National Repository of Grey Literature 29 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Use of third-generation biofuels for energy purposes
Janská, Barbora ; Köbölová, Klaudia (referee) ; Zlevorová, Tereza (advisor)
Algae-based biofuel is currently a very attractive source for future use. This bachelor's thesis covers the whole process of fuel production, from cultivation to the product itself. The first chapter covers the classification of biofuels and attitudes towards algae processing in the Czech Republic and abroad. Next, there are methods of cultivation. The third chapter describes ways of harvest, separation and individual processes of third-generation biofuel production. This work, among other things, includes a comparison of the yield of biofuels from commonly used energetic feedstock with algae.
Systems reducing the energy dependency of buildings
Mařák, David ; Köbölová, Klaudia (referee) ; Kudela, Libor (advisor)
This thesis focuses on systems that reduce the energy dependence of buildings, such as heat pumps, photovoltaics, heat recovery, and the utilization of geothermal energy. The main objective of this work is to analyze individual methods and technologies aimed at optimizing energy efficiency. The thesis explores the impact of these systems on the sustainability and ecological footprint of buildings, combining a theoretical overview with practical cases to provide a comprehensive perspective on the subject.
The future of waste management in the Czech Republic
Vlašic, Jakub ; Köbölová, Klaudia (referee) ; Sitek, Tomáš (advisor)
The presented work deals with changes in waste management in the Czech Republic. This area is an important part of the economy of every country and, especially in today's times, it requires great attention. The work summarizes the current situation of waste management in the Czech Republic and suggests some possible changes in this field. One of these changes is the construction of new facilities for energy recovery from waste. Other changes will likely affect the composition of the waste, which could impact these facilities. The impact is expressed in the work using the waste produced by a family of four over one month, with its quantity and composition determined. This composition was subjected to analysis, which determined its properties important for combustion and energy use. The results of the analysis were applied to the forecasted changes, and the impact on the facilities for energy recovery from waste was assessed. Finally, these forecasts were evaluated based on their overall benefit.
Environmental monitoring for production quality assurance
Minářová, Klára ; Köbölová, Klaudia (referee) ; Řezáčová, Veronika (advisor)
This bachelor's thesis deals with the topic of environmental monitoring to ensure production quality. Specifically, the attention was paid to the monitoring of the presence and development of the number of microorganisms in the air and on work surfaces in specific production areas at regular intervals. The number of microorganisms in the air was determined by the method for determining the microbiological burden of the air, and the concentration of microorganisms on the surface was determined by the method of imprinting the tested area on an agar plate with subsequent cultivation and counting the bacterial colonies according to the internal regulations. Monitoring is carried out by the control microbiological laboratory, which falls under the quality department of the given manufacturing company. The basis for the preparation of this bachelor's thesis was obtained during my intership in the control microbiology laboratory.
Nuclear power plants and their safety
Novotný, Petr ; Köbölová, Klaudia (referee) ; Milčák, Pavel (advisor)
The bachelor thesis deals with the current state of nuclear energetics. It describes the development of nuclear power plants to date and specifically describes the most commonly used types of nuclear reactors. Most of the reactors currently in operation are second generation reactors. However, a number of third-generation reactors with improved technological and safety parameters are already under construction. Improved safety lies in the improvement of active safety systems, but also in the increased use of passive safety systems. The paper concludes with a comparison of specific solutions from the most important nuclear reactor manufacturers in the world.
Methods of energy treatment of municipal waste
Štork, Martin ; Köbölová, Klaudia (referee) ; Linda, Jakub (advisor)
The bachelor's thesis deals with the topic of how to deal with waste in order to obtain as much energy as possible from it. That's why we are dealing with restrictions on landfilling. In the theoretical part of the thesis, we will find the types of waste and their characteristics, as well as the ways in which waste can be worked. In the practical part of the thesis, I try to show how waste could be worked in the future, ideally for a large yield of energy and with minimal air pollution during waste processing. This results in a complete restriction of landfilling.
Determination of chlorine in fuels
Saitl, Pavel ; Köbölová, Klaudia (referee) ; Lisá, Hana (advisor)
This work presents and theoretically processes several standard methods for determining the chlorine content in biofuels. The advantages and disadvantages of each method are discussed, along with their comparison to one another. Additionally, the behaviour of chlorine during the combustion process, the impacts of gaseous chlorine on combustion devices, and possible mitigation strategies are described. Within the framework of describing the behaviour of chlorine during the combustion process, both high-temperature and low-temperature chlorine corrosion, which are most pronounced in boilers burning biomass-derived fuels and solid alternative fuels, are explained. The work also includes the natural cycle of chlorine, illustrating the negative impact that escaping gases from boilers burning biomass and solid alternative fuels have.
Exposure to Nanoparticles in Work Environment
Köbölová, Klaudia ; Mikuška, Pavel (referee) ; Adamec, Vladimír (advisor)
Outside to the wide range of potential benefits, the use of nanomaterials can endanger human health and the environment. This diploma thesis presents the results of pilot measurements, where the exposure of nanoparticles was monitored. Based on a literature research a suitable method for measurement was the three-stage OECD model. Based on this model, measurements were performed in three welding workplaces, where nanoparticles are produced incidentally. The measurement consisted of collecting information and measuring the concentration of nanoparticles in the workplace, where data collection was focused only on inhalation exposure. During welding, 0.3 m size particles are produced and their concentration is strongly influenced by the welding material, type of welding and suction. The particles are amorphous in terms of morphology and contain manganese, iron and silicon, which can cause neurodegenerative diseases. Furthermore, the results indicate the importance of monitoring oral exposure.
Utilization of light scattering techniques in study on protein denaturation
Köbölová, Klaudia ; Kalina, Michal (referee) ; Sedláček, Petr (advisor)
This bachelor thesis is focused on verifying the use of light scattering techniques in the study of protein denaturation. The theoretical part of the thesis describes proteins, their general properties, the process of denaturation and it provides an insight into light scattering. In the experimental part of the study I investigated the denaturation effects of four selected potential denaturing agents – urea, guanidine hydrochloride, sodium dodecyl sulfate, copper (II) sulfate – on two model enzymes: lipase and lysosyme. The denaturation effects of these denaturants were studied with the help of the dynamic light scattering method (DLS). In order to describe the change in particle size during denaturation, I used Z-Average, Volume mean and intensity distribution which were determined by this method.
Ultrafine particles filtration efficiency of commonly available materials
Kudláčová, Martina ; Köbölová, Klaudia (referee) ; Sitek, Tomáš (advisor)
In connection with the outbreak of the COVID19 pandemic, there has been a global shortage of personal respiratory protective equipment against ultrafine particles. The citizens were forced to reach for the alternatives and use homemade cloth masks for personal protection. The efficiency of the protection provided by a cloth mask is related to the selection of a suitable material for its production. This thesis contains basic knowledge in the field of aerosol theory, transmission of the SARS-CoV-2 virus, which causes the COVID19 disease and filtration of aerosol particles containing the virus. Based on the theoretical knowledge from the first part, an experimental measurement is performer determining the efficiency of filtration and pressure loss of selected commonly available materials. Based on the results comparison, the most suitable materials for the homemade masks production are selected.

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