Results 81 to 90 of about 173,443 (344)

Are there carbon stars in the Bulge? [PDF]

Symposium - International Astronomical Union, 1999
The Bulge carbon stars have been a mystery since their discovery by Azzopardi et al. (1991), because they are about too faint to be regarded as genuine AGB stars, if located inside the metal-rich Bulge . Part of the mystery can be solved if these carbon stars are related to the Sagittarius dwarf galaxy .
openaire   +3 more sources

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

Advanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley   +1 more source

A Study on Thermal Expansion and Thermomechanical Behavior of Composite Metal Foams

Advanced Engineering Materials, EarlyView.
The coefficient of thermal expansion of steel–steel composite metal foam (S‐S CMF) is shown to be lower than that of bulk stainless steel while its performance under compression demonstrate excellent mechanical stability and strength at all temperatures with gradualsoftening from 400 to 600 °C.
Zubin Chacko, Nigel Amoafo Yeboah, Afsaneh Rabiei   +2 more
wiley   +1 more source

The Demographics of galactic bulges in the SDSS database [PDF]

, 2016
We present a new database of our two-dimensional bulge-disk decompositions for 14,233 galaxies drawn from SDSS DR12 in order to examine the properties of bulges residing in the local universe ($0.005 < z < 0.05$). We performed decompositions in $g$ and $r$ bands by utilizing the {\sc{galfit}} software.
arxiv   +1 more source

Designing Metastable P3‐type Layered Negative Electrodes with High Na Vacancy Concentration for High‐Power Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A metastable high‐vacancy concentration layered P3‐type Na0.5Cr0.5Ti0.5O2 negative electrode material has been synthesized from its K analogues P3‐type K0.5Cr0.5Ti0.5O2 using a facile room temperature ion‐exchange method. The P3‐type Na0.5Cr0.5Ti0.5O2 demonstrates a gravimetric capacity of 125 mA h g−1 and high‐rate performance (80% charging in 3 min ...
Alok K. Pandey, Benoît D.L. Campéon, Saad Zafar, Toru Ishigaki, Tsubasa Koyama, Masanobu Nakayama, Naoaki Yabuuchi   +6 more
wiley   +1 more source

The formation of the Galactic bulge of the Milky Way

EPJ Web of Conferences, 2012
We aim to determine if the bulge formed via mergers as predicted by Cold Dark Matter (CDM) theory, or from disk instabilities, as suggested by its boxy shape, or both processes. We are observing about 28,000 bulge stars in fields that span longitudes of −
Freeman K., Ness M.
doaj   +1 more source

Very Metal-poor Stars in the Outer Galactic Bulge Found by the Apogee Survey [PDF]

, 2013
Despite its importance for understanding the nature of early stellar generations and for constraining Galactic bulge formation models, at present little is known about the metal-poor stellar content of the central Milky Way.
Beers, Timothy C., Bizyaev, Dmitry, Cunha, Katia, Ebelke, Garrett, Eisenstein, Daniel J., Frinchaboy, Peter M., Girardi, Léo, Hearty, Fred R., Holtzman, Jon, Johnson, Jennifer A., Majewski, Steven R., Malanushenko, Elena, Malanushenko, Viktor, Meszaros, Szabolcs, Nidever, David, O'Connel, Robert W., Oravetz, Daniel, Pan, Kaike, Prieto, Carlos Allende, Pérez, Ana E. García, Robin, Annie C., Schiavon, Ricardo P., Schneider, Donald P., Schultheis, Mathias, Shetrone, Matthew, Simmonsand, Audrey, Skrutskie, Michael F., Smith, Verne V., Wilson, John C., Zasowski, Gail   +29 more
core   +3 more sources

Universal Superconductivity in FeTe and All‐Iron‐Based Ferromagnetic Superconductor Heterostructures

Advanced Functional Materials, EarlyView.
The first all‐iron‐based ferromagnetic superconductor heterostructures with high‐temperature superconductivity and strong ferromagnetism aredemonstrated. From this, it is discovered that FeTe becomes universallysuperconducting with a minute level of cationic impurities through doping ordiffusion from neighboring layers, suggesting its ground state can ...
Hee Taek Yi, Xiong Yao, Deepti Jain, Ying‐Ting Chan, An‐Hsi Chen, Matthew Brahlek, Kim Kisslinger, Kai Du, Myung‐Geun Han, Yimei Zhu, Weida Wu, Sang‐Wook Cheong, Seongshik Oh   +12 more
wiley   +1 more source

Comparative Analysis of Bulge Deformation between 2D and 3D Finite Element Models

Advances in Mechanical Engineering, 2014
Bulge deformation of the slab is one of the main factors that affect slab quality in continuous casting. This paper describes an investigation into bulge deformation using ABAQUS to model the solidification process.
Qin Qin, Shu Shang, Diping Wu, Yong Zang
doaj   +1 more source

Analysis of the Influence of Segmented Rollers on Slab Bulge Deformation

Metals, 2019
The bulge deformation of the continuous casting slab must be controlled in order to improve the slab quality. In this study, a coupled three-dimensional thermomechanical model is suggested based on dynamic contact between the slab and the rollers, so as ...
Qin Qin, Ming Li, Jianlin Huang
doaj   +1 more source