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Different ways of using corn for forage purposes
SLANEC, Roman
Main focus of this thesis was to evaluate various ways of using corn as a provender and briefly mention economic and ecologic value of corn cultivation. According to the aquired data we can say that corn cultivation for provender has a growing tendency in the Czech Republic. Majority of corn is used in the form of silage. It is important to pay attention to agrotechnics, hybrid selection, cultivation and harvest in order to produce silage of high quality. Storage bags has shown better result both economically and in quality compared to silage reservoirs.
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Alternative drives of cars
Wachal, Ondřej ; Dvořák, Antonín (advisor) ; Hadrabová, Alena (referee)
My diploma thesis deals with alternative drive cars that are still more popular these times. Due to limited supplies of oil fields car factories turn their attention to the development of alternative drives, which would be independent of exhaustible resources. The aim of the work will mainly compare the economic efficiency of current alternative fuel vehicles, where belong hybrid drives, electric drives, but also a unit for compressed gas or biofuels, to the current conventional drives. This comparison will be done from the perspective of the end consumer who will decide on the purchase of alternative drive mainly because of its indicating cost savings. Another important part of the evaluation is whether alternative fuels are actually more environmentally friendly and are actually counted all the costs. For this analysis I will provide a variety of specialized studies dealing with the issue of alternative propulsion friendliness to the environment.
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Pig meat quality in selected final hybrids
VONDRUŠKA, Miroslav
The bachelor work was focussed on the area of the chemical composition, the physical and technological quality of meat, including the ageing processes in meat. Then there were described the quality indicators, that means pH, colour, luminosity of meat, viscozity of meat, texture of meat, percentage of intramuscular fat and the methods of their evaluation. Consequently were evaluated influences that affect the quality of meat that means the hybrid combination, sex, slaughter weight, nutrition and stabling. Pre-slaughter influences (transport to slaughterhouse, manipulation with pigs before slaughter, methods of stunning and killing) were included too.
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Calculation of the fracture parameters for a crack growing from the tip of a V-notch
Gröger, Roman ; Hutař, Pavel
This article yields a comparison of two principles for caculation of the fracture parameters - the direct finite element method and hybrid element method. The stress intensity factor and the T stress for a crack growing from the tip of a nonsingular stress concentrator for a large variety of notch angles is obtained. It is discussed the sensitivity of each parameter on the ratio of crack length to the width of the specimen. The obtained results can contribute to more precise characterisation of the crack instability state in a case of the combination V-notch + crack.
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