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Properties and interactions – melting point of tribromobenzene isomers
2021
The melting points of tribromobenzene isomers are correlated with the number, nature and distribution of intermolecular interactions in their structures.
Closed-loop recycling. A case study of films for greenhouses
2010
Abstract The degradation undergone by plastic films used for greenhouse coverage is the main cause of the worsening of the processability, of the mechanical properties and of the durability of secondary materials obtained by their recycling. This means that this secondary material cannot be processed to produce films for the same applications (closed-loop recycling). In this work different strategies are proposed to improve the processability, some mechanical properties and the resistance to photo-oxidation of these secondary materials. In particular, homopolymer blends or multilayer films where the secondary material is used in combination with virgin polymer give the best results.
Advanced descriptors for long-range noncovalent interactions between SARS-CoV-2 spikes and polymer surfaces.
2021
The recent pandemic triggered numerous societal efforts aimed to control and limit the spread of SARS-CoV-2. One of these aspects is related on how the virion interacts with inanimate surfaces, which might be the source of secondary infection. Although recent works address the adsorption of the spike protein on surfaces, there is no information concerning the long-range interactions between spike and surfaces, experimented by the virion when is dispersed in the droplet before its possible adsorption. Some descriptors, namely the interaction potentials per single protein and global potentials, were calculated in this work. These descriptors, evaluated for the closed and open states of the sp…
A real-space approach to the analysis of stacking faults in close-packed metals: Modelling and Q-space feedback Longo Alessandro
2020
An R-space approach to the simulation and fitting of a structural model to the experimental pair distribution function is described, to investigate the structural disorder (distance distribution and stacking faults) in close-packed metals. This is carried out by transferring the Debye function analysis into R space and simulating the low-angle and high-angle truncation for the evaluation of the relevant Fourier transform. The strengths and weaknesses of the R-space approach with respect to the usual Q-space approach are discussed.
Modelli ed evoulzione delle politiche
2008
Questo contributo propone alcune riflessioni utili all’inquadramento ed alla valutazione delle politiche a sostegno dell’innovazione. L’attenzione viene posta, in particolare, sull’evoluzione dello scenario nel quale opera l’impresa innovativa, sul ruolo di alcune tipologie di agglomerazioni emerse in questo nuovo scenario, quali le reti per l’innovazione ed i distretti tecnologici, sui sistemi territoriali innovativi nei quali i processi istituzionali hanno un ruolo sempre più importante, come nel caso dei sistemi d’innovazione nazionale e regionale, ed infine sulla questione dell’identificazione e della misurazione dei fattori chiave dell’innovazione utili per una valutazione delle politi…
Preliminary results of a PV closed greenhouse system for high irradiation zones in south Italy
2011
Exciton and multiexciton optical properties of single InAs/GaAs site-controlled quantum dots
2013
We have studied the optical properties of InAs site-controlled quantum dots (SCQDs) grown on pre-patterned GaAs substrates. Since InAs nucleates preferentially on the lithography motifs, the location of the resulting QDs is determined by the pattern, which is fabricated by local oxidation nanolithography. Optical characterization has been performed on such SCQDs to study the fundamental and excited states. At the ground state different exciton complex transitions of about 500 μeV linewidth have been identified and the fine structure splitting of the neutral exciton has been determined (≈65 μeV). The observed electronic structure covers the demands of future quantum information technologies.…
The social entrepreneur: Analysis of social awareness
2015
Resumen Los emprendedores sociales están ganando cierto reconocimiento como uno de los agentes de cambio social más importantes. Aun así, poco se conoce sobre sus motivaciones y el proceso a través del cual sus ideas se conciben y desarrollan. En este trabajo se analiza el proceso de descubrimiento de oportunidades en el caso de los emprendedores sociales, partiendo de la teoría del descubrimiento y del concepto de alerta emprendedora que, en este caso, rebautizamos como alerta social. Para ello se estudia el papel de la formación y la experiencia previa del emprendedor, la cercanía a otros emprendedores y la cercanía al problema social como variables relacionadas con la alerta social. Dada…
A Top-Down Approach Based on the Circularity Potential to Increase the Use of Reclaimed Asphalt
2023
Resource depletion and climate change, amongst others, are increasingly worrying environmental challenges for which the road engineering sector is a major contributor. Globally, viable solutions that comply with the principles of circular economy (CE) are being investigated that can replace conventional asphalt mixtures in a post-fossil fuel society. The use of reclaimed asphalt (RA) is a widely used and well-established method to reduce the environmental and economic impacts of asphalt mixtures while increasing their circularity. However, RA’s market supply and demand have not yet been systematically analyzed and established. Moreover, the actual circularity potential and the opportu…
The genetic mechanism of fallness: St. Maximos the Confessor revisited
2022
Through a close reading of the two definitions of evil in the Introduction to Responses to Thalassios , this article points out a circular, cognitive-affective-somatic, genetic mechanism that St. Maximos the Confessor considers responsible for the initiation and transmission of the fallness as a human condition and the specific manifestation of it in the form of passions. It elucidates the first definition as mainly phenomenological, by identifying the circular mechanism and its behavioural expressions, and the second definition as more aetiological, by explaining why this mechanism emerges and reemerges with the fallen humanity despite its catastrophic results. Contribution: This article h…