Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 50 for “"human hair"”.
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Damage assessment of human hair by electrophoretical analysis of hair proteins
… of the damage induced by cosmetic processes on human hair is very important for the cosmetic industry, constituting the first step to prevent hair deterioration and to develop new products. The electrophoretical fractionation (SDS-PAGE) of hair proteins leads to a specific electrophoretical …
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Identification of Tobacco-Related Compounds in Tobacco Products and Human Hair
… used to distinguish products by tobacco type. Hair is a common type of evidence in forensic investigations, and it is often subjected to mitochondrial DNA (mtDNA) analysis. Preliminary data was gathered on potential “lifestyle” markers for smoking status as well as any indications of subject …
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Modification of the human hair: modulators of melanogenesis as agents of colour changing
… in vitro de melaninas numa linha celular humana pigmentada. De entre 1200 fármacos com perfil toxicológico bem definido e longo historial de uso seguro em humanos, 23 fármacos apresentaram efeitos significativos. Os quatro com propriedades pro- ou anti-melanogénicas mais acentuadas foram …
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Characterization of Meta-Keratin Biomaterials Derived from Human Hair: Applications for Fiber Development
… Among these, keratin biomaterials derived from human hair have been used for a variety of biomedical applications due to their intrinsic biocompatibility and ability to regulate cellular behavior. The main objective of this dissertation work was to test the effect of increased surface area on …
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Development of a novel, clinically-relevant model for investigating factors that stimulate human hair growth
Lack of hair due to alopecia or skin grafting procedures causes significant distress due to hair's role in social and sexual communication. Only limited pharmacological agents are currently available to stimulate hair growth; their development is hampered by inappropriate model systems. Most …
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Towards a Better Physical Understanding of Human Hair: Development of Fiber Tribology-Methods at the Micro- and Nanoscale
Die Zielsetzung dieser Arbeit ist die Weiterentwicklung verschiedener physikalischer Messmethodiken zur Untersuchung von Mikrofaseroberflächen. Das zugrunde liegende System hierbei hat das Augenmerk auf die Veränderungen der Oberflächen von Haaren durch applizieren mit unterschiedlichen …
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Factors associated with the bioaccumulation of mercury in human hair following consumption of fish from the Great Lakes region
… in the environment, an increase in potential human health risks arises from exposure to different media. The Great Lakes region, for instance, is an area of known mercury pollution. This project examines the relationship between fish consumption of a sensitive human population and the …
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The Potential of Bulk and Amino-Acid Specific Isotope Ratio Mass Spectrometry of Human Hair in Forensic and Clinical Applications
… This research explores the use of IRMS of human hair for clinical and forensic applications.Several sample introduction methods are now available for commercial isotope ratio mass spectrometers. Combustion is most commonly used for bulk isotopic analysis, whereas gas and liquid …
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Unravelling novel molecular targets for photobiomodulation in human hair follicle towards the development of more effective light-based therapies for hair growth
… rise of commercial devices for management of hair growth, where all of them are based on low levels of light resulting into photobiological, non-thermal interaction of photons with cells, a process that recently has received an official term ‘photobiomodulation’. However, the design and …
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The role of the SWI/SNF ATP dependent chromatin remodelling complex in the regulation of the human hair follicle cell proliferation and control of the human cutaneous wound healing
… terminal epidermal differentiation in mice and humans and for hair follicle stem cell activation during mouse hair follicle regeneration and cutaneous wound healing. However, the role of SWI/SNF complexes in human hair growth and wound healing remain unknown. Here it is demonstrated that genes …
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Techniques for monitoring human exposure to airborne trace metals
… explores the techniques employed for monitoring human exposure to airborne trace elements in urban atmospheres using trace metal analysis of human hair.
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Evaluating the impact of ultraviolet light on chemical and mechanical properties of human scalp hair through controlled and natural experiments
Introduction: Human hair fibres have been studied in a variety of fields for different applications. Examples include the use of hair as a medical testing substrate for diagnosis of pathologies, as a tool for forensic investigations, a substrate for cosmetic product development and as a precursor …
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Regeneration of Peripheral Nerves Using Neuroinductive Biomaterial Scaffolds
… The second strategy introduces keratin made from human hair as a promising, neuroinductive biomaterial for use in neural regeneration. Keratin biomaterials were found to be highly biocompatible and able to promote Schwann cell adhesion, proliferation and migration. Implantation of a keratin …
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The roles of hepatocyte growth factor family members in androgen-regulation of human hair growth. A comparison of the expression of hepatocyte growth factor family members, HGF and MSP, and their receptors, c-Met and RON, in isolated hair follicles from normal and androgenetic alopecia (balding) scalp.
Androgens are the main regulators of human hair growth stimulating larger, terminal hair development e.g. beard and causing scalp balding, androgenetic alopecia. Hair disorders cause psychological distress but are poorly controlled. Androgens probably act by altering regulatory paracrine factors …
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Investigations into the roles of potassium channels in hair growth. Studies confirming the presence of several ATP-sensitive potassium (K+ATP) channels in hair follicles and exploring their mechanism of action using molecular biological, cell culture, organ culture and proteomic approaches.
Hair disorders cause significant distress. The main, but limited, treatment for hair loss is minoxidil, an ATP-sensitive potassium (KATP) channel opener whose mechanism of stimulation is unclear. The regulatory component of KATP channels has three forms: SUR1, SUR2A and SUR2B which all respond to …
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Fabrication, Characterization and Cellular Interactions of Keratin Nanomaterial Coatings for Implantable Percutaneous Prosthetics
… be to mimic an interface already found in the human body, the fingernail-skin interface, which is infection-free and mechanically stable. The same keratins that make up the cortex of human hair fibers are found in the fingernail. These cortical human hair keratins can be extracted and purified, …
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Cosmetic research study: Bridging material science with social inquiry
… by bridging materials science methodologies for hair investigation with social scientific inquiry into lived experience, identity, and wellbeing. While human hair has been extensively investigated as a keratin-based composite fibre with measurable mechanical and physicochemical properties of …
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Heat induced denaturation of fibrous hard alpha-keratins and their reaction with various chemical reagents
… of this class being the alpha-keratins in human hair. In spite of a lot of work in the field, there is still no mechanism proposed for accounting on how thermal denaturation process occurs in hard alpha-keratins. This work aims at proposing a model for the alpha-keratin fibres and a …
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Mesomatters - design, manufacture and interact with architected mesoscopic materials
… and macroscopic length scale. It is the scale of human hair or a grain of sand. It is the scale where material properties meet human perception, and the rational meets intuition. In the past 10 years, additive manufacturing, especially 3D printing, has enabled designers to directly manipulate …
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