Search results for " Crown"
showing 10 items of 47 documents
L'esercizio del potere tra consenso e opposizione nella Sicilia del XIV secolo: il caso dei signori di Sciacca
2021
Il saggio delinea le strategie utilizzate dai Peralta, signori di Sciacca, nell’esercizio e nella gestione del potere, mettendo in luce le forme di consenso che questo generò. Ambito privilegiato di indagine è la corte dei Peralta e le famiglie che seguirono i conti nella ribellione e nella riconciliazione con la Corona, quelle che trassero vantaggi dalla familiarità con i vicari e quelle che, per la loro opposizione, furono ricompensate solo alla morte di Nicola. I riflessi del ruolo assunto dal conte di Caltabellotta sono evidenti anche nell’opera del ministro dei Minori in Sicilia Andrea de Pace di Sciacca che, alla fine del XIV secolo, dedicò il suo Viridarium principum proprio a Nicola…
Catalani nel Val Demone tra Trecento e Quattrocento. Spazi, ruoli, interazioni
2015
Contaminata ed eterogenea, l'identità siciliana - culturale, linguistica, istituzionale - trae alimento da apporti diversi. Un tassello dei quali è quello catalano destinato dopo una fase di iniziale entusiamo, a incunearsi in modo problematico nel tessuto economico e politico dell'isola. Il lavoro si propone di analizzare i processi di incontro, scontro ed eventualmente fusione tra siciliani e catalani, focalizzando i meccanismi di accorpamento e coesistenza, gli spazi identitari ritagliati dagli uni e dagli altri in due momenti nodali: il primo Trecento, quando sulla scia del Vespro l'isola è raggiunta da un'ondata di catalani al seguito di Pietro III d'Aragona; e il Quattrocento, quando …
L'effetto Caspe in Sicilia (1412-1415)
2013
Il compromesso di Caspe sancì il passaggio della Corona d'Aragona a Ferdinando I ed ebbe notevoli conseguenza anche per la Sicilia, che fu affidata ai viceré. L'isola fu utilizzata come base per la potenza marittima aragonese e per l'esportazione di grano e altri prodotti alimentari. Nei documenti pubblici si iniziò a utilizzare il castigliano e fu istituito l'ufficio di conservatore del Real Patrimonio.
The expansion of a European feudal monarchy during the 13th Century: the Catalan-Aragonese Crown and the consequences of the conquest of the kingdoms…
2009
-Enric.Guinot@uv.es In the middle of the 13th century the Crown of Aragon conquered by military means the Muslim Mediterranean Coast of the Iberian Peninsula, incorporating it into the European feudal world; this resulted in the destruction of the Andalusí state and part of its society as well as in a redistribution of towns, villages, houses and lands among Christians. The historiography of some years ago emphasized the role of trade and urban burgesses in these new societies, but present opinion is more related to a long expansion of feudal society as well as the creation in Majorca and Valencia of a colonial society. Logically, the consequences of this process had also an effect in Catal…
Vertical root fracture in endodontically treated teeth: A review of 25 cases
2001
Abstract Objective: We sought to examine the clinical conditions under which 25 endodontically treated teeth underwent vertical root fracture (VRF) and to relate this condition to the time elapsed from endodontic treatment to fracture. Study Design: This was a retrospective study in which we reviewed 25 case histories of patients with postendodontic VRF and studied the effect of various pretreatment and posttreatment factors as they related to VRF. Results And Conclusions: The mean time to VRF was 54 months; this was not significantly influenced by the presence or absence of prior restoration or by the presence or absence of a crown fitting. The use of a prefabricated, cylindrical, cemented…
Tuning the Basicity of Synergic Bimetallic Reagents: Switching the Regioselectivity of the Direct Dimetalation of Toluene from 2,5‐ to 3,5‐Positions
2008
Meta-meta metalation: Remarkably, toluene can be directly dimanganated or dimagnesiated at the 3,5-positions using bimetallic bases with active Me3SiCH2 ligands (see scheme, blue). In contrast, n-butyl ligands lead to 2,5-metalation (red). tmp=2,2,6,6-tetramethylpiperidide.
Direct C-H metalation with chromium(ii) and iron(ii): transition- metal host/benzenediide guest magnetic inverse-crown complexes
2009
Check M(etal)ate: The chessboard and the figures represent a special reaction in which different low-polarity metals can metalate arenes directly when they are brought into the right position. In a combination of queen (sodium) and knight (chromium or iron), it is possible for the knight (usually the weaker piece) to make a direct deadly hit on the king (benzene) in this game of elemental chess. Fil: Alborés, Pablo. Johannes Gutenberg Universitat Mainz; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Carrella, Luca M.. Johannes Gutenberg Universitat Mainz; Alemania Fil: Clegg, William. University of Newcastle; Reino Unido Fil: García Álvarez, Pablo. Univ…
Periodontal Behavior and Patient Satisfaction of Anterior Teeth Restored with Single Zirconia Crowns Using a Biologically Oriented Preparation Techni…
2021
bjectives. The aim of this study was to analyze the behavior of the periodontal tissues around teeth in the anterior region when restored with zirconia single crowns, using a biologically oriented preparation technique (BOPT), over a 6-year follow-up. Methods. The study investigated tooth-supported single crowns in the anterior region that were fabricated with a zirconia core and feldspathic ceramic covering, in 34 patients. Follow-up analysis took place annually for 6 years, assessing periodontal responses by evaluating the following variables: plaque index (PI)
Oligarchies and Client Systems in Rural communities in the South of the Crown of Aragón (13th to 15th Centuries)
2010
Studies of late medieval Hispanic client systems generally focus on networks of noble power, to the exclusion of the peasantry. This is doubtless in part because the peasantry has traditionally been considered to represent a largely homogenous social group defined in opposition to the feudal nobility, whose members defended common interests. However, the last few years have witnessed a profusion of studies into the rural, or peasant, elites of Western Europe during the late medieval and modern periods, and these highlight not only significant disparities between the economic status of those and that of the remainder of the peasantry, but also their employment of specific power-mechanisms in…
Synthesis, Structures and DFT Calculations on Alkaline-Earth Metal Azide-Crown Ether Complexes
2008
The first examples of azide complexes of calcium, strontium or barium with crown ethers have been prepared and fully characterised, notably [Ba([18]crown-6)(N3)2(MeOH)], [Sr([15]crown-5)(N3)2(H2O)], [Ca([15]crown-5)(N3)2(H2O)] and [Sr([15]crown-5)(N3(NO3)]. Crystal structures reveal the presence of a variety of coordination modes for the azide groups including kappa 1-, mu-1,3- and linkages via H-bonded water molecules, in addition to azide ions. The [Ba([18]crown-6)(N3)2(MeOH)].1/3 MeOH contains dinuclear cations with three mu-1,3-NNN bridges, the first example of this type in main group chemistry. The structures obtained have been compared with molecular structures computed by density fun…