Search results for "WOOD"
showing 10 items of 818 documents
Bio-inspired consolidants derived from crystalline nanocellulose for decayed wood
2018
Abstract Novel bio-inspired materials derived from crystalline nanocellulose (CNC) have been tested as wood consolidants. A suspension of CNC, produced by acid hydrolysis of cellulose and used as such or mixed with lignin and/or siloxane derivatives (PDMS), was applied on rotted wood samples of Norway spruce. X-Ray diffraction analysis on CNC powder showed high crystallinity index. Dynamic light scattering (DLS) measurement indicated a nearly uniform particle size distribution with an average hydrodynamic diameter for pure CNC smaller than that in the mixtures. Raman and FTIR spectroscopies suggested interactions between lignin, PDMS and CNC components. The storage modulus of wood samples, …
Overview and Essentials of Biomass Gasification Technologies and Their Catalytic Cleaning Methods
2016
Obtaining a tar-free biosyngas from biomass gasification processes has been the subject of many studies in the past 2 decades, and it still remains the major technologic and economic challenge. Unfortunately, the countless publications about gasification technologies and different techniques permitting reduction of the tar present at the outlet of gasifier reactors usually confuse inexperienced persons who attempt to further research this subject. More than presenting the basis of biomass gasification technologies and positioning them among other bioenergies, this work mainly aims at reviewing and comparing the different methods developed in order to produce a tar-free biosyngas. In this wa…
The circular economy model in the socio-economic systems of the wood industry : the case of the Tomsk oblast
2021
Using the Circular Economy (CE) model appears to be today a means more and more employed by organizations and public policies to overcome the problem of waste and bring it to a new stage of progress: the one of sustainability. If the issue of diagnosis and the need for a transition to CE is generally no longer discussed, the question of its implementation is all the more so, especially in Russia. Depending on the type of economic sector and the territory considered, an CE strategy cannot be viewed in the same way. Whether in terms of natural resources, labour or capital, different economic factors are brought to interfere in the search for circularity and sustainability. The objective of th…
Apres que Adam fon gitatz de paradis. Una leggenda occitana sul legno della Croce
2022
Critical edition of one of the Occitan versions of the Legend of the wood of the Cross ("Apres que Adam fon gitatz de paradis"). The edition is accompanied by an introduction, a linguistic study, a commentary and a glossary.
Two Family Firms in Comparison: Ahlström and Schauman During the 20th Century
2006
Ahlstrom and Schauman are among the most prominent companies in Finnish industrial history, being family firms engaged in different branches of economic activity. At first both were mechanical wood processing companies, but diversified later into the pulp and paper industry as well. Ahlstrom is even still today an important paper producer, whilst Schauman merged in 1987 with the Kymmene Corporation, and is nowadays a part of the UPM-Kymmene Corporation. This paper analyses the strategic decision processes undertaken in the named companies during the 20 century. The companies were not the most typical ones in the Finnish wood processing industry, but were, perhaps, typical examples of old fa…
L’USO DEI DISPOSITIVI DI RINFORZO LIGNEO NELL’ARCHITETTURA SICILIANA IN ETÀ MODERNA
2014
Il saggio studia l’uso dei dispositivi di rinforzo ligneo nelle architetture siciliane d’età moderna ponendo criticamente a confronto documenti di fabbrica, brani tratti dai trattati d’architettura, siciliani e non, e contributi offerti dalla letteratura storica non specialistica. Lo studio evidenzia la persistenza e le peculiarità d’uso di una tecnica che, molto diffusa in area mediterranea, in Sicilia si configura come una “invariante” del repertorio costruttivo tradizionale.
Firme di xilografi seicenteschi nelle matrici lignee della Galleria Estense di Modena
2017
<p>Though ancient literary sources has usually revealed a scarce interest for woodcuts, the study of writings and signatures in the woodblocks of the Galleria Estense in Modena proves that woodcutters did not always remain at the borders of art history. This is true both for the Venetian production of the first half of the 16th century and for the woodcutters linked to the Accademia Clementina in the Bologna area. Several 17th century woodblocks produced at least in part in Emilia-Romagna and mostly created for large-scale printing, show writings and signatures that can be led back to woodcutters whose specific identity is not easy to discover. This practice was probably more due to c…
Repertori di finestre nei cori benedettini tra Montecassino, Napoli e Palermo (1558-1589): intaglio ligneo e architettura
2022
In the processes of embellishment or reconstruction of the Benedictine churches in southern Italy and in Sicily, during the sixteenth century, great care was put in equipping them with magnificent wooden choirs. This contribution retraces an artistic journey that from the abbey of San Martino delle Scale, near Palermo, passing through the complex of SS. Severino and Sossio in Naples, goes back to the abbey of Montecassino. In fact, the latter is the starting point of the sequence of the three choirs examined, with a specific focus on the architectural themes present in them and in particular the series of windows carved into the backs of the upper stalls. The vicissitudes of the three choir…
MULTIDISCIPLINARY STUDY FOR THE DATING AND THE RESTORATION OF THE SAN VITO WOODEN PULPIT OF MUSEO DIOCESANO OF PALERMO
2017
The aim of the present research is to investigate the execution techniques of San Vito wooden pulpit in the Museo Diocesano of Palermo and to provide helpful information to dating it in addition to technical, historical and artistic evaluations. In particular, this paper describes the application of analytical techniques (imaging diagnostics techniques, Scanning Electron Microscopy coupled with X-ray Energy Dispersive spectroscopy Scanning Electron Microscopy-Energy Dispersive X-ray Spectroscopy and Fourier Transform Infrared Spectroscopy) to better understand the pulpit characteristics, both support and decoration, useful to plan and perform the correct restoration.
Activation of wooden vats with selected lactic acid bacteria for the year-round production of traditional Vastedda-like cheese
2014
Vastedda is a pasta filata cheese made from raw ewes’ milk without the addition of starter cultures. Cheese production is carried out in wooden vats characterized by microbial biofilms hosting lactic acid bacteria (LAB) responsible for the acidification of the curds. Vastedda cheese was traditionally produced during the summer season, but it is currently produced throughout the year. In order to minimize production variability, several LAB were isolated from Vastedda PDO cheeses, characterized for their technological potential (Gaglio et al., 2014a) and selected to obtain the best strain combination for the production (Gaglio et al., 2014b). In this study, the multiple strain culture compos…