Search for dissertations about: "stilbenes"

Showing result 1 - 5 of 7 swedish dissertations containing the word stilbenes.

  2. 1. Chemical defence in Norway spruce

    Author : Marie Danielsson; Anna-Karin Borg-Karlson; Anders Backlund; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; volatiles; terpenes; green leaf volatiles; stilbenes; stress response; nepetalactone; Picea abies; Hylobius abietis; Cinara pilicornis; Oligonychus ununguis; Heterobasidion annosum; Chemistry; Kemi;

    Abstract : Norway spruce (Picea abies) responds to stress by biosynthesis of chemical substances, which can deter invading insects or pathogens. Some of these substances are volatile and can be emitted to the surroundings while others are accumulated within the tree. READ MORE

  4. 2. Organic Photochemistry. Scope and Limitations of Twofold Adiabatic Cis-Trans Isomerizations

    Author : Ingjald Anger; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : To investigate the scope and limitations of twofold adiabatic cis/trans photoisomerizations, a number of bis-stilbenes and bisstyryl compounds have been prepared and studied in the excited singlet or triplet states. Their structures vary according to the size of the .pi. READ MORE

  5. 3. Synthesis and application of β-configured [18/19F]FDGs : Novel prosthetic CuAAC click chemistry fluoroglycosylation tools for amyloid PET imaging and cancer theranostics

    Author : Mathias Elgland; Peter Konradsson; Peter Nilsson; Per Hammarström; Olof Solin; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; FDG; clickable; PET; synthesis; in vivo imaging; theranostics;

    Abstract : Positron emission tomography (PET) is a non-invasive imaging method that renders three-dimensional images of tissue that selectively has taken up a radiolabelled organic compound, referred to as a radiotracer. This excellent technique provides clinicians with a tool to monitor disease progression and to evaluate how the patient respond to treatment. READ MORE

  6. 4. Conifer chemical defense : Rugulation of bark beetle colonization and pheromone emission

    Author : Tao Zhao; Anna-Karin Borg-Karlson; Irena Valterova; KTH; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Picea abies; Ips typographus; Ceratocystis polonica; methyl jasmonate; windstorm; stress response; terpenes; phenols; colonization; pheromone emission; Plant and forest protection; Växt- och skogsskydd;

    Abstract : Terpenes and phenols are of importance in conifer defense against insects and pathogens. Knowledge about tree chemical defense is vital for developing practical methods to maintain healthy forests. READ MORE

  7. 5. Theoretical Study of the Electronic Factor in Electron Transfer Reactions

    Author : Manuel Braga; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The electronic factor D is calculated for a number of organic and biological electron transfer systems. Quantum chemical methods at different levels of accuracy are used: ab initio Hartree-Fock, broken-symmetry, and correlation-corrected methods such as multiconfigurational second-order perturbation theory, and also the semiempirical CNDO/S method for very large systems. READ MORE