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Investigation of portlandite carbonation using the in-situ X-ray diffraction analysis
Růžička, Lukáš ; Koplík, Jan (referee) ; Másilko, Jiří (advisor)
Thesis deals with carbonation of portlandite using in-situ X-ray diffraction analysis. The carbonation of portlandite progress in concrete structures and it is already quite widely discussed. It is responsible for corrosion and degradation of reinforced concrete elements, and thus its influence is perceived very negatively. The main goal of this work is to determine the ideal conditions for the progress of carbonation of portlandite. In this work the progress of carbonation depending on the relative humidity and temperature was observated. The amount of carbonated portlandite was evaluated by means of thermal analyzes (TG / DTA) and X-ray analysis.
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Proposal for the rationalization of assembly line for the heat exchanger sets
Růžička, Lukáš ; Kalivoda, Milan (referee) ; Kubík, Roman (advisor)
The objective of the thesis is rationalization of current process of assembling of manifold assemblies from the reduction of operating costs point of view. The reason for rationalization is uncompetitiveness of actual solution due to high manufacturing cost of manifold assemblies coming from this process. After analysis of current operations, taking into account presumed production plan, the capacitive calculation of assembly line was done. Then alternative solutions were proposed based on above mentioned criterion, and from these the optimal variant was picked and developed. The assessment of resultant solution was done in the end.
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Isolation of alkaloids of the species Geissospermum vellosii Allemão and study of their biological activity III.
Růžička, Lukáš ; Šafratová, Marcela (advisor) ; Hulcová, Daniela (referee)
Růžička, L. Isolation of alkaloids from Geissospermum vellosii Allemão and study of their biological activity. Diploma thesis, Department of pharmacognosy, Faculty of Pharmacy in Hradec Králové, Charles University, Czech Republic, 2020. The aim of this diploma thesis are alkaloids from Geissospermum vellosii. This tree native in South America is commonly used for treatment of various diseases, including cognitive deficits in elder people1 . The study is based on previous research that was focused on inhibition of human cholinesterases and glycogensynthase 3 β(GSK-3 β), which can be used in treatment of Alzheimer disease. Incidence of this disease is rising up in the last decades and it represents a big burden for both health service and economy of developed countries2 . Isolation was carried out from crude crushed stembark. After extraction and agitation, 50.4 g of thick yellowish ether extract was obtained. This extract showed activity against cholinesterases (IC50 AChE = 15.19 ± 0.96 μg/ml and IC50 BuChE = 0.37 ± 0.049 μg/ml). Later, this extract was separated to 16 fractions by column chromatography. Fraction GV9 was chosen for additional research. Thin layer chromatography was carried out for purification and extraction of white crystalline alkaloid. Structure was determined by...
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Children's attitudes to football and physical activities at the age of 9-10 years at selected clubs
Lanhaus, Jan ; Kaplan, Aleš (advisor) ; Růžička, Lukáš (referee)
Title: Children's attitudes to football and physical activities at the age of 8-11 years at selected clubs Objectives: The aim of this thesis was to find out the attitudes of children to football and physical activity at the age of 8-11 by means of an anonymous questionnaire survey in two intentionally selected clubs, including a comparison of the degree of agreement in individual attitudes. To achieve this goal, two questionnaires, a standardized PACEScz questionnaire and a non-standardized questionnaire designed for the needs of this work were used to find out more about respondents and their relationship and attitudes to football and football training. Methods To meet the goal of the thesis I have used the knowledge of the literature I studied dealing with the attitudes of children to physical activity and football and questionnaire survey of children aged 8-11 in two intentionally selected football clubs. With the help of relevant sources I chose and slightly supplemented the standardized PACEScz questionnaire and I also compiled an anonymous non-standardized questionnaire for the purposes of this work. Both questionnaires were distributed personally after each team's training unit. Due to the objectivity of the PACEScz questionnaire, I also had to draw up a template for the training unit...
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Monitoring of athletic preparation and its conditions applied by U7 age group football teams
Lanhaus, Jan ; Kaplan, Aleš (advisor) ; Růžička, Lukáš (referee)
Title: Monitoring of athletic preparation and its conditions applied by U7 age group football teams Objectives: This thesis is focused on monitoring of athletic preparation of some of pupils' football teams by using anonymous questionnaires filled up by U7 age group coaches. Six intentionally selected football clubs were studied as per their coaches and technical conditions, available time and space for athletic preparation including trainings for U7 age group. Methods While fulfilling the goals of the thesis, I draw from literary sources focused on children's athletic preparation and questionnaires filled up by U7 age group's coaches of six intentionally selected clubs. My not standardized questionnaire is based on theoretical outlets drawn from relevant literary sources and was distributed personally during U7 age group tournaments. While evaluating the answers, I focused on general and experimental questions separately. I sorted them into five different fields: available coaches, training sessions, their structure and content, available material background, the selected team-skeleton and the stress they have to undergo during individual matches or tournaments. Finally, I considered the obtained results and compared them between the clubs themselves as well as with the theoretical outlets I've...
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Investigation of portlandite carbonation using the in-situ X-ray diffraction analysis
Růžička, Lukáš ; Koplík, Jan (referee) ; Másilko, Jiří (advisor)
Thesis deals with carbonation of portlandite using in-situ X-ray diffraction analysis. The carbonation of portlandite progress in concrete structures and it is already quite widely discussed. It is responsible for corrosion and degradation of reinforced concrete elements, and thus its influence is perceived very negatively. The main goal of this work is to determine the ideal conditions for the progress of carbonation of portlandite. In this work the progress of carbonation depending on the relative humidity and temperature was observated. The amount of carbonated portlandite was evaluated by means of thermal analyzes (TG / DTA) and X-ray analysis.
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Proposal for the rationalization of assembly line for the heat exchanger sets
Růžička, Lukáš ; Kalivoda, Milan (referee) ; Kubík, Roman (advisor)
The objective of the thesis is rationalization of current process of assembling of manifold assemblies from the reduction of operating costs point of view. The reason for rationalization is uncompetitiveness of actual solution due to high manufacturing cost of manifold assemblies coming from this process. After analysis of current operations, taking into account presumed production plan, the capacitive calculation of assembly line was done. Then alternative solutions were proposed based on above mentioned criterion, and from these the optimal variant was picked and developed. The assessment of resultant solution was done in the end.
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Analysis of collective bargaining and collective agreements
Stará, Zuzana ; Šikýř, Martin (advisor) ; Růžička, Lukáš (referee)
Bakalářská práce pojednává o rozboru kolektivního vyjednávání a kolektivní smlouvy nejprve z teoretického hlediska a dále se zaměřuje na praktické zkoumání ve společnosti GCE, s.r.o. V teoretické části práce jsou specifikovány a charakterizovány klíčové oblasti problematiky kolektivního vyjednávání a kolektivní smlouvy vůbec. Praktická část analyzuje pomocí těchto tématických celků konkrétní skutečnosti a jevy ve společnosti GCE, s.r.o., kde působí příslušná odborová organizace.
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