Results 51 to 60 of about 426,951 (145)

Carbon measurements in two ultra-faint dwarf galaxies: Grus II and Tucana IV

Astronomy & Astrophysics
The ultra-faint dwarf galaxies (UFDs) are some of the oldest and most metal-poor environments in the Local Group. In particular, they are predicted to host the first stars (only H and He) that lit up in our Universe.
Verdiani Valentina, Skúladóttir Ása, Lucchesi Romain, Mucciarelli Alessio, Massari Davide, Battaglia Giuseppina, María Arroyo-Polonio José, Tolstoy Eline, Covella Sara, Taibi Salvatore   +9 more
doaj   +1 more source

Adaptations of glucagon‐like peptide‐1 receptor agonist‐induced weight loss, drivers of weight regain and future directions of therapeutics

The Journal of Physiology, EarlyView.
Abstract figure legend During GLP‐1RA treatment reduced appetite and energy intake, delayed gastric emptying, decreased visceral fat mass and improved glycaemic control contribute to weight loss. After treatment cessation these benefits are partially or completely reversed, resulting in weight regain, accompanied by increased appetite and energy intake,
Camille E. M. Piguet, Rosie Nucci, Jacqueline L. Beaudry   +2 more
wiley   +1 more source

The Spatiotemporal Genetic Architecture of Seed Vigor in Upland Cotton

Advanced Science, Volume 13, Issue 50, 7 September 2026.
Leveraging the semi‐automated SeedRanger platform, we profiled the germination kinetics of 356 cotton accessions at a 30‐min interval. This high‐throughput phenomic approach delineated a temporal genetic network comprising 541 stage‐specific loci. Crucially, functional validation identified FLA2 as a pivotal, auxin‐modulated regulator that orchestrates
Luyao Wang, Jie Dai, Ting Zhao, Shengjun Zhao, Hongyu Wu, Jiaying Pan, Yupeng Hao, Ke Nie, Li Yu, Yumeng Zhu, Xiangyi Zhao, Kai Huang, Mengke Zhang, Yongyan Zhao, Yaping Jiang, Siyuan Wang, Yiling Pan, Yubing Chen, Yilai Lin, Wanghong Shi, Yayuan Deng, Jin Han, Jie Li, Xuan Long, Junbin Wang, Zhiyuan Zhang, Zegang Han, Zhanfeng Si, Lei Ju, Jun Li, Tianzhen Zhang, Ji Zhou, Xueying Guan   +32 more
wiley   +1 more source

Origin of CEMP stars: What helium and lithium can tell us about CEMP stars?

, 2010
We show that the peculiar surface abundance patterns of Carbon Enhanced Metal Poor (CEMP) stars has been inherited from material having been processed by H- and He-burning phases in a previous generation of stars (hereafter called the ``Source Stars'').
Meynet, Georges, Hirschi, Raphael, Ekstrom, Sylvia, Maeder, Andre, Georgy, Cyril, Eggenberger, Patrick, Chiappini, Cristina   +6 more
openaire   +2 more sources

Discovery of the First Five Carbon-enhanced Metal-poor Stars in the LMC

The Astrophysical Journal Letters
A substantial fraction of metal-poor stars in the local Milky Way halo exhibit large overabundances of carbon. These stars, dubbed carbon-enhanced metal-poor (CEMP) stars, provide crucial constraints on the nature of the early Universe, including the ...
Madeline Lucey, Vedant Chandra, Alexander P. Ji, Andrew R. Casey, David Nidever, Sean Morrison, Robyn E. Sanderson, Slater Oden, José G. Fernández-Trincado, Guilherme Limberg   +9 more
doaj   +1 more source

Cross‐stage single‐cell and spatial metabolome analyses reveal periderm specialization and tanshinone biosynthesis in Salvia miltiorrhiza roots

New Phytologist, Volume 251, Issue 3, Page 1267-1282, August 2026.
Biosynthesis and accumulation of tanshinones in the periderm of Salvia miltiorrhiza during secondary root growth. Summary Perennial herbs develop long‐lived roots that undergo repeated cycles of secondary growth, during which the periderm functions as a protective barrier and a major site of specialized metabolite accumulation.
Licheng Liu, Lianchong Gao, Zhi‐Ying Wang, Yan Liu, Huifeng Ju, Huana Lin, Zheng Shi, Wen‐Juan Cai, Xue Li, Yan‐Bo Huang, Yu Kong, Jing‐Jing Xu, Hong‐Peng Chen, Xin Fang, Juan Guo, Yong‐Hong Hu, Ke Chen, Xiao‐Ya Chen, Jie Hao, Lei Yang   +19 more
wiley   +1 more source

Phase-space Properties and Chemistry of the Sagittarius Stellar Stream Down to the Extremely Metal-poor ([Fe/H] ≲ −3) Regime

The Astrophysical Journal, 2023
In this work, we study the phase-space and chemical properties of the Sagittarius (Sgr) stream, the tidal tails produced by the ongoing destruction of the Sgr dwarf spheroidal (dSph) galaxy, focusing on its very metal-poor (VMP; [Fe/H] < −2) content.
Guilherme Limberg, Anna B. A. Queiroz, Hélio D. Perottoni, Silvia Rossi, João A. S. Amarante, Rafael M. Santucci, Cristina Chiappini, Angeles Pérez-Villegas, Young Sun Lee   +8 more
doaj   +1 more source

Origins of carbon-enhanced metal-poor stars [PDF]

, 2017
We investigate the nature of carbon-enhanced metal-poor (CEMP) stars in Milky Way (MW) analogues selected from the eagle cosmological hydrodynamical simulation.
Cooke, Ryan J., Carlos S. Frenk, Ryan J. Cooke, Theuns, Tom, Frenk, Carlos S., Mahavir Sharma, Tom Theuns, Sharma, Mahavir   +7 more
core   +1 more source

A New Subclass of Carbon-enhanced Metal-poor Stars at Extremely Low Metallicity

The Astrophysical Journal Letters
We report the discovery of a new subclass of carbon-enhanced metal-poor (CEMP) stars, characterized by high absolute carbon abundances ( A (C) > 7.39) and extremely low metallicity ([Fe/H] ≤ –3.1) but notably lacking enhancements in neutron-capture ...
Young Sun Lee, Timothy C. Beers, Yutaka Hirai, Jihye Hong, Miji Jeong, Changmin Kim, Young Kwang Kim   +6 more
doaj   +1 more source

Individual specialization and temporal changes in Antarctic fur seal trophic ecology from a multi‐tracer approach

Ecosphere, Volume 17, Issue 6, June 2026.
Abstract Substantial individual variation in diet and foraging strategies can exist within populations. These differences can enhance individual foraging efficiency, reduce intraspecific competition, and provide fitness advantages that increase the resilience of a population.
Noémie Friscourt, Andrea Walters, Simon Wotherspoon, Mia Wege, Christopher C. Chapman, Elizabeth A. Brewer, P. J. Nico de Bruyn, W. Chris Oosthuizen, Yves Cherel, Benjamin Arthur, Mary‐Anne Lea   +10 more
wiley   +1 more source