|
|
The Frame Construction of Atypical Floor Plan
Slanina, Bohumil ; Perla, Jan (referee) ; Švaříčková, Ivana (advisor)
The thesis describes the analysis and design part of reinforced concrete frame structure. Calculation was made by program SCIA Engineer and verified by manual calculations using simplified methods. Static solution includes an assessment of floor slabs, columns and stairs. The output is then individual drawings of reinforcement. The thesis also includes a study determining the effective width for single rib.
|
|
|
Structure analysis of molecular crystals
Janíček, Jakub ; Císařová, Ivana (advisor) ; Vojtíšek, Pavel (referee)
Summary: Diploma thesis covers characterization of molecular crystals by X-ray structural analysis. N-carbamimidazoylisonikotinamid and 1-phenylguanidin were chosen, because their potential use in second harmony generation. Their salts with inorganic acids were prepared and determined their structures. Phase transition of 4,6-diaminopyrimidinium nitrate was studied by x-ray diffraction and differential scanning calorimetry. This phase transition is accompanied by thermosalient effect, causing that the crystals jump. Keywords: thermosalient, jumping crystal, X-ray diffraction, non-linear optics, N-carbamimidazoylnikotinamid, 1-phenylguanidin, 4,6diaminopyrmidin.
|
|
|
Utilising satellite imagery for geological mapping and structural analysis
Sokolová, Anna ; Lexa, Ondrej (advisor) ; Martínek, Karel (referee)
The use of remote sensing data is becoming very important in Earth sciences. Satellite images are invaluable for studying hardly reachable places on Earth and they can significantly help increase the efficiency of work in areas with existing field data . In arid areas where rocks are exposed and directly visible at the surface, a lithology contacts mapping can be done based on satellite images. An overview of the possibilities of processing multispectral images is included in the theoretical part of this thesis, as well as a description of previously known methods for performing structural analysis based on remote sensing data. As the main part of this thesis, a new method for finding orientations of planar geological structures including a quality control of the input data was developed and described. This method was then applied in the Bodonchin area of the Mongolian Altai where the metamorphic foliation and pegmatite veins were analyzed. The method showed good applicability in the given area despite its limitations which are also discussed in the thesis.
|
|
|
Development of a synthetic methodology for the preparation of advanced cycloarenes and their analogues
Bambas, Daniel ; Stará, Irena (advisor) ; Míšek, Jiří (referee)
This Bachelor's Thesis deals with a design and preparation attempts leading to building blocks suitable for macrocycle construction with further utilization in cycloarene synthesis. In Theoretical Background methods for preparation of [n]circulenes and kekulene-like structures are summarized with focus on the final ring-closing steps. In Results and Discussion chapter efforts to prepare the selected advanced building block as a starting compound for macrocyle construction whose transformation using [2+2+2] cyclotrimerization as a ring-forming reaction might provide the selected cycloarene are described. Part Proposed alternatives of synthesis and discussion of further approach is about future possible development of this study. Experimental Part provides practical information about undertaken experiments and characterizations of the prepared compounds.
|
|
|
Preparation and analysis of experimental refractory alloy
Krupica, Roman ; Štěpánek, Roman (referee) ; Jan, Vít (advisor)
This thesis is focused on a preparation and especially on an analysis of an experimental Fe, Cr, W, Ni, Al, Ti refractory alloy. The first, theoretical, part of the work deals with refractory materials problematics in general. The second part of the work, experimental, is focused on the process of material preparation and its partial analyses in terms of hardness, but mainly in terms of structure. Light microscopy and scanning electron microscopy were used for these analyses, and energy dispersive spectrometry was used to analyze the chemical composition. The achieved results in all material states indicate that titanium nitrides randomly occur in the structure due to the nitrogen contamination. In the cast state, the material appears to be almost completely homogeneous without any significant casting defects. At grain boundaries, there is a uniform structured Laves phase population based on tungsten. After annealing at 800 °C/1h small fine and evenly distributed precipitates of the Laves phase occur together with even smaller precipitates of an intermetallic phase probably based on nickel and aluminum. Also, the amount of tungsten in the Laves phase at the grain boundaries was increased. During annealing at 1000 °C/5h, the precipitation particles of the Laves phase significantly coarsened and the occurrence of the intermetallic precipitates became uneven. At the same time, the Laves phase at the grain boundaries was again found to have more tungsten in it.
|
|
|
The influence of polite manners on communication in and structure of Jane Austen's Novels
Horáková, Eliška ; Beran, Zdeněk (advisor) ; Nováková, Soňa (referee)
This thesis is primarily concerned with individual structural analyses of Jane Austen's novels. It employs a new theory of story structure called Dramatica, which makes a departure from the standard methods of analysis that have trouble penetrating deeper than the surface structure of a story, and rather studies the basic conflicts between the individual components of the story. The thesis shows the advantages of this approach and tentatively recommends the ways in which it could be used in future works. The following part explores the changes in both society and literature (in particular concerning the development of the novel) which predated and therefore could influence Jane Austen. It also points out certain customs and behaviours which are not familiar to the present day reader and the knowledge of which can both simplify and enrich the study of the works. The final part applies the results of the analyses (the most important themes of the novels) to some passages from the stories. The aim is firstly to show the complexity and interconnectedness of Jane Austen's oeuvre, and secondly, to show it in the context of the conventions of the time.
|
|
|
Geophysical and remote sensing methodologies applied to the analysis of regolith and geology in Burkina Faso, West Africa
Metelka, Václav ; Ježek, Josef (advisor) ; Miller, John (referee) ; Martelet, Guillaume (referee) ; de Kemp, Eric (referee)
The oldest parts of continents, so-called cratons, are the focus of worldwide research not only because they represent primary constraints for our understanding of the early evolution of the Earth, but also because of their significant mineral potential. This work contributes to the understanding of the geological and geomorphological evolution of the West African Craton, by an integrated analysis of airborne geophysical and satellite remote sensing data constrained by field structural, lithological, geophysical, and geomorphological observations acquired around Houndé, Boromo and Banfora greenstone belts and associated granitoid domains in western Burkina Faso. The results of this integration suggest that the granitoid domains of western Burkina Faso are formed by numerous small- to medium-sized plutons, and the magnetic data provided a better definition of the actual pluton shapes. Airborne gamma ray spectrometry data aided in the mapping process in areas with less regolith cover. Three deformation events (D1-D3) can be distinguished in western Burkina Faso. A megacrystic tholeiitic basalt unit allowed us to establish stratigraphic correlations between the two belts and propose a crustal scale anticline (D1). The D1 penetrative structures, resulting from an E-W to WNW-oriented compression are...
|
|
|
Study of derivatization reactions for ESI-MS analysis of hardly ionizable rhenium aryl chlorocomplexes
Vlk, Mikuláš ; Štícha, Martin (advisor) ; Kozlík, Petr (referee)
Mass spectrometry with electrospray ionization is an excellent method for structural analysis of coordination compounds with outstanding sensitivity and selectivity. However, it fails to detect some low-polar rhenium complexes. This master thesis describes derivatization method of non-ionizable rhenium complexes with 1,2-dihydroxybenzene and 2,3- dihydroxytoluenene. Fragmentation mechanisms and structure of prepared complexes was studied using high resolution mass spectrometry and collision-induced dissociation (CID). Furthermore, density functional theory (DFT) computational method was used for prediction of bond cleavage based on bond lengthening.
|
|
|
Structure analysis of molecular crystals
Janíček, Jakub ; Císařová, Ivana (advisor) ; Vojtíšek, Pavel (referee)
Summary: Diploma thesis covers characterization of molecular crystals by X-ray structural analysis. N-carbamimidazoylisonikotinamid and 1-phenylguanidin were chosen, because their potential use in second harmony generation. Their salts with inorganic acids were prepared and determined their structures. Phase transition of 4,6-diaminopyrimidinium nitrate was studied by x-ray diffraction and differential scanning calorimetry. This phase transition is accompanied by thermosalient effect, causing that the crystals jump. Keywords: thermosalient, jumping crystal, X-ray diffraction, non-linear optics, N-carbamimidazoylnikotinamid, 1-phenylguanidin, 4,6diaminopyrmidin.
|
|
|
Utilization of methods of physicochemical and structural analysis in characterization of biosurfactants
Nešpor, Tomáš ; Hurčíková, Andrea (referee) ; Sedláček, Petr (advisor)
This bachelor thesis deals with the very actual topic of biosurfactants. In the theoretical part of the thesis, a literature review on this topic was carried out and on the basis of this research, physicochemical and structural analysis techniques suitable for testing these substances were selected. In the practical part, the model biosurfactants were first characterized by standard methods used to study these compounds. Fourier transform infrared spectrometry was chosen as a standard technique of structural analysis. As an example of a universal technique for the study of aggregation behavior was used tensiometry. In the next part of the thesis there were designed and optimized alternative techniques usable for fast and inexpensive physicochemical analysis of these substances. It was mainly a microplate assay and its modified alternatives. Thus, the methods of low sample consumption, but also effective in confirming the presence and a possible amount determination of the biosurfactant content in the solution. The result of this work is a few simple methods that have been proven effective in studying biosurfactants.
|
guest ::
