Les fistules congenitales de la levre inferieure : a propos d’une observation

Objectifs : Les fistules congénitales de la lèvre inférieure sont rares pouvant être soit isolées soit associées à d’autres malformations notamment les fentes vélopalatines. Le but de notre étude est de rappeler à travers une observation les éléments épidémiologiques, cliniques, étiopathogéniques et les modalités thérapeutiques de cette affection.Méthode : Nous présentons le cas d’une fillette âgée de 9 ans qui présente une double fistule labiale inférieure sans autres malformations associées, mais l’enquête étiologique retrouve 10 cas similaires dans la famille.Résultats : une excision complète du trajet fistuleux a été réalisée chez notre patiente avec un bon résultat esthétique et une absence de récidive après un recul d’une année.Conclusion : la découverte de fistules labiales inférieures impose un bilan complet à la recherche de malformations associées ainsi qu’une enquête familiale.Mots-clés : fistules labiales - malformations congénitalesPurpose of study: Congenital lower lip fistulae are rare and can be either isolated or associated with other malformations, namely soft palatal clefts. Our study aims at recalling through an observation the epidemiological, clinical etiopathogenic elements and the therapeutic courses of this disorder.Method: We present the case of a 9-year old little girl with a lower lip double fistula and no other accompanying malformation. The etiological study reveals 10 similar cases within the family.Results: A complete excision of the fistulous path has been carried out on our patient with a good esthetic result and the absence of a recurrence a year later.Conclusion: Finding out lower lip fistulae requires a thorough check up for associated malformations as well as a family inquiry.Key-words: lip fistulae- congenital malformation

Can pervasive sensing address current challenges in global healthcare?

Important challenges facing global healthcare include the increase in the number of people affected by escalating healthcare costs, chronic and infectious diseases, the need for better and more affordable elderly care and expanding urbanisation combined with air and water pollution. Recent advances in pervasive sensing technologies have led to miniaturised sensor networks that can be worn or integrated within the living environment without affecting a person's daily patterns. These sensors promise to change healthcare from snapshot measurements of physiological parameters to continuous monitoring enabling clinicians to provide guidance on a daily basis. This article surveys several of the solutions provided by these sensor platforms from elderly care to neonatal monitoring and environmental mapping. Some of the opportunities available and the challenges facing the adoption of such technologies in large-scale epidemiological studies are also discussed

A Formal Study of the Privacy Concerns in Biometric-Based Remote Authentication Schemes

With their increasing popularity in cryptosystems, biometrics have attracted more and more attention from the information security community. However, how to handle the relevant privacy concerns remains to be troublesome. In this paper, we propose a novel security model to formalize the privacy concerns in biometric-based remote authentication schemes. Our security model covers a number of practical privacy concerns such as identity privacy and transaction anonymity, which have not been formally considered in the literature. In addition, we propose a general biometric-based remote authentication scheme and prove its security in our security model

A New Design for Compact Size Wireless Power Transfer Applications Using Spiral Defected Ground Structures

In this article, a new wireless power transfer (WPT) design is proposed for improving the efficient of system. The suggested system contains two spiral defected ground structure (DGS) resonators coupled back-to-back. The spiral DGS alone acts as band stop filter (BSF), and when the two resonators are coupled back-to-back, a BSF is emerged leading to WPT system. The DGS resonators are loaded through chip capacitors for miniaturization. The proposed structures are fabricated and tested. The proposed system has a highest efficiency of 97.7% at a transmission distance of 10 mm which is suitable for biomedical applications. Both simulated and experimental results are in good concurrence

Estimation de l'erreur de phase d'une modulation QAM conjointement au décodage itératif d'un code bloc

Ce papier présente une nouvelle technique de synchronisation de systèmes exploitant des turbo-codes blocs. L'estimation de la phase repose sur l'exploitation de la valeur extrinsèque en sortie du décodeur pour estimer cet écart en phase conjointement au décodage itératif des symboles. Nous présentons plusieurs résultats montrant que l'algorithme proposé permet de poursuivre des décalages en fréquence, qu'il fonctionne pour des modulations QAM et qu'il fonctionne à faible rapport signal à bruit (RSB). Une comparaison de la variance de cet estimateur à la borne de Cramer-Rao vraie (CRB) et modifiée (MCRB) est également effectuée

Compact Size Triple Notched-bands UWB Antenna with Sharp Band-Rejection Characteristics at WiMAX and WLAN Bands

In this paper, a compact triple band-notched Ultra Wideband (UWB) antenna with sharp band-elimination features and controlled notched bandwidths is proposed and discussed. The design is made up of a rectangular-shaped   patch UWB planar monopole antenna with double collections of band-notched configurations. The band-notched configurations are involved to produce the desired lower and upper stop bands with good frequency selectivity and suitable stop bandwidths. The first notch is realized by using a C-shaped slot etched in the radiating patch in order to eliminate the interference at the WiMAX (3.4 - 3.8 GHz) applications. The second and the third notches are realized together by using a pair of U-shaped resonators that are located beside the feed line in both sides to eliminate the interference with the lower WLAN (5.15–5.35 GHz) and the higher WLAN (5.725–5.825GHz) bands.  Additionally, the bandwidths of the lower and upper stop bands can be control separately by changing the parameters of the band-notched configurations. Furthermore, the suggested triple notched bands UWB antenna is optimized, fabricated, and measured for verification purposes. The measured results are close to the simulated ones

Impaired perceptual learning in a mouse model of Fragile X syndrome is mediated by parvalbumin neuron dysfunction and is reversible.

To uncover the circuit-level alterations that underlie atypical sensory processing associated with autism, we adopted a symptom-to-circuit approach in the Fmr1-knockout (Fmr1-/-) mouse model of Fragile X syndrome. Using a go/no-go task and in vivo two-photon calcium imaging, we find that impaired visual discrimination in Fmr1-/- mice correlates with marked deficits in orientation tuning of principal neurons and with a decrease in the activity of parvalbumin interneurons in primary visual cortex. Restoring visually evoked activity in parvalbumin cells in Fmr1-/- mice with a chemogenetic strategy using designer receptors exclusively activated by designer drugs was sufficient to rescue their behavioral performance. Strikingly, human subjects with Fragile X syndrome exhibit impairments in visual discrimination similar to those in Fmr1-/- mice. These results suggest that manipulating inhibition may help sensory processing in Fragile X syndrome