Results 81 to 90 of about 512 (214)

The Marriage of Metal Nanoclusters With Reticular Frameworks: Synthetic Strategies and Biomedical Applications

Aggregate, Volume 7, Issue 2, February 2026.
The integration of metal nanoclusters (MNCs) with reticular frameworks (RFs) has recently emerged as a powerful strategy to create composite materials with enhanced and synergistic functionalities. This review provides an overview of the synthetic strategies developed for constructing MNCs/RFs composites and their recent advances in biomedical ...
Wenfeng Liu, Qinyin Yin, Li‐Li Tan, Li Shang   +3 more
wiley   +1 more source

Characterization of a deformable beating cardiac phantom with real‐time dosimetric capabilities for validation of MRI‐guided heart radiotherapy

Medical Physics, Volume 53, Issue 2, February 2026.
Abstract Background Stereotactic arrhythmia radioablation (STAR) has emerged as a salvage treatment for patients with ventricular tachycardia, and the MR‐linacs offer MRI‐guidance during such treatment. However, available workflows on MR‐linacs are not yet optimized and characterized dedicatedly to perform heart radiotherapy due to a lack of realistic ...
Manon M. N. Aubert, Prescilla Uijtewaal, Kalin I. Penev, Yoan LeChasseur, Nick Hartman, Laurie J. M. de Vries, Paris Tzitzimpasis, Pim T. S. Borman, Stefano Mandija, Martin F. Fast, Astrid L. H. M. W. van Lier   +10 more
wiley   +1 more source

Varstrometry for Off-nucleus and Dual Sub-Kpc AGN (VODKA): A Mix of Singles, Lenses, and True Duals at Cosmic Noon

The Astrophysical Journal
Dual active galactic nuclei (AGNs), a phase in some galaxy mergers during which both central supermassive black holes (SMBHs) are active, are expected to be a key observable stage leading up to SMBH mergers.
Arran C. Gross, Yu-Ching Chen, Masamune Oguri, Liam Nolan, Xin Liu, Yue Shen, Ming-Yang Zhuang, Junyao Li, Nadia L. Zakamska, Hsiang-Chih Hwang, Yuzo Ishikawa   +10 more
doaj   +1 more source

Three quasars from a survey of strong 25-µm emitters [PDF]

, 2000
We have carried out a spectroscopic survey of 750 sources that are strong 25-μm emitters from the IRAS Faint Source data base. Many of these sources are previously unknown active galactic nuclei including new IRAS quasars, three of which we describe here:
Parker, Q. A., Scarrott, S. M., Wolstencroft, R. D., Lonsdale, C. J.   +3 more
core  

Localized Energy Absorption through LaB6 Surface Modification of PA12 Enables Enhanced Tensile Performance in Diode Laser PBF‐LB

Chemistry–Methods, Volume 5, Issue 12, November 2025.
LaB6 surface modification of PA12 enables efficient NIR diode laser PBF‐LB processing, with enhanced tensile strength and tailored microstructures achieved at minimal additionaly energy. By reducing the need for high filler content, this approach expands the options and performance levels of advanced industrial‐grade polymer additive manufacturing. The
Nadine Stratmann, Michael Willeke, Simon Leupold, Kateryna Loza, Arne Lüddecke, Arno Kwade, Michael Schmidt, Stephan Barcikowski, Anna Rosa Ziefuss   +8 more
wiley   +1 more source

An Evolutionary Model for Quasars

, 1976
A simple, though not necessarily unique, model for the cosmic population dynamics of quasars is presented. This model incorporates a double evolutionary trend: (i) a strong luminosity evolution, the presence of which we have discussed previously (Zotov ...
W Davidson, Natalia V Zotov
core   +1 more source

Satellites and Small Bodies With ALMA: Insights Into Solar System Formation and Evolution

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an unprecedented view of solar system bodies themselves, and of the structure and chemistry of forming ...
Katherine de Kleer, Michael E. Brown, Martin Cordiner, Richard Teague   +3 more
wiley   +1 more source

2 NEW CANDIDATE SUPERLUMINAL QUASARS - 4C 28.45 AND 4C 21.35

, 1992
Multi-epoch VLBI observations are presented of two large double-lobed quasars, 4C 28.45 (1830 + 285) and 4C 21.35 (1222 + 216). On mas-scales, both quasars contain a multi-component asymmetric radio structure. In 4C 28.45 the nuclear emission was seen to
SCHILIZZI, RT, MILEY, GK, Barthel, P.D., Hooimeyer, J.R.A., Schilizzi, R.T., HOOIMEYER, JRA, BARTHEL, PD, Miley, G.K.   +7 more
core   +1 more source

Balmer line shifts in quasars [PDF]

, 2016
We offer a broad review of Balmer line phenomenology in type 1 active galactic nuclei, briefly summarising luminosity and radio loudness effects, and discussing interpretation in terms of nebular physics along the 4D eigenvector 1 sequence of quasars. We
Marziani, Paola, Olmo, Ascensión del, Sulentic, J. W., Sulentic, Jack W., Del Olmo, A., Zamfir, S.   +5 more
core   +1 more source

A Comparative Study of VTEC Estimates Derived From S/X VLBI and VGOS Observations

Space Weather, Volume 23, Issue 12, December 2025.
Abstract The ionosphere, which strongly varies in time and space, is one of the largest error sources for microwave measurements, if not accounted for accurately. Especially for single‐frequency observations, precise ionospheric models are needed to correct for the ionospheric delays. This study explores the utility of Very Long Baseline Interferometry
Arno Rüegg, Grzegorz Kłopotek, Benedikt Soja   +2 more
wiley   +1 more source