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Determination of Creatinine in Human Urine with Flow Injection Tandem Mass Spectrometry [PDF]

open access: yes, 2012
Background/Aims: Excretion of urinary compounds in spot urine is often estimated relative to creatinine. For the growing number of liquid chromatography-tandem mass spectrometry (LC-MS/MS) assays of urine-excreted molecules, a fast and accurate method ...
Koletzko, Berthold   +2 more
core   +1 more source

Hybrid mass spectrometers for tandem mass spectrometry [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2008
Mass spectrometers that use different types of analyzers for the first and second stages of mass analysis in tandem mass spectrometry (MS/MS) experiments are often referred to as "hybrid" mass spectrometers. The general goal in the design of a hybrid instrument is to combine different performance characteristics offered by various types of analyzers ...
Gary L. Glish, David J. Burinsky
openaire   +3 more sources

Application of tandem two-dimensional mass spectrometry for top-down deep sequencing of calmodulin [PDF]

open access: yes, 2018
Two-dimensional mass spectrometry (2DMS) involves simultaneous acquisition of the fragmentation patterns of all the analytes in a mixture by correlating their precursor and fragment ions by modulating precursor ions systematically through a fragmentation
Barrow, Mark P.   +5 more
core   +1 more source

Improved mass accuracy for tandem mass spectrometry [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2005
With the emergence of top-down proteomics, the ability to achieve high mass measurement accuracy on tandem MS/MS data will be beneficial for protein identification and characterization. (FT-ICR) Fourier transform ion cyclotron resonance mass spectrometers are the ideal instruments to perform these experiments with their ability to provide high ...
James E. Bruce   +2 more
openaire   +3 more sources

Plasma free and total carnitine measured in children by tandem mass spectrometry

open access: yesBrazilian Journal of Medical and Biological Research, 2002
Free and total carnitine quantification is important as a complementary test for the diagnosis of unusual metabolic diseases, including fatty acid degradation disorders.
J.H. Osorio, M. Pourfarzam
doaj   +1 more source

Tandem mass spectrometry data quality assessment by self-convolution

open access: yesBMC Bioinformatics, 2007
Background Many algorithms have been developed for deciphering the tandem mass spectrometry (MS) data sets. They can be essentially clustered into two classes.
Tham Wai, Choo Keng
doaj   +1 more source

Rapid method for Mycobacterium tuberculosis identification using electrospray ionization tandem mass spectrometry analysis of mycolic acids [PDF]

open access: yes, 2013
Mycolic acids (MAs), which play a crucial role in the architecture of mycobacterial cell walls, were analyzed using electrospray ionization tandem mass spectrometry. A targeted analysis based on the 10 most abundant and characteristic multiple reaction
Beata Janiszewska-Drobinska   +38 more
core   +1 more source

Water Circulation and Marine Environment in the Antarctic Traced by Speciation of 129I and 127I

open access: yesScientific Reports, 2017
Emissions of anthropogenic 129I from human nuclear activities are now detected in the surface water of the Antarctic seas. Surface seawater samples from the Drake Passage, Bellingshausen, Amundsen, and Ross Seas were analyzed for total 129I and 127I, as ...
Shan Xing   +6 more
doaj   +1 more source

BLINK enables ultrafast tandem mass spectrometry cosine similarity scoring

open access: yesScientific Reports, 2023
Metabolomics has a long history of using cosine similarity to match experimental tandem mass spectra to databases for compound identification. Here we introduce the Blur-and-Link (BLINK) approach for scoring cosine similarity.
Thomas V. Harwood   +5 more
doaj   +1 more source

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