National Repository of Grey Literature 48 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Properties of metal-organic networks on modified weakly-interacting substrates
Černá, Lenka ; Švec, Martin (referee) ; Jakub, Zdeněk (advisor)
Tato práce se zaměřuje na syntézu a charakterizaci dvourozměrných (2D) metal-organických sítí na tradičních kovových substrátech i na modifikovaných slabě interagujících substrátech, konkrétně na interkalovaném grafenu. Jedinečné vlastnosti 2D materiálů, jako je mechanická pružnost, velký měrný povrch a přístupná aktivní místa, je činí atraktivními pro různé aplikace, včetně flexibilní elektroniky, katalýzy, senzorů a separace plynů. Ačkoli metal-organické sítě mají potenciální využití v různých oblastech, většina z nich jsou elektrické izolátory s nízkou pohyblivostí náboje, což omezuje jejich použití v elektronických zařízeních. První část této práce se zabývá syntézou slibného vodivého metalo-organického systému na Au(111) a systém je zkoumán pomocí nízkoteplotní skenovací tunelovací mikroskopie (STM) a skenovací tunelovací spektroskopie (STS). Druhá část práce zkoumá syntézu metal-organických sítí na modifikovaném grafenovém substrátu pomocí STM, nízkoenergiové elektronové mikroskopie (LEEM), rentgenové fotoelektronové spektroskopie (XPS) a úhlově rozlišené fotoemisní spektroskopie (ARPES). Výsledky naznačují, že modifikace substrátu metal-organické sítě interkalací může umožnit vyladění přenosu náboje mezi metal-organickou sítí a substrátem a zároveň zachování strukturní integrity rozhraní. Celkově tato práce přispívá k pochopení syntézy a charakterizace 2D metal-organických sítí jak na tradičních kovových substrátech, tak na modifikovaných grafenových substrátech.
Spectroscopy of single molecules in STM nanocavity
Doležal, Jiří ; Švec, Martin (advisor) ; Frank, Otakar (referee) ; Roslawska, Anna (referee)
Scanning tunneling microscopy-induced luminescence (STML) combined with high- resolution atomic force microscopy (AFM) is a powerful tool for studying the photophysics of individual molecular emitters on surfaces. However, the mechanism of energy conver- sion between tunneling electrons and photons in decoupled systems placed in a nanocavity of STM is not fully understood as it depends on many variables. This thesis presents a range of proof-of-concept experimental approaches. The vi- ability of CO-terminated tips for STML is demonstrated by performing subnanometer- resolved spectroscopy and mapping of photon intensity acquired over zinc phthalocyanine on NaCl/metal substrate. For the same molecule, time-resolved phase fluorometry is de- vised and is used to reveal the exciton and charge dynamics as a function of the applied bias voltage. Of more fundamental character, the role of the chromophore environment on its exciton emission and binding energy is studied. For the first time, we observed and explained the presence of molecular librations in molecules on the surface from a comb-like emission line resulting from the exciton-libron coupling and the chiral adsorp- tion geometry. Finally, exciton delocalization in molecular aggregates is mapped using the tip nanocavity capable of detecting the dark states,...
Possibilities of pulmonary rehabilitation for oncological patients after lung resections
ŠVEC, Martin
The lung carcinom is one of the most common types of cancer in male population of the Czech Republic. The usual signs are chest pain, stuffiness, hoarseness and coughing. Lobectomy is usually done to the patients with smaller tumors. It is important to ensure the right preoperative education of the excercises. The priority after the operation is pain therapy, removal of the increased amount of phlegm, support of expectoration, improvement of the ventilation parameters and prevention of post-operative complications. The selected objective of this thesis was to map the problematics of pulmonary rehabilitation of oncological patients after lung resections and also to suggest an approach to the pulmonary rehabilitation of oncological patients after lung resections. The theoretical part describes the anatomy of primary and auxiliary respiratory muscles, the characteristics of the lung carcinoma and its chirurgical therapy and the techniques of pulmonary rehabilitations including different physiotherapeutic concepts like soft and mobilization techniques, the Brügger concept, proprioceptive neuromuscular facilitation and kinesiotaping. The practical part is consisted of qualiative research in which three oncological patients after the lung resetions participated. The research includes trigonometric and anthropometric examinations, muscle test, measurement of maximal exhaling and maximal inhaling pressure, the Borg's scale of percieved exertion and saturation of hemoglobin from oxygen. The therapy began the day before operation and ended before discharge on the seventh to eighth day. The results went back to previous values before the operation in some of the parameters and there were no negative effects of the therapy. It is safe to say that the therapy had a positive effect on the patients without any complications.
Studium interakce adsorbátu s pasivovanými povrchy Si pomocí STM
Matvija, Peter ; Kocán, Pavel (advisor) ; Švec, Martin (referee)
The scanning tunneling microscopy is used to study the morphology of Tl adlayer in various stages of Tl desorption from the Si(111) surface and to study behaviour of various adsorbates on the Si(111)/Tl-(1 × 1). The utilization of thallium layer for passivation of the Si(111) was examined closely for various adsorbates. Manganese, aluminium, indium and tin layers which were directly deposited onto the Si(111)-(7 × 7) were compared with the layers prepared by deposition of adsorbate onto the passivating layer after the subsequent thermal desorption of Tl (after annealing at ≈ 400◦ C). Examined adsorbates exhibited signs of extremely high diffusivity and weak bond with the surface Si(111)/Tl- (1 × 1). The passivating layer was stable against the adsorbates.The application of thallium in the role of surfactant caused lowering of temperature and coverage needed for the preparation of reconstructions which were observed on the surfaces prepared by the direct deposition of adsorbate. 1
Role of surface defects in ceria-based catalysis
Tovt, Andrii ; Mysliveček, Josef (advisor) ; Čechal, Jan (referee) ; Švec, Martin (referee)
Title: Role of surface defects in ceria-based catalysis Author: Andrii Tovt Department: Department of Surface and Plasma Science Supervisor of the doctoral thesis: doc. Mgr. Josef Mysliveček Ph.D., Department of Surface and Plasma Science Abstract: This work concentrates on the analysis of fundamental physicochemical properties of Pt-CeOx, single-atom Pt1 /CeOx, and inverse CeOx/Cu(111) catalysts. Preparation method for stabilized atomically-dispersed Pt2+ ions on ceria was developed and adsorption sites for Pt ions were thoroughly studied using advanced surface science techniques supported by theoretical methods. The mechanism of Pt2+ stabilization on ceria steps was revealed and the step capacity towards Pt2+ ions was estimated. Also, the preparation method for well-ordered cerium oxide ultrathin films with different stoichiometry and ordering of surface oxygen vacancies was developed, and the Ceria/Cu(111) interaction was investigated. Key words: heterogeneous catalysis, model systems, single-atom catalysis, platinum ions, cerium oxide.
Model catalysts based on cerium oxide
Aulická, Marie ; Veltruská, Kateřina (advisor) ; Nemšák, Slavomír (referee) ; Švec, Martin (referee)
This work deals with the preparation of thin cerium oxide films on the Cu(110) single crystal. Physico-chemical properties of this system were studied by surface science techniques (XPS, UPS, ARUPS, LEED, LEEM and STM). The first part of the work concerns interaction of Cu(110) single crystal with oxygen. Condi- tions for formation of O(2x1) and Oc(6x2) oxygen reconstructions were found. Various methods of preparation of CeOx films were discussed. A novel method for continuous control of ceria stoichiometry from CeO2 to Ce2O3 through variation of oxygen vacancy concentration has been developed. Ceria facilitated oxygen spill-over was observed on copper substrate. It was found that a restructuring of copper substrate occurs at the copper-ceria interface with subsequent formation of Cu(13 13 1) facets, which support a Carpet-like ceria overlayer. Interaction of this system with platinum was studied. Finally, high temperature growth of CeOx films was studied and creation of ceria islands exposing the (110) plane was observed. 1
Premiums in life insurance
Švec, Martin ; Zamazal, David (advisor) ; Branda, Martin (referee)
In the present thesis we study with-profit policy in life insurance. First we intro- duce general information about profit sharing and basic terms. We shortly look at the life insurance legislation. In the main part of thesis we look at three me- thods of calculation profit sharing and thereafter own method will be suggested. In second part of thesis we describe cash-flow model of life insurance implemented in iWorks Prophet Software. All methods with various economic scenarios and with various parameters settings will be tested in this model. Finally we analyse results of projections, we compare cash-flow for important variables a we describe advantages and disadvantages for every method.

National Repository of Grey Literature : 48 records found   1 - 10nextend  jump to record:
See also: similar author names
5 ŠVEC, Miroslav
6 Švec, Marek
29 Švec, Martin
5 Švec, Matěj
4 Švec, Michael
19 Švec, Michal
2 Švec, Milan
5 Švec, Miroslav
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