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Free, publicly-accessible full text available December 6, 2026
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The CSViewer for Analysts application provides access to a comprehensive database collected from the Cayo Santiago rhesus monkey colony with 11000 subjects over the past 86 years. Assorted data selection, visualization and analytical features are added to its new version 1.2, and results from mining newly collected osteological measures revealed new skeletal and dental development models. To expose the intended knowledge model of the CS colony to public audiences, especially to science classes at colleges and schools, a CSViewer for Education edition is planned. Supporting queries in plain English is considered beneficial to help students to seek for answers. This paper presents initial experiments with the Claude language model. A dental checkup dataset is used to and queries in plain English are used to explore the dataset through Claude API and the results were integrated with CSViewer to use its charting features to display dental development trend of the CS monkey population. Further development based on natural language interactions enabling utilization of the generative AI features are to be continued.more » « lessFree, publicly-accessible full text available April 16, 2026
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Free, publicly-accessible full text available May 1, 2026
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Free, publicly-accessible full text available January 18, 2026
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Free, publicly-accessible full text available January 18, 2026
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Free, publicly-accessible full text available April 30, 2026
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It is undeniable that novel 2D devices and heterostructures will have a lasting impact on the advancement of future technologies. However, the inherent instability of many exfoliated van der Waals (vdW) materials is a well-known hurdle yet to be overcome. Thus, the sustained interest in exfoliated vdW materials underscores the importance of understanding the mechanisms of sample degradation to establish proactive protective measures. Here, the impact of prolonged synchrotron-based X-ray beam exposure on exfoliated flakes of two contemporary vdW materials, and - , is explored using resonant inelastic X-ray scattering (RIXS) and total fluorescence yield X-ray absorption spectroscopy (XAS). In , the resulting RIXS and XAS spectra show a suppression, then vanishing, of NiS6multiplet excitations coupled with an upward shift of the peak energy of the XAS as a function of X-ray dose. In - , the signs of beam damage from the RIXS spectra are less evident. However, the post-experiment characterization of both materials using Raman spectroscopy exhibits signals of an amorphous and disordered system compared to pristine flakes; in addition, energy-dispersive X-ray spectroscopy of shows evidence of ligand vacancies. As synchrotron radiation is fast becoming a required probe to study 2D vdW materials, these findings lay the groundwork for the development of future protective measures for synchrotron-based prolonged X-ray beam exposure, as well as for X-ray free electron laser.more » « lessFree, publicly-accessible full text available June 25, 2026
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Abstract We present JWST-NIRCam narrowband, 4.05μm Brαimages of the Sgr C Hiiregion, located in the central molecular zone (CMZ) of the Galaxy. Unlike any Hiiregion in the solar vicinity, the Sgr C plasma is dominated by filamentary structure in both Brαand the radio continuum. Some bright filaments, which form a fractured arc with a radius of about 1.85 pc centered on the Sgr C star-forming molecular clump, likely trace ionization fronts. The brightest filaments form a “π-shaped” structure in the center of the Hiiregion. Fainter filaments radiate away from the surface of the Sgr C molecular cloud. The filaments are emitting optically thin free–free emission, as revealed by spectral index measurements from 1.28 GHz (MeerKAT) to 97 GHz (Atacama Large Millimeter/submillimeter Array). But, the negative in-band 1 to 2 GHz spectral index in the MeerKAT data alone reveals the presence of a nonthermal component across the entire Sgr C Hiiregion. We argue that the plasma flow in Sgr C is controlled by magnetic fields, which confine the plasma to ropelike filaments or sheets. This results in the measured nonthermal component of low-frequency radio emission plasma, as well as a plasmaβ(thermal pressure divided by magnetic pressure) below 1, even in the densest regions. We speculate that all mature Hiiregions in the CMZ, and galactic nuclei in general, evolve in a magnetically dominated, low plasmaβregime.more » « lessFree, publicly-accessible full text available April 2, 2026
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