Sökning: "pattern discovery"

Visar resultat 21 - 25 av 66 avhandlingar innehållade orden pattern discovery.

  1. 21. Through the magnifying glass - The big small world of marine meiofauna : Morphology, species and evolution in Nemertodermatida

    Författare :Inga Meyer-Wachsmuth; Ulf Jondelius; Mark E Sidall; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Nemertodermatida; Acoelomorpha; morphology; CLSM; Phalloidin; musculature; DNA; cryptic species; species delimitation; dispersal; taxonomy; phylogenetics; IHC; nervous system; Systematic Zoology; zoologisk systematik och evolutionsforskning;

    Sammanfattning : Nemertodermatida is a group of microscopic marine worm-like animals that live as part of the marine meiofauna in sandy or muddy sediments; one species lives commensally in a holothurian. These benthic worms were thought to disperse passively with ocean currents, resulting in little speciation and thus wide or even cosmopolitan distributions. LÄS MER

  3. 22. Functional Diversification among MADS-Box Genes and the Evolution of Conifer Seed Cone Development

    Författare :Erika Groth; Peter Engström; Karolina Tandre; Tom Gerats; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conifer; seed cone; evo-devo; morphology; plant development; plant evolution; gene family; gene evolution; AGAMOUS; MADS-box; transcription factor; Picea; Cryptomeria; Thujopsis; Juniperus; Biology; Biologi; Biologi med inriktning mot fysiologisk botanik; Biology with specialization in Physiological Botany;

    Sammanfattning : MADS-box genes are important regulators of reproductive development in seed plants, including both flowering plants and conifers. In this thesis the evolution of the AGAMOUS subfamily of MADS-box genes, and what the ancestral function of this group of genes might have been in the early seed plants about 300 million years ago, was addressed by the discovery of two novel conifer genes, both basal to all previously known AGAMOUS subfamily genes. LÄS MER

  4. 23. Synthesis of Indole Alkaloids and Development of New Methodology

    Författare :Anita Hoang; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; total synthesis; indole alkaloids; Domino reactions; vicinal quaternary stereocenters; quaternary stereocenter; indoline synthesis; communesin alkaloid; perophoramidine; dehaloperophoramidine; akuammiline alkaloids; strictamine; intramolecular Heck reaction; domino carbopalladation carbonylation; indoline alkaloids;

    Sammanfattning : This thesis describes our efforts towards the total synthesis of natural products and the development of a newmethodology to afford a synthetically important scaffold.Chapter 2 outlines our efforts towards the total synthesis of a marine natural product, perophoramidine as wellas our completed synthesis of dehaloperophoramidine. LÄS MER

  5. 24. Reciprocal Engagement : A grounded theory of an interactive process of actions to establish, maintain, and develop an enterprise

    Författare :Kristina Lindh; Bengt Gustavsson; David Carson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; reciprocal engagement; convincing manifestation; caring embrace; grounded theory; social interaction; interest creation; relationship developing; entrepreneurial marketing; not-for-profit organizations; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Business studies; Företagsekonomi; företagsekonomi; Business Administration;

    Sammanfattning : Reciprocal engagement is a theory of a basic social process that addresses how an organization establishes, maintains, and develops its enterprise by focusing on strengthening its relationships with other actors. It rests on the rationale that one’s relationships are foremost dependent on how well one manages to engage others. LÄS MER

  7. 25. Synthesis of Nitrogen Heterocycles via 1,3-Dipolar Cycloadditions - Method Development and Applications

    Författare :Johan Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 2D NOESY; alkyne; 3-dipolar cycloaddition; azomethine ylide; 1; CNTs; azide; sequential one-pot; SEM EDS; microwave heating; RuAAC; CuAAC;

    Sammanfattning : Because of the diverse properties displayed by nitrogen heterocycles, they are one of the most commonly used structural elements in drug discovery. Due to this variation in properties, however, the chemistry and synthetic pathway to each heterocycle is unique. LÄS MER