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Observation of magnetic skyrmion lattice in CrMnGe by small-angle neutron scattering.
Sci Rep
January 2025
Helmholtz-Zentrum Berlin für Materialien und Energie, 13109, Berlin, Germany.
Incommensurate magnetic phases in chiral cubic crystals are an established source of topological spin textures such as skyrmion and hedgehog lattices, with potential applications in spintronics and information storage. We report a comprehensive small-angle neutron scattering (SANS) study on the B20-type chiral magnet Cr[Formula: see text]Mn[Formula: see text]Ge, exploring its magnetic phase diagram and confirming the stabilization of a skyrmion lattice under low magnetic fields. Our results reveal a helical ground state with a decreasing pitch from 40 to 35 nm upon cooling, and a skyrmion phase stable in applied magnetic fields of 10-30 mT, and over an unusually wide temperature range for chiral magnets of 6 K ([Formula: see text], [Formula: see text] K).
View Article and Find Full Text PDFA machine learning model incorporating F-prostate-specific membrane antigen-1007 positron emission tomography/computed tomography and multiparametric magnetic resonance imaging for predicting prostate-specific antigen persistence in patients with prostate cancer after radical prostatectomy.
Quant Imaging Med Surg
January 2025
Department of Nuclear Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Background: Although F-prostate-specific membrane antigen-1007 (F-PSMA-1007) positron emission tomography/computed tomography (PET/CT) and multiparametric magnetic resonance imaging (mpMRI) are good predictors of prostate cancer (PCa) prognosis, their combined ability to predict prostate-specific antigen (PSA) persistence has not been thoroughly evaluated. In this study, we assessed whether clinical, mpMRI, and F-PSMA-1007 PET/CT characteristics could predict PSA persistence in patients with PCa treated with radical prostatectomy (RP).
Methods: This retrospective study involved consecutive patients diagnosed with PCa who underwent both preoperative mpMRI and PSMA PET/CT scans between April 2019 and June 2022.
Hypothesis: The oil phase controls the persistence length and aqueous channel diameter of reverse wormlike micelles (RWLMs), specifically by tuning the cohesive energy density of alkanes.
Experiments: We explore the influence of alkanes with varying chain lengths on the rheological properties, structural parameters, and morphology of RWLMs. To establish a link between the solvent characteristics and the structure of RWLMs, we employ a diverse set of complementary techniques, including rheological analysis, small-angle X-ray scattering (SAXS), Fourier-transform infrared (FT-IR) spectroscopy, and cryogenic transmission electron microscopy (cryo-TEM).
Confinement-Induced Self-Assembly of Protein Nanofibrils Probed by Microfocus X-ray Scattering.
J Phys Chem B
January 2025
Department of Engineering Mechanics, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden.
We here explore confinement-induced assembly of whey protein nanofibrils (PNFs) into microscale fibers using microfocused synchrotron X-ray scattering. Solvent evaporation aligns the PNFs into anisotropic fibers, and the process is followed in situ by scattering experiments within a droplet of PNF dispersion. We find an optimal temperature at which the order parameter of the protein fiber is maximized, suggesting that the degree of order results from a balance between the time scales of the forced alignment and the rotational diffusion of the fibrils.
View Article and Find Full Text PDFCrimean-Congo hemorrhagic fever, transfer patterns, vectors and history in Iran and neighboring countries.
Vet Res Forum
November 2024
Department of Basic Health Science, Health Sciences Faculty, Marmara University, Istanbul, Türkiye.
Crimean-Congo hemorrhagic fever (CCHF) is indeed to be considered as one of the most significant vector-borne diseases globally. The virus responsible for CCHF can persist in various animals and lead to severe infections in humans. Ticks of the family are the acknowledged vectors of CCHF virus (CCHFV) transmission to humans.
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