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Environmental impact of construction products containing waste glass
Dibdiaková, Magdaléna ; Mocová, Klára Anna (advisor) ; Innemanová, Petra (referee)
This work deal with the impact of waste glass on the environment, its landfilling, and recycling into new glass or other materials. The effect of various physico-chemical properties of glass on the environment is presented. The use of glass waste in the construction industry is pointed out, specifically as an admixture in concrete, and its effect on the properties of such material. Part of the work is our own research focused on the toxicity of leachates of crushed glass of different colors as well as HPC concrete with an admixture of crushed glass. For this purpose, a test was carried out on the Lemna minor plant, which assessed growth inhibition, total chlorophyll (a,b) and the ratio of total chlorophyll (a,b) to carotenoids. Elemental analysis of glass and HPC concrete samples was also part of the research. Key words: glass, toxicity, concrete, Lemna minor, recycling
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Response of primary photosynthetic processes in C3 and C4 monocotyledonous plants to steroids aplication
Frimlová, Klára ; Rothová, Olga (advisor) ; Mocová, Klára Anna (referee)
Brassinosteroids and ecdysteroid are naturally occuring chemical compounds in plants. The aim of this study was to show whether the application of exogenous steroids such as brassinosteroids (24-epibrassinolide, 28-homobrassinolide, 24-epicastasterone) and ecdysteroid (20-hydroxyecdysone) can affect the morphological parameters and primary photosyntetic processes of selected monocotyledons that was barley, wheat, maize and sorghum. Non-destructive method for measuring of fast kinetics of chlorophyll fluorescence in investigated plants was used. Analysis of primary photosynthetic processes was realized in five time periods from the application of exogenous steroids on the two different old leaves. The response to the treatment by exogenous steroid was different species by plant species. One week after the application of exogenous steroids plants showed differences in their morphological parameters but most of them were not signifficant. The most steroid-sensitive plant was wheat morphological parameters of were significantly different from untreated control plants. No change in maximum quantum yield of photosystem II to the application of exogenous steroid in plants of Sorghum bicolor L. was detected. In the other examined plant species changes in photosynthesis parameters were detected which...
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Response of primary photosynthetic processes in C3 and C4 monocotyledonous plants to steroids aplication
Frimlová, Klára ; Rothová, Olga (advisor) ; Mocová, Klára Anna (referee)
Brassinosteroids and ecdysteroid are naturally occuring chemical compounds in plants. The aim of this study was to show whether the application of exogenous steroids such as brassinosteroids (24-epibrassinolide, 28-homobrassinolide, 24-epicastasterone) and ecdysteroid (20-hydroxyecdysone) can affect the morphological parameters and primary photosyntetic processes of selected monocotyledons that was barley, wheat, maize and sorghum. Non-destructive method for measuring of fast kinetics of chlorophyll fluorescence in investigated plants was used. Analysis of primary photosynthetic processes was realized in five time periods from the application of exogenous steroids on the two different old leaves. The response to the treatment by exogenous steroid was different species by plant species. One week after the application of exogenous steroids plants showed differences in their morphological parameters but most of them were not signifficant. The most steroid-sensitive plant was wheat morphological parameters of were significantly different from untreated control plants. No change in maximum quantum yield of photosystem II to the application of exogenous steroid in plants of Sorghum bicolor L. was detected. In the other examined plant species changes in photosynthesis parameters were detected which...
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