Results 11 to 20 of about 13,098 (230)
ANALYTICAL EMPLOYMENT OF STABLE ISOTOPES OF CARBON, NITROGEN, OXYGEN AND HYDROGEN FOR FOOD AUTHENTICATION [PDF]
Italian Journal of Food Safety, 2011 Stable isotopes of carbon, nitrogen, oxygen and hydrogen were used for analytical purposes for the discrimination of the type of production (farming vs. fishing) in the case of sea bass and for geographical origin in the case of milk.
E. Novelli +5 more
doaj +2 more sources
Relationships between hornblende K-Ar ages, chemical composition and hydrogen isotopes, Connemara, western Ireland: evidence for a massive extinct hydrothermal system [PDF]
, 2001 Major element compositional analyses, K-Ar ages, deltaD parts per thousand and delta O-18 parts per thousand values for 30 zoned and unzoned hornblendes from Dalradian amphibolites and metagabbros. mostly in north Connemara are reported.
Fallick, A.E., Jappy, T.G., Leake, B.E.
core +9 more sources
Anthropogenic Effects on Hydrogen and Oxygen Isotopes of River Water in Cities. [PDF]
Int J Environ Res Public Health, 2019 Stable hydrogen and oxygen isotopes are important indicators for studying water cycles. The isotopes are not only affected by climate, but are also disturbed by human activities.
Li X +7 more
europepmc +2 more sources
Isotopic Fingerprinting: A Promising Tool for Coffee Authenticity Checks
Proceedings, 2023 Almost every physical or chemical process in nature favors certain light stable isotopes over others, and thereby leaves an isotopic “fingerprint” on the substances involved.
Johannes Wintel +4 more
doaj +1 more source
Frontiers in Earth Science, 2023 It has been well reported that earthquakes can cause changes in groundwater chemistry and isotopes, and much of those changes were occurred in wells or hot springs; however, changes in cold spring caused by local small earthquakes have received less ...
Yang Xiang +3 more
doaj +1 more source
Datasets for spatial variation of O and H isotopes in waters and hair across South Korea
Data in Brief, 2020 The data presented here include the results of oxygen (δ18O) and hydrogen (δ2H) isotope analyses of water and human scalp hair samples collected from throughout the South Korea.
Mukesh Kumar Gautam +4 more
doaj +1 more source
Adsorption separation of heavier isotope gases in subnanometer carbon pores
Nature Communications, 2021 Separation of isotopes of heavier gases than hydrogen or helium is essential for biomedical applications, but current methods are very energy and time consuming.
Sanjeev Kumar Ujjain +15 more
doaj +1 more source
Journal of Groundwater Science and Engineering, 2022 Guanzhong Basin is a typical medium-low temperature geothermal field mainly controlled by geo-pressure in the west of China. The characteristics of hydrogen and oxygen isotopes were used to analyze the flow and storage modes of geothermal resources in ...
Feng Ma +3 more
doaj +1 more source
Monitoring Characteristics of Hydrogen and Oxygen Isotopes in Precipitation of Nanjing
应用气象学报, 2022 With the climate change, extreme precipitation events become more and more frequent. It is particularly important to explore the characteristics of different precipitation types for the study of local precipitation process and water cycle.
Zhu Xuan +6 more
doaj +1 more source
Geosciences, 2023 We report estimated stable isotope compositions of Artic paleoprecipitation using phyllosilicates sampled from three paleosols and two bentonites in the Prince Creek Formation (Maastrichtian) in northern Alaska.
Kate Andrzejewski +4 more
doaj +1 more source