National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
Mathematical models of effects of selected factors on photosnythesis for highschools
Cinibulková, Renata ; Albrechtová, Jana (advisor) ; Tichá, Ingrid (referee)
The goal of this Master thesis was development of teaching materials that are focusing on mastering the fundamentals of mathematical modelling on the examples of photosynthetic processes and influence of selected environmental factors on these processes. Developed models of photosynthetic response to select environmental factors, worksheets, methodical manuals and other supporting materials belong to the teaching materials for secondary schools and serve as a basis of work with models. This teaching materials are aimed to introduce modelling and its significance not only in science but also in education. The present thesis was accomplished on the basis of participation of the Department of Experimental Plant Biology of Faculty of Science of Charles University in Prague in international project NSF within programme GLOBE - The Carbon Cycle. The present thesis is divided into two parts - theoretical part and practical part. The theoretical part includes a literary review and an introduction to the mathematical modelling (in software Stella) that are elaborated considering the teaching purposes and serve as a theoretical background for practical part of present thesis. The chapters that deal with increasing interest in mplementing of modelling in education and with philosophical background of software...
How is the leaf of a higher plant adapted to its photosynthetic function ?
Matušková, Eva ; Nátr, Lubomír (referee) ; Tichá, Ingrid (advisor)
4 Abstract Photosynthesis is a complex of complete biochemical processes which are working in photosynthetic structures, in our case in the leaf of higher plant. Leaf is the main photosynthetic organ of the higher plant which is excellently adapted to its photosynthetic function. Leaf used to be thin (short transport pathways) and used to have a big leaf area which enables to catch as much as possible of incoming irradiance. Light is falling to leaf epidermis. Epidermal cells do not contain chloroplasts and they represent a system of lenses which concentrate the light to the leaf mesophyll so that a light gradient appears. The cells of the palisade parenchyma are columnar and prolongated and the intercellular spaces enable the light going deeper into the leaf mesophyll. On the surface of the palisade parenchyma cells light is scattered and reflected and thus a significant proportion of down-welling light is sent back and will be absorbed for photosynthesis. The cells of spongy parenchyma have a very irregular shape and that amplifies multiple photon scattering. Important substrate for photosynthesis is a quantity of CO2. CO2 is in surrounding atmosphere and enters the leaf mainly through stomata what is the first barrier limiting CO2 flux into the leaf if the stomata are half-open or closed. Further on, CO2...

See also: similar author names
4 TICHÁ, Iveta
5 Tichá, Irena
3 Tichá, Ivana
4 Tichá, Iveta
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