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61	Separace aerosolových částic na polymerních membránách / Separation of aerosol particles using polymeric membranes Morcinek, Tomáš January 2021 (has links) This diploma thesis deals with the separation of aerosol particles on membranes from polypropylene hollow fibers. As a source of particles, a desktop 3D printer using polymer filaments was used. Filtration efficiency and a pressure drop on a hollow polypropylene fiber membrane and a high efficiency particulate filter (HEPA filter) were monitored during filtration of particles from 3D print using filaments of acrylonitrile butadiene styrene, acrylonitrile styrene acrylate, polylactic acid and polyethylene terephthalate glycol at nearly the same air flow. The results achieved by both filer media are then compared and discussed. The results show that the hollow fiber membrane achieves better filtration efficiency at higher particle concentrations, while using the less emitting materials, the efficiency of the HEPA filter was higher or the same. The total filtration efficiency calculated from all experiments with all filaments was higher for the hollow fiber membrane with higher pressure drop at the same time.
62	Využití 3D tisku v TZB / Using 3D printing in HVAC Malovaný, Ondřej January 2019 (has links) In the experimental part of this thesis there is an assessment of pressure bearing capacity of cylindrical nozzles printed using a 3D printer. In the theoretical part of this diploma thesis there are outlined the types of additive technologies focusing on the development of FDM printers, open designs and RepRap project. Descripti-on of the production process of 3D printing and application of additive technolo-gies in the field of HVAC. In the project part, the design of the forced ventilation of the Sports Hall is solved. The object is assessed in terms of heat losses and profits for priority rooms of functional units. Heat load coverage is carried out by air-conditioning equipment. In addition, a project is drawn up which contains all the text and drawings, including technical specifications and regulatory schemes.
63	3D tištěná směrová anténa / 3D printed directional antenna Dvořák, Václav January 2019 (has links) This master thesis deals with a study of directional antennas, followed by their design and optimalization of horn antenna based on SIW for Ka band (26,5- 40 GHz). The first part of the thesis contains the theoretical analysis of the different types of directional antennas, also the SIW technology is described here. It also describes the 3D printing technology by means of which the final antenna should be made. The next part of this work is about design of horn antenna based on SIW. Simulation and optimization of the antenna will be done using the CST Microwave Studio. The final part of the thesis deals with evaluation of achieved results.
64	Návrh a realizace zařízení pro zjednodušení a urychlení testování systému AWS/TPWS / Design and development of AWS/TPWS system testing device Majchrák, František January 2019 (has links) The aim of the work was design and realization of device to simplify and speed up the testing of AWS / TPWS train protection system. The first chapter is addressed to description and division of train protection systems. The next chapter describes the process of commissioning the AWS / TPWS system and possible applycation of the device to this process. The final chapters deal with design, specification of components, realization of device and verification of its functionality.
65	Zkoušky vybraných vlastností materiálů pro 3D tisk / Testing of selected material properties for 3D printing Čáslavský, František January 2019 (has links) This thesis deals with 3D printing, materials used for 3D printing, testing of the materials and learning their real parameters. Goal of the thesis is comparing selected materials, executing series of mechanical test and selecting suitable material for printing high-quality plastic parts for use in automobiles, especially for reproduction of parts that are no longer made for oldtimers and for use in motorsport.
66	3D tiskárna typu Delta / Delta type of 3D printer Němec, Radek January 2019 (has links) This master thesis is about design and construction of FDM delta 3D printer which consists of 32-bit electronics, magnetics printer head and other necessary peripheries. Opening chapters of this thesis are about theory of 3D printing and its methods with description of FDM 3D printers and summarization of FDM plastic materials used for 3D printing. The next part is about used electronics and problematic of heat transfer. The main part of this thesis describes design and construction of 3D printer and its necessary peripheries, which includes creation of its 3D model and application for 32bit controller. 3D model of delta 3D printer and its heating components was created in CAD software SolidWorks. The last part includes description of commissioning and calibration of delta 3D printer with summarization of economic aspects of its creation.
67	3D tištěná směrová anténa / 3D printed directional antenna Dvořák, Václav January 2019 (has links) This master thesis deals with a study of directional antennas, followed by their design and optimization of horn antenna based on SIW for Ka band (26,5- 40 GHz). The first part of the thesis contains the theoretical analysis of the different types of directional antennas, also the SIW technology is described here. It also describes the 3D printing technology by means of which the final antenna should be made. The next part of this work is about design of horn antenna based on SIW. Simulation and optimization of the antenna will be done using the CST Microwave Studio. The horn antenna was modeled with three different dielectric loads. The horn antenna with an experimental triangular dielectric load was chosen for fabrication. The fabricated antenna has reached almost the whole bandwidth to cover Ka. The antenna gain was 9,38 dBi for 33 GHz frequency.
68	Návrh 3D tiskárny typu delta pi s temperovanou podložkou s využitím systémů CAE / Design of delta pi 3D printer with tempered bed using CAE systems Koudela, Ondřej January 2015 (has links) This master's thesis deals with 3D printing using non-commercial 3D RepRap type printers. This work briefly describes development trends of non-commercial RepRap printers, theory of FDM print with analysis and comparison of materials, which are used in printing and the issue of the finite volume method and theory of heat diffusion. The practical part based on simulations from SolidWorks Flow Simulation discussed two basic methods of heating hot bed, then the temperature profile of hot end and the heat flow in full assembly of the printer. Outcome of this work is design an optimized model and the physical assembly of 3D printer delta pi type.
69	Nové materiály pro podporu výuky biochemie na SŠ / New educational materials for education in biochemistry at secondary schools Stránský, Jaroslav January 2021 (has links) Biochemistry is usually the last taught discipline of chemistry. In the Czech Republic, grammar school students study biochemistry during the third or fourth grade. This can sometimes cause problems because there is often little time left for biochemistry when compared to other chemical disciplines. The content of the biochemical curriculum is often limited only to memorization of the most important facts and there is no time enough to point out the important relationships of biochemistry to everyday life. In the last year of study, many students have already decided whether or not to study chemistry in the future and it is then difficult to find some topics that would attract the attention of those who do not want to continue studying chemistry. This thesis is focused on the solving this situation. The first part gives an overview on the theoretical background, which forms the framework for the following parts - Analysis of selected textbooks, which was done to map the current state of teaching biochemistry in Czech schools, and Creation of new didactic materials that can complement current textbooks and help teachers explain the basics of biochemistry more clearly and in the context of contemporary everyday life. The last part of this diploma thesis summarizes the experiences with use of the...
70	Materializing. / Matrialisering. Persson, Matilda January 2018 (has links) This project is about how we can create architecture that hold the same atmospheric qualities as a tale. By using different media like film, dioramas and technology the tales have been analysed for qualities that have been carried through into architecture. The blend of the real and the unreal is central to any tale and so also to my project; this mixed expression is carried through into the resulting structure. The final product becomes a bath house full of expression, impressions and varying realities. Tales stories John Bauer bland tomatr och troll material 3d-print architecture art narrative sequence perforation moss bark sky atmosphere feel Architecture Arkitektur

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