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While the importance of a systematic overview of scientific data and demands toward data integration are increasing, data capitalization and confidentiality are also emerging competitively. X-ray absorption spectroscopy has a strong tradition of data sharing, as cross-referencing data enhances the detailed understanding of the obtained spectra. While physically integrating databases in various formats is impractical, a system has been successfully developed that allows cross-searching among Japanese, USA and European databases in cyberspace. This achievement is made possible through the realization of `vocabulary unification' and `knowledge unification' on a global scale, implemented in publicly accessible endpoints. This paper provides a summary of the concepts of terminology, ontology and semantics for X-ray spectroscopy behind this system, and presents a pilot case study along with future directions for data integration in synchrotron radiation science.
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http://dx.doi.org/10.1107/S1600577525002206 | DOI Listing |
J Synchrotron Radiat
November 2025
State Key Laboratory of Chemical Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.
This study develops an integrated X-ray absorption spectroscopy (XAS) photoemission electron microscopy (PEEM) platform on beamline BL09U at the Shanghai Synchrotron Radiation Facility (SSRF), enabling nanoscale characterization of complex materials through energy-resolved imaging and local-area XAS. By using the wide range of energy tunability, full access to different polarizations and PEEM's surface sensitivity, we have established a gap-monochromator control system under the EPICS framework to synchronize the elliptically polarized undulator (EPU) gap and monochromator energy dynamically, optimizing photon flux stability for absorption fine structure analysis. Combining X-ray magnetic circular dichroism (XMCD) and X-ray magnetic linear dichroism (XMLD) with PEEM and local-area XAS, this platform achieves concurrent mapping of electronic structures and magnetic domains in ferromagnetic nano-patterns, as demonstrated through our studies of NiFe Permalloy using this system.
View Article and Find Full Text PDFPhys Chem Chem Phys
September 2025
Shock Wave Research Laboratory, Department of Physics, Abdul Kalam Research Center, Sacred Heart College (Autonomous), affiliated to Thiruvalluvar University, Tirupattur, Tamil Nadu, 635 601, India.
Bismuth ferrite (BiFeO) is a semiconductor with multiferroic properties, synthesized by the sol-gel method. While static high-pressure studies have advanced our understanding of the phase behavior of BiFeO, the effects of dynamic pressure acoustic shock waves remain unexplored. In this study, BiFeO was subjected to 100 shock pulses with 0.
View Article and Find Full Text PDFJ Org Chem
September 2025
Department of Organic Chemistry, University of Chemical Technology and Metallurgy, 8 St. Kliment Ohridski blvd, Sofia 1756, Bulgaria.
Herein, a novel class of azo photoswitches based on a phthalimide with an azo bond to the imide ring is presented, exhibiting reversible isomerization under a broad range of visible light irradiation from 405 to 530 nm. Structural variations with heteroaryl or aryl segments attached to the 3-phthalylazo unit exhibit distinct spectral features, such as red-shifted absorption, well-separated absorption bands, and tunable stability of the metastable isomer, ranging from seconds to days. They differ drastically in the half-life of -isomer stability, ranging from several seconds (-methylpyrrole) to days (-methylimidazole).
View Article and Find Full Text PDFPlant Cell Physiol
September 2025
Biostructural Mechanism Laboratory, RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan.
Phycobilisome (PBS) is a water-soluble light-harvesting supercomplex found in cyanobacteria, glaucophytes, and rhodophytes. PBS interacts with photosynthetic reaction centers, specifically photosystems II and I (PSII and PSI), embedded in the thylakoid membrane. It is widely accepted that PBS predominantly associates with PSII, which functions as the initial complex in the linear electron transport chain.
View Article and Find Full Text PDFInt J Biol Macromol
September 2025
College of Textiles, Donghua University, Shanghai, 201620, China; Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai, 201620, China. Electronic address:
In this study, a novel bleaching method for ramie cellulose fibers with low oxidative damage was developed by utilizing the properties of sodium percarbonate contained in tea saponin, which slowly releases hydrogen peroxide in the catalytic oxidation system of N-hydroxyphthalimide (NHPI). First, the bleaching process was optimized using response surface design, followed by comparison and characterization of fiber properties prepared under different bleaching systems. Finally, the energy consumption, water consumption, and toxicity of the NHPI/tea saponin system were evaluated.
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