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Study of seasonal changes of water quality in Vír reservoir
Navrátilová, Martina ; Dolejš, Petr (referee) ; Chocholáčová, Hana (advisor)
Thesis deals with measuring of chosen indicators of water quality in Vír reservoir (temperature, pH, colour, turbidity, fluorescence of fykocyanin, concentration of chlorofyl-a, pheopigments, microcystin-LR, orthophosphates, nitrates, etc.). Samples were taken from the sampling profiles 10, 30 a 50 metres from absolute level and in the season from May to October was direct in reservoir measured a vertical profile by a multifunction sonde YSI 6600.
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Development and Validation of Novel HPLC Methods for the Determination of Specific Analytes in Biological Material.
Urbánek, Lubor ; Solich, Petr (advisor) ; Karlíček, Rolf (referee) ; Nobilis, Milan (referee)
1. SUMMARY The presented dissertation thesis shows an interesting connection of two research fields that seem totally different from the first sight: analytical chemistry and medicine. However, the second sight could show that both branches might exist very closely to each other and their cooperation can be even useful for both sides. The initial part of the thesis deals with theoretical basics of HPLC and chromatographic instrumentation bringing a short overview of important principles of liquid chromatography including a brief introduction of crucial parts of an HPLC instrument. Due to the fact that the heart of the chromatographic system is an analytical column, another part of the text deals with different types of stationary phases and analytical sorbents. A separate chapter is focused on monolithic columns and other materials representing a new and original trend of chromatographic techniques. The main advantages and disadvantages of monolithic columns are then summarized in the published papers listed in the Experimental part (Enclosures 1, 2 and 9). Finally, the technical section of my thesis is concluded by a review of new trends in the chromatographic instrumentation presented e.g. by Ultra Performance Liquid Chromatography, columns filled with sub-2-micron particles or automatization or...
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Interpetation of Information - Specific case study
Pithart, Josef ; Toman, Prokop (advisor) ; Sigmund, Tomáš (referee)
This thesis focuses on the interpretation of information on the state budget deficit of the Czech Republic and the national debt from 2000 to 2008. Explores ways of interpreting by official institutions, namely the Czech Statistical Office and The Ministry of Finance of the Czech Republic, then the interpretation of the representatives of political parties and last, journalists and analysts. This thesis aims to compare different interpretations of, the above mentioned entities, and refer to completely different interpretations of the same possibilities of quantitative data. Way of achieving the goals of this work is to analyze of published information on the state budget deficit of the Czech Statistical Office, and then to compar with the data used in their analysis of selected representatives of political parties, journalists and analysts. Contribution to the work of interpretations about the development of the state budget deficit is to highlight the fact that, despite the same initial quantitative data, the interpretation of different entities differs vastly. Another contribution of this work is to identify the causes of these differing interpretations, and enable them to defend the dubious interpretations.
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Design of a space heating system with a heat pump air-water and solid fuel source for heating the family house
Španihelová, Kateřina ; Elcner, Jakub (referee) ; Katolický, Jaroslav (advisor)
The aim of this thesis is to design the heating system for the house, including the design and calculating the required quantity of heat for hot water. The specified heat sources are the heat pump air to water and solid fuel boiler. The task was to design the heating system to the fastest possible return on investment. The initial investment in a heat pump is high so it is necessary to design the heating system as efficiently as possible. The thesis contains a complete project of calculating heat loss of the building, the design of heating surfaces and their heat-technical calculation. There is included the design of the pipe system, the calculation of pressure loss and its regulation. The thesis also includes design of safety equipment, temperature regulation and drawings. On the basis of calculated data was processed economic assessment, which determines the return on investment to the heat pump. Compared to the gas condensing boiler the return on investment will ideally be after five years.
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The Study of Polyolefins Photochloration
Kučera, Vladimír ; Tocháček, Jiří (referee) ; Petrůj, Jaroslav (advisor)
This Master´s thesis deals with heterogeneous photochlorination of polyolefins and especially with the photochlorination of polypropylene itself. In the theoretical part the available information about properties, manufactory and application of chlorinated polyolefins, specifically polyethylene and polypropylene, is provided. The basic principles of the photochemistry are described, which are further applied to the issue of photochemistry chain reactions and photochemical halogenations, mainly photochlorinations. The practical part includes design and realization of few types of equipment for the heterogeneous photochlorination of polypropylene done at low temperatures (to 50° C) by gaseous chlorine in bulk or chlorine suspended in suspension of PP in CCl4. Series of chlorination was accomplished, which was varied in the type of PP, in the way of dosage Cl2 and in the period of high pressure mercury lamp irradiation (1–90 minutes). The chlorine content in prepared samples was determined by the gravimetry with ATR-FTIR spectroscopy, as well as by the Shöniger combustion method. Their accuracies were than compared. The chlorine content dependence on the period of chlorination and on the porosity of initial PP was established.
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Building control system
Nekula, Vít ; Valach, Soběslav (referee) ; Bradáč, Zdeněk (advisor)
The thesis is about designing a house control system which works as decentralized device. Initially, a brief market research in field of intelligent electro installation was made. On the basis of gained knowledge the whole concept of the system was designed – a control unit, a weather station and a temperature control unit. Each part communicates with each other wirelessly. A complete electronic design of circuit boards is a part of the thesis. The board were afterwards produced and assembled. Then a communication protocol and a complete implementation of all system functions were made. Next part of the thesis is a design and a programming of a web interface which is used to control the entire system. The final part of the thesis is about measuring a quality of communication between single units.
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Synthesis of Mineral Oils by Oligomeration of 1-alkenes
Porubský, Tomáš ; Kučera, František (referee) ; Petrůj, Jaroslav (advisor)
The theoretical part presents a summary of existing information and procedures for the oligomerization of 1 alkenes. It also introduces suggestion of the new method for preparing poly(1-hexene) by controlled or living polymerization with nitroxyl radicals. In the experimental part was synthesized oligomer of 1-hexene with DBP or AIBN radical initiators and coordination Ziegler-Natta catalysts, which consisted of TiCl4 and organometallic compounds TIBA or TNHA. GC/MS analysis of the radical polymerization reaction mixture, showed no oligomer formation even after 6 hours. Effect of Ti/Al ratio, temperature and type of organoaluminium compund on conversion and molecular weight were investigated. Reaction products were analyzed by 1H NMR and GC/MS spectrometry. Results showed that the obtained oligomer was a mixture of oligomers with a degree of polymerization 2-9 and average molecular weight of 220-270 g/mol. Monomer conversion reached values of 72 98 %.
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Different reaction of cultivars poppy seeds after nonthermal plasma treatment
Banulescu, G. ; Gajdová, Iveta ; Šerá, Božena ; Kuchtová, P. ; Šerý, M. ; Špatenka, P. ; Hnatiuc, E.
The influence of low-temperature atmospheric plasma treatment generated between the electrodes (GlidArc) on poppy seed growth was tested. Treatment times were 0 s, 180 s, 300 s, and 600 s. Working gas was air. We monitored germination and initial growth of two cultivars of poppy seeds (Papaver somniferum L., cultivars Major and Orfeus). The values of control measurements (exposure time 0 s) of the tested cultivars were different. Therefore we analysed both cultivars separately with adequate control during the data procesing. A positive influence was found mainly in the lengths of sprouts in cultivar Major (22 %, time 180 s). The number of germinated seeds was not affected by plasma treatment in both cultivars.
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Comparison of the performance of the parental combination of geese ESKILDSEN SCHWER and their progeny during three laying cycles
ZIGÁČEK, Ladislav
Abstract The aim of the bachelor thesis was to compare the production traits of goose parental combination ESKILDSEN SCHWER and their progeny obtaining from the poultry performance testing during three laying cycles. The tests were made by International Poultry Testing Station in Ústrašice and methodology was based on the guidelines for the implementation of poultry performance testing. Parental test consisted of rearing parents until the age of 210 days, the laying preparation period of 211?285 days, the rearing period at duration 160 days and from two fattening progeny tests lasting for 56 and 112 days. Higher live weight at 1 day, 56 day and 210 days of age during parental test was found out at gangers compare to geese. The higher number of eggs in the initial stage (66.3 eggs) and number of hatched goslings (46.4 heads) were found out at two-year-old geese. The above-average temperatures in May caused premature drop of lying at three-year-old geese. The highest breast muscle weight (430 g) at 1st fattening progeny test at 56 days of age was at three-year old geese. It was only about 14 g higher in comparison with progeny of two-year-old geese and about 30 g higher in comparison with one-year-old geese. The highest weight of breast muscle was found out at three-year-old geese at the 2nd fattening progeny test too (493 g), followed by progeny of two-year-old geese and one-year-old geese. The highest weight of breast muscle (671 g) was found out at 112 days of age at the 1st fattening progeny test at three-year-old geese. The lowest weight was at progeny of two-year-old geese. The highest breast muscle weight (746 g) was achieved at progeny of three-year-old geese at the 2nd fattening progeny test. They were followed by one-year-old geese and two-year-old geese.
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