The aim of this diploma thesis is a study and description of a mutual interaction of solvents belonging to the green solvents group, specifically glutaric acid esters and selected acrylic and alkyd coating systems. In the experimental part of this thesis there is a study of a resistance of the coating systems to solvents by the spotting method, which is subsequently then combined with an adhesion experiment of the coating film by the cross-cut test. Those experiments are made according to matching methods in valid version.

At the beginning of this work the physiological nature of electromyographic signal is described. Design of miniature, portable EMG amplifier for surface measurement is presented. Creation of program for data visualization is described, followed by description of practical EMG amplifier realization.

Monitoring of Chemical Parameters of Mining Waters from Hyperspectral Image Data Abstract The thesis deals with utilization of hyperspectral image data for mining water quality monitoring. Sokolov lignite basin, facing many environmental problems caused by brown coal mining activities is the area of interest. Airborne hyperspectral image data acquired by the HyMap sensor in 2009 and 2010 and ground truth data - chemical and physical parameters of water samples are the main data sources for the thesis. Practical part aims at estimating of the amount of the dissolved iron and suspended sediments in selected water bodies. Two approaches were used to achieve this goal - the empirically derived relationship between the ground measurements and reflectance of the water bodies, and spectral unmixing method. Comparison of the two mentioned approaches and evaluation of validity to use the proposed methods for the data acquired by the same sensor one year later is also a part of this thesis.

Semiconducting material CdTe/CdZnTe has a huge application potential in spectroscopic room temperature radiation detection due to its properties. Such detectors can be used in medical applications, homeland security and for monitoring of nuclear facilities. However, the final device quality is influenced by many parameters. One crucial stage in detector fabrication is the proper surface treatment. The detailed study of surface treatments and their effect on final detector device is reported. Another crucial fact is the polarization of the detector caused by high radiation fluxes which negatively affects the use of such devices. The polarization occurs by capturing the photogenerated holes at the deep levels inside the semiconductor. The possible detector depolarization by infrared illumination during the detector operation has been experimentally verified and the obtained results are shown in this thesis. For optimal technology of preparation, it is also necessary to develop the fast characterization method for prepared detectors. The last aim of the thesis is to study the resulting quality of prepared planar and co-planar detectors by transient-current-technique (TCT). TCT is an electro-optical method allowing to determine variety of transport properties of radiation detectors, such as internal electric...

This study is focused on the development of effective antimicrobial surface treatment of wooden furniture and materials based on wood. The research was performed with acrylic dispersed water-borne and two-component acryl-urethane varnishes. Treatment of varnishes based on chlorhexidine, phthalocyanines and plant extracts and the effect of unfinished wood itself were tested for assessment of antimicrobial activity. The assessment of how safe water-borne varnishes which contain biocides for in-can preservation actually are, was also evaluated in the scope of this thesis. Testing of the antimicrobial efficacy was performed according to a standard routine method and the European and Japanese standards (Agar diffusion plate test, JIS Z 2801 and EN 15457). In addition, a new method testing the antibacterial activity under dry conditions simulating the contamination by microorganisms carried on dust particles was developed. Moreover, the method suitable for testing of photocatalytic active substances simulating the real use of products was described. The appearance and physical and mechanical characteristics were tested in the final treatment of varnishes.

Many research articles describes fish oil as a beneficial for health. Mainly for prevention of cardiovascular diseases or that fish oil reduces cholesterol in blood stream. Aim of this study is to investigate effects of fish oil specifically of his parts EPA+DHA, on a modulation of immune system and phenotypic differentiation. For the experiment were chosen monocytes and macrophages obtained from experimental group of animals which was fed a diet consist of the addition of fish oil in an amount 45mg/kg of live weight. Then inflammatory state was induced by LPS. Cells surface receptors were analyze through flow cytometry specifically CD14, CD163, SLA-DR and theirs combinations after they were statistically processed. Results shows proinflammatory effects of fish oil however they were statistically not significant.

The main aim was to discover how the print will act if used as a finish treatment of furniture element by testing according to Czech standards. This thesis in theoretical part deals with fine face veneer manufacturing, demands on input raw material, describes procedures and technologies used in veneer manufacturing process. Then, it deals with spliced veneer problematics, especially factors which influence their quality. There is a brief overview of the worldwide production of veneers during years 2007 – 2017, also of import and export of veneer sheets to / from Czech Republic. In practical part, there were carried out tests of surface finish treatments according to chosen Czech standards, which were then analysed in accordance to ČSN 91 0102. Used samples were veneered, treated by oil – wax finishing and then printed. One of the tests was resistance to light – realized in climatic chamber for artificial aging (3 variants – each for 250 hours; first to simulate exterior conditions, second interior conditions and third interior conditions with high humidity). The requirements of the standard were not met in test of resistance to wet heat (change grade 3) and in case of resistance of light – almost all colours (except white and black) had greater value of total colour difference ΔE* than required in standard – more than 3,4 ± 0,4.

The properties of the two surface finishes were studied in this work: the waterborne epoxy lacquer EPOX AQUA V_1301 and solvent-borne alkyd urethane lacquer Jachtlak S-1006 with the regards to their potential applications for the finishing of the wood surfaces of furniture designed for the utilization in public places. It has been found that the dry surfaces formed by these furnishes have physico-mechanical properties that are consistent with the standards, which establish possibilities of their application. Very good antibacterial properties of the formed films without the addition of any auxiliary antimicrobial agents to the Escherichia coli and Staphylococcus aureus bacterial strains were also determined. The entire tests were carefully described, and their results were discussed in the further text.

This diploma thesis deals with recirculating aquaculture systems (RAS) in terms of their effects on quality of surface water. In the theoretical part, recirculating aquaculture systems, physicochemical parameters of water, eutrophication and fish species that were part of the experiment were described. The methodological part was focused on the detailed description of sampling, parts of the recirculating system, used feed, the origin of reared fish and methods for determination of the individual physicochemical parameters of water and sediment. Samples of water and sediment were collected and analyzed at the Department of Fisheries and Hydrobiology at Mendel University in Brno. In the practical part, the physicochemical parameters were evaluated depending on the number of fish in the system, the daily ration and the type of feed used. It was found that the ammoniacal nitrogen content of the recirculating systems is mainly dependent on the number of fish, the nitrite nitrogen content per daily feed rate, the higher the nitrate content coincides with the minimum water change and the nitrification, the amount of extractable phosphorus in the sediment depends on the type of feed used as well as the total nitrogen content. The smallest impact of phosphorus and nitrogen emissions was demonstrated in the BIOMAR Efico Enviro 920 Advance 4.5 mm feed, which also contained the highest organic content.

This final thesis deals with the quality of surface finishes of table tops manufactured in the system of industrial production and follows the requirements of applicable standards for testing. The most often used materials in production of table tops were chosen for testing of the quality. As the foundation material for finishing by coating with paint were selected components particle board, MDF and HDF (on honeycomb or particle board) in different thicknesses. Surface of desks finished in crude state or with decorating material in the form of veneer or spliced veneers. Additional surface finish were done using pigmented and transparent coating materials. Coating materials on the basis of acrylic UV, alkyd-PUR, acrylic-PUR and 1C WB dispersion were used. During finalizing by transparent coatings surfaces were finished using either waterborne or solvent-based stains. Individual layers of coatings of systems of surface finishes were given by chosen technology and by the type of coating material. Technology, which was selected for applying of coating materials, was roller coating and spraying by HVLP system. After surface completion and relaxation, physical-mechanical testing were performed on the individual testing samples of surface finishes. This testing was subsequently evaluated based on requirements of relevant norms. Individual testing samples of surfaces were divided into groups based on finishing method and type of surface finishes (pigment/transparent). Outcome of the work is the evaluation of given systems of surface finishes from the perspective of suitable utilization for table tops.