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Abstract

The town of Siemianowice Śląskie is where we can find a palace-and-park complex which nowadays serves as the Town Park. The complex used to be owned by the Henckel von Donnersmarck family; today it is open to everyone looking for either active or passive leisure. Apart from its historical value (the complex being the most significant monument of the town), the park is also of special importance to the environment. It can be seen as an enclave of greenery and a sanctuary for plants and animals. Moreover, together with the neighbouring recreation area and ecological sites, the park contributes to the symbolic “green lungs” of the town
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Abstract

The aim of this paper is presentation and comparison of calculation methods of the inductance matrix of a 3-column multi-winding autotransformer. Main and leakage autotransformer inductance was obtained using finite elements method. Static calculations were made at the current supply for 2D and 3D models, and mono-harmonic calculations were made at the voltage supply. In the mono-harmonic calculations the eddy current losses were taken into account, this made it possible to study relationship between the autotransformer parameters and the frequency. Calculations were made using Ansys and the authors' own programs in Matlab.
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Abstract

Heavy minerals in sandur deposits from the forefield of the Renard Glacier were investigated. They are concentrated only in fractions below 0.1 mm in diameter. Composition and preservation of heavy minerals indicate very high dynamic in the sedimentary environment. Most resistant minerals as zircon and tourmaline predominate and are strongly crumbled. They probably may serve as mineral indicators of sandur deposits. If distinguished regularities are confirmed in forefield in other Spitsbergen sandurs, then contemporary and Pleistocene sandur deposits could be compared. No mineralogie differentiation of intra- and extramorainal sandurs was noted.
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