Search Results - "Eyler, John R."

Infrared multiple photon dissociation spectroscopy of ions in Penning traps by Eyler, John R

“…The ability of Paul and Penning traps to contain ions for time periods ranging from milliseconds to minutes allows the trapped ions to be subjected to laser…”
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When research paths crossed by Eyler, John R.

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Isotope dependent, temperature regulated, energy repartitioning in a low-barrier, short-strong hydrogen bonded cluster by Li, Xiaohu, Oomens, Jos, Eyler, John R, Moore, David T, Iyengar, Srinivasan S

“…We investigate and analyze the vibrational properties, including hydrogen/deuterium isotope effects, in a fundamental organic hydrogen bonded system using…”
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Sensitivity of positive ion mode electrospray ionization mass spectrometry (ESI MS) in the analysis of purine bases in ESI MS and on-line electrochemistry ESI MS (EC/ESI MS) by Mautjana, Nare Alpheus, Looi, Donq Wen, Eyler, John R., Brajter-Toth, Anna

“…A cone-shaped MS inlet and on-line electrochemistry (EC) were used to enhance the ionization efficiency in electrospray ionization mass spectrometry (ESI MS)…”
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Infrared Spectroscopy of Gas-Phase Cr+ Coordination Complexes:  Determination of Binding Sites and Electronic States by Moore, David T, Oomens, Jos, Eyler, John R, von Helden, Gert, Meijer, Gerard, Dunbar, Robert C

“…Infrared spectra were recorded for a series of gas-phase Cr+ complexes using infrared multiphoton dissociation (IRMPD) in a Fourier transform ion cyclotron…”
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Antioxidant Pathways and One-Electron Oxidation of Dopamine and Cysteine in Electrospray and On-Line Electrochemistry Electrospray Ionization Mass Spectrometry by Mautjana, Nare Alpheus, Estes, Joshua, Eyler, John R., Brajter-Toth, Anna

“…Dopamine [DA]+ (m/z 154), DA dimer [2DA‐H]+ (m/z 307) and DA quinone [DAQ]+ (m/z 152) are detected in positive ion mode electrospray ionization mass…”
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One-Electron Oxidation and Sensitivity of Uric Acid in On-Line Electrochemistry and in Electrospray Ionization Mass Spectrometry by Mautjana, Nare Alpheus, Estes, Joshua, Eyler, John R., Brajter-Toth, Anna

“…The sensitivity of detection of uric acid (H2U) in positive ion mode electrospray ionization mass spectrometry (ESI MS) was enhanced by uric acid oxidation…”
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Sensitivity of Positive Ion Mode Electrospray Ionization Mass Spectrometry in the Analysis of Thiol Metabolites by Mautjana, Nare Alpheus, Looi, Donq Wen, Eyler, John R., Brajter-Toth, Anna

“…High signal intensities of glutathione (GSH), [GSH+H]+ (m/z 308), cysteine (CySH), [CySH+H]+ (m/z 122), and homocysteine (hCySH), [hCySH+H]+ (m/z 136), are…”
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Gas-phase metal ion chelation investigated with IRMPD spectroscopy: A brief review of Robert Dunbar’s contributions by Oomens, Jos, Polfer, Nicolas C, Berden, Giel, Eyler, John R

“…With the passing of Prof. Robert C. Dunbar on 31 October 2017, the field of ion chemistry lost one of its modern heroes. Throughout his career in mass…”
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Efficient expression, purification, and characterization of C-terminally tagged, recombinant human asparagine synthetase by Ciustea, Mihai, Gutierrez, Jemy A., Abbatiello, Susan E., Eyler, John R., Richards, Nigel G.J.

“…Several lines of evidence suggest that up-regulation of asparagine synthetase (AS) in human T-cells results in metabolic changes that underpin the appearance…”
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Mass spectrometric quantification of asparagine synthetase in circulating leukemia cells from acute lymphoblastic leukemia patients by Abbatiello, Susan E., Pan, Yuan-Xiang, Zhou, Mi, Wayne, Alan S., Veenstra, Timothy D., Hunger, Stephen P., Kilberg, Michael S., Eyler, John R., Richards, Nigel G.J., Conrads, Thomas P.

“…The appearance of asparaginase-resistant acute lymphoblastic leukemia (ALL) in transformed cell lines has been correlated with increased expression of…”
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Differentiation of Rubidiated Methyl‑d‑Glycoside Stereoisomers by Infrared Multiple-Photon Dissociation Spectroscopy in the O–H and C–H Stretching Regions by Pearson, Wright L, Contreras, Cesar, Powell, David, Berden, Giel, Oomens, Jos, Bendiak, Brad, Eyler, John R

“…Four isomeric sugar methylglycosides (α- and β-d-gluco- and galactopyranosides) were evaluated as rubidium cation coordination adducts in the gas phase using…”
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Photodissociation of the Fluorene Cation:  A Fourier Transform Ion Cyclotron Resonance Mass Spectrometric Study by Dibben, Mark J, Kage, David, Szczepanski, Jan, Eyler, John R, Vala, Martin

“…The photodecomposition of the vapor phase fluorene cation has been studied using Fourier transform ion cyclotron resonance (ICR) mass spectrometry. Broad-band…”
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Blackbody Infrared Radiative Dissociation of Partially Solvated Mixed Ligand Ru(II) Complex Ions by Stevens, Stanley M, Dunbar, Robert C, Price, William D, Sena, Marcelo, Watson, Clifford H, Nichols, Linda S, Riveros, Jose M, Richardson, David E, Eyler, John R

“…Unimolecular dissociation reactions of gas-phase partially solvated transition metal complex ions, diamminebis(2,2‘-bipyridine)ruthenium(II),…”
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The coupling of direct analysis in real time ionization to Fourier transform ion cyclotron resonance mass spectrometry for ultrahigh-resolution mass analysis by Rummel, Julia L., McKenna, Amy M., Marshall, Alan G., Eyler, John R., Powell, David H.

“…Direct Analysis in Real Time (DART) is an ambient ionization technique for mass spectrometry that provides rapid and sensitive analyses with little or no…”
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Charge-state resolved mid-infrared spectroscopy of a gas-phase protein by Oomens, Jos, Polfer, Nick, Moore, David T, van der Meer, Lex, Marshall, Alan G, Eyler, John R, Meijer, Gerard, von Helden, Gert

“…Infrared spectra of a 104 amino-acid protein in the gas phase as a function of its charge state are presented. The spectra contain clearly resolvable bands in…”
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Electrochemistry-electrospray ionization FT ICR mass spectrometry (EC ESI MS) of guanine–tyrosine and guanine–glutathione crosslinks formed on-line by Looi, Donq Wen, Eyler, John R., Brajter-Toth, Anna

“…Crosslinking of guanine with tyrosine and glutathione is studied by on-line electrochemistry electrospray ionization mass spectrometry (EC ESI MS) in the…”
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Differentiation of Isomers by Wavelength-Tunable Infrared Multiple-Photon Dissociation-Mass Spectrometry:  Application to Glucose-Containing Disaccharides by Polfer, Nick C, Valle, Jose J, Moore, David T, Oomens, Jos, Eyler, John R, Bendiak, Brad

“…Variation in the wavelength of irradiation in infrared multiple-photon dissociation (IR-MPD) of lithium-tagged glucose-containing disaccharide ions (1−2-,…”
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Differentiation of Closely Related Isomers: Application of Data Mining Techniques in Conjunction with Variable Wavelength Infrared Multiple Photon Dissociation Mass Spectrometry for Identification of Glucose-Containing Disaccharide Ions by Stefan, Sarah E, Ehsan, Mohammad, Pearson, Wright L, Aksenov, Alexander, Boginski, Vladimir, Bendiak, Brad, Eyler, John R

“…Data mining algorithms have been used to analyze the infrared multiple photon dissociation (IRMPD) patterns of gas-phase lithiated disaccharide isomers…”
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Differentiation of Methyl-glucopyranoside Anomers by Infrared Multiple Photon Dissociation with a Tunable CO2 Laser by Stefan, Sarah E, Eyler, John R

“…Fragmentation of lithium cation-attached α- and β-O-methyl-glucopyranoside precursor ions, formed by electrospray ionization (ESI) and trapped in a Fourier…”
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