Search Results - "Newsome, G. Asher"

Interlaboratory and cross-platform accessibility of time-of-flight wood identification database by Lancaster, Cady A., Newsome, G. Asher, Campbell-Such, Julia

“…The mass spectral database of tree species built by US Fish and Wildlife Service has thousands of entries and has been a valuable resource to combat illegal…”
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Isobutane Made Practical as a Reagent Gas for Chemical Ionization Mass Spectrometry by Newsome, G. Asher, Steinkamp, F. Lucus, Giordano, Braden C.

“…As a reagent gas for positive- and negative-mode chemical ionization mass spectrometry (CI-MS), isobutane ( i -C 4 H 10 ) produces superior analyte signal…”
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Identifying VOCs in exhibition cases and efflorescence on museum objects exhibited at Smithsonian’s National Museum of the American Indian-New York by Alvarez-Martin, Alba, George, John, Kaplan, Emily, Osmond, Lauren, Bright, Leah, Newsome, G. Asher, Kaczkowski, Rebecca, Vanmeert, Frederik, Kavich, Gwénaëlle, Heald, Susan

“…Two mass spectrometry (MS) methods, solid-phase microextraction gas chromatography (SPME–GC–MS) and direct analysis in real time (DART-MS), have been explored…”
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Improving IRMPD in a Quadrupole Ion Trap by Newsome, G. Asher, Glish, Gary L.

“…A focused laser is used to make infrared multiphoton photodissociation (IRMPD) more efficient in a quadrupole ion trap mass spectrometer. Efficient (up to…”
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Non-proximate Sampling and Photoionization for Damage-Free Mass Spectrometric Analysis of Intact Native American Baskets by Newsome, G. Asher, Martin, Kathleen M.

“…Selected examples of Native American woven woodsplint basketry created between 1870 and 1983 are studied to recover traditional knowledge about their…”
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High-Resolution Mass Spectrometry and Nontraditional Mass Defect Analysis of Brominated Historical Pigments by Alvarez-Martin, Alba, Newsome, G. Asher, Janssens, Koen

“…The implementation of high-resolution mass spectrometry systems offers new possibilities for the analysis of complex art samples such as historical oil…”
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Interface for Reproducible, Multishot Direct Analysis of Solid-Phase Microextraction Samples by Newsome, G. Asher, Kavich, Gwénaëlle, Alvarez-Martin, Alba

“…An enclosed interface that joins a direct analysis in real time (DART) probe, solid-phase microextraction (SPME) fiber, and the inlet of a high-resolution mass…”
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Minimally Invasive Liquid Microjunction Sampling to Identify Dye on a 17th Century Spanish Illuminated Manuscript by Lawther, Hannah A., Newsome, G. Asher

“…Common sampling methods for mass spectrometry such as sectioning are undesirably damaging to cultural heritage objects. A liquid microjunction sampling…”
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In-Line Dopant Generation for Atmospheric Pressure Ionization Mass Spectrometry by Newsome, G. Asher, Cleland, Timothy P

“…A concentric trace gas permeation tube that diffuses chemical reagents to a central carrier gas stream is used to drive chemical reaction pathways and…”
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Selective Sampling to and Desorption from Single Solid-Phase Microextraction Arrow Fiber for Replicative and Quantitative Analysis by Newsome, G. Asher, Birdsall, Erin R., Cody, Robert B.

“…New analytical functionality is demonstrated with an enclosed interface that joins a solid phase microextraction (SPME) device, a direct analysis in real time…”
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Flow-Optimized Model for Gas Jet Desorption Sampling Mass Spectrometry by Chen, Xi, Newsome, G. Asher, Buchanan, Michael, Glasper, Jeremy, Hua, Leyan, Latif, Mohsen, Gandhi, Viraj, Li, Xintong, Larriba-Andaluz, Carlos

“…Thermal gas jet probes, including post-plasma desorption/ionization sources, have not been studied using computational fluid dynamics (CFD) models, as have…”
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Rapid Evaluation of the Debromination Mechanism of Eosin in Oil Paint by Direct Analysis in Real Time and Direct Infusion-Electrospray Ionization Mass Spectrometry by Alvarez-Martin, Alba, Cleland, Timothy P, Kavich, Gwénaëlle M, Janssens, Koen, Newsome, G. Asher

“…Eosin is a synthetic organic colorant prone to fading under the influence of light. On the basis of the growing interest in the understanding of the…”
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Humidity Affects Relative Ion Abundance in Direct Analysis in Real Time Mass Spectrometry of Hexamethylene Triperoxide Diamine by Newsome, G. Asher, Ackerman, Luke K, Johnson, Kevin J

“…Unstable explosive hexamethylene triperoxide diamine (HMTD) is dangerous in quantity and benefits from the minimal sampling handling associated with…”
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Humidity Effects on Fragmentation in Plasma-Based Ambient Ionization Sources by Newsome, G. Asher, Ackerman, Luke K., Johnson, Kevin J.

“…Post-plasma ambient desorption/ionization (ADI) sources are fundamentally dependent on surrounding water vapor to produce protonated analyte ions. There are…”
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Minimizing thermal degradation in gas chromatographic quantitation of pentaerythritol tetranitrate by Lubrano, Adam L., Field, Christopher R., Newsome, G. Asher, Rogers, Duane A., Giordano, Braden C., Johnson, Kevin J.

“…•PETN is analyzed successfully using thermal desorption at elevated temperatures.•Direct liquid deposition on thermal desorption tubes to calibrate PETN…”
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A New Approach to IRMPD Using Selective Ion Dissociation in a Quadrupole Ion Trap by Newsome, G. Asher, Glish, Gary L.

“…Infrared multiphoton photodissociation (IRMPD) in a quadrupole ion trap is not selective for a parent ion. Product ions are decreased in abundance by…”
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Gas-phase dopant flow to modify nanoLC-MS and nanoESI protein charge by Newsome, G. Asher, Cleland, Timothy P.

“…A miniature permeation device is used to add controlled amounts of gas-phase dopant to the air around two types of atmospheric pressure nanoflow electrospray…”
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Novel instrumentation and method development for a quadrupole ion trap mass spectrometer by Newsome, G Asher

“…Part of the work described in this dissertation has involved development of instrumentation for the analysis of aerosol compounds. A quadrupole ion trap mass…”
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Quantification of Allergenic Bovine Milk α S1 -Casein in Baked Goods Using an Intact 15 N-Labeled Protein Internal Standard by Newsome, G. Asher, Scholl, Peter F.

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Quantification of Allergenic Bovine Milk αS1-Casein in Baked Goods Using an Intact 15N-Labeled Protein Internal Standard by Newsome, G. Asher, Scholl, Peter F

“…Intact bovine 15N-αS1-casein was used as an internal standard in a selected reaction monitoring (SRM) assay for milk protein in baked food samples containing…”
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