Christoph T. Schröder

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A t wo-dimensional nite-diierence model for elastic waves in the ground has been developed. The model uses the equation of motion and the stress-strain relation, from which a rst order stress-velocity f o r m ulation is obtained. The resulting system of equations is discretized using centered nite-diierences. A perfectly matched layer surrounds the(More)
BACKGROUND Autoimmune autonomic ganglionopathy (AAG) is an acquired immune-mediated form of diffuse autonomic failure. Many patients have serum antibodies that bind to the ganglionic acetylcholine receptors (AChRs) that mediate fast synaptic transmission in autonomic ganglia. Previous clinical studies and observations in animal models suggest that AAG is an(More)
—A two-dimensional (2-D) finite-difference model for elastic waves in the ground has been developed. The model uses the equation of motion and the stress-strain relation, from which a first-order stress-velocity formulation is obtained. The resulting system of equations is discretized using centered finite-differences. A perfectly matched layer surrounds(More)
We administered either 1 or 3 g/d of pyridoxine (vitamin B6) to five healthy volunteers and repeatedly followed serum pyridoxal phosphate levels, clinical symptoms and signs, quantitative sensory thresholds (QSTs), and sural nerve electrophysiology. Pyridoxine was discontinued at the first sign of either clinical or laboratory abnormality. In all subjects,(More)
— A prototype system that employs seismic surface (Rayleigh) waves and non-contact displacement sensors for the detection of buried landmines is being developed. The operating principle of this system is to interrogate the ground surface motion, resulting from a remote seismic source, in a region surrounding, and immediately above, a mine using a(More)
Chronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an acquired, chronic progressive or relapsing immune mediated disorder of the peripheral nervous system. Thickening of cranial nerves as a sign of central nerve involvement is increasingly reported in the last years. Our aim was to assess systematically for the first time the frequency of(More)
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