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Optimalization of Exhaust Manifold for SI Engine
Prášek, Martin ; Beran, Martin (referee) ; Svída, David (advisor)
The master thesis is focused on optimizing existing or proposal for a new exhaust tracts on the Volkswagen Polo moving series rally-cross A1 division. The car is powered by concern, water-cooled, atmospheric engine capacity 1599 ccm. To achieve the objectives of the lessons are applied as a theoretical nature (analytical calculation), especially the advanced approaches of the software environment from the firm Lotus. Exhaust treatment systems are designed to suit all rules FIA Sports Association.
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Natural flooding in Lužnice floodplain - an holistic approach
Pithart, David ; Montagová, Martina ; Hartvich, P. ; Černý, R. ; Prach, K.
Natural flooding was analysed in the Lužnice River floodplain in a holistic approach. Benefits of natural flooding can be summarised as folows: 1. Water retention is increased due to the soil absorption, evapotranspiration, filling of oxbows, pools and natural depressions and finally the space between the river terreces. Real flood event are analysed here in terms of water distribution among these processes. 2. Natural flooding reduces the loss of ionts from the watershed by flowing the river outflouw and loss of carbon loss by slowing the decomposition processes. 3. Flooding creates and maintains floodplain geobiodiversity by re-forming of floodplain subsystems and differentation of its impact on these subsystems. For these reasons, maintaining and enchenging of natural flooding seems to be a prerequisite of sustainable management of riverine landscape.
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Vodní a hybridní plazmatrony s plynovou a vodní stabilizací
Hrabovský, Milan
Plasma torches with water-stabilized arc (Gerdien arc) are utilized in plasma processing for specific applications. In water-stabilized torches an oxygen-hydrogen plasma jet is produced. The torches are characterized by very low mass flow rates and high power. Plasma enthalpy is thus several times higher than enthalpy of plasmas generated in gas-stabilized torches. High enthalpy is accompanied by very low plasma density. Also other plasma parameters substantially differ from the ones in gas torches. New type of plasma torch with combined stabilization of an electric arc by water vortex and gas flow was investigated. This hybrid water/gas stabilization offers possibility of adjustment of plasma jet parameters in a wide range from high enthalpy, low density plasmas typical for liquid stabilized torches to lower enthalpy, higher density plasmas generated in gas stabilized torches.
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Continual helicoidal mixer
Radoš, Pavel ; Malach, František (referee) ; Malášek, Jiří (advisor)
This work contains a proposal for constructions and workings of a worm mixer of clay, lime, cementand fly ash with water for delivery quantity 18 tons per an hour. The introduction describes problems of mixing and mixers in the preparation of building materials. I have mentioned calculation of the main proportions and drive under the relevant norms and self-fortress control of the stresssed parts of mixer. Drawing documentation is worked into the ACad program and contains the configurations of the proposed machinery and detailed subassembly of important parts of worm mixer.
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Optimalization of Intake Manifold for SI Engine
Vávrovec, Jiří ; Beran, Martin (referee) ; Svída, David (advisor)
This thesis focus with construction design intake manifold of four stroke engine rallyecross division 1A. For improvement observant come into operating here derive benefit from theory tuned supercharging, which is based on tuning longitudes sucking conduit. Derive benefit woolen effect. Driving unit is here used four cylinders, water-cooled, atmospheric combustion engine from car VW Polo 6N GTI. Design is created so, to answer condition division 1A.
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Concept of Energetically Sufficient Housing (ESH) Plan
Hlavsa, Tomáš
At a time when about 1.6 billion people living without a regular supply of electricity and even 2 billion people without power and water supplies, appear to be energy selfsufficient buildings one of the solutions of this global problem. Understanding of the principles and design rules of energy self-sufficient buildings could help to promote more such buildings under construction. The following text try defined these principles and rules.
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The influence of therapy by Vojta reflex locomotion method on functional abilities of immobile seniors
Černá, Gabriela ; Smékal, David (advisor) ; Zounková, Irena (referee)
This project assesses effects of four -week active rehabilitation combined with Vojta reflex stimulation on mobility of bed-bound seniors. Sixteen female patients were divided into two groups of eight members, i.e. tested group and control group. Both groups were put through training focused on self-support, maintaining or enhancement of range of movement, strengthening of weak muscle groups, stability training, practicing sitting up and lying down from sitting position, and walking in the high walking frame in the case of stronger patients. Besides that the tested group underwent Vojta reflex stimulation (global model of reflex turning), coordination and stability exercise and exercise with rehabilitation tools (elastic band, over ball, small ball, water bottle). In the beginning and in the end of the project the EMS (Elderly Mobility Scale), BI (Barthel Index), and MMSE (Mini-mental State Examination) scales were tested as well as ability to turn from back to side and stability in the sitting position. Statistical comparability of both groups was proved true in the beginning of the therapy by Mann-Whitney test. There was a noticeable tendency towards higher probability of enhancing measured scores in the tested group compared to the control group after the therapy. In case of the EMS this probability was...
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Improvement of water resources management
Hejtman, Jan ; Koška, Petr (referee) ; Fiala, Alois (advisor)
The aim of this thesis is a lay of the business processes in Vodárenska akciová společnost, a.s. In theoretical part of the thesis are describe characteristics, mapping and modeling of processes in this company. In practical part are mapping processes, which this company make in order for their customers and daily processes, whereby sustains own infrastructure.
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Steam generator for nuclear power plant with fast reactor
Karička, Radoslav ; Nesvadba, Lukáš (referee) ; Šen, Hugo (advisor)
The aim of the project is to design a steam generator in which the sodium flows pipeline hand, and on the other hand, water flow and water vapor (H2O). The main idea of this thesis is to propose such a steam generator, to avoid or eliminate the possibility of adverse reactions of sodium with water and, if this phenomenon occurs, thus minimizing the damage caused by this reaction. The work contains information on the implementation of steam, steam option, the necessary calculations for the design and construction and evaluation.
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