National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Barviva v potravinovém průmyslu a jejich získávání
Martinek, Štěpán
This bachelor thesis contains an overview of the most used natural, nature-identical and synthetic food colorants. Colorants are divided into groups according to their chemical structure (polyene colorants, indole colorants, triphenylmethane colorants etc.). Acquisition of colorants by extraction techniques is shown in several representatives of natural colorants. The thesis also contains some most frequently used analytical methods (UV/VIS spectrometry, chromatography, electrophoresis and polarography), which are used for detection and determination of food colorants. Terms of coloring foodstuffs are defined by the applicable laws of the Czech Republic and the European Union, which are also part of this work.
Vliv použitého lepidla na pevnost konstrukčního spojení DOMINO
Martinek, Štěpán
The aim of diploma thesis is to discover the effect of used glue on strength of Domino structural joint and on the experiment basis determine whether different thermal conditions affect the strength of glued joint and if this influencing is significant or not. Two types of samples were made for this experiment with difference in used glue. These samples were exposed to three different temperatures. Bending moment and rigidity coefficient was identified at particular joints.

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