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Analysis of the life service of PVC roofing foils
Rosecký, Pavel ; Žák,, Antonín (referee) ; Žižková, Nikol (advisor)
Roofing foils are known for several years as building material for roof hydro insulation but their life service is not yet fully known. This thesis is focused on problematics of life service of roofing foils. In theoretical part there is discribed structure of foils and impacts which assist degradation processes. Practical part modifies the methodology artificial aging which is simulated in QUV tester and Q-SUN XE3 tester lumber-rooms. The thesis is trying reach with the results to natural aging as close as possible. The testing captures attributes which are more prone to degradation.
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Analysis of the life service of PVC roofing foils
Rosecký, Pavel ; Žák,, Antonín (referee) ; Žižková, Nikol (advisor)
Roofing foils are known for several years as building material for roof hydro insulation but their life service is not yet fully known. This thesis is focused on problematics of life service of roofing foils. In theoretical part there is discribed structure of foils and impacts which assist degradation processes. Practical part modifies the methodology artificial aging which is simulated in QUV tester and Q-SUN XE3 tester lumber-rooms. The thesis is trying reach with the results to natural aging as close as possible. The testing captures attributes which are more prone to degradation.
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Origins of vertebrate hematiopoiesis
Svoboda, Ondřej ; Bartůněk, Petr (advisor) ; Divoký, Vladimír (referee) ; Živný, Jan (referee)
(ENGLISH) Hematopoiesis is dependent on the actions of hematopoietic stem cells (HSCs). This process is tightly controlled through a complex array of extrinsic and intrinsic factors. Even though the hematopoiesis seems to be well conserved across the disparate vertebrate animals, erythroid and thrombocytic differentiation have changed during the evolution of mammals. Specifically, adult mammalian red blood cells have the unique feature of being enucleated, and mammalian thrombocytes are not individual cells, but fragments of megakaryocytes, instead. It is likely that these enhancements provided a survival advantage to early mammalian species; however, they also bring up the question of evolutionary origin of these cells that studied using zebrafish (Danio rerio) model. First, it was necessary to generate a toolbox of a recombinant cytokines and optimized culture media that allowed us to manipulate zebrafish hematopoietic cells ex vivo in liquid and clonal cultures. Interestingly, teleost species underwent an extra duplication event during their evolution and as a result, two copies (paralogs) of some of the genes are present in zebrafish. This was also the case for majority of the cytokines from our toolbox and here, we provide functional characterization of these paralogs. Strikingly, our results...
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Comparison of Export Support Systems in Austria and the Czech Republic
Zbranková, Lenka ; Král, Petr (advisor) ; Vokáč, Matěj (referee)
This master's thesis deals with the comparison of export support systems in the Czech Republic and Austria. In the first chapter, the terms "export support" and "export credit agencies" are defined and instruments of export supporting policies as well as their positive and negative aspects are listed and EU regulation and policies in this field are briefly described. A short description of the Czech Republic and Austria follows. Special attention is paid to the following analysis of export strategies and export credit agencies in both economies. This descriptive theoretical part is complemented by a practical case study carried out in cooperation with TOSHULIN, a.s. -- a successful producer and exporter of machinery. Both systems of export support are evaluated from the point of view of the company's sales department. The thesis concludes with an evaluation of the topic, a comparison of the effectiveness of both export support systems, and the author's suggestions for potential innovation and improvement in this area.
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