Results 31 to 40 of about 4,516,287 (245)

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
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A ¹⁵N stable isotope semen label to detect mating in the malaria mosquito Anopheles arabiensis Patton [PDF]

, 2008
In previous studies it was determined that the stable isotope 13-carbon can be used as a semen label to detect mating events in the malaria mosquito Anopheles arabiensis. In this paper we describe the use of an additional stable isotope, 15-nitrogen (15N)
Hood Rebecca C, Knols, B.G.J., Gludovacz Doris, Mayr Leo, Gludovacz, D., Knols Bart GJ, Helinski Michelle EH, Helinski, M., Hood-Nowotny, R.C., Mayr, L.   +9 more
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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
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Freezing and chemical preservatives alter the stable isotope values of carbon and nitrogen of the Asiatic clam (Corbicula fluminea) [PDF]

, 2010
We tested the impacts of most common sample preservation methods used for aquatic sample materials on the stable isotope ratios of carbon and nitrogen in clams, a typical baseline indicator organism for many aquatic food web studies utilising stable ...
Dorothée Kopp, Aurélia Martino, Santoul, Frédéric, Céréghino, Régis, Frédéric Santoul, Kopp, Dorothée, Régis Céréghino, Syväranta, Jari, Jari Syväranta, Martino, Aurelia   +9 more
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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
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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
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Stable carbon and radiocarbon isotope compositions of particle size fractions to determine origins of sedimentary organic matter in an estuary [PDF]

, 2002
Stable and radioactive carbon isotopic compositions of particle size fractions of a surface sediment from the Ems-Dollard estuary vary considerably with particle size. The organic material in the fine fractions (
Megens, L.,, de Leeuw, JW, van der Plicht, J, Smedes, F, Smedes, F.,, Megens, L, Plicht, J. van der,, Leeuw, J.W. de,   +7 more
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Quantification of methane oxidation in the rice rhizosphere using 13C-labelled methane [PDF]

, 1994
In this paper isotope ratio mass spectrometry is used to determine the methane (CH4) oxidation fraction in the rhizosphere of intact rice plant-soil systems.
Harren, F.J.M., van Bodegom, P.M., Bodegom, P.M. van,, Groot, T.T., Meijer, H.A.J., Groot, T.T, Groot, T.T.,, Meijer, H.A.J.,, Harren, F.J.M.,, Meijer, H.A.J.; id_orcid, Bodegom, P.M. Van, Tümpel, C.L.   +11 more
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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
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Stable isotope values in modern bryozoan carbonate from New Zealand and implications for paleoenvironmental interpretation [PDF]

, 2004
Bryozoan carbonate contains useful geochemical evidence of temperate shelf paleoenvironments. Stable isotope values were determined for 103 modern marine bryozoan skeletons representing 30 species from New Zealand. δ18O values range from -1.4 to 2.8 VPDB,
Nelson, Campbell S., Campbell S. Nelson, Marcus M. Key, Smith, Abigail M., Key, Marcus M., Patterson, William P., Abigail M. Smith, William P. Patterson   +7 more
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