Jan Birger Preibisch

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In this paper, the conventional physics-based via (PBV) model is extended to multilayer substrate integrated waveguide (SIW) structures with via feeds. Furthermore, a novel PBV model for a more efficient modeling of multilayer SIW is proposed. This novel method allows to describe SIWs as transmission lines and to model the coupling between the layers with(More)
This paper investigates electromagnetic interference mechanisms in flat metallic casings using the contour integral method (CIM). Coaxial monopole probes are used to represent potential radiators, and a local field model is developed and combined with the CIM for evaluation of mutual admittance between the probes. Limitations of the method are discussed.
In this work we use the method of polynomial chaos expansion (PCE) for statistical analysis of a via interconnect in a printed circuit board (PCB) in presence of geometrical uncertainties. A physics-based via (PBV) model is applied to the case of two signal vias surrounded by ground vias. This model consist of a near-field part and a far-field part. Here,(More)
Iron overload lesions were described in various cells and tissues. Piglets of the group I were given 3.5 ml irondextrandaily (Ferrodex-Polfa) containing 250 mg Fe intraperitoneally during 14 consecutive days. Piglets of this group were sacrificed and examined: I A--just after last injection, I B--after 5 weeks since the last injection, I C--after 6 weeks(More)
This work is a part of the studies on the intestinal barrier undertaken to cast some more light on the pathogenesis of colibacteriosis in pigs. The objective of the work was to investigate the goblet cells in the intestines of pigs ill with spontaneous colibacteriosis in the form of oedema disease and gastrointestinal form. The investigations were carried(More)
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