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Extension of the gym - preparation and organization of construction
Langrová, Petra ; Věrný, Luboš (referee) ; Vlčková, Jitka Laura (advisor)
The diploma thesis deals with the solution of selected parts of the architectural and technological project of the extension of the gym in Krnov, focusing on realization prefabricated reinformed concrete frame and roof deck. For these technological steps the control and test plan and health and safety will be prepared. For complet object SO 03 the schedule, budget, mechanical assambly, principles and organization of construction will be prepared.
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The influence of enzymes applied on processed sugar beet bulbs on the quality of saturated juice
Langrová, Petra ; Pulkrábek, Josef (advisor) ; Ilona, Ilona (referee)
The thesis focuses on the determination of dextran presence and its potential amount in sugar made semi-products. Dextran is a polysaccharide which is created on a sugar beet tuber due to inappropriate storing, because of low temperatures or wound of beet tissue, which is subsequently prone to infections caused by Leuconostoc mesenteroides microorganism. The infection results in creation of polysaccharides and other secondary products which have a negative influence on technological processing of beet. Levan and dextran create the highest amount of these polysaccharides in sugar beet. They significantly increase the viscosity of sugar juice. It is subsequently seen on crystallization of calcium carbonate during the second saturation and this causes the deterioration of filterability. In case of dextran or other polysaccharides presence other problems arise in the technological process of sugar production. For its elimination enzymatic hydrolysis is used with the aid of dextranase or alfa amylase. This element splits dextran polysaccharide into smaller oligosaccharids which are not caught in filtration device and therefore do not cause reduction in production capacity. Commercially accessible dextranase; however, is financially demanding so that there are researches trying to find more economical ways. This diploma thesis evaluates the presence of dextran in extracted juice by means of ICUMSA GS8-19 (year 2009). The method evaluates the presence of dextran in diffused, heavy and II. saturated juice. The research was focused on determination of alkalinity, pH, sedimentation and filtration coefficient, polarization, sugar content and purity. The aim of this thesis is to evaluate the correlation between recorded numbers and the application of the two enzymes which are used for removal of these problems. After completion of the experiment and evaluation of measured results in operating laboratory of sugar factory Tereos TTD Dobrovice, connection among laboratory measured data was not proved. Our recorded data did not prove reciprocal relation. The only proved connection was about number of rinsed filters (per day) after II. saturation and amount of used enzymes. The amount of enzymes influences how many times per day filters must be rinsed in order to get rid of deposit. In case of high amount of dextran, filters started to be clogged by impervious layer of molecules and in case that enzymatic way was not used for elimination of this saccharide, the only solution was frequent filters rinsing or reduction in working capacity connected to subsequent prolongation of processing campaign.
Further, we proved the efficiency of alfa amylase which was used during beet processing (after New Year). This enzyme had the same impact on elimination of polysaccharides and clearance of filters. It is to say that in following campaigns it is possible to substitute financially demanding enzyme for cheaper alfa amylase.
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Extension of the gym - preparation and organization of construction
Langrová, Petra ; Věrný, Luboš (referee) ; Vlčková, Jitka Laura (advisor)
The diploma thesis deals with the solution of selected parts of the architectural and technological project of the extension of the gym in Krnov, focusing on realization prefabricated reinformed concrete frame and roof deck. For these technological steps the control and test plan and health and safety will be prepared. For complet object SO 03 the schedule, budget, mechanical assambly, principles and organization of construction will be prepared.
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