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Energy utilization of sewage sludge
Poláková, Annamária ; Ferdan, Tomáš (referee) ; Frýba, Lukáš (advisor)
This bachelor’s work discusses the origin and composition of the sludge. The composition of sludge is given by legislation, as well as its treatment and processing. Sludge shall be adjusted in order to be used on agricultural land, landfilled, incinerated, etc. The sludge processes are described further in this work. Sludge disposal options are varied, but not everywhere equally represented. This is represented in chapter where treatment of sludge in Czech Republic and abroad are compared, illustrated in chats. The most extensive and most common method of disposal of sludge is application on the ground and burning. Usable energy is obtained by burning the sludge.
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Energy utilization of sewage sludge
Poláková, Annamária ; Ferdan, Tomáš (referee) ; Frýba, Lukáš (advisor)
This bachelor’s work discusses the origin and composition of the sludge. The composition of sludge is given by legislation, as well as its treatment and processing. Sludge shall be adjusted in order to be used on agricultural land, landfilled, incinerated, etc. The sludge processes are described further in this work. Sludge disposal options are varied, but not everywhere equally represented. This is represented in chapter where treatment of sludge in Czech Republic and abroad are compared, illustrated in chats. The most extensive and most common method of disposal of sludge is application on the ground and burning. Usable energy is obtained by burning the sludge.
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Cold hardiness of larvae of the fruit fly, \kur{Drosophila melanogaster} (Diptera: Drosophilidae)
KORBELOVÁ, Jaroslava
We assessed survival of larvae of the fruit fly, Drosophila melanogaster at low temperatures (0°C and 5°C) after rearing them under seven different acclimation regimes. Larvae that have developed in a standard diet at 25°C showed 50% mortality after 12,6 min of the exposure to 0°C (Lt50 = 0.21 h). In contrast, larvae that have developed in a diet enriched with glycerol at 15°C, and were cold acclimated at 5°C during last two days of their development, had Lt50 = 38.6 h. It means that it was possible to increase the Lt50 at 0°C more than 180-fold using simple manipulations with rearing temperatures and diet composition. The physiological differences in duration of larval development, fresh mass, dry mass, hydration and total contents of proteins, lipids and glycogen between the larvae belonging to different acclimation variants are described. The samples for future detailed metabolomic analysis were prepared.
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