145 research outputs found
Serious Games for Wrist Rehabilitation in Juvenile Idiopathic Arthritis
Rehabilitation is a painful and tiring process involving series of exercises
that patients must repeat over a long period. Unfortunately, patients often
grow bored, frustrated, and lose motivation making rehabilitation less
effective. In the recent years video games have been widely used to implement
rehabilitation protocols so as to make the process more entertaining, engaging
and to keep patients motivated. In this paper, we present an integrated
framework we developed for the wrist rehabilitation of patients affected by
Juvenile Idiopathic Arthritis (JIA) following a therapeutic protocol at the
Clinica Pediatrica G. e D. De Marchi. The framework comprises four video games
and a set modules that let the therapists tune and control the exercises the
games implemented, record all the patients actions, replay and analyze the
sessions. We present the result of a preliminary validation we performed with
four poliarticular JIA patients at the clinic under the supervision of the
therapists. Overall, we received good feedback both from the young patients,
who enjoyed performing known rehabilitation exercises using video games, and
therapists who were satisfied with the framework and its potentials for
engaging and motivating the patients
Band dispersion in the deep 1s core level of graphene
Chemical bonding in molecules and solids arises from the overlap of valence
electron wave functions, forming extended molecular orbitals and dispersing
Bloch states, respectively. Core electrons with high binding energies, on the
other hand, are localized to their respective atoms and their wave functions do
not overlap significantly. Here we report the observation of band formation and
considerable dispersion (up to 60 meV) in the core level of the carbon
atoms forming graphene, despite the high C binding energy of 284
eV. Due to a Young's double slit-like interference effect, a situation arises
in which only the bonding or only the anti-bonding states is observed for a
given photoemission geometry.Comment: 12 pages, 3 figures, including supplementary materia
Inclusion of new 5-fluorouracil amphiphilic derivatives in liposome formulation for cancer treatment
Correction for 'Inclusion of new 5-fluorouracil amphiphilic derivatives in liposome formulation for cancer treatment' by M. Petaccia et al., Med. Chem. Commun., 2015, 6, 1639–1642
Controlled thermodynamics for tunable electron doping of graphene on Ir(111)
The electronic properties and surface structures of K-doped graphene supported on Ir(111) are characterized
as a function of temperature and coverage by combining low-energy electron diffraction, angle-resolved
photoemission spectroscopy, and density functional theory (DFT) calculations. Deposition of K on graphene
at room temperature (RT) yields a stable (√3 × √3) R30° surface structure having an intrinsic electron doping
that shifts the graphene Dirac point by ED = 1.30 eV below the Fermi level. Keeping the graphene substrate at
80 K during deposition generates instead a (2 × 2) phase, which is stable until full monolayer coverage. Further
deposition of K followed by RT annealing develops a double-layer K-doped graphene that effectively doubles
the K coverage and the related charge transfer, as well as maximizing the doping level (ED = 1.61 eV). The
measured electron doping and the surface reconstructions are rationalized by DFT calculations. These indicate
a large thermodynamic driving force for K intercalation below the graphene layer. The electron doping and
Dirac point shifts calculated for the different structures are in agreement with the experimental measurements.
In particular, the K4s bands are shown to be sensitive to both the K intercalation and periodicity and are therefore
suggested as a fingerprint for the location and ordering of the K dopants
Orbitally resolved lifetimes in Ba(Fe0.92Co0.08)2As2 measured by ARPES
Despite many ARPES investigations of iron pnictides, the structure of the
electron pockets is still poorly understood. By combining ARPES measurements in
different experimental configurations, we clearly resolve their elliptic shape.
Comparison with band calculation identify a deep electron band with the dxy
orbital and a shallow electron band along the perpendicular ellipse axis with
the dxz/dyz orbitals. We find that, for both electron and hole bands, the
lifetimes associated with dxy are longer than for dxz/dyz. This suggests that
the two types of orbitals play different roles in the electronic properties and
that their relative weight is a key parameter to determine the ground state
Image resonance in the many-body density of states at a metal surface
The electronic properties of a semi-infinite metal surface without a bulk gap are studied by a formalism that is able to account for the continuous spectrum of the system. The density of states at the surface is calculated within the GW approximation of many-body perturbation theory. We demonstrate the presence of an unoccupied surface resonance peaked at the position of the first image state. The resonance encompasses the whole Rydberg series of image states and cannot be resolved into individual peaks. Its origin is the shift in spectral weight when many-body correlation effects are taken into account
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