Search for dissertations about: "formic acid"

Showing result 21 - 25 of 40 swedish dissertations containing the words formic acid.

  2. 21. Palladium-Catalyzed Nucleophilic Substitution of Alcohols : Mechanistic Studies and Synthetic Applications

    Author : Supaporn Sawadjoon; Joseph Samec; Takao Ikariya; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; palladium; nucleophilic substitution; mechanism; Organic Chemistry; Organisk kemi;

    Abstract : This thesis deals with the palladium-catalyzed nucleophilic substitution of π-activated alcohols in which the C–O bond of a non-manipulated hydroxyl group is cleaved. The thesis is divided in two chapters describing two different catalytic systems. READ MORE

  4. 22. Chitosan and chitosan/wheat gluten blends : properties of extrudates, solid films and bio-foams

    Author : Fei Chen; Mikael Hedenqvist; Eliane Espuche; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis presents four different studis describing the characteristics and processing opportunities of two widely available biopolymers: chitosan and wheat gluten. The interest in these materials is mainly because they are bio-based and obtained as co- or by-products in the fuel and food sectorIn the first study, high solids content chitosan samples (60 wt. READ MORE

  5. 23. Quantum photoelectrochemistry : Theoretical studies of organic adsorbates on metal oxides surfaces

    Author : Petter Persson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; Quantum chemistry; photoelectrochemistry; metal oxide surfaces; organic adsorbates; Kvantkemi; Quantum chemistry; Kvantkemi; Quantum Chemistry; kvantkemi;

    Abstract : Interactions between organic molecules and transition metal oxide surfaces have been investigated by means of quantum chemical calculations. The studies have been aimed at understanding electrode-adsorbate interactions in photoelectrochemical devices, such as dye-sensitized solar cells. READ MORE

  6. 24. Low Molecular Weight Organic Acids and Their Aluminium Complexes in Forest Soils

    Author : Patrick van Hees; F. C. Ugolini; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The significance of low molecular weight (LMW) organic acids and their aluminium (Al) complexes in soil solutions of podzolized soils was examined. Methods for the analysis of these compounds and complexes were developed, and the impact of these substances on the weathering and podzolization processes was studied. READ MORE

  7. 25. Exploring the gut-brain axis in attention-deficit hyperactivity disorder

    Author : Liu Yang; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : There is a bidirectional interaction between the gut and the brain, termed the gut-brain axis (GBA), involving e.g. the gut microbiota, and connecting the peripheral intestinal elements to the central nervous system (CNS). READ MORE