Results 31 to 40 of about 226,974 (153)

Implications of Matrix Effects in Quantitative HPLC/ESI-ToF-MS Analyses of Atmospheric Organic Aerosols

open access: yesProceedings, 2020
Matrix-induced signal suppression or enhancements are known phenomena in electrospray ionization mass spectrometry. Very few studies report on method development for organic aerosols analyses with the evaluation of the matrix effects.
Cornelia Amarandei   +2 more
doaj   +1 more source

Multicenter Study Using Desorption-Electrospray-Ionization-Mass-Spectrometry Imaging for Breast-Cancer Diagnosis

open access: yes, 2018
The histological and molecular subtypes of breast cancer demand distinct therapeutic approaches. Invasive ductal carcinoma (IDC) is subtyped according to estrogen-receptor (ER), progesterone-receptor (PR), and HER2 status, among other markers. Desorption-
Luis Otávio Sarian (5759609)   +25 more
core   +1 more source

Identification of Monohexosylceramides From by Electrospray Ionization Mass Spectrometry

open access: yesNatural Product Communications, 2020
To date, the monohexosylceramides present in the eukaryotic alga Euglena gracilis has not been reported. In this study, we extracted and purified a lipid fraction that eluted similarly to other reported monohexosylceramides.
Nairui Zhang   +7 more
doaj   +1 more source

Single-Cell Analysis and Its Applications by Surface Desorption Ambient Mass Spectrometry

open access: yesZhipu Xuebao
As the fundamental units of the structure and function of living organisms, cells perform the core functions of life activities. With the deepening research in life sciences, the importance of studies on cellular heterogeneity has become increasingly ...
Dan LIN   +5 more
doaj   +1 more source

Arc-Induced Electrospray Ionization Mass Spectrometry

open access: yes, 2023
Arc-induced electrospray ionization mass spectrometry (AESI-MS) was developed during which alternating current electrospray is simply achieved through the arc plasma.
Xingyue Li (5168501)   +5 more
core   +1 more source

Needle‐free, Liquid Metal‐embedded Electrospray Deposition System for Controlled Microdroplet Printing

open access: yesAdvanced Science
Electrospray systems have been widely utilized in biomedical, pharmaceutical, and materials science applications due to their ability to enable precise liquid manipulation and efficient ionization.
Chaeyeong Kang   +9 more
doaj   +1 more source

Shaping electrospray plume with convergent sound beams

open access: yesiScience
Summary: Electrospray ionization (ESI) is one of the mainstream ionization techniques for mass spectrometry (MS) nowadays. Here, we present a new variant of ESI-MS setup, in which an electrospray emitter points to the mass spectrometer’s orifice while ...
Yu-Hao Chen   +2 more
doaj   +1 more source

Merged electrospray ionization mass spectrometry [PDF]

open access: yes, 2009
Ambient ionization allows the analysis of materials in their native environment without sample preparation by creating ions outside the mass spectrometer.
Dong, Jianan, null null, Jianan Dong
core   +1 more source

The Flexible Microtube Plasma as Post-Ionization Source for Cholesterol in nano-Electrospray Mass Spectrometry [PDF]

open access: yes, 2021
Cholesterol serves as a biomarker in clinical- and life-sciences. The determination of abnormal levels can indicate several types of human diseases.
Daniel, Foest   +5 more
core   +2 more sources

FRAGMENTATION STUDIES OF D6,7-ANHIDROERITROMISIN-A BY LIQUID CHROMATOGRAPHY-MASS SPECTROSCOPY (LC-MS)

open access: yesIndonesian Journal of Chemistry, 2010
Semisynthesis of D6,7-Anhydroerythromycin-A was done by biomodification technique by addition of 0.2% INH into a culture fermentation of Saccharopolyspora erythraea ATCC 11635 in medium Hutchinson.
Khairan Khairan   +2 more
doaj   +1 more source

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