Search results for " SCIENZA"
showing 10 items of 1301 documents
Socioeconomic determinants of persistence in poor subjective health
2012
This paper aims at contributing to the constantly growing literature on the dynamics of (self assessed) health. Using the eight waves of the Health and Retirement Study, targeting elderly Americans over the age of 50, we measure persistence in bad health using an index borrowed from the literature on persistent poverty. This new approach, which is totally non parametric in the way it defines the relationship (for each individual and along the time) among years of poor and not poor health, allows to catch some interesting links between the subjective health and several factors such as education, life styles and socioeconomic status that may have a long-lasting influence on an individual’s he…
MATERIALS AND ARTISTIC TECHNIQUES OF THE FLEMISH WOODEN ALTAR FROM DEPOSITS OF ABATELLIS PALACE MUSEUM (PALERMO, ITALY)
2022
In the frame of the restoration intervention on a 16th century wooden altar performed by the experts of the Gallery of Art for the Sicilian Region ‘Palazzo Abatellis’, a deep scientific investigation of the artwork has been made by a scientific team in order to individuate the constitutive materials and techniques. The outcomes from the multi-analytical analyses supported the scheduling and monitoring of the conservation treatments and revealed the pictorial materials and underdrawing techniques typical of the artistic production for this typology of work of art widespread between the 15th and 16th centuries in central and northern Europe.
Interaction problems between in-plane and out-plane plates by SBEM
2010
Ecocompositi MaterBi (R)/Farina di legno: ottimizzazione delle proprietà attraverso analisi statistica
2009
Recensione di La salute è un diritto. Giovanni Berlinguer e le riforme del 1978, a cura di Fabrizio Rufo, Ediesse - Futura, Roma 2020
2022
Book Review
Il G20 del 2021 e l'Italia: mantenere vivi i sogni?
2022
Italy’s presidency of the G20 defied the odds and resulted in costly commitments by the members on a range of issues: global health, climate change, a minimum global tax, and the crisis in Afghanistan. Italy’s prime minister, Mario Draghi, was certainly a factor. The global context was also important, with the new Biden administration in the US leading a group of countries seeking multilateral solutions to pressing international problems.
Compatibilization of Polylactide/Poly(ethylene 2,5-furanoate) (PLA/PEF) Blends for Sustainable and Bioderived Packaging.
2022
Despite the advantages of polylactide (PLA), its inadequate UV-shielding and gas-barrier properties undermine its wide application as a flexible packaging film for perishable items. These issues are addressed in this work by investigating the properties of melt-mixed, fully bioderived blends of polylactide (PLA) and poly(ethylene furanoate) (PEF), as a function of the PEF weight fraction (1–30 wt %) and the amount of the commercial compatibilizer/chain extender Joncryl ADR 4468 (J, 0.25–1 phr). J mitigates the immiscibility of the two polymer phases by decreasing and homogenizing the PEF domain size; for the blend containing 10 wt % of PEF, the PEF domain size drops from 0.67 &p…
Comparative Investigation on the Soil Burial Degradation Behaviour of Polymer Films for Agriculture before and after Photo-Oxidation
2020
Polymer films based on biodegradable polymers, polyethylene (PE) and modified PE with oxo-degradable additive were prepared by film blowing. Carbon black (1%) was added to all the films. Commercial biodegradable Ecovio®
Competition between chain scission and branching formation in the processing of high-density polyethylene: effect of processing parameters and of sta…
2009
Two samples of high-density polyethylene with different molecular weight were processed in a batch mixer and the rheological and structural properties were investigated. In particular, the effect of different processing parameters and the eventual presence of different stabilizers were evaluated. Actually, two reactions may occur during processing: branching/crosslinking or chain scission. The results indicate that when the processing conditions promote a scarce mobility of the macromolecular chains (lower temperatures, lower mixing speed, and higher molecular weight), branching is more favored than chain scission. On increasing the mobility of the chain (higher temperature, higher mixing s…
On the effectiveness of different additives and concentrations on the re-building of the molecular structure of degraded polyethylene
2006
Mechanical recycling is an easy and economic way to re-use plastic waste as secondary materials, but, in general, their properties are worse with respect to the reclaimed materials and the virgin polymer. The aim of this work was to study the effect of concentration and reaction kinetics of two additives, an ethylene-co-glycidyl methacrylate (Lotader) and a hydroxylamine derivative (CGX), in the re-building of a degraded polyethylene. CGX is a nitroxyl radical generator able to form branching in polyolefins while the epoxy groups of Lotader can react with the functional groups present in the recycled polyethylene. The results indicate that the CGX has a higher reaction rate than Lotader, pr…