National Repository of Grey Literature 5 records found  Search took 0.01 seconds. 
Metane hydrate extraction
Hanzlík, Martin ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
Thesis describes the chemical and physical properties of methane hydrate, the presence and location of sites in various types of sediment. Goal of this work is to evaluate the proposed production methods of methane hydrate from the technological, logistical and economic aspects. With the technologies currently available, the best production method is depressurization. There is a high probability that in the next decade it will be used for the production of natural gas from methane hydrate. The conclusion is evaluating areas with high potential for industrial production.
Aberační změny u fluvizemí vlivem intenzivního způsobu hospodaření
Fleková, Šárka
Diploma thesis „Aberration of fluvisol as affected by intensive agriculture management“ aims at the determination of selected soil properties, which can help us to assess the aberration changes. These can be positive or negative depending on agro-technical measures. Gleyic Fluvisol Clayic is under long-term monoculture of spring barely and under Norfolk crops rotation system. We followed soil reaction, buffering capacity, available nutrients content, and soil organic matter content and quality. Data set was evaluated by one-way ANOVA analysis and t-test (P=0,05). Negative aberration was confirmed in exchangeable soil reaction and soil organic carbon content. Positive aberration was found out in total nitrogen content, C/N ratio, and available nutrients. Effect of soil tillage and crops residues managements was not statistically significant.
Metane hydrate extraction
Hanzlík, Martin ; Brázdil, Marian (referee) ; Šnajdárek, Ladislav (advisor)
Thesis describes the chemical and physical properties of methane hydrate, the presence and location of sites in various types of sediment. Goal of this work is to evaluate the proposed production methods of methane hydrate from the technological, logistical and economic aspects. With the technologies currently available, the best production method is depressurization. There is a high probability that in the next decade it will be used for the production of natural gas from methane hydrate. The conclusion is evaluating areas with high potential for industrial production.
Botnání Nafionové membrány a její předpověď skupinově-příspěvkovou metodou
Randová, A. ; Bartovská, L. ; Hovorka, Š. ; Izák, Pavel ; Poloncarzová, M. ; Kolská, Z.
The anisotropic swelling of Nafion 112 membrane in pure organic liquids was monitored by an optical method. The results were used as the input for application of the group contribution method to the relative expansion in equilibrium. Value of plus minus 1.5 % in relative expansions was determined to be the experimental error. Maximum differences between the experimental and calculated relative expansions did not exceed the value of plus minus 3 %.

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