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Shortwave diathermy
Faltýnková, Květoslava ; Hejč, Jakub (referee) ; Kolářová, Jana (advisor)
Bachelor thesis deals with high-frequency heating of tissues and the influence of electromagnetic fields on living tissue. Describes the capacitive and inductive method, which are compared by calculating. The goal is to create an application for simulation of vysokofrekvečního heating of tissues in MATLAB. The application includes four models. The output of the work are simulated waveforms of the intensities and heats the tissues.
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Vitality in the architectonic environment
Eyer, David ; Horáček, Martin (referee) ; Hudec, Mojmír (referee) ; Kyselka, Mojmír (referee) ; Žabičková, Ivana (advisor)
More and more research studies are being conducted on the quality of architectural space as a factor affecting our mental, social and physical health. In the past, this topic was often overlooked in its complexity. The establishment of the specialized fields of building biology, biophilic architecture and the works of Christopher Alexander and Nikos Salingaros now allow us to consider various facets of this subject. This dissertation aims to analyse the topic of vitality in architectural space by studying the abilities and perceptions of its users. Therefore its aim is not to develop a new theory of “vitality-enhancing architectural space”, but to describe how this phenomenon is perceived by the users themselves. Users can provide feedback on which features of architectural space they see as the most important for the feeling of vitality. These features have been hierarchically organized based on their perceived importance, analysed and described in detail to allow their relatively easy application in practice. This dissertation will also allow a comparison with other existing works on the studied topic.
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The effect of electromagnetic fields on cell structure
Urbánek, Jiří ; Fiala, Pavel (referee) ; Vlachová Hutová, Eliška (advisor)
The main concern of the work is researching the influence of electromagnetic field on cellular structures. Cellular structures is a general term for all the organelles placed in a cell. In our 2D model we take into consideration just the fundamental organelles such as cell membrane, cytoplasm and cell nucleus. The aim of the work was to get acquainted with the outer environment into which we had placed the 2D model of the cell and on which we had applied the magnetic field. The work contains the results gained by numeric modelling in the physical programme COMSOL. These results prove the theoretical presumption.
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Astrophysical black holes embedded in organized magnetic fields
Karas, Vladimír
Large-scale magnetic fields pervade the cosmic environment where the astrophysical black holes are often embedded and influenced by mutual interaction. In thiscontribution, we outline the appropriate mathematical framework to describe magnetized black holes within General Relativity, and we show several examples of how these can be employed in the astrophysical context. In particular, we examine the magnetized black hole metric in terms of an exact solution of electro-vacuum Einstein-Maxwell equations under the influence of a non-vanishing electric charge. New effects emerge: the expulsion of the magnetic flux out of the black-hole horizon depends on the intensity of the imposed magnetic field.
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Evaluation of thin discontinuities in planar conducting materials using the diffraction of electromagnetic field
Savin, A. ; Nový, F. ; Fintová, Stanislava ; Steigmann, R.
The current stage of nondestructive evaluation techniques imposes the development of new electromagnetic (EM) methods that are based on high spatial resolution and increased sensitivity. In order to achieve high performance, the work frequencies must be either radifrequencies or microwaves. At these frequencies, at the dielectric/conductor interface, plasmon polaritons can appear, propagating between conductive regions as evanescent waves. In order to use the evanescent wave that can appear even if the slits width is much smaller that the wavwelength of incident EM wave, a sensor with metamaterial (MM) is used. The study of the EM field diffraction against the edge of long thin discontinuity placed under the inspected surface of a conductive plate has been performed using the geometrical optics principles. This type of sensor having the reception coils shielded by a conductive screen with a circular aperture placed in the front of reception coil of emission reception sensor has been developed and 'transported' information for obtaining of magnified image of the conductive structures inspected. This work presents a sensor, using MM conical Swiss roll type that allows the propagation of evanescent waves and the electromagnetic images are magnified. The test method can be successfully applied in a variety of applications of maxim importance such as defect/damage detection in materials used in automotive and aviation technologies. Applying this testing method, spatial resolution can be improved.
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Vitality in the architectonic environment
Eyer, David ; Horáček, Martin (referee) ; Hudec, Mojmír (referee) ; Kyselka, Mojmír (referee) ; Žabičková, Ivana (advisor)
More and more research studies are being conducted on the quality of architectural space as a factor affecting our mental, social and physical health. In the past, this topic was often overlooked in its complexity. The establishment of the specialized fields of building biology, biophilic architecture and the works of Christopher Alexander and Nikos Salingaros now allow us to consider various facets of this subject. This dissertation aims to analyse the topic of vitality in architectural space by studying the abilities and perceptions of its users. Therefore its aim is not to develop a new theory of “vitality-enhancing architectural space”, but to describe how this phenomenon is perceived by the users themselves. Users can provide feedback on which features of architectural space they see as the most important for the feeling of vitality. These features have been hierarchically organized based on their perceived importance, analysed and described in detail to allow their relatively easy application in practice. This dissertation will also allow a comparison with other existing works on the studied topic.
|
|
|
Shortwave diathermy
Faltýnková, Květoslava ; Hejč, Jakub (referee) ; Kolářová, Jana (advisor)
Bachelor thesis deals with high-frequency heating of tissues and the influence of electromagnetic fields on living tissue. Describes the capacitive and inductive method, which are compared by calculating. The goal is to create an application for simulation of vysokofrekvečního heating of tissues in MATLAB. The application includes four models. The output of the work are simulated waveforms of the intensities and heats the tissues.
|
|
|
The effect of electromagnetic fields on cell structure
Urbánek, Jiří ; Fiala, Pavel (referee) ; Vlachová Hutová, Eliška (advisor)
The main concern of the work is researching the influence of electromagnetic field on cellular structures. Cellular structures is a general term for all the organelles placed in a cell. In our 2D model we take into consideration just the fundamental organelles such as cell membrane, cytoplasm and cell nucleus. The aim of the work was to get acquainted with the outer environment into which we had placed the 2D model of the cell and on which we had applied the magnetic field. The work contains the results gained by numeric modelling in the physical programme COMSOL. These results prove the theoretical presumption.
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