Results 61 to 70 of about 75,094 (189)
Non-targeted LC-MS based metabolomics analysis of the urinary steroidal profile [PDF]
, 2017 The urinary steroidal fraction has been extensively explored as non-invasive alternative to monitor pathological conditions as well as to unveil the illicit intake of pseudo-endogenous anabolic steroids in sport.
Botrè, Francesco +3 more
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Journal of Fungi, 2023 Over the past two decades, hypoxylaceous specimens were collected from several sites in Thailand. In this study, we examined their affinity to the genus Pyrenopolyporus using macroscopic and microscopic morphological characters, dereplication of their ...
Sarunyou Wongkanoun +8 more
doaj +1 more source
Development of correlated FIB-ToF-SIMS and SEM-AM methods for the search for, and characterisation of, enriched uranium particles [PDF]
EPJ Web of ConferencesAs part of a global initiative to detect and monitor uranium use in nuclear facilities, the International Atomic Energy Agency (IAEA) collects environmental samples from various countries and analyses them for the presence of man-modified uranium and ...
Rickard William +2 more
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Biological tissue imaging with time‐of‐flight secondary ion mass spectrometry and cluster ion sources [PDF]
Journal of Mass Spectrometry, 2005 AbstractTime‐of‐flight secondary ion mass spectrometry (TOF‐SIMS) using liquid metal ion guns (LMIGs) is now sensitive enough to produce molecular‐ion images directly from biological tissue samples. Primary cluster ions strike a spot on the sample to produce a mass spectrum. An image of this sample is achieved by rastering the irradiated point over the
Brunelle, Alain +2 more
openaire +2 more sources
Structure analysis of biologically important prokaryotic glycopolymers [PDF]
, 2013 Of the many post-translational modifications organisms can undertake, glycosylation is the most prevalent and the most diverse. The research in this thesis focuses on the structural characterisation of glycosylation in two classes of glycopolymer (
Ventura, Valeria Victoria +1 more
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Adsorption Science & Technology, 2018 During catalytic cracking of methane reaction, different carbon nanostructures can be formed. This paper shows the results of a characteristic nanostructured carbon deposit obtained during cracking of methane reaction over nanocrystalline iron catalysts ...
Kamila Maj, Ireneusz Kocemba
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Quantification of calcium content in bone by using ToF-SIMS-a first approach [PDF]
, 2013 The determination of the spatially resolved calcium distribution and concentration in bone is essential for the assessment of bone quality. It enables the diagnosis and elucidation of bone diseases, the course of bone remodelling and the assessment of ...
El Khassawna, Thaqif +9 more
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Microscope imaging by time-of-flight secondary ion mass spectrometry [PDF]
Microscopy Microanalysis Microstructures, 1992 The concept of Secondary Ion Microscopy, introduced by Castaing et al. [1], is applied to a direct imaging time-of-flight (TOF) mass spectrometer. The ion optical configuration for a particular [2] stigmatic imaging TOF mass spectrometer is reviewed. A number of fundamental factors influencing the mass resolution in any TOF spectrometer are discussed ...
openaire +1 more source
Scientific Reports, 2022 This work explores the possibility of depth profiling of inorganic materials with Megaelectron Volt Secondary Ion Mass Spectrometry using low energy primary ions (LE MeV SIMS), specifically 555 keV Cu2+, while etching the surface with 1 keV Ar+ ions ...
Marko Barac +6 more
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Mass spectra of neutral particles released during electrical breakdown of thin polymer films [PDF]
, 1985 A special type of time-of-flight mass spectrometer triggered from the breakdown event was developed to study the composition of the neutral particle flux released during the electrical breakdown of polymer films problem. Charge is fed onto a metal-backed
Kendall, B. R. F.
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