Sökning: "Transformations"

Visar resultat 11 - 15 av 720 avhandlingar innehållade ordet Transformations.

  1. 11. Development of organocatalytic asymmetric transformations

    Författare :Ismail Ibrahem; Armando Cordova; Stephen Hanessian; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Asymmetric Catalysis; α-amino acids; Aldehydes; Ketones; α-Aminomethylation; Aziridination; Hydrophosphination; Diarylprolinol; Proline derivatives; Organic synthesis; Organisk syntes; Organic Chemistry; organisk kemi;

    Sammanfattning : The ability of amino acids and amino acid derivatives to mediate various organocatalytic asymmetric transformations has been investigated and applied in the development of various reactions. This work describes the development of a direct catalytic asymmetric α-aminomethylation of ketones and aldehydes, a catalytic asymmetric aziridination, hydrophosphination and amination of α,β-unsaturated aldehydes. LÄS MER

  3. 12. Structure studies of some ternary copper chalcogenides

    Författare :Lasse Norén; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Ternary copper chalcogenides; Structures; Phase transitions; Disorder; Transformations; Kemi; Chemistry; Kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Copper has in its heavier chalcogenides often a high mobility in the solid state. This behaviour has also be found for some ternary compounds where copper appears to govern the observed phase transitions and structural transformations. LÄS MER

  4. 13. The Transformative Imagination : Re-imagining the world towards sustainability

    Författare :Diego Galafassi; Victor Galaz; Tim Daw; Karen O'Brien; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ways of knowing; transformations; complexity; futures; practice; transdisciplinarity; creativity; art-based; embodied meaning; action-research; science-policy; Sustainability Science; vetenskap om hållbar utveckling;

    Sammanfattning : A central task for sustainability science in the Anthropocene is to offer guidance on alternative pathways of change. Even though this search and implementation of pathways towards sustainability is likely to require profound social-ecological transformations, little is yet known about the individual and collective capacities needed to support such transformations. LÄS MER

  5. 14. Transformational knowledge practices in social-ecological systems

    Författare :Diego Galafassi; Victor Galaz; David Tàbara; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transformations; knowledge coproduction; participatory processes; creativity; art-science; scenarios;

    Sammanfattning : Climate change and poverty alleviation are examples of interconnected challenges propelling changes across environmental, social, cultural and political spheres. Interconnected challenges are characterized by multiple causality, feedback loops, non-linear dynamics. LÄS MER

  7. 15. Transformations towards Sustainable Food Systems : Pathways, Governance, and Actors in a Swedish and European Union Context

    Författare :Karin Eliasson; Tina-Simone Neset; Victoria Wibeck; Suvi Huttunen; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; The European Green Deal; Food policy; Focus groups; Food systems; Biodiversity; Accountability; Agency; Phosphorus; Soybean; Footprinting; Den europeiska gröna given; Livsmedelspolitik; Fokusgrupper; Livsmedelssystem; Biodiversitet; Ansvarsskyldighet; Handlingsutrymme; Fosfor; Sojabönor; Fotavtryck;

    Sammanfattning : Food systems are central to global sustainability, while being complex systems where places and people are intertwined over large distances and at different scales. Transformations towards sustainable food systems have been called for in both research and policy, and Sweden and the European Union have declared high ambitions to act as global leaders in these transformations. LÄS MER