171,340 research outputs found
C. Drago, Pergamo on line: Archivio Diocesano di Barletta (secc. XV-XVI), Soprintendenza archivistica e bibliografica della Puglia 1999.
No full textSchedatura del fondo pergamenaceo dell’Archivio Diocesano di Barletta (secc. XV-XVI) realizzata per la banca dati «Pergamo online» della Soprintendenza Archivistica
Bounded solutions for -problem in pseudo-Siegel domains
No full textSi studia il problema dell'esistenza di soluzioni limitate per l'equazione sui domini pseudo-Siegel quando il dato soddisfa alla condizione per
Barletta e la Terrasanta: bilancio storiografico e prospettive di ricerca
No full textNella costruzione della storia della città di Barletta un argomento fondamentale per le numerose testimonianze medievali presenti sul territorio, è quello dei rapporti con la Terrasanta. Considerati da una lunga storia critica riflesso delle vicende che videro l’occupazione della Palestin nel 1184 prima e nel 1291 dopo, con la conseguente diaspora di artisti, scultori e architetti sulle coste dell’Adriatico meridionale, in questo contributo si dimostra l’anteriorità di questi rapporti dovuta al ruolo che la città costiera svolse nei confronti dell’Oriente crociato già a partire dagli anni Trenta del XII secolo, all’epoca della regina Melisenda di Gerusalemme. Vengono analizzate le opere sopravvissute, alcune delle quali rese note anche dall’autrice in un contributo del 2009 relativo al ritrovamento, attraverso inventari museali, di un nucleo di sculture rinvenienti dalla distrutta chiesa di Nazareth a Barletta (sede dell’omonimo vescovado di Terrasanta) e conservati nel museo civico della stessa città. A questo nucleo si aggiungono le testimonianze scultoree della locale cattedrale, opere di pittura, miniatura, codici liturgici e oreficerie. Attraverso una serrata indagine storica e storiografica sostenuta dall’analisi stilistico-formale dei manufatti si propone un nuovo e inedito percorso di lettura della produzione artistica della città in relazione al contesto del Mediterraneo
Weakly nonlinear analysis of viscous dissipation thermal instability in plane Poiseuille and plane Couette flows
No full textThe weakly nonlinear stability analysis of plane Poiseuille flow (PPF) and plane Couette flow (PCF) when viscous dissipation is taken into account is considered. The impermeable lower boundary is considered adiabatic, while the impermeable upper boundary is isothermal. The linear stability of this problem has been performed by Barletta and Nield (J. Fluid Mech., vol. 662, 2010, pp. 475-492) for PCF and by Barletta et al. (J. Fluid Mech., vol. 681, 2011, pp. 499-514) for PPF. These authors found that longitudinal rolls are the preferred mode of convection and the onset of instability is described through the governing parameters and , where , and are respectively the Gebhart number, the Péclet number and the Prandtl number. The current study focuses on the near-threshold behaviour of longitudinal rolls by using a weakly nonlinear analysis. We determine numerically up to third order the coefficients of the Landau amplitude equation and investigate in detail the influences on bifurcation characteristics of the different nonlinearities present in the system. The results indicate that for both PPF and PCF configurations (i) the inertial terms have no influence on the nonlinear evolution of the disturbance amplitude (ii) the nonlinear thermal advection terms act in favour of pitchfork supercritical bifurcations and (iii) the nonlinearities associated with viscous dissipation promote subcritical bifurcations. The global impact of the different nonlinear contributions indicate that, independently of the Gebhart number, the bifurcation is subcritical if Pr < 0:25 (Pr < 0:77) for PPF (PCF). Otherwise, for higher Prandtl number, there exists a particular value of Gebhart number, such that the bifurcation is supercritical (subcritical) if ). Finally, for both PPF and PCF, the amplitude analysis indicates that, in the supercritical bifurcation regime, the equilibrium amplitude decreases on increasing Pr and a substantial enhancement (reduction) in heat transfer rate is found for small Pr (moderate or large Pr).
On -tangent foliations of maximum modulus sets
No full textSi studia l'interrelazione fra le proprietà della foliazione -tangente (nel senso di L. Boutet de Monvel & A. Iordan [BI]) di una sottovarietà del bordo di un dominio fortemente pseudoconvesso e la geometria della seconda forma fondamentale di in
Creativity and Land Evaluation: Herculaneum and Vesuvius territory.
No full textThe actual interventions of enviromental retraining in Vesuvius territory start of presupposition to consolidate the protection of the volcano because of the elevated pressure of the impact on men.Particularly sheer toward the sea, the slopes of the volcano and lava castings followed during the time have characterized torrential courses of strong intensity of the waters that cross the territory of Herculaneum. The overlap of infrastructural works of the impending planning has made the compatibility of the natural environment more complex with the reasons for the urban installations. In the recent past the uncontrolled building expantion has contradicted the natural vocation of the landscape and it has jeopardized the equilibrium of the ecosystem. In line with the politics of territorial transformation of the Commune of Herculaneum, the interdisciplinary group of search has proposed the environmental restorations of the streets of water inside the integrated project of lightening of the housing density of the red zone according to the legislative and planning indications of Province Campania.The result of the search conducted through the historical restitution of the cartographies has proposed the definition of two ecological-historical-monumental corridors of hook-up of the Vesuvius Natural National Park up to the sea and the renaturalization through the river park of the principal river bed that licked up the ancient city of the renaturalization through the river park of the principal river bed that licked up the ancient city of the archeological excavations of Herculaneum
Application of instrumented micro-indentations to "in situ" mechanical characterization of wooden structures: Part I - Analysis of highly selected and decayed pinewood samples
No full textThe need for an experimental protocol, which allows determining overall mechanical properties of wooden structures by using a local, non-destructive and 'in situ' implemented testing procedure, has pushed towards the definition of several methodologies. In this work, an application of an instrumented micro-indentation, based upon a flat punch, is investigated, aimed at defining a technique less affected by typical discontinuities, defects and alterations of wooden materials, which, severely, jeopardize the reliability of all the other available testing procedures. First, a calibration of the experimental procedure is carried out, taking care of the influence on the collected data of the actual samples dimensions, their weight, number of growth rings, growth rings width, distance between indentation location and latewood layer and depth along indentation axis. Then, an application of testing procedure on pinewood is performed and strict criterion in executing experiments and choosing wooden specimens is defined to improve the reliability of results. At last, the capability of instrumented micro-indentations in detecting overall mechanical properties of new and decayed samples is checked out, stating the high sensitivity and effectiveness of the procedure. (c) 2005 Elsevier Ltd. All rights reserved
Combined use of scratch tests and CLA profilometry to characterize polyester powder coatings
No full textThe use of scratch tests at different stages of the curing process is of crucial importance in powder coatings as it can provide helpful information on formulating the base material, on setting curing operational parameters and, above all, on progressively establishing coating properties during baking In particular this paper deals., with the use of sliding spherical contact geometry to characterize the scratch response of a clear polyester topcoat electrostatically sprayed onto metallic substrate and baked under different time-temperature programs in a convection oven. Friction force and penetration depth were on-line monitored during scratch tests. Following this, residual deformation patterns were analyzed by using a combination of non-contact CIA profilometry and FE-SEM. Analytical examination and simple mathematical simulation of the experimental results found good correlations between the size of the deformed area after scratch and curing operating parameters. This makes it possible to map the scratch response of the clear polyester topcoats to ranges of curing conditions. (C) 2009 Elsevier B.V. All rights reserved
Existence of proper mappings from domains in
No full textLet be a pseudoconvex domain with real analytic boundary. We give conditions for the existence of a complex manifold and a branched, proper holomorphic mapping . The essential point here is that is required to have nonempty branch locus. In the strongly pseudoconvex case, a criterion is given in terms of the Moser normal form. In the weakly pseudoconvex case, we introduce the class of "weakly spherical" domains which, generally speaking, are the most likely to possess branched mappings. We then produce the corrisponding normal form, which gives a necessary and sufficient condition for the existence of branched, proper mappings on weakly spherical domain
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