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DFT calculations of graphene regarding to biosenzoric applications
Špaček, Ondřej ; Friák, Martin (referee) ; Bartošík, Miroslav (advisor)
This diploma thesis is focused on calculation of both structure and electronic properties of the graphene after the adsorption of atomic and molecular oxygen and urea using the Density Functional Theory (DFT). The influence of van der Waals interactions on the structure and adsorption energy is studied, as well as influence of the thermal corrections, the charge density spatial distribution and the electronic doping of graphene after the adsorption of the adsorbant on the graphene.
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Optical characterization of inorganic lead halide perovskites using ab-initio methods
Matula, Radovan ; Špaček, Ondřej (referee) ; Liška, Petr (advisor)
Tato práce se zabývá olovnato-halogenidovými perovskity (OHP), novou skupinou materiálů, jež našla své využití v oblastech jako například fotovoltaika a optoelektronika. Potenciál OHP leží v jejich elektronové struktuře a snadno laditelném zakázaném pásu, což má za následek jedinečné fyzikální a funkční vlastnosti. Ke studiu optických vlastností a elektronové struktury OHP využíváme teorie funkcionálu hustoty (DFT). DFT metoda je ab-initio metoda založená na principu minimalizace funkcionálu elektronové hustoty k nalezení základní energie daného systému. DFT metoda společně s hybridními funkcionály byla využita pro získání správné elektronové struktury a hodnoty zakázaného pásu pro krystal CsPbBr3. Teoreticky získaná data byla využita v modelu efektivní hmotnosti k porovnání s fotoluminiscenčními spektry jednotlivých CsPbBr3 nanokrystalů s cílem zjistit energiové hladiny excitonů v závislosti na velikosti a tvaru nanokrystalů.
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Set of arrangements in Javornický stream floodplain for Rosnička pond water quality improvement
Špaček, Ondřej ; Hubačíková,, Věra (referee) ; Hyánková, Eva (advisor)
This thesis deals with the projection of water management and erosion control measures in the Javornický stream floodplain to improve water quality in the Rosnička pond near the town of Svitavy. In the teoretical part, the author summarized current practices in the areas of small river restorations and protection against soil erosion in the Czech Republic. In the practical part, the analasis of the area was first made, including the analysis of natural conditions, hydroecological monitoring of watercourses according to the HEM 2014 method and quantification of soil loss conditions according to the USLE method. Then, revitalization measures on the Javornický stream were designed to improve the self-purification of water and the restoration of ground water in the floodplain, as well as two variants of erosion control measures on agricultural areas to reduce the input of sediments into the hydrographic network. Finally, conceptual and technical recommendations for the implementation of these measures were formulated, as a basis for planning and decision-making of the political leadership of the town of Svitavy.
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Evaluation of erosion and runoff conditions in the Fryšávka basin
Špaček, Ondřej ; Kulihová, Martina (referee) ; Sobotková, Veronika (advisor)
Bachelor thesis is focused on the evaluation of the erosion and runoff conditions in the basin of the Fryšávka river. The objective of the thesis is the analysis of the soil loss, identification of critical points and profiles, determination of their characteristics and overall assessment of the vulnerability of cadastral territories. Analyses were carried out according to the applicable methodologies, with the use of programs ArcGIS, USLE2D and DesQ-MaxQ. In the assessed territory has been identified 6 critical points and 31 critical profiles. In twenty of them was carried out the calculation of flow rates. The calculated data was complemented by field research and photo documentation. From the evaluated data of the erosion and runoff conditions was made a ranking of the vulnerability. At the conclusion of the thesis are recommended the most vulnerable cadastral territories for further analyses and design of soil and water conservation measures which would mitigate the negative consequences of the identified unfavourable conditions.
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Proposal of 3D Electronic Catologue
Špaček, Ondřej ; Dvořák,, Jiří (referee) ; Dvořák, Jiří (advisor)
This Bachelor's thesis deals proposal of 3D electronic catalogue solution of private company. The work affords theoretic base of 3D modeling and methods 3D modeling uses. There is account of some options for display 3D graphics by 2D display devices. The work describes basic axiom of HTML, CSS and PHP languages too.
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The Development and Transformation of Temple Institutions of the 1st millennium BCE
Špaček, Ondřej ; Bertolini, Ludovica (advisor) ; Mynářová, Jana (referee)
AJ The aim of this thesis is to establish a historical overview of the happenings at the site of Sippar and its main temple of Ebabbar on the verge of Neo-Babylonian and Achaemenid periods through a compilation of available and published textual sources. At the moment, translating and researching unpublished texts is not necessary to achieve the thesis's aim and thus will remain omitted and only later it shall be expanded upon during the author's future research. As such, the author is going to address and merge the most notable information from the currently published literature in order to compile a thorough summary of the happenings at the site of the ancient city of Sippar that is up to date. As a result, the thesis hopes to give the reader the ability to navigate oneself in the history of Sipparean temple of Ebabbar throughout the end of Neo-Babylonian period with the primary focus on the institution's continuity and discontinuity and thus to serve as a reference point, guiding the reader to further, more specifically oriented literature. The question of where the change was prevalent and where it was ephemeral is going to be conveyed using several examples. Keywords: Sippar, Ebabbar, Neo-Babylonian period, Achaemenid period, 1st Millennium BCE, religious traditions, temple officials
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