|
|
water as a source
Pečimúthová, Ivana ; Sedlák, Michal (advisor) ; Tsikoliya, Lenka (referee)
Water as a Source ABSTRACT Water is a ubiquitous substance that often goes unnoticed and underappreciated in our daily lives. Its significance is often only realized during periods of extreme fluctuations, such as droughts or floods. However, the importance of water as a source of sustenance, energy, and inspiration cannot be overstated, as it is a fundamental element for all life on earth. Despite its indispensability to humanity, much is still unknown about water, including its origins and unique properties. Contemporary science is just beginning to explore these questions across various scientific disciplines. This thesis aims to address some of these unanswered questions and explore the use of water as a resource, particularly in the spa and mining industries within the Ore Mountains foothills region (Podkrušnohoří). Additionally, it examines the historical perception of water and its significance to our ancestors. The underlying assumption of this work is that emotional responses to visual art can influence human emotions, leading to increased interest and appreciation of water as a valuable resource. Through this emotional aesthetic experience, individuals can begin to recognize water as an essential component of their own being and transform their relationship with it. Selected works by regional,...
|
|
|
Mercury content in muscle of chub (\kur{Leuciscus cephalus}) from the downstream tributaries of the Elbe river
KOLEK, Bohuslav
Mercury content in muscle of chub (Leuciscus cephalus) from the downstream tributaries of the Elbe river. The aim of the present study was to investigate the concentration of total mercury in muscle of 141 chub (Leuciscus cephalus) from seven Czech rivers (Vltava, Berounka, Sázava, Ohře, Otava, Lužnice, Labe) and to evaluate the potential risk of eating fish from the rivers. Total mercury values results from 2011 were compared with 2010. Mercury was determined by means of cold vapour atomic absorption spectrometry using AMA-254. The highest mean concentrations of total mercury were found in the Otava-Topělec (0,240 +- 0,106 mg/kg) for year 2010 and Labe-Obříství (0,222 +- 0,102 mg/kg) for year 2011. The lowest mean concentrations of total mercury were found in the chub from the Berounka-Beroun for both years (0,053 +- 0,013 mg/kg and 0,064 +- 0,010, respectively). The fish intake hazard index calculated were between 0,1 and 0,4 for the individual tributaries monitored. The results of this study show that hygienic limit for fish product (0,5mg.kg-1) was exceeded in Otava-Topělec (0,59mg.kg-1).
|
|
|
Occurrence of mercury in the soil around upper stream Ohře
MILLER, Zbyněk
The aim of this study was to summarize information about the behavior of mercury in soils, particularly the assessment of its mobility and bioavailability, and to verify the extent of contamination of alluvial soils under the reservoir Skalka. This research was aimed to evaluate the contamination of mercury floodplain soils with mercury belong the upper river Ohře near the town of Chvoječná, near 230th river kilometer. River sediments of the upper river Ohře and the surrounding alluvial soils in floodplains contain high mercury levels. The site has been sampled for mercury analysis of soil samples taken from farmed areas, which are expected enrichment of mercury deposits of the inserted river Ohře. There were two main types of land-use, permanent grassland and arable land. The observed results can be concluded that the river floodplain sediments enrich the soil with mercury. Analytical method (atomic absorption spectrometry, CV-AAS) showed that almost all surface soil samples from the flooded area exceeds the maximum allowed value (for light soils 0.6 mg.kg-1 and other land 0.8 mg.kg-1 ) that are designated for agricultural land. Indicative of mercury was determined by mobility, which was up to 2.18%. Levels of organic forms of mercury were also measured in the soils that reached the area of grassland 2 maximum 0.147 mg.kg-1; the subsidiary surface S1 had the relative distribution of organic mercury 10.98% at a depth of 101-140 cm.
|
|
|
Characteristics of the river Ohře and its usage for touring by water\\
PECHÁČEK, Miroslav
In the Czech Republic the number of people interested in touring by water is continually increasing. That{\crq}s why the main object of this dissertation is to present both the benefits and the disadvantages of the river Ohře. We also want to match the Ohře with the Vltava, our most frequented river. There are three different possibilities how to navigate. They depend of physical ability and technical outfit and it can take three, five or seven days. Each option is specific for certain group of watermen to suit by its character and appeal everybody who is interested in it.
|
guest ::
