Results 71 to 80 of about 2,139,047 (199)

Perfusion Territory Shifts in Cerebrovascular Diseases Measured by Super‐Selective Arterial Spin Labeling

Journal of Neuroimaging, Volume 35, Issue 6, November/December 2025.
ABSTRACT Background and Purpose Individualized diagnostic approaches are crucial in cerebrovascular diseases, such as internal carotid artery stenosis (ICAS). To evaluate individual collateral blood supply, vessel‐selective imaging has gained high relevance.
Gabriel Hoffmann, Miriam Reichert, Jens Göttler, Michael Helle, Lena Schmitzer, Moritz Hernandez Petzsche, Claus Zimmer, Christine Preibisch, Michael Kallmayer, Kornelia Kreiser, Nico Sollmann, Hans Liebl, Stephan Kaczmarz   +12 more
wiley   +1 more source

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé, Zélia Dionnet, Alice Aléon‐Toppani, Rosario Brunetto, Andrew King, Emmanuel Gardés, Eva Heripré, Damien Loizeau, Sasha Cryan, Kentaro Hatakeda   +9 more
wiley   +1 more source

Highly multiplexed digital PCR assay for simultaneous quantification of variant allele frequencies and copy number alterations of KRAS and GNAS in pancreatic cancer precursors

Molecular Oncology, Volume 19, Issue 10, Page 2921-2935, October 2025.
Combining melting curve analysis enhances the multiplexing capability of digital PCR. Here, we developed a 14‐plex assay to simultaneously measure single nucleotide mutations and amplifications of KRAS and GNAS, which are common driver genes in pancreatic cancer precursors. This assay accurately quantified variant allele frequencies in clinical samples
Junko Tanaka, Tatsuo Nakagawa, Yusuke Ono, Yoshio Kamura, Takeshi Ishida, Hidemasa Kawabata, Kenji Takahashi, Hiroki Sato, Andrew S. Liss, Yusuke Mizukami, Takahide Yokoi   +10 more
wiley   +1 more source

Discovery of Merging Twin Quasars at z = 6.05

The Astrophysical Journal Letters
We report the discovery of two quasars at a redshift of z = 6.05 in the process of merging. They were serendipitously discovered from the deep multiband imaging data collected by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey.
Yoshiki Matsuoka, Takuma Izumi, Masafusa Onoue, Michael A. Strauss, Kazushi Iwasawa, Nobunari Kashikawa, Masayuki Akiyama, Kentaro Aoki, Junya Arita, Masatoshi Imanishi, Rikako Ishimoto, Toshihiro Kawaguchi, Kotaro Kohno, Chien-Hsiu Lee, Tohru Nagao, John D. Silverman, Yoshiki Toba   +16 more
doaj   +1 more source

The radio time delay in the double quasar 0957 + 561

The Astrophysical Journal, 1992
Gravitational lens models for the double quasar 0957+561 predict that there should be a time delay of roughly 1 year between the arrival of wave fronts from the two images. In order to measure this delay, the flux densities were monotored at λ = 6 cm of 0957+561A and 0957+561B since 1979.
J. Lehar, J. N. Hewitt, B. F. Burke, D. H. Roberts   +3 more
openaire   +1 more source

JWST Confirms the Nature of CID-42

The Astrophysical Journal
The galaxy CID-42 (CXOC J100043.1+020637.2) at z = 0.359 has been proposed to contain a promising candidate for a gravitational-wave recoiling supermassive black hole (SMBH), a slingshot SMBH from a triple-SMBH interaction, or a kiloparsec-scale dual ...
Junyao Li, Ming-Yang Zhuang, Yue Shen
doaj   +1 more source

Small-scale double quasars discovered in the DECam Legacy Survey

, 2021
9 pages, 6 figures, submitted to MNRAS, comments are ...
openaire   +2 more sources

VaDAR: Varstrometry for Dual AGN Using Radio Interferometry

The Astrophysical Journal
Binary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman, Tracy E. Clarke, Kristina Nyland, Nathan J. Secrest, Ryan W. Pfeifle, Henrique Schmitt, Shobita Satyapal, Barry Rothberg   +7 more
doaj   +1 more source

A Multiwavelength Study of ELAN Environments (AMUSE2): The Impact of Dense Environment on Massive Dusty Star-forming Galaxies at Cosmic Noon

The Astrophysical Journal
To understand how massive galaxies are influenced by their surroundings, we present new Atacama Large Millimeter/submillimeter Array and Northern Extended Millimeter Array observations as part of A Multiwavelength Study of Enormous Ly α Nebula (ELAN ...
Yu-Jan Wang, Chian-Chou Chen, Fabrizio Arrigoni Battaia, Roberto Decarli, Helmut Dannerbauer, Po-Feng Wu   +5 more
doaj   +1 more source

Spectroastrometry and Reverberation Mapping of Active Galactic Nuclei. I. The Hβ Broad-line Region Structure and Black Hole Masses of Five Quasars

The Astrophysical Journal
We conduct a reverberation mapping (RM) campaign to spectroscopically monitor a sample of selected bright active galactic nuclei with large anticipated broad-line region (BLR) sizes adequate for spectroastrometric (SA) observations by the GRAVITY ...
Yan-Rong Li, Chen Hu, Zhu-Heng Yao, Yong-Jie Chen, Hua-Rui Bai, Sen Yang, Pu Du, Feng-Na Fang, Yi-Xin Fu, Jun-Rong Liu, Yue-Chang Peng, Yu-Yang Songsheng, Yi-Lin Wang, Ming Xiao, Shuo Zhai, Hartmut Winkler, Jin-Ming Bai, Luis C. Ho, Romain G. Petrov, Jesús Aceituno, Jian-Min Wang, SARM Collaboration   +21 more
doaj   +1 more source