Rapid Quaternary subsidence in the northwestern German North Sea.

3D and 2D seismic data reveal the base-reflection of the Quaternary in the northwestern German North Sea locally at depths of more than 1000 m. This indicates extremely fast subsidence, with a rate of up to 480 m/Ma during the Quaternary, resulting in a NNW-SSE oriented sedimentary depocentre. Distinct iceberg scour marks, identified in 3D seismic data are used to calibrate quantitative subsidence analysis and to document shallow marine conditions during the Quaternary interglacials.

Bicontinuous zeolite polymer composite membranes prepared via float casting.

We prepared bicontinuous composite membranes comprising zeolite A particles. The particles form a monolayer which is embedded in a polymer sheet in such a way that each particle penetrates both surfaces of the polymer sheet. Preparation was done via "float casting"; a mixture of hydrophobized zeolite particles and an appropriate volume of a nonvolatile polymerizable organic liquid monomer was applied onto a water surface.

Spatiotemporal characterization of paced cardiac activation with body surface potential mapping and self-organizing maps.

In this study self-organizing maps (SOM) were utilized for spatiotemporal analysis and classification of body surface potential mapping (BSPM) data. Altogether 86 cardiac depolarization (QRS) sequences paced by a catheter in 18 patients were included. Spatial BSPM distributions at every 5 ms over the QRS complex were first presented to an untrained SOM.