Results 161 to 170 of about 1,026,853 (207)
Some of the next articles are maybe not open access.
Archives of Dermatology, 1988
• The alleged relationship between the cross sectional shape of the hair shaft and the form of the hair, eg, curly or straight hair, has been challenged. By serial sections of human hair follicles from ten patients representing the three biological races, the relation between the follicle form and the hair form was studied.
openaire +1 more source
• The alleged relationship between the cross sectional shape of the hair shaft and the form of the hair, eg, curly or straight hair, has been challenged. By serial sections of human hair follicles from ten patients representing the three biological races, the relation between the follicle form and the hair form was studied.
openaire +1 more source
Testing human hair for cannabis
Forensic Science International, 1995To validate information on cannabis use, we investigated human hair and pubic hair for cannabinoids (THC and THC-COOH) by gas chromatography/mass spectrometry. Samples (100 mg approximately) were decontaminated with methylene chloride, then pulverized and dissolved in 1 ml 1 N NaOH for 10 min at 95 degrees C in the presence of 200 ng of deuterated ...
V, Cirimele, P, Kintz, P, Mangin
openaire +2 more sources
Water management of human hair
International Journal of Cosmetic Science, 2008Citation: IFSCC Magazine, 10 (2007) (4) 317–320Temperature dependent isotherms for the water ab‐ and desorption of human hair were determined (25–65°C) together with the related diffusion coefficients and hysteresis effects. Special care was taken to standardize the physical history of the samples.
Wortmann, F, Hullmann, A, Popescu, C
openaire +3 more sources
International Journal of Cosmetic Science, 2019
AbstractObjectiveIn the process of daily grooming, human hair often undergoes heat treatments. These treatments create temperature gradients inside individual hair fibres or bundles of hair which can lead to hair damage.MethodsMathematical models were built for heat transfer in a single hair as well as thin tresses of hair during blow drying ...
E, Petrovicova, Y K, Kamath
openaire +2 more sources
AbstractObjectiveIn the process of daily grooming, human hair often undergoes heat treatments. These treatments create temperature gradients inside individual hair fibres or bundles of hair which can lead to hair damage.MethodsMathematical models were built for heat transfer in a single hair as well as thin tresses of hair during blow drying ...
E, Petrovicova, Y K, Kamath
openaire +2 more sources
Experientia, 1972
Es werden Korrelationen zwischen dem Spurelementgehalt des menschlichen Haares und verschiedenen physiologischen und pathologischen Faktoren hergestellt.
M H, Briggs, M, Briggs, A, Wakatama
openaire +2 more sources
Es werden Korrelationen zwischen dem Spurelementgehalt des menschlichen Haares und verschiedenen physiologischen und pathologischen Faktoren hergestellt.
M H, Briggs, M, Briggs, A, Wakatama
openaire +2 more sources
Journal of Photochemistry and Photobiology B: Biology, 2007
In general, human hair is claimed to turn yellower after sun exposure. This is particularly affirmed for white hair. However, quantitative data relating yellowness to hair type and to the radiation wavelength are missing. This work shows results of the effect of full or UVB-filtered radiation of a mercury vapor or a xenon-arc lamp on the yellowness of ...
A C S, Nogueira +3 more
openaire +2 more sources
In general, human hair is claimed to turn yellower after sun exposure. This is particularly affirmed for white hair. However, quantitative data relating yellowness to hair type and to the radiation wavelength are missing. This work shows results of the effect of full or UVB-filtered radiation of a mercury vapor or a xenon-arc lamp on the yellowness of ...
A C S, Nogueira +3 more
openaire +2 more sources
Nanomechanical responses of human hair
Journal of the Mechanical Behavior of Biomedical Materials, 2016Here we report the first ever studies on nanomechanical properties e.g., nanohardness and Young׳s modulus for human hair of Indian origin. Three types of hair samples e.g., virgin hair samples (VH), bleached hair samples (BH) and Fe-tannin complex colour treated hair samples (FT) with the treatment by a proprietary hair care product are used in the ...
Aniruddha Samanta +11 more
openaire +2 more sources
1988
The primary reactions involved in permanent-waving, straightening (relaxing), and depilation of human hair begin with reduction of the disulfide bond. In permanent-waving and hair straightening, reduced hair is stressed, that is, curled or combed straight, while molecular reorientation takes place primarily through a disulfide—mercaptan interchange ...
openaire +1 more source
The primary reactions involved in permanent-waving, straightening (relaxing), and depilation of human hair begin with reduction of the disulfide bond. In permanent-waving and hair straightening, reduced hair is stressed, that is, curled or combed straight, while molecular reorientation takes place primarily through a disulfide—mercaptan interchange ...
openaire +1 more source
1988
The composition of amino acid residues in bleached hair and in hydroly-sates of oxidized keratin fibers is described in Chapter 2 and also in publications by Zahn [1,2], Robbins et al. [3–6], Maclaren et al. [7,8], and Alter and Bit-Alkis [9]. Although, several questions remain unanswered, especially with regard to the structures and reactions of hair ...
openaire +1 more source
The composition of amino acid residues in bleached hair and in hydroly-sates of oxidized keratin fibers is described in Chapter 2 and also in publications by Zahn [1,2], Robbins et al. [3–6], Maclaren et al. [7,8], and Alter and Bit-Alkis [9]. Although, several questions remain unanswered, especially with regard to the structures and reactions of hair ...
openaire +1 more source
Clinics in Dermatology, 1988
Abstract The process of hair formation involves keratinization. Hair and its sheaths undergo keratinization at different speeds and with different modes. In the hair bulb, the matrix of hair and its follicle are composed of similar-looking immature cells, eg, they all contain a small number of wispy tonofilaments and weakly developed desmosomes ...
openaire +2 more sources
Abstract The process of hair formation involves keratinization. Hair and its sheaths undergo keratinization at different speeds and with different modes. In the hair bulb, the matrix of hair and its follicle are composed of similar-looking immature cells, eg, they all contain a small number of wispy tonofilaments and weakly developed desmosomes ...
openaire +2 more sources