Results 61 to 70 of about 512 (214)

Dimensional association between ADHD traits and gray matter volume in young adults: A voxel‐based morphometry study

Psychiatry and Clinical Neurosciences Reports, Volume 5, Issue 2, June 2026.
This study examined the association between attention‐deficit/hyperactivity disorder (ADHD) traits and gray matter volume (GMV) in 534 healthy young adults. Higher Hyperactivity/Restlessness scores were associated with greater GMV in the right dorsolateral prefrontal cortex (DLPFC), a region implicated in executive control and behavioral regulation. No
Haruka Asaoka, Michio Takahashi, Kentaro Oba, Hikaru Takeuchi, Yasuyuki Taki   +4 more
wiley   +1 more source

A Close Quasar Pair in a Massive Galaxy Merger at z = 5.7

The Astrophysical Journal Letters
Close quasar pairs are rare products of galaxy mergers in which both supermassive black holes (SMBHs) are actively accreting, offering strong constraints on merger-driven active galactic nuclei evolution.
Minghao Yue, Xiaohui Fan, Anna-Christina Eilers, Feige Wang, Jinyi Yang, Robert A. Simcoe   +5 more
doaj   +1 more source

A catalogue of quasars and active nuclei: 13th edition

, 2010
Aims. This catalogue is aimed at presenting a compilation of all known AGN in a compact and convenient form, and we hope that it will be useful to all workers in this field. Methods.
P. Véron, M.-P. Véron-Cetty
core   +1 more source

Triple‐Negative Breast Cancer Versus Non‐Triple‐Negative Breast Cancer: The Impact of Pd and Pt Complexes on Basal‐Like Triple‐Negative Breast Cancer

ChemMedChem, Volume 21, Issue 9, 14 May 2026.
The anticancer activity of the complexes Pd3Spd2, Pt3Spd2, Pt2Put2(NH3)4 and Pd2Put2 against human TNBC, non‐TNBC and healthy breast cells was evaluated. The metabolic impact of the most promising metal complexes—Pd3Spd2 and Pt2Put2(NH3)4—was further assessed using vibrational microspectroscopies, providing detailed insights into the drug‐induced ...
Clara B. Martins, Maria P. M. Marques, Luís A. E. Batista de Carvalho, Ana L. M. Batista de Carvalho   +3 more
wiley   +1 more source

HST Confirms Sub-5 kpc Dual Quasar Pairs at Cosmic Noon

The Astrophysical Journal
During cosmic noon ( z ∼ 1–3), when both star formation and black hole growth peaked, galaxy mergers are predicted to trigger dual active galactic nuclei that eventually coalesce as supermassive black hole (SMBH) binaries.
Qian Wang, Xuheng Ding, John Silverman, J. Xavier Prochaska, Tommaso Treu, Hassen M. Yesuf, Andrew D. Goulding, Masatoshi Imanishi, Nobunari Kashikawa, Issha Kayo, Kotaro Kohno, Kai Liao, Yoshiki Matsuoka, Michael A. Strauss, Shenli Tang   +14 more
doaj   +1 more source

First In Vivo 23Na Human Imaging at 10.5 T Using a Combined Sodium‐Proton Transceiver Body Array

Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2429-2441, April 2026.
ABSTRACT Purpose To demonstrate the first in vivo human 23Na MRI at 10.5 T using a novel dual‐tuned transceiver body array and to evaluate a self‐gating approach for respiratory motion compensation, focusing on renal imaging. Methods A custom‐built eight‐channel 23Na‐loop 1H‐dipole transceiver array was designed, constructed, and characterized.
Simon Schmidt, Arcan M. Ertürk, Gregory J. Metzger   +2 more
wiley   +1 more source

The discovery and characterization of the most distant quasars

, 2015
Luminous quasars at high redshift (z>5.5) provide direct probes of the growth of supermassive black holes and their host galaxies at the epoch of cosmic reionization, which is one of the current frontiers of astrophysical research.
Banados Torres, Eduardo
core   +1 more source

Commissioning and clinical implementation of an MLC tracking system: An evaluation of AAPM TG‐264 guidelines

Journal of Applied Clinical Medical Physics, Volume 27, Issue 3, March 2026.
Abstract Background Precise radiotherapy relies on accurately targeting tumours while minimising exposure to healthy tissue, yet patient and organ motion complicate treatment delivery. To address intra‐fractional motion, multi‐leaf collimator (MLC) tracking systems have recently been adopted, adapting beam shapes in real‐time.
André Haraldsson, Tobias Pommer, Emilia Persson, Hedda Enocsson, Mustafa Kadhim, Adalsteinn Gunnlaugsson, Per Munck af Rosenschöld   +6 more
wiley   +1 more source

Anisotropy Analysis of Bamboo and Tooth Using 4‐Angle Polarization Micro‐Spectroscopy

Nano Select, Volume 7, Issue 3, March 2026.
Super‐resolution via orientation: spatial distribution of specific molecular vibrations are revealed at 1/20 of the diffraction limit. ABSTRACT To investigate the anisotropic properties of biomaterials, two distinct classes are considered as follows: polymer‐based (cellulose in plants) and crystalline‐based (enamel in teeth), each demonstrating ...
Meguya Ryu, Hsin‐Hui Huang, Jitraporn Vongsvivut, Soon Hock Ng, Irma Dumbrytė, Donatas Narbutis, Mangirdas Malinauskas, Saulius Juodkazis, Junko Morikawa   +8 more
wiley   +1 more source

The Quasar Proximity Effect as an Alternative Probe of Quasar Pair Distances

The Astrophysical Journal Letters
Recently discovered quasar pairs at high redshifts ( z  ≳ 5) are likely precursors to supermassive black hole mergers, providing a promising window to high-redshift quasar growth mechanisms.
Huanqing Chen, Camille Avestruz, Jakob Wiest   +2 more
doaj   +1 more source