Search results for " tecnologia."
showing 10 items of 1339 documents
Commento al volume D’Agostino S., Giuliani Cairoli F., Conforto M. L., Guidoboni E., 2009, Raccomandazioni per la redazione di progetti e l’esecuzion…
2010
Il commento sottolinea la necessità di approfondire il tema della manutenzione del costruito archeologico, a partire dall'individuazione di categorie di intervento adeguate alla specificità e con riferimento alla dimensione complessa dei siti , dove il costruito archeologico è immerso nel contesto naturale e comprende aggiunte e integrazioni di varia natura.
La conoscenza per la gestione dell'edilizia scolastica del Comune di Palermo
2008
University–industry partnerships for the provision of R&D services
2015
Technology Transfer Offices (TTOs) are the main institutions responsible for the establishment of university–industry partnerships. R&D contracts exemplify the indirect mechanisms through which enterprises and universities collaborate on a win–win basis. This study addresses organizational and institutional aspects that act as drivers for the establishment of successful university–industry partnerships. First, a series of regression models explain the determinants of R&D contracts. These models include two main dimensions: the university and the technology transfer office. Second, further analysis empirically explores whether universities in regions with a favorable environment enjoy greate…
Can a magic recipe foster university spin-off creation?
2015
This study examines factors that explain the creation of university spin-offs. The study focuses on mechanisms that technology transfer offices (TTOs) and universities employ to foster spin-offs. These mechanisms include technology transfer activities that support spin-offs, normative frameworks, support infrastructures (i.e., business incubators and science parks), and TTO staff's specialist technical skills. The analysis also differentiates between public and private universities. Spin-offs belong to one or more of the following groups: spin-offs with support from the university's TTO, spin-offs operating under a license agreement, and spin-offs in which the TTO or university holds equity…
Physical properties of green composites based on poly-lactic acid or Mater-Bi® filled with Posidonia Oceanica leaves
2018
Abstract This work focuses on the evaluation of Posidonia Oceanica leaves as effective reinforcing agent for ecofriendly, fully biodegradable polymer composites. Posidonia leaves were washed, ground and sieved in order to achieve two different size distributions and aspect ratios. They were then added to either a stiff or a ductile biodegradable polymer matrix, respectively poly-lactic acid (PLA) and MaterBi® (MB), at two different filler contents (10 wt% and 20 wt%). The materials were fully characterized from a spectroscopic, morphological, rheological, and mechanical point of view. In particular, the outcomes of tensile tests were statistically analyzed by using a Full Factorial Design i…
A possible tool for the choice of building materials: the environmental product declaration (EPD)
2019
The paper, contribution to the international debate on the environmental matter, deals with a tool that can guide professionals and the users in choosing low environmental impact building materials with similar functional requirements, the Environmental Product Declaration (EPD) or Type III Environmental Label, by highlighting strengths and limitations. The paper, besides describing the characteristics and contents of the EPDs and Product Category Rules (PCR), lists the main European EPD Programmes, analyzing two EPDs models in order to verify the comparability of the listed LCA data.
L'Architettura è resiliente?
2022
Il contributo indaga specificatamente sul termine "Resilienza" ormai inflazionato a più usi e livelli . In vero ci si domanda come e quando l'architettura possa esser resiliente giacché appare non esserlo : "una architettura rotta, rotta è, e rotta rimane" senza possibilità di azioni che in autonomia la rigenerino. L’atto del costruire deve essere sempre atto nobile ma soprattutto responsabile, usando e scegliendo tecniche e tecnologie ‘adattive’ che pongano soluzioni sostenibili lontane dagli esercizi di stile in cui l’Architettura spesso si diletta (Lerner, 2012). Un positivo contributo alla ricerca della resilienza in Architettura potrebbe essere individuato forse nei materiali che la co…
ARCHITETTURA SISTEMICA. Materiali ed Elementi Costruttivi (II EDIZIONE AGGIORNATA)
2009
L’architettura è un’arte e l’opera architettonica, in senso figurato, è un organismo, un’entità strutturata in corrispondenza di esigenze tecniche e funzionali specifiche. Inoltre l’opera architettonica è un organismo complesso, in quanto quella entità strutturata che la rappresenta è di non facile comprensione, od anche l’entità strutturata che si vuole progettare e costruire non solo è di difficile ideazione, ma anche funziona in modo complicato. Per architettura sistemica s’intende un complesso ordinato in cui tutte le parti dell’opera architettonica hanno una relazione e una dipendenza reciproca; sotto l’aspetto oggettivo un sistema è la totalità delle cose ordinate in modo da costituir…
Thiophene pyrenyl derivatives for the supramolecular processability of single-walled carbon nanotubes in thin film heterojunction
2017
Abstract A major problem for the use of single-wall carbon nanotubes (SWCNTs) in electronic devices relates to their poor processability. Chemical modification inevitably introduces defects in the nanotube lattice, resulting in a loss of electronic properties. In this contest, we report on a supramolecular approach with the aim of increasing the dispersion of SWCNTs in solution and in organic semiconductor matrices by ensuring the optoelectronic properties. In particular, new pyrenyl derivatives of thiophene have been synthesized and used to improve the solubility of SWCNTs for electron transfer in thin film heterojunction with poly(3-hexylthiophene) (P3HT) as donor system. Photoinduced ele…
Structural performances of pultruded GFRP emergency structures – Part 1: Experimental characterization of materials and substructure
2019
Abstract This paper presents an experimental study in the field of structures made of pultruded fiber reinforced polymers (FRP) elements to be used for emergency purposes. A preliminary design of a 3D pultruded glass fiber reinforced polymer structure is presented with the mechanical characterization of the constituting elements. The axial and flexural properties of laminate and I-shaped GRFP profiles are discussed considering the short term creep. In a companion paper, the benefits, the limits and the reliability of the structure analyzed for emergency applications are discussed. In details, the numerical structural analysis of the full-scale 3D model is described followed by the experimen…