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New types of membranes for electrolyzer hydrogen - oxygen
Hýbl, Jiří ; Sedlaříková, Marie (referee) ; Kunovjánek, Miroslav (advisor)
This work deals with the production of hydrogen and oxygen by electrolysis. Aims of this thesis are to measure different types of membranes and choose the best for use in elektrolyzer for hydrogen and oxygen production. Properties of membranes were tested in the laboratory electrolyzer in the short and long operation. The emerging gases from elektrolyzer were also tested on a gas chromatograph to determine the purity of produced hydrogen. At the same time are also tested different concentrations of KOH elektrolyte and the effect of concentrations on efficiency of electrolyzer.
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Favorit Brno / cycling stadium - bicross track / architectural study - design / stage 2021/22
Salajová, Barbara ; Hrabec, Josef (referee) ; Šindlar, Jiljí (advisor)
The assignment of the diploma thesis was preceded by the course NGA056 Specialized studio on the topic Architectural study of the cycling stadium of the Favorit Brno sports organization. The result of this pre-diploma project was the evaluation of the current condition of the velodrome and the creation of an option for its possible modification or demolition. The diploma thesis is a continuation of the previous project and in the form of a study it elaborates a proposal for a new building of the cycling stadium of the Favorit Brno sports organization. The newly designed velodrome responds to the current requirements of track cycling, such as the length of the track (250 m), the track material, the roofing of the building, and it also takes care to meet all the needs of athletes and visitors. The building is situated on the site of the original velodrome in Brno-Pisárky.
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Progressive methods for waste water treatment
Doležalová, Adéla ; Konečná, Eva (referee) ; Vondra, Marek (advisor)
This bachelor thesis contains a description of progressive separation methods for wastewater treatment. It deals with the basic principles of separation methods, including membrane processes, sonolysis, ozonization, photolysis and photocoalysis. Their strengths and weaknesses are also described. Part of the thesis is also evaluation and comparison of individual technologies with regard to their practical applicability.
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Problems of aeration dimensioning at WWTP´s.
Šplíchal, David ; Sousedík, Milan (referee) ; Hlavínek, Petr (advisor)
The objective of this work is to compare aeration systems of primarily mechanical and pneumatic aeration, as well as to compare various manufacturers of aeration components in terms of their advantages, positioning in aeration tanks, operation, use, efficiency and energy requirements. The second part is a description of the waste water treatment plant in the town of Česká Třebová and the development of an alternative calculation for the biological part with circulation activation, a circular sedimentation tank and a design for an aeration system in the aeration tank.
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Production and characterization of nanoporous alumina membranes
Šimik, Milan ; Márik, Marian (referee) ; Kynclová, Hana (advisor)
The Bachelor thesis mostly deals with manufacturing of membranes with anodic oxidation of aluminium in different conditions. In theoretical part are studied processes leading to creating of porous alumina and methods of measuring permeability of membranes. Practical part is aimed on manufacturing porous alumina with different conditions, which are afterwards suffused into form and diffuse characterized. Measured parametres are interpreted and compared with each other.
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Fabrication of SiO2 by anisotropic etching of silicon
Balajka, Jan ; Kolíbal, Miroslav (referee) ; Urbánek, Michal (advisor)
The aim of the bachelor's thesis is the fabrication of silicon dioxide (SiO2) membranes on silicon (Si) substrate by anisotropic etching of silicon. Masks for anisotropic silicon etching were prepared by electron beam litography and SiO2 wet etching. Individual steps of membrane fabrication are described, including used experimental conditions. In order to optimize the fabrication process, etch rates of Si/SiO2 in several solutions were measured. Results of the measurements are included in the thesis. Fabricated membranes were characterised by optical microscopy, scanning electron microscopy and spectroscopic reflectometry. Methods used for fabrication and analysis of defined structures created by anisotropic silicon etching are briefly summarized.
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Evaluation of the efficiency of a pilot ultrafiltration unit
Zelinová, Kristína ; Biela, Renata (referee) ; Kučera, Tomáš (advisor)
The first part of this bachelor thesis deals with a summary of current knowledge about membrane technologies and their application in drinking water treatment. There are listed different types of membranes and classification of membrane processes. Further on, there are defined operation processes that are related to their use in water treatment plants and there are also listed some of the water treatment plants in the Czech republic, where these technologies were or are still being used. In the second part if this thesis, there is described a situation in a village Poniky, in Slovak republic, which suffers from seasonally increased turbidity on one of their drinking water sources. The owner of the water supply system has an intention of treating this water quality problem by using a membrane technology. This thesis presents and evaluates results from the first membrane tests executed on the affected water source.
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Optical Method to Evaluate the Contractile Function of Isolated Cardiac Myocytes
Kopečný, Josef ; Harabiš, Vratislav (referee) ; Čmiel, Vratislav (advisor)
In this master´s thesis we will firstly focused on the description of a cyte in terms of structure as well as in terms of electrical and chemical processes. We will examine a processes, which make a contraction and the processes on cyte membrane. We will also analyse image processing methods and methods for measuring the contraction. The block diagram will be designed and requirements for the measuring platform will be specified. The programme will be realized in LabWIEV programming language.
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Application of KPM on Graphene/Si Surface Modified by FIB method
Konečný, Martin ; Rezek, Bohuslav (referee) ; Bartošík, Miroslav (advisor)
This diploma thesis is focused on the application of Kelvin probe microscopy on graphene fabricated by the chemical vapour deposition. The theoretical part of the thesis deals with basic principles of Kelvin force microscopy and focus ion beam. Further, basic properties of graphene and its possible fabrication methods are discussed. The experimental part is focused on the surface potential measurements on graphene membranes fabricated on the substrate modified by focus ion beam. Finally, atomic force microscope lithography was used for nanopatterning of graphene sheets.
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To Dvur Kralove by train - Transfer Terminal in Dvur Kralove nad Labem
Juránek, Marek ; Svojanovský, Viktor (referee) ; Žalmanová, Petra (advisor)
The terminal is becoming a heart of traffic in Dvur Kralove nad Labem. Linking of train and bus transport is inspired by a shape of a “courtyard” - open space, that is surrounded by buildings. This is a stage where acts of transportation, meetings, happiness and worries take place every day. Space has been designed so people don’t only use it for a purpose of transport, but also to enjoy moments of free time. The appearance gives a futuristic impression, however respects city’s history and tries to enrich its surroundings, so it doesn’t become just another place where people like to spend their time. Although trains and buses enter terminal from 21st century, design respects also its history as well as surroundings and use a form and function to promote them. “courtyard” terminal is a place for meetings and goodbyes, where a time flows and journey to adventure begins.
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