The work analyzes market of public relations in the Czech Republic in the period from 2013 to 2015 based on the available data. Data come from research for The Association of PR Agencies (APRA) and from the balance sheets of selected agencies. The main hypothesis says, there is a monopolistic competition on the Czech market of PR agencies, because there is homogenous product, a large number of agencies, no entry barriers and agencies don´t have market power. I tested the hypothesis by calculating the Concentration coefficient and the Herfindahl Hirschman Index. Both methods confirmed the main hypothesis of monopolistic competition in this market. Work also includes the TOP 10 of PR agencies in the Czech market according to turnovers. It shows that the largest agency in the 2013 was Bison & Rose and in 2014 and 2015 it was AMI Communications. I also compared the changes in income and in prices of services by agencies that are members of APRA. So I can say that between the period from 2013 to 2015 there was a 18% growth in income of agencies, which was caused by higher quality of orders and not by raising prices.

In my thesis I analyse the development of the banking system of Ukraine and the assessment of the concentration level of the banking system in conditions of crisis 2014-2015. The theoretical part is devoted to classification and causes of the banking crisis; also, it describes the historical aspects of crisis formation in Ukraine. The practical part is focused on the evaluation of the financial security level and macroeconomic situation in Ukraine. This part emphasises problems and the specifics of functioning of domestic banks. In addition, it considers the concentration level of the banking market. The analysis performed shows that the banking crisis is the result of accumulated macroeconomic imbalances of the past and present mistakes in the implementation of anti-crisis policy. Currently the efficient functioning of most domestic banks remains at insufficient level.

The thesis deals with the polarization of Czech media landscape after 2013 as a discursive construct. Our topic is the emergence of new media projects, responding to the takeover of MAFRA by Andrej Babis. Three of these are being discussed: Echo24.cz, Reportér and Neovlivní.cz. The thesis aims to describe the discourse of the alternative media, its own representation in current situation. The subject is based on several concepts. First of them is the theory of social responsibility, which is a strong social value despite being quite questionable. Then, we discuss the trend of media ownership concentration and the development of Czech media after 1989, which has come to important changes, such as the change of the overall model of media ownership and the polarization of the media landscape itself. The first part of the thesis serves as a contextual background for the critical discourse analysis. The analysis verifies the hypothesis as follows: Alternative media is defined in opposition to the mainstream and uses the arguments based on the principles of the social responsibility theory to represent its own position, goals and interests. As a result, we found out, that the new projects construct an opposition us versus them as independence versus oligarchization. At the same time, the principles of...

This work deals with the current topic of carrier systems. Since the biggest problem is the passage of hydrophobic drugs through the bloodstream, or through universal body barriers (eg blood-brain), it is necessary to chemically modify these carriers in order to be able to administer hydrophobic substances effectively. Based on a literature search, several systems are designed and subsequently studied, in which there is a presumption of possible use for carrier systems and at the same time they have biosurfactants incorporated in them due to their ability to solubilize hydrophobic molecules. The theoretical part of this work will describe the individual biosurfactants, the process of their production, their physicochemical properties, and the possibility of their use in carrier systems. At the same time, the individual carrier systems, the procedure of their preparation, the possibilities of their use are described, and their advantages and disadvantages are also compared. In the practical part, the screening of both individual substances and their mutual interactions, as well as methods used to study the emerging structures is then performed. The study of molecular interactions is primarily performed using the technique of dynamic light scattering. The next part describes the optimization of hydrogel formation with incorporated biosurfactants in their structure and then the formed gels are subjected to rheological and solubilization tests. The study of the internal structure of these gels is performed using a scanning electron microscope.

The study of protein and surfactant interactions is of great significance in a number of applications, such as the cosmetic, food or pharmaceutical industries and many others. However, they require further study due to their compositional complexity and the limitations of current analytical approaches. In this thesis, the cationic surfactant septonex in combination with two differently charged proteins lysozyme and bovine serum albumin under different physiological conditions (temperature, surfactant concentration, environment and others) was selected to study the interactions. Characterization of protein-surfactant interactions is a very important but challenging task, therefore it is essential to use appropriate approaches to explore the nature of these interactions. In order to unify the information to provide rational models, calorimetric methods (DSC, ITC) and dynamic light scattering were used. Isothermal titration calorimetry monitors the evidence for the formation of the system of the mentioned substances and information on aggregation behavior, differential scanning calorimetry characterizes the thermal stability of proteins and dynamic light scattering made it possible to monitor changes in particle size. Both proteins have been proven to interact with positive septonex, even if the lysozyme molecule is also positively charged. However, significant differences were found between the two proteins. From the obtained results it is evident that the identical charge of the protein with the surfactant has an effect on the intensity of the measurement, although all measured interactions showed an endothermic character.

This diploma thesis deals with a draft of wireless weather station, whose task is to measure basic values inside and outside the home. Measured variables are for example temperature, atmospheric pressure, relative humidity, wind speed and direction or concentration of carbon dioxide (CO2). These data will be transmitted to a web server for later processing. Possible technical solutions are described and the outcome is a designed printed circuit boards, which has been assembled and tested. Resulting system was tested in trial operation.

The diploma thesis deals with micro-fuels in drinking water sources and their subsequent removal. In the thesis mainly pesticides and pharmaceuticals are described. The reader is first introduced to the most common pesticides occurring in water and their consumption. Drugs are described in a similar context. In addition, there are practical studies on the occurrence, degradation and removal of micro-pollutants from water. The final thesis is a laboratory experiment dealing with the removal of salicylic acid from water by filtration through the filtration material Bayoxide E33 and activated carbon. The thesis describes the procedure and results of the experiment.

Tématem této práce je počítačové modelování organického elektrochemického tranzistoru (OECT). Pro vytvoření modelu bylo třeba vypočítat rozložení elektrického pole a koncentrace iontů elektrolytu. Výpočet byl proveden numericky pomocí metody konečných prvků. Bylo vypočítáno rozložení elektrického potenciálu na povrchu kanálu OECT, dále byly vypočítány změny vodivosti a výstupní proud OECT. Výpočty byly provedeny na osobním počítači pomocí komerčního softwaru COMSOL Multiphysics. Kvůli nedostatečnému výpočetnímu výkonu musel být model rozdělen na části a drasticky zjednodušen. Prezentované výsledky se liší od literatury, protože se nepodařilo správně modelovat saturaci tranzistoru. Odchylky od reálného chování OECT jsou pravděpodobně způsobeny zjednodušením modelu.

Biopolymer surfactant systems have been studied by using different physico chemical methods. As the biopolymer, it was chosen high (1400–1600 kDa), medium (250–450 kDa) and low (8–15 kDa) molecular weight sodium hyaluronate. Two cationic surfactants – cetyltrimethylammonium bromide (CTAB) and carbethopendecinium bromide (Septonex) were selected to provide polyelectrolyte complexes with oppositely charged hyaluronan. The critical aggregation concentration of the surfactant in the system was monitored by dynamic light scattering (Zetasizer Nano ZS). SEC-MALS method was used for the description of the conformation of sodium hyaluronate of different molecular weights and polyelectrolytes complexes hyaluronan surfactant after reaching the aggregation point. Isothermal titration calorimetry (ITC) was used to determine the critical aggregation concentration of the surfactant by monitoring the thermal changes accompanying the aggregation of the system. It was found out that the increasing molecular weight of hyaluronan in these systems decreases the critical aggregation concentrations and conversely.

The aim of the diploma thesis is to find out by measuring the production of carbon dioxide that man produces in various types of physical activity. Using the model, the goal is to simulate real carbon dioxide production for a type object and to design a way of automatic regulation, air supply and drainage to obtain better indoor environment (represented by carbon dioxide).