Search for dissertations about: "Samarium"

Showing result 1 - 5 of 12 swedish dissertations containing the word Samarium.

  2. 1. Design, Synthesis, and Evaluation of Functionalized Chroman-4-one and Chromone Derivatives. Somatostatin receptor agonists and Sirt2 inhibitors

    Author : Maria Fridén-Saxin; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chroman-4-ones; Chromones; Inhibitors; Molecular Modeling; Peptidomimetic; Samarium; Sirtuin; Sirt2; Somatostatin; Structure-Activity Relationships; Tubulin; β-Turn;

    Abstract : Peptides are involved in many physiological processes such as regulation of blood-pressure, food intake, pain transmission and blood-glucose levels. They consist of amino acids that are connected through amide bonds which make peptides hydrophilic and conformationally flexible. READ MORE

  4. 2. A study of mixed valence in Sm by XPS and LEED when it is deposited onto Pd(001)

    Author : Dan K. Kristensson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; rare earth metals; XPS; x-ray photoemission; ESCA; intermediate valence; Low energy electron diffraction; mixed valence; Samarium; LEED;

    Abstract : .... READ MORE

  5. 3. Samarium(II)-mediated Reactions in Organic Synthesis - Method Development and Mechanistic Investigation

    Author : Tobias Ankner; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Samarium II iodide; reduction; single electron transfer; nitro group reduction; mechanistic study; bond cleavage; deoxygenation; additives; toluenesulfonyl deprotection; defluorination.;

    Abstract : This thesis describes the development of methods using divalent samarium reagents in organic synthesis. The main focus is placed on functional group reductions, but reductive formation of carbon-carbon bonds has also been investigated. READ MORE

  6. 4. Carboligation using the aldol reaction : A comparison of stereoselectivity and methods

    Author : Derar Al-Smadi; Mikael Widersten; Ulf Nilsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aldol reaction; cinchonine; FSA enzyme; homologation reactions; phenylacetaldehyde derivatives; samarium diiodide.;

    Abstract : The research summarized in this thesis focuses on synthesizing aldehyde and aldol compounds as substrates and products for the enzyme D-fructose-6-aldolase (FSA). Aldolases are important enzymes for the formation of carbon-carbon bonds in nature. READ MORE

  7. 5. Robust Multi-objective Optimization of Rare Earth Element Chromatography

    Author : Hans-Kristian Knutson; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chromatography; Rare earth elements; Modeling; Multi-objective optimization; Robust optimization; Chromatography; Rare earth elements; Modeling; Multi-objective optimization; Robust optimization;

    Abstract : Rare earth elements comprise the metallic elements known as lanthanides as well as scandium and yttrium. They are extensively used in modern technological industries and are considered as strategic commodities in many countries. READ MORE