Wool-fibre Crimp. Part II: Fibre-space Curves

Cortical cell types and intermediate filament arrangements correlate with fiber curvature in Japanese human hair

“…Matrix staining variability and IF arrangements are useful identifiers of cortical cell types (Horio and Kondo, 1953;Rogers, 1959a;Bonés and Sikorski, 1967;Kaplin and Whiteley, 1978;Orwin and Bailey, 1988). Fiber curvature has been hypothesized to result from the interaction between different 3D IF arrangements (inferred from 2D TEM images) and the matrix material following dehydration as the fiber emerges from the follicle (Munro and Carnaby, 1999;Munro, 2001). Electron tomography directly confirmed the different IF arrangements in wool cortical cell types (Bryson et al, 2000;Caldwell et al, 2005a,b), enabling further mathematical modeling and computer assimilations to test hypotheses predicting the effect of IF arrangements on single fiber curvature (Bryson et al, 2001;Bryson, 2002, 2005).…”

Objective Measurement of Wool Fibre Fineness Using 2-D Gabor Filter

“…These visual characteristics, which are used in current practice, are defined as crimp, curvature or style. Over the years in the past, many research groups have examined these properties of individual fibres and tried to find relationship between those properties and fibres' fineness (Fish, 2002;Fish et al, 1999;Madeley & Postle, 1999;Mcgregor, 2003;Munro, 2001;Smuts et al, 2001;Swan & Mahar, 2000). For instance, it was found that a wool fibre with a finer diameter will have a smaller crimp and will have more of them per unit fibre length; when the sheep is well breed, the wool fibres produced have very-defined and evenly spaced crimps, which are also called good style.…”