Results 11 to 20 of about 157,015 (313)

From Analysis to Assessment: Machine Learning for Non-Target Screening of Pollutants Using Chromatography Coupled with (Ion Mobility) Mass Spectrometry [PDF]

open access: yesToxics
The growing diversity of anthropogenic chemicals in the environment far exceeds the scope of routine analytical monitoring. Non-target screening (NTS) using high-resolution mass spectrometry (HRMS) has thus emerged to discover unknown organic ...
Dongshan Lin   +4 more
doaj   +2 more sources

Fundamentals of ion mobility spectrometry [PDF]

open access: yesCurrent Opinion in Chemical Biology, 2018
Fundamental questions in ion mobility spectrometry have practical implications for analytical applications in general, and omics in particular, in three respects.
Valérie Gabelica   +5 more
core   +6 more sources

Recent Progress in Protein Stereochemical Modifications Revealed by Ion Mobility-Mass Spectrometry [PDF]

open access: yesZhipu Xuebao, 2022
Protein stereochemical modification (SCM) is a unique type of low-abundance post-translational modification associated with many human diseases. Because it does not change the molecular weight of proteins, traditional proteomics methods are generally not
XU Xia1   +3 more
doaj   +1 more source

Mobile ion in a Fermi sea [PDF]

open access: yesPhysical Review A, 2022
The remarkable single particle control of individual ions combined with the versatility of ultracold atomic gases makes hybrid ion-atom system an exciting new platform for quantum simulation of few- and many-body quantum physics. Here, we study theoretically the properties of a mobile ion immersed in a quantum degenerate gas of fermionic atoms.
Esben Rohan Christensen   +2 more
openaire   +3 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

Simulations and experiments of the generation apparatus of the DC electric field with the space charge

open access: yesHigh Voltage, 2021
To make accurate measurements, field mills must be calibrated in a known DC electric field space charge in which the quantities can be control1ed. A simulation model of the generation apparatus of the electric field with a space charge has been built ...
Yanzhao Wang   +3 more
doaj   +1 more source

Multi-Omic Analysis to Characterize Metabolic Adaptation of the E. coli Lipidome in Response to Environmental Stress

open access: yesMetabolites, 2022
As an adaptive survival response to exogenous stress, bacteria undergo dynamic remodelling of their lipid metabolism pathways to alter the composition of their cellular membranes.
Thomas Kralj   +7 more
doaj   +1 more source

Effect of Humidity on the Mobilities of Small Ions in Ion Mobility Spectrometry

open access: yesAnalytical Chemistry, 2023
Ions in the ion mobility spectrometry (IMS) are mostly hydrated. A single peak in the drift time spectrum is usually generated by a mixture of ions differing in the number of attached water molecules. Under real IMS detector operating conditions, ions change their composition during movement in the drift region due to the changes in the number of water
Izabela Wolańska   +3 more
openaire   +2 more sources

THE MOBILITY OF THE GELATINATE ION [PDF]

open access: yesJournal of General Physiology, 1932
1. Many measurements were made with the two systems H2/NaOH C/NaOH C + x gm. gelatin/H2 H2/NaOH C/KCl (sat.)/NaOH C + x gm. gelatin/H2 in which x was varied from zero to more than enough for complete combination. 2.
A L, Ferguson, A W, Schluchter
openaire   +2 more sources

Fast Ions Transportation in Nanochannel with ATPase‐Like Structure

open access: yesSmall Structures, 2023
Ion transport plays an important role in various biological processes because of the ability of ions to move rapidly in biological ion channel‐confined spaces.
Bingxin Lu   +4 more
doaj   +1 more source

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