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Obsah selenu v sušině hub v závislosti na aplikaci hnojiv
Hrušková, Jitka
This diploma thesis deals with the research the effect of the application of selenium as a fertilizer in the substrate mycelium of oyster mushroom (Pleurotus ostreatus) on the growth of this element in the dry state mushroom. Utilization of the cumulative mushrooms characteristic, i.e. the ability to cumulate into them the substance from the enviroment. The purpose of this experiment is the possibility of using the enriched oyster mushroom (Pleurotus ostreatus) on selenium as a potential functional food. The theoretical is focused on explaining the various terms of fungus, its composition, characteristics and effects on the human body, focusing mainly on oyster mushroom ( Pleurotus ostreatus). There is paid more attention to selenium, its form, function and its effect on the human body. The practical part of the thesis includes experimental results arising from the cultivation of oyster mushroom (Pleurotus ostreatus) on substrate, which is enriched with pentahydrate sodium selenite (Na2SeO3.5H2O) in various concentrations. Single samples are determinend by using mass spectrometry with inductively coupled plasma (ICP-MS , inductively coupled plasma mass spectrometry) after decomposition of the sample in a microwave system. The results are according to the individual selenium contents in the dry matter of oyster mushroom (Pleurotus ostreatus) presented in the recommended daily doses (DDD) for possible use as functional foods. Part of this thesis is also to research the influence of the concentration of selenium on the growth of mycelia of oyster mushroom (Pleurotus ostreatus).
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Volumetric determination of weak and strong acid in the mixture.
Norková, Renáta ; Opekar, František (advisor) ; Jelínek, Ivan (referee)
The project is aimed to the study of the titration curves of the weak and strong acid mixtures. Purpose of the project is to compare titration curves computed on the basis of simple model, when neglecting influence of the solution's ionic strength , with experimental titration curve obtained through measuring under standard laboratory conditions. This comparison is carried out for one strong acid in the mixture with various weak acids, that differ in value of dissociation constant. How titration curves are influenced by the ratio of concentration of strong and weak acids is observed further.
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Alteration of some psychological methods, which are applicable school readiness at hearing-impaired children
Frývaldská-Betinská, Markéta
There is a wide range of different psycho diagnostics methods for evaluation of the school readiness of the pre-school children; however, there is no single method that is standardized or has benchmarks for hard-hearing and deaf children in the Czech Republic. This dissertation describes strong and weak point of the standard psycho diagnostic methods as well as provides recommendation which methods shall be used for psycho diagnostics of the school readiness of the hard-hearing and deaf children. The dissertation also outlines particular testing methodology for the hard-hearing and deaf children. The nine most frequently used methods were chosen for the dissertation research. A questionable understanding of the standard instruction has been indicated in seven methods: Screening Test of School Readiness, Ravens Progressive Matrices, Reversal Test, Retracing Test, Laterality Test and Drawing test of Human and Vineland Adaptive Behavior Scales. Two methods cannot be used for hard-hearing or deaf children at all, since they test ability to recognize sounds of the speech; this was a Test of auditory differentiation a WPPSI Performance Scale. Moreover, WPPSI Performance Scale is a pure verbal based test focused on measuring verbal intelligence.
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Scanning thermal microscopy of thermoelectric pulsed laser deposited nanostructures
Vaniš, Jan ; Zelinka, Jiří ; Zeipl, Radek ; Jelínek, Miroslav ; Kocourek, Tomáš ; Remsa, Jan ; Navrátil, Jiří
New materials with high possible figure of merit ZT are of high interest as a promising candidates for thermoelectric applications such as energy harvesting. Miniaturization of such systems tends toward developing of the suitable characterization method with nanometer resolution ability. In our contribution, we present the development and experimental results of a simple scanning probe microscopy method for the relative thermal conductivity characterization. The possibility of the setup is demonstrated on the set of different thin thermoelectric layers grown from hot pressed targets by pulsed laser deposition on the reference Si substrate. All the measurements were performed on the commercial Veeco Multimode scanning AFM/STM microscope with home developed controller and by using PicoCal Inc. bolometer probes with tungsten resistive path. All the experiments were done in the air at the ambient condition. Additional sample treatment for the measurement will be also briefly described
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Possibilities of the usage of nonconventional methods and dietary supplements in prevention and in health provision of calves.
PÁNIKOVÁ, Monika
Healthy and strong individuals are fundamental in every cattle breeding. Tthe aim of this study was which of these given supplement had the best influence on calf weight gain in early period after weaning to milk nutrition. This research had continued in cooperation with farm in Hakovy Dvory. Calfs were studied from March 2012 to February 2013. They were weaned into outdoor individual box after birth. There were added supplements into their ration in firs two weeks of life. Calfs were partitioned on the base of addend supplement into three experimental groups and one control group. The first weight control of calfs was after birth and the second weight control was in thirty days of life. From the different of theese values was calculated average weight gain. The best significant effect had tested groups Homeopatics and Prebiotics (Biopolym) with average increment 26,9 kilograms. Next tested group was Probiotics (Lactovita) with average increment 26,1 kilograms. The last goup was Contol, there the calfs didn?t have changed ration and their average increment was 23,5 kilograms. From the results of this study is possible to presume, that calfs had positive reaction on supplements added in first days of life and theese had favourable effect to diarrhoea prevention. Prebiotics, homeopatics and probiotics favourable stimulate calfs digestive system and they have general positive effect on calfs physiological condition.
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Alteration of some psychological methods, which are applicable school readiness at hearing-impaired children
Frývaldská-Betinská, Markéta ; Krahulcová, Beáta (advisor) ; Jesenský, Ján (referee) ; Souralová, Eva (referee)
There is a wide range of different psycho diagnostics methods for evaluation of the school readiness of the pre-school children; however, there is no single method that is standardized or has benchmarks for hard-hearing and deaf children in the Czech Republic. This dissertation describes strong and weak point of the standard psycho diagnostic methods as well as provides recommendation which methods shall be used for psycho diagnostics of the school readiness of the hard-hearing and deaf children. The dissertation also outlines particular testing methodology for the hard-hearing and deaf children. The nine most frequently used methods were chosen for the dissertation research. A questionable understanding of the standard instruction has been indicated in seven methods: Screening Test of School Readiness, Ravens Progressive Matrices, Reversal Test, Retracing Test, Laterality Test and Drawing test of Human and Vineland Adaptive Behavior Scales. Two methods cannot be used for hard-hearing or deaf children at all, since they test ability to recognize sounds of the speech; this was a Test of auditory differentiation a WPPSI Performance Scale. Moreover, WPPSI Performance Scale is a pure verbal based test focused on measuring verbal intelligence.
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Dynamics of flow around vibrating wing NACA 0012
Uruba, Václav
Flow around vibrating wing consisting of airfoil profile NACA 0012 has been studied experimentally using time resolved PIV technique. The unsteady velocity field close to the profile trailing edge is highly affected by the wing vibrations. The dynamic of the flow is analyzed using BOD technique of the flow-field for cases with and without vibrations. Comparison shows strong influence of the airfoil vibrations on the flow dynamics.
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Influence of rutin on experimental myocard injury.
Filipová, Veronika ; Mladěnka, Přemysl (referee) ; Semecký, Vladimír (advisor)
Abstact Rutin is a flavonol glycoside appearing in many kinds of plants, vegetable and fruits. There are numerous biological activities attached to it, such as antioxidant properties, hypertension treatment, anti-inflammatory effect, antihaemorrhagic activity, strengthening of capillaries, ability to regulate a capillary permeability and stabilization of blood platelets as well. Other qualities characteristic for rutin are antibacterial, antiviral and antiallergenic properties, antiprotozoal activities and anticarcinogenic effects. In recent years, the biological activity of rutin is the matter of many studies. The main objective of this thesis is to review an influence of rutin on experimental myocardium damage with usage of isoprenalin model of myocardium damage, which is causing morphological and biochemical changes of certain parameters. These changes can be compared to the myocardial infarction. Rutin was chosen to be a potentially cardio preventive substance and it was applied intravenously 5 minutes before an isoprenalin application. On experimented animals a plasma concentration of cardiac troponin T and histology images of the heart were judged. The concentration of cardiac troponin T was charted into a diagram and histological preparations (samples) were valuated by the medium of the light...
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Differentiation of yeast colonies and development of new approaches to monitor oxygen and nutrient availability
Vopálenská, Irena ; Janderová, Blanka (advisor) ; Demnerová, Kateřina (referee) ; Pichová, Iva (referee)
Yeast Saccharomyces cerevisiae as an unicellular organism is one of the best-studied experimental organisms. It is an important model organism for the study of intracellular processes of eukaryotic cells. Yeasts are also social organisms with cell-to-cell communication able to form organized multicellular structures (colonies and biofilms). Yeast and other microorganisms in nature prefer to form colonies on solid substrates rather than to grow as "planktonic" single cells (Palková, 2004; Wimpenny, 2009). The yeast S. cerevisiae typically forms colonies, biofilms were described only rarely. Yeast colonies exhibit an organized morphological pattern characteristic of each particular yeast strain (Kocková-Kratochvílová, 1982). This work is focusing on morphology and differentiation of the S. cerevisiae colonies of common laboratory strains forming less structured colonies, and strains of the Σ1278b genetic background forming highly structured "fluffy" colonies. It shows that polarized budding pattern and especially cell ability to form aggregates enable development of structured morphology. During development of "fluffy" colonies two differently regulated events of dimorphic switch from yeast form to filamentous growth occur. One of these events is dependent on the surface glycoprotein, Flo11p flocculin. This...
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Lubrication of hip joint replacements
Rebenda, David ; Hartl, Martin (referee) ; Vrbka, Martin (advisor)
This thesis deals with the experimental study of lubrication of hip joint replacements. The influence of the synovial fluid composition and the head material to the lubricating film thickness were asssesed by using a pendulum hip joint simulator. Both of these effects were assesed under static and dynamic loading conditions. The experimental results showed that the movement of the head against the cup is unnecessary for the separation of the rubbing surfaces by a layer of adsorbed proteins. Composition of the synovial fluid then significantly influences the thickness of the lubricating film. Two opposite extremes have been observed during tests with two model synovial fluids. The first fluid formed a very strong lubricating film. The second sample almost prevent adsorption of proteins and consequently formed only very thin lubricating film. The influence of the material is noticeable when comparing the results obtained with a metal head and ceramic heads. Metal head formes under the same conditions thicker lubricating film. This evidence may be partly influenced by different diametrical clearances, which were in the case of ceramic heads higher.
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