11 research outputs found

    Scattering of Line-Ring Vortices in a Superfluid

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    We study the scattering of vortex rings by a superfluid line vortex using the Gross-Pitaevskii equation in a parameter regime where a hydrodynamic description based on a vortex filament approximation is applicable. By using a vortex extraction algorithm, we are able to track the location of the vortex ring as a function of time. Using this, we show that the scattering of the vortex ring in our Gross-Pitaevskii simulations is well captured by the local induction approximation of a vortex filament model for a wide range of impact parameters. The scattering of a vortex ring by a line vortex is characterised by the initial offset of the centre of the ring from the axis of the vortex. We find that a strong asymmetry exists in the scattering of a ring as a function of this initial scattering parameter

    Fattibilità economico finanziaria di un’operazione di bonifica in regime di partnership pubblico-privato

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    Definizione di un metodo di gestione e finanziamento del processo di bonifica ambientale di otto aree territoriali italiane e studio di fattibilit

    Red cells distribution width after cardiac arrest

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    SCOPUS: no.jinfo:eu-repo/semantics/publishe

    Assessment of early lymphopenia after cardiac arrest

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    SCOPUS: no.jinfo:eu-repo/semantics/publishe

    Can red blood cell distribution width predict outcome after cardiac arrest?

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    BACKGROUND: In critically ill patients, high red blood cell distribution width (RDW) values have been associated with increased hospital mortality, but there are no data on the impact of RDW on outcomes of patients resuscitated from cardiac arrest (CA). The aim of this study was to investigate the relationship between RDW and long-term neurologic outcome in CA survivors. METHODS: We performed a retrospective analysis of an institutional database including all unconscious adult patients admitted to the intensive care unit (ICU) after non-traumatic CA between January 2007 and January 2015. Patients who survived <24 hours were excluded. The RDW (normal values 10.9-13.4%) was obtained daily from the day of admission to day 3. Patients with a cerebral performance category (CPC) score of 3-5 at 3 months were considered to have an unfavorable neurological outcome. RESULTS: Three hundred and ninety patients were included. The ICU mortality rate was 56% (n=220) and 64% of patients (n=251) had an unfavourable 3-month neurological outcome. The median RDW on the day of admission was 14 [13.0-15.2]% and remained stable over the observation period. Two hundred and forty-five patients (63%) had a high RDW (>13.4%) on admission. In multivariable logistic regression analysis, older age, absence of bystander cardiopulmonary resuscitation (CPR), a non-cardiac aetiology of the arrest, a non-shockable initial rhythm, high adrenaline dose during CPR and high admission RDW levels were independently associated with an unfavourable outcome at 3 months. CONCLUSIONS: High RDW values are associated with poor neurological outcome among CA survivors
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