Search results for " sperimentale"
showing 10 items of 935 documents
Il Transformative Learning nei futuri insegnanti di sostegno: un’indagine in laboratorio
2022
Il presente lavoro illustra gli esiti di un’indagine condotta con 2193 corsisti frequentanti i laboratori del VI ciclo del corso di specializzazione per le attività di sostegno didattico dell’Università degli Studi di Palermo svoltosi nell’A.A. 2021/2022. La finalità dell’indagine è stata quella di rilevare il grado di consapevolezza dei taciti assunti e delle aspettative, nonché di quelle degli altri e valutarne la rilevanza a fini interpretativi, dei futuri docenti di sostegno, nel processo laboratoriale che li ha coinvolti per 180 ore. La cornice teorica all’interno della quale si delinea l’indagine è quella del Transformative Learning (Mezirow, 2013), che riteniamo fondamentale per la c…
Tecniche innovative di fotoelasticità digitale in luce bianca
2010
Observation of the rare B(s)(0) + decay from the combined analysis of CMS and LHCb data.
2015
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported licence.-- et al.
Formare i futuri insegnanti all’ascolto e all’accoglienza
2022
869 studenti del Corso di Laurea Magistrale in Scienze della Formazione Primaria dell’Università degli Studi di Palermo sono stati coinvolti nella progettazione e nella realizzazione di percorsi didattici mirati, rivolti agli alunni “fragili” di 33 scuole palermitane. Complessivamente sono state erogate 60.000 ore in DAD di attività di recupero e di potenziamento dell’apprendimento degli alunni della scuola primaria di Palermo. Il progetto “Nessuno resta indietro” si pone in linea con i punti 4 e 5 della Nouvelle Charte in cui si dichiara la Scuola Nuova “deve favorire la collaborazione tra tutti i membri della comunità scolastica portando docenti e studenti a comprendere il valore della di…
Study of the response of phenol compounds exposed to gamma photons and neutrons for Electron Spin Resonance dosimetry
2014
Search for supersymmetry in events with photons, bottom quarks, and missing transverse momentum in proton-proton collisions at a centre-of-mass energ…
2013
A search has been performed for the experimental signature of an isolated photon with high transverse momentum, at least one jet identified as originating from a bottom quark, and high missing transverse momentum. Such a final state may originate from supersymmetric models with gauge-mediated supersymmetry breaking in events in which one of a pair of higgsino-like neutralinos decays into a photon and a gravitino while the other decays into a Higgs boson and a gravitino. The search is performed using the full dataset of 7 TeV proton–proton collisions recorded with the ATLAS detector at the LHC in 2011, corresponding to an integrated luminosity of 4.7 fb−1. A total of 7 candidate events are o…
Preliminary magnetic resonance relaxometric analysis of Fricke gel dosimeters produced with polyvinyl alcohol and glutaraldehyde
2017
This work describes the preliminary analysis of Fricke gels dosimeters characterized by a new formulation making use of a matrix of polyvinyl alcohol cross-linked by adding glutaraldehyde and analyzed by means of nuclear magnetic resonance relaxometry. In previous optical studies, these gels have shown promising dosimetric features in terms of photon sensitivity and low diffusion of ferric ions produced after irradiation. In this work, we used a portable nuclear magnetic resonance relaxometer to measure the relaxation times (which are important for dosimetric applications) of these gel materials. For this purpose, we performed a study for optimizing the acquisition parameters with a nuclear…
NUCLEAR MAGNETIC RESONANCE RELAXOMETRY AND IMAGING FOR DOSIMETRY WITH AGAROSE FRICKE GEL
2016
Introduction: Fricke Xylenol Gel (FXG) dosimetric system is based on the radiation induced oxidation of ferrous to ferric ions. In this kind of gels it can occur that ferrous and ferric ions diffuse in the gel matrix. To preserve the spatial distribution of the dose from diffusion, Fricke gels must be undergoing measurement within a few hours of their irradiation. Thus, the spatial integrity of the dose distribution in the Fricke gel is maintained. The oxidation of ferrous ions also causes a reduction of the longitudinal nuclear magnetic relaxation time which can be measured by means of nuclear magnetic resonance (NMR) instrumentation. In this work we performed NMR relaxometry and MR imagin…
Near-Infrared-Responsive Choline-Calix[4]arene-Gold Nanostructures for Potential Photothermal Cancer Treatment
2022
The development of novel chemical approaches for the fabrication of gold nanostructures with localized surface plasmon resonance (LSPR) falling in the near-infrared (NIR) region is one challenging topic in nanomaterials science. Due to their optical and photothermal properties triggered by light excitation in the therapeutic window (λmax = 650-1300 nm), gold-based nanostructures are appealing candidates in anticancer nanomedicine. Here, we report a novel method to prepare water-dispersible gold nanostructures with NIR-LSPR (λmax = 600-1000 nm) properties. The gold nanostructures were achieved in a single step by an unconventional method using NADH as a reducing agent and an amphiphilic chol…
Graphene oxide and Fumed silica graphene oxide nanocomposites modification by thermal treatments
2014
In the present study we investigate post synthesis thermal treatments up to 400 °C of graphene oxide (GrO) prepared from commercial graphite and of GrO–silica nanocomposites prepared by a solution of commercial Fumed silica nanoparticles (average diameter 7 nm or 40 nm) and the GrO. The thermal treatments were carried out in air, vacuum or He atmosphere to highlight tunable changes. Two GrO batches with small differences in the D (~1350 cm–1) and G (~1580 cm–1) Raman bands have been employed to evaluate effects depending on preparation. Thermal effects have been monitored through the Raman spectroscopy focusing on D, G and 2D (2500–3500 cm–1) bands spectral ranges. The experiments evidenced…