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Towards improved spectroscopic applications in multi-gas environments: CO spectral line parameter measurement and analysis.
Spectrochim Acta A Mol Biomol Spectrosc
March 2025
Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, China. Electronic address:
The ν + 2ν + ν band of CO is dominated by weak absorption lines near 2.0 uμm, which has potential application in planetary atmosphere, astrophysical, and hydrocarbon fuel combustion investigations. High-quality spectral line parameters are the foundation of spectroscopic technology.
View Article and Find Full Text PDFMitochondrial oxidative phosphorylation capacity in skeletal muscle measured by ultrafast Z-spectroscopy (UFZ) MRI at 3T.
Magn Reson Med
March 2025
F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Research Institute, Baltimore, Maryland, USA.
Article Synopsis
- The study explores the use of ultrafast Z-spectroscopy (UFZ) MRI at 3T to assess oxidative phosphorylation (OXPHOS) in human skeletal muscle during exercise.
- UFZ MRI techniques were tested on five healthy participants, revealing significant changes in metabolic signals post-exercise, which were further refined through pH correction methods.
- Results indicate that UFZ MRI can effectively reduce acquisition time and provides reliable metrics for mitochondrial function, emphasizing the importance of pH correction for accurate OXPHOS measurement.
Exploration of Materials for Three-Dimensional NMR Microcoil Production via CNC Micromilling and Laser Etching.
Anal Chem
August 2024
Environmental NMR Center, University of Toronto, 1265 Military Trail, Toronto, Ontario M1C 1A4, Canada.
The excellent versatility of 5-axis computer numerical control (CNC) micromilling has led to its application for prototyping NMR microcoils tailored to mass-limited samples (reducing development time and cost). However, vibrations during 5-axis milling can hinder the creation of complex 3D volume microcoils (i.e.
View Article and Find Full Text PDFBayesian analysis of 1D H-NMR spectra.
J Magn Reson
July 2024
Institute of Applied Mathematics and Physics, Zurich University of Applied Sciences, Technikumstr. 71, 8400 Winterthur, Switzerland.
Extracting spin system parameters from 1D high resolution H-NMR spectra can be an intricate task requiring sophisticate methods. With a few exceptions methods to perform such a total line shape analysis commonly rely on local optimization techniques which for increasing complexity of the underlying spin system tend to reveal local solutions. In this work we propose a full Bayesian modeling approach based on a quantum mechanical model of the spin system.
View Article and Find Full Text PDFMagnetic Susceptibility Modeling of Magic-Angle Spinning Modules for Part Per Billion Scale Field Homogeneity.
J Magn Reson
July 2024
Department of Chemistry, Colorado School of Mines, Golden, CO 80501, USA; PhoenixNMR, LLC, Loveland, CO 80503, USA. Electronic address:
Magic-angle spinning (MAS) solid-state NMR methods are crucial in many areas of biology and materials science. Conventional probe designs have often been specified with 0.1 part per million (ppm) or 100 part per billion (ppb) magnetic field resolution, which is a limitation for many modern scientific applications.
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