Sökning: "substitution theory"

Visar resultat 1 - 5 av 67 avhandlingar innehållade orden substitution theory.

  1. 1. Gefiolierte blüte kunst : Eine kognitionslinguistisch orientierte Untersuchung zur Metaphorik in Frauenlobs Marienleich

    Författare :Sebastian Cöllen; Bo Andersson; Ludger Lieb; Jens Haustein; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; metaphor; substitution theory; interaction theory; historicity; middle ages; Virgin Mary; theology; cognitive linguistics; Metapher; Substitutionstheorie; Interaktionstheorie; Historizität; Mittelalter; Jungfrau Maria; Theologie; Kognitionslinguistik; Tyska; German;

    Sammanfattning : Heinrich of Meißen, also known as Frauenlob († 1318), is a central figure in Middle High German literature. As is evident from its early reception, his work was highly admired in the middle ages. In research literature, however, his ‘obscure’ poetry initially was faced with a lack of understanding. LÄS MER

  2. 2. Direct Catalytic Nucleophilic Substitution of Non-Derivatized Alcohols

    Författare :Anon Bunrit; Joseph Samec; Joseph Moran; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nucleophilic substitution; catalysis; alcohols; stereospecific; Lewis acid; Brønsted acid base; bifunctional; heterocycles; organisk kemi; Organic Chemistry;

    Sammanfattning : This thesis focuses on the development of methods for the activation of the hydroxyl group in non-derivatized alcohols in substitution reactions. The thesis is divided into two parts, describing three different catalytic systems. LÄS MER

  3. 3. Welfare Relationships : Voluntary organisations and local authorities supporting relatives of older people in Sweden

    Författare :Lena Dahlberg; Rune Premfors; Tommy Möller; Staffan Johansson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; substitution; complementarity; welfare pluralism; voluntary organisation; welfare state; informal care; older people; Sweden; Political science; Statsvetenskap;

    Sammanfattning : Sweden is often described as a country with a strong welfare state and little voluntary work. This is as would be expected according to substitution theory, in which extensive welfare systems are assumed to crowd out voluntary activity and thereby limit the potential for voluntary work – there is an inverse relationship between voluntary and statutory activity. LÄS MER

  4. 4. Density Functional Theory Applied to Materials for Spintronics

    Författare :Diana Mihaela Iusan; Olle Eriksson; Biplab Sanyal; Hiroshi Katayama-Yoshida; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; spintronics; dilute magnetic semiconductors; density functional theory; exchange interactions; magnetic percolation; ordering temperature; disorder; electronic structure; Physics; Fysik; Materialvetenskap; Materials Science;

    Sammanfattning : The properties of dilute magnetic semiconductors have been studied by combined ab initio, Monte Carlo, and experimental techniques. This class of materials could be very important for future spintronic devices, that offer enriched functionality by making use of both the spin and the charge of the electrons. LÄS MER

  5. 5. Quantum Chemical Studies of Chemotherapeutic Drug Cisplatin : Activation and Binding to DNA

    Författare :Johan Raber; David van der Spoel; Paolo Carloni; Uppsala universitet; []
    Nyckelord :Quantum chemistry; cisplatin; quantum chemistry; DNA; density functional theory; activation; JM118; substitution reaction; Platinum; guanine; adenine; cytostatic drug; aquation; anation; activation; Kvantkemi;

    Sammanfattning : The serendipitous discovery of the potent cytotoxic properties of cisplatin brought about a revolution in the treatment of certain types of cancer, but almost fifty years later, there still remain unknown areas in the chemistry of cisplatin. There are questions regarding which form of the drug reaches its DNA target, or why certain DNA sequences are more preferred than others for reaction with cisplatin. LÄS MER