Results 41 to 50 of about 277,596 (351)

Electrospray Quadrupole Travelling Wave Ion Mobility Time-of-Flight Mass Spectrometry for the Detection of Plasma Metabolome Changes Caused by Xanthohumol in Obese Zucker (fa/fa) Rats

open access: yesMetabolites, 2013
This study reports on the use of traveling wave ion mobility quadrupole time-of-flight (ToF) mass spectrometry for plasma metabolomics. Plasma metabolite profiles of obese Zucker fa/fa rats were obtained after the administration of different oral doses ...
Claudia S. Maier   +8 more
doaj   +1 more source

Size, weight and position: ion mobility spectrometry and imaging MS combined [PDF]

open access: yes, 2011
Size, weight and position are three of the most important parameters that describe a molecule in a biological system. Ion mobility spectrometry is capable of separating molecules on the basis of their size or shape, whereas imaging mass spectrometry is ...
András Kiss, Ron M. A. Heeren
core   +2 more sources

Ion mobility spectrometry of N-methylimidazole and possibilities of its determination

open access: yesТонкие химические технологии, 2022
Objectives. To determine the ion mobility of N-methylimidazole, establish the structure of ions corresponding to characteristic signals, and determine the detection limit of N-methylimidazole on the ion-drift detector Kerber.Methods.
D. A. Aleksandrova   +9 more
doaj   +1 more source

Structural Evidence for the Tetrameric Assembly of Chemokine CCL11 and the Glycosaminoglycan Arixtra™. [PDF]

open access: yes, 2013
Understanding chemokine interactions with glycosaminoglycans (GAG) is critical as these interactions have been linked to a number of inflammatory medical conditions, such as arthritis and asthma.
Dykstra, Andrew B   +2 more
core   +2 more sources

Quantification of Volatile Acetone Oligomers Using Ion-Mobility Spectrometry

open access: yesJournal of Analytical Methods in Chemistry, 2021
Background. Volatile acetone is a potential biomarker that is elevated in various disease states. Measuring acetone in exhaled breath is complicated by the fact that the molecule might be present as both monomers and dimers, but in inconsistent ratios ...
Tobias Hüppe   +5 more
doaj   +1 more source

Hadamard Transform Ion Mobility Spectrometry Based on Matrix Encoding Modulation

open access: yesSensors, 2023
Ion mobility spectrometry (IMS) has been widely used for the on-site detection of trace chemicals, but continue to suffer from a low duty cycle of ion injection.
Ke Chen, Lingfeng Li, Peng Li
doaj   +1 more source

Applications of Direct Injection Soft Chemical Ionisation-Mass Spectrometry for the Detection of Pre-blast Smokeless Powder Organic Additives [PDF]

open access: yes, 2019
Analysis of smokeless powders is of interest from forensics and security perspectives. This article reports the detection of smokeless powder organic additives (in their pre-detonation condition), namely the stabiliser diphenylamine and its derivatives 2-
A Jordan   +45 more
core   +2 more sources

IR action spectroscopy of glycosaminoglycan oligosaccharides [PDF]

open access: yes, 2020
Glycosaminoglycans (GAGs) are a physio- and pharmacologically highly relevant class of complex saccharides, possessing a linear sequence and strongly acidic character.
Freyse, Joanna   +9 more
core   +2 more sources

Software Tools and Approaches for Compound Identification of LC-MS/MS Data in Metabolomics. [PDF]

open access: yes, 2018
The annotation of small molecules remains a major challenge in untargeted mass spectrometry-based metabolomics. We here critically discuss structured elucidation approaches and software that are designed to help during the annotation of unknown compounds.
Blaženović, Ivana   +3 more
core   +3 more sources

Online Scent Classification by Ion-Mobility Spectrometry Sequences

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
For ion-mobility spectrometry (IMS)-based electronic noses (eNose) samples of scents are markedly time-dependent, with a transient phase and a highly volatile stable phase in certain conditions.
Philipp Müller   +10 more
doaj   +1 more source

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