Search results for "pellet"
showing 10 items of 129 documents
Il marchio MB negli argenti acesi tra XVIII e XIX secolo
2013
Il marchio MB nell'argenteria acese tra XVIII e XIX secolo può essere riferito a Mario Bottino sr., Mario Bottino jr. o Mariano di Bella. Il saggio indica le differenze stilistiche tra i tre autori e le differenti caratteristiche dei rispettivi marchi, così da consentirne un'identificazione precisa.
Divina Instrumenta. Argenti liturgici nelle chiese di Gangi
2022
Il volume, che dimostra l’unicità di preziosi manufatti siciliani dei secoli passati, focalizza, per la prima volta, l’analisi su opere d’arte sacra, che, forgiati in oro, argento e rame ed arricchiti dal corallo, utilizzato con forte valenza simbolica, da smalti policromi e da pietre dure, sono custoditi nelle diverse e ricche chiese di Gangi (Pa), centro delle alte Madonie. Le suppellettili liturgiche sono state realizzate da maestranze siciliane e non, dalla fine del Trecento, quando nell’Isola circolavano opere di origine toscana e ligure, agli inizi dell’Ottocento, secolo caratterizzato dall’avvento del rigoroso e sobrio stile neoclassico. Commissionate da ecclesiastici, nobili e giura…
Shot-clay MX-80 bentonite: An assessment of the hydro-mechanical behaviour
2014
This study presents the results of an experimental study conducted to characterise the hydro-mechanical behaviour of shot-clay MX-80 bentonite. In the shot-clay process, granular bentonite was mixed continuously with water and shot on the walls of a tunnel section at the Grimsel Underground Research Laboratory (URL), in Switzerland. The shot-clay was placed to create a layer of bentonite in direct contact with the host rock to avoid preferential water and/or gas flow along the tunnel wall. Samples for an experimental programme were collected during the shooting. The index properties, microstructural features, swelling potential and water retention properties of the shot-clay were analysed. …
Argenti messinesi ad Alcara Li Fusi
2013
L’autore studia un importante novero di suppellettili liturgiche di manifattura messinese presenti ad Alcara Li Fusi, comune della provincia di Messina. Questi manufatti, molti dei quali inediti, fanno parte della collezione del museo di Arte Sacra del piccolo centro dei Nebrodi. L’articolo è un ulteriore contributo per tracciare un quadro storico-artistico il più esaustivo possibile sulla, non ancora ben conosciuta, maestranza della città dello Stretto.
On the self-heating behavior of upgraded biochar pellets blended with pyrolysis oil: Effects of process parameters
2020
Abstract Biochar obtained from biomass pyrolysis is a promising carbon neutral material which can be used in substitution of fossil coal and coke in metallurgical applications. Biochar’s mechanical properties improve significantly without compromising reactivity, when upgraded by densification with pyrolysis oil and reheated. However, upgraded biochar pellets use in the industry is limited due to the risks associated with self-heating. This issue must be seriously considered for further industrial production of upgraded biochar pellets. Self-heating oven tests are generally time-consuming and limit the possibility of testing various potential solutions. The aim of this work was both to inve…
From wood pellets to wood chips, risks of degradation and emissions from the storage of woody biomass – A short review
2016
Abstract The compounds in stored woody biomass degrade as a result of chemical and/or biological processes during storage. These processes produce gaseous emissions. Recent studies concerning gaseous emissions from wood pellet storages are reviewed herein. The applicability of the results from pellet research to wood chips is discussed. Thorough scientific understanding on the storage phenomena of wood chips is extremely important as the threat of climate change and the need to reduce greenhouse gas emissions have led to an increased need to large scale wood chip storage to ensure supply. Typically the gases produced from stored woody biomasses are carbon monoxide (CO), carbon dioxide (CO 2…
Torrefied versus conventional pellet production – A comparative study on energy and emission balance based on pilot-plant data and EU sustainability …
2015
Abstract Torrefaction is an emerging technology which enables greater co-firing rates of biomass with coal. To date however there has been a lack of real production data from pilot-scale torrefaction plants. Without such data any environmental benefits of torrefied pellet production are difficult to quantify. In this study data on consumable inputs from a semi-industrial torrefaction plant and the physical properties of produced pellets are used to analyse energy input and air emissions of torrefied pellet production and product transport. EU sustainability criteria are used to compare CO2-equivalent emissions from torrefied and conventional pellet production starting from harvesting of log…
Physical, chemical and mechanical evolution of the fuel-cladding interface in irradiated PWR fuel rods
2022
During the fuel irradiation in nuclear reactor, the fuel-cladding assembly is exposed to several irradiation-induced modifications. The fuel swelling coupled with cladding creep leads to a contact between the fuel and the cladding. The oxygen transport from the UO2 fuel to the zirconium layer induces progressively the Zr-cladding oxidation. This oxidation is initially local with the formation of islets. Then, with the increasing burnup of the fuel, it conducts to a continuous layer of about 8-µm thickness, localized at the fuel-cladding interface. At high burnup, zirconia growths anchor themselves in the periphery of the fuel (which is restructured) leading to pellet/cladding interlocking. …
The effects of biomass co-gasification and co-firing on the development of combustion dynamics
2018
Abstract Effects of wheat straw co-firing with gas (propane flame) and co-gasification/co-combustion with wood pellets on the development of thermo-chemical conversion of biomass pellets and on heat energy production were experimentally studied and analyzed with the aim to improve the gasification/combustion characteristics and the applicability of wheat straw as an alternative energy source for cleaner heat energy production. The results suggest that the wheat straw co-firing with propane provides an enhanced thermal decomposition of pellets with more complete combustion of volatiles increasing thus the heat output at thermo-chemical conversion of wheat straw and the produced heat energy p…
Gli argenti liturgici dei Padri Liguorini di Agrigento
2010
Il contributo offre un ampio quadro delle suppellettili in argento esposte nella mostra "Arredi e Collezioni dei Padri Liguorini di Agrigento. Tutela e conservazione", evidenziandone l'alta qualità artistica e la varietà tipologica e cronologica.