Results 21 to 30 of about 2,561 (192)
Ab Initio Phase Diagram of Chromium to 2.5 TPa
Applied Sciences, 2022 Chromium possesses remarkable physical properties such as hardness and corrosion resistance. Chromium is also a very important geophysical material as it is assumed that lighter Cr isotopes were dissolved in the Earth’s molten core during the planet’s ...
Samuel R. Baty +4 more
doaj +1 more source
The Osmium Isotope Signature of Phanerozoic Large Igneous Provinces
Geophysical Monograph Series, Page 229-246., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson +2 more
wiley +7 more sources
Yankuang ceshi, 2019 BACKGROUND With the development of Multi-collector Thermal Ionization Mass Spectrometry (MC-TIMS) and Multi-collector Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS), Cr isotopes had been successfully measured at a high resolution.
SHI Kai +4 more
doaj +1 more source
Frontiers in Immunology, 2023 Reliable and sensitive characterization assays are important determinants of the successful clinical translation of immunotherapies. For the assessment of cytolytic potential, the chromium 51 (51Cr) release assay has long been considered the gold ...
Kiriakos Koukoulias +9 more
doaj +1 more source
Principles and Treatment Methods for Metal Isotopes Analysis
Yankuang ceshi, 2021 BACKGROUND In the past twenty years, methods for metal isotopes analysis (iron, copper, zinc, magnesium, calcium, lithium, molybdenum, selenium, mercury, chromium, cadmium, alum, barium, titanium, etc.) have been established.
LI Jin +3 more
doaj +1 more source
E3S Web of Conferences, 2013 Hexavalent chromium-contaminated groundwaters and sediments in northern Italy have been studied using the Cr stable-isotope systematics and electron spin resonance spectroscopy (ESR), in order to explore redox changes and soil-groundwater interactions ...
Marafatto F. F. +5 more
doaj +1 more source
Nature Communications, 2017 Identifying the original impactor from craters remains challenging. Here, the authors use chromium and oxygen isotopes to indicate that the Zhamanshin astrobleme impactor was a carbonaceous chrondrite by demonstrating that depleted 17O values are due to ...
Tomáš Magna +9 more
doaj +1 more source
The oxic degradation of sedimentary organic matter 1400 Ma constrains atmospheric oxygen levels [PDF]
Biogeosciences, 2017 We studied sediments from the ca. 1400 million-year-old Xiamaling Formation from the North China block. The upper unit of this formation (unit 1) deposited mostly below storm wave base and contains alternating black and green-gray shales with very ...
S. Zhang +6 more
doaj +1 more source
A new type of solar-system material recovered from Ordovician marine limestone
Nature Communications, 2016 Meteorites falling on Earth today are believed to represent 100–150 parent bodies. Within 470 Myr ago sediments at a limestone quarry in Sweden, Schmitz et al.
B. Schmitz +5 more
doaj +1 more source
Environmental Health and Preventive Medicine, 2023 Background: Few prospective studies have investigated the association between paternal occupational exposures and risk of infant congenital heart defects (CHDs).
Mina Hayama-Terada +6 more
doaj +1 more source