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Trace elements in carbonates of the Czech Creataceous Basin
Štěpánková, Anna ; Procházka, Václav (advisor) ; Štaffen, Zdeněk (referee)
The presented work is focused on research of distribution of trace elements in carbonate sediments and fossils in the Bohemian Cretaceous Basin. To obtain maximum information about the composition of the primary carbonate and its crystallization environment, the trace elements were analyzed mainly in fractions soluble in diluted acid. Another objective is the comparison of trace-element abundance in the soluble fraction and in the residue (or in the total mass of the samples). The results show that there are no systematic differences in the chemical composition of the original carbonate between various regions and stratigraphic positions (Cenomanian - upper Turonian). Elements like Sr, Mg and Mn in carbonate were affected by diagenesis, but contents and mutual ratios of the rare earth elements in all carbonates are similar and are characterized by negative cerium anomaly. The Ce-anomaly could be attenuated by elevated content of clastic matter, and in the soluble portions ocassionally via contamination by secondary phosphate. On the other hand, soluble fractions of limonite-rich and calcite-poor sandstones have positive cerium anomaly, which is the effect of Ce-sorbtion on limonite.
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Geochemical model of arsenic at the Mokrsko gold deposit
Drahota, Petr ; Pertold, Zdeněk (advisor) ; Száková, Jiřina (referee) ; Zeman, Josef (referee)
Geochemical model of arsenic at the Mokrsko gold deposit Dissertation of Petr Drahota 1 Abstract The dissertation contributes to the As mobility at the naturally contaminated site of Mokrsko gold deposit in Central Czech Republic. The primary goal of the dissertation is to fill some gaps in previous research carried out at the study site in order to contribute to the quantitative biogeochemical model of As in the bedrock-groundwater-soil-surface water system. In the first part, the previous research related to As environmental issues at the study site has been reviewed, discussed and evaluated. These include detail information on (i) the extent of natural As contamination in bedrock and soil, (ii) the extent of As contamination in groundwater, (iii) the primary and secondary As mineralogy in bedrock and soil, (iv) the chemical speciation of As in soil and (v) the leaching experiments of the gold ore. In the second part, the mineralogical and chemical speciation of As in soil, in stream and fishpond sediments and dissolved As concentrations in waters have been studied to determine the processes that lead to release of As into solution and control its concentration under different redox conditions at the Mokrsko gold deposit. The highest dissolved As was found in groundwater (more than 1000 g L-1 ), which...
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Possibilities of Using Some Elements of Project-based Learning in German Lessons in Secondary Schools in the Czech Republic
Zapletalová, Pavla ; Kouřimská, Milada (advisor) ; Spáčilová, Libuše (referee) ; Janíková, Věra (referee)
The project method is not an unknown method. Since the time of Jan Amos Komenský, in whose work some of its universal principles also appeared, it has occupied its rightful place among other methods. From the latest scientific points of view it ranks among activity-based methods and approaches. They particularly emphasize the importance of emotionally charged activities, the multi-sensory approach to the subject matter, and the close connection to the real world and real-life situations. A model formulated by the German pedagogue Herbert Gudjons, which significance lies primarily in the complexity of its conception, seems to be one of the most appropriate models of the project nowadays. The project method itself has its positive aspects but also certain difficulties and risks which we have to take into consideration when deciding what teaching method to use Moreover, as far as the foreign language teaching is concerned, some features of the general model of the project method are not applied in foreign language teaching at all or just partially. Powered by TCPDF (www.tcpdf.org)
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In vitro-cultures of medicinal plants-III.
Danielová, Barbora ; Tůmová, Lenka (advisor) ; Dušková, Jiřina (referee)
- 4 - ABSTRAKT Barbora Danielová In vitro-cultures of medicinal plants-III. Elicitation is one of the methods that can be used for increasing secondary metabolites production in in vitro cultures. The present study investigates the effect of methylviologen as the abiotic elicitor on the flavonoids production in the callus and suspension cultures of Ononis arvensis L. after 6, 12, 24, 48, 72 and 168-hours methylviologen administration. The cultures were cultivated on Murashige-Skoog medium with addition of 10 mg/l α-naphtylacetic acid (α-NAA). The flavonoids content was determined using spectrophotometry methods. The maximal content of flavonoids was detected in callus culture after 168-hours methylviologen elicitation in concentration c1 (2,1929 . 10-3 mol/l), the production was increased about 444%. The maximal increase of flavonoids production in suspension culture was after 12-hours methylviologen elicitation in concentration c3 (2,1929 . 10-5 mol/l), the production was increased about 42%. In the opposite, the decreased flavonoids production was detected in callus culture after methylviologem treatment in the concentration c1 (2,1929 . 10-3 mol/l) after 6 and 12 hours about 100% and in suspension culture in the concentration c2 (2,1929 . 10-4 mol/l) after 12 hours about 88%.
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The sewerage water in biology education at secondary school
Čábelová, Zuzana ; Skýbová, Jana (referee) ; Pavlasová, Lenka (advisor)
The contents of this diploma work compose of cleaning sewerage water and adding an excursion in education according to The General education Programs for Grammar School (RVP-G). Two working hypothesis where tested: 1) The students, which pass an excursion in sewage plant and work job sheets up, keep in mind the information about cleaning sewerage water better. 2) The students, which can view only a PowerPoint presentation without any other active working on presented information, keep in mind this information worth. First, the list of sewage plants within borders of the Capital city Prague was created. These plants can be visited by students of second schools. The next step was the creation of education materials (a PowerPoint presentation, the First information for students before an excursion started, the Job sheets). Information about the PowerPoint presentation was added for lectors need. There where 134 students of second level of grammar school in Prague in the investigation. Given hypotheses where tested via control test for students. This test shows which the students, which view the PowerPoint presentation and can fill the job sheets in classes, keep in mind the piece of knowledge about the sewage plants questions in better way. The students, which can only follow up the explanation, keep in mind...
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The study of azaphthalocyanines interactions with unilamellar liposomes I.
Kučerová, Helena ; Zimčík, Petr (advisor) ; Miletín, Miroslav (referee)
Three types of different octasubstituted zinc azaphthalocyanines (ZIP-44Zn, ZIP-21Zn and ZIP-65Zn) were incorporated into liposomes made from dioleoylphosphatidylcholine (DOPC). These dyes were incorporated into LUVETs (large unilamellar vesicles made by extrusion technique) which were obtained from suspension of multilamellar vesicles. Fluorescence spectra of the dyes in LUVETs were measured. The binding constants of azaphthalocyanines with LUVETs were calculated. Absorption spectra of the dyes in LUVETs were also measured and extinction coefficients were calculated. We found out that ZIP-44Zn (n-octylsulphanyl substituents) was present in DOPC liposomes only in very small amount while the other two dyes were incorporated in high concentration into LUVETs. This fact was connected with the level of aggregation of water insoluble AzaPc. ZIP-44Zn contains long alkyl chains as substituents on periphery. These substituents do not inhibit sufficiently the aggregation in water medium or in lipid bilayer. On the other hand, ZIP-21Zn and ZIP-65Zn contain bulky substituents on periphery and they were incorporated in large amount in phospholipid bilayer of liposomes.
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Memory of the place "I will return there"
Jušková, Kamila ; Cikánová, Karla (advisor) ; Synecký, Jakub (referee)
The thesis "Memory of the place" is focused on seeking for the points of thematic support - the attributes of the landscape, that would characterize selected places within the region of Czech Switzerland, Elbe Sandstones and Luzic Mountains and help to the visualization of the landscape by means of photography and also to the subsequent creative paraphrase. In the thesis the selected place is characterized by the double type of the geological structure - on the one hand those are the sediments of sandstone and on the other hand eruptive rocks of the crystalic basalt. These two types of structures then subsequently serve to the creative shifts in the practical and pedagogical part of the thesis. The sandstone varied in shape and colour (the principle of destruction, expression) and on the contrary the monochrome firmly construed basalt (the principle of construction) are shown in the different relations with the other attributes of this landscape, e. g. with water, vegetation and influence of the man. At the same time the elements of time, light and motion are projected into their metamorphoses.
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Hydrokinesiotherapy
Lukešová, Eva ; Vacek, Jan (advisor)
In this work I tried to summarize all the possible ways how we could take advantage of hydrokineziotherapy and implement it into different levels of prophylactic procedures in health care. It is based upon the knowledge of locomotion itself and its control mechanisms on one hand and the physical characteristics of water on the other. Very interesting is the comparison of movement on shore with the movement in water in relation to control mechanisms of movement. To help to compare those two adequately there is also an explanation of how the body and mind gets used to being in water enviroment. This is connected to the movement automatisms that the brain has got and uses in everyday life. These automatisms in order to master the movement in water precisely have to be rearranged and adjusted. In the chapter that deals with the different types of exercise I concentrated on the most common types of gymnastic hydrokinesiotherapeutic exercises with the slight accent on swimming and pasive relaxation which creates bases for the next chapter. This chapter which is also the last explains how different methodics and programs can bu put into practice. Final part brings forvard some examples of health problems where those exercises can become a part of primary, secondary or tertiary prophylactic procedures. It also...
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Actual options in prevention of premature labour
Michalcová, Jana ; Straňák, Zbyněk (advisor)
Premature labour is the main cause of neonatal morbidity and mortality in developed countries and represents a major perinatology and socio-economic problem. Currently we speak about preterm parturition syndrome, that can be induced by various factors, from which inflammation is considered as the most important, mainly of infectious etiology. Combination of anamnesis, ultrasound cervicometry and cervicovaginal fetal fibronectin test is presently considered as the most reliable in diagnostics of premature labour. These examinations have a high negative predictive value. The primary objective of tocolysis is to delay delivery in order to save time for induction of lung maturity and transfer in utero to specialized centres. Oxytocin antagonists are currently considered as ideal tocolytics. Administration of antibiotics at spontaneous premature labour with intact membranes and without any signs of infection is not recommended. In case of premature rupture of membranes, infection may represent its cause or possible secondary complication as well. That is why antibiotics should always be administered in this case, ideally erythromycin. Further management depends paricularly on gestational age of the fetus. Efficacious primary prevention of premature labour is not possible so far. The means of secondary prevention...
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