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 200 for “"isotope analysis"”.
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Stable isotope analysis: a new forensic science tool
The principle behind forensic analysis is to acquire information previously unknown, or to corroborate information available on either a samples' origin, or a comparative analysis. Conventional analytical techniques used in the analysis of forensic chemical samples include Gas and Liquid …
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The Application of Quadrupole Mass Spectrometry to Nitrogen Isotope Analysis
Made available in DSpace on 2014-12-10T23:02:05Z (GMT). No. of bitstreams: 1 7511577.pdf: 2340967 bytes, checksum: c4a39fcb58a0915e9fbe40e88285caa5 (MD5) Previous issue date: 1974
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Global coal ball stable isotope analysis to define permineralizing environments
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-08-01
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Estimating Trophic Position of Lake Oahe Walleye Using Stable Isotope Analysis
… are sampled infrequently. I used stable isotope analysis to estimate walleye trophic position and then compared these values to trophic position estimates from diet content analysis for fish sampled from May 2001 to May 2002. Trophic position estimates generated by isotopes were not …
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Exploring Social Identity through Stable Isotope Analysis in the Kellis 2 Cemetery
… variation existing throughout the empire. Stable isotope analysis has the potential to reveal variability in lived experience of past peoples by acting as a proxy for behavior that can be analyzed from bone. Such an approach has been applied on individuals from the Romano-Christian Kellis 2 …
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Multi-isotope analysis and the reconstruction of prey species palaeomigrations and palaeoecology
This thesis explores the use of multi-element isotope analysis and intra-tooth sampling to reconstruct prey species ecology and biogeography. Modern caribou (Rangifer tarandus ssp.) and bison (Bison bison) from North America are used to assess the relationship between known lifetime movements and …
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Differential Thermal Isotope Analysis: A Method for the Study of Past Climates
… out developing the online Differential Thermal Isotope Analysis (DTIA) method, including demonstrations of the method on gypsum samples and clay samples, and the application of DTIA to the ongoing research into climate conditions during the Paleocene-Eocene Thermal Maximum (PETM). Measurements …
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Flight feather moult patterns and stable isotope analysis in the Woodland Kingfisher
… of the Woodland Kingfisher, I measured stable isotope ratios of carbon (δ 13C), nitrogen (δ 15N) and hydrogen (δ 2H) in primary (P1), secondary (S1) and tail (R1) feathers from birds caught in Ghana, South Africa and Uganda between 2015 and 2018 during the respective breeding seasons. Feather δ …
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Exploring Diet and Society in Medieval Spain: New Approaches Using Stable Isotope Analysis
… thesis employs carbon (δ13C) and nitrogen (δ15N) isotope analysis to explore variability in diet and resource exploitation between faiths, localities and through time under Muslim and later Christian rule and places the isotopic data in the context of other historical and archaeological evidence. …
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Investigating trophic interactions between parasites and their marine fish hosts using stable isotope analysis
… host-parasite interactions using stable isotope analyses on a broad range of marine fish hosts and their associated copepod and monogenean gill parasites. The study also provides insight into the gill parasite diversity of a number of host species from South African marine waters. …
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Evolution and ecology of C4 grasses: insights from carbon isotope analysis of grass pollen grains
… this limitation by utilizing Single Pollen Isotope Ratio AnaLysis (SPIRAL), a technique that reliably distinguishes C4 from C3 grasses in the fossil record via δ13C values of individual pollen grains. Before applying the technique to fossil samples, I refined the original SPIRAL method by …
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The foraging ecology of minke whales (Balaenoptera acutorostrata) in Northeast Scottish waters using stable isotope analysis
… muscle tissue from their putative prey, stable isotope analysis was conducted to derive δ13C and δ15N values. The aims of this thesis were to: (i) determine the contribution of known prey species to the diet of minke whales in Northeast Scotland and assess prey preferences between adult and …
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Diet at medieval Alytus, Lithuania: Stable carbon and nitrogen isotope analysis of bone and dentin collagen
… in particular. Until now, little stable isotopic analysis has been utilized to assess diet in this region during this time period. The aim of this study was to undertake a preliminary assessment of the composition of diet at late medieval Alytus (late 14th to early 18th centuries) from bone (N=35) …
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Petrographic and strontium isotope analysis on rare earth element bearing minerals in Hicks Dome, Southern Illinois
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Population Parameter Estimation and Stable Isotope Analysis of Gulf Sturgeon (Acipenser oxyrinchus desotoi) in the Pascagoula River
… and describing feeding habitat by stable isotope analysis for GS natal to the Pascagoula River. Pascagoula River GS were captured with anchored gill nets, tagged, and had blood and muscle samples taken between April–November from 2013–2020. Mark-recapture modelling revealed a steadily …
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Microscopic Sampling of Dentine and Bone Collagen: Development of Sampling Methods for Carbon and Nitrogen Isotope Analysis
… throughout that time. As the technology for isotope ratio mass spectrometry analysis improves, the sampling methods should improve as well. This research focused on developing a new incremental dentine collagen sampling method and bone collagen microsampling method for stable isotope …
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Microscopic Sampling of Dentine and Bone Collagen: Development of Sampling Methods for Carbon and Nitrogen Isotope Analysis
… throughout that time. As the technology for isotope ratio mass spectrometry analysis improves, the sampling methods should improve as well. This research focused on developing a new incremental dentine collagen sampling method and bone collagen microsampling method for stable isotope …
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Stable isotope analysis as an indicator of tree and grass rooting depth in a mesic African savanna
… cover and analysed by means of carbon nitrogen isotopes. While δ¹⁵N showed little pattern due to complexities in the fractionation process, δ¹³C revealed that tree and grass rooting depths did not adhere to separate niches as proposed by Walter (1971). Root material from both growth forms …
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Using Water Budgets and Isotope Analysis to Explore Water Availability in Low Flow Conditions: Hartley Pond Case Study
… June, July, and August 2023. Accompanying stable isotope analysis of stream, pond, and groundwater samples refined elements of the water budget. Results from the water budget show that inputs into Hartley Pond are dominated by streamflow. Isotope analysis supports the finding that evaporation …
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