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Dans le cadre du diagnostic, l’interprétation des images médicales est une tâche complexe pour la détection des anomalies potentielles. Un des procédés les plus utilisés pour cette caractérisation est la texture. De nombreuses études ont été menées pour développer des algorithmes de quantification de la texture. L’intérêt de la géométrie fractale en analyse d’images médicales est justifié par l’auto-similarité...
Novel biodegradable pH-responsive polymeric hydrogels based on β-cyclodextrin (β-CD) and gelatin (G) were prepared for controlled protein drug delivery studies. The polymeric hydrogels, G-g-poly(GMA) were obtained by grafting copolymerization of glycidyl methacrylate monomer (GMA) onto gelatin in presence of ammonium ceric nitrate (CAN) as initiator. Immobilization of β-CD onto G-g-poly(GMA) hydrogel...
Les potentiels évoqués auditifs en réponse à un son de parole (Speech Auditory Brainstem Response [Speech ABR]) sont une méthode de mesure objective non-invasive de l’activité neurophysiologique auditive au niveau du tronc cérébral. Les générateurs neurophysiologiques de cette réponse sont méconnus, mais les latences, ainsi que les caractéristiques spectrales du Speech ABR suggèrent que ceux-ci font...
The aim of this work was to synthesize and to characterize chemically and biologically (in vitro and in vivo) a nano-sized hydroxyapatite (nHA).Wet chemical precipitation at room temperature was performed, then chemical structure was explored using transmission electron microscopy, X-ray diffraction and Fourier transformed infrared spectroscopy. In vitro biological characterization was done using...
Orphanet aims to provide rare disease information to healthcare professionals, patients, and their relatives.The objective of this work is to evaluate two methodologies (Unified Medical Languages Systems [UMLS] and manual Orphanet-ICD-10 link-based mapping & string-based matching) used to map Orphanet thesaurus to the MeSH thesaurus.On a corpus of 375 mappings, the string-based matching provides...
The signal to noise ratio (SNR) of surface respiratory electromyography signal is very low. Indeed EMG signal is contaminated by different types of noise especially the cardiac artefact ECG. This article explores the problem of removing ECG artefact from respiratory EMG signal. The new method uses an adaptive structure with an electrocardyographic ECG reference signal carried out by wavelet decomposition...
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