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Deformation measurement of turbocharger nozzle ring under temperature load
Kovářová, Lucie ; Žatko, Miroslav (referee) ; Dlugoš, Jozef (advisor)
The thesis is about deformation measurement of the nozzle ring in variable nozzle turbine mechanism under temperature load. In the first part, there is a brief description of the turbocharger. In the second part, methods of deformation measurement are mentioned there. The main part of the thesis includes component testing of selected measuring methods and their application for measuring deformation of the nozzle ring on the turbocharger. Test is done on a gas stand which simulates the thermal load conditions of the turbocharger, same which is exposed to on the engine.
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Ověření vlivu rozpustných fenolických látek na aktivitu extracelulárních enzymů v rašeliništích
KOVÁŘOVÁ, Lucie
The aim of the study was to verify the influence of the soluble phenolic compounds on the activity of extracellular enzymes. We tested the effect of aerobic and anaerobic conditions and addition of soluble phenolic compounds on potential activity of extracellular enzymes in two laboratory experiments. The results showed, that potential activities of oxidative extracellular enzymes such as phenol oxidase and peroxidase did not decline in anaerobic incubations, and have no oxygen requirement. Potential activities of hydrolytic enzymes was not inhibited by phenolic compounds and are oxygen related or have no oxygen relationship. No negative relationship between hydrolytic enzymes and phenolic compounds was observed. In summary, our results do not support the ''enzymatic latch'' hypothesis.
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Složení a funkce mikrobního společenstva v rašeliništích a jeho změny vlivem odvodnění
KOVÁŘOVÁ, Lucie
This bachelor thesis summarizes current knowledge about microbial community composition and function in peatlands with an emphasis on important function guilds of microorganisms and the changes in microbial community structure due to drainage. The thesis includes a project proposal to study microbial community composition among different peatland types and the evaluation of restoration success using microbial community composition determination.
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Multicomponent Analysis
Kovářová, Lucie ; Kubíček, Vladimír (advisor) ; Drastík, Martin (referee)
Charles University in Prague, Faculty of Pharmacy in Hradec Králové Department of Biophysics and Physical Chemistry Candidate: Lucie Kovářová Supervisor: Ing. Vladimír Kubíček, CSc. Title of Diploma Thesis: Multicomponent analysis This diploma thesis deals with the determination of concentrations of individual dyes in mixtures by multicomponent spectrophotometric analysis. The method was tested on selected dyes which were divided into two groups. The first group contains methyl orange, methyl red, orange II and phenol red. The second group consists of methylene blue, bromocresol green and thymol blue. Within each group mixtures were prepared containing combinations of two, three and four dyes in various ratio. Spectra of prepared mixtures were measured by diode array UV/VIS spectrophotometer. Absorbance values were read at wavelengths of absorption maxima of the individual dyes. Using the pseudoinverse matrix, concentration ratios of components were calculated from the absorbance values. The determination in determined and over determined systems was performed. On the basis of the results obtained by the method of analysis it is possible to determine the individual concentration of the multi-component dyes mixtures without prior separation. Keywords: spectrophotometry, multicomponent analysis,...
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Solid speciation of metals in tropical soils highly polluted by copper metallurgy
Kovářová, Lucie ; Ettler, Vojtěch (advisor) ; Vítková, Martina (referee)
Six soil samples corresponding to selected horizons (both topsoil and subsurface layers) from the forested and unforested soil profiles located in the vicinity of Mufulira Cu-Co smelter in the Copperbelt Province (Zambia) were investigated, in order to describe binding of main metal contaminants (Cu, Co, Pb, Zn) to soil constituents with a special emphasis on solid phase speciation. Sequential extraction procedure (SEP), X-ray diffraction (XRD) and scanning electron microscopy coupled to energy dispersion spectrometry (SEM/EDS) were used in this study. The highest bulk concentrations were found in soil samples from grassland areas located 3.6 and 8 kilometers from the smelter (Cu: 12 600 mg/kg, Co: 42.4 mg/kg, Pb: 40.6 mg/kg, Zn: 65.2 mg/kg). Copper was found to be the most mobile contaminant, also present in elevated concentrations in the subsurface soil layers of highly contaminated profiles, with substantial amount bound in the exchangable chemical fraction (19.3-25 mg/kg, 21-30 % of bulk Cu concentration). Besides the presence of lithogenic minerals, anthropogenic phases originating from mining and smelting activities were also observed in the heavy mineral soil fraction. These anthropogenic particles enriched in Cu or Co were identified by SEM/EDS as Cu-(Fe) oxides or sulphides of variable...
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Conatimanation of vineyards soils by Cu
Kovářová, Lucie ; Mihaljevič, Martin (advisor) ; Komárek, Michael (referee)
The aim of this bachelor thesis is to resume existing knowledge regarding the contamination of vineyard soils with copper, which is mainly caused by a long-term application of Cu-based fungicides used to control wine downy mildew (Plasmopara viticola). The role of Cu as a trace element in the natural environment is discussed, as well as natural Cu contents in soils and in the Earth's crust. This manuscript is based on international scientific articles focusing on the above mentioned subject. The thesis discusses the problems of contamination of vineyard soils by Cu, deposition of Cu compounds into the soils, interaction of Cu with soil components and possible formation of mobile or immobile Cu soil forms, their behavior and factors influencing this behavior and possible environmental risks e.g. phytotoxicity, contamination of water bodies or contamination of fluvial sediments. Additionally, average Cu contents in agricultural soils in Europe and worldwide were compared with European and international guidelines and limits. Total Cu contents in some of the vineyards soils exceed legislative regulations and in case of further utilization of such soils, an additional analysis would be necessary. Key words: contamination, copper, vineyard soils, heavy metals
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Jörg Haider and Austria Far Right
Kovářová, Lucie ; Charvát, Jan (advisor) ; Jeřábek, Martin (referee)
The barcherlor thesis "Jörg Haider and austrian far right " deals with the assumptions of political success of Jörg Haider as the leader of Austrian Freedom Party. From 1986 when Haider was elected as chairman to 2000 when the FPÖ became the member of coalition, the election result has been increased from 9,7% to 26,9%. In order to undestand this changing of voter's preferences are concidered the theories of far right and populism. This thesis discusses the assumptions of the political potential for increasing election results of the far right in Austria. There are concidered the facts how has the Austrian society been changed in the last half of the century including the general development in the Western Europe involving the theory of the sillent counter-revolution. There is analysed the role of Haider as the charimatic leader and the development of the austrian far right after his death and points out the topics of continuing populism.
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Legal Aspects of Consumer Credit Protection
Kovářová, Lucie ; Švestka, Jiří (referee) ; Salač, Josef (referee)
The main aim of the thesis is to analyze present legal regulations of consumer credit with respect to the present practice of courts and the practice of credit providers. For this purpose I use the analytical method, the descriptive method and the comparative method. The thesis itself is divided into nine closely related parts. The beginning of my thesis deals with general questions. The first chapter gives general comment on credits. The second chapter focuses on the most important legal rules related to the topic. This is especially The Commercial Code, The Civil Code and the laws on consumer credit. The section 262, subsection 4 of The Commercial Code is of the particular importance. The chapter three looks at the implementation of the Directive 2008/48/ES, which has been adopted in the Czech environment as the law on consumer credit (145/2010 Coll.). This law will replace from the 1st January 2011 the law 321/2001 Coll. which regulates the consumer credit nowadays. The main part of the thesis is focused on the process of entering into the contract and the necessary requirements which are imposed on the contracts by the Commercial Code and by the laws on consumer credit: 145/2010 Coll. and 321/2001 Coll. The chapter five deals with the means of security. The emphasis is put on practical...
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Jörg Haider and Austria Far Right
Kovářová, Lucie ; Charvát, Jan (advisor) ; Jeřábek, Martin (referee)
The barcherlor thesis "Jörg Haider and austrian far right " deals with the assumptions of political success of Jörg Haider as the leader of Austrian Freedom Party. From 1986 when Haider was elected as chairman to 2000 when the FPÖ became the member of coalition, the election result has been increased from 9,7% to 26,9%. In order to undestand this changing of voter's preferences are concidered the theories of far right and populism. This thesis discusses the assumptions of the political potential for increasing election results of the far right in Austria. There are concidered the facts how has the Austrian society been changed in the last half of the century including the general development in the Western Europe involving the theory of the sillent counter-revolution. There is analysed the role of Haider as the charimatic leader and the development of the austrian far right after his death and points out the topics of continuing populism.
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Evalution of the Financial Situation in the Firm
Kovářová, Lucie ; Ing.Jaroslav Vaňous (referee) ; Kocmanová, Alena (advisor)
Bachelor thesis is focused to evaluace the performance of the Zemědělské družstvo se sídlem ve Sloupnici. The aim of this work is to provide the financial analyse of this cooperative during the time period starting 2008 to 2010. The theoretical part is devoted to the financial analyse. It deals with the information sources, phases and finanacial analysis methods and with particular indicators calculations. The practical part consists of cooperative description, the financial analyse of the financial results and summary financial situation of the company. in conclusion are mentioned possible solutions of the problems of the cooperative. There are used the vertical and horizontal analyses, flow and proportional indicatorst and bankruptcy and creditworthy models in the thesis.
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