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Extension of biomass boiler
Kastner, Jakub ; Šťastný, Ladislav (referee) ; Burian, František (advisor)
Goal of this work is design and create extension data acquisition unit for existing system of heating boiler. Work is divided to theoretical and practical part. In theoretical part is mentioned methods of measuring temperature. Methods of measuring flue gas and placement of boilers into different classes according to standard ČSN EN 303-5:2013. The practical part deals with the design of schematic circuit for measuring the required parameters (lambda probe, thermocouple, measuring the light intensity using the photo-resist). Mechanical cover, testing created board under real conditions and the involvement of extension board into existing system of boiler. When commissioning the first version of the board appeared errors that were removed in the second version. In attempts to improve the operations of two boilers were found errors leading to the impossibility of any improvements.
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Fast continuous in-situ XCT of additively manufactured carbon fiber reinforced tensile test specimens
Glinz, J. ; Maurer, J. ; Holzleitner, M. ; Pace, F. ; Stamopoulos, A. ; Vopálenský, Michal ; Kumpová, Ivana ; Eckl, M. ; Kastner, J. ; Senck, S.
The reinforcement of fused filament fabricated (FFF) components with continuous fibers allows for high versatility in the design of mechanical properties for a specific application’s needs. However, the bonding quality between continuous fibers and the FFF matrix material has high impact on the overall performance of the composite. In a recent study [1], additively manufactured (AM) continuous fiber reinforced tensile test specimens have been investigated regarding the effect of amount and material of the embedded continuous fibers on tensile strength and AM build quality. During these tensile tests, a sudden reduction in tensile stress, which most likely was not related to actual rupture of continuous fibers, was noticeable. Since X-ray computed tomography (XCT) scans were performed only prior to and after the tensile testing, a detailed investigation on the origin of these drops in tensile stress was not possible. Within this work, we will expand upon these findings and present results of fast on-the-fly in-situ investigations performed on continuous carbon fiber reinforced specimens of the same AM build. During these investigations, specimens are loaded under the same conditions while fast XCT scans, with a total scan time of 12 seconds each, were performed consecutively. The resulting three-dimensional image data reveals internal meso- and macro-structural changes over time/strain to find the cause of the aforementioned reduction in tensile stress.
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Evalution of information from Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations
Hajáková, Jaroslava ; Pešice, Petr (advisor) ; Kastner, Jiří (referee)
KAPITOLA ABSTRACT Abstract Topic of Mc. S. Thesis: Evaluation of information from Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations. Abstract: This paper focused on comparing the information from the satellite Meteosat 8 and the CZRAD network of meteorological radars in selected significant convective situations. The main goals of this study were to assess how satellite and radar data respond on development of convection and if the satellite data responds on intenzifying convection before the radar data. For this purpose, four significant convective situations and associated areas (72 x 72 km) were selected, and the satellite and radar data were preprocessed. Appropriate differences of spectral channels (i.e. satellite methods) and radar products were chosen. The preprocessing involved data synchronization in time and location. The parallax correction was used for satellite data. Seven satellite methods were used - spectral channel IR 10.8 (TIR10.8), difference of channels WV 0.6 and IR 10.8 (TWV6.2 - TIR10.8), IR 13.4 and IR10.8 (TIR13.4 - TIR10.8), IR 12.0 and IR 10.8 (TIR12.0 - TIR10.8), IR 8.7 and IR 10.8 (TIR8.7 - TIR10.8,), NIR 1.6 and VIS 0.6 (REFNIR1.6 - REFVIS0.6) and the trispectral method. The trispectral method resulted from measurements of...
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Analysis and project plan of information services in climbing areas
Kastner, Jan ; Vomáčko, Ladislav (advisor) ; Šafránek, Jiří (referee)
Title: Analysis and design solutions to information services in the climbing areas. Objectives of work: To evaluate the current level and the penetration of information systems in climbing tourism. Designing the ideal information system for climbers, which would be applicable to any climbing area. Methodology: The investigation, we used quantitative and qualitative methods research, primarily survey. The questionnaire we created specifically for our purposes, and spread it among a random sample of climbers. For further information, were used guided interviews and written questions directed to the people, providing individual information sources. The investigation using case studies, we analyzed the two main Web site for climbers in the country. Results: The results of the work serves as a basis for a thesis, the to prepare the system for a particular rock area. Will also be used as basis for further increasing the level of information provided in the CR climbing tourism. Keywords: rock climbing, information services, tourism, websites, guides
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Anomalies of air temperature in Czech Republic
Šandová, Milada ; Kastner, Jiří (advisor) ; Moravčík, Luboš (referee)
This paper presents the spatial distribution of air temperature anomalies in the Czech Republic for three climatological periods: 1851-1900, 1901-1950, 1961-1990. Main stationary factors influencing climate in the Czech Republic are latitude, longitude and altitude. Therefore the temperature gradient, which was calculated by multidimensional linear stepwise regressions analysis, was expressed in a degree of latitude, longitude or hundred meters of altitude. The gradient was specified as monthly, seasonal and annual means of each period. The aim of the Mc. S. thesis was to determine areas with negative or positive anomaly and to explain the causes of the anomaly. For this purpose a method of deprivation of the stationary factors and their influences was developed. To avoid altitude influence, the monthly and annual temperature means were converted to sea level temperature. Afterwards, the gradients of average monthly and annual air temperature were used to avoid the latitude and longitude influence. The anomaly represents the deviation of the average value determined from values, which were deprived of geographical location. Resultant values were processed by Inverse Distance Weighted interpolation in the Geographical Information System (GIS) environment. The main result of this work is representation of...
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Effect of submitters to the form of outdoor management training courses
Kastner, Jan ; Frainšic, Michal (advisor) ; Turčová, Ivana (referee)
Summary Title of project: Effect of submitters to the design of outdoor management training courses. Aim of project: We compared the form of outdoor management training, which is described in the literature with images of HRs. We defined how much HRs affect form of outdoor management training courses. Methodology: We used a qualitative research method, specifically literature search in preparation for our project. We decided to incorporate the surfy as a quantitative methods of research. We created the questionnaire specifically for our purposes and we spread it among a random group of HRs. We used both of printed and electronic form. The results of the survey were compared with the facts found in the literature. Results: The results of the work serve to illustrate theories of courses of outdoor management training in the Czech republic. We found that the submitter's requirements of outdoor management training courses are not in accordance with the principles of this corporate training tool. We concluded that the influence of HRs is strong enough to alter the form of courses. Key words: outdoor management training, experiential education, experience, feedback, outdoor course
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Early cancerogenesis in head and neck squamous cell carcinoma.
Kastner, Jan ; Betka, Jan (advisor) ; Salzman, Richard (referee) ; Smilek, Pavel (referee)
Squamous cell carcinoma is the most frequent malignant tumour of head and neck. Prognostic and predictive information as an individual imprint of molecular-genetic analysis of HNSCC will help to determine the best indivicual treatment. And in case of surgical appraoch the optimal resection with adequate quality of life and long-term survival. Study of early cancerogenesis in our project is based on knowledge, that histological normal mucosa next to tumor shows preneoplastic molecular alterations. Molecular genetic changes in a histological normal mucosa harbouring a tumor may play a principal role in revealing of early cancerogenesis process. Molecular-genetic analysis of cancerogenesis in HNSCC reveals prognostic and predictive factors, which are necessary for evaluation and decission for the best individual treatment. This is the concept of tailored medicine The text summarizes current knowledge of early cancerogenesis in HNSCC and presents molecular-biological trends, which are necessary to discover details of early cancerogenesis and thus to get a tool for better detection as well as treatment of malignant disease. The study is based on fragment analysis of microsatelites lesions in tumor tissue in comparison to adjacent mucosa and the healthy mucosa. Results show significant molecular-biological...
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In-situ compression test of artificial bone foams in controlled environment using X-Ray micro-computed tomography
Glinz, J. ; Kytýř, Daniel ; Fíla, Tomáš ; Šleichrt, Jan ; Schrempf, A. ; Fürst, D. ; Kastner, J. ; Senck, S.
In this study, we investigated specimens of artificial bone foams, developed by the research group for surgical simulators at the UAS Linz, which are used to mimic the haptic feedback of physiologic and pathologic bone for more realistic surgery training. Specimens with two kinds of mineral filler material as well as different amounts of foaming agent were tested in an environmental in-situ loading stage developed by the ITAM CAS and scanned via X-ray micro-computed tomography. In this in-situ stage, specimens can be immersed in liquid and tested under temperature-controlled conditions. Consequently, a total amount of 12 specimens was subjected to compression loading, half of them immersed in water at 36.5 °C and half in dry condition. Results showed that there is no significant influence of liquid immersion to the compression outcome. However, foams with less amount of foaming agent appeared to have smaller pores resulting in higher compression strength.
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