Results 41 to 50 of about 975,461 (302)

Analysis and Evaluation of Imperfect Harmonic Potential in Orbitrap

Zhipu Xuebao
Orbitrap mass analyzer is renowned for its capability to confine charged particles stably and precisely determine their mass-to-charge ratios via a unique electrostatic field generated by spindle-shaped electrodes.
Yu-ze ZHAO, Bing-sheng TU
doaj   +1 more source

High-Resolution Ion Mobility Spectrometry Mass Spectrometry for Isomeric Separation of Prostanoids after Girard's reagent T Derivatization

, 2023
RATIONALE: Isomeric separation of prostanoids is often a challenge and requires chromatography and time-consuming sample preparation. Multiple prostanoid isomers have distinct in vivo functions crucial to understand the inflammation process, including ...
Rob J. Vreeken, Hadavi, D, Cooper-Shepherd, D, Vreeken, R J, Ynze Mengerink, Mengerink, Y, Martin Palmer, Maarten Honing, Palmer, M, Jan Jordens, Siegel, T Porta, Bowman, A P, Honing, M, James Langridge, Andrew P. Bowman, Tiffany Porta Siegel, Lamont, L, Darya Hadavi, Lieke Lamont, Ron M. A. Heeren, Dale Cooper‐Shepherd, Langridge, J, Heeren, R M A, Flinders, B, Jordens, J, Bryn Flinders, Vreeken, R J; id_orcid   +26 more
core   +1 more source

Simulation of Unidirectional Ion Ejection in Miniature Four-Channel Linear Ion Trap Array

Sensors
With the surging demand for dynamic, real-time, and rapid qualitative analysis of chemical components, chip-scale mass spectrometers have attracted widespread attention.
Yunfan He, Zhuoqing Yang, Yan Zhang, Yunna Sun, Jinyuan Yao, Guifu Ding   +5 more
doaj   +1 more source

A high‐resolution record of Greenland mass balance [PDF]

Geophysical Research Letters, 2016
AbstractWe map recent Greenland Ice Sheet elevation change at high spatial (5 km) and temporal (monthly) resolution using CryoSat‐2 altimetry. After correcting for the impact of changing snowpack properties associated with unprecedented surface melting in 2012, we find good agreement (3 cm/yr bias) with airborne measurements.
McMillan, M, Leeson, A, Shepherd, A, Briggs, K, Armitage, TWK, Hogg, A, Kuipers Munneke, P, van den Broeke, M, Noel, B, van de Berg, WJ, Ligtenberg, S, Horwath, M, Groh, A, Muir, A, Gilbert, L   +14 more
openaire   +10 more sources

A micropixelated ion-imaging detector for mass resolution enhancement of a QMS instrument

, 2015
An in-vacuum position-sensitive micropixelated detector (Timepix) is used to investigate the time-dependent spatial distribution of different charge state (and hence different mass-to-charge (m/z)) ions exiting an electrospray ionization (ESI)-based ...
Kistemaker, Piet, Heeren, Ron M. A., Maher, Simon, Syed, Sarfaraz U. A. H., Eijkel, Gert B., Taylor, Stephen   +5 more
core   +1 more source

Simulation Study of an Extremely Miniature Hyperbolic Linear Ion Trap

Zhipu Xuebao
The miniaturization of mass spectrometers has garnered significant attention in the analytical chemistry community. Leveraging the rapid advancements in micro-electro-mechanical system (MEMS), the development of chip-scale mass spectrometers has emerged ...
Yun-fan HE, Hong-liang ZHU, Zhuo-qing YANG, Yan WANG, Gui-fu DING, Jiu-wen SUN, Dong-ting WEI, Min LIU, Jin-yuan YAO   +8 more
doaj   +1 more source

Research on Automatic Tuning of Quadurpole Mass Resolution in Quadurpole-Liner Ion Trap Tandem Mass Spectrometry

Zhipu Xuebao
In order to achieve quadrupole mass resolution and precision automatic tuning of a radial excitation mode quadrupole ion trap tandem mass spectrometer, a set of algorithms was developed that can freely set the target peak width at half maximum and ...
Xing-yu ZHAO, Mei-ying LIU, Lu ZHANG, Jie XIE, Zi-yu QU, Di ZHANG, You JIANG, Xiang FANG   +7 more
doaj   +1 more source

Cluster secondary ion mass spectrometry microscope mode mass spectrometry imaging

, 2013
RATIONALE: Microscope mode imaging for secondary ion mass spectrometry is a technique with the promise of simultaneous high spatial resolution and high-speed imaging of biomolecules from complex surfaces.
Jungmann, JH, Kiss, A., Heeren, R.M.A., Afd Scheikunde Algemeen, Smith, D.F., Sub Biomol.Mass Spectrometry & Proteom., Biomolecular Mass Spectrometry and Proteomics   +6 more
core   +1 more source

Algorithms for the analysis of MALDI peptide mass fingerprint spectra for proteomics [PDF]

, 2005
In this study we present a simple algorithm which allows accurate estimates of the similarity between peptide fingerprint mass spectra from matrix assisted laser desorption/ionization (MALDI) spectrometers.
Monigatti, Flavio
core   +1 more source

The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli, Seth Rotz, Masatoshi Takagi, Richa Sharma   +3 more
wiley   +1 more source