Results 31 to 40 of about 43,067 (263)
High-Pressure Ion Mobility Spectrometry [PDF]
Analytical Chemistry, 2009 The effects of above-ambient pressure on ion mobility on resolving power, resolution, and ion current were investigated using a small, stand-alone ion mobility spectrometer (IMS). This work demonstrates the first example of ion mobility spectrometry at pressures above ambient.
Eric J, Davis +4 more
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Online Scent Classification by Ion-Mobility Spectrometry Sequences
Frontiers 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
Right in two: capabilities of ion mobility spectrometry for untargeted metabolomics
Frontiers in Molecular Biosciences, 2023 This mini review focuses on the opportunities provided by current and emerging separation techniques for mass spectrometry metabolomics. The purpose of separation technologies in metabolomics is primarily to reduce complexity of the heterogeneous systems
Tessa Moses, Karl Burgess
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Investigation of Dendriplexes by Ion Mobility-Mass Spectrometry
Molecules, 2014 Highly branched polyamidoamine (PAMAM) dendrimers presenting biological activities have been envisaged as non-viral gene delivery vectors. They are known to associate with nucleic acid (DNA) in non-covalent complexes via electrostatic interactions ...
Emma-Dune Leriche +6 more
doaj +1 more source
Chemical standards in ion mobility spectrometry [PDF]
The Analyst, 2010 In ion mobility spectrometry (IMS), reduced mobility values (K(0)) are used as a qualitative measure of gas phase ions, and are reported in the literature as absolute values. Unfortunately, these values do not always match with those collected in the field.
Roberto, Fernández-Maestre +4 more
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Measurement of acetates in air using differential ion mobility spectrometer
E3S Web of Conferences, 2017 Volatile organic compounds are one of the most important group of air pollutants. Potential health and environmental problems resulting from their emission prompted the requirement for monitoring these species. It motivates development of new measurement
Szczurek Andrzej +3 more
doaj +1 more source
Biomolecule Analysis by Ion Mobility Spectrometry [PDF]
Annual Review of Analytical Chemistry, 2008 Although nonnative protein conformations, including intermediates along the folding pathway and kinetically trapped misfolded species that disfavor the native state, are rarely isolated in the solution phase, they are often stable in the gas phase, where macromolecular ions from electrospray ionization can exist in varying charge states. Differences in
Brian C, Bohrer +4 more
openaire +2 more sources
Molecules, 2023 The unambiguous identification of lipids is a critical component of lipidomics studies and greatly impacts the interpretation and significance of analyses as well as the ultimate biological understandings derived from measurements.
Dylan H. Ross +5 more
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Tau acetylation at K331 has limited impact on tau pathology in vivo
FEBS Letters, EarlyView.We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source
Separations, 2022 The separation and discrete detection of isomeric sequence peptides with similar properties are important tasks for analytical science. Three different peptide isomers of 12 amino-acid residues long, containing direct and reverse regions of the alanine ...
Yury E. Glazyrin +3 more
doaj +1 more source