+ influx following strong neuronal activity. The anomalous gating can be explained by a model in which voltage controls the equilibrium between two gating modes
Ripensare i forti. Tra recupero e trasformazione compatibile
No full textIl testo, partendo da un'analisi degli spazi, interni ed esterni, dei forti militari di Roma, individua e verifica alcune possibili modalità operative per il recupero ed il riuso di queste singolari strutture architettoniche; ne prefigura alcune possibili destinazioni funzionali di cui verifica, per approfondimenti puntuali, la fattibilità architettonica
Three novel types of voltage-dependent calcium channels in rat cerebellar neurons
No full textWith the aim of characterizing the functional and pharmacological properties of the different voltage-dependent Ca2+ channels expressed in a given type of CNS neuron, we obtained single Ca2+ channel recordings from rat cerebellar granule cells in primary culture. Our data show that three novel classes of voltage-dependent Ca2+ channels are coexpressed in cerebellar granule cells. They are pharmacologically distinct from dihydropyridine-sensitive L-type and omega-conotoxin-sensitive N-type channels, and their functional properties are different from those of P- and T-type channels. The three novel 21 pS G1-, 15 pS G2-, and 20 pS G3-type Ca2+ channels have similar inactivation properties. They show complete steady-state inactivation at -40 mV and their single-channel average currents have both sustained and decaying components. They differ in activation threshold (-40 mV for G2, -30 mV for G3, and -10 mV for G1, with 90 mM Ba2+ as charge carrier), mean open time (1.2 msec for G2, 1 msec for G3, 0.8 msec for G1), and single-channel currents (at 0 mV: 0.5 pA for G2, 0.8 pA for G3, and 1.4 pA for G1). Together with the previously characterized multiple L-type Ca2+ channels (Forti and Pietrobon, 1993), G1-, G2-, and G3-type channels constitute the large majority of Ca2+ channels of cerebellar granule cells in culture. The low activation threshold of G2-type channels and their inactivation properties suggest that they might be native counterparts of the recently expressed rat brain clone rbE-II (Soong et al., 1993)
Incontrare l’‘altro’ nel conflitto totale. Introduzione
No full textThe contents of the book are introduced, focusing on the aim therein of highliting, through literature and stories, the destinies of the many forgotten victims of the conflict (e.g. civil populations killed, deported or compelled to flee; women; POW and deserters, etc.) and how their misery largely depended upon the attitude to label as hostile or simply "other" all people living beyond a physical or, more often than not, a mental border
Triangular maps with all periods and no infinite ω-limit set containing periodic points
No full textAbstractOur main result is an example of a triangular map of the unite square, F(x,y)=(f(x),gx(y)), possessing periodic orbits of all periods and such that no infinite ω-limit set of F contains a periodic point. We also show that there is a triangular map F of type 2∞ monotone on the fibres such that any recurrent point of F is uniformly recurrent and F restricted to the set of its recurrent points is chaotic in the sense of Li and Yorke.For a continuous map φ of the interval there is a long list of more than 50 conditions characterizing zero topological entropy, including, e.g., conditions (i) φ is of type 2∞, (ii) every recurrent point of φ is uniformly recurrent, (iii) φ restricted to the set of chain recurrent points is not chaotic in the sense of Li and Yorke, (iv) no infinite ω-limit set contains a cycle. The problem presented by A.N. Sharkovsky in the eighties is to decide which of these conditions remain equivalent in the class of triangular maps. Our second example completes the results obtained, e.g., by Forti et al. (1999), Kočan (2003) and Šindelářová (2003), concerning triangular maps monotone on the fibres. The first example, with a more sophisticated proof, contributes to a more difficult problem of classification of general triangular maps, which is still not completely solved; the main partial results have been obtained by Kolyada (1992)
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