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The development of self-compacting concrete with fast runs of strength and elasticity modulus
Skřivánek, Michal ; Hela,, Vlastimil (referee) ; Hela, Rudolf (advisor)
My bachelor thesis is about a development of self-compacting concrete. The main advantage of this method is a shorter duration of producing strength concrete and also modulus of elasticity. My analysis consists of describing self-compacting concrete properties, methods for speeding up the process of building strength concrete from less effective heating to using advanced concrete admixtures. Further, an important chapter about influence of concrete mixture composition on modulus of elasticity measurements and in-depth analysis of the SCC mixture composition. Theoretical part is ended by a summary of SCC properties in a fresh or hardened state – all experiment specifics are included. In order to deliver a shorter duration of producing strength concrete and modulus of elasticity in early stages of curing, every SCC mixture mentioned in practical part have been carefully created based on achieved theoretical knowledge with a goal to minimize the impact on rheology of concrete mixture.
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MSCR test in dynamic shear rheometer
Střasáková, Monika ; Coufalík, Pavel (referee) ; Kudrna, Jan (advisor)
The laboratory properties of bituminous binders in relation to permanent deformation are described in this bachelor‘s thesis. The principle and procedure of MSCR test will be explained in the theoretical part. The principle of empirical tests (needle penetration, elastic recovery and softening point) will be also described. The properties of four bituminous binders will be evaluated in practical part. The comparison of binders will be performed based on test results.
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Testing of binders of thermal insulations for specific applications on technical appliances
Maňák, Jan ; Kulísek, Karel (referee) ; Petránek, Vít (advisor)
This work focus on testing alcali-activated binders for thermal insulation which could be used for special industry devices. In the beginning of this work is presented example of thermal energy storage where these specific alcali-activated materials can be used. Ensuingly two construction with thermal energy storage tanks are mentioned. Most of the interest aims on ageing and rheological properties of alcali-activated binder. Some rheological methods are also discussed. In the end of this work is added practical experience.
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Flow properties of hyaluronan colloids
Gabrielová, Michaela ; Ptáček, Petr (referee) ; Pekař, Miloslav (advisor)
The purpose of this study is to zoom in implication of flow properties of hyaluronan colloids with respect to physiological role. In the first part I will introduce physical formulation and definition of flow properties and reology, process to its measurement and utilization. In the second part you can read about hyaluronic acid and colloids of its salts. In this part I will focus on first studies of hyaluronic acid throught its occurence to its chemical properties. Within this work I will try to demonstrate interconnection of both subjects.
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Development and assessment of selected properties of emulsion cosmetics
Kuchyňová, Jitka ; Souralová Popelková, Miriam (referee) ; Zemanová, Jana (advisor)
This bachelor´s thesis focuses on assessment of selected properties of emulsion cosmetic product called Soothing face mask, which is produced by SynCare company. Thesis is targeted on rheological properties of the product. Basic rheological properties were measured by Brookfield viscosimeter in experimental part of the thesis. Short part of the text is dedicated to thermic analysis field, which may provide some useful pieces of information for storage of products in cryogenic temperature and development of emulsion products with good cryogenic-temperature resistance. Chemical properties of Soothing face mask product are expressed by description of particular characteristics of cosmetic ingredients in the product.
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Stability of humic acids in production of eye drops
Lišková, Kateřina ; Mravec, Filip (referee) ; Bilerová, Helena (advisor)
Glykoaminoglykans are the biological active compounds, which significantly affect the physiological processes in living organisms from under low concentrations. Marked representative of this group is hyaluronic acid. It is linear polysacharid, whose primary structure is consists of D-glucuronic acid and N-acetyl-D-glucosamin linking by glycosidic bonds (13) and (14). It is occurring connective tissues, synovial fluids and vitreous humor too, in which forms system with unique rheological and optical properties. Except of human body is its concentration especially high in the cockscombs. Hyaluronic acid has very high ability to bonding molecules of water, increasing molecular weight a then viscosity of aqueous solutions too. This fact together with characteristic viscoelasticity and lubricating properties plays an important role in preserve of organism. Acid, but its salt too form basic component of compounds using in ophthalmic surgery. It is using in extraction of cataract, operation of glaucoma, implantation of crystalline lens and corneal grafting too. Aim of this bachelor work was a determination of stability of hyaluronic acid solutions along the production of eye drops. Main objective was using by rheological measurement detect the influence of addition polymers (PVP, PACA, PEOX, PEG, PUD, PEI) and different pH on stability, degradation aqueous solution of hyaluronic acid at sterilization in the steam autoclave respectively.
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Common topics of Science and Theology in high school education
ČANDOVÁ, Jana
In the introduction this thesis classifies different conceptions of the relationship between science and faith. Then, it focuses on common topics of natural science and theology in secondary education. It summarises and reflects the experience of teaching practice and deals with the practical options for Christian issues which the students are usually interested in. The topics are presented in relation to a specific high school curricula and sorted into three parts: Death and dysthanasia, Time and rheology, Deus vere ludens et homo ludens. Some practical examples and recommendation for teaching practice are also mentioned.
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