Sökning: "natural sources"

Visar resultat 1 - 5 av 1249 avhandlingar innehållade orden natural sources.

  1. 1. Biologically Interesting Compounds from Natural Sources

    Detta är en avhandling från Organic Chemistry, Lund University

    Författare :Veronica de la Parra; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cytotoxicity; Natural products; terpenoids; vasorelaxant activity; allylmercaptane; diabetes mellitus type II; Organisk kemi; Organic chemistry; Cacalia decomposita; GPR40 receptor; TRP channel;

    Sammanfattning : 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. LÄS MER

  2. 2. Road traffic metals sources and emissions

    Detta är en avhandling från Kalmar

    Författare :David Hjortenkrans; Högskolan i Kalmar.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Emission patterns; Heavy metals; Roadside soil; Sweden; Traffic; Sequential extractions; SFA; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi; Miljökemi; Environmental Chemistry;

    Sammanfattning : 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. LÄS MER

  3. 3. Characterization of Secondary Metabolites from Natural Sources

    Detta är en avhandling från Organic Chemistry, Lund University

    Författare :Gilda Erosa; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bourreria pulchra; Heliotropium angiospermum; medicinal plants; Cylindrocarpon; Ripartites metrodii; natural products; Ripartites tricholoma; Sideroxylon foetidissimum.;

    Sammanfattning : 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. LÄS MER

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

    Detta är en avhandling från Organic Chemistry, Lund University

    Författare :Marcelo Bascope; [2006]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  5. 5. Compact Soft X-Ray Microscopy Sources, Optics and Instrumentation

    Detta är en avhandling från Stockholm : KTH

    Författare :Per Takman; KTH.; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; soft x-ray microscopy; water window; compact; laser plasma; liquid jet; zone plate optics; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Sammanfattning : This thesis describes the development of a sub-60-nm full-period resolution compact soft x-ray microscope operating in the water-window region (2.3-4.4 nm). Soft x-ray water-window microscopy is a powerful technique for high-resolution imaging of organic materials exploiting the natural contrast mechanism between carbon and oxygen, cf. LÄS MER