Search for dissertations about: "magic-angle spinning"

Showing result 1 - 5 of 15 swedish dissertations containing the words magic-angle spinning.

  1. 1. Dipolar recoupling in magic-angle-spinning nuclear magnetic resonance

    University dissertation from Stockholm : Stockholm University

    Author : Andreas Brinkmann; Stockholms universitet.; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; fysikalisk kemi;

    Abstract : This thesis concerns the development of radio-frequency pulse sequences in magic-angle-spinning solid-state nuclear magnetic resonance.First, two classes of pulse sequences are presented which are synchronized with the sample rotation. READ MORE

  2. 2. Solid state 29Si and 27Al magic angle spinning NMR studies of mechanochemically modified cement

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Karin Johansson; [2001]
    Keywords : Chemistry of Interfaces; Gränsytors kemi;

    Abstract : Solid state 29Si and 27Al magic angle spinning (MAS) NMR spectroscopy has been used to investigate how mechanochemical modification affects the hydration kinetics, as well as the structural and chemical properties, in cement blends. The modification comprises intensive treatment of rapid hardening Portland cement with condensed silica fume additive in a vibrating grinding mill. READ MORE

  3. 3. Characterizing Chromatography Media NMR-based Approaches

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Fredrik Elwinger; KTH.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; chromatography; nuclear magnetic resonance; NMR; self-diffusion; magic-angle spinning; quantitative; distribution coefficient; pore size; Kemi; Chemistry;

    Abstract : Liquid chromatography is an essential technique in manufacturing biopharmaceuticals where it is used on all scales from analytical applications in R&D to full-scale production. In chromatography the target molecule, typically a protein, is separated and purified from other components and contaminants. READ MORE

  4. 4. Structural Investigations of Complex Glasses by Solid-state NMR

    University dissertation from Stockholm : Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi

    Author : Ekaterina Leonova; Stockholms universitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; glass; glass structure and properties; NMR; magic angle spinning; chemical shift; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Abstract : This PhD thesis presents structural investigations of amorphous inorganic materials: oxide and oxynitride glasses and mesoporous bioactive glasses (MBGs), by solid-state Nuclear Magnetic Resonance (NMR).Lanthanum oxide and oxynitride [La-Si-(Al)-O-(N)] glasses have a large number of potential applications due to their physical properties. READ MORE

  5. 5. Rotational Resonance in the Nuclear Magnetic Resonance of solids

    University dissertation from Stockholm : Stockholm University

    Author : Torgny Karlsson; Stockholms universitet.; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; fysikalisk kemi;

    Abstract : This thesis presents new physical phenomena in the rotational resonance NMR of magic-angle spinning solids. The theory of a new class of nuclear spin echoes is developed. READ MORE