scholarly journals A Pedophysical Relationship between X-ray Computed Tomography and Electrical Resistivity Data

2020 ◽  
Vol 25 (2) ◽  
pp. 181-187
Author(s):  
Mihai O. Cimpoiaşu ◽  
Oliver Kuras ◽  
Tony Pridmore ◽  
Sacha J. Mooney
Keyword(s):  
Computed Tomography ◽  
Electrical Resistivity ◽  
Moisture Content ◽  
Root Zone ◽  
Resistivity Tomography ◽  
X Ray ◽  
Non Invasive ◽  
Zone Parameters ◽  
X Ray Computed ◽  
X Ray Absorption

Quantitatively linking observations from independent non-invasive soil assessment methods enhances our ability to understand root zone processes. Electrical Resistivity Tomography (ERT) and X-ray Computed Tomography (CT) are two advanced non-invasive technologies routinely employed in soil science. ERT allows 4D process monitoring ( e.g., solute transport) and is sensitive to changes in moisture content (MC) and soil texture. X-ray CT is a higher resolution method used to appraise soil structure. We measured the variation of electrical resistivity and X-ray absorption with gravimetric moisture content (GMC) for two distinct soil types. Experimental results were compared with existing pedophysical relationships that express these dependencies. Based on the good fit between measurements and model predictions, we formulated a new pedophysical relationship that links directly the two soil properties. This will allow a direct translation between ERT and X-ray data for the study of root-zone parameters under well-defined experimental circumstances.

Non-invasive investigation of the cross-sectional solids distribution in CFB risers by X-ray computed tomography

2016 ◽  
Vol 297 ◽  
pp. 247-258 ◽  
Author(s):  
Timo Hensler ◽  
Markus Firsching ◽  
Juan Sebastian Gomez Bonilla ◽  
Thorsten Wörlein ◽  
Norman Uhlmann ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cross Sectional ◽  
X Ray ◽  
Non Invasive ◽  
X Ray Computed ◽  
The Cross

Predicting Density and Moisture Content of Populus xiangchengensis and Phyllostachys edulis using the X-Ray Computed Tomography Technique

2020 ◽  
Vol 70 (2) ◽  
pp. 193-199
Author(s):  
Qingping Wang ◽  
Xing'e Liu ◽  
Shumin Yang
Keyword(s):  
Computed Tomography ◽  
Moisture Content ◽  
Linear Models ◽  
Physical And Mechanical Properties ◽  
Phyllostachys Edulis ◽  
Ct Number ◽  
X Ray ◽  
Ct Technique ◽  
Significant Difference ◽  
X Ray Computed

Abstract Density (D) and moisture content (MC) are two important physical properties of wood and bamboo, which are highly correlated with many other physical and mechanical properties. In this study, the X-ray computed tomography (CT) technique was used to determine the D and MC of poplar (Populus xiangchengensis) and bamboo (Phyllostachys edulis). There was a statistically significant difference in the CT-measured numbers for D and MC between these species. The D-CT and MC-CT linear models for both species were independently established: Dpoplar = 0.00098 × H + 1.02603, Dbamboo = 0.00118 × H + 0.98684, MCpoplar = 0.00309 × H + 1.89982, and MCbamboo = 0.00131 × H + 0.31488, where H is the CT number. The determination coefficients, R2, of the models were all higher than 0.97. Additionally, the R2 values obtained for model validation were also all higher than 0.97. These results indicated that it is feasible to reliably determine D and MC of wood and bamboo using the X-ray CT technique. This study aims to provide reference data for CT detection of the D and MC of wood and bamboo.

scholarly journals Luminescence and X-ray Absorption Properties of Uniform Eu3+:(H3O)Lu3F10 Nanoprobes

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1153 ◽  
Author(s):  
Daniel González-Mancebo ◽  
Ana Isabel Becerro ◽  
Ariadna Corral ◽  
Marcin Balcerzyk ◽  
Manuel Ocaña
Keyword(s):  
Computed Tomography ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Lanthanide Ions ◽  
Absorption Properties ◽  
X Ray ◽  
Water Dispersible ◽  
X Ray Computed ◽  
X Ray Absorption ◽  
Fluoride Nanoparticles

Due to the high atomic number of lutetium and the low phonon energy of the fluoride matrix, Lu-based fluoride nanoparticles doped with active lanthanide ions are potential candidates as bioprobes in both X-ray computed tomography and luminescent imaging. This paper shows a method for the fabrication of uniform, water-dispersible Eu3+:(H3O)Lu3F10 nanoparticles doped with different Eu contents. Their luminescent properties were studied by means of excitation and emission spectra as well as decay curves. The X-ray attenuation capacity of the phosphor showing the highest emission intensity was subsequently analyzed and compared with a commercial contrast agent. The results indicated that the 10% Eu3+-doped (H3O)Lu3F10 nanoparticles fabricated with the proposed polyol-based method are good candidates to be used as dual probes for luminescent imaging and X-ray computed tomography.

scholarly journals Crystal structure, NIR luminescence and X-ray computed tomography of Nd3+:Ba0.3Lu0.7F2.7 nanospheres

2017 ◽  
Vol 46 (20) ◽  
pp. 6580-6587 ◽  
Author(s):  
Daniel González-Mancebo ◽  
Ana Isabel Becerro ◽  
Eugenio Cantelar ◽  
Fernando Cussó ◽  
Arnaud Briat ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Computed Tomography ◽  
X Ray ◽  
X Ray Computed ◽  
X Ray Absorption ◽  
Nir Luminescence

Uniform, hydrophilic Nd3+-doped Ba0.3Lu0.7F2.7 50 nm spheres are obtained in the absence of additives. Their NIR excitation and emission as well as their X-ray absorption make them ideal candidates as bioimaging probes.

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