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Hair quality in gravid versus non-gravid women [Srovnání kvality vlasů u gravidních a negravidních žen /]
Marie Skřontová, Lucie Šimková, Karel Jelen
Language English Country Czech Republic
- Keywords
- relaxační čas, Youngův modul, viskoclastický model vlasů, lidské vlasy,
- MeSH
- Models, Biological MeSH
- Elasticity Imaging Techniques methods utilization MeSH
- Humans MeSH
- Microscopy methods utilization MeSH
- Statistics as Topic MeSH
- Pregnancy physiology metabolism MeSH
- Hair physiology metabolism growth & development MeSH
- Check Tag
- Humans MeSH
- Pregnancy physiology metabolism MeSH
- Female MeSH
The article deals with search for the material parameters that would be suitable for specification of human hair viscoelactic properties. These parameters have simultaneously satisfied an unambiguous differentiation between gravid and non-gravid women. Microscope was used to determine the hair thickness, a pull-test deformation device then to establish both the tearing resistance and relaxation curves, taken as a basis to determine values of Young’s modulus, relaxation time, shear yield point, breaking point, maximum elongation. Taken from the region around occipital condyla, ninety samples of uncolored female hair were placed under measurement. This study has shown that at least the parameters of yield point, diameter, and the second relaxation time are significantly affected by gravidity.
Srovnání kvality vlasů u gravidních a negravidních žen /
Obsahuje 3 tabulky
Bibliography, etc.Literatura
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- $a Skřontová, Marie. $7 _AN068203 $u Department of Anatomy and Biomechanics, Faculty of Physical Education and Sport, Charles University, Prague
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- $a Hair quality in gravid versus non-gravid women / $c Marie Skřontová, Lucie Šimková, Karel Jelen
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- $a Srovnání kvality vlasů u gravidních a negravidních žen /
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- $a Obsahuje 3 tabulky
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- $a The article deals with search for the material parameters that would be suitable for specification of human hair viscoelactic properties. These parameters have simultaneously satisfied an unambiguous differentiation between gravid and non-gravid women. Microscope was used to determine the hair thickness, a pull-test deformation device then to establish both the tearing resistance and relaxation curves, taken as a basis to determine values of Young’s modulus, relaxation time, shear yield point, breaking point, maximum elongation. Taken from the region around occipital condyla, ninety samples of uncolored female hair were placed under measurement. This study has shown that at least the parameters of yield point, diameter, and the second relaxation time are significantly affected by gravidity.
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- $a Šimková, Lucie. $7 _AN068205 $u Department of Anatomy and Biomechanics, Faculty of Physical Education and Sport, Charles University, Prague
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- $a Jelen, Karel $7 jx20071213036 $u Department of Anatomy and Biomechanics, Faculty of Physical Education and Sport, Charles University, Prague
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- $t Acta Universitatis Carolinae. Kinanthropologica $x 1212-1428 $g Roč. 47, č. 2 (2011), s. 117-125 $w MED00150734
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- LZP __
- $a 2012-33/ipal
