Um sichere Bereiche für das Einschrauben von Knochenankern oder das Fräsen eines Implantatbetts in den Schädel zu identifizieren, wurde eine Software entwickelt, die erstmals eine automatische Messung der Knochendicke basierend auf CTund DVT-Daten erlaubt. Die Messwerte werden farblich codiert auf einer 3D-Rekonstruktion des Schädels dargestellt und ermöglichen somit eine Erkennung sicherer Ber...

in present paper, a numerical analysis for a rectangular cavity filled with a anisotropic porous media has been studied. it is assumed that the horizontal walls are adiabatic and impermeable, while the side walls of the cavity are maintained at constant temperatures and concentrations. the buoyancy force that induced the fluid motion are assumed to be cooperative. in the two extreme cases of he...

Elastic properties and internal states of isotropic sphere packings are studied by numerical simulations. Several numerical protocols to assemble dense configurations are compared. One, which imitates experiments with lubricated contacts, produces well coordinated states, while another, mimicking the effect of vibrations, results, for the same density, in a much smaller coordination number z, a...

In present paper, a numerical analysis for a rectangular cavity filled with a anisotropic porous media has been studied. It is assumed that the horizontal walls are adiabatic and impermeable, while the side walls of the cavity are maintained at constant temperatures and concentrations. The buoyancy force that induced the fluid motion are assumed to be cooperative. In the two extreme cases o...

An analytical-numerical formulation is presented for dynamic and static analysis of strip foundations on an elastic isotropic medium consisting of heterogeneous layers. Each layer is characterized by an S-wave velocity that increases or decreases linearly with depth, a constant material density, a constant Poisson’s ratio equal to l/4 and a constant linearlyhysteretic critical damping ratio. Th...

The combined isotropic-kinematic hardening model enables the description of cyclic transient elastic-plastic material behaviour steel. However, determination parameters and understanding their influence on response can be a challenging task. This study deals with individual steps calibration for simulation thin electrical steel sheets under loading. Specific recommendations are made kinematic i...

Der Ursprung der hochenergetischen kosmischen Strahlung bleibt ein Rätsel modernen Hochenergie-Astrophysik. Auch wenn die Theorie Teilchenbeschleunigung in relativistischen Schocks von Gammastrahlenblitzen es nicht verbietet, so war bisherige theoretische Erwartung, dass diese Objekte Teilchen nur auf begrenzte Energien beschleunigen sollten. Die kürzlich mit dem Teleskopsystem H.E.S.S. gemacht...