Nitrogen Isotope
Effects of Cross Linking on the Chromatographic Nitrogen Isotope Separation
... Three different percent cross linking resins were per- formed for nitrogen isotope separation. The chroma- tographic concentration curve and isotopic enrichment profile of 20% cross linking resin as an ...
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Nitrogen isotope fractionation in protoplanetary disks
... We simulate the nitrogen isotope chemistry in a set of protoplan- etary disk models with the thermochemical code DALI (Dust and Lines; Bruderer et al., 2012; Bruderer, 2013). Given a two- dimensional, ...
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The Carbon and Nitrogen Isotope Characteristics of Type Ib-IaA Cuboid Diamonds from Alluvial Placers in the Northeastern Siberian Platform Dmitry Zedgenizov 1,2 *, Vadim Reutsky 1and Michael Wiedenbeck3
... of nitrogen isotope composition towards light values is attributed to peridotite paragenesis ...stable isotope data obtained on diamonds from worldwide sources, Hogberg et ...and nitrogen in ...
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Strong correspondence between nitrogen isotope composition of foliage and chlorin across a rainfall gradient: implications for paleo reconstruction of the nitrogen cycle
... continuous-flow isotope ratio mass spectrometer (EA–IRMS) at the Univer- sity of California, Davis Stable Isotope ...20 isotope ratio mass spectrometer (Sercon ...20-20 isotope ratio mass ...
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Nitrogen isotope ratios identify nitrate contamination sources
... 615Nconcentratlonswlth depth for Inorganic fertilizer, animal feedlot, septic tank on-site sewage disposal and natural soil organic matter sites In the Davis area southern Sacramento Val[r] ...
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Nitrogen isotope abundance measurements
... the nitrogen isotopes in several sources of nitrogen have been ...atmospheric nitrogen the absolute ratio, N 14 /N 15 , is ...the nitrogen isotopes of the atmosphere was constant, to 1 part in ...
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Determination of Subsurface Nitrogen Contamination using Tree Leaves and Stable Nitrogen Isotope Ratios.
... The most prevalent species on site are evergreens (Pinus taeda) and deciduous (Liquidambar styraciflua, Quercus alba, Quercus rubra, Quercus nigra) trees. In June of 2009, a targeted sampling event focused on selected ...
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Distribution and rates of nitrogen fixation in the western tropical South Pacific Ocean constrained by nitrogen isotope budgets
... Frank, I., Bode, A., Bonnet, S., Boström, K. H., Böttjer, D., Capone, D. G., Carpenter, E. J., Chen, Y. L., Church, M. J., Dore, J. E., Falcón, L. I., Fernández, A., Foster, R. A., Fu- ruya, K., Gómez, F., Gundersen, K., ...
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The Diet Composition and Trophic Position of Introduced Prussian Carp Carassius gibelio (Bloch, 1782) and Native Fish Species in a Turkish River
... dried at 60°C for 24 hours and and homogenized with a microdismembrator-U (2 min at 1500 rpm) or a mortar and pestle into a fine powder in preparation for isotopic analysis. SIA of samples from fish muscle and from the ...
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Differential contributions of NO3−/NH4+ to nitrogen use in response to a variable inorganic nitrogen supply in plantlets of two Brassicaceae species in vitro
... carbon isotope tracer applied in our previous work has been successfully used to quantify the proportion of microalgal inorganic carbon utilization [42], we used two labeled stable nitrogen isotope ...
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Carbon and nitrogen stable isotope ratios can estimate anionic polyacrylamide degradation in soil
... For isotope ratio analysis, 2 mg ± 10% soil samples were weighed and placed into tin ...and nitrogen isotope ratios of each sample were determined on a Finnigan- MAT Delta S isotope ratio mass ...
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Onset of the aerobic nitrogen cycle during the Great Oxidation Event
... dominated by N loss via denitrification and anammox in oxygen minimum zones 24 . Nitrogen isotope values vary from 1.4 to 12‰ across the R-TH boundary, consistent with a variable input from similar ...
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Stable isotopes and dynamic diets : the Mesolithic-Neolithic dietary transition in terrestrial Central Europe
... Stable isotope data in this context have thrown up controversial results, famously such as the ‘sharp shift’ from marine to terrestrial resources along the Atlantic façade of Europe (Richards et ...stable ...
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Evaluation of Accuracy and Precision of IRMS by Using Standard Materials and Applications
... in isotope ratios between the up- stream area including the mine entrance and the farming ...of isotope ratios was ...of nitrogen reference materials (EMA-P2) indicated that in the mass range of ...
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12-18-2014 12:00 AM A Stable Isotope Analysis of Faunal Remains from Special Deposits on Ontario Iroquoian Tradition Sites
... This thesis used stable carbon and nitrogen isotope analysis to reconstruct the diets of animals from special and non-special deposits. This information was used to evaluate whether or not diet varied with ...
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Nitrate Sources in the Old Ausable River Channel and Adjacent Aquifers in Pinery Provincial Park, Ontario Canada
... (Stable Isotope Analysis in R; R Core Team, 2014; Parnell et ...stable isotope compositions and generates probability distributions for the source inputs (Parnell et ...nitrate isotope system by Xue ...
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Hagfish feeding habits along a depth gradient inferred from stable isotopes
... stable nitrogen isotope values confirm that Neomyxine biniplicata feeds relatively high up the trophic chain, although maybe not so high as to scavenge preferentially on carrion from apex pre - ...
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EVALUATION OF NEW ENGLAND SALT MARSH SUPPORT OF THE AMERICAN EEL, ANGUILLA ROSTRATA, AND THE IMPACTS OF HYDROLOGIC RESTRICTION, Alyson L. Eberhardt
... and nitrogen isotope values of the diet (turnover rate) and the level of discrimination in each tissue relative to the diet (trophic discrimination ...estuaries. Isotope data indicated strong ...
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Isotopic incorporation rates for shark tissues from a long term captive feeding study
... Stable isotope analysis has provided insight into the dietary and habitat patterns of many birds, mammals and teleost ...stable isotope data is tissue incorporation rate, which has not been well studied in ...
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Understanding trophic interactions in host parasite associations using stable isotopes of carbon and nitrogen
... lighter nitrogen isotope, can also be taken up and metabolized by endoparasites ...lower isotope discrimination values of parasitic taxa exhibit- ing an assimilation strategy, such as the ...
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