|
|
Determination of kadmium content in plant tissue of Norway Spruce and European Beech after application of cadmium oxide nanoparticles
Svozilová, Eva ; Mikuška,, Pavel (referee) ; Večeřa, Zbyněk (advisor)
The aim of this thesis is to monitor cadmium content in needles of Norway spruce and European beech leaves after controlled exposure to cadmium oxide nanoparticles and evaluate the potential risks of such nanoparticles to plants. Needles and leaves were harvested after a one-week and two-week exposure and prior to analysis of cadmium content, they were modified using relevant procedures. Samples were mineralized in nitric acid using pressurized microwave mineralizer and subsequently analyzed by atomic absorption spectrometry (AAS) with electrothermal atomization of cadmium content. Based on the results AAS analysis the transport of nanoparticles into the plant tissue of studied species was evaluated, comparing the content of cadmium in one week and two weeks experiment in the washed and unwashed samples of needles and leaves.
|
|
|
Lead in the environment and its toxic effects
KUŘÁTKOVÁ, Klára
This diploma thesis on the topic "Lead in the environment and its toxic effect" is focused on the characteristic of toxic heavy metals, on the lead contamination of the environment and also on the toxic effect of lead. This diploma thesis also includes an insight into the individual components of the environment. The diploma thesis also contains a chapter about laboratory diagnostics and on the treatment of lead intoxication. Two aims are selected in this diploma thesis. The first one is to define lead, its propeties, localization, impacts on the environment and its toxic effects on human health. The second aim is to analyze data from a questionnaire survey about the public awareness of lead influence on the nature environment and the toxic effects of lead. The quantitative research was chosen for this diploma thesis, which was attended by 102 respondents. The conditions for participation in the research part weren´t set and data collection was implamented using anonymous questionnaire surveys. This diploma thesis can be used for study purposes and as a source of information about lead and its impact on the environment and its toxic effect on the human body. The result of the research is that respondents are well-informed about lead. They are acquainted with the information regarding the properties of lead and its use, and regardinglead contamination of the environment, as well as the fact that lead is legislatively monitored in the Czech Republic. Respondents also have an overview about lead effects on the human body and symptoms of lead intoxication.
|
|
|
Responses of Rhodococcus strains to heavy metal stress
Volf, Jan ; Štěpánek, Václav (advisor) ; Martínková, Ludmila (referee)
Increasing heavy metal pollution can be dealt with not only through physical and chemical decontamination processes but also utilizing microbial bioremediation, a much more environmentally friendly way. Members of genus Rhodococcus are suitable candidates for effective bioremediations of heavy metals due to their considerable adaptability and extreme resistance to different stress conditions, including those related to presence of heavy metals or their toxic compounds. Individual rhodococcal strains are more resistant to heavy metals than most of other microorganisms and they are capable of biotransformating them to less toxic forms or at least of accumulating effectively or adsorbing them on produced polysaccharides and specific surface active substances. Their bioremediation potential is very high even though, so far, only molecular mechanisms of rhodococcal resistances to toxic arsenic compounds have been studied more in detail.
|
|
|
The Politics of Prague's Metal Scene
Kurki, Alex ; Tomalová, Eliška (advisor) ; Oude Nijhuis, Dennie (referee)
This thesis examines the potential links between political behavior and the Prague metal scene. Many authors have suggested theories on links between music and politics, but there are few empirical studies on the topic. This thesis focuses on one genre of music in one space and cultural context: heavy metal music in Prague, Czech Republic. The literature on metal subcultures claims that they exist to perpetuate rebellion and transgression, and that members of these subcultures reject "politics"; however, metal is seen as political in some cases. Because of this, it is hypothesized that metal subculture members will have negative opinions on the political system and political participation, and will express support for anti-system parties or ideas. These hypotheses are tested through a qualitative thematic analysis of interviews and survey responses from 22 members of Prague's metal subculture. It is found that members of the subculture vote at a similar rate to the rest of the Czech population, and that the majority of participants identify as center-right or right-wing. The participants expressed ideas that were critical of the political system and of society discourses relating to politics. Furthermore, respondents viewed metal in Prague as apolitical, but felt metal could be political in some...
|
|
|
Relationship between Christianity and Metal Music
Boháč, Filip ; Hošek, Pavel (advisor) ; Bargár, Pavol (referee)
The purpose of my thesis is to extend the knowledge about an obscure cultural-religious relationship between Christianity and subculture of Metal music. The relationship between Christianity and Metal does not really come to mind as a topic for social discussion; rather it might appear as pointless or even unthinkable. Nevertheless, Metal music was responding to Christianity right from its origin and likewise Christianity was responding to Metal. Thus there was a specific relationship present from the beginning, which is surely worth to be tracking down. At times there were very acute violent escalations, and at other times they both were able to coexist next to each other or even together. At first, I will try to outline what the concept of Metal means, where it came from and how it came into an existence. Next I want to explore certain issues of this relationship, such as the religiosity of Metal music, "denominalisation" of Metal, survey of other works related to this topic and even the possible employment of music within Christian worship services. I will also address certain representatives of Christian Metal, so-called white Metal, satanistic blackmetal and their position/status on the world music scene. Thus, my focus is monitoring various layers of this relationship, partly from a historical...
|
|
|
The subculture of conterporary Czech bands of the new wave of heavy metal
Kolomazník, Tomáš ; Kandert, Josef (advisor) ; Oravcová, Anna (referee)
The thesis deals with with the subculture of Czech contemporary bands dedicated to the new wave of heavy metal. The first chapter introduces the theoretical concepts of subcultures and lifestyle. Apart from the classical approach to the theories of subcultures, also introduces the post-subculture approach of David Muggleton, who does not consider subculture as a stable social phenomena. The second chapter is devoted to the historical development of heavy metal, separately in the world and in the Czech Republic (former Czechoslovakia). Presented are metal genres that have played a key role in shaping the form of the modern metal subgenres. The third chapter is based on qualitative research using semi-structured interviews with members of the subculture and participant observation. The aim of the research was to determine the rules that operate within the subculture, the common features of its members, the meaning they attach their band and music, whether they have, in accordance to the theory of subcultures, common set of standards and values, how they stylize, and what are relationship within their subculture .
|
|
|
Determination of kadmium content in plant tissue of Norway Spruce and European Beech after application of cadmium oxide nanoparticles
Svozilová, Eva ; Mikuška,, Pavel (referee) ; Večeřa, Zbyněk (advisor)
The aim of this thesis is to monitor cadmium content in needles of Norway spruce and European beech leaves after controlled exposure to cadmium oxide nanoparticles and evaluate the potential risks of such nanoparticles to plants. Needles and leaves were harvested after a one-week and two-week exposure and prior to analysis of cadmium content, they were modified using relevant procedures. Samples were mineralized in nitric acid using pressurized microwave mineralizer and subsequently analyzed by atomic absorption spectrometry (AAS) with electrothermal atomization of cadmium content. Based on the results AAS analysis the transport of nanoparticles into the plant tissue of studied species was evaluated, comparing the content of cadmium in one week and two weeks experiment in the washed and unwashed samples of needles and leaves.
|
|
|
Heavy metal as a subculture
KOUTNÁ, Daniela
This bachelor thesis deals with heavy metal subculture. Its aim is to introduce the most important branches and to show broadness of heavy metal. This bachelor thesis describes development and history, briefly shows Czech heavy metal history alongside with the biggest and most popular Czech heavy metal festivals. It shows the most dressing concerns of society against this style.
|
|
|
MARGINAL MUSIC SUBCULTURES AND EASTHETIC CONNECTED WITH THEM AS A STARTING POINT OF THE AUTHOR'S PERFORMANCE.
Burdová, Barbora ; SMOLÍK, Robert (advisor) ; KRÁLOVÁ, Andrea (referee)
The whole thesis has been trying to have a look into marginal music subcultures
as a field of inspiration necessary with forming an author´s performance.
One of the main sources of that is the metal sub-culture which is divided into
other sub-sub-fields.
Author is fixing the blackmetal sub-culture into center of attention and she is
trying to undercover its possibilities by theatrical items. She is trying to look at
common values between theater and metal music and she is interested in how to
utilize music itself, which actually serves as sound curtain only.
During authors creation she is interested into expression means replacing the
text. Into the front position metal aesthetic is posted, as an outlet of
scenographic way of thinking and creating, and last but not least, it is the main
concern of interpretation of Sami´s culture and its transformation into theatrical
form.
|
|
|
Influence of Oxygen Partial Pressure in the Combustion Atmosphere on the Efficiency, Emissions, and Distribution of Heavy Metals in the Fluidized Bed Incineration of Corn Straw
Durda, Tomáš ; Pohořelý, Michael ; Šyc, Michal ; Svoboda, Karel ; Kameníková, Petra ; Jeremiáš, Michal ; Punčochář, Miroslav
This experimental study is focused on the corn straw incineration in a bubbling fluidized-bed reactor. The aim of this study is to compare the influence of oxygen partial pressure in the combustion atmosphere (air, oxygen-enriched air, pure oxygen ‒ oxy-fuel process) on the efficiency of the combustion process, the emissions of undesirable pollutants (CO, NOx, SO2, N2O, and dust) and distribution of heavy metals between individual output streams (bed ash, cyclone ash, and fly ash). The efficiency of the combustion process is compared on the basis of chemical unburned carbon (concentration of CO in the exhaust gas) and mechanical unburned particles (content of carbon in the solid form).
Fulltext: content.csg -  PDF
Plný tet: SKMBT_C22014091514571 - PDF
|
guest ::
