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Echoes of antiquity in the early work of Otakar Theer
Kochová, Denisa ; Topor, Michal (advisor) ; Vojtěch, Daniel (referee)
This bachelor thesis deals with the ancient inspiration in the early works of Otakar Theer, i.e. until the end of 1897, when he published his book Háje, kde se tančí. Firstly, the thesis outlines basic parameters, stereotypes in the reception of ancient culture in the course of European history, especially in the nineteenth century. Next, the thesis focuses on the position of Greek and Latin languages and facts about ancient cultures in school curriculum, based on the common discussion about how appropriate and useful these were in the decades around the turn of the nineteenth and twentieth century. In particular, special consideration is given to their practical application in school curriculum of gymnasium in Žitná, Prague, where Otakar Theer studied in 1890-1899. Following this research, the thesis attempts to reconstruct more impulses and contexts (decadence, naturism) that influenced Theer's vision of ancient Greece and Rome, and which he also tackled in his own way in Háje, kde se tančí.
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Phase transformations in ultra-fine grained titanium alloys
Bartha, Kristina ; Stráský, Josef (advisor) ; Kalvoda, Ladislav (referee) ; Vojtěch, Dalibor (referee)
Title: Phase transformations in ultra-fine grained titanium alloys Author: Kristína Bartha Department: Department of Physics of Materials Supervisor of the doctoral thesis: PhDr. RNDr. Josef Stráský, Ph.D., Department of Physics of Materials Abstract: Ti15Mo alloy in a metastable β solution treated condition was processed by high pressure torsion (HPT) and equal channel angular pressing (ECAP). The microstructure after HPT is severely deformed and ultra-fine grained, while ECAP deformation results in rather coarse-grained structure with shear bands containing high density of lattice defects. Two types of thermal treatments - isothermal annealing and linear heating - were carried out for the solution treated condition and both deformed materials. Wide spectrum of experimental techniques was employed to elucidate the differences in phase transformations, especially in α phase precipitation, occurring in deformed and non-deformed material upon thermal treatment. It was shown that the α phase precipitation is accelerated in the deformed materials due to a high density of lattice defects, which provide a dense net of preferred sites for nucleation and also fast diffusion paths necessary for accelerated growth. The enhanced precipitation of the α phase in deformed materials also affects the stability of the ω...
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Preparation and Characterization of Porous Magnesium Based Materials
Březina, Matěj ; Pacal, Bohumil (referee) ; Vojtěch, Dalibor (referee) ; Ptáček, Petr (advisor)
Bulk magnesium materials produced nowadays via powder metallurgy are based on a vastly extensive technological spectrum, which makes it possible to create a wide range of materials. This work focuses on the preparation of bulk materials from magnesium powder by cold pressing and hot pressing, sintering and field assisted sintering. The bulk materials were prepared in a series of compacting pressures from 100 MPa to 500 MPa and the sintering temperatures were selected in the range of 300 ° C to 600 ° C in order to characterize the influence of the manufacturing conditions and technology on the final properties of bulk materials. Prepared materials were evaluated in terms of microstructure, hardness, microhardness, three-point bend test, and fractography. From the hot pressed materials, the samples prepared at 400 and 500 MPa and 400 °C had the highest strength and hardness. The classic sintering of magnesium in the furnace with argon atmosphere proved to be ineffective due to the oxide layer on the surface and the presence of oxygen in technical argon. The SPS sintering (Spark Plasma Sintering) was the more effective with the lower applying pressure used to make the preforms and with the higher applied pressure during the SPS process itself. Highest strength and hardness were achieved in this case of materials sintered at 600 ° C prepared from free powder and the most porous preform (100 MPa). The bulk materials were prepared using all methods used, but the properties of these materials varied considerably depending on the technology used.
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Program of the Czech Decadent Movement and the Question of Intertextuality. Tho Work of Miloš Marten
Kantoříková, Jana ; Vojtěch, Daniel (advisor) ; Heczková, Libuše (referee) ; Lishaugen, Roar (referee)
The Program of the Czech Decadent Movement and the Question of Intertextuality. The Work of Miloš Marten This thesis explores the work of Miloš Marten (1883-1917) seeking to analyse its decadent narrative as a modern narrative that brings into play the unity between the pinnacle and the decline. It departs from the comparison between the style and interpretation of the two versions of Cyklus rozkoše a smrti (orig. The Cycle of delight and death; 1907 and 1917/1925) and the study of the realisations of this work. For this purpose the study contextually examines the conceptions of "intertextuality" from fin de siècle authors-critics, meaning their conceptualisations of similarity and/or identity of literary works which frequently involve a confluence of degeneration theory, the argument of the non-ethical nature of plagiarism and theory of decadence. All were often used as instruments of disqualification as well as justifications for a modern aesthetics and style. Reconstitution of Marten's theoretical reflection on artistic genres evidences his research of a harmonizing modern culture within an anti-syncretic tendency: mythology and revolt against myth Order being shifted to tragedy and parable, while the novel is designed as an analytical-critical synthesis. Applying contemporary approaches to...
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Advanced aluminium alloys prepared by powder metallurgy and spark plasma sintering
Molnárová, Orsolya ; Málek, Přemysl (advisor) ; Haušild, Petr (referee) ; Vojtěch, Dalibor (referee)
Mechanical properties of aluminium alloys highly depend on their phase composition and microstructure. High strength can be achieved among others by introduction of a high volume fraction of fine, homogeneously distributed second phase particles and by a refinement of the grain size. Powder metallurgy allows to prepare fine grained materials with increased solid solubility which are favourable precursors for further precipitation strengthening. Gas atomization was used for the preparation of powders of the commercial Al7075 alloy and its modification containing 1 wt% Zr. A part of gas atomized powders was mechanically milled at different conditions. Mechanical milling reduced the grain size down to the nano-size range and the corresponding microhardness exceeded the value of 300 HV. Powders were consolidated by the spark plasma sintering method to nearly fully dense compacts. Due to a short time and relatively low temperature of sintering the favourable microstructure can be preserved in the bulk material. The grain size of compacts prepared from milled powder was retained in the submicrocrystalline range and the microhardness close to 200 HV exceeded that of the specially heat treated ingot metallurgical counterparts. The prepared compacts retained their fine grained structure and high...
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Magnesium alloys designed for medical applications
Zemková, Mária ; Minárik, Peter (advisor) ; Vojtěch, Dalibor (referee)
Title: Magnesium alloys designed for medical applications Author: Mária Zemková Abstract: This Master thesis is focused on the influence of hot extrusion and equal channel angular pressing (ECAP) on the microstructure, mechanical and corrosion properties of magnesium alloys. Investigated materials include three magnesium alloys with the addition of neodymium and/or yttrium elements - N3, W3 and WN43, as a potential material for medical applications. Moreover, the influence of alloying elements in solid solution state was studied. Microstructure development was characterized by scanning electron microscopy together with transmission electron microscopy and X-ray diffraction. Mechanical properties was studied by compression deformation tests in two perpendicular directions and by microhardness tests. The linear polarization method was used to study corrosion resistance. The processing though ECAP resulted in grain refinement in all three alloys. Ultra-fine grained microstructure was achieved in W3 and WN43 alloy. The high degree of recrystallization during ECAP caused the formation of high-angle grain boundaries in all three alloys. Weak texture evolution was maintained during both processings. A different initial fraction of intermetallic phases before extrusion led to significant changes of microstructure...
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Objectivity and comicality in short stories of Ladislav Dvořák
Fučíková, Zuzana ; Vojtěch, Daniel (advisor) ; Špirit, Michael (referee)
This thesis examines the prosaic works of Ladislav Dvo ák (1920-1983), specifically the collection of short stories entitled Šavle me e. It analyses the construction of Dvo ák's texts with regard to two significant aspects. First it deals with the connection between reality and the world depicted in the narrative. With the help of the concept of objectivity', adapted for literary interpretation, it explores the role of facts, description and narrator in the text. The second part treats the function of comedy in the stories, especially the difference between comical and humorous characters and the role of the verbal and situational humor. The analysis is based on the theories of P emysl Blaží ek and Milan Jankovi , who treat the specifics of creating meaning in literature.
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Interpretation of the novel Spas by Ivan Matoušek
Malá, Lucie ; Vojtěch, Daniel (advisor) ; Málek, Petr (referee)
The master thesis discusses the novel Spas by Ivan Matoušek published in 2001. The description of the structure and narrative time of the novel is followed by a characterization of the ironic self-conscious narrator and his relationship to the fictional world and the main character. The interpretation is partly inspired by a theoretical paper on irony by Vladimir Jankélévitch, which is compared with Paul de Man's concept of irony. The thesis also refers to Linda Hutcheon's theory of self- reflexivity and metafiction and employs the concept of mise en abyme.
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Emanuel Hauner's conversion and reconversion at the fin de siècle
Semsch, Alžběta ; Vojtěch, Daniel (advisor) ; Merhaut, Luboš (referee)
The goal of the final thesis Emanuel Hauner's conversion and reconversion at the fin de siècle is to introduce and to interpret Emanuel Hauner's major poetic works, which have been so far neglected by the Czech literary history. My goal was to analyze the reasons of refusal of his works by both readers and critics. To make this analysis precise, it was necessary to take a close look at two phenomena appearing in Hauner's work: stylization and epigonism. The second major goal of this thesis was to answer the question of how Hauner's relation to occultism and Catholicism influenced his works. I was looking for other European authors that, similarly to Hauner, converted to Catholicism and in some parts of their lives had affinity for occultism. I have thus put Hauner's work both in the context of work of authors in whose work the conversion to Catholicism played a major role, and in the context of the artistic criteria of his time. Keywords: Catholicism, Czech literature, decadence, Emanuel Hauner, epigonism, fin de siècle, martinism, occultism, Rudolf Steiner, stylization, Sursum, theosophy
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"To be a tree where there is no hubbub": Poetics of Solitude in the Works of Ludmila Macešková
Boháčová, Kristýna ; Vojvodík, Josef (advisor) ; Vojtěch, Daniel (referee)
The thesis follows the line of solitude in the poetry of Jan Kameník (which is the pen name of Ludmila Macešková). It notices the impossibility of classifying him into the literary groups active from 40's to 60's. It also observes his dramatic way which was motivated by desire to find the expression for his spiritual experience. First, the thesis focuses on places which illustrate the phases during the way. Then it centres on the poetic language which moves to the boundaries of communicability. Last, it comes to the touch like specific revelation of name where all differences are overcame.
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