Results 141 to 150 of about 67,039 (310)

Unconventional AGN in hard X-ray surveys

, 2003
Extensive programs of follow-up observations of hard X-ray selected sources have unambiguously revealed that the sources of the X-ray background are characterized by an extremely large dispersion in their optical magnitude and spectroscopic ...
Mignoli M, LA FRANCA, Fabio, Molendi S, Perola G, Ciliegi P, Matt G, Brusa M, Vignali C., Comastri A, Maiolino R, Baldi A, Cocchia F, Fiore F   +12 more
core   +1 more source

Broadband X-Ray Observations of the Periodic Optical Source ZTF J185139.81+171430.3 and Its Identification as a Massive Intermediate Polar

The Astrophysical Journal
We present X-ray observations of the periodic optical source ZTF J185139.81+171430.3 (hereafter ZTF J1851) by the XMM-Newton, NICER, and NuSTAR telescopes.
Ren Deng, Kaya Mori, Eric Miao, Gabriel Bridges, Charles J. Hailey, David A. H. Buckley, Gavin Ramsay, Dan Jarvis   +7 more
doaj   +1 more source

Selection of equipment for fluorography and chest radiography based on assessment of image quality and patient exposure levels

Радиационная гигиена
Modern radiation diagnostics, due to its rapid development and improvement of the methods and technologies used, requires constant monitoring, including in the context of patient irradiation levels. The choice of appropriate X-ray diagnostic equipment is
Ilya V. Soldatov, A. V. Vodovatov, Z. A. Lantukh, A. V. Solovev, A. K. Smorchkova, Z. R. Artyukova, P. S. Druzhinina   +6 more
doaj   +1 more source

Prediction of Surface Topography Parameters in Direct Laser Interference Patterning of Stainless Steel Using Infrared Monitoring and Convolutional Neural Networks

Advanced Engineering Materials, EarlyView.
This study presents an infrared monitoring approach for direct laser interference patterning (DLIP) combined with a convolutional neural network (CNN). Thermal emission data captured during structuring are used to predict surface topography parameters.
Lukas Olawsky, Marcelo Sallese, Leander Kläber, Clemens Kuhn, Keming Du, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

BASS. L. Near-infrared Data Release 3: A Spectral Atlas and Characterization of Active Galactic Nuclei

The Astrophysical Journal Supplement Series
We present an analysis of near-infrared (NIR) emission-line properties, active galactic nucleus (AGN) diagnostics, and circumnuclear gas dynamics for 453 hard X-ray selected (14–195 keV) AGNs from the BAT AGN Spectroscopic Survey NIR Data Release 3 (DR3;
Jarred Gillette, Michael J. Koss, Darshan Kakkad, Federica Ricci, Isabella Lamperti, Kyuseok Oh, Alejandra Rojas, Yaherlyn Diaz, Turgay Caglar, Kohei Ichikawa, Ignacio del Moral-Castro, Claudio Ricci, Ezequiel Treister, Franz E. Bauer, Richard Mushotzky, Mislav Baloković, Jakob S. den Brok, Benny Trakhtenbrot, C. Megan Urry, Fiona Harrison, Daniel Stern   +20 more
doaj   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

Advanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao, Emad M. Elgallad, Alexandre Maltais, X.‐Grant Chen   +3 more
wiley   +1 more source

Magnetic Activity in X-Ray Stars from eROSITA: Insights from the TESS and LAMOST Surveys

The Astrophysical Journal Supplement Series
We have focused on investigating X-ray stars obtained from eROSITA Data Release 1 (eRASS1) and conducting crossmatching with the TESS and LAMOST surveys.
Lulu Xu, Li-yun Zhang, Yinpeng Wang, Tianhao Su, Xianming L. Han, Adriana M. Pires, Rui Guo, Xian Zhang, Prabhakar Misra, Qingfeng Pi, Hongpeng Lu   +10 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source