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A holder has been developed that enables electron yield-detected soft X-ray spectroscopy of fully contained samples at low temperature. Crucially, this design uses elements of the sample containment to collect ejected electrons, removing the need to expose samples directly to the vacuum environment of the spectrometer. The design is modular and should be adaptable to a number of different endstation configurations, enabling spectroscopy of air-sensitive, radioactive and vacuum-sensitive (biological) samples.
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http://dx.doi.org/10.1107/S1600577524011354 | DOI Listing |
Magn Reson Chem
September 2025
Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan.
We reveal contrasting behaviors in molecular motion between the two materials, including the identification of resonance-enhanced dynamic features in elastomers. We present a depth-resolved analysis of molecular dynamics in semicrystalline polytetrafluoroethylene (PTFE) and fully amorphous fluorinated elastomer (SIFEL) films using static-gradient solid-state F NMR imaging. By measuring spin-lattice relaxation rates ( ) at multiple frequencies and evaluating the corresponding spectral density functions, we reveal distinct dynamic behaviors between the two materials.
View Article and Find Full Text PDFHistol Histopathol
September 2025
Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China.
Brazilin, a natural homoisoflavonoid, is the primary bioactive ingredient derived from the bark and heartwood of L. It has been proven to exhibit multiple biological activities and therapeutic potential in chronic degenerative diseases, fibrotic disorders, inflammatory diseases, and cancers. However, whether it is involved in regulating the pathological process of acute kidney injury (AKI) is not fully understood.
View Article and Find Full Text PDFJ Phys Chem Lett
September 2025
Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China.
In this work, we present a machine learning (ML) approach for predicting the optimal range separation parameters in transition metal complexes (TMCs), aiming to reduce the computational cost associated with optimally tuned range-separated hybrid (OT-RSH) functionals while preserving their accuracy. A data set containing 4380 TMCs was constructed by screening the tmQM database, with each TMC represented by a 62 087-dimensional multiple-fingerprint feature (MFF) vector and labeled with its optimally tuned range separation parameter. Multiple regression models were applied to train the prediction model, and the support vector machine (SVM) model yielded the best performance.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Center, 68 HaMaccabim Road, Rishon Letzion 7505101, Israel.
Cultivating fat for edible tissue presents significant challenges, due to the high costs associated with growth and differentiation factors, alongside the poor viability of adipocytes resulting from cell clustering. Additionally, there is a gap in research regarding the rapid accumulation of fats within cells. To that end, this study presents the development of a biodegradable soy protein colloidosome system for an efficient application: direct delivery of oils into bovine satellite cells, enabling rapid intracellular fat accumulation without the need for adipogenic differentiation.
View Article and Find Full Text PDFJ Phys Chem A
September 2025
Department of Chemistry, Institute for Quantum Information Research and Engineering, and Center for Molecular Quantum Transduction, Northwestern University, Evanston, Illinois 60208-3113, United States.
Light-driven formation of radical ion pairs that occurs much faster than their electron spin dynamics results in correlated spins whose coherence properties can be used as a quantum-based electric field sensor. This results from the radical ion pair having charge and spin distributions that track one another. Thus, electric field induced changes in the distance between the two charges are reflected in the spin-spin distance that can be measured directly using out-of-phase electron spin echo envelope modulation (OOP-ESEEM), a pulse-EPR technique.
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