Search results for "SUN"
showing 10 items of 935 documents
L'elemento acqua nella tradizione islamica
2014
Questo intervento tocca l'argomento elemento acqua così come viene mostrato dalle principali fonti della tradizione islamica: il Corano e la sunna del profeta Muhammad. Dall'acqua passa l'abluzione, sia quella denominata maggiore sia la minore, anche se bisogna considerare che ogni vera purità passa dalla purificazione del cuore. Anche la Sunna cita ripetutamente l'acqua nelle narrazioni relative ad episodi della vita di Muhammad e nei suoi detti. Si constata anche come l'acqua sia oggetto di avvenimenti prodigiosi, mentre nello stesso tempo, varie raccomandazioni ed avvertimenti ruotano nel suo utilizzo.
Tsunami and risk prevention. An Italian case study
2021
The brief paper intends to describe the main contents of the National Emergency Plan for volcanic events of national importance on the island of Stromboli (ME) prepared in 2015 by the Department for the Civil Protection (DPC). The volcanic island of Stromboli is in fact largely exposed to the risk associated with the activities of the volcano of the same name, especially that of the tsunami. The effusive activity of the Stromboli in fact causes a marked instability of the slope known as Sciara del Fuoco which can induce, as happened at the end of 2002, a tsunami. The contribution, starting from a descriptive interest, therefore aims to present, problematizing them, the intervention policies…
I tumori stromali gastrointestinali: dalla biologia alla clinica
2014
Isolamento di cellule staminali provenienti dal dotto di Wirsung del maiale e differenziazione in vitro in cellule beta simili
2008
Introduzione: Lo scopo di questo studio è quello di ottenere un protocollo per l’isolamento e la coltura in vitro di cellule staminali provenienti dal dotto di wirsung del maiale ed osservare la potenzialità di tali cellule nel differenziarsi in cellule β-simili producenti insulina. Materiali e metodi: Il dotto di wirsung è stato isolato attraverso microdissezione chirurgica dopo prelievo del blocco duodeno-pancreas di maiale mediante perfusione in situ prelievo e successivamente digerito prima con 1 mg/ml di collagenasi P e poi con 2mg/ml di tripsina per ottenere cellule staminali duttali, le quali successivamente sono state poste in coltura (serum-free) con DMEM senza glucosio con l’aggiu…
A new bipartite matching approach for record linkage: the case of two big Italian databases
2022
In recent years, university student mobility in Italy has worsened the north-south economic divide. Therefore, studying this phenomenon and its determinants is necessary to provide helpful information to support socio-economic policies. Thus, this paper aims at integrating two big databases about university students in Italy: the first one is provided by the Ministry of University and Research, concerning the university careers of student cohorts; the second one is provided by the AlmaLaurea consortium, concerning the university experiences of graduates and their success in the labour market. Both databases contain socio-demographic information that complements each other. The proposed meth…
Tra mafia, politica e “discorsi di legalità”
2015
Starting from a synthetic review of the studies about the importance of symbolic dimension for the construction of Cosa Nostra’s power (from the area of knowledge to the one of identity, from rituals to myths and apologetics), the paper analyses the ambiguity of the talk-interactions between “men of honour” during the development of conversational grounding for their inter-subjectivity (in Schegloff‘s words). According to the rules, spoken exchanges between Cosa Nostra’s members should be governed by the twofold restriction of the law of silence toward the world outside and the obligation of speaking the truth inside the organization. But in real life, things are different. Mafia’s language…
Active tectonics, sedimentation history and geomorphological features in the northern Sicily continental margin: implications for the marine geohazar…
2020
Starting from the assumption that seismic events in the active margins are accompanied by evidence of a depositional, geomorphologic and structural type, which constitutes the geological record of their activity, we analysed different features of the Northern Sicily continental margin (NSCM) to reconstruct the deformational field and related stress field in the Southern Tyrrhenian sea. As an outcome of this project we were going to obtain seismotectonic setting and mapping to provide a powerful tool in managing and assessing the marine geological hazards. The study area extends from the San Vito Peninsula to the Termini Gulf along the NSCM, including the Ustica island, and is located in a t…
Novel silicon microparticles to improve sunlight stability of raw polypropylene
2015
Oxidation of polyolefins by ultraviolet/visible irradiation is a significant limitation for their use in several technological applications. The use of high-tech additives such as silicon microparticles becomes a compositing strategy that can improve the performance of these materials at long-term service conditions. Silicon particles were added to non-additivated raw polypropylene (PP) prepared by hot melt extrusion and subjected to accelerated sunlight irradiation tests. The stability of thermal properties, mechanical performance and thermal decomposition behaviour of composites was evaluated by differential scanning calorimetry, dynamic mechanical thermal analysis and thermogravimetry. T…
Fiat lux: the light became therapy. An overview on the Bright Light Therapy in Alzheimer’s Disease sleep disorders
2020
Background: A system of photosensitive retinal ganglion cells provides ‘non-visual’ information on the circadian sequences of light to the suprachiasmatic nucleus (SCN), which, as the ‘master clock’, synchronizes the chronobiological mechanisms of all the biological clocks. Damage to SCN structure alters circadian behavioral and hormonal rhythms and interferes with a regular sleep-wake pattern. Several studies have shown that, in aging and in Alzheimer’s disease (AD), circadian rhythms change their synchronization with the environment and behavior loses sync with light. Objective: The current overview aims to examine research studies showing the effect of bright light therapy (BLT) on sleep…
Aberrant methylation of tRNAs links cellular stress to neuro-developmental disorders.
2014
Mutations in the cytosine-5 RNA methyltransferase NSun2 cause microcephaly and other neurological abnormalities in mice and human. How post-transcriptional methylation contributes to the human disease is currently unknown. By comparing gene expression data with global cytosine-5 RNA methylomes in patient fibroblasts and NSun2-deficient mice, we find that loss of cytosine-5 RNA methylation increases the angiogenin-mediated endonucleolytic cleavage of transfer RNAs (tRNA) leading to an accumulation of 5' tRNA-derived small RNA fragments. Accumulation of 5' tRNA fragments in the absence of NSun2 reduces protein translation rates and activates stress pathways leading to reduced cell siz…