Search results for " Beni culturali"
showing 10 items of 230 documents
First discovery of orichalcum ingots from the remains of a 6th century BC shipwreck near Gela (Sicily) seabed
2017
Ingots recently recovered from the seabed near Gela, a major harbour of Sicily, reveal an unexpected side of ancient metallurgy. The ingots were found near remains of a ship and earthenware dated around the end of the VI century BC and probably coming from the eastern Mediterranean and the Aegean sea. The ingots were analysed by means of X-Ray Fluorescence spectroscopy via a portable spectrometer. Results indicate that they are mostly consist of copper and zinc although many of them have a significant amount of lead. This alloy is nowday called brass, but in ancient time it was know as orichalcum, one of the rarest and most precious alloy along with gold and silver. Only small items of oric…
New results in ancient Maya rituals researches: The study of human painted bones fragments from Calakmul archaeological site (Mexico)
2020
Abstract The funeral chambers of the ancient city of Calakmul (Mexico) and the individuals who were buried in them have brought in recent decades new knowledge about the beliefs and funeral customs of the pre-Hispanic Maya. Tombs and bodies were prepared as part of the rituals that should favor the return of ch'ulel to the Underworld, known as Xibalba by the ancient Maya. The ch'ulel is one of the two anemic entities that inhabit the individual, equivalent to our concept of the soul. Bodies preparation included coloured scented body ointments application, with a deep symbolic connotation and probably also a conservative purpose. The aim of this research was to characterize pigments and bind…
II) Wood pellets for home heating can be considered environmentally friendly fuels? Heavy metals determination by inductively coupled plasma-optical …
2016
Abstract The aim of the present study was to determine the concentrations of twelve potentially hazardous elements in wood pellet ashes obtained by the combustion of 13 pellet brands for sale in Italy, the impact of adding the ashes to soils and health risk of operator due to dust exposure. Samples were analysed by Inductively Coupled Plasma Optical Emission Spectrometry. The concentrations of heavy metals in ashes from stoves ranged from 0.41 to 7.2 mg kg − 1 for As, from 1.3 to 12 mg kg − 1 for Sb, from 1.8 to 12 mg kg − 1 for Zn, from 0.23 to 0.8 mg kg − 1 for Pb, from 0.18 to 2.8 mg kg − 1 for Ni, from 0.09 to 1.0 mg kg − 1 for Cd, from 0.46 to 3.4 mg kg − 1 for Cr, from 0.94 to 2.7 mg …
Wood pellets for home heating can be considered environmentally friendly fuels? Polycyclic aromatic hydrocarbons (PAHs) in their ashes
2016
This paper reports the results of the first quantitative investigations of PAHs in wood pellet ashes. Investigations were carried out into the fifteen PAHs identified by the US-Environment Protection Agency (US-EPA) as requiring priority monitoring; other non-US-EPA listed PAHs and perylene were also investigated. The total concentrations for the 17 investigated compounds, expressed as the sum of the concentrations (∑PAHs), in the ashes produced by the wood pellet combustion, ranged from 0.064mg kg-1 to 0.90mg kg-1 of dry weight with a means of 0.31mg kg-1. The lowest concentrations (<0.1mg kg-1) were measured in the conifer ash samples. Concentrations of PAHs found in this paper will al…
Sistemi informativi 3D per i BB.CC. e l'archeologia: il Castello di Maredolce a Palermo
2014
Il mondo della ricerca nel campo dei BB.CC. sta guardando con sempre maggior interesse all’uso di tecnologie informatiche integrate, che consentano di fornire e condividere in rete dati quantitativi e qualitativi, geometrici, posizionali, alfanumerici, relativi ai BB.CC., sfruttando l’interazione tra banche dati e modelli 3D. Tali modelli, dunque, oltre a fornire una ricostruzione virtuale del monumento con la possibilità di navigare ed analizzare l’oggetto in dettaglio, costituiscono lo strumento per accedere ad informazioni eterogenee (testi, immagini, sequenze video, ecc.) sui manufatti, raccolte ed organizzate in database relazionali interrogabili, al fine di una piena comprensione e co…
Solubility and acid-base properties and activity coefficients of chitosan in different ionic media and at different ionic strengths, at T=25°C
2009
Studies on the acid-base properties and solubility of a polyammonium polyelectrolyte (chitosan) with different molecular weights (MW 310 and 50 kDa), were performed at T=25 °C, in the pH range 2.5–7. The protonation of chitosan was investigated by potentiometry ([H+]-glass electrode) in NaCl, NaNO3 and mixed NaNO3+Na2SO4 ionic media, at different ionic strengths. Protonation constants were calculated as a function of dissociation degree α by means of two different models, namely, a simple linear model and the modified Henderson–Hasselbalch equation. Experimental data were also fitted using a model independent of α (Diprotic-like model), according to which the acid-base properties can be sim…
Voltammetric Analysis of Platinum in Environmental Matrices
2014
This article will summarize measurement data for Pt in different environmental samples obtained by the authors using a recently developed approach by voltammetric analysis. A fast accumulation of platinum and rhodium in the environmental and biological matrices has been observed in the last few years and concern has arisen about potential environmental and health risks. Voltammetry was used for the determination of Pt and Rh in airborne particulate collected in Palermo, Italy. Possible interferences by other environmental metals have also been evaluated. All samples show concentrations of Pt and Rh above average upper crust values. The Pt and Rh concentrations in particulate samples collect…
Creative LAB Alcamo. Una centralità creativa presso l’ex Collegio dei Gesuiti di Alcamo come polo culturale di riferimento del territorio
2015
Il sistema integrato di servizi culturali costituito dal Creative LAB Alcamo (CLA) è stato concepito come dispositivo di riqualificazione urbana e di sostegno allo sviluppo territoriale con la finalità interpretare, valorizzare con creatività e comunicare con efficacia l’identità del territorio alcamese. Il CLA prevede prioritariamente la messa a sistema delle risorse territoriali e del capitale urbano attraverso un più efficiente sistema di comunicazione, ideato sia per la popolazione locale in termini di riconoscibilità e identificazione nel proprio patrimonio culturale, sia per i fruitori ed i turisti in termini di offerta sistematica e organizzata di eventi culturali, di itinerari di vi…
Alcamo. La Città, il Territorio, la Storia. Guida agli Itinerari Culturali
2015
Alcamo ha conquistato un ruolo primario nella Storia della letteratura italiana grazie al suo poeta Ciullo d’Alcamo, appartenente alla Scuola Siciliana sorta nel XIII secolo attorno alla figura di Federico II, che, con il componimento in dialetto romanzo siciliano Rosa fresca aulentissima, ha contribuito a traghettare il latino volgare verso l’italiano. La notorietà di Alcamo si è poi estesa a livello internazionale grazie anche alla DOC del Bianco d’Alcamo, il pregiato vino fruttato che da più di un secolo e mezzo occupa un posto di rilievo nei mercati vitivinicoli mondiali. Oltre ai riconoscimenti ufficiali più noti, il fermento culturale e la ricchezza del territorio di Alcamo si sono es…
La città e il territorio di Alcamo : evoluzione e morfologia dell’insediamento
2015
Il ritratto della città e del territorio di Alcamo che emerge prepotentemente dalla sua storia, dal patrimonio storico e culturale, dal suo tessuto urbano, dalle analisi e dalle previsioni urbanistiche, restituisce l’immagine di un contesto urbano forte di un centro storico perfettamente riconoscibile e ampiamente integro, ancora vitale e generatore di una città dove si distinguono chiaramente le diverse fasi di espansione, i centri di aggregazione, le zone funzionali. Una città che ha alle spalle un territorio fertile, lavorato con cura nei secoli dai suoi abitanti, particolarmente vocato alla produzione vitivinicola di qualità e che l’ha resa celebre in tutto il mondo attraverso la D.O.C.…