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.
Full textNdlovu, (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.
Full textSurveys 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.
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.
Full textMkentane, Kwezikazi. "Human scalp hair: geometry, biochemistry, growth parameters and mechanical characteristics." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23419.
Full textChidurala, Manohar. "Dynamic Characteristics of Biologically Inspired Hair Receptors for Unmanned Aerial Vehicles." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2040.
Full textJawahar, 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.
Full textNeretin, 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.
Full textHowe, 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.
Full textÖdvall, 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.
Full textFemale 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.
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.
Full textBennedicks, Linnea, Persson Niklas Jarelius, and Johanna Stjernström. "Hur tar jag mig förbi det här? : En kvalitativ studie om självledarskapets fördelar i artisters karriärer." Thesis, Linnéuniversitetet, Institutionen för organisation och entreprenörskap (OE), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-79402.
Full textThe artist profession seems to have undergone a change due to the digitization. Changed conditions seem to have given the artist profession a more entrepreneurial side where the responsibility for their career has increased. The study has a starting point in the phenomenon of self-leadership and what role self-leadership plays for artists, and we answer the question: In which ways can self-leadership be an advantage in an artist’s career? The purpose with this study is therefore to examine what positive contributing roles self-leadership has on artist’s careers. The study has a qualitative deductive approach based on theories of self- leadership and motivation. Data is collected using structured interviews with established artists with questions based on the theories. Through these interviews we found some characteristics among the artists that suggests that some specific kinds of self-leadership are an advantage for an artist’s career. The conclusion in the study lands in a model of what we saw were the most important roles that self-leadership has for artists.
Sousa, Fabiane Maria Lima. "Study of reproductive tract characteristics, seminiferous epithelium and two-dimensional maps electrophoretic seminal plasma of sheep New Address." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5908.
Full textInformaÃÃes sobre aspectos fisiolÃgicos reprodutivos da raÃa Morada Nova, especialmente para os machos, ainda sÃo escassas e a falta destes conhecimentos torna-se um empecilho para aplicaÃÃo de melhores estratÃgias de manejo e biotÃcnicas reprodutivas. Baseado nisto, este estudo teve como objetivos descrever as caracterÃsticas biomÃtricas do aparelho reprodutivo em ovinos Morada Nova e os aspectos quanti-qualitativos da espermatogÃnese e correlacionÃ-los, bem como caracterizar os mapas eletroforÃticos das proteÃnas do plasma seminal destes animais. Foi realizada coleta de sÃmen, por meio de eletroejaculaÃÃo em 15 ovinos da raÃa Morada Nova, dos quais apenas 12 responderam. As amostras de sÃmen foram centrifugadas para separaÃÃo do plasma seminal, onde este foi utilizado na determinaÃÃo da concentraÃÃo protÃica total e do perfil protÃico atravÃs de eletroforese desnaturante em gel de poliacrilamida (SDS-PAGE). Os dados biomÃtricos foram obtidos a partir dos testÃculos, epidÃdimos e das glÃndulas sexuais acessÃrias do grupo de 15 animais que foram abatidos com idade mÃdia de 42 semanas e peso vivo mÃdio de 28 kg. Imediatamente antes do abate, foi tomada a medida de circunferÃncia escrotal (CE) de cada animal. Em seguida, os testÃculos, epidÃdimos e glÃndulas sexuais acessÃrias foram pesados e mensurados individualmente (direito e esquerdo). Amostras dos testÃculos foram fixadas em fluido de Bouin para avaliaÃÃo dos tÃbulos seminÃferos. O parÃnquima testicular foi avaliado quanto ao diÃmetro (DT), volume (VT) e comprimento dos tÃbulos seminÃferos, altura do epitÃlio germinativo (AE) e populaÃÃo de cÃlulas de Sertoli e germinativas. A proporÃÃo do parÃnquima testicular ocupado por tÃbulos seminÃferos foi o equivalente a 84,8  0,1%. O rendimento geral da espermatogÃnese foi de 59,8  3,73 cÃlulas. Cada cÃlula de Sertoli (CS) foi capaz de sustentar 7,7  0,51 espermÃtides arredondadas. Foram realizadas anÃlises de correlaÃÃo de Pearson (p < 0.05) entre as caracterÃsticas estudadas e as variÃveis foram descritas na forma de mÃdias e respectivos erros-padrÃo atravÃs do programa estatÃstico StatView, 5.0 (SAS, 2003). Nenhuma diferenÃa foi detectada entre os valores direito e esquerdo para nenhum dos parÃmetros testiculares, epididimÃrios ou das glÃndulas sexuais acessÃrias. CorrelaÃÃes significativas foram verificadas entre peso e as demais medidas testiculares: comprimento (CT), diÃmetro (DT) e volume do parÃnquima (VPar) e outras medidas do aparelho reprodutor como peso (PEp) e comprimento total (CEp) do epidÃdimo e comprimento do corpo do epidÃdimo (CCorpEp). O peso e diÃmetro testicular, mostraram-se indicadores da funÃÃo reprodutiva do carneiro estando correlacionado com todas as variÃveis histolÃgicas descritas. Com relaÃÃo à anÃlise eletroforÃtica bidimensional, um total de 103 spots foram identificados, estando 45 destes presentes em todos os gÃis, os spots presente indicam a presenÃa de proteÃnas importantes do plasma seminal. De acordo com os resultados obtidos, as medidas das gÃnadas apresentaram correlaÃÃes com as demais estruturas do trato reprodutivo e atividade espermatogÃnica, e os mapas eletroforÃticos do fluido seminal mostraram-se semelhantes aos de ovinos Santa InÃs adultos.
Information on the reproductive physiological aspects about Morada Nova breed, especially for males, are still few and the lack of knowledge about that becomes a hindrance to implementation best management strategies and reproductive biotechnologies, based on this, this study aimed to describe the biometric characteristics of the reproductive tract in Morada Nova sheep as well as quantitative and qualitative aspects of spermato genesis and correlate them, and to characterize the electrophoretic maps of the seminal plasma of these animals. Semen was collected by electroejaculation in 15 male sheep of the Morada Nova breed, of which only 12 responded. The samples were centrifuged, for separation of seminal plasma , where it was used to determine of total protein concentration and protein profile by denaturing electrophoresis in polyacrylamide gel (SDS - PAGE). Biometric data were obtained from the testicles, epididymis and accessory s ex glands of the group of 15 animals that were slaughtered with an average age of 42 weeks and average weight of 28 kg. Immediately before slaughter, was taken to measure scrotal circumference (SC) of each animal . Then , the testicles, epididymis and access ory sex glands were weighed and measured individually (left and right). Testicles samples were fixed in Bouin's fluid for evaluation of seminiferous tubules. The testicular parenchyma was evaluated for diameter (TD), volume (VT) and length of seminiferous tubules, germinal epithelium height (EA) and a population of Sertoli cells and germinal cells. The proportion of testicular parenchyma occupied by seminiferous tubules was equivalent to 84.8 Â 0.1%. The overall yield of spermatogenesis was 59.8 Â 3.73 cell s. Each Sertoli cell (SC) was able to sustain 7.7 Â 0.51 round spermatids. Were realized analyses using Pearson correlation (p <0.05) between the studied characteristics and the variables were described as means and their respective standard errors using t he statistical program Statview, 5.0 (SAS, 2003). No difference was detected between the left and right values for any of the testicular parameters, epididymal and accessory sex glands. Significant correlations were found between weight and other measures testicle: length (TL), diameter (TD) and volume of parenchyma (VPAR) and other measures of reproductive tract as weight (PEP) and total length of the epididymis (TLE) and of body of the epididymis (LBEp). The testicular weight and diameter, were indicators of the reproductive function of the ram was correlated with all histologic described. For electrophoresis analysis, a total of 103 spots were identified, 45 these being present in all gels, and these spots presents in gel indicate the presence of importan t proteins in the seminal plasma. According to the results, measures of gonads showed correlations with the other structures of the reproductive tract and spermatogenic activity, and electrophoretic maps of seminal fluid were similar to Santa InÃs sheep ad ults.
Kindler, Lars Verfasser], Hélène [Akademischer Betreuer] Esnault, Phung Ho Hai [Akademischer Betreuer], and Alexander [Akademischer Betreuer] [Beilinson. "Regular singular stratified bundles in positive characteristic / Lars Kindler. Gutachter: Phung Ho Hai ; Alexander A. Beilinson. Betreuer: Hélène Esnault." Duisburg, 2012. http://d-nb.info/1029288453/34.
Full textLin, Hui-Yen, and 林慧燕. "The Correlations among Work Place Characteristics,Job Congruence and Turnover Intention of Hair Salon Assistants." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/10852130952248247144.
Full text中國文化大學
生活應用科學研究所
97
Abstract The objectives of this research were to study the correlations among work place characteristics, job congruence and turnover intention of hair salon assistants. The assistants from four large hair salon chain stores located in Taipei area were selected for test. Those who met with the terms of purposive sampling were followed by the questionnaire survey. Among 450 questionnaires, 419 were effective, it means 93% effective. The research instruments consisted of 3 designed measurable scales – work place characteristics scale, job congruence scale and turnover intention scale. All collected data were statistically analyzed by percentage, means, t-test, one-way ANOVA, Pearson covariance correlation analysis, and multiple regression using SPSS. The results of hypothesis testing are as follows: 1. Current status of “individual background variables” Assistants of female, school-industry cooperation, age of 19 to 20, and high school or vocational school with related majors were higher than those of male, general school, other ages and other educations. Assistants’ positions are mostly in middle level. Moreover, total working duration and average monthly salary of the assistant-level employees were 3- 4 years and NT $10,001- 15,000, respectively. The insufficient average monthly salary was shown in the scale of salary. 2. Differences between “individual background variables” from work place characteristics” The distinguished differences of work place characteristics were observed for the individual background variables, including sex, education, student types, positions, total working duration, and average monthly salary. 3. Differences between “individual background variables” from “job congruence” The distinguished differences of job congruence were shown for the individual background variables, including age, education, student types, related majors, positions, total working duration, working years in this salon and average monthly salary. 4. Differences between “individual background variables” from “turnover intentions” The distinguished differences of turnover intention were calculated for the individual background variables, including sex, positions, total working duration and average monthly salary. 5. There are correlations between “work place characteristics” and “job congruence” The assistants with higher evaluation to work place characteristics have the higher job congruence . 6. The prediction of “work place characteristics” and “job congruence” to “turnover intention” (1)The job functions, work partners, salary, satisfaction at interrelations with others and self-fulfillment of work place characteristics have obvious prediction to turnover intention. (2)The satisfaction at interrelations with others and self- fulfillment of job congruence could obviously predict turnover intention. (3)The higher the awareness of work place characteristics and job congruence is, the lower turnover intention is. The turnover intention could be effectively predicted by both work place characteristics and job congruence.
Sýkorová, Kateřina. "Vztah mezi vlasovými charakteristikami a osobností u člověka." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-354586.
Full textKladt, Nikolay [Verfasser]. "Neurobiology and modeling of cuticular hair sensilla of scorpions : response characteristics and implications for biomimetic design / vorgelegt von Nikolay Kladt." 2008. http://d-nb.info/989563502/34.
Full textSonthalia, S., A. Priya, and Desmond J. Tobin. "Demographic characteristics and association of serum Vitamin B12, ferritin and thyroid function with premature canities in Indian patients from an urban skin clinic of North India: A retrospective analysis of 71 cases." 2017. http://hdl.handle.net/10454/12132.
Full textBackground: The incidence of self-reported premature hair graying (PHG) seems to be on the rise. PHG has a profound impact on the patient's quality of life. It remains an incompletely understood etiology with limited and modest treatment options. Aim: The evaluation of the demographic and clinical profile of patients with premature canities, and exploration of the association of this entity with certain systemic disorders suspected to be related to its etiology. Methods: Seventy-one cases of premature canities (onset noticed by patients before 25 years of age) presenting to an urban skin clinic in Gurugram, India, between September 2012 and September 2015 with this complaint were retrospectively analyzed. The patient records were retrieved that provided details of the onset, duration and pattern of involvement, history, and examination findings (scalp, cutis, and general physical). Since all these patients had been screened for anemia, thyroid disorder, fasting blood glucose, and Vitamin B12 levels at the time of presentation, these parameters were also available for analysis. Results: The mean age at onset of graying was 10.2 ± 3.6 years (range: 5–19 years), with an almost equal gender distribution. The earliest age of onset recorded was 5 years. A positive family history of PHG (at least one of the biological parents or siblings) was obtained in 64 (90.1%) of the cases. The temporal regions of the scalp (35.2%) were most commonly involved followed by the frontal region (18.3%). Hypovitaminosis B12 and hypothyroidism showed significant association with the disorder, whereas anemia, serum ferritin, and fasting blood glucose did not. Conclusion: The age of onset of hair graying can be as low as 5 years. Temporal and frontal areas are the most commonly involved sites. A strong family history, Vitamin B12 deficiency, and hypothyroidism are strongly associated with PHG. Larger case–control studies are mandated for discerning the correlation of these and other risk factors with PHG.
Kuhn, Rachel Anne [Verfasser]. "Comparative analysis of structural and functional hair coat characteristics, including heat loss regulation, in the Lutrinae (Carnivora: Mustelidae) / Rachel Anne Kuhn." 2009. http://d-nb.info/992906598/34.
Full textHsieh, Zhi-Yu, and 謝治宇. "Study on hydraulic characteristics of Hsin Hai Bridge constructed wetland." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/91838629881653787172.
Full text逢甲大學
水利工程與資源保育研究所
98
Constructed wetlands were widely applied for water purification, ecosystem and landscape rehabilitation, flood mitigation and so on. Urban sewer systems are planning and constructing, hence properly designed, constructed, maintained and managed wetlands can provide very efficient treatment of animal wastewater. Accordingly, constructed wetlands for removing contaminants are frequently established at floodplain or upland within stream corridor; and water quality improvement throughout overland flows and vegetations is significant. No matter which kind of wetlands would be surely functioned well, two main methodologies are necessary to study: hydrology-driven approach and ecology-driven approach. The ecosystem could be a sign for wetlands’ healthy, and also be an important disturbance factor for hydrology-driven regime in constructed wetlands. Besides, hydraulic efficiency of treatment constructed wetlands is an important factor. This study applies tracer test to analyze hydraulic retention time and short-circuiting which could be an important reference for maintenance and improvement of constructed wetlands.Furthermore, SMS model is adopted to simulate the dead-zone, flow field and improvement from modification.
Wu, Hsin-Lei, and 吳欣磊. "A Study on the Influence of the Spatial Characteristics Change of Dong Hai Bie Shu Shopping District on the Genius Loci." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/69gmzd.
Full text東海大學
景觀學系
105
Donghai bie shu shopping district awards recognition to its outstanding living environment in the early years, but along the development during these years it does not seem to be a comfortable place to live as the early years. This research is about using the perspective of user at Donghai bie shu shopping district to find out how the changing of Donghai bie shu shopping district affects genius loci in two parts, directionality, outward and use value. The first theory concept is from the interpretation that Christian Norberg-schulz make to genius loci, which directionality and outward decide the environmental characteristics. The second theory concept is from the idea Martin Heidegger announced, the relation between user and object. According to these two opinions, literature reviewing, field observing and interviewing with the questionnaire from qualitative research show that Donghai bie shu shopping district is influenced of the building cortex and the values of users, which affected the preferences of the users of Donghai bie shu shopping district. The study result shows the difference of what it express to people between the early years and now at Donghai bie shu shopping district. Image at Donghai bie shu shopping district tend to be shops, stores, stalls, advertisement bars and elements which build more connection with the user at Donghai bie shu shopping district and so does the features of unsegment. Compare the further with the recent situation at Donghai bie shu shopping district shows that decreasing of characterize may cause the users at Donghai bie shu shopping district hard to aware the genius loci.