Isotopic signature
Acid Treatment effects on the stable isotopic signature of fossils
... uniform isotopic signature and were ground together into one, homogenized sample, so that each subaliquot used in these experiments would be equal in all aspects and have the same isotopic composi- ...
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Time for cotton to uptake water of a known isotopic signature as measured in leaf petioles
... While stable isotopes of water have been used to study water movement through the environ- ment, they generally have not been used to ex- amine shorter, more transient events, e.g., rain- fall of <25 mm. With the ...
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Gridded maps of geological methane emissions and their isotopic signature
... and isotopic composi- tion for each geological source and integrated grid files) and microseepage and geothermal manifestation inven- tories are available at ...
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Finding Britain's last hunter-gatherers: A new biomolecular approach to ‘unidentifiable’ bone fragments utilising bone collagen
... marine isotopic signature, in contrast to the terrestrial signatures observed for humans from early 4 th millennium sites along the west coast of Scotland and elsewhere in Britain ...
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Seasonal origins of soil water used by trees
... the isotopic signature of soil and plant water relative to the seasonal precipitation isotope cycle; this index quantifies the overexpression of winter versus summer (recent) precipitation in xylem or ...
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Characterization of interferences to in situ observations of 13 CH 4and C2H6 when using a cavity ring-down spectrometer at industrial sites
... Figure 10. Ethane and methane content of two selected peaks. Methane and ethane 1 min averaged time series is shown in (a) and (b) for Event 1 and (e) and (f) for Event 2. Miller–Tans plots of the corresponding peaks are ...
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Temporal changes in 18O and 15N of nitrate nitrogen and H2O in shallow groundwater: Transit time and nitrate-source implications for an irrigated tract in southern Idaho
... The current research 1) evaluates the 15 N and 18 O isotopic signature of nitrate, and the deuterium ( 2 H) and the 18 O isotopes in irrigation water and subsurface tunnel drain out fl ow[r] ...
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The growth of sublimation crystals and surface hoar on the Antarctic plateau
... Since surface hoar crys- tals form from atmospheric water vapor while sublimation crystals come from snow water vapor, the isotopic signature may be different (Neumann et al., 2008; Stee[r] ...
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Renewal versus Retention: Isotopic Composition of Intestinal Epithelium and Eye Lens
... differences between the corresponding tissues of dependent juveniles and their mothers in small-bodied species (red-backed vole, deer mice) varied from -0.8 to 1.9‰ and from -1.5 to 0.5‰, respectively [11,12]. One may ...
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Changes in stable isotope compositions during fasting in phocid seals
... Although hair is a metabolically inert tissue, it would also be interesting to confirm the absence of changes in isotopic composition through time, i.e. over the whole year, between new hair collected in a season ...
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Pb Isotopes Study in Recent Sediments from Paraty Bay (Rio de Janeiro, Brazil): Antropogenic Versus Oceanic Signatures
... the isotopic signature of the gasoline and industrial pollution ( 206 Pb/ 207 Pb between ...Pb signature values here reported to the end member ...the signature of lead isotopes of the ore ...
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Noble Gas Constraints on the Origin and Evolution of Earth’s Volatiles
... Ar isotopic composi- tion of mantle reservoirs and document the isotopic heterogeneity of vesicles while avoiding atmospheric contamination was developed by Pete Burnard, now in Nancy (France) but who was ...
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Hydrothermal activity lowers trophic diversity in Antarctic hydrothermal sediments
... Both species of infaunal siboglinid (Sclerolinum contortum from Hook Ridge and the Siboglinum sp. from the non- hydrothermal sites) appeared to subsist upon chemosyntheti- cally derived organic matter, as evidenced by ...
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Secure Universal Designated Verifier Signature and its Variant for Privacy Protection
... probabilistic signature scheme and its extensions into UDVS and UDMVS ...any signature holder. The underlining security of our proposed signature scheme and its extensions is based on the bilinear ...
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Geochemistry and mineralization of Buru and Kuge volcanic carbonatite centres, Western Kenya
... secondary processes. Evidence for the primary and/or secondary alteration processes will be evaluated and results compared with the already published data from some of the Nyanza rift carbonatites and elsewhere. From ...
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Evaporation Depth Controls the Relationship Between Soil Water Mobility and Soil Water Isotopic Composition
... and isotopic composition in shallow layers, waters with highly negative lc-excess were frequently, but not always ...of isotopic compositions throughout the soil ...water isotopic composition is not ...
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Online Signature for Attendance Verification System using Levenberg-Marquardt Neural Network
... The result can be improved upon by using advance digital signature pads that can reduce the level of perfection of skilled and unskilled forged signatures. Also, more data can be collected to further improve the ...
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Signature Localization and Signature Classification
... Feature extraction starts from an initial set of measured data and builds derived values (features) intended to be informative and non-redundant, facilitating the subsequent learning and generalization steps. Feature ...
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Stable isotope analysis of dermis and the foraging behavior of whale sharks at Ningaloo Reef, Western Australia
... an isotopic niche core biased toward the δ 15 N axis, might indicate such changes in the mode of ...in isotopic composition among sizes of whale sharks sampled in the Arabian Sea off the coast of India were ...
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Evaluation of continuous water vapor D and 18 O measurements by off-axis integrated cavity output spectroscopy
... Over the observation period, the δ 18 O (δD) values ob- served from samples collected by the cold trap method var- ied widely from − 27.1 ‰ ( − 199 ‰) to − 13.1 ‰ ( − 94 ‰), and these large temporal changes were also ...
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