Search results for "cienza"
showing 10 items of 1535 documents
Sviluppo economico e sviluppo umano: una nota sulla classificazione ONU di alcuni paesi
2004
Workshop Ricioc Made in Sicily/Nuove forme per il cioccolato di Modica.
2008
Representation of Stationary Multivariate Gaussian Processes Fractional Differential Approach
2011
In this paper, the fractional spectral moments method (H-FSM) is used to generate stationary Gaussian multivariate processes with assigned power spectral density matrix. To this aim, firstly the N-variate process is expressed as sum of N fully coherent normal random vectors, and then, the representation in terms of HFSM is used.
Introduzione. La spola e la synkrisis
2010
Prometeo genetista. Profitti delle tecniche e metafore della scienza
2016
Il saggio di Claude Calame affronta una tematica di grande rilievo scientifico, ossia il confronto tra il valore epistemologico e sociale dell'uso delle arti tecniche nell'antica Grecia e il valore epistemologico del linguaggio della scienza moderna in particolare applicato all'ambito della genetica e delle moderne biotecnologie e scienze di laboratorio. Lo spunto del confronto è offerto dall'analisi storico-culturale e antropologica del mito di Prometeo, come è stato diversamente declinato dai vari autori dell'antichità classica, a partire da Esiodo sino a Platone, passando per l'autore del dramma "Prometeo incatenato". In una prospettiva di indagine antropopoietica, le arti tecniche perme…
Tempo ed efficienza nell'azione amministrativa
2010
Il lavoro si sofferma in particolare sull’importanza che la legislazione sull’attività amministrativa autoritativa attribuisce alla dimensione temporale, a partire dalla legge 241/90 fino alla l. n. 69 del 2009. Il fattore tempo ha ormai assunto la dignità di > collegato alla > dei rapporti tra Amministrazione e privati, che è un valore costituzionalmente garantito. In questo senso rilevano due disposizioni della l. 69/2009: l’art. 29, il cui comma 2-bis ha ricondotto alla categoria dei livelli essenziali delle prestazioni, sia l’obbligo di concludere il procedimento entro il termine prefissato, sia quello di garantire la durata massima dei procedimenti. E l’art. 2-bis, che ha previsto, tra…
Effect of NaOH Treatment on Properties of Phoenix Sp. Fiber
2016
The aim of this paper is to investigate the effect of an alkali treatment on physical, chemical, mechanical, and morphological properties of Phoenix Sp. fibers. The use of natural fibers as reinforcement in polymer composites requires a deep investigation to understand their behavior and which treatment is more appropriate to improve the quality of the untreated material. For this reason, fibers were extracted from the petioles of the Phoenix Sp. plant and they were treated with NaOH solution in different weight concentrations (5%, 10%, and 15%). The mechanical behavior was investigated through tensile test on single fiber at different gauge length (20 mm, 30 mm, 40 mm, 50 mm, and 60 mm). C…
The thermal performances of historic masonry: In-situ measurements of thermal conductance on calcarenite stone walls in Palermo
2018
Abstract Rich literature explores materials and construction techniques of historic buildings, but limited information is available about the thermal and hygrometric features of their envelope. Nevertheless, accurate hygrothermal data are essential for identifying effective energy upgrade measures, which must be compatible with the conservation of the architectural heritage. In order to fill this gap, it is necessary to refer to local contexts, where the variety of historic buildings is limited and their material and construction features are comparable. This paper focuses on historic masonry walls and discusses the results of twenty in-situ measurements of thermal conductance, performed al…
Novel green bio-composite geopolymeric thermo-plasters for innovative building applications: upcycling spent coffee ground
2022
This study proposes the reuse of spent coffee ground and biomass fly ash in the development of green geopolymeric thermo-plastering for innovative building applications. The former waste is the major residue of the brewing process, that is usually used as fertilisers or disposed of in landfill with extreme harmfulness for the natural environment. The latter is an industrial waste generated during the Kraft paper-pulp process, that is usually landfilled. The mortar is produced with a combination of metakaolin (30 wt.%) and biomass fly ash (70 wt.%), and natural siliceous sand filled with spent coffee ground (up to 17.5 wt.%). The high amount of reused waste makes the material an optimum cand…