Results 21 to 30 of about 164,500 (217)

Selenium isotope analysis [PDF]

Open-File Report, 1982
The isotope ratio of selenium-80 to selenium-74 was determined on an isotope ratio mass spectrometer. Samples of 2 to 4 mg of selenium were fluorinated with CoF/sub 3/ in a small disposable copper bomb. The product, SeF/sub 6/, was purified in a vacuum line by distillation.
C.L. Webster, C.G. Warren
openaire   +1 more source

The distribution of anadromy and residency in steelhead/ rainbow trout in the Eel River, northwestern California

California Fish and Wildlife Journal, 2021
To inform management and conservation of the species, we investigated the distribution of anadromy and residency of steelhead/rainbow trout (Oncorhynchus mykiss) in the Eel River of northwestern California.
Bret C. Harvey, Rodney J. Nakamoto, Adam J. R. Kent, Christian E. Zimmerman   +3 more
doaj   +1 more source

The Principle and Application of "On Peak Zero" Correction in MC-ICP-MS Analysis

Yankuang ceshi, 2022
BACKGROUND Multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) has been widely applied to accurate and precise measurements of isotope ratios due to its high sample throughput, strong ionization ability of ICP sources and high mass ...
WANG Jin, BIAN Xiaopeng, YANG Tao
doaj   +1 more source

The High-Status Late Medieval Skull Shaped Relic in Turku Cathedral, Finland – a study of its origin with oxygen and strontium isotope analyses

Internet Archaeology, 2022
The relics and associated reliquaries of Turku Cathedral are among the most significant early Christian artefacts in Finland preserved in situ. Despite their importance, they have not been the focus of scientific enquiry for a number of decades.
Maria Lahtinen
doaj   +1 more source

Isotopic analysis

, 2023
We recorded the detailed process of our supplementary isotopic experiment in Chinese.
openaire   +1 more source

East Anglian early Neolithic monument burial linked to contemporary Megaliths

Annals of Human Biology, 2019
In the fourth millennium BCE a cultural phenomenon of monumental burial structures spread along the Atlantic façade. Megalithic burials have been targeted for aDNA analyses, but a gap remains in East Anglia, where Neolithic structures were generally ...
Christiana L. Scheib, Ruoyun Hui, Eugenia D’Atanasio, Anthony Wilder Wohns, Sarah A. Inskip, Alice Rose, Craig Cessford, Tamsin C. O’Connell, John E. Robb, Christopher Evans, Ricky Patten, Toomas Kivisild   +11 more
doaj   +1 more source

Recent Progresses in Stable Isotope Analysis of Cellulose Extracted from Tree Rings

Plants, 2021
In this work, the challenges and progression in stable isotope investigation, from the analytical tools and technical sample preparation procedures to the dendroclimatological experiments, were reviewed in terms of their use to assess tree physiological ...
Silviu-Laurentiu Badea, Oana Romina Botoran, Roxana Elena Ionete   +2 more
doaj   +1 more source

A Fully Automated Chemical Separation and Purification System and Its Application to Isotope Analysis

Yankuang ceshi, 2020
BACKGROUND Critical problems such as ion diffusion and uncontrollable flow rate exist when applying the traditional natural flow chromatography column method to isotope analysis. The proposed automated chemical purification system improves the efficiency
ZHU Zhi-yong, ZHU Xiang-kun, YANG Tao
doaj   +1 more source

Spatial palaeoecology of large-herbivore hominin prey-species at Salzgitter-Lebenstedt, Lower Saxony, Germany: multi-isotope analysis of sequentially-sampled tooth enamel from Rangifer tarandus and Equus sp.

Frontiers in Environmental Archaeology
The application of high-resolution methods to reconstruct the ecology and behavior of large-herbivores within Late Pleistocene contexts in Europe has revealed increasing evidence for variability in diet, habitat preference, ranges and mobility patterns ...
Phoebe Heddell-Stevens, Phoebe Heddell-Stevens, Sarah Barakat, Andreas Pastoors, Mary Lucas, Mary Lucas, Erin Scott, Petrus Le Roux, Patrick Roberts, Patrick Roberts   +9 more
doaj   +1 more source

Geochemistry Exploration and Geothermometry Application in the North Zone of Seulawah Agam, Aceh Besar District, Indonesia

Energies, 2019
A geochemistry study has been done in four geothermal manifestations—Ie-Seu’um, Ie-Brôuk, Ie-Jue and the Van-Heutz crater—located in the north zone of Seulawah Agam mountain (Aceh Besar District, Indonesia). The study was performed
Rinaldi Idroes, Muhammad Yusuf, Saiful Saiful, Muksin Alatas, Subhan Subhan, Andi Lala, Muslem Muslem, Rivansyah Suhendra, Ghazi Mauer Idroes, Marwan Marwan, Teuku Meurah Indra Mahlia   +10 more
doaj   +1 more source