MUDr. BOLDAJI, Abdollah The author in his PhD thesis deals with the assessment of long-term stability of commonly used bevel crown. The work deals with the changes in color, shape, surface integrity, marginal adaptation and the state of the surrounding tissues to determine the ideal facet material.

This master thesis deal with analysis of possible alternative energy sources for health monitoring of railway trafic. Mainly focus on energy harvesting via SMART materials, specifically materials with piezoelectric and magnetostrictive properties. First theoretical background and real concepts are introduced, followed by material modelling and simulations. End of thesis cover parameter suggestion and SMART materials comparation and valorizations.

This master’s thesis deals with origin, structure and mechanical properties of architectured material. The theoretical part deals with composits and theory of architectured materials. Further, the cold spray technology is described and it is used to create the network of grooves in the architectured material. In the experimantal part the influence of groof geometry and profil on the mechanical properties of the resulting architectured material is researched. Microstructure and hardness of the samples were also examined.

The aim of these theses was the creation of a single-stage gearbox by additive technology FDM / FFF. By chosen values was made dimension calculation for gears. The 3D model of the gearbox was designed in 3D software Autodesk Inventor. Single parts were produced on an FDM 3D printer by Prusa Research. Manufacturing programs for parts were prepared in PrusaSlicer. These programs were used for producing individuals parts on 3D Printer. Transparent material and printing parameters for the top of the gearbox were chosen by visual test and test of light intensity. The total cost of model production is calculated in the work. The result of these is a completely working model of a single-stage gearbox with a transparent top of the gearbox.

The aim of this diploma thesis is to evaluate the growth of cultures and stands estabilished using bare-rooted and ball-rooted planting stock on working-plan area, forest district Jablunkov. For this purpose a total of 23 stands were selected (evaluated) on 46 research plots on forest district Jablunkov. In addition, the two economically most important tree species were selected for research; Norway spruce (Picea abies L.Karst) and European beech (Fagus sylvatica L.). These areas were selected on the basis of geographic and typological differences of habitat. A minimum of 60 viable individuals from bare-rooted and ball-roted group were measured on each plot and also the root deformations of the selected tree species were measured. The following parameters were measured for each individual: the height of the above-ground parts, the last accretion, the thickness of the root collar, the number of branches, the length of the branches, the size of the assimilation apparatus. The following features have also been observed and evaluated: loss, vitality, damage, trunk shape, crown shape, and root system deformations. From the results it was found out that out of 23 stands, ball-rooted planting stock was evaluated as better in 16 cases, in 5 cases was better bare-rooted planting stock and in 2 cases no better variant was found. In assessing of the root system, it was found that up to 100 % of the root system deformation was found in both types of planting stock.

The aim of the diploma thesis was to find out the state and the evaluation of the growth of cultures and stands based on plowed and cryopreserved seedlings on LS Náměšť nad Oslavou. The results show the current state of cultures and stands at selected habitats. The results should contribute to improving the quality and success of the artificial restoration of the forest. For the research and the final evaluation, research areas were selected, which in each pair had the same year of founding (differing by half a year of spring / autumn planting), were found on the same set of forest types. Comparison of research areas differed with the type of planting material used (cryopreserved, flattened). The research areas were on these forest types: 4S (5x), 4K (4x), 4O (2x), 3S (4x), 3H (2x), 3K (2x), 2K (1x). On each research area the parameters were measured on 60 specimens of the tree. The main measured parameters included above ground height, growth, root neck thickness, length and width of the assimilation apparatus, and other parameters needed to refine and to compare objectively. The measured values were evaluated using the statistical method and were compared for each variant of planting material and wood species. The results showed that there is a difference in the growth and development of the cultures and stands based on the cryopreserved and trimmed planting material, in favor of the cryopreservation planting material.

The purpose of this diploma thesis was to compare and evaluate the growth of potted and bare-root seedlings planted in locations SLT 5K, 2K, 2S and 1K, where trial areas were established. In 2014 200 potted and 200 bare-root seedlings of European spruce, European beech and Douglas fir were planted in these areas and only Scots pine was planted and evaluated in location SLT 1K. 10 parameters and 5 traits were measured and evaluated in all the areas and on all the planted plants at the end of the growing period of 2017. A statistical evaluation was subsequently performed according to individual location and seedling version. The results clearly indicate that the highest mortality was in areas located at SLT 1K and we can say that potted Scots pine grew best in this area. Potted European beech grew best in location 5K. Potted European spruce grew best in location 2K. The potted versions of the planted seedlings were not found to have grown better at location 2S according to the overall evaluation and no difference was found in the European beech or the Douglas fir in growth between the measured alternatives.

The aim of the diploma thesis was to verify the influence of different seed plant biotechnics on the growth of cultures and development of the root system of the cryopreservation material of spruce and beech forest in the 7th forest vegetation stage. The monitoring was carried out at LS LČR Janovice on forest types 7P and 7K. As the main biotechnology for testing, the seedbed was planted, the seedbed was planted without and with overlay, the seedling was planted without overlapping and seeded with seedless forks without overlapping. The effect of the balloon overlay was also evaluated. To evaluate the influence of different plant biotechnology on the growth of the cultures and the development of the root system we mainly served the criteria of the height of the above-ground part, the thickness of the root neck, the size of the assimilation apparatus, the loss, the vitality, the development of the root system, etc. The best plant biotechnology was evaluated for the spruce spruce on the area 7P planting seedless pipe without overlap and on 7K area planted with seamless sowing. In the case of forest beech, 7P was evaluated as the best seedling without overlap and 7K seedbed without overlapping. The suitability of hole seedlings for both studied species and areas was confirmed. The effect of seedling on the deformation of the root system was confirmed.

The aim of the thesis was to compare and evaluate the growth of bare-rooted and rooted seedlings of the same tree species based on the findings. All trees compared and monitored in this work were planted in the same area of the cane, in 2016. The evaluation was carried out on 4 research areas, these areas are characterized by sets of forest types 2S (fresh beech oak), 6K (sour spruce beech), 6S (fresh spruce beech) and 7K (acid beech spruce). There are three species of woody species in these areas, namely Norway spruce (Picea abies (L.) Karst.), Douglas fir (Pseudotsuga menziesii (Mirb) Franco) and European beech (Fagus silvatica L.). On each plot, 100 individuals were subjected to measurement for each variant of planting material in the autumn of 2017, for which the following parameters were evaluated: losses, height of the overground part in 2016 (which was measured after the scar marking the last increment), height of the above ground part in 2017, increment in 2017, the length of branch growth in 2017, the width of the crown, the thickness of the root neck, the trunk deflection from the vertical axis, the length and width of the assimilation apparatus, the straightness of the stem, the vitality of the plant. Based on the results, the following conclusions were drawn: On the SLT 6K surface in the case of woody beech, the variant of planting material grew better. In contrast, barkless planting stock grew better in Douglas fir tree species. The Norway spruce tree then grew better in the rooted variant. In the overall assessment of the abovementioned factors, it can be stated that on the SLT 6K the rooted seedlings grow better. In the SLT 6S area, the species of beech was found to be better growing in the bare-root variant. The Douglas fir also grew better in the bare-rooted variant and Norway spruce was best grown in the rooted roots variant. The result is that the bare-rooted planting material grows better on SLT 6S. On the area of SLT 7K there was a better growth of the beech in the rooted variant, as well as the better overall results of the spruce in the openrooted variant. Douglas fir grew better on the area in the barefoot variant. To summarize the findings of the observation on SLT 7K, it can be stated that the better results are achieved and hence the growing of the rooted planting material. In the SLT 2S area, the results for the growth of beech wood were better in the bare-rooted variant; Douglas fir tree has not been evaluated for this area due to insufficient seedlings when setting up the research area.

Epoxy resins have been broadly used in the industry for adhesives, laminates, coatings, composites, encapsulation of electronic devices, printed circuit boards, etc. Despite their excellent adhesion to different materials, heat and chemical resistance and good mechanical properties, they also exhibit few drawbacks like brittleness, high thermal expansion coefficient (CTE), poor resistance to crack initiation and growth. Therefore, the thesis is focused on the preparation of epoxy-silica hybrid materials exhibiting improved thermomechanical properties compared to the neat epoxides, without impairing their beneficial features. The main synthetic route of epoxy-silica hybrids' preparation has been the sol-gel process of alkoxysilanes, allowing either in-situ formation of high purity and homogeneity silica particles or creation of various siloxane structures in a form of liquid (sol) silica-based precursors. The sol-gel method, on one hand, helps to omit too high viscosity of nanofiller suspension and energy-intensive nanofiller dispergation problems, but on the other hand, is often associated with necessity to use solvents and to remove formed volatiles. Therefore, in the first part of the thesis, a simple solvent-free sol-gel procedure, enabling to minimize the side-effect of solvent evaporation and...