125 research outputs found
Immigrazione e territorio in Abruzzo/Immigration and territory in the Abruzzo region
No full textIl saggio, dopo una breve introduzione che richiama il tema della presenza straniera in Italia, affronta il caso dell’Abruzzo che è passato recentemente da terra di emigranti a regione di immigrazione. Inserito nel contesto geografico centro-orientale della penisola, il fenomeno migratorio rientra qui nel modello d’insediamento a prevalenza balcanica. I primi due gruppi nazionali, albanesi e macedoni, sono concentrati in gran parte nelle aree montane interne e occupati nel settore della pastorizia. Vi è poi una significativa incidenza dei nordafricani e una consistente comunità di senegalesi, dediti soprattutto al commercio ambulante e distribuiti principalmente sul litorale adriatico. Il mondo del lavoro, le necessità abitative, la distribuzione territoriale delle presenze, le dinamiche dell’illegalità e dell’integrazione, il ruolo della società civile e delle istituzioni segnalano l’esistenza di processi trasformativi in una regione in cui un’immigrazione mediamente giovane, ancora quantitativamente modesta e a carattere prevalentemente familiare, tende a divenire sempre più stabile e numerosa.After a brief introduction referring to foreign presence in Italy, this essay deals with the case of Abruzzo, which has recently moved from being a land of migration to a land of immigration. Placed in the central-eastern geographical context of the Italian peninsula, the migration phenomenon is here prevalently of Balkan character. The two prevalent ethnic groups, Albanians and Macedonians, concentrate mainly in the mountain area of the interior and their main activity is as shepherds. There is also a noticeable presence of Northern Africans and a numerous community of Senegalese, mainly engaged in itinerant trade and mainly settled along the Adriatic coast. The world of labour, their needs of habitation, their distribution over the territory, their position respect to illegality and integration, the role of civil society and institutions show the presence of transformation processes in a region in which immigration of a young population on average, still quantitatively moderate and of mainly family character, tends to become increasingly stable and numerous
Patent ductus arteriosus in preterm infants born before 30 weeks’ gestation: high rate of spontaneous closure after hospital discharge
No full textAim: The aim of this study was to determine the spontaneous closure rate of patent ductus arteriosus at a 2-year follow-up, following failed medical therapy and beyond initial hospital discharge, and to evaluate in-hospital spontaneous or pharmacological closure rates. Materials and methods: A retrospective evaluation was conducted in a cohort of preterm infants admitted to the Neonatal ICU of Ancona between January, 2004 and June, 2013. Inclusion criteria were gestational age between 24+0 and 29+6 weeks or birth weight 1.5 mm, a left atrium-to-aorta ratio >1.4, and/or reversal of end-diastolic flow in the aorta >30% of the anterograde. First-line treatment was intravenous ibuprofen. Intravenous indomethacin was used if ibuprofen failed. Surgical ligation was considered in haemodynamically significant patent ductus arteriosus after medical treatment. Results: A total of 593 infants met the inclusion criteria, and patent ductus arteriosus was diagnosed in 317 (53.4%). Among them, 283 (89.3%) infants had haemodynamically significant patent ductus arteriosus, with pharmacological closure achieved in 228 (80.6%) infants and surgical ligation performed in 20 (7.1%). Follow-up at 24 months was available for 39 (81.3%) of 48 infants with patent ductus arteriosus at the hospital discharge: 36 (92.3%) underwent spontaneous closure, two (5.1%) underwent surgical ligation, and one (2.6%) had a patent ductus arteriosus. Discussion: A significant number of patent ductus arteriosus that fail pharmacological closure undergo spontaneous closure by the age of 2 years. This information should be taken into account when considering surgery or additional attempts of pharmacological closure
Understanding the effects of tunneling on buildings by analyzing DInSAR data: The case of the new subway in Rome, Italy
No full textMonitoring the displacements of the buildings during the execution of underground works is a very demanding activity in large urban areas contexts, due to the number of structures involved and to the duration of the measurements throughout the realization time. Therefore, the surface deformation detection cannot be based on direct measurements using ground-based sensors, only, and should include technologies that allow a systematic and comprehensive monitoring. The satellite DInSAR technique (Differential Interferometry Synthetic Aperture Radar) provides displacement time series of a large number of measuring points, which can be associated with different portions of a building and are able to reveal differential settlements. Furthermore, the availability of SAR data archived since 1992 allows performing back analyses to evaluate also long-term settlement processes not directly linked to the tunneling works. More recently, the COSMO-SkyMed constellation, developed by the Italian Space Agency (ASI), has provided data at higher space/time resolution, which have been profitably used to detect and follow the evolution of the settlements caused by tunneling excavation works, as in the case of the new metro line in Rome. By applying the advanced DInSAR methodology, we have estimated average rates of displacement for a number of buildings over the Metro C track interested by the subsidence, very likely triggered by tunneling. A classification-based approach was applied by taking into account the displacement rates and the associated statistical error parameters. This provided a tool for the direct identification of the most critical buildings that need further investigations
Introduzione
No full textSi evidenziano i dinamismi, nel mondo contemporaneo avanzato, di espressioni tradizionali e popolari che erano state considerate disgregate o in via di disgregazione da oltre un secolo
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