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Membrane processes using in the beer production
KAMENÍKOVÁ, Magdaléna
The aim of the Bachelor thesis is a literature review talking about the use of membrane technology in brewing. The first part is dedicated to the production process of beer primarily on the use of filtering processes and the history of their use. The second part presents a list of all membrane processes, types of membranes and membrane technologies including examples used in the production of beer or other food production of beverages. It describes their fundamental physical and chemical attributes that ensure their functionality and predispose possibilities of use. The last part is devoted to membrane technologies used in specific processes in the production of beer (for example dealcoholation of beer, separation of beer from waste yeast or cold stabilization) with the main focus on descriptions of these processes themselves, used filters and comparisons with other methods used by.
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Water mixer
Damajka, Štěpán ; Glos, Jan (referee) ; Veselý, Libor (advisor)
The aim of this bachelor thesis is to build device for mixing warm and cold water. Water mixer consists of a temperature sensor and flow sensor. Actuator devices are two-way diaphragm solenoid valves and three-way valve with servo-engine. Thesis focuses on identification system and design of a suitable controller.
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Micro cooling with Peltier cell
Brázdil, Marian ; Bogdálek, Jan (referee) ; Pospíšil, Jiří (advisor)
This work concerns detail description of thermoelectric cooling modules, principles and practical utilization of thermoelectric cooling modules. Experimental part of this work studies computer cooling. Distribution of temperature at the cold and hot side of the thermoelectric cooling module as a function of load of a processor was measured. The obtained temperatures were compared with the common cooling methods.
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Business Plan for the Establishment of Small Company
Kolářová, Ludmila ; Kratochvíl, Josef (referee) ; Mazlová, Tamara (advisor)
This thesis deals with creation of business plan for realization of food shop which con-centrates on selling pastries. This shop will offer a wide range of pastries to its custom-ers, own cold food and another products as well. The theoretical part of my thesis is devoted to simply definition of business plan, general characteristics of business and possible types of companies and also to basic re-quirements for processing of business plan. In the next part there are processed analysis of actual situation at the market. Subse-quently there is compiled specific business plan for establishment of bakery shop. As a part of this chapter there is evaluation of risks as well and the business plan of future company. At the end of this thesis there are valorized filing of the aims and verification of the hypothesis.
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Flatworms (Platyhelmintes: Tricladida) in the Czech Republik
Reslová, Marie ; Juřičková, Lucie (advisor) ; Buchar, Jan (referee)
This work focuses on the freshwater triclads and summarizes information about species occurring in the Czech Republic. Particular chapters concerned generally with taxonomy, anatomy and ecology of triclads; morphology, ecology and occurrence of each species is discussed in detail. 17 triclad species were recorded in the Czech Republic before now, some of them are considered as endemics. The majority of common triclads is determinable according to the head shape, but determination of Dugesia lugubris, D. polychroa a Polycelis nigra, P. tenuis is possible only based on the penis morphology. Some species can be regard as bioindicators, because of their narrow ecological requirements: cold water with high content of O2 - Dugesia gonocephala, Crenobia alpina, Polycelis felina; higher concentration of Ca2+ - D. gonocephala, Phagocata vitta, Planaria torva; oligotrophic standing waters - Polycelis nigra; eutrophic standing waters - Dugesia polychroa, Polycelis tenuis. Species of underground waters and springs are interesting and still unexplored ecological group of triclads.
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Induction and optimalization out-of-season spawning of spawners pikeperch (Sander lucioperca)
VLČEK, Jakub
In total, 21 pairs of pikeperch brood stock were divided into three groups and used during two out-of-season and one seasonal semi-artificial spawning. The only differences among these three groups were the length of cold water period (CWP) and spawning date. Group of earlier spawning (A) CWP = 122 days, Group of normal spawning (B) CWP = 149 days, Group of late spawning (C) CWP = 223 days). Dates of spawnings A 11.3., B 26.4., C 13.6). There were observed and assessed the main production parameters such us latency, successful spawning, fertilisation and hatching rate etc. in each group and spermatozoa quality (sampled one day after the observed spawning). In Group A and B, 100 % of fish successfully spawned. Fertilisation rate was 59.4 % (Group A) and 80.3 % (Group B). Much worse results were obtained in Group C. Only 42.9 % of fish spawned and the fertilisation rate was zero. There was no difference among the three groups in spermatozoa quality parameters. It means that the poor fertilisation rate in Group C was caused by low egg quality. According to our results we can say that it is possible to successfully spawn pikeperch earlier (before the main spawning season) with comparable result to the natural spawning season. However, it is necessary to find some better way for female stimulation to provide higher egg quality and subsequently higher fertilisation rate.
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Control of casting line
Surovec, Tomáš ; Hynčica, Ondřej (referee) ; Zezulka, František (advisor)
The thesis especially deals with creating a program for PLC to control a casting line. There is described configuration and the parameters setting of the PLC Simatic S7-300 from Siemens. The control application is created in the software tool STEP 7. Production, properties and parameters of plynosilicate are described in this work. Control of the casting line, the PLC program, the used sensors, the optimization of production per hour and mixing of cold and hot water is also described here.
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Coulomb Interactions in Electron Beams in the Vicinity of a Schottky and Cold Field Emission Sources
Liška, Ivo ; Kotačka, Libor (referee) ; Radlička, Tomáš (referee) ; Lencová, Bohumila (advisor)
Dizertační práce se zabývá problematikou výpočtu vlivu coulombovských interakcí částic na parametry emitovaného elektronového svazku v blízkosti Schottkyho a studené katody. Práce poskytuje základní předhled o problematice, popisuje vytvořené modely emisních zdrojů a metodu simulace Monte Carlo. Představuje novou metodu generování vstupních dat, která klade větší důraz na přesnou simulaci emisního procesu. Pozornost je zde věnována zejména vlivu interakcí na energiovou šířku, velikost virtuálního zdroje a jas katody v závislosti na velikosti poloměru hrotu a emisním proudu. Sledováním vývoje energiové šířky bylo zjištěno, že naprostá většina interakcí se odehrává v prostoru do několika mikrometrů od hrotu katody. Závislost spočtené celkové energiové šířky na úhlové intenzitě je ve shodě s dostupnými experimentálními daty. Spočtené energiové rozšíření vlivem coulombovských interakcí bylo srovnáno s hodnotami vypočtenými pomocí vzorců založených na analytických přiblíženích. Bylo zjištěno, že některé z nich přijatelně předpovídají trendy ale nemohou být použity pro kvantitativní odhad.
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