1,215 research outputs found
Book Reviews
No full textBook Review 1Book Title: BoiardoBook Authors: Jo Ann Cavallo & Corrado Confalonieri Milano: Unicopli, 2018.Reviewed by: Andrea PriviteraBook Review 2Book Title: All’ombra della memoria. Saggi su Paolo Volponi, 2° ed. riveduta e ampliataBook Author: Salvatore RitrovatoPesaro: Metauro, 2017Reviewed by: Diego SalvadoriBook Review 3Book Title: Francesca Turini Bufalini e la “letteratura di genere”Book Author: John ButlerCon una premessa di Antonio Lanza. Città di Castello, PG: Nuova Prhomos, 2018Reviewed by: Giulia Tonell
Giulia Veronica Varisco
No full textThe headword explains the biography and the contribution of the author Giulia Varisco to the children's literatur
Ecosystem-Based Adaptation Approach and Adaptation Planning Support Tools: Potential Implementation for the Urban Context
No full textClimate Change (CC) is having a progressively negative impact on natural resources management. It, indeed, worsens existing environmental challenges, placing socio-ecological systems in a situation of new risks. This process invites to reflect about the Ecosystem-based Adaptation (EbA) approach, which combines concepts of sustainable land use and conservation in one integrated adaptation strategy. Challenges related to definition and integration of the EbA process into urban context exist, in particular concerning the necessity of a systemic methodology deployment in urban planning instruments and adaptation processes. As a possible entry point, this work aims to identify the adaptation planning support tools for building an EbA process at city scale, defining a possible methodology for tracing a shortlist of tools supporting EbA principles. The outcomes have demonstrated that tools, albeit not having exhaustive capacities, provide important directions for theoretical investigation and consequent actions. There is a need for tools explicitly addressed to the EbA approach, not still homogeneously supported in the various stages of the adaptation framework. Hence, they offer useful insights to establish a comprehensive adaptation process able to integrate EbA in urban planning practices. To date, this represents one of the triggering points for the implementation of an operational Nature-based Solution (NbS) framework
Ytterbium Disilicate/Monosilicate Multilayer Environmental Barrier Coatings: Influence of Atmospheric Plasma Spray Parameters on Composition and Microstructure
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Ytterbium Disilicate/Monosilicate Multilayer Environmental Barrier Coatings: Influence of Atmospheric Plasma Spray Parameters on Composition and Microstructure
by Giulia Di Iorio,Laura Paglia *ORCID,Giulia PedrizzettiORCID,Virgilio GenovaORCID,Francesco MarraORCID,Cecilia BartuliORCID andGiovanni PulciORCID
INSTM Reference Laboratory for Materials and Surface Engineering, Sapienza University of Rome, Eudossiana 18, 00184 Rome, Italy
*
Author to whom correspondence should be addressed.
Coatings 2023, 13(9), 1602; https://doi.org/10.3390/coatings13091602
Original submission received: 10 August 2023 / Revised: 31 August 2023 / Accepted: 11 September 2023 / Published: 13 September 2023
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Abstract
SiC/SiC ceramic matrix composites (SiCf/SiC CMCs) are regarded as the new materials for the hot-section components of aircraft gas turbine engines, since they have one-third of the density of metallic superalloys, a higher temperature capability, good mechanical strength, and excellent thermal shock resistance. However, high-temperature water-vapor-rich combustion gases can induce severe surface recession phenomena in SiC/SiC leading to component failure. For this reason, it is necessary to design protective coatings, i.e., environmental barrier coatings (EBCs), able to protect the SiC/SiC surface in combustion environments. In the present work, ytterbium monosilicate (Yb2SiO5), stable when exposed to water vapor at high temperatures, and ytterbium disilicate (Yb2Si2O7), characterized by a thermal expansion coefficient closer to that of the substrate, were selected for a multilayer EBC system. EBCs were processed using the atmospheric plasma spray (APS) technique. A set of deposition parameters were tested, varying the power of the torch, and the composition and microstructure of the deposited coatings were studied in terms of porosity, crack density, and post-deposition phase retention by performing SEM, EDS, and XRD analysis. The results allow for the definition of the influence of deposition parameters on the final properties of multilayer EBC coatings
[Detergents containing micro-organisms "probiotics": is there a role for the sanitation of healthcare settings?]
No full textLa sanificazione degli ambienti ospedalieri riveste un ruolo importante per le implicazioni di ordine igienico-sanitario che influiscono sulla qualità e la sicurezza delle cure erogate e sull’efficienza ed efficacia dell’organizzazione dei servizi. In questo ambito è di recente emerso un orientamento verso l’impiego di detergenti con minor impatto ambientale, coerentemente con le raccomandazioni europee sul green procurement. Alcuni produttori, seguendo tale tendenza, hanno suggerito l’uso di detergenti contenenti batteri “probiotici”. Prodotti a base di microrganismi viventi sono stati, fino ad oggi, validati e impiegati in ambito ambientale per il bio-risanamento (bio-remediation), ovvero l’utilizzo di sistemi biologici con l’obiettivo di ridurre l’inquinamento dell’aria, delle acque o del suolo. Il bio-risanamento sfrutta le vie metaboliche dei micrororganismi, in particolare di quelli che sono in grado di metabolizzare sostanze inquinanti, quali ad esempio fenoli, benzene, toluene, olii, idrocarburi aromatici, in modo naturale (convertendoli in acqua e anidride carbonica), con un basso impatto ambientale e offrendo una valida alternativa ai metodi tradizionali che non risultano sempre efficaci oltre ad essere costosi
New approach to analyze relationships between agritouristic supply and territory
No full textThis paper defines the phenomenon of agritourism in Friuli Venezia Giulia (NE Italy) at the end of 2009, in the light of the multifunctionality of agritouristic farms and taking into account the land use. The proposed statistical approach to outline the situation includes (a) the classification of the variables linked to agritouristic supply to find the main supply types, (b) the Principal Component Analysis (PCA) in order to classify the regional agritourisms according to their supply and (c) the Canonical Correspondence Analysis (CCA) to investigate the relationships between agritouristic supply, agricultural land use and territory. Since the CCA is widely used only in social and environmental sciences, this work represents its first application in agribusiness field. The method becomes important during the agricultural policy planning processes because it provides decision makers with a means of rapid assessment of the relationships between rural supply and land uses on the territory.Rural Tourism, Agritourism, Canonical Correspondence Analysis (CCA), Agricultural Policy., Agribusiness, Agricultural and Food Policy, Q13, Q18.,
Electrostatic force microscopy and potentiometry of realistic nanostructured systems
No full textWe investigate the dependency of electrostatic interaction forces on applied potentials in electrostatic force microscopy (EFM) as well as in related local potentiometry techniques such as Kelvin probe microscopy (KPM). The approximated expression of electrostatic interaction between two conductors, usually employed in EFM and KPM, may loose its validity when probe-sample distance is not very small, as often realized when realistic nanostructured systems with complex topography are investigated. In such conditions, electrostatic interaction does not depend solely on the potential difference between probe and sample, but instead it may depend on the bias applied to each conductor. For instance, electrostatic force can change from repulsive to attractive for certain ranges of applied potentials and probe-sample distances, and this fact cannot be accounted for by approximated models. We propose a general capacitance model, even applicable to more than two conductors, considering values of potentials applied to each of the conductors to determine the resulting forces and force gradients, being able to account for the above phenomenon as well as to describe interactions at larger distances. Results from numerical simulations and experiments on metal stripe electrodes and semiconductor nanowires supporting such scenario in typical regimes of EFM investigations are presented, evidencing the importance of a more rigorous modeling for EFM data interpretation. Furthermore, physical meaning of Kelvin potential as used in KPM applications can also be clarified by means of the reported formalism
Detergenti contenenti microrganismi “probiotici”:<BR>esiste un loro ruolo per la sanificazione <BR>degli ambienti sanitari?
No full textLa sanificazione degli ambienti ospedalieri riveste un
ruolo importante per le implicazioni di ordine igienico-sanitario
che influiscono sulla qualità e la sicurezza delle cure
erogate e sull’efficienza ed efficacia dell’organizzazione dei
servizi. In questo ambito è di recente emerso un orientamento
verso l’impiego di detergenti con minor impatto ambientale,
coerentemente con le raccomandazioni europee sul
green procurement. alla luce delle conoscenze attuali, appare
a nostro parere opportuno adottare il “principio di precauzione” e procrastinare l’introduzione dei detergenti contenenti
microganismi “probiotici” fra le pratiche ammissibili
per la sanificazione in ambiente ospedaliero in attesa di ulteriori
evidenze di efficacia e sicurezz
Correction to: Safety and Psychological Outcomes of Tandem t:Slim X2 Insulin Pump with Control-IQ Technology in Children, Adolescents, and Young Adults with Type 1 Diabetes: A Systematic Review
No full textThe second author name was incorrectly published as Giula Maria Smylie. The correct name is Giulia Marie Smylie. The original article has been corrected
Scrivere senza anestesia. La chiarezza di Giulia Niccolai
No full textIl saggio colloca storicamente la narratrice e poetessa Giulia Niccolai nel canone del Novecento letterario italiano discutendone poetica e cifre stilistiche. L'ampia analisi proposta tocca tutte le opere dell'autrice evidenziandone i legami intertestuali, anche tra poesia e narrativa, e i progressivi sviluppi in un arco cronologico esteso, tra anni Sessanta e primi anni Duemila. Lo studio coglie anche l'importanza dei riferimenti alle arti visive, in particolare alla fotografia, che Giulia Niccolai ha praticato in prima persona negli anni della Neoavanguardia, e alla pittura americana.The essay places the narrator and poet Giulia Niccolai in the canonical twentieth century Italian literary discussing her poetics and stylistic figures. The wide analysis proposed touches all the works of the author highlighting the intertextual links, also between poetry and narrative, and the progressive developments in an extended chronological period, between the Sixties and early Twenties. The study also captures the importance of references to the visual arts, especially photography, which Giulia Niccolai has practiced in the years of the Neo-avant-garde, and to American painting
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