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Overhead Line Protection against Climatic Effects
Sýkora, Martin ; Topolánek, David (referee) ; Orságová, Jaroslava (advisor)
The outdoor overhead lines are influenced by additional load pressure of wind and frost. These can have adverse reaction on outdoor conduction of the electric power. My bachelors' report deals with separate climatic effects and possibilities of their resolution. It it also concentrates on removing the negative influences caused particularly by wind and on the possibilities of liquidation of the frost that had already originated.
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Project of Overhead Line
Chrástek, Radim ; Těžký, Jiří (referee) ; Orságová, Jaroslava (advisor)
Overhead line has to suit a series of requests, so that all its parts safely resist mechanical and electrical tension. This bachelor’s thesis deals with mechanical tension. At first, necessary overhead line’s relationships under different climatic conditions are deduced. Consequently, practical calculations are introduced. Calculations are done with Matlab program.
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A survey of the mortuary in Ostrovec at Velečín
Slížková, Zuzana ; Frankeová, Dita ; Petráňová, Veronika ; Zeman, Antonín ; Hauková, Petra ; Mácová, Petra ; Niedoba, Krzysztof ; Viani, Alberto ; Pérez-Estébanez, Marta ; Zíma, Pavel ; Janotová, Dana
This report presents the results of a survey of the mortuary object in Ostrovec by Velečín which has been selected for testing the samples of plaster developed in the project MK NAKI DF11P01OVV008 (High-performance and compatible lime mortars for extreme application in restoration, repair and preventive maintenance of architectural heritage). The survey focuses on the plinth of the morgue, where the plaster repeatedly freezes and falls off after one winter season. Causes of failure of the repairs plasters and material composition of were examined by following techniques:x-ray diffraction (XRD), thermal analysis (TG), optic and electron microscopy, FTIR and Raman spectroscopy.
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Comparison of drought and frost resistence of selected varieties of \kur{Medicago sativa} L. from domestic and foreign breeding
HLAVÁČKOVÁ, Petra
The aim was comparison of drought and frost resistence of selected varieties of Medicago sativa L. from domestic and foreign. The evaluation was performed by a series of laboratory experiments and observations in two replications in 2009 ? 2010. The results were evaluated as the most resistant varieties to frost variety from the Czech Republic and Slovakia. Namely variety Magda Litava, Tisa and Synthesis. As the least resistant varieties have been evaluated varieties from the warm coastal areas. Most resistant varieties to water deficit during vegetation varieties were evaluated Magda, Comete, Europe and Camilla. The climatic conditions of the Czech Republic would be most appropriate, according to the results observed varieties of Magda. It has high resistance to frost and has good results in drought. Other good varieties from Czech Republic are Pálava and Camilla. Of the foreign varieties would be best to use a French variety of Como, Europe and the Dutch variety of Capri. These varieties have good resistance to frost and high drought. The whole problem of drought and frost resistance of alfalfa is not yet explored, it would be appropriate, the results obtained confirmed by further research.
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