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The role of boron oxide in oxidative dehydrogenation of hydrocarbons
Stoklasa, Jan ; Rubeš, Miroslav (advisor) ; Grajciar, Lukáš (referee)
Hexagonal boron nitride appears to be a suitable catalyst for the oxidative dehydrogenation of hydrocarbons. With its high selectivity towards alkenes and low production of carbon monoxide and dioxide, this catalyst emerges as an ideal candidate for this process. Literature references indicates that a radical mechanism seems probable, as evidenced by the dependence on the reactor shape and catalytic volume. The exact mechanism is still under investigation, and the focus of this study is to describe the initial steps of the reaction and investigate poorly defined boron oxide (BOx) species. It has been found that during the reaction of the catalyst surface model with the O2H radical, two types of complexes are observed - dispersive and covalently bound. By monitoring the interaction energies, it was discovered that both types are energetically very close to each other, with a low barrier for transition between them. When the surface interacts with the propyl radical, only dispersive complexes were observed.
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Processes of planning investments and depreciation/ amortization in financial plan
Plašil, Radek ; Hlaváč, Jiří (advisor) ; Stoklasa, Jan (referee)
The final paper Processes of planning investments and depreciation/ amortization in financial plan will be focused on seeking to describe the most important processes, stages and relations in planning of investments. The investments will dominate because of the fact that the depreciation and amortization are determined by real investment decisions. According to this, depreciation and amortization only illustrate the investment decision which has been already made by the company before. The main target is to compare the differences and relations between financial planning for the purposes of the company and the business valuation. At the beginning are defined two different points of view which are called the macroeconomic and microeconomic view. After that separated financial plans will be mentioned from the view of their users depending on their requirements. The main part will not be based only on the investments in companies, different stages and related tasks but also on the financial view and coordination between all the processes which is very important to succeed. The last part will be written in a co-operation with producing company. It should sum the theoretical part up and emphasize it on the real project.
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Factors influencing the financial situation of Ph.D. students in the Czech Republic
Zahradníčková, Jana ; Vltavská, Kristýna (advisor) ; Stoklasa, Jan (referee)
Ph.D. students are an integral part of the tertiary education system. Encouragement for doctoral programs and their students is very important because they are the ones who will participate in research projects in the future and they will contribute to society as a whole. The majority of scholarships for Ph.D. students comes from public sources. An important question to be asked is whether the scholarships are sufficient to finance Ph.D. studies and whether there are differences in the amount depending on gender, field of study or region. This thesis aims to answer these questions by applying statistical methods to the results of the survey DOKTORANDI 2014.
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