Search results for "WOOD"
showing 10 items of 818 documents
Microscopic approach to investigate constitutive materials and technique of San Vito wooden pulpit of Museo Diocesano of Palermo
2015
The aim of this research was to assess the techniques used to create and decorate the wooden pulpit of San Vito and to verify the state of preservation of the finishing materials of the artwork.
The Impact of Climate, Resource Availability, Natural Disturbances and Human Subsistence Strategies on Sicilian Landscape Dynamics During the Holocene
2022
This paper presents a multidisciplinary summary of the most recent discoveries and hypotheses concerning factors driving the human subsistence economy and landscape shaping in Sicily during the Holocene. A number of scientific papers have recently pointed out the key role played by paleogeography, resource (water, food) availability and natural disturbances (volcanic eruptions, tsunamis) in local human activities. Modern anthropology and archaeology increasingly use biological remains (e.g. soils, bones, wood, plant macroremains, pollen) to better understand how human communities managed to survive and spread. Likewise, refined reconstructions of past human demographic fluxes and socio-econ…
La traduzione costruttiva lituana negli edifici di culto in legno tra i secc. XVIII e XIX
2014
Lithuania is situated in a highly forested Northeastern Europe area and has a variety of wooden buildings. Among the wooden structures we enumerate the religious buildings, churches and bell towers, rich of historic values, presenting different forms and sizes, a complex design and stratified construction phases. The present work aims to study this interesting topic and intends not only to analyze the architectural typology but even more the technological and structural aspects, that had suggested the most influences on building techniques during the centuries.
Wooden churches in Lithuania : analysis of failures and degradations, guidelines for restoration
2016
La maggior parte degli edifici di culto in legno lituani versa in una penosa condizione di degrado, poiché le comunità locali non sempre rivolgono la dovuta attenzione ai fenomeni di dissesto e degrado e spesso le competenze tecniche capaci di salvaguardare tale patrimonio sono andate perdute. Le cause più frequenti di questo stato di fatto derivano da una inadeguata manutenzione (sia ordinaria che straordinaria), dal deterioramento del legno (ascrivibile per lo più ad infestazioni di funghi e insetti) o da dissesti e stati deformativi delle strutture dovuti ad errori nella tecnica costruttiva o all’errato dimensionamento delle sezioni costitutive degli elementi di base delle singole unità …
La ricostruzione dell'abside in alcuni esempi della seconda metà del XVI secolo a Palermo
2015
Il contributo ha l’obiettivo di studiare alcuni casi di ricostruzione dell’abside eseguiti in edifici chiesastici palermitani nella seconda metà del XVI secolo. Si tratta delle chiese di San Sebastiano, San Francesco d’Assisi e San Martino delle Scale (all’interno dell’omonima abbazia), in cui, nella seconda metà del Cinquecento, per motivi liturgici, l’abside originaria viene “trasformata”, in un’abside “piatta”, al fine di potervi inserire il Coro ligneo. Il nuovo posizionamento del Coro, in conseguenza della Riforma tridentina - problematica centrale nell’Europa di età moderna – suscita, anche in questi casi palermitani, dibattiti e controversie. Il cambiamento della forma dell’abside de…
Effect of Vibration on the Quality of Strawberry Fruits Caused by Simulated Transport
2016
Mechanical damage of agricultural products is one of the main problems in the harvest and postharvest chain due to the large economic loss that the shelf life reduction could generate. Measurements of change in the chemical components of highly perishable products and microbial growth under different static and dynamic loads is the first step in the development of intelligent logistic units that could help in predicting the residual shelf life in order to minimize losses along the supply chain. In our research, the effects of vibration along the supply chain of a case study were analyzed on strawberry (Fragaria x ananassa) and woodland strawberry (Fragaria vesca) in terms of microbiological…
“SAGOME” IN SICILY: SUBJECTS, FUNCTIONS, TECHNIQUES AND THE CASE STUDY OF NICOSIA
2016
This article analyzes the iconographic subjects, the practical functions and the compositional techniques of a particular form of artistic representation that was popular between the 18th and 19th centuries: these are the painted “sagome” (cut-outs) found in Sicily. Particular attention is paid to a series of six paintings, unknown until now, executed on shaped wooden panels and painted on both sides, which are stored in the library of the Convent of the Capuchin Friars Minor of Nicosia (Enna).
The Role of Cork Powder as a Filler for Epoxy Putties Used as Gap Fillers of Wood
2009
Two-Dimensional Modeling of an Externally Irradiated Slurry Photoreactor
2013
Abstract A batch cylindrical photocatalytic reactor, externally irradiated by 1–6 UV fluorescent lamps and containing a stirred slurry of polycrystalline TiO2, was modeled by coupling a modified Langmuir–Hinshelwood kinetics together with a two-dimensional light intensity field. The radiation field has been determined on the main assumptions of diffuse radiation, isotropic scattering and negligible backward reflected photon flow. The model has been applied to the photocatalytic oxidation of organic substrates which do not undergo homogeneous photochemical degradation. The model is characterized by the following four parameters: the kinetic constants of substrate adsorption, desorption and d…
Guidelines for the Assessment and the Validation of the Rate Law of Slurry Photocatalytic Reactions
2017
The assessment of the rate law of slurry photocatalytic reactions appears to be a hard task, mainly because in this type of reactions the average rate of reaction, which is experimentally observed in a real reactor, could be very different from the “true” (intrinsic) rate of reaction, which cannot be measured directly. In the present work, it is shown how a proper mathematical model allows the utilization of the differential and/or the integral methods of kinetic analysis. The mathematical model must take into account not only the momentum and the mass balances, but also the radiative transfer equation. However, the discrimination among different proposed kinetic laws remains difficult sinc…