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The James Webb Space Telescope has discovered a surprising population of bright galaxies in the very early Universe (≲500 Myr after the Big Bang) that is hard to explain with conventional galaxy-formation models and whose physical properties are not fully understood. Insight into their internal physics is best captured through nebular lines, but at these early epochs, the brightest of these spectral features are redshifted into the mid-infrared and remain elusive. Using the mid-infrared instrument onboard the James Webb Space Telescope, here we present a detection of Hα and doubly ionized oxygen ([O iii] 4959,5007 Å) from the bright, ultra-high-redshift galaxy candidate GHZ2/GLASS-z12.
View Article and Find Full Text PDFRhodamine 6G-PAH probes for heavy metal: Fluorescence detection, bioimaging, and solid-phase sensing application.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Research Center for Nano Photoelectrochemistry and Devices, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China. Electronic address:
Four rhodamine 6G-PAH probes with pyrene (R6G-Pyr), anthracene (R6G-Ant), acenaphthene (R6G-Acp) or phenanthrene (R6G-PA) as fluorophore were designed and synthesized for Hg(II) detection. Probe R6G-PA, which had the lowest detection limit of 0.84 nmol/L, displayed the best fluorescence performance as compared to the other three probes.
View Article and Find Full Text PDFStringent Tests of Lorentz Invariance Violation from LHAASO Observations of GRB 221009A.
Phys Rev Lett
August 2024
Key Laboratory of Particle Astrophysics and Experimental Physics Division and Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, China.
Article Synopsis
- - On October 9, 2022, LHAASO detected a significant afterglow from the gamma-ray burst 221009A, achieving record photon statistics in the TeV energy range.
- - This observation allowed researchers to test the idea of Lorentz invariance violation (LIV), which is related to faster-than-light travel predictions in some quantum gravity theories.
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Fostering Organizational Excellence through Inclusive Leadership: Practical Guide for Radiology Leaders.
Radiographics
September 2024
From the Department of Radiology, University of Wisconsin-Madison School of Medicine and Public Health, 600 Highland Ave, F6/178C, Madison, WI 53792-3252 (A.K.N., N.B., R.W.W.); Memorial Sloan Kettering Cancer Center, New York, NY (N. Monga, V.L.M.); Medical College of Wisconsin, Milwaukee, Wis (N. McFarlane); University of Wisconsin-Madison School of Business, Madison, Wis (M.S., A.S.); and Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, Wis (I.A.W.).
Inclusive leadership styles value team members, invite diverse perspectives, and recognize and support the contributions of employees. The authors provide guidance to radiology leaders interested in developing inclusive leadership skills and competencies to improve workforce recruitment and retention and unlock the potential of a rapidly diversifying health care workforce. As health care organizations look to attract the best and brightest talent, they will be increasingly recruiting millennial and Generation Z employees, who belong to the most diverse generations in American history.
View Article and Find Full Text PDFA Canadian National Survey Study of Harassment in Surgery-Still a Long Way to Go.
J Surg Educ
August 2024
Department of Surgery, Western University, London, ON, Canada. Electronic address:
Objectives: Previous literature has consistently documented harassment and discrimination in surgery. These experiences may contribute to the continuing gender inequity in surgical fields. The objective of our study was to survey Canadian surgeons and surgical trainees to gain a greater understanding of the experience of harassment across genders, career stage, and specialty.
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