Search for dissertations about: "Naturvetenskap Kemi Analytisk kemi"

Showing result 1 - 5 of 539 swedish dissertations containing the words Naturvetenskap Kemi Analytisk kemi.

  2. 1. Green Aromatics: Catalytic Valorisation of bio-derived 2,5-dimethylfuran over Zeolites and Zeotypes

    Author : Christopher Sauer; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biomass conversion; infrared spectroscopy; BTX Aromatics; 2; 5-dimethylfuran; Zeolite; Catalysis; Online Analysis; Zeotype;

    Abstract : This thesis discusses the use of biomass as a potentially green feedstock for the chemical industry in the urgent shift away from fossil resources. I elaborate on reasons why we cannot afford to burn virgin biomass for energy production, among them a variety of ecosystem services that forests and other lands provide. READ MORE

  4. 2. Effects of methyl jasmonate on chemical defenses of conifer seedlings in relation to feeding by Hylobius abietis

    Author : Lina Lundborg; Anna-Karin Borg-Karlson; Irena Valterová; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Pinaceae; Pinus pinaster; Pinus radiata; Pinus sylvestris; Picea abies; Thaumetopoea pityocampa; Hylobius abietis; Needles; Phloem; Feeding; Vaccination; Priming; Methyl jasmonate; Aromatics; Phenolics; Monoterpenes; Pinaceae; Pinus pinaster; Pinus radiata; Pinus sylvestris; Picea abies; Thaumetopoea pityocampa; Hylobius abietis; Barr; Floem; Ätning; Vaccinering; Metyljasmonat; Aromater; Fenoler; Monoterpener; Kemi; Chemistry;

    Abstract : The chemical elicitor methyl jasmonate (MeJA) could replace insecticides in Europe and Asia for protection of young conifers against the pine weevil (Hylobius abietis). This thesis mainly focuses on the effects of MeJA treatment on chemical defenses of conifers from seedling batches with documented field resistance. READ MORE

  5. 3. Development of Polyamide Solvent Extraction Reagents for Trivalent Lanthanides

    Author : Mikhail S Tyumentsev; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Polyamides; Solvent Extraction; Europium; Rare Earth Elements; Lanthanides; Malonamides;

    Abstract : Rare earth elements (REEs), including lanthanides, are critical materials for many industrial technologies. As a result recycling of end-of-life products containing REEs might be beneficial, as this could partially satisfy the growing demands of industry for these elements. READ MORE

  6. 4. Development of advanced chemical biology tools for microbiome metabolism : Chemoselective probes for enhanced metabolomics analysis

    Author : Weifeng Lin; Daniel Globisch; Frank Schroeder; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chemical biology; Chemoselective modification; Chemical metabolomics; Bioorganic; Microbiome metabolism; Kemi; Chemistry;

    Abstract : The human microbiome has a profound impact on host physiology by generating highly reactive compounds that can contribute to the development of diseases. These microbial metabolites have a substantial potential that can serve as valuable indicators or biomarkers for different health conditions. READ MORE

  7. 5. Adsorption Studies with Liquid Chromatography : Experimental Preparations for Thorough Determination of Adsorption Data

    Author : Lena Edström; Jonas Bergquist; Lars Hagel; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Liquid chromatography; HPLC; UHPLC; Reversed phase; Preparative chromatography; Adsorption isotherm; Injection profile; Sample pH; pH stable conditions; Peak deformation; Band distortion; Overloaded band; Chiral preparative chromatography; Analytical Chemistry; Analytisk kemi;

    Abstract : Analytical chemistry is a field with a vast variety of applications. A robust companion in the field is liquid chromatography, the method used in this thesis, which is an established workhorse and a versatile tool in many different disciplines. READ MORE