2,238 research outputs found
I calchi per lo studio della cultura tessile a Pompei
No full textLa cultura tessile è una delle espressioni peculiari di quella connettività che caratterizza il mondo mediterraneo in antico. Per tali motivi, come categoria fondamentale della cultura materiale, i manufatti tessili sono attualmente uno dei campi di ricerca più fecondi e innovativi, soprattutto dal punto
di vista dell’interazione tra discipline umanistiche e scientifiche. Su questo orizzonte mediterraneo, il caso di Pompei si pone come osservatorio privilegiato di tali dinamiche: sia l’eccezionale documentazione archeologica di reperti tessili sia per la possibilità di identificare ambienti adibiti a tali operazioni e per ricostruire forme e tratti della cultura tessile di questa città antica. Il Progetto Sapienza Cultura Tessile a Pompei diretto da M. Galli indaga contesti, utensili e prodotti tessili conservati dagli scavi di Pompei. La documentazione sistematica dei frammenti tessili e calchi relativamente alle tracce di tessuti, indumenti, calzature e altri accessori è stata condotta da F. Coletti (Sapienza), che presenta anche una completa lista dei calchi analizzati, a cui si è aggiunto un contributo specifico di S. Mitschke, CEZA, Mannheim
The ‘Textile culture at Pompeii’ Project
No full textThere are various indications for textile production in the ancient city of Pompeii and its vicinity, but archaeological research was mainly focused on corresponding features in the urban structures so far. In this regard it has to be noted that the textiles themselves have only met little interest. The same applies to the elements of dress preserved as impressions on the so-called calchi. This apparent lack is remarkable, as the textile evidences from the Vesuvian area can not only be dated exactly, but also because they provide the possibility of a comparison of one type of material in different variants of preservation. In order to fill this lacuna the Research Project “Cultura Tessile a Pompei” was initiated. The aim of this multidisciplinary project is to provide new input to the ongoing debate on the significance of textile economy in the Vesuvian area in antiquity by looking on textile culture as a whole. Investigations on the spinning and weaving contexts and materials were carried out by M. Galli and C. Lemorini; selected examples of both calchi and textiles are evaluated by S. Mitschke and F. Coletti. The possibility of carrying out archaeometric analysis on textile micro-samples sheds light on local and imported goods as well as standardized and high quality textile products. By this means it can be stated that the results of these multidisciplinary research activities clearly reveal untapped potential in this field
Italian FDI integration with Southeast Europe: country and firm-level evidence
No full textSoutheast European countries have experienced significant economic integration into the world economy since 2000, through international capital flows and especially foreign direct investment (FDI). The present work sheds light on recent trends in Italy-Western Balkans economic integration through FDI. The methodology is based on a country level analysis and on case studies, designed to ascertain Italian firms’ underlying motives for investment in the area. Evidence suggests that the phenomenon is broader than official statistics would indicate: Italian firms often set up subsidiaries without formal or direct capital control. As integration in the area is a recent phenomenon, it is not surprising that the main determinants of Italian investments are cost reductions and new market opportunities, typical of initial stages of penetration in a foreign country. What is interesting in this context is that local entrepreneurs regard efficiency-seeking investments as profitable only if they are connected to market-seeking goals. We find evidence also of localized industrial development stimulated by the entry of Italian firms which is activating subcontracting relationships with existing firms in the host region.Southeast Europe-Italy integration,case study,foreign direct investment
Cultura tessile a Pompei: i tessuti e gli impianti per la lavorazione della lana (lanariae)
No full textSince 2014 the “Textile culture at Pompeii Project” is investigating a broad range of archaeological contexts and materials such as fabrics, textile imprints, tools and the production contexts in the Vesuvian city. The article focuses on some results concerning the spaces dedicated to the textile production process and the textile materials. Specifically, the significant case-study of a domus-workshop is briefly discussed, i.e. the Domus del Camillo (VII, 12, 23), which is to be interpreted as officina lanaria (in place of the misleading definition of lanifricaria). Moreover, the analysis of carbonized textile fragments offers new insights on the standardization degree of several wool products from the Vesuvian area. This quality of the Pompeian textile manufacturing is confirmed by some comparisons which can be detected on the fabric’s imprints on the human plaster casts of Pompeii
The significance and challenges of direct growth of graphene on semiconductor surfaces
No full textIn the past decade, fundamental graphene research has indicated several excellent electronic properties for graphene such as ultrahigh carrier mobility (~200,000 cm<sup>2</sup> / Vs), micrometer - scale mean free path, electron - hole symmetry and quantum Hall effect [ 1 - 6 ] . Such extraordinary properties , unmatched by any other conventional thin film material, make it an extremely promising material for next generation nano - integrated devices. Despite of this, several fundamental challenges still lay ahead before the introduction of graphene in nanodevices can be envisaged. One major challenge is the ability to confirm the outstanding reported properties for graphene grown over large - area s , on to appropriate substrates . \ud
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Since graphene was isolated first time in 2004 [ 7 ] , several techniques have been demonstrated to produce high quality graphene. The most common techniques are micromechanical exfoliation of single crystal graphite [ 7 ] , chemical vapor deposition (CVD) growth on transition metals and dielectric insulators [ 8 - 10 ] , chemical reduction of graphite oxide (GO) [ 11 ] , carbon nanotubes (CNTs) unzipping [ 12 ] , and high temperature thermal decomposition of silicon carbide (SiC) [ 13 ] . Among these methods, the highest performance graphene devices have been fabricated using mechanically exfoliated flakes. Carrier mobility in excess of ~200,000 cm<sup>2</sup> / V s has been reported for suspended single layer exfoliated graphene at room temperature [ 6 , 14 ] . CVD growth is widely used to produce large - area (up to 30 inch) , high quality graphene on transition metal substrates [ 8 , 15 ] . However, the graphene layers produced in the ways described above need invariably to be transfer red onto a semiconducting or insulating subs trate for device fabrication. Unfortunately, for several compelling reasons, this transfer approach is not compatible with the commercial fabrication of actual nanodevices. First, the transfer of flakes tends to affect the quality of the graphene layer in terms of contamination and formation of detrimental folds and ripples, which can ultimately degrade the performance of the electronic devices [ 16 , 17 ] ..
Multidisciplinary Approaches for the Investigation of Textiles and Fibres in the Archaeological Field
No full textThis book is dedicated to the analytical methods and approaches applied to ancient textiles and fibres. It offers an overview of textile archaeology as an archaeological discipline, presenting its history and developments up to state of the art approaches in the study of textiles fibres. It demonstrates how various fields of research have contributed to the development and growth of the discipline.
It establishes that fibre identification is a key element in ancient textile studies, showing its importance in understanding a large variety of economic and social aspects of human societies. However, fibre identification in archaeological textiles is not a straightforward task, mainly due to the vast variety of fibres people used in antiquity to make textiles and the more often than not poor condition of preservation of excavated textiles. Currently, comprehensive studies on more traditional fibre identification techniques, such as Scanning Electron and Optical microscopy, spectroscopic techniques (e.g. Fourier Transform Infrared spectroscopy - FTIR, Raman) and recent advances in αDNA and paleoproteomics, along with experiments on artificial ageing and deterioration of textiles, constitute a promising path down the exploration and analysis of archaeological textiles. This book shows how these techniques have advanced the discipline of textile archaeology and contributed to our understanding of the past.
This volume brings together scholars investigating fibres in a holistic way, by the incorporation of a variety of methods, in order to improve the current methodological approaches in the study and conservation of textiles and related material
LUIGI COLETTI E LA COMMISSIONE PER LA RESTITUZIONE DELLE PALE E DELLE STATUE NELLE DIOCESI DEL TRIVENETO
No full text"The love that made hell, paradise." Ouida re-writing the Paolo and Francesca theme in Held in Bondage
No full textThe bestselling Victorian author Ouida reveals in her novels, and, in particular, Held in Bondage, an extraordinary knowledge od Dante, by using characters and themes from the Commedia. The Paolo and Francesca theme actually constitutes part of the plot of the novel and is to be found in many of her other works, short stories and non-fiction writing
Investigations on alloy-burial environment interaction of archaeological bronze coins
No full textThis study is focused on ten Roman leaded coins from the archaeological site of the Magna Mater Temple (Rome,
Italy). These coins, buried for centuries in a peculiar environment of the archaeological area (i.e., the latrinae),
were investigated to explore the chemical composition and microstructure of the inner alloy. The opportunity to
examine the core of the alloy permitted to disclose information about the original composition as well as to infer
the interaction and the modification of the metal core during burial condition over centuries. Scanning electron
microscopy with energy dispersive spectroscopy (SEM-EDS) and Electron Microprobe Analysis (EMPA) techniques
have been employed to study each sample from rim to inner un-corroded core. The results showed that the
coins are a Cu-Sn based alloy enriched in Pb. The content of Cu in the Cu-rich area (i.e., the α-phase) is ca 99 wt%
and that of the Pb islands (i.e. the β-phase) reaches 97 wt%. The X-ray maps of the interface between the subexternal
layer/inner-core revealed the occurrence of high chloride content, in which the distribution of Cl and Pb
indicated the presence of lead chloride minerals. SEM-imaging highlighted also a deep corrosion of the patina
with cracks and pits. Underneath the corrosion layer, an area of the almost unaltered β-phase composing the bulk
material of the coin has been detected
Adsorption and Interfacial Chemistry of Pentacene on the Clean Si(100) Surface: A Density Functional Study
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