393 research outputs found
L'erbario del Prof. Manlio Chiappini (1924-1998) in Herbarium CAG
No full textThe herbarium of Chiappini, held in Herbarium CAG of Cagliari University, is presented. Prof. Manlio Chiappini, who dead the 4th of january 1998, teached Botany at the Athenaeum of Cagliari from 1965 to 1987 and from 1965 to 1986 he was director of Botanical Institute and Botanical gardens of Cagliari University. From a research carried out in Herbarium CAG is shown that Chiappini’s herbarium is compound of 1262 exsiccata, referred to 630 specific and subspecific entities (about the 30% of Sardinian flora), of which 45 referred to endemic species (about the 20% of Sardinian flora) and that the Museum Herbarium CAG itself is depositary of a number of 4 species pointed out, by the Author himself, for the first time to Sardinia
Meniett therapy may avoid vestibular neurectomy in disabling Meniere's disease
No full textConclusion. In those patients for whom vestibular neurectomy has been selected due to the disabling recurrence of vertigo spells, Meniett((R)) therapy has been shown to allow avoidance of this surgical procedure in a fairly high percentage of patients with Meniere's disease (MD). Our data would also support a better result when pressure treatment is acting on MD of short duration. Objective. To test the possibility that low pressure treatment (Meniett((R))) could avoid vestibular neurectomy in patients with MD that was refractory to medical treatment. Patients and methods. The setting was a tertiary referral centre in a university hospital. Thirty-six MD patients, for whom vestibular neurectomy was indicated, underwent Meniett((R)) treatment and composed a group in which a long-term (>2 years) follow-up was achieved. Additionally, different durations of MD('young' and 'old' MD) were distinguished and analysed separately. Results. Twenty-five patients (69.4%) were treated satisfactorily by using Meniett((R)) treatment and therefore avoided vestibular neurectomy. In half of them only one cycle of treatment was necessary
Modern lattice Boltzmann methods for multiphase microflows
No full textDuring the last decade, the lattice Boltzmann (LB) method has captured an increasing attention as an efficient tool for the numerical simulation of complex fluids, particularly multiphase and multicomponent flows. In this paper, we revisit the basic features of two modern variants of LB models for non-ideal fluids, which offer promising perspectives for the numerical simulation of complex microflows. © 2011 The Author
Delayed loss of residual hearing in Clarion (R) cochlear implant users
No full textAbstract: Hearing threshold has been measured in a group of patients following cochlear implantation with a Clarion(R) device for the last eight years. The patients had received either a pre-curved carrier or the Hi-Focus I plus Electrode Positioner System (EPS). The assessment was carried out within the first postoperative week as well as at a later stage, between six and 87 months, post-operatively. Residual hearing thresholds were still measurable early after surgery in 24.5 per cent of the patients, without differences between the two different Clarion(R) models. However, the number of subjects with measurable hearing dropped to 16.3 per cent as observed when hearing was measured at a later stage, with an equal distribution between the two groups of patients. From this study it has been possible to observe that only a limited number of patients maintain residual hearing after Clarion(R) cochlear implantation, and that this tends to decrease further over time. Nevertheless, the performance of these patients for speech tests did not appear to be affected by deterioration of the pure-tone auditory threshold
Endolymphatic sac in a menieric patient during acute attack: vascular ultrastructural findings
No full textAcquaporin-2 expression in the mammalian cochlea and investigation of its role in Meniere's disease
No full textPerisaccular vascular obstruction during an acute attack of Meniere’s disease.
No full textOBJECTIVE: To shed some light on the morphological findings underlying the occurrence of Meniere's attack.
MATERIALS AND METHODS: An endolymphatic sac sample was taken during ablation surgery from a patient who was experiencing a disabling stage with recurrent vertigo attacks from Meniere's disease. The sample consisted of the most proximal extraosseous portion of the ES, including both walls. The specimen was sent to Transmission Electron microscopic examination and the analysis was in particular focused on the subepithelial region.
RESULTS: No evidence of epithelial damage was observed, and the sample showed signs of high metabolic activity in all cellular components. The most striking findings were found at the. level of the subepithelial space, where diffuse signs of vascular thrombosis were identified. The intravascular occlusion was variously represented. by sludged erythrocytes and an amorphous, lipid-like,material.
CONCLUSION: The occlusion of perisaccular vessels might be regarded as a pathognomonic finding, concurring to the manifestation of acute Meniere's disease
Climate change, biodiversity loss and mental health: a global perspective
No full textClimate change can have various psychopathological manifestations which have been more actively addressed by scientific research only in recent years. Indeed, extreme weather events and environmental changes have been shown to be associated with a range of mental health problems. Following the destruction of ecosystems, biodiversity loss can cause mental distress and emotional responses, including so-called 'psychoterratic' syndromes arising from negatively felt and perceived environmental change. Studies investigating relationships between biodiversity and mental health reveal a complex landscape of scientific evidence, calling for a better understanding of this challenging issue. Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of the Royal College of Psychiatrists
Chemical abundance ratios of galactic globular clusters from modelling integrated light spectroscopy
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