NMR Flow Imaging

Nuclear Magnetic Resonance Imaging of Li-ion Battery

“…If the TR parameter is long compared with relaxation time T 1 , all nuclear magnetization recover to be equilibrium condition by next acquisition. It means T 1 reduction effect vanishes if you select long TR value, NMR image would show uniform intensity [3]. Figure 4 shows NMR images taken by various TR values.…”

“…TE is an echo time of 90 -180 degree pulse sequence. An analogy of variable TR measurement, it detects difference of T 2 in each part [3]. In Fig.…”

“…This cathode material is known as paramagnetic material [2]. Magnetizations induced by external high magnetic field (9.4 T) add extra magnetic field to linear gradient field [3,4], leading to distortion of spatial correspondences. This effect causes intensity enhancement.…”

Application de la resonance magnetique nucleaire aux ecoulements diphasiques

“…Cette étape importante a permis d'envisager de nouvelles études sur les écoulements. Il est maintenant possible d'obtenir le profil des vitesses dans une section de canalisation [15]. Plusieurs revues sur l'utilisation de la RMN dans la caractérisation des écoulements ont déjà été publiées [16][17][18][19][20].…”

NMR imaging and hydrodynamic analysis of neutrally buoyant non-Newtonian slurry flows

“…Unfortunately, the hydrodynamics of such flow processes is poorly understood and is difficult to assess because it requires the simultaneous measurements of Due to the recent development in pulsed Fourier Transform NMR imaging, NMR imaging is now becoming a powerful technique for the non intrusive investigation of multi-phase flows. Kose et al [7] originally introduced two-dimensional NMR flow imaging techniques which result in both velocity profiles and flow compensated liquid volume fraction distributions. Later, Majors et al [l] used this technique to measure slurry flows of up to 2 m /sec.…”