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Analysis of chain gears production.
Březina, Stanislav ; Zemčík, Oskar (referee) ; Zemčík, Oskar (advisor)
Analysis of chain gears production including comparison and evaluation. Description of particular kinds of chain gears and wheels. Descripton of particular technologies and methods of production of chain gears and comparison of suitability of usage of particular methods, instruments and parameters.
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Manufacturing of cover
Březina, Stanislav ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
The graduation theses worked up within the frame of the master study programme M21-P, field of study M-STM, sets up a proposal of the technology of the casing manufacture. The casing will be made of steel plate 11 305.21. In terms of a linear study of the questions of deep drawing and the calculation, drawing in the instrument with blankholder was suggested. The upper ejector is instrumental to the extension of the components. The intermediate product will be a roundel created by scission of the sneet panel of 1 mm size. The average of the intermediate product is 124,7 mm, while series 100 000 pieces a year. In terms of the calculations for the operation of drawing, the hydraulic press ZH 30 with specified forming power was selected.
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Effect of management on the diversity and establishment of plants in the Giant Mountains
Trejbalová, Lenka ; Krahulec, František (advisor) ; Březina, Stanislav (referee)
Meadows, as an integral part of the Giant Mountains, depend on regular management, without it they can get degraded. The aim of this thesis was to evaluate the impact of different types of management (mulching, mowing with or without fertilization) on change in coverage, biomass and establishment of plants. The experiment took place in years 1997-2011 on the site called Sněžné Domky in Giant Mountains on 3 sites which differ in humidity and trophy. The effect of management on vegetation change was statistically conclusive. Mulching was preffered the most by Geranium sylvaticum, mulching and fertilization was preffered especially by these species: Holcus mollis, Alopecurus pratensis and Crepis conyzifolia. Mulching and no fertilization: Achillea millefolium. Avenella flexuosa preferred particularly mowing. Mowing and fertilization was preffered by Festuca rubra, Luzula luzuloides, Anthoxanthum odoratum, Agrostis capillaris, Veronica officinalis and Hieracium lachenalii. Mowing without fertilizazion was preffered by Potentilla erecta. The effect of management on the amount of biomass appeared statistically inconclusive (except for amount of old biomass). Biomass is more correlated by the weather and the trophy of the site than the type of management. The effect of management on establishment of plant...
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Manufacturing of cover
Březina, Stanislav ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
The graduation theses worked up within the frame of the master study programme M21-P, field of study M-STM, sets up a proposal of the technology of the casing manufacture. The casing will be made of steel plate 11 305.21. In terms of a linear study of the questions of deep drawing and the calculation, drawing in the instrument with blankholder was suggested. The upper ejector is instrumental to the extension of the components. The intermediate product will be a roundel created by scission of the sneet panel of 1 mm size. The average of the intermediate product is 124,7 mm, while series 100 000 pieces a year. In terms of the calculations for the operation of drawing, the hydraulic press ZH 30 with specified forming power was selected.
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Analysis of chain gears production.
Březina, Stanislav ; Zemčík, Oskar (referee) ; Zemčík, Oskar (advisor)
Analysis of chain gears production including comparison and evaluation. Description of particular kinds of chain gears and wheels. Descripton of particular technologies and methods of production of chain gears and comparison of suitability of usage of particular methods, instruments and parameters.
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