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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Proti požární povrchová úprava

Ženatý, Petr January 2018 (has links)
The goal of the thesis is to try and test the functionality of fire protection coatings, which are intended to protect against the direct effects of fire. This is the protection of furniture materials that are used predominantly in areas where fire can occur (restaurants, bars, public interiors), but also in the home near heat-generating devices. The purpose of surface protection is to prevent the spread of fire, to protect the flammable underlying material and to reduce the amount of smoke generated. The tests will be carried out according to ČSN EN 13501-1. The subject of the thesis is also to compare the mutual interaction of the substrate material and the paint composition with respect to the overall fire resistance and subsequently to evaluate the lowest weight loss during the flame action. The rest of the tests will deal with the determination of paints parameters such as adhesion to the surface, resistance to temperature changes, etc.
2

Příprava dětí mladšího školního věku v hasičském sportu / Preparation of early school age children in fire sport

Jermanová, Zuzana January 2011 (has links)
My thesis paper is focused on preparation of early school age children in fire sport. This sport is known as adult sport and only marginally. In theoretical part I want to bring near ideas of this sport. I deal with history of fire departments and children in these departments, next I am focused on fire game "Plamen"(Flame) and also trainer personality. Research is focused on searching and evaluation of informations about preparation early school age children in fire sport in Benešov district.
3

Porovnání technologií kyslíkového a plazmového řezání / Comparison of oxy and plasma cutting

Solař, Luboš January 2009 (has links)
This diploma thesis is focused on comparison of plasma and oxygen - acetylene cutting. A literature review of this issue is included in the work. For technological - economic evaluation, there were proposed a sample part to assess how optimal the cutting process is. Observed resulst and there comparison are stated in conclusion.
4

Výpočtové modelování laboratorního hořáku programem FLUENT / Computational modelling of a laboratory burner using FLUENT code

Broukal, Jakub January 2009 (has links)
Tato diplomová práce je zaměřena na porovnání různých turbulentních a chemických modelů na příkladu volné metanové trysky ústící do vzduchu. Nejprve je uveden teoretický úvod k modelům, následován CFD (Ansys Fluent) simulacemi plamene pomocí vybraných modelů. Jako součást práce je provedeno a vyhodnoceno experimentální měření. V závěru jsou experimentální výsledky porovnány s nasimulovanými daty.
5

Studium chování izolačních materiálů na bázi organických vláken po zabudování do konstrukce / Possibilities of improvement of fire properties of insulation materials based on organic fibers

Urbánek, Tomáš January 2019 (has links)
This work is focuses on the modification of organic fiber insulating materials in terms of their reaction to fire after installation into the construction. The target is to find a way to improve the reaction to fire and to at least reach the reaction to fire D.
6

Generování hydridu bismutu pro atomovou absorpční a fluorescenční spektrometrii. / Hydride generation of bismuth for atomic absorption and fluorescence spectrometry.

Kolrosová, Marta January 2019 (has links)
This master's thesis deals with the optimization of conditions of chemical hydride generation (HG) of bismuth, its atomization and detection by atomic absorption spectrometry (AAS) and atomic fluorescence spectrometry (AFS). Two types of atomizers were used for atomization of volatile species, a miniature diffusion flame for AAS as well as for AFS and a flame-in-gas-shield atomizer for AFS. At first, the parameters of HG in a flow injection mode were optimized - the concentration of hydrochloric acid, the concentration of sodium borohydride and the volume of the reaction coil. Subsequently, the atomization conditions were optimized using both atomizers. The parameters optimized were hydrogen fraction, total gas flow rate and observation height. Due to the more complicated construction of the FIGS atomizer, more parameters were studied, such as the oxygen flow rate through the capillary and the flow rate of shielding argon required for shielding the free atoms. A special part of the thesis dealt with the optimization of the optical path of the atomic fluorescence spectrometer, the selection of an interference filter and the optimization of a power supply of an electrodeless discharge lamp. It was found that under optimum conditions of generation, atomization and detection excellent detection limits...

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