Results 11 to 20 of about 339,170 (295)

An algorithm for U–Pb geochronology by secondary ion mass spectrometry [PDF]

open access: yesGeochronology, 2022
Secondary ion mass spectrometry (SIMS) is a widely used technique for in situ U–Pb geochronology of accessory minerals. Existing algorithms for SIMS data reduction and error propagation make a number of simplifying assumptions that degrade the precision
P. Vermeesch
doaj   +1 more source

Identification of New Psychoactive Tryptamines 4-OH-MET and 4-AcO-DMT Using High Resolution Mass Spectrometry and Nuclear Magnetic Resonance Spectroscopy [PDF]

open access: yesFayixue Zazhi, 2021
Objective To detect the uncontrolled new psychoactive tryptamines involved in drug-related cases with high resolution mass spectrometry and nuclear magnetic resonance spectroscopy.
DING Ke-ran, NI Chun-fang, HE Si-yang, et al.
doaj   +1 more source

Triple Oxygen Isotope Measurements by Multi-Collector Secondary Ion Mass Spectrometry

open access: yesFrontiers in Earth Science, 2021
Secondary ion mass spectrometry (SIMS) is a powerful technique for in situ triple oxygen isotope measurements that has been used for more than 30 years. Since pioneering works performed on small-radius ion microprobes in the mid-80s, tremendous progress ...
Nordine Bouden   +9 more
doaj   +1 more source

Effectiveness of Wavelet Denoising on Secondary Ion Mass Spectrometry Signals

open access: yesEast European Journal of Physics, 2023
Wavelet theory has already achieved huge success. For Secondary Ions Mass Spectrometry (SIMS) signals, denoising the secondary signal, which is altered by the measurement, is considered that an essential step prior to applying such a signal processing ...
Nadia Dahraoui   +4 more
doaj   +1 more source

Gold-Conjugated Nanobodies for Targeted Imaging Using High-Resolution Secondary Ion Mass Spectrometry

open access: yesNanomaterials, 2021
Nanoscale imaging with the ability to identify cellular organelles and protein complexes has been a highly challenging subject in the secondary ion mass spectrometry (SIMS) of biological samples.
Paola Agüi-Gonzalez   +3 more
doaj   +1 more source

The application of mass spectrometry imaging in traditional Chinese medicine: a review

open access: yesChinese Medicine, 2022
Mass spectrometry imaging is a frontier technique which connects classical mass spectrometry with ion imaging. Various types of chemicals could be visualized in their native tissues using mass spectrometry imaging.
Lieyan Huang   +7 more
doaj   +1 more source

Helium ion microscope – secondary ion mass spectrometry for geological materials

open access: yesBeilstein Journal of Nanotechnology, 2020
The helium ion microscope (HIM) is a focussed ion beam instrument with unprecedented spatial resolution for secondary electron imaging but has traditionally lacked microanalytical capabilities.
Matthew R. Ball   +5 more
doaj   +1 more source

Regional zircon U-Pb geochronology for the Maniitsoq region, southwest Greenland

open access: yesScientific Data, 2021
Measurement(s) sediment deposition • magma • crystallization • metamorphism Technology Type(s) laser ablation inductively coupled plasma mass spectrometry • secondary ion mass spectrometry Sample Characteristic - Environment rock • outcrop Sample ...
Hugo K. H. Olierook   +11 more
doaj   +1 more source

New Olivine Reference Materials for Secondary Ion Mass Spectrometry Oxygen Isotope Measurements

open access: yesCrystals, 2023
To accurately analyze the oxygen isotope of olivine using secondary ion mass spectrometry (SIMS), appropriate standard materials are required to calibrate for matrix effects caused by chemical composition differences between the samples and the standard ...
Bijie Peng   +3 more
doaj   +1 more source

Expanding the Efficacy of Fingermark Enhancement Using ToF-SIMS

open access: yesMolecules, 2023
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) has been shown to enhance fingermark recovery compared to standard processes used by police forces, but there is no data to show how generally applicable the improvement is. Additionally, ToF-SIMS
Deborah Charlton   +4 more
doaj   +1 more source

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