Results 11 to 20 of about 64,264 (235)

Differentiated Study of Constituents between Organic Milk and Ordinary Milk by Stable Isotope Ratio and UPLC-Q-Orbitrap

open access: yesShipin gongye ke-ji, 2023
Objective: To prevent some illegal companies driven by interests from arbitrarily labeling "organic" to deceive consumers using ways such as counterfeiting, forgery, and shoddy food.
Xuemei NIE, Yun XIE, Bozhou XU, Xiuli XU
doaj   +1 more source

A Preliminary Study to Determine the Hydrogen and Oxygen Isotopic Compositions of Natural and Bottled Water using High Sensitivity Isotope Ratio Mass Spectrometry [PDF]

open access: yesGeo Data, 2021
In this study, we introduce the stable isotopic results of water using a recently installed high sensitivity isotope ratio mass spectrometry (HS-IRMS) system at the Korea Institute of Geoscience and Mineral Resources (KIGAM).
Hyeongseok Song, Hui Je Jo, Dongwoo Yang
doaj   +1 more source

Stable Isotope Ratios and Forensic Analysis of Microorganisms [PDF]

open access: yesApplied and Environmental Microbiology, 2007
ABSTRACTIn the aftermath of the anthrax letters of 2001, researchers have been exploring various analytical signatures for the purpose of characterizing the production environment of microorganisms. One such signature is stable isotope ratios, which in heterotrophs, are a function of nutrient and water sources. Here we discuss the use of stable isotope
Helen W, Kreuzer-Martin   +1 more
openaire   +2 more sources

Stable Sr isotope (88Sr/86Sr) fractionation in calcite precious corals

open access: yesFrontiers in Marine Science, 2022
Stable isotope ratios of Sr (88Sr/86Sr) are a novel indicator for identifying terrestrial and oceanic Sr cycling and biological processes. Here we evaluate the temperature dependence of stable Sr isotope ratios (δ88Sr) in the calcite skeletons of ...
Toshihiro Yoshimura   +4 more
doaj   +1 more source

Equations for lipid normalization of carbon stable isotope ratios in aquatic bird eggs. [PDF]

open access: yesPLoS ONE, 2014
Stable isotope ratios are biogeochemical tracers that can be used to determine the source of nutrients and contaminants in avian eggs. However, the interpretation of stable carbon ratios in lipid-rich eggs is complicated because (13)C is depleted in ...
Kyle H Elliott   +2 more
doaj   +1 more source

Stable Isotope Analysis of Residual Pesticides via High Performance Liquid Chromatography and Elemental Analyzer–Isotope Ratio Mass Spectrometry

open access: yesMolecules, 2022
To broaden the range of measurable pesticides for stable isotope analysis (SIA), we tested whether SIA of the anthranilic diamides cyantraniliprole (CYN) and chlorantraniliprole (CHL) can be achieved under elemental analyzer/isotope ratio mass ...
Hee Young Yun   +6 more
doaj   +1 more source

Tracing sheep binary C3–C4 diet using stable isotope ratio (δ13C)

open access: yesItalian Journal of Animal Science, 2021
Stable isotopes are an important tool to assess livestock diet in binary mixtures of C3-C4 forages. However, the use of stable isotopes to trace livestock diet using tropical arboreal legumes has been limited.
Kariny Cavalcante de Lira   +8 more
doaj   +1 more source

Carbon and nitrogen stable isotopic data of premodern human skeletons from mainland Japan and the Ryukyu islands

open access: yesData in Brief, 2021
This dataset consists of carbon and nitrogen stable isotope ratios of bulk collagen extracted from 229 human skeletons from premodern Japan. All samples were derived from different individuals excavated from mainland Japan and the Ryukyu Islands. Most of
Takumi Tsutaya, Minoru Yoneda
doaj   +1 more source

The association between carbon and nitrogen stable isotope ratios of human hair and hypertension

open access: yesClinical Hypertension, 2023
Background The relationship between stable isotope ratios and dietary protein sources has been reported. However, few studies have examined the effect of stable isotope ratios on metabolic risk in humans. We investigated whether the stable isotope ratios
Song Vogue Ahn, Jong-Ku Park
doaj   +1 more source

Determination of Chlorine Stable Isotopes in Groundwater Inorganics by Continuous Flow Isotope Mass Spectrometry Method and Analysis of Influence Factors

open access: yesYankuang ceshi, 2022
BACKGROUND Stable chlorine isotope, as an effective tracer, can indicate the water evolution and explore the changes of the geological environment. It has a wide application prospect in earth science.
LIU Jun   +4 more
doaj   +1 more source

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