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Use of a region of the visible and near infrared spectrum to predict mechanical properties of wet wood and standing trees
Use of a region of the visible and near infrared spectrum to predict mechanical properties of wet wood and standing trees
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机译:利用可见光和近红外光谱的区域预测湿木和立木的机械性能
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摘要
In a method for determining the dry mechanical strength for a green wood, the improvement comprising: (a) illuminating a surface of the wood to be determined with a reduced range of wavelengths in the VIS-NIR spectra 400 to 1150 nm, said wood having a green moisture content; (b) analyzing the surface of the wood using a spectrometric method, the method generating a first spectral data of a reduced range of wavelengths in VIS-NIR spectra; and (c) using a multivariate analysis technique to predict the mechanical strength of green wood when dry by comparing the first spectral data with a calibration model, the calibration model comprising a second spectrometric method of spectral data of a reduced range of wavelengths in VIS-NIR spectra obtained from a reference wood having a green moisture content, the second spectral being correlated with a known mechanical strength analytical result obtained from the reference wood when dried and having a dry moisture content.
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