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Consequences of deliberate chlorine leakage from Spolchemie plc, Usti nad Labem, and Spolana plc, Neratovice
KADLEC, Zdeněk
Most of the current population cannot imagine their contemporary lifestyle without chemical products. This requires the chemical industry, which in some areas of our country is well developed. Spolana and Spolchemie are large chemical companies, which store huge amounts of chlorine. The aim of this study was to evaluate the simulation of leakage of chlorine from Spolana and Spolchemie using TerEx software and see if the two businesses can be important sources of risk for the population in terms of leakage of chlorine. Results of this study imply much larger consequences that would be caused by potential leakage of chlorine through intentional misuse. This possibility should be of interest to not only integrated emergency services and members of crisis management teams, but also the citizens themselves. Preparing for such an event and knowledge of things in terms of prevention is very important.
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Preparation of a presentation for popularisation of computer physics - area of computer simulations
HARVALÍK, Jaroslav
The purpose of the submitted paper is to make the computerized physics more popular among the potential university/college students, namely in the areas of the simulation. Simultaneously, that work is intended to act as explanatory notes of the additional presenation which is composed under the same purpose as the above mentioned paper. It contains the basical terms of the computerized physics. Moreover, the overview of programs for creation of models and simulations as well as resulting examples have been included. Finally, the areas of the computerized simulations are listed, accompanied by the synoptic examples.
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Computer simulation in plasma physics
SOUKUP, Vojtěch
This thesis is in the form of a background research. It contains pictures, schemes and colored graphs. The aim is to chart basic findings in the area of progress in computer physics and the posibility of their subsequent usage or the simulation of real problems in plasma physics. The component of my thesis is a comparison of particular accesses in the course of plasma simulation.
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The evaluation of the problems of verification isodose distribution - the simulation of the treatment fields on simulator Acuity.
KOCOUREK, Michal
The verification of the treatment fields{\crq} location on a simulator is one of the main activities within the field of radiation quality. Simulation pictures are compared with reference pictures (DRR). during the simulation. If a patient{\crq}s position during the simulation differs from the reference picture, the deviations are shown in individual axes. The aim of a radiotherapy assistant is to reduce the extent of those deviations to a minimum, or at least to the range of tolerance given in a tolerance table. The accuracy of the setup is an important factor in the process of quality assurance in radiotherapy. There are two methods available for the assessment of deviations on a simulator: - the method of anatomical structures comparison - the method of picture fusion In the case of the method of comparison of anatomical structures, the level of equivalence of the pictures is ascertained by using the multi-leaf collimator{\crq}s lamellas or the degree scale shown in the picture. Further verification of the accuracy of the setup is done in the individual radiotherapists{\crq} workplaces, specifically the linear accelerator and/or the cobalt irradiator, where the DRR is mostly compared with the portal picture. The method of comparison of the anatomical structures is used more frequently at the Radiotherapeutic Clinic of the České Budějovice Hospital than the method of picture fusion.
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Measurement, simulation and calculation of hydraulic quantities of a pump modul
MARHOUN, Lukáš
This bachelor thesis describes the simulation of a fuel pump modul , function tests of the fuel pump modul and evaluation of this simulation. In general, the thesis deals with the application of computer technology in the product development in the automotive industry. It describes application of the CAD/CAE systems, includes a summary of abbreviations used in this area of technology and a list of recommended internet links.
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Analysis of deviations in the localization of radiation fields in the course of radiation by means of EPID in patients with tumours in head and neck
GRABMÜLLEROVÁ, Hana
Oncology diseases are serious and alarming problems in the world and our country, too. The most common ENT tumours affect larynx, oropharynx and hypopharynx. The factor which causes the occurrence of tumours is smoking. Chronic thermal excitation, pH changes of mucous membrane and vasoconstriction caused by nicotine can also participate in the occurrence of malign changes. Among other etiological factors belong: alcohol, U radiation, ionizing radiation, transport and industry exhalations, nutritional exhaustion, and immunodeficiency. Current treatment includes surgery, radiotherapy, cytostatic chemotherapy, hormone therapy, bio therapy and their combinations. The prosperity of oncology patients is 22% by surgery, 18 % by radiotherapy and 5% by chemotherapy. Radio therapy remains the basic treatment of oncology diseases. According to the newest knowledge and requests its quality is ensured. The accuracy of radiation treatment and the increases in therapeutic results are developed. The risk of over dosing, which leads to the occurrence of many complications, and also the risk of under dosing, which decreases the chance of the complete cure, decline. Quality assurance is currently carried out on electronic portal image device EPID (Electronic Portal Imaging). The reason of permitted small deviation (0,3cm) in tumours of head and neck is the proximity of critical organs to the target volume and often small radiated volumes. The aim of the thesis was the analysis of the group of patients with the tumours of head and neck treated at oncology department in Nemocnice České Budějovice, a.s. (Hospital in České Budějovice Inc.) by the form of portal evaluation. The hypothesis was average deviation 0,3cm in localization of radiated fields in the evaluated group. The analysis of deviations in localization of radiation fields in the course of radiation of evaluated group was carried out. The gained deviations were compared with the data in professional literature. The methodology included the characteristics of evaluated group of patients according to radiation posture, fixation of a patient, radiation technique, localization of tumour, the extent of disease TNM, patient´s age and sex-a man, a woman. The evaluation was carried out by means of EPID for particular radiation fields. Statistically, maximum, minimum and average deviation in localization of radiation fields was evaluated and the results were compared with the hypothesis by means of the test {$\psi$}2. The presupposed hypothesis was not proved. From the measured data it was found out that in practice acquired deviations are smaller than deviations presupposed by the hypothesis. The important part of radio therapeutic practice is the programme of Quality Assurance (QA). The results will serve the workers of radiation oncology in Nemocnice České Budějovice, a.s. (Hospital in České Budějovice Inc.) for evaluation of radiotherapy quality in the tumours of head and neck.
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3D displaying software
ŽALUDOVÁ, Lenka
The bachelor thesis deals with three-dimensional imaging. It tries to describe and compare simultaneously the latest software for 3D imaging and to set metric/criteria of classification for categorization.
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Didactical conception of Game in Civic Education
MIKASOVÁ, Jitka
The thesis concerns the didactics of the civics. It focuses on a game in tea-ching. The conception of a game in the didactics is a basic phenomenon of the teaching at the second level at a basic school. First, the thesis includes a theoretical and interpretative part. It is di-vided into chapters and subchapters. Its focus is different kinds of games and the use of them in teaching of the civics. The topics of the chapters are didactic games, simulation, education by experience, a list of different games, dramatic and action games, language games, and the choice of games, respectively. There is a list of games in each chapter and their practical use in teaching. There are also given definitions in some parts. Second, there is a part concerning the practical evaluation of the games after their previous use during my teaching within my work experience at a basic school. The aim of the thesis is the attempt to draw a conclusion whether the pupils accepted the individual games during my teaching or not, and whether the games have brought any benefit to them.
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Reconstructed 3D Microstructure and Effective Diffusivity of a Zeolite-Polyimide Mixed Matrix Membrane
Čapek, P. ; Hejtmánek, Vladimír ; Fryčová, M. ; Sysel, P. ; Kočiřík, Milan ; Brabec, Libor ; Zikánová, Arlette ; Bernauer, B. ; Fíla, V.
In our work we focused on a two-phase system consisting of the polyimide matrix synthesized from the monomers 4,4’-(hexafluoroisopropylidene)diphtalic anhydride (6FDA) and 4,4’-oxydianiline (ODA), and silicalite-1 [3, 4]. Its microstructure on the scale capturing the morphology of silicalite particles was reproduced by means of stochastic reconstruction. Then, effective diffusivity of an arbitrary fluid in the reconstructed composite material was determined by exploiting random walk simulation. Resulting values were compared with the corresponding values obtained using two traditional correlations for conductivity of composite materials. Image processing and analysis as the first step of stochastic reconstruction was a bit inexact in terms of an estimation of the volume fractions of both phases.
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