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Design of asphalt mixtures with the use of higher amount of RAP
Pavličík, Petr ; Matoušek, David (referee) ; Varaus, Michal (advisor)
In the introduction of the Master’s thesis describes for obtaining and processing of reclaimed asphlalt. Major point of the thesis is design of asphalt mixtures with use of higher amount of RAP for asphalt binder course. Asphalt mixtures were designed with contents of 0%, 30%, 50% and 70% of RAP. On each asphalt mixtures were compared parameters set out by functional tests – resistence to permanent deformation and resistence to water.
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Resistance of bituminous binder to ageing
Rous, Vojtěch ; Frýbort, David (referee) ; Kudrna, Jan (advisor)
Asphalt binder ageing and experiences with various ageing methods from abroad are described in this thesis. The practical part deals with the RTFOT aging and with the influence of the duration of this test. The comparison of test results is conducted before and after the aging by values of needle penetration, elastic recovery, softening point and resilience tests are evaluated and compared.
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The penetration features of the hydrofobized hyaluronic acid – based polymeric micelles.
Mischingerová, Monika ; Pekař, Miloslav (referee) ; Muthný, Tomáš (advisor)
The aim of this thesis was to investigate the penetration features of the hydrofobized hyaluronic acid – based polymeric micelles using Nile red as carried tracer. Furthermore, to implement basic characterization of polymeric micelles for potential cosmetic applications using Coenzyme Q10 (CoQ10) as carried substance. It was found that the size of the polymeric micelles with carried CoQ10 did not exceed 100 nm. Applied delivery systems based on hydrophobic hyaluronic acid were suitable for potential topical application. Delivery systems with Nile Red as carried tracer demonstrated excellent penetration features. We assume that delivery systems with CoQ10 will exhibit similar penetration features. An issue has appeared whether the carrier breaks or proceeds along with NR to the skin. Moreover, another experiments have been designed which could also verify the penetration features of these systems.
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Study on dependency of the weld geometry on process parametres in laser hybrid welding of austenitic stainless steel
Jireš, Daniel ; Daněk, Ladislav (referee) ; Mrňa, Libor (advisor)
The project has been solved during the bachelor´s degree of engineering technology examines the the influence of laser hybrid welding austenitic stainless steel ČSN 17240 (DIN 1.4301). This steel is the most widely used type of stainless steel, recommended for use in aggressive environments such as a swimming pools, laboratories or facilities in contact with sea water. The test specimens, which were performed on the weld bead at different speeds and other welding parameters, were metallographicly investigated. The results showed that the highest geometric parameters such as depth and width of the weld pool have the samples with welding speed v = 10 mm s-1, the smallest geometrical parameters have the samples with the welding speed v = 30 mm s-1.
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Optimalization of experimental method for study on penetration of humic acids into leaves.
Smilková, Marcela ; Pekař, Miloslav (referee) ; Sedláček, Petr (advisor)
This bachelor’s thesis is focused on the study of penetration of humic substances trough the plant cuticle. The main objective of the thesis aimed at a literature search on foliar fertilization and transport of substances in the plant leaves. According to the literature search, experimental technique was suggested and tested in order to study penetration of humic substances through the leaf cuticle. The method consists of observation of diffusion transport of humic acids between two inert agarose gels separated by the plant cuticle. Cuticles were prepared by the means of three different isolation procedures.
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Global FTTx market
Beníšek, Jan ; Šalamon, Tomáš (advisor) ; Pešek, Martin (referee)
This master thesis focuses on the worldwide optical connection situation.Within the respective regions of Asia-Pacific,the Americas and Europe, it identifies the main countries and focuses on the situation and share of FTTx subscribers in them.It tries to answer the question of what technologies are represented the most on particular markets. Within each country,two service providers are chosen and their offer analyzed.For an overview,the price offer for an Internet connection with the highest transmission rate and the price for VoIP service are provided. The analytical part uses the obtained data from individual countries and regions for a price comparison and market forecast.The price comparison deals with the price level of a standard connection in relation to GDP per capita in PPS.This comparison enables the discovery of how expensive the Internet connection via FTTx is in a particular country.Furthermore, the analytical part, in relevant countries, focuses on the calculation of the ratio of costs for the yearly use of a FTTx subscription in relation to the disposable family income. The highest ratio-8.37%-was recorded in India. The thesis also includes a market forecast in the horizon of the end of 2009 and 2010 for the most important countries.For each country,the main growth factor is identified and subsequently the development for the entire year 2009 and 2010 is forecast.The worldwide forecast is 61.37 million (as of the end of 2009) and 72.67 million (as of the end of 2010) FTTx subscriptions.The contribution of this master thesis is the analysis of in what state of development the market of Internet optical connection is in the most important countries, with price comparisons and a market forecast constituting further contributions.
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