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 5 of 5 for “"Isotopic depletion"”.
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Numerical stability of Monte Carlo neutron transport and isotopic depletion for nuclear reactor analysis
Coupling Monte Carlo neutron transport with isotopic depletion is known to produce non-physical results for large reactor geometries. This thesis begins with a survey of the stable methods used to avoid this and highlights some of their drawbacks. Chapter 2 introduces the known phenomenon of …
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Caracterização geoquímica e paleoambiental do cretáceo inferior da Bacia de Camamu, Bahia
… hydrogen indices, together with the strong ¹³C isotopic depletion reflect a medium to low primary productivity and a intense recycling of carbon through the degradation of organic matter by anaerobic bacteria. Aratu and Buracica sediments were deposited in a broad and shalower lake with fresh to …
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Determining the Trophic Role of Red Snapper (Lutjanus campechanus) in Mississippi State Waters Using Stomach Content and Stable Isotope Analysis
… POM δ<sup>15</sup>N values showed unusual isotopic depletion during the summer months of 2016 and 2017. Stomach content analysis indicated shifts in red snapper diet between 2016 and 2017, with stomatopods and gastropods being the most abundant collected prey items in each year, …
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An Investigation of the Geochemistry and Hydrogeology of the Queen Charlotte Fault
… by meteoric water, or some currently unknown isotopic depletion process. Strontium isotopes reveal a non-radiogenic strontium signature at depth, suggesting basalt-fluid interaction and/or a diagenetic overprinting of sedimentary ash alteration. Fluids collected from CTD casts in the southern …
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Nitrogen isotopes in chlorophyll and the origin of Eastern Mediterranean sapropels
… and δl3C as proxies for the nitrogen and carbon isotopic composition of marine phytoplankton; and (3) to use chlorophyll nitrogen isotopic ratios to understand the origin of Late Quaternary Eastern Mediterranean sapropels. Techniques are presented for the determination of chlorin nitrogen and …