This diploma thesis is dealing of fluds filtration and using nanotextiles materials. Whis is made throught the electrospining methods usage for the filtrations of fuel. In the opening issues problemations of filration of motor Diesel. In the experimental part, analyses are carried out of the chosen nanotextilie materials for the filtration of motor and Bio Diesel. The results of liquid predicate the potential usage nanotextiles materials for the results cleaning motor and Bio Diesel. Experiments showes the hight results of filtration nanotextiles materials which is depand of modern Diesel injection systems.

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Thesis on Evaluation cross-flow filtration modules in winemaking technology, describes a comparison of two different producers tangential filtration equipment. Comparison based on sensory evaluation of wine before and after filtration. Part of the comparison is also microbial stability of filtered wine. The microbial stability was carried out in the laboratory using a sample overflow nutrient medium (agar). Filtered samples did not show any positive results. The efficacy of the two filtration devices which have been compared in this work, is above the level of 99%. In the literary part of the work deals with the filtration of wine and devices that carry filtration. The work is supplemented by a tabular overview of the cost of filtered wine in volume to 1 liter. The conclusion made recommendations for the purchase of cross-flow filters.

In this diploma thesis, we focused on the filtration of wine, the type of filtration and the filtration methods currently used in the literary section. Further, filtration materials, which are used in wine filtration and, last but not least, the use of nanoparticles in viticulture and winemaking, have been described. In the practical part, commercial filter types were used, namely Cartridge filter C11 with nanofibrous filter membrane RIFTELEN N15-2 and RIFTELEN N15-5, which we compared with the Zambelli plate filter, in which we used filter plates HOBRAFILT S15N and HOBRAFILT S30N. In particular, we compared the content of free and total sulfur dioxide, wine turbidity, protein turbidity and polyphenols in wine. From each type of unfiltered and filtered wine, we put the samples in bottles of 750 ml and left overnight in the cellar. The next day we analytically measured each variant sample. All results were then statistically processed and evaluated with recommendations for practice and further investigation.

In the last ten years can be recorded a multiple number of minibreweries, called sometimes craft breweries I tis not caused only by demand of kinds of beer characterised by special types of beer styles, but as well by the fact, that they are not anyway regulated and keep their natural taste and smell. The problém of unregulated (unfiltered and unpasteurized) beers starts by the contamination during their production and it may cause their relatively fast spoiling. Shelf life of these beers is e few weeks only. The time of their minimal shelf life is influenced by a lot of factors content of alcohol, rest extract and mentioned extent of contamination. The breweries called as industrial or commercional treat their beers by pasteurization or filtration which cause inactivation or killing of the microorganisms or their elimination. These beers are microbiologically stabile, they are not liable to quick spiling and i tis possible to insure their longer shelf life. Pasteurized a filterd beers show changes in their sensorial character. The aim of this diploma thesis was to determinate the condition of flash pasteurization of unfiltered beers with the aim of microbiological stability and simultaneously no changes of their sensorial quality. The experiment is finally in treatment unfiltered beer by differnt dosing of pasteurization units and following microbiological analysis, able to demonstrate the stability effect. The analysis were used with unfiltered and unpasteurized beers and with unfiltered beers where the pasteurization doses 20 PU, 30 PU, 40 PU, 60 PU, 80 PU and 100 PU were used. The idividual parameters were watched within the horizont of 4 months. The part of these tests was even microbiological analysis of the rinse water. Another task was to find out the dates from the microbiological controls of beer in selected small breweries, which use in order to heighten of microbiological stability, different kinds of filtration, to verify their effectivity and to appreciate their acceptability for minibreweries. The test showed the effectiveness of pasteurization of unfiltered beer with the rations 40 PU minimally. Where higher ratins were used could be seen apparent sensorial changes. The pasteurization of unfiltered beers are for craft breweries useful only in case of higher production of bottled beer or beer for export, because the financial expenses bound with provision flash pasteurizer are to big and for minibreweries mostly limiting. The kieselguhr filtration as well the ultrafiltration are for minibreweries unusefull, as they could not be able to insure such conditions that provide their proper affectiveness.

Tato práce se zabývá možností využití vlnkové transformace v aplikacích, které se zabývají potlačením šumu. Především se jedná o oblast filtrace signálu EKG. Úkolem je zhodnotit vliv různých parametrů nastavení samotné filtrace a zjistit jaký vliv má různé nastavení prahování wavelet koeficientů. Výsledkem práce je také stanovení hodnot prahů, stanovení nejlepšího způsobu rozkladu signálu a volba rekonstrukčních bank filtrů. Text obsahuje výsledky Wienerovy filtrace, při které byly testovány různé banky rozkladových a rekonstrukčních filtrů.Všechny popsané filtrační metody byly testovány na reálných záznamech EKG s aditivním myopotenciálním šumem. Algoritmy byly realizovány v prostředí MATLAB.

Fingerprints are the oldest and most used form of biometric identification. A critical step is reliable extract minutiae from the fingerprint images. However fingerprint images are rarely of perfect quality, they may be degraded and corrupted due to natural variations in skin and sensing conditions. Thus, image enhancement techniques are necessary prior to minutiae extraction. This work includes implementation of three techniques for fingerprint image enhancement, minutiae extraction and consturction of fingerprint reading device. Experiments are realized with two sets of fingerprints to evaluate the performance of implemented techniques.

The work is focused on the status and role of zebra mussels (Dreissena polymorpha) in the water reservoir Želivka. Literature review summarizes the basic characteristics of living zebra mussels and its impact on the aquatic ecosystem. Current knowledge about this invasive bivalves show that its presence in the water reservoir has certain advantages, but also disadvantages. The main advantage is that zebra as filtrator, increases the transparency of the water and provides food for the animals living in the aquatic environment, or in its vicinity. Disadvantages are then mainly from the economic point of view, the zebra clogs pipes and thus prevents water flow and attached to marker buoys, fishing nets and attaches to the hulls of ships that can be attacked from the inside. In field part population of zebra mussels was sampled in different parts of the reservoir and identified following parameters (temperature and oxygen stratification, coverage to substrate coverage depending on the depth and the substrate, the length of shells according to the horizontal and vertical gradient filtering capacity and the volume rate). The results showed that the incidence and size of shells affects both horizontal and vertical gradient. Zebra mussels occur most depth 1-9 m on rocky, or stony substrate. The greatest incidence was found at Budeč and at Hráz, where the water is less eutrophic than the Zahrádka. Based on these parameters, and literature data was calculated hypothetical filter capacity and discussed its possible impact on the ecosystem components of the reservoir.

This thesis dealt with evaluation of particular types of filtration devices. It highlighted their advantages but mentioned their weaknesses as well. In the theoretical part of the thesis there was a description of all the filter types available on the Czech market, whilst the practical part was focused on comparison of two seleceted filters - plate filter DF 200*200 mm with drain board and cross-flow fiter Romfil RF2C. The measurement result showed that cross-flow filters were more powerful with their performance about 2 530 litres per hour. Concerning microbial stabilty both filter types showed the same efficiency. The thesis also contained comparison of both filter types operating costs. According to the model calculations it was obvious that with using cross-flow filter the filtration costs were lower - around 0,30 Kč per 1 liter of filtered wine (considering 150 working hours per year). filtration costs with using plate filter were around 0,50 Kč per 1 liter (considering the same working hours).

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