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Design of electromagnetic laboratory shaker
Vaněček, Michal ; Březina, Lukáš (referee) ; Hadaš, Zdeněk (advisor)
My thesis describes the design of a laboratory electromagnetic vibrator, which will be used for testing of the vibrating microgenerators. In the first part of my thesis is the search of selected laboratory electromagnetic vibration generators. There is also formulated its own proposal and subsequent tuning of the required dimensions and characteristics of the laboratory electromagnetic vibration generator. The tuning of necessary properties and dimensions is formed as modeling and simulating in programms Matlab / Simulink and ANSYS. The conduct of laboratory electromagnetic vibration generator is implemented in MATLAB / Simulink. Design and dimensions of the laboratory electromagnetic vibration generator is made in SolidWorks.
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The steel structure of a sports hall
Vaněček, Milan ; Pilgr,, Milan (referee) ; Štrba, Michal (advisor)
Master thesis is focused on design of steel roofing structure of sports hall. Construction is located in town of Jihlava. Proportions and disposition are in accordance of assignment of master thesis. The proportions are 40m x 60m, the height of structure is approximately 15m. Two versions of roof structure were designed – truss beam with shape of lentil and double reverse truss girders (girland truss). These versions were tentatively analyzed and designed for the main bearing members. Afterwards both of the versions were appraised and one of the versions was chosen for detailed treatment. It means there was attention focused on design of important details, creating of drawing documentation and technical report, all in the range of thesis supervisor. The valid Eurocodes were used.
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Company Performance Measurement
Holý, Radek ; Vaněček, Milan (referee) ; Bartoš, Vojtěch (advisor)
This master´s thesis deals his issue of company performance measurement. In the first part there is given theoretical framework of this topic. The practical part contains analysis of the current situation of the company with two competitors. Based on the analysis there are proposing measures, which will contribute to improving business performance.
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Redesign of Vibration Power Generator with Respect to Overall Volume and Weight
Vaněček, Michal ; Dušek, Daniel (referee) ; Hadaš, Zdeněk (advisor)
This work deals with improvement construction already of the vibration power generator design. The improvement his feature and search ideal construction with reference to material, proportions and power. Gain here mechanical properties, to come to what best tune up and development of new construction for improved check out characteristics as is achievement. Tuning up of correct parameters proceed by the simulation and modelling in ANSYS and MATLAB environment.
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Do humic substances reduce nitrite toxicity to fish?
VANĚČEK, Miloslav
The aim of this work was to verify the hypothesis that humic substances reduce toxicity of nitrite to fish. Under laboratory conditions, tests of acute toxicity were performed on aquarium fish: zebrafish (Danio rerio) and guppy (Poecilia reticulata). Fish were exposed to nitrite in the presence or absence of humic substance HS 1500. Nitrite was dosed as NaNO2. Preparation Dupla Cur (manufacturer Dohse Aquaristik KG) was a source of the humic substance (HS 1500). The preparation was tested in two different concentrations: 0.5 ml.l-1 and 1 ml.l-1. Toxicity tests were performed according to Czech standard ČSN EN ISO 7346-2. Based on the observed mortality in the acute toxicity tests, 96hLC50 values of sodium nitrite for selected species were calculated in the presence or absence of the tested preparation Dupla Cur. Tests on zebrafish showed a positive effect of Dupla Cur preparation at a concentration of 0.5 ml.l-1 on decreasing of nitrite toxicity. In this case 96hLC50 value was about 73 % higher than the value found in the test where the preparation was omitted. At a concentration of 1 ml.l-1 of the preparation a significantly positive effect was not observed. In the tests on guppy, an effect of Dupla Cur preparation on the toxicity of sodium nitrite was not observed. The tested humic substance does not have the same effect on all fish species. The effect depends on its concentration in the water.
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Výzkum a pilotní projekt využití fotovoltaických modulů pro přímou integraci do budov
Fyzikální ústav Akademie věd České republiky, Praha ; SOLARTEC s.r.o., Rožnov pod Radhoštěm ; Vaněček, Milan ; Bařinka, Radim
Zpráva popisuje přehled vykonaných činností a stav plnění dílčích cílů projektu. Cílem projektu je nabídnout architektům, stavebním inženýrům a investorům atraktivní možnost jak zvýšit užitnou hodnotu realizovaných, případně renovovaných budov. Výsledkem výzkumu a vývoje solárních modulů pro přímou integraci do budov budou zcela funkční fasádní fotovoltaické prvky pro různé účely použití. Byla provedena základní charakterizace pouzdřících materiálů a byly vypracovány technologie pro jejich zpracování v procesu zhotovení struktury solárního panelu. Zrealizovány byly tři pilotní projekty se zastoupením převážně fasádních semitransparentních FV skel. Byly vypracovány případové studie pro vhodnou integraci solárních panelů do fasád budov. Pozornost byla věnována i komplikovanému vztahu fotovoltaiky a památkové péče při případných záměrech instalovat solární panely na památkově chráněné objekty.
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