Adattabilità antropica ed evoluzione dei sistemi fluviali nell’area del delta padano meridionale tra la tarda Età romana e l’inizio del Medioevo

Despite several studies have already focused on the palaeogeographical reconstruction of the Po Delta, many questions remain unanswered. Indeed it is not easy to locate on the ground the few data known from ancient sources, while medieval and modern alluvial transformations hide previous landforms and fluvial traces. Starting from a reanalysis of existing palaeogeographical reconstructions and known archaeological data from the southern Delta, it was possible to frame the new geoarchaeological data collected north of Ravenna. Interpreting the different geological layers identified in coring PCR02, carried out near the archaeological site of Butrium, it was possible to reconstruct landscape changes at the local level and hypothesize ones occurred at a broader scale. Especially for the latter, this was possible thanks to XFR analysis on targeted samples and 14C dating of the change from lagoonal to marshy environment recognized in the core. Contextualizing these data with historical, archaeological and geological knowledge, it was possible to suggest a phase of coastline progradation that must have happened within the 2nd or 3rd century AD. This change may be linked to a new southern branch of the Po river, possibly flowing not so far from Ravenna, but that only future investigation may be able to ma

Adattabilità antropica ed evoluzione dei sistemi fluviali nell’area del delta padano meridionale tra la tarda Età romana e l’inizio del Medioevo

Despite several studies have already focused on the palaeogeographical reconstruction of the Po Delta, many questions remain unanswered. Indeed it is not easy to locate on the ground the few data known from ancient sources, while medieval and modern alluvial transformations hide previous landforms and fluvial traces. Starting from a reanalysis of existing palaeogeographical reconstructions and known archaeological data from the southern Delta, it was possible to frame the new geoarchaeological data collected north of Ravenna. Interpreting the different geological layers identified in coring PCR02, carried out near the archaeological site of Butrium, it was possible to reconstruct landscape changes at the local level and hypothesize ones occurred at a broader scale. Especially for the latter, this was possible thanks to XFR analysis on targeted samples and 14C dating of the change from lagoonal to marshy environment recognized in the core. Contextualizing these data with historical, archaeological and geological knowledge, it was possible to suggest a phase of coastline progradation that must have happened within the 2nd or 3rd century AD. This change may be linked to a new southern branch of the Po river, possibly flowing not so far from Ravenna, but that only future investigation may be able to ma

THE ADA (AGE-D-DIMER-ALBUMIN) SCORE TO PREDICT THROMBOSIS IN SARS-CoV-2

Background: Severe acute respiratory syndrome coronavirus-2 (SARS-CoV2)-related pneumonia is associated with venous and arterial thrombosis . Aim of the study was to find-out a new score for predicting thrombosis in patients with SARS-CoV-2. Methods: We included a cohort of 674 patients affected by SARS-CoV-2, not requiring intensive care units, and followed-up during the hospitalization until discharge. Routinary analyses performed at in-hospital admission included also serum albumin and D-dimer while arterial and venous thromboses were the end-points of the study. Results: During the follow-up thrombotic events 110 were registered; patients with thrombotic events were older and had lower albumin and higher D-dimer, compared to thrombotic event-free ones. On multivariable logistic regression with step by stepwise procedure age, serum albumin, D-dimer, were independently associated with thrombotic events. The linear combination of age, D-dimer, albumin allowed to build-up the ADA score, whose AUC was 0.752 (95% CI, 0.708-0.795). ADA score was internally validated by bootstrap sampling procedure giving an AUC of 0.752 (95% CI: 0.708 - 0.794). Conclusions: Combination of age, D-dimer, albumin in the ADA score allows identifying SARS-CoV-2 patients at higher risk of thrombotic events