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This thesis deals with the areal survey of water resources in the area of Priessnitz baths, to search for natural medicinal sources and advanced data collection for evaluation radiohydrogeochemical situation of the area. The area of interest is situated in the Hrubý Jeseník mountains. Hydrogeologically it is a hard rock, which consists mainly of metamorphic rocks of the Bohemian Massif, the Moravian-Silesian region, presented as the methamorfic envelope of the desen group of Silenics. Altogether, 83 objects were recorded and many of them were visited repeatedly. Physical parameters (temperature, pH, Eh, conductivity), activity 222Rn and flow rate were measured. In addition, the chemical composition and tritium contents were determined on selected sources. Conductometry, thermometry, and probes for peloids were conducted. There was no source of water (or peloid) that would reach the criteria of a natural healing source (according to the Czech spa law). However, the overall hydrogeological and hydrochemical situation is quite complicated. Both the genesis of water and its chemical composition is highly heterogeneous and influenced by the heterogenical geological structure. Generally, we have distinguished three types of water according to the chemical composition. We also divided the water sources...

A review on plant rhizodeposition, nutrient uptake and interactions with rhizosphere microbial community is presented. Based on reviewed findings, a study on rhizodeposition rates and rhizodeposits bioavailability of two macrophyte species with different life strategies (stress-tolerator and competitor) was conducted. The effects of P addition and sediment type on rhizodeposition and microbial activity were examined. Research was carried out in tropical marshes of Belize; results from field were supported by C partitioning mesocosm study. This project was supported by NSF # 0089211 and ME 912.

This work is focused on improvement of particle formation and separation processes in drinking water. These include the comparison of the dynamics of different coagulation reagents (aluminum sulphate and ferric sulphate) to find the optimal dose of coagulant. During centrifugation test is important to find such a setting centrifuge where we get the best results. In this work we studied the influence of the total mineralization at the optimum dose of coagulant.

My work targets the change in content of the organic soil karbon and basic cations in relation to changes of area usage and agricultural management of the chosen special {--} interest places of Stropnicko. In the monitored period from 2001 till 2007, the soil organic mass markedly fell off. The greatest decline was in the forest ecosystem in all researched basins. Decline of organic soil karbon content was also found on permanent grass growth, but it was much less than in the forests. On the contrary mild improvement turns out on the arable land. Next pH value of soil leach was monitored. The greatest change was shown in the forests. The greatest increase of PH value was at the area of Pasecký potok. In other basins, expected Veverský potok, pH value increased too. On the contrary, there is decline of pH value on the permanent grass growth and arable land . There were not statistically great advancements between 2001 and 2007 in the soil mineral reserve, especially of the basic soil cations. The significant decline of sodium is the exception. I have suggested steps that lead to the steady way of farming in the agricultural foothills. I have recommended to increase supplied barnyard manure into arable land, the optimalization of cow units for pasture area and the gradation of the forest communities to deciduous, eventually mixed stands, according to the vegetation levels.

The aim of this study was to determine the occurrence of selected toxic elements in wine. The theoretical part described technology of wine production and selected toxic elements (cadmium, lead, copper, zinc, nickel and chromium) in the terms of their impact on wine quality and their effects on the human organism. It provides an overview of instrumental analytical methods, which can be used for the analysis of toxic metals. In the experimental part inductively coupled mass spektrometry technique was used for the analysis of wine samples. The measured values are statistically processed and compared with current legislation.

Natural processes that cause differences in rates of decomposition and mineralisation of organic plants matter in soils of Sumava mountains' glacial lakes were studied using plant litter dominant in understorey of spruce forest in watershed of two lakes, Plesne and Certovo. The aim of this study is to determine the effect plant liter chemistry on decomposition and mineralisation rate. We hypothetize that chemistry of liter of understorey vegetation significantly affect N mineralisation / immobilisation in siols. During four month laboratory experiment were studied the effect of litter quality characteristics on C mineralization rates and N release. Spruce needles (Picea abies) and leaves of four dominant species (Avenella flexuosa, Calamagrostis villosa, Vaccinium myrthillus and Athyrium alpestre) of understorey vegetation were collected in autumn 2006. Litter was incubated at 0 and 10 °C. CO2 release was regularly measured each 14 days. Amounts of phenolics, available phosphorus, total and extractable C and N, release of NH4+ and NO3- were measured at the beginning, after one and four months of incubation.

Age estimation is a common requirement in forensic, bioarcheological and biomedical practice. This master thesis deals with age estimation based on permanent tooth mineralization according to Demirjian et al. (1973). The research material consisted of orthopantomograms of 716 Czech and 743 French children aged between 4 and 15 years. The purpose of this study was to analyse the suitability of the original French-Canadian standards for age estimation (Demirjian a Goldstein, 1976) and the recent Belgian standards (Willems et al., 2001) in Czech and French population. Another aim of the study was to evaluate the accuracy of the neural network method that represents a completely new approach in data prediction. In order to express the accuracy of estimate we used mean and median of difference between chronological and dental age, and RMS error. Using logistic regression, differences in tooth mineralization between Czech and French population and between girls and boys were also evaluated. Our results indicate that the French-Canadian standards gave a consistent overestimation of dental age compared with chronological age. Mean difference was 0,33 years for Czech children and 0,45 and 0,46 years for French girls and boys, respectively. We found that Willem's method and neural network method were more...

Práce bude zaměřena na studium bakteriální degradace MCPP a BAM a na hledání vhodných bakteriálních kmenů.