Results 101 to 110 of about 1,338,515 (290)

Stage‐Dependent β‐Synuclein Links MRI and Cognitive Decline in Alzheimer's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Synaptic degeneration drives cognitive decline in Alzheimer's disease (AD), but synaptic biomarkers are scarce. Brain‐enriched β‐synuclein emerged as a synaptic damage marker. We investigated its diagnostic, prognostic, and structural correlates across the AD continuum.
Ulaş Ay, Merve Alaylioglu, Erdi Sahin, Sanem Sultan Yoruk Oner, Gulce Iskan, Gulce Cosku Yilmaz Cakan, Gozde Kizilates‐Evin, Emre Hari, Elif Kurt, Erdinc Dursun, Basar Bilgic, Hasmet Hanagasi, Hakan Gurvit, Tamer Demiralp, Duygu Gezen‐Ak, Bedia Samanci   +15 more
wiley   +1 more source

A Convolutional Neural Network for the Recovery of Transfer Functions from Velocity-resolved Reverberation Mapping Data

The Astrophysical Journal
One of the hallmarks of active galactic nuclei is that they are highly variable with time. In watching the spectra vary it has been observed that the emission lines often appear to “reverberate”—that is they vary in response to continuum variations ...
Kirk Long, Keith Horne, Jason Dexter, Benoit Tremblay   +3 more
doaj   +1 more source

Current and Future Applications of Reverberation-Mapped Quasars in Cosmology

Frontiers in Astronomy and Space Sciences, 2019
Reverberation mapping technique (RM) is an important milestone that has elevated our understanding of Active Galactic Nuclei (AGN) demographics, giving information about the kinematics and the structure of the Broad Line Region (BLR).
Swayamtrupta Panda, Swayamtrupta Panda, Mary Loli Martínez-Aldama, Michal Zajaček   +3 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

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, Z. Yao, Yong-Jie Chen, Hua-Rui Bai, Sen Yang, P. Du, F. Fang, Yi-Xin Fu, Jun-Rong Liu, Yue-Chang Peng, Yu-Yang Songsheng, Yi-Lin Wang, M. Xiao, S. Zhai, H. Winkler, J. Bai, L. C. Ho, R. G. Petrov, Jesús Aceituno, Jian-Min Wang   +20 more
semanticscholar   +1 more source

OzDES reverberation mapping program: Stacking analysis with Hβ, Mg ii and C iv [PDF]

Monthly notices of the Royal Astronomical Society
Reverberation mapping is the leading technique used to measure direct black hole masses outside of the local Universe. Additionally, reverberation measurements calibrate secondary mass-scaling relations used to estimate single-epoch virial black hole ...
U. Malik, R. Sharp, A. Penton, Z. Yu, P. Martini, B. E. Tucker, T. Davis, G. Lewis, C. Lidman, M. Aguena, O. Alves, J. Annis, J. Asorey, D. Bacon, D. Brooks, A. Rosell, J. Carretero, Ting-Yun Cheng, L. Costa, M. Pereira, J. Vicente, P. Doel, I. Ferrero, J. Frieman, G. Giannini, D. Gruen, R. Gruendl, S. Hinton, D. Hollowood, D. James, K. Kuehn, J. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, R. Ogando, A. Palmese, A. Pieres, A. P. Malag'on, K. Reil, A. Romer, E. Sanchez, M. Schubnell, M. Smith, E. Suchyta, M. Swanson, G. Tarlé, C. To, N. Weaverdyck, P. Wiseman   +49 more
semanticscholar   +1 more source

A Reverberation Instrument Based On Perceptual Mapping

, 2011
The present article describes a reverberation instrumentwhich is based on cognitive categorization of reverberating spaces. Different techniques for artificial reverberationwill be covered. A multidimensional scaling experimentwas conducted on impulse responses in order to determinehow humans acoustically perceive spatiality.
openaire   +2 more sources

Continuum polarization reverberation mapping of AGNs

, 2020
The determination of the size and geometry of the broad line region (BLR) in active galactic nuclei is one of the major ingredients for determining the mass of the accreting black hole. This can be done by determining the delay between the optical continuum and the flux reprocessed by the BLR, in particular via the emission lines.
Lobos, P. A. Rojas, Goosmann, R. W., Hameury, J. M., Marin, F.   +3 more
openaire   +2 more sources

Cognitive Behavioral Therapy for Youth With Childhood‐Onset Lupus: A Randomized Clinical Trial

Arthritis Care &Research, EarlyView.
Objective Our objective was to determine the feasibility and acceptability of the Treatment and Education Approach for Childhood‐Onset Lupus (TEACH), a six‐session cognitive behavioral intervention addressing depressive, fatigue, and pain symptoms, delivered remotely to individual youth with lupus by a trained interventionist.
Natoshia R. Cunningham, Thea Senger‐Carpenter, Jocelyn Zuckerman, Michelle Adler, Mallet R. Reid, Ashley Danguecan, Luana Flores Pereira, Sarah I. Mossad, Samantha L. Ely, Khalid Abulaban, Elizabeth A. Kessler, Natalie Rosenwasser, Tamar B. Rubinstein, Ekemini A. Ogbu, Emily A. Smitherman, Alaina Miller, Taylor Abounader, Elizabeth Ross, Livie Timmerman, Dhriti Sharma, Jennifer N. Stinson, Stacy Allen, Kabita Nanda, Tala El Tal, Deborah M. Levy, Linda T. Hiraki, Hermine I. Brunner, Mathew Reeves, Steven J. Pierce, Andrea Knight   +29 more
wiley   +1 more source

Dust reverberation mapping of the Quasar 3C273

, 2021
Die vorliegende Arbeit untersucht die zentrale Struktur eines bestimmten Aktiven Galaktischen Kerns (AGN), des Quasars 3C\,273. Zu diesem Zweck wurden 5-6 Jahre optischer und Nahinfrarot-Beobachtungen ausgewertet und eine Staub-Echokartierung durchgeführt. Der gesamte beobachtete Fluss wurde in AGN, Wirtsgalaxie und Staub aufgeteilt.
openaire   +3 more sources

First reverberation mapping of a Bowen fluorescence line

Astronomy & Astrophysics
Context. Reverberation mapping (RM) is a powerful tool to determine the extent, structure, and kinematics of the broad-line region (BLR) of active galactic nuclei (AGNs). So far, RM of the BLR has only been performed for recombination lines responding to
Ochmann Martin W., Cackett Edward M., Diehl Lukas, Horne Keith, Probst Malte A., Kollatschny Wolfram   +5 more
doaj   +1 more source