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 8 of 8 for “"Calcified tissues"”.
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Stable carbon isotopes in deep time : the diets of fossil fauna and hominids
… of years in time,. using the mineral phase of calcified tissues (apatite) as alternative sample material to collagen. The results reported here provide empirical evidence for the validity of the technique. Investigation of the isotopic relationships between diet, collagen and apatite, using a …
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Early Osteoarthritis: A multi-scale structural and mechanical investigation
… been used to study the changes in the cartilage, calcified cartilage, and subchondral bone during the early stages of the development of the disease osteoarthritis (OA). The bovine patella was first validated as a model for intact human cartilage. The bovine patella exhibited proliferative and …
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An investigation into Manganese(2+) interferences and retrospective dose assessment of shelled species using EPR spectroscopy
High intensity Mn²⁺ peaks in calcified tissues of shells are known to impact the lower dose detection limit in retrospective electron paramagnetic resonance (EPR) studies. This thesis investigates the factors causing Mn²⁺ accumulation in shells including crystalline structure and animal habitat. …
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Towards low dose retrospective dosimetry on shelled species
This work investigates calcified tissues of shelled species for retrospective dosimetry using electron paramagnetic resonance (EPR) spectroscopy. To determine applicable samples for low dose studies, shells of crustacean and mollusc species were irradiated to 10 Gy using a 137Cs source. Reference …
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Stable isotope analysis of fauna and soils from sites in the Eastern Free State and Western Lesotho, Southern Africa : a palaeoenvironmental interpretation
… the ¹³C/¹²C ratios of carbon extracted from the calcified tissues of grazers and soil organic matter recovered from within an archaeological context, a palaeoenvironmental sequence has been reconstructed for the study area for the last 13 500 years. Results have shown that although C₄ grasses …
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Flúor í íslenskum hrossum
… high levels of fluoride, accumulate fluoride in calcified tissues of the body, and are in danger of developing either acute or chronic symptoms of fluoride toxicity. The objective of this study was to provide background levels of fluoride concentration in the Icelandic horse and estimate whether …
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Characterization of native and bypass human coronary artery plaque deposits from the same heart: investigation of the chemical form of calcium in human coronary artery plaque deposits
… elements probably exist as hydroxyapatite in the calcified tissues. However, the molar ratio of Ca/P in the soft tissue suggests that the phosphorus does not only exist as hydroxyapatite but that at least half of it may also be organic. The 13C and 31P solid-states NMR spectra of the native and …
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A Solid State NMR Investigation of Poly (ADP-ribose) and Its Involvement in Tissue Calcification
… of solid state NMR to study biomineral in tissues is that it can be used on samples that are more or less in native state, without extensively dehydrating the tissue or removing the organic layers. However, in order to gain a holistic picture of the mineral at nanoscopic level, the …