National Repository of Grey Literature 31 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Požáry granite and its properties influencing durability
Šťovíčková, Michaela ; Přikryl, Richard (advisor) ; Matějka, Dobroslav (referee)
Požáry Granite, cropping out on NW margin of Central Bohemian Plutonic complex, is ranked to the most valuable decorative varieties of natural stone in the Czech Republic. The stone is characterised by plausible appearance, excellent polishing ability and favourable physical properties. It has been used for numerous structures and monuments in the Czech Republic and abroad. Despite declared favourable properties, it is prone decay, specifically on the polished surface. This bachelor thesis discusses granite petrology, their weathering and usage for decorative purposes. In the second part, the thesis summarizes current knowledge on Požáry Granite. The study focuses on its position within the Central Bohemian Plutonic Complex, mineralogy, petrology, usage, and historical/current exploitation. This bachelor thesis is generally aimed as introduction to the planned master thesis which should focus on experimental study of Požáry Granite.
Jeroným Mine near Čistá (Lauterbach): the current state of understanding and an update of geological research
Berka, Josef ; Přikryl, Richard (advisor) ; Matějka, Dobroslav (referee)
The Jeroným Mine near Čistá is a typical locality of Central European historical mining. Preserved mining areas bearing the signs of the original mining methods are the subject of the monument protection and museum exposition. The mining of tin at the Jeroným Mine, according to preserved sources, dates back to the beginning of the 16th century. The paper summarizes the geological conditions of the wider area of the Slavkov Forest and the context of the Čistá deposit. We will outline the history of mining at the Jeroným Mine and its historical significance.
Applied Mineralogy in Forensic Science field
Kotrlý, Marek ; Matějka, Dobroslav (advisor) ; Kopecká, Ivana (referee) ; Vojtíšek, Pavel (referee)
1 ABSTRACT Surprisingly, applied mineralogy plays an important role in the forensic science field. It is the miner- alogical phases which exist in many kinds of materials and traces but also the mineralogical analysis procedures which are often used in the field of so called trace evidence. For purposes of this study, 4 important fields of forensic microanalysis were chosen. These are those fields in which applied min- eralogy is applied and which characterize the width and heterogeneity of the concerned area. Powder X-ray microdiffraction plays quite an important and irreplaceable role not only in the direct phase analysis of substances in mixtures. The author designed, tested and introduced a set for centra- tion and direct check of the analysed surface during micro-diffraction analysis and also experimentally optimised sensing parameters for the different system configuration. A possibility to calculate the size of the nanoparticles (more precisely the size of a mono crystal domain) was tested. XRD methods ap- plication allows refining organic analysis for example in the case of new synthetic drugs. Micro diffrac- tion was also used for the first complex phase analysis of colour layers of the altar in the chapel in the castle of Křivoklát (dated 1480 - 1490). Forensic analysis of soil phases used to be,...
Decay of granites used for ashlar masonry in arch bridges
Mach, Kryštof ; Přikryl, Richard (advisor) ; Matějka, Dobroslav (referee)
This thesis deals with the decay of the granite used for ashlar masonry in arch bridges. The aging process and the functionality decrease of the granite tend to be faster in building structures than in natural conditions. Therefore, this ongoing change need to be closely researched. At the beginning, the thesis is focused on general degradation effects on building stone, which can cause for example the reduction of material or finally its damage and destruction. Further, the character of the granite is analysed with the respect to its quality and resistance to negative influences. In this chapter, this thesis also deals with the classification of granitic rocks according to the composition and the structure, which determine the specific name of the rock. Finally, the granite stone is also used in the constructions of arched bridges as their supporting elements, namely vaults and pillars. This type of construction has been widely used in the past. One of the subchapters focuses on the case study of the Legií bridge in Prague, which is a stone arch bridge made of granite blocks. In particular, the author describes the analysis of the sample, which was processed in the petrographic laboratories at the Faculty of Science of Charles University.
Prague metro as a place for geological excursions
Pekárovics, František ; Matějka, Dobroslav (advisor) ; Klomínský, Josef (referee)
Pražské metro jako prostor pro realizaci geologických exkurzí Abstract: The aim of this diploma thesis is to evaluate and explore the potential of the tiling materials used in the Prague metro and to create guidelines suitable for organizing geological excursions. Ysdfvwavweefawfbaljehbrrkvjasdhbflavjsdhbf alskdjfbalksjdfnaůksjdnaůkjsdfnaůksjsa Sdfasdfasdfasfavsdfvaskedjfnalksjdfnca weuifhmacskdjfmcapisdjfcaksdjnfcamůskdjfnmacsdkjfnmacůskjdfmnacůs kdjfmnaclskdjfnmacůskdjfnacf askdjfaůksjdf nasdkfjn askdjfn aůksjdnf aůskjdfn aůkjsdf akjsdn fakůjsd fnaůksjdfnaůksrjng adg
Possibilities of teaching geology at grammar schools
Jeníková, Kateřina ; Matějka, Dobroslav (advisor) ; Ziegler, Václav (referee)
This thesis maps the current state of the teaching of geology at grammar schools. The introductory part of the thesis contains history and present in the teaching of geology in the Czech republic. The next part is dedicated to own research and analysis of acquired data. Necessary information were obtained per structured interviews with twenty-four professors from selected Prague grammar schools. All the professors agreed that the geology is definitely belong to The General Educational Program For Grammar Schools. Grammar schools organizing teaching of geology in different ways. The most favorite is mineralogy and petrology. Schools are well equipped for teaching geology, but they do not always use contraption. Students do not use textbook of geology. The most popular geological issues at professors and students are Plate tectonics and Volcanic activity. Most teachers would be interesting in showing practical exercises and geologically interesting locations. According to the obtained data was compiled a draft of teaching of geology at four- year grammar schools and at higher level of perennial grammar schools.
Science excursion to the Krčský les area
Cibíková, Markéta ; Matějka, Dobroslav (advisor) ; Švecová, Milada (referee)
Excursions are an organizational form of teaching that is relatively often neglected in today's schools. Excursions are very important in education of pupils on grammer and secondary schools, because it allows to combine the knowledge of pupils gained during theoretical lessons in school with practical demonstrations of items, processes and relationships among objects in the terrain. Pupils are better acquainted with the required curriculum and more effectively fulfill the predetermined educational target. This diploma thesis introduces an example of such an excursion into the Krčský les area. In the theoretical part of this diploma thesis are summarized basic didactic aspects related to organizational forms of teaching, excursions, teaching methods and Framework Education Programmes. There are also chracteristics of the Krčský les area focused mainly on the natural conditions, specifically on geological, hydrological, botanical and zoological aspects. The last chapter of the theoretical part is devoted to the protection of the nature the into Krčský les area. The practical part of the diploma thesis is focused on the preparation of specific excursion into Krčský les area and the creation of worksheets for the excursion. The excursion was realized and subsequently evaluated in the last chapter of...

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See also: similar author names
5 Matějka, Daniel
1 Matějka, David
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