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Návrh ojnice vznětového leteckého motoru / Connecting Rod Design of Diesel Aircraft EngineMaršálek, Ondřej January 2011 (has links)
The thesis deals with complex connecting rod design of two stroke diesel engine with regard to minimising its weight. Three versions of design are suggested and for each of them the stress analyses are implemented and the fatigue safety factors are determined. On the basis of results of implemented analyses and evaluation of all the aspects the most appropriate design is chosen and the production drawing is drawn according to it. In the conclusion, hydrodynamic lubrication plain bearings, which are the integral part of every connecting rod, are designed.
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Lávka pro pěší / FootbridgeČernoch, Jakub January 2017 (has links)
Master´s thesis deals with design and complex static assessment of steel and timber cable stayed footbridge structural system over the water area. The footbridge is situated into the area of Podyjí National Park near the city of Hnanice. Footbridge span is being used as 52 metres. The structure is formed by flat arched main beams, floor beams, crossbeams, under-deck bracing, pylons and rods. From two variations of footbridge, one was selected and elaborated in more details.
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Pracovní migrace Mongghulského rodu Ha do Aksu v Xinjiangu / Labour migration of the Hawan Ha Clan Mongghul to Aksu in XinjiangHa, Mingzong January 2012 (has links)
Labour Migration of the Hawan Ha Clan Mongghul to Aksu in Xinjiang Abstract: The current work focuses on the ongoing labour migration of the Mongghul Ha Clan from Hawan, Gansu Province to Aksu in southern Xinjiang. It presents the motivation for the migration, and examines the social, economic and cultural changes the migration has catalyzed. Impacts on local Uyghur engendered by in-migrants are discussed. The work also features an overview and a generalization of the contemporary labour migration in China and Xinjiang in particular. Interviews with migrants are transcribed in Mongghul and translated to English and serve as an important source for the work.
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Jazyková feminizace v současné portugalštině / The Linguistic Feminization in Contemporary PortugueseFolvarčný, Martin January 2020 (has links)
This diploma thesis focuses on the expression of the feminine gender in contemporary Portuguese. It is mainly concentrated on the manifestations of linguistic feminization within two language variants of Portuguese (European and Brazilian). The thesis is divided into several parts. The first part focuses on general issues related to the grammatical category of gender. This means that the linguistic gender is examined from a historical, semantic and syntactic point of view. Due to different interpretations of this category, the very nature of the grammatical gender is also discussed. The second part analyses the different ways in which the feminine gender can be expressed in contemporary Portuguese. The practical part is introduced by the third chapter and is connected with the main goal of this diploma thesis. It consists in verifying whether the manifestations of linguistic feminization, in this case the use of gender inflected forms, are common linguistic phenomena in Portuguese or not. To confirm this statement, linguistic data from two language corpora were used for this verification. Furthermore, the answers to the online questionnaire aiming at this issue became an additional source of the necessary data. The resulting figures prove a certain presence of linguistic feminization in both...
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Die Saalebrücke in Alsleben: Eine Dokumentation der BaugeschichteStandfuß, Friedrich January 2000 (has links)
Die Saalebrücke bei Alsleben ist ein Bauwerk mit bewegter Geschichte, die in diesem Buch detailliert rekonstruiert wird. Dabei wird – neben historisch interessanten Fakten – die Sicht vor allem auf die bautechnischen Details gelegt. So wird am Anfang die Entstehung von der ersten Idee bis zur Vergabe beleuchtet, wobei dies einen guten Einblick in die damalige Zeit gibt, in dem die Unterschiede, insbesondere aber auch die eine oder andere Gemeinsamkeit zur heuteigen Zeit aufgezeigt werden. Anschließend wird die zu diesem Zeitpunkt erstmalig verwendete Konstruktionsweise für eine Bogenbrücke mit vorgespanntem Zugband erklärt, die das Bauwerk, nicht nur wegen seines hauptverantwortlichen Planers – Franz Dischinger –, sondern vor allem konstruktiv zu einem besonders Erhaltenswerten macht.
Der Bedarf einer Erhaltungsmaßnahme entstand das erste Mal nach dem 2. Weltkrieg, als ein Bogen der Vorlandbrücke des Bauwerkes gesprengt wurde. In der Dokumentation des Wiederaufbaus wird vor allem die Schwierigkeit eines solchen Unterfangens kurz nach Kriegsende deutlich.
Aufgrund der lückenhaften Dokumentation und der mangelhaften Bauwerkserhaltung während der DDR-Zeit ist auch das nächste Kapitel in der Geschichte von Erhaltung geprägt. Ausführlich werden die Zustandsermittlung und die darauf folgende grundhafte Instandsetzung des sich in einem desolaten Zustand befindlichen Bauwerks nach der Wiedervereinigung beschrieben. Die sehr detaillierte Dokumentation von der Planung über die Bauausführung bis hin zu den Nacharbeiten infolge von Baumängeln sowie die Kostenaufstellung sind vor allem für fachliche interessierte Leser empfehlenswert.:Ein persönliches Vorwort S. 3
1. Die Bemühungen um den Bau der Brücke (1891 bis 1927) S. 7
2. Dau Bauwerksentwurf (1927) S. 13
3. Das vorgespannte Zugband von Dischinger (1928) S. 14
4. Ausschreibung, Angebotsbewertung und Bauvertrag (1927/1928) S. 19
5. Die Grundsteinlegung (1928) S. 29
6. Die Bauausführung (1928) S. 33
7. Die Verkehrsfreigabe (1928) S. 38
8. Die Gewährleistungsfrist (1929 bis 1933) S. 47
9. Das Brückengeld (1928 bis 1946) S. 49
10. Sprengung und Wiederaufbau (1945) S. 53
11. Zustand und Tragfähigkeit (1992) S. 59
12. Die Planung der Instandsetzung (1994 bis 1996) S. 74
13. Die Ausschreibung der Instandsetzung (1996) S. 77
14. Entwurf und Bau der Behelfsbrücke (1996 bis 1997) S. 84
15. Die Ausführung der Instandsetzung (1997 bis 2000) S. 104
16. Die Schäden bei der Instandsetzung des Überbaues Ü 3 S. 214
17. Die Verkehrsfreigabe (2000) S. 246
18. Die Kosten S. 249
19. Rückblick und Ausblick S. 262
20. Literatur S. 264
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Interference v genderové konceptualizaci neživých referentů u maďarských bilingvistů / Interferences in the gender conceptualization of inanimate referents in bilingual Hungarian speakersČervenková, Michaela January 2019 (has links)
This work deals with possible interferences in gender conceptualization of inanimate objects in bilingual speakers of Hungarian and Slovakian language. It closely pursues the grammatical category of gender (which is present in one of the examined languages, in Slovakian, and absent in the other one - Hungarian). The aim of the performed experiment, in which two groups of speakers participated (one was the previously mentioned group of bilingual speakers of Hungarian and Slovakian, and the second one was a control group of Hungarian monolingual speakers) was to verify if the presence of grammatical gender in one of the two languages, spoken by the bilingual group of speakers, will affect their conceptualization of gender of the inanimate referents. Another aspiration was to find out if bilingual speakers, as well as the monolingual speakers of Hungarian had accordant responses to some of the inanimate objects, and also if there was a congruence in the responses between the two participating groups of speakers. A secondary aim of this experiment was to examine a phenomenon, which appeared in the previous conducted research (Červenková, 2017), which was the effort of the respondents to make the first phoneme of their response identical with the first phoneme of the name of particular object in...
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Development of Effective Algorithm for Coupled Thermal-Hydraulics – Neutron-Kinetics Analysis of Reactivity TransientPeltonen, Joanna January 2009 (has links)
Analyses of nuclear reactor safety have increasingly required coupling of full three dimensional neutron kinetics (NK) core models with system transient thermal-hydraulics (TH) codes. To produce results within a reasonable computing time, the coupled codes use different spatial description of the reactor core. The TH code uses few, typically 5 to 20 TH channels, which represent the core. The NK code uses explicit node for each fuel assembly. Therefore, a spatial mapping of coarse grid TH and fine grid NK domain is necessary. However, improper mappings may result in loss of valuable information, thus causing inaccurate prediction of safety parameters. The purpose of this thesis is to study the sensitivity of spatial coupling (channel refinement and spatial mapping) and develop recommendations for NK-TH mapping in simulation of safety transients – Control Rod Drop, Turbine Trip, Feedwater Transient combined with stability performance (minimum pump speed of recirculation pumps). The research methodology consists of spatial coupling convergence study, as increasing number of TH channels and different mapping approach the reference case. The reference case consists of one TH channel per one fuel assembly. The comparison of results has been done under steady-state and transient conditions. Obtained results and conclusions are presented in this licentiate thesis.
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Activation of mTORC1 Improves Cone Cell Metabolism and Extends Vision in Retinitis Pigmentosa Mice: A DissertationVenkatesh, Aditya 12 April 2016 (has links)
Retinitis Pigmentosa (RP) is an inherited photoreceptor degenerative disease that leads to blindness and affects about 1 in 4000 people worldwide. The disease is predominantly caused by mutations in genes expressed exclusively in the night active rod photoreceptors; however, blindness results from the secondary loss of the day active cone photoreceptors, the mechanism of which remains elusive. Here, we show that the mammalian target of rapamycin complex 1 (mTORC1) is required to delay the progression of cone death during disease and that constitutive activation of mTORC1 is sufficient to maintain cone function and promote cone survival in RP. Activation of mTORC1 increased expression of genes that promote glucose uptake, retention and utilization, leading to increased NADPH levels; a key metabolite for cones. This protective effect was conserved in two mouse models of RP, indicating that the secondary loss of cones can be delayed by an approach that is independent of the primary mutation in rods. However, since mTORC1 is a negative regulator of autophagy, its constitutive activation led to an unwarranted secondary effect of shortage of amino acids due to incomplete digestion of autophagic cargo, which reduces the efficiency of cone survival over time. Moderate activation of mTORC1, which promotes expression of glycolytic genes, as well as maintains autophagy, provided more sustained cone survival. Together, our work addresses a long-standing question of non-autonomous cone death in RP and presents a novel, mutation-independent approach to extend vision in a disease that remains incurable.
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Evolution of artificial defects during shape rollingFilipovic, Mirjana January 2007 (has links)
Very often defects are present in rolled products. For wire rods, defects are very deleterious since the wire rods are generally used directly in various applications. For this reason, the market nowadays requires wire rods to be completely defect-free. Any wire with defects must be rejected as scrap which is very costly for the production mill. Thus, it is very important to study the formation and evolution of defects during wire rod rolling in order to better understand and minimize the problem, at the same time improving quality of the wire rods and reducing production costs. The present work is focused on the evolution of artificial defects during rolling. Longitudinal surface defects are studied during shape rolling of an AISI M2 high speed steel and a longitudinal central inner defect is studied in an AISI 304L austenitic stainless steel during ultra-high-speed wire rod rolling. Experimental studies are carried out by rolling short rods prepared with arteficial defects. The evolution of the defects is characterised and compared to numerical analyses. The comparison shows that surface defects generally reduce quicker in the experiments than predicted by the simulations whereas a good agreement is generally obtained for the central defect. / QC 20101105
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Analýza užívání pasivních konstrukcí v češtině a švédštině a jejich překladu / Analysis of the passive voice in the Czech and Swedish language and its translationBraná, Marie January 2022 (has links)
We distinguish two types of passive voice in Swedish, namely: s-passive and periphrastic passive, the use of s-pasivum being applied much more frequently. In Czech, periphrastic passive is used as well as reflexive passive, which is traditionally considered as a type of passive voice, although various linguists may not unequivocally agree to classify it as such. Periphrastic passive is rather found in literature and is less frequent while the reflexive passive, being more common, is regarded as neutral passive structure. Swedish fictional literature employs passive voice approximately twice as much as the Czech one. When analyzing the translation options, we distinguish three types of passive structures, since both subtypes of periphrastic passive in Swedish - vara-passive and bli-passive - do differentiate in meaning. The analysis proves that there is a significant tendency to translate passive constructions into active; this is a similarity shared between s-passive and bli-passive.Vara-passive, which, on the contrary, has a rather stative meaning, is translated into verbonominal predicate in most cases. The second most used translation variant of all three types of passive is a periphrastic formulation. This is not a homogenous category, given that it comprises all the translation options that...
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