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Preparation of nanocrystalline ceramic materials made from zirconia oxide
Vlček, Ondřej ; Prajzler, Vladimír (referee) ; Šťastný, Přemysl (advisor)
Bachelor thesis is focused on preparation of nanocrystalline stabilized zirconia ceramics. The theoretical part is dedicated to zirconia ceramics. Theoretical part describes and unveil the transformation-induced toughening mechanism in partially stabilized zirconia ceramics, the processing routes of these ceramic materials and their utilization. The research part describes preparation of yttria partially stabilized nanocrystalline zirconia ceramics by slip casting method.
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Stabilization of the flooded sand pit near Hulín
Patková, Aneta ; Pelikán,, Petr (referee) ; Šlezingr, Miloslav (advisor)
The aim of this bachelor thesis is to assess the current state of the bank damaged by abrasion of the flooded gravel and sand pit in Hulín with the subsequent proposal of suitable biotechnical or biological stabilization and hydrological calculations to determine the prognosis of the prognosis retreat of the coast. As part of the field survey, photo documentation of abrasive log cabins caused by wind waves and water level fluctuations was taken. Part of the work is also the proposal of a total of six stabilization measures, the construction of which should prevent or slow down the effects of abrasion.
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Failure rate wastewater treatment plants
Boryśová, Michaela ; Vlčková, Veronika (referee) ; Hluštík, Petr (advisor)
This thesis deals with the sludge management in wastewater treatment plants. It provides a basic overview of methods for modifying risk material in sludge ending. The main goal of this work is to create a fault trees based on faults which occurred in the sludge management facilities. Furthermore, it was created frequency of failures assessment of the objects on wastewater treatment plant in Hodonín. Provided information were obtained during excursions of WWTP Hodonín and Zbýšov.
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Design of control system of two wheels mobile robot
Robenek, Vít ; Kovář, Jiří (referee) ; Houška, Pavel (advisor)
The aim of this bachelor thesis is to design control system of a two-wheel mobile robot and to subsequently implement this system using available sensor devices and National Instruments’ Single-Board RIO platform. The introduction briefly describes the general issue of two-wheel mobile robots as inverted pendulums, followed by an overview of several existing solutions to this problem. The following describes used robot including description of its parts and its mathematical model. Then the main part of the work follows, which is design of the sensory and control system. At the end of the thesis, the implementation is described along with evaluation of the stabilization system results.
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Innovative wood-based materials
Buriánek, Vlastimil ; Brožovský, Jiří (referee) ; Vaněrek, Jan (advisor)
This bachelor’s thesis deals with the issue of optimizing the modification process for plywood boards. Optimization consists mainly in evaluating different densification methods with different parameters of plasticization and stabilization. Psychical parameters (bulk density, swelling, water absorption) and strength parameters (bending strength, modulus of elasticity) of modified plates were chosen for the evaluation parameters. The practical part involved the verification of two thickening treatments on birch plywood.
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Revitalization of River
Odehnalová, Zuzana ; Marková,, Jana (referee) ; Šlezingr, Miloslav (advisor)
The thesis deals with the issue of revitalization on the selected parts of the water course. Assessment of current condition and channel capacity and design of revitalization measures were made on a water course Veverka on the part of the river kilometer 0.650 - 1.000. This thesis first deals with the revitalization of historical aspect. When and why become to regulation of flows and what reasons leads to the effort to restore natural flows, the near-natural appearance. In the theoretical part is introduced an overview of revitalization measures with their brief description. The work includes the design of several revitalization measures: stabilization of slopes and bank scours fascine-gravel drum, wattle work and hand-placed rubble, removing dead wood, restoration of beaching and planting of vegetation accompaniment.
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Stabilization of bank
Podola, Martin ; Pelikán, Petr (referee) ; Šlezingr, Miloslav (advisor)
The subject of this bachelor’s thesis is assessment of reservoir banks Bystřička in terms of abrasion. Judgement is focused on two main points on the northeastern bank of the reservoir near the tributary. It is an area near the hotel Beskydská Tatranka. Thesis is finished with design of selected biotechnical measures to slow or stop erosions banks.
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Immobilization of heavy metals in the cement matrix with the admixture of natural zeolite
Semerádová, Nikol ; Bayer, Patrik (referee) ; Vyšvařil, Martin (advisor)
Heavy metals released to the natural ecosystem constitute significant risks not only for organisms, but also for water supplies in the nature. There are a number of analytical methods for the determination of heavy metals. Each of them is suitable for different element and its character. Since the results of the analysis are applied during the solidification and stabilization, it is necessary to ensure the highest correlation between hazardous waste and solidification medium for maximum inhibition of toxic ions. This work investigates the stabilization of heavy metals binders based on cement base with admixture of the natural zeolite and its possible use for the solidification of heavy metals in soluble form.
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The nonstationary motion of solid body in a liquid
Stejskal, Jiří ; Hlavička, Rudolf (referee) ; Čermák, Libor (advisor)
Obsahem této práce je numerická simulace dvoudimenzionálního proudění nestlačitelné vazké kapaliny. Uvažujeme rotující elipsu soustředně umístěnou v kružnici. Prostor mezi elipsou a kružnicí je vyplněn kapalinou. Cílem je popsat proudění kapaliny vyvolané otáčející se elipsou, tzn. stanovit rychlostní pole a rozložení tlaku. Dále pak chceme stanovit přídavné silové účinky kapaliny působící na elipsu. Tyto výsledky získáme řešením Navierových-Stokesových rovnic metodou konečných prvků. Důraz je kladen na odvození numerického schématu v maticové formě vhodné pro numerickou implementaci. Časově závislá výpočetní síť je popsána pomocí Arbitrary Lagrangian-Eulerian (ALE) formulace. Pro obdržení relevantních výsledků je nutná stabilizace metody konečných prvků. Uvedené výsledky naznačují, že odvozená metoda je dostatečně přesná.
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