72 research outputs found
Environmental aspects of the biodegradation of ores containing refractory gold from Western Carpathians
Country component contamination at the abandoned Cu-deposits of central Slovakia.
Dizertačná práca s názvom Kontaminácia krajinných zložiek na opustených Cu-ložiskách stredného Slovenska ozrejmuje vznik a vývoj zvolených modelových plôch – odvalov na ložiskách Staré Hory (Richtárová) a Ľubietová (Podlipa a Reiner). Nástrojmi GIS boli spracované základné údaje o kontaminácii krajinných zložiek (pôda, voda) banskou činnosťou ovplyvneného územia ťažkými kovmi a realizuje sa vizualizácia získaných údajov. Ďalším zameraním práce bolo modelovanie šírenia kontaminácie v krajine, potenciálnej a reálnej erózie, kinetiky šírenia znečistenia a pod. Výsledky práce môžu slúžiť ako modelový podklad pre vizualizáciu kontaminácie krajiny v ďalších banských regiónoch doma i v zahraničí a aj ako podklad pre pedagogickú činnosť, jednak v oblasti environmentalistiky, ale aj pri výuke GIS. Súčasťou dizertačnej práce sú aj ukážky vizualizácie kontaminácie odvalov ťažkými kovmi a niektorých predbežných GIS-modelovaní.The PhD thesis Country component contamination at the abandoned Cu-deposits of central Slovakia show the formation and development of selected model-areas – dump-fields at Staré Hory (Richtárová) and Ľubietová (Podlipa and Reiner). Using GIS tools were elaborated the base data about the country components (soil, water) contamination as a consequence of mining activities which influenced the pollution of the territory by heavy metals and the visualization of obtained data. The next aim of the thesis is the modeling of contamination spread in country, of potential erosion and of pollution spread kinetics. The results of the thesis will be able serve as a model base for country contamination visualization also at other mining regions also in abroad as well as a support for pedagogical activities, both in the field of environmental science and GIS teaching. Components of the thesis are also demonstrations of the dump-fields heavy metal contamination visualization and some other GIS-modelings.546 - Katedra environmentálního inženýrstvívyhově
Soil contamination by heavy metals at Libiola abandoned copper mine, Italy
Exploitation of ores has surely represented a risk for contamination of environmental matrices for a long time. This paper reports the results of a study concerning soil contamination by heavy metals at Libiola abandoned copper mine (Italy). This deposit has surely got special importance in Italy because of its historical, environmental and mining features. From a historical viewpoint, Libiola deposit was known since Copper Age, with maximum exploitation at the end of the 19th century. Our investigation plan was elaborated in order to characterize the environmental matrices there, and it provided for inspection of the zones (included in the valley of Gromolo stream) which, according to our preliminary studies and according to literature, could be most affected by past mining activity. Within our selected zones, some soils (even cultivated) were collected in order to check their contamination by heavy metals. Results from the analysis of the collected soil samples showed that the content of heavy metals often exceeds limits provided by the Italian Law 152/06. The knowledge of situation concerning pollution can give useful indications about the influence of mining activities on the surrounding environment, and it can also be valid support in order to organize an optimal future use of the studied mining area, which has been abandoned since its closure (1962).Web of Science23334533
Biomobilization and bioaccumulation of heavy metals in montaneous landscape (Banská Štiavnica, Slovak Republic)
Biodegradation of gold-bearing sulphide minerals of the Tatrikum unit (Western Carpathians, Slovakia)
Vybrané metody pro analýzu mnohorozměrných finančních dat
V praxi se často setkáváme s daty ve formě pozorování několika proměnných v různých časových okamžicích. Těmto datům říkáme časové řady. V práci se zabýváme vybranými přístupy analýzy časových řad; grafickými modely, vektorovými autoregresními modely a vektorovými modely klouzavých součtů. Snažíme se získat informace o vzájemné souvislosti jednotlivých proměnných a následně modelovat jejich chování. Použité postupy jsou ilustrovány na logarit- mických výnosech měsíčních průměrných hodnot devizových kurzů. Programy jsou zpracovány v softwaru Mathematica 7 a lze je nalézt na přiloženém CD. 1In practice, we often meet data in the form of observations of several variables at various points in time. These data are called time series. We present various approaches in time series analysis; graphical models, vector autoregres- sive models and vector moving-average models. We try to get information about mutual relationship of the variables and then to model their behavior. The used techniques are illustrated on log returns of monthly average exchange rates. The programs are processed in the software Mathematica 7 and can be found on the CD. 1Department of Probability and Mathematical StatisticsKatedra pravděpodobnosti a matematické statistikyFaculty of Mathematics and PhysicsMatematicko-fyzikální fakult
Incorporation of "invisible gold" to the sulphide minerals from Tatric unit (Western Carpathians, Slovak Republic)
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