Results 71 to 80 of about 3,438,712 (289)

Adaptive Coordination Engineering for Efficient and Robust H2 Release

Advanced Science, EarlyView.
β‐H elimination is a pivotal but challenging step in homogeneous formic acid dehydrogenation reactions due to strict hydride‐metal matching. By using a rationally designed Pd1Ag2 bimetallic system with adaptive Pd1‐Ag2/L2 coordination and formate bridges, it enables boosted formic acid dehydrogenation under ambient air (7.7 times higher than a Pd ...
Xiaolin Jiang, Xiaoyang Yan, Shenglong Jiang, Hongdan Zhu, Heng Wang, Xiaopeng Li, Xiaochun Zhou, Mingdong Zhou, Qian Peng   +8 more
wiley   +1 more source

An Organic Chemist’s Guide to Electrospray Mass Spectrometric Structure Elucidation

Molecules, 2019
Tandem mass spectrometry is an important tool for structure elucidation of natural and synthetic organic products. Fragmentation of odd electron ions (OE+) generated by electron ionization (EI) was extensively studied in the last few decades, however ...
Arnold Steckel, Gitta Schlosser
doaj   +1 more source

Analysis of Narrow-Leaf Lupin Proteins in Lupin-Enriched Pasta by Untargeted and Targeted Mass Spectrometry

Foods, 2020
The supplementation of different food items with grain legumes and, in particular, with lupin has been demonstrated to provide useful health benefits, especially in the area of cardiovascular disease prevention.
Gilda Aiello, Yuchen Li, Giovanna Boschin, Marco Stanziale, Carmen Lammi, Anna Arnoldi   +5 more
doaj   +1 more source

Strategy to rapidly discriminate trace isomeric lignan compounds from Gymnotheca chinensis by probe electrospray ionization tandem mass spectrometry

, 2015
Probe electrospray ionization (PESO is a recently developed ionization technique based on electrospray ionization (ESI) that generates electrospray from the tip of a solid needle.
Liu, Jie, Ji, Baocheng, Xia, Bing, Zhou, Yan, Ding, Lisheng, Li, Jingrong, Zhou, Y (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China., Xiao, Shiji   +7 more
core   +1 more source

Imaging of Human Lens Lipids by Desorption Electrospray Ionization Mass Spectrometry [PDF]

, 2010
The lipid composition of the human lens is distinct from most other tissues in that it is high in dihydrosphingomyelin and the most abundant glycerophospholipids in the lens are unusual 1-O-alkyl-ether linked phosphatidylethanolamines and ...
Wu, C., Mitchell, T. W., Cooks, R. Graham, Deeley, J. M., Todd W. Mitchell, Chunping Wu, R. Graham Cooks, Panhuis, M. I. H., Panhuis, Marc in het, Xiangjia Zhu, Zhu, Xiangjia, Zhu, X., Roger J. W. Truscott, Truscott, R. J. W., Cooks, R. G., Truscott, Roger J.W., Wu, Chunping, Shane R. Ellis, Stephen J. Blanksbya, Ellis, Shane R., Mitchell, Todd W., Jane M. Deeley, Deeley, Jane M., Marc in het Panhuis, Ellis, S. R., Blanksby, Stephen J.   +25 more
core   +1 more source

Identification of a Nonribosomal Peptide Analog With Activity Against Multiple Gram‐Positive Bacteria via a Synthetic Bioinformatic Natural Product Discovery Approach

Advanced Science, EarlyView.
The genome of Rhodococcus erythropolis D‐1 was analyzed by bioinformatic tools to mine a novel nonribosomal peptide synthetase (NRPS) gene cluster. A nonribosomal peptide analog ZURJC5 associated with the NRPS was chemically synthesized. Through structure‐activity relationship studies, ZURJC28 was ultimately obtained and showed antibacterial activity ...
Keyi Chen, Jiayi Liang, Yujia Wu, Jianan Xu, Yi Liu, Wenguang Wang, Xinhang Jiang, Benjie Gao, Yueyue Wang, Hui Jiang   +9 more
wiley   +1 more source

Direct Ambient Analysis of Pharmaceutical and Ecstasy Tablets

CHIMIA, 2006
Desorption electrospray ionization (DESI) is a new ionization technique recently introduced in analytical chemistry for the ambient analysis of surfaces by mass spectrometry.
Luc Alexis Leuthold, Jean-François Mandscheff, Marc Fathi, Christian Giroud, Marc Augsburger, Emmanuel Varesio, Gérard Hopfgartner   +6 more
doaj   +1 more source

Investigating the interactions and conformations of metalloproteins by means of mass spectrometry [PDF]

The use of mass spectrometry for the study of proteins and their non-covalent interactions has expanded rapidly since the introduction of ionisation techniques capable of transferring intact complexes into the gas phase.
Kondrat, Frances D. L.
core  

A Single‐Cell Transcriptomic Atlas of the Ovine Rumen Microbiome Characterizes Lineage‐Specific Metabolic Shifts Associated with Host Heat Tolerance

Advanced Science, EarlyView.
An optimized single‐cell transcriptomic framework profiles over 60 000 cells to map the ovine rumen microbiome, partitioning the ecosystem into seven cross‐species functional clusters. In heat‐resistant hosts, a lineage‐specific metabolic shift in Anaerovibrio lipolyticus toward a highly glycolytic phenotype contributes to a “nutritional sparing ...
Sanbao Zhang, Qinyang Jiang, Junjie Ma, Jianwei Zou, Fan Wang, Feifei Lv, Yanna Huang, Yongcheng Wang, Ziye Xu   +8 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