Results 31 to 40 of about 7,880 (221)

Flexible Drift Tube for High Resolution Ion Mobility Spectrometry (Flex-DT-IMS) [PDF]

Analytical Chemistry, 2020
This paper describes, in detail, the development of a novel, low-cost, and flexible drift tube (DT) along with an associated ion mobility spectrometer system. The DT is constructed from a flexible printed circuit board (PCB), with a bespoke "dog-leg" track design, that can be rolled up for ease of assembly. This approach incorporates a shielding layer,
Barry L. Smith, Cedric Boisdon, Iain S. Young, Thanit Praneenararat, Tirayut Vilaivan, Simon Maher   +5 more
openaire   +2 more sources

Hyphenated differential mobility spectrometry for rapid separation and detection

Reviews in Analytical Chemistry, 2016
This paper reviews hyphenated differential mobility spectrometry (DMS) technology. DMS is a type of ion mobility spectrometry (IMS) also called high-field asymmetric waveform IMS. It is widely used in the detection of chemical warfare agents, explosives,
Yang Liu, Han Qiang, Cao Shuya, Yang Junchao, Zhao Jiang, Ding Mingyu   +5 more
doaj   +1 more source

Ion mobility spectrometry reveals intermediate states in temperature-resolved DNA unfolding [PDF]

, 2017
Electrospray ionization (ESI) mass spectrometry (MS) is used to study the non-covalent interactions of short 12-mer oligonucleotides under native conditions.
R.M.A. Heeren, Porta, T., B. Hommersom, Heeren, R. M. A., Hommersom, B., T. Porta   +5 more
core   +1 more source

Uncovering the behaviour of ions in the gas-phase to predict the ion mobility separation of isomeric steroid compounds

, 2022
Bile acids are steroid compounds involved in biological mechanisms of neurodegenerative diseases making them potential biomarkers for diagnosis or treatment. These compounds exist as structural and conformational isomers, which hinder distinguishing them
Porta Siegel, Tiffany, Hadavi, Darya, Borzova, Marina, Honing, Maarten   +3 more
core   +1 more source

Implementation of a flexible, open-source platform for ion mobility spectrometry

HardwareX, 2018
When operated as a stand-alone device, an ion mobility spectrometer (IMS) routinely offers low limits of detection (pptv-range) for gas-phase analytes even for measurement times less than a second.
Tobias Reinecke, Brian H. Clowers
doaj   +1 more source

Field-Dependent Reduced Ion Mobilities of Positive and Negative Ions in Air and Nitrogen in High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS) [PDF]

Journal of the American Society for Mass Spectrometry, 2020
In High Kinetic Energy Ion Mobility Spectrometry (HiKE-IMS), ions are formed in a reaction region and separated in a drift region, which is similar to classical drift tube ion mobility spectrometers (IMS) operated at ambient pressure. However, in contrast to the latter, the HiKE-IMS is operated at a decreased background pressure of 10–40 mbar and ...
Maria Allers, Ansgar T. Kirk, Christoph Schaefer, Duygu Erdogdu, Walter Wissdorf, Thorsten Benter, Stefan Zimmermann   +6 more
openaire   +2 more sources

Assignment of polymorphic species of insulin analogues in ion mobility mass spectroscopy

Data in Brief, 2017
Electrospray ionization – ion mobility spectrometry – mass spectrometry (ESI–IMS–MS) allows the identification of protein polymorphic distribution of protein conformers and oligomers.
Maely P. Fávero-Retto, Luiz Henrique Guerreiro, Cássio M. Pessanha, Leonardo C. Palmieri, Luís Maurício T.R. Lima   +4 more
doaj   +1 more source

Comparative Study of E-Nose, GC-MS, and GC-IMS to Distinguish Star Anise Essential Oil Extracted Using Different Extraction Methods

Separations, 2023
In this study, star anise (Illicium verum) essential oils (SAEOs) were extracted by hydrodistillation (HD), ethanol solvent extraction (ESE), supercritical CO2 (SCD) and subcritical extraction (SE) via electronic nose (E-nose), gas chromatography-mass ...
Xianghua Chai, Xiaowan Huang, Tong Zhang, Kegang Wu, Xuejuan Duan, Hongpeng Yu, Xiaoli Liu   +6 more
doaj   +1 more source

The feeding tube of cyst nematodes:characterisation of protein exclusion [PDF]

, 2014
Plant parasitic nematodes comprise several groups; the most economically damaging of these are the sedentary endoparasites. Sedentary endoparasitic nematodes are obligate biotrophs and modify host root tissue, using a suite of effector proteins, to ...
Jones, John T., Ault James R., John T Jones, Eves-van den Akker, Sebastian, James R. Ault (515791), Alison E Ashcroft, Jones John T., Urwin, Peter E., Jones, JT, Catherine J Lilley, Eves-van den Akker Sebastian, Eves-van den Akker, S, Catherine J. Lilley (182995), Ashcroft, Alison E., Lilley Catherine J., Sebastian Eves-van den Akker, Urwin Peter E., John T. Jones (207247), Ault, James R., James R Ault, Peter E. Urwin (183000), Ashcroft, Alison E, Lilley, Catherine J., Ault, JR, Alison E. Ashcroft (515792), Ashcroft, AE, Ashcroft Alison E., Sebastian Eves-van den Akker (515790), Lilley, CJ, Urwin, PE, Peter E Urwin   +30 more
core   +1 more source

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

Metabolites, 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, Adrian F. Gombart, Jan F. Stevens, Yuan Jiang, Jeff Morré, Jay Kirkwood, Samanthi I. Wickramasekara, LeeCole Legette, Fereshteh Zandkarimi   +8 more
doaj   +1 more source