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40/5000 Fine particles produced by the stove
Škvařil, Ondřej ; Baláš, Marek (referee) ; Pospíšil, Jiří (advisor)
This master thesis deals with problematics of fine particles produced during combustion in fireplace stoves. The theoretical part is focused on the analysis of the atmosphere, health consequences, solid pollutants, the formation of particles (origin), particle separation and how they are regulated by laws. Theoretical section of the thesis addresses analysis of biomass and its combustion. In the applied section are listed given methods of the particles measuring according to regulations, common errors during measurement and methods of identification of measured fine particles. Then follow specific measurements of the formed very fine particles produced by the SMPS method. Subsequently, the results of the measurement are evaluated and summarized in the conclusion.
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Vizualization of flow of fibers from insulation mineral wool
Kedajová, Kristýna ; Elcner, Jakub (referee) ; Lízal, František (advisor)
One of the most used insulation materials of our time is mineral wool. As with formerly used asbestos, not all the health impacts of mineral wool fibers inhalation are known. The aim of this thesis is to gather findings relating to the transport of aerosols, their deposition in human airways and to obtain and statistically evaluate experimental data from the visualization of fibres in the glass tube resembling human airways. This data can improve understanding of the relation between glass fibres action and possible health hazard.
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Aerosol and microbial microclimate of clean rooms
Stojanová, Barbora ; Andrys, Petr (referee) ; Rubina, Aleš (advisor)
Master´s thesis deals with the issue of internal microclimate of clean rooms. The experimental part focuses on aerosol and microbial microclimate. Different operating and intervention rooms were measured and then evaluated whether the cleanroom would comply with the standard cleanliness class even in normal operation after previous validations. The microbial examination of different clean spaces investigated the extent to which the exact passive fall method and its evaluation were time-dependent. From the data the correct desing of the air-conditioning system and its subsequent realization and regultion were verified. The theoretical part describes requirements for clean rooms according to SÚKL-LEK 17 and ČSN EN ISO 14644-1. In addition, a detailed methodology of the procedure of air-conditioning implementation is elaborated to the final validation and testing of clean rooms.
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Phenomenological models inspired by QCD and their use in the analysis of ultra-high energy cosmic rays
Ebr, Jan ; Řídký, Jan (advisor) ; Leitner, Rupert (referee) ; Unger, Michael (referee)
Cosmic rays of energies above 1014 eV are detected mostly indirectly, by observing the extensive air showers they create in the atmosphere. Multiple experiments suggest that the current models of high-energy interactions do not describe the cosmic ray data perfectly, in particular when it comes to the prediction for the number of muons at ground. We present two models aiming to improve the description of the muon component, one based on the addition of particles with small momenta in the local center-of-mass frame of the high-energy hadronic interactions in the shower, the other on the addition of the so-called dark photons to the electromagnetic part of the shower. While we find the latter having no observable consequences, the former improves the agreement between observed and predicted amounts of muons both for the DELPHI cosmic ray data and for the measurements by the Pierre Auger Observatory. We also describe the FRAM telescope, a device used to monitor the atmosphere at the Pierre Auger Observatory, and its applications to the search for anomalous shower profiles and to the measurement of the aerosol content of the atmosphere, which is crucial for the analysis of data obtained by fluorescence detectors. 1
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Coupling atmospheric chemistry/aerosols to regional climate models
Huszár, Peter ; Halenka, Tomáš (advisor) ; Macoun, Jan (referee) ; Eben, Kryštof (referee)
Title: Coupling atmospheric chemistry/aerosols to regional climate models Author: Peter Huszár Department: Department of Meteorology and Environment Protection Supervisor: doc. RNDr. Tomáš Halenka, CSc. Supervisor's e-mail address: tomas.halenka@mff.cuni.cz Abstract: In this thesis, the connections between air quality and climate are studied. For this purpose, regional climate model RegCM3 and chemistry transport model CAMx has been coupled offline with one- and two-way interaction. Our work represents a first attempt to connect RegCM3 not only with CAMx, but with any other chemistry transport model. As a first step, an offline one way couple of RegCM3 and CAMx has been developed, meaning that the climate model drives the transport, emission, chemical transformation and deposition of species while the radiative feedbacks of gases and aerosols are not considered. A meteorological interface has been developed at our department in order to convert the meteorological data generated by RegCM3 to fields required by CAMx. For those parameters that are essential for CAMx but the regional climate model does not supply them, diagnostic methods were implemented into this interface. Further, it is used to calculate biogenic emissions. Regarding anthropogenic emissions, a simple utility has been developed to...
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