Results 41 to 50 of about 1,188,882 (284)

Measurement of a Comprehensive Sex Steroid Profile in Rodent Serum by High-Sensitive Gas Chromatography-Tandem Mass Spectrometry.

open access: yesEndocrinology, 2015
Accurate measurement of sex steroid concentrations in rodent serum is essential to evaluate mouse and rat models for sex steroid-related disorders.
Maria E. Nilsson   +13 more
semanticscholar   +1 more source

Mass spectrometry: an essential tool to be used in discrimination between causes of congenital adrenal hyperplasia, and its benefits versus radioimmunoassay

open access: yesBeni-Suef University Journal of Basic and Applied Sciences, 2021
Background Measurement of multiple steroids, 17 hydroxyprogesterone, 11 deoxycortisol, and 21 deoxycortisol, is required to discriminate between congenital adrenal hyperplasia due to 21 hydroxylase deficiency and that due to 11 beta hydroxylase ...
Heba Asfour   +6 more
doaj   +1 more source

Measurement of teicoplanin by liquid chromatography-tandem mass spectrometry:development of a novel method [PDF]

open access: yes, 2012
Teicoplanin is an antibiotic used for the treatment of endocarditis, osteomyelitis, septic arthritis and methicillin-resistant Staphylococcus aureus. Teicoplanin is emerging as a suitable alternative antibiotic to vancomycin, where their trough serum ...
Bailey, Lisa M   +5 more
core   +1 more source

Bile acid profiling and quantification in biofluids using ultra-performance liquid chromatography tandem mass spectrometry.

open access: yesAnalytical Chemistry, 2015
Bile acids are important end products of cholesterol metabolism. While they have been identified as key factors in lipid emulsification and absorption due to their detergent properties, bile acids have also been shown to act as signaling molecules and ...
M. Sarafian   +8 more
semanticscholar   +1 more source

MIST-CF: Chemical formula inference from tandem mass spectra [PDF]

open access: yes, 2023
Chemical formula annotation for tandem mass spectrometry (MS/MS) data is the first step toward structurally elucidating unknown metabolites. While great strides have been made toward solving this problem, the current state-of-the-art method depends on time-intensive, proprietary, and expert-parameterized fragmentation tree construction and scoring.
arxiv   +1 more source

Electron ionization - tandem mass spectrometry of glycosphingolipids. I.: The identification of compound-specific sequence ions in the collision-induced dissociation spectra of the immonium ions of two isomeric hexaglycosylceramides [PDF]

open access: yes, 1992
A permethylated-reduced hexaglycosylceramide in a complex glycolipid mixture isolated from a unique human tissue has been identified by using tandem mass spectrometry (MS/MS).
Breimer, M.E.   +4 more
core   +1 more source

Liquid chromatography tandem mass spectrometry analysis of synthetic coccidiostats in eggs [PDF]

open access: yes, 2017
Coccidiostats are synthetic drugs administered to animals, especially to poultry, to cure coccidiosis. In this paper, we present a selective liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to analyze residues of five synthetic ...
Buiarelli, Francesca   +6 more
core   +1 more source

LipidBlast - in-silico tandem mass spectrometry database for lipid identification

open access: yesNature Methods, 2013
Current tandem mass spectral libraries for lipid annotations in metabolomics are limited in size and diversity. We provide a freely available computer-generated tandem mass spectral library of 212,516 spectra covering 119,200 compounds from 26 lipid ...
T. Kind   +5 more
semanticscholar   +1 more source

O estado da arte da cromatografia associada à espectrometria de massas acoplada à espectrometria de massas na análise de compostos tóxicos em alimentos The state of the art of chromatography associated with the tandem mass spectrometry for toxic compound analyses in food

open access: yesQuímica Nova, 2008
Chromatography combined with several different detection systems is one of the more used and better performing analytical tools. Chromatography with tandem mass spectrometric detection gives highly selective and sensitive analyses and permits obtaining ...
Mariza C. Chiaradia   +2 more
doaj   +1 more source

Chemical ionization tandem mass spectrometer for the in situ measurement of methyl hydrogen peroxide [PDF]

open access: yes, 2010
A new approach for measuring gas-phase methyl hydrogen peroxide [(MHP) CH_3OOH] utilizing chemical ionization mass spectrometry is presented. Tandem mass spectrometry is used to avoid mass interferences that hindered previous attempts to measure ...
Crounse, John D.   +4 more
core  

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