Isotopic composition
Evaporation Depth Controls the Relationship Between Soil Water Mobility and Soil Water Isotopic Composition
... water composition in a sandy soil but failed to do so in silty and clayey soils, including a loamy ...the isotopic composition of spiked water in sandy ...
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Controls on the Sulfur Isotopic Composition of Carbonate-Associated Sulfate
... CAS composition of calcite spar and recrystallized coral, trilobite, crinoid, and bryozoan fossils varies widely (field enclosed by dashed line in Figure ...CAS composition (33 to ...an isotopic ...
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What controls the isotopic composition of Greenland surface snow?
... The isotopic mea- surements were converted to the VSMOW-SLAP scale by measuring standards of known isotopic ...known isotopic compo- sition was measured every 6 ...known isotopic ...
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Technical note: The silicon isotopic composition of choanoflagellates: implications for a mechanistic understanding of isotopic fractionation during biosilicification
... icon isotopic composition (denoted by δ 30 Si) of siliceous microfossils extracted from sediment cores can be used as an archive of past oceanic silicon ...icon isotopic composition of ...
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Seasonal variation in isotopic composition and the origin of precipitation over Bangladesh
... Water isotopic composition ( δ 18 O and δ D) in terrestrial proxies of past precipitation enable us to better understand and interpret variation in the Indian Summer Monsoon ...the isotopic ...
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Study of normalization method of isotopic composition stoisotope reference scales
... described isotopic fractionation of coexisting vapor phase and liquid phase CO 2 in cylinder ...the isotopic composition true value of reference gas should be ...
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Nutrient distribution and nitrogen and oxygen isotopic composition of nitrate in water masses of the subtropical southern Indian Ocean
... along a transect from the IOSG to the southern equatorial Indian Ocean. The main goal of this study is to investigate the relatively unknown hydrology and the unexplored distri- bution of nutrients and stable isotopes of ...
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Effects of climatic seasonality on the isotopic composition of evaporating soil waters
... the isotopic com- position of the water that is left behind, such that in dual- isotope space, evaporated waters plot below the local mete- oric water line (LMWL) that characterizes ...the isotopic composi- ...
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Spatial changes in soil stable isotopic composition in response to carrion decomposition
... Increasing δ 15 N values with depth reflects two broad biochemical processes leading to fractionation, both likely driven by microbial activities. First, the preferential excre- tion of 15 N-depleted compounds during ...
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The boron and lithium isotopic composition of mid ocean ridge basalts and the mantle
... Marschall, H.R. and Wanless, V.D. and Shimizu, N. and Pogge von Strandmann, Philip A.E. and Elliott, T. and Monteleone, B.D. (2017) The boron and lithium isotopic composition of mid-ocean ridge basalts and ...
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Isotopic composition of carbon and nitrogen in ureilitic fragments of the Almahata Sitta meteorite
... nitrogen isotopic values in several ureilitic fragments of Almahata Sitta using a stepped combustion technique that permits simultaneous analysis of d 13 C and d 15 N ...the isotopic composition of ...
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Trophic Level Influence on Stable Hydrogen Isotopic Composition of Bat Fur
... stable isotopic composition of hydrogen in bat fur provides an alternative approach for studying bat migration ...stable isotopic composition of bat tissue acts as an intrinsic marker of ...
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Determination of Isotopic Composition and Concentration of Uranium and Boron by Thermal Ionization Mass Spectrometric Isotopic Dilution Technique
... Boron and uranium are extremely important elements in the field of nuclear science researches, due to the nuclear fuel backbone of uranium and the 10 B (n,α) 7 Li neutron capture reaction [1]. Furthermore, boron is used ...
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Study of the isotopic composition of mercury: experimental approach
... definition, isotopic fractionation is the phenomenon that characterizes the isotopic composition of a chemical element as it moves from one physical state, or one chemical composition, to ...
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Renewal versus Retention: Isotopic Composition of Intestinal Epithelium and Eye Lens
... The C/N ratio for intestinal epithelium is higher than the C/N ratio for lenses in mice of both ages (4.1±0.21 and 4.4±0.28 versus 3.1±0.11 and 3.1±0.20 in 1-mo and 22-mo mice, correspondingly; the differences are ...
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Macropore flow of old water revisited: experimental insights from a tile drained hillslope
... water isotopic composition The isotopic composition of soil water was determined using cavity ring-down laser spectrometry of water vapor equili- brated with the liquid soil-water ...the ...
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Hydrochemical and Isotopic Study of Groundwater in the North Djeffara Aquifer, Gulf of Gabès, Southern Tunisia
... the isotopic composition of the study area groundwa- ter with the one of neighbouring regional aquifers (Djef- fara in the south of gabès city, Sfax and Skhira in the north) provides a salient explanation ...
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Zn isotope fractionation in a pristine larch forest on permafrost-dominated soils in Central Siberia
... A larch root sample exhibited 0.2-0.4‰ heavier isotopic composition relative to the needles. Despite limited sam- pling, this result is in agreement with previous studies showing that roots are ...
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2013 Review of Neutron and Non-Neutron Nuclear Data
... Abstract. The results of a review and evaluation of neutron and non-neutron nuclear data published in the scientific literature over the past three years since the ISRD-14 Symposium has been performed and the highlights ...
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