Results 41 to 50 of about 48,990 (297)

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 Impact of Irradiation on the Radius and Thermal Evolution of Transiting Brown Dwarfs

The Astrophysical Journal
Masses and radii of transiting brown dwarfs can be measured directly, in contrast to isolated field brown dwarfs, whose mass and radius inferences are model dependent.
Sagnick Mukherjee, Jonathan J. Fortney, Theron W. Carmichael, C. Evan Davis, Daniel P. Thorngren   +4 more
doaj   +1 more source

Characterizing Young Brown Dwarfs using Low Resolution Near-IR Spectra [PDF]

, 2006
We present near-infrared (1.0-2.4 micron) spectra confirming the youth and cool effective temperatures of 6 brown dwarfs and low mass stars with circumstellar disks toward the Chamaeleon II and Ophiuchus star forming regions.
Baraffe I., Cambresy L., Comeron F., D. E. Peterson, D. T. Jaffe, J. C. Wilson, J. D. Smith, K. L. Luhman, K. N. Allers, M. C. Cushing, M. F. Skrutskie, M. Nelson, Michael C. Liu, Perrin G., Whittet D. C. B.   +14 more
core   +2 more sources

An Eccentric Brown Dwarf Eclipsing an M dwarf

The Astronomical Journal, 2022
Abstract We report the discovery of an M = 67 ± 2M J brown dwarf transiting the early M dwarf TOI-2119 on an eccentric orbit (e = 0.3362 ± 0.0005) at an orbital period of 7.200861 ± 0.000005 days. We confirm the brown dwarf nature of the transiting companion using a combination of ground-based and space-based photometry
Caleb I. Cañas, Suvrath Mahadevan, Chad F. Bender, Noah Isaac Salazar Rivera, Andrew Monson, Corey Beard, Jack Lubin, Paul Robertson, Arvind F. Gupta, William D. Cochran, Connor Fredrick, Fred Hearty, Sinclaire Jones, Shubham Kanodia, Andrea S. J. Lin, Joe P. Ninan, Lawrence W. Ramsey, Christian Schwab, Guđmundur Stefánsson   +18 more
openaire   +2 more sources

Introgressed Variation in TaMYB7‐A1 Drives Graded Dormancy and Climate‐Adaptive Pre‐Harvest Sprouting Resistance in Wheat

Advanced Science, EarlyView.
TaMYB7‐A1 directly activates TaABI5 to enhance ABA signaling and regulate ABA‐GA homeostasis, enforcing seed dormancy. Its superior allele, derived from wild einkorn introgression, harbors a MITE insertion that elevates expression and two amino acid substitutions that enhance transcriptional activity, collectively generating graded PHS resistance for ...
Hao Wang, Dongzhi Wang, Yafei Guo, Qi Zheng, Min Zhang, James Simmonds, Jian Hou, Xuemei Liu, Xuelei Lin, Xiaomin Bie, Xiansheng Zhang, Xiaohui Li, Yuan Chen, Xueyong Zhang, Cristobal Uauy, Fei Lu, Chengcai Chu, Zhixi Tian, Jun Xiao   +18 more
wiley   +1 more source

The Influence of Clouds and Deuterium-burning on Brown Dwarf Habitable Zones

The Astrophysical Journal
To better understand the potential habitability of planets orbiting brown dwarfs, this work presents a new set of equilibrium temperature evolution tracks. Unlike most previous work that relied on analytic scaling relationships for brown dwarf luminosity
Kayla J. Smith, Mark S. Marley
doaj   +1 more source

A Virus‐Inducible E3–RLCK–MADS Module Coordinates Suppression of Plant Immunity and Fertility in Rice

Advanced Science, EarlyView.
ABSTRACT Viruses often hijack host developmental programs to promote infection, but the mechanistic links between reproductive regulation and antiviral immunity remain incompletely understood. Here, we identify a virus‐triggered hierarchical degradation cascade that links antiviral immunity and fertility regulation in rice. We show that the rice grassy
Yuansheng Wu, Fengling Wu, Shiting Huang, Denglu Yang, Xin Lei, Xue Zhang, Na Liu, Peng Gan, Chuan Li, Jie Zhang, Ming Wu, Qingxiao Jia, Shanshan Zhao, Jianguo Wu   +13 more
wiley   +1 more source

Searches for brown dwarfs [PDF]

International Astronomical Union Colloquium, 1994
AbstractThis review attempts a brief summary of the numerous and diverse searches for the so-called brown dwarfs, substellar objects having masses between giant planets and the lowest mass M dwarf stars.
openaire   +1 more source

Tooth row allometry in domestic rabbits and nondomestic lagomorphs: Evidence for a decoupling of body and tooth row size changes in evolutionary time

The Anatomical Record, EarlyView.
Domestic rabbits of different body sizes differ disproportionately in the length of their tooth row or the length of their diastema. Abstract In various domestic mammals, smaller breeds tend to have proportionally larger teeth, whereas this is not a universal trend across mammals.
Ursina L. Fasciati, Christine Böhmer, Stefanie Ohlerth, Marcus Clauss   +3 more
wiley   +1 more source

A Large Sample of JWST/NIRSpec Brown Dwarfs: New Distant Discoveries

The Astrophysical Journal Supplement Series
Brown dwarfs are essential probes of stellar and planetary formation, yet their low luminosities pose challenges for detection at large Galactic distances.
Zhijun Tu, Shu Wang, Xiaodian Chen, Jifeng Liu   +3 more
doaj   +1 more source