Results 1 to 10 of about 219,250 (192)

Machine-learning-enhanced time-of-flight mass spectrometry analysis [PDF]

open access: yesPatterns, 2021
Summary: Mass spectrometry is a widespread approach used to work out what the constituents of a material are. Atoms and molecules are removed from the material and collected, and subsequently, a critical step is to infer their correct identities based on
Ye Wei   +10 more
doaj   +7 more sources

Novel Time-of-Flight Residual Gas Analyzer (TOF-RGA) for in situ Real-time Process Monitoring

open access: yesCHIMIA, 2022
Sensitive gas analyses, in particular in industrial processes, are nowadays performed either via spectroscopy or using quadrupole mass spectrometers; the first method provides a fast but indirect measurement, whereas the second provides in situ ...
Sébastien Gasc, Lukas Hofer
doaj   +1 more source

Progress on Liquid Chromatography-High Resolution Mass Spectrometry in the Determination of Veterinary Drug Residues: A Review [PDF]

open access: yesShipin Kexue, 2023
With the rapid development of social economy and the continuous improvement of people’s living standards, the demand for foods of animal origin is also increasing.
ZHENG Yaolin, LIN Qiufeng, YANG Le, ZHOU Ruizheng, SHEN Changying, YI Huajuan, WU Jiafeng
doaj   +1 more source

Accelerated time-of-flight mass spectrometry [PDF]

open access: yes2012 IEEE Statistical Signal Processing Workshop (SSP), 2012
We study a simple modification to the conventional time of flight mass spectrometry (TOFMS) where a \emph{variable} and (pseudo)-\emph{random} pulsing rate is used which allows for traces from different pulses to overlap. This modification requires little alteration to the currently employed hardware.
Ibrahimi, Morteza   +2 more
openaire   +3 more sources

A sensitive mass spectrometry-based method to identify common respiratory pathogens in children

open access: yesMicrobiology Spectrum, 2023
Public health threats posed by emerging respiratory infections are a significant concern, particularly in children and infants. Traditional culture-based detection methods are time-consuming and typically require 1–3 days.
Lixin Hu   +10 more
doaj   +1 more source

Application of Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry

open access: yesKorean Journal of Clinical Laboratory Science, 2023
The timeliness and accuracy of test results are crucial factors for clinicians to decide and promptly administer effective and targeted antimicrobial therapy, especially in life-threatening infections or when vital organs and functions, such as sight ...
Pil Seung KWON
doaj   +1 more source

Current Progress in Femtosecond Laser Ablation/Ionisation Time-of-Flight Mass Spectrometry

open access: yesApplied Sciences, 2021
The last decade witnessed considerable progress in the development of laser ablation/ionisation time-of-flight mass spectrometry (LI-TOFMS). The improvement of both the laser ablation ion sources employing femtosecond lasers and the method of ion ...
Marek Tulej   +7 more
doaj   +1 more source

The Mass Resolution of Ca, K Isotopes and CO, N2 and C2H4 Isobars in Isotopes Separator On-Line trap Mass spectrometry

open access: yesJournal of Nigerian Society of Physical Sciences, 2020
In Isotopes separator on-line trap, ions are trapped, cooled, accumulated, bunched and isotopes or isobars are separated, cyclotron frequencies are determined, which are followed by time of flight mass resolution.
Dyavappa B M
doaj   +1 more source

Gas-phase pesticide measurement using iodide ionization time-of-flight mass spectrometry [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
Volatilization and subsequent processing in the atmosphere are an important environmental pathway for the transport and chemical fate of pesticides. However, these processes remain a particularly poorly understood component of pesticide lifecycles due
T. Murschell   +2 more
doaj   +1 more source

Towards Higher Sensitivity of Mass Spectrometry: A Perspective From the Mass Analyzers

open access: yesFrontiers in Chemistry, 2021
Mass spectrometry (MS) is one of the most widely used analytical techniques in many fields. Recent developments in chemical and biological researches have drawn much attention to the measurement of substances with low abundances in samples.
Chang Li   +8 more
doaj   +1 more source

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