Analysis of Moisture Distribution in Rice Kernels Using Magnetic Resonance Imaging

2004 ◽  
Author(s):  
Shyh-Shin Hwang ◽  
Ta-Te Lin
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Moisture Distribution ◽  
Resonance Imaging

Monitoring steady state moisture distribution during wick action in mortar by magnetic resonance imaging (MRI)

2017 ◽  
Vol 50 (2) ◽  
Author(s):  
Razieh Enjilela ◽  
Prisciliano F. de J. Cano-Barrita ◽  
Andrew Komar ◽  
Andrew J. Boyd ◽  
Bruce J. Balcom
Keyword(s):  
Magnetic Resonance Imaging ◽  
Steady State ◽  
Magnetic Resonance ◽  
Moisture Distribution ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri

scholarly journals Moisture Distribution during Water Absorption of Ordinary Portland Cement Mortars Obtained with Low-Field Unilateral Magnetic Resonance

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4279
Author(s):  
Prisciliano Felipe de Jesús Cano-Barrita ◽  
Floriberto Díaz-Díaz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Moisture Content ◽  
Portland Cement ◽  
Water Absorption ◽  
Ordinary Portland Cement ◽  
Single Point ◽  
Moisture Distribution ◽  
Resonance Imaging ◽  
Imaging Instrument

Moisture distribution in cement-based materials is important from the durability point of view. In the present study, a portable three-magnet array with an elliptical surface radio frequency coil was used to undertake magnetic resonance measurements of moisture content in ordinary Portland cement mortar and concrete samples. Measurements along the length of the samples during capillary water absorption produced moisture content profiles that were compared with reference profiles acquired using a magnetic resonance imaging instrument. Profiles obtained with the three-magnet array were similar in shape and in penetration depth to those acquired with magnetic resonance imaging. The correlation coefficient between the moisture content measured with both techniques was r2 = 0.97. Similar values of saturated permeability of the mortars with identical w/c ratio were computed with the Hydrus 1D software based on the moisture content profiles. Additionally, inverse Laplace transformation of the signal decays provided the water-filled pore size distribution in saturated and unsaturated regions of the samples. The three-magnet array was successfully used to acquire nuclear magnetic resonance signal from a concrete sample, which was not possible with the magnetic resonance imaging instrument using the single-point imaging technique.

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