Sökning: "structure elucidation"

Visar resultat 21 - 25 av 65 avhandlingar innehållade orden structure elucidation.

  1. 21. Unraveling the structures of complex nanocrystalline materials by combining TEM and XRPD – development and application

    Författare :Magdalena Ola Cichocka; Xiaodong Zou; Joke Hadermann; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Structure determination; 3D electron diffraction; Complex materials; X-ray powder diffraction; Transmission electron microscopy; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Knowledge of the three-dimensional (3D) atomic structure of materials is essential to a fundamental understanding of their properties. The key to understanding the functionality of many materials, particularly those of commercial and industrial interest, is often hidden in the details at the nanoscale. LÄS MER

  3. 22. Formation of Skin Sensitizers from Fragrance Terpenes via Oxidative Activation Routes. Chemical analysis, Structure Elucidation and Experimental Sensitization Studies

    Författare :Lina Hagvall; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The work presented in this thesis emphasizes the importance of considering oxidative activation in the toxicity assessment of fragrance chemicals. Compounds without contact allergenic properties can be activated either via autoxidation in contact with air or via cutaneous metabolism to reactive products which can cause contact allergy. LÄS MER

  4. 23. Synthesis and analysis of carbohydrates related to bacterial polysaccharides

    Författare :Hani Mobarak; Göran Widmalm; Ulf Nilsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbohydrates; synthesis; conformation; NMR; O-antigen; computer-assisted structure elucidation; Organic Chemistry; organisk kemi;

    Sammanfattning : The outer surface of bacteria is composed of around 75% carbohydrates, which are vital for the bacteria to survive and communicate with the host biological system. The thesis discusses different properties of carbohydrates that are essential for understanding the bacterial behavior in biological systems. LÄS MER

  5. 24. Secondary and Higher Order Structural Characterization of Peptides and Proteins by Mass Spectrometry

    Författare :Christopher Adams; Roman Zubarev; Göran Possnert; Carlito Lebrilla; Uppsala universitet; []
    Nyckelord :Engineering physics; Protein Structure; Mass Spectrometry; Electron Capture Dissociation; Tandem Mass Spectrometry; Teknisk fysik;

    Sammanfattning : The work in this thesis has demonstrated the advantages and limitations of using MS based technologies in protein and peptide structural studies. Tandem MS, specifically electron capture dissociation (ECD) have shown the ability to provide structural insights in molecules containing the slightest of all modifications (D-AA substitution). LÄS MER

  7. 25. Method Development in Quantitative and Structural Proteomics using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

    Författare :Charlotte Hagman; Per Håkansson; Jonas Bergquist; Jos Buijs; Michael Przybylski; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; Cerebrospinal Fluid; Electrospray Ionization; Fourier Transform Ion Cyclotron Resonance Mass Spectrometry; Global Markers; High Performance Liquid Chromatography; Gas-Phase Exchange; Hydrogen Deuterium Exchange; Plasma; Protoemics; Quantification; Structural Elucidation; Bioteknik; Bioengineering; Bioteknik;

    Sammanfattning : In this thesis, methods for studying different aspects of proteomics were developed with Fourier Transform Ion Cyclotron Resonance, (FTICR), mass spectrometry. The FTICR technique provides ultra-high mass resolving power, mass accuracy at sub ppm level and sensitivity in the attomole region. LÄS MER