Results 121 to 130 of about 625,053 (333)

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Revisiting the Fundamental Metallicity Relation with Observation and Simulation

The Astrophysical Journal Letters
The gas-phase metallicity of galaxies is regulated by multiple astrophysical processes, which makes it a crucial diagnostic of galaxy formation and evolution.
Chengyu Ma, Kai Wang, Enci Wang, Yingjie Peng, Haochen Jiang, Haoran Yu, Cheng Jia, Zeyu Chen, Haixin Li, Xu Kong   +9 more
doaj   +1 more source

Impacts of Radial Mixing on the Galactic Thick and Thin Disks

, 2017
Using N-body simulations of the Galactic disks, we qualitatively study how the metallicity distributions of the thick and thin disk stars are modified by radial mixing induced by the bar and spiral arms.
Kawata, Daisuke
core   +1 more source

Photometric metallicity map of the Large Magellanic Cloud [PDF]

, 2015
We have estimated a metallicity map of the Large Magellanic Cloud (LMC) using the Magellanic Cloud Photometric Survey (MCPS) and Optical Gravitational Lensing Experiment (OGLE III) photometric data.
S. Choudhury, A. Subramaniam, A. Cole
semanticscholar   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

A Possible Correlation between Metallicity and Near-IR Color for Late-M and L Dwarfs

The Astrophysical Journal
We examine the relationship between metallicity and J − K color for 64 benchmark late-M and L dwarfs, all of which are wide companions to higher-mass stars, and six of which are new discoveries.
Ruihan Zhang, Michael C. Liu, Zhoujian Zhang   +2 more
doaj   +1 more source

Ultra-faint dwarf galaxies as a test of early enrichment and metallicity-dependent star formation

, 2011
The tight relation of star formation with molecular gas indicated by observations and assumed in recent models implies that the efficiency with which galaxies convert their gas into stars depends on gas metallicity.
Andrey V. Kravtsov, Aykutalp, Bigiel, Bigiel, Bolatto, Brooks, Carrera, Chen, Dalcanton, Gnedin, Gnedin, Gnedin, Gnedin, Helmi, Kalirai, Karlsson, Kirby, Komatsu, Konstantinos Tassis, Kravtsov, Kravtsov, Krumholz, Krumholz, Krumholz, Krumholz, Kuhlen, Lee, Leroy, Nickolay Y. Gnedin, Ostriker, Prochaska, Rafelski, Rudd, Simon, Simon, Spaans, Tassis, Tassis, Tremonti, Wise, Wolfire, Wong, Wong, Zemp   +43 more
core   +1 more source

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Direct observation of half-metallicity in the Heusler compound Co2MnSi

Nature Communications, 2014
Ferromagnetic thin films of Heusler compounds are highly relevant for spintronic applications owing to their predicted half-metallicity, that is, 100% spin polarization at the Fermi energy. However, experimental evidence for this property is scarce. Here
M. Jourdan, J. Minár, J. Braun, Alexander Kronenberg, S. Chadov, B. Balke, A. Gloskovskii, M. Kolbe, H. Elmers, G. Schönhense, H. Ebert, C. Felser, M. Kläui   +12 more
semanticscholar   +1 more source

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source