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  • 1
    ISSN: 1432-2315
    Keywords: Animation ; Biomechanics ; Distributed Computing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Physics-based animation can be generated by performing a complete dynamical simulation of multibody systems. This leads to the solving of a complex system of differential equations in which biomechanical results for the physics of impacts are incorporated. Motion control is achieved by interactively modifying the internal torques. Realtime response requires the distribution of the workload of the computation between a high-speed compute server and the graphics workstation by means of a remote-procedure call mechanism.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Rechtsmedizin 8 (1997), S. 13-16 
    ISSN: 1434-5196
    Keywords: Key words Matching ; FEM skull model ; Skull fracture ; pattern ; Computer tomography ; Photogrammetry ; Schlüsselwörter Matching ; FEM-Schädelmodell ; Schädelkalottenbruchsystem ; Computertomographie ; Photogrammetrie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Wesentliche Voraussetzungen für die Rekonstruktion von traumatischen Krafteinwirkungen sind: 1. Die Erzeugung eines individuellen, geometrisch korrekten und kontinuumsmechanisch adäquaten Körpermodelles, an welchem die Wirkung (i.S. eines Verletzungsmusters) der in Frage stehenden speziellen Verletzungsdynamik im Wege der Simulation validiert werden kann. 2. Die integrative und maßstabgerechte Superposition von in verschiedenen Datenquellen niedergelegten traumatischen Schädigungen. Für ein Schädeltrauma konnte die erste Voraussetzung dadurch realisiert werden, daß es gelang, aus den computertomograpisch gemessenen Daten mit Hilfe der Finite-Elemente-Technik ein individuelles, geometrisch korrektes knöchernes Schädelmodell zu erzeugen, dem für jedes finite Element realistische Materialeigenschaften zugefügt wurden, um so ein Objekt zu erhalten, das im Wege der Simulation der Dynamik der zu rekonstruierenden zerstörenden Kraftwirkung ausgesetzt werden kann. Die zweite Voraussetzung wird dadurch erfüllt, daß im Wege eines in der vorliegenden Arbeit vorgestellten Matching-Verfahrens eine sehr präzise Superposition von computertomographischen und von photogrammetrischen Daten gelingt.
    Notes: Abstract Requirements for the reconstruction of traumatic effects are: 1. The generation of an individual geometrically correct and mechanically adequate body model by which the effect (e.g. the injury pattern) of the special injury dynamics to be examined, can be validated by simulation. 2. The integrative and time-to-scale representation of traumatic lesions documented by different data systems. For a head injury the first requirement was realized using a finite element model (FEM) to construct an individual skull model from computer tomographic data. To each FEM cell the realistic material property was added to obtain an object which could be exposed by simulation to the dynamics of the destroying forces. The second requirement is fulfilled by getting a precise superposition of computer tomographic and photogrammetric data by the kind of matching presented in the paper.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1437-1596
    Keywords: Key words Ganglion cells ; Hippocampus ; Immunohistochemistry ; Mean optical density (MOD) ; Morphine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Notes: Abstract To investigate the topography of morphine distribution in the human brain, a method has been developed to detect morphine immunohistochemically. In this study hippocampus tissue from victims of heroin overdose (blood morphine concentrations 220 ng/g–1500 ng/g; 6-MAM positive urine sample), known for its high concentration of μ-opiate receptors was used. The immunohistochemical staining was performed with an anti-morphine antiserum originally developed for radio-immuno-assays. In comparison with control specimens from cases of sudden death without morphine exposition or a history of heroin abuse, the brains from victims of heroin overdose showed selectively stained ganglion cells, axons and dendrites, suggesting a massive concentration of morphine in the neuronal structures.
    Type of Medium: Electronic Resource
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