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Surface Modification of Zinc Alloys
Kinc, Marek ; Foral, Karel (referee) ; Molliková, Eva (advisor)
The object of this bachelor’s thesis is to create a research in field of zinc alloys. In the first part, there are outlined production of pure zinc with a different methods and briefly described the treatment of waste. The next are described the zinc alloys and their properties and outline the ways of die casting. The end of this thesis is focused on methods of finishing the surfaces.
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Aircraft air-conditioning systems
Lednický, Ondřej ; Horák, Marek (referee) ; Třetina, Karel (advisor)
The bachelor thesis is focused on the aircraft air-conditioning systems, their functions and basic tasks needed for a safe and comfortable flight. The thesis is divided into several chapters: the first one deals with the most important factors influencing human health. Next chapter is focused on a description of the assurance of main components which are composing the aircraft air-conditioning system. Final chapter of the thesis deals with oxygen systems, which are essential for the survivor of the passengers in the case of an accident.
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COMPARISON OF MARKET PRICES OF FLATS WITH PRICES SET BY COMPARISON METHOD ACCORDING TO VALUATION REGULATIONS WITH FOCUS ON REVIEW OF PARTICULAR QUALITATIVE PARAMETERS
Pertl, Marek ; Abraham, Karel (referee) ; Puchýř, Bohumil (referee) ; Weigel, Lubomír (advisor)
PhD thesis solves problems of mutual comparison of real estate market prices with prices found out in a comparison way according to price regulations. The thesis is focused on real estates of type housing units, flats which are found within the area of former district city Havlíčkův Brod. From time point of view, years 2009 - 2014 were solved. Within this period, first of all data collection was under way followed by grouping information on separate trading in housing units, flats. Obtained market prices were consequently confronted with prices found out in a comparison way according to relevant price regulations. Obtained results were analyzed, this analysis was focused on chosen marks and their qualitative zones at separate indexes. Upon achieved results and newly gained knowledge, partial modifications or corrections in price regulations are proposed. Another output of this thesis is a proposal for introducing new coeficients. These make provision for difference of market and found out prices of housing units, flats in area of former district city Havlíčkův Brod in years 2009, 2010, 2011, 2012, 2013 and 2014. Thanks to this, common price is possible to estimate retrospectively with the help of price regulations. At the very conclusion of the thesis, these coeficients were applied in different former district city in Vysočina Region, in concrete terms in Žďár nad Sázavou. In this way, possible use of these newly proposed coeficients was introduced in other former district cities as well which is, nevertheless, necessary to be verified in practice or subject to other research.
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Hot Water Grate Boiler
Svoboda, Marek ; Šilhavý, Karel (referee) ; Lisý, Martin (advisor)
This thesis deals with design of hot water grate boiler, where the output is water with parameters 130 °C and pressure 16 bar. In the content of the whole thesis is gradually introduced a stoichiometric calculations, which is based on the specified fuel – wood chips. This is followed by the design of the individual heating surfaces according to the thermal calculations given in the thesis. Finally, the calculation is extended by hydraulic and aerodynamic losses. Dimensional design, as a basic scheme, is shown at thesis. More detailed drawing documentation is attached to this thesis.
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Drop forging of hub
Vostřel, Jan ; Novotný, Karel (referee) ; Štroner, Marek (advisor)
The project elaborated in a frame of Bachelor’s studies branch B 2307 presents a technology design of a forged piece – hub – a part of a gear box made by drop forging from 14 231.0 material. Drop forging in three operations was suggested on the basis of specialized studies on the subject of drop forging and calculations. Assumed series of 40 000 pieces a year, preciseness and automatization of production of the part, will be produced on the crank drawing inclinable press LMZ 2500 (producer Šmeral Brno, a.s.) with nominal tensile force 25 MN. Swages are made of alloyed instrumental steel 19 552.8, heat-worked according to drawing documentation. At the end of the project technical economic evaluation of the technology design is implemented.
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Apartment building
Marek, Václav ; Jelínek, Petr (referee) ; Struhala, Karel (advisor)
The subject of this bachelor thesis is a new building of an apartment house in Chotěboř. The apartment building is designed from the four-storey part and from the five-storey part, the floors are finished with a residential attic. The apartment building is connected to the existing housing development, installed in a slightly sloping terrain. The apartment building contains seventeen housing units, the apartments are designed for housing four-member families, while apartments of the studio type are designed for two persons. The first floor is designed for the technical facilities of the building, there is also a commercial area that is considered for the operation of a hairdresser. Other above-ground floors consist of housing units. The apartment house is covered with a saddle seddle roof, in the part of the fifth floor there is also an outdoor terrace with a flat roof. The vertical load-bearing and non-load-bearing structures are formed by the Porotherm brick system. Horizontal ceiling structures are designed as a monolithic reinforced concrete slab. The foundation structures are made of monolithic concrete and monolithic prefa. The parking space is designed outside the building, with parking for the disabled. The project was developed in the ArchiCad graphics program. All constructions comply with valid standards and regulations.
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Software support of teaching of cryptography protocols
Marek, Tomáš ; Lambertová, Petra (referee) ; Burda, Karel (advisor)
Document contains informations about authentication, encryption, data integrity and data authenticity. Next part includes description of well know cryptography protocols, their functions and also their weaknesses. All of these acquired informations were used in concept and final software support for teaching of cryptography protocols, which is able to run on clasic web-browser. Thats why the application was designed as web PHP pages using JavaScript and AJAX, which ensures plaform and OS architecture independency. Besides the descripted and ilustrated part of application there are also interactive parts and animations. The last period contains description of education software and its functions. Source code can be found on the appended CD.
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New Possibilities to Reduce Raw Material Costs in the Cordierite Production
Sopko, Marek ; Lang, Karel (referee) ; Nevřivová, Lenka (advisor)
The diploma thesis focuses on new possibilities to reduce raw materials costs in production of heat-resistant cordierite ceramics. Cordierite is very often used as furnace wagon lining and for production of blazing utilities for its high resistance against temperature changes. The thesis gives complete overview of cordierite material. It includes description of different production technologies for form-pieces preparation, raw materials for their production and their applications. The goal of performed laboratory measuring in an experimental part was to verify and prove a possibility of reducing raw-material costs in production of cordierite ceramics by using cheaper preferably secondary raw materials.
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Technological and economical aspects aplication CNC machining centers
Martiňák, Marek ; Osička, Karel (referee) ; Prokop, Jaroslav (advisor)
The Aim of this diploma thesis has been to analyse the application of the CNC machining centers for the production especially with concentration on accuracy and economical aspect of the machining process. After the study of the literature and making familiar with the production on the CNC machine tool of the type Deco Sigma 20 ( manufacturer, the firm Tornos ) it has been evaluated the technology of the design of the chosen part, its machining accuracy and found out the economical parameters of this machinery for this chosen part as a necessary supposition for securing the correct production in accordance with the requirements of the client. The described process of the technological and economical preparation for the production as well as its checking can be used in future for the proposals of the further similar parts.
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