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Converting of juvenile zander (Sander lucioperca) to artificial diet (preliminary results)
Baránek, V. ; Mareš, J. ; Prokeš, Miroslav ; Jirásek, J. ; Spurný, P.
Weaning success of pond-reared zander (Zander lucioperca) fry was evaluated using three different converting methods: direct converting to dry feed (Bio-Optimal Start 0.5-0.8 mm) – variant A, three– day application of semi-moist feeding mixture on the base of fish – variant B and three-day application of semi-moist mixture + three-day co-feeding of semi-moist mixture and dry feed. These methods were evaluated regarding specific growth rate (SGR), Fulton´s factor of weight condition (FWC), survival and cannibalism. The average onset total length of fish was 35.22 ± 2.15 mm and the average individual weight was 0.31 ± 0.05 g. There were 600 individuals in each circular tank. The initial stock density was 0.62 g.l-1 (2 fish.l-1). The water temperature during this experiment fluctuated in intervals 22 – 24oC. Fish survival during a 14-day period of rearing ranged from 34.33% [C] to 50.33% [A]. Variant A and B were achieved better weaning performance than variant C regarding all parameters.
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Design of heat exchangers for high temperature applications
Jonák, Martin ; Kilkovský, Bohuslav (referee) ; Kermes, Vít (advisor)
This thesis is devoted to thermal-hydraulic design and rating of heat exchangers with the specialized commercial software HTRI. These heat exchangers are solved for real high-temperature applications, where the hot fluid is a flue gas with high temperature (above 500 °C). In the thesis is made a brief analysis of the conventional design of heat exchangers usable for high-temperature aplications, description of the basic relations, description and brief user manual of software HTRI. Further, work includes a comparative study of methods for calculation of pressure drop of the fluid at 180° elbows, as support analysis for solution of required applications characterized by low pressure drop of process fluids.
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Propagation of inclined cracks to the interface of ceramic laminates
Novotná, Lenka ; Trunec, Martin (referee) ; Chlup, Zdeněk (advisor)
Composite materials with laminated structure provide advantages which are utilised during component design. Low density, temperature and chemical stability are the profitable properties predetermining application of ceramic laminates. The main obstacle for wide spread of ceramic materials is their inherent brittleness. Therefore, in this thesis, the crack propagation in ceramics laminates has been extensively studied. Laminated structures with various volume fractions of components (alumina and zirconia) were prepared by electrophoretic deposition. Evaluation of crack propagation through the interface and determination of basic mechanical properties was conducted on the basis of extensive literature search. Crack deflection originated in both presence of internal stresses and differences in elastic modulus during the crack interface passing was monitored. A special type of specimen geometry was employed with the aim to set arbitrary angle between crack and interface. It was experimentally found that the degree of crack deflection is dependent on entering angle and volume fraction of components. Higher crack deflection was already found in the bulk of the test piece comparing to the test piece surface. The 3D fracture surface reconstruction generated using laser confocal microscopy was used in this detailed crack propagation study. Further basic elastic and strength characteristics of laminates were determined and compared to those obtained from monolithic materials. The validity of the mix rule for elastic characteristics was confirmed by comparing of elastics modulus. The most reliable method for elastic modulus determination was marked the dynamic resonance method due to low scatter and consistency in measurement. The flexural strength of all laminates tends to be close to the flexural strength of the weakest component. Therefore the mix rule is not applicable for flexural strength estimation on the contrary of elastic characteristics. The change of component volume fraction leads only to change of flexural strength scatter. Thanks to gained knowledge about crack propagation and basic characteristic determination will be possible to design ceramic laminates more efficiently for given needs of application.
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Physiotherapy after Achilles tendo injuries
HERCOGOVÁ, Eva
At the present time there are more and more injuries of the Achilles tendon. We meet with varied opinions of the therapy which has connections with the injury status of the Achilles tendon. The task of this work is to find out the effect of two different physical therapy plans on the physical condition of patients. It follows the existence of differences in the total therapeutic length. It deals with the question of the application of the unit therapeutic plan for all the patients with the Achilles tendon injury. The synthesis of observations of Achilles tendon problems is the first aim of this work. The theoretical part of this work focuses on the synthesis of observations of Achilles tendon problems as well. The work defines different Achilles tendon injuries. The Achilles tendon rupture is described in detail. The pieces of knowledge about anatomy, investigation, diagnostic processes and possibilities of treatment which are mainly from physical therapy point of view are summarized. Complications, prognosis and prevention are mentioned in this work. The other aim of this work is to draw two different therapeutic plans of the homogeneous complex of two probands. The practical part of the work focuses on making varied therapeutic plans of the homogeneous complex of two probands since the time of removing the plaster bandage. The methodology of the qualitative research with techniques of the anamnestic conversation, observation and application of therapeutic plans withing the frame of two cases history one of which is total with the submission of physical therapy methods, concepts and physiatrics is mentioned and used. The other therapeutic plan misses physiatrics because not every rehabilitative places of work have the possibility to use the combined therapy. The results were evaluated by comparing of two output kinesiology analyses of the homogeneous complex of two probands. Both used therapeutic plans have positive effect in reference to motivation to a patient to another therapy, improving quantity of motion of ankle joint and increasing of muscular force. It is not possible to make the unified therapeutic plan for every patients with the Achilles tendon injury. It is necessary to follow the individualization which continues the detailed input checkup. It is also more profitable to include the complex physical therapy plan to the rehabilitaion.
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Diagnosis of game performance in football
Štumpf, Bedřich ; Buzek, Mario (advisor) ; Tůma, Martin (referee)
Title: Diagnostics ofgame performance in football. Goal ofthe project: To analyze the style of resolving the quick counter attack ofCzech Republic at the under 20 years World Championship in football. To localize the constructive gain ofthe ball with resulting utilization offree spaces for carrying out the counter attack. To note (activity analysis) all attacking actions endíng with a shot, standard situations gaining or dangerous scoring chances. Method: Observation analysis with quantitative and qualitative ranking indirect sighting. Results: Objectification oftheoretical approaches in activity structure in match process in football. Application approaches for utilization in training process in the sense ofmatch and training integration. Keywords: Quick counter attack, football, constructive gain ofthe ball, application approaches 2
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Vodní a hybridní plazmatrony s plynovou a vodní stabilizací
Hrabovský, Milan
Plasma torches with water-stabilized arc (Gerdien arc) are utilized in plasma processing for specific applications. In water-stabilized torches an oxygen-hydrogen plasma jet is produced. The torches are characterized by very low mass flow rates and high power. Plasma enthalpy is thus several times higher than enthalpy of plasmas generated in gas-stabilized torches. High enthalpy is accompanied by very low plasma density. Also other plasma parameters substantially differ from the ones in gas torches. New type of plasma torch with combined stabilization of an electric arc by water vortex and gas flow was investigated. This hybrid water/gas stabilization offers possibility of adjustment of plasma jet parameters in a wide range from high enthalpy, low density plasmas typical for liquid stabilized torches to lower enthalpy, higher density plasmas generated in gas stabilized torches.
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Industrial TwinCAT based diagnostics application
Zigo, Ľubomír ; Ondroušek, Vít (referee) ; Krejsa, Jiří (advisor)
This bachelor´s thesis describes designing of diagnostics application for press controlled by Beckhoff TwinCAT. Application monitors press regularly and informs staff in case of breakdown. Diagnostics application is created in high-level programming language Visual C++ in Microsoft Visual Studio environment. Application communicates with TwinCAT via .NET Framework library TwinCAT::Ads, which is part of TwinCAT. Breakdown texts are read from database via Microsoft OLE DB interface using SQL.
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Software radio in the mobile radio-communication /telephony/
Ďurovič, Svetozár
In the paper various applications of software radio in wideband mobile telephony systems are presented. The architecture of the basic parts of the mobile systems 3G is described and special attention to the technical problems is given. The report contains many computer programs to illustrate the mathematical procedures.
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