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Alternative sources of nuclear energy
Svoboda, Josef ; Zlámal, Ondřej (referee) ; Katovský, Karel (advisor)
In places where it is not possible to use conventional production and distribution of energy, autonomous sources take over. Most of autonomous sources use solar energy, wind energy and other renewable resources. For applications such as special missions into outer space the usage of conventional sources is not possible. Except for powering special satellites, unconventional nuclear sources are also used in autonomous unmanned objects located in distanced areas with extreme natural conditions. It is also used in unusual propulsions of ground, water and air machine. These vehicles are for example pacemaker powered by radioisotope source, submarines, aircrafts and other vehicles supplied by nuclear reactor of unconventional conception. In this bachelor thesis there are globally summarized questions connected with unconventional sources of nuclear energy with detailed description of chosen parts. This work is concerned with finding more efficient machinery for conversion of heat energy supplied by radioisotope decay to electric energy.
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Residual Contamination of Soils with Artificial Radionuclides Sr-90 and Cs-137
Kadlecová, Tereza ; Sedlářová, Barbora (advisor) ; Bruthans, Jiří (referee)
The review part of this bachelor thesis deals with sources of artificial radionuclides strontium- 90 and caesium-137, which are released into the environment mainly due to nuclear weapons tests and nuclear accidents. The most extensive contamination of the Czech Republic was caused by the Chernobyl accident in 1986. The transport of strontium-90 and caesium-137 through the environment is summarised, with emphasis on soil. In the experimental part of the work, the residual contamination of arable and meadow soil with these radionuclides was evaluated in the Veltrusy locality in relation to hydropedological properties. This site was chosen in connection with the project "Innovative methods for the detection of ultra-low concentrations of radionuclides to assess the vulnerability of drinking water sources in the event of a nuclear accident", which was carried out within the T. G. Masaryk Water Research Institute. It was found that contamination varies depending on land use, such as cultivated and uncultivated land. Strontium-90 was not measurable at either site, whereas caesium-137 was detectable at both of them. Most of the caesium-137 in the grassland soil was measured in the near-surface layer of the soil, whereas in the arable soil it was evenly distributed throughout the profile. The mobility of...
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Aktuální stav důsledků havárie černobylského jaderného reaktoru z agroekologického pohledu se zaměřením na kontaminaci zemědělské půdy
Ondračka, Tomáš
Bachelor thesis deals with the current agricultural soil contamination with radionuclides as a result of nuclear reactor accident at Chernobyl in 1986. The work is processed as a review of the literature on the issue. The thesis presents the physico-chemical properties of selected anthropogenic radionuclides. Due to the physical half-life work continues to address only radionuclides with long half-life, their transfer in the environment, focusing on the interaction of these radionuclides in the soil system. At the conclusion of this work a list of other important soil contaminants and their comparison with radio-contaminants is submitted.
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Alternative sources of nuclear energy
Svoboda, Josef ; Zlámal, Ondřej (referee) ; Katovský, Karel (advisor)
In places where it is not possible to use conventional production and distribution of energy, autonomous sources take over. Most of autonomous sources use solar energy, wind energy and other renewable resources. For applications such as special missions into outer space the usage of conventional sources is not possible. Except for powering special satellites, unconventional nuclear sources are also used in autonomous unmanned objects located in distanced areas with extreme natural conditions. It is also used in unusual propulsions of ground, water and air machine. These vehicles are for example pacemaker powered by radioisotope source, submarines, aircrafts and other vehicles supplied by nuclear reactor of unconventional conception. In this bachelor thesis there are globally summarized questions connected with unconventional sources of nuclear energy with detailed description of chosen parts. This work is concerned with finding more efficient machinery for conversion of heat energy supplied by radioisotope decay to electric energy.
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