Search for dissertations about: "RADICALS"

Showing result 1 - 5 of 262 swedish dissertations containing the word RADICALS.

  2. 1. Using de novo design proteins to explore tyrosine radicals and cation-π interactions

    Author : Bruce W. Berry; Cecilia Tommos; Anders Hofer; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tyrosine; radicals; cation-pi interactions; de novo designed proteins; biochemistry; biophysics; Biochemistry; biokemi;

    Abstract : Redox cofactors and amino-acid free radicals play important roles in biology. Although many of the same cofactors and amino acids that form these radicals are found across a broad range of biological systems, identical cofactors can have different reduction potentials. The local environment plays a role in defining these redox potentials. READ MORE

  4. 2. Limonene Hydroperoxides in Allergic Contact Dermatitis. Radical Formation, Sensitizing Capacity and Immunogenic Complex Formation

    Author : Staffan Johansson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; allergic contact dermatitis; contact allergy; immunogenic complex; limonene hydroperoxides; local lymph node assay; patch testing; radicals; sensitizing capacity; skin;

    Abstract : Contact allergy to fragrance compounds is an increasing problem in the western countries today. R-Limonene is one of the most common fragrance compounds; it is used in hygiene products and cosmetics as well as in industrial products such as hand cleansers and degreasers. READ MORE

  5. 3. Application of Laser Techniques for Combustion Studies

    Author : Marcus Aldén; Fysiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Keywords: Laser-induced fluorescence; Raman Spectroscopy; Coherent anti-Stokes Raman Scattering CARS ; flames; laserspectroscopy; dye laser; lidar; remote sensing; combustion; air pollution; radicals; optical multichannel analyzer.; Fysicumarkivet A:1983:Aldén;

    Abstract : The aim for this work has been to increase the applicability of laser spectroscopy techniques for studies of combustion processes, both what regards in-flame experiments, exhaust-gas analysis and remote sensing of the atmosphere. Raman spectroscopy has been used for analysis of exhaust gases from flames, model fires of wood and for inflame measurements. READ MORE

  6. 4. C–H and Si–H functionalization using redox-active diazo compounds and decarboxylative coupling

    Author : Rajdip Chowdhury; Abraham Mendoza; Darren Dixon; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; carbenes; radicals; redox-active esters; indoles; carboxylic acids; silanes; photochemistry; Organic Chemistry; organisk kemi;

    Abstract : The work presented in this thesis is based on two basic organic chemistry concepts: carbene catalysis and radical coupling reactions. Diazo compounds in the presence of transition-metal catalysts are known to be excellent reagents for the construction of C–X bonds (X = C, Si, N, O, etc.) under mild conditions. READ MORE

  7. 5. Hydrogen Bonded Phenols as Models for Redox-Active Tyrosines in Enzymes

    Author : Josefin Utas; Björn Åkermark; Helena Grennberg; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; electron transfer; photosystem II; radicals; imidazole; hydrogen bonding; Organic chemistry; Organisk kemi;

    Abstract : This thesis deals with the impact of hydrogen bonding on the properties of phenols. The possibility for tyrosine to form hydrogen bonds to other amino acids has been found to be important for its function as an electron transfer mediator in a number of important redox enzymes. READ MORE