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The natural seasonal changes in the food choice and digestive tract of wild ruminants
Kamler, Jiří ; Homolka, Miloslav
Herbivore populations all over Europe have been strongly influenced by human activities. A combination of harvest, changes in forest structure, supplementary feeding, predator extirpation and others factors have led in most cases to increases of their populations and a severe impact on the composition and structure of the forest vegetation. The food choice of free living ungulate species is strongly influenced by season and animal species and changes in diet composition and quality cause the changes in the digestive tract. Effective management of ungulate populations and forest ecosystems should be based not only on detailed information about the impact of deer browsing and the number of deer to harvest but also on the density of deer species, the food supply, the structure of diets consumed by individual species, attraction and quality of the individual components of food supply the total quality of food taken and seasonal changes in digestive tract.
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Vakuová metalurgie intermetalik TiAl
Zemčík, L. ; Dlouhý, Antonín ; Król, S. ; Pražmowski, M.
To be able to melt successfully type gamma TiAl alloys it is absolutely necessary to solve the fundamental metallurgical problems associated with the reactions between the melt and the refractories of crucibles and ceramic moulds, with the reactions between the melt and residual gases in the furnace chamber, and with the evaporation of aluminium from the melt. The paper deals with the physico - chemical analyses of the above processes and gives their evaluation based on the results of experimental melts of the type of Ti48Al2Cr2Nb1B (at.%) obtained in vacuum induction furnace. The work also gives the results of oxidation tests for the Ti48Al2Cr2Nb1B(at.%) alloy.
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Determination of threshold values of components with protective layers
Náhlík, Luboš ; Bareš, Pavel
The contribution is focused on the influence of existing fatigue cracks in protective layers on fatigue life of structures with protective layers. The problem is solved under conditions of linear elastic fracture mechanics with help of finite element method. Is shown, that in the case of the hard protective layer on the ductile substrate represents existing crack with its tip on the bi-material interface dangerous singular stress concentrator, because of decrease of threshold values of applied loading necessary for crack propagation. Knowledge of crack propagation in protective film is of paramount importance when studying potential failure of the substrate.
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Mediální prezentace veřejné zeleně v Českých Budějovicích (obsahová analýza jihočeského regionálního tisku)
Kušová, Drahomíra ; Těšitel, Jan ; Bartoš, Michael
Press is a part of mass communication providing the public with information and symbolic contents. It always reflects the supposed interest of the public in concrete problems and it mediates social control of the institutions which are responsible for the particular spheres. On the basis of the content analysis of the regional press in South Bohemia we can state that citizens do not perceive the problem of public greenery as urgent and thus this topic is not very frequent in the media. People mainly observe if public greenery is in good shape. The number of organisms to be encountered in urban environment by greenery users is not large according to the press.
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Use of distribution of tasks in construction company
Repoň, Patrik ; Fábry, Jan (advisor) ; Skočdopolová, Veronika (referee)
Bachelor thesis deals with distribution of tasks, which have utility in the construction company. The aim is to apply these distribution of tasks to problems with which the construction company often meets, and to reach an acceptable solution that will help to streamline production, save working time or financial recourses. Bachelor thesis is divided into two parts. The first part is a theoretical part, which presents problems in construction companies in general, as well as the application of different types of distribution of tasks. Furthermore, we face mathematical models of these tasks and with description of optimization software LINGO, which we will use to resolve them. In the practical part the distribution of tasks are applied to concrete problems and real data. The final part contains an overall assessment of the results.
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Environment in China - current state, problems and perspectives
Salačová, Aneta ; De Castro, Tereza (advisor) ; Neumann, Pavel (referee)
The problematics of the environment has been underestimated in China for a long time. This country has been developing with incredible speed in the last three decades. The price for such growth is the current state of the environment in China. The thesis is divided into three chapters. The goal of this thesis is to evaluate the current state of the environment in China and the development of the stance of the Chinese government towards the protection of the environment in the new millennium. In connection with the economic growth is analysed the dependence on air pollution and Chinese GDP. Last but not least are offered possible solutions and perspectives of the future development of air pollution in China.
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