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Stress-strain analysis of the Gbely drilling tower
Vizváry, Peter ; Kovář, Jaroslav (referee) ; Fuis, Vladimír (advisor)
The content of the bachelor's thesis is focused on the stress-strain analysis of a drilling tower located in Gbely. Its main goal is to compile equations of static equilibrium for the analytical solution of the structure and its subsequent numerical verification using the created 3D computational model based on various static loads or changes in the degree of static determinacy. The first part of this work summarizes the theory of the bar and of bar systems, the basic limit states and the finite element method (FEM). The second part contains a search on the history of oil production in Slovakia, its discoverer and the development of deep drilling and production technologies. The third part describes the drilling tower in Gbely. The content of the fourth part is the creation of a 3D computational model of a real structure, which should represent the drilling tower as accurately as possible. The most comprehensive is the fifth part, which consists of the design of a simplified structure, writing the equations of static equilibrium for the analytical solution, creating a 3D computational model for numerical verification of the analytical solution and evaluating the conclusions to which the individual variants of the solution led.
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Optimalization of the extraction of bioactive compounds from herbs into different kind of oil bases
Chytil, Dalibor ; Zemanová, Jana (referee) ; Pořízka, Jaromír (advisor)
This diploma thesis deals with the optimization of processes for extraction of bioactive lipophilic compounds from fruits of sea buckthorn (Hippophae Rhamnoides) into various types of plant oil bases using simple maceration. The theoretical part of this thesis deals with the characterization of this herb, its botanical classification, traditional use, chemical composition and medicinal effects. Increased attention is also paid to the characterization of individual types of plant oils used, namely camellia, camellia organic, passionflower, kukui and kiwi oil. The experimental part of the thesis deals with application of theoretical knowledge. The profile of total and free fatty acids for individual plant oil bases was determined by GC/FID, furthet the basic fat numbers were also determined. When optimizing the extraction, emphasis was placed not only on the effect of the extraction agent used, but also on the extraction time (1, 3, 5, 7, 10, 14, 21 and 66 days). The macerates were continuously subjected to the determination of selected parameters (total amount of carotenoids, total amount of phytosterols, lutein, neoxanthin, astaxanthin, stigmasterol, -sitosterol and vitamin E) using UV-VIS spectroscopy and HPLC/PDA. Likewise, the peroxide number was monitored during maceration to assess the degree of oxidative degradation of macerates. The recovery of selected total parameters in individual oils did not differ significantly in most cases. On the contrary, the yield of individual monitored parameters differed significantly. At the same time, static maceration under our conditions was not very suitable for the extraction of vitamin E, stigmasterol and total phytosterols.
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Optimalization of the extraction of bioactive compounds from herbs into different kind of oil bases
Chytil, Dalibor ; Zemanová, Jana (referee) ; Pořízka, Jaromír (advisor)
This diploma thesis deals with the optimization of processes for extraction of bioactive lipophilic compounds from fruits of sea buckthorn (Hippophae Rhamnoides) into various types of plant oil bases using simple maceration. The theoretical part of this thesis deals with the characterization of this herb, its botanical classification, traditional use, chemical composition and medicinal effects. Increased attention is also paid to the characterization of individual types of plant oils used, namely camellia, camellia organic, passionflower, kukui and kiwi oil. The experimental part of the thesis deals with application of theoretical knowledge. The profile of total and free fatty acids for individual plant oil bases was determined by GC/FID, furthet the basic fat numbers were also determined. When optimizing the extraction, emphasis was placed not only on the effect of the extraction agent used, but also on the extraction time (1, 3, 5, 7, 10, 14, 21 and 66 days). The macerates were continuously subjected to the determination of selected parameters (total amount of carotenoids, total amount of phytosterols, lutein, neoxanthin, astaxanthin, stigmasterol, -sitosterol and vitamin E) using UV-VIS spectroscopy and HPLC/PDA. Likewise, the peroxide number was monitored during maceration to assess the degree of oxidative degradation of macerates. The recovery of selected total parameters in individual oils did not differ significantly in most cases. On the contrary, the yield of individual monitored parameters differed significantly. At the same time, static maceration under our conditions was not very suitable for the extraction of vitamin E, stigmasterol and total phytosterols.
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Stress-strain analysis of the Gbely drilling tower
Vizváry, Peter ; Kovář, Jaroslav (referee) ; Fuis, Vladimír (advisor)
The content of the bachelor's thesis is focused on the stress-strain analysis of a drilling tower located in Gbely. Its main goal is to compile equations of static equilibrium for the analytical solution of the structure and its subsequent numerical verification using the created 3D computational model based on various static loads or changes in the degree of static determinacy. The first part of this work summarizes the theory of the bar and of bar systems, the basic limit states and the finite element method (FEM). The second part contains a search on the history of oil production in Slovakia, its discoverer and the development of deep drilling and production technologies. The third part describes the drilling tower in Gbely. The content of the fourth part is the creation of a 3D computational model of a real structure, which should represent the drilling tower as accurately as possible. The most comprehensive is the fifth part, which consists of the design of a simplified structure, writing the equations of static equilibrium for the analytical solution, creating a 3D computational model for numerical verification of the analytical solution and evaluating the conclusions to which the individual variants of the solution led.
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Environmental aspects of oil extraction - selected issues
Zilvar, Adam ; Němcová, Ingeborg (advisor) ; Horák, Jiří (referee)
The main objective of this bachelor thesis is to discuss the possibilities of state to regulate the operations of multinational oil corporations and compare them in terms of developed and developing countries. It focuses also on self-regulation of multinational oil companies. The first chapter describes multinational corporations in general. The second chapter includes information about Nigeria, its oil industry, the extent of oil pollution, the role of state in the regulation of multinational oil companies and also about approach of these companies to self-regulation. The third chapter contains information about the USA, its oil industry and the extent of oil pollution. It also describes the approach of federal government of the USA and U.S. states to oil pollution.
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