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Ecotoxicological Assessment of Point Pollution in the Ecosystem
Doležalová, Šárka ; Beklová, Miroslava (referee) ; Kráčmar, Stanislav (referee) ; Koutný, Marek (referee) ; Vávrová, Milada (advisor)
The main subject of this dissertation is the ecotoxicological evaluation of significant point sources of pollution. These include wildfires and wide fires of factories and also industrial and urban wastewater treatment plants. The local application of pyrolytic product obtained from sewage sludge as the point source of pollution was also included in the thesis. Tests in aquatic and contact arrangement with using both water and soil organisms for ecotoxicity evaluation of selected matrices were chosen. Crustaceans Thamnocephalus platyurus, Daphnia magna Straus and sea bacteria Vibrio fischeri were selected as representative organisms of water animals. Duckweed Lemna minor was chosen as water plant. Further collembola Folsomia candida and earthworm Eisenia fetida were chosen as representatives of soil animals. Finally onion Allium cepa L. and mustard Sinapis alba are representatives of terrestrial plants. Submitted thesis deals about analytes of interest, their properties and ways of distribution to the environments. The output of the thesis is a comprehensive assessment of the effects of selected point sources of pollution on aquatic and terrestrial ecosystems organisms and ecotoxicological risks assessment. The fire extinguishing agents have been proven to be the most stressful substances for all selecteded organisms.
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Ecotoxicological evalution of agents based surfactants.
Doležalová, Šárka ; Vávrová, Milada (referee) ; Zlámalová Gargošová, Helena (advisor)
The surfactants have become a common part of everyday human life. For their properties they are used as aditive components of foam extinguishers used in large quantities for area fires fighting. This thesis deals with the ecotoxicological evaluation of commercially available fire-fighting agents Sthamex F 15, Moussol APS F 15, Finiflam F 15, Expyrol F 15 and Pyrocool B, which are made on the basis of surfactants. In the framework of this thesis the ecotoxicological effects of selected extinquishing agents were assessed through aquatic ecotoxicity tests with organisms Thamnocephalus platyurus, Daphnia magna, dicotyledonous plants Lemna minor and white mustard seeds Sinapis alba. Via tests of contaminated soils leachate the effect of soil sorption complex on the ecotoxicological effects was evaluated. Extinguishing agents were further considered in terms of acute ecotoxicity for soil organism via ecotoxicological tests in the contact arrangement using earthworm Eisenia fetida and lettuce seeds Lactuca sativa. To assess the influence of biodegradation under different conditions on ecotoxicological effects the seed germination tests of L. sativa were conducted with hindsight. According to the results of the individual tests this work discuss the need for further evaluation of the negative influence of selected agents, while paying special attention to legislative measures.
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Hybrid threats and national security agenda
DOLEŽALOVÁ, Šárka
Hybrid threats and the state security agenda are currently very much debated topics. With the continuous development of IT technologies and changes in military and non-military tactics, hybrid warfare is gradually becoming the dominant way of conducting modern conflicts, which take place largely in cyberspace. The national security agenda is closely related to hybrid threats, as it describes the functioning of the security system of the Czech Republic, in connection with both conventional and modern security threats. The objectives of this thesis are three in total, it involves obtaining information about threats in cyberspace, and how to counter these threats, and further analyze the emergence and spread of so-called fake news that threatens human society. Last objective is to describe the so-called information war and the competence of the government against the spread of fake news. The theoretical part of this thesis first deals with basic definitions from the areas of state security, state security system, hybrid warfare, cyberspace and fake news. The selected topics are related to the current situation and specifics in the Czech Republic. Next part of the theoretical part describes discursive analysis, as it is a method used in the practical part of this thesis. The practical part focuses on the discursive analysis of fake news from the Russia-Ukraine conflict. The basic article is about summary of several fake news and correcting them. For each fake news, there was an effort to find a relevant article from the Czech media and to find out to what extent the opinions in them coincide and how individual events are perceived in the Czech Republic. The resulting analyzes answered the question from the assignment "What effect do fake nws have on the state security policy?" How can we stop the spread of fake news?" And thanks to them, all 4 goals were met.
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Contemporary Israeli novel presented by Yehudit Katzir
Doležalová, Šárka ; Šedinová, Jiřina (advisor) ; Oliverius, Jaroslav (referee)
The present thesis deals with the evaluation of development of contemporary lsraeli novel, by comparing oftwo Yehudit Katzir's novels, Le-Matissejesh et ha-shemesh ba-beten (Matisse Has the Sun in His Bel/y, 1995) and Hine ani matchila (Here I begin/ Dearest Anne, 2003). The distinction between several periods in modem Hebrew literature is suggested, with regard to the thematic and conceptional development of contemporary lsraeli novel during the last three decades and the lsraeli novel presented by women fiction. The basic biographical data about Yehudit Katzir, the compendium ofher writing, and a summary ofthree ofher books, subjected to analysis in the following chapters - a collection ofnovellas Sogrim et hayam (Closing the Sea, 1990), and two aforementioned novel s - are submitted. Particular attention is given to the reflection of these books by current lsraeli critique.
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Construction of far right member in "NEOnácek: Chcete ho?" campaign
Doležalová, Šárka ; Vochocová, Lenka (advisor) ; Křeček, Jan (referee)
Diploma thesis "Construction of far right member in ‚NEOnácek: Chcete ho?' campaign" deals with how young people perceive the current neo-Nazis and how they construct a member of a group of extreme right wing on the basis of that campaign. This work tries to use a qualitative approach to look into the effect of the campaign on ideas of the target group. The theoretical part deals with the social construction of reality in conjunction with the stereotyping and extreme right in the Czech Republic in connection with subculture topic. Subsequently it investigates the area of homosexuality and social marketing. The research part is formed by view of the advertiser, the creator of the campaign on his own campaign and its means of expression. Then there is the analysis of interviews with the representatives of the target group, which describes how young people construct the neo-Nazis and what ideas are connected with this movement.
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Visual communication of Tatra Kopřivnice during thirties of the twentieth century
Doležalová, Šárka ; Trampota, Tomáš (advisor) ; Pruša, Igor (referee)
This bachelor work is called The visual communication of Tatra Koprivnice Company during thirties of the twentieth century. Its aim is to describe visual communication of Tatra (a car maker) during thirties of the twentieth century. It starts with definition of communication and communication models. Then it mentions different motivations to communication and communication functions. Next part defines marketing and marketing communication. Other chapters deal with brand and its theory. The brief history of Tatra company is mentioned with emphasis on its economical progress and successes of Tatra cars in car competitions and various heuristic journeys made with Tatra cars. The last part is about background of the communication. The last part is the semiotic analysis of ten different visual materials from thirties. All of themare promotional ones. Powered by TCPDF (www.tcpdf.org)
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Ekonomické srovnání semenářské produkce jetelovin a obilnin
Doležalová, Šárka
The topic of this bachelor thesis is Economic comparison of seed production of clovers and grains in selected company. The theoretical part summarizes the history of clover seedlings in the Czech Republic and the current situation in the field of clover seedlings. The current situation describes the development and current state of seed production of clovers in terms of size, cultivated species and yields. Furthermore, the situation in the Czech Republic and the situation abroad are evaluated. The thesis describes the technology of growing red clover, which belongs to our most important forage crops. Then, the benefits that clover cultivation brings to the enterprise include, for example, the use of red clover as forage because of mineral content and protein, soil fertility. The practical part is devoted to calculations of economic efficiency of clover and grains from the data of the selected company. The SWOT analysis summarizes the strengths, weaknesses, threats and opportunities of growing clover.
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Ecotoxicological Assessment of Point Pollution in the Ecosystem
Doležalová, Šárka ; Beklová, Miroslava (referee) ; Kráčmar, Stanislav (referee) ; Koutný, Marek (referee) ; Vávrová, Milada (advisor)
The main subject of this dissertation is the ecotoxicological evaluation of significant point sources of pollution. These include wildfires and wide fires of factories and also industrial and urban wastewater treatment plants. The local application of pyrolytic product obtained from sewage sludge as the point source of pollution was also included in the thesis. Tests in aquatic and contact arrangement with using both water and soil organisms for ecotoxicity evaluation of selected matrices were chosen. Crustaceans Thamnocephalus platyurus, Daphnia magna Straus and sea bacteria Vibrio fischeri were selected as representative organisms of water animals. Duckweed Lemna minor was chosen as water plant. Further collembola Folsomia candida and earthworm Eisenia fetida were chosen as representatives of soil animals. Finally onion Allium cepa L. and mustard Sinapis alba are representatives of terrestrial plants. Submitted thesis deals about analytes of interest, their properties and ways of distribution to the environments. The output of the thesis is a comprehensive assessment of the effects of selected point sources of pollution on aquatic and terrestrial ecosystems organisms and ecotoxicological risks assessment. The fire extinguishing agents have been proven to be the most stressful substances for all selecteded organisms.
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