Two-dimensional microwave tomographic imaging of low-water-content tissues

2005 ◽  
Vol 46 (6) ◽  
pp. 599-601 ◽  
Author(s):  
G. Bindu ◽  
Vinu Thomas ◽  
Anil Lonappan ◽  
A. V. Praveen Kumar ◽  
V. Hamsakkutty ◽  
...  
Keyword(s):  
Water Content ◽  
Tomographic Imaging ◽  
Two Dimensional ◽  
Microwave Tomographic Imaging

Two-dimensional Microwave Tomographic Imaging of Breast Tissues

2005 ◽  
Vol 2 (1) ◽  
pp. 57-68 ◽  
Author(s):  
G. Bindu ◽  
Santhosh John Abraha . ◽  
Anil Lonappan . ◽  
Vinu Thomas . ◽  
C.K. Aanandan . ◽  
...  
Keyword(s):  
Tomographic Imaging ◽  
Two Dimensional ◽  
Microwave Tomographic Imaging ◽  
Breast Tissues

Microwave Tomographic Imaging of the Heart in Intact Swine

2006 ◽  
Vol 20 (7) ◽  
pp. 873-890 ◽  
Author(s):  
S. Y. Semenov ◽  
V. G. Posukh ◽  
A. E. Bulyshev ◽  
T. C. Williams ◽  
Y. E. Sizov ◽  
...  
Keyword(s):  
Tomographic Imaging ◽  
Microwave Tomographic Imaging

scholarly journals A QUANTITATIVE EVALUATION OF THE WATER DISTRIBUTION IN A SOIL SAMPLE USING NEUTRON IMAGING

2016 ◽  
Vol 56 (5) ◽  
pp. 388-394 ◽  
Author(s):  
Jan Šácha ◽  
Michal Sněhota ◽  
Jan Hovind
Keyword(s):  
Water Content ◽  
Soil Sample ◽  
Neutron Radiography ◽  
Three Dimensional ◽  
Neutron Imaging ◽  
Water Infiltration ◽  
Water Volume ◽  
Two Dimensional ◽  
Total Water ◽  
Beam Hardening

This paper presents an empirical method by Kang et al. recently proposed for correcting two-dimensional neutron radiography for water quantification in soil. The method was tested on data from neutron imaging of the water infiltration in a soil sample. The raw data were affected by neutron scattering and by beam hardening artefacts. Two strategies for identifying the correction parameters are proposed in this paper. The method has been further developed for the case of three-dimensional neutron tomography. In a related experiment, neutron imaging is used to record ponded-infiltration experiments in two artificial soil samples. Radiograms, i.e., two-dimensional projections of the sample, were acquired during infiltration. A calculation was made of the amount of water and its distribution within the radiograms, in the form of two-dimensional water thickness maps. Tomograms were reconstructed from the corrected and uncorrected water thickness maps to obtain the 3D spatial distribution of the water content within the sample. Without the correction, the beam hardening and the scattering effects overestimated the water content values close to the perimeter of the sample, and at the same time underestimated the values close to the centre of the sample. The total water content of the entire sample was the same in both cases. The empirical correction method presented in this study is a relatively accurate, rapid and simple way to obtain the quantitatively determined water content from two-dimensional and three-dimensional neutron images. However, an independent method for measuring the total water volume in the sample is needed in order to identify the correction parameters.

scholarly journals Chemical Imaging by Dissolution Analysis: Localized Kinetics of Dissolution Behavior to Provide Two-Dimensional Chemical Mapping and Tomographic Imaging on a Nanoscale

2017 ◽  
Vol 89 (11) ◽  
pp. 5882-5890 ◽  
Author(s):  
Michael Reading ◽  
Muhammad U. Ghori ◽  
D. Robert Brown ◽  
Leigh T. Fleming ◽  
Milan D. Antonijevic ◽  
...  
Keyword(s):  
Chemical Imaging ◽  
Tomographic Imaging ◽  
Dissolution Behavior ◽  
Two Dimensional ◽  
Chemical Mapping ◽  
Kinetics Of Dissolution ◽  
Kinetics Of

Structure determination of anhydrous acid strontium oxalate by conventional X-ray powder diffraction

2001 ◽  
Vol 16 (4) ◽  
pp. 224-226 ◽  
Author(s):  
G. Vanhoyland ◽  
M. K. Van Bael ◽  
J. Mullens ◽  
L. C. Van Poucke
Keyword(s):  
Thermal Decomposition ◽  
Water Content ◽  
Powder Diffraction ◽  
Structure Determination ◽  
Two Dimensional ◽  
Unit Cell Parameters ◽  
X Ray ◽  
Cell Parameters ◽  
Corrected Data

The anhydrous acid strontium oxalate Sr(HC2O4)⋅½(C2O4) was obtained by thermal decomposition of the hydrated acid strontium oxalate Sr(HC2O4)⋅½(C2O4)⋅H2O. This non-hygroscopic compound crystallizes in the space group P 21/c (No. 14) with unit cell parameters: a=0.796 61(7) nm, b=0.9205(1) nm, c=0.731 98(8) nm, and β=102.104(8)°. Final refinement of the X-ray powder data yielded RB=3.2% and Rwp=11.1% (background-corrected data). In this structure, Sr is eight-fold coordinated by O. These polyhedra are connected together by edge-sharing to form two-dimensional (2D) layers along the bc-plane, which means that there is an increased dimensionality from 1D to 2D with decreasing water content of the acid oxalates.

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