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The self-coaching course for undergraduates
Trojanová, Daniela ; Jirsáková, Jitka (advisor) ; Miroslava, Miroslava (referee)
The Bachelor Thesis Self-coaching course for undergraduates deals with the method of coaching and its goal is to design, prepare and realize self-coaching course for undergraduates. All based on the interconnection of knowledge in the field of coaching and self-management.
The methods, which were used during the writing of this Bachelor Thesis, were studying of the scientific literature and questionnaire investigation. The theoretical part includes basic characteristic of coaching, coaching tools, introduction to self-coaching, education for adults, preparation and formation of courses for adults with taking account of its target group. The Practical part of the Thesis was to probationary verified particular course designed especially for students of Czech University of Life Sciences Prague. The questionnaire investigation shows that the interest rate had no specific group of students, and most of them met coaching method for the first time. Based on the final evaluation of questionnaires, it is clear that the students were largely satisfied with the course and its content fulfilled their expectations. Students answered that they will try to use any kind of acquired knowledge from the course for their future development. The conclusion summarizes further innovation of the course due to the pilot stage.
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Investigations of fungal pathogens of Douglas-fir on various provenance plots
Lísková, Aneta ; Pešková, Vítězslava (advisor) ; Vachová, Jana (referee)
The bachelor thesis evaluates the incidence of fungal pathogens due to various provenance of Pseudotsuga menziesii Mirbel, Franco. The research was conducted on the provenance area Jizbice - LS Vlašim. In this area, the presence of fungus of the genus Armillaria was evaluated. By using standard phytopathological methods, samples of needles and offshoots were taken, and the occurrence of the various needle blight species was investigated. In the field the preliminary determination and quantification of the occurrence of fungus pathogens infestation were implemented. Consequently, the microscope method was used for the fungal species spectrum completion and specification in the laboratory. The fungus Rhabdocline pseudotsugae was discovered. The fungus Rhizosphaera genus was discovered on some needles from the researched provenances. The occurrence of the Armillaria spp. was not confirmed.
It was determined, that it highly depends on the provenance of the infested tree. The most resistant provenance was Nimkish (1025), located in the north part of the Vancouver island, British Columbia. The least resistant provenance, in terms of defoliation, was provenance Merritt (1028) from British Columbia. Correspondence analysis results showed that the provenance of 1010 and 1028 showed the highest number of individuals and can be expected to have better resistance to abiotic and biotic effects of harmful factors.
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Evaluation of physical properties of rice cultivars grown in Kyrgyzstan
Nádvorníková, Martina ; Banout, Jan (advisor) ; Fraňková, Adéla (referee)
The purpose of this study was to evaluate physical properties of eight staple rice
cultivars grown and consumed in Kyrgyzstan. The objective was to record and discuss
values of several analysis in sub-sections of basic physical characteristics, textural
characteristics, mechanical characteristics and cooking properties. The physical
properties investigated seed dimensions, equivalent diameter, surface area of the grain,
sphericity, aspect ratio, volume of the grain, bulk and solid density, porosity, thousand
kernel weight, hardness of the grain, colour characteristic, optimum cooking time and
water uptake ratio. Those analysis were performed in the laboratory of Czech University
of Life Sciences and given methodology was strictly followed.
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Buildings and equipment in game preserves differentiated according to keeped game
Pastierovič, Filip ; Tománek, Jaroslav (advisor) ; Ctibor, Ctibor (referee)
This thesis focuses on hunting structures and equipment in selected game preserves. Further differences between ma, by type of farmed cloven-hoofed animals. This thesis processes literature review, which describes the different kinds of hunting structures and facilities. Within this catalog, the work focuses on differential devices with properties that ideally match the anatomy and life history characteristics of each game species. The practical part contains profiles of six hobby industries, in which a field investigations has been carried out. During this investigation, photographs of buildings and equipment were taken in the game reserves. The practical part also contains a map plotting all game preserves buildings and equipment. Another part of the practical part of the work focused on the real skills of the individual field devices. When building structures and hunting equipment in specialized game preserves, but also on free hunting grounds, may be taken into consideration to conclude this work.
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Molecular simulations unravel preference of haloalkanes for the air/water interface
Habartová, Alena ; Minofar, Babak ; Obisesan, A. ; Roeselová, Martina
Halogenated organics are emitted into the atmosphere from a variety of sources of both natural and anthropogenic origin (Finlayson-Pitts et al., 2000). Their uptake at the surface of aerosols can affect their reactivity, for example in processes which take part in ozone destruction due to production of reactive chlorine, bromine and iodine radicals. This study presents results of molecular dynamic (MD) simulations carried out to investigate the interaction of short-chain haloalkanes with aqueous surfaces. We report on a free energy minimum that the haloalkanes exhibit at the air/water interface.
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Investigation of nano zero-valent iron and zinc interactions with plants in the hydroponics
Švengrová, Denisa ; Vítková, Martina (advisor) ; Petr, Petr (referee)
The diploma thesis deals with the issue of nanoscale Zero-Valent Iron (nZVI) application for the chemically assisted phytostabilization of zinc (Zn) in order to decrease mobility of this element in the environment. The interactions of nZVI and Zn have been investigated during the experiments using tomato plants (Lycopersicon esculentum L.), which were grown in a hydroponic solution. Furthermore, the effects of the interactions on the uptake of water, macronutrients and iron (Fe) have been assessed. The use of nZVI proved to be an effective solution for the stabilization of lower concentrations of Zn (100 micromol) in the root system or for purposes of the assisted phytoremediation. However, the impact of nZVI was not significant high concentrations of Zn (500 micromol). During the application of Zn at increased concentrations a decrease in water uptake has been observed, which can limit the macronutrient uptake. It is necessary to pay attention to further research and study the effects of the nanoparticles application and their interactions in the environment.
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Ductile Fracture Criteria in Multiaxial Loading – Theory, Experiments and Application
Šebek, František ; Horyl, Petr (referee) ; Španiel, Miroslav (referee) ; Petruška, Jindřich (advisor)
Práce se zabývá tvárným lomem, který je výsledkem víceosého kvazi-statického monotónního namáhání doprovázeného rozsáhlými plastickými deformacemi, přičemž pro degradaci materiálu je uvažován lokální přístup. Ve výpočtech o rozvoji poškození rozhodují použité mezní podmínky tvárného lomu. Tyto byly teoreticky studovány v úvodu práce a po výběru vhodné mezní podmínky byl stanoven postup kalibrace. Dále byl rozpracován plán měření a realizovány zkoušky při pokojové teplotě na slitině hliníku 2024-T351, zahrnující tah, krut a tlak, pro studium rozvoje poškození a věrohodnou kalibraci vybraného fenomenologického modelu tvárného porušování, vyjádřeného pomocí lomového přetvoření a závislého na hydrostatickém tlaku a deviátoru tenzoru napětí. Mezní podmínka tvárného lomu byla posléze svázána s podmínkou plasticity. Plasticita byla pro zkoumaný materiál uvažována ve tvaru zohledňujícím i stav třetího invariantu deviátoru tenzoru napětí. Celý navržený přístup, plně aplikovatelný na víceosé úlohy, byl implementován pomocí uživatelské rutiny do komerčního programu založeného na explicitní variantě metody konečných prvků. V závěru práce je předložena aplikace navrženého přístupu k modelování tvárného porušování v podobě verifikace na vybraných zkušebních testech, z níž plynou závěry a doporučení pro další práci.
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Study of Thermal Properties of Materials for Cooling of Photovoltaic Panels
Dohnalová, Lenka ; Pavlík, Zbyšek (referee) ; Matiašovský, Peter (referee) ; Zmeškal, Oldřich (advisor)
The topic of this doctoral thesis is to study the thermal properties of PCM materials and discussion of their use for cooling of photovoltaic systems. The aim of the study is to measure and characterize the thermal properties of commercial PCM materials (Micronal®), their practical use is related to the phase transitions. The behavior of bulk materials at different temperatures is well described theoretically and experimentally verified. For the application use it is necessary to examine and determine the thermal properties of PCM materials depending on the phase transitions during heating and cooling. To study the thermal properties of materials the known transient methods of measuring are used which give full information about the behavior of the materials investigated in dependence on the temperature and thus allow the determination of the thermo-physical parameters of the system. For the transient measurements there are used especially pulse transient and step wise method. Newly is used also combination of linear temperature rise (the ramp wise) and the step wise method. The principle is based on the generation of a small amount of heat inside the studied sample and it is measured the thermal response of the system from which it may be then determined the necessary thermo-physical parameters. The theoretical part of this thesis focuses on characterization of methods for the determination of thermo-physical parameters of the investigated material. In the experimental part of the approached process of experiment, the results, the method of evaluation of the obtained data and also the discussion of results from the viewpoint of potential applications are presented.
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Methods for Monitoring of Volume Changes of Cement and Polymer-modified Mortars
Vrablová, Simona ; Sedlmajer, Martin (referee) ; Žižková, Nikol (advisor)
Bachelor thesis is focused on monitoring of volume changes in polymer-modified mortars. Using Czech and foreign literature searches are processed, in which mortars in general and ongoing chemical and physical processes are described. Thesis is further concerned with description of polymer-modified mortars and with explanation of polymer-matrix forming mechanisms. The following are noticed volume changes and experimental methods of their investigation. Experiment is performed by monitoring the volume changes in polymer-modified mortars using two selected methods. For comparison volume changes in gypsum are also measured.
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Ductile fracture criteria in multiaxial loading – theory, experiments and application
Šebek, František ; Petruška, Jindřich (advisor)
Práce se zabývá tvárným lomem, který je výsledkem víceosého kvazi-statického monotónního namáhání doprovázeného rozsáhlými plastickými deformacemi, přičemž pro degradaci materiálu je uvažován lokální přístup. Ve výpočtech o rozvoji poškození rozhodují použité mezní podmínky tvárného lomu. Tyto byly teoreticky studovány v úvodu práce a po výběru vhodné mezní podmínky byl stanoven postup kalibrace. Dále byl rozpracován plán měření a realizovány zkoušky při pokojové teplotě na slitině hliníku 2024-T351, zahrnující tah, krut a tlak, pro studium rozvoje poškození a věrohodnou kalibraci vybraného fenomenologického modelu tvárného porušování, vyjádřeného pomocí lomového přetvoření a závislého na hydrostatickém tlaku a deviátoru tenzoru napětí. Mezní podmínka tvárného lomu byla posléze svázána s podmínkou plasticity. Plasticita byla pro zkoumaný materiál uvažována ve tvaru zohledňujícím i stav třetího invariantu deviátoru tenzoru napětí. Celý navržený přístup, plně aplikovatelný na víceosé úlohy, byl implementován pomocí uživatelské rutiny do komerčního programu založeného na explicitní variantě metody konečných prvků. V závěru práce je předložena aplikace navrženého přístupu k modelování tvárného porušování v podobě verifikace na vybraných zkušebních testech, z níž plynou závěry a doporučení pro další práci.
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