80 research outputs found
Editorial: Misuse and abuse of prescription drugs in custodial settings
© 2023 The Author(s). This is an open access editorial distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/Peer reviewe
intensive nutritional counselling and support and clinical outcomes in hemodialysis patients
Protein-energy wasting is frequently found in haemodialysis (HD) patients. Anorexia and hypophagia contribute to malnutrition, increased morbidity and mortality, but the clinical impact of correcting hypophagia remains uncertain. We evaluated whether correction of hypophagia influences morbidity and mortality in anorexic HD patients. Thirty-four HD patients were enrolled in a 2-year follow-up programme including regular nutritional assessment. Patients not meeting nutritional requirements during the follow-up, received nutritional counselling, consisting of advice, individually tailored diet and, in case of failure of dietary intervention, artificial nutrition. Biochemical, anthropometric, body composition parameters, morbidity and mortality were recorded in all patients at 12 and 24 months. At baseline, 14 patients (41%) were anorexic, and 20 patients (59%) non-anorexic. Anorexic patients were hypophagic and presented with reduced fat-free mass. After 12 and 24 months, cholesterol, albumin, lymphocyte count and BMI did not differ among groups, while FFM (%) in supplemented anorexic patients significantly improved, being not different any more vs non-anorexic (65.8±4.4 vs 65.4±8.9, respectively; p=n.s.; 65.8±4.4 vs 66.7±10.78, respectively; p=n.s.). Morbidity and mortality were not different among the two groups. In conclusion, in HD patients, nutritional counselling and nutritional support positively affect nutritional status in hypophagic patients and make the risk of morbidity and mortality in anorexic patients comparable to non-anorexic
Sprofondamenti in aree urbane: il caso del parco “Ytzhak Rabin” (via Panama, Roma)
In Rome urban area, within the garden dedicated
to Ytzhak Rabin (a portion of the Villa Ada park),
occurrence of a few collapses has been observed for the first
time in September 2012. In the surroundings, presence of
underground cavities- mainly catacombs- is conversely well
documented by previous studies.
Local authorities were immediately informed of sinkholes
formation, because collapses occurred very close to a
playground located in a highly frequented sector of the garden.
Propagation processes of the phenomena, periodically
monitored since their first observation, significantly fastened
after a period of heavy rainfalls on Rome area in January-
February 2014. Thus, multidisciplinary geophysical
investigations have been started in agreement with Civil
Protection of Rome Municipality, who has taken preliminary
safety measures (installation of fences and danger signals).
Hitherto, 28 sinkholes have been identified, aligned along a
WNW-ESE trending zone, testifying localized collapses of the
roof of underground cavities, probably belonging to the
palaeocristian catacomb systems dug nearby Via Salaria.
Preliminary geophysical prospections have been performed in
a small test area, in order to verify methods applicability and
thus program a systematic survey of the whole garden.
Drillings, and direct exploration of the accessible galleries, will
complete the reconstruction of underground geometry and
conservation state of vaults and pillars. Once completed the
hazard assessment, the planning of urgent works is expected
in order to restore the complete use of the garden.Published25 - 422TR. Ricostruzione e modellazione della struttura crostaleN/A or not JC
Use of remdesivir in children with covid-19 infection: A quick narrative review
SARS-CoV-2 infection has a severe course in a small percentage of children. Remdesivir has shown promising results in reducing hospitalisation time in adults, but data on mortality rate are conflicting and few studies are available on its use use in antivirals in children. We performed a quick narrative review of the available literature data regarding the usage of remdesivir in children and neonates. In children, remdesivir showed good safety profile, however bradicardia events have been reported in children. Remdesivir is cur-rently recommended by several guidelines in some subgroups of children with severe COVID-19, and should also be considered in critically ill patients, always in the context of the overall clinical picture and drug avail-ability. (www.actabiomedica.it)
Estimating gas accretion in disc galaxies using the Kennicutt-Schmidt law
We show how the existence of a relation between the star formation rate and
the gas density, i.e. the Kennicutt-Schmidt law, implies a continuous accretion
of fresh gas from the environment into the discs of spiral galaxies. We present
a method to derive the gas infall rate in a galaxy disc as a function of time
and radius, and we apply it to the disc of the Milky Way and 21 galaxies from
the THINGS sample. For the Milky Way, we found that the ratio between the past
and current star formation rates is about 2-3, averaged over the disc, but it
varies substantially with radius. In the other disc galaxies there is a clear
dependency of this ratio with galaxy stellar mass and Hubble type, with more
constant star formation histories for small galaxies of later type. The gas
accretion rate follows very closely the SFR for every galaxy and it dominates
the evolution of these systems. The Milky Way has formed two thirds of its
stars after z=1, whilst the mass of cold gas in the disc has remained fairly
constant with time. In general, all discs have accreted a significant fraction
of their gas after z=1. Accretion moves from the inner regions of the disc to
the outer parts, and as a consequence star formation moves inside-out as well.
At z=0 the peak of gas accretion in the Galaxy is at about 6-7 kpc from the
centre.Comment: 14 pages, 10 figures, accepted for publication in MNRA
Indagini geofisiche e geochimiche di un sinkhole in formazione nell’area di Guidonia (Lazio)
The Plio-Quaternary Acque Albule Basin is already
known for the occurrence of sinkholes; since the
spring 2014, it has been ongoing the study of an active subsidence
process, which formed a depressed area near the
Guidonia village. During the last year, the phenomenon has
become more intense giving rise to two collapses along the
eastern rim of the depression. Thus, geophysical and geogeochemical
investigation campaigns started in order to understand
the genesis and evolution of the phenomenon. Survey
results allowed a geological and structural characterization,
showing the presence of “travertino” at the depression margins
and its absence therein. It has been recognized, by the
geophysics, features with NW-SE and NNE-SSW direction
ascribable to a possible depression fracturing and consistent
with regional structural trends. Thus, it has been possible to
plan and perform geognostic investigation consisting in two
drillings aimed to define the stratigraphy of the marginal and
inner part of the depression.Published7 - 162TR. Ricostruzione e modellazione della struttura crostaleJCR Journa
Early stage sinkhole formation in the acque albule basin of central Italy from geophysical and geochemical observations
Sinkhole occurrence along the Tyrrhenian margin of the Central Apennines is of great importance
for applied research, land management and civil protection. This study reports on GPS-altimetry
magnetic, gravity, geoelectric, seismic, and soil gas measurements of a rapidly developing sinkhole
near the Guidonia military airport. The measurements revealed an elliptical 2-m depression
elongated 220 m in the NNE-SSW direction with the minor axis of 110 m. In spring of 2013, two
vertical cavities formed in the eastern and northeastern flanks of the depression whose depths and
shapes are rapidly evolving with the formation of widespread fracturing along the same side. The
geophysical observations image the developing sinkhole to a depth of some 50 m, the presence of
the Travertino lithotype around the depression (down to at least 40 m), and the lack of this lithotype
below the lowered area. The sinkhole's evolution appears to be structurally controlled by local and
regional faulting. These results are useful for designing further geophysical, geotechnical and
geochemical studies to monitor the sinkhole's evolution and to assess the hazard it presents in
densely urbanized area.Published36-477A. Geofisica di esplorazioneJCR Journalreserve
The mode of gas accretion onto star-forming galaxies
It is argued that galaxies like ours sustain their star formation by
transferring gas from an extensive corona to the star-forming disc. The
transfer is effected by the galactic fountain -- cool clouds that are shot up
from the plane to kiloparsec heights above the plane. The Kelvin-Helmholtz
instability strips gas from these clouds. If the pressure and the the
metallicity of the corona are high enough, the stripped gas causes a similar
mass of coronal gas to condense in the cloud's wake. Hydrodynamical simulations
of cloud-corona interaction are presented. These confirm the existence of a
critical ablation rate above which the corona is condensed, and imply that for
the likely parameters of the Galactic corona this rate lies near the actual
ablation rate of clouds. In external galaxies trails of HI behind individual
clouds will not be detectable, although the integrated emission from all such
trails should be significant. Parts of the trails of the clouds that make up
the Galaxy's fountain should be observable and may account for features in
targeted 21-cm observations of individual high-velocity clouds and surveys of
Galactic HI emission. Taken in conjunction with the known decline in the
availability of cold infall with increasing cosmic time and halo mass, the
proposed mechanism offers a promising explanation of the division of galaxies
between the blue cloud to the red sequence in the colour-luminosity plane.Comment: 12 pages, 8 figures, 1 table. Accepted for publication in MNRA
RETRACE-3D PROJECT, a multidisciplinary approach for the construction of a 3D crustal model: first results and seismotectonic implications
The RETRACE-3D (centRal italy EarThquakes integRAted Crustal modEl) Project has
been launched with the ambitious goal to build, as first result, a new, robust, 3D geological
model of broad consensus of the area struck by the 2016-2018 Central Italy seismic sequencePublishedBologna3T. Sorgente sismica4T. SismicitĂ dell'Itali
Do high-velocity clouds form by thermal instability?
We examine the proposal that the HI "high-velocity" clouds (HVCs) surrounding
the Milky Way and other disc galaxies form by condensation of the hot galactic
corona via thermal instability. Under the assumption that the galactic corona
is well represented by a non-rotating, stratified atmosphere, we find that for
this formation mechanism to work the corona must have an almost perfectly flat
entropy profile. In all other cases the growth of thermal perturbations is
suppressed by a combination of buoyancy and thermal conduction. Even if the
entropy profile were nearly flat, cold clouds with sizes smaller than 10 kpc
could form in the corona of the Milky Way only at radii larger than 100 kpc, in
contradiction with the determined distances of the largest HVC complexes.
Clouds with sizes of a few kpc can form in the inner halo only in low-mass
systems. We conclude that unless even slow rotation qualitatively changes the
dynamics of a corona, thermal instability is unlikely to be a viable mechanism
for formation of cold clouds around disc galaxies.Comment: MNRAS, accepted. 13 pages, 8 figures. Added discussion with respect
to submitted versio
- …