Albin Bayerl

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High-frequency electroporation of whole Corynebacterium glutamicum cells without enzymatic pretreatment was achieved. Under optimized conditions concerning growth stage, washing of cells, cell concentration and pulse parameter transformation efficiencies of far more than 10(7) transformants per microgram pWST4B plasmid DNA were reached. Using(More)
PURPOSE To evaluate overall survival, local tumor control and cosmetic outcome after breast-conserving surgery followed by radiotherapy without boost irradiation. PATIENTS AND METHODS In a retrospective study 270 breast cancer patients were treated with breast conserving surgery combined with a homogenous radiation of the tumor bearing breast up to a(More)
Follow-up translocation and dicentric measurements in blood lymphocytes of five breast cancer patients were performed by FISH using painting probes for chromosomes 1, 4, and 12 simultaneously with a pancentromeric DNA probe, during 14 months after fractionated photon therapy affecting only small areas of the bone marrow (about 5%). The analysis of(More)
Graphene single-layer films are grown by chemical vapor deposition and transferred onto commercially available conductive tips for atomic force microscopy. Graphene-coated tips are much more resistant to both high currents and frictions than commercially available, metal-varnished, conductive atomic force microscopy tips, leading to much larger lifetimes(More)
AIM Improvement of the dose homogeneity in radiation treatment of the intact breast using 3D-planning and dose volume histograms. PATIENTS AND METHOD 3D-planning, including the calculation of dose volume histograms of the planning target volume, was performed on 15 patients, who underwent radiation therapy with tangential photon beams. A standard plan and(More)
The quantification and distinction of particulate guanylyl cyclases in the human intestine were considered by an enzymatic approach, which comprised the signal transduction from receptor binding to cGMP formation, and, in addition, by showing the expression of an intracellular portion of these transmembrane proteins. Basal guanylyl cyclase (GC) activities(More)
AlGaN/GaN HEMTs are devices which are strongly influenced by surface properties such as donor states, roughness or any kind of inhomogeneity. The electron gas is only a few nanometers away from the surface and the transistor forward and reverse currents are considerably affected by any variation of surface property within the atomic scale. Consequently, we(More)
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