Now showing items 21-40 of 116068

    • Zonoidy měr a jejich aplikace 

      Hendrych, František (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      In the present thesis we are concerned with special convex sets called zonoids. Zonoids are sets that are possible to be expressed as a limit case of a finite sum of line segments. They have found applications in geometry ...
    • Štúdium vývoja dislokačnej štruktúry v pokročilých horčíkových zliatinách 

      Šimko, Pavol (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      : This thesis deals with evolution of dislocation structures in mag- nesium alloys containing long-period stacking ordered phase (LPSO). Before de- formation the samples were studied by optical light microscopy, in the ...
    • Deriváty cyklamu s koordinujícími bifunkčními skupinami v pozicích 1,8 pro selektivní komplexaci mědi 

      Hörnerová, Alžběta (Univerzita Karlova, Přírodovědecká fakulta, 2020)
      Date of defense: 14. 7. 2020
      Copper radionuclides are the object of increasing interest due to their advantageous properties for use in tumor diagnostics (PET, SPECT) and radiotherapy. In order to accomplish the best biodistribution the metal ion needs ...
    • Mobility of individuals and populations in the prehistoric period. Confrontation of archaeological, ethnological and natural scientific methods. 

      Hrnčíř, Václav (Univerzita Karlova, Filozofická fakulta, 2020)
      Date of defense: 14. 7. 2020
      Mgr. Václav Hrnčíř Mobility of individuals and populations in the prehistoric period. Confrontation of archaeological, ethnological and natural scientific methods. Abstract of dissertation thesis This thesis focuses on the ...
    • Ověření Analyticko-ruminační hypotézy: deprese jako funkční adaptace. 

      Ševčíková, Marcela (Univerzita Karlova, 1. lékařská fakulta, 2020)
      Date of defense: 14. 7. 2020
      Next to the traditional medical concept of depression, there is an expert opinion suggesting that depression is a functional adaptation to adversity. In the theoretical part of the thesis, we present the adaptive hypothesis ...
    • Dlouhodobý osud pacientů po akutním infarktu myokardu s implantovaným vstřebatelným stentem 

      Kozel, Martin (Univerzita Karlova, 3. lékařská fakulta, 2020)
      Date of defense: 14. 7. 2020
      Background: A higher rate of bioresorbable vascular scaffold (BVS) thrombosis has been observed after device implantation compared to implantation of permanent metallic stents in recently published studies. The mechanism ...
    • Vliv hydrofobicity povrchu a náboje molekuly pro Ramanovu spektroskopii kapkově nanášených povlaků 

      Bura, Radek (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      Raman spectroscopy is an optical vibrational spectroscopic technique suited for a study of biomolecules and their interactions. In contrast to classical Raman spectroscopy, Drop-Coating Deposition Raman spectroscopy (DCDR) ...
    • Vliv pnutí na magnetooptické vlasnosti La2/3Sr1/3MnO3 

      Maleček, Tomáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      The influence of epitaxial strain on La2/3Sr1/3MnO3 (LSMO) thin films has been studied by magneto-optical spectroscopy. The investigated samples have been grown by pulsed laser deposition on four different substrates with ...
    • Model study of biomolecules bonding to cerium oxide nanoparticles 

      Pittnerová, Daniela (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      In the last few years cerium oxide due to its convenient properties for biomedical applications has been studied as a promising material for fabrication of third-generation of mediator-less enzymatic biosensors. The bonding ...
    • Thermo-transport effects in antiferromagnets 

      Baďura, Antonín (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      This thesis investigates magnetic properties of an antiferromagnet Mn5Si3 in both collinear and noncollinear antiferromagnetic phases, which this compound evinces. The work is based on three distinct experimental approaches: ...
    • Studium elektronových přeskoků v systému heterocyklických molekul metodami kvantové mechaniky. Simulace absorpčních a emisních spekter. 

      Tichý, Ondřej (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      This thesis is about computing lifetimes of excited states of molecules by using semiempirical methods in simulations of molecular dynamics. Pyrimidine nucleobases and three aza- derivatives were chosen as reference ...
    • Teoretické zkoumání interakce vody se zeolity za vysokých teplot 

      Benešová, Tereza (Univerzita Karlova, Přírodovědecká fakulta, 2020)
      Date of defense: 14. 7. 2020
      The thesis is focused on theoretical study of hydrolysis and isotopic oxygen exchange in zeolite chabazite under steaming conditions. The theoretical study was performed by the methods of computational chemistry, namely ...
    • Značení komplexů hliníku a gallia radioizotopem 18F 

      Kuncová, Lucie (Univerzita Karlova, Přírodovědecká fakulta, 2020)
      Date of defense: 14. 7. 2020
      The most widely used emitter in positron emission tomography is the fluorine isotope 18 F, which can bind to a number of atoms, and thus allows the formation of imaging agents for positron emission tomography. This work ...
    • Měření elektrického pole v polovodičovém detektoru s netriviální geometrií kontaktů 

      Fridrišek, Tomáš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      The main aim of this bachelor thesis was to investigate whether it is possible to use a new method based on the electro-optical Pockels effect, to study the internal electric field in the coplanar grid detector. The Pocklels ...
    • Optimalizační metody prvního řádu v úlohách strojového učení 

      Janáček, Patrik (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      The goal of the thesis is to introduce the stochastic gradient method for optimizing differentiable objective function and discuss its convergence. First, supervised learning and empirical risk minimization (ERM) are ...
    • Ramanova spektroskopie kapkově nanášených povlaků vybraných kontaminantů 

      Přikryl, Mikuláš (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      in english: Drop coating deposition Raman spectroscopy is a special method of Raman spectroscopy based on a deposition of a small volume of solution or suspension on a special substrate with hydrophobic properties. The ...
    • Studium magnetických struktur pomocí Kerrovy mikroskopie v různých konfiguracích 

      Papáčková, Anežka Terezie (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      The magneto-optical Kerr effect (MOKE) is an optical non-destructive and non- invasive method used to investigate the physical properties of magnetic materials that can be further used in magneto-optical technologies. This ...
    • Fosforové deriváty 1,4,7-triazacyklonananu pro nukleární medicínu 

      Lebruška, Viktor (Univerzita Karlova, Přírodovědecká fakulta, 2020)
      Date of defense: 14. 7. 2020
      The use of metal isotopes for the study of tissues in the field of nuclear medicine is currently being developed. Metal isotopes are accumulated non-specifically in the body. Therefore, it is necessary for diagnosis and ...
    • Magnetic shape memory alloys: Effects of doping with Cu and Fe 

      Kancko, Andrej (Univerzita Karlova, Matematicko-fyzikální fakulta, 2020)
      Date of defense: 14. 7. 2020
      In this thesis, the focus is set on studying the properties of Ni-Mn-Ga magnetic shape memory (MSM) alloys, ferromagnetic Heusler compounds, codoped with Fe and Cu. Codoping Ni-Mn-Ga MSM alloys with Fe and Cu had previously ...
    • Deriváty triazacyklononanu s thiazolovou postranní skupinou pro ukotvení do polymerních nosičů 

      Willimetz, Robert (Univerzita Karlova, Přírodovědecká fakulta, 2020)
      Date of defense: 14. 7. 2020
      With the growing resistance of bacteria to antibiotics, it is crucial to search for other ways to treat and prevent bacterial infections. Bacteria attached to the surface of medical implants can form a so-called biofilm, ...

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