Search for dissertations about: "natural sources"

Showing result 1 - 5 of 1578 swedish dissertations containing the words natural sources.

  2. 1. Biologically Interesting Compounds from Natural Sources

    Author : Veronica de la Parra; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; cytotoxicity; Natural products; terpenoids; vasorelaxant activity; allylmercaptane; diabetes mellitus type II; Organisk kemi; Organic chemistry; Cacalia decomposita; GPR40 receptor; TRP channel;

    Abstract : Natural products have traditionally played a major role in the drug discovery process. Besides constituting extremely popular drugs in the market, and an ever-increasing source of interesting and novel chemical structures, they have also aided the characterization of many a pharmacological target. READ MORE

  4. 2. Characterization of Secondary Metabolites from Natural Sources

    Author : Gilda Erosa; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bourreria pulchra; Heliotropium angiospermum; medicinal plants; Cylindrocarpon; Ripartites metrodii; natural products; Ripartites tricholoma; Sideroxylon foetidissimum.;

    Abstract : Natural products have contributed for many years to the development of new medicines for the treatment of diseases. Their structural diversity and complexity have inspired chemists to produce interesting compounds with pharmaceutical use. READ MORE

  5. 3. Road traffic metals : sources and emissions

    Author : David Hjortenkrans; Bo Bergbäck; Per-Arne Malmqvist; Högskolan i Kalmar; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Emission patterns; Heavy metals; Roadside soil; Sweden; Traffic; Sequential extractions; SFA; Environmental chemistry; Miljökemi; Environmental Chemistry; Miljökemi;

    Abstract : As the environmental regulations and technical progress have forced the factories’ old “end of pipe” solutions to improve, the metal emissions from point sources have decreased. Instead, the diffuse consumption emissions from goods in use now are in focus. READ MORE

  6. 4. Natural products from Bolivian plants and other sources

    Author : Marcelo Bascope; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtbiokemi; Organic chemistry; Organisk kemi; Plant biochemistry; Bolivian plants; ESIMS oxygen adducts; Myrothecium roridum; Silphion persicum; Cyathea boliviana; Rheedia acuminata; Heliconia episcopalis; Iryanthera juruensis; Aniba canelilla; Natural products;

    Abstract : The present research was focused on the phytochemical research of Bolivian plants; a) two medicinal ones Aniba canelilla and Iryanthera juruensis, both plants showed to have compounds with biological activity in different fields. Even though Aniba canelilla was studied before, new compounds were identified in this investigation. READ MORE

  7. 5. Ultra-short-chain perfluoroalkyl acids : Environmental occurrence, sources and distribution

    Author : Maria Björnsdotter; Ingrid Ericson Jogsten; Anna Kärrman; Leo W. Y. Yeung; Tom Harner; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; PFASs; TFA; TFMS; point sources; precursors; solar radiation; atmospheric oxidation; atmospheric deposition; flux; Arctic;

    Abstract : Ultra-short-chain perfluoroalkyl acids (PFAAs) is a group of highly fluorinated and very stable chemicals. Their small molecular structure in combination with the acidic functional group result in highly polar compounds and concern has been raised as these substances may threaten our drinking water supplies. READ MORE