| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a noninvasive and quantitative evaluation method for an unknown hair, capable of evaluating what kind of chemical substance damaged the hair, how much it is damaged, and/or its damage possibility. <P>SOLUTION: Infrared light absorption spectrums of more than two kinds of hairs, different in amount or degree of damage are measured. An index derived by statistically processing the spectrum data and an index derived from the unknown hair sample are compared to evaluate the hair's damage history or damage possibility. It is preferable that algorithm in the statistical processing is mainly principal component analysis (PCA), SIMCA, or KNN method, and the hair's damage possibility in the future is determined. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
