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Methods of radioactive radiation measurement
Šugra, Marián ; Sekora, Jiří (referee) ; Chmelař, Milan (advisor)
This thesis includes a survey of radiation measurement. It describes principle of methodes for it´s measuring with their principle together. Fixates at methods uses on medical workstations. A general nucleus of this thesis is proposition quantimeter with Geiger Muller´s tube. Contains terms at single quires of quantimeter. This equipment is powered by battery and it is assigned for some medical premises. This device will be signalized overrun beforehand adjusted value.
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Printed chemical sensors of UV light
Fanglová, Michaela ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
The main task of the bacherol´s thesis was to prepare a photosensitive layer reacting to the radiation dose with a color change. And to calibrate the prepared dosimeters to the required values of the radiation doses of the UVB radiation. This bacherol´s thesis is about light dosimeters, which are based on photochemical reactions. These reactions take place in a thin polymer layer. The experimental study focoused on the preparation and application of photosensitive compositions. These prepared dosimeter compositions were exposed to different doses of UVB radiation, where the color response to the exposure was monitored.
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Design of Dosimeter
Navrátilová, Sára ; Sládek, Josef (referee) ; Fridrichová, Eva (advisor)
The task of this bachelor thesis is to create a design of dosimeter. This work deals with analysing the current state of the market. The goal is to create a design which will comply with technical, ergonomic and aesthetic requirements of the task.
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Evaluation of patient dose in mammography
Polášková, Markéta ; Sekora, Jiří (referee) ; Kolářová, Jana (advisor)
Breast cancer presents serious epidemiological problem, in result of which die more than 2 000 czech women every year. Screening mammography is one of the most expanded and most effective examinations for early detection of this desease but one has to take into account an inconsiderable risk connected with the procedure based on X-ray ionizing radiation. This diploma thesis deals with evaluation of the dose absorbed by the tissue. It contains the description of evaluation of the average dose in glandular tissue on PMMA phantom, as well as results of the measurements on conventional and digital mammograph. A data file with exposure parameters from mammography screening is included and interpreted. Also the Monte Carlo method was used for the dose evaluation, the thesis contains the brief description of the method, concept of analysis model in mammography and results of simulations.
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Effect of a nuclear power plant in terms of radiatin burden
Vániš, Jiří ; Procházka, Zdeněk (referee) ; Belatka, Martin (advisor)
This text deals with ionizing radiation affecting nuclear power plant personnel and surrounding population. Irradiation limits of radiological industry personnel are also mentioned along with ways of protecting them and checks on absorbed ionizing radiation dose. In conclusion, a nuclear power plant, as a source of ionizing radiation, and its effects on contamination of water sources and gas vents are evaluated. The next part be engaged problematical of storage nuclear waste from the time, when is removed the nuclear waste from nuclear reactor, trough permanent storage.
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Printed ozone dosimeter
Védlová, Petra ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
This diploma thesis deals with ozone measurement methods, especially focusing on opto-chemical methods, when the color change of the sample is examined. Moreover it deals with dyes that are sensitive to ozone and their degradation kinetics. In the experimental part kinetics of dyes Orange I, Orange II and Indigo carmine is examined, These dyes are prepared in the form of ink of different composition. These inks are applied to diverse substrate materials by the material printing method, further by using a Baker film aplicator and in the end by the screen printing method. The properties of the samples are evaluated as well as factors affecting their degradation.
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Optical fibre dosimeter
Jelínek, Michal ; Mikel, Břetislav
In the nuclear facility, there is currently a demand for optical methods of measuring gamma radiation. For these measurements, we need very robust measurement methods and sophisticated equipment. Silica optical fibres coupled to crystal scintillators are suitable and we present results from their implementation. The scintillators detect gamma radiation and the silica optical fibres transmit the scintillation light from the scintillator to the detector. We used commercially available silica optical fibres up to 1.5 mm in diameter with different numerical apertures to transmit visible light from the scintillators to the detector.
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Comparison of dosimeters and radiometers for the laic public
DŽURNÝ, Vladan
This work aims to compare the technical parameters of individual measuring devices (radiometers and dosimeters) for the general public with similar professional equipment used by SÚJB České Budějovice and HZS České Budějovice and based on the comparison to answer the research question whether dosimeters and radiometers are available for the general public. able to compete with similar equipment used by SÚJB České Budějovice and HZS České Budějovice. The practical part of the work is focused on the quantitative processing of selected technical parameters of all selected investigated devices using multicriteria analysis and their comparison using CLA analysis. Based on the mentioned methods, the aim of the work is fulfilled and the research question is answered. For comparison, he was selected from professionals as a similar device URAD 115 (HZS České Budějovice) and FH 40 G (SÚJB České Budějovice). The following device was chosen from the devices intended for the general public: Gamma Scout, RD1008, SOEKS 112, BR 6, BR 9B and VOLTCRAFT Gamma-Check-A. The results of multicriteria and CLA analysis showed that the investigated devices intended for the general public are not able to compete with professional devices URAD 115 and FH 40 G. It was found that the investigated devices intended for the general public are characterized by lower weight and ability to detect beta radiation. Furthermore, the fact that the Gamma Scout device is able to detect alpha radiation in addition to the above radiation. The results of the work contribute to the evaluation of the usability of the investigated devices for the purposes of SÚJB České Budějovice and HZS České Budějovice in solving a radiation emergency. It also helps to assess the quality of the devices examined.
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Printed chemical sensors of UV light
Fanglová, Michaela ; Čeppan, Michal (referee) ; Veselý, Michal (advisor)
The main task of the bacherol´s thesis was to prepare a photosensitive layer reacting to the radiation dose with a color change. And to calibrate the prepared dosimeters to the required values of the radiation doses of the UVB radiation. This bacherol´s thesis is about light dosimeters, which are based on photochemical reactions. These reactions take place in a thin polymer layer. The experimental study focoused on the preparation and application of photosensitive compositions. These prepared dosimeter compositions were exposed to different doses of UVB radiation, where the color response to the exposure was monitored.
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