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- Bohumír Bastl, Bert Jüttler, Miroslav Lávička, Tino Schulz
- Computer-Aided Design
- 2011

We present a new method for constructing G 1 blending surfaces between an arbitrary number of canal surfaces. The topological relation of the canal surfaces is specified via a convex polyhedron and the design technique is based on a generalization of the medial surface transform. The resulting blend surface consists of trimmed envelopes of one-and… (More)

Ringed surfaces and canal surfaces are surfaces that contain a one-parameter family of circles. Ringed surfaces can be described by a radius function, a directrix curve and vector field along the directrix curve, which specifies the normals of the planes that contain the circles. In particular, the class of ringed surfaces includes canal surfaces, which can… (More)

- Kerstin Rydzewski, Tino Schulz, Elzbieta Brzuszkiewicz, Gudrun Holland, Christian Lück, Jens Fleischer +2 others
- BMC Microbiology
- 2014

Francisella isolates from patients suffering from tularemia in Germany are generally strains of the species F. tularensis subsp. holarctica. To our knowledge, no other Francisella species are known for Germany. Recently, a new Francisella species could be isolated from a water reservoir of a cooling tower in Germany. We identified a Francisella sp. (isolate… (More)

- Tino Schulz, Kerstin Rydzewski, Eva Schunder, Gudrun Holland, Norbert Bannert, Klaus Heuner
- Archives of Microbiology
- 2012

In Legionella pneumophila, the regulation of the flagellum and the expression of virulence traits are linked. FleQ, RpoN and FliA are the major regulators of the flagellar regulon. We demonstrated here that all three regulatory proteins mentioned (FleQ, RpoN and FliA) are necessary for full in vivo fitness of L. pneumophila strains Corby and Paris. In this… (More)

Given a rational family of planar rational curves in a certain region of interest, we are interested in computing an implicit representation of the envelope. The points of the envelope correspond to the zero set of a function (which represents the envelope condition) in the parameter space combining the curve parameter and the motion parameter. We analyze… (More)

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