Results 271 to 280 of about 1,871,893 (327)

Photoageing of Hair Fiber and Photoprotection

Skin Pharmacology and Physiology, 1994
Examination by transmission electron microscopy of hair exposed to sunlight has revealed important damage. Findings indicate an alteration of various cell components. Damage occurs in the cuticle and leads to its loss. Separation of macro-fibrils and destruction of melanin pigments result in cortex damage.
D, Braida, C, Dubief, G, Lang
openaire   +2 more sources

Metaplexis japonica seed hair fiber: a member of natural hollow fibers and its characterization

Textile research journal, 2019
Metaplexis japonica seed hair fibers (Mj-fiber), harvested from the seed pods of Metaplexis japonica (Apocynaceae: Asclepiadoideae) originating in China, Japan and Korea, have features ensuring its potential application in the textile and other ...
Zongqian Wang, Dengfeng Wang, Mingrong Wang, Wei Li, Q. Sui   +4 more
semanticscholar   +1 more source

Fiber-Reinforced Mortar Incorporating Pig Hair

Advanced Engineering Forum, 2017
Recycled fibers from food-industry could be added as reinforcement to cement-based materials. Cement-based materials perform well under compression, but tensile strength and post-cracking ductility in tension are poor. Fibers produced from steel, glass and synthetic materials, have been successfully used to overcome some of these shortcomings.
Gerardo Araya-Letelier, Federico C. Antico, Pablo Fernado Parra, Miguel Carrasco   +3 more
openaire   +1 more source

Wetting behavior of human hair fibers

Journal of Applied Polymer Science, 1978
AbstractThe wetting behavior of human hair in water has been investigated using a technique based on the Wilhelmy balance principle. The experimental technique makes it possible to study the relaxation effects occurring at the solid–liquid–air interface.
Y. K. Kamath, C. J. Dansizer, H.‐D. Weigmann   +2 more
openaire   +1 more source

Menkes Kinky Hair Disease with ‘Ragged Red’ Fibers

Developmental Medicine & Child Neurology, 1988
SummaryA 30‐month‐old infant with Menkes kinky‐hair disease died, with prominent vascular, cerebral and cerebellar degeneration. Increased numbers of mitochondria containing homogeneous dense bodies were seen on electron–microscopic: examination of Purkinje cells.
S, Morgello, H D, Peterson, L J, Kahn, H, Laufer   +3 more
openaire   +2 more sources

Is polar bear hair fiber optic?

Applied Optics, 1998
New direct measurement of high optical attenuation rates in polar bear hairs--2-8 dB/mm in the visible--and reanalysis of the data of Tributsch et al. [Sol. Energy Mater. 21, 219 (1990)] seem to rule out the UV waveguiding proposed by Grojean et al. [Appl. Opt. 19, 339 (1980)].
openaire   +2 more sources

Investigating the relationship between the hair fiber proteome and hair quality

International Journal of Cosmetic Science, 2004
Many hair characteristics (e.g. color and curl) are genetically determined. Here, we investigated whether hair quality is also genetically controlled and related to differences in hair composition. Female, Caucasian subjects (n = 292) were recruited into this study and segmented by self‐perceived hair quality and by permanent colorant usage.
D.M. Heywood, C. Vrettou, J. Wood, J. Hill, S. Casey, P.A. Cornwell   +5 more
openaire   +1 more source

Fiber-Safe Extraction of Red Mordant Dyes from Hair Fibers

Journal of the American Institute for Conservation, 1995
To extract red mordant dyes from wool fiber samples, a new method was devised using a solution of 0.1% ethylene diamine tetraacetic acid in water combined with N,N-dimethyl formamide.
Erica J. Tiedemann, Yiqi Yang
openaire   +1 more source

Analysis of DNA in hair fibers.

Journal of cosmetic science, 2003
The extraction and identification of deoxyribonucleic acid (DNA) from human hair shafts is described, along with the effects of hair treatments on levels of DNA and suggestions of DNA location within the shaft. DNA was present at low levels in the hair shaft, and was identified using polymerase chain reaction amplification of the human leukocyte ...
Daniella M, Heywood, Richard, Skinner, Paul A, Cornwell   +2 more
openaire   +1 more source

Examining polyquaternium polymers deposition on human excised hair fibers

Journal of Cosmetic Dermatology, 2017
SummaryBackgroundPolyquaterniums (PQs) as important ingredients of hair products are synthetic cationic polymers and are used in commercial hair volumizers and conditioners.MethodsThree different grades of polymers including PQ 87, 68, and 46 with various concentrations were used, and their hair deposition efficacy was measured at 5 different pH values
Javad Shokri, Maryam Shamseddini Lori, Farnaz Monajjemzadeh   +2 more
openaire   +2 more sources