Results 91 to 100 of about 66,681 (291)

Innate Immune Reprogramming Mediated by Endogenous Retroelement Dysregulation Drives Multiple Sclerosis Progression

Annals of Clinical and Translational Neurology, EarlyView.
Epigenetic reprogramming in hematopoietic stem and progenitor cells (HSPCs) and downstream myeloid cells, mediated by H3.3 downregulation and endogenous retroelement (ERE) overexpression, contributes to the progression of multiple sclerosis (MS). ABSTRACT Background Skewed myelopoiesis in the bone marrow has been identified as a key driver of multiple ...
Li‐Mei Xiao, Qiu‐Ping Zhao, Run‐Yun Li, Wei Chen, Huan‐Huan Song, Wan‐Jin Chen, Ying Fu   +6 more
wiley   +1 more source

Anisotropic Magnetized Asteroseismic Waves

The Astrophysical Journal
We solve for waves in a polytropic, stratified plasma with a spatially varying background magnetic field that points along the horizontal x -direction, and with gravity that is directed along the vertical z -direction.
B. Tripathi, Dhrubaditya Mitra
doaj   +1 more source

The Role of Magnetic Fields in Setting the Star Formation Rate and the Initial Mass Function

Frontiers in Astronomy and Space Sciences, 2019
Star-forming gas clouds are strongly magnetized, and their ionization fractions are high enough to place them close to the regime of ideal magnetohydrodyamics on all but the smallest size scales.
Mark R. Krumholz, Mark R. Krumholz, Christoph Federrath, Christoph Federrath   +3 more
doaj   +1 more source

Paramagnetic Rim Lesions Are Associated With Trans‐Synaptic Degeneration of the Visual Pathway in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Retrograde trans‐synaptic degeneration (rTSD) from posterior visual pathway lesions in multiple sclerosis (MS) is characterized by hemi‐macular ganglion cell‐inner plexiform layer (GCIPL) thinning and contralateral visual field loss.
Abdul Jaber Tayem, Angel Liu, Sargis Manukyan, Mustafa Subhi, Elaina Luskin, Bryan Quah, Sreekanth Madhusoodhanan Nair, Arzu C. Has Silemek, Gabriela Zabala, Yujie Cui, Laura Locke, Paula Barreras, Marwa Kaisey, Vinicius Calsavara, Daniel S. Reich, Nancy L. Sicotte, Pascal Sati, Omar Al‐Louzi   +17 more
wiley   +1 more source

Testing the Rossby Paradigm: Weakened Magnetic Braking in Early K-type Stars

The Astrophysical Journal
There is an intricate relationship between the organization of large-scale magnetic fields by a stellar dynamo and the rate of angular momentum loss due to magnetized stellar winds. An essential ingredient for the operation of a large-scale dynamo is the
Travis S. Metcalfe, Pascal Petit, Jennifer L. van Saders, Thomas R. Ayres, Derek Buzasi, Oleg Kochukhov, Keivan G. Stassun, Marc H. Pinsonneault, Ilya V. Ilyin, Klaus G. Strassmeier, Adam J. Finley, Rafael A. García, Daniel Huber, Yuxi (Lucy) Lu, Victor See   +14 more
doaj   +1 more source

Magnetohydrodynamic instabilities in stellar radiative regions

Astronomy & Astrophysics
Context. Space missions such as Kepler have brought new constraints, along with new questions, on stellar evolution. A key issue is the unexpected spin-down of low-mass stellar cores, pointing to an efficient angular momentum transport mechanism in which
Durepaire V., Petitdemange L., Belkacem K., Guseva A., Manchon L., Hollerbach R., Daniel F.   +6 more
doaj   +1 more source

MAGNETIC FIELD VARIABILITY OF STARS

Odessa Astronomical Publications, 2017
We present in this paper a description for various types of the apparent variations of stellar magnetic fields, which we actually recognise.
V. D. Bychkov, L. V. Bychkova, J. Madej
doaj   +1 more source

X-ray emission from massive stars with magnetic fields

, 2011
We investigate the connections between the magnetic fields and the X-ray emission from massive stars. Our study shows that the X-ray properties of known strongly magnetic stars are diverse: while some comply to the predictions of the magnetically ...
Abbott, Babel, Babel, Berghöfer, Bonatto, Bouret, Brown, Cassinelli, Cassinelli, Cassinelli, Castor, Cohen, Donati, Donati, Drake, Dziembowski, Favata, Feigelson, Feldmeier, Feldmeier, Ferrario, Gagné, Gagné, Gräfener, Hamann, Hofner, Ignace, Leutenegger, Li, Lucy, Lucy, MacGregor, Martins, Martins, Mewe, Moffat, Morton, Nazé, Nazé, Nazé, Neiner, Oskinova, Oskinova, Oskinova, Oskinova, Oskinova, Owocki, Paczyǹski, Puls, Raassen, Raassen, Rho, Sana, Sander, Sanz-Forcada, Schnerr, Schulz, Sokal, Stelzer, ud-Doula, Walborn, Waldron, Waldron, Waldron, Wojdowski, Wolk, Wolk   +66 more
core   +1 more source

Normal‐Appearing White Matter Injury Mediates Chronic Deep Venous Hypoxia and Disease Progression in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore how cerebral hypoxia and Normal‐Appearing White Matter (NAWM) integrity affect MS lesion burden and clinical course. Methods Seventy‐nine MS patients, including 13 clinically isolated syndrome (CIS) patients and 66 relapsing–remitting multiple sclerosis (RRMS) patients, and 44 healthy controls (HCs) were recruited from ...
Xinli Wang, Huiying Wang, Zhizheng Zhuo, Ai Guo, Ke Lv, Decai Tian, Chao Chai, Yunyun Duan, Shuang Xia   +8 more
wiley   +1 more source

Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg

The Astrophysical Journal Letters
The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the suggestion that the star could be experiencing a magnetic grand minimum.
Travis S. Metcalfe, Klaus G. Strassmeier, Ilya V. Ilyin, Derek Buzasi, Oleg Kochukhov, Thomas R. Ayres, Sarbani Basu, Ashley Chontos, Adam J. Finley, Victor See, Keivan G. Stassun, Jennifer L. van Saders, Aldo G. Sepulveda, George R. Ricker   +13 more
doaj   +1 more source