Le sfumature del lusso a Bedriacum. Note su alcuni vetri preziosi di prima età imperiale dal Quartiere degli Artigiani

Questo articolo prende in considerazione alcuni reperti in vetro di notevole pregio, provenienti dal vicus romano di Bedriacum (attuale Calvatone, CR), scoperti durante le campagne di scavo svoltesi tra 2005 e 2013 nell’area del Quartiere degli Artigiani (scavi diretti dalla prof. Maria Teresa Grassi, Università degli Studi di Milano). I reperti analizzati si collocano cronologicamente tra la fine del I sec. a.C. e il pieno I sec. d.C., periodo che corrispose a una particolare fioritura del vicus stesso. Si è deciso pertanto di focalizzare l’attenzione su alcuni preziosi reperti ottenuti con la tecnica del vetro mosaico, della colatura e modellazione su forma capovolta (una coppa tipo Is.20, un unicum finora a Bedriacum, un fr. di coppa tipo Is.1/18 e due coppe costolate tipo Is.3), della soffiatura entro stampo (due frr. di coppe ispirate alla produzione di Ennione e un fr. di bicchiere troncoconico tipo Is.31) e tramite soffiatura libera (coppette costolate tipo Is.17 e frr. decorati a macchie).This article considers some remarkably valuable glass finds from the roman site of Bedriacum (now Calvatone, CR), discovered during the 2005-2013 excavations in the “Quartiere degli artigiani” area (directed by professor Maria Teresa Grassi, Università degli Studi of Milan). These finds are dated between the end of the I century BC and the I century AD, a period in which the vicus was particularly prosperous. The focus will be on mosaic glass finds, cast monochrome glass (a cup type Is.20, the first evidence of this type of glass from Bedriacum, a linear cut bowl type Is.1/18 and two ribbed bowls type Is.3), mold-blown glass (two fragments of cups inspired by the Ennion production, a truncated conical beaker type Is.31) and free blown glass vessels (two ribbed bowls type Is.17 and some fragments with blobbed decoration)

Palatal skeletal anchorage: multiple applications with a single appliance

Using a single bone-borne maxillary appliance with twofold mechanics, that is, rapid palatal expander and nonfrictional distalizing appliance (Pendulum) is a valuable option to treat young-adult patients with poor compliance. In this particular case, the same appliance was used to disinclude 2.3, eliminating reaction forces on the arch. Therefore, the first expansive phase was followed by the distalizing phase. After enough space was obtained for the recovery of tooth 2.3, a triple-looped titanium-molybdenum alloy (TMA) spring was used to perform canine orthodontic traction. The core concept is that digital planning and optimal positioning of two palatal mini-screws can ensure a bicortical anchorage which, in turn, enabled to tolerate the different orthodontic phases. As a matter of fact, a tooth-bone-borne anchorage was followed by a pure bone-borne anchorage with no lost of stability

Levodopa-Induced Dyskinesias and Dyskinesias-Reduced-Self-Awareness in Parkinson’s Disease: A Neurocognitive Approach

Levodopa-induced dyskinesias are one of the most common disabling motor complications in advanced Parkinson’s disease. The subjective perception of motor impairment is a clinical phenomenon that needs to be adequately analyzed. Indeed, the determination of patient dyskinesias-reduced-self-awareness (DRSA) and of its relationship to daily dysfunction is an important aspect of the debate on the gold standard for treatment. As the association with executive dysfunction is a matter of debate and we hypothesize it plays an important role in DRSA, we analyzed metacognitive abilities related to action monitoring and other factors, such as response-inhibition and “Theory of Mind,” which represent a novel explanation of the phenomenon. Moreover, we investigated whether and how a dysfunction in action monitoring related to the cingulo-frontal-ventral striatal circuit would be associated with DRSA using an event-related Go-NoGo fMRI experiment. Our findings suggest the presence of executive dysfunctions in DRSA pathogenesis, with a key leading role played by the cingulo-frontal network as part of a functionally impaired response-inhibition network

The role of stellar expansion on the formation of gravitational wave sources

Massive stars are the progenitors of black holes and neutron stars, the mergers of which can be detected with gravitational waves (GW). The expansion of massive stars is one of the key factors affecting their evolution in close binary systems, but it remains subject to large uncertainties in stellar astrophysics. For population studies and predictions of GW sources, the stellar expansion is often simulated with the analytic formulae from Hurley et al. (2000). These formulae need to be extrapolated for stars beyond 50 solar masses and are often considered outdated. In this work we present five different prescriptions developed from 1D stellar models to constrain the maximum expansion of massive stars. We adopt these prescriptions to investigate how stellar expansion affects mass transfer interactions and in turn the formation of GW sources. We show that limiting radial expansion with updated 1D stellar models, when compared to the use of Hurley et al. (2000) radial expansion formulae, does not significantly affect GW source properties (rates and masses). This is because most mass transfer events leading to GW sources are initialised before the donor star reaches its maximum expansion. The only significant difference was found for the mass distribution of massive binary black hole mergers (total mass > 50 solar masses) formed from stars that may evolve beyond the Humphreys-Davidson limit, whose radial expansion is the most uncertain. We conclude that understanding the expansion of massive stars and the origin of the Humphrey-Davidson limit is a key factor for the study of GW sources.Comment: Accepted for publication in MNRA