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Study of the influence of magnetic fields on biological tissue
Vlachová Hutová, Eliška ; Fiala, Pavel (referee) ; Bartušek, Karel (advisor)
The aim of this research is to explore the influence of magnetic field on early somatic embryos (ESEs) of spruce and pine. The magnetic field is gradual. This is important for the experiment, each cluster of ESE was exposed to magnetic field of different intensity. The resulting report of this experiment consists of the comparison between various methods of image analysis and the difference in growth of ESEs due to different exposure to magnetic field and surrounding temperature. Enclosed is a proposal of ESE size computing algorithm from a given image.
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Design of permanent magnet synchronous motor
Pavláček, Jan ; Vítek, Ondřej (referee) ; Huzlík, Rostislav (advisor)
This thesis is bent proposal synchronic motor with permanent magnets. Here are described characteristic synchronic motors, permanent magnets and possibilites construction. This thesis is sorted from common description, feature and principle function. Here are also mentioned benefits and disadvantages synchronic motors with permanent magnets. Main volume of work is proposal synchronic motor with various modifications. Proposal is realized in program Ansys Maxwell (modulus RMxpert). Engine data are entered from program Excel, where is state full calculation input and output parameters. Value is tested from [11]. Aim those work are various modification synchronic motor and his analysis.
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Public Spaces of the Historic City Center of Brno - SQUARES
Vaculíková, Petra ; Doc.Ing.arch.Irena Fialová (referee) ; Kroupa, Petr (referee) ; Rudiš, Viktor (referee) ; Pelčák, Petr (advisor)
Changes of physical, functional and social structure of the city as a result of the group of variously interrelated changes and events that are fundamentally participate in the formation of the image of the urban development. This doctoral thesis is based on research of the historical city center - squared. First part is focuses on the historical development of urban texture of the inner city of Brno and its squares. We are talking about Square of Freedom, Vegetable Market, Dominican square, Jacobs square, Capuchins square and Šilingrovo square. Based on individual characteristics, describing the emergence of morphological and functional changes in Brno square was created urban classification of basic types of square. City of Brno, as the capital city of region has a significant position in the structure of settlements. This fact has become one of the key aspects for the selection of examples of European cities and their squares. The second part of the thesis is based on comparative studies of different types of historical squares. In order to define the value of public spaces, it is necessary to look at the public places of historical perspective and deal with the causes that led to the decline of the importance and role of public spaces. Austrian capital cities of region (Graz, Linz, Klagenfurt and Salzburg) will be examined with regard to similar climatic conditions and a common cultural and historical context of the city. Based on urban patterns and graphic diagrams of each square are observed inner relationships between shapes of square, form, function and location of the position of an artwork. Research areas are also focused on comparing aspects of transport, green space, functional use, visual unit and social activities. The public space is shaped by a set of characteristics that promote diversity and interdependence of functions. For a better interpretation of the results have been established two benchmarks - symbol of identification with the place and the Magnet (function and filling space). The objective of the thesis is to define an aspects and elements of space which were involved in square use.
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Attraction
Kojetská, Monika ; Trnková, Barbora (referee) ; Kohoutková, Karolína (advisor)
In my thesis the focus is on the attraction with which I work in multiple planes. I focus on the essence of the material and its predictive value. I place emphasis on the significance of the use of specific material and use the category of its surface, superficies, fashion, luxury, kitsch, goodliness, atracction,object and desire. I work with visual, physical and sensual attraction.
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Design of magnetic drilling machine
Jun, Lukáš ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
The thesis is focused on a specific type of drilling machines, the magnetic drills press. These machines are typical for their magnetic base and are used mainly to machine magnetic materials, nonetheless, with suitable accessories, also the non-magnetic materials can be machined. The first part of the thesis begins with a description of the individual parts of the magnetic drill, their types and an overview of the accessories. The second part of the thesis contains the design of the drill itself. Cutting conditions for a 20mm twist drill and a 60mm annular cutter are defined. Based on the cutting conditions the motor is selected, then the design of a gearbox, selection of bearings and the whole assembly of the gearbox is described. Calculations of gearing, 3d model, drawing of assembly and two parts are attached with the thesis.
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Thin film systems
Rada, Vojtěch ; Sedlaříková, Marie (referee) ; Zatloukal, Miroslav (advisor)
This bachelor’s thesis is focused on the problematics of thin-film technology. In the beginning the work deals with a general theory of this problematics, discusses various methods and ways to lay a thin film, where more emphasis is placed on magnetron sputtering, which is used in the practical part of the work, and describes procedures that are performed before and after the application of the thin film. The magnetron sputtering coating machine NP-12 and its control are described in the practical part of the work. Subsequently the selection and adjustment of suitable substrates is made, the thin-film system is deposited using the magnetron sputtering method and the analysis of the properties of deposited thin-film samples is done.
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The design of DC motors for traction of a motorboat
Hudák, Ondřej ; Lapčík, Josef (referee) ; Veselka, František (advisor)
The bachelor thesis deals with the problems of design of Permanent Magnet DC Motor. The theoretical part explains the problems of sliding contact and solves the innovation in this area with specialization on the sliding contact of DC motor. The other part contains practical verification of theoretical assumptions on the selected machine of normal production.
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Single-Phase Induction Motor Calculation
Ševčík, Pavel ; Vítek, Ondřej (referee) ; Hájek, Vítězslav (advisor)
This master's thesis considers by single-phase asynchronous motor. The first part discuss about construction, principle of operation and basic parameters of this motor type. It also discussed the emergence of torque and torque characteristics of the different types of engines. The second part explains the basic ways of obtaining grip moment including outline the principles of functions particulars constructions types, which is produce in practice. In the third part is minutely analyse single-phase asynchronous motor with auxiliary phase and permanently conect capacitor, including method of assign size of a capacitor. Fourth part section provides the principles of the procedure for calculating basic parameters of the single asynchronous motor with auxiliary phase. At the last part is accomplished a calculation of single-phase asynchronous motor with permanently conect capacitor at auxiliary phase including comparation with already manufacturing motor.
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Design of magnetic drilling machine
Jun, Lukáš ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
The thesis is focused on a specific type of drilling machines, the magnetic drills press. These machines are typical for their magnetic base and are used mainly to machine magnetic materials, nonetheless, with suitable accessories, also the non-magnetic materials can be machined. The first part of the thesis begins with a description of the individual parts of the magnetic drill, their types and an overview of the accessories. The second part of the thesis contains the design of the drill itself. Cutting conditions for a 20mm twist drill and a 60mm annular cutter are defined. Based on the cutting conditions the motor is selected, then the design of a gearbox, selection of bearings and the whole assembly of the gearbox is described. Calculations of gearing, 3d model, drawing of assembly and two parts are attached with the thesis.
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