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Kritérium stability bi-materiálového vrubu se dvěma singularitami
Klusák, Jan
Interfaces with a step change of material properties occur often in technical constructions. In combination with a sharp notch it usually leads to singular stress distribution in a vicinity of such a wedge. The existence of two singularities seems to be the main problem within study of this stress concentrator. The other problem is that each singularity does not correspond to particular mode of loading. The presented contribution studies stress distribution in a bi-material wedge vicinity and shows a method of solution of the problems in case of existence of multiple stress singularity
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Fluid flow analysis in vicinity of exhaust valve using CFD
Šesták, Josef ; Náhlík, Luboš (referee) ; Vrbka, Martin (advisor)
This diploma thesis discuss a flow in a vicinity of exhaust valve using computational of fluid dynamics. In a light of current state of the problem solution this approach is forward but very sophisticated. Intention of author is description of multidimensional boundary of characteristic variables which determinates the flow behaviour for given geometry and boundary conditions. Technical knowlegde of fluid flow in vicinity of exhaust valve allow to design geometry which provide more effective cylinder flush out berofe the exhaust stroke will become. This process reduce quantity of loss work of piston and improve its effective pointers.
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Sediments rich in Al and Fe formed at groundwater of borewells as a specific part of hydrogeochemical cycle at Podluží
Ďurďová, Libuše
The article summarises results of investigation of the precipitates from sediments and sludge at the bottom of the borewells at the wellfield Podluží and its vicinity. The article presents overview of petrography structure of rocks of boreweles VIS from wellfield Podluží, data on groundwater chemistry change in the Morava river watershed (from wellfield Kněžpole are given Kurlovov patterns of water chemistry from years 1960-1985), tables of water chemistry from VIS borewells from y. 1989 and 2002, composition of sediments from VIS borewells, sediments from the Morava river and canals at wellfield Podluží, composition of gely, X-ray analyses of metal precipitates with elemental Al, Si and Fe.
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Czech minority schools in Bílina and vicinity (1918-1938)
Dudová, Miluše ; Kremličková, Marta (referee) ; Váňová, Růžena (advisor)
Diplomová práce se zabývá česko - německými vztahy od dob, kdy se Němci usídlovali na českém území až do roku 1938, kdy došlo k připojení českého pohraničí k německé říši. Popisuje vznik českých škol koncem 19. století na Duchcovsku, které zahrnovalo dva okresy, a to Bílinu a Duchcov. Zabývá se problémy, se kterými se Češi potýkali při zřizování obecných a měšťanských škol pro své děti. Pojednává také o vzniku a fungování Gymnázia v Duchcově a Učitelského ústavu v Bílině. Práce je zaměřena na zřízení a umístění školy, případné stavby nových budov pro tyto školy, na počty tříd a žáků, na akce, které školy pořádaly, na život české menšiny v konkrétní obci a na jejich vztahy s německou většinou. České školy jsou zmapovány od založení do jejich uzavření v roce 1938. K práci bylo využito materiálů uložených ve Státním okresním archivu Teplice.
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Cycling in Prešov and its surroundings
Sýkora, Peter ; Zelený, Lubomír (advisor) ; Compeľová, Adriana (referee)
This work is an overall view of cycling in the Slovak Republic, but especially in Prešov and its vicinity and the potential for future development. Its main objective is to analyze the transport and cycling infrastructure and propose options for the future development of the project implementation of new routes, parking space for bicycles and creating favorable conditions for its development in the city of Prešov.
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Wastewater: plant indicators around mountain chalets – case study "Niklův vrch" and "Rennerovy boudy" (The Krkonoše Mountains National Park, Czech Republic).
Brádlerová, Tereza ; Skalický, Milan (advisor) ; Jan, Jan (referee)
This diploma thesis was solved in Niklův vrch and Rennerovy boudy, areas located in the eastern part of The Krkonoše Mountains National Park.
The main aims of this work were vegetation survey and description of environmental factors by Ellenberg indicator values of meadow areas contaminated by leaked sewage and meadows in their vicinity (referential areas). Another objective of this study was to determine soil pH, acceptable phosphorus and total nitrogen content and heavy metals amount in soil samples. Based on all collected data was proposed future management for each area.
The negative influence of leaking sewage on meadows in Niklův vrch wasn´t confirmed, because of their highly effective cleaning by three-compartment septic tank and biological filter before discharge into surface waters.
Leaked sewage loading was demonstrated in Rennerovy boudy, but only in the area just below the septic tank. The reason of the loading is unsatisfactory condition of the septic tank itself (change to cesspool by blinding discharge and sunken cover). This area was characterized by low species diversity, which is connected with the lowest number of plant species found there (12 species). Based on the habitat of dominant nitrophilous species Urtica dioica and species with nitrophilous tendencies (Alopecurus pratensis, Geranium sylvaticum and Chaerophyllum hirsutum) was determined association Rumicetum alpini Beger 1922 here.
Soil from the area affected by the leaked sewage was characterized by the highest pH/KCl and total nitrogen content and also increased contents of acceptable and total P and K compared to other soil samples.
To suppress this undesirable community Rumicetum alpini Beger 1922 is particularly necessary to improve the process of purifying leaking sewage by replacement the cesspool for household wastewater treatment plant. The distribution of this community also affects the absence of management. Therefore, it seems necessary to renew one-year mowing by scythe of this area.
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