Results 141 to 150 of about 34,107 (312)
How internal structure shapes the metallicity of giant exoplanets
Astronomy & AstrophysicsContext. The composition and internal structure of gas giant exoplanets encode key information about their formation and evolution. Aims. We investigate how different assumed interior structures affect the inferred bulk metallicity and its correlation ...
Peerani Lorenzo +2 more
doaj +1 more source
Metallicity estimates with SDSS-DR6
, 2020 We present a study of the metallicity of 20268 galaxies from the Sloan Digital Sky Survey -Data Release 6 (SDSS-DR6) using the R 23 method, and derive analytical calibrations from several metallicity-sensitive line ratios: [ performed the study for the ...
J Cepa +7 more
core
Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor
Advanced Functional Materials, EarlyView.Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben +6 more
wiley +1 more source
The Astrophysical JournalThe metal enrichment of a galaxy is determined by the cycle of baryons in outflows, inflows, and star formation. The relative contribution and timescale of each process sets the relationship between stellar mass, metallicity, and the star formation rate (
Nathalie A. Korhonen Cuestas +6 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand +13 more
wiley +1 more source
Divergent Evolution of Radial Metallicity Gradients in the Thin and Thick Disks of the Milky Way
The Astrophysical Journal LettersUsing 200,388 red clump stars from LAMOST and APOGEE, we investigate the radial metallicity gradients of the Galactic disk as a function of vertical height and stellar age. The thin disk displays a pronounced negative radial metallicity gradient near the
Weixiang Sun +8 more
doaj +1 more source
Colors, magnitudes, and velocity dispersions in early-type galaxies: implications for galaxy ages and metallicities [PDF]
, 2005 Schneider, D. +4 more
core +1 more source
Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies
Advanced Functional Materials, EarlyView.Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke +3 more
wiley +1 more source
The Astrophysical JournalThe metallicity of the star-forming environment is a fundamental parameter shaping the evolution of protoplanetary disks and the formation of planetary systems, yet its influence remains poorly constrained.
Mizna Ashraf +8 more
doaj +1 more source
Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring
Advanced Functional Materials, EarlyView.This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha +11 more
wiley +1 more source