Search for dissertations about: "pH titrations"

Showing result 16 - 19 of 19 swedish dissertations containing the words pH titrations.

  2. 16. Charge Development at Iron Oxyhydroxide Surfaces : The Interplay between Surface Structure, Particle Morphology and Counterion Identity

    Author : Philipp A. Kozin; Jean-François Boily; Michael Kersten; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Iron oxyhydroxides; adsorption; mineral-water interface; electrolyte; surface roughness; pores;

    Abstract : Iron (oxyhydr)oxide (FeOOH) minerals play important roles in various natural, technological and societal settings. The widespread abundance of these minerals has prompted numerous studies on their surface reactivity in aqueous media. Surface charge development, one that namely takes place through the adsorption of potential determining ions (p.d. READ MORE

  4. 17. Proton transfer across and along biological membranes

    Author : Johan Berg; Peter Brzezinski; Artur Osyczka; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biological membranes; cardiolipin; cytochrome bo3; cytochrome c oxidase; energy conversion; fluorescence correlation spectroscopy FCS ; localized coupling; mitochondria; proton transfer; Rcf1; respiration; single-enzyme measurement; Biochemistry; biokemi;

    Abstract : Proton-transfer reactions belong to the most prevalent reactions in the biosphere and make life on Earth possible, as they are central to energy conversion. In most known organisms, protons are translocated from one side of a membrane to the other, which generates an electrochemical gradient that drives ATP synthesis. READ MORE

  5. 18. Structural and functional studies on glutaredoxins and members of the thioredoxin superfamily

    Author : Johan Sagemark; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The active site of E.coli glutaredoxin 3 was investigated using a combination of experimental and theoretical techniques. Starting from different conformations, molecular dynamics simulations converged to an active site conformation where the Cys11 thiolate was hydrogen bonded to surrounding amide protons and to the thiol proton of Cys14. READ MORE

  6. 19. Selenium in mammalian thioredoxin reductase

    Author : Liangwei Zhong; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Thioredoxin reductase (TrxR) is a major enzyme in regulating intracellular redox status. The enzyme from several mammalian tissues has been purified, showing higher molecular weight and a much broader substrate specificity than E. coli TrxR, but the structural basis of these properties remained unknown. READ MORE