Archive

This study evaluated 12 mT electromagnetic fields (100–400 Hz) applied during 30 minutes of cold storage (4 °C) of grass carp. EMF exposure was associated with increased CaATPase activity and frequency-dependent changes in protein and lipid oxidation. NMR results suggested altered water–protein interactions, and the…

This engineering study evaluates mechanical hoop strain in a YBCO coated-conductor double-pancake coil intended for a high-field HTS insert in an NMR magnet. The authors present experimental strain-gauge measurements and analytical stress/strain calculations for a coil operated with and without a stainless steel…

This randomized comparative animal study tested whether extremely low frequency pulsed electromagnetic field exposure affects IVF success in NMRI mice. Mice in the experimental group were exposed to a 1.3 mT pulsed field at 4 kHz for 5 hours during the IVF process. Although the exposed group showed a higher IVF…

This engineering-focused study evaluates pulsed electric field (PEF)-assisted, solvent-free modification of pectin from sugar beet pulp. The authors report that degree of esterification increased with greater PEF intensity and energy input, with supporting evidence from FT-IR, X-ray diffraction, and NMR. Modified…

This experimental study examined how pulsed electric field (PEF) processing parameters affect cell membrane rupture in onion tissue disks, using ion leakage as the primary integrity measure. Disintegration efficiency increased with field strength up to 500 V/cm and varied with pulse width, pulse number, and…

This paper discusses the Czjzek model for distributions of electric field gradient (EFG) tensors in disordered solids and highlights its underlying assumptions and characteristics. It then introduces an extended model that combines a defined local EFG environment with an adjustable Gaussian (Czjzek) noise term to…

This study reports solid-state NMR (13C and 15N MAS) measurements on CuCN·N2H4 to extract copper quadrupole coupling constants and characterize cyanide ordering. Ab initio calculations were used to determine electric field gradient and chemical shielding tensor orientations needed for spectral analysis. The authors…

This study compared slow conventional air defrosting with fast radio frequency (RF) defrosting/tempering in lean beef (whole, minced, and comminuted) using drip loss, NMR relaxometry, and dielectric spectroscopy. RF thawing was associated with lower drip loss and lower micronutrient loss in drip than air thawing,…

This engineering study measures and simulates screening current induced magnetic fields (SCF) in a Bi2223-tape HTS insert used in an LTS/HTS NMR magnet at 77 K. SCF was induced by the insert self-field, an external 5-T background magnet, and their combination, and axial field distributions and temporal variations…

This engineering/materials study describes blending PLLA and PGA using microwave irradiation to produce PLGA-related blends with varying constituent concentrations. The authors report that FTIR, NMR, and DSC measurements indicate blending and cross-linking between the polymers. The abstract does not provide microwave…

This computational study investigates magnetic linear response properties of achiral and chiral carbon nanotubes using first-principles electronic structure methods. It computes magnetic shielding inside and outside nanotubes due to electronic currents induced by external magnetic fields applied parallel or…

This chemistry/engineering study reports the synthesis and NMR/MRI-relevant characterization of a trinuclear Gd(III) chelate intended for high-field MRI contrast applications. Using 17O NMR and proton relaxivity across multiple fields and temperatures, the authors infer bishydration, quantify water exchange and…