|
|
Magnetic field effect on the flow character close to the surface
Buday, Jakub ; Šedivý, Dominik (referee) ; Fialová, Simona (advisor)
The aim of this bachelor´s thesis is to discribe basic properties of flow and magnetic field. Further characterize different applications of magnetic fluids. Also discribes the influence of magnetic field on some properties and behaviours of water. This thesis is comparing several conlusions of scientific articles, that are examining this subject. In the experiment the changes of three fluids were observed by the help of high speed camera. The contact angle of fluids before and after exposing to magnetic field is compared. In the second part of the experiment behavior of flowing drop through magnetic field is observed.
|
|
|
Collection system design for multichannel spectrometer
Sovadina, Petr ; Buday, Jakub (referee) ; Novotný, Jan (advisor)
In laser-induced breakdown spectroscopy, the intensity of radiation that enters the spectrometer is crucial. Ideally, the collection of radiation is from a single point of plasma. The greater the intensity of radiation is, the more perspicuous the graph of wavelengths is. Therefore, it is necessary to have the best optimized optical collection system. The existing collection system was not designed for connection to a multichannel spectrometer. The use of the optical multifibre resulted in a collection of radiation from different spots in plasma. Therefore, there was a request for a new optical system designed to collect radiation from a single point of plasma and would be suited for the best collection of radiation. The designed and manufactured collection system was tested. During the test was discovered that the collection system can be calibrated well and allows collection from one point of plasma. The test is considered successful.
|
|
|
Design of an optomechanical module for laser-induced plasma imaging
Buday, Jakub ; Hrdlička, Aleš (referee) ; Pořízka, Pavel (advisor)
Laser-Induced Breakdown Spectroscopy (LIBS) is a method of analytical chemistry that provides a qualitative and quantitative analysis of a sample. The ablation process of a sample is fast and dynamic and the change of plasma in time and space is a question of a few microseconds. An examination that provides a good time and space resolution is necessary to understand better the physical processes. For this reason, the goal of this thesis is to design a basic optomechanic construction for this type of experiment. Furthermore, it is important to check the functionality of this design and to use it for a basic comparison between the spectroscopic and imaging data. Also, the time development of plasma will be observed under different experimental conditions. The goal of this thesis, in general, is to prove that the morphology of plasma is as it is described in available related literature.
|
|
|
Mapping of non-homogeneous samples in combination of LIBS and complementary methods
Zimmermannová, Valérie ; Konečná, Anna (referee) ; Buday, Jakub (advisor)
This thesis focuses on mapping of mostly heterogennous samples using a Laser Induced Breakdown Spectroscopy (LIBS) and other complementary methods. The aim is to examine the relations between the obtained data and their common potential aplication. The samples used were homogeneous aluminum, a concrete sample and a mouse bone. All samples were mapped using the LIBS method and laser-induced plasma imaging. For the homogeneous sample, complementary data were employed to improve the relative deviation of spectral data. In case of the heterogeneous samples, relationships between the obtained data were investigated.
|
|
|
Project Management
Buday, Jakub ; Mrázek, Lukáš (referee) ; Juřica, Pavel (advisor)
The bachelor's thesis deals with project management in a construction company using the best practices of project management. In the theoretical part, the most important concepts from the field of project management are defined. The analytical part deals with the introduction of the company and the evaluation of the current state of project management in the company. Finally, suggestions are made to improve project management.
|
|
|
Collection system design for multichannel spectrometer
Sovadina, Petr ; Buday, Jakub (referee) ; Novotný, Jan (advisor)
In laser-induced breakdown spectroscopy, the intensity of radiation that enters the spectrometer is crucial. Ideally, the collection of radiation is from a single point of plasma. The greater the intensity of radiation is, the more perspicuous the graph of wavelengths is. Therefore, it is necessary to have the best optimized optical collection system. The existing collection system was not designed for connection to a multichannel spectrometer. The use of the optical multifibre resulted in a collection of radiation from different spots in plasma. Therefore, there was a request for a new optical system designed to collect radiation from a single point of plasma and would be suited for the best collection of radiation. The designed and manufactured collection system was tested. During the test was discovered that the collection system can be calibrated well and allows collection from one point of plasma. The test is considered successful.
|
|
|
Design of an optomechanical module for laser-induced plasma imaging
Buday, Jakub ; Hrdlička, Aleš (referee) ; Pořízka, Pavel (advisor)
Laser-Induced Breakdown Spectroscopy (LIBS) is a method of analytical chemistry that provides a qualitative and quantitative analysis of a sample. The ablation process of a sample is fast and dynamic and the change of plasma in time and space is a question of a few microseconds. An examination that provides a good time and space resolution is necessary to understand better the physical processes. For this reason, the goal of this thesis is to design a basic optomechanic construction for this type of experiment. Furthermore, it is important to check the functionality of this design and to use it for a basic comparison between the spectroscopic and imaging data. Also, the time development of plasma will be observed under different experimental conditions. The goal of this thesis, in general, is to prove that the morphology of plasma is as it is described in available related literature.
|
|
|
Magnetic field effect on the flow character close to the surface
Buday, Jakub ; Šedivý, Dominik (referee) ; Fialová, Simona (advisor)
The aim of this bachelor´s thesis is to discribe basic properties of flow and magnetic field. Further characterize different applications of magnetic fluids. Also discribes the influence of magnetic field on some properties and behaviours of water. This thesis is comparing several conlusions of scientific articles, that are examining this subject. In the experiment the changes of three fluids were observed by the help of high speed camera. The contact angle of fluids before and after exposing to magnetic field is compared. In the second part of the experiment behavior of flowing drop through magnetic field is observed.
|
guest ::
RSS feed.