Results 71 to 80 of about 7,759,429 (252)

Gas-phase microsolvation of ubiquitin: investigation of crown ether complexation sites using ion mobility-mass spectrometry [PDF]

The Analyst, 2016
The influence of side chain to backbone interactions on the gas-phase structure of ubiquitin and ubiquitin lysine-to-arginine mutants was analysed.
Melanie Göth, Frederik Lermyte, Xiao Jakob Schmitt, Stephan Warnke, Gert von Helden, Frank Sobott, Kevin Pagel   +6 more
openaire   +6 more sources

Balancing Hydrophobicity and Hydrophilicity: Dual Filler‐Engineered Proton Exchange Membranes for Durable, High‐Power Fuel Cells

Advanced Functional Materials, EarlyView.
Polarity‐matched Zr–MOFs program Nafion's nanoscale morphology during solution casting. Hydrophilic UiO‐66 preserves hydrated pathways, while hydrophobic UiO‐67 increases the proton hopping sites by densifying ionic clusters. Combining both fillers yields a membrane that delivers 176 mS cm−1 conductivity, reaches 1.46 W cm−2 under 200 kPa, and triples ...
Yonghwi Cho, Yunseong Ji, Minkyu Choi, Junsu Kim, Yejin Kim, Su Jeong Lee, Wooyoung Choi, Choong Hoo Lee, Ju Yeon Kim, Ohchan Kwon, Hanim Kim, Du Yeol Ryu, Ki Chul Kim, Dae Woo Kim   +13 more
wiley   +1 more source

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

Advanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li, Yunpeng Zuo, Xiaoran Zhang, Jieqiong Shan, Kenneth Mei Yee Leung, Bin Liu, Peter Strasser, Adrian Fisher, Zonglong Zhu, Xin Wang   +9 more
wiley   +1 more source

OC-163 identification of inflammatory bowel disease (IBD) using field asymmetric ion mobility spectrometry (FAIMS) [PDF]

, 2012
Introduction Resident colonic bacteria, principally anaerobes and firmicutes, ferment undigested fibre. The resultant volatile organic compounds (VOCs) formed are dissolved in the faeces but also absorbed and excreted in the urine.
Thomas, M. G., Hetherington, E., Arasaradnam, Ramesh P., Ouaret, N., Covington, James A., Quraishi, M. N., Nwokolo, Chuka U., Bardhan, Karna Dev   +7 more
core   +1 more source

Acceleration, simplification and potential parallelization of digital polymers sequencing by coupling tandem mass spectrometry with ion mobility

Nature Communications
Tailoring the structure of digital polymers is an efficient strategy for reliable reading of large amounts of data by tandem mass spectrometry. Notably, full sequence coverage of chains containing up to 33 bytes of information is achieved for block ...
Isaure Sergent, Georgette Obeid, Thibault Schutz, Jean-François Lutz, Laurence Charles   +4 more
doaj   +1 more source

Insights into VOCs variation derived from Chinese black truffles (Tuber indicum) between grades via E-nose, HS-SPME-GC-MS, and HS-GC-IMS

Food Chemistry: X
This study investigated volatile organic compound (VOC) variations across commercial grades (G1, G2, G3) of Chinese black truffles (Tuber indicum) using electronic nose (E-nose), headspace solid-phase microextraction gas chromatography–mass spectrometry (
Yiye Luo, Lusi Ouyang, Shuo Zhang, Yusheng Wang, Pingzhang Yao, Yin Liu, Xiaoyu Chen, Lin Yuan, Zhiyong Wu   +8 more
doaj   +1 more source

Implementation of a flexible, open-source platform for ion mobility spectrometry

HardwareX, 2018
When operated as a stand-alone device, an ion mobility spectrometer (IMS) routinely offers low limits of detection (pptv-range) for gas-phase analytes even for measurement times less than a second.
Tobias Reinecke, Brian H. Clowers
doaj   +1 more source

Effects of Select Anions from the Hofmeister Series on the Gas-Phase Conformations of Protein Ions Measured with Traveling-Wave Ion Mobility Spectrometry/Mass Spectrometry [PDF]

Journal of the American Society for Mass Spectrometry, 2011
The gas-phase conformations of ubiquitin, cytochrome c, lysozyme, and α-lactalbumin ions, formed by electrospray ionization (ESI) from aqueous solutions containing 5 mM ammonium perchlorate, ammonium iodide, ammonium sulfate, ammonium chloride, ammonium thiocyanate, or guanidinium chloride, are examined using traveling-wave ion mobility spectrometry ...
Samuel I, Merenbloom, Tawnya G, Flick, Michael P, Daly, Evan R, Williams   +3 more
openaire   +2 more sources

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Internal reactions of ion/molecule complexes from isomeric protonated formyl-and acetyl-naphthalenes [PDF]

, 1988
Filges U, Grützmacher H-F. Internal reactions of ion/molecule complexes from isomeric protonated formyl-and acetyl-naphthalenes. International Journal of Mass Spectrometry and Ion Processes.
Hans-Friedrich Grützmacher, Ulrich Filges, Grützmacher, Hans-Friedrich, Filges, Ulrich   +3 more
core   +1 more source