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Revision of belt conveyor drive
Kledus, Erik ; Hájek, Vítězslav (referee) ; Veselka, František (advisor)
The theme of the bachelor work is the revision of the conveyor belt drive. It contains a description of the belt drive, its distribution and possible malfunctions. It also contains the results of the revision. It deals with the formation of static charge and its elimination. Bachelor work also includes measurements and tests performed on conveyor drive.
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Development and evaluation of computer application for teaching and determination of natural species
PECHAR, Luboš
Available e-learning applications for teaching and recognition of natural species and testing the level of achieved knowledge were evaluated in this thesis. Problems and limits of these tools were identified. Based on the evaluation the unique tool for test developing was designed which can be used for self-learning as well as for testing within the school program. The outcome of the theses is a new application "Poznávačka". New application allows teachers to create lists of species which are available as a study material for their students.
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Experimental research of suitability and durability of sealants used in civil engineering
Hanzelková, Martina ; Schmid, Pavel (referee) ; Sedlák,, Petr (referee) ; Šlanhof, Jiří (advisor)
The dissertation thesis is focused of the method of testing the building sealnats. This is a summary of the research focused on the evaluation of sealants in interaction with the underlying materials. Attention is focused on the official test methods contained in European technical standards, the benefits of individual methods, their advantages and disadvantages are discussed. Also included are the overall findings of the practical application of the test procedures applied to 10 commercially available industrial sealants on 8 different substrates, including facade lining boards used for lightweight envelope systems. The dissertation thesis contains general conclusions about individual test methods. The research also includes various ways of preparing and conditioning test specimens that simulate different environmental conditions and, in some cases, play a crucial role in the final evaluation of sealants.
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Rock strength anisotropy - interpretation of laboratory tests
Vilimová, Anna ; Rott, Josef (advisor) ; Kučera, Petr (referee)
Anizotropní materiál má v různých směrech různé vlastnosti. Anizotropie pevnosti je zvláštní typ chování pevnosti v závislosti na podobě struktury horniny. Vliv na její velikost má zejména úhel mezi směrem zatížení a plochou oslabení, důležité jsou ale i další parametry jako je tvar a velikost vzorku, vlhkost aj. Podle tvaru této závislosti můžeme anizotropii rozdělit na "U type", "shoulder type" a "undulatory type" nebo ji můžeme členit podle způsobu jejího vzniku na přirozenou a vyvolanou. Pro výpočet pevnosti anizotropních materiálů existuje celá řada vztahů, většina z nich empiricky odvozená z velkého množství laboratorních zkoušek. V současné době nejpoužívanějším a nejkomplexnějším je Hoek-Brownovo kritérium porušení. Nejčastějším způsobem interpretace anizotropie pevnosti je grafické zpracování obálek pevnosti a závislosti napětí při porušení na úhlu mezi směrem zatížení a plochami oslabení. Kombinací těchto dvou grafů je možné vytvořit plochu porušení horniny. Skutečnost, že hornina nemá ve všech směrech stejnou pevnost, a způsob, jak anizotropii charakterizovat a spočítat její velikost, je zásadní zejména pro návrhy geotechnických konstrukcí a určení napěťového stavu horninového masívu.
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Evaluation of stone column defects using an ultrasonic method
Kršková, Šárka ; Kocáb, Dalibor (referee) ; Cikrle, Petr (advisor)
This Bachelor thesis deals with evaluation of structure defects in stone column using ultrasonic method. Content of this thesis is divided to theoretical and practical part. Aim of theoretical part is to explain process of evaluation of existing stone structures according to norm ČSN ISO 13822. This part also contains listings of method for stone testing and brief explanation of chosen types of rock used for stone structures. Practical part contains tests used on columns using ultrasonic method and laboratory tests of chosen samples. Evaluation of measuring using ultrasonic method is based on knowledge of this method and visual inspection of columns. In laboratory tests were compared results of chosen properties on examples of same type of rock. These examples had different shape, moisture and measurement.
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Process a review of the specified electrical equipment
Lanc, Rudolf ; Mach, Martin (referee) ; Veselka, František (advisor)
The revision of the electrical equipment means verifying the state of the equipment concerning its safety. The aim of the Bachelor Thesis is the revision of the selected electrical equipment. The particular equipment will undergo a revision, measurements, supervisions, and tests, which are subject of the norms. A revision report will be issued as a result of the established facts, in which possible failures will be described. Further on eventual risks will be explained and techniques how to eliminate them proposed.
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Specifics of assessment of old concrete structures
Mička, Michal ; Žítt, Petr (referee) ; Cikrle, Petr (advisor)
The bachelor thesis deals with evaluation of properties materials concrete structures of former textile factory Vlněna from the 19th century in Brno. The content of this work is divided into the theoretical and practical part. The theoretical part deals with the description of the methods used in the research of reinforced concrete structures, comparison of the types of beams used in the past with used today and unlike the principles of the design of reinforced concrete structures in the 1920s and 30s of the 20th century compared to the present time. There are also described components, properties and technologies of concrete production in the period between the war and the comparison with the present time. The practical part consists of on-site examinations and sampling. A large part consists of the evaluation of laboratory tests on the test samples taken from the solved part. A total of 24 test samples were performed. It also compares the strength of the concrete reinforcement with the reinforcement used today.
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Comparison of assessment of the state of bridges in Germany and the Czech Republic
Víša, Ondřej ; Stehlík, Michal (referee) ; Cikrle, Petr (advisor)
With the increasing age, amount and demands on the quality of bridges, the role of assessing their condition is increasingly important both in the Czech Republic and in Germany. This bachelor thesis compares the general state of bridges in both countries in its theoretical part; furthermore it compares the standards, terminology, the way of keeping record and evaluation. The practical part is reserved for survey and assessment of a bridge in Germany and for comparison purposes also in the Czech Republic. In its end the thesis summarizes the most fundamental differences between Czech and German methods.
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The issue of the revision corrected wiring residential building
Štefek, Roman ; Janda, Marcel (referee) ; Veselka, František (advisor)
Bachelor’s thesis deals with the verification of electrical installations in residential buildings. The task of the thesis is to get acquainted with the requirements of the regulations with a focus on Czech technical standard CSN 33 2000-6, CSN 33 1500 and follow-up. Specifically, the information gathered is used to the implementation of the review installations in renovated apartment building. The aim is to apply the theoretical knowledge and information for the practical verification of the electrical installation.
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Journals of teaching history as a practical methodical support to Czechoslovak teachers of history in the period 1948-1970
Bimková, Dana ; Mikeska, Tomáš (advisor) ; Parkan, František (referee)
This master thesis deals with history teaching from 1948 up to 1970. The main focus is not put on the way how the teaching looked really like, but it deals with the teaching methods how history should be taught. The major sources are journals of education for history teaching, mostly Dějepis ve škole and the preceding and following journals. The basic question is whether the magazines could have really helped the teachers in terms of teaching methodology and what was this support like. In the first chapter the history of education is described, the second chapter deals with the journals of education for history teaching. Next is described how a lesson should look like, the whole-class presentation, examination, revision, using a textbook. Special chapter deals with various tools for history teaching, including maps, images, audiovisual aids and literature. Moreover there is covered regional history, excursions, cooperation with museums and archives. In the end the basic question is answered; the journals were able to help the teachers well, many interesting and inspiring articles were in them. Nowadays, the problems of history teaching are almost the same, the have not been solved yet. Furthermore in the end are discussed special methodological debates in the half-public space that were present in...
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