Results 51 to 60 of about 407,067 (139)
A New Subclass of Carbon-enhanced Metal-poor Stars at Extremely Low Metallicity
The Astrophysical Journal LettersWe 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 +6 more
doaj +1 more source
Ground‐truthing of satellite imagery to assess seabird colony size: A test using Adélie penguins
Remote Sensing in Ecology and Conservation, Volume 12, Issue 2, Page 305-317, April 2026.Adélie penguin colony size can be estimated from space using very high‐resolution (VHR; 0.3–0.6 m resolution) satellite imagery due to the contrast between their guano stain and the surrounding terrain. Our study assessed the utility of VHR imagery for making indirect assessments of changes in colony size.
Alexandra J. Strang +9 more
wiley +1 more source
Tracing the origin of neutron-capture elements in the metalpoor star HE 1244-3036 [PDF]
EPJ Web of ConferencesWe present results from a detailed abundance analysis of a star HE 1244-3036, based on a high resolution (R ∼ 50000) SUBARU/HDS spectrum. The wavelength coverage is from 3510 to 5310 Å. Our estimated metallicity [Fe/H] ∼ −2.5 and carbon abundance ([C/Fe]
Dutta Debasish, Goswami Aruna
doaj +1 more source
Spatial Resolution Impact Assessment for Long‐Term Population Monitoring of Adélie Penguin Guano
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.Adélie penguins (Pygoscelis adeliae) are key indicators of the Antarctic ecosystem, and remotely sensed guano stains offer an efficient means of estimating breeding abundance. Landsat medium‐resolution (MR) imagery enables long‐term monitoring through its archive.
Jinku Park +9 more
wiley +1 more source
Astronomy & AstrophysicsAims. The aim of this study is to evaluate the reliability of spectroscopic and photometric approaches for deriving stellar parameters in metal-poor stars, focusing on a carbon-enhanced metal-poor (CEMP) star with a well-studied very metal-poor star as ...
Heil Svenja, Juul Hansen Camilla
doaj +1 more source
Journal of Integrative Plant Biology, Volume 68, Issue 3, Page 587-606, March 2026.Under heat stress, GENOMES UNCOUPLED1 (GUN1) is crucial for the formation of functional chloroplasts in seedlings under heat stress. Without GUN1, chloroplast development fails and seedlings fail to turn green. Therefore, GUN1 helps relay heat‐related cues to maintain chloroplast biogenesis and support thermotolerance during early growth.
Shan Qi +6 more
wiley +1 more source
Recent Advances in Injectable Hydrogel Biotherapeutics for Regenerative Dental Medicine
Macromolecular Bioscience, Volume 25, Issue 10, October 2025.This review analyses multifunctional injectable hydrogels, natural or synthetic, physically or chemically crosslinked, that deliver exosomes, stem cells, and other bioactive cues to inflamed or damaged oral tissues. We discuss their immunomodulatory, antimicrobial, angiogenic, and osteogenic capacities, highlighting advances that enable regenerative ...
Renan Dal‐Fabbro +6 more
wiley +1 more source
Elemental abundances and classification of CEMP stars
, 2012 We present a detailed study of Carbon-Enhanced Metal-Poor (CEMP) stars, based on high-resolution spectroscopic observations of a sample of 18 stars. The stellar spectra for this sample were obtained at the 4.2m William Herschel Telescope (WHT) in 2001 and 2002, using the Utrecht Echelle Spectrograph (UES), at a resolving power R ~52000 and S/N ~ 40 ...
Allen, Dinah M. +4 more
openaire +2 more sources
Natural variation in ZmNRT2.5 modulates husk leaf width and promotes seed protein content in maize
Plant Biotechnology Journal, Volume 23, Issue 4, Page 1039-1052, April 2025.Summary The husk leaf of maize (Zea mays) encases the ear as a modified leaf and plays pivotal roles in protecting the ear from pathogen infection, translocating nutrition for grains and warranting grain yield. However, the natural genetic basis for variation in husk leaf width remains largely unexplored.
Qi Wang +10 more
wiley +1 more source
Tracing Early Enrichment Pathways: Chemical and Chemodynamical Analysis of Two CEMP-no Stars
The Astronomical JournalWe present a detailed high-resolution spectroscopic and chemodynamic analysis of two carbon stars, HE 1148−0037 and HE 1246−1344, using SUBARU High Dispersion Spectrograph spectra ( R ∼ 50,000).
Meenakshi Purandardas
doaj +1 more source