Results 21 to 30 of about 89,601 (249)

Top-down proteomic identification of bacterial protein biomarkers and toxins using MALDI-TOF-TOF-MS/MS and post-source decay

Reviews in Analytical Chemistry, 2013
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) is a new tool for rapid identification of bacterial microorganisms.
Fagerquist Clifton K.
doaj   +1 more source

Tungsten surface enrichment in EUROFER and Fe-W model systems studied by high-resolution time-of-flight rutherford backscattering spectroscopy

Nuclear Materials and Energy, 2018
Time-of-flight Rutherford backscattering spectroscopy (ToF-RBS) with incident heavy ions offers a substantially improved depth resolution compared to conventional RBS with incident He ions.
M. Mayer, T.F. Silva, R. Arredondo, M. Balden, I. Bogdanović-Radović, T. Höschen, H. Maier, M. Oberkofler, L. Ru, Z. Siketić   +9 more
doaj   +1 more source

Laser Desorption/Ionization-Time of Flight (LDI-TOF) and Matrix-Assisted Laser Desorption/Ionization - Time of Flight (MALDI – TOF) mass spectrometry of an Algerian asphaltene

Egyptian Journal of Petroleum, 2017
Both LDI-TOF and MALDI-TOF Mass spectroscopy experiments of an Algerian asphaltene derived from a deposit were performed. LDI mass experiments were conducted for both linear and reflectron modes under laser wavelength/attenuation variation. The different
T. Fergoug, C. Boukratem, B. Bounaceur, Y. Bouhadda   +3 more
doaj   +1 more source

Time-of-flight (TOF) implementation for PET reconstruction in practice

Physics in Medicine & Biology, 2019
Abstract The time-of-flight (TOF) feature of PET scanners has been used for a long time in PET reconstruction, but many implementational aspects are still incomplete or ambiguous in the literature. Here we formalize and present theoretical and practical implementation details for the reconstruction of clinical TOF histogram and list-mode
Filipovic, Marina, Comtat, Claude, Stute, Simon   +2 more
openaire   +4 more sources

Time of flight fast approximation method for ultrasound sub-surface imaging

Research and Review Journal of Nondestructive Testing, 2023
Time-Of-Flight (TOF) computations are needed in all ultrasound imaging methods. In Non Destructive Testing (NDT), where ultrasound inspections are frequently done using a coupling medium between the transducer and the test piece, wave refraction ...
Guillermo Cosarinsky, Mario Muñoz, Jorge F. Cruza, Jorge Camacho   +3 more
doaj   +1 more source

PTR-QMS versus PTR-TOF comparison in a region with oil and natural gas extraction industry in the Uintah Basin in 2013 [PDF]

Atmospheric Measurement Techniques, 2015
Here we compare volatile organic compound (VOC) measurements using a standard proton-transfer-reaction quadrupole mass spectrometer (PTR-QMS) with a new proton-transfer-reaction time of flight mass spectrometer (PTR-TOF) during the Uintah Basin Winter ...
C. Warneke, P. Veres, S. M. Murphy, J. Soltis, R. A. Field, M. G. Graus, A. Koss, S.-M. Li, R. Li, B. Yuan, J. M. Roberts, J. A. de Gouw   +11 more
doaj   +1 more source

Rapid characterization of the fatty acyl composition of complex lipids by collision-induced dissociation time-of-flight mass spectrometry

Journal of Lipid Research, 2007
Profiling of leaf extracts from mutants of Arabidopsis with defects in lipid desaturation demonstrates the utility of collision-induced dissociation time-of-flight mass spectrometry (CID-TOF MS) for screening biological samples for fatty acid ...
Steven Wynn Esch, Pamela Tamura, Alexis A. Sparks, Mary R. Roth, Shivakumar P. Devaiah, Ernst Heinz, Xuemin Wang, Todd D. Williams, Ruth Welti   +8 more
doaj   +1 more source

High-Linearity High-Resolution Time-of-Flight Linear-Array Digital Image Sensor Using Time-Domain Feedback

Sensors, 2021
This paper presents a high-linearity high-resolution time-of-flight (ToF) linear-array digital image sensor using a time-domain negative feedback technique.
Juyeong Kim, Keita Yasutomi, Keiichiro Kagawa, Shoji Kawahito   +3 more
doaj   +1 more source

Recent updates in the VERDI fission-fragment spectrometer [PDF]

EPJ Web of Conferences
The VElocity foR Direct particle Identification (VERDI) is a spectrometer designed to determine fission-fragment mass distributions using the 2E-2v method, which measures both velocities and energies of the fission fragments. VERDI has two time-of-flight
Gómez L A. M., Al-Adili A., Tarrío D., Solders A., Pomp S., Vidali M., Fontana C.L., Geerts W., Macías M., Bonaldi C., Oberstedt A., Oberstedt S.   +11 more
doaj   +1 more source

Viral Biomarker Detection and Validation Using MALDI Mass Spectrometry Imaging (MSI)

Proteomes, 2022
(1) Background: MALDI imaging is a technique that still largely depends on time of flight (TOF)-based instrument such as the Bruker UltrafleXtreme. While capable of performing targeted MS/MS, these instruments are unable to perform fragmentation while ...
Matthew B. O’Rourke, Ben R. Roediger, Christopher J. Jolly, Ben Crossett, Matthew P. Padula, Phillip M. Hansbro   +5 more
doaj   +1 more source