Results 81 to 90 of about 94,613 (301)

Alzheimer's Disease Risk Factor APOE4 Exerts Dimorphic Effects on Female Bone

Advanced Science, EarlyView.
In aging bone, osteocytes accumulate neurodegenerative risk factor Apolipoprotein E (APOE). A humanized version of the Alzheimer's disease risk allele APOE4 altered the mouse bone transcriptome and proteome, with effects in female bone surpassing the brain, including bone fragility due to suppressed osteocytic maintenance of bone quality, identifying ...
Charles A. Schurman, Gurcharan Kaur, Serra Kaya, Joanna Bons, Carlos Galicia Aguirre, Qi Liu, Christina D. King, Kenneth A. Wilson, Harrison L. Baker, Mikayla Hady, Nadja Maldonado Luna, Gregor Bieri, Saul A. Villeda, Lisa M. Ellerby, Birgit Schilling, Tamara Alliston   +15 more
wiley   +1 more source

The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral Energy Distributions for 20 Exoplanet Host Stars that JWST Observed in Cycle 1

The Astronomical Journal
Correctly interpreting JWST spectra of close-in exoplanets requires a measurement of the X-ray and ultraviolet light that the planets receive from their host stars.
David J. Wilson, Allison Youngblood, Girish M. Duvvuri, Kevin France, P. Christian Schneider, Alexander Brown, Isabella Longo, Cynthia S. Froning, Jacob L. Bean, J. Sebastian Pineda, Eliza M.-R. Kempton, Yamila Miguel, Thomas M. Evans-Soma, Zachory Berta-Thompson   +13 more
doaj   +1 more source

M Dwarfs fromHubble Space TelescopeStar Counts. IV. [PDF]

The Astrophysical Journal, 2001
We study a sample of about 1400 disk M dwarfs that are found in 148 fields observed with the Wide Field Camera 2 (WFC2) on the Hubble Space Telescope and 162 fields observed with pre-repair Planetary Camera 1 (PC1), of which 95 of the WFC2 fields are newly analyzed.
Zheng, Zheng, Flynn, Chris, Gould, Andrew, Bahcall, John N., Salim, Samir   +4 more
openaire   +3 more sources

White Dwarf/M Dwarf Binaries as Single Degenerate Progenitors of Type Ia Supernovae

, 2012
Limits on the companions of white dwarfs in the single degenerate scenario for the origin of Type Ia supernovae (SNIa) have gotten increasingly tight. The only type of non-degenerate stars that survive the limits on the companions of SNIa in SNR 0509-67 ...
Andronov, Badenes, Badenes, Birkby, Blondin, Bloom, Bochanski, Bochanski, Browning, Campbell, Chatzopoulos, Chomiuk, Dan, Delfosse, Di Stefano, Di Stefano, Falcon, Fryer, Gerardy, Gerardy, González Hernández, González Hernández, Hachisu, Hachisu, Hilton, Höflich, Höflich, Ivanova, J. Craig Wheeler, Kasen, Kerzendorf, Kerzendorf, King, King, Knigge, Law, Leonard, Li, Li, Liebert, Liebert, MacDonald, Maoz, Marietta, Mullan, Napiwotzki, Nielsen, Pan, Patat, Piro, Pritchet, Reiners, Rest, Romani, Schaefer, Schaefer, Schaefer, Schaefer, Shen, Simon, Starrfield, Stassun, Tutukov, van den Heuvel, van Teeseling, Verbunt, Wang, Wheeler, Wheeler, Wheeler, Willems, Wu, Zahn, Zahn   +73 more
core   +1 more source

Friend, Not Foe: Lowered Tissue Reactivity to Long‐Term Polyimide Implants

Advanced Science, EarlyView.
The choice of optimal neural probe designs remains a major challenge in the field of neurotechnology. This study investigated the biocompatibility of several probe variations, including material, thickness, width, and implantation strategy. It highlights the clear advantage of soft polyimide probes over stiff silicon probes for better device ...
Corinne Orlemann, Laura M. De Santis, Paul Neering, Christian Boehler, Kirti Sharma, Arno Aarts, Tobias Holzhammer, Rik J. J. van Daal, Patrick Ruther, Maria Asplund, Roxana N. Kooijmans, Pieter R. Roelfsema   +11 more
wiley   +1 more source

Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions

The Astronomical Journal
We present new spectroscopic data for Gaia DR3 2309499817384726016 (WD 0008-350A) and its two wide, comoving, low-mass companions. We confirm the white dwarf is a hydrogen rich DA, with T _eff = 6200 ± 90 K and a mass of 0.63 ± 0.03 M _⊙ , close to that ...
Peter A. Jałowiczor, Thomas P. Bickle, J. Davy Kirkpatrick, Sarah L. Casewell, Nicola Gentile Fusillo, Adam C. Schneider, Jonathan Gagné, Jacqueline K. Faherty, Aaron M. Meisner, Marc J. Kuchner, Adam J. Burgasser, Austin Rothermich, Alexia Bravo, Michiharu Hyogo, Mark Popinchalk, Alex J. Brown, Alberto Rebassa-Mansergas, Raquel Murillo-Ojeda, The Backyard Worlds: Planet 9 Collaboration   +18 more
doaj   +1 more source

Coronal X-Ray Emission from Nearby, Low-mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects

The Astronomical Journal, 2023
The high-energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and the potential habitability of exoplanets.
Alexander Brown, P. Christian Schneider, Kevin France, Cynthia S. Froning, Allison A. Youngblood, David J. Wilson, R. O. Parke Loyd, J. Sebastian Pineda, Girish M. Duvvuri, Adam F. Kowalski, Zachory K. Berta-Thompson   +10 more
doaj   +1 more source

The Chemical Evolution of the Monoceros Ring/Galactic Anticenter Stellar Structure

, 2010
The origin of the Galactic Anticenter Stellar Structure (GASS) or "Monoceros ring" --- a low latitude overdensity at the edge of the Galactic disk spanning at least the second and third Galactic quadrants --- remains controversial.
Abadi, Bonifacio, Brook, Carney, Castelli, Chou, Chou, Crane, Frinchaboy, Fulbright, Geisler, Gratton, Helmi, Houdashelt, Houdashelt, Johnson, Johnson, Kazantzidis, Law, Majewski, Majewski, Mateu, Mucciarelli, Newberg, Peñarrubia, Rocha-Pinto, Rocha-Pinto, Sadakane, Shetrone, Shetrone, Smith, Venn, Yanny, Yong, Yong, Younger   +35 more
core   +1 more source

OsGSK2‐OsTCP19 Module Integrates Nitrogen and Brassinosteroid Signaling to Regulate Nitrogen Utilization and Root Growth in Rice

Advanced Science, EarlyView.
OsGSK2‐OsTCP19 module regulating nitrate response and lateral root (LR) development. Low‐nitrate condition results in reduced BR response, accumulation of OsGSK2 and phosphorylated OsTCP19, which suppresses the expression of nitrate‐responsive genes and LR‐development genes and impairs rice growth.
Yongqiang Liu, Weiwei Li, Xiaohui Ma, Xiaohan Wang, Yarong Shi, Xiahe Huang, Xinran Li, Yingchun Wang, Hongning Tong, Bin Hu, Wenbin Zhou, Chengcai Chu   +11 more
wiley   +1 more source

X-Ray, UV, and Optical Observations of Proxima Centauri’s Stellar Cycle

The Astrophysical Journal
Proxima Cen (GJ 551; dM5.5e) is one of only about a dozen fully convective stars known to have a stellar cycle, and the only one to have long-term X-ray monitoring.
Bradford J. Wargelin, Steven H. Saar, Zackery A. Irving, Jonathan D. Slavin, Peter Ratzlaff, José-Dias do Nascimento Jr   +5 more
doaj   +1 more source