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Organic oxygen and hydrogen isotopes in a porcine controlled dietary study
Rapid Communications in Mass Spectrometry, 2008Abstract Controlled feeding studies have been useful in assessing the relationship between isotope values from dietary sources and consumer tissues. We report the organic oxygen and hydrogen values of animal tissue from a porcine controlled dietary study.
Tuross, N. +3 more
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Stable Hydrogen and Oxygen Isotopes in the Water Cycle
1979The isotope ratios D/H and 18O/16Oexhibit relatively large variations in natural waters. In precipitation one observes 1) a gradual decrease of the heavy isotope concentration when going from lower to higher latitudes, l.e., with decreasing temperature (“temperature effect”; see Fig.
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The oxygen and hydrogen isotopic composition of the Black Sea
Deep Sea Research Part A. Oceanographic Research Papers, 1991The oxygen (18O/16O) and hydrogen (D/H) isotopic ratios have been measured at eight stations in the Black Sea and the Sea of Marmara. Analyses revealed that the O and H isotopic characteristics of the deep water were similar [(δ18O = −1.65‰ (σ = 0.27), δD = −14.29‰ (σ = 2.19)] across the entire width.
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Simultaneous Determination of Stable Carbon, Oxygen, and Hydrogen Isotopes in Cellulose
Analytical Chemistry, 2014A technological development is described through which the stable carbon-, oxygen-, and nonexchangeable hydrogen-isotopic ratios (δ13C,δ18O,δ2H) are determined on a single carbohydrate (cellulose) sample with precision equivalent to conventional techniques (δ13 C 0.15‰,δ18O 0.30‰,δ2H 3.0‰).
Loader, N.J. +12 more
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Stable hydrogen and oxygen isotope ratios of bottled waters of the world
Rapid Communications in Mass Spectrometry, 2005Abstract Bottled and packaged waters are an increasingly significant component of the human diet. These products are regulated at the regional, national, and international levels, and determining the authenticity of marketing and labeling claims represents a challenge to regulatory agencies.
Gabriel J, Bowen +6 more
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Hydrogen Burning of the Rare Oxygen Isotopes
2014At the Laboratory for Experimental Nuclear Astrophysics (LENA), two rare oxygen isotope proton capture studies were performed at low energies---18O(p,γ)19F and 17O(p,γ)18F. The goal of each study was to improve thermonuclear reaction rates at stellar plasma temperatures relevant to 18O and 17O destruction, respectively.
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Global application of stable hydrogen and oxygen isotopes to wildlife forensics
Oecologia, 2005Stable isotopes are being increasingly used in wildlife forensics as means of determining the origin and movement of animals. The heavy isotope content of precipitated water and snow (deltaD(p), delta(18)O(p)) varies widely and systematically across the globe, providing a label that is incorporated through diet into animal tissue.
Gabriel J, Bowen +2 more
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Hydrogen and Oxygen Stable Isotope Ratios of Milk in the United States
Journal of Agricultural and Food Chemistry, 2010Models of hydrogen and oxygen incorporation in human tissues recognize the impact of geographic location on the isotopic composition of fluid intake, but inputs can include nonlocal beverages, such as milk. Milk and cow drinking water were collected from dairies, and commercially available milk was purchased from supermarkets and fast food restaurants.
Lesley A, Chesson +4 more
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Antiphase hydrogen and oxygen isotope periodicity in chert nodules
Geochimica et Cosmochimica Acta, 2002Abstract Oxygen and hydrogen isotope analyses were made of Jurassic-age chert nodules from the Holy Cross Mountains, SE Poland, along radial transects at high spatial resolution. There is a radial “sigmoidal” periodicity for both isotope ratios, but the two are out of phase, with high δD values corresponding to low δ 18 O values.
Zachary D. Sharp +3 more
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Study on the Variation of Hydrogen and Oxygen Isotopes in Soil Water
2008 2nd International Conference on Bioinformatics and Biomedical Engineering, 2008Understanding the movement of soil water is important for water resource management and for analyzing pollutant transport in the vadose zone. The information about transfer and transformation in soil water could be provided by isotope tracing technology. The stable isotopic composition of soil water may be affected by many factors, e.g.
Haiying Hu +3 more
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