|
| |
|
|
Diffusion in humic gels.
Královič, Michal ; Pospíšilová, Ľubica (referee) ; Klučáková, Martina (advisor)
This bachelor thesis is focuses on study of heavy metals diffusion in humic gels. The objective of the work was to verify, whether the diffusion is influenced by methylation of humic acid. Cupric and nickel cation was used in this thesis. Absorbance of solutions in acceptor and donor diffusion cell part was measured spektrofotometrically.
|
|
| |
|
|
Reaction synthesis of bulk intermetallic materials in Ti Ni system form kinetic spraying deposits
Dyčka, Martin ; Moravčík, Igor (referee) ; Jan, Vít (advisor)
Bachelor’s thesis deals with intermetallic compounds which are formed in nickel-titanium binary system. The theoretical part of this thesis deals with the best known titanium based intermetallics, diffusion and possible processing technologies of intermetallic materials. In experimental part, a nickel-titanium coating created by cold spray technique was used. The changes in microstructure depending on annealing temperature were analysed. The results contain photographs of microstructure and fractures, values of microhardness and results of chemical analyses.
|
|
| |
|
|
Nickel and its compounds
Pařízek, Ladislav ; Kábelová, Božena (referee) ; Pilátová, Ivana (advisor)
The focus of the bachelor’s thesis is searching of possible synthesis of selected compounds of the nickel. In the theoretic part are described chemical and physical properties of nickel and its compounds, which are connected with synthesis of three following compounds of nickel. The optimal procedure of preparation of nickel compounds was found in the experimental part of the bachelor.
|
|
| |
|
|
Cycling of selected metals in the environment.
Šebková, Michaela ; Diviš, Pavel (referee) ; Dočekalová, Hana (advisor)
This bachelor thesis deals with a group of selected metals (nickel, zinc, copper, cadmium and lead) in environmental components. It occupies with natural and anthropogenic inputs of metals to the atmosphere, the water und the soil and with their transport among them components. It engages too in a question of a penetration of metals to the biosphere and in their ensuant transport within the biosphere. At each metal is description of its natural sources, chemical and physical properties, inputs in environment, transport within the biosphere and positive and negative effects on living organism is described for each studied metal. The last chapter of this thesis deals with determination of selected metals in environmental components. It discribes procedures of determination from planning over sampling and processing of sample to the final determination of metals by instrumental methods.
|
|
|
Investování do drahých a průmyslových kovů
Nouza, Tomáš
The thesis deals with current opportunities for investing in precious and industrial metals. The literature overview introduces the reader with the current knowledge about commodity investments and provides results of various authors dealing with factors important for commodity price develop and with relation of commodity prices and inflation. Trough metal markets analysis identifies key factors with impact on sup-ply, demand and price of specific metal. Based on historical prices explores the relationship of metal prices, relationship of metal prices and stock market and business cycle. Quantify risk, which the investor has to accept in the case of investing in metals by using Value at Risk methods. The risk is compared with the level of risk on stock market. The thesis summarises all these results and formulate investment recommendation.
|
|
| |
guest ::
