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Chemical mistakes in the light of reality - identification and explanation
Fatka, David ; Šmejkal, Petr (advisor) ; Míka, Luděk (referee)
This thesis deals with widespread, chemically-themed misinformation. The the- oretical part describes psychological effects leading to myth spreading. It also descri- bes the debunking possibilities of such myths and the didactic reasons for misinformation- based work on the high school level. General practical part uses methods of content analysis upon random sample of School educational programmes to prove the usability of misinformation-based work in education. It also summarizes the organisations and resources useful for myth debunking. Specific practical part deals with analysis of chosen suspicious information, their credibility and the possibilities of educational work based on them. The chosen in- formation was the "medicinal" usage of chlorine dioxide solution. Rumors of alkaline diet and alleged harmfulness of aspartame, an artificial sweetener, were also chosen. The way they tend to be presented, none of these claims are backed. In all these cases, multiple unsubstantiated claims were found among proponents of these ideas.
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Cross-bridged cyclams as manganese(II) chelators
Míka, Luděk ; Kotek, Jan (advisor) ; Vojtíšek, Pavel (referee)
Title: Cross-bridged cyclams as manganese(II) chelators Autor: Bc. Luděk Míka Department: Department of Inorganic Chemistry, Faculty of Science Supervisor: doc. RNDr. Jan Kotek, Ph.D. Supervisor's e-mail address: modrej@natur.cuni.cz Abstract: The aim of this project was to synthesize a new kind of Mn(II) complexes with ligands derived from cross-bridged cyclam. These complexes may be potentially used as contrast agents in magnetic resonance imaging. Six macrobicyclic ligands with various pendant arm were synthesized, three complexes were sucesfully prepared. Electrochemical properties of prepared manganese(II) complexes with synthesized ligands were studied using cyclic voltammetry. Relaxivity of prepared complexes was determined by 1 H NMR spectroscopy. Keywords: cross-bridged cyclam, phosphonate, phosphinate, pendant arms, manganese
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Design and synthesis of selective manganese(II) chelators
Míka, Luděk ; Kotek, Jan (advisor) ; Tauchman, Jiří (referee)
Title: Design and synthesis of selective manganese(II) chelators Autor: Luděk Míka Department: Department of Inorganic Chemistry, Faculty of Science Supervisor: doc. RNDr. Jan Kotek, Ph.D. Supervisor's e-mail address: modrej@natur.cuni.cz Abstract:Abstract:Abstract:Abstract: The aim of this project is to synthetize new kind of macrobicyclic ligands derived from cross-bridged cyclam for complexation of Mn2+ ions. These complexes may be potentially used as contrast agents in magnetic resonance imaging. Three macrobicyclic ligand with various pendant arms were synthesized. The ability to complex manganese(II) ions were studied by Mass Spectroscopy. Electrochemical properties of manganese(II) complexes with general chelating agents and one synthesized ligand were studied using cyclic voltammetry. Keywords:Keywords:Keywords:Keywords: cross-bridged cyclam, phosphonate, phosphinate, pendant arms, manganese
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