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The present work characterizes a submerged aerated hollow fiber polyvinylidene fluorid (PVDF) membrane (0.03 μm) device (Harvester) designed for the ultrafiltration (UF) of microalgae suspensions. Commercial baker's yeast served as model suspension to investigate the influence of the aeration rate of the hollow fibers on the critical flux (CF, J$_{c}$) for different cell concentrations. An optimal aeration rate of 1.25 vvm was determined. Moreover, the CF was evaluated using two different Chlorella cultures (axenic and non-axenic) of various biomass densities (0.8–17.5 g DW/L). Comparably high CFs of 15.57 and 10.08 L/m/$^{2}$/h were measured for microalgae concentrations of 4.8 and 10.0 g DW/L, respectively, applying very strict CF criteria. Furthermore, the J$_{c}$-values correlated (negative) linearly with the biomass concentration (0.8–10.0 g DW/L). Concentration factors between 2.8 and 12.4 and volumetric reduction factors varying from 3.5 to 11.5 could be achieved in short-term filtration, whereat a stable filtration handling biomass concentrations up to 40.0 g DW/L was feasible. Measures for fouling control (aeration of membrane fibers, periodic backflushing) have thus been proven to be successful. Estimations on energy consumption revealed very low energy demand of 17.97 kJ/m$^{3}$ treated microalgae feed suspension (4.99 × 10$^{-3}$ kWh/m$^{3}$) and 37.83 kJ/kg treated biomass (1.05 × 10$^{-2}$ kWh/kg), respectively, for an up-concentration from 2 to 40 g DW/L of a microalgae suspension.

This diploma thesis which is called Advertising literacy, theoretical concept and didactic application deals not only with the concepts of advertising and advertising literacy as such, but also focuses on advertising literacy more specifically for children and the possibility of developing this, very important, literacy. One part of this work deals with the function of advertising, the effects of advertising, the history of advertising and the psychology of advertising. An important part is also a section on advertising literacy and its components and possibilities for its development. In the practical part, this work presents proposals of activities, which can be used at schools´ education that will lead to the development of advertising literacy of students.

This thesis deals with microalgae mass cultures grown in laboratory as well as outdoor cultivation systems and a potential use of their biomass. Case studies illustrate the correlation of changes in growth rate with photosynthetic activity, physiological features and biomass composition under various conditions (high irradiance intensity, optimal/suboptimal temperature and the presence of some metalloids). The special attention was also paid to evaluation of the bioavailability of Se-enriched Chlorella biomass which is commonly used as a food supplement. As concerns methodology, photosynthesis monitoring techniques, namely chlorophyll fluorescence were employed as an important tool to estimate microalgae activity.

This bachelor thesis is about epilepsy and about attitudes towards people with epilepsy and stigmatization from perspective of public. The theoretical part is divided to four chapters. The first one focuses on general clarification of terms which are related to epilepsy. In the chapter two there is analyzed psycho-social impact of epilepsy. The two following chapters deal with public attitudes towards the people who suffer from epilepsy and the connection between stigma and epilepsy. The practical part includes a research. This research was externalized using quantitative method in form of questionnaires and its aim was to find out the degree of stigmatization of people with epilepsy from the perspective of public and also to detect the public attitudes towards the people suffering from epilepsy.

Additional file 1: Fig. S1. Examples of rapid light-response curves of rETR recorded in Chlorella cultures on Day 1, 4 and 7 during the outdoor trials. Fig. S2. Examples of fast fluorescence induction kinetics (OJIP curves) recorded in Chlorella cultures on Day 1, 4 and 7 during the outdoor trials

The theoretical part of the Bachelor thesis summarizes the formation pathways of sulfur compounds in plants of the genus Allium and shows the similarity between "regular" garlic (Allium sativum L.) and "sweet" garlic (Tulbaghia violacea Harv.). In the experimental part, marasmicin was extracted from the rhizomes of T. violacea and allicin was synthesized from diallyl disulfide. Antimicrobial properties of both compounds were tested in two ways - by the disk diffusion method against several strains of bacteria and yeasts (Clavibacter michiganensis, Erwinia amylovora, Xanthomonas axonopodis, Bacillus cereus, Escherichia coli, Micrococcus luteus and Saccharomyces cerevisiae) and by dilution method against three strains of bacteria (Bacillus cereus, Escherichia coli and Micrococcus luteus).

The present work characterizes a submerged aerated hollow fiber polyvinylidene fluorid (PVDF) membrane (0.03 μm) device (Harvester) designed for the ultrafiltration (UF) of microalgae suspensions. Commercial baker's yeast served as model suspension to investigate the influence of the aeration rate of the hollow fibers on the critical flux (CF, J$_{c}$) for different cell concentrations. An optimal aeration rate of 1.25 vvm was determined. Moreover, the CF was evaluated using two different Chlorella cultures (axenic and non-axenic) of various biomass densities (0.8–17.5 g DW/L). Comparably high CFs of 15.57 and 10.08 L/m/$^{2}$/h were measured for microalgae concentrations of 4.8 and 10.0 g DW/L, respectively, applying very strict CF criteria. Furthermore, the J$_{c}$-values correlated (negative) linearly with the biomass concentration (0.8–10.0 g DW/L). Concentration factors between 2.8 and 12.4 and volumetric reduction factors varying from 3.5 to 11.5 could be achieved in short-term filtration, whereat a stable filtration handling biomass concentrations up to 40.0 g DW/L was feasible. Measures for fouling control (aeration of membrane fibers, periodic backflushing) have thus been proven to be successful. Estimations on energy consumption revealed very low energy demand of 17.97 kJ/m$^{3}$ treated microalgae feed suspension (4.99 × 10$^{-3}$ kWh/m$^{3}$) and 37.83 kJ/kg treated biomass (1.05 × 10$^{-2}$ kWh/kg), respectively, for an up-concentration from 2 to 40 g DW/L of a microalgae suspension.