Results 11 to 20 of about 658,769 (293)
The Provenance of Slovenian Milk Using 87Sr/86Sr Isotope Ratios [PDF]
Foods, 2021 This work presents the first use of Sr isotope ratios for determining the provenance of bovine milk from different regions of Slovenia. The analytical protocol for the determination of 87Sr/86Sr isotope ratio was optimised and applied to authentic milk ...
Staša Hamzić Gregorčič +5 more
doaj +2 more sources
Bronze Age non-elite mobility in Denmark examined through a new human-based bioavailable strontium isotope range. [PDF]
PLoS ONEStrontium isotope analysis is now a key method for investigating ancient human mobility, leading to a rapid expansion of available ⁸⁷Sr/⁸⁶Sr datasets. Owing to the relatively homogeneous surface geological conditions across present-day Denmark (excluding
Karin Margarita Frei +5 more
doaj +2 more sources
The role of crustal and mantle sources in the genesis of granitoids of the Antarctic Peninsula and adjacent crustal blocks [PDF]
, 2001 Magmatic rocks from the Antarctic Peninsula show marked variations in isotope composition, which reflect changes in the geodynamic evolution of the peninsula through time. Most Antarctic Peninsula granitoids formed as a result of subduction: they fall on
Millar, I.L. +3 more
core +8 more sources
Journal of Groundwater Science and Engineering, 2021 Hydrogeochemical processes that would occur in polluted groundwater and aquifer system, may reduce the sensitivity of Sr isotope being the indicator of hydraulic fracturing flowback fluids (HFFF) in groundwater.
Zhao-xian Zheng +3 more
doaj +1 more source
Stable Sr isotope (88Sr/86Sr) fractionation in calcite precious corals
Frontiers 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
Shape coexistence in Sr isotopes
Physical Review C, 2022 42 pages, 16 captioned figures.
E. Maya-Barbecho, J. E. García-Ramos
openaire +4 more sources
High Precision Strontium Isotope Measurement of Rock Standard Materials by Multi-dynamic TIMS
Yankuang ceshi, 2023 BACKGROUNDStrontium isotopes are a powerful geochemical indicator for tracing the sources and ages of ore-forming materials. TIMS is internationally recognized as the “gold standard” for determining Sr isotopic compositions, however, its analysis ...
Yuqiu WEI +4 more
doaj +1 more source
Radioactive Isotopes of Sr, Y and Zr [PDF]
Physical Review, 1940 Radioactive isotopes formed by bombardment of Rb, Sr and Y by protons, deuterons and neutrons are reported. The following are the periods and assignments: 2.75-hr. (Sr87*, e-, γ); 70-min. (Sr85, e-, γ); 66-day (Sr85, K, γ); 80-hr. (Y87, K); 14-hr. (Y87, e-, γ); 105-day (Y86, K, γ); 4.5-min. (Zr89, γ); 78-hr. (Zr89, β+).
DuBridge, L. A., Marshall, John
openaire +2 more sources
The Astrophysical Journal Letters, 2023 Nucleosynthetic isotope anomalies in meteorites allow distinguishing between the noncarbonaceous (NC) and carbonaceous (CC) meteorite reservoirs and show that correlated isotope anomalies exist in both reservoirs.
Jonas M. Schneider +2 more
doaj +1 more source
The Capitanian Minimum: A Unique Sr Isotope Beacon of the Latest Paleozoic Seawater
Frontiers in Earth Science, 2021 The long-term trend in the Paleozoic seawater 87Sr/86Sr was punctuated by a unique episode called the “Capitanian minimum” at the end of the Guadalupian (Permian; ca. 260 Ma).
Tomomi Kani, Yukio Isozaki
doaj +1 more source