Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Joel D. Keelor"'
Autor:
Kasper Krijnen, Joel D. Keelor, Sebastian Böhm, Shane R. Ellis, Claus Köster, Jens Höhndorf, Ron M. A. Heeren, Ian G. M. Anthony
Publikováno v:
Journal of the American Society for Mass Spectrometry, 34(4), 720-727. Springer, Cham
Mass spectrometry imaging (MSI) is a surface analysis technique that produces chemical images and is commonly used for biological and biomedical research. Multimodal imaging combines multiple imaging modes in order to get a more comprehensive view of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48d9c57324d1c5cacf7e943d48179d7c
https://cris.maastrichtuniversity.nl/en/publications/c131328e-9224-4aaf-bc11-e945e0c3f0e1
https://cris.maastrichtuniversity.nl/en/publications/c131328e-9224-4aaf-bc11-e945e0c3f0e1
Autor:
Anjusha Mathew, Joel D. Keelor, Gert B. Eijkel, Ian G. M. Anthony, Jingming Long, Jord Prangsma, Ron M. A. Heeren, Shane R. Ellis
Publikováno v:
Analytical Chemistry, 95(2), 1470-1479. American Chemical Society
The Timepix (TPX) is a position- and time-sensitive pixelated charge detector that can be coupled with time-of-flight mass spectrometry (TOF MS) in combination with microchannel plates (MCPs) for the spatially and temporally resolved detection of bio
Publikováno v:
Analytical Chemistry, 94(42), 14652-14658. American Chemical Society
Mass spectrometry imaging (MSI) maps the spatial distributions of chemicals on surfaces. MSI requires improvements in throughput and spatial resolution, and often one is compromised for the other. In microprobe-mode MSI, improvements in spatial resol
Publikováno v:
Analytical Chemistry. 89:11301-11309
Atmospheric pressure drift tube ion mobility spectrometry (AP-DTIMS) was coupled with Fourier transform Orbitrap mass spectrometry. The performance capabilities of this versatile new arrangement were demonstrated for different DTIMS ion gating operat
Autor:
Ariel V. Macatangay, Daniel B. Gazda, Thomas M. Orlando, Matthew C. Bernier, Stephen Zambrzycki, Prabha Dwivedi, Rosana M. Alberici, William T. Wallace, Joel D. Keelor, Josh M. Symonds, Facundo M. Fernández, Thomas Limero
Publikováno v:
Journal of the American Society for Mass Spectrometry. 27:1203-1210
Low molecular weight polar organics are commonly observed in spacecraft environments. Increasing concentrations of one or more of these contaminants can negatively impact Environmental Control and Life Support (ECLS) systems and/or the health of crew
Autor:
Sarah Brittman, Andries Lof, Xueying Li, Erik C. Garnett, Yanqi Luo, Teodor Duevski, Gede W. P. Adhyaksa, Joel D. Keelor, Ron M. A. Heeren, Shane R. Ellis, David P. Fenning, Haralds Āboliņš
Publikováno v:
Advanced Materials, 30(52):1804792. Wiley-VCH Verlag
Grain boundaries play a key role in the performance of thin-film optoelectronic devices and yet their effect in halide perovskite materials is still not understood. The biggest factor limiting progress is the inability to identify grain boundaries. N
Autor:
Christina M. Jones, Facundo M. Fernández, O. David Sparkman, Joel D. Keelor, Jennifer J. Pittman, Matthew Curtis, Patrick R. Jones
Publikováno v:
Rapid Communications in Mass Spectrometry. 29:431-439
Rationale The success of ambient analysis using plasma-based ion sources depends heavily on fluid dynamics and mass transport efficiency in the sample region. To help characterize the influence of these determining factors, visualization of the gas f
Autor:
Joel D. Keelor, Charlotte Reininger, Facundo M. Fernández, Paul B. Farnsworth, Adam Kaylor, Kellie Woodfield
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 100:98-104
The absolute number densities of helium atoms in the 2s 3S1 metastable state were determined in four plasma-based ambient desorption/ionization sources by atomic absorption spectroscopy. The plasmas included a high-frequency dielectric barrier discha
Publikováno v:
Journal of the American Society for Mass Spectrometry. 25:1538-1548
Drift tube ion mobility spectrometry (DTIMS) has evolved as a robust analytical platform routinely used for screening small molecules across a broad suite of chemistries ranging from food and pharmaceuticals to explosives and environmental toxins. Mo
Autor:
Prabha Dwivedi, William T. Wallace, Facundo M. Fernández, Ariel V. Macatangay, Joel D. Keelor, Thomas Limero, Daniel B. Gazda
Publikováno v:
Analytical Chemistry. 85:9898-9906
The development of a direct analysis in real time-mass spectrometry (DART-MS) method and first prototype vaporizer for the detection of low molecular weight (∼30-100 Da) contaminants representative of those detected in water samples from the Intern