Stroke is an acute onset of neurological dysfunction due to abnormality in cerebral function with resultant signs and symptoms that correspond to involvement of focal areas of the brain. The term cerebrovascular Accident (CVA) is used interchangeably with stroke to refer to the cerebrovascular conditions that accompany either ischemic or hemorrhagic lesions. Clinically, a variety of deficits are possible, including changes in the level of consciousness, and impairments of sensory, motor, cognitive, perceptual, and language functions.To be classified as stroke, focal neurological deficits must...

Nanotechnology is the understanding and control of matter in the nanoscale level, having dimensions between approximately 1 and 100 nanometres. At this level, matter can exhibit remarkable physical, chemical, and biological properties that differs significantly from those of bulk materials, single atoms, and molecules. The proportionately larger surface area to volume ratio seen in nanoscale materials is one of the most distinguishing features offered by nanotechnology.Nanotechnology will revolutionize health care, especially dentistry, more profoundly than many other developments of the...

Diese Arbeit ist durch die Tatsache motiviert, dass eine egoistische Replika-Zuweisung zu einer insgesamt schlechten Datenzugänglichkeit in MANETs führen kann. In diesem Buch werden drei Arten von Entschärfungsansätzen vorgestellt, die die Reputation mobiler Knoten unter Verwendung eines auf der Vergangenheit basierenden Vertrauensfaktors, eines auf dem gegenwärtigen und vergangenen Verhalten basierenden bedingten probabilistischen Faktors und eines auf der Zukunft basierenden prognostizierten Vertrauenswerts für eine effektive Entschärfung egoistischer Knoten berechnen. Die entdeckten...

Ce travail est motivé par le fait qu'une allocation de réplique égoïste pourrait entraîner une mauvaise accessibilité globale aux données des MANET. Cet ouvrage présente trois types d'approches d'atténuation qui calculent la réputation des noeuds mobiles à l'aide d'un facteur de confiance mettant en évidence l'histoire passée, d'un facteur probabiliste conditionnel basé sur le comportement présent et passé et d'une valeur de confiance prévisionnelle future pour une atténuation efficace des noeuds égoïstes. Les noeuds égoïstes détectés doivent être isolés du chemin...

Over the past two decades, the nickel-titanium(NiTi)rotary instruments have highly improved the quality of the cleaning and shaping of the root canals.The superelasticity and shape memory of these instruments reduce the possibility of the canal transportation along with saving the time for both the patients and the clinicians.Several commercial types of these instruments, produced by manufacturers ,have currently become available by modifying the characteristics of the wonder NiTi alloy and also the design of endodontic file system .Upto this date,five generations for NiTi rotary instruments...