Search for dissertations about: "low molecular weight"

Showing result 6 - 10 of 364 swedish dissertations containing the words low molecular weight.

  2. 6. Non-invasive monitoring of low molecular weight biomarkers relevant to skin inflammation and cancer

    Author : Skaidre Jankovskaja; Tautgirdas Ruzgas; Johan Engblom; György Marko-Varga; Melinda Rezeli; Pawel Lukasz Urban; Malmö universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Tryptophan; Kynurenine; Phenylalanine; Tyrosine; Low molecular Weight Biomarkers; Non-Invasive; Skin Surface Sampling; Skin Permeability; Hydrogels; Prussian White; Health and society; Hälsa och samhälle;

    Abstract : Development of skin inflammation and cancer in viable epidermis and dermis involve slow molecular weight (LMW) metabolites. We hypothesize that these LMW compounds can be collected on the surface of the skin and used for non-invasive diagnostics of skin disorders. READ MORE

  4. 7. Chiral Separation of Amines by Non-Aqueous Capillary Electrophoresis using Low Molecular Weight Selectors

    Author : Ylva Hedeland; Curt Pettersson; Ulf Bondesson; Lars Blomberg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Pharmaceutical chemistry; Chiral Separation; Non-Aqueous Capillary Electrophoresis; Enantioresolution; Electro-osmotic Flow; Pharmaceuticals; Enantiomeric Amines; Low Molecular Weight Selector; Farmaceutisk kemi; Kemi med inriktning mot analytisk kemi; Chemistry with specialization in Analytical Chemistry; Analytical Pharmaceutical Chemistry; Analytisk farmaceutisk kemi;

    Abstract : Three chiral selectors (diketogulonic acid, benzoxycarbonylglycylproline and ketopinic acid) have been introduced for enantioseparation of pharmacologically active amines in non-aqueous capillary electrophoresis. The use of organic solvents, instead of aqueous buffers in the background electrolyte facilitated ion-pair formation between the analytes and the chiral selectors. READ MORE

  5. 8. Synthesis and transformation of some low molecular weight carbohydrates

    Author : Björn Classon; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : A one-step transformation of hydroxyl groups in carbohydrates to bromo groups is presented.The usefulness of ρ-methoxybenzyl as a protecting group of the anomeric center is examined. Reductive elimination by treatment of acetylated deoxyhalo sugar derivatives using zinc powder in ethanol containing acetic acid to give unsaturation is described. READ MORE

  6. 9. Structural studies of two bacterial polysaccharide antigens : synthesis and chemical modification of low molecular weight carbohydrates

    Author : Carmen Ortega; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The structures of two bacterial antigens, one a capsular polysaccharide from Klebsiella K66 and the other a lipopolysaccharide from Escherichia coli 0:6, have been determined, using specific degradations and spectrochemical studies. Two glycosidation methods are described. READ MORE

  7. 10. Capillary zone electrophoresis for the analysis of low molecular weight organic acids in environmental systems

    Author : Jessika Hagberg; Bert Allard; Stefan Karlsson; Anders Düker; Patrick van Hees; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; capillary zone electrophoresis; capillary zone electrophoresis-electrospray ionization-mass spectrometry; low molecular weight organic acids; pKa; Chemistry; Kemi; Kemi; Chemistry;

    Abstract : Capillary zone electrophoretic (CZE) methods were developed to identify and quantify low molecular weight (LMW) organic acids in environmental samples. Sensitivity and selectivity were optimised by adapting the background electrolyte to the characteristics of analytes, and by using different modes of detection and injection. READ MORE