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Characterization of lead-free piezoelectric ceramics
Šťastná, Magdaléna ; Holcman, Vladimír (referee) ; Tofel, Pavel (advisor)
This project is focused on lead-free piezoelectric ceramics which are meda in CEITEC. Behaviour of these ceramics is quite different from the lead one. The first part is dedicated to dielectrics and its polarisation techniques. These techniques also include the piezoelectric effect which occurs only in crystals without central symmetry. The following part is focused on piezoelectric materials, piezoelectric polymers and piezoelectric ceramics respectively. The next section of the project is dedicated to the design of an experimental workplace for direct measurement of the piezoelectric charge coefficient đť‘‘33. The experimental part of the work is focused on electric characterisation of lead-free piezoceramics.
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Hodnocení jakosti bílých jogurtů v závislosti na obsahu tuku vstupní suroviny
Šťastná, Magdaléna
The thesis aimed to evaluate the quality of plain yoghurt depending on the fat content of the input raw material. The literature part is focused on the legislative requirements and classification of fermented dairy products and plain yoghurt, the raw materials from which plain yoghurt is produced and the basic technological operations of the production process. In addition, mention is made of vegetable fats and their use in the manufacture of alternative dairy products. The practical part deals with the production of yoghurts with different fat contents and different raw materials (animal and vegetable fat). Experimentally produced samples were subjected to Physico-chemical and microbiological analysis. A sensory questionnaire was developed and the yoghurts were sensorially evaluated. Finally, it was assessed whether the use of vegetable fats as a fat additive in the manufacture yoghurts is possible. The result showed that the use of vegetable fats to produce yoghurts of lower fat content would be possible without negative effects on quality, provided that this was allowed by legislation. According to Czech legislation, only a product containing a dairy raw materiál may be called yoghurt. Therefore, this product could not be called yoghurt, but an alternative dairy product.
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Characterization of lead-free piezoelectric ceramics
Šťastná, Magdaléna ; Holcman, Vladimír (referee) ; Tofel, Pavel (advisor)
This project is focused on lead-free piezoelectric ceramics which are meda in CEITEC. Behaviour of these ceramics is quite different from the lead one. The first part is dedicated to dielectrics and its polarisation techniques. These techniques also include the piezoelectric effect which occurs only in crystals without central symmetry. The following part is focused on piezoelectric materials, piezoelectric polymers and piezoelectric ceramics respectively. The next section of the project is dedicated to the design of an experimental workplace for direct measurement of the piezoelectric charge coefficient đť‘‘33. The experimental part of the work is focused on electric characterisation of lead-free piezoceramics.
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Institute of Contemporary History
Šťastná, Magdalena ; Mücke, Pavel (advisor) ; Franc, Martin (referee)
This degree work sets itself the objective to extend well-known information about the Institute of Contemporary History, bringing precise description of the first ten years of its existence. The main purpose of this work is to elaborate further on the Institute's activities from the perspective of the so-called non-scholarly component of its staff. In the first theoretical part of this work, the theme of the structure and activities of the Institute is put into the context of time, with special attention to previous perspectives and problems of historiography as a scientific discipline; in this scope a general description of historiography as such is examined. Subsequent chapters characterize the methods of examination in the field of contemporary History in the U.S.A, France, Germany, Austria, Great Britain and Poland. It also gives a rough outline of changes in topical and geographical analysis as manifested in the attempt of specialisation in the above mentioned countries. In regards to the management of the Institute, the next chapter deals with the institutional structure of The Academy of Science of the Czech Republic. The methodological part of this work is focused on the clasification of the concept of a reaserch project including relevant expectations and objectives; it describes...
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