<p><strong>Apstrakt je obrađen tehnologijama za optičko prepoznavanje teksta (OCR).</strong></p><p>Istraživanja u ovom radu imala su za cilj da daju doprinos razja&scaron;njenju fluidodinamike sistema gas-čvrsto-punjenje i definisanju osnovnih karakteristika ovog sistema: pada pritiska i dinamičkog i statičkog sadržaja čvrste faze. Eksperimentalna merenja osnovnih fluidodinamičkih karakteristika sistema ostvarena su u zavisnosti od: uticaja brzina pokretnih faza (gasne i čvrste faze), tipa punjenja, veličine čestica čvrste faze i visine sloja punjenja. Ispitivanja su ostvarena na najče&scaron;će kori&scaron;ćenim komercijalnim punjenjima: Raschigovim prstenovima, Pall prstenovima, Intaloks sedlima i cilindričnim mrežicama, kao i do sada ne kori&scaron;ćenim punjenjima (keramičke kuglice i lomljeni kamen). Na osnovu eksperimentalnih podataka izvedene su korelacione jednačine za predviđanje pada pritiska i dinamičkog i statičkog sadržaja čvrste faze i granice između režima pre nakupljanja i nakupljanja u zavisnosti od osnovnih parametara kontaktora: brzina gasne i čvrste faze, veličina čestica čvrste faze i karakteristika punjenja. Kori&scaron;ćenjem dosada&scaron;njih literaturnih saznanja o uticaju operativnih parametara i osobina punjenja, gasa i čvrste faze na fluidodinamiku kontaktora gas-čvrsto-punjenje i sospstvenih eksperimentalnih rezultata proverena je validnost predloženih korelacija. Dobijeni zadovoljavajući rezultati predloženih korelacija pružaju mogućnost za predviđanje režima rada i fluidodinamičkih karakteristika ovog tipa kontaktora koji ima &scaron;iroku mogućnost primene u procesima toplotne razmene, adsorpcije, preči&scaron;ćavanja otpadnih gasova i hemijskim reakcijama.</p>

The diploma thesis is devoted to the separation of a pollutant (NH3) from a water solution using an experimental technology device - membrane contactor. The theoretical part is mostly focused on the recent progress in the field of membrane contactors. The theoretical part also contains theory of absorption, chemisorption and microreactions, which is needed to understand the subject properly. The experimental part focuses on the construction of the experimental device and what does experimental device consist of. The efficiency of the device in transfer of ammonia to an nitrate salt of nitric acid solution was tested. At the end, experimental data are further discussed.

The diploma thesis is devoted to the separation of a gasseous pollutant (CO2) from a gas mixture using an experimental technology device - membrane contactor. The theoretical part is mostly focused on the recent progress in the field of membrane contactors. The theoretical part also contains theory of absorption, which is needed to understand the subject properly. The experimental part focuses on the construction of the experimental device. The efficiency of the device in absorption of carbon dioxide to an aqua solution of sodium hydroxide was tested. At the end, experimental data are discussed.

This is a master thesis project carried out during a 20-week period in the spring of 2020 and that corresponds to 30 credits. The project covered concept development of a contactor (switch for controlling high current). The client ABB Control Products in Västerås, Sweden, have noticed an emerging need within the megatrend electrification in line with a growing energy demand. This comprises a new 1-pole DC-contactor (direct current contactor) within the application of EV-charging (electric vehicle charging). The problem, that this project has been based on, was to create a theoretically functioning concept for a 1-pole DC-contactor based on the client's existing 2-pole DC-contactor. In addition, some other requirements for the concept (formulated as project objectives) have also composed the problem. The research question below has been formulated as a support for carrying out the project. “How can a 2-pole DC-contactor be redesigned into a 1-pole DC-contactor, applicable in EV-charging?” By answering the research question, the project sought to contribute with a value that describes the general benefit of the project by what the concept brings in relation to the growing energy demand. The project has been carried out by using several product development methods that have led to a result which is a theoretically functioning concept. The concept has been presented as a CAD-model, it consists of three main sections: the bottom, the middle and the top. The sections consist of different components that together constitutes the concept. The concept has been able to mimic existing product to such an extent that it can be perceived to fit into the same product family. The core of the concept is that it is estimated to be capable of conducting current at 3000 A and breaking it at 1500 V. By taking advantage of the concept, which in consultation with the client has been considered to consist of a good overall solution, the further development of the new contactor can proceed towards industrialization. This, in despite to the fact that not all project objectives have been fulfilled. In future work it is recommended to develop certain areas of the design in order to later proceed to, among other things, testing the strength and conductivity of a future prototype. The project has resulted in an economic value and a scientific value due to a pending patent of a solution which has helped to make the concept work. In addition, the developed concept has created an opportunity to be able to charge heavy vehicles and charge more vehicles with higher power and higher speed. Thus, the concept has contributed to the megatrend electrification. Finally, the value generated by the entirety of the project can be summarized to that the concept can contribute to a more sustainable future in line with a growing energy demand, where more people choose renewable sources using electric vehicles for transportation.

Deionised-ozonated water, so-called DIO3 appears to be an ideal alternative for usage in semiconductor industry. The utilisation of DIO3 for removal of photoresist from silicon wafers is faster, cheaper, and more environmental-friendly compared to classical technology based on mixture of sulphuric acid with hydrogen peroxide, so-called SPM. The diploma thesis deals firstly with research into ozone and ozonated water and their possible applications. Next sections describe two prototypes of generators for DIO3, that were assembled in CSVG a.s. Testing of parameters for generators on dissolved-ozone concentration is also a part of this thesis. Moreover, thesis involves tests, that were carrier out in ON Semiconductor in Rožnov pod Radhoštěm. These tests compare efficiency of cleaning by classical technology based on SPM and DIO3 approach.