Sökning: "NMR"

Visar resultat 1 - 5 av 559 avhandlingar innehållade ordet NMR.

  1. 1. Nuclear Magnetic Relaxation in Micellar Solution and Lyotropic Liquid Crystals. Tools and Applications

    Detta är en avhandling från Stockholm : Kemi

    Författare :Ruslan Sitnikov; KTH.; [2000]
    Nyckelord :NMR; NMR relaxation dispersion; NMR spectrometer; low NMR frequencies; NMR duplexer; NMR preamplifier; NMR lock; surfactant systems; micellar solutions; lyotropic liquid crystals; cubic mesophase;

    Sammanfattning : Structurally, this Thesis is divided into two parts thatdescribe (i) the hardware development for NMR relaxationstudies and (ii) its applications for studies of the surfactantsystems.The developed hardware solutions allow to expand thefrequency range covered by conventional NMR spectrometers tomake NMR experiments feasible at resonance frequencies down to100 kHz. LÄS MER

  2. 2. NMR Studies of Colloidal Systems in and out of Equilibrium

    Detta är en avhandling från Stockholm : KTH

    Författare :Pavel V. Yushmanov; KTH.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stopped-flow NMR; temperature-jump NMR; crossrelaxation; NMR; NMR probe; fluorosurfactant; micellar kinetics; micellar structure; NATURAL SCIENCES Chemistry Physical chemistry; NATURVETENSKAP Kemi Fysikalisk kemi;

    Sammanfattning : The Thesis describes (i) the development of add-on instrumentation extending the capabilities of conventional NMR spectrometers and (ii) the application of the designed equipments and techniques for investigating various colloidal systems. The new equipments are:Novel designs of stopped-flow and temperature–jump inserts intended for conventional Bruker wide-bore superconductive magnets. LÄS MER

  3. 3. NMR Diffusometry and Dynamic NMR Microscopy Studies of Colloidal Systems

    Detta är en avhandling från Chalmers University of Technology

    Författare :Helena Wassenius; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; NMR diffusometry; dynamic NMR microscopy; colloidal systems; diffusion behaviour; core-shell latex particles; NMR velocimetry; rheology;

    Sammanfattning : .... LÄS MER

  4. 4. Physico-Chemical Properties of Plant Polysaccharides Investigated with NMR Techniques

    Detta är en avhandling från Chalmers University of Technology

    Författare :Åsa Östlund; Chalmers tekniska högskola.; Chalmers University of Technology.; Chalmers tekniska högskola.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spektroskopi; Spectroscopy; Yt- och kolloidkemi; Surface and colloid chemistry; Cellulose solution; Chemical shift imaging; Cryoporometry; Dissolution of cellulose; Fiber hornification; 19F NMR; Gelation of cellulose; 1H NMR; Molecular weight; NMR diffusometry; Pore size distribution; Pulsed field gradient NMR; Self-diffusion; TBAF DMSO; Xylan;

    Sammanfattning : .... LÄS MER

  5. 5. Characterizing ions in solution by NMR methods

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Marianne Giesecke; KTH.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electrophoretic NMR; diffusion NMR; NMR imaging; ion pairing; ion association; polyethylene oxide; metal-ion complex; Li ion batteries; electrolyte characterization; Kemi; Chemistry;

    Sammanfattning : NMR experiments performed under the effect of electric fields, either continuous or pulsed, can provide quantitative parameters related to ion association and ion transport in solution.  Electrophoretic NMR (eNMR) is based on a diffusion pulse-sequence with electric fields applied in the form of pulses. LÄS MER