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Species requirements on the structure of European mountain Norway spruce forest
Suderová, Natálie ; Čada, Vojtěch (advisor) ; Janda, Pavel (referee)
The aim of this bachelor thesis is to summarize conteporary studies about the biological and ecological characteristics and demands of the plant, animal and fungi species inhabiting montane Norway spruce forests, especially those of the red-list species.
An extensive systematic review was conducted as a part of this study, with a systematic research of Web of Science database, finding science studies containing key words referencing to high montane spruce forest and biotope demands of organisms. Out of a total 475 studies found in a Web of Science database, 57 studies were chosen with objectiv criteria, and 44 were cited in the bachelor thesis.
Bachelor thesis chapters were dedicated to functional groups of organisms, as often found in studied literature, i.e. vascular plants, fungi, lichenes and epiphytes, arthropods and nematodes, birds, mammals and amphibians.
Several structural key elements were found to be significant for the abundance, biodiversity and species composition of organisms inhabiting high montane spruce forest. These key elements are forest structure, deadwood, admixture tree species and environment pollution.
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Animal personality structure in offspring
JANDA, Patrik
The aim of this work was to build breeding pairs of Endler's guppy (Poecilia wingei), to determine their characteristic traits ("shy" and "bold"). Then to breed offspring from these pairs, in which the same personality traits were determined using identical procedure. Finally, the composition of personality traits observed in the offspring were evaluated, consequently, compared to their parents, their heritability was calculated. Personality traits were determined using a modified "Open Field" test (test of open environment) combined with the so-called standard emergency test (test for measuring the time required to leave the safe shelter). Based on the measured data individuals were divided into "shy" and "bold". Then they composed "shy", "bold" and combined pairs (a pair of "shy" was composed of two "shy" individuals, a pair of "bold" of two "bold" individuals and a combined pair was composed of one "shy" individual and one "bold " individual). After breeding offspring of these pairs, their personality traits ("shy" and "bold") were determined in a similar way. By evaluating the results, the heritability of these traits was calculated. Moreover, during this experiment, individual preferences and positions in the column of water were also monitored when inserted into an experimental aquarium. I also examined whether it is possible to increase the number of offspring by creating a more active ("bold") pair, a less active ("shy") pair or a combined pair.
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Poly(Methylene Blue) Modified Carbon-based Electrodes for Electrochemical Detection of Hydrogen Sulfide
Zlámalová, Magda ; Janda, Pavel ; Nesměrák, K.
A comparative electrochemical study has been carried out of the electropolymerization of phenothiazine derivative, methylene blue (MB). Electrochemical properties of resulting electrocatalytically active methylene blue polymer (pMB) have been studied on three various carbon-based substrates: basal plane of highly oriented pyrolytic graphite (HOPG), pencil-graphite electrode (PGE) and carbon fibre micro electrode (CFE). Electrodes modified with the polymer (HOPG/pMB, PGE/pMB and CFE/pMB) have been prepared by potential cycling in aqueous electrolyte solution containing dissolved monomeric methylene blue. Electrocatalytic activity of three developed electrode systems towards hydrogen sulphide has been compared. Developed electrodes have been further investigated as potential sensors for sulfhydryl-containing compounds.
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Software Support for Projects Management
Janda, Petr ; Kreslíková, Jitka (referee) ; Květoňová, Šárka (advisor)
This project describes design and implementation of project management information system support, mainly for IT organizations. It includes informations about basic facts in project management and mainly about Rational Unified Process, the modern metodology which is well usefull in today changeable environment. System is implemented in Microsoft Visual Studio 2005 with support of Microsoft SQL Server 2005 and consists of ASP.NET presentation and of DLL library written in C# language. Information system provides support for project planing and management. System work in standard internet browsers and is very usefull for geografically devided teams.
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Positional Motion Control by means of 8bit uP
Janda, Petr ; Holý, Miroslav (referee) ; Matoušek, Radomil (advisor)
This thesis deals with positional control of DC motor Icla D065 of company SIG Positec Automation GmbH with aid of CAN-Bus and CANopen protocol. Individual parts describe general principle and standards of CAN-Bus and international normalized higher-level protocol CANopen for systems control. For control this motor was used microcontroller PIC18F4685 from company Microchip and developmental environment MPLAB® IDE. With used C language was made program for MCU control communication with a motor by support of CANopen protocol and its motion control. The result of this thesis will be used in solution of research project Intelligent Systems in Automation.
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Steady state and short-circuit conditions in 110kV E.ON network fed from Čebín transformer station
Krutiš, Petr ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
Master’s thesis deals with computation of steady state and short-circuit conditions in 110 kV nodal area of Čebín. The first part of thesis is theoretical. There is described computation of steady state and short-circuit conditions. There is description of 110 kV nodal area of Čebín too. There are made computations in the practical part. Two types of operation of transformers T401 and T402 are evaluated. The transformers operate independent at first, then they are connected in parallel. Voltage conditions in substations, load of lines and transformers, power losses and short-circuit resistance of substations in 110 kV nodal area of Čebín are evaluated based on the computations. There are compared the both types of operation of transformers in the end of practical part.
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Steady state and short-circuit conditions within E.ON 110kV power network at bridge operation of transformers T401 and T402 in 400/100kV transformer station Čebín
Klobučník, Jozef ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
Master’s thesis deals with computation of steady state and short-circuit conditions in the 110 kV distribution network in the nodal area of Čebín. Computations are done during independent operation and bridge operation of transformers T401, T402 in transformation station Čebín with proposed configuration of network. Additional computations of steady state during specific operating conditions such as (T401 outage, disconnection of line 5553) were done during network operation in bridge operation of T401, T402. Voltage conditions in substations, load of 110kV lines and 400/110 kV, 110/HV kV transformers are evaluated based on the computations of steady state. Short-circuit resistance of substations is being evaluated with the aid of calculations of short-circuit conditions. There is a comparison and processed results of computations during independent operation, bridge operation, special operational states and proposed technical measures of operation in bridge operation in the end of the thesis. Theoretical part of the master’s thesis deals with the description of 110 kV distribution networks, theory of calculation of the steady state of electric system with the aid of Newton iterative method a calculation of single-phase and three-phase short-circuit current with the aid of method of symmetrical components.
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Steady state and short-circuit conditions within E.ON 110 kV power network at parallel operation of nodal areas of Otrokovice substation and Sokolnice substation
Mikulinec, René ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
This thesis deals with the steady operation and short-circuit conditions in the 110 kV network E.ON in a separate and parallel operation of nodal areas of Otrokovice substation and Sokolnice substation. The theoretical part is devoted to the calculation of steady state high-voltage systems using Newton's iterative method, transient phenomena that may occur in the power system short-circuit calculations and theories. The practical part deals with the actual calculations of steady state and short-circuit conditions in a separate and parallel operation of nodal areas Sokolnice-Otrokovice, which were calculated using the dispatching program. These calculations are then evaluated for possible use of involvement in actual operation. At the end there are suggestions on operational measures in the network 110 kV.
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Stabilized operation and short - circuit conditions within E.ON 110 kV power network supplied from Čebín 110kV switching station, during the period of 2011
Chrástek, Radim ; Janda, Petr (referee) ; Blažek, Vladimír (advisor)
The aim of this thesis is to project an operation of bridge connection in distribution network in Čebín’s nodal area. The main task is to check a fulfilment of voltage tolerance in distribution substations 110 kV, load transformer control (400/110 kV, 110/VN kV), distribution power line 110 kV control and short - circuit conditions control. Relevant calculations are performed by dispatching control system, which works with the actual parameters of all distribution network‘s 110 kV facilities. The theoretical part of this thesis is devoted to the way of the calculation of stabilized operation and the short-circuit conditions. In practical part, first we perform an analyse of stabilized operation and the short-circuit conditions of distribution network 110 kV in actual operation. Next step deals with bridge connection design and analysing its operation. The operation of bridge connection is verificated even in specific conditions (disturbance state, increased load). The next section evaluates the results of the calculations. First we deal with actual operations evaluation and proposed the bridge connection. In the next section we evaluate the operation of the bridge connection in the specific operating conditions. Finally, we evaluate the losses in the distribution network 110 kV. If the calculations of the stabilized operation or the short-circuit conditions of distribution network discovers that some of its elements are overloaded, we propose changes to ensure safe and reliable operation of the distribution network.
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