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Grain-Boundary Corrosion in UO from a Defect Chemical Perspective: A Case Study of the Σ5(310)[001] Grain Boundary.
ACS Appl Mater Interfaces
January 2025
Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany.
We combine atomistic and continuum simulation methods to study the defect chemistry of a model grain boundary in UO. Using atomistic methods, we calculate the formation energies of oxygen interstitials, uranium vacancies, and hole polarons (U ions) across the Σ5(310)[001] symmetric tilt grain boundary. This information is then used as input in a continuum model of point-defect concentrations at the grain boundary and in its vicinity, taking into account electrostatic (space-charge) effects.
View Article and Find Full Text PDFC1orf115 interacts with clathrin adaptors to undergo endocytosis and induces ABCA1 to promote enteric cholesterol efflux.
Cell Mol Life Sci
January 2025
School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong.
C1orf115 has been identified in high-throughput screens as a regulator of multidrug resistance possibly mediated through an interaction with ATP-dependent membrane transporter ABCB1. Here we show that C1orf115 not only shares structural similarities with FACI/C11orf86 to interact with clathrin adaptors to undergo endocytosis, but also induces ABCA1 transcription to promote cholesterol efflux. C1orf115 consists of an N-terminal intrinsically disordered region and a C-terminal α-helix.
View Article and Find Full Text PDFUtilization of Stable and Efficient High-Entropy (NiZnMgCuCo)AlO Catalyst with Polyvalent Transition Metals to Boost Peroxymonosulfate Activation toward Pollutant Degradation.
Small
January 2025
Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.
A polyacrylamide gel method has been used to synthesize a variety of polyvalent-transition-metal-doped Ni position of high entropy spinel oxides (NiZnMgCuCo)AlO-800 °C (A) on the basis of NiAlO, and the catalytic activity of A is studied under the synergistic action of peroxymonosulfate (PMS) activation and simulated sunlight. The A containing polyvalent transition metals (Ni, Cu, and Co) can effectively activate PMS and efficiently degrade levofloxacin (LEV) and tetracycline hydrochloride (TCH) under simulated sunlight irradiation. After 90 min of light exposure, the degradation percentages of LEV (50 mg L) and TCH (100 mg L) degrade by the A/PMS/vis system reach 87.
View Article and Find Full Text PDFNoise reduction of low-dose electron holograms using the wavelet hidden Markov model.
Microscopy (Oxf)
January 2025
The Ultramicroscopy Research Center, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan.
The precision in electron holography studies on electrostatic and magnetic fields depends on the image quality of an electron hologram. Enhancing the image quality of electron holograms is essential for the comprehensive analysis of weak electromagnetic fields; however, extended electron beam irradiation can lead to undesirable radiation damage and contamination. Recent studies have demonstrated that noise reduction using the wavelet hidden Markov model (WHMM) can improve the precision of phase analysis for limited thin-foiled crystals.
View Article and Find Full Text PDFNeutron-gamma pulse shape discrimination for organic scintillation detector using 2D CNN based image classification.
Appl Radiat Isot
March 2025
Technical Physics Division, Bhabha Atomic Research Centre, Mumbai, India.
This study shows an implementation of neutron-gamma pulse shape discrimination (PSD) using a two-dimensional convolutional neural network. The inputs to the network are snapshots of the unprocessed, digitized signals from a BC501A detector. By exposing a BC501A detector to a Cf-252 source, neutron and gamma signals were collected to create a training dataset.
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