Search results for " SCIENZA"
showing 10 items of 1301 documents
Surface Treatment and nanofiller effect on the polymeric nanocomposites
2008
The 2021 G20 and Italy: keeping our dreams alive?
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. How can we explain this success? Italy’s prime minister, Mario Draghi, and his extensive prior experience and widespread respect 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.
Introduzione
2020
Introduzione al volume "Un'infanzia fatta di scienza e arte" Introduction to the book "Un'infanzia fatta di scienza e arte"
Probabilistic Evaluation of the Adaptation Time for Structures under Seismic Loads
2016
Abstract In this paper, a probabilistic approach for the evaluation of the adaptation time for elastic perfectly plastic frames is proposed. The considered load history acting on the structure is defined as a suitable combination of quasi-statical loads and seismic actions. The proposed approach utilizes the Monte Carlo method in order to generate a suitable large number of seismic acceleration histories and for each one the related load combination is defined. Furthermore, for each load combination the related adaptation time is determined, if any, as the optimal one for which the structure is able to shakedown under the unamplified applied actions. A known generalized Ceradini's theorem i…
Reactive Compatibilization of PBT/EVA Blends with an Ethylene-Acrylic Acid Copolymer and a Low Molar Mass Bis-Oxazoline
2004
Polyesters and polyolefins form highly incompatible blends with poor properties and gross morphology that hinder any practical applications. In this work, the possibility to compatibilize an incompatible blend of poly(butylene terephthalate) (PBT) with ethylene vinyl acetate (EVA) by adding a bis-oxazoline compound, 2,2'-(1,3-phenylene)-bis(2-oxazoline) (PBO), and an ethylene acrylic acid copolymer (EAA) as compatibilizer precursors has been studied. The results indicate that the binary uncompatibilized blends show poor mechanical properties and a bad morphology with scarce adhesion between the phases. The situation is only slightly improved when the EAA is added while the best performance …
On the modification of the nitrile groups of acrylonitrile/butadiene/styrene into oxazoline in the melt
2000
Oxazoline functionality is well known to be highly reactive toward a lot of other functional groups like carboxyls, hydroxyls, mercaptans, and amines. In this work we report the possibility to modify the nitrile groups of an acrylonitrile/butadiene/styrene (ABS) copolymer into oxazoline in the molten state in the presence of aminoethanol as modifier agent and zinc acetate as a catalyst. The reaction has been carried out in a batch mixer and in a corotating twin screw extruder. The conversion of the nitrile groups into oxazoline has been verified by infrared spectroscopy, NMR analysis microanalysis and confirmed by thermomechanical characterization. The results indicate that the kinetic of g…
An Integrated Theory for the Accumulation of Mentally Ill Offenders and the Effect of Realignment in California
2018
High mental illness prevalence in California state prisons has drawn much attention of scholars and policymakers in the past three decades. Various studies suggest that the mental illness prevalence in prison has increased from 0.14 to 0.3 from 1987 to 2014. The problem with a high concentration of mentally ill prisoners culminated when the California Department of Corrections and Rehabilitation (CDCR) was sued for the violation of inmates’ rights under the Eighth Amendment in the early 1990s. Consequently, CDCR’s health care was placed under Federal receivership to reform prison health care. Receivership is an uncommon remedy adopts by a federal court when other court orders have failed to…
Il sistema delle regole e la scienza dell'architettura
2011
Il testo risponde a domande poste dalla redazione: il ruolo dell'architettura italiana nel contesto internazionale; il ruolo dell'architettura di fronte al degrado urbano e del territorio; la crisi delle discipline del progetto in relazione alla spettacolarizzazione della cultura; il rapporto tra professione e insegnamento. La risposta parte dal ruolo della teoria nel progetto, dalla scientificità dell'architettura