Additive Manufacturing of Polypropylene Composites with Enhanced Mechanical and Electrical Properties

L'abstract è presente nell'allegato / the abstract is in the attachmen

Rheological behavior and morphology of poly(lactic acid)/low‐density polyethylene blends based on virgin and recycled polymers: Compatibilization with natural surfactants

Blends based on poly(lactic acid) and low-density polyethylene were compatibilized exploiting an innovative strategy involving the introduction of different mixtures of two sustainable liquid surfactants characterized by dissimilar hydrophilic–lipophilic ratios. The compatibilization method was first applied on blends made of virgin polymers, aiming at assessing the surfactant mixture inducing a more significant morphology refinement. Besides, to verify the effectiveness of the selected compatibilizers on recycled materials, the same process was carried out on blends based on reprocessed polymers. Interestingly, the compatibilization caused a significant microstructure modification, with a decrease of 54% of the mean size of the dispersed particles, in the case of virgin polymers-based blends, with a consequent increase of 19% of the dynamic elastic modulus. On the other hand, in the case of reprocessed polymers-based blends, a different compatibilizer efficiency was observed, as the noncompatibilized blend showed amore regular microstructure compared to the compatibilized counterpart

Cicerone, l'eloquenza, l'humanitas. Studi sull'opera e la fortuna di un orator e vir bonus romano

Curatela di articoli dedicati al tema "Cicerone, l'eloquenza, l'humanitas." con contributi interdisciplinari di letteratura latina, filologia classica e tardo-antica, storia della filosofia, diritto romano, cinema

Atmospheric CO2 Concentrations in Caves Protected as Nature Reserves and Related Gas Hazard

Atmospheric CO2 concentrations can reach high levels inside natural caves, representing a hazardous condition for both humans frequenting the underground environment and its safeguard due to the corrosion of speleothems induced by the acidification of atmospheric moisture. These issues are particularly critical for the eco-sustainable management of caves protected as nature reserves and undergoing touristic exploitation. In this paper we present the results of the C6 project, which was activated in 1999 for the monitoring of air quality inside three caves protected as nature reserves in Sicily (Italy). Near-real-time and spot measurements of air temperature and CO2 concentration have been carried out since the year 2000, giving the opportunity of evaluating the gas hazard for visitors and its potential impact on the protected underground environments, as well as the influence of meteorological and hydrological conditions in driving carbon dioxide accumulations. The analysis of data acquired in the hypogeal atmosphere, and their comparison with analogous epigeal measures, indicates that carbon dioxide accumulation is controlled by a complex interaction among cave topography, meteorological dynamics, gaseous exchanges between groundwaters and the atmosphere, and human fruition. This last factor, under particular conditions, can surprisingly diminishing underground CO2 concentrations

Atmospheric CO2 Concentrations in Caves Protected as Nature Reserves and Related Gas Hazard

Atmospheric CO2 concentrations can reach high levels inside natural caves, representing a hazardous condition for both humans frequenting the underground environment and its safeguard due to the corrosion of speleothems induced by the acidification of atmospheric moisture. These issues are particularly critical for the eco-sustainable management of caves protected as nature reserves and undergoing touristic exploitation. In this paper we present the results of the C6 project, which was activated in 1999 for the monitoring of air quality inside three caves protected as nature reserves in Sicily (Italy). Near-real-time and spot measurements of air temperature and CO2 concentration have been carried out since the year 2000, giving the opportunity of evaluating the gas hazard for visitors and its potential impact on the protected underground environments, as well as the influence of meteorological and hydrological conditions in driving carbon dioxide accumulations. The analysis of data acquired in the hypogeal atmosphere, and their comparison with analogous epigeal measures, indicates that carbon dioxide accumulation is controlled by a complex interaction among cave topography, meteorological dynamics, gaseous exchanges between groundwaters and the atmosphere, and human fruition. This last factor, under particular conditions, can surprisingly diminishing underground CO2 concentrations

Troiane classiche e contemporanee

Il mito fondativo della caduta di Troia, nel suo passaggio dall’epos al teatro, ha dato origine a due tra le tragedie più commoventi e perturbanti della letteratura classica. Le Troiane di Euripide e di Seneca mettono in scena, infatti, il dramma della guerra – e quello ancor più spietato dei postumi della guerra – dalla prospettiva di chi è sconfitto due volte: le donne e gli innocenti, vittime sia della morte (dei mariti, dei padri, dei figli), sia della vita, che li costringe a sopportare ulteriore violenza, morte e schiavitù. I saggi raccolti in questo volume analizzano diversi aspetti letterari delle due tragedie ed esplorano snodi fondamentali della loro ricezione e della loro fortuna critica: dal momento della riscoperta delle forme tragiche nel rinascimento europeo all’arte moderna e contemporanea, dalle riletture cinematografiche alle messe in scena del teatro contemporaneo, fino all’analisi dei testi alla luce delle moderne categorie dei Trauma Studies.The foundational myth of the fall of Troy, in its movement from epic to drama, has given rise to two of the most moving and unsettling tragedies of classical literature. The Trojan Women by Euripides and by Seneca stage the tragedy of war – and its even more ruthless aftermath – from the perspective of its victims, women and innocent children, who are defeated both by death (the death of husbands, sons, fathers) and by life itself, which forces them to suffer further violence, further death and slavery. The essays collected in this volume analyse different literary aspects of the two plays and explore pivotal moments in their reception and their critical assessment. They range from the rediscovery of tragic forms in the European Renaissance to modern and contemporary art, from cinema to contemporary theatre performances, even up to textual analysis in the light of Trauma Studies theory