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Effect of Organic Additives on Electrochemical Processes Influencing Zn-Air Battery parameters
Smejkal, Jan ; Čech, Ondřej (referee) ; Chladil, Ladislav (advisor)
The diploma thesis is focused on the study of the influence of selected organic additives on the properties and morphology of zinc deposit on the negative electrode when used in zinc-air accumulators. Organic additives have been selected based on the study of literature and previously done experiments. The deposition was made on the tin plate electrodes in a solution of 6 mol/l KOH saturated with ZnO with added additives. All chosen additives were studied with a focus on the morphology of zinc deposit and with regard to their ability to suppress dendritic growth. Zinc morphology was studied by using a Tescan Vega 3 electron microscope and a Rigaku MiniFlex HR 600 X-ray diffractometer.
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Smart Home: Digital Thermostatic Valve Controlled via WiFi
Smejkal, Jan ; Kapinus, Michal (referee) ; Materna, Zdeněk (advisor)
This bachelor thesis deals with smart home heating in households with radiators. The goal is to design a cheap digital heating head and to integrate it via WiFi and MQTT into the Home Assistant system. I have focused on keeping good design, head functions and a good user experience. Home Assistant enables showing graphs using InfluxDB and Grafana. Using a program in tool Node-RED enables it to lower heating temperature at the times of user absence and to schedule heating temperatures. The price of the complete unit is under 400 CZK. Temperature regulation was provided by a prediction controller, but it was replaced by a PID controller. The controller can regulate with the difference of maximal and minimal temperature of around 2 C. The user can control the boost mode of the head via a physical button or using the Home Assistant system. The resulting product is a good basis for a low-cost smart heating system.
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Gasoline Direct Injection
Smejkal, Jan ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
This bachelor thesis deals with the problematics of gasoline direct injection in combustion engines. There is a view of the history of the development of gasoline direct injection in the introduction. The main part focuses on the principle of the process function, description of components of fuel system and specific components of exhaust system. There is also a description of benefits of using gasoline direct injection, especially considering the amount of pollutants in exhaust gas. The following part of the work contains an overview of gasoline direct injection engines and their comparison in terms of power. In the conclusion, there is a consideration of gasoline direct injection development in the future.
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Academic Square - Faculty of Fine Arts
Smejkal, Jan ; Kyselka,, Mojmír (referee) ; Nový, Alois (advisor)
The theme of the thesis is a study of the project of the Faculty of Fine Arts in Brno. The site lies on boundary of two city parts, Brno – Střed and Brno – Žabovřesky and it is surrounded by streets Veveří, Šumavská and Bulínova.The project ties together with architectural study from subject TG02, which concerns the Faculty of Forensic Engineering. The final result of both parts is the project of both schools with common facilities. The part of the project is an underground garage where is a space for public parking which is demanded by city hall. The main idea was to create building with respect to surroundings and define itself to the street lines and create the small square inside the block of the buildings. The results are two six-floor buildings connected by two-floor object with atrium.
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Spark-ignition engine design for hybrid passenger car
Smejkal, Jan ; Dlugoš, Jozef (referee) ; Drápal, Lubomír (advisor)
This diploma thesis deals with design of four-cylinder spark ignition naturally aspirated engine with indirect fuel injection for hybrid passenger cars. The thesis begins with research of engines that meet the requirements of the thesis assignment. The research is followed by design of the engine, where the main components are described in detail. The last part deals with FEA analysis of the connecting rod which is followed by analytical computation of high cycle fatigue by the LSA method.
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The National Unification: development of a political party between 1934 and 1938
Jiroušek, Filip ; Stracený, Josef (advisor) ; Šmejkal, Jan (referee)
This thesis captures the development of a Czechoslovak political party National Unification from its foundation in 1934 until it was dissolved in 1938. It places the party in a political and historical context of the First Czechoslovak Republic, it analyses its program and ideological foundations. The thesis considers the concepts of nationalism and fascism which were and still are closely connected with the National Unification party. It describes the 1935 parliamentary elections from a viewpoint of the political party campaign and focuses on the contrast between the party expectations and the electoral results.
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Satanism in Metal
Smejkal, Jan ; Dočkal, Jan (advisor) ; Heryán, Ladislav (referee)
This thesis deals with satanism in metal music. First the theme of satanism is decribed, along with its ideology, typology and then its history from the Middle Ages through Aleister Crowley to Anton Szandor LaVey, the main figure of modern satanism. It also deals briefly with satanic symbolism, like pentagram, baphomet or inverted cross. The second part deals with metal music, its features, history and image. Satanism appears mostly in black metal, that is why a whole part is dedicated to it. Some Czech black metal groups are also introduced in this chapter. In the last part the results of questionnaires about the influence of satanism on metal music are processed. The respondents were members of Czech and Slovak metal subculture. The aim was to find out how these listeners of metal music perceive the influence of satanism on the metal scene, whether they take its features only as an entertainment or as a serious thing and whether a personal belief has any influence on music preferences.
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