National Repository of Grey Literature 5 records found  Search took 0.01 seconds. 
Load carrying capacity enhancement of thrust bearing
Tomek, Ondřej ; Šindelář, Martin (referee) ; Křupka, Ivan (advisor)
The Master Thesis describes knowlege in thrust bearings with solid segments. Contains analysis of thrust bearing used in NR/20SJ turbochargers. Further designs new thrust bearing with enhancement of load carrying capacity. The new thrust bearing and the old one are tested and compared.
Synthesis of alkylaminoderivatives of phthalocyanines
Tomek, Ondřej ; Kopecký, Kamil (advisor) ; Opletalová, Veronika (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Drug Analysis Student: Ondřej Tomek Supervisor: PharmDr. Kamil Kopecký, Ph.D. Title of diploma thesis: Synthesis of alkylaminoderivates of phthalocyanines The aim of my diploma thesis was the synthesis and the characterization of phthalocyanine alkylaminoderivates and the comparison of their photophysical and photochemical properties with similarly substituted azaphthalocyanines. I start with the synthesis of dialkylaminodichlorophthalonitrile by the substitution of tetrachlorophthalonitrile. Then I use these derivates of tetrachlorophthalonitrile for cyclotetramerization reaction. As a result of my work, I received only diethylaminosubstituted phthalocyanines with undesirable butoxy-substituents. I was not successful in the preparation of phthalocyanines substituted with cyclic amines by the used methods. The prepared compounds were characterized by using the standard spectral methods (UV-VIS, IR, 1 H NMR, 13 C NMR, mass spectra).
Synthesis of alkylaminoderivatives of phthalocyanines
Tomek, Ondřej ; Kopecký, Kamil (advisor) ; Opletalová, Veronika (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmaceutical Chemistry and Drug Analysis Student: Ondřej Tomek Supervisor: PharmDr. Kamil Kopecký, Ph.D. Title of diploma thesis: Synthesis of alkylaminoderivates of phthalocyanines The aim of my diploma thesis was the synthesis and the characterization of phthalocyanine alkylaminoderivates and the comparison of their photophysical and photochemical properties with similarly substituted azaphthalocyanines. I start with the synthesis of dialkylaminodichlorophthalonitrile by the substitution of tetrachlorophthalonitrile. Then I use these derivates of tetrachlorophthalonitrile for cyclotetramerization reaction. As a result of my work, I received only diethylaminosubstituted phthalocyanines with undesirable butoxy-substituents. I was not successful in the preparation of phthalocyanines substituted with cyclic amines by the used methods. The prepared compounds were characterized by using the standard spectral methods (UV-VIS, IR, 1 H NMR, 13 C NMR, mass spectra).
Load carrying capacity enhancement of thrust bearing
Tomek, Ondřej ; Šindelář, Martin (referee) ; Křupka, Ivan (advisor)
The Master Thesis describes knowlege in thrust bearings with solid segments. Contains analysis of thrust bearing used in NR/20SJ turbochargers. Further designs new thrust bearing with enhancement of load carrying capacity. The new thrust bearing and the old one are tested and compared.

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