Sökning: "RELAXATION"

Visar resultat 16 - 20 av 913 avhandlingar innehållade ordet RELAXATION.

  1. 16. Molecular dynamics simulations of intermolecular mechanisms in nuclear spin relaxation

    Författare :Michael Odelius; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Atomfysik; Molekylfysik; Fysikalisk kemi;

    Sammanfattning : .... LÄS MER

  3. 17. Dynamics of Disordered Materials in Confined Geometries

    Författare :Christer Svanberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer film; glass transition; confinement; polymer gel; dynamics; dielectric spectroscopy; gel electrolytes; relaxation; photon correlation; cooperativity;

    Sammanfattning : This thesis is concerned with effects of geometrical confinement on dynamics in disordered materials in the nanoscopic range. Of particular interest is the dynamics around the liquid to glass transition. Two systems have been investigated: thin polymer films and polymer gels. LÄS MER

  4. 18. Dielectric Relaxation in Dielectric Mixtures

    Författare :Enis Tuncer; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In this thesis dielectric properties of both ideal composite structures and polymeric composite materials were investigated. Numerical calculations were performed to simulate frequency response of interfacial polarization using the finite element method in two dimensions. LÄS MER

  5. 19. Analysis of NMR Spin-lattice Relaxation Dispersion on Complex Systems

    Författare :Yang Huang; Per-Olof Westlund; Arnold Maliniak; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NMRD; relaxation theory; hydration; MD; FFC; PrxV; OEC complex; ZSM-5; BMIM [PF6; ]; fysikalisk kemi; Physical Chemistry;

    Sammanfattning : This thesis focus on the analysis of spin-lattice NMRD relaxation profilesmeasured in various complex systems such as proteins, zeolites and ionicliquids. Proton, deuterium and fluoride T1-NMRD relaxation profiles wereobtained from a fast-field cycling (FFC) instrument. LÄS MER

  7. 20. Corrosion testing of heat exchanger tubing

    Författare :Ulf Kivisäkk; KTH; []
    Nyckelord :corrosion testing; heat exchanger; stainless steels; general corrosion; immersion testing; activation; stress corrosion cracking; constant load; u-bends; relaxation; dewpoint corrosion;

    Sammanfattning : Heat exchanger tubes are commonly made from stainless steel.In a heat exchanger both the process fluid and the cooling orheating media can be corrosive. It is therefore important to beable to select materials that do not suffer from corrosion.Current methods in this area, however, suffer from limitationsand shortcomings. LÄS MER