Results 71 to 80 of about 426,951 (145)
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
What helium and lithium can tell us about CEMP stars? [PDF]
, 2017 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”). In
Chiappini, Cristina +6 more
core
Distinct barium isotope ratios in CEMP-s and CEMP-rs stars
Astronomy & AstrophysicsAims . We present a spectroscopic analysis of ten carbon-enhanced metal-poor (CEMP) stars of type CEMP-s and CEMP-rs and determine their non-local thermodynamic equilibrium abundances of Ba and Eu, as well as the fractions of the odd Ba isotopes (F odd ). The determination
T. M. Sitnova +4 more
openaire +3 more sources
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
High-Resolution Spectroscopy of Cool Carbon-Rich and Metal-Poor Star HD 209621
Open Astronomy, 2012 Element abundances for HD 209621 obtained earlier display significant discrepancies, especially in the case of CNO and neutron-capture elements. Therefore we performed a detailed analysis of chemical composition of this star using a new high-resolution ...
Matrozis E., Začs L., Barzdis A.
doaj +1 more source
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
, 2016 Context. The detailed composition of most metal-poor halo stars has been found to be very uniform. However, a fraction of 20−70% (increasing with decreasing metallicity) exhibit dramatic enhancements in their abundances of carbon; these are the so-called
Placco, V. M. +13 more
core +1 more source
Four-hundred Very Metal-poor Stars Studied with LAMOST and Subaru. IV. Heavy Element Enhanced Stars
The Astrophysical JournalWe perform a homogeneous analysis of 82 heavy-element-enhanced metal-poor stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) /Subaru sample, including 64 r -process-enhanced stars, two limited- r stars, and 16 stars ...
Yangming Lin +9 more
doaj +1 more source
GalaxiesThe chemical composition of stellar atmospheres provides a valuable window into the complex processes of stellar nucleosynthesis. Among chemically peculiar cool stars, many objects are the products of mass transfer in binary systems, including most ...
Aruna Goswami +4 more
doaj +1 more source
Earth's Future, Volume 13, Issue 3, March 2025.Abstract Climate change could irreversibly modify Southern Ocean ecosystems. Marine ecosystem model (MEM) ensembles can assist policy making by projecting future changes and allowing the evaluation and assessment of alternative management approaches.
Kieran Murphy +42 more
wiley +1 more source