Results 31 to 40 of about 4,297,069 (302)

In Search of Disentanglement in Tandem Mass Spectrometry Datasets

open access: yesBiomolecules, 2023
Generative modeling and representation learning of tandem mass spectrometry data aim to learn an interpretable and instrument-agnostic digital representation of metabolites directly from MS/MS spectra.
Krzysztof Jan Abram, Douglas McCloskey
doaj   +1 more source

Mass spectrometry of alkylbenzenes and related compounds. Part I. Gas-phase ion chemistry of alkylbenzene radical cations [PDF]

open access: yes, 1990
Kuck D. Mass spectrometry of alkylbenzenes and related compounds. Part I. Gas-phase ion chemistry of alkylbenzene radical cations. Mass Spectrometry Reviews.
Dietmar Kuck, Kuck, Dietmar
core   +1 more source

Quantitative tandem mass spectrometry in the clinical laboratory: Regulation and opportunity for validation of laboratory developed tests

open access: yesJournal of Mass Spectrometry and Advances in the Clinical Lab, 2023
Tandem mass spectrometry is an important analytical tool for clinical laboratories, but tests developed and validated in-house (laboratory developed tests, or LDTs) require special consideration.
Judith A. Stone, J. Grace van der Gugten
doaj   +1 more source

Determination of itraconazole and hydroxyitraconazole in plasma by use of liquid chromatography-tandem mass spectrometry with on-line solid-phase extraction [PDF]

open access: yes, 2003
In this paper a method for the simultaneous quantification of the anti-fungal drug itraconazole and its co-active metabolite hydroxyitraconazole in plasma employing liquid chromatography tandem-mass spectrometry and automated solid-phase extraction is ...
Spöhrer, Ute   +2 more
core   +1 more source

Impact of glucuronide interferences on therapeutic drug monitoring of posaconazole by tandem mass spectrometry [PDF]

open access: yes, 2010
Background: Posaconazole is a novel antifungal drug for oral application intended especially for therapy of invasive mycoses. Due to variable gastrointestinal absorption, adverse side effects, and suspected drug-drug interactions, therapeutic drug ...
Michael Vogeser   +9 more
core   +1 more source

Determination of 4-Methylimidazole in Ammonia Caramel Using Gas Chromatography–Tandem Mass Spectrometry (GC-MS/MS)

open access: yesJournal of Food Quality, 2018
One of Maillard reaction products formed in the production of ammonia caramel is 4(5)-methylimidazole (4-MeI) classified as carcinogen. A method of 4-MeI determination based on ion-pair extraction and derivatisation with isobutyl chloroformate with ...
Martyna N. Wieczorek   +2 more
doaj   +1 more source

Evaluation of Sample Preparation Methods for Fast Proteotyping of Microorganisms by Tandem Mass Spectrometry

open access: yesFrontiers in Microbiology, 2019
Tandem mass spectrometry-based proteotyping allows characterizing microorganisms in terms of taxonomy and is becoming an important tool for investigating microbial diversity from several ecosystems.
Karim Hayoun   +5 more
doaj   +1 more source

Solid phase extraction for removal of matrix effects in lipophilic marine toxin analysis by liquid chromatography-tandem mass spectrometry [PDF]

open access: yes, 2009
The potential of solid phase extraction (SPE) clean-up has been assessed to reduce matrix effects (signal suppression or enhancement) in the liquid chromatography-tandem mass spectrometry (LC¿MS/MS) analysis of lipophilic marine toxins.
Boer, J., de   +20 more
core   +1 more source

Differential melting voltage by tandem-trapped ion mobility spectrometry: glycan structure influences glycoprotein stability [PDF]

open access: yesRSC Chemical Biology
Profiling the full spectrum of protein glycoforms is critical to understanding their functional roles. We developed the differential melting voltage approach using tandem-ion mobility/tandem-mass spectrometry and applied it to study Ribonuclease B ...
Mengqi Chai   +2 more
doaj   +1 more source

Measurement of kynurenine pathway metabolites by tandem mass spectrometry

open access: yesJournal of Mass Spectrometry and Advances in the Clinical Lab, 2023
Objectives: Recent studies have shown that derangements in kynurenine pathway metabolite levels are associated with various pathologies such as neurodegenerative diseases, schizophrenia, depression, bipolar disorder, rheumatoid arthritis, and cancer ...
Sedat Abusoglu   +4 more
doaj   +1 more source

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