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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.01 seconds. 
Analysis of primary photosynthetic processes in conifers: A comparison of selected methods and their possible utilisation for the study of genetic variability
 Palovská, Markéta ; Holá, Dana (advisor) ; Albrechtová, Jana (referee)
Conifers are important both ecologically and socioeconomically, however, same parts of their biology are not that well researched. This includes genetics and breeding and partly even physiology. Because quantitative genetic analyzes applied in breeding necessitate an analysis of a large number of samples, and conventional methods of analysis are quite time-consuming, certain parameters describing e.g. the activity of photosynthetic electron-transport chain (ETC) are considered for such use. Several methods of the measurement of the activity of photosynthetic ETC exist, but there are some problems with their usage in conifers. I studied this issue from different points of view in three parts of this thesis. 1) I compared the photosynthetic ETC activity in 8 species of conifers using chlorophyll (Chl) fluorescence measurements on intact needles and polarographic measurements in isolated chloroplasts. Each method brought different information. 2) I measured Chl fluorescence parameters, reflectance spectra and pigment content in 536 genetically defined trees of Pinus sylvestris L. Many parameters showed relatively high genetic variability and heritability. I have also determined the suitability of various reflectance indices to estimate pigment and water content of needles. 3) I have optimized the...
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Měření spektrálních vlastností vnitřního denního osvětlení a úrovně osvětlení v místnostech s ohledem na vizuální a biologickou odezvu člověka
 Hartman, Peter ; Hanuliak, Peter ; Maňková, Lucia ; Fabian, Miroslav ; Hraška, Jozef ; Darula, Stanislav
Slovak standards and regulations for design and evaluation of indoor daylight in residential buildings require average values of the Daylight Factor (D) in two check points as basic criterion. In offices, the daylighting is evaluated in workplaces which can be often situated far from window. In this paper are presented results of daylighting measurements in deeper positions in three model rooms with different internal coloured surfaces which are exposed only to natural daylight during cloudy days. Positions are investigated from point of view of visual and biological response performance, represented by circadian efficiency, which may be significantly influenced by indoor surface’s colour selection.
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
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