The aim of the thesis was to define the meaning of radiochemical processes which take place in coolant of the primary circuit of the Nuclear Power Plant; and to describe the way of measurement of chemical parameters. The second aim was to define the significance of dissolved hydrogen to compensate for corrosion-threatening corrosion-safe operation of plant and to describe the method of generating hydrogen by ammonia. The third aim was to investigate the time courses of ammonia and hydrogen concentrations within the two production units. The last aim was to investigate unilateral dependence between ammonia and hydrogen concentrations. The first two aims were met by using system analysis of coolant chemical parameters, methods of measuring them, and ongoing radiochemical processes in the coolant. Ammonia and hydrogen were selected for deeper investigation, because of the results of the analysis. H1, H2 and H3 hypotheses have been formulated to meet the other two aims. The H1 hypothesis was used to verify the empirical distribution of ammonia and hydrogen concentration measurements by non-parametric normality testing. Hypothesis H2 investigated the time dependence of ammonia and hydrogen concentrations by regression analysis. In case of verification of H3 hypothesis the method of regression and correlation dependency was used. The verifying of hypothesis has shown that the empirical distribution of the measurement of hydrogen and ammonia concentrations is more closely related to the theoretical normal distribution. Furthermore, it was verified that the linear regression function of the time dependence of ammonia and hydrogen concentration measurements is close to the parallel to the timeline during the fuel campaign. Linear regression and correlation analysis confirmed that the correlation between hydrogen and ammonia concentrations is similar on both blocks and close to strong positive correlation. Verification of required regressive and correlative bending between ammonia and generated hydrogen can be understood as a practical contribution.

The aim of this study was to investigate a potential impact of the old polychlorinated biphenyls (PCBs) dump on their occurrence in Bezdrevsky stream basin. Wastes, containing PCBs, were illegally stored in the area of ex-agrochemical factory in Lhenice village. Six localities were chosen for sampling by the method of integrative passive samplers SPMD, which provides more valuable information about contamination than commonly used grab samples. Passive samplers were exponated for 18 days in June 2017. The samples extraction was performed at the Laboratory of environmental chemistry and biochemistry (Faculty of fisheries and protection of waters), followed by clean up and preparation of these extracts for analysis with gas chromatograph coupled to tandem mass spectrometer (GC-MS/MS). Obtained data on PCBs amount in the samples were recalculated to their concentration in water. Concentration of seven indicator PCBs congeners (PCB 28 + 31, PCB 52, PCB 101, PCB 118, PCB 138, PCB 153 a PCB 180) was determined. These congeners are typical for technical PCBs mixtures which were produced in Czechoslovakia in the past. From their relative abundance, the potential source and an age of the contamination were estimated. Their total sum indicated significant exceedance of the limit only for the first locality, in the reservoir draining the dump area. There was found the concentration of 100 ng.l-1 of the 7 indicator PCBs sum. Concentrations at other localities complied with required limits and varied between hundredths to tenths of ng.l-1. In comparison with older data acquired from this area, the concentration at the first locality did not change, whereas PCBs concentration at the second and third locality downstream is currently lower than in past. Our data were compared to the latest data of PCBs concentrations in selected localities in CZ, which were received from Czech hydrometeorological intitute. From measured values can be stated, that the basin of Bezdrevsky stream and its fish pond system are not endangered by the presence of PCBs. Only two localities situated near the source of PCBs are comparable with localities in CZ which are influenced by the long term industry presence.

There is a number of measures, which have been currently performed on the Brno Reservoir, with the aim at the recovery of the environment health and at the reduction of incidence of cyanobacterial water blooms. The main intervention in this efforts was the desrease of water level in 2009-2010, when the level was reduced by up to 9 m. This intervention resulted in drying of the uncovered area of the littoral bottom and in completely changed oxygen conditions in the remaining lake. The objective of my work is to evaluate changes in benthic macroinvertebrate assemblage in response to these interventions and measures. On the sites of the reservoir, selected with respect to water levels and in-depth ratios, macroinvertebrates were seasonally sampled by the Ekman grab and kick-off approach in deep muddy sites and in the littoral zone, resepctively. Samples were collected at the ?Hráz?, ?Střed?, ?Litorál?, ?Rakovec?, ?Zouvalka?, ?Rokle? and ?Horní vzdutí?. In parallel with sampling selected environmental parameters (temperature, O2) in epilimnium hypolimnium were measured. The samples were washed and conserved for later determination and quantification in the laboratory. All macroinvertebrate samples were divided into three groups: Chironomidae, Oligochaeta and Others. The result are presented in a graphical form as the biomass and density on different sites according to the years preceding the reservoir draining, during the water level decline and afterwards and discussed in association with certain abiotic factors.

This diploma thesis deals with the issue of sediments (undissolved substances) and with the possibilities of reducing sediment denudation in an agricultural landscape, especially my means of GAEC 2. The principal object of the thesis is to assess the effect of GAEC 2 on sediment denudation and to propose complementary erosion control measures in a landscape of interest. The research basin of the Jenínský Brook with permanent graminaceous vegetation on its soil blocks (without GAEC 2 application) and the basin of the Budský Brook in the soil blocks of which the GEAC 2 standard is applied were chosen for this thesis. The data series of concentrations of undissolved substances and flow-rates were processed to obtain the required data. The data series were gathered from themonitoring of collection cross-sections J1, J2 (Jenínský Brook micro - basin) and collection cross-section B1 (Budský Brook micro - basin) in the hydrological years 2011 and 2012. The results obtained were compared and the causes of the resulting values including the GAEC 2 effect were established. Appropriate measures to be taken to reduce sediment denudation were proposed based on the detailed research of the basins in question.

The aim of this diploma thesis was to detect (anti-)progestagenic activity in wastewater samples from the influent and effluent of six wastewater treatment plants (WWTPs) located in South Bohemia. Subsequently, the efficiency of the treatment process of this WWTPs was assessed from this point of view. The wastewater from WWTPs was transported to the laboratory and extracted oby solid phase extraction. The eluates were washed, evaporated and dissolved in DMSO. Detection of (anti-)progestagenic activity was performed by using the PR-CALUX in vitro bioassay. Transgenic cells were seeded on well plates and were exposed to ORG2058, reference substance for progestagenic activity, or RU-486, reference substance for antiprogestagenic activity, as well as a number of diluted wastewater extracts. After that, luminiscence of the cells was measured and it was was expressed in relative light units which were a measure of (anti-)progestagenic activity.(Anti-)progestagenic activity was reported in equivalent concentrations of the reference substance. Progestagenic activity in WWTPs influent ranged from below LOQ up to 1.8 ng/l ORG2058 eq. In effluent this activity ranged from below LOQ up to 0.5 ng/l ORG2058 eq. The elimination rate of progestagenic activity ranged from -25% to 100%. Antiprogestagenic activity in WWTPs inffluent was below the LOQ up to 1 ng/l RU-486 eq. In effluent this activity was below LOQ up to 9.7 ng/l RU-486 eq. The elimination rate of antiprogestagenic activity ranged from -50% to 100%.(Anti-)progestagenic activity in waste water has been demonstrated by using the PR-CALUX in vitro bioassay. Negative removal efficiency of some WWTPs was also documented. This is probably caused by biotransformation of some substances which don´t have (anti-)progestagenic activity to substances which have this activity or it is caused by deconjugation of metabolits of compounds with (anti-)progestagenic activity. Antiprogestagenic activity may be more hazardous for organisms living in the aquatic environment than progestagenic activity because of concentrations in WWTPs effluent. However this activity should not be underestimated.

This work deals with the revitalization of the Jenínský stream, the revitalization is mainly focused on the separation of pipes from some parts of the stream. The new track of the stream including a vegetation is proposed at its spring. The revitalization also concerns the drainage system, where a new drainage trail and a retention tank are proposed. For the appropriate design of the flow capacity, drainage of water from the river catchment was calculated and the flow and concentration of the substances in the stream were analyzed. Water, its composition and hydrological cycle are generally described in the literary research. It also explains the collision-draining process and the factors that affect it. Theoretic part deals with the revitalization of watercourses and, lastly, drainage systems are described.

TITLE: Influence of yoga on the attention of preschool children AUTHOR: Bc. Veronika Volfová DEPARTMENT: Department of Physical Education SUPERVISOR: Mgr. et. Mgr. Zdeňka Engelthalerová ABSTRACT: This thesis aims to determine whether regular yoga exercises of preschool children influence the progress of their attention positively. The thesis is divided in two parts. The theoretical part starts with the definition of preschool age and the introduction of the principles, effects, and meaning of yoga exercises. Further, it explains the term attention and states options of its influencing and outcomes of already performed research in this area. The practical part offers the results of quantitative research that observed the relationship between yoga exercises and children's attention. The research had the form of an experiment, i.e. with the collaboration of an experimental group, which participated in yoga exercises, and a control group with no yoga exercises. The attention level of children from both groups was determined by means of two attention tests both before the exercise set and afterwards. Although the attention level has improved with both groups, the research results show a more distinctive improvement with the experimental group. KEYWORDS: Yoga - Preschool child - Attention - Concentration -...

This master thesis is focused on the market concentration in six sectors of public procurements in the Czech Republic, and the relationship between level of market concentration, profitability of the companies, final price and number of bids. The analyzed procurements refer to food industry, electricity, postal and telecommunications services, solar energy, IT and automotive sector from period of 2007-2010. Concentration ratio, Herfindahl-Hirschman index and Gini coefficient were used to quantify market concentration. The first four of above mentioned public procurement markets seem to be highly concentrated according to these indicators; the remaining two cases are unconcentrated or moderately concentrated. Correlation analysis was used for each sector. The analyzed variables were: market shares of the companies, their profitability, average number of bids and average proportion of the final and expected price in tenders which the company won. Further, the relationship between market concentration indicators and average variables for the relevant sectors was assessed.

Charles University, Faculty of Pharmacy, Hradec Králové Field of study: Specialist in laboratory methods Author: Bc. Tomáš Hampl Supervisor: PharmDr. Ondřej Janďourek, Ph.D. Title of diploma thesis: Mycobacterium tuberculosis as causative agent of grave illness The aim of this diploma thesis is to deal with tuberculosis, describe the pathogen, taxonomic classification, describe the origin, course and clinical manifestations of the disease, diagnosis, including laboratory diagnostics, epidemiology of tuberculosis, treatment and prevention. Tuberculosis (TBC) is one of the deadliest infectious diseases in the world caused by bacterium M. tuberculosis in humans. TBC is sometimes referred as a disease of the past, but the recent rise in cases of the disease, and especially the spread of forms of drug-resistant TBC, makes the disease very dangerous. Currently, a major problem is the alarming rise in resistant and multi-resistant tuberculosis, which is not counteracted by commonly used first-line drugs. Therefore, there is a constant emphasis around the world on discovering and testing new potential antituberculotics that could help patients with resistant and multidrug-resistant TBC. In the experimental part, the thesis deals with screening of antimycobacterial activity of potential antituberculotics...

This diploma thesis is devoted to the issues of the formation of fine particles in dependents on the combustion parameters. The first part of thesis is review, which summarized the information about combustion process and about formation of the gaseous products and fine particles inside them which created during combustion process. The main content of thesis is realization of measurements of fine particles from combustion, in several types of the tested combustion devices. Next part is a description of used measurement devices, which used for measurement. Last chapters are focused on evaluation of results from the measurements, comparison of the measurements between themselves and the finding the existence of the dependence of the formation of fine particles on operational parameters of boiler. And all results are evaluated in the conclusion.