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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Visualization of black hole spacetimes
 Maixner, Michal ; Krtouš, Pavel (advisor) ; Svítek, Otakar (referee)
This work is focused on visualisation of Schwarzschild, Reissner- Nordström and Kerr black hole. The two-dimensional conformal diagram was constructed. In the case of Kerr black hole, the causal structure was visualized by intersection of chronological future of given point in spacetime with hyper- surfaces of constant value of Boyer-Lindquist coordinate t. Conformal diagram for Kerr black hole was constructed only in the neighbourhood of outer event horizon. Then the causal diagram, which is analogous to conformal diagram for Reissner-Nordström black hole was constructed. In all cases two-dimensional spa- celike hypersurfaces were chosen that were embedded into Euclidean space. The interpretation of time evolution of black hole universe was given to a sequence of such embedded hypersurfaces. In the case of Kerr black hole the embedding of outer ergosphere and outer event horizon were also constructed. 1
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Computational Study of the Interaction and adhesioin energies of polyaniline models with surfaces of the selected materials.
 Maixner, Michal ; Burda, Jaroslav (advisor) ; Tokarský, Jonáš (referee)
This work is focused on the properties of polyaniline placed on the model of silicate surface, namely its adhesion energy and spectra of polyaniline with different charge, computed by means of quantum chemistry. Computed spectra were compared with experimental data. The DFT metod ω-B97XD with 3-21G base was used for optimalization of the complex model and for determination of vibrational spectra the DFT metod ω-B97XD with 6-31G(d,p) base was used. Evaluation of the adhesion energy DFT metod ω-B97XD with 6-31G* base was used. The adhesion energy computed by interpolation to infinite polymer was 1,9kcal/mol. Computed Raman spectra was fit to experimental data. Spectrum found by this metod was similar to experimental in some aproximation, but more detail look would reavel some differences caused by not including of enviroment and of interaction between polyaniline
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2 Maixner, Miroslav
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