Results 21 to 30 of about 2,088,465 (288)
Biology, 2023 Alzheimer’s’ disease (AD) is characterized by the formation of β-amyloid (Aβ) plaques and neurofibrillary tangles of tau protein in the brain. Aβ plaques are formed by the cleavage of the β-amyloid precursor protein (APP).
Kasper Hobin +4 more
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Geochemistry, Geophysics, Geosystems, 2021 Melt inclusions provide unique insights into magmatic sources and processes. This study presents a method for simultaneously measuring Pb isotopes and trace elements in melt inclusions using a 193 nm excimer laser ablation system coupled to a multiple ...
Le Zhang +5 more
doaj +1 more source
View, 2021 All elements with two or more isotopes show natural variation in their isotopic composition as a result of the isotope fractionation that accompanies (bio)chemical reactions and (bio)physical processes.
Frank Vanhaecke +1 more
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Solid Earth Sciences, 2021 The Tengshan'ao Sn deposit, located at the Dayishan ore field, Nanling Range, is one of the recently explored deposits in this region. In this study, LA-MC-ICP-MS cassiterite U–Pb and muscovite 40Ar-39Ar isotopic dating analyses for altered granite-type ...
Zunzun Zhang +9 more
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Determination of Copper Isotope Composition of Soil Reference Materials by MC-ICP-MS
Yankuang ceshi, 2021 BACKGROUND In recent years, copper isotopes have been widely applied in supergene environments and biogeochemical processes, acting as novel tracers for soil pollution and biogeochemical cycles during pedogenesis.
LIU Wan, LI Dan-dan, LIU Sheng-ao
doaj +1 more source
LIA results for La Bauma and Les Ferreres samples (MC-ICP-MS).
, 2021 LIA results for La Bauma and Les Ferreres samples (MC-ICP-MS).
Ignacio Montero-Ruiz (6576902) +4 more
core +1 more source
Solid Earth Sciences, 2016 Because Pb isotopes can be used for tracing, they are widely used in many disciplines. The detection and analysis of Pb isotopes of bulk samples are usually conducted using thermal ionization mass spectrometer (TIMS) and multiple-collector inductively ...
Honglin Yuan +9 more
doaj +1 more source
Geosystems and Geoenvironment, 2023 Different natural and anthropogenic processes cause pollution of various water bodies worldwide creating numerous health problems for humans. This causes serious concern as water is a basic necessity to all living beings, and needs to be adequately ...
V. Balaram +4 more
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Determination of the isotopic composition of tungsten using MC-ICP-MS
Analytica Chimica Acta, 2019 The processes of planetary accretion or formation of the Earth and other celestial objects can be studied by using the 182Hf-182W chronometer which requires precise measurements of tungsten isotope ratios. Many comparative measurements for the isotopic composition of tungsten have been performed using either thermal ionization mass spectrometry (TIMS ...
Zhang, Rouxi +5 more
openaire +3 more sources
Copper Isotopic Analysis in Geological and Biological Reference Materials by MC‐ICP‐MS [PDF]
Geostandards and Geoanalytical Research, 2020 The characterisation of relative copper isotope amount ratios (δ65Cu) helps constrain a variety of geochemical processes occurring in the geosphere, biosphere and hydrosphere. The accurate and precise determination of δ65Cu in matrix reference materials is crucial in the effort to validate measurement methods.
Sullivan, Kaj +5 more
openaire +3 more sources