Results 21 to 30 of about 240,361 (354)

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

Recent advances in the application of stable isotope ratio analysis in forensic chemistry [PDF]

open access: yes, 2010
This review paper updates the previous literature in relation to the continued and developing use of stable isotope ratio analysis in samples which are relevant to forensic science.
Benson   +40 more
core   +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

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

open access: yesShipin 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   +5 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

open access: yesJournal 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   +8 more
doaj   +1 more source

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

open access: yes, 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   +2 more
core   +1 more source

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

open access: yes, 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

Boron isotope ratio determination in carbonates /via/ LA-MC-ICP-MS using soda-lime glass standards as reference material [PDF]

open access: yes, 2010
A new in situ method using LA-MC-ICP-MS (193 nm excimer laser) for the determination of stable boron isotope ratios (δ11B) in carbonates was developed.
Aggarwal   +39 more
core   +1 more source

Towards a global interpretation of dual nitrate isotopes in surface waters [PDF]

open access: yes, 2019
Modern anthropogenic activities have significantly increased nitrate (NO3-) concentrations in surface waters. Stable isotopes (delta N-15 and delta O-18) in NO3- offer a tool to deconvolute some of the human-made changes in the nitrogen cycle.
Boeckx, Pascal   +2 more
core   +2 more sources

Carbon stable isotope analysis of cereal remains as a way to reconstruct water availability: preliminary results [PDF]

open access: yes, 2011
Reconstructing past water availability, both as rainfall and irrigation, is important to answer questions about the way society reacts to climate and its changes and the role of irrigation in the development of social complexity.
AM Rosen   +97 more
core   +1 more source

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