Relevant bibliographies by topics / Hair characteristics

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Hair characteristics'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Hair characteristics"

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Wyrostek, Anna, Katarzyna Roman, Katarzyna Czyż, Marzena Janczak, and Bożena Patkowska-Sokoła. "Analysis of the hair coat of domestic cats with special focus on histological structure." Roczniki Naukowe Polskiego Towarzystwa Zootechnicznego 13, no. 1 (March 31, 2017): 47–58. http://dx.doi.org/10.5604/01.3001.0013.5309.

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The aim of the study was to characterize the hair coat of domestic cats. The research material consisted of hairs of different fractions collected in winter from female cats with a uniform hair coat colour: white,cream, red, brown and black. The hairs were divided into individual fractions, i.e. underhair, bristle hair and guard hair, and the following characteristics were evaluated: thickness, length, long and short axis length, stress at break and elongation. SEM (scanning electron microscope) images of all types of hair were taken and used to characterize each hair type and to calculate the number of scales per mm of hair length. The content of ions of various chemical elements was determined as well. Underhairs, which accounted for the largest percentage in the coat, were the thinnest and shortest, and had the most regular and distinct scale pattern. Guard hairs were the least numerous, but were the longest and thickest of all hairs examined. Both guard and bristle hairs had irregular scales with jagged edges. The cross-sections of these hairs revealed the presence of all the layers, i.e. the cuticle, cortex and medulla. In the underhair fraction the medulla was observed only in red cats. In all hairs the share of carbon, oxygen and sulphur ions was largest; these are the main omponents of hair protein, i.e. keratin.
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Tintner, Johannes, Jennifer Hatlauf, Heidi Weber, and József Lanszki. "Molecular Recalcitrance of Hair Passing the Digestive System of a Canid." Molecules 25, no. 19 (September 25, 2020): 4404. http://dx.doi.org/10.3390/molecules25194404.

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Hair is an important component in scat that is commonly used for prey analyses in carnivores. Chemically, hair predominately consists of keratin. The recalcitrant fiber protein is degraded in nature only by a few insects and soil microorganisms. Common proteases such as pepsin do not decompose keratin. Infrared spectroscopy was used to detect chemical differences caused by pretreatment and fate of hairs. Three sample sets were compared: original untreated hair, original milled hair, and hairs extracted from scats of golden jackals (Canis aureus L.). The results revealed that only milling affected the infrared spectral pattern, whereas digestion had no impact. Moreover, hairs from different species (e.g., boar) could be distinguished due to their spectral characteristics. They did not change through the passage of the digestive system.
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Takahashi, Toshie. "Unique Hair Properties that Emerge from Combinations of Multiple Races." Cosmetics 6, no. 2 (June 21, 2019): 36. http://dx.doi.org/10.3390/cosmetics6020036.

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The fusion of ethnicity in human populations is becoming increasingly common, so the conventional definition of ethnicity is going to become deficient. The aim of this study was to investigate the hair properties which emerge from combinations of multiple races. Hair fibers collected from mixed-race subjects were investigated and classifications of hair shape as well as measurements of thickness, ellipticity and surface damage were carried out. The results show that hair shapes varied widely: straight hair and very curly hair often existed together on the heads of individuals with mixed ethnicity. Curly hair tended to be thicker than loose wavy hair. As for damage to the hair surface, the hairs of mixed-race subjects showed a very unique property in that they were much more severely damaged near the root (the proximal end) than the hairs of monoracial subjects. The hair shape (curly or loose wavy) was not related to the level of damage. The severe damage near the proximal end is thought to be caused by entanglement, due to the presence of various curl phases. This study reports the unique characteristics of hairs of subjects with mixed ethnicity, which have never been noted in the previous studies on subjects with a monoracial background.
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Thozhur, S. M., A. D. Crocombe, P. A. Smith, K. Cowley, and M. Mullier. "Cutting characteristics of beard hair." Journal of Materials Science 42, no. 20 (January 4, 2007): 8725–37. http://dx.doi.org/10.1007/s10853-006-1338-3.

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Zhang, Yi, Qiu Ting Zheng, Xiao Qing Wang, and Hua Wu Liu. "Structure Structural Characteristics of Rabbit Hair." Advanced Materials Research 332-334 (September 2011): 1073–76. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.1073.

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Key morphological features of rabbit hair were investigated and compared with these of cashmere fiber. When the rabbit fiber diameter was about 10um, the angle of scale edge to the fiber axis was small. When the fiber diameter was around 40um, scale edges inclined larger angles to the axis. In addition, no overlapping and checks along the scale edges were observed in such coarse hair. The rabbit fiber diameters were normally between 10um and 20um and the scales of these fibers were long strip shaped with sharp tip at the middle. There was obvious boundary in the cashmere fiber after dyeing. One side is far darker than the other. On the contrast, this bilateral structure was not observed in the rabbit hair samples. The cortical cells presented in an uneven distribution in the rabbit hair. The mean ratio of medulla (filled with plenty of air) to fiber diameter was about 40%, which provide excellent thermal insulation to the rabbit hair assemblies.
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Yates, B. C. "Utility Of Secondary Guard Hairs In Animal Hair Identification." Microscopy and Microanalysis 5, S2 (August 1999): 1344–45. http://dx.doi.org/10.1017/s1431927600020043.

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Variability among hairs of humans is dependent on body source and ethnicity. Variability in the hairs of non-human mammals is also dependent on somatic source, but may exhibit a wide range of characteristics among hairs from any given site. Humans do not have secondary guard hairs as defined below, but forensic scientists involved in trace analysis must recognize a different suite of variability that exists when examining animal hairs. Hairs other than primary guard hairs from the dorsum, which are often the only representative hairs illustrated in animal hair atlases, may be present as trace evidence in a forensic case in which the origin of the hair is unknown. An overview of the different grades of animal hair that could be present in a forensic case or natural history inquiry places the secondary, tertiary, etc. guard hairs in a continuum that is based on relative diameters.
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Charpin, D. A., V. Penel, C. Charpin-Kadouch, C. Pichot, and M. Calleja. "Recovery Of Pollen From Hair Washes According To Hair Characteristics." Journal of Allergy and Clinical Immunology 125, no. 2 (February 2010): AB19. http://dx.doi.org/10.1016/j.jaci.2009.12.106.

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Ito, M., T. Tazawa, K. Ito, N. Shimizu, K. Katsuumi, and Y. Sato. "Immunological characteristics and histological distribution of human hair fibrous proteins studied with anti-hair keratin monoclonal antibodies HKN-2, HKN-4, and HKN-6." Journal of Histochemistry & Cytochemistry 34, no. 2 (February 1986): 269–75. http://dx.doi.org/10.1177/34.2.2418103.

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By use of a mouse hybridoma technique, monoclonal antibodies were produced against hair fibrous proteins, which were extracted from normal human hairs. Three monoclonal antibodies, designated as HKN-2, HKN-4, and HKN-6, were chosen and used to investigate the immunological characteristics of hair fibrous proteins. Epidermal fibrous proteins were also extracted from human sole callus horny materials. Hair or epidermal fibrous proteins were electrophoretically separated on polyacrylamide gels with sodium dodecyl sulfate. By immunoblot analyses, HKN-2 and HKN-4 marked the electrophoretic bands of both proteins; however, HKN-6 reacted only with the bands of hair fibrous proteins. Immunohistochemically, all three monoclonal antibodies stained the keratogenous zone of anagen hairs. HKN-6 did not react with any other skin components or with tissues of other organs examined. Although HKN-2 showed reactions with skin epithelial tissues, except for epidermal basal cells and secretory cells of sweat glands, the reactivity of HKN-2 was limited within the skin. HKN-4 displayed a broad crossreactivity with all of the skin epithelial cells and various epithelial cells of other organs. These findings indicate that some components of hair fibrous proteins are immunologically specific to hair cells, whereas others broadly crossreacted with the fibrous proteins of other skin epithelial cells or with those of various epithelial cells. The anti-hair keratin monoclonal antibodies seem useful to examine the differentiation patterns of epithelial cells and tissues.
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Kamalakannan, Manokaran. "The identification of Takin Budorcas taxicolor (Mammalia: Bovidae) through dorsal guard hair." Journal of Threatened Taxa 10, no. 15 (December 26, 2018): 13014–16. http://dx.doi.org/10.11609/jott.3357.10.15.13014-13016.

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The dorsal guard hairs of Takin Budorcas taxicolor was examined using the optical light and scanning electron microscopes for species identification. It is found that the dorsal guard hair of B. taxicolor is possessed a completely unique microscopic characteristic especially the medullary character-uniserial ladder structure, which differs from other species of mammals. The ‘irregular wave’ of scale patterns and ‘rippled’ scale margins of cuticular, and the ‘circular’ shape of a transverse section of hair also determines the species identity of B. taxicolor, because these characteristics are infrequent in other species of mammals. The micro-photographs and characters of hairs are presented here can be used in the forensic science, as an appropriate reference for species identification of B. taxicolor.
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Cuyler, Christine, and Nils A. Øritsland. "Do seasonal changes in Svalbard reindeer fur have relevance for heat transfer?" Rangifer 22, no. 2 (March 1, 2002): 133. http://dx.doi.org/10.7557/2.22.2.1532.

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Physical characteristics of Svalbard reindeer (Rangifer tarandus platyrhynchus) fur samples were examined with respect to season. A total of 33 dorsal fur sections including adults and calves were investigated. A direct relationship between hair density and heat transfer was not observed, and optimal hair density may depend on an interaction with other fur characteristics. Seasonal changes in fur length and depth were inversely proportional to, and appear to be the main determinants of, seasonal changes in calm air conductance. Fur length and depth, however did not explain the exceptional wind resistance of Svalbard reindeer fur. Since wind has little effect on heat transfer through Svalbard reindeer fur regardless of season or animal age, fur characteristics, which change are not likely critical. Instead, constant physical characteristics, which trap still-air within the fur and resist wind compaction and penetration, are probably responsible. These could include hair stiffness, the crimped wave, hollow hairs, intertwining distal tips and the fine wool fuzz about the hair roots. The extent and means are not well understood at present.
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Dissertations / Theses on the topic "Hair characteristics"

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Sequeira, Inês. "Hair follicle renewal : characteristics of the stem cells." Paris 6, 2010. http://www.theses.fr/2010PA06A697.

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Le follicule pileux se régénère à partir de cellules souches multipotentes situées dans le bulge. Cependant, la multipotentialité de ces cellules souches a été évaluée au niveau de la population entière. Grâce à un système de marquage clonale, nous avons démontré que le pool de cellules souches est hétérogène et contient des précurseurs avec des contributions multipotentes, ainsi que des précurseurs avec des contributions restreintes, ce qui remet en cause le concept de cellule souche multipotente. Ensuite, j’ai décrit la participation de deux groupes distincts de cellules souches au renouvellement du follicule pileux: un groupe contribue uniquement à la gaine épithéliale externe (ORS), caractérisant un lignage restreint; l’autre groupe contribue aux cellules compagnons de l’ORS, aux structures internes et à la matrice du follicule pileux, caractérisant un lignage multipotent. Ces résultats modifient la vision actuelle du comportement des cellules souches et mènent à une re-évaluation de l’organisation cellulaire du follicule pileux. Enfin, j’ai décrit morphologiquement les différents types de follicules pileux de la souris. Pour définir les différences des comportements cellulaires qui mènent à une telle variété, j’ai mis en place une stratégie d’imagerie pour caractériser les divisions cellulaires des cellules souches de la matrice, ainsi qu’un système de culture pour étudier les comportements cellulaires in vivo. Cette étude est basée sur deux stratégies complémentaires (l’analyse clonale rétrospective et l’imagerie 4D). La combinaison de ces approches nous apporte une description des stratégies morphogénétiques sous-tendant le développement du follicule pileux.
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Ndlovu, (Mamabolo) Thabisile Mavis. "The effects of hair relaxer treatment on the amino acid profile and surface characteristics of South African Negroid hair." Thesis, University of Limpopo (Medunsa Campus), 2011. http://hdl.handle.net/10386/669.

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Thesis (MSc (Chemistry)) -- University of Limpopo, 2011.
Surveys indicate that most South African origin women want long and straight hair (Mamabolo and Summers, 2006). Such women will therefore use a relaxer to straighten their hair. Many such preparations cause damage to the hair and scalp; hence identification of an effective and mild relaxer would be advantageous. This dissertation investigates South African origin hair structure and goes on to describe the effects of relaxers on South African origin hair. This work also analyses the effects of the lye and no-lye relaxers separately. The work was divided into two sections. The first section was the clinical study where two types of relaxers (‘lye’, a sodium hydroxide base relaxer and ‘no-lye’, a guanidine hydroxide base relaxer) were applied on the new outgrowth representing natural hair in a half-head study design of five South African origin female volunteers. Subjective (subject self-assessment) and objective (Researcher assessment) hair assessments were performed. The second section was the analysis of the hair samples by Reversed-Phase High Performance Liquid Chromatography (HPLC) using the Pico Tag as well as Electron Microscopy. There was no erythema detected in the clinical study on the scalp of any of the subjects post-application. Both the researcher and the subjects assessed the performance of the no-lye relaxer to be better than the lye relaxer in terms of straightness. The researcher also assessed the performance of the no-lye relaxer to be better than the lye relaxer in terms of softness, shininess, volume and dryness. The performance of the two types of relaxers was assessed to be the same by both the researcher and the subjects in terms of length and damage. There was a statistically significant (p< 0.1) decrease in the amount (g/100 g hair) of cystine after treatment compared to before treatment with both the lye relaxer (median [range]) (7.8 [2.5-9.9] vs. 9.1 [6.7-11.9]; p= 0.086) and the no-lye relaxer (4.0 [2.9-4.8] vs. 9.1 [6.7-11.9]; p= 0.005); this decrease was significantly greater (p= 0.086) for the no-lye relaxer. There was also a statistically significant decrease in the amount of lysine after treatment compared to before treatment with both the lye relaxer (2.0 [1.5-2.3] vs. 2.1 [2.0-2.6]; p= 0.082) and the no-lye relaxer (2.0 [1.5-2.2]; p= 0.036); this decrease was not significantly different (p= 0.920) for the two types of relaxer. No significant differences were found in the levels of the remaining 15 amino acids analysed. For all the subjects no physical evidence of hair damage was observable from the scanning electron microscopy images of the hair shafts and the cuticles. The longer wash-off time confirmed the claimed relative safety of ‘no-lye’ relaxers. The no-lye relaxer performed better overall than the lye relaxer in terms of the hair quality parameters assessed. A decrease in cystine levels is consistent with better performance in terms of hair straightness. The results from electron microscopy were not conclusive.
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Lodge, Richard. "Wetting behavior and surface potential characteristics of human hair." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1165335748.

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Mkentane, Kwezikazi. "Human scalp hair: geometry, biochemistry, growth parameters and mechanical characteristics." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23419.

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Scalp hair is increasingly being used as a testing substrate for toxins and monitoring treatment adherence. The biochemistry of human hair is assumed to be similar; however, a recent study reported higher concentration of lipids in African hair. The effect of hair curvature, if any, on drug incorporation (e.g. lipid soluble drugs) is unknown. Racial description of hair morphology is unscientific. A geometric classification of hair into 8 groups (I-straight to VIII-tightly curly) was recently proposed, however its reliability has not been confirmed. The aim of this thesis was to investigate the reliability of the geometric classification (and to assess whether it could be improved) and investigate relationships between morphology and other hair characteristics. Virgin hair was collected from 128 volunteers using a standardized protocol. Geometric measurements of hair using published templates were conducted for classification. Reliability was assessed using Kappa statistics. Characteristics assessed included mechanical properties (miniature tensile tester), growth rate and hair density (TrichoScan® trichogram), biochemistry (Vanillin assay for lipids and Fourier Transform Infrared adsorption) and imaging (Electron and Fluorescent Light Microscopy). Inter-observer agreement was poor for 8-groups (k=0.418) but improved for 6-groups (k=0.671). The intra-observer agreement also improved [ranges: k=0.444 to 0.648 (8-groups) and k=0.599 to 0.836 (6-groups)]. The yield strength of all hair groups was higher than reported for racially grouped samples. Curly hair groups had lower growth rates and tensile strengths. The TrichoScan based growth rate was for fastest for the straightest (0.72±0.3 cm/month) and slowest for the curliest (0.39 ± 0.2 cm/month) hair. No correlation with biochemistry was detected for either the 8 or 6-group classification, although a trend toward higher absorption of lipid (C-H) bands was noted for curly hair. A supervised statistical approach applied to 4 hair groups using the FTIR data improved classification success to 79% (range: 69% - 88%), which needs confirmation but would be more objective than using race for hair testing in Medicine and Forensic Science. This thesis supports a geometric classification with fewer groups (6, based kappa statistics and 4, based on biochemistry); it is also the first to report correlations between hair geometry, biochemistry and physical properties.
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Chidurala, Manohar. "Dynamic Characteristics of Biologically Inspired Hair Receptors for Unmanned Aerial Vehicles." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2040.

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The highly optimized performance of nature’s creations and biological assemblies has inspired the development of their engineered counter parts that can potentially outperform conventional systems. In particular, bat wings are populated with air flow hair receptors which feedback the information about airflow over their surfaces for enhanced stability and maneuverability during their flight. The hairs in the bat wing membrane play a role in the maneuverability tasks, especially during low-speed flight. The developments of artificial hair sensors (AHS) are inspired by biological hair cells in aerodynamic feedback control designs. Current mathematical models for hair receptors are limited by strict simplifying assumptions of creeping flow hair Reynolds number on AHS fluid-structure interaction (FSI), which may be violated for hair structures integrated on small-scaled Unmanned Aerial Vehicles (UAVs). This study motivates by an outstanding need to understand the dynamic response of hair receptors in flow regimes relevant to bat-scaled UAVs. The dynamic response of the hair receptor within the creeping flow environment is investigated at distinct freestream velocities to extend the applicability of AHS to a wider range of low Reynolds number platforms. Therefore, a threedimensional FSI model coupled with a finite element model using the computational fluid dynamics (CFD) is developed for a hair-structure and multiple hair-structures in the airflow. The Navier-Stokes equations including continuity equation are solved numerically for the CFD model. The grid independence of the FSI solution is studied from the simulations of the hairstructure mesh and flow mesh around the hair sensor. To describe the dynamic response of the hair receptors, the natural frequencies and mode shapes of the hair receptors, computed from the finite element model, are compared with the excitation frequencies in vacuum. This model is described with both the boundary layer effects and effects of inertial forces due to fluid-structure xiv interaction of the hair receptors. For supporting the FSI model, the dynamic response of the hair receptor is also validated considering the Euler-Bernoulli beam theory including the steady and unsteady airflow.
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Jawahar, Malathy, S. V. Kanth, V. Rajangam, and Tamil Selvi. "Automatic Leather Species Identification using Machine Learning Techniques - 261." Verein für Gerberei-Chemie und -Technik e. V, 2019. https://slub.qucosa.de/id/qucosa%3A34325.

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Content: Identification and classification of leather species becomes valuable and necessary due to concerns regarding consumer protection, product counterfeiting, and dispute settlement in the leather industry. Identification and classification of leather into species is carried out by histological examination or molecular analysis based on DNA. Manual method requires expertise, training and experience, and due to involvement of human judgment disputes are inevitable thus a need to automate the leather species identification. In the present investigation, an attempt has been made to automate leather species identification using machine learning techniques. A novel non-destructive leather species identification algorithm is proposed for the identification of cow, buffalo, goat and sheep leathers. Hair pore pattern was segmented efficiently using k-means clustering algorithm Significant features representing the unique characteristics of each species such as no.of hair pores, pore density, percent porosity, shape of the pores etc., were extracted. The generated features were used for training the Random forest classifier. Experimental results on the leather species image library database achieved an accuracy of 87 % using random forest as classifier, confirming the potentials of using the proposed system for automatic leather species classification. Take-Away: Novel technique to identify leather species Non destructive method Machine learning algorithms to automate leather species identification
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Neretin, Yurii A., and neretin@main mccme rssi ru. "Hua Type Integrals over Unitary Groups and over Projective Limits of." ESI preprints, 2000. ftp://ftp.esi.ac.at/pub/Preprints/esi889.ps.

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Howe, Katherine Mitchell. "The ecology of invasions in a Minnesota grassland : characteristics of invasive species and invaded communities and the effects of global change /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/5266.

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Ödvall, Elina, and Charlotte Heikkinen. "Kvinnans resa till chefsposition : Vad har bidragit till chefspositionen?" Thesis, Jönköping University, Högskolan för lärande och kommunikation, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-48557.

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Kvinnliga chefer är ett omdiskuterat ämne i samhället i relation till jämställdhet. Diskussionerna kring vad som bidragit under kvinnans resa för att lyckas nå chefspositioner kan beskrivas utifrån individuella egenskaper och olika organisatoriska faktorer. Utifrån en problemdiskussion landade vi in i studiens syfte som är att beskriva individuella egenskaper och organisationens bidrag till kvinnans resa till chefsposition. Studiens har genomförts via en kvalitativ datainsamling i form tre steg. Steg ett semistrukturerade intervjuer med kvinnlig chef. Steg två telefonintervju med kvinnlig chefs respektive samt steg tre uppföljning via mail med kvinnlig chef. Datainsamlingen ledde till en empirisk dataanalys som i sin tur bidrog till identifiering av individuella egenskaper i form av motivation, organisations kompetensförsörjning samt den kollektiva resan. Genom en analys resulterade de individuella egenskaper i form av motivation utifrån tre former som samspelar med varandra vilka är intern motivation, extern motivation och motivation som rörelse/energi. Samspelet vi identifierat är för att motivation skall uppstå krävs en rörelse/energi mellan individen och intern/extern motivation. Om bara en rörelse/energi finns men ingen riktning är utstakad ser vi att motivationen inte leder till ett resultat. Samt att organisationens kompetensförsörjning utifrån tre faser. Fas ett attrahera och rekrytera, fas två behålla och utveckla samt fas tre avveckla och omställning bidrar till kvinnans resa. Utifrån analysen resulterade det i svar på studiens syfte som visar att kvinnans individuella egenskaper i form av motivation tillsammans med organisationen kompetensförsörjning bidrar till kvinnans resa till chefsposition.
Female managers are a debated topic in society in relation to gender equality. The discussions about what contributed during the women's journey to succeed in reaching managerial positions can be described on the basis of individual characteristics and different organizational factors. From a problem discussion, we landed in the purpose of the study, which is to describe individual characteristics and the organization's contribution to the women's journey to managerial position. The study has been conducted through a qualitative data collection in form of three steps. Step one semi-structured interviews with female managers. Step two telephone interview with female managers partner and step three follow-up by mail with female managers. The data collection led to an analysis, which in turn contributed to the identification of individual characteristics in the form of motivation, organizational competence provision and the collective journey. Through an analysis, the individual characteristics resulted in motivation based on three forms that interact with each other which are internal motivation, external motivation and motivation as movement/energy. The interaction we have identified is that for motivation to arise, a movement/energy between the individual and internal/external motivation is required. If only movement/energy exists but no direction is outlined, we see that motivation doesn´t lead to a result. And that the organization's competence provision is based on three phases. Phase one is attracting and recruiting, phase two retaining and developing and phase three dismantling and conversion contributing to the women's journey. Based on the analysis, it resulted to the study's purpose which show that the women's individual characteristics in the form of motivation together with the organization's competence provision contribute to the women's journey to the managerial position.
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Hooper, William Craig. "The characteristics of the in vivo and in vitro response of hairy cell leukemia to inducers of differentiation /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487260531955703.

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Books on the topic "Hair characteristics"

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J, Fox Michelle, ed. Atlas of human hair microscopic characteristics. Boca Raton, Fla: CRC Press, 1999.

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Bad hair day. New York: Scholastic, Incorporated, 2014.

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Alusa, Alexander L. Some characteristics of hailstorms in Kericho-Nandi Hills area of Kenya. Nairobi: Kenya Meteorological Dept., 1986.

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What so proudly we hail: The American soul in story, speech, and song. Wilmington, Del: ISI Books, 2011.

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Whatever After's: Bad Hair Day. Scholastic, 2015.

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Christenson, Gary A. H. The Assessment and Treatment of Trichotillomania. Edited by Jon E. Grant and Marc N. Potenza. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780195389715.013.0095.

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The successful treatment of trichotillomania necessitates an initial clinical evaluation of the cognitive, emotional, behavioral, and situational characteristics contributing to an individual’s hair pulling. Assessment also requires a comprehensive psychological/psychiatric interview to assess for comorbid illness, which may either contribute to hair pulling or require separate attention. Several instruments have been designed to assist in quantifying the core symptoms of trichotillomania and can be useful for monitoring treatment progress over time. Treatment approaches include medication, hypnosis, and behavioral therapies, especially modifications of habit reversal therapy. Controlled studies are few in number and are limited to only a few behavioral treatment approaches and medication classes. Research suggests that variations of habit reversal therapy have the greatest efficacy of the interventions investigated thus far. There is additional support for treatment with clomipramine, N-acetylcysteine, and olanzapine, in contrast to multiple other drugs that have been studied or suggested as useful for trichotillomania.
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McLeish, Tom. Soft Matter: A Very Short Introduction. Oxford University Press, 2020. http://dx.doi.org/10.1093/actrade/9780198807131.001.0001.

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Soft Matter: A Very Short Introduction explores the field of soft matter, looking beneath the appearances of matter into its inner structure. Drawing on physics, chemistry, mathematics, and engineering, soft matter science links fundamental scientific ideas to everyday phenomena such as ‘inkiness’ and ‘stickiness’, with a rich history and philosophy. It studies materials such as polymers, colloids, liquid crystals, and foams. This VSI shows how Brownian Motion—the random molecular motion underlying ‘heat’—is an underpinning principle of soft matter. From hair conditioners to honey, it discusses how common characteristics of these materials shape their behaviour and applications.
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Abad al-shakhsiyah al-Misriyah bayna al-madi wa-al-hadir. al-Hayah al-Misriyah al-Ammah lil-Kitab, 1999.

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Palmer, R. R. Germany: The Revolution of the Mind. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691161280.003.0029.

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This chapter focuses on Germany during the revolutionary decade. The years of political change coincided with the supreme efflorescence of German thought and culture. It was the age of Goethe and Schiller, of Mozart and Beethoven, of Kant, Fichte, Hegel, Herder, Schleiermacher, and the Humboldts. Under the influence of such masters, a new German national consciousness was beginning to take form. An ambivalent attitude to revolution entered into the national outlook. The Germans neither rejected revolution in the abstract, nor accepted it in its actual manifestations. Nothing was more characteristic, in Germany before 1800, than to continue to hail the principles and goals of the French Revolution with enthusiasm, and to believe that in French hands, thanks to French faults, these principles had miscarried.
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Book chapters on the topic "Hair characteristics"

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Palakurthi, Radha R., and Raghuveer Palakurthi. "Hair Characteristics of South Asians." In Practical Aspects of Hair Transplantation in Asians, 21–25. Tokyo: Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56547-5_4.

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Abbasi, Ali, Ramin Rabbani, and Sheida Abbasi. "Hair Characteristics of West Asians." In Practical Aspects of Hair Transplantation in Asians, 27–33. Tokyo: Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56547-5_5.

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Boehme, Adine. "Acquired Characteristics." In A Practical Guide to the Forensic Examination of Hair, 189–208. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.4324/9781315210650-8.

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Ortega-Castillejos, Dell Kristie. "Hair Characteristics of East and Southeast Asians." In Practical Aspects of Hair Transplantation in Asians, 17–20. Tokyo: Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56547-5_3.

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Zabielinski, Marilyn, and Antonella Tosti. "General Characteristics of Hair in Eating Disorders." In Eating Disorders and the Skin, 71–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29136-4_13.

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Horst, J. Wiebe, and Piet C. de Jong. "Modelling Input-Output Characteristics of the Inner Hair Cell." In Lecture Notes in Biomathematics, 18–25. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4757-4341-8_3.

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Iwata, Mana, Kohei Otake, and Takashi Namatame. "Analysis of the Characteristics of Customer Defection on a Hair Salon Considering Individual Differences." In Lecture Notes in Computer Science, 378–91. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21905-5_29.

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Amemiya, Nanase, Remi Terada, and Yumi Asahi. "Characteristic Analysis of Each Store in Japanese Hair Salon." In Human Interface and the Management of Information. Information in Applications and Services, 12–30. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-92046-7_2.

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Sioutas, M. "Hail Characteristics and Cloud Seeding Effect for Hail Suppression in Central Macedonia, Greece." In Perspectives on Atmospheric Sciences, 271–77. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-35095-0_38.

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Jeong, Gwi-Taek, Don-Hee Park, Baik Hwang, and Je-Chang Woo. "Comparison of Growth Characteristics of Panax ginseng Hairy Roots in Various Bioreactors." In Biotechnology for Fuels and Chemicals, 493–503. Totowa, NJ: Humana Press, 2003. http://dx.doi.org/10.1007/978-1-4612-0057-4_41.

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Conference papers on the topic "Hair characteristics"

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Hossain, A., and A. Mian. "Dynamic Analysis of a Microscale Cricket Filiform Hair Socket." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50633.

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Filiform hairs of crickets are of great interest to engineers because of their highly sensitive response to low velocity air currents. In this study, the cercal sensory system of a common house cricket has been analyzed. The sensory system consists of two antennae like appendages called cerci that are situated at the rear of the cricket’s abdomen. Each cercus is covered with 500–750 flow sensitive hairs that are embedded in a complex viscoelastic socket that acts as a spring -dashpot system and guides the movement of the hair. When the hair deflects due to the drag force induced on its length by a moving air-current, the spiking activity of the neuron and the combined spiking activity of all hairs are extracted by the cercal sensory system. The hair has been experimentally studied by few researchers though its characteristics are not fully understood. The socket structure has not been analyzed experimentally or theoretically from a mechanical standpoint. Therefore, this study aims to understand the dynamic response of socket and its interaction with the filiform hair. First, a 3D Finite Element Analysis (FEA) model, representing hair and hair-socket, has been developed. Then the dynamic analysis is conducted utilizing the appropriate load and boundary conditions based on the physical conditions that an insect experiences. These numerical analyses aid to understand the dynamic response of the hair and hair-socket system. The operating principles of the hair and hair-socket could be used for the design of highly responsive MEMS devices such as fluid flow sensors or micro-manipulators.
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Hossain, A., and A. Mian. "Static Analysis of a Microscale Cricket Filiform Hair Socket." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36065.

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Filiform hairs of crickets are of great interest to engineers because of their highly sensitive response to low velocity air currents. In this study, the cercal sensory system of a common house cricket has been analyzed. The sensory system consists of two antennae like appendages called cerci that are situated at the rear of the cricket’s abdomen. Each cercus is covered with 500–750 flow sensitive hairs that are embedded in a complex viscoelastic socket that acts as a spring -dashpot system and guides the movement of the hair. When the hair deflects due to the drag force induced on its length by a moving air-current, the spiking activity of the neuron and the combined spiking activity of all hairs are extracted by the cercal sensory system. The hair has been experimentally studied by few researchers though its characteristics are not fully understood. The socket structure has not been analyzed experimentally or theoretically from a mechanical standpoint. Therefore, this study aims to understand the socket’s behavior and its interaction with the filiform hair by conducting static analysis. First, a 3D Finite Element Analysis (FEA) model, representing hair and hair-socket, has been developed. Then the static analysis is conducted utilizing the appropriate load and boundary conditions based on the physical conditions that an insect experiences. These numerical analyses aid to understand the deformation mechanism the hair and hair-socket system. The operating principles of the hair and hair-socket could be used for the design of highly responsive MEMS devices such as fluid flow sensors or micro-manipulators.
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Bakharev, Aleksey, Aleksey Aleksandrovich Bakharev, Olga Mikhailovna Sheveleva, Svetlana Sergeevna Aleksandrova, Evgeny Petrovich Renev, and Andrey Georgievich Koshchaev. "Characteristics of Leather and Hair Covering of Nenets Deer." In International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/agrosmart-18.2018.10.

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Thapa Magar, Kaman, Gregory W. Reich, Matthew R. Rickey, Brian M. Smyers, and Richard V. Beblo. "Aerodynamic Characteristics Prediction via Artificial Hair Sensor and Feedforward Neural Network." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-8890.

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Fly by feel is a concept in which distributed sensors and actuators are integrated on an aerial system for state awareness or sensation of the environment, and make use of distributed control to increase the system maneuverability, stability and safety. Artificial hair sensors are good candidates as sensors for the fly by feel concept because they are lightweight, have low manufacturing costs and can easily be integrated on the surface of air-vehicle without affecting the flow. We investigate an application of artificial hair sensors considering its capability of measuring the local flow velocity combined with a Feedforward Artificial Neural Network to predict the aerodynamic quantities such as lift coefficient, moment coefficient, angle of attack and free-stream velocity in real-time. These quantities, when combined with the physical and unsteady aerodynamics parameters, will make a framework for designing and implementing an active controller for gust alleviation in a pitch and plunge airfoil system.
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Huang, Xiyong, Michael D. Protheroe, Ahmed M. Al-Jumaily, and Sharad P. Paul. "The Significance of Hair Thermal Diffusivity on Melanoma Incidence." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71693.

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There is an increased risk of melanoma in adulthood when a child (pre-puberty) has been exposed to high levels of ultraviolet radiation (UVR). It has also been hypothesized that the childhood body air (vellus hair) plays a role in the increased incidence of melanoma later in life. This is attributed to the fact that the vellus hair has properties and physiology which encourage the transmission of harmful energy into the follicle of the hair and ultimately cause damage to the stem cells in residence there. Later in life these damaged stem cells become involved in the generation of melanomas in the epidermis. It has been debated whether the UVR or the heat generated by it is the main contributor to melanoma occurrence. This research is the first step in investigating this phenomenon by focusing on the contribution of changes in thermal characteristics on the incidence of melanoma. To test the hypothesis that child hair can transmit energy more easily than adult hair the transient electro-thermal technique is used to determine the thermal diffusivity of the hair. This involved subjecting platinum coated hair samples to a current pulse and measuring the subsequent voltage response in the sample. Results show that the child hair has a thermal diffusivity around two times higher than adult hair, thus supporting the hypothesis. Further research will be needed, in particular, quantifying the optical transmission characteristics of child hair compared to adult hair.
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Travis, Jeffrey P., Myles D. Dunlap, Donald J. Leo, and J. Wallace Grant. "Dynamic Characterization of Biomimetic Artificial Hair Cells." In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3130.

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The research presented in this paper investigates the relationship between fluid flow characteristics in an artificial cochlear environment and artificial hair cell sensor response. First, a lipid bilayer-based hair cell sensor is created to model the inner hair cells of the human cochlea. The artificial cochlear environment is then fabricated to recreate the pulsating fluid flow around the artificial inner hair cell stereocilia. Mechanical excitation creates sinusoidal fluid flows in the artificial cochlear environment at a range of frequencies determined by the response of the hair cell sensor in air. For excitation frequencies at and below 40 Hz, the response of the hair cell sensor is approximately equal to the control case having no bilayer. At these low frequencies, bilayer dynamics do not appear to lead to current generation. At frequencies at and above 70 Hz, and in the absence of an externally applied DC offset across the bilayer, the hair cell sensors featuring a bilayer generate up to double the RMS current. Therefore, for excitation frequencies at and above 70 Hz, bilayer dynamics play a significant role in hair cell sensor response. Further testing of the hair cell sensor shows that applying a DC offset across the bilayer increases the peak-to-peak sensor output by up to a factor of 80.
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"Meat Quality Characteristics of Hair, Angora, Kilis and Honamli Turkish Indigenous Goat Breeds." In March 14-16, 2019 Paris (France). Eminent Association of Pioneers, 2019. http://dx.doi.org/10.17758/eares5.eap03191004.

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Pikhtirova, Alina, and Viktoria Ivchenko. "CHARACTERISTICS OF THE MICROSCOPIC STRUCTURE OF COAT HAIR CUTIQUE OF CAMEROON BREED (CAPRA AEGAGRUS HIRCUS)." In Scientific Development of New Eastern Europe. Publishing House “Baltija Publishing”, 2019. http://dx.doi.org/10.30525/978-9934-571-89-3_89.

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Sarlo, Rodrigo, Donald Leo, and Pablo Tarazaga. "Spectral Analysis and Characterization of a Membrane-Based Artificial Hair Cell Sensor." In ASME 2014 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/smasis2014-7578.

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A fully hydrogel-supported, artificial hair cell (AHC) sensor based on bilayer membrane mechanotransduction is designed with sensitivity and versatility in mind. Thanks to fabrication improvements from previous generations, the sensor demonstrates peak current outputs in the nanoamp range and can clearly measure inputs as high as 2k Hz. Characterization of the AHC response to base excitation and air pulses show that membrane current oscillates with the first three bending modes of the hair. Output magnitudes reflect of vibrations near the base of the hair. A 2 DOF Rayleigh-Ritz approximation of the system dynamics yields estimates of 19 N/m and 0.0011 Nm/rad for the equivalent linear and torsional stiffness of the hair’s hydrogel base, although double modes suggest non-symmetry in the gel’s linear stiffness. The sensor output scales linearly with applied voltage (1.79 pA/V), avoiding a higher-order dependence on electrowetting effects. The free vibration amplitude of the sensor also increases in a linear fashion with applied airflow pressure (18.4 pA/psi). Based on these sensitivity characteristics, an array sensing strategy for these sensors is proposed.
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Meaud, Julien, Thomas Bowling, and Charlsie Lemons. "Computational Modeling of Spontaneous Otoacoustic Emissions by the Mammalian Cochlea." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9044.

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The mammalian cochlea is a sensory system with high sensitivity, sharp frequency selectivity and a broad dynamic range. These characteristics are due to the active nonlinear feedback by outer hair cells. Because it is an active nonlinear system, the cochlea sometimes emits spontaneous otoacoustic emissions (SOAEs) that are generated in the absence of any external stimulus due to the emergence of limit cycle oscillations. In this work, we use a computational physics-based model of the mammalian cochlea to investigate the generation of SOAEs. This model includes a three-dimensional model of the fluid mechanics in the cochlear ducts, a micromechanical model for the vibrations of the cochlear structures, and a realistic model of outer hair cell biophysics. Direct simulations of SOAEs in the time-domain demonstrate that the model is able to capture key experimental observations regarding SOAEs. Parametric studies and analysis of model simulations are used to demonstrate that SOAEs are a global phenomenon that arises due to the collective action of a distributed region of the cochlea rather than from spontaneous oscillations from individual outer hair cells.
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Reports on the topic "Hair characteristics"

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Kersh, Steve. “Catastrophic Hail Storm & Lightning Characteristics From It”. Office of Scientific and Technical Information (OSTI), August 2020. http://dx.doi.org/10.2172/1777980.

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