Sökning: "secondary sources"

Visar resultat 1 - 5 av 258 avhandlingar innehållade orden secondary sources.

  1. 1. Secondary Metabolites from Mozambican Plants

    Författare :Julião Monjane; Centrum för analys och syntes; []
    Nyckelord :Secondary metabolites; Mozambique; Medicinal plants; Isolation; Structural elucidation; Antileishmanial activity;

    Sammanfattning : Products derived from different natural sources have been used for thousands of years by human beings for their everyday needs. Out of these natural sources, plants were the most affordable. Plant-derived products were used for shelter, food, and as medicines. LÄS MER

  3. 2. Characterization of Secondary Metabolites from Natural Sources

    Författare :Gilda Erosa; Centrum för analys och syntes; []
    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. 3. Möte med det förflutna : digitaliserade primärkällor i historieundervisningen

    Författare :Karin Sandberg; Lotta Vikström; Thomas Nygren; Ann-Kristin Högman; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; History didactics; digitalized primary sources; historical thinking; historical empathy; contextualization; upper secondary school; didaktik; historieundervisning; digitaliserade primärkällor; historiskt tänkande; historisk empati; kontextualisering; gymnaiset; historia; History; pedagogik; Education;

    Sammanfattning : In recent years, the Swedish educational system has undergone considerable change. A new curriculum and swift digitization via the implementation of the "one-to-one" system have increased the call for new teaching methods in schools. LÄS MER

  5. 4. Meeting the other and oneself : experience and learning in international, upper secondary sojourns

    Författare :Åsa Perez-Karlsson; Karin Sporre; Anna Larsson; Ninni Wahlström; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sojourns; international; Intercultural; experience; Learning; Sweden; Chile; Upper Secondary; pedagogiskt arbete; educational work;

    Sammanfattning : The aim of the study was to investigate into and characterise students’ experiences of learning from their having taken part in an international upper secondary exchange in an intercultural context. Focusing on educational and intercultural dimensions, the thesis contributes knowledge of the implications of increasing internationalization and student mobility in education. LÄS MER

  7. 5. Fluoride in surface water and groundwater in southeast Sweden : sources, controls and risk aspects

    Författare :Tobias Berger; Mats E. Åström; Pasi Peltola; Henrik Drake; Olle Selinus; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fluorine; fluoride; water-rock interaction; granite; crystalline bedrock; surface water; groundwater; Götemar; drinking water quality; aluminium; speciation; fluorosis; PBA; Miljövetenskap; Environmental Science;

    Sammanfattning : The aim of this thesis is to determine the sources, controls and risk aspects of fluoride in surface water and groundwater in a region of southeastern Sweden where the fluorine-rich 1.45 Ga circular Götemar granite (5 km in diameter) crops out in the surrounding 1.8 Ga granites and quartz monzodiorites (TIB rocks). LÄS MER