Results 91 to 100 of about 544,006 (376)

Suppression of collision-induced dissociation in a supersonically expanding gas [PDF]

In high-resolution mass spectrometry, an electrospray ionization source is often paired with an ion-funnel to enhance ion transmission. Although it is established that ions experience collision-induced dissociation as they pass through this device, the impact of gas-flow dynamics on ion fragmentation remains unexplored.
arxiv   +1 more source

O -Acetylated sugars in the gas phase: stability, migration, positional isomers and conformation [PDF]

Physical Chemistry Chemical Physics, 2022, 24 (2), pp.1016-1022
O-acetylations are functional modifications which can be found on different hydroxyl groups of glycans and which contribute to the fine tuning of their biological activity. Localizing the acetyl modifications is notoriously challenging in glycoanalysis, in particular because of their mobility: loss or migration of the acetyl group may occur through the
arxiv   +1 more source

Model mass spectrometric study of competitive interactions of antimicrobial bisquaternary ammonium drugs and aspirin with membrane phospholipids [PDF]

, 2013
The aim of the study is to reveal molecular mechanisms of possible activity modulation of antimicrobial bis-quaternary ammonium compounds (BQAC) and aspirin (ASP) through noncovalent competitive complexation under their combined introduction into the ...
Gömöry, Ágnes, Kosevich, M. V., Pashynska, V. A., Vékey, Károly   +3 more
core   +2 more sources

Toward Personalized Stationary Chromatography Phases: Equipping Commercial Silica Phases with Selected Peptide‐Based Binding Domains to Tailor Affinity

Advanced Materials Interfaces, EarlyView.
The 7‐mer peptide motifs QFFLFFQ, QFFEFFQ, and QFQQSFF, known as good, medium, and poor binders for the photosensitizers m‐THPC and Chlorin E6 are covalently immobilized on commercial amino‐functionalized silica particles by inverse electron‐demand Diels‐Alder ligation.
Steffen A. Busche, Lukas D. Bangert, Raoul D. Brand, Tommy Kröger, Enrico Heyl, Hans G. Börner   +5 more
wiley   +1 more source

Inter-platform assessment of performance of high-throughput desorption electrospray ionization mass spectrometry

Talanta Open, 2021
High throughput analysis is increasingly relevant in both industry and academia, with applications reaching from enzymology and drug discovery to organic reaction optimization and diagnostics.
Nicolás M. Morato, R. Graham Cooks
doaj  

Analysis of Methoxymethylbenzoguanamine Resins Using Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry and Electrospray Ionization Mass Spectrometry [PDF]

, 2003
Methoxymethylbenzoguanamine resins were analyzed by matrix-assisted laser　desorption/ionization timeof-flight mass spectrometry (MALDI-TOF-MS) and electrospray ionization mass spectrometry (ESI-MS).
Arakawa Ryuichi, Fujiwara Hiroki, Irie Hidenobu, Ogawa Kimiya, Ohmoto Masayoshi, Okuno Shoji, Shiokawa Akito, 入江 豪宣, 塩川 昭人, 大本 将義, 奥野 昌二, 小川 公也, 荒川 隆一, 藤原 博樹   +13 more
core   +2 more sources

Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor

Advanced Materials Technologies, EarlyView.
A porous crystalline sensing layer has been developed in conjunction with a nanomechanical sensor for the sensitive detection of volatile fatty acids (VFAs) in admixture at high relative humidity. The sensitive, selective sensor based on supramolecular design improves the economic viability of anaerobic digesters toward a carbon neutral society ...
Subrata Maji, Jan Hynek, Kazushi Nakada, Akiko Hori, Kosuke Minami, Jan Labuta, Mandeep K. Chahal, Daniel T. Payne, Gary J. Richards, Lok Kumar Shrestha, Katsuhiko Ariga, Yusuke Yamauchi, Genki Yoshikawa, Jonathan P. Hill   +13 more
wiley   +1 more source

Differentiation between 3,4- and 4,15-Epoxyeudesmanolides by Electrospray Ionization Tandem Mass Spectrometry

Journal of Analytical Methods in Chemistry, 2017
We investigated the fragmentation of the eudesmanolide-type sesquiterpene lactones 1α-(4-hydroxymethacryloyloxy)-3α,4α-epoxy-8α-hydroxyeudesm-11(13)-6α,12-olide (1) and 1α-(2,3-epoxyangeloyloxy)-4α,15-epoxy-8α-hydroxyeudesm-11(13)-6α,12-olide (2) by ...
Herbert Júnior Dias, Ricardo Stefani, José Carlos Tomaz, Ricardo Vessecchi, Antônio Eduardo Miller Crotti   +4 more
doaj   +1 more source

Variational autoencoders for tissue heterogeneity exploration from (almost) no preprocessed mass spectrometry imaging data [PDF]

arXiv, 2017
The paper presents the application of Variational Autoencoders (VAE) for data dimensionality reduction and explorative analysis of mass spectrometry imaging data (MSI). The results confirm that VAEs are capable of detecting the patterns associated with the different tissue sub-types with performance than standard approaches.
arxiv  

A Handy Ionized Spray Source Using a Cosmetic Ionizer for ESI Mass Spectrometry [PDF]

, 2003
A handy electrospray ion source that made use of commercially available spray device for cosmetic foundation was designed and manufactured. The performance of the handy ion-source for electrospray ionization mass spectrometry (ESI-MS) was evaluated with ...
Arakawa Ryuichi, Ichihara Toshio, Katakuse Itsuo, Uemura Seiji, 交久瀬 五雄, 市原 敏雄, 植村 誠治, 荒川 隆一   +7 more
core   +1 more source