Results 31 to 40 of about 612,314 (336)

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

Italian 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, José Carlos Batista Dubeux, Mário de Andrade Lira, Francisco Fernando Ramos Carvalho, Mércia Virgínia Ferreira Santos, Márcio Vieira Cunha, Alexandre Carneiro Leão Mello, David M. Jaramillo, José Diogenes Pereira Neto   +8 more
doaj   +1 more source

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

Data 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

Existing and emerging technologies for measuring stable isotope labelled retinol in biological samples: isotope dilution analysis of body retinol stores [PDF]

, 2014
This paper discusses some of the recent improvements in instrumentation used for stable isotope tracer measurements in the context of measuring retinol stores, in vivo.
Preston, Tom
core   +1 more source

Characterisation and attempted differentiation of European and extra-European olive oils using stable isotope ratio analysis.

Food Chemistry, 2019
European law requires a designation of origin for virgin and extra virgin olive oils (at least in terms of EU/non-EU provenance). Stable isotope ratios have been successfully applied to determine the geographical origin of olive oils, but never to ...
L. Bontempo, M. Paolini, P. Franceschi, L. Ziller, D. L. García-González, F. Camin   +5 more
semanticscholar   +1 more source

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

Clinical 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

Yankuang 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, WANG Ying, SU Ai-na, LIU Fu-liang, ZHANG Lin   +4 more
doaj   +1 more source

C/N/O/S stable isotopic and chemometric analyses for determining the geographical origin of Panax ginseng cultivated in Korea

Journal of Ginseng Research, 2018
Background: The geographical origin of Panax ginseng Meyer, a valuable medicinal plant, is important to both ginseng producers and consumers in the context of economic profit and human health benefits.
Ill-Min Chung, Jae-Kwang Kim, Ji-Hee Lee, Min-Jeong An, Kyoung-Jin Lee, Sung-Kyu Park, Jang-Uk Kim, Mi-Jung Kim, Seung-Hyun Kim   +8 more
doaj   +1 more source

Authenticity Certification of Pu'er Raw Tea in Different Years Based on the Stable Isotope Ratios of Carbon and Nitrogen in Caffeine and Amino Acids

Shipin gongye ke-ji, 2023
The method of carbon and nitrogen stable isotope ratio analysis in caffeine and amino acids (gas chromatography combustion isotope ratio mass spectrometry, GC-C-IRMS) was used to carry out the authenticity certification of Pu'er raw tea in different ...
Honglin LIU, Yitao ZENG, Huarong TONG, Kai ZHANG, Zhao LI, Tianlai YANG   +5 more
doaj   +1 more source

Improved quality control criteria for stable carbon and nitrogen isotope measurements of ancient bone collagen

Journal of Archaeological Science, 2021
The carbon (δ13C) and nitrogen (δ15N) isotopic compositions of bone and tooth collagen provide a powerful tool for studying past biological, environmental, and cultural phenomena.
E. Guiry, P. Szpak
semanticscholar   +1 more source

Stable isotope analysis of human hair and nail samples: the effects of storage on samples [PDF]

, 2008
When submitting samples for analysis, maintaining sample integrity is essential. Appropriate packaging must be used to prevent damage, contamination or loss of sample.
Fraser, Isla, Kalin, Robert M., Meier-Augenstein, Wolfram   +2 more
core   +1 more source