Determination of the moisture content in wood chips of Scots pine and Norway spruce using Mantex Desktop Scanner based on dual energy X-ray absorptiometry

2012 ◽  
Vol 58 (4) ◽  
pp. 309-314 ◽  
Author(s):  
Mikael Hultnäs ◽  
Victor Fernandez-Cano
Keyword(s):  
Moisture Content ◽  
Norway Spruce ◽  
Scots Pine ◽  
Dual Energy ◽  
Wood Chips ◽  
X Ray

Dual-Energy X-Ray Absorptiometry Analysis for the Determination of Moisture Content in Biomass

2010 ◽  
Vol 4 (4) ◽  
pp. 363-366 ◽  
Author(s):  
R. Kullenberg ◽  
M. Hultnäs ◽  
V. Fernandez ◽  
M. Nylinder ◽  
S. Toft ◽  
...  
Keyword(s):  
Moisture Content ◽  
Dual Energy ◽  
X Ray

scholarly journals Improved method based on dual-energy X-ray absorptiometry for nondestructive evaluation of solid wood moisture content

Holzforschung ◽  
2015 ◽  
Vol 69 (9) ◽  
pp. 1133-1136 ◽  
Author(s):  
Takashi Tanaka
Keyword(s):  
Moisture Content ◽  
Pure Water ◽  
Solid Wood ◽  
Dual Energy ◽  
Wood Moisture ◽  
Strong Negative Correlation ◽  
X Ray ◽  
Wide Range ◽  
Better Than

Abstract An accurate, rapid, and convenient method is presented for moisture content (MC) determination of solid wood based on dual-energy X-ray absorptiometry (DXA). Poly(methyl methacrylate)-equivalent thicknesses (PMMA-EThs) of sugi (Cryptomeria japonica D. Don) wood blocks and pure water were measured by means of a wide range of X-ray tube voltages (20–100 kV). The ratio of the PMMA-ETh of pure water to that of wood decreased as X-ray tube voltage was increased, suggesting that an appropriate pair of tube voltages for DXA is 20 and 100 kV. According to this result, X-ray images of 30 wood samples were taken at 20- and 100-kV tube voltages, and their average PMMA-Eths from both images was determined. There was a strong negative correlation between the wet-basis MC of the wood sample and the ratio of its PMMA-Eth at 100 kV to that at 20 kV. A regression equation was developed for estimating the dry-basis MC of wood samples from their PMMA-ETh ratios. The standard error of estimate was 2.2%, which is better than those determined for electric moisture meters. This approach may lead to the development of a practical, nondestructive moisture meter for wood.

Dual-energy X-ray absorptiometry with digital radiograph for evaluating moisture content of green wood

2015 ◽  
Vol 49 (4) ◽  
pp. 713-723 ◽  
Author(s):  
Chul-Ki Kim ◽  
Jung-Kwon Oh ◽  
Jung-Pyo Hong ◽  
Jun-Jae Lee
Keyword(s):  
Moisture Content ◽  
Dual Energy ◽  
Green Wood ◽  
X Ray ◽  
Digital Radiograph

Determination of body composition—a comparison of dual-energy x-ray absorptiometry and hydrodensitometry

1993 ◽  
Vol 57 (3) ◽  
pp. 323-326 ◽  
Author(s):  
A G Johansson ◽  
A Forslund ◽  
A Sjödin ◽  
H Mallmin ◽  
L Hambraeus ◽  
...  
Keyword(s):  
Body Composition ◽  
Dual Energy ◽  
X Ray
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