1,721,472 research outputs found
Marostica: profilo istituzionale di un centro urbano della Serenissima
No full textcon introduzione di POVOLO C., I centri minori della Terraferma veneta, pp. 19-39
The Novelist and the Archivist. Fiction and History in Alessandro Manzoni's The Betrothed
No full textThe book opens with an introduction by John Jeffries Martin on Alessandro Manzoni and his great novel I promessi sposi (The Betrothed). Martin stresses Manzoni’s brilliance as a novelist and a historian – both his sophisticated use of sources and his subtle blending of history and fiction in what is one of Europe’s most powerful works of historical writing.
Claudio Povolo’s book then examines the surprising coincidences between Manzoni’s great novel and a trial held between 1605-07 by order of an important Venetian magistracy for a series of violent acts and rapes committed against the population of a small village in the Veneto. As Povolo shows, the protagonists and the events found in the records of the trial follow the same narrative structure as the novel. These coincidences lead to the hypothesis that Manzoni must have been able to consult the records of this criminal trial, which along with many other documents had been transferred to the great archive of the Venetian Frari after the fall of the Serenissima. The comparison of the novel with the trial is illuminating, as it allows us to grasp the complex interrelations between history and narrative, and among reality, verisimilitude, and imagination. In the afterward the author takes into consideration other possible interpretations, but ultimately the initial thesis and the arguments brought forward to support it are, beyond any reasonable doubt, more convincing than the other hypotheses and explanations formulated up to now by literary critics
Does poly-β-hydroxybutyrate interfere with nitrogen fixation in bacteroids?
No full textWhile most rhizobia accumulate poly--hydroxybutyrate (PHB) during free-living reproductive growth, not all of them are able to store the polymer in symbiotic life. The role of PHB during nitrogen fixation in bacteroid state is still unclear. It has been reported that a PHB-synthase (phbC) mutant of Rhizobium etli has more nitrogenase activity and higher seed content (Cevallos et al., 1996). In contrast, bacteroids of Sinorhizobium meliloti do not accumulate the polymer and nitrogen fixation is not affected by the lack of PHB-synthase (Povolo et al., 1994). In S. meliloti a gene involved in carbon flux regulation (aniA) has been described. A mutation of this gene produces reduced nitrogen fixation suggesting a complex interplay among different metabolic pathways, namely PHB, glycogen and nitrogenase activity (Povolo and Casella, 2000). Recently a Tn5-mutant of Rhizobium tropici with enhanced symbiotic nitrogen fixation was isolated. The mutation was shown to map in a gene of glycogen syntheses (Marroqui et al., 2001). The aim of this work was to isolate and characterised R. tropici mutants unable to accumulate PHB
La giusta vendetta. Il furore di un giovane gentiluomo del Cinquecento.
No full textThe paper deals with the story of Marcantonio Trissino, the grandson of Giangiorgio Trissino, the famous man of letters and humanist. In the year 1583 Marcantonio, abruptily and amazingly, killed Giulio Cesare Trissino outside Vicenza's dome while he was surrounded and protected by numerous friends and followers. Giulio Cesare Trissino was suspected by the public opinion being the mandant of Ciro Trissino's murder, the father of Marcantonio, killed in february 1576 in his palladian villa located in Cornedo, a Vicentine village, by a group of goons, masked and dressed in black suits. During the trial instructed in Padua by appointment of the Counsel of ten, Marcantonio Trissino defended his violent behavior advocating that his mind was run over by anger and furor. The trial rhetoric vehicles the great themes of vendetta and honor and introduce to the tensions between retributive and restorative justice
Confini simbolici, narrazioni, piccoli luoghi. Alcune riflessioni in merito alla storia di comunità
No full textThe introduction deals with the idea of community, considered as a symbolic point of individual and collective culture, but also as a small place in which it is possible to look with large issues
AniA, a regulatory protein involved in polymer accumulation in Ensifer meliloti
No full textBacterial biosynthesis of different polymers depends upon the genetic traits of the strain in use and by the culture conditions adopted. Although the separate production of exopolysaccharides (EPS) or poly-3-hydroxybutyrate [P(3HB)] is well documented, much less attention has been paid to the relationships between the synthesis of these two major compounds produced by bacteria. The biosynthetic pathways of these polymers are not directly linked, but they can be produced at the same time in some microorganisms. In rhizobia the general conditions governing the biosynthetic pathways (the nature and availability of carbon and nitrogen sources, the oxygenation, the energetic and redox states of cells, the environmental constraints, etc.) seem to be the same. Since the extent of EPS and P(3HB) production implies a significant energetic cost, a sensitive regulatory mechanism is required. A control of the synthesis and degradation of P(3HB) in bacteroids is important to maintain an effective symbiosis. Therefore, a well-regulated P(3HB) cycle results as a key factor for an optimal use of the available energy and for a balanced distribution of the carbon resources. Regulation of carbon flux into P(3HB) production occurs at multiple levels, and the comprehension of this regulation is essential for understanding the physiological functions of P(3HB) and possibly for applying this knowledge to industrial production of polyesters. AniA, a putative regulatory protein previously described (Povolo and Casella, 2000), and identified in the polyhydroxyalkanoates locus in Ensifer meliloti (Tombolini et al. , 1995), was found to be involved in carbon/energy regulation under normal growth conditions. The occurrence of AniA orthologs (described in some cases as PhaR) and organization of the respective genes were described in detail in many different bacteria (Pötter et al., 2005).
The present work gives a better inside of the role of the carbon flux regulator (aniA) in E. meliloti 41. Previous studies on other bacterial species indicated that the impaired synthesis of one polymer causes other reserve materials to be turned over (Breuer and Babel, 1999). A strain carrying a lacZ transcriptional fusion inside the aniA gene was constructed from E. meliloti 41 and from the mutant strain E. meliloti 41003 unable to accumulate polyhydroxyalkanoates (Povolo and Casella, 2008). E. meliloti 41003 accumulates also less exopolysaccharides as compared to the wild-type strain 41 (Povolo and Casella, 2008). The transcription of aniA-lacZ fusions was studied in the wild-type and in the phaC-mutant backgrounds under different conditions. We also showed that an EPS negative mutant of E. meliloti 2011 (strain H3a) could accumulate more P(3HB) than the wild-type strain 2011.
All together these results indicate a clear correlation between P(3HB) and EPS biosynthesis. On the other hand, an aniA-Km mutation was transferred to different E. meliloti strains carrying exp-lacZ and exo-lacZ fusions. Phenotypic analysis of these double mutants showed a change from rough colonies of the single mutants to mucoid colonies in the double mutants (strains exoY-lacZ/aniA-, exoL-lacZ/aniA- and exoP-lacZ/aniA-) indicating an effect of aniA on EPS production
Voices from Istria
Full text linkThe book summarizes the historical research of the UE project Shared Culture between Italy and Slovenia (2007-2013). A research addressed to the petitions which were sent to the Venetian Signoria from the Istrian region in 16th and 17th centuries
Une peinture en plein air. Sur le traces de Giovan Andrea Bertanza (été 1618, dans les environs de Tignale, province de Brescia)
No full textThe paper concerns the great devotional painting existing in the sanctuary of Montecastello situated in the small village of Tignale which dominates the western bank of Garda Lake. The painting narrates the bitter armed conflict that took place in the mountains around Lake Garda on 17 august 1617, when the famous bandit Zanzanù was killed by a concentric attack of the community. The painting's author was Giovan Andrea Bertanza who satisfied the demands of the clients commissioning the work, while also skillfully rendering on a symbolic level the sensibility that imbued the new concept of order and social peace that was spreading throughout Europe at this time
Ambigue descrizioni: feste devozionali e feste di precetto nell’inchiesta veneziana di fine Settecento
Full text linkNel 1772 il Senato veneziano intervenne con una legge per limitare il numero esorbitante delle festività religiose diffuse in ogni parte del dominio da terra e dell’Istria. Il provvedimento era principalmente volto ad agevolare lo sviluppo delle attività economica ed in particolare dell’agricoltura in tutto lo stato. A tal fine il supremo organo veneziano incaricò i propri rappresentanti di raccogliere i dati inerenti ciascuna delle loro giurisdizioni. L’inchiesta, di lì a qualche anni, condusse ad una raccolta di dati che vennero sottoposti all’attenzione dei consultori in iure, che con i loro pareri avrebbero dovuto segnalare sia la vastità e le caratteristiche del fenomeno, che i possibili provvedimenti che avrebbero dovuto essere assunti per deliberare in merito ad una vera riforma delle festività religiose. Nel 1775 il Senato decise di vietare tutte le feste infrasettimanali che non fossero state decretate festive per ecclesiastico precetto. Un provvedimento prudente, che volutamente non affrontava la materia delicata delle feste di precetto, di diretta competenza ecclesiastica. Solamente nel 1787, infine, un successivo intervento del Senato, decretò che anche quest’ultime fossero drasticamente ridotte. La grande inchiesta veneziana degli anni ’70 e ’80 del Settecento, analogamente a quanto avvenne in altri paesi europei, è rivelatrice della percezione diversa rivolta dai ceti dominanti nei confronti di una cultura e di una religiosità popolare ampiamente condivise da tutti i ceti sociali nei secoli precedenti. I dati raccolti negli anni ’70 del Settecento sono soprattutto interessanti in quanto si costituiscono come una vera e propria ricerca etnografica ricca di descrizioni inerenti il culto dei santi e la diffusione delle festività religiose in Terraferma e in Istria. Affidate ad una preliminare indagine dei parroci, queste descrizioni, lungi dall’essere uniformi e provviste della precisione richiesta dal Senato veneziano, offrono un quadro variopinto della religiosità popolare e della difficoltà, se non dell’impossibilità, di tracciare un quadro omogeneo del mondo consuetudinario che ancora pervadeva intensamente, con i suoi tratti culturali, la vita religiosa delle popolazioni suddite. Descrizioni ambigue, dunque, in quanto i dati raccolti dai parroci difficilmente potevano prestarsi a fornire una risposta adeguata ai quesiti formulati da una legge che muoveva da una prospettiva decisamente estranea al mondo consuetudinario e alle sue numerose sfaccettature
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