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    ABSTRACT: Urban and peri-urban areas are increasingly called to face with the problem of an increased frequency of flooding events. One of the major issue is the evolving climate conditions. The current paper aims to investigate the temporal changes occurring in extreme rainfall within the Solofrana river basin (Southern Italy), is an about 200 Km2 peri-urban catchment, where flooding and landslides events occurred rather frequently, especially during the last years. Five rain-gauge stations data sub-hourly, hourly and daily rainfall data have been tested for temporal trend detection. Rainfall heights, compared to maximum annual average for different duration, increase on average of about 5-10% (on a ten year base) and, for a particular rain gauge station, up to 40%. The trends appear however significant only for two of the rain gauges, in particular for the two station located on the main relief of the investigated watershed.
    Full-text · Article · Dec 2015 · Procedia Engineering
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    ABSTRACT: The current paper aims to investigate the risk of occurrence of damaging events, as a function of rainfall triggering event types, for the Solofrana peri-urban basin, where MDHEs has occurred rather frequently, especially during the last decade. A number of about 25 MDHE, within the period 1951-2014, have been selected and analyzed for the purpose. Cumulate rainfall, duration extent, maximum intensity, return periods, temporal occurrences and spatial patterns have been analyzed for purposes of classification. Rainfall occurrences appeared effectively severe in only few cases and perhaps the large number of damaging event, and the relative increase in the last decade, is most likely caused by incorrect planning policies.
    Full-text · Article · Dec 2015 · Procedia Engineering
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    ABSTRACT: The synthesis of styrene–isoprene and styrene–1,3-pentadiene binary copolymers promoted by the titanium complexes dichloro{1,4-dithiabutanediyl-2,2′-bis(4,6-di-tert-butylphenoxy)}titanium (1) and dichloro{1,4-dithiabutanediyl-2,2′-bis[4,6-bis(2-phenyl-2-propyl)phenoxy]}titanium (2) activated by methylaluminoxane (MAO) is reported. Both copolymers were obtained in a wide range of compositions and the molecular weight distributions obtained from GPC analysis of the copolymers are coherent with the material being copolymeric in nature. DSC analysis shows an increase of Tg by increasing the amount of styrene in the copolymers, for both binary copolymers. Furthermore, 13C NMR analysis of the copolymer microstructure allowed the assessment of the monomer block lengths and distribution in the polymer chain revealing a random distribution with the catalyst 1 and 2 for both binary copolymers and a low tendency to form long styrene homosequences. Intriguingly, both in styrene–isoprene and in styrene–1,3-pentadiene copolymers, the catalyst 2 produces polymers with higher vinyl (3,4 for isoprene and 1,2 for 1,3-pentadiene) content with respect to catalyst 1 giving interesting insights about the mechanism of stereocontrol for this class of catalysts.
    No preview · Article · Jul 2015 · RSC Advances

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  • Address
    via Giovanni Paolo II, 132, 84084, Fisciano, Campania, Italy
  • Head of Institution
    Aurelio Tommasetti
  • Website
    http://www.unisa.it/
  • Phone
    +39 089 961111
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Top publications last week by reads

 
The Lancet 01/2016; DOI:10.1016/S0140-6736(16)00143-4
237 Reads
 
British Medical Bulletin 01/2016; DOI:10.1093/bmb/ldv054
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