Search for dissertations about: "Magic angle spinning NMR"

Showing result 1 - 5 of 20 swedish dissertations containing the words Magic angle spinning NMR.

2. 1. Characterizing Chromatography Media : NMR-based Approaches

   Author : Fredrik Elwinger; István Furó; Stéphane Viel; KTH; []
   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. 2. Structural Investigations of Complex Glasses by Solid-state NMR

   Author : Ekaterina Leonova; Mattias Edén; Robin Harris; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; glass; glass structure and properties; NMR; magic angle spinning; chemical shift; Physical chemistry; 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. 3. Probing Paramagnetic Systems by Solid-State NMR Spectroscopy

   Author : José P. Carvalho; Andrew J. Pell; Sharon Ashbrook; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Solid-state NMR; Magic-Angle Spinning; Paramagnetic NMR; Frequency-Swept Adiabatic Pulses; Quantum Chemistry; Quadrupolar Interaction; Physical Chemistry; fysikalisk kemi;

   Abstract : Paramagnetic systems have a wide range of applications ranging from energy storage or conversion to catalytic processes, metalloproteins and light-emitting materials. Over the recent years nuclear magnetic resonance (NMR) spectroscopy has become an established tool for studying the structural and electronic properties of these systems, largely because it can provide a link between the structure and the bulk properties. READ MORE

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

   Author : Karin Johansson; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; 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

7. 5. New solid-state NMR methods for exciting and separating anisotropic interactions of spin I=1 nuclei

   Author : Rihards Aleksis; Andrew Pell; Robert Schurko; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; solid-state NMR; quadrupolar; paramagnetic shifts; spinning solids; materials; Physical Chemistry; fysikalisk kemi;

   Abstract : Solid-state NMR has become an essential tool for structural characterisation of materials, in particular systems with poor crystallinity and structural disorder. In recent years, a surge of interest has been observed for the study of paramagnetic systems, in which the interaction between nuclei and unpaired electrons allows to probe the electronic structure and properties of materials more directly. READ MORE