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 185 for “"Human Skin"”.
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Comparative histology of human skin.
… technique and picrosirius-polarization. (ii) Skin samples from embalmed cadaveric tissue from human cadavers were compared against samples taken from surgical patients. (iii) Skin samples were studied from different regions of the body to assess if dermal structure correlates with scarring …
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Human skin optical properties and autofluorescence decay dynamics
Human skin is an optical organ which constantly interacts with light. Its optical properties are fundamental to understanding various effects of light-tissue interaction inhuman skin and to laser applications in medicine and biology. The aim of this thesis was to test two hypotheses: (1) that skin …
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Dendritic Cells in Normal and Inflamed Human Skin
<p>Psoriasis is a skin disease originally thought to be a primary keratinocyte differentiation and maturation disease. Several T cell targeted theraputics were found to reverse disease, and thus subsequent research has focussed on the adaptive immune system, particularly effector CD8+ T cells …
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Does the human skin microbiome adapt to antibiotic exposure?
… is a substantial element of the healthy human skin microflora and can become pathogenic to cause infections, for example, septicaemia and endocarditis. The effects of long-term sub-lethal exposure to antibiotics on the skin microbiota are unknown. How does antibiotic adaptation affect the …
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The damaging potential of pesticide formulations on human skin
… of pesticide entry into the body. Impairment of skin barrier function may increase systemic exposure and toxicological risk. This project examines barrier function impairment of human skin in vitro due to commercial liquid formulations of the pesticides pirimphos methyl and pirimicarb. Water …
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High frequency ultrasonic characterization of human skin In vivo
… to penetrate several millimeters into the skin and provide information at a spatial resolution of tens of microns. However, conventional B-scan images of skin tissues often lack the capability to characterize and differentiate various skin tissues. In this work, quantitative ultrasonic …
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Frequency response of human skin in vivo to mechanical stimulation
The frequency-dependent response of human skin was measured, in vivo, to mechanical stimulation at a scale useful in the development of tactile displays. Sinusoidal vibration stimuli of varying frequencies and amplitudes were applied with a flat-ended 0.5 mm diameter cylindrical probe under two …
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The Effects of Radon and its Progeny on Human Skin Cells
… lung cancer, therefore its potential role in skin carcinogenesis is of interest, as Southwest England also has high skin cancer incidence. A novel radium-226 flow-through apparatus was employed to dissolve radon and its progeny into cell media. Cultured human skin fibroblasts (84BR), squamous …
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Ultraviolet a irradiation on human skin : nitric oxide mediated cardiovascular responses
… photolysis of 7-dehydrocholesterol in the skin to produce 1,25 dihydroxycholecalciferol (Vitamin D). UVB is however a potent skin carcinogen, and calculating risk-benefit ratios for exposure will be important. We believe that independently of vitamin D, nitric oxide plays an important role …
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Skin strain analysis software for the study of human skin deformation
Skin strain studies have never been conducted in a precise and automated fashion. Previous in vivo strain investigations have been labor intensive and the data resolution was extremely limited such that their results were largely qualitative. There is a need for a better system to collect, compute, …
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An investigation into the cellular mechanisms underlying photodynamic rejuvenation in human skin
… is a novel therapy used to treat the signs of skin ageing. It is a promising dermatological therapy due to its less severe side effects and superior results when compared to other chemical treatments. This therapy involves the topical application of a photosensitizing drug (PS) which is …
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Testing and Analysis of the Peeling of Medical Adhesives From Human Skin
The analysis of peeling tape or a bandage from skin is a challenging problem. Skin is a very complex material made of many layers with anisotropic material properties. Adhesives that bond tapes or patches to skin must attach to skin through moisture and skin movement, but then be removed with …
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On the deformation of human skin for mechanical counter pressure space suit development
… bulky and stiff to operate or require unnatural human motion. Development of mechanical counter pressure (MCP) space suits can change the current space suit design paradigm. The primary goal of this thesis is to develop methodology to quantify strain and deformation of human skin to inform how to …
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Transcriptomic and Proteomic Studies of Intercellular Communication Between Melanocytes and Keratinocytes in Human Skin
… and provide the barrier function of the skin. Interspersed amongst the keratinocytes in the basal layer of the epidermis are melanocytes, the pigment producing cells of the epidermis. Melanocytes produce melanin pigment which resides in melanosomes, organelles that are transferred to …
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Protective Effects of Milk Phospholipids Against UV-Induced DNA Damage in Human Skin Cells
<p>Skin cancer is the most common type of cancer in the US. The American Academy of Dermatology estimated that more than 3.5 million new cases of skin cancer are diagnosed in the US each year and 1 in 5 Americans will likely to develop skin cancer in their life time. Most cases of skin cancer are …
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Investigating the by-stander effect of Hypericin induced photodynamic therapy on human skin cells
Skin cancer is the most common cancer worldwide, and its incidence rate in South Africa is increasing. Photodynamic therapy (PDT) has been shown to be an effective treatment modality, through topical administration, for treatment of non-melanoma skin cancers. Our group investigates …
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Distribution of mutant cells in human skin : exploration of the fetal-juvenile mutability hypothesis
… the complex process of cancer development in humans. In the case of skin cancer, epidemiological and molecular data clearly indicate that sunlight is a carcinogen, the primary cause of skin cancer, in which forms of point mutation are associated with ultraviolet radiation. Furthermore, …
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