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The study of photodynamic phenomenon on melanom cell lines
KOLÁČKOVÁ, Zdeňka
Photodynamic therapy (PDT) is a medical method combining the use of photodynamic active substance and light in presence of oxygen. It extends the treatment possibilities of tumor and non-tumor disorders. It complements surgical treatment, radiotherapy, chemotherapy and immunotherapy. An increased accumulation of photosensitive substance in pathological focus is the base of PDT. Subsequent irradiation by light of suitable wavelenght evokes photodynamic reactions leading to formation of reactive oxygen species and to biological answer leading to tumor cells damage. The final effect depends on sensitizer type, its concentration in target tissue and on used source of radiation. Aim of the thesis is to prove photodynamic properties of newly developed photodynamic active substance phtalocyanin CIAIPcS2 and possibilities of its usage to induce photodynamic phenomenon in melanom cells. Owing to absorption of light in sensitizer the formation of excited states happens, and then the excited form of sensitizer reacts directly with substrate. During this reaction free radicals of substrate form or transfer of energy from sentitizer to oxygen and formation of highly reactive singlet oxygen happen. Free radicals, especially radicals of lipid components of cell membranes, are the major cause of tumor destruction. Fruitfulness of PDT depends not only on type of sensitizer and level of oxygen in tumor cell but also on used light source. Luminiscence diodes (LEDs) were used as the source of light. Formation of ROS after PDT was detected with the help of fluorescent molecular probe CM-H2DCFDA on spectrofluorimeter Synergy HT and on fluorescent microscope Olympus IX 81 with image analysis. According to our results the production of ROS depends on concentration of sensitizer CIAIPcS2 and the radiation dose. We proved that the sensitizer CIAIPcS2 is suitable photodynamic active substance and evokes photodynamic phenomenon in tumor cells.
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Treatment of flue gas polluted by NOx
Hanák, Libor ; Jecha, David (referee) ; Dvořák, Radek (advisor)
There is an overview of secondary methods for NOX removal from stationary sources in the first part of master’s thesis. There are well known methods as SCR o SNCR, but also new and experimental ones. An accent is putting on catalytic filtration, especially on cloth filter, which will be used for experiments. An important part of master’s thesis is a project of new experimental unit for experiments with cloth and ceramic catalytic filters as well as with a bit of cloth filtration material. Unit has compact proportions, high-class measurement and control and wide application spectra. Other advantages of this equipment are fast and easy cleaning and installation. This unit, called INTEQ II, can be used in plants or in laboratories. There is prediction model created together with new technology. It enables calculation of efficiency at catalytic filters with variable conditions without many experiments. This model is elaborate and will be finished with dates from measuring. There in only summary of planned experiments in this thesis, because measurements at new unit have not done yet. Experiences with operations at unit INTEQ I were used for proposal of new equipment and for experiments planning.
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The Old Czech "Jetřich Berúnský" and the Middle High German "Laurin"
Hon, Jan ; Jiroušková, Lenka (advisor) ; Bok, Václav (referee)
This thesis paper analyzes the old Czech epic poem 'Jetřich Berúnský', with special regards to its Middle High German model 'Laurin'. It summarizes the context of the origin of the German poem and the cultural and historical conditions for its interpretation, and explores the question of how these aspects were recontextualized in the new cultural and language environment. Thus, its main topic is the heroic and courtly epic tradition on the one hand, and the means of fulfilling the expectational horizon of the Czech audience in the 14th century on the other. The latter of these two aspects is, moreover, related to the issue of the Czech poem's estimated time of origin -the paper presents new evidence supporting the theory that the epics might have been originally written at the beginning of the 14th century, i.e. not in its second half as it is so far generally accepted. This evidence is partly based on additions to its older linguistic analysis, partly on a textological analysis comparing the only known version of the Czech text with the complicated genesis of the German epics; and, above all, on a motivical and narrative comparison with 'Dalimil's Chronicle'. At the end the paper concludes issues for the further research of the 14th century Bohemian literature.
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Nové nukleosidfosfonové kyseliny jako inhibitory thymidinfosforylázy
Kočalka, Petr ; Rinnová, Markéta ; Vaněk, Václav ; Rejman, Dominik ; Votruba, Ivan ; Tomečková, Ivana ; Králíková, Šárka ; Petrová, Magdalena ; Páv, Ondřej ; Pohl, Radek ; Buděšínský, Miloš ; Liboska, Radek ; Točík, Zdeněk ; Rosenberg, Ivan
Several sugar-modified thymine-containing nucleoside phosphonic acids were found as a strong inhibitors of thymidine phosphorylase purified from spontaneous T-cell lymphomas of an inbred Sprague-Dawley rat strain.
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Testing of bioeffectors on phosphorus mobility in soils
Holečková, Zlata ; Balík, Jiří (advisor)
Crave for increase in agricultural production over the past sixty years reflects in widespread use of mineral fertilizers. Due to the growth of the world population an increase of overall demand for feed and food is expected. Limited availability of cultivatable soil and increasing dependance on mineral fertilizers can be also anticipated. It is therefore important to find alternative strategies for plant nutrition. In 2012, the project of cooperation between several universities in Europe was revealed. This project examines the use of bioeffectors in crop production. Use of these substances should help to reduce the input of mineral fertilizers used in agriculture and improve land usage. Thesis will perform testing in real conditions of different geographic locations. The main objective is to develop new approaches to the use of so-called bioeffectors based on the mechanism of action of living microorganisms and active natural substances. Bioeffectors may be, depending on soil and climatic conditions, a key factor for overcoming limitations in the availability of nutrients. They can contain microorganisms (bacteria, fungi) and active natural compounds (digest from soil or compost, microbial residues, plant extracts, metabolites from biological processes, dried herb material or seaweed). These substances are developed for a wide variety of crops (e.g. corn, wheat and tomatoes). Their effectiveness consists in nutrients mobilization from less accessible forms in the soil. The thesis is mainly focused on the impact of bioeffectors on various forms of phosphorus in the soil. Phosphorus in the soil belongs to essential elements necessary for the growth and development of plants. Despite its necessity in plant metabolism is its content in the soil relatively low. A higher phosphorus content is in most samples of soil mainly in the surface area because an increased biological activity occurs there causing the accumulation of organic material. Some influence can be also observed in connection with application of organic and mineral fertilizers. Amount of phosphorus in soil may vary depending on parental rock type, texture and land management (the ratio of P supplied and type and method of land cultivation). Above mentioned influences even have an effect on relative amount of organic and inorganic forms of phosphorus. Three basic groups of phosphorus contained in the soil can be described: inorganic phosphorus compounds, organically bound phosphorus and exchangeable absorbed phosphorus. The amount of phosphorus bound in the fractions depends mainly on the time of fertilizer application, including the impact of earlier interventions. For these reasons, it is necessary to execute detailed analysis of the various forms of phosphorus in the soil after application of mineral fertilizers together with bioeffectors. In this dissertation variety of pot and field experiments will be set up, where samples from each variation of soil and plant will be separated and researched. Samples will be analyzed and amounts of phosphorus will be measured.
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Management of Talent Development
Jindřich, Tomáš ; Němec, Otakar (advisor) ; Dědina, Jiří (referee) ; Černoch, Felix (referee)
The subject of this text is the management of talent development. The aim of a dissertation was to identify what skills abilities are supposed from Talents in organizations what is suitable to develop in trainings by talents what method of development is most effective for talents and what we should consider hen we set up talent management in organization. The history of talent management manners and current interpretation of keywords are analysed in theoretical part. The hypotheses were set up to current problems and were verified by standard manners in organizations and at the university. The hypotheses have passed successful only for typical circumstances where the talents usually are. The most important knowledge are two new trends in talent management. The first is business coaching like combined method of development for talents is most effective manner of talent development. The second knowledge says that talent management set up of talent management depends on level of systematic work in organization.
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Analysis and Testing of Concurrent Programs
Letko, Zdeněk ; Lourenco, Joao (referee) ; Sekanina, Lukáš (referee) ; Vojnar, Tomáš (advisor)
V disertační práci je nejprve uvedena taxonomie chyb v souběžném zpracování dat a přehled technik pro jejich dynamickou detekci. Následně jsou navrženy nové metriky pro měření synchronizace a souběžného chování programů společně s metodologií jejich odvozování. Tyto techniky se zejména uplatní v testování využívajícím techniky prohledávání prostoru a v saturačním testování. Práce dále představuje novou heuristiku vkládání šumu, jejímž cílem je maximalizace proložení instrukcí pozorovaných během testování. Tato heuristika je porovnána s již existujícími heuristikami na několika testech. Výsledky ukazují, že nová heuristika překonává ty existující v určitých případech. Nakonec práce představuje inovativní aplikaci stochastických optimalizačních algoritmů v procesu testování vícevláknových aplikací. Principem metody je hledání vhodných kombinací parametrů testů a metod vkládání šumu. Tato metoda byla prototypově implementována a otestována na množině testovacích příkladů. Výsledky ukazují, že metoda má potenciál vyznamně vylepšit testování vícevláknových programů.
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