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Study of strange particle production in jets with the ALICE experiment at the LHC
Kučera, Vít ; Bielčíková, Jana (advisor) ; Dolejší, Jiří (referee) ; d´Enterria, David (referee)
Title: Study of strange particle production in jets with the ALICE experiment at the LHC Author: Vít Kučera Institute: Institute of Particle and Nuclear Physics Supervisors: RNDr. Jana Bielčíková, Ph.D., Nuclear Physics Institute of the CAS; Dr. Christian Kuhn, Institut Pluridisciplinaire Hubert CURIEN Abstract: Quark-gluon plasma is a state of matter existing under extreme energy densities and temperatures where quarks and gluons are deconfined. Complex phenomena occurring in the plasma emerge from the strong interaction of its constituents. This hot and dense strongly interacting matter can be created in ultra-relativistic heavy-ion collisions and its properties can be studied by measuring particles produced in the collisions. Partons produced in hard scatterings interact with the medium which modifies the production of particles in jets. Measurements of spectra of identified particles produced in jets represent an important tool for understanding the interplay of various hadronization mechanisms which contribute to the particle production in the medium created in heavy-ion collisions. In this thesis, we present the measurement of the pT spectra of Λ baryons and K0 S mesons produced in charged jets in central Pb-Pb collisions at the energy √ sNN = 2.76 TeV, measured in the ALICE experiment at the LHC. The...
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Structural analysis of natural compounds with aliphatic branched chains using mass spectrometry
Strmeň, Timotej ; Cvačka, Josef (advisor) ; Kozlík, Petr (referee)
The diploma thesis focuses on analysis of fatty alcohols with mass spectrometry. Theoretical part describes distribution, main properties, usage and analytical methods for analysis of fatty alcohols. Experimental work focuses on the search for a proper derivatisation procedure for fatty alcohols, which would enable their detection with soft ionisation techniques of mass spectrometry, as well as their structural analysis. The main aim of the structural analysis is to find the methyl branching in the fragmentation spectra of derivatives of the fatty alcohols.
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Fragmentation and homogenization of forest communities in urban areas
Pevná, Tereza ; Vojta, Jaroslav (advisor) ; Prach, Jindřich (referee)
This bachelor thesis deals with issue of fragmentation and homogenization of forest communities in urban areas. The habitat fragmentation could be natural or anthropogenic. The main cause of the habitat fragmentation is currently human activity. We can count urbanization among the most significant of these activities. The extinction is one of the few effects, which is however very significant for the biodiversity of the fragmented habitat. The extinction of species in the fragmented habitat does not necessarily occur immediately. In the fragmented habitat, a decrease in the number of species can take place with some delay. There is another fact connected to the extinction in the fragmented habitat. The biotic homogenization can also occur in the fragmented habitat. The biotic homogenization is distinctive and easily observable particularly in urbanized area. Powered by TCPDF (www.tcpdf.org)
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Methods for studying seed dispersal and its importance for colonization of new sites
Vlasta, Tomáš ; Knappová, Jana (advisor) ; Hemrová, Lucie (referee)
Study of seed dispersal is crucial for understanding of several processes in life of plants and landscape. Seed dispesal is very important for persistence of local populations in fragmented landscape, it plays an important role in succession, it helps to protect plant populations againts loss of genetic variability. We usually recognize several types of seed dispersal depending on vector (dispersal by wind, animals and water.) In nature, it is very common that seed can be independently dispersed by several vectors. Therefore, studying of polychory and secondary dispersal is necessery. Methods of studying of seed dispersal are very variable, including seed traps, releasing and following individual seeds, genetics marcers etc. If we study seed dispersal, we should select the most suitable method depending on the aim of the study. We should also take into acount advantages and disadvantages of single method.
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Ideologization and fragmentation of Skinhead subculture
Novotný, Jaroslav ; Charvát, Jan (advisor) ; Franěk, Jakub (referee)
The master thesis titled Ideologization and fragmentation of Skinhead subculture deals with historical background of Skinhead subculture genesis and with cleavages, that determinated its ideologization and fragmentation. Simultaneously it pays close attention to analysis of various branches of the Skinhead subculture. The first chapter of the thesis builds theoretical foundations of the research. In this chapter the terms culture, subculture and counterculture are explained. Accentutation is placed on common denominators as well as on differences in the definition of these terms. The second chapter of the master thesis deals equally with historical background of Skinhead subculture genesis and with subcultures with a significant impact on the formation of the Skinhead subculture. In this chapter the attention is focused on historical facts of political development in Great Britain after The Second World War, on subcultures popular at that time and on foundation of the Skinhead subculture. The third chapter of this thesis analyzes infiltration of the political ideologies inside the subculture and the following fragmentation of Skinheads. Research in this chapter is focused on the spread of extreme right-wing elements, foundation of the racist branch of the subculture and sequentially on the reaction...
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Consociational theory - Libanon case study
Coufal, Ondřej ; Říchová, Blanka (advisor) ; Gelnarová, Jitka (referee)
This bachelor thesis deals with contribution of Consociational theory for Lebanon in 1943 till 1975 and during a follow-up state's reconstruction in 1989 after a civil war. In 1943 Lebanon becomes an independent state for the first time and its political system contained Consociational principles described by Netherland's political scientist Arend Lijphart. Those were present in order to keep the system stable despite wide religious fragmentation which was the Lebanon's case. The possibility of taking part in political decision making had all of the relevant groups. Institutional organization matched the basic Consociational conditions but the society was divided ideologically and socially. Arab nationals appeared among the Muslims whilst the Christians rather advanced the Lebanese nationalism. Problems were also brought together with a bad socioeconomic situation which was mostly a disadvantage for Muslims. Already a situation this difficult was intensified by a long-termed Arab-Israeli conflict and the Palestinian migration in Lebanon going along with it. The aim of this thesis is to find out how the elites dealt with such a difficult situation in 1943 till 1975 then to evaluate the presence of Consociational principles and their contribution.
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First Czechoslovak Republic in a context of consociational theory
Zavřel, Filip ; Říchová, Blanka (advisor) ; Gelnarová, Jitka (referee)
This bachelor thesis called "First Czechoslovak Republic in the context of theory of consociational democracy" deals with the analysis of the political system of the first Czechoslovak Republic in order to determine wheter and/or to what extent this system contains components which are characteristic of the theory of consociational democracy, as described by the Dutch political scientist Arend Lijphart in sixties of 20th century. It focuses on the analysis of the system in the fields of fragmentation, electoral and party system, the results of elections to the National Assembly, negotiations of political elites and the formation and functioning of coalition governments. It's based on the thesis that the political system of the first Czechoslovak Republic included components later associated with the theory of consociational democracy, especially in the form of a grand coalition goverment (with the participation of representatives of the German minority since 1926) and relatively long-term systemic stability, achieved despite extensive fragmentation of society, which was cleaved especially nationally. The period covered is the whole era of the first republic, thus since the year 1918 untill 1938.
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Fragmentation and Disjointedness in Samuel Beckett's Plays
Halášková, Lucie ; Pilný, Ondřej (advisor) ; Armand, Louis (referee)
The aim of this thesis is to explore different levels of fragmentation and disjointedness in Samuel Beckett's Endgame, Krapp's Last Tape, Happy Days, and Play. Firstly, certain concepts are exposed as being fragmentary. The concepts which are examined in relation to fragmentation and disjointedness are language, time, identity, and reality. The motivation behind this part of the research was to expose the subjectivity and multiplicity of these concepts, and to examine how they function in the four treated plays. Furthermore, this thesis seeks to examine Beckett's use of fragmentation and disjointedness in correlation with incompleteness, examining the importance of what is present but also what is absent in the treated plays. In chapter 2, the relationship between the form and function of language is examined, exploring the different factors that affect one's perception towards language. Language is examined within a subjective, contextual, and social framework. The characters of the treated plays prove that language is a delicate method of expression, often resulting in rifts in communication. The third chapter deals with the fragmentation and subjectivity of time, identity, and reality. Time is examined in relation to the characters, delving into the problem of the characters' perception of the...
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Vliv fragmentace a ztráty habitatu na primáty
Sniegon, Arthur F. ; Sedláček, Ondřej (advisor) ; Pluháček, Jan (referee)
Anthropogenic activities and human encroachment may cause profound and often irrevocable changes in an environment. This may result in challenges for most of the wildlife, including our closest extant relatives, non-human primates. Worldwide, primates may be particularly susceptible to human-induced habitat alterations owing to their large body size, social way of life, slow reproduction, large home-ranges, naturally low population densities and often strong dependence on forest cover. Three main phenomena have been described as major threats for primates: loss of the natural habitat and its conversion to human-dominated landscape, fragmentation of the remaining patches of suitable habitat, and commercial bushmeat hunting. Here I review the first two processes. If primates survive the initial disturbance, they are forced to adjust their demographic, behavioural and dietary traits. However, this may not be enough for their persistence in a long term as their genetic diversity might be compromised. Moreover, also parasitic infections may impact severely the disrupted populations. In this thesis, I reviewed the current knowledge in primates demography, population genetics, dietary changes and parasite interactions in altered habitats. Most of the studies examined the African continent and Latin America, a...
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