National Repository of Grey Literature 15 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
Forms of Co-operation Between Municipalities
Svoboda, Vít ; Krbová, Jana (advisor) ; Pucandlová, Miroslava (referee)
This Bachelor thesis focuses on the problematics of municipalities in the Czech Republic. The first part of the thesis studies forms in which the municipalities can co-operate, legal measures, reasons and motivation that lead them towards the formation of collaboration. The second part of the thesis studies a chosen representative sample of villages and uses a questionnare method to research the reasons for collaboration and the most frequent form of co-operation. In the concluding part of the thesis, there are determined pros and cons of the sample.
Study of Electrochemical Insertion Cations to the Oxides of Transitive Metals
Svoboda, Vít ; Kadlec, Jaromír (referee) ; Trnková, Libuše (referee) ; Kazelle, Jiří (advisor)
Electrochromic devices are based on the intercalation processes to the active layer mostly WO3. The optical properties of active layer are changed by intercalation ions from the electrolyte. For that purpose are used Li ions. The mass of thin layer can be observed by the QCM method. This method is based on the changes of the resonance frequency of a quartz crystal resonator. The investigated substance is deposited on the surface of the resonator. Various metals (Pt, Au, Ag) and their compounds should be plated on the resonator. Most frequently, the resonators for the frequency 5,0 MHz are used. This frequency change is used for the detection of chemical changes of the electrode surface and is very sensitive.
Alternative designs for connection with cover and housing oil module
Svoboda, Vít ; František, Ondřej (referee) ; Škopán, Miroslav (advisor)
This diploma thesis describes the design of new connections and modification of existing connections cover and housing of oil module for trucks. This connection must resist the effects of operating oil trucks modules. These effects include pressure pulsation, temperature fluctuations, vibrations and weather conditions. The most important is the resistance of cover to rotation and loss of tightness. The work includes research of different connections usable for this application. Other research focuses on the use of connection of other manufacturers in the market. The work included a proposal of possible solutions for the modification of cover and housing and their evaluation using specified criteria with rating matrix. The final part deals with the development of the three best evaluated proposed solution. For each solution is made as necessary calculations, drawings and next steps of implementation of individual solutions.
Zinc based negative electrode for alkaline accumulators
Prchal, Jiří ; Svoboda, Vít (referee) ; Špičák, Petr (advisor)
The object of this project is research and preparation of the permanent zinc electrode in a strong alkaline surrounding for the usage in Ni-Zn accumulators. This system is characterized by a low overall ecological impact on environment, higher specific energy and higher electromotive force than nowadays commonly used systems (lead, nickel-cadmium). The goal of this project is to originate a new procedure, which will make possible to steady a zinc electrode. Every research faces a problem shaping changes of zinc electrode during cycling and related low cycle life. This work consists of the theoretical part, in which is explained a basic accumulators mechanism and practical part, in which is described performed research.
Study of fuel cells
Kamrla, David ; Svoboda, Vít (referee) ; Novák, Vítězslav (advisor)
This bachelor thesis offers a look into the issues of hydrogen fuel cells and is focused on low-temperature alkaline fuel cells (AFC). The primary aim is creation of the manufacturing process of the AFC electrodes, followed by the verification of these procedures by using them in experimental measurement. Further on, another possible options of the usage of various catalyzers and processes of AFC electrodes are presented. These options are evaluated and compared by experimental use of various pairs cathode – anode, with measured characteristics of the make-shift fuel cell being the outcome.
Investigation of mass changes by piezoelectric resonator
Kužílek, Jakub ; Svoboda, Vít (referee) ; Špičák, Petr (advisor)
An operation deals with a concept of the new cell for measuring weight changes with high precision through the use of quartz crystal micro-scales called QCM. The new cell is destined for crystal resonators which diameter is 14mm. The resonators are produced in the Czech Republic. A price is the greatest advantage of crystal resonators in comparison with original crystals. The next positive is higher mechanical tolerance which is outgoing of a guest-size. The cell designed by this way is tested in electrochemical system where a deposition of metallic copper in crystal is happening. A homologation of accuracy is judged by Faraday’s law and using Sauerbrey equation for quartz crystal microbalance in cyclic voltammetry measurement method.
Oscilloscope module with wireless data transmission
Kočík, Karol ; Svoboda, Vít (referee) ; Havlíková, Marie (advisor)
The aim of the thesis is the design and realization of the oscilloscope module with wireless data transfer. One part of the thesis is a short overview of the different types of AD converters. The main part is focused on the hardware configuration that allows modification of the wireless module of the oscilloscope, and the possibility of using in the industrial zone. The design takes into account reducing of consumption and EMC compatibility.
Spectral charakteristic of Ion area for different type of ionisors
Novák, Roman ; Svoboda, Vít (referee) ; Buřival, Zdeněk (advisor)
This work deals with issues of explanations and describing of a whole kind of probléme, which appear duiring a generations and measurings of a anionts. I would like to explain and warn for different factors why we should continue with measuring and inventing in this thema. Understanding of a anionts behavior and practice measuring of a ionts area is the most important part of my work, to correctly analyse iont area probléme, or to suggest suitable solution.
Investigation of intercalation of alkaline metals in electrochromic devices
Kortyš, Petr ; Špičák, Petr (referee) ; Svoboda, Vít (advisor)
This work deals with investigation of intercalation of alkaline metals in electrochromic devices by the help of the quartz crystal microbalance method. The general aim is to investigate the influence of molar mass and resistance on properties of vanadium pentoxide and tungsten trioxide electrochromic films. The main measuring method used for investigating of interacalation of sodium and lithium ions into these films is the cyclic voltammetry. Drawn graphs reveals that sodium and lithium ions shows different qualities during intercalation, particularly in participation of solvent, therefore, in the influence of molar mass and in structural changes in the films.

National Repository of Grey Literature : 15 records found   1 - 10next  jump to record:
See also: similar author names
1 SVOBODA, Vlastimil
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12 SVOBODA, Václav
1 Svoboda, V.
1 Svoboda, Veronika
1 Svoboda, Viktor
18 Svoboda, Vladimír
2 Svoboda, Vladimír,
12 Svoboda, Vojtěch
12 Svoboda, Václav
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