Search results for " Opera"
showing 10 items of 3606 documents
New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spalla…
2021
Abstract The violation of baryon number, B , is an essential ingredient for the preferential creation of matter over antimatter needed to account for the observed baryon asymmetry in the Universe. However, such a process has yet to be experimentally observed. The HIBEAM/NNBAR program is a proposed two-stage experiment at the European Spallation Source to search for baryon number violation. The program will include high-sensitivity searches for processes that violate baryon number by one or two units: free neutron–antineutron oscillation ( n → n ̄ ) via mixing, neutron–antineutron oscillation via regeneration from a sterile neutron state ( n → [ n ′ , n ̄ ′ ] → n ̄ ), and neutron disappearan…
Operatori penitenziari: richieste del cambiamento e profili organizzativi
2017
Il volume intende riflettere sul riassetto organizzativo che ha influenzato la quotidianità sia dei ristretti sia degli operatori penitenziari dopo la condanna che la Corte Europea dei Diritti Umani ha inflitto all’Italia alla luce della sentenza Torreggiani, che puntava l’indice sul trattamento inumano e sul sovraffollamento degli istituti penali.
Connections Between Single-Level and Bilevel Multiobjective Optimization
2011
The relationship between bilevel optimization and multiobjective optimization has been studied by several authors and there have been repeated attempts to establish a link between the two. We unify the results from the literature and generalize them for bilevel multiobjective optimization. We formulate sufficient conditions for an arbitrary binary relation to guarantee equality between the efficient set produced by the relation and the set of optimal solutions to a bilevel problem. In addition, we present specially structured bilevel multiobjective optimization problems motivated by real-life applications and an accompanying binary relation permitting their reduction to single-level multiob…
Donor and host B cell-derived IL-10 contributes to suppression of graft-versus-host disease
2014
Graft-versus-host disease (GvHD) is a frequent life-threatening complication following allogeneic HSC transplantation (HSCT). IL-10 is a regulatory cytokine with important roles during GvHD, yet its relevant sources, and mode of action, remain incompletely defined in this disease. Using IL-10-deficient donor or host mice (BALB/c or C57BL/6, respectively) in a MHC-mismatched model for acute GvHD, we found a strongly aggravated course of the disease with increased mortality when either donor or host cells could not produce this cytokine. A lack of IL-10 resulted in increased allogeneic T-cell responses and enhanced activation of host DCs in spleen and MLNs. Remarkably, IL-10 was prominently p…
A Peer-to-Peer Market Algorithm for a Blockchain Platform
2020
In an era of technological revolution in which everything becomes smarter and connected, the blockchain can introduce a new model for energy transactions able to grant more simplicity, security and transparency for end-users. The blockchain technology is characterized by a distributed architecture without a trusted and centralized authority, and, therefore, it appears as the perfect solutions for managing exchanges between peers. In this paper, a market algorithm that can be easily transferred to a smart contract for maximizing the match between produced and consumed energy in a micro-grid is presented. The algorithm supports energy transactions between peers (both producers and consumers) …
Utilización del manguito de isquemia en artroplastia total de rodilla. Práctica habitual en la Comunidad Valenciana y revisión bibliográfica
2019
The aim of this study is to know which is the routine clinical practice related to the use of ischemic tourniquet in total knee arthroplasty (TKA) in hospitals of Comunidad Valenciana and to make a Literature review. We performed a retrospective, descriptive, observational study based on questioner surveys of specialists in Orthopedic Surgery and Traumatology in 9 public Hospitals of Comunidad Valenciana 96, 9% of surgeons preferred the use of ischemic tourniquet in protheses implantation, versus 3,1% who did not. Among those who used Ischemic tourniquet, 57,8% preferred to inflate it before establishing a sterile field versus 39,1% who inflated the tourniquet once the sterile field was est…
Thyroid papillary carcinoma infarction after fine needle aspiration
1994
Complications following fine needle aspiration (FNA) are very infrequent and generally resolve spontaneously without treatment. The appearance of necrosis or infarction after FNA of the thyroid gland is an exceptional finding. An 83-year-old woman with a thyroid nodule was subjected to diagnostic FNA using a G23 needle. The patient noted a decrease in nodule size after FNA. A total thyroidectomy was performed 36 days after FNA. The cytological diagnosis was papillary carcinoma. Histology revealed massive coagulation necrosis affecting 80% of the tumor mass; the cytological diagnosis was confirmed. Iron pigment deposits were observed in the vicinity of the necrotic areas together with inters…
Endovascular Treatment with Drug-Eluting Balloon for Severe Subclavian Artery Stenosis Involving the Origin of the Vertebral Artery
2020
The first line approach for subclavian steal syndrome is PTA-stenting of subclavian artery. When the ipsilateral vertebral artery origin is involved or in closed proximity of the atherosclerotic lesion in the subclavian artery PTA-stenting is at risk of ipsilateral vertebral artery coverage. Herein we report our experience with DEB to address lesions involving the subclavian artery and the origin of the ipsilateral vertebral artery. From January 2017 to February 2019, patients presenting subclavian artery lesion involving the origin of the ipsilateral vertebral artery and treated using primary DEB, were included. Three patients, with left subclavian steal syndrome, were identified. The peri…
Gir boplikt lavere boligpriser?
2020
Siden 1974 har norske kommuner hatt adgang til å innføre boplikt for eiendommer som er eller har vært i bruk som helårsbolig. Ordningen har helt siden den ble innført, vært svært omstridt. Vi undersøker hvordan boplikt påvirker boligprisene. Geografisk avgrenser vi oss til kystkommuner på Sørlandet, der mange som har sin faste bopel andre steder i landet, etterspør fritidsbolig. Uten boplikt kan helårsboliger bli kjøpt opp for å bli brukt som fritidsboliger. Den empiriske analysen, basert på data fra fire sørlandskommuner, hvorav den største kommunen, Arendal, opphevet boplikten i 2014, viser at prisene i kystsonen økte da boplikten ble opphevet.
A branch-and-cut algorithm for the Team Orienteering Problem
2017
The Team Orienteering Problem aims at maximizing the total amount of profit collected by a fleet of vehicles while not exceeding a predefined travel time limit on each vehicle. In the last years, several exact methods based on different mathematical formulations were proposed. In this paper, we present a new two-index formulation with a polynomial number of variables and constraints. This compact formulation, reinforced by connectivity constraints, was solved by means of a branch-and-cut algorithm. The total number of instances solved to optimality is 327 of 387 benchmark instances, 26 more than any previous method. Moreover, 24 not previously solved instances were closed to optimality.