Search for dissertations about: "Fotosyntesen"

Showing result 1 - 5 of 53 swedish dissertations containing the word Fotosyntesen.

  2. 1. Phosphorylation in the thylakoid membrane - role of substrate activation

    Author : Martin Vink; Anastasios Melis; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fotosyntesen; Biokemi; biokemi; Biochemistry;

    Abstract : Phosphorylation of specific side chains in target proteins by protein kinases is a major means of regulation of cellular processes. In the thylakoid membrane of higher plants, the redox-controlled phosphorylation of photosystem II (PSII) and light-harvesting complex II (LHCII) proteins regulates energy distribution between the two photosystems and PSII protein dynamics. READ MORE

  4. 2. Collective Excitation Dynamics in Molecular Aggregates

    Author : Mats Dahlbom; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Fysik; Physics; computational methods; photosynthesis; femtosecond spectroscopy; Exciton; Polaron;

    Abstract : The aim of this thesis is to study collective excitation dynamics in molecular aggregates. Half of the work presented here is method development and the remainder is application of these methods to several di.erent molecular aggregates. READ MORE

  5. 3. Modification of flavonoid content and photosynthesis by ultraviolet-B radiation. Atrazine-tolerant and -sensitive ultivars of Brassica napus

    Author : Louise Olsson; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; recovery; quercetin; photosynthesis; photoinhibition; photoacoustics; leaf anatomy; kaempferol; flavonoid; D1 protein; fluorescence; cold stress; carbon dioxide; atrazine tolerance; Brassica napus; UV-B; Physiological biophysics; Växtfysiologi;

    Abstract : Levels of ultraviolet-B (UV-B, 280-320 nm) radiation reaching the Earth´s surface increase due to stratospheric ozone depletion. In this thesis the effect of enhanced UV-B radiation was studied on the atrazine-tolerant mutant Stallion, susceptible to photoinhibition, and the atrazine-sensitive cultivar Paroll of Brassica napus (oilseed rape). READ MORE

  6. 4. Mimicking Photosystem II with Manganese Model Complexes to Approach Artificial Photosynthesis

    Author : Joakim Högblom; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Metabolism; Hydrogen; EPR; Cobalt; Biokemi; metabolism; Biochemistry;

    Abstract : The work in thesis aims for artificial photosyntesis, which could and will mimic natural photosynthesis, the process that uses light to create energy rich compounds from H2O and CO2. Water is oxidized in Photosystem II (PSII) by the Water Oxidizing Complex (WOC), which is a catalytic site on the lumenal side of the thylakoid membrane. READ MORE

  7. 5. The Oxygen Evolving cycle in Photosystem II studied with EPR Spectroscopy at different pH and Temperature

    Author : Susan F Morvaridi; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; Naturvetenskap; Temperature; Natural science; pH; EPR; S cycle; Photosystem II;

    Abstract : PSII catalyses the light-induced water splitting process which leads to electron transfer through the thylakoid membrane and formation of energy rich molecules. Several redox components including a Mn4Ca, an amino acid residueYZ, two special Chl molecules P680, two Pheo and two quinone molecules participate in this process. READ MORE