Results 81 to 90 of about 132,744 (266)

The Dependency of Bar Formation Timescale on Disk Mass Fraction, Toomre Q, and Scale Height

The Astrophysical Journal
Bars are one of the most prominent galactic structures. The classical swing-amplification theory can qualitatively describe the spontaneous bar instability of stellar disks.
Bin-Hui Chen, Juntai Shen
doaj   +1 more source

N-Body Simulations of Open Clusters [PDF]

Symposium - International Astronomical Union, 1980
The dynamical evolution of open star clusters has been followed by numerical N-body simulations. These computations have been done considering both the interactions between stars in the cluster, and the effect of a linearized galactic tidal field, assuming circular orbits in the solar neighbourhood. Models have been studied for 250, 500 and 1000 stars,
openaire   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

Advanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello, Qaisar Nawaz, Pier Francesco Ferrari, Laura Pastorino, Roberto Raiteri, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Measuring the Hubble Constant through the Galaxy Pairwise Peculiar Velocity

The Astrophysical Journal Letters
The Hubble constant H _0 , the current expansion rate of the Universe, is one of the most important parameters in cosmology. The cosmic expansion regulates the mutually approaching motion of a pair of celestial objects due to their gravity.
Wangzheng Zhang, Ming-chung Chu, Shihong Liao, Shek Yeung, Hui-Jie Hu   +4 more
doaj   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

Advanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Field-level Comparison and Robustness Analysis of Cosmological N-body Simulations

The Astrophysical Journal
We present the first field-level comparison of cosmological N -body simulations, considering various widely used codes: Abacus, CUBEP ^3 M, Enzo, Gadget, Gizmo, PKDGrav, and Ramses.
Adrian E. Bayer, Francisco Villaescusa-Navarro, Sammy Sharief, Romain Teyssier, Lehman H. Garrison, Laurence Perreault-Levasseur, Greg L. Bryan, Marco Gatti, Eli Visbal   +8 more
doaj   +1 more source

A Concept of a Digital and Traceable Manufacturing Documentation Based on Formalized Process Description Applied on Composite Aircraft Moveable

Advanced Engineering Materials, EarlyView.
The documentation of component manufacture has become an essential part of today's production processes, especially for the analysis and optimization of production or component design with regard to structural performance, economic efficiency, and sustainability.
Björn Denker, Dominik Delisle, Christian Krombholz, Martin Rädel, Frank Dressel   +4 more
wiley   +1 more source

Progenitor Diversity in the Accreted Stellar Halos of Milky Way–like Galaxies

The Astrophysical Journal
Ongoing large stellar spectroscopic surveys of the Milky Way seek to reconstruct the major events in the assembly history of the Galaxy. Chemical and kinematic observations can be used to separate the contributions of different progenitor galaxies to the
Sy-Yun Pu, Andrew P. Cooper, Robert J. J. Grand, Facundo A. Gómez, Antonela Monachesi   +4 more
doaj   +1 more source

What Do Large Language Models Know About Materials?

Advanced Engineering Materials, EarlyView.
If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer, Thomas Wallmersperger, Gianaurelio Cuniberti   +2 more
wiley   +1 more source

Dynamical and Secular Stability of Mutually Inclined Planetary Systems

The Astrophysical Journal
Multiple analytical, semi-analytical, and empirical stability criteria have been derived in the literature for two-planet systems. But, the dependence of the stability limit on the initial mutual inclination between the inner and outer orbits is not well
Hareesh Gautham Bhaskar, Hagai Perets
doaj   +1 more source